JP2023173615A - cap - Google Patents

Abstract

To provide a cap that can enhance versatility.SOLUTION: A cap includes: a body 210 tat has a top surface 211 having an opening 211a, a first cylindrical part 212 hanging down from the top surface 211 and attached to a liquid supply port 21a, and a second cylindrical part 213 provided along the opening 211a within a cylinder of the first cylindrical part 212; and a bottomed cylindrical auxiliary cap 220 that closes an opening of an end part in the second cylindrical part 213. When a container body is attached to a container receptacle, an end part of a cylindrical portion 221 in the auxiliary cap 220 is pressed against a stepped surface of a shaft member, so that the auxiliary cap 220 is configured to be detached from the second cylindrical part 213. An upper surface of the end part of the cylindrical portion 221 is provided with a projection 224 at least partially in a circumferential direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a cap.

BACKGROUND ART Conventionally, in a liquid supply device such as a water server, a technique is known in which a container containing a liquid such as water is detachably attached to a container receiver provided at the upper part of the device main body. A cap provided on a container used in this device is generally composed of a cap main body attached to a liquid supply port of the container main body, and an auxiliary cap provided in the center of the cap main body. In this device, during the process of attaching the container to the device main body, the auxiliary cap is pressed by a shaft member provided on the device main body, so that the auxiliary cap separates from the cap main body. The shaft member has a cylindrical shaft body and an inlet provided in the shaft body. When the auxiliary cap is separated from the cap body, the liquid contained in the container body flows from the inlet to the shaft body. It is supplied to the inside of the device main body through the inside of the cylinder.

In the above-mentioned shaft member provided in the device main body, a tapered portion is provided at the tip of the shaft main body portion via a stepped surface, and the auxiliary cap detached from the cap main body is configured to be held in the tapered portion. is common. The dimensions and shape of the auxiliary cap are designed to correspond to the dimensions and shape of the tapered part so that the tip of the tapered part can press the auxiliary cap and stably hold the auxiliary cap in the tapered part. is common.

The dimensions and shape of the tapered part mentioned above vary depending on the manufacturer and product of the main body of the device, so the dimensions and shape of the auxiliary cap also need to be different for each product, and special caps need to be prepared for each type of product. there were. This has made it difficult to reduce costs.

Special Publication No. 6-62195 Patent No. 6600520

An object of the present invention is to provide a cap that can increase versatility.

The present invention employs the following means to solve the above problems.

That is, the cap of the present invention is
Liquid supply of a container main body that is detachable from the container receiver in a liquid supply device main body that has a step surface and a tapered portion at the tip than the step surface, and a shaft member that projects upward from the bottom of the container receiver. A cap that closes the mouth,
a top surface having an opening; a first cylindrical portion that hangs down from the top surface and is attached to the liquid supply port; a cap body having a second cylindrical part;
an auxiliary cap that closes a lower end of the second cylindrical part;
In addition to providing
The auxiliary cap has a cylindrical part connected to the second cylindrical part, and a lower end of the cylindrical part is closed,
When the container body is attached to the container receiver, the upper end portion of the auxiliary cap is pressed against the stepped surface of the shaft member, and the auxiliary cap is detached from the second cylindrical portion. Further, the upper end portion is provided with a protrusion in at least a portion of the circumferential direction.

According to the present invention, the upper end of the cylindrical portion of the auxiliary cap is pressed against the stepped surface of the shaft member, and the auxiliary cap is detached from the second cylindrical portion. Therefore, the auxiliary cap can be removed from the cap body regardless of the size and shape of the tapered portion of the shaft member. Therefore, the cap can be applied to various liquid supply device bodies. Further, since the upper end of the cylindrical portion is provided with a protrusion at least in part in the circumferential direction, the auxiliary cap is moved to the second cylindrical portion by pressing the protrusion with the stepped surface of the shaft member. will be separated from. Thereby, when the auxiliary cap is pressed against the step surface of the shaft member, an uneven load is applied, so that the force required to separate the auxiliary cap from the cap body can be reduced.

The cylindrical portion of the auxiliary cap has a cylindrical shape, and a plurality of the protrusions are preferably provided in a range of less than 120° in the circumferential direction at the upper end of the cylindrical portion.

By employing such a configuration, even if a groove or the like is provided in a part of the stepped surface of the shaft member, the protrusion provided on the auxiliary cap is more reliably pressed against the stepped surface of the shaft member. Therefore, an unbalanced load can be applied more reliably.

When not in use, the cap main body and the auxiliary cap are integrally provided through a thin part, and when the container main body is attached to the container holder, the thin part is broken and the auxiliary cap is removed. It is preferable that the cap body separate from the cap body.

As a result, the cap can be composed of one component, thereby reducing costs, and there is no gap between the cap body and the auxiliary cap before the auxiliary cap is detached from the cap body.

An engaging protrusion that engages with an annular groove provided between the stepped surface and the tapered portion of the shaft member may be provided on the inner circumferential surface of the cylindrical portion of the auxiliary cap.

Thereby, in a state where the auxiliary cap is detached from the cap main body, the auxiliary cap can be stably held in the tapered portion of the shaft member.

The inner circumferential surface of the second cylindrical portion slides against the outer circumferential surface of the shaft member during the process of attaching the container body to the container receiver, and when the attachment is completed, the shaft Preferably, an annular seal protrusion is provided that fits into an annular groove provided on the outer peripheral surface of the member.

Thereby, it is possible to suppress liquid from leaking from the gap between the cap body and the shaft member during the stage where the container is being mounted on the container receiver and even after the container is mounted.

In the process of detaching the container body from the container holder, the auxiliary cap fitted onto the tip of the shaft member moves the second cylindrical portion until the upper end of the cylindrical portion abuts against the seal protrusion. It is preferable that the annular gap between the outer circumferential surface of the cylindrical portion and the inner circumferential surface of the second cylindrical portion be sealed by entering the inside and separating from the shaft member.

Thereby, even if the container main body is removed from the container receiver while liquid remains in the container main body, leakage of the liquid in the container main body can be suppressed.

Note that each of the above configurations may be employed in combination as much as possible.

As explained above, according to the present invention, versatility can be improved.

FIG. 1 is a simplified diagram of a liquid supply device according to an embodiment of the present invention. FIG. 2 is an external view showing an example of a shaft member according to an embodiment of the present invention. FIG. 3 is an external view of a cap according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view of a cap according to an embodiment of the present invention. FIG. 5 is an explanatory diagram of the mechanism of the cap according to the embodiment of the present invention. FIG. 6 is an explanatory view of the mechanism of the cap according to the embodiment of the present invention. FIG. 7 is an explanatory diagram of the mechanism of the cap according to the embodiment of the present invention. FIG. 8 is an explanatory view of the mechanism of the cap according to the embodiment of the present invention. FIG. 9 is a schematic cross-sectional view showing a modification of the cap.

EMBODIMENT OF THE INVENTION Below, with reference to drawings, the form for implementing this invention is illustratively described in detail based on an Example. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in this example are not intended to limit the scope of this invention to only those, unless otherwise specified. .

(Example)
A liquid supply device and a cap according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. In this embodiment, a water server will be described as an example of a liquid supply device, but the liquid supply device according to the present invention can be applied to various devices that supply liquids other than water.

<Liquid supply device>
With reference to FIG. 1, a liquid supply device according to this embodiment will be described. FIG. 1 is a simplified diagram of a liquid supply device according to an embodiment of the present invention, including an external view as seen from the front and a cross-sectional view that simply shows the configuration of the main parts inside the part surrounded by an ellipse in the external view. It shows.

The liquid supply device includes a liquid supply device main body 10 and a container 20 that is detachably attached to the liquid supply device main body 10. The liquid supply device main body 10 includes a first spout 11a for cold water, a first lever 12a for pouring out cold water from the first spout 11a, a second spout 11b for hot water, and a second spout 11b for hot water. The second lever 12b is provided for pouring out hot water from the second spout 11b. The liquid supply device main body 10 also includes a container receiver 13 for supporting the container 20 when the container 20 is attached. The container 20 includes a container body 21 that accommodates a liquid (water in this embodiment), and a cap 200 that closes the liquid supply port of the container body 21.

In the following description, the vertical direction of the configuration regarding the liquid supply device main body 10 means the vertical direction when the liquid supply device main body 10 is placed on a horizontal surface. In addition, the vertical direction regarding the container 20 refers to the vertical direction when the container 20 is placed on a horizontal surface (the bottom surface of the container body 21 on the side opposite to the side to which the cap 200 is attached is placed on a horizontal surface). means. Note that in the process of attaching the container 20 to the liquid supply device main body 10 and in the state after being attached, the cap 200 is on the lower side with respect to the container main body 21.

Here, in the liquid supply device main body 10, a shaft member 100 that projects upward from the bottom of the container receiver 13 is provided. This shaft member 100 will be explained with particular reference to FIG. 2. FIG. 2 is an external view showing an example of a shaft member according to an embodiment of the present invention. Note that in Figure 2(a) and Figure 2(b), the basic configuration and operation (function) are the same except for the shapes and dimensions of each part, so the parts with the same basic configuration are The same symbols are given.

The shaft member 100 has a shaft main body portion 110, a stepped surface 112 serving as an upper surface of the shaft main body portion 110, and a tapered portion 120 at a tip end of the stepped surface 112. Note that the tapered portion 120 means a portion thinner than the shaft body portion 110, and does not necessarily need to be configured to become thinner toward the tip. The shaft body portion 110 is a hollow cylindrical portion, and the shaft body portion 110 is provided with an inlet 111 that communicates with the inside of the cylinder. As a result, the liquid flowing in from the inlet 111 passes through the cylinder of the shaft body 110 and is supplied into the liquid supply device body 10 (see the arrow in the cross-sectional view of FIG. 1). The outer circumferential surface of the shaft body portion 110 is formed by a tapered surface whose diameter gradually increases from above to below. Further, in the shaft member 100, an annular groove 130 is provided between the shaft main body portion 110 and the tapered portion 120.

The shape and dimensions of the shaft member 100 vary depending on the manufacturer and product that manufactures the liquid supply device main body 10. That is, the shape of the tapered portion 120 may be a shape in which the periphery of a cylindrical tip is a curved surface, as shown in FIG. 2(a), or a shape in which a portion of a long sphere is formed as shown in FIG. Various shapes can be adopted, such as a cut-out shape. The height H1 of the tapered portion 120 and the groove width H2 of the annular groove 130 also vary. As shown by the dotted line in FIG. 2, a configuration in which a thinner projection 121 is provided at the tip of the tapered portion 120 may also be adopted. Furthermore, the shapes and dimensions of the inflow ports 111 also vary, and the number and arrangement of the inflow ports 111 also vary.

<Cap>
The structure of the cap 200 will be described in more detail with reference to FIGS. 3 and 4. FIG. 3 is an external view of a cap 200 according to an embodiment of the present invention, FIG. 3(a) is a plan view of the cap 200, and FIG. 3(b) is a front view of the cap 200. FIG. 4 is a schematic cross-sectional view of a cap according to an embodiment of the present invention, and corresponds to the AA cross-sectional view in FIG. 3(a). In addition, in FIG. 4, in a state where the cap 200 closes the liquid supply port 21a of the container body 21, a part of the outer shape of the liquid supply port 21a is shown by a thick dotted line.

The cap 200 includes a cap body 210, an auxiliary cap 220, and a thin portion 230 connecting the cap body 210 and the auxiliary cap 220, and these are integrated when not in use.

The cap body 210 includes a top surface 211 having an opening 211a, a first cylindrical portion 212 that hangs down from the top surface 211 and is attached to the liquid supply port 21a, and an opening in the cylinder of the first cylindrical portion 212. A second cylindrical portion 213 is provided to hang down from the portion 211a. The cap body 210 also has a third cylindrical portion 214 inside the first cylindrical portion 212 and outside the second cylindrical portion 213 . All of these first to third cylindrical portions 212, 213, and 214 have a substantially cylindrical shape.

When not in use and when the liquid supply port 21a of the container body 21 is closed with the cap 200, the approximately cylindrical liquid supply port 21a has a first cylindrical portion 212 and a third cylindrical portion 214. It is inserted into the annular gap between the two. As a result, the outer circumferential surface of the liquid supply port 21a and the inner circumferential surface of the first cylindrical portion 212 come into close contact, and the inner circumferential surface of the liquid supply port 21a and the outer circumferential surface of the third cylindrical portion 214 come into close contact. do. Therefore, liquid leakage from between the cap 200 and the liquid supply port 21a of the container body 21 can be sufficiently suppressed without providing a rubber gasket or the like.

A first annular projection 213a and a second annular projection 213b are provided on the inner peripheral surface of the second cylindrical portion 213. In particular, the first annular protrusion 213a has an annular shape for suppressing liquid leakage from the annular gap between the cap body 210 and the shaft member 100 when the container 20 is attached to the liquid supply device body 10. Functions as a seal protrusion.

The auxiliary cap 220 is a bottomed cylindrical member that closes an opening at the end of the second cylindrical portion 213 of the cap body 210. That is, the auxiliary cap 220 includes a cylindrical portion 221 connected to the second cylindrical portion 213 and a bottom portion 222 provided at the lower end of the cylindrical portion 221. That is, the lower end portion of the cylindrical portion 221 is closed by the bottom portion 222. At the upper end of the cylindrical portion 221 of the auxiliary cap 220, a protrusion 224 is provided at least partially in the circumferential direction. More specifically, the cylindrical portion 221 of the auxiliary cap 220 has a cylindrical shape, and a plurality of protrusions 224 are provided in a range of less than 120° in the circumferential direction at the end 221a of the cylindrical portion 221. FIG. 3A shows an example in which four protrusions 224 are provided within the range of angle B (approximately 90 degrees). However, the protrusions 224 need only be provided in a range of less than 120° in the circumferential direction, and the number thereof can be set as appropriate.

Furthermore, an annular engagement protrusion 223 is provided on the inner peripheral surface of the cylindrical portion 221 of the auxiliary cap 220 at the end opposite to the bottom portion 222 . Further, the outer circumferential surface of the cylindrical portion 221 of the auxiliary cap 220 is provided with a step surface 221b that is configured to become narrower on the bottom 222 side.

<Cap operation mechanism>
The operating mechanism of the cap 200 when attaching and detaching the container 20 to and from the liquid supply device main body 10 will be described with reference to FIGS. 5 to 8. 5 to 8 are explanatory views of the mechanism of the cap according to the embodiment of the present invention. In these figures, the structure of the cap 200 is shown in a schematic cross-sectional view, and the container body 21 is omitted. Further, the shaft member 100 is shown externally.

When mounting the container 20 on the liquid supply device main body 10, the container 20 is mounted by placing the container 20 on the container receiver 13 from above. FIG. 5A shows the initial state of the mounting process, and shows a state in which the cap 200 has not reached the tip of the shaft member 100. Then, by moving the container 20 further downward, the tapered portion 120 of the shaft member 100 enters into the auxiliary cap 220, and the step surface 112 of the shaft body portion 110 is brought into contact with the end 221a of the cylindrical portion 221 of the auxiliary cap 220. bump into. In this embodiment, since a plurality of protrusions 224 are provided on the end 221a of the cylindrical portion 221, at least one of these protrusions 224 abuts against the end 221a, and the auxiliary cap 220 touches the shaft body 110. An unbalanced load is received from the step surface 112 of. As a result, as shown in FIG. 5(b), the auxiliary cap 220 receives a force R that causes it to tilt from the cap body 210.

Then, by moving the container 20 further downward, the end 221a of the cylindrical portion of the auxiliary cap 220 is further pressed against the stepped surface 112 of the shaft member 100, and the thin portion 230 is moved around the area where the protrusion 224 is provided. It is gradually broken. By breaking the entire circumference of the thin portion 230, the auxiliary cap 220 is separated from the second cylindrical portion 213.

FIG. 6A shows the state after the auxiliary cap 220 is detached from the cap main body 210. When the auxiliary cap 220 is separated from the cap body 210, the engagement protrusion 223 provided on the inner peripheral surface of the cylindrical portion 221 is inserted into the annular groove 130 provided between the stepped surface 112 and the tapered portion 120 of the shaft member 100. engage with. As a result, the auxiliary cap 220 is held by the tapered portion 120 of the shaft member 100. Further, in the process of attaching the container body 21 to the container receiver 13, the first annular protrusion 213a, which is an annular sealing protrusion, slides against the outer circumferential surface of the shaft body portion 110 of the shaft member 100. When the attachment is completed, the first annular protrusion 213a fits into the annular groove 140 provided on the outer peripheral surface of the shaft body portion 110 of the shaft member 100. FIG. 6(b) shows the state of the cap 200 when the attachment of the container 20 is completed. Note that the outer circumferential surface of the shaft body portion 110 of the shaft member 100 is formed by a tapered surface whose diameter gradually increases from above to below. Therefore, the attachment work of the container 20 is carried out smoothly, and the adhesion force of the first annular protrusion 213a to the outer circumferential surface of the shaft body 110 gradually increases during the attachment process, and the sealing performance is fully exhibited when the attachment is completed. be done.

Next, the operating mechanism of the cap 200 when the container 20 is removed from the liquid supply device main body 10 will be explained. When the container 20 is removed from the liquid supply device main body 10, the container 20 is lifted upward. FIG. 7A shows the state of the cap 200 just before the end of the second cylindrical portion 213 of the cap body 210 passes the end of the cylindrical portion 221 of the auxiliary cap 220 during the process of lifting the container 20 upward. It shows. Further, FIG. 2B shows the state of the cap 200 when the container 20 is further lifted.

In this embodiment, in the process of detaching the container body 21 from the container receiver 13, the auxiliary cap 220 fitted onto the tip of the shaft member 100 has a sealing protrusion (first annular protrusion) at the upper end of the cylindrical portion 221. 213a) into the inside of the second cylindrical part 213. In this embodiment, a chamfer is formed on the entire outer circumferential surface of the end (tip) of the cylindrical portion 221, and a chamfer is formed on the entire inner circumferential surface of the end (tip) of the second cylindrical portion 213. A chamfer is formed around the circumference. Thereby, the cylindrical portion 221 can be inserted into the second cylindrical portion 213 more reliably. Then, the upper end of the cylindrical portion 221 enters the second cylindrical portion 213 until it abuts against the seal projection (first annular projection 213a), and the container 20 is further lifted, so that the auxiliary cap 220 is Separate from member 100. Then, the annular gap between the outer circumferential surface of the cylindrical portion 221 and the inner circumferential surface of the second cylindrical portion 213 is sealed. In this embodiment, when the upper end of the cylindrical portion 221 enters the second cylindrical portion 213 until it hits the first annular protrusion 213a, the step surface 221b of the cylindrical portion 221 and The second annular projection 213b of the second cylindrical portion 213 is in contact with the second annular projection 213b. Thereby, sealing performance can be improved more effectively. FIG. 8 shows the state of the cap 200 after the container 20 is removed from the liquid supply device main body 10. In this way, even when the container 20 is removed, the annular gap between the cap body 210 and the auxiliary cap 220 is sealed, so even if liquid remains in the container body 21, the liquid will not leak to the outside. It is possible to prevent this from happening.

<Excellent points of the cap according to this example>
According to the cap 200 according to this embodiment, the end portion 221a of the cylindrical portion 221 of the auxiliary cap 220 is pressed against the stepped surface 112 of the shaft member 100, and the auxiliary cap 220 separates from the second cylindrical portion 213. It is configured as follows. Therefore, the auxiliary cap 220 can be removed from the cap body 210 regardless of the size and shape of the tapered portion 120 in the shaft member 100. Therefore, the cap 200 can be applied to various liquid supply device main bodies 10. As described above, the versatility of the cap 200 can be improved.

In this embodiment, by providing the protrusion 224 on the end 221a of the cylindrical portion 221 of the auxiliary cap 220, the auxiliary cap 220 receives an uneven load from the stepped surface 112 of the shaft body 110. Thereby, the force required to separate the auxiliary cap 220 from the cap main body 210 can be reduced. As mentioned above, the shape and dimensions of the shaft member 100 vary depending on the manufacturer and product that manufactures the liquid supply device main body 10, and the number and arrangement of the inflow ports 111 provided in the shaft main body 110 also vary. be. Depending on the arrangement of the inlet 111, the stepped surface 112 of the shaft body 110 may not be provided all around the circumference. In the case where only one protrusion 224 is provided, if the protrusion 224 enters a position where the stepped surface 112 is not provided, the uneven load will not act on the auxiliary cap 220 because the protrusion 224 will not touch the stepped surface 112. Put it away. Therefore, in this embodiment, a plurality of protrusions 224 are provided in a range of less than 120° in the circumferential direction at the end 221a of the cylindrical portion 221, so that at least one protrusion 224 contacts the stepped surface 112. . This ensures that an uneven load acts on the auxiliary cap 220 more reliably. However, even if only one protrusion 224 is provided, in a device in which the stepped surface 112 of the shaft body 110 is provided over the entire circumference, an uneven load acts on the auxiliary cap 220, so that the cap 200 The versatility can be made sufficiently high. By providing the protrusions 224 at multiple locations as described above, it is possible to apply an unbalanced load to the auxiliary cap 220 even in devices where the stepped surface 112 of the shaft body portion 110 is not provided over the entire circumference. Therefore, the versatility of the cap 200 can be further enhanced.

Further, in this embodiment, when not in use, the cap main body 210 and the auxiliary cap 220 are integrally provided with a thin wall portion 230 interposed therebetween. Then, as the container body 21 is attached to the container receiver 13, the thin portion 230 is broken and the auxiliary cap 220 is detached from the cap body 210. By adopting such a configuration, the cap 200 can be configured with one component, which can reduce costs, and the connection between the cap body 210 and the auxiliary cap 220 before the auxiliary cap 220 is separated from the cap body 210 is There are no gaps between them. Note that the cap 200 that integrally includes the cap body 210, the auxiliary cap 220, and the thin portion 230 can be obtained by resin molding using a mold.

In this embodiment, the inner peripheral surface of the cylindrical portion 221 of the auxiliary cap 220 is provided with an engagement ring that engages with an annular groove 130 provided between the stepped surface 112 and the tapered portion 120 of the shaft member 100. A protrusion 223 is provided. Thereby, in a state where the auxiliary cap 220 is detached from the cap main body 210, the auxiliary cap 220 can be stably held on the tapered portion 120 of the shaft member 100.

In addition, in this embodiment, the container main body 21 is slid on the outer circumferential surface of the shaft member 100 in the process of attaching the container body 21 to the container receiver 13, and is provided on the outer circumferential surface of the shaft member 100 when the attachment is completed. An annular first annular protrusion 213a that fits into the annular groove 140 is provided. Thereby, it is possible to suppress liquid from leaking from the gap between the cap body 210 and the shaft member 100 during the stage of mounting the container 20 on the container receiver 13 and even after mounting.

Furthermore, in this embodiment, in the process of detaching the container body 21 from the container receiver 13, the auxiliary cap 220 that is fitted onto the tip of the shaft member 100 has the upper end of the cylindrical portion 221 connected to the first annular protrusion 213a. It enters the inside of the second cylindrical part 213 until it hits. Then, the auxiliary cap 220 is detached from the shaft member 100, and the annular gap between the outer circumferential surface of the cylindrical portion 221 and the inner circumferential surface of the second cylindrical portion 213 is sealed. Thereby, even if the container 20 is removed from the container receiver 13 with liquid remaining in the container 20, leakage of the liquid in the container can be suppressed.

(others)
In the above embodiment, a case is shown in which a cap 200 is adopted which integrally includes a cap main body 210, an auxiliary cap 220, and a thin wall portion 230 when not in use. However, as shown in FIG. 9, for example, when not in use, the cap body 210A and the auxiliary cap 220A are configured separately, and the auxiliary cap 220A is press-fitted into the cap body 210A. It can also be adopted. Even when such a configuration is adopted, the same effects as in the above embodiment can be obtained.

Further, like this cap 200A, a configuration without the third cylindrical portion 214 shown in the above embodiment may be adopted. However, when this configuration is adopted, sufficient sealing performance may not be obtained simply by bringing the outer circumferential surface of the liquid supply port 21a and the inner circumferential surface of the first cylindrical portion 212 into close contact with each other. In that case, it is preferable to adopt a configuration in which a rubber gasket 250 is attached to the top surface 211.

DESCRIPTION OF SYMBOLS 10... Liquid supply device main body 11a... First spout 11b... Second spout 12a... First lever 12b... Second lever 20 Container 21... Container body 21a... Liquid supply port 100 Shaft member 110... Shaft body Part 111... Inflow port 112... Step surface 120... Tapered part 121... Projection 130... Annular groove 140... Annular groove 200, 200A... Cap 210... Cap body 211... Top surface 211a... Opening part 212... First cylindrical part 213...Second cylindrical part 213a...First annular projection 213b...Second annular projection 214...Third cylindrical part 220, 220A Auxiliary cap 221...Cylindrical part 221a...End part 221b...Step surface 222... Bottom part 223...Engaging protrusion 224...Protrusion 230...Thin wall portion 250...Gasket

Claims (6)

Liquid supply of a container main body that is detachable from the container receiver in a liquid supply device main body that has a step surface and a tapered portion at the tip than the step surface, and a shaft member that projects upward from the bottom of the container receiver. A cap that closes the mouth,
a top surface having an opening; a first cylindrical portion that hangs down from the top surface and is attached to the liquid supply port; a cap body having a second cylindrical part;
an auxiliary cap that closes a lower end of the second cylindrical part;
In addition to providing
The auxiliary cap has a cylindrical part connected to the second cylindrical part, and a lower end of the cylindrical part is closed,
When the container body is attached to the container receiver, the upper end portion of the auxiliary cap is pressed against the stepped surface of the shaft member, and the auxiliary cap is detached from the second cylindrical portion. A cap characterized in that the upper end portion is provided with a protrusion in at least a portion of the circumferential direction. The cylindrical portion of the auxiliary cap has a cylindrical shape, and a plurality of the protrusions are provided in a range of less than 120° in the circumferential direction at the upper end of the cylindrical portion. cap. When not in use, the cap main body and the auxiliary cap are integrally provided through a thin part, and when the container main body is attached to the container holder, the thin part is broken and the auxiliary cap is removed. The cap according to claim 1 or 2, wherein the cap is detachable from the cap body. The inner peripheral surface of the cylindrical portion of the auxiliary cap is provided with an engaging protrusion that engages with an annular groove provided between the stepped surface and the tapered portion of the shaft member. The cap according to claim 1 or 2. The inner circumferential surface of the second cylindrical portion slides against the outer circumferential surface of the shaft member during the process of attaching the container body to the container receiver, and when the attachment is completed, the shaft 3. The cap according to claim 1, further comprising an annular seal protrusion that fits into an annular groove provided on the outer peripheral surface of the member. In the process of detaching the container body from the container receiver, the auxiliary cap fitted onto the tip of the shaft member moves the second cylindrical portion until the upper end of the cylindrical portion abuts against the seal protrusion. Claim 5 characterized in that the annular gap between the outer circumferential surface of the cylindrical portion and the inner circumferential surface of the second cylindrical portion is sealed by entering inside and separating from the shaft member. cap as described in .

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