CN222748130U - NTC temperature sensor of high insulating leakproofness - Google Patents

Abstract

The utility model provides an NTC temperature sensor with high insulation and sealing performance, belonging to the technical field of circuit elements. It comprises a protective shell, a cover plate is arranged at the bottom of the protective shell, a sensor body is fixedly installed on the top of the cover plate, a welding foot is fixedly connected to the bottom of the sensor body, and a fixing component is used to assemble the cover plate and the protective shell, the fixing component and the assembled cover plate and the protective shell are in conflict, an annular protrusion is arranged on the top of the cover plate, and an annular groove is arranged on the bottom of the protective shell. The utility model sets a sealing ring as a key connecting component, so that the assembly process between the cover plate and the protective shell becomes extremely simple and fast, and the staff can easily and tightly combine the cover plate and the protective shell without complicated operations or tools. Secondly, the sealing ring can greatly improve the overall sealing of the sensor after assembly, which is worthy of promotion and use.

Description

NTC temperature sensor of high insulating leakproofness

Technical Field

The utility model relates to the technical field of circuit elements, in particular to an NTC temperature sensor with high insulation and sealing performance.

Background

The NTC temperature sensor is widely applied to electrical equipment such as an electric pressure cooker, an air conditioner, a refrigerator, a water heater, a water dispenser and the like, and has the characteristics of high sensitivity, simple structure and the like.

The utility model patent of publication No. CN 219870012U proposes a NTC temperature sensor with high insulation tightness, which comprises a protective shell, wherein a rotating shaft groove is arranged on the inner side wall of the protective shell, a rotating shaft is arranged in the rotating shaft groove, a fixing member is arranged on the rotating shaft, a torsion spring is arranged on the outer surface of the rotating shaft, a thermistor is arranged in the protective shell, a wire is arranged at the bottom of the thermistor, an insulating layer is arranged at the bottom of the thermistor, a probe is arranged at one end of the wire far away from the thermistor, and an opening is arranged in the middle of the bottom of the protective shell.

The above cases can play a certain sealing role in the actual use process, but the designed structure is complex and needs to be installed by bolts, thus not only being very time-consuming to assemble, and the production and manufacturing cost is high, and the existing requirements are difficult to meet, so the utility model provides the NTC temperature sensor with high insulation and sealing performance to meet the requirements.

Disclosure of utility model

The technical problem to be solved by the utility model is to provide the NTC temperature sensor sealing ring with high insulation sealing performance as a key connecting part, so that the assembly process between the cover plate and the protective shell is extremely simple, convenient and quick, workers can easily and tightly combine the cover plate and the protective shell without complex operation or tools, and the sealing ring can greatly improve the overall sealing performance of the sensor after assembly, thereby being worthy of popularization and use.

In order to solve the technical problems, the utility model provides the following technical scheme:

The utility model provides a high insulating leakproofness's NTC temperature sensor, includes protective housing, protective housing's bottom is provided with the apron, the top fixed mounting of apron has the sensor main part, the bottom fixedly connected with welding foot of sensor main part, fixed subassembly is used for assembling apron and protective housing, fixed subassembly with the equipment apron is contradicted with protective housing.

Optionally, the top of apron is equipped with annular bulge, annular groove has been seted up to the bottom of protective housing, annular bulge's diameter value is less than annular groove's diameter value.

Optionally, fixed subassembly includes the sealing washer, the sealing washer divide into sealing washer and No. two sealing washer, sealing washer is located annular bulge and annular groove's gap, deformation cavity has all been seted up to the inside of sealing washer both sides, sealing washer both sides all are provided with the spacing arch with deformation cavity integrated into one piece, the spacing draw-in groove with spacing protruding looks adaptation has all been seted up on the opposite face of annular bulge and annular groove.

Optionally, the outside of apron is equipped with the arc arch, no. two sealing parts are arranged in the gap of annular arch and annular groove, and No. two sealing parts's outer end is equipped with spacing portion, spacing portion parcel is in the bellied outside of arc.

Optionally, an everting part is arranged outside the limiting part, and the everting part is of a C-shaped structure.

Optionally, the seal ring is integrally injection molded.

Optionally, the both sides of No. one sealing part are laminated with protective housing and apron respectively, the top and the bottom of No. two sealing parts are laminated with protective housing and apron respectively.

Compared with the prior art, the utility model has at least the following beneficial effects:

in the above scheme, through setting up the sealing washer, the sealing washer is as critical adapting unit for the assembly process between apron and the protective housing becomes very simple and convenient and quick, and the staff need not complicated operation or instrument, can easily combine apron and protective housing closely, and secondly the sealing washer can be very big after the equipment improves the holistic leakproofness of sensor, is worth using widely.

Through setting up integrated into one piece's seal assembly, can realize multiple seal, integrated into one piece structure has ensured seal assembly's integrality and uniformity, do not have extra connection or equipment part, thereby avoided the sealing performance decline that leads to because of gap or defect that junction probably exists, integrated into one piece structure has still improved seal assembly's durability and reliability, because whole sealing washer is made by single material, do not have interface or transition part between the different materials, therefore it has better ageing resistance, corrosion resistance and stand wear and tear resistance, integrated into one piece structure has still simplified the installation and the change process of sealing washer, because the connection between sealing washer and apron and the protective housing is realized through simple pressfitting and buckle mode, consequently the staff need not complicated operation or instrument and can accomplish the installation, integrated into one piece structure has still reduced the material waste and the energy consumption in the production process, very big reduction manufacturing cost.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present utility model and, together with the description, further serve to explain the principles of the utility model and to enable a person skilled in the pertinent art to make and use the utility model.

Fig. 1 is a schematic perspective view of an NTC temperature sensor;

fig. 2 is an assembly view of the NTC temperature sensor;

FIG. 3 is a schematic perspective view of a seal ring;

FIG. 4 is a partial cross-sectional view of a temperature sensor;

fig. 5 is an enlarged schematic view at a of fig. 4.

[ Reference numerals ]

1. The sensor comprises a protective shell, a cover plate, welding pins, sealing rings, a first sealing part, a second sealing part, a first deformation cavity, a second deformation cavity, a limiting protrusion, a second sealing part, a limiting part, a third limiting protrusion, a fourth arc protrusion, a fifth external turning part and a fourth sensor body.

Specific structures and devices are labeled in the drawings to enable clear implementation of embodiments of the utility model, but this is merely illustrative and is not intended to limit the utility model to the specific structures, devices and environments that may be modified or adapted by those of ordinary skill in the art, based on the specific needs.

Detailed Description

The following describes an NTC temperature sensor with high insulation and sealing performance and a method for using the same in detail with reference to the accompanying drawings and specific embodiments. While the utility model has been described herein in detail in order to make the embodiments more detailed, the following embodiments are preferred and can be embodied in other forms as well known to those skilled in the art, and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the utility model to the specific forms disclosed herein.

As shown in fig. 1 to 5, the embodiment of the utility model provides an NTC temperature sensor with high insulation tightness, which comprises a protective housing 1, wherein a cover plate 2 is arranged at the bottom of the protective housing 1, a sensor main body 5 is fixedly arranged at the top of the cover plate 2, a welding foot 3 is fixedly connected at the bottom of the sensor main body 5, a fixing component is used for assembling the cover plate 2 and the protective housing 1, the fixing component is in contact with the assembled cover plate 2 and the protective housing 1, an annular bulge is arranged at the top of the cover plate 2, an annular groove is arranged at the bottom of the protective housing 1, the diameter value of the annular bulge is smaller than that of the annular groove, the fixing component comprises a sealing ring 4, the sealing ring 4 is divided into a first sealing part 401 and a second sealing part 404, the first sealing part 401 is positioned in a gap between the annular bulge and the annular groove, deformation cavities 402 are respectively arranged in the two sides of the first sealing part 401, limiting bulges 403 integrally formed with the deformation cavity 402 are arranged on two sides of the first sealing part 401, limiting clamping grooves matched with the limiting bulges 403 are formed on the opposite surfaces of the annular bulges and the annular grooves, arc-shaped bulges 406 are formed on the outer part of the cover plate 2, the second sealing part 404 is positioned in gaps between the annular bulges and the annular grooves, limiting parts 405 are arranged at the outer ends of the second sealing part 404, the limiting parts 405 wrap the outer parts of the arc-shaped bulges 406, two sides of the first sealing part 401 are respectively attached to the protective shell 1 and the cover plate 2, the top and the bottom of the second sealing part 404 are respectively attached to the protective shell 1 and the cover plate 2, in the use process, the sealing ring 4 is placed at the bottom of the protective shell 1, the first sealing part 401 is ensured to be positioned in the annular grooves, the cover plate 2 is aligned with the protective shell 1, the annular bulges are matched with the annular grooves, because annular bulge inserts the annular groove, deformation cavity 402 of No. one sealing part 401 both sides can receive the extrusion, make spacing protruding 403 can be sunken enter into deformation cavity 402's inside earlier, after the pressure disappears, with spacing draw-in groove tight fit under self elastic effect, realize preliminary fixed, simultaneously, the spacing portion 405 of No. two sealing parts 404 can wrap up in the outside of arc protruding 406, further increase leakproofness and stability, the convenience takes out sealing washer 4, not only can simplify the equipment step of sensor, and can improve the sealed effect of sensor, no. one sealing part 401 and No. two sealing parts 404 form multilayer seal structure between apron 2 and protective housing 1, when apron 2 and protective housing 1 mate, first layer of sealing is realized through deformation cavity 402 and spacing protruding 403 and spacing draw-in groove's cooperation, no. two sealing part 404's spacing portion 405 and eversion portion 407 then form the second floor and seal, ensure that the external environment can't invade inside the sensor, this kind of multilayer seal structure has not only improved the leakproofness, still has strengthened holistic stability and durability.

The outside of spacing portion 405 is equipped with everting portion 407, everting portion 407 is "C" shape structure, can be easily with spacing portion 405 and arc protruding 406 separation through the "C" shape structure of everting portion 407, in the use, can dial everting portion 407 up, and "C" shape structure can make everting portion 407 atress more easily, when everting portion 407 atress upturns, can drive spacing portion 405 and turn up together, and then can make spacing portion 405 and arc protruding 406 separation, and then can conveniently to the split of protective housing 1 and apron 2.

As shown in fig. 3, the sealing ring 4 is formed by injection molding integrally, and can be rapidly injection molded through a fixed mold in the actual manufacturing process, so that the production and manufacturing cost can be greatly reduced, the integral structure can improve the tightness of the whole sealing assembly, compared with the multi-layer sealing provided in a comparison document, the production cost can be reduced, the integral sealing performance of the temperature sensor can be ensured, and the temperature sensor is worthy of popularization and use.

According to the working principle provided by the utility model, all components such as the protective shell 1, the cover plate 2, the sensor main body 5, the welding feet 3 and the sealing ring 4 are prepared, whether all the components are intact is checked, the size matching of the annular bulge and the annular groove is ensured, the sealing ring 4 is placed at the bottom of the protective shell 1, the first sealing part 401 is ensured to be positioned in the annular groove, the sensor main body 5 is fixedly arranged at the top of the cover plate 2, the cover plate 2 is aligned with the protective shell 1, the annular bulge and the annular groove are ensured to be completely matched, in the process, the annular bulge is inserted into the annular groove, deformation cavities 402 at two sides of the first sealing part 401 are extruded, the limiting bulge 403 of the first sealing part 401 is firstly sunken into the deformation cavities 402, after the pressure disappears, the limiting bulge 403 of the first sealing part 401 is tightly matched with the limiting clamping groove under the self elasticity, the primary fixing is realized, the limiting part 405 of the second sealing part 404 is wrapped on the arc bulge 406 outside the cover plate 2, the sealing property and the stability are further increased, the second sealing part 404 is stirred up, the second sealing part 407 is aligned, the annular bulge 407 is easy to the annular bulge 407, the annular bulge 407 is completely matches with the annular groove, in the process, the deformation bulge 403 is pushed up, the annular bulge 403 is firstly, the limiting bulge 403 is pushed up, the limiting bulge 403 is firstly, the limiting bulge 403 is and the sealing part is separated and the flange 405 is separated from the flange 2 after the flange is separated from the flange 2.

The sensor body 5 is disclosed in the prior art in the present utility model and will not be described here too much.

The utility model is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the utility model. In the following description of preferred embodiments of the utility model, specific details are set forth in order to provide a thorough understanding of the utility model, and the utility model will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present utility model.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (7)

1. The utility model provides a high insulating leakproofness's NTC temperature sensor, includes protective housing (1), its characterized in that, the bottom of protective housing (1) is provided with apron (2), the top fixed mounting of apron (2) has sensor main part (5), the bottom fixedly connected with of sensor main part (5) welds foot (3);

The fixing assembly is used for assembling the cover plate (2) and the protective shell (1), and the fixing assembly is in contact with the assembled cover plate (2) and the protective shell (1).

2. The NTC temperature sensor with high insulation and sealing performance according to claim 1, characterized in that the top of the cover plate (2) is provided with an annular protrusion, the bottom of the protective housing (1) is provided with an annular groove, and the diameter value of the annular protrusion is smaller than the diameter value of the annular groove.

3. The NTC temperature sensor with high insulation and sealing performance according to claim 2, wherein the fixing component comprises a sealing ring (4), the sealing ring (4) is divided into a first sealing part (401) and a second sealing part (404), the first sealing part (401) is located in a gap between the annular protrusion and the annular groove, deformation cavities (402) are formed in the inner parts of the two sides of the first sealing part (401), limit protrusions (403) integrally formed with the deformation cavities (402) are formed in the two sides of the first sealing part (401), and limit clamping grooves matched with the limit protrusions (403) are formed in the opposite faces of the annular protrusions and the annular groove.

4. The NTC temperature sensor with high insulation and sealing performance according to claim 3, wherein an arc-shaped protrusion (406) is arranged outside the cover plate (2), the second sealing part (404) is located in a gap between the annular protrusion and the annular groove, a limiting part (405) is arranged at the outer end of the second sealing part (404), and the limiting part (405) is wrapped outside the arc-shaped protrusion (406).

5. The NTC temperature sensor with high insulation and sealability according to claim 4, characterized in that an everting part (407) is provided outside the limiting part (405), and the everting part (407) has a "C" shape structure.

6. A NTC temperature sensor with high insulation and tightness according to claim 3, characterized in that the sealing ring (4) is injection molded in one piece.

7. The NTC temperature sensor with high insulation and sealing performance according to claim 4, wherein two sides of the first sealing part (401) are respectively attached to the protective housing (1) and the cover plate (2), and the top and the bottom of the second sealing part (404) are respectively attached to the protective housing (1) and the cover plate (2).