CN205228688U - High-speed force test probe - Google Patents

Abstract

The utility model discloses a high-speed force test probe, which comprises a stainless steel probe, an S-shaped weighing sensor, a wiring port, an upper end cover and a lower end cover; the upper end cover and the lower end cover the stainless steel probe and the S-shaped weighing sensor; wherein the stainless steel probe extends outwards out of the upper end cover, and the position of the stainless steel probe in the upper end cover is connected with the S-shaped weighing sensor. The utility model discloses a high-speed force test probe can work under the low impact force state of high frequency, when the button is pushed down, measures the big or small change of button pushing down in-process dynamics. The probe of the utility model contains the S-shaped weighing sensor, has high precision, stable output and small volume, is suitable for being directly assembled on various sound rings and can also be assembled on a stepping motor for high-frequency test; the method is particularly used for keyboard mass production, and can obviously increase efficiency and ensure the accuracy of force signal output when a large number of tests are required.

Description

High Speed Force Test Probes

technical field

The utility model relates to the technical field of probes, in particular to a high-speed force testing probe.

Background technique

With the rapid development of the computer industry, the processing and manufacturing quality of computer accessories is getting higher and higher, especially for the pressing quality of computer keyboards and touch screens. Many manufacturers are not only concerned about the information interaction function between such elastic elements and the main body of the computer, but also require such products to allow users to have a better "pressing feel" experience. To this end, the "feel" of the elastic element is evaluated by establishing a curve of the travel of the elastic element when it is pressed and the force change on the surface of the element. In other words, the curve is the evaluation of the quality of the keyboard. However, the existing evaluation methods still have the disadvantages of low efficiency, poor accuracy, and instability.

Contents of the invention

The utility model aims to solve the above-mentioned technical problems at least to a certain extent, and provides a high-speed force test probe with better use effect.

For solving the problems of the technologies described above, the technical scheme of the utility model is as follows:

High-speed force test probe, including stainless steel probe, S-type load cell, wiring port, upper end cover, and lower end cover; the upper end cover and lower end cover cover the stainless steel probe and S-type load cell; the stainless steel probe extends out of the upper end cover In addition, the stainless steel probe is connected to the S-type load cell in the upper end cover.

The side wall of the S-type load cell is provided with a wiring port, the wiring port is located at the junction of the upper end cover and the lower end cover, and the main body of the wiring port is located outside the upper end cover and the lower end cover.

There are multiple high-precision resistive strain gauges attached to the S-type load cell.

Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

The high-speed force testing probe of the utility model can work in the state of high-frequency and low-impact force, and when the key is pressed, it can measure the change of force in the process of pressing the key. The probe of the utility model contains an S-type weighing sensor, which has high precision, stable output, and small size, and is suitable for being directly assembled on various voice coils, and can also be assembled on a stepping motor for high-frequency testing; it is especially used for keyboard measurement During production, when a large number of tests are required, the utility model can significantly increase the efficiency, and can also ensure the accuracy of the force signal output.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is an exploded structure diagram of the utility model.

detailed description

The accompanying drawings are for illustrative purposes only and should not be construed as limiting the patent.

For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

The technical solutions in the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 2, a high-speed force test probe that can be used as a preferred embodiment of the utility model includes a stainless steel probe 1, an S-type load cell 2, a wiring port 3, an upper end cover 4, and a lower end cover 5.

The upper end cover 4 and the lower end cover 5 cover the stainless steel probe 1 and the S-type load cell 2; wherein the stainless steel probe 1 extends outside the upper end cover 4, and the position of the stainless steel probe 1 inside the upper end cover 4 is the same as that of the S-type weighing sensor. The heavy sensor 2 is connected.

The side wall of the S-type load cell 2 is provided with a connection port 3, the connection port 3 is located at the junction of the upper end cover 4 and the lower end cover 5, and the main body of the connection port 3 is located outside the upper end cover 4 and the lower end cover 5. In addition, multiple high-precision resistive strain gauges 8 are pasted inside the S-type load cell 2 .

In practical applications, the stainless steel probe 1 is used to contact the elastic device: when the top of the stainless steel probe 1 is vertically applied pressure or tension by the elastic device, the pressure is transmitted to the S-type load cell 2 through the stainless steel probe 1; the S-type load cell 2 After a section is compressed, its thinnest part will be deformed, and the slight deformation will cause the resistance value of the high-precision resistive strain gauge 8 pasted on it to change, so that the voltage signal is output to the acquisition device through the terminal 3.

Among them, the upper end cover 4 and the lower end cover 5 provide protection for the S-type load cell 2; There are 3 threaded holes on the bottom of the probe to fix the overall structure of the high-speed force test probe, which can connect the high-speed force test probe to other dynamic components such as voice coil motors.

The structure of the utility model can have a stable force signal output within a certain frequency range, and can protect internal sensors from mechanical damage at the same time. In addition, due to the small size of the high-speed force test probe, it is easy to cooperate with different types of motors or other high-speed one-way motion devices.

To sum up, it is obvious that the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (3)

1. The high-speed force test probe is characterized in that it includes a stainless steel probe, an S-type load cell, a wiring port, an upper end cover, and a lower end cover; the upper end cover and the lower end cover cover the stainless steel probe and the S-type load cell; The outside extends out of the upper end cover, and the stainless steel probe is connected to the S-type load cell at the position inside the upper end cover. 2. The high-speed force test probe according to claim 1, wherein the side wall of the S-type load cell is provided with a connection port, the connection port is located at the junction of the upper end cover and the lower end cover, and the main body of the connection port is located at the junction of the upper end cover and the lower end cover. Except for the upper end cover and the lower end cover. 3. The high-speed force testing probe according to claim 1, characterized in that a plurality of high-precision resistive strain gauges are pasted in the S-shaped load cell.