Key pressure detection device

Abstract

The utility model relates to the field of key pressure detection, in particular to a key pressure detection device which comprises a pressing assembly, the pressing assembly comprises a first support, a pressure sensor connected with the first support and a probe assembly connected with the pressure sensor through an elastic conduction assembly, and the probe assembly is connected with the first support through a guide device. During detection, the probe assembly abuts against a to-be-detected product, moves towards the pressure sensor along the guide device and abuts against the pressure sensor to obtain a pressure value. The guide device is arranged on the pressing assembly, and the movement direction of the probe assembly is limited by the guide device during pressing detection, so that the probe of the probe assembly can be accurately contacted with the key switch, the deflection phenomenon of the probe assembly is avoided, and invalid detection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of key pressure detection, in particular to a key pressure detection device. Background Art

[0002] For devices with push switches, such as mobile phones, keyboards, etc., the pressure of the push switches needs to be tested before leaving the factory to confirm whether the pressure of the push switches is normal. Generally, a detection mechanism is used to press the push switches, and the pressure sensor captures the pressure value during the pressing process to obtain the pressure value of the push switches. In the prior art, when testing products with small and dense push switch pressing parts, the detection probe is prone to offset when it contacts the push switch, so that the probe does not correctly contact the push switch during the test, resulting in invalid detection. Therefore, how to avoid invalid detection of push switches is a problem that technicians in this field need to consider. Utility Model Content

[0003] The utility model aims to provide a key pressure detection device to solve the problems of invalid pressing when detecting key switch pressing in the prior art.

[0004] The technical solution of the utility model is: a key pressure detection device, including a pressing component, the pressing component includes a first bracket, a pressure sensor connected to the first bracket, a probe component connected to the pressure sensor through an elastic conduction component, the probe component is connected to the first bracket through a guide device, during detection, the probe component contacts the product to be detected, and at the same time moves along the guide device toward the pressure sensor, pressing the pressure sensor to obtain a pressure value.

[0005] Preferably, the probe assembly includes a second bracket and a probe connected to the second bracket;

[0006] The second bracket is connected to the guide device.

[0007] Preferably, the elastic conduction component includes a guide rod with one end connected to the pressure sensor and the other end connected to the second bracket; a spring is sleeved on the guide rod, and the two ends of the spring respectively abut against the second bracket and the pressure sensor.

[0008] Preferably, a notch is provided on the second bracket, and a step is provided at the notch; the end of the guide rod connected to the second bracket passes through the notch and is provided with a limiting ring, and the end of the limiting ring close to the spring is connected to the step, so that the second bracket moves toward the limiting ring in the length direction of the guide rod until the limiting ring contacts the step and stops.

[0009] Preferably, a fixing plate is connected to the pressing component, the fixing plate is connected to the first bracket, and a plurality of pressing components are connected to the fixing plate.

[0010] Preferably, the fixing plate is connected to the limiting plate via a connecting rod, and one end of the pressing assembly away from the fixing plate passes through the limiting plate.

[0011] Preferably, a guide column and a limit rod are provided at one end of the limit plate away from the fixed plate to limit the travel distance and position of the pressing assembly during detection.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] (1) By providing a guide device on the pressing assembly, the movement direction of the probe assembly is limited by the guide device during the pressing test, so that the probe of the probe assembly can accurately contact the key switch, thereby avoiding the occurrence of the probe assembly deflection phenomenon and avoiding invalid detection;

[0014] (2) Multiple pressing components are arranged on the same fixed plate, and the pressing components can be arranged in a variety of ways according to the arrangement of the key switches to be detected, which greatly increases the number of tests at one time, thereby increasing the detection efficiency;

[0015] (3) By setting a guide post and a limit rod on the limit plate, during the test, the guide post and the limit rod are connected to the fixture on which the product to be tested is placed, which can limit the stroke of the pressing component and guide its movement, further increasing the accuracy and stability of the probe pressing the button switch, thereby avoiding the occurrence of invalid detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural schematic diagram of the key pressure detection device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the pressing assembly of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the elastic conduction component of the utility model.

[0020] Wherein: a pressing component 1, a first bracket 11, a pressure sensor 12, an elastic conductive component 13, a guide rod 131, a limiting ring 1311, a spring 132, a notch 133, a step 1331, a probe component 14, a second bracket 141, a probe 142, and a guide device 15;

[0021] Fixed plate 2;

[0022] Carrier plate 3, limiting pin 31;

[0023] Limiting plate 4, guide column 41, limiting rod 42. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0025] like Figure 1-Figure 3 As shown, a key pressure detection device is used for detecting the pressure of a key switch. It includes a pressing component 1 arranged on a fixed plate. A carrier plate 3 is arranged at one end of the pressing component 1 away from the fixed plate 2, and a jig (not shown in the figure) for placing the product to be detected is placed on the carrier plate 3. A limiting pin 31 is arranged on the carrier plate 3, and a limiting hole (not shown in the figure) is arranged on the jig, so that the jig can be stably and accurately placed on the carrier plate 3.

[0026] like Figure 2 As shown, the pressing assembly 1 includes a first bracket 11, a pressure sensor 12 connected to the first bracket 11, and a probe assembly 14 connected to the pressure sensor 12 via an elastic conductive assembly 13. The probe assembly 14 includes a second bracket 141 and a probe 142 connected to the second bracket 141, the second bracket 141 is connected to the first bracket 11 via a guide device 15, and is connected to the elastic conductive assembly 13 at one end of the second bracket 141 away from the probe 142. In this embodiment, the guide device 15 can be a slide rail and a slider, wherein the slide rail and the slider are respectively connected to the second bracket 141 and the first bracket 11.

[0027] like Figure 2-Figure 3 As shown, the elastic conduction component 13 includes a guide rod 131 fixedly connected to the pressure sensor 12 at one end, and connected to the second bracket 141 at the other end; a spring 132 is sleeved on the guide rod 131, and the two ends of the spring 132 respectively contact the second bracket 141 and the pressure sensor 12. A notch 133 is provided on the second bracket 141, and a step 1331 is provided at the notch 133; the end of the guide rod 131 connected to the second bracket 141 passes through the notch 133 and is provided with a limit ring 1311, and the end of the limit ring 1311 close to the spring 132 is connected to the step 1331, so that the second bracket 141 moves in the direction of the limit ring 1311 in the length direction of the guide rod 131 until the limit ring 1311 contacts the step 1331 and stops. In this embodiment, the notch 133 is provided, so that the elastic conduction component 13 can be directly taken out or installed, which is convenient for subsequent maintenance or repair.

[0028] During testing, the entire pressing assembly 1 moves toward the product to be tested, and the probe 142 on the probe assembly 14 first contacts the product to be tested; the pressing assembly 1 continues to move, and while the probe 142 presses against the product to be tested, the spring 132 is compressed, causing the second bracket 141 to move along the guide device 15, and then press against the pressure sensor 12 to obtain a pressure value. It should be noted that in other embodiments, the elastic conductive assembly 13 can be replaced with a rigid connection, but during testing, the probe 142 may rigidly collide with the product to be tested, causing deformation or other forms of damage to the product to be tested; and the elastic connection of the elastic conductive assembly 13 can avoid damage to the product to be tested.

[0029] The pressing component 1 is connected to a fixing plate 2, which is connected to the first bracket 11, and a plurality of pressing components 1 are connected to the fixing plate 2. The fixing plate 2 is connected to a limiting plate 4 via a connecting rod, and the end of the pressing component 1 away from the fixing plate 2 passes through the limiting plate 4 and does not contact the limiting plate 4. A guide column 41 and a limiting rod 42 are provided at the end of the limiting plate 4 away from the fixing plate 2. Correspondingly, a guide sleeve (not shown in the figure) connected to the guide column 41 and a limiting groove (not shown in the figure) connected to the limiting rod 42 are provided on the fixture to limit the travel distance and position of the pressing component 1 during detection.

[0030] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A key pressure detection device, characterized in that: The method comprises a pressing component, which comprises a first bracket, a pressure sensor connected to the first bracket, a probe component connected to the pressure sensor via an elastic conductive component, and the probe component is connected to the first bracket via a guide device. During detection, the probe component contacts the product to be detected and moves along the guide device toward the pressure sensor to obtain a pressure value by pressing the pressure sensor.

2. A key pressure detection device according to claim 1, characterized in that: The probe assembly includes a second bracket and a probe connected to the second bracket; The second bracket is connected to the guide device.

3. A key pressure detection device according to claim 2, characterized in that: The elastic conduction component comprises a guide rod with one end connected to the pressure sensor and the other end connected to the second bracket; a spring is sleeved on the guide rod, and the two ends of the spring respectively abut against the second bracket and the pressure sensor.

4. A key pressure detection device according to claim 3, characterized in that: A notch is provided on the second bracket, and a step is provided at the notch; the end of the guide rod connected to the second bracket passes through the notch and is provided with a limiting ring, and the end of the limiting ring close to the spring is connected to the step, so that the second bracket moves toward the limiting ring in the length direction of the guide rod until the limiting ring contacts the step and stops.

5. A key pressure detection device according to claim 1, characterized in that: The pressing component is connected to a fixing plate, the fixing plate is connected to the first bracket, and a plurality of pressing components are connected to the fixing plate.

6. A key pressure detection device according to claim 5, characterized in that: The fixing plate is connected to the limiting plate via a connecting rod, and one end of the pressing assembly away from the fixing plate passes through the limiting plate.

7. A key pressure detection device according to claim 6, characterized in that: A guide column and a limit rod are arranged at one end of the limit plate away from the fixed plate to limit the travel distance and position of the pressing component during detection.

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