Key test device and key test method

Abstract

The application discloses a key testing device and a key testing method. The key testing device comprises a base for carrying a key to be detected; a pressing assembly comprising a pressing head arranged above the base and a transmission mechanism for driving the pressing head; a control system for controlling the transmission mechanism to drive the pressing head to approach the base, thereby pressing the key to be detected; a first detection assembly arranged on the pressing assembly for detecting the pressing force borne by the key to be detected during pressing; and a second detection assembly arranged on the base for detecting whether the pressed key to be detected is in a conducting state; wherein the control system controls the transmission mechanism to drive the pressing head to move away from the base after the key to be detected is in the conducting state, records the pressing force of the key to be detected at multiple time points before the pressing head moves away from the base, and outputs a touch feeling detection result of the key to be detected according to the recorded multiple pressing forces. In the above manner, the key testing device provided by the application can detect the touch feeling of the key.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of key testing, in particular to a key testing device and a key testing method. BACKGROUND

[0002] In the field of electronic products, many electronic products are provided with functional keys, and the touch feeling of the keys is sensitive or dull, which will bring some use illusion to the user.

[0003] For example, the key of the electronic product is sensitive, when the key has been triggered, the feedback received by the user is not obvious, so the user may continue to press the key; when the key is dull, the user applies a certain pressing force to the key, which may cause the user to think that the key has been triggered, but actually it has not been triggered.

[0004] Therefore, it is necessary to provide a key testing device to detect the touch feeling of the key to ensure that each key has uniform touch feeling. SUMMARY

[0005] The present application mainly provides a key testing device and a key testing method to solve the problem that the touch feeling of the key cannot be detected.

[0006] To solve the above technical problems, one technical solution adopted by the present application is to provide a key testing device. The key testing device comprises: a base for carrying a key to be detected; a pressing assembly comprising a pressure head arranged above the base and a transmission mechanism for transmitting the pressure head; a control system for controlling the transmission mechanism to drive the pressure head to approach the base, and then press the key to be detected; a first detection assembly arranged on the pressing assembly for detecting the pressing force borne by the key to be detected during pressing; a second detection assembly arranged on the base for detecting whether the key to be detected in the on state; wherein the control system controls the transmission mechanism to drive the pressure head to move away from the base after the key to be detected is in the on state, and records the pressing force of the key to be detected at multiple time points before the pressure head moves away from the base, and further outputs the touch feeling detection result of the key to be detected according to the recorded multiple pressing forces.

[0007] In a specific embodiment, the pressing assembly further comprises a cantilever beam, one end of the pressure head is connected to the cantilever beam, the other end of the cantilever beam is connected to the transmission mechanism, and the first detection assembly is arranged on the cantilever beam and detects the pressing force by detecting the deformation of the cantilever beam.

[0008] In a specific embodiment, the cantilever beam is provided with a deformation enhancement hole, and the first detection assembly is arranged adjacent to the deformation enhancement hole.

[0009] In an embodiment, the deformation-enhanced hole comprises at least two circular through holes spaced apart from each other and connected to each other, and the at least two circular through holes are arranged in parallel with the axial direction of the base and the bearing surface of the to-be-tested key.

[0010] In an embodiment, the transmission mechanism comprises a motor, a screw rod shaft, a guide shaft and a screw nut, the motor is connected to the screw rod shaft, the guide shaft is arranged in parallel with the screw rod shaft, the screw nut is screw-connected to the screw rod shaft and is in sliding fit with the guide shaft, the other end of the cantilever beam is connected to the screw nut, and the motor drives the cantilever beam to move relative to the base through the screw rod shaft.

[0011] In an embodiment, the key testing device further comprises a guide rail and a sliding block, the guide rail is arranged in parallel with the guide shaft, the sliding block is arranged on both sides of the cantilever beam, and the sliding block is in sliding fit with the guide rail, and the cantilever beam further moves relative to the base under the guidance of the guide rail.

[0012] In an embodiment, the key testing device further comprises a pressing upper plate and a pad, the pressing upper plate is connected to the cantilever beam, and two pads are respectively connected to both opposite sides of the pressing upper plate, and the sliding block is connected to the corresponding pad.

[0013] In an embodiment, the second detection assembly comprises a first electrode, a second electrode and a detection circuit, the first electrode and the second electrode are respectively connected to two key contacts of the to-be-tested key and form a conductive loop when the to-be-tested key is in an on state, and the detection circuit judges whether the to-be-tested key is in the on state by detecting the conductive loop.

[0014] In an embodiment, the control system further controls the transmission mechanism to drive the pressing head away from the base when the first detection assembly detects that the pressing force reaches a limit value.

[0015] In an embodiment, during the pressing of the to-be-tested key, the pressing force has a transition section of gradually increasing first and then gradually decreasing second, the control system compares a first pressing force corresponding to a pressing force peak value in the transition section and a second pressing force when the pressing head is away from the base with a first reference pressure and a second reference pressure respectively, and judges that the touch feeling of the to-be-tested key is qualified when the difference between the first pressing force and the first reference pressure and the difference between the second pressing force and the second reference pressure are within a predetermined allowable range.

[0016] To solve the above technical problems, another technical solution adopted by the present application is to provide a key testing method. The key testing method comprises: a transmission pressure head presses a to-be-tested key, and records the pressing force borne by the to-be-tested key during being pressed; it is judged whether the to-be-tested key is turned on; if yes, the transmission pressure head moves away from the to-be-tested key; and a touch feeling detection result of the to-be-tested key is output according to the recorded pressing forces.

[0017] The present application has the beneficial effect that, unlike the prior art, the present application discloses a key testing device and a key testing method. By setting the first detection assembly to detect the pressing force borne by the to-be-tested key during being pressed, and setting the second detection assembly to detect whether the to-be-tested key is in the on state, the control system can detect and evaluate the touch feeling of the to-be-tested key according to the recorded pressing force, and output the touch feeling detection result of the to-be-tested key. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 is a structural schematic diagram of an embodiment of the key testing device provided by the present application;

[0020] Figure 2 is Figure 1 is an enlarged structural schematic diagram of the A area in

[0021] Figure 3 is Figure 1 is a structural schematic diagram from another perspective;

[0022] Figure 4 is a flowchart of an embodiment of the key testing method provided by the present application;

[0023] Figure 5 is Figure 4 is a supplementary flowchart of S12 in

[0024] Figure 6 is Figure 4 is a flowchart of S14 in DETAILED DESCRIPTION

[0025] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0026] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0027] In this document, the reference to "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor does it necessarily exclude alternative or additional embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] With reference to Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the key testing device provided by the present application.

[0029] The key testing device 100 can be used to detect the touch feeling of the key, and of course, it can also detect whether the key can be triggered, so that the pressing force of the detected and selected key is within the appropriate pressure range, and the user obtains a more uniform touch feeling when operating such keys.

[0030] In the field of electronic products, the touch feeling of the key is too sensitive or too dull, which will bring some use illusion to the user. For example, the key of the electronic product is too sensitive, and when the key has been triggered, the feedback received by the user is not obvious, so the user may continue to press the key; when the key is too dull, the user may think that the key has been triggered by applying a certain pressing force to the key, but in fact it has not been triggered. Therefore, the key testing device 100 provided by the present application can select a type of keys with similar touch feeling according to certain standards.

[0031] As shown in Figure 1 , Figure 2 , the key testing device 100 comprises a base 10, a pressing assembly 20, a control system 30, a first detection assembly 40 and a second detection assembly 50. The pressing assembly 20 presses the key to be tested supported on the base 10. The control system 30 cooperates with the first detection assembly 40 and the second detection assembly 50 to control the whole detection process and record relevant data, and output the touch feeling detection result of the key to be tested.

[0032] Specifically, the base 10 is used to support the key to be tested and serves as a carrier of the rest components. For example, the base 10 comprises a box body 12 and an assembly plate 14 connected to the box body 12. The top side of the box body 12 is used to support the key to be tested, or a platform 13 for assisting in positioning and supporting the key to be tested can be further arranged on the top side of the box body 12, and the platform 13 is provided with grooves for avoiding the pins of the key to be tested.

[0033] The pressing assembly 20 comprises a pressing head 21 arranged above the base 10 and a transmission mechanism 23 for driving the pressing head 21. The transmission mechanism 23 is arranged on the assembly plate 14 and can drive the pressing head 21 to move relative to the base 10 to press the key to be tested.

[0034] The control system 30 is used to control the transmission mechanism 23 to drive the pressing head 21 to approach the base 10 and then press the key to be tested. The control system 30 can be arranged in the box body 12 and is connected with the transmission mechanism 23 to regulate the operation state of the transmission mechanism 23 and thus regulate the operation state of the pressing head 21. For example, before the pressing head 21 reaches the key to be tested, the control system 30 can regulate the transmission mechanism 23 to operate at a high speed, and when the pressing head 21 approaches the transmission mechanism 23 after operating for a period of time, the control system 30 regulates the transmission mechanism 23 to operate at a low speed to slowly press the key to be tested, so as to facilitate subsequent acquisition of a higher pressing force.

[0035] The first detection assembly 40 is arranged on the pressing assembly 20 and is used to detect the pressing force borne by the key to be tested during being pressed. The second detection assembly 50 is arranged on the base 10 and is used to detect whether the key to be tested in the pressed state is in a conductive state.

[0036] The control system 30 controls the transmission mechanism 23 to drive the pressing head 21 to move away from the base 10 after the key to be tested is in the conductive state, and records the pressing force of the key to be tested at multiple time points before the pressing head 21 moves away from the base 10.

[0037] The control system 30 further outputs the touch feeling detection result of the key to be tested according to the recorded multiple pressing forces.

[0038] Specifically, during the pressing of the to-be-tested key, the pressing force has a transition section in which the pressing force first gradually increases and then gradually decreases, and then the pressing force is gradually increasing. The control system 30 compares the first pressing force corresponding to the pressing force peak in the transition section and the second pressing force when the pressure head 21 is away from the base 10 with the first reference pressure and the second reference pressure respectively, and judges that the touch feeling of the to-be-tested key is qualified when the difference between the first pressing force and the first reference pressure and the difference between the second pressing force and the second reference pressure are within a predetermined allowable range.

[0039] The to-be-tested key has a certain ability to resist deformation, so before the pressing force required for the deformation of the to-be-tested key is reached, the pressing force received by the to-be-tested key is gradually increasing, and the to-be-tested key does not deform, and the key cannot be triggered, so the pressing force peak in the transition section is the ability of the to-be-tested key to resist deformation, that is, the first pressing force is the pressing force borne by the to-be-tested key when the to-be-tested key starts to deform, and then the to-be-tested key deforms to release part of the pressing force, so that the pressing force detected by the first detection assembly 40 gradually decreases, and then the pressing force detected by the first detection assembly 40 gradually increases, and the section is terminated due to the triggering of the key, that is, the pressing force at the end of the recorded section is the second pressing force.

[0040] The first pressing force determines the difficulty of pressing the to-be-tested key, and the second pressing force determines whether the to-be-tested key is easy to trigger, so as to jointly determine the touch feeling of the to-be-tested key. The range of detecting the first pressing force and the second pressing force can determine whether the touch feeling of the to-be-tested key is qualified.

[0041] Specifically, as shown in Figure 2 The second detection assembly 50 includes a first electrode 51, a second electrode 52, and a detection circuit (not shown), the first electrode 51 and the second electrode 52 are respectively connected with two key contacts of the to-be-tested key, and form a conductive loop when the to-be-tested key is in a conductive state. The detection circuit judges whether the to-be-tested key is in a conductive state by detecting the conductive loop, and sends a feedback signal to the control system 30 when the to-be-tested key is in a conductive state, and the control system 30 controls the transmission mechanism 23 to drive the pressure head 21 away from the base 10 according to the feedback signal.

[0042] The control system 30 further controls the transmission mechanism 23 to drive the pressure head 21 away from the base 10 when the first detection assembly 40 detects that the pressing force reaches a limit value. Because the to-be-tested key may have a failure condition, the to-be-tested key may not be triggered. In order to avoid further damage to the to-be-tested key, the base 10 or itself, when the detected pressing force reaches the limit value, it can be considered that the to-be-tested key is failed. Therefore, setting the pressing force limit value can prevent the condition of damaging the key testing device 100 due to invalid pressing.

[0043] As shown in Figure 1 , Figure 2 , the pressing assembly 20 further comprises a cantilever beam 22, the pressing head 21 is connected to one end of the cantilever beam 22, the transmission mechanism 23 is connected to the other end of the cantilever beam 22, and the first detection assembly 40 is arranged on the cantilever beam 22 and detects the pressing force by detecting the deformation of the cantilever beam 22.

[0044] Specifically, the cantilever beam 22 is provided with a deformation enhancement hole 220, the first detection assembly 40 is arranged adjacent to the deformation enhancement hole 220 or arranged in the deformation enhancement hole 220, and the pressing force is detected by detecting the deformation of the deformation enhancement hole 220.

[0045] The deformation enhancement hole 220 comprises at least two circular through holes arranged in parallel and in communication with each other, the axial direction of the at least two circular through holes is arranged in parallel with the bearing surface of the base 10 for detecting the keys, and the pressing head 21 bears the pressing force. After the pressing force, the pressing force causes the cantilever beam 22 to bend and deform at the deformation enhancement hole 220, and the deformation is amplified, so that the first detection assembly 40 can accurately detect the pressing force.

[0046] As shown in Figure 3 , the transmission mechanism 23 comprises a motor 230, a screw shaft 231, a guide shaft 232 and a screw nut 234, the motor 230 is connected with the screw shaft 231, the guide shaft 232 is arranged in parallel with the screw shaft 231, the screw nut 234 is screw-connected with the screw shaft 231 and is in sliding fit with the guide shaft 232, the other end of the cantilever beam 22 is connected to the screw nut 234, and the motor 230 drives the cantilever beam 22 to move relative to the base 10 through the screw shaft 231. The guide shaft 232 is arranged to facilitate increasing the accuracy of the movement of the pressing head 21.

[0047] The key testing device 100 further comprises a guide rail 235 and a sliding block 236, the guide rail 235 is arranged in parallel with the guide shaft 232, the sliding block 236 is arranged on both sides of the cantilever beam 22, and the sliding block 236 is arranged in sliding fit with the guide rail 235. The cantilever beam 22 further moves relative to the base 10 under the guidance of the guide rail 235, which can further increase the accuracy of the movement of the pressing head 21, so that the pressing head 21 accurately presses the keys to be detected.

[0048] The key testing device 100 further comprises a pressing upper plate 237 and a pad plate 238, the middle part of the pressing upper plate 237 is connected with the cantilever beam 22, and the two pad plates 238 are respectively connected to the two opposite sides of the pressing upper plate 237, and the sliding block 236 is connected to the corresponding pad plate 238.

[0049] Further, the application also provides a key testing method, as shown in Figure 4 , the method comprises:

[0050] S11: The transmission pressure head presses the to-be-tested key, and records the pressing force borne by the to-be-tested key during being pressed.

[0051] The transmission pressure head 21 presses the to-be-tested key, while the first detection assembly 40 detects the pressing force, and the control system 30 records the pressing force borne by the to-be-tested key at multiple time points during being pressed. Before receiving the control command, the pressure head 21 continuously presses the to-be-tested key, and continuously records the pressing force.

[0052] S12: Determine whether the to-be-tested key is turned on.

[0053] The to-be-tested key is connected with the second detection assembly 50, and the second detection assembly 50 detects whether the to-be-tested key is turned on.

[0054] At the same time, in order to avoid that when the to-be-tested key is invalid, the continuous pressing of the to-be-tested key by the pressure head 21 will cause the damage of the key testing device 100, as shown in the figure, the key testing method further comprises: Figure 5

[0055] S121: Determine whether the pressing force exceeds the limit value.

[0056] During the pressing of the to-be-tested key, it is continuously determined whether the recorded pressing force exceeds the limit value, if the pressing force exceeds the limit value, it is considered that the to-be-tested key is invalid, and it is not necessary to continue pressing, thereby avoiding the damage of the key testing device 100 itself.

[0057] S122: If the limit value is exceeded, the transmission pressure head moves away from the to-be-tested key.

[0058] If it is detected that the pressing force exceeds the limit value, the control system 30 controls the transmission mechanism to drive the pressure head 21 to move away from the to-be-tested key.

[0059] The determination of whether the to-be-tested key is turned on and the determination of whether the pressing force exceeds the limit value are simultaneously performed, and when any one of the two conditions is met, the transmission pressure head moves away from the to-be-tested key.

[0060] S13: If turned on, the transmission pressure head moves away from the to-be-tested key.

[0061] The to-be-tested key is turned on, which indicates that the to-be-tested key is valid, and the testing process of the to-be-tested key has been completed, and then the pressure head moves away from the to-be-tested key to return to the initial position.

[0062] S14: Output the touch feeling detection result of the to-be-tested key according to the recorded multiple pressing forces.

[0063] The control system 30 outputs the touch feeling detection result of the to-be-tested key according to the recorded multiple pressing forces.

[0064] Specifically, as shown in​Figure 6 As shown, the following steps are performed:

[0065] S141: comparing the first pressing force and the second pressing force with the first reference pressure and the second reference pressure respectively.

[0066] Wherein, during the process of the to-be-tested key being pressed, the pressing force has a transition section of gradually increasing first and then gradually decreasing, the first pressing force is the peak value of the pressing force in the transition section, and the second pressing force is the pressing force when the pressing head 21 is away from the base 10.

[0067] And the first pressing force is the pressing force borne by the to-be-tested key when the to-be-tested key starts to deform, and the second pressing force is the pressing force borne by the to-be-tested key when the to-be-tested key is triggered. The first pressing force determines the pressing difficulty of the to-be-tested key, and the second pressing force determines whether the to-be-tested key is easy to trigger, and thus determines the touch feeling of the to-be-tested key together. The first pressing force is compared with the first reference pressure, and the second pressing force is compared with the second reference pressure, to determine whether the touch feeling of the to-be-tested key is qualified.

[0068] S142: outputting that the touch feeling of the to-be-tested key is qualified when confirming that the difference between the first pressing force and the first reference pressure and the difference between the second pressing force and the second reference pressure are within a predetermined allowable range.

[0069] Confirming that the difference between the first pressing force and the first reference pressure is within a predetermined allowable range, and confirming that the difference between the second pressing force and the second reference pressure is within a predetermined allowable range, outputting that the touch feeling of the to-be-tested key is qualified.

[0070] Different from the prior art, the application discloses a key testing device and a key testing method. By setting a first detection component to detect the pressing force borne by the to-be-tested key during the process of being pressed, and setting a second detection component to detect whether the to-be-tested key is in a conducting state, the control system can detect and evaluate the touch feeling of the to-be-tested key according to the recorded pressing force, and output the touch feeling detection result of the to-be-tested key.

[0071] The above is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. A key test device, characterized by, The key testing device comprises: a base for bearing a key to be detected; a pressing assembly comprising a pressing head arranged above the base and a transmission mechanism for driving the pressing head; a control system for controlling the transmission mechanism to drive the pressing head to approach the base and then press the key to be detected; a first detection assembly arranged on the pressing assembly for detecting a pressing force borne by the key to be detected during being pressed; a second detection assembly arranged on the base for detecting whether the key to be detected is in a conductive state when being pressed; wherein the control system controls the transmission mechanism to drive the pressing head to move away from the key to be detected to terminate the detection of the pressing force in response to the key to be detected being in the conductive state, and records the pressing force of the key to be detected at multiple time points before the pressing head moves away from the key to be detected, and further outputs a touch feeling detection result of the key to be detected according to the recorded multiple pressing forces. The pressing assembly further comprises a cantilever beam, one end of the pressing head is connected to the cantilever beam, the other end of the cantilever beam is connected to the transmission mechanism, the first detection assembly is arranged on the cantilever beam and detects the pressing force by detecting the deformation of the cantilever beam, at least two circular through holes are arranged on the cantilever beam and are spaced apart from each other and are in communication with each other, the axial direction of the at least two circular through holes is parallel to the bearing surface of the base to the key to be detected, and the first detection assembly is arranged adjacent to the at least two circular through holes.

2. The key test device of claim 1, wherein, The transmission mechanism comprises a motor, a screw shaft, a guide shaft and a screw nut, the motor is connected to the screw shaft, the guide shaft is arranged parallel to the screw shaft, the screw nut is screw-connected to the screw shaft and is in sliding fit with the guide shaft, the other end of the cantilever beam is connected to the screw nut, and the motor drives the cantilever beam to move relative to the base through the screw shaft.

3. The key test device of claim 2, wherein, The key testing device further comprises a guide rail and a sliding block, the guide rail is arranged parallel to the guide shaft, the sliding block is arranged on both sides of the cantilever beam, and the sliding block is slidingly arranged on the guide rail, and the cantilever beam further moves relative to the base under the guidance of the guide rail.

4. The key test device of claim 3, wherein The key testing device further comprises a pressing upper plate and a pad plate, the pressing upper plate is connected to the cantilever beam, and two pad plates are respectively connected to both opposite sides of the pressing upper plate, and the sliding block is connected to the corresponding pad plate.

5. The key test device of claim 1, wherein The second detection assembly comprises a first electrode, a second electrode and a detection circuit, the first electrode and the second electrode are respectively connected to two key contacts of the key to be detected, and form a conductive loop when the key to be detected is in a conductive state, and the detection circuit judges whether the key to be detected is in a conductive state by detecting the conductive loop.

6. The key test device of claim 1, wherein, The control system further controls the transmission mechanism to drive the pressing head to move away from the key to be detected to terminate the detection of the pressing force when the first detection assembly detects that the pressing force reaches a limit value.

7. The key test device of claim 1, wherein In the process of pressing the to-be-tested key, the pressing force has a transition section of gradually increasing first and then gradually decreasing, the control system compares a first pressing force corresponding to the peak of the pressing force in the transition section and a second pressing force when the to-be-tested key is turned on with a first reference pressure and a second reference pressure respectively, and judges the touch feeling of the to-be-tested key to be qualified when the difference between the first pressing force and the first reference pressure and the difference between the second pressing force and the second reference pressure are within a predetermined allowable range.

8. A key test method characterized by, The key testing method using the key testing device of any one of claims 1-7 comprises: driving the pressing head to press the to-be-tested key and recording the pressing force borne by the to-be-tested key in the process of being pressed; judging whether the to-be-tested key is turned on; if turned on, driving the pressing head away from the to-be-tested key to terminate the detection of the pressing force; outputting the touch feeling detection result of the to-be-tested key according to the recorded pressing forces.

9. The key test method of claim 8, wherein, The step of judging whether the to-be-tested key is turned on further comprises: judging whether the pressing force exceeds a limit value; if exceeding the limit value, driving the pressing head away from the to-be-tested key.

10. The key test method of claim 8, wherein, The step of outputting the touch feeling detection result of the to-be-tested key according to the recorded pressing forces comprises: comparing a first pressing force and a second pressing force with a first reference pressure and a second reference pressure respectively; confirming that the touch feeling of the to-be-tested key is qualified when the difference between the first pressing force and the first reference pressure and the difference between the second pressing force and the second reference pressure are within a predetermined allowable range. In the process of pressing the to-be-tested key, the pressing force has a transition section of gradually increasing first and then gradually decreasing, the first pressing force is the peak of the pressing force in the transition section, and the second pressing force is the pressing force when the to-be-tested key is turned on.

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