Automatic testing device for instrument keys

Abstract

The embodiment of the utility model discloses an automatic testing device for instrument keys. The automatic testing device for the instrument key comprises a test board used for placing a tested instrument, the test board comprises a stand column and a guide seat, and the guide seat is movably installed on the stand column; the pushing and pressing assembly is detachably mounted on the guide seat, and the pushing and pressing assembly can linearly slide along the guide seat; the driving assembly is arranged on the test bench, and the driving assembly pushes the pushing and pressing assembly to slide back and forth along the guide seat so as to push and press the key on the tested instrument for fatigue test; the controller is electrically connected with the driving assembly; and the counting assembly is arranged on the guide seat and electrically connected with the controller, and the controller controls the driving assembly to push the pushing and pressing assembly to press the key and then controls the counting assembly to count in each cycle. According to the automatic testing device for the instrument keys, fatigue testing can be directly carried out on the keys on the tested instrument, and the testing precision is greatly improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the mechanical field, in particular to the field of automatic testing of instrument keys. BACKGROUND

[0002] In the development process of instruments / equipment, the developers will design different switch types according to the structure and function requirements of the products, such as press switches, push switches, knob switches and the like; the structures of the switches are various, but all bear the functions of starting and stopping of the equipment, switching of the functions and the like, and the stability and durability are particularly important for the instruments and equipment. The switch of the equipment can be a newly designed switch structure or a finished switch integrated on the equipment; it is necessary to verify the reliability and durability of the newly designed switch structure.

[0003] There are two kinds of testing methods for the keys in the prior art: one is to manually control the start and stop of the keys on the assembled instrument, which is time-consuming and laborious, and the other is to design a special key testing device, but the testing device is to test the fatigue of the keys by separating the keys from the actual application, that is, only the keys are separated from the key application device for fatigue testing, but not the keys installed on the instrument for fatigue testing, which leads to a large error in the test results.

[0004] Therefore, it is necessary to design an automatic testing device capable of directly testing the keys on the instrument. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides an automatic testing device for instrument keys, which solves the problems of low fatigue testing precision of the keys and low testing efficiency caused by the inability to directly test the keys on the tested instrument in the prior art.

[0006] The embodiment of the present application provides an automatic testing device for instrument keys, which includes: a testing table for placing a tested instrument, the testing table includes a stand and a guide seat, the guide seat is movably installed on the stand; a push and press assembly is detachably installed on the guide seat, and the push and press assembly can slide linearly along the guide seat; a driving assembly is arranged on the testing table, the driving assembly drives the push and press assembly to reciprocally slide along the guide seat to push and press the keys on the tested instrument for fatigue testing; a controller is electrically connected with the driving assembly; a counting assembly is arranged on the guide seat and electrically connected with the controller, and the controller controls the counting assembly to count after the driving assembly drives the push and press assembly to press the keys in each cycle.

[0007] The instrument key automatic testing device provided in the application can directly place the instrument to be tested on the test table to correspond the position of the instrument to the guide seat, adjust the relative position between the push component and the instrument to be tested by adjusting the position of the guide seat on the column, ensure that the push component can push the key to be tested on the instrument to be tested, thus can perform fatigue test on the key installed on the instrument, the test precision is higher, meanwhile, the push component can adapt to instruments of different heights by adjusting the position of the guide seat on the column, and can adapt to the test of keys of different instruments and different arrangements by disassembling and replacing the push component adapted to the arrangement of the keys of the instrument, the application range is wide, and the push component slides along the guide seat to perform linear motion of pushing the key, the guide seat provides guiding and supporting effects, the sliding of the push component is stable, the moving path is fixed, the force of pushing the key each time is uniform, the force that the key receives in actual work can be more accurately simulated, the test precision is improved, and the problem that the key fatigue test precision is low due to the fact that the key on the instrument to be tested cannot be directly tested in the prior art is solved; the controller controls the driving component to automatically push the push component to perform automatic test, and the test efficiency is effectively improved.

[0008] In a feasible scheme, the guide seat comprises a seat body, the seat body is provided with a through hole penetrating through the seat body along the axial direction, and a supporting beam extending along the sliding direction of the push component is formed in the through hole; the push component comprises a push member and an auxiliary connecting member, and the push member and the auxiliary connecting member are detachably connected to form a frame and are sleeved on the slide rail. In this way, the installation process of the push component is simplified, and different push members can be designed and replaced according to the shape and arrangement of the keys, without the need to replace the auxiliary connecting member. In addition, the through hole plays a role of avoiding the push component and reducing the weight, and the limiting of the push component by the wall of the through hole can also limit the limit moving distance of the push component.

[0009] In a feasible scheme, the push member comprises a main body part, which is detachably connected with the auxiliary connecting member to form a frame and is sleeved on the supporting beam; and a contact head located at the end of the main body part and used for pushing the key of the instrument to be tested. The contact head simulates the human finger to push the key, reduces the test variable, and improves the test precision.

[0010] In a feasible scheme, a plurality of contact heads are arranged in a three-dimensional space according to the arrangement of the keys of the instrument to be tested. The plurality of contact heads are arranged according to the arrangement of the keys of the instrument to be tested, the application range of the automatic testing device is improved, and the automatic testing device can adapt to a plurality of different instruments to be tested.

[0011] In an implementation, the guide base further comprises a sliding rail and a sliding block, the sliding rail is arranged along the movement direction of the pushing assembly and is fixed on the support beam, the sliding block is arranged on the sliding rail and can slide back and forth, and the sliding block is connected with the pushing assembly. The sliding rail and the sliding block are matched to limit the movement track of the pushing assembly and stably support the movement of the pushing assembly, so that the movement track of the pushing assembly is prevented from deviating during the back-and-forth movement.

[0012] In an implementation, the instrument key automatic testing device further comprises an elastic member, one end of the elastic member is connected with the guide base, and the other end of the elastic member is connected with the pushing assembly to pull the pushing assembly back to the initial position. In this way, the elastic member is used to automatically reset the pushing assembly, and the structure is simple and the cost is low.

[0013] In an implementation, the driving assembly comprises a driving motor which is electrically connected with the controller, a rotating shaft which is arranged on the guide base and is connected with the driving motor, and an eccentric wheel which is arranged on the rotating shaft and can push the pushing assembly to slide along the guide base when the eccentric wheel rotates eccentrically. In this way, the rotating movement of the eccentric wheel can be converted into the linear movement of the pushing assembly, and the testing process is realized.

[0014] In an implementation, an avoiding slot is arranged at the far end of the eccentric wheel from the shaft center, and the driving assembly further comprises a rotating shaft which penetrates the avoiding slot along the axial direction of the stand, and a pushing ring which is arranged at the avoiding slot and is sleeved on the rotating shaft, and at least part of the pushing ring protrudes from the avoiding slot and is used to flexibly contact the pushing assembly. The pushing ring is arranged to flexibly contact the pushing assembly, so that the pushing assembly is prevented from being directly impacted, and the sliding friction between the eccentric wheel and the pushing assembly is converted into rolling friction, so that the pushing assembly is prevented from being deviated from the movement track, and the pressing of the key in the actual work is accurately simulated.

[0015] In an implementation, the counting assembly comprises an inductive signal generating member, an inductor and a counter, the inductive signal generating member is mounted on the eccentric wheel, the inductor is mounted above the guide base and is located on the movement path of the inductive signal generating member, the inductor and the counter are electrically connected with the controller, the inductive signal generating member generates an inductive signal once in one cycle of the eccentric wheel, the inductor receives the inductive signal and transmits the inductive signal to the controller, the controller records the number of inductive signals according to the inductive signal and generates a counting signal which is transmitted to the counter, and the counter receives the counting signal to count.

[0016] In one possible solution, the mounting groove extending along the axial direction of the column is formed in the column, the test table further comprises: a supporting block movably mounted on the column through the cooperation of the mounting groove and the fastener, and the guide seat is mounted on the supporting block; a base provided with a position adjusting groove; and a supporting block connected with the column and detachably mounted on the base through the cooperation of the position adjusting groove and the fastener. In this way, the position of the guide seat on the column can be adjusted by loosening the fastener, and the adjustment mode is simple and the structure is more compact.

[0017] Based on the above solution, the test table with an adjustable position of the guide seat and the pushing and pressing assembly capable of sliding along the guide seat are provided, the direct testing of the keys on the instrument under test is realized, the working force of the keys is directly restored, the testing precision is higher, the controller is used to control the driving assembly to automatically push the pushing and pressing assembly to perform automatic testing, and the testing efficiency is effectively improved. Specifically, the instrument under test can be directly placed on the test table so that the position thereof corresponds to the guide seat, the relative position between the pushing and pressing assembly and the instrument under test can be adjusted by adjusting the position of the guide seat on the column, and it is ensured that the pushing and pressing assembly can push the key to be tested on the instrument under test. In this way, the fatigue test of the keys already installed on the instrument can be performed, the testing precision is higher, the position of the guide seat on the column can be adjusted to adapt to instruments of different heights, the pushing and pressing assembly can be replaced and disassembled according to the arrangement of the keys of the instrument to adapt to the testing of keys of different instruments and different arrangements, the application range is wide, and the pushing and pressing assembly slides along the guide seat to perform the linear motion of pushing the keys. The guide seat provides the guiding and supporting functions, the sliding of the pushing and pressing assembly is stable, the moving path is fixed, the force of pushing the keys each time is uniform, the force that the keys actually receive in the actual work can be more accurately simulated, and the testing precision is improved. 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 the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The overall structure of the instrument key automatic testing device in one embodiment of the present application is shown in the figure.

[0020] Figure 2 The schematic view of the pushing and pressing assembly in the figure is mounted on the guide seat. Figure 1

[0021] Figure 3 Figure 1 ​​Structure diagram of the automatic testing device for instrument keys from another perspective;

[0022] Figure 4 For Figure 3 Structure diagram of the automatic testing device for instrument keys from another perspective;

[0023] Figure 5 For Figure 1 Structure diagram of the test table in the embodiment;

[0024] Figure 6 For Figure 1 Structure diagram of the push assembly in the embodiment;

[0025] Figure 7 Structure diagram of the automatic testing device for instrument keys in another embodiment of the application;

[0026] Figure 8 For Figure 7 Structure diagram of the push assembly in the embodiment.

[0027] Reference numerals in the drawings:

[0028] 1, push assembly; 111, push piece; 1111, main body part; 1112, contact; 112, auxiliary connecting piece; 113, spacer; 121, push piece; 1211, main body part; 1212, contact; 1212a, contact A; 1212b, contact B; 122, auxiliary connecting piece; 2, test table; 21, stand column; 212, mounting groove; 22, guide seat; 221, seat body; 222, slide rail; 223, slide block; 224, through hole; 225, support beam; 23, supporting block; 24, base; 241, position adjusting groove; 25, support block; 26, mounting frame; 3, elastic piece; 4, driving assembly; 41, motor; 42, rotating shaft; 43, eccentric wheel; 431, avoiding groove; 44, rotating shaft; 45, push ring; 5, counting assembly; 51, inductor; 52, inductive signal generating piece; 53, counter. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the application clearer, the following will be combined with the accompanying drawings for the embodiments of the application to clearly and completely describe the technical solutions in the embodiments of the application. Obviously, the described embodiments are some but not all of the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0030] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicatively connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances. The technical solutions of the present application will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in detail in some examples.

[0032] There are various key fatigue test devices in the prior art, but they all test the keys by detaching the keys from the instrument itself, and cannot test the fatigue strength of the keys after the keys are installed on the instrument.

[0033] In fact, after the keys are installed on the instrument, the stress state and working environment will change, which will affect the fatigue strength of the keys. If the keys are separated from the instrument for fatigue testing, there will be certain errors between the test results and the actual use.

[0034] Therefore, the present application provides an instrument key automatic testing device, especially for instruments in the medical field, such as injection pump equipment, atomizer and the like. The instrument key automatic testing device can automatically test the fatigue of the keys after the keys are assembled on the instrument.

[0035] The present embodiment provides an instrument key automatic testing device, as shown in Figure 1 , as shown in Figure 1The diagram shows the overall structure of the automatic instrument button testing device in Embodiment 1. The device includes a test platform 2, a pressing component 1, a driving component 4, a controller (not shown), and a counting component 5. The test platform 2 is used to place the instrument under test. It includes a column 21 and a guide seat 22, with the guide seat 22 movably mounted on the column 21. The pressing component 1 is detachably mounted on the guide seat 22 and can slide linearly along it. The driving component 4 is located on the test platform 2, and the controller is electrically connected to it. The controller automatically controls the driving component 4 to push the pressing component 1 back and forth along the guide seat 22 to press the buttons on the instrument under test for fatigue testing. The counting component 5 is located on the guide seat 22 and electrically connected to the controller. Each cycle, the controller controls the driving component 4 to push the pressing component 1 to press the button, and then controls the counting component 5 to automatically count accordingly.

[0036] The automatic instrument button testing device provided in this application allows the instrument under test to be placed directly on the test platform 2 so that its position corresponds to the guide seat 22. By adjusting the position of the guide seat 22 on the column 21, the relative position between the pushing component 1 and the instrument under test can be adjusted, ensuring that the pushing component 1 can push the button to be tested on the instrument under test. This allows for fatigue testing of buttons already installed on the instrument with higher testing accuracy. At the same time, by adjusting the position of the guide seat 22 on the column 21, it can be adapted to instruments of different heights. The appropriate pushing component 1 can be disassembled and replaced according to the button layout of the instrument, thus adapting to the testing of buttons with different layouts on different instruments, with a wide range of applications. Furthermore, the pushing component 1 slides along the guide seat 22 to push the button in a linear motion. The guide seat 22 provides guidance and support, making the sliding of the pushing component 1 smooth, the movement path fixed, and the force of each button push uniform, which can more accurately simulate the force experienced by the button in actual operation, thus improving testing accuracy. This application also uses a controller to control the drive component 4 to automatically push the pushing component 1 for automatic testing, effectively improving testing efficiency.

[0037] It should be noted that the controller uses existing technologies such as PLC controllers or microcontrollers, which will not be elaborated here.

[0038] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, Figure 4 for Figure 3 A partial structural diagram of the automatic button testing device for Chinese instruments from another perspective. Figure 5This is a schematic diagram of the test platform 2 in Embodiment 1. A mounting groove 212 extending axially along the column 21 is provided on the column 21. The test platform 2 also includes a support block 23. Fasteners are fitted into the mounting groove 212 to allow the support block 23 to be detachably mounted on the column 21. A guide seat 22 is mounted on the support block 23, thus allowing the guide seat 22 to be movably mounted on the column 21. When the height of the instrument does not match the position of the pushing component 1, the position of the guide seat 22 on the column 21 can be adjusted so that the pushing component 1 on the guide seat 22 corresponds to the button position of the instrument under test. This allows for testing of instruments of different heights and sizes, making it widely applicable. In one embodiment, the fastener is threadedly connected to the mounting groove 212. Specifically, the fastener is a threaded structure such as a bolt or screw. A nut is provided in the mounting groove 212 or on the side of the mounting groove 212 facing away from the fastener. The fastener is detachably fixed to the column through the threaded connection between the fastener and the nut, thereby fixing the support block 23 to the column 21.

[0039] In one embodiment, such as Figure 4 As shown, the test bench 2 also includes a base 24 and a support block 25. An adjustment groove 241 is provided on the base 24. The column 21 is connected to the support block 25. The support block 25 is detachably mounted on the base 24 through the engagement of fasteners with the adjustment groove 241. When it is necessary to adjust the position of the column 21 on the base 24, simply loosen the fasteners, adjust the positions of the support block 25 and the column 21 on the base 24, and then tighten the fasteners again to complete the position adjustment. The structure is simple, and the position adjustment steps are quick. In one embodiment, the fasteners are threadedly connected to the adjustment groove 241. Specifically, the fasteners are bolts or screws with threads. A nut is provided in the adjustment groove 241 or on the side of the adjustment groove 241 facing away from the fastener. The fasteners are detachably fixed to the base through the threaded connection between the fasteners and the nut, thereby fixing the support block 25 to the base 24.

[0040] In one embodiment, the fasteners are screws, bolts, etc., and the support block 23 and the support block 25 are both corner bracket structures. By tightening and loosening the bolts on the corner brackets, the position of the guide seat 22 on the column 21 and the position of the column 21 on the base 24 can be adjusted accordingly. The adjustment is simple and the structural cost is low.

[0041] In one embodiment, as shown in Figure 5, the guide seat 22 includes a seat body 221, the seat body 221 having a through hole 224 extending along its own axial direction, and a support beam 225 extending along the sliding direction of the pushing member forming within the through hole 224; the pushing assembly 1 is sleeved on the support beam 225 and located within the through hole 224. The through hole 224 serves to avoid the pushing assembly 1 and reduce weight, while also limiting the ultimate movement distance of the pushing assembly 1 by limiting the position of the pushing assembly 1 through the through hole wall. In other embodiments, the guide seat 22 may not have a through hole 224, and the pushing assembly 1 may be directly installed on the support plane of the guide seat 22.

[0042] like Figure 5 As shown, the guide seat 22 also includes a slide rail 222 and a slider 223. The slide rail extends along the movement direction of the pressing assembly 1 and is fixed on the support beam 225. The slider 223 is reciprocally slidable on the slide rail 222 and is connected to the pressing assembly 1, so that the pressing assembly 1 can reciprocate along the slide rail 222 within the through hole 224 to press the button on the instrument, thereby completing the fatigue test of the button. The cooperation between the slide rail 222 and the slider 223 limits the movement trajectory of the pressing assembly 1 and provides stable support for its movement, preventing deviation of the movement trajectory during reciprocating motion.

[0043] In one embodiment, such as Figures 1 to 3 and Figure 6 As shown, Figure 2 This is a schematic diagram of the push assembly 1 mounted on the guide seat 22. Figure 3 This is a structural schematic diagram of the instrument button automatic testing device from another perspective. Figure 6 This is a schematic diagram of the push assembly 1 in one embodiment. The push assembly 1 includes a push member 111 and an auxiliary connector 112. The push member 111 and the auxiliary connector 112 are detachably connected and fitted around the support beam 225 and the slide rail 222. In this way, the structure of the push member 111 can be designed specifically according to the distribution of the buttons on the instrument. By replacing the push member 111, it can be adapted to the buttons of different instruments without replacing the entire push assembly 1.

[0044] Optional, such as Figure 6 As shown, the pusher 111 includes a main body 1111 and a contact 1112. The main body 1111 and the auxiliary connector 112 are detachably connected to form a frame and are sleeved on the support beam 225. The contact 1112 is located at the end of the main body 1111 and is used to press the button of the instrument under test.

[0045] like Figure 6As shown, in the embodiment, the contact 1112 is provided as a protrusion integrally formed with the main body 1111, and the processing is simplified. In other embodiments, the contact can be provided in different shapes and inclination angles according to the shape of the button. For example, the front end portion of the contact for pushing the button can be provided as an arc-shaped protrusion as shown in the embodiment, for pushing an arc-shaped concave button recessed inward relative to the surface of the instrument. The contact can also be provided in a cylindrical, rectangular or other structure for pushing a conventional button protruding or recessed inward relative to the surface of the instrument. Of course, the contact can also be provided in other special shapes. Figure 8

[0046] In other embodiments, a plurality of contacts are provided, and the plurality of contacts are arranged in a three-dimensional space according to the arrangement of the buttons of the instrument to be tested. For example, the plurality of contacts can be arranged along the axial direction or the lateral direction of the stand 21, and the plurality of contacts can also be provided in different lengths to adapt to a plurality of buttons not in the same plane. Figure 7 Figure 8 In the embodiment shown, Figure 7 is a schematic view of an instrument button automatic testing device in another embodiment, Figure 8 is Figure 7 is a structural schematic view of a pushing assembly 1 in the instrument button automatic testing device in the embodiment, in which two contacts 1212 are provided on the pushing member 121, the two contacts 1212 are respectively a contact A 1212a and a contact B 1212b, the two contacts 1212 are different in shape, the contact A 1212a is an arc-shaped protrusion structure for pushing an arc-shaped concave button recessed inward relative to the surface of the instrument, and the contact B 1212b is a cylindrical structure for pushing a conventional button protruding or recessed inward relative to the surface of the instrument. The two contacts are staggered in front and back to adapt to buttons located in different planes.

[0047] As shown, Figure 6 the pushing assembly 1 is provided in a frame structure, and the frame structure has a plurality of hollows, which is beneficial to reduce the weight. Specifically, the main body 1111 is provided as a rectangular frame structure, and the main body 1111 is provided with a plurality of connecting feet connected with the auxiliary connecting member 112 to realize multi-point connection and stable structure. Of course, in other embodiments, the frame structure of the pushing assembly 1 can be designed according to the distribution of the buttons, and is not limited to the style shown in the figure.

[0048] As shown, Figure 6 the end of the contact 1112 is provided with a receiving groove, and a spacer 113 such as a flexible rubber column or an elastic member 3 is arranged in the receiving groove. In this way, when the pushing member 111 pushes the button, the spacer 113 simulates the flexible pushing of the finger on the button to avoid damage to the button. Specifically, in the embodiment, the spacer is made of rubber material.

[0049] As shown, Figure 2 ​​As shown, the instrument key automatic testing device further comprises an elastic member 3, one end of which is connected with the guide seat 22 and the other end of which is connected with the pushing assembly 1 to pull the pushing assembly 1 back to the initial position. The elastic member 3 is used to make the pushing assembly 1 automatically move back to the initial position due to the restoring force of the elastic member 3 after the pushing assembly 1 is pushed by the driving assembly 4 once, so as to complete a testing cycle without manual participation in recovery, and the degree of automation is higher.

[0050] Specifically, one end of the elastic member 3 is connected with the guide seat 22 and the other end of the elastic member 3 is connected with the auxiliary connecting member 112. In other embodiments, the elastic member 3 can also be connected with the pushing member 111.

[0051] In an embodiment, as shown in the drawings, Figure 2 The elastic member 3 is a spring, of course, in other embodiments, the elastic member 3 can also be an elastic structure such as an elastic band.

[0052] As shown in the drawings, Figure 1 and Figure 5 The driving assembly 4 comprises a driving motor 41, a rotating shaft 42 and an eccentric wheel 43. The driving motor 41 is installed at the bottom of the guide seat 22 and is electrically connected with the controller. The rotating shaft 42 penetrates the guide seat 22 in the vertical direction and is connected with the driving motor 41. The eccentric wheel 43 is arranged on the rotating shaft 42. The controller automatically controls the driving motor 41 to drive the rotating shaft 42 to rotate and in turn drive the eccentric wheel 43 to make eccentric motion. When the eccentric wheel 43 rotates to contact the pushing assembly 1, the pushing assembly 1 is pushed to slide along the guide seat 22 straight to the measured key.

[0053] As shown in the drawings, Figure 4As shown, the eccentric wheel 43 is provided with an avoiding slot 431 at the distal end away from the shaft center, the driving assembly 4 further comprises a rotating shaft 44 and a pushing ring 45, the rotating shaft 44 is arranged along the axial direction of the stand 21 and penetrates the avoiding slot 431, the pushing ring 45 is arranged at the avoiding slot 431 and is sleeved on the rotating shaft 44, at least part of the pushing ring 45 protrudes from the avoiding slot 431 and is used for flexible contact with the pushing assembly 1, since the pushing ring 45 has a certain displacement space in the radial direction of the rotating shaft 44, the part of the pushing ring 45 protruding from the avoiding slot 431 can be in flexible contact with the pushing assembly 1 when the eccentric wheel 43 rotates, and further pushes the pushing assembly 1 to slide and press the key along the guide seat 22 with the rotation of the eccentric wheel 43, the flexible contact can avoid the direct impact of the eccentric wheel 43 on the pushing assembly 1, improve the service life of the pushing assembly 1, and the arrangement of the pushing ring 45 further converts the sliding friction between the pushing ring 45 and the pushing assembly 1 into rolling friction, reduces the friction force of the pushing assembly 1 subjected to the side deviation. The avoiding slot 431 is arranged for accommodating the pushing ring 45, reduces the space occupation volume, and makes the device more compact, in other embodiments, the avoiding slot 431 can not be arranged, and the rotating shaft 44 is directly arranged to penetrate the eccentric wheel 43. Alternatively, in other embodiments, an arc-shaped limiting groove can be arranged on the eccentric wheel 43, a movable ball is embedded in the groove, and the movable ball is partially limited in the arc-shaped groove, so that the flexible contact between the eccentric wheel 43 and the pushing assembly 1 and the conversion of the sliding friction into rolling friction can also be realized.

[0054] Specifically, in the embodiment shown, the pushing ring 45 is arranged in a bearing structure, and the bearing is sleeved on the rotating shaft 44 and can rotate with the rotating shaft 44. Figure 4

[0055] As shown in the embodiment shown, the pushing ring 45 is arranged in a bearing structure, and the bearing is sleeved on the rotating shaft 44 and can rotate with the rotating shaft 44. Figure 1 ​As shown, the counting component 5 includes an inductor 51, an inductive signal generating component 52 and a counter 53, the inductive signal generating component 52 is installed on the eccentric wheel 43, the inductor 51 is installed above the guide seat 22 and on the movement path of the inductive signal generating component 52, the inductor 51 and the counter 53 are electrically connected with the controller respectively, the eccentric wheel 43 rotates one cycle, the inductor 51 receives an inductive signal of the inductive signal generating component 52 and transmits the inductive signal to the controller, the controller records the inductive times according to the inductive signal and generates a counting signal to the counter 53, the counter 53 receives the counting signal to count. In this embodiment, the magnetic induction mode is adopted to transmit the signal, specifically, the inductor 51 is set as a magnetic inductor, the inductive signal generating component 52 is set as a magnet, the magnet is fixed on the guide seat 22, when the eccentric wheel 43 contacts and pushes the pushing assembly 1, the magnet just passes below the magnetic inductor, the magnetic inductor is triggered and generates an electric signal to the controller, the controller receives the electric signal and converts it into a counting signal and transmits it to the counter 53, the counter 53 receives the counting signal to count and display. Of course, in other embodiments, the photoelectric mode can also be used to transmit the signal, so the inductor is set as a light inductor and the inductive signal generating component is set as an infrared light emitting element.

[0056] As shown in Figure 1 The test table 2 also includes a mounting rack 26, the mounting rack 26 is arranged on the guide seat 22, and the inductor 51 is arranged on the mounting rack 26 so that the inductor 51 is above the eccentric wheel 43 and on the movement path of the inductive signal generating component 52. The mounting rack 26 is arranged on the guide seat 22, so that the inductor 51 moves with the guide seat 22, so that the relative position of the inductor 51 and the eccentric wheel 43 does not change, and the position of the inductor 51 does not need to be adjusted every time the test is performed. In other embodiments, the mounting rack 26 can also be arranged on the stand column 21 or other positions.

[0057] The specific structure of the instrument key automatic testing device shown in Figures 1 to 6 The testing process of the instrument key automatic testing device is introduced in detail as follows:

[0058] Test preparation stage: fix the instrument to be tested on the base 24 so that the key to be tested faces the pushing assembly 1, adjust the position of the guide seat 22 on the stand column 21 to match the key to be tested, so that the contact 1112 of the pushing piece 111 is consistent with the height of the key to be tested; adjust the initial position of the eccentric wheel 43 and the initial position of the pushing piece 111 on the slide rail 222, and the distance between the key and the contact 1112 is within 5mm.

[0059] Test phase: the controller is powered on, the controller automatically starts the driving motor 41, the driving motor 41 drives the rotating shaft 42 to rotate and in turn drives the eccentric wheel 43 to rotate, after the eccentric wheel 43 rotates by a certain angle, the pushing ring 45 contacts the side wall of the pushing piece 111; when the eccentric wheel 43 continues to rotate, the pushing ring 45 drives the pushing piece 111 to move linearly along the slide rail 222 of the guide seat 22 towards the key, until the contact 1112 at the end of the pushing piece 111 pushes the key; after the eccentric wheel 43 continues to rotate until the pushing ring 45 and the pushing piece 111 are separated, the pushing assembly 1 drives the pushing assembly 1 to move away from the key along the slide rail 222 under the action of the restoring force of the elastic piece 3 to return to the initial movement position, completing a test cycle. In this test cycle, when the eccentric wheel 43 rotates, the magnet thereon rotates to the lower side of the magnetic inductor 51 to trigger the magnetic inductor 51, the magnetic inductor 51 generates an electrical signal and transmits it to the controller, and the controller controls the counter 53 to count once. Rotate the eccentric wheel 43 for multiple cycles until the preset number of times of pushing the key is completed, and the fatigue test of the key is completed.

[0060] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature, which can be that the first feature and the second feature are in direct contact, or the first feature and the second feature are indirectly in contact through an intermediate medium.

[0061] Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in height than the second feature. The first feature can be "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in height than the second feature.

[0062] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0063] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic testing device for instrument buttons, characterized in that, include: A test stand for placing the instrument under test, the test stand includes a column and a guide seat, the guide seat being movably mounted on the column; A pressing assembly is detachably mounted on the guide seat, and the pressing assembly is capable of sliding linearly along the guide seat; A drive assembly is provided on the test bench. The drive assembly pushes the push assembly to slide back and forth along the guide seat to push the button on the instrument under test for fatigue testing. The controller is electrically connected to the drive component; A counting component is disposed on the guide seat and electrically connected to the controller. In each cycle, the controller controls the drive component to push the push component to press the button and then controls the counting component to count.

2. The automatic instrument button testing device according to claim 1, characterized in that, The guide seat includes a seat body, the seat body having a through hole extending along its own axial direction, and a support beam extending along the sliding direction of the pusher forming inside the through hole; The pushing assembly includes a pushing component and an auxiliary connecting component, wherein the pushing component and the auxiliary connecting component are detachably connected and fitted around the support beam.

3. The automatic instrument button testing device according to claim 2, characterized in that, The pushing component includes: The main body is detachably connected to the auxiliary connector to form a frame and is sleeved on the support beam; The contact, located at the end of the main body, is used to press the button of the instrument under test.

4. The automatic instrument button testing device according to claim 3, characterized in that, Multiple contacts are provided, and these contacts are arranged in a three-dimensional space according to the button layout of the instrument under test.

5. The automatic instrument button testing device according to claim 2, characterized in that, The guide seat also includes a slide rail and a slider. The slide rail extends along the movement direction of the pushing assembly and is fixed on the support beam. The slider is reciprocally slidable on the slide rail and is connected to the pushing assembly.

6. The automatic instrument button testing device according to any one of claims 1-5, characterized in that, It also includes an elastic element, one end of which is connected to the guide seat and the other end of which is connected to the pushing assembly to pull the pushing assembly back to its initial position.

7. The automatic instrument button testing device according to any one of claims 1-5, characterized in that, The driving component includes: A drive motor is electrically connected to the controller; A rotating shaft is mounted on the guide seat and connected to the drive motor; An eccentric wheel is mounted on the rotating shaft, and when the eccentric wheel rotates eccentrically, it can push the pushing assembly to slide along the guide seat.

8. The automatic instrument button testing device according to claim 7, characterized in that, The eccentric wheel has a clearance groove at its far end from the axis, and the drive assembly further includes: A rotating shaft passes through the clearance groove along the axial direction of the column; A push ring is disposed at the clearance groove and sleeved on the rotating shaft, at least a portion of the push ring protruding from the clearance groove for flexible contact with the pushing assembly.

9. The automatic instrument button testing device according to claim 7, characterized in that, The counting assembly includes a signal generator, a sensor, and a counter. The signal generator is mounted on the eccentric wheel, and the sensor is mounted above the guide seat and along the movement path of the signal generator. The sensor and the counter are electrically connected to the controller. When the eccentric wheel rotates for one cycle, the sensor receives a sensing signal from the sensing signal generator and transmits the sensing signal to the controller. The controller records the number of sensing times based on the sensing signal and generates a counting signal, which is then transmitted to the counter. The counter receives the counting signal and performs counting.

10. The automatic instrument button testing device according to any one of claims 1-5, characterized in that, The column has a mounting groove extending along its axial direction. The test bench also includes: A support block is movably mounted on the column by means of fasteners engaging with the mounting groove, and a guide seat is mounted on the support block; A base, wherein an adjustment groove is provided on the base; The support block is connected to the column, and the support block is detachably mounted on the base by means of fasteners and the adjustment groove.

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