Device for testing pressing performance of silica gel key

Abstract

The utility model discloses a silica gel key pressing performance testing device which comprises a rack and a detection unit. A tool seat is mounted on the upper surface of the front end of the rack, and a movable frame is slidably connected to the rear end of the rack; the detection unit comprises supporting seats, pressing shafts and force measurement sensors, the supporting seats are connected to the middle of the movable frame in a sliding mode, the pressing shafts are connected to the middles of the supporting seats in a sliding mode, the force measurement sensors are arranged at the upper ends of the pressing shafts, and the force measurement sensors are elastically connected with the vertically-corresponding supporting seats; the device further comprises a controller, the controller is arranged at the front end in the machine frame, the output end of the force measuring sensor is electrically connected with the input end of the controller, and the input end of the controller is electrically connected with an external power source. According to the silica gel key pressing performance testing device, the force measuring sensor is movably installed on the moving frame through the spring structure, a good detection effect on key pressure is achieved, and the stability and safety of the performance testing device in use are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel key production, in particular to a silica gel key pressing performance testing device. Background Art

[0002] Silicone keys have a wide range of uses, covering a wide range of fields from electronic products to industrial equipment. Silicone keys are core components used in keyboards to provide elastic support and conduction when pressed. Their working principle is as follows: when the keycap is pressed, the silicone key is deformed by the keycap, exerting pressure on the flexible circuit board to trigger the electrode contact points to contact each other to achieve conduction, and after the pressing is completed, the keycap is reset by the elastic action of the silicone key. After all the silicone keys are assembled on the flexible circuit board, it is necessary to pre-test the pressing feel, conduction performance and rebound performance of the silicone keys. Existing detection devices generally press the keys with the weight of a weight. The weight can only detect whether the key is pressed in place, which is low in cost, but the pressing force cannot generally be accurately detected. It is then detected by a force sensor. The force sensor is fixedly installed. When the key is stuck and the key is tested, the force sensor is prone to over-range and damage. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a silicone button pressing performance testing device. The force sensor is movably installed on the mobile frame through a spring structure, which not only avoids the over-range detection of the force sensor but also does not affect the individual detection of other buttons, thereby having a good detection effect on the button pressure, and also improves the stability and safety of the performance testing device during use, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a silicone keypress performance testing device, comprising a frame and a detection unit;

[0005] Frame: A tooling seat is installed on the upper surface of its front end, and a mobile frame is slidably connected to the rear end of the frame;

[0006] Detection unit: It includes a support base, a pressing shaft and a force sensor. The support base is slidably connected to the middle part of the mobile frame. The middle part of the support base is slidably connected to the pressing shaft. The upper end of the pressing shaft is provided with a force sensor. The force sensor is elastically connected to the vertically corresponding support base;

[0007] Among them: it also includes a controller, which is arranged at the front end of the frame, the output end of the force sensor is electrically connected to the input end of the controller, and the input end of the controller is electrically connected to an external power supply. The force sensor is movably installed on the mobile frame through a spring structure, which not only avoids over-range detection of the force sensor but also does not affect the individual detection of other buttons, thereby having a good detection effect on the button pressure, and also improves the stability and safety of the performance testing device during use.

[0008] Furthermore, the detection unit also includes a support plate, an upper retaining ring, a spring, a lower retaining ring and a sliding column. The upper surface of the force sensor is provided with a support plate, the lower surface of the support plate is provided with symmetrically distributed sliding columns, the sliding columns pass through the vertically corresponding support seats, the lower end of the outer arc surface of the sliding column is provided with a lower retaining ring, the lower end of the outer arc surface of the sliding column is movably sleeved with a spring, the middle part of the outer arc surface of the sliding column is provided with an upper retaining ring, the upper retaining ring is located above the support seat, the spring is located between the lower retaining ring and the support seat, and the force sensor is elastically fixed.

[0009] Furthermore, the upper surface of the support seat is provided with a proximity switch, and the proximity switch is arranged in conjunction with the laterally adjacent upper retaining ring. The output end of the proximity switch is electrically connected to the input end of the controller to facilitate the detection of the position of the sliding column.

[0010] Furthermore, a scale is provided on the left side of the upper surface of the movable frame, and a pointer is provided on the upper surface of the support seat, which is arranged in conjunction with the scale. The left end of the support seat is threadedly connected with a locking bolt, which is arranged in conjunction with the movable frame to facilitate adjustment of the position of the support seat.

[0011] Furthermore, a nylon pad is provided at the lower end of the pressing shaft to prevent the pressing shaft from scratching the button surface.

[0012] Furthermore, an electric push rod is provided at the upper end of the frame, the telescopic end of the electric push rod is fixedly connected to the upper surface of the movable frame, and the input end of the electric push rod is electrically connected to the output end of the controller, so as to facilitate the control of the up and down movement of the movable frame.

[0013] Furthermore, a display screen is provided at the front end of the rack, indicator lights are provided inside the small round holes at the front end of the rack, and a buzzer is provided inside the large round hole at the front end of the rack. The input ends of the display screen, indicator lights and buzzer are all electrically connected to the output end of the controller to facilitate the display of the test results.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The force sensor is movably mounted on the mobile frame through a spring structure. The initial force of the spring is greater than the pressure of the button but within the range of the force sensor. This not only avoids over-range detection of the force sensor but also does not affect the individual detection of other buttons, thereby having a good detection effect on the button pressure and improving the stability and safety of the performance test device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the frame of the utility model;

[0018] Figure 3 This is an enlarged structural diagram of point A of the present invention.

[0019] In the figure: 1 frame, 2 tooling base, 3 mobile frame, 4 detection unit, 41 support base, 42 pressing shaft, 43 force sensor, 44 support plate, 45 upper retaining ring, 46 spring, 47 lower retaining ring, 48 slide column, 5 nylon pad, 6 proximity switch, 7 scale, 8 pointer, 9 locking bolt, 10 controller, 11 electric push rod, 12 display screen, 13 indicator light, 14 buzzer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3, this embodiment provides a technical solution: a silicone key pressing performance test device, comprising a frame 1, a detection unit 4 and a controller 10, the controller 10 is arranged at the front end inside the frame 1; a tooling seat 2 is installed on the upper surface of the front end of the frame 1, the frame 1 provides an installation position for other components, the assembled silicone key panel is placed inside the tooling seat 2, and the tooling seat 2 positions the silicone key panel; the rear end of the frame 1 is slidably connected to a moving frame 3, the upper end of the frame 1 is provided with an electric push rod 11, the telescopic end of the electric push rod 11 is fixedly connected to the upper surface of the moving frame 3, the electric push rod 11 works, the telescopic end of the electric push rod 11 drives the moving frame 3 to slide downward along the frame 1, the input end of the electric push rod 11 is electrically connected to the output end of the controller 10, the front end of the frame 1 is provided with a display screen 12, the small round holes at the front end of the frame 1 are each provided with an indicator light 13, the large round hole at the front end of the frame 1 is provided with a buzzer 14, the input ends of the display screen 12, the indicator light 13 and the buzzer 14 are all electrically connected to the output end of the controller 10.

[0022] Among them, the detection unit 4 includes a support seat 41, a pressing shaft 42 and a force sensor 43. The support seat 41 is slidably connected to the middle part of the mobile frame 3. The middle part of the support seat 41 is slidably connected to the pressing shaft 42. The upper end of the pressing shaft 42 is provided with a force sensor 43 and the output end of the force sensor 43 is electrically connected to the input end of the controller 10. The force sensor 43 is elastically connected to the vertically corresponding support seat 41, and the position of the pressing shaft 42 and the force sensor 43 can be adjusted to ensure that the pressing shaft 42 corresponds to the position of the silicone button; the detection unit 4 also includes Including support plate 44, upper retaining ring 45, spring 46, lower retaining ring 47 and sliding column 48, the upper surface of the force sensor 43 is provided with a support plate 44, the lower surface of the support plate 44 is provided with symmetrically distributed sliding columns 48, the sliding columns 48 all pass through the vertically corresponding support seats 41, the lower end of the outer arc surface of the sliding column 48 is provided with a lower retaining ring 47, the lower end of the outer arc surface of the sliding column 48 is movably sleeved with a spring 46, the middle part of the outer arc surface of the sliding column 48 is provided with an upper retaining ring 45, the upper retaining ring 45 is located above the support seat 41, and the spring 46 is located between the lower retaining ring 47 and the support seat 41.

[0023] Among them, the upper surface of the support seat 41 is provided with a proximity switch 6, and the proximity switch 6 is arranged in conjunction with the laterally adjacent upper retaining ring 45. The proximity switch 6 detects the position of the slide column 48 through the upper retaining ring 45, and then can detect the state of the button being stuck. The output end of the proximity switch 6 is electrically connected to the input end of the controller 10, and a scale 7 is provided on the left side of the upper surface of the movable frame 3. The upper surface of the support seat 41 is provided with a pointer 8, and the pointer 8 is arranged in conjunction with the scale 7. The pointer 8 and the scale 7 facilitate determining the position of the support seat 41. The left end of the support seat 41 is threadedly connected with a locking bolt 9, and the locking bolt 9 is arranged in conjunction with the movable frame 3.

[0024] The working principle of this utility model is as follows:

[0025] When in use, the assembled silicone keypad is placed inside the tooling seat 2, the tooling seat 2 positions the silicone keypad, and the silicone keypad is connected to the input end of the controller 10 using a connecting wire. Then, the locking bolt 9 is rotated to loosen the movable frame 3, and the support seat 41 can slide inside the movable frame 3, so that the position of the pressing shaft 42 and the force sensor 43 can be adjusted to ensure that the pressing shaft 42 corresponds to the position of the silicone keypad.

[0026] Then, the controller 10 is regulated and the electric push rod 11 is started. The telescopic end of the electric push rod 11 drives the movable frame 3 to slide downward along the frame 1. The movable frame 3 drives the force sensor 43 and the pressing shaft 42 downward through the support seat 41, the spring 46, the lower retaining ring 47, the sliding column 48, the upper retaining ring 45 and the support plate 44. The initial force of the spring 46 is greater than the pressure of the key but within the range of the force sensor 43. Therefore, when the key is pressed normally, the spring 46 will not be elastically deformed. The pressing shaft 42 presses the key through the nylon pad 5, and the force sensor 43 detects the pressure of the key.

[0027] When the button is stuck and cannot be pressed, the nylon pad 5 blocks the downward movement of the pressing shaft 42 and the lower retaining ring 47. The lower retaining ring 47 squeezes the spring 46, and the spring 46 undergoes elastic deformation, thereby preventing the force sensor 43 from exceeding the range and being damaged. At the same time, it does not affect the detection of pressure of other buttons. At the same time, after the flexible circuit board is turned on, it sends an electrical signal to the controller 10. The controller 10 collects and analyzes the pressure information and conduction information, and transmits the pressure information to the display screen 12 for display. The conduction information is displayed through the indicator light 13. When there is an abnormality in conduction or pressure, the controller 10 controls the buzzer 14 to work, and the buzzer 14 makes a sound to remind the detection personnel.

[0028] It is worth noting that the proximity switch 6, force sensor 43, controller 10, electric push rod 11, display screen 12, indicator light 13 and buzzer 14 disclosed in the above embodiments can be freely configured according to the actual application scenario. The proximity switch 6 can use a proximity switch of model TLQM5B1, the force sensor 43 can use a micro tension and pressure sensor of model VLY10, the core chip of the controller 10 can use a single-chip microcomputer of model STM32H743, the electric push rod 11 can use an electric push rod of model ANT-26, the display screen 12 can use a display screen of model SH050JGB50-05258Y, the indicator light 13 can use an LED lamp bead, and the buzzer 14 can use a buzzer of model HX-12095-16R. The controller 10 controls the operation of the proximity switch 6, force sensor 43, electric push rod 11, display screen 12, indicator light 13 and buzzer 14 using methods commonly used in the prior art.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for testing the pressing performance of a silicone button, characterized by: It comprises a frame (1) and a detection unit (4); A tooling seat (2) is installed on the upper surface of the front end of the frame (1), and a movable frame (3) is slidably connected to the rear end of the frame (1); The detection unit (4) comprises a support seat (41), a pressing shaft (42) and a force sensor (43); the support seat (41) is slidably connected to the middle part of the movable frame (3); the middle part of the support seat (41) is slidably connected to the pressing shaft (42); the upper end of the pressing shaft (42) is provided with a force sensor (43); the force sensor (43) is elastically connected to the support seat (41) corresponding to the vertical direction; The machine also includes a controller (10), which is arranged at the front end of the frame (1), the output end of the force sensor (43) is electrically connected to the input end of the controller (10), and the input end of the controller (10) is electrically connected to an external power supply.

2. The device for testing the pressing performance of a silicone key according to claim 1, characterized in that: The detection unit (4) further comprises a support plate (44), an upper retaining ring (45), a spring (46), a lower retaining ring (47) and a slide column (48). The upper surface of the force sensor (43) is provided with a support plate (44), the lower surface of the support plate (44) is provided with symmetrically distributed slide columns (48), the slide columns (48) all penetrate the vertically corresponding support seat (41), the lower end of the outer arc surface of the slide column (48) is provided with a lower retaining ring (47), the lower end of the outer arc surface of the slide column (48) is movably sleeved with a spring (46), the middle part of the outer arc surface of the slide column (48) is provided with an upper retaining ring (45), the upper retaining ring (45) is located above the support seat (41), and the spring (46) is located between the lower retaining ring (47) and the support seat (41).

3. The device for testing the pressing performance of a silicone key according to claim 2, characterized in that: The upper surface of the support seat (41) is provided with a proximity switch (6), and the proximity switch (6) is arranged in conjunction with the upper retaining ring (45) adjacent to the horizontal side. The output end of the proximity switch (6) is electrically connected to the input end of the controller (10).

4. The device for testing the pressing performance of a silicone key according to claim 1, characterized in that: A scale (7) is provided on the left side of the upper surface of the movable frame (3), a pointer (8) is provided on the upper surface of each support seat (41), and the pointer (8) is arranged in coordination with the scale (7). The left end of each support seat (41) is threadedly connected with a locking bolt (9), and the locking bolt (9) is arranged in coordination with the movable frame (3).

5. The device for testing the pressing performance of a silicone key according to claim 1, characterized in that: The lower end of each pressing shaft (42) is provided with a nylon pad (5).

6. The device for testing the pressing performance of a silicone key according to claim 1, characterized in that: An electric push rod (11) is provided at the upper end of the frame (1), a telescopic end of the electric push rod (11) is fixedly connected to the upper surface of the movable frame (3), and an input end of the electric push rod (11) is electrically connected to an output end of the controller (10).

7. The device for testing the pressing performance of a silicone key according to claim 1, characterized in that: The front end of the frame (1) is provided with a display screen (12), the interior of the small circular hole at the front end of the frame (1) is provided with an indicator light (13), the interior of the large circular hole at the front end of the frame (1) is provided with a buzzer (14), and the input ends of the display screen (12), the indicator light (13) and the buzzer (14) are all electrically connected to the output end of the controller (10).

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