CN213364203U - Key testing device - Google Patents

Abstract

The utility model provides a button testing arrangement, this button testing arrangement realize accomplishing a plurality of test items such as button life-span test, single-point long press test, single-point multi-frequency test, many buttons cooperation test in turn through the cooperation work of pressing down subassembly and first stroke platform on equipment, can reduce cost, save space, raise the efficiency, are applicable to the volume production.

Description

Key testing device

Technical Field

The utility model relates to a button test technical field especially relates to a button testing arrangement.

Background

The electronic product manufacturing industry is rapidly developing, many electronic products are provided with keys, such as keyboards, calculators, mobile phones and the like, and when the electronic products leave a factory, various key tests are required, such as key life tests, single-key multi-frequency tests, multi-key alternative coordination tests and the like.

Every kind button test item all need be equipped with solitary equipment and professional personnel and operate at present, so every electronic product all need detect through more equipment and more personnel when accomplishing the button test, and work efficiency is low, and is with high costs to electronic product makes a round trip to replace more troublesome and cause the damage to electronic product easily between multiple check out test set.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a key testing device to solve the problems of single testing content and insufficient comprehensive functions of the existing key testing device.

The embodiment of the utility model provides a button testing arrangement includes: mount, link plate subassembly, press subassembly and first stroke platform. Wherein, the link plate subassembly set up in one side of mount, the link plate subassembly for the mount is mobilizable removal along first direction. The pressing assembly is movably connected with the hanging plate assembly along a second direction, and an included angle is formed between the second direction and the first direction. The first stroke table is fixedly connected with the fixing frame, and the first stroke table and the key equipment are arranged oppositely along the second direction. The link plate assembly is configured to be controlled to drive the pressing assembly to move from a first position to a second position along the first direction, and the pressing assembly is controlled to move between the first stroke table and the key device along the second direction to press the key.

In a specific embodiment, the pressing component is configured to press the key between the first stroke stage and the key device when the pressing component is in the second position.

In a specific embodiment, the key test apparatus further includes: the single-point testing power part is positioned above the pressing assembly and connected with the fixing frame, and the single-point testing power part is configured to drive the pressing assembly to reciprocate along the second direction.

In a specific embodiment, the peg board assembly comprises a moving hole penetrating in the second direction. The pressing assembly includes: the telescopic shaft, the first connecting piece, the second connecting piece, the first rolling piece, the second rolling piece and the reset piece. The telescopic shaft is movably arranged in the moving hole, and two ends of the telescopic shaft extend out of two sides of the moving hole. The first connecting piece and the second connecting piece are fixedly connected with the two ends of the telescopic shaft respectively. The piece that resets set up in first connecting piece with between the link plate subassembly. The first rolling part and the second rolling part are respectively connected with the first connecting part and the second connecting part in a rotating mode.

In a specific embodiment, the key testing device further includes a guiding power part fixed on one side of the fixing frame and configured to drive the hanging plate assembly and the pressing assembly to move along the first direction. The hanging plate assembly comprises a hanging piece and a hanging plate, the hanging piece is connected with the guiding power part, the hanging plate is fixedly connected with the hanging piece, and the hanging plate comprises a moving hole which is communicated along the second direction.

In a specific embodiment, the guiding power unit includes a first sliding component and a power mechanism. The first sliding assembly is arranged between the fixed frame and the hanging piece. The power mechanism is in transmission connection with the first sliding assembly.

In a specific embodiment, the first stroke platform comprises a first stroke surface and two guide surfaces, the two guide surfaces are respectively arranged at two ends of the first stroke surface, and included angles are respectively formed between the two guide surfaces and the first stroke surface.

In a specific embodiment, the first stroke stage further comprises a groove. And a second stroke surface of the first stroke platform is formed at the bottom of the groove, and two sides of the second stroke surface are respectively connected with the first stroke surface through the side surfaces of the groove.

In a specific embodiment, the key testing device further includes a second sliding assembly. The second sliding assembly is arranged between the hanging plate assembly and the guiding power part.

In a specific embodiment, the key testing device further comprises a second stroke table and a third rolling member. The second stroke table is fixedly connected with the fixed frame and is positioned below the first stroke table. The third rolling part is located below the hanging plate assembly and is in rotating connection with the hanging plate assembly, and the third rolling part rolls along the second stroke table.

In a specific embodiment, the second rolling element comprises a plurality of pressing heads, and when the pressing assembly is located at the second position, the plurality of pressing heads simultaneously press a plurality of keys.

In one embodiment, the fixture includes side panels, a top panel, and a bottom panel. The hanging plate assembly and the pressing assembly are movably arranged on the side plate. The top plate and the bottom plate are fixedly connected with the top and the bottom of the side plate respectively and extend towards the same direction, the first stroke table is arranged on the bottom surface of the top plate, and the bottom plate is used for placing the key equipment.

The application discloses button testing arrangement through the cooperation work of pressing subassembly and first stroke platform, has solved current testing arrangement function singleness, comprehensive problem inadequately, accomplishes a plurality of test items on single equipment, and the cost is reduced has improved work efficiency, has saved the space.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a key testing device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first stroke table according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a variation of the first stroke stage according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of a hanging plate assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a connection state of the hanging plate assembly and the pressing assembly according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second stroke table according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a variation of the pressing head according to the embodiment of the present invention;

fig. 8 is a schematic diagram of a single point test of an embodiment of the present invention;

FIG. 9 is a schematic diagram of a multi-key alternative coordination test according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a rolling press test according to an embodiment of the present invention.

Description of reference numerals:

1-a fixed mount; 11-side plate; 12-a top plate; 13-a base plate; 2-hanging the plate assembly; 21-hanging parts; 22-hanging the board; 3-a pressing assembly; 31-a telescopic shaft; 32-a first connector; 33-a second connection; 34-a reset piece; 35-a first rolling member; 36-a second rolling member; 4-a first stroke table; 5-single point testing power part; 6-a guiding power part; 61-a first slide assembly; 62-a power mechanism; 7-a second slide assembly; 8-a second stroke stage; 9-a third rolling member; 10-push button; 14-a groove; 15-moving the hole; 16-pressing head; x-a first direction; y-a second direction; a-a first stroke face; b. c-a guide surface; d-a second stroke surface; d1, d 2-guide surface; e-a third stroke face; e1, e2, e 3-adjusting surface.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be understood that, unless otherwise stated, the "connection" may be a direct connection or an indirect connection, and the mechanical connection of the mechanical connection portion may be various, may be connected by an adhesive layer, may be connected by a joint or a welding, or may be any other connection that can achieve the purpose.

Fig. 1 is a schematic structural diagram of a key testing device according to an embodiment of the present invention. As shown in fig. 1, the embodiment of the present invention provides a key testing device, which includes a fixing frame 1, a hanging plate assembly 2, a pressing assembly 3 and a first stroke table 4. Specifically, link plate subassembly 2 sets up in one side of mount 1, link plate subassembly 2 is movably for mount 1 along first direction X and removes. Pressing component 3 along second direction Y with link plate subassembly 2 move the connection, wherein, be formed with the contained angle between second direction Y and the first direction X, the contained angle can be arbitrary angle, does not do specifically and restricts, and the contained angle uses 90 degrees earlier in this embodiment as the example.

In the present embodiment, as shown in fig. 1 and fig. 5, the first stroke table 4 is fixedly connected to the fixing frame 1, and the first stroke table 4 is disposed opposite to the key device along the second direction Y. Specifically, the hanging plate assembly 2 is configured to be controlled to drive the pressing assembly 3 to move from a first position to a second position along a first direction X, and the pressing assembly 3 is controlled to move to a position between the first stroke table 4 and the key device along a second direction Y to press the key 10.

In particular, the pressing assembly 3 is configured such that, in the first position, the top of the pressing assembly 3 is higher than the bottom of the first stroke stage 4. The pressing member 3 is configured such that in the second position the pressing member 3 is located between the first stroke stage 4 and the key device for pressing the key 10.

The embodiment of the utility model provides a button testing arrangement still includes single-point test power portion 5. As shown in fig. 8, the single-point test power unit 5 is disposed above the pressing member 3 and connected to the fixing frame 1, and configured to drive the pressing member 3 to reciprocate in the second direction Y. Specifically, as shown in fig. 8, the key 10 is disposed directly below the single-point test power section 5, and the pressing member 3 moves between the single-point test power section 5 and the key 10. When the single-point test power part 5 presses the pressing component 3, the pressing component moves downwards along the second direction Y and presses the key 10. When the single-point test power unit stops pressing the pressing member 3, the pressing member 3 moves upward away from the key 10 along the second direction Y. Thereby completing the single-point press test of the key device. Further, the pressing frequency of the pressing component 3 by the single-point test power part 5 can be set as required to complete single-point pressing tests such as a single-point multi-click test, a single-point long-press test and the like.

Specifically, the single-point test power unit 5 may be a linear motor, an air cylinder, an electric cylinder, or the like, without limitation. In this embodiment, the single-point test power unit 5 takes an air cylinder as an example, and the air cylinder is simple in principle and structure, easy to install and maintain, and low in requirement on a user.

As shown in fig. 4, in the present embodiment, the peg board assembly 2 includes a moving hole 15 penetrating in the second direction Y. Specifically, the shape of the hole passage of the moving hole 15 is not limited, and in this embodiment, a circular hole is taken as an example. As shown in fig. 5, in the present embodiment, the pressing assembly 3 includes a telescopic shaft 31, a first connecting member 32, a second connecting member 33, a reset member 34, a first rolling member 35, and a second rolling member 36.

Specifically, as shown in fig. 4 and 5, the telescopic shaft 31 is adapted to the moving hole 15, and in this embodiment, the diameter of the telescopic shaft 31 is the same as the diameter of the moving hole 15. The telescopic shaft 31 is movably disposed in the moving hole 15, and both ends of the telescopic shaft 31 protrude from both sides of the moving hole 15. The first connecting member 32 and the second connecting member 33 are configured as round rods having a diameter larger than that of the telescopic shaft 31 and are fixedly connected to both ends of the telescopic shaft 31, respectively. The first rolling member 35 and the second rolling member 36 are first exemplified by rollers, and are rotatably connected to the first connecting member 32 and the second connecting member 33, respectively. A reset member 34 is provided between the first link member 32 and the peg board assembly 2. Specifically, in the present embodiment, the restoring member 34 is first exemplified by a spring. The spring takes place deformation under the exogenic action, and the spring just can the reconversion after removing the exogenic action, and this embodiment utilizes this characteristic of spring to realize reset function. More specifically, the inner diameter of the spring is larger than the diameter of the telescopic shaft 31, and the outer diameter of the spring is smaller than the diameter of the first coupling member 32.

As shown in fig. 8 and 9, when the first rolling member 35 is pressed, the pressing assembly 3 moves downward along the second direction Y and presses the key 10, and the spring is compressed by the downward force of the first connecting member 32 along the second direction Y and the upward force of the peg board assembly 2 along the second direction Y. When the first rolling member 35 is no longer pressed, since the position of the hanging plate assembly 2 is fixedly arranged during the test, only the first connecting member 32 drives the pressing assembly 3 to move upwards along the second direction Y away from the key 10 and stop pressing under the action of the upward elastic force of the spring along the second direction Y.

Further, as shown in fig. 1, the pressing assembly 3 is configured to move from the first position to the second position, wherein the first rolling element 35 rolls along the first stroke block 4 to move the first connecting element 32, the telescopic shaft 31, the second connecting element 33 and the second rolling element 36 along the second direction Y to press the key 10. The pressing member 3 is moved away from the key 10 in the second direction Y by the reset element 34, i.e. from the second position to the first position.

The embodiment of the utility model provides a button testing arrangement still includes direction power portion 6. As shown in fig. 1, specifically, the guiding power part 6 is fixed at one side of the fixed frame 1 and configured to drive the peg board assembly 2 and the pressing assembly 3 to move in the first direction X. Further, the hanging plate assembly comprises a hanging piece 21 and a hanging plate 22, wherein the hanging piece 21 is connected with the guiding power part 6, and the hanging plate 22 is arranged on the outer side of the hanging piece 21 and is fixedly connected with the hanging piece 21. The link plate 22 has a moving hole 15 penetrating in the second direction Y.

Specifically, the guiding power part 6 includes a first sliding assembly 61 and a power mechanism 62. The first sliding assembly 61 is disposed between the fixed frame 1 and the hanging member 21, and the power mechanism 62 is in transmission connection with the first sliding assembly 61. The power mechanism 62 is configured to drive the first sliding assembly 61 to guide the peg board assembly 2 and the pressing assembly 3 to move along the first direction X.

More specifically, in this embodiment, first slip subassembly 61 chooses guide rail and slider for use to realize the guide effect, simple structure, simple to operate satisfy the requirement to the precision simultaneously. The power mechanism 62 first uses a ball screw with high repeated positioning accuracy in cooperation with a motor as an example. The ball screw is the most commonly used transmission element on tool machinery and precision machinery, and the main function is to convert rotary motion into linear motion, and simultaneously has the characteristics of high precision, reversibility and high efficiency. As shown in fig. 1, the guide rail is connected to the fixing frame 1, the lead screw is parallel to the guide rail, the lead screw nut is externally connected to a connection block, the connection block is indirectly connected to the slider through an L-shaped plate, and the L-shaped plate is connected to the hanging member 21. When the motor starts, the screw nut is controlled to move on the screw along the first direction X, and the hanging plate assembly 2 is driven to move along the guide rail, so that the pressing assembly 3 is driven to move along the first direction X.

As shown in fig. 2, the first stroke stage 4 includes a first stroke surface a and two guide surfaces b and c provided at both ends of the first stroke surface a, respectively. Further, the two guide surfaces are respectively formed with an angle with the first stroke surface a, so as to guide the pressing member 3 to roll on the first stroke surface a. Specifically, as shown in fig. 10, the key device is placed directly below the first stroke stage 4, and the pressing member 3 is located between the first stroke stage 4 and the key device. Referring to fig. 1, when the pressing assembly 3 is controlled to move to the position of the first stroke stage 4, the first rolling element 35 contacts the guiding surface b, and the first rolling element 35 rolls downward along the guiding surface b to drive the pressing assembly 3 to move downward along the second direction Y. The pressing assembly 3 presses the key device when the first rolling member 35 rolls on the first stroke surface a. When the first rolling member 35 starts to roll upwards along the guiding surface c, the pressing assembly 3 is moved upwards away from the key device in the second direction Y. The key 10 is thus repeatedly rolled and pressed, and the test of the key life can be completed.

In particular, the height of the first stroke surface a relative to the key 10 can be adjusted according to different key devices.

In an alternative implementation, as shown in fig. 3, the first stroke table 4 further comprises a groove 14, and the groove 14 is arranged on the first stroke table 4 according to specific needs, and is opened downwards, as shown in fig. 3. Specifically, the bottom of the groove 14 forms a second stroke surface d of the first stroke stage 4, and two sides of the second stroke surface d are respectively connected with the first stroke surface a through guide surfaces d1 and d2 on two sides of the groove 14, so that the friction force during the movement of the pressing assembly 3 can be reduced.

Specifically, as shown in fig. 9, when the pressing assembly 3 is configured to move to the groove 14, the first rolling member 35 rolls to the guiding surface d1 and rolls upward along the guiding surface d1, and the pressing assembly 3 is controlled to move reversely along the second direction Y to be away from the key 10, when the first rolling member 35 rolls on the second stroke surface d, the pressing assembly 3 does not press the key device, and when the first rolling member 35 rolls to the guiding surface d2 and rolls downward along the guiding surface d2, the pressing assembly 3 presses the key device again. That is, the pressing member 3 is moved on the first stroke surface a and the second stroke surface d by the guiding power part 6, and thus the interval pressing of the key device is realized. When the pressing component 3 passes through the groove 14, the pressing key equipment is skipped, and when the pressing component moves to the first stroke surface a, the pressing key equipment is pressed again, so that the multi-key alternative matching test is completed.

Further, as shown in fig. 1, the key testing device provided by the embodiment of the present invention further includes a second sliding assembly 7, where the second sliding assembly 7 is disposed between the hanging plate assembly 2 and the guiding power portion 6. Specifically, the second sliding assembly 7 has a slide rail and a sliding plate, wherein the slide rail is connected with the slide block of the first sliding assembly 61 through an L-shaped plate, and the sliding plate is connected with the hanging member 21 of the hanging plate assembly. The second sliding assembly 7 is configured to guide the peg board assembly 2 and the pressing assembly 3 to move simultaneously in the second direction Y. Through the regulating action of second slip subassembly 7 to link plate subassembly 2 and pressing the subassembly 3, can make button testing arrangement satisfy the demand to the test of not co-altitude button equipment.

As shown in fig. 6, the key testing device provided in the embodiment of the present invention further includes a second stroke stage 8. The second stroke table 8 comprises a third stroke surface e with adjustment surfaces e1, e2, e3 of different heights.

Further, please continue to refer to fig. 1, the key testing apparatus according to the embodiment of the present invention further includes a third rolling element 9. The third rolling element 9 is provided as a roller fixedly connected with the pendant 21. Specifically, please refer to fig. 6 again, when the third rolling member 9 is configured to roll between different third stroke surfaces e of the second stroke table 8, the third rolling member 9 is controlled to drive the hanging plate assembly 2 and the pressing assembly 3 to move along the second direction Y. Specifically, when the third rolling member 9 rolls from the adjusting surface e2 to the adjusting surface e1, the third rolling member 9 drives the hanging plate assembly 2 and the pressing assembly 3 to move downwards along the second direction Y through the second sliding assembly 7. When the third rolling member 9 rolls from the adjusting surface e1 to the adjusting surface e3, the third rolling member 9 drives the hanging plate assembly 2 and the pressing assembly 3 to move upward along the second direction Y through the second sliding assembly 7. The height adjustment of the push assembly 3 relative to the push button 10 is thus achieved by the third roller 9 in cooperation with the second travel stage 8, in order to select different test heights for different push button devices.

In particular, the height of the third travel surface e relative to the keys 10 can be adjusted according to the key device. In an alternative implementation, the second rolling member 36 comprises a plurality of pressing heads 16, as shown in fig. 7. Specifically, when the pressing member 3 is located at the second position, the plurality of pressing heads 16 simultaneously press the plurality of keys 10. The number and the installation position of the pressing heads 16 are adjusted according to the test requirements, so that the more comprehensive and accurate test requirements are met.

In the embodiment of the present invention, the fixing frame 1 includes a side plate 11, a top plate 12 and a bottom plate 13. Specifically, the hanging plate assembly 2 and the pressing assembly 3 are movably disposed on the side plate 11, and the top plate 12 and the bottom plate 13 are fixedly connected to the top and bottom of the side plate 11, respectively, and extend in the same direction. Further, the single-point test power unit 5 is provided on the top plate 12, and the first stroke stage 4 is provided on the bottom surface of the top plate 12. The bottom plate 13 is used for placing the key device and is fixedly connected with the second stroke table 8. The power mechanism 62 guiding the power part 6 is fixedly connected with the side plate 11 through two bearing seats, and the guide rail of the first sliding component 61 is arranged on the side plate 11.

The utility model discloses button testing arrangement, press the single-point test of subassembly completion to the button through the setting, realize the synchronous test to many buttons through the replacement press head, realize pressing down the circulation of all buttons through setting up first stroke platform and pressing down subassembly cooperation work, the structural change through first stroke platform realizes pressing down indirectly to keying equipment, current testing arrangement function singleness has been solved from this, comprehensive problem inadequately, accomplish a plurality of test items on single equipment, the cost is reduced, the work efficiency is improved, the space is saved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (12)

1. A key test apparatus for testing keys (10) of a key device, the key test apparatus comprising:

a fixed frame (1);

the hanging plate assembly (2) is arranged on one side of the fixed frame (1), and the hanging plate assembly (2) can movably move relative to the fixed frame (1) along a first direction (X);

the pressing component (3) is movably connected with the hanging plate component (2) along a second direction (Y), and an included angle is formed between the second direction (Y) and the first direction (X);

the first stroke table (4) is fixedly connected with the fixed frame (1), and the first stroke table (4) and the key equipment are arranged oppositely along the second direction (Y);

wherein the hanging plate assembly (2) is configured to be controlled to drive the pressing assembly (3) to move from a first position to a second position along the first direction (X), and the pressing assembly (3) is controlled to move between the first stroke table (4) and the key device along the second direction (Y) to press the key (10).

2. The key test device according to claim 1, characterized in that the pressing member (3) is configured such that in the second position the pressing member (3) presses the key (10) between the first stroke stage (4) and the key device.

3. The key test device of claim 1, further comprising:

the single-point testing power portion (5) is located above the pressing component (3), the single-point testing power portion (5) is connected with the fixing frame (1), and the single-point testing power portion (5) is configured to drive the pressing component (3) to reciprocate along the second direction (Y).

4. Key test device according to claim 1 or 2, characterized in that said peg board assembly (2) comprises a moving hole (15) passing through along said second direction (Y);

the pressing assembly (3) comprises:

a telescopic shaft (31) movably arranged in the moving hole (15), wherein two ends of the telescopic shaft (31) extend out of two sides of the moving hole (15);

the first connecting piece (32) and the second connecting piece (33) are fixedly connected with two ends of the telescopic shaft (31) respectively;

a reset member (34) disposed between the first connector member (32) and the clevis assembly (2);

a first rolling member (35) and a second rolling member (36) which are respectively connected with the first connecting member (32) and the second connecting member (33) in a rotating way.

5. The key test device of claim 1, further comprising:

a guiding power part (6) fixed at one side of the fixed frame (1), the guiding power part (6) being configured to drive the hanging plate assembly (2) and the pressing assembly (3) to move along the first direction (X);

the hanging plate assembly (2) comprises a hanging piece (21) and a hanging plate (22), the hanging piece (21) is connected with the guiding power part (6), the hanging plate (22) is fixedly connected with the hanging piece (21), and the hanging plate (22) comprises a moving hole (15) which is communicated along the second direction (Y).

6. The key press testing device according to claim 5, wherein said guiding power portion (6) comprises:

the first sliding assembly (61) is arranged between the fixed frame (1) and the hanging piece (21);

and the power mechanism (62) is in transmission connection with the first sliding assembly (61).

7. The key test device according to claim 1, wherein the first stroke stage (4) comprises a first stroke surface (a) and two guide surfaces (b and c), the two guide surfaces (b and c) are respectively arranged at two ends of the first stroke surface (a), and the two guide surfaces (b and c) respectively form an included angle with the first stroke surface (a).

8. A key test device according to claim 7, characterized in that the first stroke stage (4) further comprises a recess (14);

the bottom of the groove (14) forms a second stroke surface (d) of the first stroke table (4), and two sides of the second stroke surface (d) are respectively connected with the first stroke surface (a) through the side surface of the groove (14).

9. The key test device of claim 5, further comprising:

and the second sliding assembly (7) is arranged between the hanging plate assembly (2) and the guide power part (6).

10. The key test device of claim 9, further comprising:

the second stroke table (8) is fixedly connected with the fixed frame (1) and is positioned below the first stroke table (4), and the second stroke table (8) is provided with third stroke surfaces (e) with different heights;

and the third rolling part (9) is positioned below the hanging plate assembly (2), the third rolling part (9) is rotatably connected with the hanging plate assembly (2), and the third rolling part (9) rolls along a third stroke surface (e) of the second stroke table (8).

11. A key test device according to claim 4, characterized in that the second roller (36) comprises a plurality of pressing heads (16), and that a plurality of pressing heads (16) simultaneously press a plurality of keys (10) when the pressing assembly (3) is in the second position.

12. A key test device according to claim 1, characterized in that the holder (1) comprises:

a side plate (11), the hanging plate assembly (2) and the pressing assembly (3) being movably arranged on the side plate (11);

the top plate (12) and the bottom plate (13) are fixedly connected with the top and the bottom of the side plate (11) respectively and extend towards the same direction, the first stroke table (4) is arranged on the bottom surface of the top plate (12), and the bottom plate (13) is used for placing the key equipment.

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