CN218956742U

CN218956742U - Key switch test fixture

Info

Publication number: CN218956742U
Application number: CN202220540505.7U
Authority: CN
Inventors: 李学锐
Original assignee: Guangzhou Sunho Testing Equipment Co ltd
Current assignee: Guangzhou Sunho Testing Equipment Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2023-05-02
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses a key switch testing jig which comprises a driving shaft capable of rotating and moving forwards and backwards, a mounting seat for mounting the driving shaft, a connecting block, an adjusting shaft and a ball plunger; the drive shaft insert end passes mount pad rigid coupling connecting block, and the connecting block vertically is provided with first through-hole, and the regulating spindle inserts first through-hole, and the connecting block terminal surface transversely is provided with the screw hole, and the screw hole link up with first through-hole, and the screw is twisted the screw hole and is made the regulating spindle be in fixed state, bulb plunger one end and regulating spindle fixed connection. The application driving shaft can rotate and move forwards and backwards, so that the ball plunger can be driven to rotate and move forwards and backwards, and the service life of the key switch is tested. Meanwhile, the adjusting shaft can be adjusted in position relative to the connecting block, so that service life tests of key switches with different specifications can be realized.

Description

Key switch test fixture

Technical Field

The utility model relates to the technical field of machining, in particular to a key switch testing jig.

Background

The switch is an indispensable electrical component in various devices, instruments and meters and home. In any switch, the service life is a problem, and in addition, the service life of the switch is definitely required in the related national standard, so that the service life test of the switch is a test which needs to be carried out by manufacturers, switch users and product quality detection parties, and the service life test equipment of the switch becomes a necessary detection equipment. However, because of the variety of switches and the variety of forms, there is a need for a device that is compatible with different types of switches for detection. Meanwhile, the current test equipment is very easy to cause the sample switch to be influenced by abnormal stress in the test process, so that the switch structure is damaged, and the accuracy of a detection result is influenced.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a key switch testing jig which not only can be compatible with the testing of key switches in different forms and specifications, but also can reduce the damage of stress to the key switches in the detection process, and the technical scheme adopted by the utility model for realizing the purposes is as follows:

a key switch testing jig comprises a driving shaft capable of rotating and moving back and forth, a mounting seat for mounting the driving shaft, a connecting block, an adjusting shaft and a ball plunger;

the drive shaft insert end passes mount pad rigid coupling connecting block, and the connecting block vertically is provided with first through-hole, and the regulating spindle inserts first through-hole, and the connecting block terminal surface transversely is provided with the screw hole, and the screw hole link up with first through-hole, and the screw is screwed in the screw hole and is made the regulating spindle be in fixed state, bulb plunger one end and regulating spindle fixed connection.

The key switch testing jig mainly aims at testing the service lives of key switches of different specifications, when screws are screwed into threaded holes to fix adjusting shafts, when the screws are withdrawn from the threaded holes, the adjusting shafts can be adjusted up and down in the first through holes, in the using process, when the positions of the adjusting shafts are adjusted, the screws are screwed, the adjusting shafts are fixed, at the moment, a driving shaft capable of rotating and moving back and forth is started, so that a ball plunger presses the upper end or the lower end of the key switch, the functions of switching on or switching off of the key switch are realized, and the service lives of the key switch are measured. The ball plunger is internally provided with a spring, so that the damage to the test article caused by too large stress is avoided.

Further, the outside face of the adjusting shaft is provided with a tangent plane which is convenient for the screw to fasten the adjusting shaft, and the tangent plane is right opposite to the threaded hole.

Further, the key switch testing jig further comprises an oil-free bush, wherein the oil-free bush is of a hollow structure, one end of the oil-free bush is inserted into the mounting seat, the other end of the oil-free bush extends outwards along the radial direction to form a fixing plate, the fixing plate is fixedly connected to the outer surface of the mounting seat, and the insertion end of the driving shaft penetrates through the oil-free bush to be fixedly connected with the connecting block.

Further, one end of the adjusting shaft is radially provided with a second through hole, and one end of the ball plunger is fixed in the second through hole.

Furthermore, the adjusting shaft further comprises a nut used for locking the ball plunger, the nut is fixed at one end of the adjusting shaft, the nut is coaxial with the second through hole, and one end of the ball plunger is screwed into the nut to be fixed in the second through hole.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The driving shaft of the ball plunger testing device has the advantages that the driving shaft can rotate and move back and forth, so that the ball plunger can be driven to rotate and move back and forth, and the service life of a key switch is tested. Meanwhile, the adjusting shaft can be adjusted in position relative to the connecting block, so that service life tests of key switches with different specifications can be realized.

(2) The button switch testing jig uses the ball plunger in front, and aims to press a button with spring force, so as to avoid damaging a tested product.

Drawings

Fig. 1 is a perspective view of a key switch testing jig of embodiment 1.

Fig. 2 is a diagram showing the use of the key switch test fixture in the large-sized key switch test.

FIG. 3 is another diagram of a key switch test fixture used in a large-sized key switch test.

Fig. 4 is a diagram showing the use of the key switch test fixture in the small-sized key switch test.

Fig. 5 is another usage diagram of the keyswitch test fixture during the small-sized keyswitch test.

Fig. 6 is an oil-free bushing explosion diagram.

Fig. 7 is an exploded view of the connection block, adjustment shaft and ball plunger.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: as shown in fig. 1 to 7, a key switch test fixture 1 includes a driving shaft 2 that is rotatable and moves forward and backward, a mount 3 that mounts the driving shaft 2, a connection block 4, an adjusting shaft 5, and a ball plunger 6;

the drive shaft inserting end 21 penetrates through the mounting seat 3 to fixedly connect the connecting block 4, the connecting block 4 is longitudinally provided with a first through hole 41, the adjusting shaft 5 is inserted into the first through hole 41, the end face of the connecting block is transversely provided with a threaded hole 42, the threaded hole 42 is communicated with the first through hole 41, a screw is screwed into the threaded hole 42 to enable the adjusting shaft 5 to be in a fixed state, and one end 61 of the ball plunger is fixedly connected with the adjusting shaft 5.

The key switch test fixture 1 mainly aims at testing the service lives of key switches with different specifications, when a screw is screwed into a threaded hole 42 to fix an adjusting shaft 5, when the screw is withdrawn from the threaded hole 42, the adjusting shaft 5 can be adjusted up and down in a first through hole 41, in the using process, when the position of the adjusting shaft 5 is adjusted, the screw is screwed in to fix the adjusting shaft 5, a driving shaft 2 capable of rotating and moving back and forth is started at the moment, a ball plunger 6 is made to press the upper end or the lower end of the key switch, the on-off function of the key switch is realized, and the service life of the key switch is measured. The ball plunger 6 is internally provided with a spring, so that the damage to the test article caused by too large stress is avoided.

In some embodiments, as shown in fig. 7, the outer side 51 of the adjusting shaft is provided with a tangential surface 52 for facilitating the screw tightening of the adjusting shaft 5, and the tangential surface 52 faces the threaded hole 42.

In some embodiments, as shown in fig. 6, the keyswitch testing fixture 1 further includes an oil-free bushing 7, the oil-free bushing 7 is of a hollow structure, one end 71 of the oil-free bushing is inserted into the mounting seat 3, the other end 72 extends radially outwards to form a fixing plate 73, the fixing plate 73 is fixedly connected to the outer surface of the mounting seat 3, and the end of the driving shaft insertion 21 is fixedly connected with the connecting block 4 through the oil-free bushing 7.

In some embodiments, as shown in fig. 7, one end of the adjusting shaft is radially provided with a second through hole 53, and one end 61 of the ball plunger is fixed in the second through hole 53.

In some embodiments, as shown in fig. 7, the adjusting shaft 5 further includes a nut 8 for locking the ball plunger 6, the nut 8 is fixed at one end of the adjusting shaft, the nut 8 is coaxial with the second through hole 53, and one end 61 of the ball plunger is screwed into the nut 8 to be fixed in the second through hole 53.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims

1. The key switch testing jig is characterized by comprising a driving shaft capable of rotating and moving forwards and backwards, a mounting seat for mounting the driving shaft, a connecting block, an adjusting shaft and a ball plunger;

2. The key switch testing jig according to claim 1, wherein the outer side surface of the adjusting shaft is provided with a tangential surface which is convenient for a screw to fasten the adjusting shaft, and the tangential surface is opposite to the threaded hole.

3. The key switch testing jig of claim 1, further comprising an oilless bushing, wherein the oilless bushing is of a hollow structure, one end of the oilless bushing is inserted into the mounting seat, the other end of the oilless bushing extends radially outwards to form a fixing plate, the fixing plate is fixedly connected to the outer surface of the mounting seat, and the insertion end of the driving shaft penetrates through the oilless bushing to be fixedly connected with the connecting block.

4. The key switch testing jig of claim 1, wherein one end of the adjusting shaft is radially provided with a second through hole, and one end of the ball plunger is fixed in the second through hole.

5. The keyswitch test fixture of claim 4, further comprising a nut for locking the ball plunger, the nut being secured to one end of the adjustment shaft, the nut being coaxial with the second through hole, one end of the ball plunger being threaded into the nut and secured within the second through hole.