CN210323089U

CN210323089U - Change-over switch of test fixture

Info

Publication number: CN210323089U
Application number: CN201920909245.4U
Authority: CN
Inventors: 张皓渊; 周全; 肖瑶
Original assignee: Chengdu Zhongdian Aviation Technology Co Ltd
Current assignee: Chengdu Zhongdian Aviation Technology Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-14
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a change over switch of test fixture relates to integrated circuit board test technical field, and it includes the base, be provided with first draw-in groove and second draw-in groove on the base, first draw-in groove is connected with the first strip that pushes away that runs through first draw-in groove, first draw-in groove both sides are provided with and supply the first gliding first spout of strip that pushes away, the second draw-in groove is connected with the second that runs through the second draw-in groove and pushes away the strip, second draw-in groove both sides are provided with and supply the second to push away the gliding second spout of strip, first push away strip and second and push away the bottom that the strip is close to each other and link to each other, first push away strip and second and push away the angle between the strip and be greater than 90, first push away strip and second push away to be provided with between the strip and drive first push away strip and second and push away the strip. The utility model provides a change over switch can effectively switch over test control board, and need not the manual plug control board, has reduced the probability that the control board received the injury.

Description

Change-over switch of test fixture

Technical Field

The utility model belongs to the technical field of the integrated circuit board test technique and specifically relates to a change over switch of test fixture is related to.

Background

In the process of board production test, one test device is often required to be compatible with tests of different types of boards to be tested, but interface definitions of various boards to be tested are usually different, so that the test device is often required to replace a test control card of the test device according to the change of the boards to be tested, and the test control card is electrically connected with the inside of a connector on a bottom plate of the test device through a contact pin. The common switching mode is to switch the test control cards by pulling out and inserting the test control cards manually (i.e. pulling out an a card and inserting a B card), which is easy to cause bending and even breaking of pins due to worker error during production, and sometimes, because the worker forgets to pull out the a card, the worker directly inserts the B card, which causes test failure of the test equipment due to two test control cards in the test equipment, which not only reduces the test efficiency, but also increases the test cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a change over switch of test fixture for change test control board, both improved test control board's switching speed, can prevent again that the workman from causing the injury to test equipment because of misoperation.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a change over switch of test fixture, includes the base, be provided with first draw-in groove and second draw-in groove on the base, first draw-in groove is connected with the first strip that pushes away that runs through first draw-in groove, first draw-in groove both sides are provided with and supply the first gliding first spout of strip that pushes away, the second draw-in groove is connected with the second that runs through the second draw-in groove and pushes away the strip, second draw-in groove both sides are provided with and supply the second to push away the gliding second spout of strip, first strip and the second that pushes away the bottom that the strip is close to each other and links to each other, first strip and the second that pushes away the angle between the strip and be greater than 90, first strip and the second of pushing away are pushed away and are provided with between the strip and drive first.

Further, pushing mechanism pushes away self-locking switch between the strip, set up first spring and second spring between first draw-in groove and second draw-in groove including setting up at first pushing away strip and second, first spring both ends respectively with first pushing away strip and base fixed connection, second spring both ends respectively with the second push away strip and base fixed connection, self-locking switch is including pressing button and third spring, it sets up to the arc to press the button, third spring one end pushes away the junction fixed connection that strip and second pushed away the strip with first, the other end of third spring with press button sliding connection.

Furthermore, the pushing mechanism comprises a fixed rod and a cylindrical sleeve, wherein two ends of the fixed rod are fixedly connected with the first clamping groove and the second clamping groove respectively, the cylindrical sleeve is fixedly connected with the fixed rod, a driving rod, a clamping piece, a connecting rod and a push rod are sequentially arranged in the sleeve from top to bottom, the driving rod is slidably connected with the sleeve, the upper end of the driving rod extends out of the sleeve, a plurality of clamping teeth are uniformly distributed at the lower end of the driving rod, a plurality of first wedge-shaped strips matched with the clamping teeth are arranged on the clamping piece, a second wedge-shaped strip and a third wedge-shaped strip matched with the first wedge-shaped strips are arranged in the sleeve, the height of the second wedge-shaped strip is higher than that of the third wedge-shaped strip, the diameter of the connecting rod is larger than that of the push rod, a fourth spring is sleeved outside the push rod, an opening for the push rod to extend out; the second pushes away the strip and is connected with the fifth spring, the fifth spring other end and base fixed connection, pushing mechanism is located the second and pushes away the strip top.

Furthermore, the upper end of the fourth spring is fixedly connected with the bottom of the connecting rod, and the lower end of the fourth spring is fixedly connected with the sleeve.

Furthermore, the driving rod is provided with a pushing section and a clamping section, the diameter of the clamping section is larger than that of the pushing section, and the diameter of an opening formed in the top of the sleeve for the pushing section to extend out is matched with that of the pushing section.

Furthermore, the clamping seat is sleeved at the lower ends of the first clamping groove and the second clamping groove, and one side of the push rod leans against the clamping seat when the push rod descends to the lowest position.

The utility model has the advantages as follows:

the utility model provides a change over switch of test fixture is when using, insert test control card A and test control card B respectively in first draw-in groove and second draw-in groove, one of them test control card is in user state, when needing the test control card of switch use, utilize pushing mechanism to drive first push away strip and second push away the strip and rotate towards opposite direction, that is push away the strip tip and rotate towards the top of one side of test control card that originally is in user state, make this test control card break away from the connection, another push away the strip and rotate towards the below, make this side control card move down and connect, thus be in user state, the switch is swift, and need not the workman to plug during the switch-over, can reduce because of the workman power consumption improper or the improper probability that leads to the contact pin to damage of inserting mode, the test cost is reduced, simultaneously, the condition of not pulling out the control card can not appear when using, so that the test can be performed more smoothly.

Drawings

In order to more clearly illustrate the technical solution of the present invention using the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a prior art structure;

fig. 2 is a schematic structural diagram of a change-over switch of the testing tool provided by the present invention;

fig. 3 is a schematic view of the self-locking switch structure provided by the present invention;

fig. 4 is a schematic structural view of a second embodiment of the pushing mechanism provided by the present invention;

fig. 5 is a schematic view of the internal structure of the sleeve provided by the present invention;

fig. 6 is a schematic structural view of a second wedge-shaped strip and a third wedge-shaped strip provided by the present invention;

reference numerals: 1-base, 2-first card slot, 3-second card slot, 4-first push bar, 5-second push bar, 6-test control card A, 7-test card control B, 8-clamping seat, 9-first spring, 10-second spring, 11-pressing button, 12-third spring, 13-fifth spring, 14-fixed rod, 15-sleeve, 16-driving rod, 17-clamping piece, 18-connecting rod, 19-push rod, 20-fourth spring, 21-second wedge bar, 22-third wedge bar and 23-first wedge bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "in communication" are to be interpreted broadly, e.g., as either fixed or removable communication, or integrally connected; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 2 and fig. 3, the present embodiment provides a switch of a test fixture, including a base 1, wherein the base 1 is provided with a first card slot 2 and a second card slot 3, and the first card slot 2 and the second card slot 3 both have a certain depth, so that a test control card cannot fall off from the first card slot 2 and the second card slot 3; the first clamping groove 2 is connected with a first push bar 4 penetrating through the first clamping groove 2, two sides of the first clamping groove 2 are provided with first sliding grooves for the first push bar 4 to slide, the second clamping groove 3 is connected with a second push bar 5 penetrating through the second clamping groove 3, two sides of the second clamping groove 3 are provided with second sliding grooves for the second push bar 5 to slide, the bottom ends of the first push bar 4 and the second push bar 5 which are close to each other are connected and can be fixed through pins and the like, the first push bar 4 and the second push bar 5 can be connected through a connecting piece with a fan-shaped cross section, one side of the connecting piece opposite to the arc surface is limited on the base 1, so that the connecting piece can only rotate and the joint of the connecting piece and the base 1 can not slide, the angle between the first push bar 4 and the second push bar 5 is larger than 90 degrees, a push mechanism for driving the first push bar 4 and the second push bar 5 to rotate towards opposite directions is arranged between the first push bar 4 and the second push bar 5, the first push strip 4 and the second push strip 5 are driven by the push mechanism to rotate upwards and downwards, the end parts of the first push strip 4 and the second push strip 5 are not always positioned on the same horizontal plane due to the existence of the push mechanism, and because the contact pins for connecting the test control card are only arranged at the middle part, the two sides of the bottom of the test control card are not provided with the contact pins, the first push strip 4 and the second push strip 5 are in contact with the two sides of the test control card, the test control card cannot be damaged, and the first sliding groove and the second sliding groove are provided with two parts, so that the positions of the first push strip 4 and the second push strip 5 can be well limited, namely, the first push strip 4 and the second push strip 5 can only move in the vertical direction, and the safety of the test control card is further ensured; in order to improve the stability of the push bar, the clamping seat 8 can be sleeved at the lower ends of the first clamping groove 2 and the second clamping groove 3, and one side of the push rod 19 leans against the clamping seat 8 when the push rod is lowered to the lowest position, so that excessive pressure on a contact pin of the test control card is avoided; in addition, the pushing mechanism may adopt the following structure: the pushing mechanism comprises a self-locking switch arranged between a first pushing bar 4 and a second pushing bar 5, and a first spring 9 and a second spring 10 arranged between a first clamping groove 2 and a second clamping groove 3, wherein two ends of the first spring 9 are respectively and fixedly connected with the first pushing bar 4 and the base 1, two ends of the second spring 10 are respectively and fixedly connected with the second pushing bar 5 and the base 1, the self-locking switch comprises a pressing button 11 and a third spring 12, the pressing button 11 is arranged in an arc shape, one end of the third spring 12 is fixedly connected with the connection part of the first pushing bar 4 and the second pushing bar 5, the third spring can be fixed on the arc-shaped surface of the connecting piece, and the other end of the third spring 12 is in sliding connection with the pressing button 11; insert test control card A6 and test control card B respectively in first draw-in groove 2 and second draw-in groove 3, when needing to switch test control card, stir self-locking switch, will compress self-locking switch's third spring 12, because self-locking switch's button 11 that presses is the arc, so the third spring 12 of compressed can slide to the other end of pressing button 11, because self-locking switch's inside spring is together fixed with pushing away the strip, so push away the strip and also can be promoted, thereby make test control card switch.

Referring to fig. 4, 5 and 6, as a second embodiment of the pushing mechanism, the pushing mechanism includes a fixing rod 14 having two ends respectively fixedly connected to the first engaging groove 2 and the second engaging groove 3, and a cylindrical sleeve 15 fixedly connected to the fixing rod 14, a driving rod 16, a locking member 17, a connecting rod 18 and a pushing rod 19 are sequentially disposed in the sleeve 15 from top to bottom, the driving rod 16 extends out of the sleeve 15, a plurality of locking teeth are uniformly distributed at a lower end of the driving rod 16, a plurality of first wedge-shaped strips 23 matched with the locking teeth are disposed on the locking member 17, a second wedge-shaped strip 21 and a third wedge-shaped strip 22 matched with the first wedge-shaped strip 23 are disposed in the sleeve 15, the second wedge-shaped strip 21 is higher than the third wedge-shaped strip 22, the diameter of the connecting rod 18 is larger than the diameter of the pushing rod 19, a fourth spring 20 is disposed outside the pushing rod 19, an opening for the pushing rod 19 to extend out is disposed at the bottom of the sleeve 15, the opening diameter is smaller than the width of the fourth spring 20; the second push bar 5 is connected with a fifth spring 13, the other end of the fifth spring 13 is fixedly connected with the base 1, the pushing mechanism is positioned above the second push bar 5, namely when the push rod 19 does not extend out of the sleeve 15, the second push rod 19 is at a higher position under the pushing of the fifth spring 13, the test control card B at the side is in a connection state of separation, the test control card A6 is in a connection state, when the test control card needs to be replaced, the driving rod 16 is pressed, the clamping piece 17 drives the connecting rod 18 and the push rod 19 to move downwards, the fourth spring 20 is compressed, the clamping piece 17 automatically rotates at the same time, the inclined surface of the first wedge bar 23 rotates to the position of a third wedge bar 22, the third wedge bar 22 blocks the first wedge bar 23 so that the clamping piece 17 cannot rise, and the push rod 19 extends out of the sleeve 15 at the moment and presses the second push rod 19 to enable the end part of the second push rod 19 to rotate downwards, so that the test control B moves downwards for connection, the first push bar 4 is driven by the second push bar 5 to rotate upwards, so that the test control card A6 is disconnected; when the switching is needed again, the driving rod 16 is pressed again, the clamping piece 17 moves downwards and automatically rotates, so that the first wedge-shaped strip 23 rotates to the position of the second wedge-shaped strip 21, the clamping piece 17 drives the push rod 19 to move upwards under the action of the restoring force of the fourth spring 20 to separate from the second push rod 19, the second push rod 19 is driven by the fifth spring 13 to rotate upwards, the test control card B is pushed to be disconnected, and the first push strip 4 is driven by the second push strip 5 to rotate downwards, so that the test control card A6 moves downwards to be connected; wherein in order to increase fourth spring 20's fixed effect, can be with fourth spring 20 upper end and connecting rod 18 bottom fixed connection, fourth spring 20 lower extreme and sleeve 15 fixed connection, and can also set up actuating lever 16 into promotion section and joint section, the diameter that makes the joint section is greater than the diameter that promotes the section, sleeve 15 top supplies to promote the opening diameter that the section stretches out and promote section diameter looks adaptation, it can freely pass through the opening promptly to promote the section, and the joint section then can't leave sleeve 15 through the opening, thereby avoid actuating lever 16 to break away from sleeve 15 in the use.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A change-over switch of a test tool is characterized by comprising a base (1), wherein a first clamping groove (2) and a second clamping groove (3) are arranged on the base (1), the first clamping groove (2) is connected with a first push bar (4) which penetrates through the first clamping groove (2), two sides of the first clamping groove (2) are provided with first sliding grooves for the first push bar (4) to slide, the second clamping groove (3) is connected with a second push bar (5) which penetrates through the second clamping groove (3), two sides of the second clamping groove (3) are provided with second sliding grooves for the second pushing strips (5) to slide, the bottom ends of the first push bar (4) and the second push bar (5) which are close to each other are connected, the angle between the first push bar (4) and the second push bar (5) is larger than 90 degrees, and a pushing mechanism for driving the first pushing strip (4) and the second pushing strip (5) to rotate towards opposite directions is arranged between the first pushing strip (4) and the second pushing strip (5).

2. The diverter switch of test tooling according to claim 1, wherein the pushing mechanism comprises a self-locking switch arranged between the first push bar (4) and the second push bar (5), a first spring (9) and a second spring (10) arranged between the first slot (2) and the second slot (3), two ends of the first spring (9) are respectively fixedly connected with the first push bar (4) and the base (1), two ends of the second spring (10) are respectively fixedly connected with the second push bar (5) and the base (1), the self-locking switch comprises a press button (11) and a third spring (12), the press button (11) is arc-shaped, one end of the third spring (12) is fixedly connected with the joint of the first push bar (4) and the second push bar (5), the other end of the third spring (12) is connected with the press button (11) in a sliding way.

3. The change-over switch of the test tool according to claim 1, wherein the pushing mechanism comprises a fixing rod (14) with two ends respectively fixedly connected with the first clamping groove (2) and the second clamping groove (3), and a cylindrical sleeve (15) fixedly connected with the fixing rod (14), a driving rod (16), a clamping piece (17), a connecting rod (18) and a push rod (19) which are slidably connected with the sleeve (15) are sequentially arranged in the sleeve (15) from top to bottom, the upper end of the driving rod (16) extends out of the sleeve (15), a plurality of clamping teeth are uniformly distributed at the lower end of the driving rod (16), a plurality of first wedge-shaped strips (23) matched with the clamping teeth are arranged on the clamping piece (17), a second wedge-shaped strip (21) and a third wedge-shaped strip (22) matched with the first wedge-shaped strips (23) are arranged in the sleeve (15), and the second wedge-shaped strip (21) is higher than the third wedge-shaped strip (22), the diameter of the connecting rod (18) is larger than that of the push rod (19), a fourth spring (20) is sleeved outside the push rod (19), an opening for the push rod (19) to extend out is formed in the bottom of the sleeve (15), and the diameter of the opening is smaller than the width of the fourth spring (20); the second pushes away strip (5) and is connected with fifth spring (13), fifth spring (13) other end and base (1) fixed connection, pushing mechanism is located the second and pushes away strip (5) top.

4. The change-over switch of the test tool according to claim 3, wherein the upper end of the fourth spring (20) is fixedly connected with the bottom of the connecting rod (18), and the lower end of the fourth spring (20) is fixedly connected with the sleeve (15).

5. The change-over switch of the test tool according to claim 4, wherein the driving rod (16) is provided with a pushing section and a clamping section, the diameter of the clamping section is larger than that of the pushing section, and the diameter of an opening at the top of the sleeve (15) for the pushing section to extend out is matched with that of the pushing section.

6. The change-over switch of the test tool according to claim 3, wherein the lower ends of the first clamping groove (2) and the second clamping groove (3) are sleeved with clamping seats (8), and one side of the push rod (19) is leaned against the clamping seat (8) when the push rod descends to the lowest position.