CN108132366B

CN108132366B - Test fixture

Info

Publication number: CN108132366B
Application number: CN201810134346.9A
Authority: CN
Inventors: 郑建生
Original assignee: Kunshan Wisdom Electronics Co ltd
Current assignee: Kunshan Wisdom Electronics Co ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2024-07-02
Anticipated expiration: 2038-02-09
Also published as: CN108132366A

Abstract

The invention relates to the technical field of wiring terminal testing, and particularly discloses a testing fixture which comprises a supporting seat, a mounting frame, a plurality of testing needles and an elastic piece, wherein one end of the supporting seat is used for being abutted against a product to be tested; the mounting frame can slide along the direction of the supporting seat towards the product to be tested or away from the product to be tested, and is arranged at one end of the supporting seat away from the product to be tested; one end of each of the plurality of test pins is connected to one end of the mounting frame, which is close to the product to be tested, and the other end of each of the plurality of test pins is used for being inserted into the product to be tested; one end of the elastic piece is connected to the supporting seat, the other end of the elastic piece is connected to the mounting frame, and the mounting frame can be driven to be far away from a product to be tested, so that the test needle is separated from the product to be tested. After the product to be tested is tested, only the external force is needed to be removed, the elastic piece drives the mounting frame to move upwards, the test needle is pulled out of the product to be tested at the same time, the product to be tested is not damaged or the test needle is damaged, and the test fixture is simple in structure, low in manufacturing cost and high in test efficiency.

Description

Test fixture

Technical Field

The invention relates to the technical field of wiring terminal testing, in particular to a testing clamp.

Background

Along with the increasing degree of industrial automation and the increasing strict and accurate industrial control requirements, the consumption of the wiring terminals is gradually increased, and the requirements on the accuracy and the detection efficiency of the quality detection of the wiring terminals before delivery are also higher.

The test fixture of the wiring terminal in the prior art comprises a test needle frame provided with a test needle, a bearing table for bearing products to be tested and a driving mechanism for driving the test needle frame to move up and down. After the test is finished, the driving mechanism drives the test needle frame to move upwards, so that the test needle is separated from the test terminal of the product to be tested on the bearing table.

The defect of the prior art is that a driving mechanism is required to drive the test needle frame to move upwards, and the equipment cost is high.

Disclosure of Invention

The invention aims to provide a test fixture, so that the test fixture can be separated from a product to be tested after the test is finished without a driving mechanism, and the manufacturing cost of the test fixture is reduced.

To achieve the purpose, the invention adopts the following technical scheme:

A test fixture, comprising:

One end of the supporting seat is used for being abutted against a product to be tested;

The mounting rack can slide along the direction of the supporting seat towards or away from the product to be tested and is arranged at one end of the supporting seat away from the product to be tested; and

One end of each test needle is connected to one end of the mounting frame, which is close to the product to be tested, and the other end of each test needle is used for being inserted into the product to be tested;

The test device comprises a support seat, a mounting rack, a test needle, an elastic piece, a mounting rack and a test needle, wherein the support seat is arranged on the support seat, the mounting rack is arranged on the test needle, the test needle is arranged on the support seat, the elastic piece is arranged on the support seat, one end of the elastic piece is connected with the support seat, and the other end of the elastic piece is connected with the mounting rack, and the mounting rack can be driven to be far away from the product to be tested, so that the test needle is separated from the product to be tested.

Preferably, the device further comprises a clamping assembly arranged on the mounting frame, and the clamping assembly is detachably connected to the supporting seat.

When the test needle is inserted into the product to be tested, the clamping assembly is connected to the supporting seat to prevent the test needle from separating from the product to be tested; when the product to be tested is tested, the clamping assembly is separated from the supporting seat, the mounting frame slides upwards under the action of the elastic piece, and the test needle is separated from the product to be tested.

Preferably, the supporting seat is provided with a clamping interface;

The clamping assembly comprises a fixed block fixed on the mounting frame and a clamping hook rotatably connected to the fixed block, and the clamping hook can be clamped to the clamping interface.

Preferably, the test needle vertically penetrates through the supporting seat, and can slide up and down relative to the supporting seat.

After the product to be tested is tested, the mounting frame slides upwards, the length of the test needle exposed on one side of the lower end face of the supporting seat is shortened, and the test needle can be prevented from being bent and damaged.

Preferably, the supporting seat comprises a bottom plate arranged at one end of the mounting frame connected with the test needle, and a side plate connected with the bottom plate and positioned at one side of the mounting frame connected with the clamping assembly;

the test needle penetrates through the bottom plate and can slide relative to the bottom plate; the mounting frame is in sliding connection with the side plates. The supporting seat adopts this kind of form setting, and the bottom plate can protect the test needle, and the curb plate can realize with the upper and lower slip of mounting bracket.

Preferably, at least two sliding rails are arranged on the mounting frame at intervals along the vertical direction, and sliding grooves are formed in positions, corresponding to the sliding rails, on the side plates. At least two sliding rails and sliding grooves are arranged at intervals, so that the supporting seat and the mounting frame cannot be inclined when sliding mutually, and a plurality of test needles (2) are simultaneously inserted into or ejected out of a product to be tested.

Preferably, the elastic member is a plurality of springs arranged at intervals, one end of each spring is connected with the mounting frame, and the other end of each spring is connected with the bottom plate. The sliding plate and the mounting frame can be uniformly stressed by arranging a plurality of springs.

Preferably, the mounting frame is provided with a circuit board, the test needle is electrically connected with the circuit board, and the circuit board is provided with a connecting wire connected with the test instrument. And the information tested by the test needle is transmitted to the test instrument through the circuit board, and finally the test result is displayed.

Preferably, the mounting frame is provided with a pressing handle, the pressing handle is provided with a wire passing hole formed by buckling two through grooves, and the connecting wire penetrates through and is clamped in the wire passing hole.

The wire passing hole plays a fixed role on the connecting wire, so that the line is prevented from being damaged in the moving process of the test fixture, the wire passing hole is formed by buckling two through grooves, and if the line is in a problem, the two clamping grooves can be separated, so that the wire is convenient to maintain or pass through.

Preferably, the surface of the test needle is gold-plated, and the test needle is provided with a protrusion, and the protrusion can be clamped into a product to be tested.

The test needle is plated with gold so as to improve the conductivity of the test needle, and when the test needle tests a product to be tested, the bulge is clamped into the product to be tested, so that the adhesive force between the test needle and the product and the stability of the test can be improved.

The invention has the beneficial effects that:

Before a product to be tested is tested, one end, far away from the mounting frame, of the supporting seat is abutted to the product to be tested, the mounting frame uniformly slides downwards under the action of external force, and a plurality of test needles are simultaneously inserted into the product to be tested; after the test is finished, only the external force is required to be removed, the elastic piece drives the mounting frame to move upwards, the test needles are pulled out of the product to be tested, the movement speeds of the test needles are consistent, the product to be tested can be inserted into or separated from the test needles at the same time, and the tested product is not damaged or the test needles are damaged. The test fixture has the advantages of simple structure, low manufacturing cost and high test efficiency.

Drawings

FIG. 1 is a perspective view of a test fixture according to the present invention at a first perspective;

FIG. 2 is a perspective view of a second view of the test fixture of the present invention;

FIG. 3 is a perspective view of the test fixture of the present invention when not tested;

FIG. 4 is a schematic diagram of the structure of the test fixture of the present invention after the test pins are inserted into the product to be tested;

FIG. 5 is a perspective view of a third view of the test fixture of the present invention;

FIG. 6 is a schematic view of the structure of the test needle of the present invention.

In the figure:

1. a mounting frame; 11. a slide rail; 12. a first mounting plate; 13. a second mounting plate;

2. a test needle; 21. a protrusion;

3. A support base; 31. a first base plate; 32. a second base plate; 33. a third base plate; 34. a side plate; 341. a card interface;

4. a spring; 5. a clamping assembly; 51. a fixed block; 52. a hook;

6. Pressing the handle; 61. a fixing part; 611. a first through groove; 62. a rotating part; 621. a second through slot; 63. a bolt;

7. A circuit board; 8. and (5) testing a product.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

The preferred embodiment provides a test fixture which is mainly but not limited to be applied to performance test of a wiring terminal, so that the test fixture can be separated from a product to be tested after the test is completed without a driving mechanism, and the manufacturing cost of the test fixture is reduced.

As shown in fig. 1 and 2, the test fixture provided in this embodiment includes a mounting frame 1, a plurality of test pins 2, a support base 3, and an elastic member. One end of the supporting seat 3 is used for being abutted against a product 8 to be tested; the mounting frame 1 can slide along the supporting seat 3 towards the direction close to or far away from the product 8 to be detected under the action of external force, and the mounting frame 1 is arranged at one end of the supporting seat 3 far away from the product 8 to be detected. One end of the test needle 2 is connected to one end of the mounting frame 1, which is close to the product 8 to be tested, and the other end is used for being inserted into the product 8 to be tested; one end of the elastic piece is connected to the supporting seat 3, and the other end of the elastic piece is connected to the mounting frame 1, and can drive the mounting frame 1 to be far away from the product to be tested, so that the test needle 2 is separated from the product to be tested 8.

When the test fixture in this embodiment is used to test the product 8 to be tested, firstly, one end of the supporting seat 3 is abutted to the product 8 to be tested, the mounting frame1 is pressed downwards, the mounting frame1 drives the test needle 2 to move downwards and is inserted into the product 8 to be tested, and at this time, the elastic piece is in a compressed state. After the test is finished, the external force is removed, the elastic piece has a restoring force which is in a restoring state, the restoring force drives the mounting frame1 to move upwards, and the test needle 2 is driven to be separated from the product 8 to be tested, so that the test is finished.

Before testing a product to be tested in the embodiment, one end, away from the mounting frame 1, of the supporting seat 3 is abutted to the product to be tested 8, the mounting frame 1 uniformly slides downwards under the action of external force, and a plurality of test needles 2 are simultaneously inserted into the product to be tested 8; after the test is finished, only the external force is required to be removed, the elastic piece drives the mounting frame 1 to move upwards, the test needle 2 is pulled out of the product 8 to be tested, the movement speeds of the test needles 2 are consistent, the product 8 to be tested can be inserted or separated at the same time, and the product 8 to be tested cannot be damaged or the test needle 2 itself cannot be damaged. The test fixture of the embodiment has the advantages of simple structure, low manufacturing cost and high test efficiency.

In this embodiment, the plurality of test pins 2 are arranged in a row, and two rows of test pins 2 are provided, and the number of test pins 2 in each row may be set according to the model of the product 8 to be tested, or more than two rows of test pins 2 may be set as required, or only one row of test pins 2 may be set.

As shown in fig. 2, in this embodiment, the mounting frame 1 includes a first mounting plate 12 and a second mounting plate 13 that are detachably connected and oppositely disposed, a circuit board 7 and test pins 2 are sandwiched between the first mounting plate 12 and the second mounting plate 13, and two rows of test pins 2 are respectively disposed on two opposite sides of the circuit board 7, that is, the circuit board 7 is disposed between the two rows of test pins 2. The test needle 2 is electrically connected with the circuit board 7, and the circuit board 7 is provided with a connecting wire connected with a test instrument. The signal tested by the test needle 2 is transmitted to the test instrument through the circuit board 7, and finally the test result is displayed.

As shown in fig. 1 and 3, the upper end of the mounting frame 1 is provided with a pressing handle 6, the pressing handle 6 is provided with a wire passing hole formed by buckling two through grooves, the two through grooves are a first through groove 611 and a second through groove 621, and the connecting wire penetrates through and is clamped in the wire passing hole. The pressing handle 6 includes a fixing portion 61 provided with a first through groove 611 and a rotating portion 62 provided with a second through groove 621, the fixing portion 61 is connected to the upper end of the mounting frame 1, the rotating portion 62 is connected to the fixing portion 61 and is rotatable around one end of the fixing portion 61, and the second through groove 621 is made to be close to or far from the first through groove 611 by rotating the rotating portion 62; the other end of the fixed portion 61 is connected to the rotating portion 62 by a bolt 63.

When fixing the connecting wire, the bolt 63 is rotated out of the fixing portion 61 and the rotating portion 62, the rotating portion 62 is rotated to enable the second through groove 621 to be far away from the first through groove 611, the connecting wire is arranged in the first through groove 611 in a penetrating mode, the rotating portion 62 is rotated to enable the second through groove 621 to be buckled with the first through groove 611, the connecting wire is clamped into the wire through hole, the bolt 63 is screwed into the fixing portion 61 and the rotating portion 62, and the connecting wire is mounted and fixed.

The line hole plays a fixed role to the connecting line, avoids being destroyed at the test fixture moving in-process circuit, and the line hole is formed by two logical groove locks, if the circuit goes wrong, can separate two logical grooves, conveniently maintains or dismouting connecting line to the connecting line.

As shown in fig. 3, the support base 3 includes a bottom plate at one end of the mounting frame 1 to which the test pins 2 are attached, and a side plate 34 attached to the bottom plate and attached to the side of the second mounting plate 13 remote from the first mounting plate 12; the side plate 34 is slidably connected with the second mounting plate 13, at least two sliding rails 11 are arranged on the second mounting plate 13 at intervals along the vertical direction, the number of the sliding rails in the embodiment is preferably two, and sliding grooves are arranged on the positions, corresponding to the sliding rails 11, of the side plate 34.

The sliding rails 11 arranged at two intervals are arranged in the embodiment, two corresponding sliding grooves are also arranged and respectively correspond to the corresponding sliding rails 11, when the mounting frame 1 slides along the supporting seat 3, the sliding rails 11 slide along the corresponding sliding grooves to play a guiding role, the supporting seat 3 and the mounting frame 1 can slide mutually without generating deflection, and then a plurality of test needles 2 are simultaneously inserted into or ejected out of the product 8 to be tested. The test needle 2 is vertical runs through supporting seat 3 setting, and supporting seat 3 can slide from top to bottom for the test needle 2, and specifically, the bottom plate is worn to locate by the test needle 2, and can slide for the bottom plate.

The bottom plate in this embodiment includes a first bottom plate 31, a second bottom plate 32 and a third bottom plate 33 sequentially connected along a direction close to the side plate 34, the upper end surfaces of the first bottom plate 31, the second bottom plate 32 and the third bottom plate 33 are on the same plane, the lower end surfaces are stepped and the heights of the lower end surfaces are sequentially reduced, a row of test pins 2 are respectively arranged at the intersection surface of the first bottom plate 31 and the second bottom plate 32 and the intersection surface of the second bottom plate 32 and the third bottom plate 33, and one end of the elastic member is connected to the third bottom plate 33. The arrangement of the first bottom plate 31, the second bottom plate 32 and the third bottom plate 33 is not limited thereto, and may be set according to the shape of the workpiece to be measured, as long as the bottom plates can be pressed against the product 8 to be measured, so that the mounting frame 1 is uniformly stressed, and the movement speeds of the points thereon are equal.

The support seat 3 can protect the test needle 2 on the one hand and can realize the up-and-down sliding relative to the mounting frame 1 on the other hand. After the product 8 to be tested is tested, the mounting frame 1 slides upwards, the length of the test needle 2 exposed on one side of the lower end face of the supporting seat 3 is shortened, and the test needle 2 can be prevented from being bent and damaged.

As shown in fig. 4, when the product 8 to be tested needs to be tested, the lower end face of the bottom plate is pressed against the product 8 to be tested, the pressing handle 6 is pressed downwards, the elastic element is compressed, the mounting frame 1 slides downwards relative to the supporting seat 3 until the lower end of the mounting frame 1 is pressed against the upper end face of the bottom plate, and at the moment, the test needle 2 is just inserted into the product 8 to be tested.

As shown in fig. 3 and 4, the test fixture of the present embodiment further includes a clamping assembly 5 disposed on the second mounting plate 13 and located at one side of the supporting seat 3, where the clamping assembly 5 is used for connecting the mounting frame 1 and the supporting seat 3 when the test needle 2 is inserted into the product 8 to be tested. The clamping assembly 5 comprises a fixed block 51 fixed on the mounting frame 1 and a clamping hook 52 rotatably connected with the fixed block 51. In this embodiment, the clamping assembly 5 further includes a fixing post, the fixing post is connected to the hook 52 in a penetrating manner, two ends of the fixing post are connected to the fixing block 51, and the hook 52 rotates with the fixing post as an axis.

The side plate 34 is provided with a clamping interface 341, the clamping hook 52 is rotated, one end of the clamping hook 52 can be far away from or close to the clamping interface 341, and when one end of the clamping hook 52 is close to the clamping interface 341 and the lower end of the mounting frame 1 is abutted to the upper end of the bottom plate, one end of the clamping hook 52 can be clamped in the clamping interface 341.

When the test needle 2 is inserted into the product 8 to be tested, the elastic piece is in a compressed state, the clamping hook 52 is clamped into the clamping interface 341, the mounting frame 1 is fixed on the supporting seat 3, the mounting frame 1 is prevented from being forced to move upwards, and the test needle 2 is ejected out; when the product 8 to be tested is tested, the hook 52 is rotated to separate the hook 52 from the clamping interface 341, the mounting frame 1 slides upwards relative to the supporting seat 3, and the test needle 2 is driven to move upwards, so that the test needle 2 is separated from the product 8 to be tested.

As shown in fig. 5, the elastic member in this embodiment is a plurality of springs 4 arranged at intervals, and may be other suitable elastic members. Specifically, five springs 4 are arranged at intervals, one end of each spring 4 is connected to the mounting frame 1, and the other end is connected to the upper end of the third bottom plate 34. The plurality of springs 4 can lead the stress of the supporting seat 3 and the mounting frame 1 to be uniform.

As shown in fig. 6, the test needle 2 is a copper needle, and the surface of the copper needle is gold-plated, so that the conductivity of the test needle 2 is improved, and the copper needle is provided with a protrusion 21, and the protrusion 21 can be clamped into the product 8 to be tested. When the copper needle tests the product 8 to be tested, the bulge 21 is clamped into the product 8 to be tested, so that the adhesive force between the copper needle and the product and the stability of the test can be improved.

The specific working process of the test fixture of the embodiment is as follows:

The lower end of the bottom plate is abutted to the product 8 to be tested, downward external force is applied to the pressing handle 6, the mounting frame 1 and the fixing seat 3 relatively slide, the mounting frame 1 moves downwards (in the direction close to the product 8 to be tested) until the lower end of the mounting frame 1 is abutted to the upper end of the bottom plate, and at the moment, the spring 4 is in a compressed state and the test needle 2 is just inserted into the product 8 to be tested. The clamping hook 52 is rotated towards the direction close to the clamping interface 341, so that the clamping hook 52 is clamped into the clamping interface 341, the mounting frame 1 is fixed on the supporting seat 3, and the test needle 2 can be stably and continuously inserted into a product to be tested until the test is completed.

After the test is finished, the external force for pressing the handle 6 is removed, the clamping hook 52 is rotated in the direction away from the clamping interface 341, the clamping hook 52 is separated from the clamping interface 341, the spring 4 has a restoring force which is in a restoring state, the restoring force drives the mounting frame 1 to move upwards (in the direction away from the product 8 to be tested), the test needle 2 is driven to separate from the product 8 to be tested, and the test fixture is taken away, so that the separation process of the test needle 2 and the product 8 to be tested is finished.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A test fixture for use in connection terminal testing, comprising:

one end of the supporting seat (3) is used for being abutted against a product (8) to be tested;

The mounting frame (1) can slide along the supporting seat (3) towards a direction approaching or separating from the product (8) to be tested, and is arranged at one end of the supporting seat (3) separating from the product (8) to be tested; and

One end of each test needle (2) is connected to one end of the mounting frame (1) close to the product (8) to be tested, and the other end of each test needle is used for being inserted into the product (8) to be tested;

The test device is characterized by further comprising an elastic piece, wherein one end of the elastic piece is connected with the supporting seat (3), and the other end of the elastic piece is connected with the mounting frame (1) and can drive the mounting frame (1) to be far away from the product to be tested so that the test needle (2) is separated from the product to be tested (8);

the device also comprises a clamping assembly (5) arranged on the mounting frame (1), and the clamping assembly (5) is detachably connected to the supporting seat (3);

The mounting frame (1) comprises a first mounting plate (12) and a second mounting plate (13) which are detachably connected and are oppositely arranged, and the test needle (2) is clamped between the first mounting plate (12) and the second mounting plate (13);

The supporting seat (3) comprises a bottom plate positioned at one end of the mounting frame (1) connected with the test needle (2), and a side plate (34) connected with the bottom plate and connected with one side of the second mounting plate (13) far away from the first mounting plate (12); the side plate (34) is in sliding connection with the second mounting plate (13);

The bottom plates comprise a first bottom plate (31), a second bottom plate (32) and a third bottom plate (33) which are sequentially connected along the direction close to the side plates (34), the upper end surfaces of the first bottom plate (31), the second bottom plate (32) and the third bottom plate (33) are on the same plane, and the lower end surfaces are stepped and the heights of the lower end surfaces are sequentially reduced; a row of test pins (2) are arranged on the intersecting surface of the first bottom plate (31) and the second bottom plate (32) and the intersecting surface of the second bottom plate (32) and the third bottom plate (33) in a penetrating mode, and one end of the elastic piece is connected to the third bottom plate (33).

2. The test fixture according to claim 1, characterized in that the support base (3) is provided with a card interface (341);

the clamping assembly (5) comprises a fixed block (51) fixed on the mounting frame (1) and a clamping hook (52) rotatably connected to the fixed block (51), and the clamping hook (52) can be clamped to the clamping interface (341).

3. Test fixture according to claim 2, characterized in that the test needle (2) is arranged vertically through the support seat (3) and can slide up and down relative to the support seat (3).

4. A test fixture according to claim 3, characterized in that the support base (3) comprises a bottom plate arranged at one end of the mounting frame (1) connected with the test needle (2), and a side plate (34) connected with the bottom plate and positioned at one side of the mounting frame (1) connected with the clamping assembly (5);

The test needle (2) is arranged on the bottom plate in a penetrating way and can slide relative to the bottom plate; the mounting frame (1) is in sliding connection with the side plate (34).

5. The test fixture according to claim 4, wherein at least two sliding rails (11) are arranged on the mounting frame (1) at intervals along the vertical direction, and sliding grooves are arranged on the side plates (34) at positions corresponding to the sliding rails (11).

6. Test fixture according to claim 4 or 5, characterized in that the elastic member is a plurality of springs (4) arranged at intervals, one end of the springs (4) being connected to the mounting frame (1) and the other end being connected to the bottom plate.

7. The test fixture according to claim 1, characterized in that a circuit board (7) is arranged on the mounting frame (1), the test needle (2) is electrically connected with the circuit board (7), and a connecting line connected with a test instrument is arranged on the circuit board (7).

8. The test fixture according to claim 7, wherein the mounting frame (1) is provided with a pressing handle (6), the pressing handle (6) is provided with a wire passing hole formed by buckling two through grooves, and the connecting wire penetrates through and is clamped in the wire passing hole.

9. Test fixture according to claim 1, characterized in that the surface of the test needle (2) is gold-plated, the test needle (2) is provided with a protrusion (21), which protrusion (21) can be snapped into the product (8) to be tested.