CN218382956U

CN218382956U - Test fixture

Info

Publication number: CN218382956U
Application number: CN202222767722.2U
Authority: CN
Inventors: 赵红伟
Original assignee: Shijiazhuang New Sanjia Technology Co ltd
Current assignee: Shijiazhuang New Sanjia Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-01-24
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a test fixture, which comprises a test base, a supporting arm arranged on the surface of the test base, a lifting test module connected with the supporting arm in a sliding way, and a lifting driver used for driving the lifting test module to move along the supporting arm, wherein the lifting test module comprises a shell, a plurality of test contacts and a lead electrically connected with the test contacts, one surface of the shell facing the test base is provided with a plurality of positioning grooves, and each test contact is embedded in each positioning groove in a one-to-one correspondence manner; an elastic telescopic structure connected with the test contact is arranged in the positioning groove; and the test base is provided with a positioning die for fixing a product to be tested.

Description

Test fixture

Technical Field

The utility model relates to a test fixture technical field especially relates to a test fixture.

Background

At present, in the production of electronic products, a detection link is required to be performed, performance detection or function test is performed on finished products, whether the products can be powered on normally, work and run and the like are checked, and the products are ensured to be qualified and then enter a delivery link such as packaging and the like.

A traditional workshop usually adopts manual testing, and a tester passes through testing instruments such as a universal meter and the like to test whether a product is qualified. Because of low efficiency and insufficient accuracy of manual detection, various test fixtures appear in the industry at present for assisting detection personnel in detecting products and automatically judging whether the products are qualified or not by a system.

Because the contact on the testing tool usually moves along with the lifting driver, when contacting the product contact, the contact on the product is easily impacted quickly, scratches are generated, even the product contact is deformed, and the product sale is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a test fixture, which solves the problems.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a test fixture comprises a test base, a supporting arm arranged on the surface of the test base, a lifting test module connected with the supporting arm in a sliding manner, and a lifting driver used for driving the lifting test module to move along the supporting arm, wherein the lifting test module comprises a shell, a plurality of test contacts and a lead electrically connected with the test contacts, a plurality of positioning grooves are formed in one surface of the shell, which faces the test base, and the test contacts are embedded in the positioning grooves in a one-to-one correspondence manner;

an elastic telescopic structure connected with the test contact is arranged in the positioning groove;

and a positioning die for fixing a product to be tested is arranged on the test base.

Furthermore, the elastic telescopic structure comprises a buffer spring and a conductive slip ring, the conductive slip ring is sleeved on the test contact and is electrically connected with the test contact, and the lead is electrically connected with the conductive slip ring;

the buffer spring is positioned in the telescopic groove, and two ends of the buffer spring are respectively abutted against the bottom of the telescopic groove and the end face of the test contact.

Furthermore, one end of the shell, which faces the buffer spring, is provided with a limiting frame for fixing the conductive slip ring, and a sliding section is arranged between the two end faces of the test contact and is abutted against the conductive slip ring.

Furthermore, a limiting groove for fixing the positioning die is arranged on the test base, an abutting bolt is arranged on one side of the limiting groove, and the end part of the abutting bolt can abut against the positioning die;

and the end part of the abutting bolt is provided with a buffer rubber pad.

Furthermore, the shell comprises a bottom shell and an upper cover, each testing contact is provided with an anti-falling ring for preventing the testing contact from falling, and the anti-falling ring is fixedly connected with the testing contact and is abutted to one surface of the upper cover facing the bottom cover.

Further, the lifting driver comprises a linear motor and a guide rail, and the shell is fixedly connected with the linear motor.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model can reduce the impact force to the product contact during the test and reduce the damage to the product contact through the test contact with the elastic buffer effect;

meanwhile, the contact is collided with the contacts with different horizontal heights in the compression stroke range;

the contact is convenient to disassemble and assemble, and the use is flexible.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

fig. 2 is a partial cross-sectional view of a test contact in this embodiment;

fig. 3 is a schematic view of the abutment bolt in the present embodiment.

In the figure: 1. testing the base; 11. a limiting groove; 12. an abutment bolt; 13. a cushion rubber pad; 2. a support arm; 3. a lifting test module; 41. a linear motor; 42. a guide rail; 51. an upper cover; 52. a bottom case; 521. positioning a groove; 53. testing the contact; 531. a sliding section; 533. an anti-falling ring; 54. a conductive slip ring; 55. a buffer spring; 56. a wire; 6. positioning a mold; 7. a limiting frame.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a test fixture mainly includes a test base 1, a support arm 2 disposed on a surface of the test base 1, a lift test module 3 slidably connected to the support arm 2, and a lift driver for driving the lift test module 3 to move along the support arm 2. The lifting driver in the embodiment adopts the matching of the linear motor 41 and the guide rail 42, and the guide rail 42 is directly connected with the shell of the linear motor 41 in a sliding manner, so that the stability during lifting is ensured. The lifting driver can also adopt screw rod transmission, air cylinders and the like, and the embodiment is not described again.

The lifting test module 3 is used as a main component and comprises a shell, a plurality of test contacts 53 and wires 56 electrically connected with the test contacts 53, the shell is fixedly connected with the linear motor 41, and the wires 56 can converge the wires 56 connected with the test contacts 53 into a standard joint in an integrated mode and are inserted into a control system (such as a PC, a single chip microcomputer and the like) for detection. In order to fix the test contacts 53, in this embodiment, a plurality of positioning slots 521 are disposed on a surface of the housing facing the test base 1, the test contacts 53 can be embedded in the positioning slots 521 in a one-to-one correspondence manner, and then elastic retractable structures connected with the corresponding test contacts 53 are disposed in the positioning slots 521, so as to compress and buffer the test contacts 53 when contacting the product contacts.

The housing in this embodiment includes a bottom case 52 and an upper cover 51, the positioning slot 521 is located on the bottom case 52, the elastic telescopic structure includes a buffer spring 55 and a conductive slip ring 54, the conductive slip ring 54 is sleeved on the test contact 53 and electrically connected to the test contact 53, and the wire 56 is electrically connected to the conductive slip ring 54. When the test contact 53 moves, the test contact is constantly in a conducting state with the lead 56, and the stability of the joint of the lead 56 can be ensured without being influenced by the movement of the test contact 53.

Each test contact 53 is provided with an anti-falling ring 533 for preventing the test contact from falling off, and the anti-falling ring 533 is fixedly connected with the test contact 53 and abuts against one surface of the upper cover 51 facing the bottom cover, so that the use safety is ensured. Wherein, buffer spring 55 is located the telescopic slot, and buffer spring 55's both ends butt telescopic slot bottom and test contact 53's terminal surface respectively are equipped with the sleeve in constant head tank 521, set up the guide arm on the test contact 53, and the guide arm is pegged graft with the sleeve, guarantees the stability of spring, also prevents that test contact 53 from taking place the swing.

In order to facilitate assembly, and to detach and replace the test contact 53 and the conductive slip ring 54, in this embodiment, a limiting frame 7 for fixing the conductive slip ring is disposed at one end of the test contact 53 facing the buffer spring 55, so as to reduce assembly difficulty, and then a sliding section 531 is disposed between two end surfaces of the test contact 53, so as to abut against the sliding section 531 and the conductive slip ring, so that the conductive slip ring 54 is always fixed. The limiting frame 7 is fixed to the bottom case 52, and has a two-layer structure for clamping and fixing the conductive sliding ring 54, or fixing the conductive sliding ring 54 by means of a bracket and a cap, which is not described in detail in this embodiment.

In addition, this embodiment sets up the positioning die 6 that is used for fixed product that awaits measuring on test base 1, improves the detection efficiency who improves the product, and measurement personnel need not to spend the test position of time adjustment product that awaits measuring, improves detection efficiency greatly. Set up the spacing groove 11 that is used for fixed position mould 6 simultaneously on test base 1, be equipped with butt bolt 12 in one side of spacing groove 11, fix positioning mould 6 through the tip of butt bolt 12, improve positioning mould 6's steadiness on the one hand, be convenient for on the one hand change the positioning mould 6 that different products correspond, test, improve the commonality of this embodiment.

In order to avoid damaging the positioning mold 6, a cushion rubber pad 13 is provided on the end of the abutting bolt 12 in this embodiment, (the limiting groove 11 should be slightly larger than the positioning mold 6 to leave a space).

In the use process of the embodiment, the product to be tested is sleeved on the positioning die 6, then the lifting test module 3 is controlled to descend through the control system, the test contact 53 is abutted to the contact of the product to be tested, then the system judges whether the product to be tested is qualified, and the lifting test module 3 resets after the test is completed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a test fixture, includes test base (1), locates support arm (2) on test base (1) surface, slides lift test module (3) of being connected with support arm (2) and is used for driving lift test module (3) along the lift driver of support arm (2) motion, its characterized in that: the lifting test module (3) comprises a shell, a plurality of test contacts (53) and a lead (56) electrically connected with the test contacts (53), wherein a plurality of positioning grooves (521) are formed in one surface of the shell, which faces the test base (1), and the test contacts (53) are embedded in the positioning grooves (521) in a one-to-one correspondence manner;

an elastic telescopic structure connected with the test contact (53) is arranged in the positioning groove (521);

and the test base (1) is provided with a positioning die (6) for fixing a product to be tested.

2. A test fixture as recited in claim 1, wherein: the elastic telescopic structure comprises a buffer spring (55) and a conductive slip ring (54), the conductive slip ring (54) is sleeved on the test contact (53) and is electrically connected with the test contact (53), and the lead (56) is electrically connected with the conductive slip ring (54);

the buffer spring (55) is positioned in the telescopic groove, and two ends of the buffer spring (55) are respectively abutted against the bottom of the telescopic groove and the end face of the test contact (53).

3. A test fixture as recited in claim 2, wherein: and a limiting frame (7) used for fixing the conductive sliding ring (54) is arranged at one end, facing the buffer spring (55), in the shell, a sliding section (531) is arranged between the two end faces of the test contact (53), and the sliding section (531) is abutted against the conductive sliding ring (54).

4. A test fixture as claimed in claim 1, 2 or 3, wherein: a limiting groove (11) for fixing the positioning die (6) is formed in the test base (1), an abutting bolt (12) is arranged on one side of the limiting groove (11), and the end portion of the abutting bolt (12) can abut against the positioning die (6);

and a buffer rubber pad (13) is arranged on the end part of the abutting bolt (12).

5. A test fixture according to claim 3, wherein: the shell comprises a bottom shell (52) and an upper cover (51), each testing contact (53) is provided with an anti-falling ring (533) used for preventing the testing contact from falling, and the anti-falling rings (533) are fixedly connected with the testing contacts (53) and abut against one surface, facing the bottom cover, of the upper cover (51).

6. A test fixture according to claim 1, 2 or 3, wherein: the lifting driver comprises a linear motor (41) and a guide rail (42), and the shell is fixedly connected with the linear motor (41).