CN211148848U

CN211148848U - Circuit function test fixture for circuit board

Info

Publication number: CN211148848U
Application number: CN201921846881.3U
Authority: CN
Inventors: 黄琼
Original assignee: Changzhou Yubo Electronic Technology Co ltd
Current assignee: Changzhou Yubo Electronic Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-31
Anticipated expiration: 2029-10-30

Abstract

A circuit function test fixture for a circuit board comprises a platform, wherein the bottom of the platform is provided with a plurality of guide pillars which are arranged in a base in a relatively movable manner; a detection dial is arranged in the base, a plurality of detection needles are arranged on the detection dial, a circuit board to be detected is arranged above the platform, platform detection through holes are arranged on the platform below circuit contacts on the circuit board, and the heads of the detection needles are positioned in the platform detection through holes and aligned with the circuit contacts respectively; the platform is also provided with a pressing plate, and the pressing plate is connected and arranged in a pressing plate mounting hole arranged on the platform through a pressing plate screw; the pressing plate is provided with a cantilever blank holder, and the edge of the circuit board is tightly pressed between the cantilever blank holder and the platform; and an anti-impact compression spring is arranged between the upper surface of the pressure plate and the head of the pressure plate screw. The clamping convenience in the circuit board testing process can be improved, the operation height is reduced, the sitting posture use is facilitated, meanwhile, the material consumption is reduced, and the cost is saved.

Description

Circuit function test fixture for circuit board

Technical Field

The utility model relates to a circuit board circuit function test anchor clamps.

Background

In order to ensure the smooth operation of the circuit system of the finished circuit board, the circuit function is generally tested on an electrical testing device, and the circuit board is electrically tested by adopting a needle dial provided with specific contacts.

The test equipment commonly used in the existing workshop adopts a table type machine, a dial and a detection system are arranged in a base through devices such as signal acquisition, transmission, display and the like, and a plurality of detection needles arranged on the dial extend out of the surface of the dial. A detection platform is arranged above the dial, and a circuit board to be detected is arranged on the platform. In addition, the stand column is arranged at the rear of the base, the pressing plate capable of moving up and down is arranged on the stand column, and the pressing plate is pressed down through the handle, so that a circuit contact (or named golden finger) on the circuit board is in contact conduction with the detection pin, and the test is completed. Due to the adoption of the pressing type upright column structure, the whole height is higher, and in order to avoid crushing the circuit board, a plurality of rubber columns are required to be arranged on the pressure plate and contact the circuit board through the rubber columns, so that the height of the equipment is further increased. On one hand, the higher equipment size brings inconvenience in operation and lower test efficiency, and the streamlined test is difficult to adopt a sitting posture form. In addition, the higher upright post and the corresponding pressing mechanism have higher cost, and the base is also made to be thicker and heavier for balancing the center of gravity, so that the cost is further increased.

SUMMERY OF THE UTILITY MODEL

In view of above situation, in order to solve the problem that above-mentioned technique exists, the utility model provides a circuit board circuit function test fixture can improve the clamping convenience among the circuit board test process to reduce the operating height, the position of sitting of being convenient for uses, reduces the material simultaneously, practices thrift the cost.

The circuit function test fixture for the circuit board comprises a platform, wherein a plurality of guide pillars are arranged at the bottom of the platform and can be installed in a base in a relatively movable manner; a detection dial is arranged in the base, a plurality of detection needles are arranged on the detection dial, a circuit board to be detected is arranged above the platform, platform detection through holes are arranged on the platform below circuit contacts on the circuit board, and the heads of the detection needles are positioned in the platform detection through holes and aligned with the circuit contacts respectively; the platform is also provided with a pressing plate, and the pressing plate is connected and arranged in a pressing plate mounting hole arranged on the platform through a pressing plate screw; the pressing plate is provided with a cantilever blank holder, and the edge of the circuit board is tightly pressed between the cantilever blank holder and the platform; and an anti-impact compression spring is arranged between the upper surface of the pressure plate and the head of the pressure plate screw. Through setting up the clamp plate, can easily insert the circuit board between cantilever blank holder and the platform to fix the circuit board on the platform, directly push down or push down the platform through pushing down the mechanism, can make the contact of circuit board and the head contact of detection needle, thereby accomplish the test. Through setting up scour protection pressure spring, on the one hand can make the clamp plate compress tightly the circuit board on the platform, on the other hand, when the platform pushes down and makes the contact of circuit board and the head contact of detection needle, if the packing force is too big, can overcome scour protection pressure spring's elasticity jack-up clamp plate to prevent to damage the circuit board.

Preferably, the pressing plate comprises a first pressing plate and a second pressing plate, the first pressing plate is arranged on each of two sides of the circuit board, and the second pressing plate is arranged at the far end of the circuit board relative to the operation position.

Preferably, one end of the first pressing plate is provided with a first tilting part which is bent upwards along the width direction. By arranging the first tilting part, a large-angle inlet is formed between the cantilever blank pressing edge at the end where the first tilting part is located and the platform, so that the circuit board can be conveniently inserted from the inlet. The first tilting part is arranged on one side of the equipment operation position.

Preferably, the edge of the cantilever pressing edge of the second pressing plate is provided with a second tilting part which is bent upwards along the length direction. Through setting up second perk portion, make the cantilever blank holder of second clamp plate and form the entry of a great angle between the platform, be convenient for insert the circuit board from here.

Preferably, the pressure plate screw is in threaded connection with the platform, and the pressure plate screw is in clearance fit with the pressure plate.

Preferably, the platform detection through hole is a rectangular hole arranged on the platform, and all circuit contacts to be detected on the circuit board are located within the range of the rectangular hole. The structure shown in the attached drawing of the embodiment of the application is more suitable for monitoring the circuit board with the same size for a long time.

Preferably, the platform detection through hole is a plurality of circular holes arranged on the platform, and the contact points of the circuit to be detected on the circuit board are respectively located in the range of one of the circular holes. The installation position that more is fit for can adjusting the clamp plate is with the condition of the circuit board of installation unidimensional, according to the contact condition of different circuit boards punch on the platform can.

Preferably, a plurality of pressure plate mounting holes are formed in the platform. Therefore, the mounting position of the pressing plate can be adjusted to adapt to circuit boards of different sizes.

Preferably, the number of the guide columns is at least four, buffer springs are respectively arranged outside the four guide columns, and the buffer springs are located between the bottom of the platform and the upper surface of the base.

After the technology provided by the utility model, according to the utility model discloses circuit board circuit functional test anchor clamps have following beneficial effect: the whole height is lower, the operation height is reduced, and the sitting posture use is convenient; the circuit board is fixed by inserting, so that the clamping convenience in the test process of the circuit board is improved; meanwhile, large-size components such as a traditional stand column, a pressing mechanism depending on the stand column, a rubber column and the like are eliminated, materials are reduced, and cost is saved.

Drawings

FIG. 1 is a top view of a circuit board circuit function testing fixture according to an embodiment of the present disclosure;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a sectional view taken along line B-B of fig. 1.

Description of reference numerals:

platform 1

Platform detection through hole 10

Pressing plate mounting hole 12

Pressing plate 2

Cantilever blank holder 20

Clamp plate screw 201

Anti-impact hold-down spring 202

First presser plate 21

The first raised part 210

Second presser plate 22

Second raised portion 220

Pressing mechanism 3

Pressing base 30

Pressing down the rotating shaft 31

Pressing down the rotating sleeve 32

Push-down handle 33

Handle bar 331

Handle push-pull rod 332

Lower pinch roller 4

Pinch roller link 41

Pinch roller rotating sleeve 42

Pinch roller rotating shaft 43

Rubber buffer block 50

Buffer screw 51

Circuit board 8

Circuit contact 80

Detection needle 9

Base 90

Guide post 91

Buffer spring 92

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings. The described embodiments include various specific details to aid understanding, but they are to be construed as merely illustrative, and not restrictive of all embodiments of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Meanwhile, in order to make the description more clear and concise, a detailed description of functions and configurations well known in the art will be omitted.

As shown in fig. 1-3, a circuit function testing fixture for a circuit board comprises a platform 1, wherein a plurality of guide posts 91 are arranged at the bottom of the platform 1, and the guide posts 91 are relatively movably mounted in a base 90; the detection device is characterized in that a detection dial is arranged in the base 90, a plurality of detection needles 9 are arranged on the detection dial, a circuit board 8 to be detected is arranged above the platform 1, a platform detection through hole 10 is arranged on the platform 1 below a circuit contact 80 on the circuit board 8, and the heads of the detection needles 9 are positioned in the platform detection through hole 10 and aligned with the circuit contact 80 respectively.

The platform 1 is also provided with a pressing plate 2, and the pressing plate 2 is connected and arranged in a pressing plate mounting hole 12 arranged on the platform 1 through a pressing plate screw 201; the pressing plate 2 is provided with a cantilever blank holder 20, and the edge of the circuit board 8 is tightly pressed between the cantilever blank holder 20 and the platform 1; an anti-impact compression spring 202 is arranged between the upper surface of the pressure plate 2 and the head of the pressure plate screw 201. Through setting up clamp plate 2, can easily insert the circuit board between cantilever blank holder 20 and the platform 1 to fix the circuit board on platform 1, directly push down or push down platform 1 through pushing down the mechanism, can make the contact of circuit board and the head contact of detection needle 9, thereby accomplish the test. Through setting up scour protection pressure spring 202, on the one hand can make clamp plate 2 compress tightly the circuit board on the platform, and on the other hand, when the platform pushes down and makes the contact of circuit board and the head contact of detection needle 9, if the packing force is too big, can overcome the elasticity jack-up clamp plate 2 of scour protection pressure spring 202 to prevent to damage the circuit board.

The pressing plate 2 comprises a first pressing plate 21 and a second pressing plate 22, the first pressing plate 21 is arranged on each of two sides of the circuit board 8, and the second pressing plate 22 is arranged at the far end of the circuit board 8 relative to the operation position.

One end of the first pressing plate 21 is provided with a first tilting portion 210 which is bent upwards along the width direction. By arranging the first tilting part 210, a large-angle entrance is formed between the cantilever blank holder 20 at the end where the first tilting part is arranged and the platform 1, so that a circuit board can be conveniently inserted from the entrance. The first tilting portion 210 is disposed at a side where the device operation site is located.

The edge of the cantilever pressing edge 20 of the second pressing plate 22 is provided with a second tilting portion 220 which is bent upwards along the length direction. By providing the second raised portion 220, a large angle of entry is formed between the cantilevered hold-down edge 20 of the second platen 22 and the platform 1 to facilitate insertion of a circuit board therethrough.

The pressing plate screw 201 is in threaded connection with the platform 1, and the pressing plate screw 201 is in clearance fit with the pressing plate 2.

The platform detection through hole 10 is a rectangular hole formed in the platform 1, and all the circuit contacts 80 to be detected on the circuit board 8 are located within the range of the rectangular hole. The structure shown in the attached drawing of the embodiment of the application is more suitable for monitoring the circuit board with the same size for a long time. Or the platform detection through hole 10 may be a plurality of circular holes formed in the platform 1, and the circuit contacts 80 to be detected on the circuit board 8 are respectively located in the range of one of the circular holes. The installation position that more is fit for can adjusting the clamp plate is with the condition of the circuit board of installation unidimensional, according to the contact condition of different circuit boards punch on the platform can.

The platform 1 is provided with a plurality of pressure plate mounting holes 12. Therefore, the mounting position of the pressing plate can be adjusted to adapt to circuit boards of different sizes.

The number of the guide posts 91 is at least four, the buffer springs 92 are respectively arranged outside the four guide posts 91, and the buffer springs 92 are positioned between the bottom of the platform 1 and the upper surface of the base 90.

Further be convenient for operate, the both ends of platform 1 still are equipped with down and press seat 30 respectively, be equipped with down on the seat 30 and press the mechanism 3 down respectively, be equipped with down pinch roller 4 on pressing the mechanism 3 down, down pinch roller 4 is located the both ends top of platform 1.

Through setting up pushing down mechanism and pinch roller down, can drive the pinch roller down through pulling the pushing down mechanism at both ends and push down platform 1 to make the contact of circuit board and the head contact of detection needle 9, accomplish the test. The action amplitude is small, the operation can be completed by adopting the sitting posture, and the operation is convenient.

The pressing mechanism 3 comprises a pressing rotating shaft 31 arranged on the pressing base 30, a pressing rotating sleeve 32 is fixedly arranged on the pressing rotating shaft 31, and a pressing handle 33 is fixedly connected to the upper portion of the pressing rotating sleeve 32.

The pressing rotary shaft 31 is relatively rotatably mounted in a bearing seat 310 provided on the pressing base 30 through a bearing.

The pressing rotating shaft 31 is provided with two pressing rotating sleeves 32, the pressing handle 33 comprises two handle supporting rods 331 and a handle push-pull rod 332 arranged at the top of the handle supporting rods 331, and the bottoms of the two handle supporting rods 331 are respectively fixedly connected with the pressing rotating sleeves 32.

The pressing rotating sleeve 32 is further fixedly connected with a pressing wheel connecting rod 41, the end portion of the pressing wheel connecting rod 41 is provided with a pressing wheel rotating sleeve 42, a pressing wheel rotating shaft 43 is arranged in the pressing wheel rotating sleeve 42, and a plurality of pressing wheels 4 capable of rotating relatively are mounted on the pressing wheel rotating shaft 43 through bearings.

In order to further enhance the reliability, buffering screws 51 are arranged in at least two pressure plate mounting holes 12 of the plurality of pressure plate mounting holes 12, and rubber buffering blocks 50 are connected and arranged at the end parts of the buffering screws 51 below the platform 1. The impact force is prevented from being too violent when the platform is pressed down, and the circuit board is prevented from being damaged. Through the scour protection pressure spring 202 on upper portion and the rubber buffer block 50 of lower part, can guarantee the reliable contact between detection needle and the circuit contact, can avoid damaging the circuit board again to the degree of difficulty when reducing the operation.

The height of the rubber buffer block 50 is smaller than the distance between the head of the detection pin 9 and the circuit contact 80.

According to the circuit function test fixture of the circuit board, the whole height is low, the operation height is reduced, and the use in a sitting posture is facilitated; the circuit board is fixed by inserting, so that the clamping convenience in the test process of the circuit board is improved; meanwhile, large-size components such as a traditional stand column, a pressing mechanism depending on the stand column, a rubber column and the like are eliminated, materials are reduced, and cost is saved.

The terms "upper", "lower" or "above", "below" or the like are used herein in a relative relationship with respect to a normal use in a placed state, i.e., a positional relationship as generally shown in the drawings of the present application. When the placement state changes, for example, when the placement state is turned over, the corresponding positional relationship should be changed accordingly to understand or implement the technical solution of the present application.

Claims

1. A circuit function test fixture for a circuit board comprises a platform (1), wherein a plurality of guide posts (91) are arranged at the bottom of the platform (1), and the guide posts (91) are arranged in a base (90) in a relatively movable manner; a detection dial is arranged in the base (90), a plurality of detection needles (9) are arranged on the detection dial, and a circuit board (8) to be detected is arranged above the platform (1); the detection device is characterized in that a platform detection through hole (10) is formed in the platform (1) below a circuit contact (80) on the circuit board (8), and the head of the detection pin (9) is located in the platform detection through hole (10) and aligned with the circuit contact (80) respectively; the platform (1) is also provided with a pressing plate (2), and the pressing plate (2) is connected and arranged in a pressing plate mounting hole (12) formed in the platform (1) through a pressing plate screw (201); the pressing plate (2) is provided with a cantilever pressing edge (20), and the edge of the circuit board (8) is tightly pressed between the cantilever pressing edge (20) and the platform (1); an anti-impact compression spring (202) is arranged between the upper surface of the pressure plate (2) and the head of the pressure plate screw (201).

2. A circuit board circuit function testing fixture according to claim 1, characterized in that said pressing plate (2) comprises a first pressing plate (21) and a second pressing plate (22), one first pressing plate (21) is provided on each side of said circuit board (8), and a second pressing plate (22) is provided on the far end of said circuit board (8) relative to the operation position.

3. The circuit board circuit function test fixture according to claim 2, wherein one end of the first pressing plate (21) is provided with a first tilting portion (210) bent upwards along the width direction.

4. The circuit board circuit function test fixture as claimed in claim 2, wherein the edge of the cantilever edge pressing (20) of the second pressing plate (22) is provided with a second tilting portion (220) bent upwards along the length direction.

5. The circuit board circuit function test fixture according to claim 1, wherein the press plate screw (201) is in threaded connection with the platform (1), and the press plate screw (201) is in clearance fit with the press plate (2).

6. The circuit board circuit function test fixture of claim 1, wherein the platform detection through hole (10) is a rectangular hole formed in the platform (1), and all circuit contacts (80) to be tested on the circuit board (8) are located within the range of the rectangular hole.

7. The circuit board circuit function test fixture of claim 1, wherein the platform detection through holes (10) are a plurality of circular holes formed in the platform (1), and the circuit contacts (80) to be detected on the circuit board (8) are respectively located within the range of one of the circular holes.

8. The circuit board circuit function test fixture as claimed in claim 1, wherein the platform (1) is provided with a plurality of press plate mounting holes (12).

9. The circuit board circuit function test fixture as claimed in claim 1, wherein the number of the guide posts (91) is at least four, and the outer portions of the four guide posts (91) are respectively provided with a buffer spring (92), and the buffer springs (92) are located between the bottom of the platform (1) and the upper surface of the base (90).