CN215263868U

CN215263868U - Spring type clamping-free PCB testing structure

Info

Publication number: CN215263868U
Application number: CN202121480383.9U
Authority: CN
Inventors: 杨柯
Original assignee: Dfine Technology Co Ltd
Current assignee: Dfine Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-21
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a spring type clamping-free PCB testing structure, which comprises a frame (1), a bottom plate (2), a spring (3), a base plate (4) and a printed board (5), wherein the frame (1) and the bottom plate (2) are assembled through screws; a spring (3) is arranged on the bottom plate (2); the inner wall of the frame (1) is provided with a guide rail groove, and the backing plate (4) is inserted in the guide rail groove; the lower end of the spring (3) is connected with the base plate (4), and the printed board (5) is horizontally inserted into an upper side track formed by the base plate (4) and the frame (1). The utility model discloses when printing board (5) test in batches, improve printing board (5) assembly efficiency, promote the test index degree of accuracy simultaneously, ensure that printing board (5) microstrip line and connector (7) core are reliably tightly connected to greatly improve product test qualification rate and production efficiency.

Description

Spring type clamping-free PCB testing structure

Technical Field

The utility model relates to an electronic communication technical field especially relates to a clamping PCB board test structure is exempted from to spring.

Background

With the explosion of the electronic industry, China today has become a world factory. The production efficiency, quality control and cost of electronic manufacturing enterprises determine the competitiveness of the enterprises. The electronic product is highly integrated, the size of the patch element and the density of the PCB reach unprecedented levels, the updating and upgrading speed of the product is higher and higher, and the manufacturing capability of a factory is more and more challenged due to the fact that the lines are frequently changed in multiple models and small batches.

In the field of electronic communication industry, the internal space of the whole machine (module) is often extremely limited, signal input/output on a part of printed boards is usually lap joint of microstrip lines (instead of connectors), and a test fixture with a special connector is required to be designed when a single board is tested independently, so that the indexes of the single board can be tested conveniently.

In the conventional design, a printed board and a clamp are fixed through screws, and then a connector is assembled, and the printed board is generally disassembled and installed for many times in the debugging process; in the mode, a large amount of time is consumed for mounting and dismounting the printed board in batch production, and due to the fact that the contact distance between the connector core and the microstrip line of the printed board is fixed, part of poor contact can be caused by batch tolerance difference, and the accuracy of index testing is affected. Therefore, the conventional clamp test needs multiple operations, and has low precision and low efficiency.

The invention discloses a PCB testing method, a PCB testing device and PCB testing equipment, which are disclosed in the invention patent application with the application number of CN201710512212.1, and relates to the field of PCB testing. The method comprises the following steps: acquiring the integral distance from the zero point of the probe on the test shaft to the upper surface of the PCB; determining an adjusting point between the zero point of the probe and the upper surface of the PCB according to the integral distance; controlling the test shaft to move in a position mode, and controlling the test shaft to move in a torque mode when the probe on the test shaft moves to the adjusting point; when the test shaft moves to the integral distance from the probe to the PCB, the test shaft stops moving and carries out corresponding tests, so that the detection efficiency can be improved, but the PCB still needs to be clamped firstly in the test mode.

Therefore, a spring type clamping-free PCB testing structure is needed to be provided, so that the problem that the printed board is generally dismounted and mounted for many times in the debugging process is solved; in the mode, a large amount of time is consumed for mounting and dismounting the printed board in batch production, and due to the fact that the contact distance between the connector core and the microstrip line of the printed board is fixed, part of poor contact can be caused by batch tolerance difference, and the accuracy of index testing is affected. Therefore, the conventional clamp test needs multiple operations, and has the technical problems of low precision and low efficiency

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamping PCB board test structure is exempted from to spring, when aiming at solving batch test among the prior art, can consume a large amount of time in the installation of printing board, dismantle, and the technical problem of measuring accuracy is not high, inefficiency.

In order to solve the technical problem, the utility model provides a clamping PCB board test structure is exempted from to spring.

Clamping PCB board test structure is exempted from to spring includes: the spring type printed circuit board comprises a frame, a bottom plate, a spring, a base plate and a printed board, wherein the frame and the bottom plate are assembled through screws; a spring is arranged on the bottom plate; the inner wall of the frame is provided with a guide rail groove, and the backing plate is inserted in the guide rail groove; the lower end of the spring is connected with the lower end of the base plate, and the printed board is horizontally inserted into an upper side track formed by the base plate and the frame.

Preferably, the printed circuit board further comprises a carrier board, and the printed circuit board and the carrier board are sintered together.

Preferably, the carrier plate is arranged below the printed board.

Preferably, the connector further comprises three connectors, and the three connectors are respectively assembled outside the three side walls of the frame through screws.

Preferably, the bottom plate is further provided with a spring groove, and the spring is installed in the spring groove.

Preferably, the frame is made of C-shaped plates.

Preferably, the lower edge of the connector core is slightly lower than the bottom surface of the upper rail.

The utility model discloses following beneficial effect has:

(1) when the printed boards are tested in batches, the assembly efficiency of the printed boards is improved, and meanwhile, the accuracy of test indexes is improved;

(2) the reliable and tight connection between the microstrip line of the printed board and the connector core is ensured, so that the test qualification rate and the production efficiency of products are greatly improved;

(3) during batch testing, the clamping printed board does not need to use any auxiliary tool or manual work to assemble and disassemble the threaded fastener, the toolless quick replacement is realized, and the working efficiency is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the following description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a structural diagram of the components of the present invention;

FIG. 3 is a schematic view of the structure of the assembly of the present invention;

FIG. 4 is a schematic view of the structure of the assembly of the present invention;

FIG. 5 is a schematic structural view of a component (IV) of the present invention;

in the figure, 1-frame, 2-bottom plate, 3-spring, 4-backing plate, 5-printed board, 6-carrier plate, 7-connector;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

In order to solve the technical problem, a spring type clamping-free PCB testing structure is provided.

As shown in fig. 1, in this embodiment, a spring type clamping-free PCB testing structure includes a frame 1, a bottom plate 2, a spring 3, a backing plate 4, and a printed board 5, where the frame 1 and the bottom plate 2 are assembled by screws; a spring 3 is arranged on the bottom plate 2; the inner wall of the frame 1 is provided with a guide rail groove, and the backing plate 4 is inserted in the guide rail groove; the base plate 4 is connected with the upper end of the spring 3, and the printed board 5 is horizontally inserted into an upper side track formed by the base plate 4 and the frame 1;

specifically, the method comprises the following steps:

(1) the first step is as follows:

firstly, assembling the frame 1, the bottom plate 2 and the connector 7 through screws; a spring 3 is arranged in a spring groove corresponding to the bottom plate 2; a backing plate 4 is arranged at the upper end of the spring 3; the bottom plate 2, the spring 3 and the backing plate 4 form an elastic kinematic pair which can only move in the vertical direction;

(2) the second step is that:

then, the backing plate 4 is vertically pressed downwards, the printed board 5 and the carrier board 6 are horizontally inserted into a track formed by the backing plate 4 and the frame 1, the printed board and the carrier board are inserted to the bottom, and the vertical pressure is gradually released;

(3) the third step:

the edge of the printed board 5 automatically props against the bottom surface of the upper side track, so that the core of the connector 7 is in close contact with the microstrip line of the printed board 5 (the lower edge of the core of the connector is slightly lower than the bottom surface of the upper side track during design, so that the core and the printed board 5 are guaranteed to be compressed, and the printed board 5 cannot deform and crush the core due to the edge of the track compression board), and the test can be started.

In this embodiment, a carrier board 6 is further included, and the printed board 5 and the carrier board 6 are sintered together.

In the present embodiment, the carrier board 6 is disposed below the printed board 5.

In this embodiment, there are three connectors 7, and the connectors 7 are respectively assembled outside the three side walls of the frame 1 by screws.

In this embodiment, a spring groove is further disposed on the bottom plate 2, and the spring 3 is installed in the spring groove.

In the present embodiment, the frame 1 is made of a C-shaped plate.

In this embodiment, the lower edge of the core of the connector 7 is slightly lower than the bottom surface of the upper rail.

Specifically, the assembly method and the steps of the structure are as follows:

(1) as shown in fig. 2, the frame 1, the chassis 2, and the connector 7 are assembled by screws to form an assembly (r).

(2) As shown in fig. 3, the printed board 5 and the carrier board 6 are sintered together to form a package (c).

(3) As shown in fig. 4, a spring 3 is arranged in a spring groove corresponding to the bottom plate 2 in the assembly (i); then the backing plate 4 is inserted into the guide rail groove of the component (I), and is pushed to the bottom along the direction shown in the figure, so that the spring 3, the backing plate 4 and the component (I) form an elastic kinematic pair which can only move in the vertical direction, and finally form the component (III).

(4) As shown in fig. 5, the subassembly (4) is vertically pressed down, the subassembly (III) is placed on the backing plate (4), and is horizontally inserted into the track of the subassembly (III), the subassembly is inserted to the bottom, the vertical pressure is gradually released, and the edge of the printed board (5) automatically pushes against the bottom surface of the upper track to form the subassembly (IV).

It is to be added that, among others:

the assembly (I) consists of a frame 1, a bottom plate 2 and a connector 7;

the component II consists of a printed board 5 and a carrier board 6;

the component III consists of a component I, a spring 3 and a backing plate 4;

the component (IV) consists of a component (II) and a component (III).

Wherein, the carrier plate 6 can be omitted.

The utility model discloses an aim at improves printing board assembly efficiency when the printing board tests in batches, promotes the test index degree of accuracy simultaneously (ensures that printing board microstrip line and connector core are reliably tightly connected) to greatly improve product testing qualification rate and production efficiency.

During batch testing, the clamping printed board does not need to use any auxiliary tool (or manual work) to assemble and disassemble the threaded fastener, so that toolless quick replacement is realized, and the working efficiency is greatly improved.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A spring type clamping-free PCB testing structure is characterized by comprising a frame (1), a bottom plate (2), a spring (3), a base plate (4) and a printed board (5), wherein the frame (1) and the bottom plate (2) are assembled through screws; a spring (3) is arranged on the bottom plate (2); the inner wall of the frame (1) is provided with a guide rail groove, and the backing plate (4) is inserted in the guide rail groove; the lower end of the spring (3) is connected with the base plate (4), and the printed board (5) is horizontally inserted into an upper side track formed by the base plate (4) and the frame (1).

2. A spring clamp-free PCB board test structure according to claim 1, further comprising a carrier board (6), wherein the printed board (5) and the carrier board (6) are sintered together.

3. A spring type clamp-free PCB board test structure according to claim 2, wherein the carrier board (6) is disposed under the printed board (5).

4. A spring type clamp-free PCB board test structure according to claim 1, further comprising three connectors (7), wherein the three connectors (7) are respectively assembled outside three side walls of the frame (1) by screws.

5. A spring type clamping-free PCB board test structure as claimed in claim 1, wherein a spring groove is further provided on the bottom board (2), and the spring (3) is installed in the spring groove.

6. A spring type clamping-free PCB board test structure according to claim 1, characterized in that the frame (1) is a C-shaped plate.

7. A spring type clamp-free PCB test structure as claimed in claim 4, wherein the lower edge of the core of the connector (7) is slightly lower than the bottom surface of the upper side rail.