Open and short circuit test fixture

Abstract

The utility model provides an open and short circuit test fixture, and belongs to the technical field of open and short circuit detection equipment. The open and short circuit test fixture comprises a fixture assembly and a detection assembly. The jig assembly comprises a base, a detection box is installed on the base, a movable containing plate is installed on the base, one end of the containing plate is fixedly connected with a first pressing plate, a clamping groove is formed in the other end of the containing plate, a movable pressing piece is clamped in the clamping groove, and the pressing end of the movable pressing piece can stretch out and draw back. And the detection assembly is mounted in the detection box and is located right above the placement plate when the detection box is closed. Through the arrangement of the first pressing plate and the clamping connection of the movable pressing piece and the clamping groove, the circuit board can be limited more quickly, and the detection efficiency of the open circuit and the short circuit of the circuit board is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of open / short circuit detection devices, in particular to an open / short circuit test fixture. BACKGROUND

[0002] With the development of electronic products towards miniaturization, multifunctionalization, portability and high performance, the circuit board as the main component of electronic products also evolves towards high density, multi-level and fine pitch, which poses a new challenge to the circuit board manufacturing industry. If defective products are not screened out in time during the manufacturing process, it will inevitably increase the scrap rate of products and increase the cost of downstream processes. Therefore, it is necessary to test the open and short circuits of the produced circuit board. That is, test needles are placed at the end of the circuit, power is supplied, the resistance of the same network (circuit) is greater than the minimum conduction resistance, and the resistance of the different network (circuit) is less than the minimum insulation resistance, which is displayed as open circuit and short circuit. The open / short circuit test of the circuit board is a crucial step in the production and detection of the circuit board. At this time, a fixture for open / short circuit test of the circuit board is needed to detect the open / short circuit of the circuit board.

[0003] As disclosed in Chinese Application No. 202023081933.8, a fixture for open / short circuit test of the circuit board can test the circuit board, but the structure for limiting the circuit board to be tested is relatively complex, which increases the time for limiting the circuit board and affects the efficiency of the open / short circuit test of the circuit board. CONTENT OF THE UTILITY MODEL

[0004] In order to make up for the above shortcomings, the present application provides an open / short circuit test fixture, which aims to improve the problem that the structure for limiting the circuit board is relatively complex, which increases the time for limiting the circuit board and affects the efficiency of the open / short circuit test of the circuit board.

[0005] The present application provides an open / short circuit test fixture, which comprises a fixture assembly and a detection assembly.

[0006] The fixture assembly comprises a base, a detection box is installed on the base, a movable placement plate is installed on the base, a first pressing plate is fixedly connected to one end of the placement plate, a clamping groove is formed in the other end of the placement plate, a movable pressing piece is clamped in the clamping groove, and the pressing end of the movable pressing piece can be telescopic.

[0007] The detection assembly is installed in the inside of the detection box and located directly above the placement plate when the detection box is closed.

[0008] In a specific embodiment, the movable pressing piece comprises a mounting block, the mounting block is clamped in the clamping groove, and a second pressing plate that can be pulled is arranged on the side of the mounting block close to the first pressing plate.

[0009] In a specific embodiment, the side of the mounting block is provided with a slot, and one end of the second pressing plate is movably inserted into the slot.

[0010] In a specific embodiment, the upper surface of the second pressing plate is provided with an elastic clamping piece, and the top wall of the slot is provided with a plurality of arc-shaped grooves equidistantly arranged and matched with the elastic clamping piece.

[0011] In a specific embodiment, the elastic clamping piece comprises a circular clamping block, and a telescopic spring is fixedly connected to the bottom of the circular clamping block and connected to the second pressing plate, and the circular clamping block is matched with each arc-shaped groove.

[0012] In a specific embodiment, the outer end of the second pressing plate is further fixedly connected with a handle.

[0013] In a specific embodiment, the lower surface of the second pressing plate is pasted with a second elastic pad.

[0014] In a specific embodiment, the lower surface of the first pressing plate is pasted with a first elastic pad.

[0015] Beneficial effects:

[0016] 1. By arranging the first pressing plate and the clamping of the movable pressing piece and the clamping groove, the circuit board can be positioned more quickly, thereby improving the detection efficiency of the open / short circuit of the circuit board.

[0017] 2. By the sliding connection of the placing plate and the supporting plate, the position of the circuit board can be changed, so that each position can be detected when the detection assembly detects the circuit board, thereby improving the detection accuracy.

[0018] 3. The pressing end of the movable pressing piece can be telescopic, so that circuit boards of various specifications can be pressed, thereby improving the practicability of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0020] Figure 1 is a schematic diagram of the open / short circuit test fixture structure provided by the embodiments of the present application;

[0021] Figure 2The connection relationship structure between the detection boxes is shown in the schematic view provided by the embodiment of the present application.

[0022] Figure 3 The base structure is shown in the schematic view provided by the embodiment of the present application.

[0023] Figure 4 The connection relationship structure between the support plate and the placement plate is shown in the schematic view provided by the embodiment of the present application.

[0024] Figure 5 The connection relationship structure between the placement plate, the first pressing plate and the movable pressing member is shown in the schematic view provided by the embodiment of the present application.

[0025] Figure 6 The first pressing plate structure is shown in the schematic view provided by the embodiment of the present application.

[0026] Figure 7 The movable pressing member structure is shown in the schematic view provided by the embodiment of the present application.

[0027] Figure 8 The movable pressing member structure is shown in the schematic view provided by the embodiment of the present application.

[0028] Figure 9 The connection relationship structure between the support plate and the placement plate is shown in the schematic view provided by the embodiment of the present application. Figure 8 The enlarged structure at A in the schematic view provided by the embodiment of the present application.

[0029] In the figure: 10 - jig assembly; 110 - base; 120 - detection box; 130 - elastic clamping member; 131 - circular clamping block; 132 - telescopic spring; 150 - support plate; 160 - placement plate; 161 - clamping groove; 170 - driving member; 180 - movable pressing member; 181 - mounting block; 1811 - arc-shaped groove; 182 - second pressing plate; 183 - handle; 184 - second elastic pad; 190 - first pressing plate; 191 - first elastic pad; 20 - detection assembly. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0031] Please refer to Figures 1-9 , the present application provides an open / short circuit test jig, which comprises a jig assembly 10 and a detection assembly 20.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9The jig assembly 10 comprises a base 110, a detection box 120 is installed on the base 110, a movable placing plate 160 is installed on the base 110, a supporting plate 150 is fixedly connected to the base 110, a driving piece 170 is installed on the supporting plate 150, the driving piece 170 drives the placing plate 160 to move, the driving piece 170 comprises two bearing seats, threaded rods are arranged on the two bearing seats, a fixed block is fixedly connected to the placing plate 160, one end of the threaded rod is fixedly connected with the fixed block, the other end of the threaded rod is connected with the driving end of the motor, strip-shaped sliding blocks are symmetrically installed on the upper surface of the supporting plate 150, and the placing plate 160 is slidably connected with the two strip-shaped sliding blocks. One end of the placing plate 160 is fixedly connected with a first pressing plate 190, a clamping groove 161 is formed in the other end of the placing plate 160, a movable pressing piece 180 is clamped in the clamping groove 161, the pressing end of the movable pressing piece 180 is telescopic, and a first elastic pad 191 is attached to the lower surface of the first pressing plate 190. When the circuit board is subjected to the open-short circuit test, the detection box 120 is opened, the circuit board is placed on the placing plate 160, the circuit board is pushed into the lower side of the first pressing plate 190, the movable pressing piece 180 is placed in the clamping groove 161, the movable pressing piece 180 presses the other end of the circuit board, the detection box 120 is closed, and the detection probe on the detection assembly 20 detects the open-short circuit of the circuit board. Through the arrangement of the first pressing plate 190 and the clamping arrangement of the movable pressing piece 180 and the clamping groove 161, the circuit board is more quickly limited, and the detection efficiency of the open-short circuit of the circuit board is improved. Through the sliding connection of the placing plate 160 and the supporting plate 150, the position of the circuit board can be changed, so that the detection assembly 20 can detect at each position when detecting the circuit board, and the detection precision is improved. The telescopic pressing end of the movable pressing piece 180 can press the circuit board of various specifications, and the practicability of the whole device is improved.

[0033] In the embodiment, the movable pressing member 180 comprises a mounting block 181 which is clamped inside the clamping groove 161, and the mounting block 181 is provided with a second pressing plate 182 which can be pulled, at a side close to the first pressing plate 190. The side surface of the mounting block 181 is provided with a slot, and one end of the second pressing plate 182 is movably inserted into the slot. The upper surface of the second pressing plate 182 is provided with an elastic clamping piece 130, and the top wall of the slot is provided with a plurality of arc-shaped grooves 1811 which are equidistantly arranged and matched with the elastic clamping piece 130. The elastic clamping piece 130 comprises a circular clamping block 131, and the bottom of the circular clamping block 131 is fixedly connected with a telescopic spring 132 which is connected with the second pressing plate 182, and the circular clamping block 131 is matched with each arc-shaped groove 1811, respectively. The outer end of the second pressing plate 182 is further fixedly connected with a handle 183. The lower surface of the second pressing plate 182 is pasted with a second elastic pad 184. When detecting circuit boards of different specifications, the mounting block 181 is first pressed inside the clamping groove 161, and then the handle 183 can be pushed or pulled, so that the second pressing plate 182 can move, and when the second pressing plate 182 moves, the internal circular clamping block 131 will also move and enter an arc-shaped groove 1811, so as to fix the second pressing plate 182, thereby being capable of limiting circuit boards of different sizes.

[0034] Referring to Figure 1 and Figure 2 , the detection assembly 20 is installed inside the detection box 120 and located directly above the placement plate 160 when the detection box 120 is closed. The specific structure and detection principle of the detection assembly 20 are prior art and will not be described in detail here.

[0035] The working principle of the open-short test fixture is as follows:

[0036] When the open-short test of the circuit board is performed, the detection box 120 is opened, the circuit board is placed on the placement plate 160, the circuit board is pushed into the lower side of the first pressing plate 190, and then the movable pressing member 180 is placed inside the clamping groove 161, so that the movable pressing member 180 presses the other end of the circuit board, and then the detection box 120 is closed, and the detection probe of the detection assembly 20 performs the open-short detection on the circuit board. Through the arrangement of the first pressing plate 190 and the clamping arrangement of the movable pressing member 180 and the clamping groove 161, the circuit board is more quickly limited, thereby improving the detection efficiency of the open-short test of the circuit board. Through the sliding connection between the placement plate 160 and the supporting plate 150, the position of the circuit board can be changed, so that the detection assembly 20 can detect every position when detecting the circuit board, thereby improving the detection accuracy. The pressing end of the movable pressing member 180 can be telescopic, so that the circuit boards of various specifications can be pressed, thereby improving the practicability of the whole device.

[0037] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numbers and letters represent similar items in the following drawings, thus, once an item is defined in one drawing, it need not be further defined and explained in the subsequent drawings.

Claims

1. An open-short test fixture, comprising: Comprising The tool assembly (10) comprises a base (110) on which a detection box (120) is mounted, and a movable placement plate (160) is mounted on the base (110), one end of the placement plate (160) is fixedly connected with a first pressing plate (190), the other end of the placement plate (160) is provided with a clamping groove (161), and a movable pressing piece (180) is clamped in the clamping groove (161), and the pressing end of the movable pressing piece (180) can be telescopic. The detection assembly (20) is installed in the detection box (120) and located above the placement plate (160) when the detection box (120) is closed.

2. The open-short test fixture of claim 1, wherein, The movable pressing piece (180) comprises a mounting block (181), the mounting block (181) is clamped in the clamping groove (161), and a second pressing plate (182) which can be pulled is arranged on one side of the mounting block (181) close to the first pressing plate (190).

3. The open-short test fixture of claim 2, wherein, The side surface of the mounting block (181) is provided with a slot, and one end of the second pressing plate (182) is movably inserted into the slot.

4. The open / short test fixture of claim 3, wherein, The upper surface of the second pressing plate (182) is provided with an elastic clamping piece (130), and the top wall of the slot is provided with a plurality of arc-shaped grooves (1811) which are equidistantly arranged and matched with the elastic clamping piece (130).

5. The open / short test fixture of claim 4, wherein, The elastic clamping piece (130) comprises a circular clamping block (131), the bottom of the circular clamping block (131) is fixedly connected with a telescopic spring (132), the telescopic spring (132) is connected with the second pressing plate (182), and the circular clamping block (131) is matched with each arc-shaped groove (1811).

6. The open / short test fixture of claim 2, wherein, The outer end of the second pressing plate (182) is further fixedly connected with a handle (183).

7. The open / short test fixture of claim 2, wherein, The lower surface of the second pressing plate (182) is pasted with a second elastic pad (184).

8. The open / short test fixture of claim 1, wherein, The lower surface of the first pressing plate (190) is pasted with a first elastic pad (191).

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