CN215453666U - Circuit board locking mechanism - Google Patents

Abstract

The utility model discloses a circuit board locking mechanism which comprises a bottom plate, wherein two parallel supporting plates are vertically arranged on two sides of the upper part of the bottom plate, and a plurality of circuit boards which are arranged in parallel up and down are arranged between two opposite side surfaces of the two supporting plates; each circuit board all is fixed in between two backup pads through a plurality of locking structure, locking structure includes latch segment and major part screw, and the latch segment includes fixed block and jack catch main part, and the backup pad is equipped with the logical groove with the fixed block adaptation, fixed block and major part screw threaded connection. The utility model has simple structure and convenient operation, can realize the reliable locking of the circuit board in the missile launching control test equipment, improves the anti-vibration property of the fastening of the circuit board and adapts to the harsh field use environment of the missile launching control test equipment; the locking structure can realize tool-free circuit board locking or opening, occupies a small area, hardly occupies a circuit board space, and can greatly improve the wiring utilization rate of the circuit board.

Description

Circuit board locking mechanism

Technical Field

The utility model relates to the technical field of circuit board locking, in particular to a circuit board locking mechanism.

Background

The missile launching control test equipment is frequently subjected to a field strong dragging vibration environment in the using process, is frequently used and operated, is different from the common electronic case equipment, is relatively fixed in use environment, is mostly indoor environment, and is relatively good in use environment. The circuit board in the missile launch control test equipment has firm and reliable installation and fixation requirements, convenient disassembly and good vibration resistance. At present, electronic circuit board locking mechanisms are various in missile testing equipment, and comprise bar-shaped locking mechanisms, screw fastening mechanisms and card clamping mechanisms, and the bar-shaped locking mechanisms are most commonly used. The circuit board strip-shaped locking mechanism adopts a wedge block locking mode, the fixing strip is riveted on the edge of the circuit board through a rivet, the long and thin screw rod penetrates through the fixing strip, the long and thin screw rod is screwed by a screwdriver to drive the driving wedge block to be folded, so that the driven wedge block rises along the height direction, and the gap between the driven wedge block and the chassis board slot is eliminated, thereby achieving the purpose of locking the circuit board. The strip-shaped locking mechanism has the risk that a circuit board falls off in long-term use, and the long and thin screw rod is difficult to process, is easy to block in the dismounting process, and has the defects of inconvenient operation and the like.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide a circuit board locking mechanism which is simple in structure and convenient to operate, can realize reliable locking of a circuit board in the missile launch control testing equipment, improves the anti-vibration property of fastening the circuit board and adapts to the harsh field use environment of the missile launch control testing equipment; the locking structure can realize tool-free circuit board locking or opening, occupies a small area, hardly occupies a circuit board space, can greatly improve the wiring utilization rate of the circuit board, and can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a circuit board locking mechanism comprises a bottom plate, wherein two parallel supporting plates are vertically arranged on two sides of the upper part of the bottom plate, and a plurality of circuit boards which are arranged in parallel up and down are arranged between two opposite side surfaces of the two supporting plates; each circuit board is fixed between the two supporting plates through a plurality of locking structures, each locking structure comprises a locking block and a large head screw, each locking block comprises a fixing block and a clamping jaw main body, the supporting plates are provided with through grooves matched with the fixing blocks, the fixing blocks are in threaded connection with the large head screws, the end of the big head screw is abutted against the side surface of the support plate far away from the circuit board, one end of the fixing block close to the circuit board is fixedly connected with the jaw main body, the jaw main body is provided with two oppositely arranged clamping parts, a groove for accommodating the edge of the circuit board is formed between the two clamping parts, the upper part and the lower part of the jaw main body are correspondingly provided with convex parts, and the two convex parts are abutted against the plate surface of the support plate, when the big head screw is screwed, the big head screw pulls the jaw main body to move through the fixing block, the jaw main body is limited by the positioning and abutting effect of the protruding part, and the jaw main body deforms to enable the two clamping parts to move relatively to clamp the circuit board.

Preferably, the lug bosses at the upper part and the lower part of the jaw main body are symmetrically arranged, and the distance between the two lug bosses is greater than the height of the through groove.

Preferably, each circuit board is fixed through four locking structures, and the four locking structures are symmetrically arranged on the two support plates.

Preferably, the jaw body is made of high-strength stainless steel.

Preferably, the support plate is fixed to the base plate by screws.

Compared with the prior art, the utility model has the beneficial effects that: the circuit board locking mechanism has a simple structure and is convenient to operate, the claw main body is deformed by screwing the large-head screw, the circuit board is locked, a single-point locking or multi-point locking of a single circuit board can be realized, and a plurality of circuit boards can be locked in a single-point or multi-point mode by combination and superposition; the claw body is made of high-strength stainless steel, the elastic deformation range is large, the locking force application range is large, the reliable locking of a circuit board in the missile launch control testing equipment can be realized, the anti-vibration performance of the fastening of the circuit board is improved, and the environment is suitable for harsh field use of the missile launch control testing equipment. In the using process, the circuit board can be locked or unlocked without tools, and the circuit board does not need to be processed for the second time; in addition, the locking structure occupies a small area, hardly occupies the space of the circuit board, and can greatly improve the wiring utilization rate of the circuit board.

Drawings

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is an enlarged view of the structure at A of the present invention.

In the figure: 1 backup pad, 1.1 logical groove, 2 circuit boards, 3 latch segments, 3.1 fixed blocks, 3.2 bellying, 3.3 clamping part, 3.4 jack catch main parts, 4 bottom plates, 5 big head screws.

Detailed Description

In the following description, the technical solutions of the present invention will be described with reference to the drawings of the embodiments of the present invention, and it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary to indicate or imply that the indicated devices or elements have a specific orientation:

referring to fig. 1-4, the present invention provides a technical solution: a circuit board locking mechanism comprises a bottom plate 4, two parallel supporting plates 1 are vertically arranged on two sides of the upper part of the bottom plate 4, and a plurality of circuit boards 2 which are arranged in parallel up and down are arranged between two opposite side faces of the two supporting plates 1; each circuit board 2 is fixed between the two supporting plates 1 through a plurality of locking structures, the locking structures can lock a single circuit board 2 in a single-point or multi-point mode, and in addition, the locking structures can be combined and overlapped to lock a plurality of circuit boards 2 in a single-point or multi-point mode, so that different use conditions are met;

the locking structure comprises a locking block 3 and a large head screw 5, the locking block 3 comprises a fixed block 3.1 and a jaw main body 3.4, the supporting plate 1 is provided with a through groove 1.1 matched with the fixed block 3.1, the fixed block 3.1 is in threaded connection with the large head screw 5, the end of the big head screw 5 is abutted against the side of the supporting plate 1 far away from the circuit board 2, one end of the fixing block 3.1 close to the circuit board 2 is fixedly connected with a jaw main body 3.4, the jaw main body 3.4 is provided with two oppositely arranged clamping parts 3.3, a groove for accommodating the edge of the circuit board 2 is formed between the two clamping parts 3.3, the upper part and the lower part of the jaw main body 3.4 are correspondingly provided with convex parts 3.2, and the two convex parts 3.2 are both abutted against the plate surface of the supporting plate 1, when the big head screw 5 is screwed, the big head screw 5 pulls the jaw main body 3.4 to move through the fixing block 3.1, the jaw main body 3.4 is limited by the positioning and abutting action of the convex part 3.2, and the two clamping parts 3.3 move relatively to clamp the circuit board 2 due to the deformation of the jaw main body 3.4;

it can be understood that the big head screw 5 is screwed, the big head screw 5 is in threaded connection with the fixed block 3.1, the fixed block 3.1 is pulled to move in the through groove 1.1, the fixed block 3.1 pulls the middle part of the jaw main body 3.4, because the protruding parts 3.2 at the upper part and the lower part of the jaw main body 3.4 are abutted to the plate surface of the support plate 1, under the action of the pulling force of the fixed block 3.1, the two clamping parts 3.3 rotate around the corresponding protruding parts 3.2 in a small amplitude, so that the circuit board 2 is clamped by the two clamping parts 3.3 by using the flexible lever micro-deformation principle, and because the jaw main body 3.4 is made of high-strength stainless steel and has a large elastic deformation range, the usable range of the locking force is large, the reliable locking of the circuit board in the missile launch control test equipment can be realized, the vibration resistance of the fastening of the circuit board is improved, and the circuit board is suitable for the harsh field use environment of the missile launch control test equipment; in actual use, the locking or loosening operation of the circuit board 2 can be completed by screwing the big head screw 5, and the operation is simple;

the protrusions 3.2 at the upper part and the lower part of the jaw main body 3.4 are symmetrically arranged, and the distance between the two protrusions 3.2 is larger than the height of the through groove 1.1, so that the two protrusions 3.2 can be abutted against the supporting plate 1, and the jaw main body 3.4 can be prevented from passing through the through groove 1.1 when the fixing block 3.1 is pulled;

specifically, each circuit board 2 is fixed through four locking structures, the four locking structures are symmetrically arranged on the two supporting plates 1, and the four locking structures are adopted to position the circuit boards 2 at four points, so that the locking is firm;

in addition, the supporting plate 1 is fixed on the bottom plate 4 through screws, and the screws penetrate through the bottom plate 4 and are in threaded connection with the supporting plate 1, so that the supporting plate 1 is convenient to disassemble.

The utility model is not described in detail in the prior art, and it is apparent to a person skilled in the art that the utility model is not limited to details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the scope of the claims concerned.

Claims (5)

1. A circuit board locking mechanism comprises a bottom plate (4), and is characterized in that: two parallel supporting plates (1) are vertically arranged on two sides of the upper part of the bottom plate (4), and a plurality of circuit boards (2) which are arranged in parallel up and down are arranged between two opposite side surfaces of the two supporting plates (1); each circuit board (2) is fixed between two supporting plates (1) through a plurality of locking structures, each locking structure comprises a locking block (3) and a large-head screw (5), each locking block (3) comprises a fixing block (3.1) and a jaw main body (3.4), each supporting plate (1) is provided with a through groove (1.1) matched with the corresponding fixing block (3.1), each fixing block (3.1) is in threaded connection with the corresponding large-head screw (5), the end head of each large-head screw (5) is abutted to the side face, far away from the circuit board (2), of each supporting plate (1), one end, close to the circuit board (2), of each fixing block (3.1) is fixedly connected with the corresponding jaw main body (3.4), each jaw main body (3.4) is provided with two oppositely-arranged clamping parts (3.3), a groove for accommodating the edge of the circuit board (2) is formed between the two clamping parts (3.3), and the upper part and the lower part of each jaw main body (3.4) are correspondingly provided with a protruding part (3.2), and the two convex parts (3.2) are all propped against the surface of the support plate (1), when the big head screw (5) is screwed, the big head screw (5) pulls the jaw main body (3.4) to move through the fixed block (3.1) and is limited by the positioning and resisting action of the convex parts (3.2), and the jaw main body (3.4) deforms to enable the two clamping parts (3.3) to move relatively to clamp the circuit board (2).

2. The circuit board locking mechanism of claim 1, wherein: the lug bosses (3.2) at the upper part and the lower part of the jaw main body (3.4) are symmetrically arranged, and the distance between the two lug bosses (3.2) is greater than the height of the through groove (1.1).

3. The circuit board locking mechanism of claim 1, wherein: each circuit board (2) is fixed through four locking structures, and the four locking structures are symmetrically arranged on the two supporting plates (1).

4. The circuit board locking mechanism of claim 1, wherein: the jaw main body (3.4) is made of high-strength stainless steel.

5. The circuit board locking mechanism of claim 1, wherein: the supporting plate (1) is fixed on the bottom plate (4) through screws.

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