CN-224234001-U - Power supply shell

Abstract

The utility model provides a power supply shell, which comprises XY-direction rigid limit rib plates extending inwards from side walls, an XY-direction elastic limit mechanism and a Z-direction limit mechanism, wherein the XY-direction elastic limit mechanism is a cantilever extending from the bottom surface of the shell and parallel to the side walls, the Z-direction limit mechanism is a buckle arranged on a pair of cantilevers, the clamping surface of the buckle is used for limiting the movement freedom degree of the upper surface of the circuit board in the Z direction, and the cantilever is in interference fit with the circuit board and is formed through deformation of the cantilever. Compared with the prior art, the power supply shell is provided with the group of elastic limiting mechanisms, and the elastic limiting mechanisms are of cantilever structures, so that the cantilevers can deform during interference fit, and the problem of impact caused by back and forth shaking of a circuit board in the shell due to the existence of an assembly gap is solved.

Inventors

• MO YUHANG
• LI JING
• LI GENGWU

Assignees

• 广州金升阳科技有限公司

Dates

Publication Date

20260512

Application Date

20250430

Claims (6)

1. 1. A power supply shell comprises an XY-direction rigid limit rib plate extending inwards from a side wall and used for supporting and protecting a circuit board, and is characterized by also comprising an XY-direction elastic limit mechanism and a Z-direction limit mechanism, The elastic limiting mechanism in the XY direction is a cantilever which extends out from the bottom surface of the shell and is parallel to the side wall; The Z-direction limiting mechanism is a buckle arranged on the pair of cantilevers, and the clamping surface of the buckle is used for limiting the degree of freedom of movement of the upper surface of the circuit board in the Z direction; the cantilever is in interference fit with the circuit board and is formed through deformation of the cantilever.
2. 2. The power supply housing according to claim 1, wherein the cantilever in the housing is of a laminar structure, and is disposed in front of the side wall and within the front end position of the rigid limiting rib, so as to continuously maintain contact positioning of all the circuit boards within dimensional tolerance by deformation of the cantilever, so as to avoid rattling caused by the clearance.
3. 3. The power supply housing according to claim 1, wherein the cantilever arm in the housing is an inverted U-shaped lamellar structure.
4. 4. The power supply housing according to claim 1, wherein the cantilever arms in the housing are arranged on three sides.
5. 5. The power supply housing according to claim 4, wherein the cantilever in the housing employs a three-point elastic limit structure for forming a flexible fit for all assembled states within a dimensional tolerance of the circuit board by elastic deformation of three points.
6. 6. The power supply housing according to claim 1, wherein the cantilever arm is located at a height above the limit height of the circuit board.

Description

Power supply shell Technical Field The present disclosure relates to electronic devices, and particularly to a power supply. Background In the design of electronic products, a power supply housing is generally used for supporting and protecting a circuit board, and a common connection mode between the housing and the circuit board is screw fixation or limiting of a limiting groove. When the plastic shell is fixed by using the screw, the nut is generally required to be inlaid, the cost is high, the shell is easy to damage when the self-tapping screw is used for disassembly, and the time required by the screw fixation is often more. Therefore, a limiting groove is used for limiting in most cases. Fig. 1 is a schematic diagram of an existing power supply housing, and the circuit board is limited by means of two sets of limiting grooves, namely an upper set, a lower set, a left set and a right set. Referring to fig. 2, in the part production process, the sizes of the parts are often not completely consistent, and dimensional deviations, that is, dimensional tolerances, exist between different parts, so a gap 4 inevitably exists between the circuit board and the housing. Therefore, the limiting groove is limited by matching with the glue dispensing mode to prevent the circuit board 2 from shaking in the shell 1. Therefore, additional glue material cost and glue dispensing man-hour cost are required to be added, and if a power supply product needs reworking or maintenance, the existence of the glue can make the disassembly of the circuit board difficult, and even the circuit board is damaged in the disassembly process. Therefore, the utility model provides a novel power supply shell which does not need to be fixed by dispensing. Disclosure of utility model The utility model aims to overcome the problems of long working time and difficult reworking and maintenance in the prior art. In order to achieve the above object, the present utility model provides the following technical solutions: the power supply shell comprises XY-direction rigid limit rib plates extending inwards from the side walls and used for supporting and protecting a circuit board, and also comprises XY-direction elastic limit mechanisms and Z-direction limit mechanisms, wherein the XY-direction elastic limit mechanisms are cantilevers extending from the bottom surface of the shell and parallel to the side walls, the Z-direction limit mechanisms are buckles arranged on the pair of cantilevers, the buckling surfaces of the buckles are used for limiting the movement freedom degree of the upper surface of the circuit board in the Z direction, and the cantilevers are in interference fit with the circuit board and are formed through deformation of the cantilevers. Preferably, the cantilever in the shell is of a lamellar structure, is arranged in front of the side wall and in the front end position of the rigid limiting rib plate, and is used for continuously keeping contact and positioning with all circuit boards in dimensional tolerance through deformation of the cantilever so as to avoid shaking caused by a gap. Preferably, the cantilever in the shell is of an inverted U-shaped lamellar structure. Preferably, the method comprises the steps of, Preferably, the cantilever in the housing is arranged on three sides. Preferably, the cantilever in the shell adopts a three-point elastic limiting structure, so as to form flexible fit of all assembly states within the dimensional tolerance of the circuit board through elastic deformation of three points. Preferably, the cantilever in the shell is higher than the limit height of the circuit board. The power supply shell has the beneficial effects that: 1. The limiting rib plate group of the power supply shell is of a rigid limiting structure and is in clearance fit with the circuit board, the situation that the assembly cannot be carried out due to interference is avoided, meanwhile, the range of a clearance value is set to coincide with a tolerance zone, the circuit board can only move in a small range, the cantilever group is of an elastic limiting mechanism, the elastic limiting mechanism and the circuit board are in interference fit, and due to the fact that the elastic limiting mechanism is of a cantilever structure, the cantilever can deform during interference fit, therefore the tolerance is absorbed, and smooth assembly of the circuit board into the shell is guaranteed. Therefore, the problems of impact caused by the fact that the circuit board shakes back and forth in the shell due to the existence of an assembly gap, device damage and abnormal sound caused by the impact and the like are solved. 2. The power supply shell fills the gap of the rigid limiting structure by adding the elastic limiting mechanism, and dispensing fixation is not needed, so that the circuit board is easier to assemble and disassemble during maintenance of a power supply product. Drawings FIG. 1 is a perspective view of a prior