Power supply shell

Abstract

The utility model provides a power supply shell, which comprises rigid limiting rib plates which extend inwards from a side wall in the XY direction and are used for supporting and protecting a circuit board, and further comprises elastic limiting mechanisms in the XY direction and a limiting mechanism in the Z direction, and the elastic limiting mechanisms in the XY direction are cantilevers which extend from the bottom surface of the shell and are vertically arranged in the side wall in parallel; the limiting mechanism in the Z direction is a buckle arranged on the pair of cantilevers, and the clamping surface of the buckle is used for limiting the moving freedom degree of the upper surface of the circuit board in the Z direction; wherein the interference fit between the cantilever and the circuit board is formed through the deformation of the cantilever. Compared with the prior art, the power supply shell provided by the utility model is provided with the group of elastic limiting mechanisms, the elastic limiting mechanisms are of cantilever structures, and cantilevers can deform during interference fit, so that the impact caused by the existence of assembly gaps and back-and-forth shaking of a circuit board in the shell of a product is solved.

Description

Technical Field

[0001] This utility model relates to the housing structure of electronic products, and more particularly to a power supply housing. Background Technology

[0002] In electronic product design, power supply housings are typically used to support and protect circuit boards. Common connection methods between the housing and the circuit board include screw fixing or locating groove positioning. When using screws to fix plastic housings, nuts are usually required, which is costly. Using self-tapping screws can easily damage the housing during disassembly and assembly, and screw fixing often requires more time. Therefore, locating groove positioning is the most common method used.

[0003] like Figure 1 The existing power supply housing design relies on two sets of limiting grooves—one on the top and one on the bottom, and the other on the left and right—to limit the movement of the circuit board. Please refer to [reference needed]. Figure 2 Because the dimensions of parts are often not perfectly consistent during the manufacturing process, and there are dimensional deviations (i.e., dimensional tolerances) between different parts, a gap 4 is unavoidable between the circuit board and the housing. Therefore, the limiting groove method needs to be combined with adhesive dispensing to prevent the circuit board 2 from shaking within the housing 1. This requires additional costs for adhesive materials and dispensing time. Moreover, if the power supply product needs rework or repair, the presence of adhesive will make circuit board disassembly difficult, and may even damage the circuit board during disassembly.

[0004] Therefore, this utility model proposes a novel power supply housing that does not require adhesive fixing. Utility Model Content

[0005] The present invention aims to overcome the problems of long working time and difficulty in rework and repair in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A power supply housing includes rigid limiting ribs extending inward from the side wall in the XY direction for supporting and protecting a circuit board. It also includes an elastic limiting mechanism in the XY direction and a limiting mechanism in the Z direction. The elastic limiting mechanism in the XY direction is a cantilever extending parallel to the side wall from the bottom surface of the housing. The limiting mechanism in the Z direction is a latch mounted on a pair of cantilever arms, the engaging surface of which limits the degree of freedom of movement of the upper surface of the circuit board in the Z direction. The interference fit between the cantilever arms and the circuit board is formed by the deformation of the cantilever arms.

[0008] Preferably, the cantilever inside the housing is a thin sheet structure, located in front of the side wall and within the front end of the rigid limiting rib, so as to maintain continuous contact and positioning with all circuit boards within the dimensional tolerance through the deformation of the cantilever, so as to avoid shaking caused by gaps.

[0009] Preferably, the cantilever within the housing is an inverted U-shaped thin-plate structure. Preferably,

[0010] Preferably, the cantilever inside the housing is disposed on three sides.

[0011] Preferably, the cantilever inside the housing adopts a three-point elastic limiting structure, which is used to form a flexible fit for all assembly states within the dimensional tolerance of the circuit board through the elastic deformation of the three points.

[0012] Preferably, the height of the cantilever inside the housing is higher than the limit height of the circuit board.

[0013] The beneficial effects of this utility model power supply housing are as follows:

[0014] 1. The limiting ribs of the power supply housing are a rigid limiting structure with a clearance fit to the circuit board, preventing assembly failure due to interference. The clearance range is set to coincide with the tolerance zone, allowing the circuit board to move only within a small range. The cantilever assembly is an elastic limiting mechanism with an interference fit to the circuit board. Because the elastic limiting mechanism is a cantilever structure, the cantilever can deform during the interference fit, absorbing the tolerance and ensuring smooth assembly of the circuit board into the housing. This solves the problems of impact caused by the circuit board wobbling back and forth inside the housing due to assembly gaps, as well as component damage and abnormal noise caused by the impact.

[0015] 2. The power supply housing fills the gap of the rigid limiting structure by adding an elastic limiting mechanism, eliminating the need for glue fixation. Therefore, it is easier to disassemble and assemble the circuit board during power supply product maintenance. Attached Figure Description

[0016] Figure 1 A perspective view of the existing power supply casing;

[0017] Figure 2 This is a schematic diagram showing the assembly effect of the existing power supply housing and circuit board;

[0018] Figure 3 This is a perspective view of the power supply housing of this utility model;

[0019] Figure 4 This is a schematic diagram showing the assembly effect of the power supply housing and circuit board of this utility model;

[0020] Figure 5 This is a schematic diagram showing the assembly effect when the power supply housing and circuit board of this utility model are too large;

[0021] Figure 6 This is a schematic diagram illustrating the assembly effect of the cantilevered power supply housing with buckle of this utility model.

[0022] The main symbols in the diagram are explained below:

[0023] 1. Shell

[0024] 2 circuit boards

[0025] 3-point colloid

[0026] 4 Assembly gaps

[0027] 11 sidewalls

[0028] 12 sidewalls

[0029] 13 sidewalls

[0030] 14 sidewalls

[0031] 15 bottom

[0032] 16-position limiting rib plate assembly

[0033] 17 Limiting Rib Group 2

[0034] 18 cantilever group 1

[0035] 19 Cantilever Group 2

[0036] 191 cantilever buckle Detailed Implementation

[0037] The present invention and its beneficial effects will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that the orientations or positional relationships indicated by terms such as "left and right," "up and down," "vertical," "parallel," "X-axis direction," "Y-axis direction," and "Z-axis direction" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. Therefore, they should not be construed as limitations on the present invention. The present invention will be described in detail below with reference to the accompanying drawings and embodiments; however, the specific embodiments of the present invention are not limited thereto.

[0038] Please see Figure 3 This is a perspective view of the power supply housing of this utility model. The power supply housing includes rigid limiting ribs 16 and 17 extending inward from the side wall in the XY direction for supporting and protecting the circuit board. It also includes an elastic limiting mechanism in the XY direction and a limiting mechanism in the Z direction. The elastic limiting mechanism in the XY direction consists of cantilever arms 18 and 19 extending from the bottom surface of the housing and standing parallel to the side wall. The limiting mechanism in the Z direction consists of a buckle 191 provided on a pair of cantilever arms. The engaging surface of the buckle 191 is used to limit the degree of freedom of movement of the upper surface of the circuit board in the Z direction. The interference fit between the cantilever arms and the circuit board is formed by the deformation of the cantilever arms.

[0039] Preferably, the cantilever arms 18 and 19 within the housing are thin-plate structures, positioned in front of the sidewalls and within the front ends of the rigid limiting ribs 16 and 17. These cantilever arms maintain continuous contact and positioning with all circuit boards within the dimensional tolerances through deformation, thus preventing wobbling caused by gaps. The cantilever arms 18 and 19 within the housing are inverted U-shaped thin-plate structures. The cantilever arms are located on three sides 12, 13, and 14. The height of the cantilever arms 18 and 19 within the housing is higher than the limiting height of the circuit boards. The cantilever arms within the housing employ a three-point elastic limiting structure, used to create a flexible fit for all gaps and / or interference fits within the dimensional tolerances of the circuit boards through elastic deformation at three points. All circuit boards within the dimensional tolerances refer to boards with all gaps and / or interference fits within the dimensional tolerances of the circuit boards.

[0040] This utility model provides a power supply housing that incorporates a set of rigid limiting mechanisms positioned vertically and horizontally within the housing. These rigid limiting mechanisms are clearance-fitted to the circuit board, preventing assembly failures due to interference. The clearance range is set to coincide with the tolerance zone, allowing the circuit board to move only within a limited area. Additionally, a set of elastic limiting mechanisms is provided vertically and horizontally. These elastic limiting mechanisms are interference-fitted to the circuit board. Because the elastic limiting mechanisms are cantilever structures, the cantilever deforms during the interference fit, absorbing tolerances and ensuring smooth assembly of the circuit board into the housing. This solves the problems of impact caused by the circuit board wobbling within the housing due to assembly gaps, as well as the resulting component damage and abnormal noise. Furthermore, since no adhesive bonding is required, the circuit board is easier to disassemble and assemble during power supply product maintenance.

[0041] Please refer to details. Figure 3 A power supply housing 1 includes a first side wall 11, a second side wall 12, a third side wall 13, a fourth side wall 14, and a bottom surface 15; the first side wall 11 is parallel to the third side wall 13, the second side wall 12 is parallel to the fourth side wall 14, the non-parallel side walls are connected to each other, and all four side walls are connected to the bottom surface 15 to form the cavity of the housing 1.

[0042] Inside the cavity, on the left and right sides, there are limiting ribs 16 connecting side wall 11 to bottom surface 15 and side wall 3 to bottom surface 15, and cantilever 18 extending from bottom surface 15 parallel to side wall 11 and side wall 3 to bottom surface 13; at the same time, inside the cavity, on the upper and lower sides, there are limiting ribs 2 17 connecting side wall 2 12 to bottom surface 15 and side wall 4 14 to bottom surface 15, and cantilever 2 19 extending from bottom surface 15 parallel to side wall 2 12 and side wall 4 to bottom surface 14.

[0043] Please see Figure 4 , Figure 4This is a schematic diagram of the assembly effect of the housing and circuit board of this utility model. The view is a front cross-sectional view. To restrict the movement of the circuit board 2 in the X-axis direction of the housing, a set of rigid limiting mechanisms—limiting rib group 16—and a set of elastic limiting mechanisms—cantilever 18—are provided in the X-axis direction. Considering the tolerance of the parts, in order to ensure that the circuit board 2 can be smoothly installed into the housing 1, the circuit board 2 and the limiting rib group 16 are in clearance contact. To solve the shaking problem caused by the clearance, preferably, a cantilever 18 is provided on the bottom surface 15. The cantilever 18 and the circuit board 2 are in interference fit. When the size of the circuit board 2 is off to the upper limit, the cantilever structure can deform well, so that the circuit board 2 can be assembled into the limiting groove. No matter how the size of the circuit board 2 changes within the set tolerance range, the cantilever can always maintain contact with the circuit board 2, thus avoiding shaking. Moreover, due to the existence of the limiting rib group, even if the circuit board 2 is subjected to a large external force, it can only move within a small range, thus ensuring that the cantilever will not break due to excessive deformation.

[0044] Preferably, in order to limit the movement of the circuit board 2 in the Y-axis direction of the housing, a set of rigid limiting mechanisms—limiting rib group 2 17—and a set of elastic limiting mechanisms—cantilever 19—are also provided in the Y-axis direction.

[0045] Preferably, to limit the movement of the circuit board 2 in the Z-axis direction of the housing, the limiting rib has a step for support, and the cantilever structure 19 has a buckle 191. When assembling the circuit board 2, the buckle 191 receives the force from the circuit board 2, and under the action of the upper chamfer, the cantilever deforms to both sides to avoid displacement. When the circuit board 2 is assembled to the predetermined position, the buckle springs back, thereby fastening the circuit board to the housing. This utility model, through a rigid limiting mechanism, an elastic limiting mechanism, and a buckle, can fix the circuit board 2 to the housing without additional glue application.

[0046] The above embodiments are only used to help understand the method and core idea of ​​this utility model. For those skilled in the art, other equivalent application schemes that can be naturally associated with the above description and examples without departing from the principle of this utility model, as well as some improvements and modifications to this utility model, all fall within the protection scope of the claims of this utility model.

Claims

1. A power supply housing, comprising rigid limiting ribs extending inward from the side wall in the XY direction for supporting and protecting a circuit board, characterized in that: It also includes elastic limiting mechanisms in the XY direction and limiting mechanisms in the Z direction. The elastic limiting mechanism in the XY direction is a cantilever that extends from the bottom surface of the housing and stands parallel to the side wall; The limiting mechanism in the Z direction is a buckle mounted on a pair of cantilever arms. The engaging surface of the buckle is used to limit the degree of freedom of movement of the upper surface of the circuit board in the Z direction. The interference fit between the cantilever and the circuit board is formed by the deformation of the cantilever.

2. The power supply housing according to claim 1, characterized in that: The cantilever inside the housing is a thin sheet structure, located in front of the side wall and within the front end of the rigid limiting rib. It is used to maintain continuous contact and positioning with all circuit boards within the dimensional tolerance through the deformation of the cantilever, so as to avoid shaking caused by gaps.

3. The power supply housing according to claim 1, characterized in that: The cantilever inside the housing is an inverted U-shaped thin sheet structure.

4. The power supply housing according to claim 1, characterized in that: The cantilever inside the housing is located on three sides.

5. The power supply housing according to claim 4, characterized in that: The cantilever inside the housing adopts a three-point elastic limiting structure, which is used to form a flexible fit for all assembly states within the dimensional tolerance of the circuit board through the elastic deformation of the three points.

6. The power supply housing according to claim 1, characterized in that: The height of the cantilever inside the housing is higher than the limit height of the circuit board.

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