Quick fixing structure for PCB (Printed Circuit Board)

Abstract

The utility model discloses a quick fixing structure for a PCB (Printed Circuit Board), which is characterized in that a mounting part for accommodating the PCB is arranged in a lower shell, and two opposite side edges of the mounting part are respectively provided with a flange and an elastic baffle tongue; the flange and the elastic blocking tongue limit movement of the PCB in the first direction and prevent the PCB from disengaging along the installation path. The structure comprises an installation part in the lower shell, and an elastic blocking tongue and a flange are arranged on the two sides of the installation part respectively. And the flange is slightly higher than the mounting part, so that the front end of the PCB can be inserted below the flange. The elastic blocking tongue comprises an elastic arm and a buckle, and the buckle is provided with an inclined surface, so that the PCB is easy to press in but difficult to come off. When the button is assembled, the buckle is extruded by applying 5-8N force, the elastic arm deforms, the PCB falls into the installation part and is fixed, the elastic blocking tongue and the flange are matched to limit the PCB to move in the first direction, the structure can particularly shorten the assembly time of the button, and the working time is saved.

Description

Technical Field

[0001] This utility model relates to the field of xxxxx, and in particular to a PCB board quick fixing structure. Background Technology

[0002] Traditional elevator button PCBs are mostly fixed using fasteners or adhesive bonding. This results in cumbersome assembly steps, inconvenient disassembly, and high maintenance costs. For fastener installation, screws are prone to loosening after long-term use, and exposed screws also affect the aesthetics; for adhesive bonding, the glue application process is inefficient, and subsequent maintenance and disassembly are difficult. Utility Model Content

[0003] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0004] A quick-fixing structure for a PCB board includes a mounting portion for accommodating the PCB board within a lower housing. Flanges and elastic tabs are respectively provided on opposite sides of the mounting portion. The flanges and elastic tabs respectively restrict the movement of the PCB board in a first direction and prevent the PCB board from detaching along the mounting path.

[0005] Furthermore, the elastic stop tongue has an elastic arm extending toward the upper housing, and a protruding latch is provided at the end of the elastic arm. When the PCB board is installed, the elastic arm is squeezed to cause it to elastically deform and thus enter the installation part.

[0006] Furthermore, a bevel is provided on the latch.

[0007] Furthermore, a disassembly groove is provided on the lower housing, the disassembly groove being located below the elastic stop tongue, and a corresponding groove is provided at the rear end of the PCB board.

[0008] Furthermore, an operation window is provided on the lower housing, and the operation window is located on the side near the flange.

[0009] Furthermore, it also includes limiting posts disposed around the mounting location, which restrict the movement of the PCB board in the second direction.

[0010] The beneficial effects of this utility model are as follows:

[0011] This utility model provides a quick-fixing structure for PCB boards. The structure includes a mounting portion within a lower housing, with elastic tabs and flanges on either side of the mounting portion. The flanges are slightly higher than the mounting portion, allowing the front end of the PCB board to be inserted below the flanges. The elastic tabs include an elastic arm and a latch. The latch has a bevel, making it easy to press the PCB board in but difficult to remove. By applying a force of 5-8N to press the latch, the elastic arm deforms, causing the PCB board to fall into the mounting portion and be fixed. The elastic tabs and flanges cooperate to restrict the movement of the PCB board along a first direction. This structure is particularly effective in shortening button assembly time and saving labor. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 sectional view of aa.

[0015] Figure 3 yes Figure 1 A bottom view.

[0016] Figure 4 This is a schematic diagram of the assembly of this utility model with a PCB board. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0018] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0019] In the specification, when an element is described as being "on," "fixed" to, "connected" to, or "joined" to another element, the element may be directly located on, fixed to, connected to, joined to, or in contact with the other element, or there may be an intermediate element present. In the specification, the description of a feature being arranged "adjacent" to another feature may refer to a feature having a portion that overlaps with the adjacent feature or a portion located above or below the adjacent feature.

[0020] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0021] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0022] refer to Figure 1 A quick-fixing structure for a PCB board is provided, wherein a mounting part 10 for mounting a PCB board 40 is provided inside the lower housing 1, and elastic tabs 20 and flanges 12 are provided on the opposite sides of the mounting part 10. The flanges 12 are slightly higher than the mounting parts 10 so that the front end 41 of the PCB board 40 can be inserted under the flanges 12.

[0023] Reference Figure 2 The elastic stop tongue 20 has an elastic arm 21 extending towards the upper housing (not shown in the figure) and a latch 22 located at the end of the elastic arm 21 extending towards the flange 12. When one end of the PCB board 40 is inserted into the flange 12, applying a force of approximately 5-8 N to its rear end to press the latch 22 causes the elastic arm 21 to elastically deform, thereby causing the PCB board 40 to fall into the mounting portion 10 and be fixed in place. The cooperation between the elastic stop tongue 20 and the flange 12 prevents the PCB board 40 from moving in the first direction 1a when it is in the mounting portion 10. The latch 22 is also provided with a bevel 23, making it easy for the PCB board 40 to be pressed in from above but difficult to remove from below without external force.

[0024] refer to Figure 3The lower housing 1 is also provided with a disassembly groove 13 and an operation window 11. The disassembly groove 13 is located below the elastic stop tongue 20. After the PCB board 40 is installed and fixed, a tool is used to apply a force of 2-3 N.mm through the disassembly groove 13 from the bottom to press the elastic stop tongue 20 in the opposite direction so that the PCB board 40 can be removed. The operation window 11 is located on the side near the flange 12 relative to the disassembly groove 13. When disassembling with the disassembly groove 13, the PCB board 40 is pushed out from the center by hand. Preferably, the width of the disassembly groove 13 is 6mm*0.8mm.

[0025] Further reference Figure 4 Several limiting posts 30 are also provided on the side of the mounting part 10 to restrict the movement of the PCB board 40 along the second direction 1b. A groove 42 is also provided at the rear end of the PCB board 40 for the tool to operate the elastic stop tongue 20 after passing through the disassembly groove 13 through the groove 42. Preferably, there are 6 limiting posts 30, each with a height of 1mm.

[0026] This assembly and fixing method eliminates the need for the original fastener fixing structure, while the spring arm barb engagement depth reaches 0.5mm, providing a pull-out resistance of up to 15N, making it difficult to fall off.

Claims

1. A PCB board quick-fixing structure, wherein a mounting portion for accommodating the PCB board is provided within a lower housing, characterized in that, The mounting parts are provided with flanges and elastic tongues on opposite sides, respectively. The flanges and elastic tongues restrict the movement of the PCB board in the first direction and prevent the PCB board from coming off along the mounting path.

2. The PCB board quick-fixing structure as described in claim 1, characterized in that, The elastic stop tongue has an elastic arm extending toward the upper housing, and a protruding latch is provided at the end of the elastic arm. When the PCB board is installed, the elastic arm is squeezed to cause it to elastically deform and thus enter the installation part.

3. The PCB board quick-fixing structure as described in claim 2, characterized in that, A bevel is provided on the latch.

4. The PCB board quick-fixing structure as described in claim 2, characterized in that, A disassembly groove is also provided on the lower housing, which is located below the elastic stop tongue, and a corresponding groove is provided at the rear end of the PCB board.

5. The PCB board quick-fixing structure as described in claim 2, characterized in that, An operation window is also provided on the lower housing, and the operation window is located on the side near the flange.

6. A PCB board quick-fixing structure as described in any one of claims 1 to 5, characterized in that, It also includes limiting posts disposed around the mounting area, which limit the movement of the PCB board in a second direction.

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