A wool button that is easy to install and anti-detachment

Abstract

The present invention relates to a plush button that is easy to install and anti-detachment, including a plush button body. The plush button body is arranged in a columnar shape with an elliptical cross-section; the major axis of the cross-section of the plush button body is in interference fit with the hole wall of the installation hole to ensure sufficient fixity of the plush button body in the installation hole; the minor axis of the cross-section of the plush button body has a clearance fit with the hole wall, leaving enough deformation space for the axial compression of the plush button body. When the end face of the plush button body is stressed and compressed, the plush button body has a certain degree of axial contraction and sliding in the installation hole, and when the end face stress is released, the plush button body has a certain degree of axial elongation and sliding in the installation hole and can return to the natural state. Since the major axis of the cross-section of the plush button body is in interference fit with the hole wall, the plush button body will not fall off from the installation hole under the natural state. This application has the advantages of simple fixing method, few parts, and not easy to fall off.

Description

Technical Field

[0001] The present invention belongs to the field of electrical technology, and particularly relates to a plush button that is easy to install and prevent from falling off. Background Art

[0002] As a special connecting element, the plush button body can achieve axial elastic compression deformation when axially compressed, and then form elastic contact with the pressing surface, so it can achieve vertical solderless interconnection of products between plates. Based on this characteristic, the plush button body and the plush button body are favored by many users in the electrical field.

[0003] At present, there are mainly two application forms of the plush button body. The first is the through-hole insertion type. As Figure 1 shown, the plush button body includes an insulator 2. An installation hole 3 that penetrates the plush button body along the up and down directions is provided on the insulator 2. A plush button body 1 is provided in the installation hole 3. The upper end of the plush button body 1 protrudes from the upper surface of the insulator for contact conduction with the pad 5 on the upper printed circuit board 4. The lower end of the plush button body protrudes from the lower surface of the insulator for contact conduction with the pad on the lower printed circuit board 6. The plush button body and the installation hole are in clearance fit. During installation, the installation hole 3 on the plush button body 1 and the insulator 2 are designed to be in a small clearance fit. The insulator 2 is first fixed in contact with the lower printed circuit board 6, and then the plush button body 1 is successively inserted into the installation hole 3. Finally, the upper printed circuit board 4 is installed downward and pressed against the insulator 2, so that the pad 5 on the printed circuit board forms elastic contact with the end face of the plush button body 3. However, the above technical solution requires the customer to install the plush button body one by one during use, that is, part of the work is transferred to the client during use. When the number of channels is large, it is extremely inconvenient for the customer to use, affecting the customer experience. At the same time, when the multi-channel plush button body needs to be disassembled, it is necessary to first remove all the plush button bodies 1 one by one and then remove the insulator 2, which is rather troublesome. The second is the two-end clamping type. As Figure 2 shown, the upper and lower ends of the plush button body 1 do not protrude from the upper and lower surfaces of the insulator 2. Upper fixing caps 7 and lower fixing caps 8 are respectively provided at both ends of the plush button body 1. That is, the plush button body is clamped in the installation hole 3 on the insulator 2 by the upper fixing cap 7 (metal hard needle) and the lower fixing cap 8 (metal hard needle). This method can protect the plush button body and thus improve the service life of the plush button body. However, in this technical solution, the number of parts is large, and there are two more fixing caps in the height direction, resulting in a large installation space and unable to meet the application requirements of low profile. Summary of the Invention

[0004] The present invention has the advantages of simple fixing method, few parts, easy installation and disassembly. At the same time, the present invention can achieve low profile and miniaturization, and requires less space.

[0005] To solve the problems in the above-mentioned background art, the present invention is realized through the following technical solutions:

[0006] A wool button that is easy to install and anti-detachment, including a wool button body, characterized in that: the wool button body is arranged in a columnar shape with an elliptical cross-section; the long axis of the cross-section of the wool button body and the hole wall of the installation hole are in interference fit.

[0007] As a further setting of the invention: the short axis of the cross-section of the wool button body and the hole wall of the installation hole are in clearance fit.

[0008] As a further setting of the invention: the long axis of the cross-section of the wool button body is at least 1.1 times the short axis.

[0009] As a further setting of the invention: the metal wool button body is a beryllium bronze wire wool button or a tungsten molybdenum alloy wire wool button.

[0010] Compared with the prior art, the present invention has the following beneficial technical effects:

[0011] 1. During installation, the long axis of the cross-section of the wool button body and the hole wall are in interference fit to ensure sufficient fixation of the wool button body in the installation hole; the short axis of the cross-section of the wool button body and the hole wall are in clearance fit, leaving enough deformation space for the axial compression of the wool button body. When the end face of the wool button body is stressed and compressed, the wool button body has a certain degree of axial contraction and sliding in the installation hole, and when the end face stress is released, the wool button body has a certain degree of axial elongation and sliding in the installation hole and can return to the natural state. Since the long axis of the cross-section of the wool button body and the hole wall are in interference fit, the wool button body will not fall off from the installation hole under natural conditions, thus achieving a simple fixing method with few parts and being not easy to fall off.

[0012] 2. During assembly, the wool button body can be directly manually inserted into the installation hole, or a special tool with a diameter slightly smaller than the installation hole diameter can be used to press and guide the wool button body into the installation hole on the insulator while applying pressure. When disassembling or replacing the wool button body, a pair of tweezers of appropriate size can be used to clamp one end of the wool button body to pull out the wool button body, or a thin rod of appropriate size can be used to push out the wool button body from the installation hole. In this way, the installation is not only simple but also easy to disassemble.

[0013] 3. The structure of the wool button body is simple, which can achieve miniaturization, low profile, and dense arrangement, requires a small installation space, and meets the application requirements of low profile, improving the applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the background art of the present invention;

[0015] Figure 2Schematic diagram of the background art of the present invention;

[0016] Figure 3 Top view structural diagram of the present invention;

[0017] Figure 4 Front view structural diagram of the present invention.

[0018] Explanation of reference numerals

[0019] 1. Fuzzy button body; 2. Insulator; 3. Mounting hole; 4. Upper printed circuit board; 5. Pad; 6. Lower printed circuit board; 7. Upper fixing cap; 8. Lower fixing cap. Detailed implementation manner

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0021] As Figures 1-4 shown, a fuzzy button that is convenient to install and prevent from falling off includes a fuzzy button body 1. The fuzzy button body 1 is arranged in a columnar shape with an elliptical cross-section, and the major axis of the cross-section of the fuzzy button body 1 is at least 1.1 times the minor axis. And the major axis of the cross-section of the fuzzy button body 1 is in interference fit with the hole wall of the mounting hole 3 to ensure sufficient fixity of the fuzzy button body 1 in the mounting hole 3; the minor axis of the cross-section of the fuzzy button body 1 is in clearance fit with the hole wall of the mounting hole 3 to leave sufficient deformation space for the axial compression of the fuzzy button body 1. In this embodiment, the mounting hole 3 is opened on the insulator 2 and extends in the vertical direction.

[0022] The mounting hole 3 can be made of metal or non-metal. Among them, the mounting hole 3 made of metal is more convenient for the fuzzy button body 1 to be grounded, and the mounting hole 3 made of non-metal can make the fuzzy button body 1 more stable and reliable in installation. At the same time, it can avoid generating metal debris in the mounting hole 3 and falling onto the circuit during the process of installing or disassembling the fuzzy button body 1, resulting in faults such as short circuits.

[0023] The fuzzy button body 1 is wound by elastic metal wire. Among them, the metal fuzzy button body is a beryllium bronze wire fuzzy button or a tungsten molybdenum alloy wire fuzzy button body, that is, the fuzzy button body can be wound by beryllium bronze wire or tungsten molybdenum alloy wire or other alloy wires.

[0024] The working principle of the present invention is as follows: During assembly, the wool button body 1 can be directly inserted into the mounting hole 3 by hand, or a special tooling with a diameter slightly smaller than that of the mounting hole 3 can be used to press and guide the wool button body 1 into the mounting hole 3 on the insulator 2 while applying pressure. When disassembling or replacing the wool button body 1, a pair of tweezers of appropriate size can be used to clamp one end of the wool button body 1 and pull it out, or a thin rod of appropriate size can be used to push the wool button body 1 out of the mounting hole 3; Since the major axis of the cross-section of the wool button body 1 has an interference fit with the hole wall to ensure that the wool button body 1 has sufficient fixity in the mounting hole 3; the minor axis of the cross-section of the wool button body 1 has a clearance fit with the hole wall, leaving enough deformation space for the axial compression of the wool button body 1. When the end face of the wool button body 1 is subjected to compressive force, the wool button body 1 has a certain degree of axial contraction and sliding in the mounting hole 3, and when the compressive force on the end face is released, the wool button body 1 has a certain degree of axial elongation and sliding in the mounting hole 3 and can return to its natural state. Since the major axis of the cross-section of the wool button body 1 has an interference fit with the hole wall, the wool button body 1 will not fall out of the mounting hole 3 in its natural state, thus achieving a simple fixing method with few parts and not being easily detached. When in transit, without damaging the wool button body 1, the placement method of the wool button body 1 during packaging is not restricted and can be placed horizontally or laterally, without worrying about the wool button body 1 falling out of the mounting hole 3.

[0025] The above-described embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential addition or replacement made by those skilled in the art based on the technical features of the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wool button that is easy to install and anti-detachment, comprising a wool button body (1), characterized in that: The hair button body (1) is arranged in a columnar shape with an elliptical cross-section; The major axis of the cross-section of the hair button body (1) is in interference fit with the hole wall of the mounting hole (3); The minor axis of the cross-section of the hair button body (1) is in clearance fit with the hole wall of the mounting hole (3); The major axis of the cross-section of the hair button body (1) is at least 1.1 times the minor axis; The hair button body (1) is made of elastic metal wire wound; 2. The hairy button according to claim 1, which is easy to install and prevent falling off, is characterized in that: The hair button body (1) is a beryllium bronze wire hair button or a tungsten molybdenum alloy wire hair button.

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