CN210074207U

CN210074207U - Fixed receipts of PCB board nut is riveted formula wire spring jack

Info

Publication number: CN210074207U
Application number: CN201921063676.XU
Authority: CN
Inventors: 贾快鸽; 汪蓉; 景咏咏; 张强
Original assignee: SHAANXI HUADA ELECTRICAL TECHNOLOGY Co Ltd
Current assignee: SHAANXI HUADA ELECTRICAL TECHNOLOGY Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-02-14
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a fixed rivet-receiving wire spring jack of a PCB nut, which comprises an outer sleeve connected with a PCB by M threads, an inner sleeve arranged in the outer sleeve and an elastic metal wire; the elastic metal wires are arranged at different linear included angles with the axis of the inner sleeve, and are uniformly distributed on the inner wall of the inner sleeve to form wire spring assemblies with the inner sleeve; the wire spring component is integrally installed in the outer sleeve, a circumferential rivet receiving structure is adopted at one end port of the outer sleeve, a guide hole is designed at the inserting end of the other end, the diameter phi A of the guide hole is 0.2mm larger than that of the contact element of the contact pin, the guide hole has a good centering and limiting function, the contact pin and the wire spring jack are guaranteed not to be inclined when being inserted, the inserting force is reduced, the elastic structure of the wire spring jack is protected, and the use reliability is improved. The utility model discloses realize the free loading and unloading of wire spring jack, have the contact reliable, easy maintenance, reduce part quantity, simplify assembly process, improve characteristics such as assembly efficiency, reduce cost, mechanical properties height.

Description

Fixed receipts of PCB board nut is riveted formula wire spring jack

Technical Field

The utility model relates to a connector technical field, concretely relates to fixed receipts of PCB plate nut is riveted formula wire spring jack.

Background

The wire spring jack is a highly stable and reliable contact element in a connector product due to the fact that the wire spring jack has softer insertion and extraction force, smaller contact resistance and longer mechanical life. Traditional wire spring jack comprises a plurality of parts, and the structure is complicated, needs a plurality of assembly fixtures, and the process is loaded down with trivial details, increases manufacturing cost, reduces assembly efficiency, and wire spring jack integration plays the line connection effect in the insulator usually. When a single independent wire spring jack needs to be connected with a PCB (printed circuit board) for signal transmission, the common connection mode is a dip soldering mode, but the connection mode is inconvenient for secondary disassembly, and the maintainability and the vibration resistance of the product are poor.

Disclosure of Invention

To the problem that exists among the prior art, the utility model aims to provide a formula wire spring jack is riveted to fixed receipts of PCB plate nut realizes wire spring jack free loading and unloading, has that the contact is reliable, easy maintenance, reduction part quantity, simplifies assembly process, improves characteristics such as assembly efficiency, reduce cost, mechanical properties height.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A fixed wire spring jack of a rivet receiving type of PCB nut, including adopting the outer jacket 5 of M threaded connection with PCB, inner race 3 and elastic wire 4 set up in outer jacket 5; the elastic metal wires 4 are arranged at different linear included angles with the axis of the inner sleeve 3 and are uniformly distributed on the inner wall of the inner sleeve 3 to form a wire spring assembly with the inner sleeve 3; the wire spring assembly is integrally installed in the outer sleeve 5, a circumferential rivet folding structure is adopted at one end port of the outer sleeve 5, a guide hole is formed at the other end port of the outer sleeve, and the diameter phi A of the guide hole is 0.2mm larger than that of the contact pin contact element.

The circumferential riveting structure is a circumferential axial riveting method, and an inner sleeve 3 and an elastic metal wire 4 (namely a wire spring assembly) which are arranged in an outer sleeve 5 are axially riveted. The length dimension of the outer sleeve 5 is increased by 0.3 mm-0.5 mm before riveting compared with the length dimension after riveting, the wall thickness of the riveting end of the outer sleeve 5 is generally controlled to be 0.3 mm-0.5 mm, the redundant part of the length is deformed when the tool is used for riveting, the riveting allowance is limited by the tool, so that a limit hole phi B for preventing the wire spring assembly from axially jumping out is formed on the end surface, and the diameter of the limit hole is smaller than the diameter of the excircle of the inner sleeve 3.

Compared with the prior art, the utility model discloses possess following advantage:

1) the number of parts is reduced, the structure is simple, the assembly process is simple and reliable, the production cost is reduced, and the assembly efficiency is improved.

2) A guide hole phi A (adaptive contact pin contact part diameter +0.2mm) structure is designed at the interface of the outer sleeve 5 connected by M threads, the guide hole has a good centering and limiting function, the contact pin and the wire spring jack are ensured not to be skewed when being plugged, the non-specified contact pin contact part can be prevented from being inserted, the elastic metal wire protection effect is achieved, and the service life and the service reliability of a product are improved.

3) Because this structure adopts to receive rivets connection structure, adopts 5 diameters of M threaded connection's overcoat not restricted by inherent frock (like crimping pincers), designs the M screw thread in 5 excircle departments of overcoat that adopt M threaded connection, realizes line spring jack and PCB plate nut fixed connection structure, installation easy maintenance, and mechanical properties is superior.

Drawings

Fig. 1a is a split view of a conventional wire spring jack structure.

Fig. 1b is an assembly view of a conventional wire spring receptacle structure.

Fig. 2a is the utility model discloses the fixed formula wire spring jack structure components of a whole that can function independently picture of riveting of receipts of PCB plate nut.

Fig. 2b is the utility model discloses PCB plate nut is fixed to receive and rivets formula wire spring jack structure equipment picture.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.

As shown in fig. 1a and 1b, the conventional wire spring jack structure includes four parts, a front sleeve 1, a rear sleeve 2, an inner sleeve 3, and an elastic wire 4. The structure is that the inner sleeve 3 and the elastic metal wire 4 are fixed in the front sleeve 1 and the rear sleeve 2 through a connecting structure of compression joint in the cylindrical front sleeve 1 and the cylindrical rear sleeve 2. The end connection with the PCB board is a dip soldering type. Two steps when this structure wire spring jack assembly: firstly, forming a non-coplanar linear included angle between the elastic metal wire 4 and the axis of the inner sleeve 3, and uniformly distributing the included angle on the inner wall of the inner sleeve 3 to assemble a wire spring assembly; and secondly, the wire spring assembly is arranged in the rear sleeve 2 and the front sleeve 1, and the joint of the front sleeve 1 and the rear sleeve 2 is assembled with the wire spring jack through a crimping point riveting process (see figure 1). The above-mentioned jack structure has following drawback:

1) the number of the parts is large, a plurality of assembling tools are needed, the process is complicated, the production cost is increased, and the assembling efficiency is reduced.

2) The insertion opening part has no function of preventing wrong insertion, and the elastic metal wire is easy to deform.

3) The front sleeve 1 and the rear sleeve 2 are in a crimping point riveting process structure, the operation is complex, the operability of crimping pliers and the limitation on the diameters of the front sleeve 1 and the rear sleeve 2 of the wire spring hole are considered, the front sleeve 1 and the rear sleeve 2 are required to be small in size and simple in structure, so that the fixing mode of the front sleeve 1 and the rear sleeve 2 with a PCB is generally designed into a dip soldering mode, the vibration resistance of a product is reduced, and the maintainability of the product is reduced.

As shown in fig. 2a and 2b, the fixed rivet-receiving wire spring jack of the PCB nut of the present invention comprises an outer sleeve 5 connected to a PCB by M-thread, an inner sleeve 3 disposed in the outer sleeve 5, and an elastic metal wire 4; the elastic metal wires 4 are arranged at different linear included angles with the axis of the inner sleeve 3 and are uniformly distributed on the inner wall of the inner sleeve 3 to form a wire spring assembly with the inner sleeve 3; the wire spring assembly is integrally installed in the outer sleeve 5, a circumferential riveting structure is adopted at one end port of the outer sleeve 5, a guide hole is designed at the other end port, and the diameter phi A of the guide hole is 0.2mm larger than that of the contact pin contact element.

As shown in fig. 2b, the circumferential riveting structure is a circumferential axial riveting method, and the inner sleeve 3 and the elastic metal wire 4 (i.e. the wire spring assembly) arranged in the outer sleeve 5 are axially riveted. The length dimension of the outer sleeve 5 is increased by 0.3 mm-0.5 mm before riveting compared with the length dimension after riveting, the wall thickness of the riveting end of the outer sleeve 5 is generally controlled to be 0.3 mm-0.5 mm, the excessive part of the tool is stressed and deformed during riveting, and the riveting allowance is limited by the tool, so that the dimension phi B of a limiting hole for preventing the wire spring assembly from axially jumping out is formed on the end surface, and the dimension phi B after riveting is required to be smaller than the diameter dimension of the excircle of the inner sleeve 3.

The utility model discloses fixed receipts of PCB plate nut is riveted formula wire spring jack and is divided two steps during assembly: firstly, forming a non-coplanar linear included angle between the elastic metal wire 4 and the axis of the inner sleeve 3, and uniformly distributing the included angle on the inner wall of the inner sleeve 3 to assemble a wire spring assembly; and secondly, the wire spring component is arranged in the outer sleeve 5 to complete the assembly of the wire spring jack by adopting a circumferential riveting structure.

The utility model discloses fixed receipts of PCB plate nut are riveted formula wire spring jack and are had following advantage:

2) A guide hole phi A (the diameter of the adaptive pin contact piece is plus 0.2mm) is designed at the interface of the outer sleeve 5 connected by the M threads, so that the insertion of the non-specified pin contact piece can be prevented, the function of protecting the elastic metal wire is achieved, the service life of a product is prolonged, and the service reliability is improved.

Claims

1. The utility model provides a fixed receipts of PCB plate nut is riveted formula wire spring jack which characterized in that: comprises an outer sleeve (5) which is connected with a PCB board by adopting M threads, an inner sleeve (3) which is arranged in the outer sleeve (5) and an elastic metal wire (4); the elastic metal wires (4) are arranged at different linear included angles with the axis of the inner sleeve (3) and are uniformly distributed on the inner wall of the inner sleeve (3) to form a wire spring assembly with the inner sleeve (3); the wire spring assembly is integrally installed in the outer sleeve (5), a circumferential riveting structure is adopted at one end port of the outer sleeve (5), a guide hole is designed at the other end port of the outer sleeve, and the diameter phi A of the guide hole is 0.2mm larger than that of the contact pin contact element.

2. The PCB nut fixing rivet-withdrawing type wire spring jack according to claim 1, wherein: the end opening of one end of the outer sleeve (5) adopts a circumferential riveting structure, the length of the outer sleeve (5) is longer by 0.3-0.5 mm before riveting than after riveting, the wall thickness of the riveting end of the outer sleeve (5) is controlled at 0.3-0.5 mm, a limiting hole phi B for preventing the wire spring assembly from axially jumping out is formed on the end surface, and the diameter of the limiting hole is smaller than the diameter of the excircle of the inner sleeve (3).