Dense winding wire spring jack

Abstract

The invention discloses a densely wound wire spring jack, belongs to the field of electric connectors, in particular to the field of connector terminals, and aims to reduce the manufacturing cost of the wire spring jack. The densely wound wire spring jack comprises a jack base body, a wire spring wire, a wire spring bushing and an outer sleeve, wherein the wire spring bushing and the outer sleeve are respectively tubular; the jack base body comprises a base body rear end part used for wiring, a sleeve matching part matched with an outer sleeve and a spring wire matching part matched with a wire spring wire, the sleeve matching part and the spring wire matching part are respectively cylindrical, and the spring wire matching part, the sleeve matching part and the base body rear end part are sequentially connected into a whole. The invention provides a small-specification dense winding wire spring jack structure which has the advantages of being reasonable in design, ingenious in conception and low in cost. Compared with the prior art, on the premise that the strength of the jack is the same, the size of the densely-wound wire spring jack can be made smaller, and the densely-wound wire spring jack has higher adaptability and wider application range.

Description

Technical Field

[0001] The present application relates to the field of electrical connectors, in particular to the field of connector terminals, and specifically to a closely wound wire spring jack. More specifically, the present application provides a wire spring jack that can effectively simplify the volume of the jack, reduce the cost of the jack, and has high application value and good application prospects. Background Art

[0002] Commonly used densely wound spring jack structures can be divided into the following types.

[0003] The first is that the double ends of the spring wire are bent and placed on the bushing; if it is a split structure, one end of the spring wire is clamped by the gap between the inner wall of the front sleeve and the outer wall of the bushing, and the other end is clamped by the gap between the inner wall of the base sleeve and the outer wall of the bushing. The corresponding close-wound spring socket structure includes at least four structures: base, front sleeve, bushing, and spring wire; if it is an integral structure, both ends of the spring wire are clamped by the gap between the inner wall of the base and the outer wall of the bushing. The corresponding close-wound spring socket structure includes at least three structures: base, bushing, and spring wire.

[0004] The second type is that one end of the spring wire is bent and placed on the base, and the gap between the outer wall of the base and the inner wall of the front sleeve clamps the spring wire, and the other end of the spring wire is clamped by the gap between the inner sleeve after riveting and the inner wall of the base; this structure at least includes a jack base, a front sleeve, an inner sleeve, and a spring wire.

[0005] The third type is that one end of the spring wire is bent and placed on the outer wall of the base body, the gap between the inner wall of the front sleeve and the outer wall of the base body clamps the spring wire, and the bottom of the other end of the spring wire is suspended and not fixed; this structure at least includes a socket base, a front sleeve, and a spring wire.

[0006] The first structure mentioned above is the structure adopted by most small-sized densely wound wire springs on the market. Its advantages are: mature assembly process and excellent conductivity. The disadvantage is: the wall of the jack of this structure is made of copper alloy material, and the wall strength of the jack is insufficient when making thin-walled jacks. The second structure mentioned above is generally the structure adopted by large-sized wire spring jacks. Its advantages are: simple assembly process and excellent conductivity. The disadvantage is: this structure is not suitable for making small-sized wire spring jacks. The advantage of the third structure with the bottom of the spring wire suspended in the air is: fewer parts are used and the assembly is simple. The disadvantage is: since one end of the spring wire is not fixed, there is a higher risk when using it, and the conductivity is not as good as the first two structures. At the same time, the above three structures of wire spring jacks all have the problem of high electroplating costs.

[0007] In view of the above shortcomings of the current wire spring jack, it is necessary to innovate the technical solution of the terminal. Summary of the invention

[0008] The invention of the present application aims to provide a closely wound wire spring socket, which is a small-sized closely wound wire spring socket structure with the advantage of low cost. Compared with the prior art, under the premise of the same socket strength, the closely wound wire spring socket of the present application can make the socket smaller in size, has higher adaptability and wider application range.

[0009] In order to achieve the above purpose, this application adopts the following technical solutions: A densely wound wire spring jack, comprising a jack base, a wire spring wire, a wire spring bushing, and an outer sleeve, wherein the wire spring bushing and the outer sleeve are respectively in a tubular shape; The jack base includes a base rear end portion for wiring, a sleeve fitting portion fitting with the outer sleeve, and a spring wire fitting portion fitting with the wire spring wire, wherein the sleeve fitting portion and the spring wire fitting portion are cylindrical respectively, and the spring wire fitting portion, the sleeve fitting portion, and the base rear end portion are sequentially connected as a whole; The end of the wire spring bushing close to the opening of the densely wound wire spring insertion hole is recorded as the first connection end, and the end of the wire spring bushing away from the opening of the densely wound wire spring insertion hole is recorded as the second connection end; One end of the wire spring wire is bent and placed on the first connecting end of the wire spring bushing, the wire spring wire is arranged along the inner wall of the wire spring bushing, and one end of the wire spring wire extends backward relative to the second connecting end of the wire spring bushing and is placed on the spring wire matching portion; The end of the spring wire bent and placed on the first connecting end of the spring bushing is recorded as the first end of the spring wire, and the other end of the spring wire placed on the spring wire matching part is recorded as the second end of the spring wire; The outer sleeve is arranged on the outside of the wire spring bushing, and the first end of the spring wire is clamped and fixed by the wire spring bushing and the outer sleeve, and the second end of the spring wire is clamped and fixed by the spring wire matching part of the jack base and the outer sleeve. The sleeve matching part of the jack base is interference fit with the outer sleeve to achieve relative fixation of the outer sleeve and the jack base.

[0010] The wire spring bushing and the outer sleeve are respectively in the shape of a circular tube.

[0011] A plurality of reinforcing ribs matching with the outer sleeve are arranged on the circumference of the outer wall of the wire spring bushing, and the reinforcing ribs are connected with the wire spring bushing as a whole.

[0012] The reinforcing rib is in a circular ring shape.

[0013] The reinforcing ribs are arranged along the axial direction of the outer sleeve.

[0014] The reinforcing rib is interference fit with the outer sleeve.

[0015] The wire spring wire is arranged obliquely relative to the central axis of the wire spring bushing.

[0016] One end of the wire spring wire is bent outward and overlapped on the first connecting end of the wire spring bushing.

[0017] The outer sleeve is made of stainless steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the densely wound spring socket in Example 1.

[0019] Figure 2 This is a cross-sectional view of the densely wound spring socket in Example 1.

[0020] Figure 3 This is a schematic diagram of the structure of the jack base in Example 1.

[0021] Figure 4 This is a schematic diagram of the assembly structure of the jack base, wire spring bushing and wire spring wire in Example 1.

[0022] Figure 5 This is a structural schematic diagram of a partial cross-section of the outer sleeve after the densely wound wire spring socket in Example 1 is assembled.

[0023] Figure 6 Exploded view of the assembly of the densely wound spring socket in Example 1, Figure 6 The direction indicated by the arrow is the assembly direction.

[0024] Markings in the figure: 1, jack base, 2, outer sleeve, 3, wire spring bushing, 4, wire spring wire, 5, rear end of base, 6, sleeve matching part, 7, spring wire matching part, 8, first end of spring wire, 9, second end of spring wire, 10, reinforcing rib. DETAILED DESCRIPTION

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0027] Example 1 As shown in the figure, this embodiment provides a closely wound wire spring jack, which is a small-sized wire spring jack, including a jack base, a wire spring wire, a wire spring bushing, and an outer sleeve, wherein the wire spring bushing and the outer sleeve are respectively in the shape of a round tube. Among them, the jack base includes a base rear end portion for wiring, a sleeve matching portion matching with the outer sleeve, and a spring wire matching portion matching with the wire spring wire, wherein the sleeve matching portion and the spring wire matching portion are respectively in the shape of a cylinder, and the spring wire matching portion, the sleeve matching portion, and the base rear end portion are sequentially connected as a whole.

[0028] The end of the wire spring bushing close to the mouth of the densely wound wire spring insertion hole is recorded as the first connection end, and the end of the wire spring bushing away from the mouth of the densely wound wire spring insertion hole is recorded as the second connection end. One end of the wire spring wire is bent and placed on the first connection end of the wire spring bushing, and the wire spring wire is arranged along the inner wall of the wire spring bushing. One end of the wire spring wire extends backward relative to the second connection end of the wire spring bushing and is placed on the spring wire matching part. Furthermore, a plurality of reinforcing ribs matching with the outer sleeve are arranged on the outer wall of the wire spring bushing in the circumferential direction, and the reinforcing ribs are connected to the wire spring bushing as a whole. As shown in the figure, the reinforcing ribs are in a circular shape, and the reinforcing ribs are arranged along the axial direction of the outer sleeve.

[0029] The end of the wire spring that is bent and placed on the first connection end of the wire spring bushing is recorded as the first end of the wire spring, and the other end of the wire spring that is placed on the spring wire matching portion is recorded as the second end of the wire spring. The outer sleeve is sleeved on the outside of the wire spring bushing, the first end of the spring wire is clamped and fixed by the wire spring bushing and the outer sleeve, the second end of the spring wire is clamped and fixed by the spring wire matching portion of the jack base and the outer sleeve, and the sleeve matching portion of the jack base is interference-fitted with the outer sleeve to achieve relative fixation of the outer sleeve and the jack base (that is, the sleeve matching portion of the jack base is interference-fitted with the outer sleeve to achieve assembly of the outer sleeve and the jack base).

[0030] In this structure, the outer sleeve and the jack base are relatively fixed by the interference fit between the sleeve fitting part of the jack base and the outer sleeve; the mutual fixation between the wire spring bushing, the first end of the spring wire, the sleeve fitting part of the jack base, the second end of the spring wire and the outer sleeve is achieved by the cooperation between the wire spring bushing, the wire spring wire and the outer sleeve.

[0031] Furthermore, the reinforcing rib is interference-fitted with the outer sleeve, the wire spring wire is arranged obliquely relative to the central axis of the wire spring bushing, and the outer sleeve is made of stainless steel material.

[0032] In the existing wire spring socket, the socket wall at the spring wire is usually made of copper alloy material, and the hollow wall is part of the base body, which uses the socket wall to provide external support. In the present application, the outer sleeve plays the role of external support, that is, in the newly designed densely wound wire spring socket of the present application, the outer wall of the socket of the wire spring wire (i.e., the outer sleeve) is completely made of stainless steel material, which ensures the strength of the socket wall while making the wall thickness thinner, which makes it possible to further reduce the volume of the densely wound wire spring socket.

[0033] In the existing wire spring jacks, one end of the jack base will have an inner diameter structure for assembling the wire spring wire on the inner wall of the jack base (that is, the front end of the existing jack base must have an inner diameter structure for wrapping the wire spring wire). In the present application, the newly designed jack base has no inner diameter structure at one end close to the wire spring wire, so that the wire spring wire wraps the spring wire mating part of the jack base. Based on the improved structure, the present application can reduce processing costs, reduce the surface area of ​​the jack base, and lower the electroplating cost. Specifically, compared with the surface area of ​​existing jack bases of the same specification, the jack base without an inner diameter structure used in the present application has a smaller electroplating area and a lower electroplating cost; at the same time, because the front end of the jack base does not require a processing hole, the processing difficulty and processing cost will be lower.

[0034] In the densely wound wire spring jack of the present application, the fixing method of one end of the wire spring wire near the mouth of the densely wound wire spring jack is consistent with the fixing method of the wire spring wire of the existing wire spring jack, the wire spring wire is bent and placed on the wire spring bushing, and the wire spring wire is clamped through the gap between the inner wall of the outer sleeve and the outer wall of the wire spring bushing; the fixing method of one end of the wire spring wire away from the mouth of the densely wound wire spring jack is an innovative design structure of the present application, specifically: the end of the wire spring wire away from the mouth does not need to be bent and placed on the wire spring bushing, but the wire spring wire is clamped through the gap between the inner wall of the outer sleeve and the outer wall of the sleeve matching part; in this structure, since the wire spring wire is in direct contact with the spring wire matching part of the jack base, the conductive performance is met, and the outer wall of the densely wound wire spring jack can be made of stainless steel outer sleeve to fully cover the wire spring wire. In this structure, the front end of the jack base adopts a stepped cylindrical design, and different needs are met through the rear end of the base, the sleeve matching part, and the spring wire matching part; each part uses an interference fit method to ensure the connection strength between the parts. In the present application, the socket wall of the densely wound wire spring socket is the entire stainless steel sleeve wall (that is, the outer sleeve is made of a stainless steel tube), and the main body that realizes the socket function is wrapped inside the outer sleeve. The connection strength between the outer sleeve and the socket base is very important. Under extreme use conditions, when the interference fit strength between the outer sleeve and the socket base is insufficient, the connection strength between the outer sleeve and the socket base can be increased by spot riveting at the tail of the outer sleeve.

[0035] The orientation of each component, the number and position of each component, the material type, and the surface treatment described in the above embodiments are intended to describe the parameters of certain embodiments and are not restrictive. For example, the above embodiments (and / or other aspects) can be used in combination with each other.

[0036] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A densely wound spring jack, characterized in that: It includes a socket base, a wire spring wire, a wire spring bushing, and an outer sleeve, wherein the wire spring bushing and the outer sleeve are respectively in a tubular shape; The jack base includes a base rear end portion for wiring, a sleeve fitting portion fitting with the outer sleeve, and a spring wire fitting portion fitting with the wire spring wire, wherein the sleeve fitting portion and the spring wire fitting portion are cylindrical respectively, and the spring wire fitting portion, the sleeve fitting portion, and the base rear end portion are sequentially connected as a whole; The end of the wire spring bushing close to the opening of the densely wound wire spring insertion hole is recorded as the first connection end, and the end of the wire spring bushing away from the opening of the densely wound wire spring insertion hole is recorded as the second connection end; One end of the wire spring wire is bent and placed on the first connecting end of the wire spring bushing, the wire spring wire is arranged along the inner wall of the wire spring bushing, and one end of the wire spring wire extends backward relative to the second connecting end of the wire spring bushing and is placed on the spring wire matching portion; The end of the spring wire bent and placed on the first connecting end of the spring bushing is recorded as the first end of the spring wire, and the other end of the spring wire placed on the spring wire matching part is recorded as the second end of the spring wire; The outer sleeve is arranged on the outside of the wire spring bushing, and the first end of the spring wire is clamped and fixed by the wire spring bushing and the outer sleeve, and the second end of the spring wire is clamped and fixed by the spring wire matching part of the jack base and the outer sleeve. The sleeve matching part of the jack base is interference fit with the outer sleeve to achieve relative fixation of the outer sleeve and the jack base.

2. The densely wound wire spring jack according to claim 1, characterized in that: The wire spring bushing and the outer sleeve are respectively in the shape of a circular tube.

3. The densely wound wire spring jack according to claim 1, characterized in that: A plurality of reinforcing ribs matching with the outer sleeve are arranged on the circumference of the outer wall of the wire spring bushing, and the reinforcing ribs are connected with the wire spring bushing as a whole.

4. The densely wound wire spring jack according to claim 3, characterized in that: The reinforcing rib is in a circular ring shape.

5. The densely wound wire spring jack according to claim 3, characterized in that: The reinforcing ribs are arranged along the axial direction of the outer sleeve.

6. The densely wound wire spring jack according to claim 3, characterized in that: The reinforcing rib is interference fit with the outer sleeve.

7. The densely wound wire spring jack according to any one of claims 1 to 6, characterized in that: The wire spring wire is arranged obliquely relative to the central axis of the wire spring bushing.

8. The densely wound wire spring jack according to claim 1, characterized in that: One end of the wire spring wire is bent outward and overlapped on the first connecting end of the wire spring bushing.

9. The densely wound wire spring jack according to any one of claims 1 to 8, characterized in that: The outer sleeve is made of stainless steel.

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