Torsion spring with forward-moving contact position and terminal using torsion spring

Abstract

The utility model discloses a torsion spring with a forward contact position and a terminal using the torsion spring, the torsion spring comprises a front section torsion spring and a tail section tube body which are integrated, and the central position of the front section torsion spring is a torsion spring throat diameter; the terminal comprises a hole sleeve and a wire lug, the torsion spring is arranged in the hole sleeve, the terminal further comprises a plug, and the plug fixes a tube body at the tail section of the torsion spring and the hole sleeve. According to the utility model, the position of the throat diameter of the torsion spring is moved forward, so that the plugging distance can be shortened, and the overall dimension of the connector can be reduced; in addition, the terminal hole sleeve and the wire lug are of an integrated structure, the contact times of current at the terminal part can be reduced, the contact resistance can be reduced, the current-carrying capacity can be enhanced, and the integrated structure can save the material cost and simplify the production and assembly procedures.

Description

Technical Field

[0001] The utility model belongs to the technical field of torsion springs and corresponding terminals, and particularly relates to a torsion spring with a forward-shifted contact position and a terminal using the torsion spring. Background Art

[0002] In the electronic industry, torsion springs and corresponding terminals are commonly used components. In the existing torsion spring, the throat position is located at the center of the product. The corresponding terminal consists of a hole sleeve and a wire ear. The torsion spring is located inside the hole sleeve. The torsion spring is continuously stamped from elastic copper material. The hole sleeve is machined by a lathe from a pure copper rod, and the wire ear is completed by single stamping of copper tube material. When in use, the connector is inserted into the hole sleeve and mated with the torsion spring to achieve circuit conduction.

[0003] However, since the throat diameter of the existing torsion spring is at the center of the whole product, a longer insertion distance is required when the connector is inserted into it for mating. When designing the connector, a longer insertion distance design needs to be considered, which results in a larger external dimension of the connector product and more material waste. In addition, the existing hole sleeve and wire ear of the terminal adopt a split design. After the connector is inserted, the current needs to make multiple contacts in the terminal part, which affects the current-carrying capacity. Moreover, the split structure has a higher material cost and more complicated production processes.

[0004] The information disclosed in this background art section is only for increasing the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a torsion spring with a forward-shifted contact position and a terminal using the torsion spring, so as to overcome the defects in the above-mentioned prior art.

[0006] To achieve the above purpose, the utility model provides a torsion spring with a forward-shifted contact position. The torsion spring includes an integrated front-section torsion spring and a rear-section tube body, and the center position of the front-section torsion spring is the throat diameter of the torsion spring.

[0007] Further, as a preference, a reinforcing ring is further provided at the front end of the front-section torsion spring, and the reinforcing ring, the front-section torsion spring, and the rear-section tube body are of an integrated structure.

[0008] Further, as a preference, the torsion spring is formed by stamping, curling, and then twisting beryllium copper.

[0009] The invention also provides a terminal using the above torsion spring, which includes a hole sleeve and a wire ear. The torsion spring is arranged inside the hole sleeve, and the terminal further includes a plug, and the plug fixes the rear-section tube body of the torsion spring and the hole sleeve.

[0010] Further, preferably, the inner wall of the plug is a stepped structure.

[0011] Further, preferably, the inner wall at the top of the hole sleeve is provided with a stepped structure for limiting the torsion spring.

[0012] Further, preferably, the stepped structure is completely fitted with the end face of the forced ring at the front end of the front torsion spring.

[0013] Further, preferably, the hole sleeve and the wire ear are of an integral structure.

[0014] Further, preferably, the hole sleeve and the wire ear are integrally formed by stretching a copper tube blank.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model moves the position of the throat diameter of the torsion spring forward, which can shorten the insertion distance, and further reduce the external dimensions of the connector;

[0017] The terminal of the utility model uses a plug to fix the torsion spring, with a stable structure and convenient assembly;

[0018] The inner wall at the top of the terminal hole sleeve of the utility model is provided with a stepped structure, which can further fix and limit the torsion spring through the stepped structure, and improve the stability of the structure;

[0019] The terminal hole sleeve and the wire ear of the utility model are of an integral structure, which can reduce the number of contacts of the current at the terminal part, reduce the contact resistance, enhance the current-carrying capacity, and the integral structure can save material costs and simplify the production and assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an existing torsion spring and terminal;

[0021] Figure 2 It is a schematic diagram of a torsion spring with the contact position moved forward according to the utility model;

[0022] Figure 3 It is a schematic diagram of a terminal using a torsion spring with the contact position moved forward according to the utility model;

[0023] Figure 4 It is an exploded schematic diagram of a terminal using a torsion spring with the contact position moved forward according to the utility model;

[0024] Figure 5 It is a cross-sectional view of a terminal using a torsion spring with the contact position moved forward according to the utility model;

[0025] Reference numerals: 100 - existing torsion spring, 200 - existing terminal hole sleeve, 300 - existing wire ear, 1 - torsion spring, 11 - front - section torsion spring, 12 - tail - section tube body, 13 - throat diameter of torsion spring, 14 - reinforcing ring, 2 - hole sleeve, 21 - stepped structure, 3 - wire ear, 4 - plug. Detailed implementation mode

[0026] The following will describe in detail the specific implementation mode of the present utility model, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0027] The following gives a brief overview of one or more aspects to provide a basic understanding of these aspects. This overview is not an exhaustive survey of all conceived aspects, and neither aims to identify the key or decisive elements of all aspects nor attempts to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description to follow.

[0028] The existing torsion spring and the corresponding terminal are as Figure 1 shown. In the figure, the reference numeral 100 is the existing torsion spring, 200 is the existing terminal hole sleeve, 300 is the existing wire ear. The throat diameter of the torsion spring is at the center of the product. The connector needs to be inserted for a relatively long distance to achieve mating. Therefore, when designing the connector, the external dimension of the product will be relatively large. In addition, the hole sleeve and the wire ear adopt a split - type design. After the connectors are inserted into each other, the current needs to make multiple contacts at the terminal part, which affects the current - carrying capacity. Moreover, the material cost of the split - type structure is relatively high, and the production process is more cumbersome.

[0029] As Figure 2 shown, based on the above - mentioned deficiencies of the existing technology, this embodiment provides a torsion spring with the contact position moved forward. The torsion spring 1 includes an integral front - section torsion spring 11 and a tail - section tube body 12. The center position of the front - section torsion spring is the throat diameter 13 of the torsion spring.

[0030] In this embodiment, as a specific solution, a reinforcing ring 14 is further provided at the front end of the front - section torsion spring 11. The reinforcing ring 14, the front - section torsion spring 11, and the tail - section tube body 12 are of an integral structure. The design of this reinforcing ring 14 can, on the one hand, improve the structural stability of the front - section torsion spring 11, and on the other hand, it is also more convenient to assemble into the terminal.

[0031] In this embodiment, as a specific solution, the torsion spring 1 is formed by stamping and coiling beryllium copper and then twisting.

[0032] In this embodiment, the position of the throat diameter 13 of the torsion spring has moved forward and is no longer at the middle position of the entire product. In this way, when the connector is inserted, the connector can be mated with the torsion spring by inserting a relatively short distance, which can reduce the external dimension of the connector and save material costs.

[0033] As shown Figures 3 - 5 in the figure, this embodiment provides a terminal using the torsion spring described in Embodiment 1, including a hole sleeve 2 and a wire ear 3. The torsion spring 1 is arranged inside the hole sleeve 2. The terminal further includes a plug 4, and the plug 4 fixes the tail section tube body 12 of the torsion spring to the hole sleeve 2. More specifically, a mortise and tenon fixing method is adopted between the plug 4 and the hole sleeve 2.

[0034] In this embodiment, as a specific solution, the inner wall of the plug 4 is a stepped structure. This structure is more convenient to operate when taking and placing the plug 4.

[0035] In this embodiment, as a specific solution, a stepped structure 21 is provided on the inner wall of the top of the hole sleeve 2, and the stepped structure 21 is used to limit the torsion spring 1.

[0036] More specifically, the stepped structure 21 is completely attached to the end face of the forced ring 14 at the front end of the front section torsion spring 11. After the torsion spring 11 is assembled into the hole sleeve 2, the top is limited by the stepped structure 21, and the bottom is fixed by the plug, so that the overall structure is more stable and firm.

[0037] [[ID=1Q]]In this embodiment, as a specific solution, the hole sleeve 2 and the wire ear 3 are of an integral structure. More specifically, the hole sleeve 2 and the wire ear 3 are integrally formed by stretching a copper tube material. When current is transmitted inside the terminal, the number of times of contact between components will be reduced compared with the split design, so that the contact resistance can be reduced and the current-carrying capacity of the product can be enhanced. In addition, the integral design is also more convenient for production and processing, can save costs, and simplifies assembly.

[0038] The foregoing description of specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A torsion spring with a forward-shifted contact position, characterized in that: The torsion spring includes an integral front-section torsion spring and a tail-section tube body. The central position of the front-section torsion spring is the throat diameter of the torsion spring. An intensifying ring is further provided at the front end of the front-section torsion spring. The intensifying ring, the front-section torsion spring, and the tail-section tube body are of an integral structure. The torsion spring is formed by stamping, coiling, and then twisting beryllium copper.

2. A terminal using the torsion spring with the contact position shifted forward as claimed in claim 1, characterized in that: It includes a hole sleeve and a wire ear. The torsion spring is arranged in the hole sleeve. The terminal further includes a plug, and the plug fixes the tail-section tube body of the torsion spring to the hole sleeve.

3. The terminal using a torsion spring with a forward-shifted contact position according to claim 2, characterized in that: The inner wall of the plug is of a stepped structure.

4. The terminal using a torsion spring with a forward-shifted contact position according to claim 2, characterized in that: The inner wall at the top of the hole sleeve is provided with a stepped structure, and the stepped structure is used for limiting the torsion spring.

5. The terminal using a torsion spring with a forward-shifted contact position according to claim 4, characterized in that: The stepped structure is completely fitted with the end face of the intensifying ring at the front end of the front-section torsion spring.

6. The terminal of a torsion spring using a forward-shifted contact position according to claim 2, characterized in that: The hole sleeve and the wire ear are of an integral structure.

7. The terminal of a torsion spring using forward movement of the contact position according to claim 6, characterized in that: The hole sleeve and the wire ear are integrally formed by stretching a copper tube blank.

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