Contact piece of electric connector and electric connector

Abstract

The utility model belongs to the field of electric connectors, and particularly relates to a contact piece of an electric connector and the electric connector, the contact piece comprises a substrate, a wiring terminal and a free terminal, the upper end of the wiring terminal is fixedly connected with the substrate, the lower end of the free terminal is fixedly connected with the substrate, and an included angle is formed between the free terminal and the substrate. The number of the free terminals is at least two, a certain interval is arranged between the free terminals, the included angles between the free terminals and the substrate are the same or different, one side of each free terminal, close to the upper end, is fixedly provided with a contact, and the contact is arranged in a protruding manner relative to the surface of each free terminal. The at least two free terminals are arranged on the contact piece, each free terminal can freely swing relative to the substrate, mutual interference and mutual influence are avoided, even if one free terminal is bent and deformed, the other free terminals can still keep the conductive effect, and the overall service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of electrical connectors, and particularly relates to a contact piece of an electrical connector and an electrical connector. Background Art

[0002] At present, the existing electric kettle structure or a tea tray equipped with an electric kettle adopts an electrical connector. As disclosed in Patent CN201610973220.1, it includes an upper connection base and a lower connection base. The upper connection base is used to be fixed at the bottom of the electric kettle. The lower connection base is separately arranged from the upper connection base and the lower connection base is connected to the power supply. The upper connection base and the lower connection base are mutually matched plug-in conductive components. Specifically, a plurality of concentric annular metal sheets are arranged on the upper connection base, and a plurality of elastic contact pieces are arranged on the lower connection base. When the upper connection base and the lower connection base form a plug-in fit, the elastic contact pieces elastically abut against the annular metal sheets of the upper connection base to form a stable electrical connection, so that the upper connection base is electrified and then heated. At present, there are still the following problems in this structure: The upper connection base and the lower connection base need to experience the plugging process more frequently. The elastic contact pieces are constantly abutted and deformed - reset. After long-term use, they are prone to bending, resulting in the electric kettle being unable to be heated normally and affecting the service life. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a contact piece of an electrical connector and an electrical connector.

[0004] The technical solution adopted by the utility model is as follows: A contact piece of an electrical connector includes a base piece, a wiring terminal, and a free terminal. The upper end of the wiring terminal is fixedly connected to the base piece. The lower end of the free terminal is fixedly connected to the base piece. An included angle is formed between the free terminal and the base piece. There are at least two free terminals and a certain interval is provided between the free terminals. The included angles between the free terminals and the base piece are the same or different. A contact point is fixedly arranged at a position near the upper end on one side of the free terminal. The contact point protrudes from the surface of the free terminal.

[0005] The base piece, the wiring terminal, and the free terminal are integrally formed or separately arranged.

[0006] The contact point is separately arranged from the free terminal and is fixed on the free terminal by riveting.

[0007] The contact surface of the contact point is a smooth arc surface.

[0008] The included angle between the free terminal and the base piece is 60° - 120°.

[0009] An electrical connector including the contact piece of the electrical connector as described above, comprising a lower connector base, the lower connector base including a base body, a plurality of concentric isolation rings are provided on the base body, an insertion slot is formed between adjacent isolation rings, an installation groove is formed on the isolation ring, the substrate is fixed to the bottom of the base body, and the free terminal extends into the installation groove and at least part of the contact point is located in the insertion slot.

[0010] A limiting slot is provided at the upper end of the installation groove, a limiting piece is provided at the upper end of the free terminal, and the limiting slot and the limiting piece cooperate to form a limit for the swinging movement of the upper end of the free terminal.

[0011] A limiting block is provided on one side of the base body corresponding to the free terminal where the contact point is located.

[0012] There are at least a pair of contact pieces of the electrical connector as above, and the positions of a pair of contact pieces relative to the center of the base body are set at 180±10° and the orientations of the contact points are opposite.

[0013] The beneficial effects of the present utility model are as follows: By providing at least two free terminals on the contact piece, each free terminal can swing freely relative to the substrate respectively, without interfering with each other and without affecting each other. Even if one of the free terminals is bent and deformed, the remaining free terminals can still maintain the conductive function, improving the overall service life. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, obtaining other drawings based on these drawings without creative efforts still belongs to the scope of the present utility model.

[0015] Figure 1 It is a schematic structural diagram of the contact piece in Embodiment 1 of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the contact piece in Embodiment 2 of the present utility model;

[0017] Figure 3 It is an exploded view of the contact piece in Embodiment 2 of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the lower connector base in Embodiment 3 of the present utility model;

[0019] Figure 5 It is a schematic structural diagram of the base body in Embodiment 3 of the present utility model;

[0020] Figure 6 It is a schematic diagram of the connection structure between the contact piece and the base body in Embodiment 3 of the present utility model;

[0021] Figure 7 This is a schematic diagram of the conductive structure in the lower connecting seat in Embodiment 3 of the present utility model;

[0022] In the figure, there are contact piece - 1, substrate - 101, wiring terminal - 102, free terminal - 103, contact point - 104, limiting piece - 105, connecting piece - 106, seat body - 2, concentric isolation ring - 3, installation groove - 4, limiting groove - 5, and limiting block - 6. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] It should be noted that all expressions using "first" and "second" in the embodiments of the present utility model are for distinguishing two entities or parameters with the same name but different, so "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be elaborated one by one in subsequent embodiments.

[0025] The terms of direction and position mentioned in the present utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only with reference to the direction or position of the accompanying drawings. Therefore, the terms of direction and position used are for explaining and understanding the present utility model, rather than a limitation on the protection scope of the present utility model.

[0026] Embodiment 1:

[0027] A contact piece 1 of an electrical connector, as Figure 1 shown, includes a substrate 101, a wiring terminal 102, and a free terminal 103. The upper end of the wiring terminal 102 is fixedly connected to the substrate 101, the lower end of the free terminal 103 is fixedly connected to the substrate 101, an included angle is formed between the free terminal 103 and the substrate 101, at least two free terminals 103 are provided and there is a certain interval between the free terminals 103, a contact point 104 is fixedly arranged at a position near the upper end on one side of the free terminal 103, and the contact point 104 protrudes from the surface of the free terminal 103. In the figure, two free terminals 103 are provided. The substrate 101 of the contact piece 1 is for fixing, the lower end of the free terminal 103 is fixed on the substrate 101 as a fixed end, and the upper end is used as a free end. The free terminal 103 can elastically swing around the fixed end, and the swinging of the two free terminals 103 does not interfere with each other and does not affect each other. When one of the free terminals 103 is bent and deformed, the other free terminal 103 can still be used as a conductive contact, improving the overall service life. More free terminals 103 can also be provided.

[0028] Figure 1The substrate 101, the terminal 102, and the free terminal 103 shown are integrally formed.

[0029] The contact 104 is separately provided from the free terminal 103 and is fixed to the free terminal 103 by riveting. The contact 104 and the free terminal 103 can be made of different materials. As an electrical contact member, the contact 104 has relatively high performance requirements such as wear resistance, resistance to welding, and contact resistance. For other parts of the contact piece 1, namely the substrate 101, the terminal 102, and the free terminal 103, the requirements are relatively low, which can save costs.

[0030] The contact surface of the contact 104 is a smooth arc surface. This reduces the resistance during contact.

[0031] The included angle between the free terminal 103 and the substrate 101 is 60° - 120°. The substrate 101 is usually installed horizontally. The included angle between the free terminal 103 and the substrate 101 affects the position of the free terminal 103 after installation. The included angle between the free terminal 103 and the substrate 101 can be close to 90°, that is, after installation, the free terminal 103 is arranged close to vertically, or the free terminal 103 can be installed with the contact 104 slightly inclined outwards, increasing the elastic deformation amount and the elastic abutting force.

[0032] The included angles between the two free terminals 103 and the substrate 101 can be the same, that is, when leaving the factory, the preset elastic deformation amounts of the two free terminals 103 are the same, or the included angles between the two free terminals 103 and the substrate 101 can be different, and when leaving the factory, the preset elastic deformation amounts of the two free terminals 103 are different.

[0033] Embodiment 2:

[0034] The structure of this embodiment is basically the same as that of Embodiment 1. The main difference is that the substrate 101, the terminal 102, and the free terminal 103 in this embodiment are separately provided. Figure 2 、 Figure 3 The following shows a structure of this embodiment. Among them, the lower ends of the free terminals 103 are connected together by a connecting piece 106, the substrate 101 and the terminal 102 are connected together, and the connecting piece 106 is separately provided from the substrate 101 and is fixed by punching and riveting, or can also be fixed by bolts.

[0035] Embodiment 3:

[0036] An electrical connector including the contact piece of the electrical connector as described above includes an upper connecting seat and a lower connecting seat, as Figures 4 - 7As shown, the lower connector base includes a base body 2, and a plurality of concentric isolation rings 3 are provided on the base body 2. An insertion slot is formed between adjacent isolation rings 3. An installation groove 4 is formed on the isolation ring 3. The substrate 101 is fixed to the bottom of the base body 2. The free terminal 103 extends into the installation groove 4 and the contact 104 is at least partially located in the insertion slot.

[0037] Further, as Figure 6 shown, a limiting slot 5 is provided at the upper end of the installation groove 4, and a limiting piece 105 is provided at the upper end of the free terminal 103. The limiting slot 5 and the limiting piece 105 cooperate to form a limit for the swinging movement of the upper end of the free terminal 103.

[0038] A limiting block 6 is provided on one side of the base body 2 corresponding to the contact 104 of the free terminal 103.

[0039] As Figure 1 or as Figures 2 - 3 shown, the electrical connector has at least one pair of contact pieces. The positions of a pair of contact pieces relative to the center of the base body 2 are set at 180 ± 10°, and the orientations of the contacts 104 are opposite. As Figure 7 shown, in this embodiment, the conductive structure in the lower connector base includes 6 contact pieces. Among them, as Figure 1 or as Figures 2 - 3 shown, the electrical connector has 5 contact pieces. Among them, the four contact pieces A - D are grouped in pairs. Specifically, contact piece A and contact piece C form a pair. Their positions relative to the center of the base body 2 are close to 180°, and the orientations of the contacts 104 are opposite. Contact piece B and contact piece D form another pair. This paired arrangement of contact pieces can make the elastic force distribution more balanced when the upper connector base is inserted into the lower connector base, avoiding problems such as eccentricity, misalignment, and poor contact during connection.

[0040] The above - disclosed are only the preferred embodiments of the present utility model. Of course, the scope of the rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A contact piece of an electrical connector, comprising a substrate (101), a connection terminal (102), and a free terminal (103), wherein the upper end of the connection terminal (102) is fixedly connected to the substrate (101), the lower end of the free terminal (103) is fixedly connected to the substrate (101), and an angle is formed between the free terminal (103) and the substrate (101), characterized in that: At least two free terminals (103) are provided and a certain interval is provided between the free terminals (103); the angles between the free terminals (103) and the substrate (101) are the same or different; a contact point (104) is fixed on one side of the free terminal (103) near the upper end; the contact point (104) is provided in a raised position relative to the surface of the free terminal (103).

2. The contact piece of the electrical connector according to claim 1, characterized in that: The substrate (101), the connection terminal (102), and the free terminal (103) are integrally formed or separately arranged.

3. The contact piece of the electrical connector according to claim 1, characterized in that: The contact (104) is arranged separately from the free terminal (103) and is fixed on the free terminal (103) by riveting.

4. The contact piece of the electrical connector according to claim 1, characterized in that: The contact surface of the contact point (104) is a smooth arc surface.

5. The contact piece of the electrical connector according to claim 1, characterized in that: The included angle between the free terminal (103) and the substrate (101) is 60°-120°.

6. An electrical connector comprising a contact piece of the electrical connector according to any one of claims 1 to 5, comprising a lower connection seat, the lower connection seat comprising a seat body (2), characterized in that: The seat body (2) is provided with a plurality of concentric isolation rings (3), and a plug-in groove is formed between adjacent isolation rings (3). The isolation rings (3) are provided with a mounting groove (4). The substrate (101) is fixed to the bottom of the seat body (2), and the free terminal (103) extends into the mounting groove (4) and the contact (104) is at least partially located in the plug-in groove.

7. The electrical connector according to claim 6, characterized in that: A limiting groove (5) is provided at the upper end of the installation groove (4), and a limiting piece (105) is provided at the upper end of the free terminal (103); the limiting groove (5) and the limiting piece (105) cooperate to form a limit for the swinging movement of the upper end of the free terminal (103).

8. The electrical connector according to claim 6, characterized in that: A limiting block (6) is provided on one side of the seat body (2) corresponding to the free terminal (103) on which the contact point (104) is provided.

9. The electrical connector according to claim 6, characterized in that: The electrical connector according to any one of claims 1 to 5 is provided with at least one pair of contacts, wherein the pair of contacts are arranged at an angle of 180±10° relative to the center of the seat body (2) and the contact points (104) are arranged in opposite directions.

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