Snap spring riveting structure

Abstract

The utility model discloses a clamp spring riveting structure, which comprises a shell and a binding post arranged on the shell, the binding post is partially positioned outside the shell, the other part of the binding post extends into the shell, the clamp spring riveting structure is further provided with a fastener matched with the binding post, and the fastener comprises a clamp spring with a conical bowl-shaped structure. The diameter of an upper hole of the clamping spring is larger than that of a lower hole of the clamping spring, the lower hole of the clamping spring is matched with the diameter of the binding post, the binding post is sleeved with the clamping spring, and after the clamping spring is riveted, the inner wall of the lower hole is in interference fit with the outer wall of the binding post. The inner hole wall at the lower end of the clamp spring is in interference fit with the outer wall of the binding post, and random disassembly and assembly are avoided through gradual clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of power switches, in particular to a clip riveting structure. Background Art

[0002] An electromagnetic switch, as the name suggests, is a switch controlled by an electromagnet—a combination of an electromagnet and a switch. When the electromagnet coil is energized, it generates electromagnetic attraction, pushing or pulling the movable core to close the switch contacts, thereby connecting the controlled circuit. Electromagnetic switches are widely used across various industries, most commonly as contactors in the industrial field. Electromagnetic power switches are also currently the most common type of power switch in automobiles. The terminal (threaded stud) of a bistable electromagnetic switch was originally secured to a conductive plate (washer) by a nut, or secured to the housing by a nut. This was costly and could be mistaken for a nut by customers, creating the risk of unauthorized disassembly. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a clamping spring riveting structure.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a retaining spring riveting structure, comprising a shell, a terminal arranged on the shell, wherein the terminal is partially located outside the shell and the other part extends into the shell, and a fastener cooperating with the terminal is also provided, the fastener comprising a retaining spring with a conical bowl-shaped structure, the upper hole diameter of the retaining spring is larger than the lower hole diameter of the retaining spring and the lower hole of the retaining spring is adapted to the diameter of the terminal, the retaining spring is sleeved outside the terminal and after the retaining spring is riveted, the inner wall of the lower hole is interference fit with the outer wall of the terminal.

[0005] As a preferred technical solution of the present invention, the outer wall of the terminal is provided with an external thread, and the thickness of the inner wall of the lower hole of the retaining spring is adapted to the depth of the screw groove formed by the external thread of the terminal.

[0006] As a preferred technical solution of the present invention, the upper hole of the retaining spring is a tapered hole, and the diameter of the tapered hole gradually decreases from top to bottom, and the lower hole of the retaining spring is a cylindrical hole.

[0007] As a preferred technical solution of the present invention, a groove is provided on the inner wall of the lower hole of the retaining spring.

[0008] As a preferred technical solution of the present invention, the groove passes through the retaining spring in the axial direction and a sharp point is formed where the left and right sides of the bottom of the groove connect with the bottom edge of the lower hole.

[0009] As a preferred technical solution of the present invention, the pointed point is inserted into the screw groove when the retaining spring is riveted.

[0010] As a preferred technical solution of the present invention, there are at least two grooves, and the two grooves are symmetrically arranged on the inner hole wall of the lower end of the retaining spring.

[0011] As a preferred technical solution of the present invention, there are at least three grooves, and the three grooves are arranged in an array on the inner hole wall of the lower end of the retaining spring.

[0012] As a preferred technical solution of the present invention, there are two binding posts which are symmetrically arranged on the housing.

[0013] As a preferred technical solution of the present invention, a plastic blocking piece is provided on the housing and is located between the two terminal posts.

[0014] In summary, the beneficial effects of the present invention are:

[0015] The retaining spring adopts a conical bowl-shaped structure, and the assembly method is flanging and riveting, so that the inner wall of the lower hole of the retaining spring and the outer wall of the terminal have an interference fit, and are gradually tightened to avoid arbitrary disassembly and assembly.

[0016] A groove is provided on the inner wall of the lower hole of the retaining spring to reserve space for riveting. When the retaining spring is riveted, the left and right sides of the groove deviate inward, and the sharp point formed between the bottom edge of the inner wall of the lower hole and the two sides of the bottom of the groove eats into the thread surface (i.e., it is stuck in the screw groove), thereby firmly clamping the thread. The thickness of the inner wall of the lower hole of the retaining spring is adapted to the screw groove, thereby replacing the function of the nut to fix the terminal or conductive sheet (gasket). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the retaining spring in the present invention;

[0019] Figure 3 This is a structural diagram of the utility model's retaining spring before riveting;

[0020] Figure 4 It is a structural schematic diagram of the utility model after the retaining spring is riveted.

[0021] Figure numerals: 1. housing; 2. terminal; 3. retaining spring; 4. upper hole; 5. lower hole; 6. screw groove; 7. conical hole; 8. cylindrical hole; 9. groove; 10. sharp point; 11. conductive sheet; 12. plastic baffle. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0023] The specific embodiments of the present utility model are described below with reference to the accompanying drawings.

[0024] like Figure 1-4 The illustrated embodiment shows a spring riveting structure, comprising a housing 1, a terminal 2 arranged on the housing 1, wherein the terminal 2 is partially located outside the housing and the other part extends into the housing, and a fastener cooperating with the terminal 2 is further provided, the fastener comprising a spring 3 with a conical bowl-shaped structure, the diameter of the upper hole 4 of the spring 3 being larger than the diameter of the lower hole 5 of the spring 3 and the lower hole 5 of the spring 3 being adapted to the diameter of the terminal 2, the spring 3 being sleeved on the outside of the terminal 2 and after the spring 3 is riveted, the inner wall of the lower hole 5 is interference fit with the outer wall of the terminal 2, the spring 3 riveted structure in this embodiment is preferably applied to a bistable switch, and the structure for realizing the basic function of the bistable switch is prior art, so it is not specifically described. The main purpose of this application is to provide a spring 3 riveting structure that can be sleeved on the terminal 2 The conductive sheet 13 or gasket is pressed against the shell 1, or the part of the terminal 2 located inside the shell is tightened while the outer end of the terminal 2 is fixed. Usually, the inner end of the terminal 2 will have a limiting structure that abuts against the inner wall of the shell 1. In this embodiment, the retaining spring 3 is a stamping part, which undergoes plastic deformation during riveting. The present application can achieve the same purpose by adjusting the material and size of the retaining spring 3, such as: according to the thread pitch adjustment, the coarse tooth gasket can be thickened, the larger the stud, the larger the lower hole 5 can also be, and materials with good elongation can be used, such as: brass, copper, aluminum plate, etc. In the actual riveting process, the upper end of the flange part of the retaining spring 3 will be flattened. Of course, only a part can be pressed down, not completely flattened, and it is only necessary to ensure that the inner wall of the lower hole 5 can be interference fit with the terminal 2.

[0025] The retaining spring 3 with a conical bowl-shaped structure is assembled by flanging and riveting, so that the inner wall of the lower hole 5 of the retaining spring 3 and the outer wall of the terminal 2 have an interference fit, and are gradually clamped to prevent arbitrary disassembly.

[0026] The outer wall of the terminal 2 is provided with external threads, and the thickness of the inner wall of the lower hole 5 of the retaining spring 3 is adapted to the depth of the screw groove 6 formed by the external threads of the terminal 2. In this embodiment, the upper hole 4 of the retaining spring 3 is preferably a tapered hole 7 with a diameter that gradually decreases from top to bottom, and the lower hole 5 of the retaining spring 3 is preferably a cylindrical hole 8.

[0027] A groove 9 is provided on the inner wall of the lower hole 5 of the retaining spring 3. The groove 9 penetrates the retaining spring 3 in the axial direction and a sharp point 10 is formed at the junction of the left and right sides of the bottom of the groove 9 and the bottom edge of the lower hole 5. The sharp point 10 is stuck in the screw groove 6 when the retaining spring 3 is riveted. The inner wall of the lower hole 5 of the retaining spring 3 is provided with a groove 9 to reserve a position space for riveting. When the retaining spring 3 is riveted, the left and right sides of the groove 9 are offset inward, and the sharp point 10 formed between the bottom edge of the inner wall of the lower hole 5 and the two sides of the bottom of the groove 9 eats into the thread surface (that is, it is stuck in the screw groove 6), thereby firmly clamping the thread. The thickness of the inner wall of the lower hole 5 of the retaining spring 3 is adapted to the screw groove 6, thereby replacing the function of the nut to fix the terminal 2 or the conductive sheet 13 (gasket).

[0028] There are at least two grooves 9 symmetrically arranged on the inner wall of the lower end of the retaining spring 3 ; or, there are at least three grooves 9 arranged in an array on the inner wall of the lower end of the retaining spring 3 .

[0029] Two binding posts 2 are provided and symmetrically arranged on the housing 1 . A plastic blocking piece 12 is provided on the housing 1 and located between the two binding posts 2 .

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention as claimed, and the scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A circlip riveting structure, comprising a housing (1), a terminal (2) disposed on the housing (1), wherein the terminal (2) is partially located outside the housing and the other portion extends into the housing, and a fastener is provided for cooperating with the terminal (2), characterized in that: The fastener comprises a retaining spring (3) with a conical bowl-shaped structure, the diameter of the upper hole (4) of the retaining spring (3) is larger than the diameter of the lower hole (5) of the retaining spring (3), and the lower hole (5) of the retaining spring (3) is adapted to the diameter of the terminal (2), the retaining spring (3) is sleeved outside the terminal (2), and after the retaining spring (3) is riveted, the inner wall of the lower hole (5) and the outer wall of the terminal (2) are interference-fitted.

2. The circlip riveting structure according to claim 1, characterized in that: The outer wall of the terminal post (2) is provided with an external thread, and the thickness of the inner wall of the lower hole (5) of the clamping spring (3) is adapted to the depth of the screw groove (6) formed by the external thread of the terminal post (2).

3. The circlip riveting structure according to claim 2, characterized in that: The upper hole (4) of the clamping spring (3) is a tapered hole (7) and the diameter of the tapered hole (7) gradually decreases from top to bottom. The lower hole (5) of the clamping spring (3) is a cylindrical hole (8).

4. The circlip riveting structure according to claim 2 or 3, characterized in that: The inner wall of the lower hole (5) of the clamping spring (3) is provided with a groove (9).

5. The circlip riveting structure according to claim 4, characterized in that: The groove (9) penetrates the clamping spring (3) in the axial direction, and a sharp point (10) is formed at the junction of the left and right sides of the bottom of the groove (9) and the bottom edge of the lower hole (5).

6. The circlip riveting structure according to claim 5, characterized in that: The pointed point (10) is inserted into the screw groove (6) when the clamping spring (3) is riveted.

7. The circlip riveting structure according to claim 5, characterized in that: At least two grooves (9) are provided, and the two grooves (9) are symmetrically arranged on the inner hole wall of the lower end of the clamping spring (3).

8. The circlip riveting structure according to claim 5, characterized in that: At least three grooves (9) are provided, and the three grooves (9) are arranged in an array on the inner hole wall of the lower end of the clamping spring (3).

9. The clip riveting structure according to claim 1, characterized in that: Two terminal posts (2) are provided and are symmetrically arranged on the housing (1).

10. The circlip riveting structure according to claim 9, characterized in that: The housing (1) is provided with a plastic baffle (12) located between the two terminal posts (2).

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