A connecting structure of a moving spring of a protector

Abstract

The utility model discloses a moving spring piece connecting structure of protector, including the static foot, moving spring piece and rivet in the shell, the static foot bending is provided with the end of the bearing platform of bearing moving spring piece, the bearing platform and the end of moving spring piece all are equipped with the through -hole of rivet passing, the end of moving spring piece still extends downward and is equipped with the side wing of the side wall of bearing platform adhesion. The reliable connection of the end of moving spring piece and static foot is realized through rivet, relative to the resistance welding mode of prior art, has forgone the gasket and many step welding procedure, has simplified assembly process, has promoted production efficiency, has cancelled the gasket again, has reduced production cost and procurement cycle obviously. The utility model discloses simple structure, through the side wing and bearing platform side wall adhesion, can effectively restrict moving spring piece horizontal displacement and eliminate assembly shake, solved the hot deformation problem of moving spring piece caused by welding high temperature, greatly promoted the stress uniformity and parameter consistency of moving spring piece, avoided function failure and scrapping.

Description

Technical Field

[0001] This utility model relates to the field of compressor protectors, specifically to the moving spring connection structure of the protector. Background Technology

[0002] Compressor protectors generally employ a snap-action bimetallic structure. Core components include a housing 1A, a bimetallic strip 2A, a heating element 3A, a stationary contact 4A, a moving spring 5A, and a wiring terminal 6A. Figure 1 As shown, one end of the moving spring is fixed to the terminal block, while the other end is connected to the stationary contact. Its working principle is as follows: overload current causes the heating element to heat up rapidly, and the bimetallic strip bends in a specific direction due to the difference in thermal expansion coefficients between the two metals, driving the moving spring assembly to separate from the stationary contact, thus breaking the circuit.

[0003] Currently, the moving spring and the terminal block are connected by resistance welding. Because the moving spring is relatively thin, it needs to be pressed against the stationary foot of the terminal block using a 7A gasket for step-by-step welding. That is, the gasket is first welded to the moving spring, and then the moving spring is welded to the stationary foot. However, this method has drawbacks: during the welding discharge process, the high temperature can easily cause thermal deformation and displacement of the moving spring, resulting in uneven stress, poor parameter consistency, and even functional failure or scrapping of the moving spring. Furthermore, the gasket material must possess both high-temperature compressive strength and stability to ensure reliable pressing; its high performance requirements and reliance on imports not only significantly increase production costs but also negatively impact production efficiency due to the long procurement cycle. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and provide a moving spring connection structure for a protector that is simple in structure, reduces production costs, and improves production efficiency.

[0005] The movable spring connection structure of the protector described in this utility model includes a stationary foot, a movable spring, and a rivet disposed in the housing. The stationary foot is bent to provide a support platform for supporting the end of the movable spring. Both the support platform and the end of the movable spring are provided with through holes for the rivet to pass through. The end of the movable spring also extends downward to provide a side wing that fits against the side wall of the support platform.

[0006] The described protector's moving spring connection structure uses rivets to reliably connect the end of the moving spring to the stationary foot. Compared to the existing resistance welding method, this eliminates the need for gaskets and multiple welding steps, simplifying the assembly process, improving production efficiency, and significantly reducing production costs and procurement cycles by eliminating the gaskets. This invention has a simple structure; by fitting the side wings against the side wall of the support platform, it effectively constrains the lateral displacement of the moving spring and eliminates assembly wobbling. It solves the problem of thermal deformation of the moving spring caused by high welding temperatures, greatly improving the uniformity of force and parameter consistency of the moving spring, and preventing functional failure and scrapping.

[0007] As a preferred embodiment of this utility model, the bearing platform of the static foot is inclined upward relative to the horizontal reference surface, and the angle of inclination formed between the bearing platform and the horizontal reference surface is 3-5 degrees.

[0008] As a preferred embodiment of this utility model, one end of the moving spring is provided with a bent section adapted to the bearing platform. The bent section is inclined upward relative to the horizontal reference plane and forms an angle of 3-5 degrees with the horizontal reference plane. Attached Figure Description

[0009] Figure 1 This is an exploded schematic diagram of a compressor protector with a jump-type bimetallic structure, which is a technology in the prior art.

[0010] Figure 2 This is an exploded schematic diagram of the moving spring connection structure of a protector.

[0011] Figure 3 This is a cross-sectional view of the moving spring connection structure of a protector.

[0012] Figure 4 This is a schematic diagram of the moving spring structure of a protector. Detailed Implementation

[0013] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0014] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "equipped with," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] If the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "several" means one or more, "multiple" means two or more, and "above," "below," and "within" are all understood to include the stated number. Furthermore, the technical features of each embodiment can be arbitrarily combined. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described; however, as long as these combinations of technical features do not contradict each other, they should be considered within the scope of this specification.

[0017] like Figure 2-4 As shown, a protective device's moving spring connection structure includes a stationary foot 2, a moving spring 3, and a rivet 4 disposed within a housing 1. The stationary foot 2 is bent to form a support platform 201 that supports the end of the moving spring. Both the support platform and the end of the moving spring have through holes 5 for the rivet to pass through. The end of the moving spring 3 also extends downward to form a side wing 301 that conforms to the side wall of the support platform. This protective device's moving spring connection structure achieves a reliable connection between the end of the moving spring and the stationary foot through the rivet. Compared to the existing resistance welding method, it eliminates the need for gaskets and multiple welding steps, simplifying the assembly process, improving production efficiency, and significantly reducing production costs and procurement cycles by eliminating the gasket. This utility model has a simple structure. By having the side wing conform to the side wall of the support platform, it can effectively constrain the lateral displacement of the moving spring and eliminate assembly wobbling. It solves the problem of thermal deformation of the moving spring caused by high welding temperatures, greatly improving the uniformity of force and parameter consistency of the moving spring, and avoiding functional failure and scrap.

[0018] The bearing platform 201 of the stationary foot 2 is inclined upward relative to the horizontal reference plane 6, and the angle α formed by the bearing platform and the horizontal reference plane is 3-5 degrees. Since there is a height difference between the stationary contact point that overlaps with the moving spring and the stationary foot, the bearing platform is inclined upward at 3-5 degrees relative to the horizontal reference plane to compensate for the height difference between the stationary contact point and the stationary foot. This allows the moving spring to generate a moderate elastic preload after being fixed by the rivet, which can ensure that the contact point between the moving spring and the stationary contact maintains a stable and reliable contact pressure, effectively avoiding poor conductivity or functional failure caused by insufficient contact pressure.

[0019] Furthermore, one end of the movable spring 3 with its side wing has a bent section 302 adapted to the supporting platform. The bent section is inclined upward relative to the horizontal reference plane, and the angle β formed with the horizontal reference plane is 3-5 degrees. The movable spring has a bent section with the same inclination angle as the supporting platform. After the rivet connection is tightened, the bent section of the movable spring is in close contact with the supporting platform without generating other stress, thereby ensuring that the movable spring remains reliable after multiple operations.

[0020] The above description is merely a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the content of this specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model. In the description of this utility model, the terms "one embodiment," "some embodiments," "embodiment," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Those skilled in the art will understand, explicitly and implicitly, that, without conflict, the embodiments described herein can be combined with other embodiments, and the embodiments of this utility model and the features within those embodiments can be combined with each other.

Claims

1. A dynamic spring connection structure for a protector, characterized in that, Includes a stationary foot (2), a movable spring (3), and a rivet (4) located inside the housing (1). The stationary foot (2) is bent to provide a support platform (201) for supporting the end of the movable spring. Both the support platform and the end of the movable spring are provided with through holes (5) for the rivet to pass through. The end of the movable spring (3) also extends downward to provide a side wing (301) that fits against the side wall of the support platform.

2. The moving spring connection structure of the protector according to claim 1, characterized in that, The bearing platform (201) of the stationary foot (2) is inclined upward relative to the horizontal reference plane (6), and the angle (α) of inclination formed between the bearing platform and the horizontal reference plane is 3-5 degrees.

3. The moving spring connection structure of the protector according to claim 2, characterized in that, The moving spring (3) has a bent section (302) at one end of its side wing that is adapted to the bearing platform. The bent section is inclined upward relative to the horizontal reference surface and the angle (β) formed with the horizontal reference surface is 3-5 degrees.

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