Wiring terminal and protective cover mounting structure

Abstract

According to the wiring terminal and protective cover installation structure, the wiring terminal comprises a wiring frame, the bottom of the wiring frame is provided with a connection blocking piece, the connection blocking piece is arranged in an opening groove of a protective cover, and the connection blocking piece is connected with the protective cover through a buckle. The connection baffle sheet of the wiring terminal and the protective cover are cooperatively installed by using the buckle structure, so that the wiring terminal and the protective cover are reliably and stably installed together.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a wiring terminal and a protective cover installation structure. Background Art

[0002] Circuit breakers are used to provide indirect contact protection for personnel and prevent fire hazards caused by ground fault currents generated by damaged equipment insulation. They can also be used to distribute electrical energy and protect circuits and power equipment from overloads and short circuits. They can also be used for infrequent circuit switching and infrequent motor starting. Terminal blocks in circuit breakers secure and connect electrical conductors or busbars.

[0003] Chinese patent ZL201921662143.3 discloses a terminal block for a residual current circuit breaker, comprising a terminal screw, a terminal frame, and a protective cover. The top of the terminal frame is provided with a threaded hole for screwing in the terminal screw, and the terminal screw is used to fix the wire or busbar fed into the channel; the bottom of the terminal frame is provided with a baffle, which is embedded in the mounting groove of the protective cover and fixedly installed using a boss limiting structure. This terminal block adds a convex structure to the existing terminal block, and an insulating protective cover is designed for matching. The convex structure is used to fix and limit the insulating protective cover. However, the baffle is embedded in the mounting groove of the protective cover and is positioned by the groove wall of the mounting groove. There is a risk that the baffle will slip out of the mounting groove, resulting in an unreliable connection between the terminal block and the protective cover. Utility Model Content

[0004] The purpose of the present utility model is to provide a terminal and protective cover mounting structure to improve the mounting method of the terminal and the protective cover so that the terminal can be reliably and stably mounted together with the protective cover, in order to solve the problem that the blocking piece of the existing terminal is embedded in the mounting groove of the protective cover and positioned by the groove wall of the mounting groove, and there is a risk that the blocking piece will slip out of the mounting groove.

[0005] Technical Solution

[0006] In order to achieve the above technical objectives, the utility model provides a wiring terminal and protective cover installation structure, wherein the wiring terminal includes a wiring frame, and a connecting baffle is provided at the bottom of the wiring frame, characterized in that: the connecting baffle is placed in the opening groove of the protective cover, and the connecting baffle is connected to the protective cover with a buckle, and the buckle is located in the middle area of ​​the protective cover.

[0007] In one embodiment, the opening direction of the opening slot is parallel to the line feed direction, and the bottom surface of the opening slot is used to limit the movement of the connection terminal in the opposite direction of the line feed direction.

[0008] In one embodiment, the buckle is used to fix the connecting baffle and the protective cover so as to limit the degree of freedom of the connecting baffle in corresponding directions.

[0009] In one embodiment, the buckle includes a first buckle and a second buckle, and the first buckle and the second buckle are symmetrically arranged with respect to the center of the protective cover. There is a gap between the first buckle and the second buckle to facilitate deformation of the buckle.

[0010] In one embodiment, ribs are provided around the opening slot of the protective cover to limit the rotation of the terminal.

[0011] In one embodiment, a process hole is provided on the bottom surface of the opening groove of the protective cover for snap-on molding.

[0012] In one embodiment, the buckle is triangular-conical or cylindrical.

[0013] In one embodiment, a process groove is provided on the ribs on the bottom surface of the opening groove of the protective cover.

[0014] In one embodiment, the connecting block is provided with a avoiding notch corresponding to the buckle.

[0015] Beneficial effects

[0016] The utility model provides a terminal block and protective cover mounting structure. The terminal block includes a wiring frame, a connecting block disposed at the bottom of the wiring frame, and is positioned in an open slot of the protective cover. The connecting block is connected to the protective cover by a snap fastener, and the snap fastener is located in the middle region of the protective cover. The snap fastener structure allows the connecting block of the terminal block to be installed in conjunction with the protective cover, ensuring reliable and stable installation of the terminal block to the protective cover. Furthermore, the snap fastener is located in the middle region of the protective cover, reducing the number of snap fasteners and, in turn, the number of corresponding slots on the protective cover, thereby reducing the difficulty of machining the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Attachment Figure 1 This is a schematic diagram of the installation structure of the wiring terminal and the protective cover in Example 1 of the present utility model;

[0019] Attachment Figure 2 This is a front view of the installation of the terminal block and the protective cover in Example 1 of the present utility model;

[0020] Attachment Figure 3 This is a rear view of the wiring terminals and protective cover in Example 1 of the present utility model after installation;

[0021] Attachment Figure 4 This is a schematic diagram of the protective cover structure in Example 1 of the present utility model. Figure 1 ;

[0022] Attachment Figure 5 This is a schematic diagram of the protective cover structure in Example 1 of the present utility model. Figure 2 ;

[0023] Attachment Figure 6 This is a schematic diagram of the wiring terminal in Example 1 of the present utility model installed in the circuit breaker;

[0024] Attachment Figure 7 This is a schematic diagram of the installation structure of the wiring terminal and the protective cover in Example 2 of the present utility model;

[0025] Attachment Figure 8a This is a schematic diagram of the installation structure of the wiring terminal and the protective cover in Example 3 of the present utility model;

[0026] Attachment Figure 8b This is a schematic diagram of the protective cover structure in Example 3 of the present utility model. Figure 1 ;

[0027] Attachment Figure 8c This is a schematic diagram of the protective cover structure in Example 3 of the present utility model. Figure 2 ;

[0028] Attachment Figure 9 This is a schematic diagram of the installation structure of the wiring terminal and the protective cover in Example 4 of the present utility model; DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise expressly specified or limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact through an intermediate medium. Furthermore, a first feature being “above,” “above,” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below,” “below,” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0034] Example 1

[0035] In the prior art, the connection terminal is embedded in the installation groove of the protective cover by a baffle and positioned by the groove wall of the installation groove. There is a risk that the baffle may slip out of the installation groove, resulting in an unreliable connection between the connection terminal and the protective cover.

[0036] In order to solve this problem, the attached Figure 1, 2 and 3, this embodiment is a wiring terminal and protective cover installation structure, the wiring terminal 1 includes a wiring frame 101, the wiring frame 101 is provided with a connecting block 101a at the bottom, the connecting block 101a is placed in the opening groove 201 of the protective cover 2, and the connecting block 101a is connected to the protective cover 2 with a buckle 3. The buckle 3 is located in the middle area of ​​the protective cover 2. The buckle is located in the middle area of ​​the protective cover, which reduces the number of buckles, thereby reducing the number of clearance slots on the protective cover corresponding to the buckle, and reducing the difficulty of processing parts. As shown in the attached Figure 1 As shown in , the direction of entry of the wires connected to the wiring terminals of the circuit breaker is the Z direction, the direction of vertical movement of the wiring screws 4 of the wiring terminals is the Y direction, and the direction perpendicular to the plane formed by the Z and Y directions is the X direction. The opening direction of the opening slot 201 is parallel to the direction of entry, and the bottom surface 201a of the opening slot 201 is used to limit the movement of the wiring terminal 1 in the opposite direction of the direction of entry. In this embodiment, the opening slot 201 of the protective cover 2 is located on one side of the wiring frame 101 and gradually closes. The buckle 3 is used to fix the connecting baffle 101a and the protective cover 2, thereby limiting the freedom of the connecting baffle 101a in the corresponding direction and preventing it from slipping. At the same time, the buckle 3 can also limit the movement of the connecting baffle 101a in the Y direction together with the gradually closing opening slot, and prevent the connecting baffle 101a from rotating around the Y direction.

[0037] More specifically, as shown in the attached Figure 4 and 5 As shown in , the buckle 3 includes a first buckle 301 and a second buckle 302. In this embodiment, the first buckle 301 and the second buckle 302 are preferably triangular pyramidal in shape. The first buckle 301 and the second buckle 302 are arranged on the bottom surface of the opening slot 201 of the protective cover 2 and are integrally formed with the protective cover 2. The bottom surface 201a of the opening slot 201 of the protective cover 2 is provided with a process hole 201a01 for forming the buckle 3. The first buckle 301 and the second buckle 302 are arranged symmetrically about the center of the protective cover 2. A gap exists between the first buckle 301 and the second buckle 302 to facilitate deformation of the buckle 3. Ribs 201b are provided around the opening slot 201 of the protective cover 2 to further restrict rotation of the terminal block 1.

[0038] This embodiment provides a terminal and protective cover installation structure, the terminal 1 includes a wiring frame 101, the bottom of the wiring frame 101 is provided with a connecting block 101a, the connecting block 101a is placed in the opening groove 201 of the protective cover 2, and the connecting block 101a is connected to the protective cover 2 with a buckle 3. Figure 6As shown, a snap-on structure is used to allow the connecting baffle of the terminal block to be installed in conjunction with the protective cover, so that the terminal block can be reliably and stably installed together with the protective cover. At the same time, the snap-on is located in the middle area of ​​the protective cover, which reduces the number of snap-ons and thereby reduces the number of clearance slots on the protective cover corresponding to the snap-on, thereby reducing the difficulty of processing the parts.

[0039] Example 2

[0040] As attached Figure 7 As shown, in this embodiment, the buckle 1 301 and the buckle 2 302 are triangular cones, and the rib 201b at the bottom of the opening groove 201 of the protective cover 2 is cancelled, so that the buckle 1 301 and the buckle 2 302 can be formed from the bottom of the opening groove 201, without the need for core pulling from the back of the protective cover. At the same time, the process hole 201a01 on the bottom surface 201a of the opening groove 201 of the protective cover 2 can also be cancelled, thereby reducing the insulation loss caused by the process groove on the back; the entire structure can also achieve the technical purpose of Example 1, and realize the reliable and stable installation of the terminal block with the protective cover.

[0041] Example 3

[0042] As attached Figure 8a As shown in Figures 8b and 8c, in this embodiment, the buckle 3 is a cylindrical buckle. The buckle 3 is directly arranged on the bottom surface of the opening groove 201 of the protective cover 2, and the process hole 201a01 on the bottom surface 201a of the opening groove 201 of the protective cover 2 is eliminated. At the same time, the rib 201b of the bottom surface 201a of the opening groove 201 of the protective cover 2 is provided with a process groove 201b01 to facilitate the molding of the buckle 3. There is no need to provide the process hole 201a01 on the bottom surface 201a of the opening groove 201 of the protective cover 2, thereby reducing the insulation loss caused by the process hole 201a01. This structure can achieve the technical purpose of Example 1 and realize the reliable and stable installation of the terminal block with the protective cover.

[0043] Example 4

[0044] As attached Figure 9 As shown, in this embodiment, the buckle 3 is a triangular pyramidal buckle. Buckle 1 301 and buckle 2 302 are directly mounted on the bottom surface of the opening slot 201 of the protective cover 2. The process hole 201a01 on the bottom surface 201a of the opening slot 201 of the protective cover 2 is eliminated. Furthermore, a process groove 201b01 is provided on the rib 201b on the bottom surface 201a of the opening slot 201 of the protective cover 2. A clearance notch 101a01 is provided on the connecting block 101a corresponding to the buckle 3. This also achieves the technical objective of Example 1, ensuring reliable and stable installation of the terminal block with the protective cover.

[0045] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A wiring terminal and protective cover mounting structure, wherein the wiring terminal (1) comprises a wiring frame (101), and a connecting baffle (101a) is provided at the bottom of the wiring frame (101), characterized in that: The connecting baffle (101a) is placed in the opening groove (201) of the protective cover (2), and the connecting baffle (101a) is connected to the protective cover (2) by a buckle (3), and the buckle (3) is located in the middle area of ​​the protective cover (2).

2. A terminal and protective cover mounting structure according to claim 1, characterized in that: The opening direction of the opening slot (201) is arranged parallel to the line feed direction, and the bottom surface (201a) of the opening slot (201) is used to limit the movement of the connection terminal (1) in the opposite direction to the line feed direction.

3. The terminal and protective cover mounting structure according to claim 1, wherein: The buckle (3) is used to fix the connecting baffle (101a) and the protective cover (2), thereby limiting the degree of freedom of the connecting baffle (101a) in the corresponding direction.

4. The terminal and protective cover mounting structure according to claim 1, wherein: The buckle (3) comprises a first buckle (301) and a second buckle (302), wherein the first buckle (301) and the second buckle (302) are symmetrically arranged around the center of the protective cover (2), and a gap exists between the first buckle (301) and the second buckle (302) to facilitate deformation of the buckle (3).

5. The terminal and protective cover mounting structure according to claim 1, wherein: Ribs (201b) are provided around the opening slot (201) of the protective cover (2) to limit the rotation of the connecting terminal (1).

6. The terminal and protective cover mounting structure according to claim 2, wherein: The bottom surface (201a) of the opening groove (201) of the protective cover (2) is provided with a process hole (201a01) for forming the buckle (3).

7. The terminal and protective cover mounting structure according to claim 4, wherein: The buckle (3) is triangular cone-shaped or cylindrical.

8. The terminal and protective cover mounting structure according to claim 2, wherein: A clearance groove (201b01) is provided on the rib (201b) of the bottom surface (201a) of the opening groove (201) of the protective cover (2).

9. The terminal and protective cover mounting structure according to claim 1, wherein: The connection blocking piece (101a) is provided with a avoiding notch (101a01) corresponding to the buckle (3).

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