Circuit breaker terminal connecting bar
By designing the structure of the terminal and connecting columns of the rectangular or square cross section, the problem of the metal wiring width is too width to cause difficulty inserting into the plastic shell circuit breaker, and achieve the effect of facilitating insertion and effective fixing wires.
Patent Information
- Application Number
- CN202421168974.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-27
AI Technical Summary
In the prior art, the width of the metal wiring row is too wide, making it difficult to insert into the plastic case circuit breaker.
The terminal connection row of the circuit breaker is designed, and its wiring lines are rectangular or square, and the connection column is set between connecting the body and the wiring row. The inner wall of the slot is against.
On the basis of not affecting the conductivity, it is convenient for the metal connection to insert into the plastic shell cutter, and it can effectively fix the wires through the design of the connector and bolts to avoid loosening.
Smart Images
Figure CN222421836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker terminal connection row. Background Art
[0002] The molded case circuit breaker is a key component in the power distribution system, used for overload, short circuit and undervoltage protection of lines and electrical equipment. The terminal blocks in the molded case circuit breaker are used for the electrical connection between the cables of the distribution system and the low-voltage circuit breaker. Its structure determines whether the connection between the cables of the distribution system and the low-voltage circuit breaker is reliable and whether the installation is convenient and efficient. In the prior art, the terminal blocks of the molded case circuit breaker are connected to a metal terminal block. However, in order to ensure good conductivity, the width of the metal terminal blocks on the market is generally set too wide, which makes it difficult to insert the metal terminal block into the molded case circuit breaker when connecting the terminal blocks of the molded case circuit breaker to the metal terminal block. Utility Model Content
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the width of the metal terminal block is set too wide, which makes it difficult to insert the metal terminal block into the molded case circuit breaker, thereby providing a circuit breaker terminal connection block that is convenient for the metal connection block to be inserted into the molded case circuit breaker without affecting the conductivity.
[0004] To this end, the utility model provides a circuit breaker terminal connection row, a connection groove is provided on the molded case circuit breaker, a terminal post is provided in the connection groove, the terminal connection row can be inserted into the connection groove and connected with the terminal post, the terminal connection row comprises a connection body and a terminal row arranged at the end of the connection body and used for inserting into the connection groove, the cross-section of the terminal row is rectangular or square, a connection post is provided between the connection body and the terminal row, and the diameter of the connection post is smaller than the width of the terminal row.
[0005] Furthermore: the connection body and the wiring block are integrally formed, the connection body is hollow inside, and a receiving cavity for inserting a wire is formed on a side facing away from the wiring block.
[0006] Further: the outer end surface of the connection body is provided with a crimping surface for crimping by an external mold.
[0007] Further: the outer end surface of the connecting body is provided with at least one bolt, and the bolt can be inserted into the accommodating cavity to contact the wire.
[0008] Furthermore: the terminal block is provided with a circular hole for the terminal post to pass through, and an elastic gasket is also provided between the terminal post and the terminal block.
[0009] Further: a flat washer is arranged below the elastic washer.
[0010] Further: a guiding arc surface for guiding the wire into the accommodating cavity is provided at the opening of the accommodating cavity.
[0011] The technical solution of the utility model has the following advantages:
[0012] 1. The utility model provides a circuit breaker terminal connection row, the cross-section of the terminal row is set to be rectangular or square, when wiring, the terminal row is inserted into the connection slot, and can be adapted to the shape of the connection slot, and when the perimeter is fixed, the area of the square is the largest (the shape of the terminal row in the prior art is mostly set to be semicircular), so the shape of the terminal row is preferably set to be square, so that on the basis of convenient insertion into the connection slot, the area of the terminal row can be expanded to the maximum extent while controlling the width of the terminal row, so that the metal terminal row is conveniently inserted into the molded case circuit breaker without affecting the conductivity, and a connecting column is provided between the connecting body and the terminal row, and the diameter of the connecting column is smaller than the width of the terminal row, so that when the terminal row is inserted into the connection slot, there can be a gap between the connecting column and the inner wall of the connection slot, so as to prevent the width of the connecting column from being too wide, resulting in the connection The inner wall of the connection slot is pressed against when inserted into the connection slot, making it difficult to insert the terminal row into the connection slot.
[0013] 2. The utility model provides a circuit breaker terminal connection row, in which the connection body and the terminal row are integrally formed, and the accommodating cavity of the connection body can be used for inserting a wire to form conductivity. In order to allow the wire to be fixed with the accommodating cavity after being inserted into the accommodating cavity, an external crimping mold is used to crimp the crimping surface on the outer surface of the connection body, so that the crimping surface can be deformed inward to form a hexagonal groove shape, so that the surface of the connection body squeezes the wire, so that the wire can be fixed in the accommodating cavity. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the connection structure between the molded case circuit breaker and the connection bar;
[0016] Figure 2 for Figure 1 A magnified view of the local structure;
[0017] Figure 3 It is a schematic diagram of the cross-sectional structure between the molded case circuit breaker and the connecting bar;
[0018] Figure 4 It is a schematic diagram of the connection structure between the connection bar and the terminal;
[0019] Figure 5 The cross-sectional structure diagram of the connecting row adapted to the bolts.
[0020] Description of reference numerals:
[0021] 1. Connection groove; 2. Terminal post; 3. Connection body; 31. Bolt; 4. Terminal block; 41. Circular hole; 5. Connection post; 6. Accommodating cavity; 61. Guide arc surface; 7. Elastic washer; 8. Flat washer; 9. Crimping surface. DETAILED DESCRIPTION
[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0026] Example
[0027] The present embodiment provides a circuit breaker terminal connection row, wherein a connection slot 1 is provided on a molded case circuit breaker, wherein a terminal post 2 is provided in the connection slot 1, wherein the terminal connection row can be inserted into the connection slot 1 and connected to the terminal post 2, wherein the terminal connection row comprises a connection body 3 and a terminal block 4 provided at an end of the connection body 3 and used for being inserted into the connection slot 1, wherein the cross section of the terminal block 4 is a rectangle or a square, wherein a connection post 5 is provided between the connection body 3 and the terminal block 4, wherein the diameter of the connection post 5 is smaller than the width of the terminal block 4.
[0028] The above specific improvements are: Figure 1-Figure 3 As shown, compared with the prior art, the cross-section of the terminal block 4 is set to a rectangle or a square. When wiring is performed, the terminal block 4 is inserted into the connecting slot 1 and can be adapted to the shape of the connecting slot 1. When the perimeter is fixed, the area of the square is the largest (the shape of the terminal block 4 in the prior art is mostly set to a semicircle). Therefore, the shape of the terminal block 4 is preferably set to a square. In this way, on the basis of convenient insertion into the connecting slot 1, the area of the terminal block 4 can be expanded to the maximum extent while controlling the width of the terminal block, thereby facilitating the insertion of the metal terminal block into the molded case circuit breaker without affecting the conductivity. A connecting column 5 is provided between the connecting body 3 and the terminal block 4. The diameter of the connecting column 5 is smaller than the width of the terminal block 4. Therefore, when the terminal block 4 is inserted into the connecting slot 1, there can be a gap between the connecting column 5 and the inner wall of the connecting slot 1, thereby preventing the width of the connecting column 5 from being too wide, resulting in the connection The inner wall of the connecting slot 1 is pressed against when the terminal block 4 is inserted into the connecting slot 1, making it difficult to insert the terminal block 4 into the connecting slot 1.
[0029] On the basis of the above embodiment: the connection body 3 and the wiring block 4 are integrally formed, the connection body 3 is hollow inside, and a receiving cavity 6 for inserting a wire is formed on the side facing away from the wiring block 4.
[0030] On the basis of the above-mentioned embodiment: the outer end surface of the connecting body 3 is provided with a crimping surface 9 for crimping by an external mold.
[0031] The above specific improvements are as follows: Example 1: Figure 2-Figure 4 As shown, the connection body 3 and the terminal block 4 are integrally formed, and the accommodating cavity 6 of the connection body 3 can be used for inserting a wire to form conductivity. In order to allow the wire to be fixed to the accommodating cavity 6 after being inserted into the accommodating cavity 6, an external crimping mold is used to crimp the crimping surface 9 on the outer surface of the connection body 3, so that the crimping surface 9 can be deformed inward to form a hexagonal groove shape, so that the surface of the connection body 3 squeezes the wire so that the wire can be fixed in the accommodating cavity 6.
[0032] On the basis of the above embodiment: at least one bolt 31 is disposed on the outer end surface of the connecting body 3 , and the bolt 31 can be inserted into the accommodating cavity 6 to contact the wire.
[0033] The above specific improvements are: Example 2: Figure 5 As shown, the surface of the connecting body 3 has a through groove. After the wire is inserted into the accommodating cavity 6, a bolt 31 is installed in the through groove so that the bottom of the bolt 31 contacts the wire, thereby preventing the wire from escaping from the accommodating cavity 6.
[0034] On the basis of the above embodiment: the terminal block 4 is provided with a circular hole 41 for the terminal post 2 to pass through, and an elastic gasket 7 is further provided between the terminal post 2 and the terminal block 4 .
[0035] On the basis of the above embodiment: a flat washer 8 is arranged below the elastic washer 7 .
[0036] The above specific improvements are: Figure 3 and Figure 4 As shown, by co-arranging the spring washer and the flat washer 8, the anti-vibration strength between the terminal block 4 and the terminal post 2 can be improved, thereby preventing the terminal block 4 and the terminal post 2 from becoming loose due to long-term pulling or vibration.
[0037] On the basis of the above embodiment: a guiding arc surface 61 for guiding the wire into the accommodating cavity 6 is provided at the opening of the accommodating cavity 6 .
[0038] The above-mentioned specific improvement is: by setting the guiding arc surface 61, the wire can be effectively guided into the accommodating cavity 6, so as to avoid the wire being colliding with the connecting body 3 at the opening of the accommodating cavity 6 when being inserted, thereby avoiding the situation where the wire is bent.
[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. A circuit breaker terminal connection bar, characterized in that: A connection slot (1) is provided on a molded case circuit breaker, a terminal post (2) is provided in the connection slot (1), a terminal connection row can be inserted into the connection slot (1) and connected to the terminal post (2), the terminal connection row comprises a connection body (3) and a terminal post (4) provided at the end of the connection body (3) and used for being inserted into the connection slot (1), the terminal post (4) having a rectangular or square cross section, a connection post (5) is provided between the connection body (3) and the terminal post (4), and the diameter of the connection post (5) is smaller than the width of the terminal post (4).
2. A circuit breaker terminal connection bar according to claim 1, characterized in that: The connection body (3) and the wiring block (4) are integrally formed; the connection body (3) is hollow inside, and a receiving cavity (6) for inserting a wire is formed on a side facing away from the wiring block (4).
3. A circuit breaker terminal connection bar according to claim 2, characterized in that: The outer end surface of the connecting body (3) is provided with a crimping surface (9) for crimping by an external mold.
4. A circuit breaker terminal connection bar according to claim 3, characterized in that: The outer end surface of the connecting body (3) is provided with at least one bolt (31), and the bolt (31) can be inserted into the accommodating cavity (6) to contact the wire.
5. A circuit breaker terminal connection bar according to claim 3 or 4, characterized in that: The terminal block (4) is provided with a circular hole (41) for the terminal post (2) to pass through, and an elastic gasket (7) is also provided between the terminal post (2) and the terminal block (4).
6. A circuit breaker terminal connection bar according to claim 5, characterized in that: A flat washer (8) is arranged below the elastic washer (7).
7. A circuit breaker terminal connection bar according to claim 6, characterized in that: A guiding arc surface (61) for guiding the wire to enter the accommodating cavity (6) is provided at the opening of the accommodating cavity (6).