Slotted contact arm
By designing annular grooves and trapezoidal positioning discs for bolted connections on the circuit breaker contact arms, the problem of difficult contact arm disassembly is solved, enabling convenient disassembly of the contact arms and convenient maintenance of the moving and stationary contacts.
Patent Information
- Application Number
- CN202520591604.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The contact arms of existing circuit breakers are difficult to disassemble easily, resulting in laborious and difficult disassembly of the moving and stationary contacts.
A slotted contact arm was designed, with an annular groove and symmetrical trapezoidal positioning discs on the contact arm body. The contact arm mounting head is detachable by bolt connection, simplifying the disassembly process of the moving and stationary contacts.
It enables convenient disassembly of the contact arm, improving the ease of maintenance of both moving and stationary contacts.
Smart Images
Figure CN223956548U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the circuit breaker structure technical field relates to a slotting contact arm. BACKGROUND
[0002] The contact arm on the circuit breaker is mainly used for installing the moving and static contact, and one end of the contact arm is installed on the contact arm base, and the other end is used for installing the moving and static contact.
[0003] However, when the moving and static contact is disassembled, the whole contact arm needs to be disassembled, but in practice, it is difficult to disassemble the contact arm after it is installed on the contact arm base. SUMMARY
[0004] The utility model discloses in order to solve the technical problem in the prior art, provide a slotting contact arm convenient for moving and static contact disassembly.
[0005] The utility model discloses a slotting contact arm, including contact arm body, its characterized in that, the contact arm body can detachably connect with the contact arm mounting head for installing the moving and static contact, the annular recess is seted up on the contact arm mounting head peripheral wall, the contact arm body end portion has two symmetrical shaped locating disc, the locating disc adopts trapezoidal structure, the locating disc is seted up screw hole no.
[0006] In the above-mentioned slotting contact arm, the end wall of the contact arm mounting head is provided with a matching slot matched with the locating disc.
[0007] Compared with the prior art, the slotting contact arm has the advantages of convenient moving and static contact disassembly. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is the sectional view of the slotting contact arm.
[0009] Figure 2 It is the structure diagram of the contact arm body.
[0010] In the drawing, 1, contact arm body, 2, contact arm mounting head, 3, annular recess, 4, locating disc, 5, bolt. DETAILED DESCRIPTION
[0011] The following is a specific embodiment of the utility model and is further described the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.
[0012] As Figure 1 , Figure 2As shown, the slotting contact arm comprises a contact arm body 1, a contact arm mounting head 2 for mounting the moving and static contacts is detachably connected to the contact arm body 1, an annular groove 3 is formed in the peripheral wall of the contact arm mounting head 2, the contact arm body 1 is provided with two symmetrical positioning discs 4 at the end portion, the positioning discs 4 are in trapezoidal shape, screw holes one are formed in the positioning discs 4, screw holes two are formed in the contact arm mounting head 2 and communicate with the screw holes one, the screw holes one and the screw holes two are connected by a bolt 5 arranged in the annular groove 3, when the moving and static contacts are disassembled, the contact arm mounting head 2 is directly disassembled, and the maintenance of the moving and static contacts is facilitated.
[0013] Preferably, a counter-groove matched with the positioning disc 4 is formed in the end wall of the contact arm mounting head 2.
[0014] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.
[0015] Although the terms of the contact arm body 1, the contact arm mounting head 2, the annular groove 3, the positioning disc 4 and the bolt 5 are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.
Claims
1. A slotting arm comprising an arm body (1), characterized in that, The contact arm body (1) is detachably connected with a contact arm mounting head (2) for mounting the movable and static contacts, an annular groove (3) is formed in the peripheral wall of the contact arm mounting head (2), the end of the contact arm body (1) is provided with two symmetrical positioning discs (4), the positioning disc (4) has a trapezoidal structure, a screw hole one is formed in the positioning disc (4), a screw hole two is formed in the contact arm mounting head (2) and communicates with the screw hole one, and the screw hole one and the screw hole two are connected through a bolt (5) arranged in the annular groove (3).
2. A slotted finger according to claim 1, wherein, An opposite slot is formed in the end wall of the contact arm mounting head (2) and matches the positioning disc (4).