Breaker handle sealing structure

Abstract

The utility model discloses a breaker handle sealing structure, which comprises a mounting seat, a handle, a rivet and a sealing ring, the mounting seat is vertically through and is internally provided with an inner circle step, the sealing ring is placed on the inner circle step, the outer ring of the sealing ring is in interference fit with the inner circle step, and the middle part of the handle is provided with a spherical bulge. The handle penetrates through the mounting base, and the bottom of the spherical protrusion abuts against the sealing ring. By arranging the spherical bulge on the handle and arranging the sealing ring between the spherical bulge and the inner circle step to form tight fit, the handle and the interior of the circuit breaker are sealed, the dustproof, explosion-proof and corrosion-proof effects are achieved, and meanwhile flexible rotation of the handle is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a sealing structure for a circuit breaker handle. Background Art

[0002] The operating handle is a commonly used functional component of electrical appliances such as conventional mechanical structure switches and circuit breakers at present. As a kinetic energy transmission component of the mechanical operating system, it is necessary to ensure flexible movement and smoothly transmit external kinetic energy to the internal self-locking mechanism. As a protection device, the circuit breaker needs to be designed with a sealing performance to improve the environmental usability and perform functions of dust prevention, explosion prevention, and corrosion prevention. Since the handle needs to perform mechanical operations, sealing methods such as welding cannot be used. Therefore, while sealing the handle and the interior of the circuit breaker, it is also necessary to ensure that the handle can rotate flexibly. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a sealing structure for a circuit breaker handle, aiming to improve the sealing performance of the circuit breaker while ensuring that the handle can rotate flexibly inside the circuit breaker.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: A sealing structure for a circuit breaker handle includes a mounting base, a handle, a rivet, and a sealing ring. The mounting base penetrates up and down and has an inner circular step inside. The sealing ring is placed on the inner circular step, and the outer circle of the sealing ring is in interference fit with the inner circular step. A spherical protrusion is provided in the middle of the handle. The handle passes through the mounting base, and the bottom of the spherical protrusion abuts against the sealing ring.

[0005] Two counterbored holes for installing rivets are provided on the side wall of the mounting base and are arranged oppositely. A through hole is provided on the spherical protrusion, and the rivet passes through the through hole and is installed in the counterbored hole.

[0006] The spherical protrusion is in interference fit with the inner circle of the sealing ring.

[0007] There is a lubricating grease between the spherical protrusion and the sealing ring.

[0008] The beneficial effects of the utility model: By providing a spherical protrusion on the handle and placing a sealing ring between the spherical protrusion and the inner circular step to form a tight fit, the handle and the interior of the circuit breaker are sealed, achieving the functions of dust prevention, explosion prevention, and corrosion prevention. At the same time, the structure is simple and easy to operate. Brief Description of the Drawings

[0009] The following further illustrates the utility model in conjunction with the drawings:

[0010] Figure 1 is the front view of the utility model;

[0011] Figure 2 is the side view of the utility model;

[0012] Figure 3 This is a cross-sectional view of the mounting base of the present utility model;

[0013] Figure 4 This is a structural schematic diagram of the handle of the present utility model;

[0014] In the figure: 1, mounting base; 2, handle; 3, rivet; 4, sealing ring; 5, inner circular step; 6, spherical protrusion; 7, countersunk hole; 8, through hole. Specific embodiments

[0015] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model.

[0016] The technical solutions of the present utility model will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. The same or similar concepts or processes may not be repeated in some embodiments. Embodiment

[0017] As Figures 1 to 4 shown, the present utility model provides a circuit breaker handle sealing structure, including a mounting base 1, a handle 2, a rivet 3 and a sealing ring 4. The mounting base 1 penetrates up and down and has an inner circular step inside. The sealing ring 4 is placed on the inner circular step 5 and the outer ring of the sealing ring 4 is in interference fit with the inner circular step 5. A spherical protrusion 6 is provided in the middle of the handle 2. The handle 2 passes through the mounting base 1 and the bottom of the spherical protrusion 6 abuts against the sealing ring 4. The spherical protrusion 6 is in interference fit with the inner ring of the sealing ring 4.

[0018] By providing a spherical protrusion 6 on the handle 2 and placing a sealing ring 4 between the spherical protrusion 6 and the inner circular step 5 to form a tight fit, the handle 2 is sealed with the inside of the circuit breaker, effectively preventing dust from entering the inside of the circuit breaker and affecting the normal use of the circuit breaker. At the same time, the handle 2 can rotate flexibly.

[0019] Specifically, in order to prevent the handle 2 from moving axially and radially and further improve the sealing performance, two countersunk holes 7 for installing the rivet 3 are provided on the side wall of the mounting base 2 and are arranged oppositely. A through hole 8 is provided on the spherical protrusion 6. The rivet 3 passes through the through hole 8 and is installed in the countersunk hole 7. By rotating the handle 2 to align the through hole 8 and the countersunk hole 7, and inserting the rivet 3, the assembly can be completed.

[0020] Specifically, in order to enhance the sealing reliability at the handle 2, the service life of the sealing ring 4, and reduce the friction force between the handle 2 and the sealing ring 4, a lubricating grease is provided between the spherical protrusion 6 and the sealing ring 4.

[0021] In addition to the above preferred embodiments, the present utility model has other implementation manners. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection claimed by the present utility model.

Claims

1. A circuit breaker handle sealing structure, characterized in that, It includes a mounting base (1), a handle (2), a rivet (3) and a sealing ring (4). The mounting base (1) penetrates up and down and has an inner circular step inside. The sealing ring (4) is placed on the inner circular step (5), and the outer ring of the sealing ring (4) is in interference fit with the inner circular step (5). A spherical protrusion (6) is provided in the middle of the handle (2). The handle (2) passes through the mounting base (1), and the bottom of the spherical protrusion (6) abuts against the sealing ring (4).

2. The sealed structure of a circuit breaker handle according to claim 1, wherein, Two counterbored holes (7) which are oppositely arranged and used for installing the rivet (3) are formed in the side wall of the mounting base (1). A through hole (8) is provided in the spherical protrusion (6). The rivet (3) passes through the through hole (8) and is installed in the counterbored hole (7).

3. The sealing structure of a circuit breaker handle according to claim 1, characterized in that, The spherical protrusion (6) is in interference fit with the inner ring of the sealing ring (4).

4. A circuit breaker handle sealing structure according to claim 1, characterized in that, There is grease between the spherical protrusion (6) and the sealing ring (4).

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