Moving contact mounting structure

Abstract

The utility model relates to the technical field of moving contacts, in particular to a moving contact mounting structure. The problem that in the prior art, a moving contact and a contact support are not firmly installed is solved, and the practicability of equipment is improved. The structure comprises a contact support, the bottom of the contact support is provided with a limiting groove, the side wall of the contact support is provided with a first sliding hole and a second sliding hole, the first sliding hole is internally connected with a first moving contact rod in a sliding mode, the second sliding hole is internally connected with a second moving contact rod in a sliding mode, and the first moving contact rod and the second moving contact rod are both clamped with the limiting groove. Mounting grooves are further formed in the two sides of the limiting groove, mounting pieces are slidably connected into the mounting grooves, and first limiting plates and second limiting plates are arranged in the mounting pieces. According to the embodiment, the design that the first movable feeler lever and the second movable feeler lever are directly clamped and fixed through a spring piece in the prior art is replaced, installation is firmer and more reliable, and high practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of moving contact technology, specifically to a moving contact mounting structure. Background Technology

[0002] Moving contacts are key components in electrical equipment used to control the switching of circuits. They are commonly used in various electrical switches, such as circuit breakers, contactors, and disconnectors. A moving contact is a movable contact that makes contact with or breaks contact with a fixed contact to control the flow of current. During the operation of an electrical switch, the main function of the moving contact is to conduct or disconnect current by contacting the fixed contact, and it can withstand large currents and frequent operation.

[0003] The existing moving contact mounting bracket is designed to facilitate the installation and maintenance of the moving contact rod. A spring plate is installed on the moving contact rod, and the spring force of the spring plate snaps the moving contact rod into place on the mounting bracket.

[0004] While this allows for convenient installation and maintenance of the moving contact, the following problems still exist: Since the moving contact rod is fixed to the mounting bracket by the elasticity of the spring plate, the spring force may be reduced after the circuit breaker has been used for a long time, resulting in the moving contact not being securely installed and easily loosening. Utility Model Content

[0005] This utility model proposes a moving contact mounting structure, which solves the problem of unstable installation of the moving contact and contact support in the prior art, and improves the practicality of the equipment.

[0006] The technical solution of this utility model is as follows:

[0007] A moving contact mounting structure includes a contact support.

[0008] The bottom of the contact bracket is provided with a limiting groove, and the side wall of the contact bracket is provided with a first sliding hole and a second sliding hole. A first movable contact rod is slidably connected in the first sliding hole, and a second movable contact rod is slidably connected in the second sliding hole. Both the first and second movable contact rods are engaged with the limiting groove. The limiting groove is also provided with mounting grooves on both sides. Mounting components are slidably connected in the mounting grooves. The mounting components are provided with a first limiting plate and a second limiting plate. The mounting components are provided with a control structure for synchronously controlling the first and second limiting plates to move towards each other or move away from each other.

[0009] Furthermore, the control structure includes a control bolt, the mounting component has a "U" shaped structure, the mounting component is provided with a lead screw and a sliding rod, the lead screw is rotatably connected to the mounting component, the sliding rod is fixedly connected to the mounting component, the first limiting plate and the second limiting plate are both threadedly connected to the lead screw, the first limiting plate and the second limiting plate are both slidably connected to the sliding rod, and the control bolt is fixedly connected to the lead screw.

[0010] Furthermore, the lead screw is provided with a first thread and a second thread on both sides, the first thread and the second thread have opposite directions of rotation, the first limiting plate and the first thread are connected by threads, and the second limiting plate and the second thread are connected by threads.

[0011] Furthermore, the limiting groove has a circular cross-section, the mounting groove has a rectangular cross-section, and the mounting groove is disposed on the side walls on both sides of the limiting groove.

[0012] Furthermore, the first movable contact rod is provided with a first limiting protrusion near the second movable contact rod, and the second movable contact rod is provided with a second limiting protrusion near the first movable contact rod. Both the first limiting protrusion and the second limiting protrusion are engaged with the limiting groove. The first limiting protrusion is provided with a first guiding slope near the limiting groove, and the second limiting protrusion is provided with a second guiding slope near the limiting groove.

[0013] Furthermore, the bottom of the contact bracket is provided with a rotating groove, the cross section of which is circular, and the diameter of the rotating groove is larger than the diameter of the bottom limiting groove.

[0014] Furthermore, the contact support sidewall is provided with several heat dissipation holes, each of which is connected to the limiting groove.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The installation process in this embodiment is as follows: First, insert the mounting component into the mounting groove. Then, insert the first moving contact rod and the second moving contact rod into the first sliding hole and the second sliding hole, respectively. Then, rotate the control bolt, and the lead screw will drive the first limiting plate and the second limiting plate to move closer to each other, so that the first limiting protrusion and the second limiting protrusion on the first moving contact rod and the second moving contact rod are engaged in the limiting groove, thus completing the installation.

[0017] In this embodiment, a limiting groove and an installation groove are provided at the bottom of the contact bracket. A first moving contact rod and a second moving contact rod are slidably arranged on the side wall of the contact bracket. An installation component is set in the installation groove. The movement of the first limiting plate and the second limiting plate is controlled by a control structure to realize the installation of the first moving contact rod, the second moving contact rod and the contact bracket. This replaces the design of the prior art that directly fixes the first moving contact rod and the second moving contact rod by spring clips. The installation of this embodiment is more secure and reliable and has strong practicality. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the existing technology;

[0020] Figure 2 This is a schematic diagram of the contact support structure in this embodiment;

[0021] Figure 3 This is a schematic diagram of the overall structure of this embodiment;

[0022] Figure 4 This is a schematic diagram of the internal structure of this embodiment. Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the internal structure of this embodiment. Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the bottom structure of the contact support in this embodiment.

[0025] In the picture:

[0026] 1. Contact bracket; 11. First sliding hole; 12. Second sliding hole; 13. Heat dissipation hole; 21. First moving contact rod; 211. First limiting protrusion; 2111. First guide slope; 22. Second moving contact rod; 221. Second limiting protrusion; 2211. Second guide slope; 3. Mounting component; 41. Sliding rod; 42. Lead screw; 421. First thread; 422. Second thread; 43. Control bolt; 51. First limiting plate; 52. Second limiting plate; 61. Limiting groove; 62. Mounting groove; 63. Rotation groove. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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 scope of protection of this utility model.

[0028] like Figures 2-6 As shown in the figure, this embodiment proposes a moving contact mounting structure, which includes a contact support 1.

[0029] In this embodiment, the limiting groove 61 is located at the bottom of the contact bracket 1 to engage the first moving contact rod 21 and the second moving contact rod 22. The first sliding hole 11 and the second sliding hole 12 are located on the side wall of the contact bracket 1. The first moving contact rod 21 is slidably disposed within the first sliding hole 11, and the second moving contact rod 22 is slidably disposed within the second sliding hole 12. Both the first moving contact rod 21 and the second moving contact rod 22 are engaged with the limiting groove 61. The mounting groove 62 is located on both sides of the limiting groove 61, and the mounting component 3 is slidably disposed within the mounting groove 62. The first limiting plate 51 and the second limiting plate 52 are disposed within the mounting component 3. The control structure is disposed within the mounting component 3 to synchronously control the first limiting plate 51 and the second limiting plate 52 to move towards each other or move away from each other synchronously. In this embodiment, the first limiting plate 51 and the second limiting plate 52 are used to control and limit the first moving contact rod 21 and the second moving contact rod 22, ensuring that the first moving contact rod 21 and the second moving contact rod 22 are fixedly installed on the contact bracket 1, resulting in a more stable and reliable installation. This design ensures that the torque of the contact bracket 1 in this embodiment is increased from 5Nm in the prior art to 9Nm by changing the mold structure, making the head less prone to breakage.

[0030] The control structure in this embodiment includes a control bolt 43. The mounting part 3 has a "U"-shaped structure to provide space for the first moving contact rod 21 and the second moving contact rod 22 to pass through, facilitating their installation. A lead screw 42 and a sliding rod 41 are disposed within the mounting part 3. The lead screw 42 is rotatably connected to the mounting part 3, and the sliding rod 41 is fixedly connected to the mounting part 3. The first limiting plate 51 and the second limiting plate 52 are both threadedly connected to the lead screw 42, and both are slidably connected to the sliding rod 41. The control bolt 43 is fixedly connected to the lead screw 42. In this embodiment, the movement of the first limiting plate 51 and the second limiting plate 52 is controlled by the lead screw 42. Since the first limiting plate 51 and the second limiting plate 52 are difficult to reverse and drive the lead screw 42 to rotate, when the control bolt 43 stops rotating, the positions of the first limiting plate 51 and the second limiting plate 52 form a self-locking mechanism, ensuring that the first moving contact rod 21 and the second moving contact rod 22 will not easily disengage.

[0031] In this embodiment, the first thread 421 and the second thread 422 are located on both sides of the lead screw 42, and the first thread 421 and the second thread 422 have opposite directions of rotation. The first limiting plate 51 and the first thread 421 are connected by threads, and the second limiting plate 52 and the second thread 422 are connected by threads. This design ensures that the first limiting plate 51 and the second limiting plate 52 can be synchronously controlled to move towards each other or away from each other by rotating the control bolt 43, making the clamping, fixing, and adjustment of the first moving contact rod 21 and the second moving contact rod 22 more convenient.

[0032] In this embodiment, the limiting groove 61 has a circular cross-section, and the mounting groove 62 has a rectangular cross-section. The mounting groove 62 is located on the side walls of both sides of the limiting groove 61. This design is to ensure that the mounting component 3 is more stable when sliding within the mounting groove 62, and to prevent slippage or misalignment.

[0033] In this embodiment, the first limiting protrusion 211 is disposed on the side of the first moving contact rod 21 near the second moving contact rod 22, and the second limiting protrusion 221 is disposed on the side of the second moving contact rod 22 near the first moving contact rod 21. Both the first limiting protrusion 211 and the second limiting protrusion 221 are engaged with the limiting groove 61. The first guide slope 2111 is disposed on the side of the first limiting protrusion 211 near the limiting groove 61, and the second guide slope 2211 is disposed on the side of the second limiting protrusion 221 near the limiting groove 61. In this embodiment, the first guide slope 2111 is disposed on both sides of the first limiting protrusion 211, which makes it easier for the first limiting protrusion 211 to enter the limiting groove 61, ensuring a more accurate installation position and a more secure and reliable installation of the first limiting protrusion 211.

[0034] In this embodiment, the rotating groove 63 is located at the bottom of the contact bracket 1. The cross-section of the rotating groove 63 is circular, and the diameter of the rotating groove 63 is larger than the diameter of the bottom limiting groove 61. This design ensures that the contact bracket 1 can rotate during installation, facilitating the contact of the first moving contact rod 21 and the second moving contact rod 22 with or away from the fixed contact of the electrical component.

[0035] In this embodiment, several heat dissipation holes 13 are disposed on the side wall of the contact support 1, and each heat dissipation hole 13 is connected to the limiting groove 61. The heat dissipation holes 13 used in this embodiment are to reduce the temperature inside the contact support 1 and improve the service life of the contact support 1. After experimental testing, the moving contact in this embodiment has a lifespan of 20,000 cycles.

[0036] The installation process in this embodiment is as follows: First, insert the mounting part 3 into the mounting groove 62. Then, insert the first moving contact rod 21 and the second moving contact rod 22 into the first sliding hole 11 and the second sliding hole 12, respectively. Then, rotate the control bolt 43, and drive the first limiting plate 51 and the second limiting plate 52 to move closer to each other through the lead screw 42, so that the first limiting protrusion 211 and the second limiting protrusion 221 on the first moving contact rod 21 and the second moving contact rod 22 are engaged in the limiting groove 61, thus completing the installation.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A moving contact mounting structure, including a contact support (1), characterized in that a limiting groove (61) is provided at the bottom of the contact support (1), a first sliding hole (11) and a second sliding hole (12) are provided on the side wall of the contact support (1), a first moving contact rod (21) is slidably connected in the first sliding hole (11), a second moving contact rod (22) is slidably connected in the second sliding hole (12), both the first moving contact rod (21) and the second moving contact rod (22) are clamped with the limiting groove (61), mounting grooves (62) are further provided on both sides of the limiting groove (61), a mounting member (3) is slidably connected in the mounting groove (62), a first limiting plate (51) and a second limiting plate (52) are provided in the mounting member (3), and a control structure for synchronously controlling the synchronous inward movement or synchronous outward movement of the first limiting plate (51) and the second limiting plate (52) is provided in the mounting member (3).

2. The moving contact mounting structure according to claim 1, characterized in that, The control structure includes a control bolt (43), the mounting member (3) has a "return" - shaped structure, a screw rod (42) and a sliding rod (41) are provided in the mounting member (3), the screw rod (42) is rotatably connected to the mounting member (3), the sliding rod (41) is fixedly connected to the mounting member (3), both the first limiting plate (51) and the second limiting plate (52) are threadedly connected to the screw rod (42), both the first limiting plate (51) and the second limiting plate (52) are slidably connected to the sliding rod (41), and the control bolt (43) is fixedly connected to the screw rod (42).

3. The moving contact mounting structure according to claim 2, characterized in that, First threads (421) and second threads (422) are provided on both sides of the screw rod (42), the helix directions of the first threads (421) and the second threads (422) are opposite, the first limiting plate (51) is threadedly connected to the first threads (421), and the second limiting plate (52) is threadedly connected to the second threads (422).

4. The moving contact mounting structure according to claim 1, characterized in that, The cross - section of the limiting groove (61) is a circular structure, the cross - section of the mounting groove (62) is a rectangular structure, and the mounting groove (62) is provided on the side walls on both sides of the limiting groove (61).

5. The moving contact mounting structure according to claim 1, characterized in that, A first limiting convex block (211) is provided on the side of the first moving contact rod (21) close to the second moving contact rod (22), a second limiting convex block (221) is provided on the side of the second moving contact rod (22) close to the first moving contact rod (21), both the first limiting convex block (211) and the second limiting convex block (221) are clamped with the limiting groove (61), a first guiding inclined surface (2111) is provided on the side of the first limiting convex block (211) close to the limiting groove (61), and a second guiding inclined surface (2211) is provided on the side of the second limiting convex block (221) close to the limiting groove (61).

6. The moving contact mounting structure according to claim 1, characterized in that, A rotating groove (63) is further provided at the bottom of the contact support (1), the cross - section of the rotating groove (63) is a circular structure, and the diameter of the rotating groove (63) is larger than the diameter of the bottom limiting groove (61).

7. The moving contact mounting structure according to claim 1, characterized in that, A plurality of heat dissipation holes (13) are further provided on the side wall of the contact support (1), and each of the heat dissipation holes (13) is communicated with the limiting groove (61).

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