Interpolar transmission structure

Abstract

The utility model discloses an interelectrode transmission structure. The interelectrode transmission structure comprises an operating mechanism, the moving contact assembly comprises two cover plates, and the cover plates are arranged on the two sides of the moving contact assembly respectively. The lower end of the lower connecting rod is linked with a transmission wheel, one side of the transmission wheel is linked with the cover plate, and the other side of the transmission wheel is linked with the cover plate of the adjacent moving contact assembly; the lower connecting rod of the operating mechanism acts on the transmission wheel, the transmission wheel is matched with the cover plate, the transmission wheel rotates to drive the movable contact assembly to rotate, the circuit breaker completes switching-on and switching-off actions, and compared with an original transmission mode that a metal shaft penetrates through all electrodes, the inter-electrode electric gap is increased, and the inter-electrode leakage current is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to an inter-pole transmission structure. Background Art

[0002] Molded case circuit breakers (MCCBs) consist of multiple poles (also called phases), which are linked by a metal shaft that runs through each pole. This method of transmission is problematic in that the electrical gap between the poles is small, increasing leakage current, which can affect the proper operation of the MCCB. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is how to increase the electrical gap between the poles. To this end, an inter-pole transmission structure includes:

[0004] an operating mechanism, the operating mechanism comprising a lower connecting rod;

[0005] A dynamic contact assembly, the dynamic contact assembly comprising two cover plates, the cover plates being respectively arranged on both sides of the dynamic contact assembly;

[0006] A transmission wheel, wherein the lower end of the lower connecting rod is linked to the transmission wheel, one side of the transmission wheel is linked to the cover plate, and the other side of the transmission wheel is linked to the cover plate of the adjacent dynamic contact component.

[0007] It also includes a pin shaft, and the lower connecting rod is provided with a through hole, and the pin shaft passes through the through hole and is fixed to the transmission wheel.

[0008] The transmission wheel is provided with a fixing groove, and the lower connecting rod extends to the fixing groove.

[0009] A reinforcing rib is provided in the transmission wheel, the reinforcing rib is arranged on one side of the fixing groove, and the pin passes through the reinforcing rib.

[0010] The imaginary central axis of the pin shaft and the imaginary central axis of the transmission wheel are not arranged collinearly.

[0011] The operating mechanism further includes a linkage shaft. The number of the lower connecting rods is two or more. The linkage shaft passes through the lower connecting rods to form a linkage effect between the lower connecting rods.

[0012] One of the transmission wheel and the cover plate is provided with a first protrusion, and the other of the transmission wheel and the cover plate is provided with a first through hole that matches the first protrusion.

[0013] The movable contact assembly includes a movable contact body, one of the movable contact body and the cover plate is provided with a second protrusion, and the other of the movable contact body and the cover plate is provided with a second through hole matched with the second protrusion.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. This utility model provides an inter-pole transmission structure in which the lower connecting rod of the operating mechanism acts on a transmission wheel. The transmission wheel cooperates with the cover plate, and the rotation of the transmission wheel drives the dynamic contact assembly to rotate, thereby completing the opening and closing of the circuit breaker. Compared with the original transmission method in which a metal shaft passes through each inter-pole, this increases the inter-pole electrical gap and significantly reduces the inter-pole leakage current.

[0016] 2. The inter-pole transmission structure provided by the present invention adopts a pin-fixing method, which is simple and reliable. In addition, a rivet structure or a snap-on connection can also be adopted.

[0017] 3. The utility model provides an inter-pole transmission structure, in which a fixing groove is provided inside the transmission wheel to form a positioning and fixing effect for the lower connecting rod.

[0018] 4. The utility model provides an inter-pole transmission structure with reinforcement ribs to improve the strength of the transmission wheel.

[0019] 5. The utility model provides an inter-pole transmission structure, in which the eccentric setting of the pin shaft reduces the driving force and makes the driving easier.

[0020] 6. The inter-pole transmission structure provided by the present invention has a linkage shaft, which forms a linkage effect between two or more lower connecting rods, thereby achieving synchronization and consistency.

[0021] 7. The present invention provides an inter-pole transmission structure in which the first protrusion cooperates with the first through-hole to form a linkage effect between the transmission wheel and the cover plate. The number of first protrusions can be adjusted according to actual needs. When there are two or more first protrusions, the first protrusions can be distributed in a circular array.

[0022] 8. In the inter-pole transmission structure provided by the present invention, the second protrusion cooperates with the second through-hole to form a linkage effect between the dynamic contact body and the cover plate. The number of second protrusions can be adjusted according to actual needs. When there are two or more second protrusions, the second protrusions can be distributed in a circular array. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 any creative work.

[0024] Figure 1 This is an exploded schematic diagram of an inter-pole transmission structure provided by the utility model;

[0025] Figure 2 A partial exploded schematic diagram of an inter-pole transmission structure provided by the utility model;

[0026] Figure 3 The present invention provides a partial structural diagram of an inter-pole transmission structure.

[0027] Description of reference numerals:

[0028] 11. Lower connecting rod; 12. Cover plate; 13. Transmission wheel; 14. Pin shaft; 15. Linkage shaft; 16. First protrusion; 17. First through hole; 18. Moving contact body; 19. Second protrusion; 20. Second through hole; 21. Moving contact; 22. Energy storage component; 111. Through hole; 131. Fixing groove; 132. Reinforcing rib. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] 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.

[0033] Example 1

[0034] This embodiment provides an inter-pole transmission structure, as shown in the attached Figure 1-3 Shown, including:

[0035] The operating mechanism includes a lower connecting rod 11, and the operating mechanism here also includes an upper connecting rod and a main tension spring. The external driving force will cause the upper connecting rod and the lower connecting rod 11 to rotate. Due to the cooperation between the upper connecting rod and the lower connecting rod 11, and under the action of the main tension spring, a rotation output of the lower connecting rod 11 is formed. This is a prior art, so it will not be described in detail in this embodiment. The lower connecting rod 11 cooperates with the dynamic contact component to form the effect of opening and closing the switch.

[0036] The movable contact assembly includes two cover plates 12, which are disposed on either side of the movable contact assembly. It should be noted that one movable contact assembly corresponds to one pole. The number of movable contact assemblies can be adjusted according to actual needs. In this embodiment, the number of movable contact assemblies is described as three, and the structure of each movable contact assembly is consistent.

[0037] The lower end of the lower connecting rod 11 is linked to the transmission wheel 13. One side of the transmission wheel 13 is linked to the cover plate 12, and the other side of the transmission wheel 13 is linked to the cover plate 12 of the adjacent moving contact assembly. That is, one transmission wheel 13 and one lower connecting rod 11 work together to form a linkage effect between two adjacent moving contact assemblies. When there are three moving contact assemblies, there are two transmission wheels 13 and two lower connecting rods 11 each, and one transmission wheel 13 and one lower connecting rod 11 form a set. Similarly, when there are two moving contact assemblies, only one transmission wheel 13 and one lower connecting rod 11 are required. The lower connecting rod 11 of the operating mechanism acts on the transmission wheel 13. Through the cooperation of the transmission wheel 13 and the cover plate 12, the rotation of the transmission wheel 13 drives the moving contact assembly, completing the opening and closing of the circuit breaker. Compared with the original transmission method in which a metal shaft extends between each pole, this method increases the inter-pole electrical gap and significantly reduces inter-pole leakage current.

[0038] Specifically, as attached Figure 1-3 As shown, the lower connecting rod 11 also includes a pin 14. A through-hole 111 is provided in the lower end of the lower connecting rod 11, that is, the end away from the entire operating mechanism. Pin 14 passes through through-hole 111 and secures it to the transmission wheel 13. Using pin 14 for securement is simple and reliable. Alternatively, rivets or snap-fit ​​connections can be used.

[0039] Specifically, as attached Figure 1-3As shown, the transmission wheel 13 is provided with a fixing groove 131, and the fixing groove 131 is arranged inside the transmission wheel 13. In this embodiment, the fixing groove 131 is open upward, so that the lower connecting rod 11 extends to the fixing groove 131, forming a positioning and fixing effect of the lower connecting rod 11, and then the transmission wheel 13 and the lower connecting rod 11 are connected and fixed by the pin shaft 14.

[0040] Specifically, as attached Figure 1-3 As shown, a reinforcing rib 132 is provided in the transmission wheel 13, and the reinforcing rib 132 is provided on one side of the fixing groove 131, and the pin 14 passes through the reinforcing rib 132. The provision of the reinforcing rib 132 further improves the strength of the fixation.

[0041] Specifically, the imaginary central axis of the pin 14 is not collinear with the imaginary central axis of the transmission wheel 13. The eccentric arrangement of the pin 14 reduces driving force, making it easier to drive. In this embodiment, the center distance between the pin 14 and the transmission wheel 13 can be adjusted according to actual needs, ensuring the fit between the pin 14 and the transmission wheel 13 is strong enough to prevent the risk of breakage under rotational forces, while also ensuring easier rotation.

[0042] Specifically, as attached Figure 1-3 As shown, the operating mechanism also includes a linkage shaft 15. There are two or more lower links 11, and the linkage shaft 15 passes through the lower links 11, creating a linkage effect between the lower links 11. This creates a linkage effect between the two or more lower links 11, achieving synchronization and consistency. In this embodiment, the number of lower links 11 is two, and the linkage shaft 15 cooperates with the two lower links 11 to form an inverted U-shaped structure.

[0043] Specifically, as attached Figure 1-3 As shown, one of the transmission wheel 13 and the cover plate 12 is provided with a first protrusion 16, and the other of the transmission wheel 13 and the cover plate 12 is provided with a first through hole 17 that cooperates with the first protrusion 16. The first protrusion 16 cooperates with the first through hole 17 to form a linkage effect between the transmission wheel 13 and the cover plate 12. The number of the first protrusions 16 here can be adjusted according to actual needs. When the number of the first protrusions 16 is two or more, the first protrusions 16 can be distributed in a circular array. In this embodiment, the first protrusions 16 are described as four as an example, and the four first protrusions 16 are distributed in a circular array. In this embodiment, the cover plate 12 is provided with four first protrusions 16 on the side facing the transmission wheel 13, and the transmission wheel 13 is provided with four corresponding first through holes 17 on the side facing the cover plate 12. The first protrusion 16 is cylindrical. The two side surfaces of the transmission wheel 13 are symmetrically arranged, that is, the structures of the two side surfaces are consistent.

[0044] Specifically, as attached Figure 1-3As shown, the dynamic contact assembly includes a dynamic contact body 18. One of the dynamic contact body 18 and the cover plate 12 is provided with a second protrusion 19, and the other of the dynamic contact body 18 and the cover plate 12 is provided with a second through-hole 20 that cooperates with the second protrusion 19. The second protrusion 19 cooperates with the second through-hole 20 to form a linkage effect between the dynamic contact body 18 and the cover plate 12. The number of second protrusions 19 here can be adjusted according to actual needs. When there are two or more second protrusions 19, the second protrusions 19 can be distributed in a circular array. In this embodiment, two second protrusions 19 are provided on the side of the cover plate 12 facing the dynamic contact body 18. The two second protrusions 19 are distributed in a circular array, and the dynamic contact body 18 is provided with two second through-holes 20. The second protrusions 19 are square or irregular in shape.

[0045] Specifically, as attached Figure 1-3 As shown, the movable contact body 18 is fixed with two movable contacts 21, which are facing in opposite directions. In addition, the movable contact body 18 is also provided with an energy storage component 22 for applying contact pressure, thereby increasing the contact pressure of the movable contacts 21.

[0046] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An inter-pole transmission structure, characterized in that: include: An operating mechanism, the operating mechanism comprising a lower connecting rod (11); A dynamic contact component, the dynamic contact component comprising two cover plates (12), the cover plates (12) being arranged on both sides of the dynamic contact component; A transmission wheel (13), the lower end of the lower connecting rod (11) is linked to the transmission wheel (13), one side of the transmission wheel (13) is linked to the cover plate (12), and the other side of the transmission wheel (13) is linked to the cover plate (12) of the adjacent dynamic contact component.

2. The inter-pole transmission structure according to claim 1, characterized in that: It also includes a pin shaft (14), the lower connecting rod (11) is provided with a through hole (111), and the pin shaft (14) passes through the through hole (111) and is fixedly matched with the transmission wheel (13).

3. The inter-pole transmission structure according to claim 2, characterized in that: The transmission wheel (13) is provided with a fixing groove (131), and the lower connecting rod (11) extends to the fixing groove (131).

4. The inter-pole transmission structure according to claim 3, characterized in that: A reinforcing rib (132) is provided in the transmission wheel (13), the reinforcing rib (132) is arranged on one side of the fixing groove (131), and the pin shaft (14) passes through the reinforcing rib (132).

5. The inter-pole transmission structure according to claim 2, 3 or 4, characterized in that: The imaginary central axis of the pin (14) and the imaginary central axis of the transmission wheel (13) are not arranged on the same line.

6. The inter-pole transmission structure according to claim 1, characterized in that: The operating mechanism further comprises a linkage shaft (15), the number of the lower connecting rods (11) is two or more, and the linkage shaft (15) passes through the lower connecting rods (11) to form a linkage effect between the lower connecting rods (11).

7. The inter-pole transmission structure according to claim 1, characterized in that: One of the transmission wheel (13) and the cover plate (12) is provided with a first protrusion (16), and the other of the transmission wheel (13) and the cover plate (12) is provided with a first through hole (17) that matches the first protrusion (16).

8. The inter-pole transmission structure according to claim 1, characterized in that: The dynamic contact assembly includes a dynamic contact body (18), one of the dynamic contact body (18) and the cover plate (12) is provided with a second protrusion (19), and the other of the dynamic contact body (18) and the cover plate (12) is provided with a second through hole (20) that cooperates with the second protrusion (19).

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