Connecting structure and carbon brush support with alarm function

Abstract

The utility model relates to the technical field of motor components, in particular to a connecting structure and a carbon brush support with an alarm function. Comprising a first frame, a first placement groove formed in the outer wall of the first frame, a first sliding groove formed in the inner wall of the first placement groove, a first elastic piece arranged on the inner wall of the first placement groove and a baffle arranged at one end of the first elastic piece, and the baffle slides in the first sliding groove; the connecting structure and the carbon brush support with the alarm function have the functions of rapidly disassembling and assembling the carbon brush and giving an alarm under the condition that the carbon brush is abraded or lacked.

Description

Technical Field

[0001] This utility model relates to the field of motor component technology, and in particular to a connection structure and a carbon brush bracket with alarm function. Background Technology

[0002] The carbon brush holder, also known as a brush grip, mainly functions to fix the carbon brush on a rotating slip ring using spring pressure, thus ensuring stable transmission of current, voltage, and other signals between the fixed and rotating parts.

[0003] Long-term operation or abnormal wear of carbon brushes can cause them to shorten, leading to poor contact with the rotating body. If this is not detected in time, it can cause equipment failure. However, current carbon brush holders are not designed with alarm auxiliary contacts, so they do not have an alarm function when the carbon brushes wear down and shorten, and cannot send alarm signals to maintenance personnel in a timely manner. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above or prior art, this utility model is proposed.

[0006] Therefore, this utility model proposes a connection structure, the purpose of which is to solve the problem of needing to quickly replace carbon brushes after they wear out.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a connection structure, including a first frame, a first placement groove disposed on the outer wall of the first frame, a first sliding groove disposed on the inner wall of the first placement groove, a first elastic member disposed on the inner wall of the first placement groove, and a baffle disposed at one end of the first elastic member, wherein the baffle slides in the first sliding groove.

[0008] As a preferred embodiment of the connection structure of this utility model, the first frame outer wall is provided with a fixing plate, the fixing plate outer wall is provided with a first fixing groove, and two fixing plates are provided on the first frame outer wall.

[0009] In a preferred embodiment of the connection structure of this utility model, the baffle is provided with sliding plates at both ends, and the sliding plates slide through the first sliding groove.

[0010] As a preferred embodiment of the connection structure of this utility model, two of the first sliding grooves are provided on the outer wall of the first frame.

[0011] The beneficial effects of the connection structure of this utility model are: it allows the carbon brush to slide within the first frame, and when the carbon brush is worn and needs to be replaced, the sliding changes the position of the carbon brush, making it easier to remove the carbon brush.

[0012] Another objective of this invention is to provide a carbon brush holder with an alarm function, which aims to solve the problem that existing technologies do not have an alarm function when carbon brushes wear down and become shorter, which prevents maintenance personnel from replacing them in time and poses potential risks.

[0013] To solve the above-mentioned technical problems, this utility model also provides the following technical solution: a carbon brush bracket with alarm function, which includes a connecting structure and a protective shell. The protective shell is disposed on the outer wall of a first frame, a stationary contact is disposed on the inner wall of the protective shell, a moving contact is disposed on the inner wall of the protective shell, and a moving connecting rod is disposed through the outer wall of the moving contact. The moving connecting rod is connected to a sliding plate.

[0014] As a preferred embodiment of the carbon brush holder with alarm function of this utility model, four stationary contacts are provided on the inner wall of the protective shell, and the stationary contacts are connected to terminals; two moving contacts are provided on the inner wall of the protective shell, and the moving contacts are slidably connected to the moving linkage.

[0015] As a preferred embodiment of the carbon brush holder with alarm function of this utility model, the outer wall of the moving link is provided with a second elastic element, and the two ends of the second elastic element are respectively connected to the sliding plate and the protective shell.

[0016] As a preferred embodiment of the carbon brush holder with alarm function of this utility model, the outer wall of the moving link is provided with a third elastic element, and each end of the third elastic element is connected to a moving contact.

[0017] As a preferred embodiment of the carbon brush holder with alarm function of this utility model, the protective shell is fixedly connected to the first frame, and the protective shell is provided on the outer wall of the first frame in two parts.

[0018] As a preferred embodiment of the carbon brush holder with alarm function of this utility model, wherein: a first limiting block is fixedly connected to the outer wall of the moving link, and the first limiting block is disposed at the end of the moving contact near the sliding plate; a second limiting block is fixedly connected to the outer wall of the moving link, and the second limiting block is disposed at the end of the moving contact away from the sliding plate.

[0019] The beneficial effect of the carbon brush holder with alarm function of this utility model is that by converting the degree of carbon brush wear into the movement of the moving contact and contact with different stationary contacts, an alarm for carbon brush wear can be realized. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a side view of the connection structure and the carbon brush holder with alarm function described in this utility model when the alarm is triggered.

[0022] Figure 2 This is a top view of the connection structure and the alarm triggering of the carbon brush bracket with alarm function described in this utility model;

[0023] Figure 3 This is a side view of the connection structure and the carbon brush holder with alarm function described in this utility model when the alarm is not triggered;

[0024] Figure 4 This is a front view of the connection structure and the carbon brush holder with alarm function described in this utility model;

[0025] Figure 5 This is a partial three-dimensional view of the connection structure described in this utility model and another connection method between the moving link 24 and the moving contact 23 of the carbon brush bracket with alarm function. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Example 1

[0030] Reference Figures 1-2This is the first embodiment of the present utility model. This embodiment provides a connection structure 1, including a first frame 11, a first placement groove 12 disposed on the outer wall of the first frame 11, a first sliding groove 13 disposed on the inner wall of the first placement groove 12, a first elastic member 14 disposed on the inner wall of the first placement groove 12, and a baffle 15 disposed at one end of the first elastic member 14. The baffle 15 slides in the first sliding groove 13.

[0031] The first frame 11 is cubic in shape. When using the first frame 11 in different usage scenarios, the shape of the first frame 11 should be modified according to the different usage environments. In this embodiment, the first frame 11 is cuboid in shape. The first placement groove 12 is opened on one side of the cuboid. The opening size of the first placement groove 12 needs to be larger than the size of the carbon brush used. The first sliding groove 13 is opened through the inner wall of the first placement groove 12. The shape of the first sliding groove 13 can be polygonal, rectangular, etc. In this embodiment, a rectangle is used. The first elastic element 14 can be made of any elastic component or structure, such as a spring, airbag, etc. In this embodiment, a spring is used. The two ends of the first elastic element 14 are respectively fixedly connected to the side of the inner wall of the first placement groove 12 away from the groove opening and the side of the baffle 15 away from the groove opening of the first placement groove 12. The side of the baffle 15 close to the first placement groove 12 is connected to the carbon brush. The connection between the carbon brush and the baffle 15 can be mortise and tenon or welding. The two ends of the baffle 15 slide in the first sliding groove 13. The two ends of the baffle 15 are shaped to be accommodated by the first sliding groove 13 and slide in the groove.

[0032] In use, the first frame 11 is placed in the working position, and the carbon brush is embedded in the first placement groove 12, so that the carbon brush is connected to the baffle 15. Once the carbon brush is connected to the baffle 15, it can start working. When the carbon brush is used for a long time or abnormal wear occurs, the structure will not immediately lose its working ability due to the presence of the first elastic element 14, but it is still necessary to stop working. In some cases, when the carbon brush is worn too badly and completely enters the first placement groove 12, the user can use the elasticity of the first elastic element 14 and pull the baffle 15 that slides inside the first sliding groove 13. When the user pulls the baffle 15 to a position where the carbon brush can be easily separated, the connection between the carbon brush and the baffle 15 can be disconnected, and a new carbon brush can be replaced.

[0033] In summary, when using this utility model, the carbon brush will not stop working directly due to wear because of the first elastic element 14, allowing maintenance personnel time to react. At the same time, because the first elastic element 14 is elastic, when the carbon brush needs to be removed for replacement, the baffle 15 can be pulled to deform and elongate the first elastic element 14, so that even if the carbon brush is partially worn, the connection between the carbon brush and the baffle 15 can still be pulled to a position where maintenance personnel can separate it, thus making it more convenient and quick to replace the carbon brush.

[0034] Example 2

[0035] Reference Figures 1-2 In the second embodiment of this utility model, the outer wall of the first frame 11 is provided with a fixing plate 111, the outer wall of the fixing plate 111 is provided with a first fixing groove 112, and two fixing plates 111 are provided on the outer wall of the first frame 11.

[0036] When the first frame 11 is a cuboid, two fixing plates 111 are respectively set on other surfaces of the outer wall of the first frame 11 that are not the surface where the first placement groove 12 is located, and there are no two adjacent surfaces. The fixing groove 112 is opened on the outer wall of the fixing plate 111. The fixing groove 112 allows the fixing component to pass through. The fixing groove 112 makes it easy for the connection structure to be fixed with external components. The number of fixing plates 111 is two to make the fixing effect more stable.

[0037] Furthermore, the baffle 15 is provided with sliding plates 151 at both ends, and the sliding plates 151 slide through the first sliding groove 13.

[0038] The baffle 15 is a circular plate with two identical rectangular plates, namely sliding plates 151. The connection point of the two sliding plates 151 on the circular plate is the diameter of the circular plate. When the baffle 15 slides through the first sliding groove 13, the sliding plates 151 at both ends actually slide in the first sliding groove 13 respectively. Using a circular plate as the part connected to the carbon brush can increase the contact area between the carbon brush and the baffle 15, making the connection between the carbon brush and the connection structure more stable.

[0039] Furthermore, two of the first sliding grooves 13 are formed on the outer wall of the first frame 11.

[0040] The first sliding groove 13 is provided through the outer wall of the first frame 11 on other surfaces that are not the surface where the first placement groove 12 is located, and there are no two adjacent surfaces. The purpose of providing two grooves is to allow the sliding plates 151 at both ends of the baffle 15 to be placed into one of the first sliding grooves 13 so that the two ends of the baffle 15 are balanced when sliding.

[0041] In use, first slide the sliding plates 151 at both ends of the baffle 15 into the first sliding groove 13, pull the baffle 15 out towards the first placement groove 12 and connect the carbon brush to the baffle 15. After the carbon brush is connected to the baffle 15, release the pull on the baffle 15, place the connection structure in the working position, and pass the fixing component through the fixing groove 112 to fix it. When the carbon brush is used for a long time or abnormal wear occurs, the structure will not immediately lose its working ability due to the presence of the first elastic element 14, but it still needs to stop working. In some cases, when the carbon brush is worn too badly and completely enters the first placement groove 12, the user can use the elasticity of the first elastic element 14 and pull the baffle 15 that slides inside the first sliding groove 13. When the user pulls the baffle 15 to a position where the carbon brush can be easily separated, the connection between the carbon brush and the baffle 15 can be disconnected, and a new carbon brush can be replaced.

[0042] In summary, when using this utility model, the balanced structure at both ends makes pulling the baffle 15 more stable, and the first elastic element 14 will not stop working directly due to wear, leaving time for maintenance personnel to react. When it is necessary to replace the carbon brush, the baffle 15 can be pulled to deform and extend the first elastic element 14, so that even if the carbon brush is partially worn, the connection between the carbon brush and the baffle 15 can still be pulled to a position where maintenance personnel can separate it, thus making it more convenient and quick to replace the carbon brush.

[0043] Example 3

[0044] Reference Figures 1-3 This is the third embodiment of the present invention. Compared with the previous embodiment, this embodiment further provides a carbon brush bracket with alarm function, including a connecting structure 1 and a protective shell 21. The protective shell 21 is disposed on the outer wall of the first frame 11. A stationary contact 22 is disposed on the inner wall of the protective shell 21. A moving contact 23 is disposed on the inner wall of the protective shell 21. A moving connecting rod 24 is disposed through the outer wall of the moving contact 23. The moving connecting rod 24 is connected to a sliding plate 151.

[0045] The protective shell 21 is fixed to the outer wall of the first frame 11. The shape of the protective shell 21 can be a sphere, a cube, etc. In this embodiment, a cuboid is selected. The stationary contact 22 is fixed to the inner wall of the protective shell 21. The moving contact 23 is driven by the sliding plate 151 through the moving connecting rod 24 to move inside the protective shell 21. When the moving contact 23 contacts different stationary contacts 22, it represents different states of the carbon brush. The moving contact 23 should be able to represent at least two states under different contact conditions. The two states are the state where the carbon brush can continue to be used and the state where the carbon brush is severely worn and needs to be replaced. The number of stationary contacts 22 and moving contacts 23 can be changed according to different user requirements.

[0046] Furthermore, four stationary contacts 22 are provided on the inner wall of the protective housing 21, and the stationary contacts 22 are connected to terminals 25. Two moving contacts 23 are provided on the inner wall of the protective housing 21, and the moving contacts 23 are slidably connected to the moving connecting rod 24.

[0047] The four stationary contacts 22 are respectively located at the four corners of the inner wall of the protective housing 21. Along the direction from the inside of the first placement groove 12 to the groove opening, the four stationary contacts 22 are arranged in pairs within the same group and parallel to each other at the four corners of the inner wall of the protective housing 21. One of the two moving contacts 23 is close to the groove opening of the first placement groove 12 and the other is far away from the groove opening of the first placement groove 12. The terminal 25 connected to the group of stationary contacts 22 far away from the sliding plate 151 outputs a signal indicating that the carbon brush is normal when the moving contact 23 contacts the stationary contact 22. When the terminal 25 connected to the group of stationary contacts 22 close to the sliding plate 151 outputs a signal indicating that the carbon brush is worn and needs to be replaced when the moving contact 23 contacts the stationary contact 22.

[0048] Furthermore, the outer wall of the motion link 24 is provided with a second elastic element 241, and the two ends of the second elastic element 241 are respectively connected to the sliding plate 151 and the protective shell 21.

[0049] The second elastic element 241 needs to be a component with elasticity, such as an airbag or a spring. The second elastic element 241 connects the sliding plate 151 and the protective shell 21.

[0050] Furthermore, the outer wall of the motion link 24 is provided with a third elastic element 242, and each end of the third elastic element 242 is connected to a motion contact 23.

[0051] The third elastic element 242 needs to be a component with elasticity, such as an airbag or a spring. The third elastic element 242 connects the two moving contacts 23 between the two moving contacts 23.

[0052] Furthermore, the protective shell 21 is fixedly connected to the first frame 11, and two protective shells 21 are provided on the outer wall of the first frame 11.

[0053] The protective shell 21 can be fixedly connected to the first frame 11 by bolts, welding, etc. The protective shell 21 is fixedly connected to other surfaces on the outer wall of the first frame 11 that are not the surface where the first placement slot 12 is located, and there are no two adjacent surfaces.

[0054] Furthermore, a first limiting block 243 is fixedly connected to the outer wall of the motion link 24, and the first limiting block 243 is disposed at the end of the motion contact 23 near the sliding plate 151; a second limiting block 244 is fixedly connected to the outer wall of the motion link 24, and the second limiting block 244 is disposed at the end of the motion contact 23 away from the sliding plate 151.

[0055] The first limiting block 243 can be fixedly connected to the moving link 24 by means of bolt and nut connection, welding, etc., and the second limiting block 244 can be fixedly connected to the moving link 24 by means of bolt and nut connection, welding, etc. The first limiting block 243 and the second limiting block 244 can limit the movement range of the moving contact 23.

[0056] In use, first slide the sliding plates 151 at both ends of the baffle 15 into the first sliding groove 13, then pull the baffle 15 out towards the first placement groove 12 and connect the carbon brush to the baffle 15. After the carbon brush is connected to the baffle 15, release the pull on the baffle 15, place the connection structure in the working position, and pass the fixing component through the fixing groove 112 to fix it. The carbon brush enters the working state. At this time, the other end of the carbon brush that is not in contact with the baffle 15 is in contact with the fixing component. The carbon brush is in contact with the fixing component, and the carbon brush belt... The moving baffle 15 moves into the first placement groove 12, driving the moving connecting rod 24 to move into the groove of the first placement groove 12. The first elastic element 14, the second elastic element 241, and the third elastic element 242 are compressed. At this time, the moving contact 23 away from the sliding plate 151 contacts a set of stationary contacts 22 away from the sliding plate 151, indicating that the carbon brush is working normally. At this time, the terminal 25 outputs a signal indicating that the carbon brush is normal. When the carbon brush is longer, the moving contact 23 away from the sliding plate 151 contacts the stationary contact 22 away from the sliding plate 151. When a set of stationary contacts 22 of the sliding plate 151 comes into contact, the third elastic element 242 is further compressed to accommodate the length of the carbon brush. As the carbon brush gradually wears down, the moving contact 23 near the sliding plate 151 will get closer and closer to the stationary contact 22 of the sliding plate 151. When the moving contact 23 near the sliding plate 151 comes into contact with the stationary contact 22 near the sliding plate 151, it means that the carbon brush has worn down to the point where it needs to be replaced. At this time, the terminal connected to the stationary contact 22 outputs a signal indicating that the carbon brush is worn down and needs to be replaced. When the carbon brush has been used for a long time or has abnormal wear, the structure will not immediately lose its working ability due to the presence of the first elastic element 14, but it still needs to stop working. When the carbon brush is worn so badly that it completely enters the first placement groove 12, the user can use the elasticity of the first elastic element 14 to pull the baffle 15 that slides inside the first sliding groove 13. When the user pulls the baffle 15 to a position where the carbon brush can be easily separated, the connection between the carbon brush and the baffle 15 can be disconnected, and a new carbon brush can be replaced.

[0057] In summary, when using this utility model, the status of the carbon brush can be confirmed by the different signals output by different terminals 25. The first elastic element 14 will not stop working directly due to wear, allowing maintenance personnel time to react. When the carbon brush needs to be replaced, the baffle 15 can be pulled to deform and extend the first elastic element 14, so that even if the carbon brush is partially worn, the connection between the carbon brush and the baffle 15 can still be pulled to a position where maintenance personnel can separate them, thus making it more convenient and quick to replace the carbon brush.

[0058] Example 4

[0059] Referring to the figure, this is the fourth embodiment of the present invention, which provides a different connection method between the motion link 24 and the motion contact 23 compared to the previous embodiment.

[0060] The first limiting block 243 and the second limiting block 244 are both fixedly connected to the moving link 24 by threaded connections.

[0061] In use, both the first limit block 243 and the second limit block 244 can be moved on the moving link 24 via threaded connection. When using threaded connection, the movement distance of the first limit block 243 and the second limit block 244 on the moving link 24 can be accurate to the distance of one thread. At this time, the reaction range of the alarm function can be adjusted by controlling the movement distance of the first limit block 243 and the second limit block 244. That is, in actual use, if the carbon brush is long, the first limit block 243 and the second limit block 244 can be rotated to move closer to each other. At this time, because the first limit block 243 and the second limit block 244 are... The two limit blocks 244 move closer together, thereby squeezing the two moving contacts 23 closer together. When the two moving contacts 23 move closer together, the third elastic element 242 is squeezed. At this time, the moving contact 23 that is close to the sliding plate 151 is farther away from the sliding plate 151 than before adjustment, and the moving contact 23 that is far away from the sliding plate 151 is closer to the sliding plate 151 than before adjustment. At this time, the reaction range of the alarm function becomes higher at the lower limit and lower at the upper limit than before. When it is necessary to finely adjust the upper and lower limits of the reaction range, it is only necessary to rotate the first limit block 243 and the second limit block 244 to achieve the adjustment.

[0062] In summary, when the first limit block 243 and the second limit block 244 are threadedly connected to the motion link 24, the upper and lower limits of the minimum unit pitch can be adjusted through the threaded connection. Adjusting the upper and lower limits through the first limit block 243 and the second limit block 244 is more convenient and faster than directly replacing the motion link 24 of different sizes.

[0063] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0064] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0065] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A connection structure (1), characterized in that: include A first frame (11), a first placement groove (12) disposed on the outer wall of the first frame (11), a first sliding groove (13) disposed on the inner wall of the first placement groove (12), a first elastic member (14) disposed on the inner wall of the first placement groove (12), and a baffle (15) disposed at one end of the first elastic member (14), wherein the baffle (15) slides in the first sliding groove (13).

2. The connection structure as described in claim 1, characterized in that: The first frame (11) has a fixing plate (111) on its outer wall, and the fixing plate (111) has a first fixing groove (112) on its outer wall. There are two fixing plates (111) on the outer wall of the first frame (11).

3. The connection structure as described in claim 2, characterized in that: The baffle (15) has sliding plates (151) at both ends, and the sliding plates (151) slide through the first sliding groove (13).

4. The connection structure as described in claim 3, characterized in that: Two of the first sliding grooves (13) are provided on the outer wall of the first frame (11).

5. A carbon brush holder (2) with alarm function, characterized in that: Includes the connection structure (1) according to any one of claims 1 to 4, and a protective housing (21), the protective housing (21) being disposed on the outer wall of the first frame (11), a stationary contact (22) disposed on the inner wall of the protective housing (21), a moving contact (23) disposed on the inner wall of the protective housing (21), and a moving connecting rod (24) penetrating the outer wall of the moving contact (23), the moving connecting rod (24) being connected to the sliding plate (151).

6. The carbon brush holder with alarm function as described in claim 5, characterized in that: Four stationary contacts (22) are provided on the inner wall of the protective housing (21), and the stationary contacts (22) are connected to terminals (25). Two moving contacts (23) are provided on the inner wall of the protective housing (21), and the moving contacts (23) are slidably connected to the moving connecting rod (24).

7. The carbon brush holder with alarm function as described in claim 6, characterized in that: The outer wall of the motion link (24) is provided with a second elastic element (241), and the two ends of the second elastic element (241) are respectively connected to the sliding plate (151) and the protective shell (21).

8. The carbon brush holder with alarm function as described in claim 7, characterized in that: The outer wall of the motion link (24) is provided with a third elastic element (242), and each end of the third elastic element (242) is connected to a motion contact (23).

9. The carbon brush holder with alarm function as described in claim 8, characterized in that: The protective shell (21) is fixedly connected to the first frame (11), and two protective shells (21) are provided on the outer wall of the first frame (11).

10. The carbon brush holder with alarm function as described in claim 9, characterized in that: The outer wall of the motion link (24) is fixedly connected to a first limiting block (243), which is located at the end of the motion contact (23) near the sliding plate (151). The outer wall of the motion link (24) is fixedly connected to a second limiting block (244), which is located at the end of the motion contact (23) away from the sliding plate (151).

Images