Conductive terminal and conductive device using same
By designing a conductive terminal with crimp connection, the problems of high manufacturing cost and low degree of generalization of conductive brushes are solved, and the effects of cost reduction, generalization improvement and electrical corrosion improvement are achieved.
Patent Information
- Application Number
- CN202420157126.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-01-23
AI Technical Summary
The high manufacturing cost and low versatility of existing conductive brushes lead to the need to redesign and manufacture when adapting to new motors, increasing management costs.
A conductive terminal is designed, including a fixing frame and bristles, and is connected by crimping, which simplifies the manufacturing process and reduces costs. At the same time, through the cooperation of the conductive frame, the flexible installation of the conductive terminals is achieved.
It reduces the manufacturing difficulty and cost of conductive brushes, improves its generalization, simplifies the installation process, and effectively improves the electrical corrosion problem of bearings.
Smart Images
Figure CN222813951U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of motor technology, and in particular to a conductive terminal and a conductive device using the same. Background Art
[0002] For electric motor products, electrical corrosion of bearings caused by motor shaft current has always been a common problem in the motor industry. In order to improve the problem of electrical corrosion of bearings, improve the reliability of motors, and reduce the after-sales cost of motors, the methods of blocking and dredging are generally used in motor manufacturing. Among them, the blocking method includes installing insulating covers, insulating shafts, insulating bearings, etc. The dredging method includes installing conductive brushes, auxiliary bearings, conductive rings, etc. However, since the blocking method is very costly, the dredging method is often used.
[0003] In the existing degassing method, a conductive ring and a conductive brush are generally used together. However, the manufacturing cost of a single conductive brush on the market is still relatively high. When encountering a new motor that needs to be adapted, it is necessary to redesign and manufacture it, which invisibly increases the management cost, making the conductive brushes very unpopular. Utility Model Content
[0004] In order to improve the problems of high cost and low commonality of conductive brushes, the present application provides a conductive terminal and a conductive device using the same.
[0005] The present application provides a conductive terminal and a conductive device using the same, which adopts the following technical solutions:
[0006] A conductive terminal comprises a fixing frame and bristles arranged on the fixing frame, both of which are conductive; the fixing frame comprises a fixing block and a connecting sleeve arranged on the fixing block, the fixing block is penetrated by a fixing groove; when installed, the bristles are connected to the inner cavity of the connecting sleeve.
[0007] Preferably, the connecting sleeve is elastic, and the bristles and the connecting sleeve are fixed by crimping.
[0008] Preferably, there are one or more than two fixing grooves.
[0009] Preferably, the front end portion of the fixing block adopts an arc-shaped or polygonal structure.
[0010] Preferably, the connecting sleeve is provided with a through groove for the bristles to be placed into the inner cavity of the connecting sleeve.
[0011] A conductive device using a conductive terminal comprises a conductive frame, the conductive terminal is arranged on the conductive frame, and the fixing block is connected to the conductive frame.
[0012] Preferably, the fixing frame is detachably connected to the conductive frame.
[0013] Preferably, there may be a plurality of conductive terminals, which are spaced apart and arranged on the conductive frame.
[0014] In summary, the present application includes at least one of the following beneficial effects:
[0015] 1. The bristles and the connecting sleeve are crimped to achieve reliable connection. It can be regarded as the conductive terminal is produced and processed by a manufacturing process close to that of ordinary OT terminals. It not only reduces the manufacturing difficulty of the conductive brush, but also reduces the cost and is easy to install, making the conductive brush more applicable.
[0016] 2. The bristles and the connecting sleeve are fixed by crimping, which not only has high installation reliability, but also has simple installation method and is easy to manufacture;
[0017] 3. When in use, the conductive terminal can be directly installed on the motor by screws or rivets, and the conductive terminal is used to contact the motor shaft to conduct the shaft current to the fixed block. The fixed block contacts the non-rotor part of the motor and conducts the shaft current to the motor housing, blocking the shaft current from being conducted to the bearing, thereby improving the electrical corrosion problem of the bearing;
[0018] 4. When in use, the conductive terminal can also be installed on the motor with the help of a conductive frame, and the bristles on the conductive terminal can be used to contact the motor shaft and guide the shaft current to the motor housing, blocking the current from being transmitted to the bearing, thereby improving the electrical corrosion problem of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural diagram of the front end of the fixing block of the conductive terminal of the first embodiment of the present application being in an arc shape;
[0020] Figure 2 This is a schematic structural diagram of a rectangular parallelepiped at the front end of the fixing block in the first embodiment of the present application;
[0021] Figure 3 This is another structural schematic diagram of the embodiment 1 of the present application in which the front end of the fixing block is a rectangular parallelepiped;
[0022] Figure 4 This is a schematic diagram of the structure of the embodiment 1 of the present application highlighting the multi-point extrusion fixed connection sleeve and the bristles;
[0023] Figure 5 This is a schematic diagram of the structure of the embodiment 1 of the present application highlighting the multi-sided extrusion fixed connection sleeve and the bristles;
[0024] Figure 6 This is a schematic diagram of the structure of the embodiment 1 of the present application, in which the connecting sleeve and the bristles are squeezed and fixed on both sides;
[0025] Figure 7 This is a schematic diagram of the structure in which the conductive terminal of the second embodiment of the present application is installed on the conductive frame;
[0026] Figure 8 It is a schematic diagram of the structure in which the conductive terminal of Embodiment 3 of the present application is installed on the motor component.
[0027] Explanation of the reference numerals: 1. fixing frame; 11. fixing block; 111. fixing groove; 12. connecting sleeve; 121. tooth groove; 122. extrusion groove; 123. flat groove; 2. bristles; 3. conductive frame; 4. end cover. DETAILED DESCRIPTION
[0028] The following is combined with Figure 1-8 This application is described in further detail.
[0029] Embodiment 1:
[0030] A conductive terminal disclosed in an embodiment of the present application, referring to Figure 1 The conductive terminal includes a fixing frame 1 and bristles 2. The fixing frame 1 and the bristles 2 are both made of carbon fiber material and are conductive. When in use, the conductive brush contacts and conducts current to the fixing frame 1, and then conducts current to the motor housing through the conductive frame 3 for grounding, thereby blocking the current from being conducted to the bearing, thereby improving the electrical corrosion problem of the bearing.
[0031] Reference Figure 1 and Figure 2 as well as Figure 3 The fixing frame 1 includes a fixing block 11 and a connecting sleeve 12 fixed to the bottom end of the fixing block 11. A fixing groove 111 runs through the middle of the fixing block 11. The front end of the fixing block 11 is in an arc-shaped structure or a polygonal structure. For the fixing block 11 in an arc-shaped structure, a fixing groove 111 is generally opened for installation; during installation, the fixing block is installed at a specified position after passing through the fixing groove with a screw or a rivet, and the installation direction of the conductive terminal is limited by friction. In addition, for the fixing block 11 with a polygonal structure (mostly a rectangular parallelepiped or a cube structure), two fixing grooves 111 can be opened on the fixing block 11 according to actual needs, which are used to fix the conductive terminal and limit the installation direction of the conductive terminal.
[0032] Reference Figure 1 For the connection between the bristles 2 and the connecting sleeve 12, the connecting sleeve 12 is made of a conductive metal material (such as aluminum, copper, etc.), and the connecting sleeve 12 has a certain elasticity, that is, it has the ability to deform. Therefore, when installing the bristles 2, the bristles 2 are first inserted into the inner cavity of the connecting sleeve 12, and then fixed by crimping, and the processing method is simple. In addition, the crimping method adopts a manufacturing process close to that of ordinary OT terminals, which can reduce the manufacturing difficulty and cost.
[0033] Reference Figure 1Furthermore, the crimping method can be single-point crimping, that is, by extruding the peripheral side wall of the connecting sleeve 12, the crimping can be performed with the help of an existing extrusion tooling (with teeth) head, so that a long strip of tooth grooves 121 are extruded on the outer wall of the connecting sleeve 12, and the bristles 2 are fixed in the inner cavity of the connecting sleeve 12, which is not only convenient to install, but also has high connection reliability.
[0034] Reference Figure 4 Furthermore, the crimping method may be multi-point crimping, that is, the crimping is performed at equal intervals along the peripheral side wall of the connecting sleeve 12, so that the outer wall of the connecting sleeve 12 forms the extrusion grooves 122 distributed at equal intervals.
[0035] Reference Figure 5 Furthermore, the crimping method may be a multilateral crimping method, that is, the outer wall of the connecting sleeve 12 is squeezed on multiple sides so that more than three flat grooves 123 are formed on the outer wall of the connecting sleeve 12 .
[0036] Reference Figure 6 Furthermore, the crimping method can be extrusion on both sides, so that the connecting sleeve 12 is generally flat. When the bristles 2 are inserted into the inner cavity of the connecting sleeve 12, the outer wall of the connecting sleeve 12 is squeezed on both sides to form extrusion marks, and then the bristles 2 are fixed to the connecting sleeve 12.
[0037] Reference Figure 4 and Figure 5 as well as Figure 6 The structure of the fixing block 11 of the conductive terminal, the connection method of the connecting sleeve 12 and the bristles 2, etc. described above are processed using a manufacturing process close to that of ordinary OT terminals, which reduces the manufacturing difficulty and cost of the conductive terminal, and the installation method of the conductive terminal is simple and has a high degree of commonality.
[0038] Embodiment 2:
[0039] The present application discloses a conductive terminal and a conductive device using the same, referring to Figure 7 The conductive terminal and the conductive device used therein include a conductive frame 3 for installation on the motor. The conductive terminal is installed on the conductive frame 3. During installation, the fixing block 11 is detachably connected to the conductive frame 3 by inserting a bolt or a rivet into the fixing groove 111, so that the conductive terminal and the conductive frame 3 can be fixed. At the same time, the installation direction of the conductive terminal is limited by the friction force.
[0040] Reference Figure 7, further, the conductive frame 3 in the present application adopts a circular ring structure. According to the conductive requirements, multiple conductive terminals are distributed at intervals in the circumferential direction of the conductive frame 3 to ensure that the bristles 2 effectively contact the motor shaft. When in use, the connecting sleeve 12 and the fixing block 11 can be directly fixed to the non-rotor part of the motor, and then the bristles 2 are used to contact the motor shaft to conduct the shaft current to the connecting sleeve 12 and the fixing block 11, that is, the shaft current is conducted to the motor housing through the fixing frame 1 for grounding, thereby effectively blocking the shaft current from being conducted to the bearing, and then improving the electrical corrosion problem of the bearing.
[0041] Embodiment 3:
[0042] The difference between Example 3 of the present application and Example 2 is that: Figure 8 , the conductive terminal is installed on the end cover 4 of the motor (or other parts of the motor, such as the cover plate, etc.), and the bristles 2 can be installed on the motor without the aid of the conductive frame 3. In addition, the fixing block 11 of the conductive terminal installed on the motor end cover 4 can be installed according to the shape of the motor fixed position, and a suitable shape of the fixing block 11 can be selected to limit the installation direction of the conductive terminal, so as to ensure that the bristles 2 effectively contact the outer wall of the motor shaft and conduct the shaft current to the fixing frame 1, and the fixing frame 1 is used to conduct the shaft current to the motor housing for grounding, thereby blocking the current from being conducted to the bearing, thereby improving the electrical corrosion problem of the bearing.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A conductive terminal, characterized in that: The invention comprises a fixing frame (1) and bristles (2) arranged on the fixing frame (1), wherein the fixing frame (1) and the bristles (2) are both conductive; the fixing frame (1) comprises a fixing block (11) and a connecting sleeve (12) arranged on the fixing block (11), wherein the fixing block (11) is penetrated by a fixing groove (111); during installation, the bristles (2) are connected to the inner cavity of the connecting sleeve (12).
2. A conductive terminal according to claim 1, characterized in that: The connecting sleeve (12) is elastic, and the bristles (2) and the connecting sleeve (12) are fixed by means of crimping.
3. A conductive terminal according to claim 1, characterized in that: The fixing groove (111) has one or more than two.
4. A conductive terminal according to claim 1, characterized in that: The front end of the fixing block (11) adopts an arc-shaped or polygonal structure.
5. A conductive terminal according to claim 2, characterized in that: The connecting sleeve is provided with a through groove for the bristles to be placed in the inner cavity of the connecting sleeve.
6. A conductive device using the conductive terminal according to any one of claims 1 to 5, characterized in that: It comprises a conductive frame (3), and the fixing block (11) is mounted on the conductive frame (3).
7. The conductive device according to claim 6, characterized in that: The fixing frame (1) is detachably connected to the conductive frame (3).
8. The conductive device according to claim 6, characterized in that: There may be a plurality of conductive terminals, which are arranged at intervals on the conductive frame (3).