Carbon brush holder for electric conduction of driving motor of electric vehicle

Abstract

The utility model relates to a carbon brush holder for electric conduction of a driving motor of an electric vehicle, the carbon brush holder is circumferentially arranged on a mounting disc, a shaft hole is arranged in the middle of the mounting disc, and the carbon brush holder comprises at least one group of matched bases and elastic components; the elastic component is provided with at least two supporting legs, the two supporting legs clamp the base, and the base is provided with a plurality of clamping positions matched with the first supporting legs. Wherein at least one working clamping position exists, when one supporting leg of the elastic component is embedded into the working clamping position, the base and the elastic component do not interfere with the rotating shaft in the shaft hole, the two supporting legs are arranged at the temporary clamping position to clamp the base, and the carbon brush is clamped for integrated transportation; the supporting legs are prevented from interfering the rotating shaft.

Description

Technical Field

[0001] The utility model relates to a carbon brush holder for conducting electricity of an electric vehicle drive motor. Background Art

[0002] The carbon brush holder of an electric vehicle drive motor is an indispensable and extremely crucial component in the motor system. It is installed inside the motor and forms an axial current path through the contact between the carbon brush and the motor rotating shaft. When the motor is working, the carbon brush releases the axial current to the motor housing.

[0003] In the prior art, after the carbon brush holder is installed, additional personnel or equipment actions are required to release the carbon brush to the working position, and the blind installation of the motor main shaft (that is, no additional personnel or equipment actions are required to release the carbon brush to the working position) cannot be achieved. The existing carbon brush release structure with main shaft linkage blind installation has the defect of interfering with the motor rotating shaft, that is, after the elastic tongue piece is lifted, it will still interfere with the motor rotating shaft, and there is a risk of generating metal chips and noise due to friction. Therefore, a carbon brush holder that is convenient for transportation / blind installation and does not interfere with the motor rotating shaft after installation is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art, and provide a carbon brush holder for conducting electricity of an electric vehicle drive motor. By setting in the temporary clamping position, two legs clamp the base, clamp the carbon brush for integrated transportation, and prevent the legs from interfering with the rotating shaft through the position conversion method of embedding the legs. The following is the specific scheme:

[0005] A carbon brush holder for conducting electricity of an electric vehicle drive motor, the carbon brush holder is circumferentially arranged on the mounting plate, and a shaft hole is provided in the middle of the mounting plate. The carbon brush holder includes at least one set of matching base and elastic component;

[0006] The elastic component is provided with at least two legs, the two legs clamp the base, and a plurality of clamping positions matching the first leg are provided on the base;

[0007] Among them, there is at least one working clamping position. When one leg of the elastic component is embedded in the working clamping position, neither the base nor the elastic component interferes with the rotating shaft in the shaft hole. At this time, the first leg does not contact the carbon brush in the carbon brush holder, that is, the effect of carbon brush release is achieved.

[0008] There is at least one temporary clamping position on the base. When one leg of the elastic component is embedded in the temporary clamping position, part of the elastic component interferes with the rotating shaft in the shaft hole when installing the motor rotating shaft; when the first leg is located in the temporary clamping position, part of the first leg contacts the front end surface of the carbon brush, that is, the effect of carbon brush fixation is achieved. Among them, the temporary clamping position and the working clamping position have an up-and-down relationship.

[0009] The base is also provided with a notch. When one leg of the elastic component is embedded in the working clamping position, a part of this leg is located within the notch, which facilitates the cooperation with the leg after the placement position is changed.

[0010] A part of this elastic component interferes with the rotating shaft within the shaft hole; there is an up-and-down relationship between the temporary clamping position and the working clamping position. The setting of this structure can facilitate on-site installation and debugging by the user. Specifically, it can be through the relative movement process of the rotating shaft and the mounting disc, thereby forcing the first leg to move from the temporary clamping position to the working clamping position. To facilitate the realization of this effect, further, the depth of the card slot at the temporary clamping position is less than that at the working clamping position, and the torques of the two are also different.

[0011] The material of the base is brass, and the material of the mounting disc is aluminum alloy.

[0012] Beneficial effects: Using legs to clamp the carbon brush and being able to directly release the carbon brush during the installation process, so that no additional personnel or equipment actions are required to release the carbon brush to the working position after the installation of this carbon brush holder, making the installation more convenient;

[0013] Since the elastic component can clamp and has the characteristic of elasticity, the legs bend inward at the working clamping position. Also, due to the method of embedding, the legs that block the contact between the carbon brush and the rotating shaft are displaced and fixed. After installation, the legs fit closely with the working clamping position and do not protrude from the shaft hole, effectively preventing the contact between the legs and the rotating shaft from causing noise and danger. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a carbon brush holder for conducting electricity in an electric vehicle drive motor in the transportation state;

[0015] Figure 2 is a schematic structural diagram of a carbon brush holder for conducting electricity in an electric vehicle drive motor in the installed state;

[0016] Figure 3 is a front view structural diagram of the base of a carbon brush holder for conducting electricity in an electric vehicle drive motor;

[0017] Figure 4 is Figure 3 the sectional structural diagram taken along the A-A direction in

[0018] Figure 5 is an exploded structural diagram of a carbon brush holder for conducting electricity in an electric vehicle drive motor;

[0019] Figure 6 is a three-dimensional structural diagram of the leg of a carbon brush holder for conducting electricity in an electric vehicle drive motor when in the temporary clamping position;

[0020] Figure 7It is a three-dimensional structural schematic diagram of the leg of a carbon brush holder for conducting electricity in an electric vehicle drive motor when in the working clamping position;

[0021] Figure 8 It is a front-view structural schematic diagram of the leg of a carbon brush holder for conducting electricity in an electric vehicle drive motor when in the temporary clamping position;

[0022] Figure 9 It is a front-view structural schematic diagram of the leg of a carbon brush holder for conducting electricity in an electric vehicle drive motor when in the working clamping position;

[0023] In the figure: 1. mounting plate, 2. carbon brush, 3. shaft hole, 4. base, 5. elastic member, 51. leg, 6. working clamping position, 7. temporary clamping position, 8. notch, 9. rotating shaft, 10. first leg. Specific embodiments

[0024] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation to the protection scope of the present utility model.

[0025] In this embodiment:

[0026] Please refer to Figures 1 - 9 , a carbon brush holder for conducting electricity in an electric vehicle drive motor. The carbon brush holder is circumferentially arranged on the mounting plate 1. A shaft hole 3 is provided in the middle of the mounting plate 1. The carbon brush holder includes at least one set of matching base 4 and elastic member 5; the elastic member 5 is provided with at least two legs 51, and the two legs 51 clamp the base 4. A plurality of clamping positions matching the first leg 10 are provided on the base 4; among them, there is at least one working clamping position 6. When one leg 51 of the elastic member 5 is inserted into the working clamping position 6, neither the base 4 nor the elastic member 5 interferes with the rotating shaft 9 in the shaft hole 3.

[0027] There is at least one temporary clamping position 7 on the base 4. When one leg 51 of the elastic member 5 is inserted into the temporary clamping position 7, a part of the elastic member 5 interferes with the rotating shaft 9 in the shaft hole 3; when the first leg 10 is located in the temporary clamping position 7, a part of the first leg 10 contacts the front end surface of the carbon brush 2. Among them, the temporary clamping position 7 and the working clamping position 6 have an up-down relationship.

[0028] The groove depth of the temporary clamping position 7 is less than the groove depth of the working clamping position 6; the elastic member 5 is a torsion spring or an elastic lever; a notch 8 is also provided on the base 4. When one leg 51 of the elastic member 5 is inserted into the working clamping position 6, this leg 51 is partially located in the notch 8; when one leg 51 of the elastic member 5 is inserted into the working clamping position 6, the other leg 51 of the elastic member 5 abuts against the tail of the carbon brush 2; the material of the base 4 is brass; the material of the mounting plate 1 is aluminum alloy.

[0029] Implementation example:

[0030] When the device is in the transportation state, as Figure 1 shown, a part of the first leg 10 contacts the front end surface of the carbon brush 2, which achieves the effect of fixing the carbon brush 2. When the device is in the working state, as Figure 2 shown, precisely because the leg 51 can clamp and has the characteristic of elasticity, the leg 51 will bend inward at the working clamping position 6 and will not contact the rotating shaft 9; only the elastic characteristic of the leg 51 cannot solve the problem that the leg 51 will interfere with the rotating shaft 9, because one of the legs 51 needs to give way to the forward movement of the carbon brush 2 at the working clamping position 6. Therefore, a switching method from the temporary clamping position 7 to the working clamping position 6 is required. For example, the switching method embedded in the card slot in this embodiment. In practice, through the relative movement process of the rotating shaft 9 and the mounting disc 1, the first leg 10 can be forced to move from the temporary clamping position 7 to the working clamping position 6, achieving a faster installation effect.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A carbon brush holder for the conductive use of an electric vehicle drive motor, characterized in that, The carbon brush holder is circumferentially arranged on the mounting disc, and a shaft hole is provided in the middle of the mounting disc. The carbon brush holder includes at least one set of matching base and elastic member; The elastic member is provided with at least two legs, and the two legs clamp the base. The base is provided with a plurality of clamping positions matching the first leg; Among them, there is at least one working clamping position. When one leg of the elastic member is inserted into the working clamping position, neither the base nor the elastic member interferes with the rotating shaft in the shaft hole.

2. The carbon brush holder for conducting electricity of the electric vehicle drive motor according to claim 1, wherein , there is at least one temporary clamping position on the base. When one leg of the elastic member is inserted into the temporary clamping position, part of the elastic member interferes with the rotating shaft in the shaft hole when installing the motor rotating shaft; when the first leg is located in the temporary clamping position, part of the first leg contacts the front end face of the carbon brush, and there is an up and down relationship between the temporary clamping position and the working clamping position.

3. The carbon brush holder for an electric vehicle drive motor according to claim 2, wherein, The groove depth of the temporary clamping position is less than the groove depth of the working clamping position.

4. The carbon brush holder for conducting electricity of the electric vehicle drive motor according to claim 1, characterized in that, The elastic member is a torsion spring or an elastic lever.

5. The carbon brush holder for the conductive use of the electric vehicle drive motor according to any one of claims 1-4, characterized in that, The base is further provided with a notch. When one leg of the elastic member is inserted into the working clamping position, part of the leg is located in the notch.

6. The carbon brush holder for an electric vehicle drive motor according to claim 5, characterized in that, When one leg of the elastic member is inserted into the working clamping position, the other leg of the elastic member abuts against the tail of the carbon brush.

7. The carbon brush holder for the conductive use of the electric vehicle drive motor according to claim 1, characterized in that The material of the base is brass.

8. The carbon brush holder for the electric vehicle drive motor according to claim 1, characterized in that, The material of the mounting disc is aluminum alloy.

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