Electric brush plate system for vehicle motor and vehicle motor system

Abstract

The invention relates to an electric brush plate system for a vehicle motor and a vehicle motor system. The electric brush plate system comprises an electric brush plate, an electric brush, an inductance element and a plug, the electric brush plate comprises an upper surface, and the electric brush and the inductance element are arranged on the upper surface; the electric brush is electrically connected with an inductance element through an electric brush arm, and the inductance element is electrically connected with a corresponding plug terminal of the plug; and one end of the brush arm is mounted at the radial outer side end of the brush. According to the invention, the other end of the brush arm is plastic-coated in the brush plate. The vehicle motor system comprises the electric brush plate system. The electric brush plate system is easy to assemble and low in manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of electric machines. In particular, in a first aspect, the present invention relates to a brush plate system for a vehicle electric machine. In a second aspect, the present invention relates to a vehicle electric machine system comprising the brush plate system. BACKGROUND

[0002] Figure 1A An existing brush plate system 1' is shown, for example, for a glass lift. The brush plate system 1' comprises a brush plate 10', a brush 20' and a brush arm 30', the brush 20' being arranged radially with its outer end mounted on one end of the brush arm 30', which is riveted at the other end to a brush arm holding plate 40', which is press-fitted into a holding groove 11' provided on the brush plate 10'. Furthermore, the brush arm 30' is glued on the end where the brush 20' is mounted with a damping block 50', which is arranged radially outwardly to dampen the movement of the brush arm 30'. The brush arm 30' is further provided with a connection terminal 31' for connection to an inductive element (not shown).

[0003] In the manufacture of the present brush plate system, the brush plate is usually first molded, then the brush arm is riveted to the brush arm holding plate, and then the brush arm holding plate is press-fitted into the holding groove of the brush plate, whereby the brush arm is assembled to the brush plate. This requires a riveting and press-fitting procedure, and a separate tooling for the press-fitting procedure. SUMMARY

[0004] It is an object of the present invention to provide an improved brush plate system, which is easy to assemble and reduces the manufacturing costs.

[0005] A brush plate system for a vehicle electric machine, comprising a brush plate, a brush, an inductive element and a plug, wherein the brush plate comprises an upper face, the brush and the inductive element are arranged on the upper face; the brush is electrically connected to the inductive element via a brush arm, the inductive element is electrically connected to a corresponding plug terminal of the plug; the brush is arranged radially, the brush arm is mounted at one end to the radially outer end of the brush, characterized in that the other end of the brush arm is overmolded in the brush plate.

[0006] The idea of the present invention is to assemble the brush arm at the same time as the brush plate is molded, so that the brush arm holding plate is no longer needed, whereby the press-fitting of the brush arm holding plate and the riveting of the brush arm are eliminated.

[0007] Preferably, a beveled guide is provided on both the upper face and the lower face of the brush plate, in which the brush arm is overmolded. With this arrangement, the brush arm can be easily guided into the mold at the time of overmolding.

[0008] According to an embodiment, the brush arm is provided with a connection terminal which extends upwards beyond the guiding portion on the upper side of the brush plate and is connected to the inductive element.

[0009] According to an embodiment, the brush arm is further provided with a jig fixing end which extends downwards beyond the guiding portion on the lower side of the brush plate. With this arrangement, the brush arm can be fixed in the mold.

[0010] Preferably, a stop step is provided at the transition between the connection terminal and the main body portion of the brush arm, which is flush with the guiding portion on the upper side of the brush plate. Similarly, a stop step is provided at the transition between the jig fixing end and the main body portion of the brush arm, which is flush with the guiding portion on the lower side of the brush plate. When the brush plate is molded, the stop steps abut against the mold. With this arrangement, the brush arm is ensured to be positioned correctly when it is overmolded in the brush plate, and the brush arm is prevented from moving.

[0011] According to an embodiment, the brush plate system comprises two brushes and two inductive elements, which are arranged diametrically opposite to each other.

[0012] The present application also provides a vehicle motor system comprising the brush plate system as described above.

[0013] The assembly procedure of the brush plate system is as follows. First, the brush arm is overmolded in the brush plate when the brush plate is molded. Then, the brush is mounted on the brush arm. Next, the damping block is adhered to the brush arm. After that, the inductive element is electrically connected to the brush arm by welding.

[0014] Compared with the conventional brush plate system, the brush plate system of the present application has reduced manufacturing cost because the brush arm retaining plate is omitted. Moreover, the assembly of the brush plate system is easier and the assembly time is shortened because the two assembly procedures of pressing the brush arm retaining plate into the retaining groove on the brush plate and riveting the brush arm to the brush arm retaining plate are omitted. Furthermore, the position of the brush arm can be more accurately controlled because the stop steps and the guiding portions are provided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Embodiments of the present application will be explained in more detail with reference to the accompanying drawings, in which:

[0016] Figure 1A is a schematic perspective view of a brush plate system of the prior art;

[0017] Figure 1B is Figure 1A is an enlarged view of the dashed box portion of

[0018] Figure 1C is a cross-sectional schematic view of the dashed box portion of Figure 1B

[0019] Figure 2A ​is a schematic perspective view of a brush plate system according to an embodiment of the present application, wherein the inductive elements and the plug are not shown;

[0020] Figure 2B is a partial view of the dashed box portion of Figure 2A

[0021] Figure 2C is a schematic view of the portion shown in Figure 2B

[0022] Figure 3A is another schematic perspective view of a brush plate system according to an embodiment of the present application, wherein the inductive elements and the plug are shown;

[0023] Figure 3B is a partial view of the dashed box portion of Figure 3A

[0024] Figure 4A is a partial schematic perspective view of a brush plate system according to another embodiment of the present application;

[0025] Figure 4B is a schematic view of the portion shown in Figure 4A

[0026] In the drawings, the embodiments of the present application are shown in a simplified manner in order to illustrate the principle of the present application. Similar reference numerals are used to refer to similar parts throughout the figures.

[0027] List of reference numerals

[0028] 1' brush plate system

[0029] 10' brush plate

[0030] 11' holding groove

[0031] 20' brush

[0032] 30' brush arm

[0033] 31' connection terminal 31'

[0034] 40' brush arm holding plate

[0035] 50' damping block

[0036] 1 brush plate system

[0037] 10 brush plate

[0038] 11 guide portion

[0039] 12 guide portion

[0040] 20 brush

[0041] 30 brush arm​​​​

[0042] 31 connection terminal

[0043] 32 jig fixing portion

[0044] 40 inductive element

[0045] 41 terminal

[0046] 42 terminal

[0047] 50 damping block

[0048] 60 plug

[0049] 61 plug terminal

[0050] 62 plug terminal

[0051] 100 brush plate system

[0052] 110 brush plate

[0053] 111 guide portion

[0054] 112 guide portion

[0055] 130 brush arm

[0056] 131 connection terminal

[0057] 132 jig fixing portion

[0058] 133 stopper step

[0059] 134 stopper step DETAILED DESCRIPTION

[0060] In the following context, the terms "upper" and "lower" are used for the sake of clarity with reference to the side of the brush plate on which the brushes are arranged and the opposite side, respectively.

[0061] The application will be described below with reference to Figures 2A-3B Embodiments of the application are described.

[0062] As shown, the brush plate system 1 comprises a brush plate 10, two brushes 20, two inductive elements 40, and a plug 60 for electrical connection of the brushes 20. The brush plate 10 comprises an upper side on which the brushes 20 and the inductive elements 40 are arranged. The plug 60 has two plug terminals 61 and 62. The two brushes 20 and the two inductive elements 40 are arranged diametrically opposite to each other. Each inductive element 40 comprises two terminals 41 and 42, one of which 41 is electrically connected to a respective brush 20 via a respective brush arm 30, and the other of which 42 is electrically connected to a respective plug terminal 61 or 62 of the plug 60.

[0063] The brush plate 10 is provided with chamfered guides 11 and 12 on the upper and lower surfaces, respectively, which extend from the upper and lower surfaces, respectively, and which are chamfered outwardly from near the upper and lower ends of the brush arm 30.

[0064] The brush 20 is arranged radially with its outer end mounted on one end of the brush arm 30, the other end of which is molded into the brush plate 10.

[0065] The brush arm 30 is constructed of sheet material and has a connection terminal 31 which extends upwardly from the upper surface of the brush plate 10 beyond the guide 11 for connection to a terminal 41 of the inductive element 40 on the upper surface of the brush plate 10 (see Fig. 2). Figure 3B The brush arm 30 also has a tooling fixture 32 which extends downwardly from the lower surface of the brush plate 10 beyond the guide 12 to enable the brush arm 30 to be secured in a mold during molding of the brush plate 10.

[0066] In addition, the brush arm 30 is provided with a damper block 50 on the end where the brush 20 is mounted, the damper block 50 being arranged radially outwardly to dampen movement of the brush arm 30.

[0067] Figures 4A-4B A brush plate system 100 is shown which is another embodiment of the present application and is similar to the previous embodiment. As shown, the brush plate system 100 includes a brush plate 110 and a brush arm 130 which is molded into the brush plate 110 at one end. The brush arm 130 has a connection terminal 131 and a tooling fixture 132, and stop steps 133 and 134 are formed at the transitions between the connection terminal 131 and the tooling fixture 132 and the main portion of the brush arm 130, respectively (one stop step on each side of 131 and 132). In addition, the brush plate 110 is provided with chamfered guides 111 and 112 (one guide on each side of the stop steps) which extend from the upper and lower surfaces, respectively, and which are chamfered outwardly from flush with the stop steps 133 and 134, respectively.

[0068] In some cases, features disclosed in this application can be used without the other features. On the other hand, where necessary, features disclosed in this application can be combined to provide various combinations.

[0069] The phraseology and terminology used herein is for the purpose of description and not of limitation, therefore, any use of such phraseology and terminology is not intended to exclude any equivalents of the features shown and described herein from the scope of the application. There may be many alterations, modifications, and variations of the present application which are suitable to the extent of the disclosure. The application is intended to cover any alternatives, modifications, and variations of the present application falling within the scope of the claims.

Claims

1. A brush plate system for a vehicle electric motor comprising a brush plate, electric brushes, an inductive element and a plug, wherein, The brush plate comprises an upper face and an opposite lower face, the brushes and the inductor elements being arranged on the upper face; the brushes are electrically connected to the inductor elements via brush arms, the inductor elements being electrically connected to corresponding plug terminals of the plug; the brushes are arranged radially, the brush arms being mounted at one end to the radially outer ends of the brushes, characterized in that the other ends of the brush arms are overmoulded in the brush plate.

2. The brush plate system of claim 1, wherein, Chamfered guides are provided on both the upper face and the lower face of the brush plate, the brush arms being overmoulded in the guides.

3. The brush plate system of claim 2, wherein, The brush arms are provided with connection terminals which project upwards into the guides on the upper face of the brush plate and are connected to the inductor elements.

4. The brush plate system of claim 2, wherein, The brush arms are provided with tooling fixing ends which project downwards into the guides on the lower face of the brush plate.

5. The brush plate system of claim 3, wherein, A stop step is provided at the transition between the connection terminals and the main part of the brush arms, which is flush with the guides on the upper face of the brush plate.

6. The brush plate system of claim 4, wherein, A stop step is provided at the transition between the tooling fixing ends and the main part of the brush arms, which is flush with the guides on the lower face of the brush plate.

7. The brush plate system according to any one of claims 1-6, characterized in that, The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another.

8. A vehicle electric machine system characterized by comprising: The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the inductor elements being arranged diametrically opposite one another. The brush plate system comprises two brushes and two inductor elements, the brushes and the

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