Disc brake fixing plate

Abstract

The present application relates to a disc brake fixing plate, which relates to the field of electric vehicles, and includes a fixing plate body, wherein a mounting hole for the wheel axle to pass through is provided in the center of the fixing plate body, and a positioning groove is provided on the side of the fixing plate body facing the wheel hub, wherein the size of the positioning groove is larger than the mounting hole, and the mounting hole is connected to the inner bottom wall of the positioning groove. A positioning ring is fixed to the fixing plate body on the back side of the positioning groove, and a plurality of bolt grooves for bolt installation are provided on the fixing plate body along the circumferential direction. The present application achieves an accurate positioning effect in the axial direction of the wheel axle by abutting the corresponding boss on the wheel axle through the positioning groove, thereby avoiding position deviation after welding; the disc brake fixing plate has a targeted reinforcement structure at the connection position, and there is no need to increase the overall thickness of the fixing plate body, thus saving materials.

Description

Technical Field

[0001] The present application relates to the field of electric vehicles, and in particular to a disc brake fixing plate. Background Art

[0002] The disc brake fixing plate on the electric vehicle is a component used to fix the disc brake disc. One side of the disc brake fixing plate is connected and fixed to the wheel hub, and the other side of the disc brake fixing plate is fixed to the disc brake disc.

[0003] The design patent with application number 201630025620.0 discloses a disc brake fixing plate, which is a part for electric vehicles or motorcycles. According to the drawings of the patent, the disc brake fixing plate is provided with three holes for bolt installation, and the disc brake disc is fixed by three bolts. The mounting hole in the middle of the disc brake fixing plate is used to connect with the wheel hub of the electric vehicle, and the center of the wheel hub of the electric vehicle is welded to the mounting hole of the disc brake fixing plate through a wheel axle.

[0004] The utility model patent with the announcement number CN204956821U discloses a disc brake pad fixing seat, including a fixing seat body whose lower end face is fixedly connected to the wheel axle, wherein a fixing block is provided at the circumferential position of the side end face of the fixing seat body toward the lower end face, and a limiting groove is provided on the fixing block along its own length direction, and a screw hole is provided in the limiting groove. The utility model provides a fixing block on the fixing seat body and a screw hole on the fixing block, so that the screw used to fix the disc brake pad during installation can well fix the disc brake pad without the need for a nut to cooperate.

[0005] With respect to the above-mentioned related technologies, the inventors believe that when the above-mentioned disc brake fixing plate is welded to the wheel axle, since the mounting hole of the disc brake fixing plate is a single cylindrical surface, the axial position of the disc brake fixing plate and the wheel axle cannot be accurately positioned, which is easy to cause position deviation after welding. Utility Model Content

[0006] The present application provides a disc brake fixing plate, which can be accurately positioned with the wheel axle to avoid position deviation after welding.

[0007] The present application provides a disc brake fixing plate, which adopts the following technical solution:

[0008] A disc brake fixing plate comprises a fixing plate body, wherein a mounting hole for a wheel axle to pass through is provided at the center of the fixing plate body, a positioning groove is provided on a side of the fixing plate body facing the wheel hub, the size of the positioning groove is larger than the mounting hole, and the mounting hole is connected to the inner bottom wall of the positioning groove.

[0009] By adopting the above technical solution, the fixing plate body contacts the wheel axle through the mounting hole, and abuts against the corresponding boss on the wheel axle through the positioning groove, thereby achieving accurate positioning effect in the axial direction of the wheel axle and avoiding position deviation after welding.

[0010] Optionally, a positioning ring is fixed to the back side of the positioning groove of the fixing plate body.

[0011] By adopting the above technical solution, the outer ring wall of the positioning ring is used to cooperate with the center hole of the disc brake disc, thereby achieving the effect of positioning the disc brake disc.

[0012] Optionally, the position of the positioning ring corresponds to the positioning groove, and the inner ring wall of the positioning ring is the hole wall of the mounting hole.

[0013] By adopting the above technical solution, the positioning ring can compensate for the reduction in thickness of the fixing plate body caused by the positioning groove, so that the mounting hole has a sufficiently large area to contact the wheel axle, ensuring a stable structure after welding.

[0014] Optionally, a plurality of bolt grooves for installing bolts are provided on the fixing plate body along the circumferential direction.

[0015] By adopting the above technical solution, the bolts are installed through the bolt grooves, and then the brake disc is installed.

[0016] Optionally, a protrusion is fixed to the fixing plate body on the back side of the bolt slot, and the position of the protrusion corresponds to the bolt slot.

[0017] By adopting the above technical solution, the raised portion is used to specifically increase the thickness of the position where the bolt is inserted, thereby improving the installation and fixing effect between the bolts, without increasing the overall thickness of the fixing plate body, thus saving materials.

[0018] Optionally, the bolt groove does not penetrate the fixing plate body, and a drilling positioning hole is opened at the center of the inner bottom wall of the bolt groove.

[0019] By adopting the above technical solution, the drilling positioning hole is used for positioning the drill bit, and then the drilling equipment is used to drill a hole in the bolt slot for the bolt to pass through. Since the hole is drilled later, the size can be determined later, and a hole of the required size can be drilled according to the requirements of product specifications for the bolt to pass through, or a threaded hole of the required size can be drilled for the bolt to be threaded, so as to improve the adaptability of the product.

[0020] Optionally, the drilling positioning hole is a tapered hole.

[0021] By adopting the above technical solution, the tapered drilling positioning hole is conveniently matched with the shape of the drill tip, thus achieving a better positioning effect and preventing the drill from drilling off-center.

[0022] Optionally, an outer notch of the positioning groove is provided with a chamfer or a rounded corner.

[0023] By adopting the above technical solution, the chamfer or fillet forms a regular weld between the axle and the fixing plate body, and the metal produced by welding is filled into the weld at the chamfer or fillet, making the welding of the axle and the fixing plate body more stable.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The positioning groove abuts against the corresponding boss on the axle to achieve accurate positioning in the axial direction of the axle, thus avoiding position deviation after welding;

[0026] 2. The disc brake fixing plate has a targeted reinforcement structure at the connection position, which does not need to increase the overall thickness of the fixing plate body, saving materials;

[0027] 3. Through the bolt groove, holes of the required size can be drilled for the bolts to pass through, or threaded holes of the required size can be drilled for the bolts to be threaded, so as to improve the adaptability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a front perspective view of the disc brake fixing plate of the first embodiment;

[0029] Figure 2 is a reverse perspective view of the disc brake fixing plate of the first embodiment;

[0030] Figure 3 is a cross-sectional view of the disc brake fixing plate of the first embodiment;

[0031] Figure 4 is a three-dimensional diagram of a disc brake fixing plate of the second embodiment;

[0032] Figure 5 It is an exploded view of the assembly of the disc brake fixing plate of the second embodiment.

[0033] Explanation of the reference numerals: 1. fixing plate body; 2. mounting hole; 21. positioning groove; 3. positioning ring; 4. bolt groove; 41. drilling positioning hole; 5. raised portion; 6. chamfer or rounded corner. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] Embodiment 1:

[0036] Reference Figure 1 and Figure 2 , a disc brake fixing plate disclosed in the present application, comprises a fixing plate body 1, and a mounting hole 2 for the wheel axle to pass through is provided at the center of the fixing plate body 1. A positioning groove 21 is provided on the side of the fixing plate body 1 facing the wheel hub, and the size of the positioning groove 21 is larger than the mounting hole 2, and the mounting hole 2 is connected to the inner bottom wall of the positioning groove 21. The positioning groove 21 and the mounting hole 2 are both circular, and the central axes of the positioning groove 21 and the mounting hole 2 are arranged to coincide.

[0037] Reference Figure 1 and Figure 3 The fixing plate body 1 is fixed with a positioning ring 3 on the back of the positioning groove 21. The outer ring wall of the positioning ring 3 is used to cooperate with the middle hole of the disc brake disc to position the disc brake disc. The position of the positioning ring 3 corresponds to the positioning groove 21. The inner ring wall of the positioning ring 3 is the hole wall of the mounting hole 2. Since the positioning groove 21 is opened on one side of the fixing plate body 1, the thickness of the fixing plate body 1 at this position is reduced. The positioning ring 3 can make up for the reduced thickness at this position, so that the mounting hole 2 has a large enough area to contact the wheel axle, ensuring the stability of the structure after welding.

[0038] A plurality of bolt grooves 4 for bolt installation are provided on the fixing plate body 1 along the circumferential direction. There are specifically three bolt grooves 4 in the present embodiment, and they are evenly distributed around the circumference. It should be noted that the bolt groove 4 in the present embodiment is a semi-finished product, and the bolt groove 4 does not penetrate the fixing plate body 1. A drilling positioning hole 41 is provided at the center of the inner bottom wall of the bolt groove 4, and the drilling positioning hole 41 is a tapered hole. Before the bolt groove 4 is actually used, a hole matching the bolt needs to be drilled at the bottom of the hole of the bolt groove 4. The tapered drilling positioning hole 41 is convenient for corresponding to the shape of the drill tip, which achieves a better positioning effect and avoids the drill bit from drilling off.

[0039] The reason why the bolt slot 4 is a semi-finished product is that a hole of a required size can be drilled later according to the requirements of product specifications for the bolt to pass through, or a threaded hole of a required size can be drilled for the bolt to be threadedly connected, so as to improve the adaptability of the product. Depending on the size of the drilled hole, the bolt slot 4 can also be used as a countersunk slot for the bolt, and the bolt slot 4 cooperates with the screw head of the bolt, thereby reducing the height of the screw head of the bolt protruding from the fixing plate body 1.

[0040] Reference Figure 2 and Figure 3 The fixing plate body 1 is fixed with a raised portion 5 on the back of the bolt groove 4, and the position of the raised portion 5 corresponds to the bolt groove 4. The raised portion 5 is used to specifically increase the thickness of the bolt penetration position, thereby improving the installation and fixing effect between the bolts, without increasing the overall thickness of the fixing plate body 1, saving materials.

[0041] The outer notch of the positioning groove 21 is provided with a chamfer or fillet 6. The chamfer or fillet 6 forms a regular weld between the axle and the fixing plate body 1, and the metal produced by welding is filled into the weld at the chamfer or fillet 6, making the welding of the axle and the fixing plate body 1 more stable.

[0042] The implementation principle of the disc brake fixing plate of the embodiment of the present application is as follows: the fixing plate body 1 contacts the wheel axle through the mounting hole 2, and abuts against the corresponding boss on the wheel axle through the positioning groove 21, thereby achieving accurate positioning effect in the axial direction of the wheel axle, avoiding position deviation after welding, and then the contact position between the fixing plate body 1 and the wheel axle can be welded.

[0043] It should be noted that the disc brake fixing plate of the present embodiment is a semi-finished product and needs to be fixed to the disc brake disc after holes for the insertion of bolts or holes for the threaded connection of bolts are drilled in the bolt groove 4 .

[0044] Embodiment 2:

[0045] Reference Figure 4 A disc brake fixing plate, the difference between the second embodiment and the first embodiment is that: a hole for the bolt to penetrate is provided in the bolt groove 4, and the hole can be a through hole or a threaded hole. When the hole is a through hole, the brake disc is fixed by a bolt and a nut; when the hole is a threaded hole, the brake disc is fixed by a bolt threadedly connected to the hole, and the threaded hole can penetrate the fixing plate body 1 or not.

[0046] The disc brake fixing plate of this embodiment is a finished product and can be directly installed and used.

[0047] Reference Figure 5 , is an exploded view of the assembly of the disc brake fixing plate, the wheel axle, the wheel hub, and the brake disc of this embodiment.

[0048] 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 disc brake fixing plate, comprising a fixing plate body (1), wherein a mounting hole (2) for a wheel axle to pass through is provided at the center of the fixing plate body (1), wherein: The fixing plate body (1) is provided with a positioning groove (21) on one side facing the wheel hub, the size of the positioning groove (21) is larger than the mounting hole (2), and the mounting hole (2) is connected to the inner bottom wall of the positioning groove (21).

2. The disc brake fixing plate according to claim 1, characterized in that: A positioning ring (3) is fixed on the back side of the fixing plate body (1) located at the positioning groove (21).

3. The disc brake fixing plate according to claim 2, characterized in that: The position of the positioning ring (3) corresponds to the positioning groove (21), and the inner ring wall of the positioning ring (3) is the hole wall of the mounting hole (2).

4. The disc brake fixing plate according to claim 1, characterized in that: The fixing plate body (1) is provided with a plurality of bolt grooves (4) along the circumferential direction for installing bolts.

5. The disc brake fixing plate according to claim 4, characterized in that: The fixing plate body (1) is fixed with a protrusion (5) on the back side of the bolt slot (4), and the position of the protrusion (5) corresponds to the bolt slot (4).

6. The disc brake fixing plate according to claim 4, characterized in that: The bolt groove (4) does not penetrate the fixing plate body (1), and a drilling positioning hole (41) is provided at the center of the inner bottom wall of the bolt groove (4).

7. The disc brake fixing plate according to claim 6, characterized in that: The drilling positioning hole (41) is a tapered hole.

8. The disc brake fixing plate according to claim 1, characterized in that: The outer notch of the positioning groove (21) is provided with a chamfer or a rounded corner (6).

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