Bolt fastening type brake disc

Abstract

The utility model discloses a bolt fastening type brake disc which comprises a disc body and a disc hub, and the disc hub is fixedly connected to the front wall of the disc body through a plurality of sets of fixing bolts. According to the utility model, the fixing groove is arranged on the disc hub, after the bracket is clamped in the fixing groove, the bracket is butted with the mounting hole through the connector, so that the disc hub is connected with the disc body, the gasket is inserted between the fixing groove and the bracket for accurate positioning, and finally the fixing bolt is matched with the gland and the nut to lock and fix the disc hub and the disc body. By means of the structure, split type connection installation is achieved, a gap is formed between the disc hub and the disc body through supporting of the support, air can enter the disc body rapidly through the gap in the vehicle running process so as to conduct heat dissipation on the range of the disc body, the heat dissipation effect is effectively improved, the support is made of silicon nitride ceramics, the gasket is made of aluminum alloy, and both the support and the gasket have good heat conductivity and mechanical strength. The heat on the disc body within the contact range can be transferred to the disc hub while the disc hub is fixedly installed, and the heat dissipation effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, especially to bolt fastening type brake disc. BACKGROUND

[0002] The traditional brake disc is an integrated cast iron piece of the disc hub and the disc body, which has slow heat dissipation and short service life. At present, the disc hub and the disc body are separated, the disc hub is generally made of aluminum alloy, and the disc body is still formed by casting due to process constraints. However, the disc hub is still in close contact with the disc body in the prior art, so that the part in contact with the disc body must rely on heat conduction to the disc hub to achieve heat dissipation, and the heat dissipation effect needs to be improved. Therefore, it is necessary to develop a bolt fastening type brake disc to improve the heat dissipation effect. SUMMARY

[0003] The utility model discloses a bolt fastening type brake disc which is proposed to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a disc body and a disc hub are provided, the disc hub is fixedly connected to the front wall of the disc body by a plurality of fixing bolts, a plurality of installation holes are arranged on the inner wall of the disc body, the plurality of installation holes are circumferentially and equally distributed with the disc body axis as the center, a connecting head is arranged on the inner wall of each installation hole, a support is arranged on the front wall of the connecting head, the support and the connecting head are provided with a through hole which penetrates front and back, a plurality of fixing grooves are arranged on the circumferential outer wall of the disc hub, and each fixing groove is in one-to-one correspondence with the front and back of one support, the fixing groove is in U shape, and the bottom surface of the U shape faces the disc hub axis, the support is clamped on the inner side wall of the fixing groove, a gap is formed between the disc hub and the front wall of the disc body by the support, two spacers are arranged between the inner side wall of the fixing groove and the support, a gland is arranged on the side of the support away from the disc body, the fixing bolt is arranged on the inner side wall of the through hole, the front end of the fixing bolt penetrates the gland and extends to the front side of the gland, a nut is threadedly connected to the end of the fixing bolt extending to the front side of the gland, and the disc body and the disc hub are locked and fixed by the fixing bolt and the nut.

[0005] Further description of the above technical scheme is as follows:

[0006] The two spacers are in two U shapes with their mouths opposite to each other in plan view, and the U-shaped inner cavities of the two spacers are clamped on the two side walls adjacent to the circumferential outer wall of the disc hub in the fixing grooves.

[0007] Further description of the above technical scheme is as follows:

[0008] The two side walls of the support facing the two spacers are provided with clamping grooves, and the opposite sides of the two spacers are clamped in the inner side walls of the clamping grooves.

[0009] As a further description of the above technical solutions:

[0010] The grommet is composed of a strip and two groups of pressing feet arranged at both ends of the length direction of the strip, the front wall of each group of the grommet is provided with a anti-off groove, and the pressing feet of the two groups respectively abut against the rear wall inside the anti-off groove.

[0011] As a further description of the above technical solutions:

[0012] The oblique grooves for increasing friction are arranged on the front and rear sidewalls of the disc body and at the peripheral position of the disc hub.

[0013] As a further description of the above technical solutions:

[0014] The disc body is cast iron, the disc hub is aluminum alloy, and the two groups of grommets are aluminum alloy.

[0015] As a further description of the above technical solutions:

[0016] The support and the connecting head are integrally formed and are both silicon nitride ceramic.

[0017] The utility model has the advantages of the following beneficial effects:

[0018] 1. Compared with the prior art, the bolt fastening type brake disc is provided with a fixed groove on the disc hub, the support is clamped into the fixed groove, the support is then connected to the mounting hole through the connecting head, the disc hub and the disc body are connected, the grommet is inserted between the fixed groove and the connecting head for accurate positioning, and finally the disc hub and the disc body are locked and fixed through the fixed bolt, the compression grommet and the nut, so that the split type connection and installation are realized, the disc hub and the disc body form a gap through the support, air can be quickly introduced into the gap during the driving of the vehicle to cool the disc body in the range, and the cooling effect is effectively improved.

[0019] 2. Compared with the prior art, the bolt fastening type brake disc is provided with a support made of silicon nitride ceramic and a grommet made of aluminum alloy, both of which have good thermal conductivity and mechanical strength, so that the disc hub can be installed and fixed while the heat on the disc body in the contact range is transmitted to the disc hub, and the cooling effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an overall structure schematic view of the bolt fastening type brake disc provided by the utility model;

[0021] Figure 2 It is a right rear perspective structure schematic view of the bolt fastening type brake disc provided by the utility model; Figure 1 It is a local enlarged view of A in the above figure;

[0022] Figure 3 It is a right rear perspective structure schematic view of the bolt fastening type brake disc provided by the utility model;

[0023] Figure 4 A disc hub structure schematic view of the bolt fastening type brake disc is provided in the utility model;

[0024] Figure 5 A disc body, a disc hub, a fixing bolt, a support, a gasket and a gland connecting structure partial section view of the bolt fastening type brake disc are provided in the utility model;

[0025] Figure 6 A gasket structure schematic view of the bolt fastening type brake disc is provided in the utility model;

[0026] Figure 7 A support structure schematic view of the bolt fastening type brake disc is provided in the utility model.

[0027] Legend:

[0028] 1, disc body; 101, mounting hole; 2, disc hub; 201, fixing groove; 3, inclined groove; 4, fixing bolt; 5, support; 501, clamping groove; 502, via hole; 6, gasket; 601, anti-off groove; 7, gland; 701, batten; 702, pressing foot; 8, nut; 9, connecting head. Specific implementation

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Reference Figures 1 to 7The utility model provides a bolt fastening type brake disc: including disc body 1 and hub 2, hub 2 is fixedly connected in disc body 1 front wall through a plurality of fixed bolts 4, and the both sides wall of disc body 1 and located hub 2 peripheral position are all provided with a plurality of inclined slot 3 for increasing friction, and the inclined slot 3 can increase the friction of braking, and disc body 1 inner wall is provided with a plurality of mounting hole 101, and a plurality of mounting hole 101 all are with disc body 1 axle center as center and are distributed in circle equal division, and the inner wall of a plurality of mounting hole 101 all is provided with connector 9, and the front wall of connector 9 is provided with support 5, and the inner wall of support 5, connector 9 is provided with the through hole 502 that is front and rear through together, and the circumferential outer wall of hub 2 is provided with a plurality of fixed grooves 201 and a plurality of fixed grooves 201 correspond with a group of support 5 front and rear respectively, and fixed groove 201 is U type and U type bottom surface is towards hub 2 axle center, and the outer wall of support 5 is clamped in the inner side wall of fixed groove 201, when assembling, first support 5 is clamped in the fixed groove 201 of hub 2, then connector 9 is inserted into mounting hole 101, and the connection of hub 2 and disc body 1 is formed;

[0031] In order to improve the heat dissipation effect, the two side walls of the two groups of gaskets 6 are provided with clamping grooves 501, and the opposite sides of the two groups of gaskets 6 are clamped in the inner side walls of the clamping grooves 501, and the gap is formed between the hub 2 and the front wall of the disc body 1 through the support 5, and the distance from the clamping groove 501 to the disc body 1 controls the distance between the rear wall of the hub 2 and the front wall of the disc body 1, and different installation distances can be obtained through the clamping grooves 501 at different positions, and through the gap formed between the rear wall of the hub 2 and the front wall of the disc body 1, air can flow into the gap quickly during driving, so that the relative position of the disc body 1 and the hub 2 can be quickly cooled, and the heat dissipation efficiency is much higher than that of the past through the hub 2 directly;

[0032] In order to ensure the accurate connection position between the support 5 and the fixed groove 201, the two groups of gaskets 6 are arranged between the inner side walls of the fixed groove 201 and the support 5, the two groups of gaskets 6 are projected as two groups of U-shaped openings facing away from each other, and the U-shaped cavities of the two groups of gaskets 6 are clamped in the two side walls adjacent to the circumferential outer wall of the hub 2 in the fixed groove 201, and when the support 5 is inserted into the fixed groove 201, the two groups of gaskets 6 are inserted between the support 5 and the fixed groove 201 for positioning, so that the position between the support 5 and the fixed groove 201 is accurate;

[0033] In order to avoid the displacement of the gasket 6 during driving, the support 5 is provided with a gland 7 away from the disc body 1, the fixing bolt 4 is arranged in the inner wall of the through hole 502, the front end of the fixing bolt 4 penetrates the gland 7 and extends to the front side of the gland 7, the end of the fixing bolt 4 extending to the front side of the gland 7 is threadedly connected with the nut 8, the disc body 1 and the disc hub 2 are locked and fixed by the fixing bolt 4 and the nut 8, the gland 7 is composed of a strip 701 and two groups of pressing feet 702 arranged at the length direction of the strip 701, the front wall of each group of gaskets 6 is provided with an anti-disengagement groove 601, the two groups of pressing feet 702 respectively abut against the inner side rear wall of one group of anti-disengagement grooves 601, after the gland 7 is pressed by the nut 8, the two groups of pressing feet 702 are respectively inserted into one group of anti-disengagement grooves 601, so that the gasket 6 cannot move towards the side away from the axis of the disc hub 2, thereby avoiding disengagement with the disc hub 2, and achieving the effect of anti-disengagement.

[0034] In order to further improve the heat dissipation effect, the disc body 1 is cast iron, the disc hub 2 is aluminum alloy, and the two groups of gaskets 6 are aluminum alloy, the support 5 and the connecting head 9 are integrally formed and are both silicon nitride ceramics, the silicon nitride ceramic has high thermal conductivity and high mechanical strength, when the connecting head 9 is connected with the disc body 1, the heat received by the disc body 1 is transmitted to the disc hub 2 through the support 5 and the gasket 6, and heat dissipation is achieved.

[0035] Working principle: during assembly, the support 5 is first clamped in the fixing groove 201 of the disc hub 2, then the connecting head 9 is inserted into the mounting hole 101, and the connection of the disc hub 2 and the disc body 1 is formed; the distance from the clamping groove 501 to the disc body 1 controls the distance between the rear wall of the disc hub 2 and the front wall of the disc body 1, different installation distances can be obtained by different positions of the clamping groove 501, through the gap formed between the rear wall of the disc hub 2 and the front wall of the disc body 1, air can flow into the gap quickly during driving, so as to quickly dissipate heat to the relative position of the disc body 1 and the disc hub 2; after the support 5 is inserted into the fixing groove 201, the two groups of gaskets 6 are inserted between the support 5 and the fixing groove 201 for positioning, so as to ensure the accurate position between the support 5 and the fixing groove 201; after the gland 7 is pressed by the nut 8, the two groups of pressing feet 702 are respectively inserted into one group of anti-disengagement grooves 601, so that the gasket 6 cannot move towards the side away from the axis of the disc hub 2, thereby avoiding disengagement with the disc hub 2, and achieving the effect of anti-disengagement; when the connecting head 9 is connected with the disc body 1, the heat received by the disc body 1 is transmitted to the disc hub 2 through the support 5 and the gasket 6, and heat dissipation is achieved.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A bolt-fastened brake disc, characterized in that: The device includes a disc body (1) and a disc hub (2). The disc hub (2) is fixedly connected to the front wall of the disc body (1) by multiple sets of fixing bolts (4). The inner wall of the disc body (1) is provided with multiple sets of mounting holes (101). The multiple sets of mounting holes (101) are evenly distributed in a circle with the axis of the disc body (1) as the center. The inner side wall of the multiple sets of mounting holes (101) is provided with a connector (9). The front wall of the connector (9) is provided with a bracket (5). The inner wall of the bracket (5) and the connector (9) are provided with a through hole (502) that runs through the front and back. The outer circumference of the disc hub (2) is provided with multiple sets of fixing grooves (201), and the multiple sets of fixing grooves (201) are respectively corresponding to a set of brackets (5) in the front and back. The fixing grooves (201) are U-shaped and U-shaped. The bottom surface of the plate faces the axis of the hub (2). The outer wall of the bracket (5) is snapped into the inner wall of the fixing groove (201). The hub (2) is supported by the bracket (5) and forms a gap with the front wall of the plate body (1). Two sets of gaskets (6) are provided between the inner wall of the fixing groove (201) and the bracket (5). A pressure cap (7) is provided on the side of the bracket (5) away from the plate body (1). The fixing bolt (4) is provided on the inner wall of the through hole (502) and the front end of the fixing bolt (4) passes through the pressure cap (7) and extends to the front side of the pressure cap (7). A nut (8) is threaded to the end of the fixing bolt (4) that extends to the front side of the pressure cap (7). The plate body (1) and the hub (2) are locked and fixed by the fixing bolt (4) and the nut (8).

2. The bolt-fastened brake disc according to claim 1, characterized in that: The two sets of gaskets (6) are projected from above as two U-shaped shapes with their openings facing away from each other. The inner cavities of the two sets of gaskets (6) are respectively engaged in the two side walls adjacent to the outer circumference of the hub (2) in the fixing groove (201).

3. The bolt-fastened brake disc according to claim 1, characterized in that: The bracket (5) has slots (501) on both sides of the two sets of pads (6), and the opposite sides of the two sets of pads (6) are respectively engaged in the inner side wall of a slot (501).

4. The bolt-fastened brake disc according to claim 1, characterized in that: The pressure cap (7) consists of a strip (701) and two sets of pressure feet (702) located at both ends of the strip (701) along its length. The front walls of the two sets of gaskets (6) are provided with anti-detachment grooves (601), and the two sets of pressure feet (702) respectively abut against the inner rear wall of one set of anti-detachment grooves (601).

5. The bolt-fastened brake disc according to claim 1, characterized in that: The front and rear side walls of the disc body (1) and the outer periphery of the disc hub (2) are provided with multiple sets of inclined grooves (3) to increase friction.

6. The bolt-fastened brake disc according to claim 1, characterized in that: The disc body (1) is made of cast iron, the disc hub (2) is made of aluminum alloy, and both sets of gaskets (6) are made of aluminum alloy.

7. The bolt-fastened brake disc according to claim 1, characterized in that: The bracket (5) and connector (9) are integrally formed and are both silicon nitride ceramics.

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