Rear wheel central braking device for formula car

Abstract

The utility model discloses a rear wheel central braking device for a formula car. The rear wheel central braking device comprises an auxiliary frame, the limited slip differential is fixedly connected to one side of the auxiliary frame; the two ends of the limited slip differential are each connected with a wheel through a half shaft. The brake disc is coaxially arranged on the outer wall of the middle part of the limited slip differential and is connected with the limited slip differential; the brake is fixedly connected to the other side of the auxiliary frame; a U-shaped groove is formed in the middle of the brake; a clamping gasket is arranged in the U-shaped groove; wherein the outer ring of the brake disc is arranged in a U-shaped groove of the brake. According to the rear wheel central braking device for the formula car, a braking pipeline can be simplified, the stress of the rear stand column is reduced, and the unsprung mass is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of formula racing cars, and particularly to a rear-wheel central braking device for formula racing cars. Background Technique

[0002] A complete formula racing car should be equipped with a braking system to achieve the deceleration function of the racing car. Currently, most formula racing cars adopt the form of arranging the brake on the wheel side, that is, fixing the brake on the wheel side column. This form not only increases the force on the column but also increases the unsprung mass of the racing car, affecting the acceleration and handling performance of the racing car and being not conducive to the lightweight of the racing car. In addition, the layout of the brake pipeline in this form is relatively complex, increasing the number of joints, and too many joints will increase the probability of oil leakage. Content of the Utility Model

[0003] The purpose of this utility model is to provide a rear-wheel central braking device for formula racing cars, which can simplify the brake pipeline, reduce the force on the rear column, and reduce the unsprung mass.

[0004] The technical solution provided by this utility model is as follows:

[0005] A rear-wheel central braking device for formula racing cars, comprising:

[0006] Subframe;

[0007] Limited-slip differential, which is fixedly connected to one side of the subframe; both ends of the limited-slip differential are respectively connected to a wheel through a half shaft;

[0008] Brake disc, which is coaxially arranged on the outer wall of the middle part of the limited-slip differential and is connected to the limited-slip differential;

[0009] Brake, which is fixedly connected to the other side of the subframe; a U-shaped groove is provided in the middle of the brake; a clamping lining is provided in the U-shaped groove;

[0010] Wherein, the outer ring of the brake disc is arranged in the U-shaped groove of the brake.

[0011] Preferably, it further comprises: a first connection lug and a second connection lug, which are coaxially arranged on the outer walls of both ends of the limited-slip differential; the limited-slip differential is connected to the subframe through the first connection lug and the second connection lug.

[0012] Preferably, it further comprises: a brake disc fixing device, which is a disc with a smooth inner circle and a toothed outer circle; the brake disc fixing device is coaxially arranged on the outer wall of the middle part of the limited-slip differential; the brake disc is fixedly connected to the limited-slip differential through the brake disc fixing device.

[0013] Preferably, the inner ring of the brake disc is connected to the outer ring of the brake disc fixing device by brake disc pins.

[0014] Preferably, the limited slip differential is fixedly connected to the inner ring of the brake disc fixing device by bolts.

[0015] Preferably, it further includes: a brake adjusting shim, which is arranged on the same side as the brake; the brake is connected to the subframe through the brake adjusting shim.

[0016] The beneficial effects of the present utility model are: The rear-wheel central braking device for a formula racing car provided by the present utility model can simplify the braking pipeline, reduce the stress on the rear upright, and reduce the unsprung mass. Description of the Drawings

[0017] Figure 1 It is a front view of the rear-wheel central braking device for a formula racing car according to the present utility model.

[0018] Figure 2 It is a rear view of the rear-wheel central braking device for a formula racing car according to the present utility model.

[0019] Figure 3 It is a schematic diagram of the overall structure of the rear-wheel central braking device for a formula racing car according to the present utility model.

[0020] Figure 4 It is a schematic diagram of the partial structure of the rear-wheel central braking device for a formula racing car according to the present utility model.

[0021] Figure 5 It is an assembly drawing of the brake disc and the brake disc fixing device according to the present utility model.

[0022] Figure 6 It is a schematic diagram of the structure of the brake disc fixing device according to the present utility model.

[0023] Figure 7 It is a schematic diagram of the structure of the brake adjusting shim according to the present utility model.

[0024] Figure 8 It is a schematic diagram of the structure of the subframe according to the present utility model. Detailed Description of the Preferred Embodiments

[0025] The following further describes the present utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0026] As Figure 1-3As shown in the figure, the utility model provides a rear-wheel central braking device for a formula racing car, which includes: a subframe 110 for installing a limited-slip differential 120 and a brake 140; the limited-slip differential 120 is fixedly connected to one side of the subframe 110; both ends of the limited-slip differential 120 are respectively connected to a wheel 210 through a half shaft 211; the limited-slip differential 120 transmits the rotation from the engine to the half shafts 211 at both ends of the limited-slip differential 120 through differential action, thereby controlling the rotation of the wheels 210; a brake disc 130 coaxially arranged on the outer wall of the middle part of the limited-slip differential 120 and fixedly connected to the limited-slip differential 120; the brake 140 is fixedly connected to the other side of the subframe 110; a U-shaped groove is provided in the middle of the brake 140; a clamping lining is provided in the U-shaped groove; wherein, the outer ring of the brake disc 130 is arranged in the U-shaped groove of the brake 140; when the driver uses the brake, the clamping lining in the brake 140 contacts the brake disc 130, and a frictional force is applied to the surface of the brake disc 130 through the clamping lining, so that the rotation of the wheels 210 is slowed down or stopped, thereby reducing the speed or stopping the vehicle; a first connecting lug 121 and a second connecting lug 122 coaxially arranged on the outer walls at both ends of the limited-slip differential 120; the limited-slip differential 120 is fixedly connected to the subframe 110 through the first connecting lug 121 and the second connecting lug 122; bearings are provided in both the first connecting lug 121 and the second connecting lug 122, and the limited-slip differential 120 and the first connecting lug 121 and the second connecting lug 122 adopt interference fit, and the limited-slip differential 120 can rotate relative to the subframe 110; a brake disc fixing device 160, which is a disc with a smooth inner circle and a toothed outer circle; the brake disc fixing device 160 is coaxially arranged on the outer wall of the middle part of the limited-slip differential 120 and fixedly connected to the limited-slip differential 120; the brake disc 130 is fixedly connected to the limited-slip differential 120 through the brake disc fixing device 160; the inner circle of the brake disc 130 and the outer circle of the brake disc fixing device 160 are connected by a brake disc pin 161; the limited-slip differential 120 and the inner circle of the brake disc fixing device 160 are fixedly connected by bolts 162; a brake adjuster shim 150, which is arranged on the same side as the brake 140; the brake 140 is connected to the subframe 110 through the brake adjuster shim 150; the distance between the brake 140 and the subframe 110 is adjusted through the brake adjuster shim 150 so that the contact area between the brake disc 130 and the clamping lining remains unchanged.

[0027] When the formula racing car is running normally, the engine drives the limited-slip differential 120 to rotate through the chain 220. After the differential action of the limited-slip differential 120, the rotation is transmitted to the half shaft 211, thereby driving the rotation of the wheel 210; when the formula racing car brakes, the clamping lining in the brake 140 pops out and contacts the surface of the brake disc 130. Using the frictional force generated by the contact between the clamping lining and the brake disc 130, the rotation of the brake disc 130 is slowed down or stopped, and then the rotation of the limited-slip differential 120 is slowed down or stopped, so that the rotation amount or stop amount is transmitted to the half shaft 211, controlling the wheel 210 to slow down or stop rotating, so that the vehicle decelerates or stops, achieving the purpose of completing the braking function of the rear wheels by a single brake disc and a single brake.

[0028] As Figure 4-6 shown, the shape of the brake disc 130 is a disc with teeth on both the inner and outer circles; the inner circle of the brake disc 130 is fixedly connected to the outer circle of the brake disc fixing device 160 through the brake disc pin 161, and the brake disc fixing device 160 is fixedly connected to the limited-slip differential 120 through the bolt 162. The brake 140 and the brake adjusting gasket 150 are fixedly connected to the subframe 110 through long bolts.

[0029] As Figure 7 shown, the brake adjusting gasket 150 is arranged between the subframe 110 and the brake 140. When the relative distance between the limited-slip differential 120 and the subframe 110 changes slightly, the distance between the brake 140 and the subframe 110 can be changed by adding or reducing circular gaskets between the subframe 110 and the brake adjusting gasket 150, so as to ensure that the contact area between the clamping lining and the brake disc 130 remains unchanged.

[0030] As Figure 8 shown, the subframe 110 is provided with a plurality of mounting holes for supporting and mounting the limited-slip differential 120 and the brake 140 through bolts.

[0031] The rear-wheel central braking device for a formula racing car provided by the present invention has a simple structure. The single brake disc is integrated on the limited-slip differential, reducing the force on the rear pillar; the brake is fixed to the subframe and acts on the limited-slip differential at the same time. The braking function of the rear wheels can be realized by a single brake disc and a single brake, simplifying the brake pipeline, reducing the unsprung mass of the formula racing car and lowering the overall vehicle manufacturing cost.

[0032] Although the embodiments of the present utility model have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details and the examples shown and described herein.

Claims

1. A rear-wheel central braking device for a formula racing car, characterized in that, Comprising: Subframe; Limited slip differential, fixedly connected to one side of the subframe; both ends of the limited slip differential are respectively connected to a wheel through a half shaft; Brake disc, coaxially arranged on the outer wall of the middle part of the limited slip differential and connected to the limited slip differential; Brake, fixedly connected to the other side of the subframe; a U-shaped groove is provided in the middle of the brake; a clamping lining is provided in the U-shaped groove; Wherein, the outer ring of the brake disc is arranged in the U-shaped groove of the brake.

2. The rear-wheel central braking device for a formula racing car according to claim 1, characterized in that, Further comprising: First connecting lug and second connecting lug, coaxially arranged on the outer walls of both ends of the limited slip differential; The limited slip differential is connected to the subframe through the first connecting lug and the second connecting lug.

3. The rear-wheel central braking device for a formula racing car according to claim 1, characterized in that, Further comprising: Brake disc fixing device, which is a disc with a smooth inner circle and a toothed outer circle; the brake disc fixing device is coaxially arranged on the outer wall of the middle part of the limited slip differential; the brake disc is fixedly connected to the limited slip differential through the brake disc fixing device.

4. The rear-wheel central braking device for a formula racing car according to claim 3, characterized in that, The inner circle of the brake disc is connected to the outer circle of the brake disc fixing device by a brake disc pin.

5. The rear-wheel central braking device for a formula racing car according to claim 3, characterized in that, The inner circle of the limited slip differential is fixedly connected to the brake disc fixing device by bolts.

6. The rear-wheel central braking device for a formula racing car according to claim 1, characterized in that, Further comprising: Brake adjusting gasket, arranged on the same side as the brake; the brake is connected to the subframe through the brake adjusting gasket.

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