CN218966893U

CN218966893U - Quick combination device

Info

Publication number: CN218966893U
Application number: CN202222809387.8U
Authority: CN
Inventors: 洪建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-28
Filing date: 2022-10-24
Publication date: 2023-05-05
Anticipated expiration: 2032-10-24

Abstract

The utility model relates to the technical field of braking and discloses a quick-coupling device which comprises a driven shaft and a braking shaft, wherein the driven shaft is fixedly provided with a brake disc, the braking shaft is provided with a sleeve shell sleeved on the brake disc, the sleeve shell is provided with a notch, the notch is provided with a brake block, the quick-coupling device also comprises a shifting fork and a bearing, and the inner ring and the outer ring of the bearing are respectively used for contacting the shifting fork and the brake block. The utility model has the following advantages and effects: when the automobile normally runs, the driven shaft is separated from the brake shaft, and the driven shaft idles; when the automobile is braked, the driven shaft is combined with the brake shaft, a traction force source on the brake shaft provides traction force required by braking, the traction force source is transmitted to the driven shaft and the automobile differential mechanism, the automobile is effectively braked, the automobile can be effectively braked when the original brake of the electric automobile fails, and the design of a mechanical structural formula is safer and more reliable.

Description

Quick combination device

Technical Field

The utility model relates to the technical field of vehicle braking, in particular to a quick combination device.

Background

The electric automobile is a vehicle which uses a vehicle-mounted power supply as power and uses a motor to drive wheels to run and meets various requirements of road traffic and safety regulations. The environmental impact is smaller than that of the traditional automobile, and the prospect is widely seen. The brake failure reasons of the electric automobile may be damage to a brake power-off switch, problems in the controller and line faults. When the electric control brake fails, traffic safety accidents are extremely easy to occur, and life and property of drivers and passengers are greatly lost. In the research process, the applicant originally provides a mechanical brake device which can be applied to the brake of an electric automobile, and the mechanical brake device is additionally arranged on the electric automobile, so that a safety measure can be additionally provided when the electric automobile fails in case of brake failure. The brake device transmits the motion of the automobile differential through the driven shaft, but how to combine the driven shaft with a traction force source for providing braking resistance is not referred to in the prior art, so the scheme of the utility model is provided.

Disclosure of Invention

The utility model aims to provide a quick combination device which has the effects of separating a driven shaft from a brake shaft during normal running of an automobile and combining the driven shaft with the brake shaft during braking of the automobile.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a quick combination device, includes driven shaft, brake axle, the driven shaft is fixed with the brake disc, the brake axle is equipped with the cover shell of cover brake disc, the notch has been seted up to the cover shell, the notch is equipped with the brake block, quick combination device still includes shift fork, bearing, the outer lane is used for contacting respectively the shift fork with the brake block.

By adopting the technical scheme, the quick-coupling device is used for a brake system of an automobile, a driven shaft can be connected with a differential mechanism of the automobile, and a traction force source for providing braking resistance, such as a motor, is arranged on the brake shaft. When the automobile normally runs, the driven shaft is not combined with the brake shaft, the driven shaft idles, and the brake shaft does not rotate. When the automobile needs to be braked, a driver drives the shifting fork to move, the shifting fork pushes the bearing to move towards the brake pad, the brake pad is tightly attached to the brake disc, friction force is generated between the brake disc and the brake pad, the brake pad acts on the side wall of the notch to drive the sleeve shell to rotate, and then the brake shaft is driven to rotate, so that the combination of the brake shaft and the driven shaft is realized, braking resistance is applied to the brake shaft by the traction force source, and the traction force source is transmitted to the driven shaft and then transmitted to the differential mechanism, and braking is realized.

The driver operates and drives the shifting fork to be far away from the brake pad, after the acting force of the bearing on the brake pad disappears, the friction force between the brake pad and the brake disc is reduced or even disappears, and the combination of the driven shaft and the brake shaft is released.

The utility model is further provided with: the first guiding inclined plane is formed in the inner wall of the notch, and the first guiding inclined plane guides the brake pad to lean against the brake disc after the brake pad receives friction force of the brake disc.

By adopting the technical scheme, the brake pad is driven to move when the brake disc rotates, the first guide inclined plane is consistent with the movement trend of the brake disc, and the guide brake pad is abutted against the brake disc. The driver only needs to use certain force to increase the binding force, which is equivalent to assisting force, after the shifting fork keeps applying acting force to the brake pad through the bearing, the brake pad only can be more and more close to the brake disc under the action of the first guiding inclined plane, and the brake pad is difficult to separate from the brake disc, so that the binding effect of the driven shaft and the brake shaft is ensured.

The utility model is further provided with: the brake pad is provided with a second guide inclined plane, and the second guide inclined plane contacts the first guide inclined plane.

Through adopting above-mentioned technical scheme, the second direction inclined plane on the brake block can laminate with first direction inclined plane better.

The utility model is further provided with: the first guide inclined plane and/or the second guide inclined plane are/is a steel sheet.

By adopting the technical scheme, the surface of the steel sheet is smoother, so that the brake pad can move in the notch well.

The utility model is further provided with: the notch inner wall is provided with a first matching inclined plane, the brake pad is provided with a second matching inclined plane, the second matching inclined plane contacts the first matching inclined plane, and the first matching inclined plane and the first guiding inclined plane are distributed on two sides of the brake pad.

Through adopting above-mentioned technical scheme, the brake block is being close to, keep away from the brake disc in-process, and second cooperation inclined plane, first cooperation inclined plane are laminated mutually, avoid producing clearance, rocking between brake block and the notch.

The utility model is further provided with: the quick combination device comprises a brake disc, a shifting fork, bearings, a quick combination device and a quick combination device, wherein the number of the notches is multiple and is distributed on two sides of the brake disc, the number of the shifting fork is two and is distributed on two sides of the sleeve, the quick combination device further comprises a fixing portion, the middle of the shifting fork is hinged to the fixing portion, the two shifting forks comprise fork portions and rod portions, a cam is arranged between the two rod portions, and the cam is rotationally connected to the fixing portion.

By adopting the technical scheme, the notch and the brake pads are distributed on two sides of the brake disc, and the brake pads can be better combined with the brake disc, so that the driven shaft and the brake shaft can be better combined.

The cam rotates to drive the two rod parts to be far away from each other, and then the two fork parts are close to each other, and the fork parts act on the bearing, so that acting force is applied to the brake pad to enable the brake pad to be tightly attached to the brake disc. The cams reversely rotate, the two rod parts are mutually close under the action of the elastic force of the return spring, the acting force applied to the brake pad is reduced after the fork parts are far away from the bearing, the friction force between the brake pad and the brake disc is reduced or even eliminated, and at the moment, the driven shaft and the brake shaft are released from combination.

The utility model is further provided with: the starting device comprises a starting end, a stay wire connected to the starting end and an elastic device, wherein the elastic device comprises a cylinder body, a piston arranged in the cylinder body, a spring arranged between the piston and the cylinder body, a connecting rope is arranged between the cylinder body and the cam, and the stay wire pulls the piston to drive the cylinder body to be far away from the cam, and elastic deformation occurs after the spring is stressed.

Through adopting above-mentioned technical scheme, if directly will act as go-between and connect on the cam, the driver can drive cam, shift fork motion through acting as go-between, but can have following problem: the driver can not continuously pull the pull wire all the time, the starting end can keep the pull wire after pulling, in the process, the brake pad can continuously approach the brake disc under the combined action of friction force and the first guiding inclined plane, so that gaps are formed among the shifting fork, the bearing and the brake pad, and the bearing can shake and collide. According to the utility model, the pull wire is designed to pull the piston to move, the piston drives the cylinder body and the connecting rope to move through the spring, and then the cam is pulled to rotate, so that even if the pull wire is in a position maintaining state, the brake pad is close to the brake disc under the combined action of friction force and the first guide inclined plane, a gap is formed among the shifting fork, the bearing and the brake disc, the spring which is elastically deformed can release elasticity, and the cam and the shifting fork are driven to move, so that the formed gap is eliminated.

The utility model is further provided with: the number of the notches is multiple, an elastic piece is arranged between the brake pad and the casing, and the elastic piece is used for enabling the brake pad to return.

Through adopting above-mentioned technical scheme, notch quantity is a plurality of, and the brake block quantity that corresponds is a plurality of, combines on the brake disc through the multi-disc brake block, effectively improves the bonding effect.

The utility model is further provided with: the brake shaft is arranged in a hollow mode, the driven shaft is inserted into the middle of the brake shaft, and the brake shaft penetrates through the release bearing to form a gap between the release bearing and the brake shaft.

The utility model is further provided with: the driven shaft is fixedly provided with a plurality of brake discs, the brake shaft is fixedly provided with a plurality of sleeves, the sleeves are respectively in one-to-one correspondence with the brake discs, and gears can be additionally arranged at the outer diameter of the sleeve center of the sleeves for phase change output or input, and the sleeves can also be directly output or input.

By adopting the technical scheme, the number of the brake discs and the number of the sleeves are multiple, so that the combination effect of the driven shaft and the brake shaft is better and faster.

The beneficial effects of the utility model are as follows:

1. the quick combination device is applied to the brake device of the automobile, the driven shaft is connected with the automobile differential mechanism, the driven shaft can be designed to be shorter, the volume and the idle resistance are reduced, and the installation space is reduced.

2. The brake pads on the shell are multiple, and can be respectively combined on two end faces of the brake disc, so that the combination effect of the brake pads and the brake disc is effectively improved.

3. The first guide inclined plane on the shell can guide the brake pad to be more easily close to the brake disc when the brake pad is subjected to friction force of the brake disc, and under the condition that the brake disc rotates, a certain acting force is applied to the brake pad through the bearing by the shifting fork, so that a good combination effect can be obtained. The first guide inclined plane and the second guide inclined plane can be made of smooth materials such as steel sheets and the like, so that the brake pad can conveniently move in the notch. The first guide inclined plane and the second guide inclined plane select reasonable inclination angles, so that the shifting fork is easy to return, and after the shifting fork is far away from the bearing, the friction force between the brake pad and the brake disc is reduced or even eliminated.

4. The starting end is a pedal, a hand brake structure and the like, and drives the stay wire, the elastic device, the cam and the shifting fork to move, so that the design of the mechanical structure is safer and more reliable.

5. The number of the brake discs and the sleeves is multiple, multiple insurance measures are designed and provided for redundancy, and the combination effect can be effectively guaranteed.

6. When the automobile normally runs, the driven shaft is separated from the brake shaft, and the driven shaft idles; when the automobile is braked, the driven shaft is quickly combined with the brake shaft, a traction force source on the brake shaft provides traction force required by braking, the traction force source is transmitted to the driven shaft and the automobile differential mechanism, the automobile is effectively braked, the automobile can be effectively braked when the original brake of the electric automobile fails, and the design of a mechanical structural formula is safer and more reliable.

7. The quick-coupling device can be applied to other fields and other devices according to actual requirements.

8. The device has the advantages of quick combination, labor saving combination, small rotation resistance of the driven shaft of the differential mechanism before combination, high strength after combination and stable performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of embodiment 1.

Fig. 2 is a schematic diagram of the positional relationship among the driven shaft, the brake shaft, and the jacket of embodiment 1.

Fig. 3 is a schematic diagram showing an explosion state between the bearing, the brake pad, and the jacket of embodiment 1.

Fig. 4 is a schematic structural view of an elastic device of embodiment 1.

In the figure, 1, a driven shaft; 11. a brake disc; 2. a brake shaft; 3. a casing; 31. a notch; 32. a first guiding inclined surface; 33. a first mating ramp; 4. a brake pad; 41. a second guiding inclined surface; 42. a second mating ramp; 43. a steel back; 44. a friction plate; 5. a shifting fork; 51. a fork portion; 52. a stem portion; 6. a cam; 61. a return spring; 7. a starting device; 72. a pull wire; 73. a cylinder; 74. a piston; 75. a spring; 76. connecting a stay wire; 8. a bearing; 9. a differential.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in connection with specific embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Example 1: the quick-coupling device comprises a driven shaft 1 and a brake shaft 2, wherein the driven shaft 1 is fixedly provided with two brake discs 11, the brake shaft 2 is arranged in a hollow mode and is fixedly provided with two sleeves 3, the two sleeves 3 are respectively sleeved on the two brake discs 11, and one end of the driven shaft 1 is inserted into the brake shaft 2. The gear can be additionally arranged on the casing 3, two end faces are arranged on the casing 3, four notches 31 are formed in each end face, a brake block 4 is arranged in each notch 31, each brake block 4 comprises a steel back 43 and a friction plate 44 fixed on the steel back 43, and the friction plates 44 are close to the brake disc 11. The inner wall of the notch 31 is formed with a first guiding inclined plane 32 and a first matching inclined plane 33, and the first guiding inclined plane 32 and the second guiding inclined plane 41 are positioned at two sides of the brake pad 4. The steel back 43 is formed with a second guiding inclined surface 41 and a second matching inclined surface 42, the first guiding inclined surface 32 is attached to the second guiding inclined surface 41, and the first matching inclined surface 33 is attached to the second matching inclined surface 42. The first guide inclined surface 32, the second guide inclined surface 41, the first matching inclined surface 33 and the second matching inclined surface 42 are all steel sheets.

The quick-coupling device comprises a fixing part and an actuating device 7. Each of the two sides of the casing 3 is provided with a shifting fork 5, each shifting fork 5 comprises a fork part 51 and a rod part 52, the fork parts 51 are inserted into the driven shaft 1, the middle of each rod part 52 is hinged to the fixing part, a bearing 8 is arranged between each fork part 51 and the brake pad 4, the bearing 8 is a separation bearing, the bearing 8 is sleeved on the brake shaft 2, and a gap is formed between the bearing 8 and the brake shaft 2. The outer race of the bearing 8 is used to contact the fork portion 51 of the fork 5 and the inner race is used to contact the steel backing 43 of the brake pad 4. A cam 6 is arranged between the two rod parts 52, the cam 6 is rotationally connected to the fixed part, the two rod parts 52 are contacted with the curved surface of the cam 6, and a return spring 61 is arranged between the two rod parts 52. The starting device 7 comprises a starting end, a stay wire 72 and an elastic device, wherein the starting end is of a pedal or hand brake structure and can be operated by a driver. The elastic device comprises a cylinder 73, a piston 74 positioned in the cylinder 73, and a spring 75 positioned between the piston 74 and the cylinder 73, wherein the cylinder 73 is connected with the cam 6 through a connecting rope 76, one stretching end is connected with the starting end, and the other stretching end is fixed on the piston 74.

Working principle: the driven shaft 1 is fixed with a bevel gear which is meshed with a ring gear of the differential gear 9 of the automobile, and the ring gear of the differential gear 9 is also called a driven gear, a driven ring gear, a driven bevel gear and the like which are meshed with gears on the power input shaft. The brake shaft 2 is connected to a motor to provide braking resistance as a traction source. When the automobile runs normally, the power input shaft drives the differential 9 to work, and the driven shaft 1 idles under the drive of the ring gear. When braking is needed, a driver operates the starting end, the starting end pulls the piston 74 through the stay wire 72, the piston 74 drives the cylinder 73 to move through the spring 75, elastic deformation occurs after the spring 75 is stressed, the cylinder 73 drives the cam 6 to rotate through the connecting rope 76, the cam 6 drives the rod parts 52 of the two shifting forks 5 to be far away from each other, and the fork parts 51 are close to each other. The fork 51 pushes the brake pad 4 to approach the brake disc 11 through the release bearing, friction force is generated between the brake pad 4 and the brake disc 11, and the brake pad 4 is guided to lean against the brake disc 11 under the mutual cooperation of the friction pad 44 and the first guiding inclined surface 32. The brake disc 11 drives the brake block 4 to move, the brake block 4 acts on the inner wall of the notch 31 to drive the sleeve shell 3 to rotate, the sleeve shell 3 drives the driven shaft 1 to rotate, the driven shaft 1 and the brake shaft 2 are combined, a motor on the brake shaft 2 provides resistance to form traction force, and the traction force is provided for braking and braking the driven shaft 1 and the differential mechanism 9.

Example 2: a quick-coupling device comprises an embodiment 1, wherein a gear phase-changing output or input can be additionally arranged at the outer diameter of a sleeve center of a sleeve, and the gear phase-changing output or input can also be directly output or input from the sleeve center of a brake shaft.

Claims

1. A quick connect device, characterized by: including driven shaft (1), brake shaft (2), driven shaft (1) is fixed with brake disc (11), brake shaft (2) are equipped with the cover shell (3) of cover brake disc (11), notch (31) have been seted up to shell (3), notch (31) are equipped with brake block (4), and quick coupling device still includes shift fork (5), bearing (8), the inner and outer circle of bearing (8) are used for contacting respectively shift fork (5) with brake block (4).

2. A quick connect device as defined in claim 1 wherein: the first guide inclined plane (32) is formed in the inner wall of the notch (31), and the first guide inclined plane (32) guides the brake pad (4) to lean against the brake disc (11) after the brake pad (4) receives the friction force of the brake disc (11).

3. A quick connect device as claimed in claim 2 wherein: the brake pad (4) is provided with a second guiding inclined plane (41), and the second guiding inclined plane (41) contacts the first guiding inclined plane (32).

4. A quick connect device as claimed in claim 3 wherein: the first guide inclined surface (32) and/or the second guide inclined surface (41) are/is a steel sheet.

5. A quick connect device as claimed in claim 2 wherein: the novel brake block is characterized in that a first matching inclined plane (33) is formed in the inner wall of the notch (31), a second matching inclined plane (42) is arranged on the brake block (4), the second matching inclined plane (42) contacts the first matching inclined plane (33), and the first matching inclined plane (33) and the first guiding inclined plane (32) are distributed on two sides of the brake block (4).

6. A quick connect device according to any one of claims 1-5, wherein: notch (31) quantity be a plurality of and distribute in brake disc (11) both sides, shift fork (5) bearing (8) quantity be two and distribute in cover shell (3) both sides, quick combination device still includes fixed part, shift fork (5) middle part articulate in fixed part, two shift fork (5) include fork portion (51) and pole portion (52), two be equipped with cam (6) between pole portion (52), cam (6) rotate connect in fixed part is connected with return spring (61) between two pole portions (52).

7. A quick connect device as defined in claim 6, wherein: still include starting drive (7), starting drive (7) including the start, connect in act as go-between (72) of start, resilient means includes barrel (73), be located piston (74) in barrel (73), be located piston (74) with spring (75) between barrel (73), barrel (73) with be equipped with between cam (6) and connect rope (76), act as go-between (72) pulling piston (74) drive when barrel (73) are kept away from cam (6), elastic deformation takes place after spring (75) atress.

8. A quick connect device according to any one of claims 1-5, wherein: the number of the notches (31) is multiple, and an elastic piece is arranged between the brake pad and the casing and used for enabling the brake pad to return.

9. A quick connect device according to any one of claims 1-5, wherein: the brake block (4) comprises a steel back (43) and a friction plate (44), the bearing (8) is a release bearing, the brake shaft (2) is arranged in a hollow mode, the driven shaft (1) is inserted into the middle of the brake shaft (2), and the brake shaft (2) penetrates through the release bearing and forms a gap between the release bearing and the release bearing.

10. A quick connect device according to any one of claims 1-5, wherein: a plurality of brake discs (11) are fixed on the driven shaft (1), a plurality of sleeves (3) are fixed on the brake shaft (2), the sleeves (3) are respectively in one-to-one correspondence with the brake discs (11), and gear phase-changing output or input can be additionally arranged at the outer diameter of a central sleeve of the sleeve (3), and also can be directly output or input through the central sleeve of the brake shaft (2).