Automatic parking device for electric tricycle

Abstract

The invention discloses an automatic parking device for an electric tricycle. The automatic parking device comprises an outer shell, a floating rack, a rack seat and an opening and closing mechanism. The floating rack and the rack seat are oppositely arranged in the height direction, the rack seat is slidably connected into the outer shell, one end of the rack seat is connected with the front brake pull rod, and the front brake pull rod is connected with the brake pedal. The floating rack can float up and down in the sliding direction perpendicular to the rack base, the opening and closing mechanism is arranged between the floating rack and the rack base, and tooth-shaped parts which can be meshed with each other are formed at the two ends of the outer side walls, close to each other, of the floating rack and the rack base. When the brake pedal is stepped down, the brake pedal can drive the rack seat to move forwards through the front brake pull rod, so that the tooth-shaped parts between the rack seat and the floating rack are meshed with each other. Parking operation is simplified, a sensor and a program do not need to be matched for control, applicability to different driving environments is good, the problem of brake disc abrasion caused by misoperation is solved, and the service life of a brake system is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle braking, and in particular to an automatic parking device for an electric tricycle. Background Art

[0002] At present, in the field of short-distance transportation and personal travel, electric tricycles have been widely used due to their advantages such as economical, convenient operation and good cargo capacity. As for the parking function, it is the key to ensure the safe parking of electric tricycles.

[0003] Most traditional electric tricycle parking mechanisms use a relatively simple manual mechanical parking method, such as a common structure in which a handbrake lever is connected to a steel wire pull line. In actual practical use, this parking method is relatively cumbersome to operate, and each time the vehicle is parked, the handbrake lever needs to be manually pulled up, and it is necessary to ensure that the lever is pulled up with sufficient force to effectively achieve parking. The existing automatic parking system for electric tricycles needs to be equipped with a variety of sensors to detect the vehicle status and transmit the signal to the electronic control unit (ECU). The ECU receives the signal, calculates the required braking force, and then issues a command to the brake actuator. However, the structure of this parking system is relatively complex, the response speed is slow, the adaptability to complex environments is poor, and fault diagnosis is difficult. Based on the above-mentioned prior art, it is urgent to design an automatic parking device that does not require sensors and programs for control. Summary of the invention

[0004] In order to solve the above-mentioned problems of the prior art, the present invention provides an automatic parking device for an electric tricycle, which simplifies the parking operation, has good applicability to different driving environments, solves the problem of brake disc wear caused by not releasing the handbrake when the vehicle is driving, and improves the service life of the braking system.

[0005] In order to achieve the above-mentioned object, the present invention provides an automatic parking device for an electric tricycle, comprising an outer shell, and a floating rack, a rack seat and an opening and closing mechanism installed in the outer shell;

[0006] The outer shell is fixed to the chassis of the vehicle; the floating rack and the rack seat are arranged opposite to each other in the height direction, and the floating rack is relatively located at the top of the rack seat;

[0007] The rack seat is slidably connected to the outer shell, and one end of the rack seat is connected to the front brake rod of the vehicle body, and the front brake rod is connected to the brake pedal through a cable;

[0008] The floating rack can float up and down along a sliding direction perpendicular to the rack seat, and the opening and closing mechanism is arranged between the floating rack and the rack seat, and can drive the floating rack to float up and down;

[0009] The two ends of the outer side walls of the floating rack and the rack seat close to each other are formed with toothed parts that can mesh with each other; when the brake pedal is stepped on, the brake pedal can drive the rack seat to move forward through the front brake rod, so that the toothed parts between the rack seat and the floating rack mesh with each other.

[0010] Furthermore, the opening and closing mechanism includes an opening and closing block, a connecting shaft, a connecting block and a transmission cable; a groove portion for installing the opening and closing mechanism is formed in the middle of the outer side walls where the rack seat and the floating rack are close to each other; the connecting shaft is inserted into the groove portion between the floating rack and the rack seat, and both ends of the connecting shaft are rotatably connected to the outer shell; one end of the opening and closing block is fixedly sleeved outside the connecting shaft, and the opening and closing block is located in the groove portion between the floating rack and the rack seat; one end of the connecting shaft is fixedly connected to the connecting block, and the end of the connecting block away from the connecting shaft is connected to the starting handle of the vehicle through a transmission cable.

[0011] Furthermore, the opening and closing mechanism also includes a reset spring piece, a blocking piece is fixed to the inner wall of the outer shell, one end of the reset spring piece abuts against the blocking piece, and the other end abuts against the side wall of the connecting block.

[0012] Furthermore, a return spring is provided on the top wall of the floating rack, one end of the return spring abuts against the floating rack, and the other end of the return spring abuts against the inner wall of the outer shell.

[0013] Furthermore, the outer shell includes a left shell, a right shell and a top plate, the bottom inner wall of the left shell is provided with a first connecting column, the inner wall of the bottom plate of the right shell is provided with a second connecting column, the outer end surface of the second connecting column is fixed with a positioning rod, the first connecting column is provided with a positioning slot for inserting the positioning rod, and the tops of the left shell and the right shell are connected to the two sides of the top plate by screws.

[0014] Furthermore, a guide column is fixed to the inner wall of the top plate, the return spring is sleeved outside the guide column, one end of the guide column passes through the floating rack, a limiting plate is provided at the end of the guide column that passes through the floating rack, and a locking screw is threadedly connected to the end of the guide column that passes through the floating rack, and the limiting plate is relatively fixed to the rack through the locking screw.

[0015] Furthermore, one side of the left shell body protrudes outward to form a mounting portion, and the connecting block and the reset spring piece of the opening and closing mechanism are both located in the mounting portion.

[0016] Beneficial effects of the present invention:

[0017] An automatic parking device for an electric tricycle of the present invention utilizes an opening and closing mechanism connected to a starting handle to drive a floating rack to start up and down, switches the meshing or misalignment relationship between the floating rack and the rack seat, and then only needs to step on the brake pedal to achieve continuous parking, thereby simplifying the parking operation, and eliminating the need for sensors and programs to coordinate control. It has good applicability to different driving environments, solves the problem of brake disc wear caused by failure to release the handbrake when the vehicle is driving, and improves the service life of the braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a partial exploded view used to reflect the internal structure of the outer shell in the present invention.

[0020] Figure 3 It is a top view of the overall structure of the present invention.

[0021] Figure 4 is along Figure 3 Section view along line AA.

[0022] Figure 5 yes Figure 4 A partial enlarged view of area A in the middle.

[0023] Figure 6 is along Figure 3 Sectional view along line BB.

[0024] Figure 7 It is a schematic diagram of the structure of the present invention after the outer shell is hidden.

[0025] Figure 8 It is a schematic diagram of the working state structure in the natural state in the actual application of the present invention.

[0026] Fig. 9 It is a schematic diagram of the working state structure of stepping on the brake pedal in practical application of the present invention.

[0027] Fig.10 It is a schematic diagram of the working state structure of the rotating start handle in the actual application of the present invention.

[0028] In the figure: 1. outer shell; 11. left shell; 111. positioning slot; 112. mounting portion; 12. right shell; 121. positioning rod; 13. slide groove; 14. top plate; 141. guide column; 2. floating rack; 21. reset spring; 22. limit plate; 23. locking screw; 3. rack seat; 31. sliding convex strip; 32. cable link joint; 33. front brake rod; 34. brake connecting rod; 35. toothed portion; 36. groove portion; 4. opening and closing mechanism; 41. opening and closing block; 42. connecting shaft; 43. connecting block; 44. block; 45. reset spring; 46. transmission cable; 5. brake pedal; 6. starting handle. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings.

[0030] The invention discloses an automatic parking device for an electric tricycle.

[0031] Reference Figures 1 to 4 An automatic parking device for an electric tricycle comprises an outer shell 1 and a floating rack 2, a rack seat 3 and an opening and closing mechanism 4 installed in the outer shell 1; wherein the outer shell 1 is fixed to the chassis of the vehicle, and the outer shell 1 comprises a left shell 11, a right shell 12 and a top plate 14, the left shell 11 and the right shell 12 are connected to form a shell structure with an open top and closed side walls, and the tops of the left shell 11 and the right shell 12 are connected and fixed to both sides of the top plate 14 by screws. In order to ensure the stability of the structure of the outer shell 1 and the convenience of assembly, a first connecting column is integrally formed on the inner side wall of the bottom of the left shell 11, and a second connecting column is integrally formed on the inner side wall of the bottom of the right shell 12, and a positioning rod 121 is integrally formed on the outer end surface of the second connecting column, and a positioning slot 111 for inserting the positioning rod 121 is provided on the outer end surface of the first connecting column; then when the outer shell 1 is assembled and fixed, the positioning rod 121 is inserted into the positioning slot 111. A mounting portion 112 is formed in the middle of the outer side wall of the left housing 11 and protrudes outward. The mounting portion 112 is used to provide a certain mounting space for the opening and closing mechanism 4 .

[0032] Reference Figures 1 to 4 The floating rack 2 and the rack seat 3 are arranged opposite to each other in the height direction, and the floating rack 2 is relatively located at the top of the rack seat 3; the rack seat 3 is slidably connected to the outer shell 1; sliding ridges 31 are formed on both sides of the length direction of the bottom of the rack seat 3, and the inner walls of the left shell 11 and the right shell 12 are correspondingly provided with sliding grooves 13, and the sliding ridges 31 are located in the sliding grooves 13, and then the rack seat 3 is slidably connected to the inner wall of the sliding groove 13 of the outer shell 1 through the sliding ridges 31.

[0033] Reference Figures 1 to 4The two ends of the rack seat 3 are fixed with cable joints 32 through locking nuts. One end of the rack seat 3 is hinged to the front brake rod 33 on the vehicle body through the cable joint 32. The front brake rod 33 is connected to the brake pedal 5 through a cable. Then, the brake pedal 5 is stepped on. The brake pedal 5 can drive the rack seat 3 to slide forward through the front brake rod 33; the other end of the rack seat 3 is hinged to the brake connecting rod 34 on the vehicle body.

[0034] Reference Figures 4 to 7 The floating rack 2 can float up and down along the sliding direction perpendicular to the rack seat 3. The top wall of the floating rack 2 is provided with a reset spring 21. One end of the reset spring 21 abuts against the floating rack 2, and the other end abuts against the inner wall of the outer shell 1. A guide post 141 is fixed to the inner wall of the top plate 14. The reset spring 21 is sleeved outside the guide post 141, which plays a guiding role in the expansion and contraction of the reset spring 21. One end of the guide post 141 passes through the floating rack 2. The floating rack 2 can move up and down along the guide post 141, which plays a guiding role in the movement of the floating rack 2; a limiting plate 22 is provided at one end of the guide post 141 passing through the floating rack 2, and a locking screw 23 is threadedly connected to one end of the guide post 141 passing through the floating rack 2. The limiting plate 22 is relatively fixed to the outer shell 1 through the locking screw 23; the limiting plate 22 plays a role of limiting the bottom end of the floating rack 2 to prevent the floating rack 2 from detaching from the guide post 141.

[0035] Reference Figures 4 to 7 , toothed portions 35 that can mesh with each other are formed at the two ends of the outer side walls of the floating rack 2 and the rack seat 3 that are close to each other; in the natural state, the toothed portions 35 between the floating rack 2 and the rack seat 3 are misaligned; when the brake pedal 5 is stepped on, the front brake rod 33 can drive the rack seat 3 to move forward, so that the toothed portions 35 between the rack seat 3 and the floating rack 2 are meshed with each other; and in the process of the rack seat 3 sliding forward, the toothed portion 35 on the rack seat 3 abuts against the toothed portion 35 on the floating rack 2, pushing the floating rack 2 to move up and down, and will not cause interference or obstruction to the forward sliding of the rack seat 3; when the brake pedal 5 is released, the meshing action between the rack seat 3 and the floating rack 2 hinders the rack seat 3 from sliding backward, thereby maintaining the parking state.

[0036] Reference Figures 4 to 7The opening and closing mechanism 4 is arranged between the floating rack 2 and the rack seat 3, and can drive the floating rack 2 to float up and down. The opening and closing mechanism 4 includes an opening and closing stopper 41, a connecting shaft 42, a connecting block 43, a reset spring 45 and a transmission cable 46; a groove portion 36 for installing the opening and closing mechanism 4 is formed in the middle of the outer wall where the rack seat 3 and the floating rack 2 are close to each other; the connecting shaft 42 is inserted into the groove portion 36 between the floating rack 2 and the rack seat 3, and the two ends of the connecting shaft 42 are rotatably connected to the outer shell 1 through bearings; one end of the opening and closing stopper 41 is fixedly sleeved outside the connecting shaft 42, and the opening and closing stopper 41 is located in the groove portion 36 between the floating rack 2 and the rack seat 3; one end of the connecting shaft 42 is fixedly connected to the connecting block 43, and the end of the connecting block 43 away from the connecting shaft 42 is connected to the starting handle 6 of the vehicle through the transmission cable 46. The connecting block 43 is located in the mounting portion 112 of the left housing 11 . A blocking piece 44 is fixed to the inner wall of the mounting portion 112 . One end of the reset spring 45 abuts against the blocking piece 44 , and the other end abuts against the side wall of the connecting block 43 .

[0037] The working principle of the automatic parking device for electric tricycle of the present invention: Figure 8 When the vehicle is in a stopped and non-braking natural state, the toothed portion 35 between the rack seat 3 and the floating rack 2 is misaligned, the return spring 21 and the return spring 45 are in a natural state, and the opening and closing mechanism 4 does not lift up the floating rack 2;

[0038] Reference Fig. 9 When the vehicle stops, the brake pedal 5 is pressed, and the brake pedal 5 drives the rack seat 3 to move forward through the front brake rod 33, so that the toothed portion 35 between the rack seat 3 and the floating rack 2 is engaged, and the brake pedal 5 is released at this time. Due to the limiting effect of the engagement between the rack seat 3 and the floating rack 2, the rack seat 3 is restricted from sliding to the initial natural state, and then the brake pedal 5 will not bounce up, thereby achieving continuous parking.

[0039] Reference Fig.10When the vehicle starts running, the starting handle 6 is turned, and the starting handle 6 drives the connecting block 43 to rotate around the center of the connecting shaft 42 through the transmission cable 46. In this process, the reset spring 45 is compressed and deformed, and then the connecting block 43 drives the opening and closing block 41 to rotate through the connecting shaft 42. During the rotation of the opening and closing block 41, it abuts against the floating rack 2 and lifts the floating rack 2. In this process, the reset spring 21 is compressed and deformed; the floating rack 2 is lifted, so that the floating rack 2 is separated from the rack seat 3, and then the brake pedal 5 is bounced up to cancel the vehicle braking. At this time, the starting handle 6 is released, and the elastic force of the reset spring 21 presses down the floating rack 2 to reset the floating rack 2; the elastic force of the reset spring 45 drives the connecting block 43 to reset. During the driving process of the vehicle, it is necessary to keep the operation state of twisting the starting handle 6, so that the opening and closing block 41 is always in the state of lifting the floating rack 2, thereby preventing the meshing and locking between the floating rack 2 and the rack seat 3.

[0040] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic parking device for an electric tricycle, characterized in that: It comprises an outer shell (1), a floating rack (2), a rack seat (3) and an opening and closing mechanism (4) installed in the outer shell (1); The outer shell (1) is fixed to the chassis of the vehicle; the floating rack (2) and the rack seat (3) are arranged relative to each other in the height direction, and the floating rack (2) is relatively located at the top of the rack seat (3); The rack seat (3) is slidably connected to the outer shell (1), and one end of the rack seat (3) is connected to a front brake rod (33) of the vehicle body, and the front brake rod (33) is connected to a brake pedal (5) via a cable; The floating rack (2) can float up and down along a sliding direction perpendicular to the rack seat (3); the opening and closing mechanism (4) is arranged between the floating rack (2) and the rack seat (3) and can drive the floating rack (2) to float up and down; The two ends of the outer side walls of the floating rack (2) and the rack seat (3) that are close to each other are formed with toothed portions (35) that can mesh with each other; when the brake pedal (5) is stepped on, the brake pedal (5) can drive the rack seat (3) to move forward through the front brake pull rod (33), so that the toothed portions (35) between the rack seat (3) and the floating rack (2) mesh with each other.

2. The automatic parking device for an electric tricycle according to claim 1, characterized in that: The opening and closing mechanism (4) comprises an opening and closing block (41), a connecting shaft (42), a connecting block (43) and a transmission cable (46); a groove portion (36) for installing the opening and closing mechanism (4) is formed in the middle of the outer side wall where the rack seat (3) and the floating rack (2) are close to each other; the connecting shaft (42) is inserted into the groove portion (36) between the floating rack (2) and the rack seat (3), and both ends of the connecting shaft (42) are rotatably connected to the outer shell (1); one end of the opening and closing block (41) is fixedly sleeved outside the connecting shaft (42), and the opening and closing block (41) is located in the groove portion (36) between the floating rack (2) and the rack seat (3); one end of the connecting shaft (42) is fixedly connected to the connecting block (43), and the end of the connecting block (43) away from the connecting shaft (42) is connected to the starting handle (6) of the vehicle through the transmission cable (46).

3. The automatic parking device for an electric tricycle according to claim 2, characterized in that: The opening and closing mechanism (4) further comprises a reset spring sheet (45), a blocking sheet (44) being fixed to the inner wall of the outer shell (1), one end of the reset spring sheet (45) abutting against the blocking sheet (44), and the other end abutting against the side wall of the connecting block (43).

4. The automatic parking device for an electric tricycle according to claim 3, characterized in that: The top wall of the floating rack (2) is provided with a return spring (21), one end of the return spring (21) abuts against the floating rack (2), and the other end abuts against the inner wall of the outer shell (1).

5. The automatic parking device for an electric tricycle according to claim 4, characterized in that: The outer shell (1) comprises a left shell (11), a right shell (12) and a top plate (14); a first connecting column is arranged on the inner wall of the bottom of the left shell (11); a second connecting column is arranged on the inner wall of the bottom plate of the right shell (12); a positioning rod (121) is fixed to the outer end surface of the second connecting column; a positioning slot (111) for inserting the positioning rod (121) is provided on the first connecting column; the tops of the left shell (11) and the right shell (12) are connected to the two sides of the top plate (14) by screws.

6. The automatic parking device for an electric tricycle according to claim 5, characterized in that: A guide column (141) is fixed to the inner wall of the top plate (14), and the return spring (21) is sleeved outside the guide column (141). One end of the guide column (141) passes through the floating rack (2), and a limiting plate (22) is arranged at the end of the guide column (141) that passes through the floating rack (2). The end of the guide column (141) that passes through the floating rack (2) is threadedly connected with a locking screw (23), and the limiting plate (22) is relatively fixed to the guide column (141) through the locking screw (23).

7. The automatic parking device for an electric tricycle according to claim 5, characterized in that: One side of the left housing (11) protrudes outward to form a mounting portion (112), and the connecting block (43) and the reset spring sheet (45) of the opening and closing mechanism (4) are both located in the mounting portion (112).

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