Front and back synchronous brake device and electric tricycle

Abstract

The utility model relates to a front and rear synchronous brake device and an electro-tricycle, which comprise a brake box, a transmission swing arm positioned in the brake box, and a front wheel brake cable, a rear wheel brake cable, a hand brake cable and a foot brake cable which are respectively connected on the transmission swing arm, a spring is connected between the transmission swing arm and the inside of the brake box, and the transmission swing arm is rotatably connected in the brake box. The front wheel brake cable and the rear wheel brake cable are located on the two sides of the transmission swing arm respectively and extend out of the two sides of the brake box. A traditional brake connecting rod mechanism is replaced with the brake box pull wire, the brake pull wire is attached to the vehicle frame, and under the condition that a bumpy road surface or protrusions exist on the ground, the vehicle passing rate is effectively increased, and safety and reliability in the driving process are improved. In addition, a brake stay wire can be driven by a hand brake and a foot brake, the front wheel and the rear wheel are controlled to be braked at the same time, braking safety is improved, potential safety hazards in the driving process are reduced to a great extent, and the electric bicycle has high application and popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle brakes, in particular to a front and rear synchronous brake device and an electric tricycle. Background Art

[0002] Electric tricycles are three-wheeled vehicles that use batteries as energy sources and motors as power sources to carry cargo, passengers or other special purposes. They are widely used in short-distance transportation in households, urban and rural areas, factories, mining areas, sanitation, community cleaning, etc. due to their strong applicability, maneuverability, simple maintenance, easy repair and low price, promoting the low-carbon development of the transportation industry.

[0003] The braking function of tricycles is an important function to avoid sudden dangerous events, which lays the foundation for the importance of the braking structure and makes the braking structure a vital component of the vehicle. Nowadays, most tricycles use a hard-connected multi-joint single-hook pull rod brake structure. The brake pull rod on the tricycle frame chassis is too close to the ground. When colliding with stones and other protrusions during driving, the brake connecting rod may bend or drag the bottom, resulting in a low vehicle passing rate. At the same time, because the brake connecting rod structure is hard-connected, when carrying too many people and goods, the hard-connected straight pull and push effect may cause the brakes to drive or even get stuck, resulting in abnormal operation of the motor and burning of the motor. In addition, traditional tricycles generally use rear-wheel brakes, which cannot guarantee braking safety in sudden situations, and are prone to driving safety hazards when driving on the road. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a front and rear synchronous brake device and an electric tricycle.

[0005] The utility model is realized through the following technical solutions:

[0006] A front and rear synchronous braking device comprises a brake box, a transmission swing arm located in the brake box, and a front wheel brake line, a rear wheel brake line, a hand brake line, and a foot brake line respectively connected to the transmission swing arm, a spring is connected between the transmission swing arm and the inside of the brake box, the transmission swing arm is rotatably connected to the brake box, the front wheel brake line and the rear wheel brake line are respectively located on both sides of the transmission swing arm and extend from both sides of the brake box.

[0007] According to the above technical solution, preferably, a positioning shaft is fixedly connected inside the brake box, and the transmission swing arm is rotatably connected to the positioning shaft via a bearing.

[0008] According to the above technical solution, preferably, the front wheel brake line and the rear wheel brake line are respectively located on both sides of the positioning axis, and the connection positions of the front wheel brake line, the rear wheel brake line and the transmission swing arm are respectively at the same distance from the positioning axis.

[0009] According to the above technical solution, preferably, the distance between the connection position of the handbrake line, foot brake line and transmission swing arm and the positioning axis is greater than the distance between the connection position of the front wheel brake line or the rear wheel brake line and the transmission swing arm and the positioning axis.

[0010] According to the above technical solution, preferably, the distance between the connection position of the handbrake line and the transmission swing arm and the positioning axis is greater than the distance between the connection position of the foot brake line and the transmission swing arm and the positioning axis.

[0011] According to the above technical solution, preferably, one or more ends of the front wheel brake line, the rear wheel brake line, the hand brake line and / or the foot brake line are provided with a connecting terminal for connecting to the transmission swing arm.

[0012] According to the above technical solution, preferably, an arcuate hole groove is provided on the surface of the transmission swing arm, and after the front wheel brake line, the rear wheel brake line, the hand brake line and / or the foot brake line pass through the transmission swing arm, the connecting end is located in the arcuate hole groove.

[0013] According to the above technical solution, preferably, two rear wheel brake lines are provided, a line inlet channel is provided on the side of the brake box, a slider is slidably connected in the line inlet channel, so that the two rear wheel brake lines are arranged longitudinally in the line inlet channel.

[0014] According to the above technical solution, preferably, the brake box includes an upper cover and a lower cover, and the upper cover and the lower cover are buckled relative to each other to form the brake box.

[0015] The present application also discloses an electric tricycle, comprising the above-mentioned front and rear synchronous brake device and a chassis, wherein a connecting ear is fixedly connected to the side of the brake box, and the brake box and the chassis are fixedly connected at the connecting ear by bolts.

[0016] The beneficial effects of the utility model are:

[0017] The utility model replaces the traditional brake linkage mechanism by a brake box cable, so that the brake cable fits the frame, effectively improving the vehicle passing rate on bumpy roads or when there are protruding objects on the ground, improving the safety and reliability of the driving process, and reducing the failure rate of the brake system;

[0018] At the same time, by setting a transmission swing arm, the front wheel brake line and the rear wheel brake line extend from both sides of the brake box respectively, so that the brake line to the front wheel and the rear wheel can be clearly routed without being messy, and at the same time, it can ensure that the operation of the hand brake and the foot brake is more convenient and labor-saving;

[0019] In addition, the utility model can drive the brake cable through the handbrake and footbrake to control the braking of the front and rear wheels at the same time, thereby improving braking safety, greatly reducing safety hazards during driving, and having a high application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the brake box of the utility model.

[0022] Figure 3 This is a three-dimensional structure diagram of the brake box of the utility model. Figure 1 .

[0023] Figure 4 This is a three-dimensional structure diagram of the brake box of the utility model. Figure 2 .

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the incoming line channel part of the utility model.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the slider part of the utility model.

[0026] Figure 7 This is a three-dimensional structure diagram of the transmission swing arm of the utility model. Figure 1 .

[0027] Figure 8 This is a three-dimensional structure diagram of the transmission swing arm of the utility model. Figure 2 .

[0028] Fig. 9 It is a schematic diagram of the installation structure of the utility model.

[0029] In the figure: 1. brake box; 2. connecting ear; 3. rear wheel brake line; 4. front wheel brake line; 5. foot brake line; 6. hand brake line; 7. transmission swing arm; 8. spring; 9. connecting end; 10. positioning shaft; 11. wire inlet channel; 12. wire inlet opening; 13. wire inlet hole; 14. arc hole groove; 15. chassis. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and the best embodiment. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0031] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1: As shown in the figure, the utility model includes a brake box 1, a transmission swing arm 7 located in the brake box 1, and a front wheel brake line 4, a rear wheel brake line 3, a hand brake line 6, and a foot brake line 5 respectively connected to the transmission swing arm 7. A spring 8 is connected between the transmission swing arm 7 and the inside of the brake box 1. In this example, the spring 8 can be a compression spring, a tension spring, a torsion spring, or a composite spring, which is used to make the transmission swing arm 7 in an initial state, and the front wheel brake line 4 and the rear wheel brake line 3 connected thereto are in an unstretched state.

[0034] The transmission swing arm 7 is rotatably connected to the brake box 1, and the front wheel brake wire 4 and the rear wheel brake wire 3 are respectively located on both sides of the transmission swing arm 7 and extend from both sides of the brake box 1. At this time, the brake wire does not need to turn when it is routed to the front wheel and the rear wheel, so that the routing of the brake wire on the chassis 15 is clear and not messy. When the hand brake wire 6 or the foot brake wire 5 pulls the transmission swing arm 7, the transmission swing arm 7 can pull the front wheel brake wire 4 and the rear wheel brake wire 3 to achieve front and rear wheel braking.

[0035] Among them, a positioning shaft 10 is fixedly connected in the brake box 1, and the transmission swing arm 7 is rotatably connected to the positioning shaft 10 through a bearing. The front wheel brake line 4 and the rear wheel brake line 3 are respectively located on both sides of the positioning shaft 10, and the connection positions of the front wheel brake line 4, the rear wheel brake line 3 and the transmission swing arm 7 are respectively at the same distance from the positioning shaft 10. This setting ensures that the front wheel / rear wheel synchronous braking is achieved during braking. Specifically, the hand brake line 6 and the foot brake line 5 are located on one side of the positioning shaft 10, and the distance between the connection position of the hand brake line 6, the foot brake line 5 and the transmission swing arm 7 and the positioning shaft 10 is greater than the distance between the connection position of the front wheel brake line 4 or the rear wheel brake line 3 and the transmission swing arm 7 and the positioning shaft 10, and preferably the distance between the connection position of the hand brake line 6 and the transmission swing arm 7 and the positioning shaft 10 is greater than the distance between the connection position of the foot brake line 5 and the transmission swing arm 7 and the positioning shaft 10. According to the principle of leverage, this setting can ensure that the hand brake operation is more labor-saving.

[0036] In addition, in this example, the brake box 1 preferably but not limited to includes an upper cover and a lower cover, which are relatively buckled to form the brake box 1, and a groove and a protrusion structure are provided between the upper cover and the lower cover to achieve the waterproof function of the brake box 1.

[0037] Embodiment 2: According to the technical solution recorded in Embodiment 1, the connection method of the front wheel brake line 4, the rear wheel brake line 3, the hand brake line 6, the foot brake line 5 and the transmission swing arm 7 may preferably be but not limited to: one or more ends of the front wheel brake line 4, the rear wheel brake line 3, the hand brake line 6 and / or the foot brake line 5 are provided with a connecting terminal 9. In this example, the connecting terminal 9 is preferably but not limited to a zinc alloy head, which is fixedly connected to the end of the brake line for connecting to the transmission swing arm 7.

[0038] According to the above embodiment, preferably, the surface of the transmission swing arm 7 is provided with an arcuate hole groove 14, and after the front wheel brake line 4, the rear wheel brake line 3, the hand brake line 6 and / or the foot brake line 5 pass through the transmission swing arm 7, the connecting terminal 9 is located in the arcuate hole groove 14. In the actual installation process, in this example, a wire entry opening 12 or a wire entry hole 13 is provided on the transmission swing arm 7, and the opening area of ​​the wire entry hole 13 is larger than the cross-sectional size of the connecting terminal 9. Each brake line enters through the wire entry opening 12 or the wire entry hole 13, and the connecting terminal 9 is located in the arcuate hole groove 14 to achieve connection with the transmission swing arm 7. At the same time, since the connecting terminal 9 is a spherical structure, the design of the arcuate hole groove 14 can effectively increase the force-bearing surface of the connecting terminal 9, so that it has better adhesion with the transmission swing arm 7, ensuring stable transmission during the braking process.

[0039] In addition, in this example, two rear wheel brake lines 3 are provided, and an inlet channel 11 is provided on the side of the brake box 1. The inlet channel 11 is an open structure, and a slider is slidably connected inside, so that the two rear wheel brake lines 3 are arranged longitudinally in the inlet channel 11. The sliding cooperation relationship between the slider and the inlet channel 11 facilitates the disassembly and assembly of the two rear wheel brake lines 3, and facilitates later maintenance and replacement.

[0040] Embodiment 3: The present application also discloses an electric tricycle, comprising the above-mentioned front and rear synchronous braking device and a chassis 15, wherein a connecting ear 2 is fixedly connected to the side of the brake box 1, and the brake box 1 and the chassis 15 are fixedly connected at the connecting ear 2 by bolts.

[0041] The utility model replaces the traditional brake linkage mechanism with a brake box cable, so that the brake cable is fitted to the frame, which effectively improves the vehicle's pass rate in the case of bumpy roads or protrusions on the ground, improves the safety and reliability of the driving process, and reduces the failure rate of the braking system; at the same time, by arranging a transmission swing arm, the front wheel brake cable and the rear wheel brake cable are respectively extended from the two sides of the brake box, so that the brake cable can be clearly routed to the front wheel and the rear wheel without being messy, and at the same time it can ensure that the operation of the handbrake and the foot brake is more convenient and labor-saving; in addition, the utility model can drive the brake cable through the handbrake and the footbrake to achieve simultaneous braking of the front and rear wheels, thereby improving braking safety, greatly reducing safety hazards during driving, and having a high application and promotion value.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A front and rear synchronous braking device, characterized in that: The invention comprises a brake box (1), a transmission swing arm (7) located in the brake box (1), and a front wheel brake line (4), a rear wheel brake line (3), a hand brake line (6), and a foot brake line (5) respectively connected to the transmission swing arm (7); a spring (8) is connected between the transmission swing arm (7) and the inside of the brake box (1); the transmission swing arm (7) is rotatably connected to the brake box (1); the front wheel brake line (4) and the rear wheel brake line (3) are respectively located on both sides of the transmission swing arm (7) and extend from both sides of the brake box (1).

2. A front and rear synchronous braking device according to claim 1, characterized in that: A positioning shaft (10) is fixedly connected inside the brake box (1), and the transmission swing arm (7) is rotationally connected to the positioning shaft (10) via a bearing.

3. A front and rear synchronous braking device according to claim 2, characterized in that: The front wheel brake line (4) and the rear wheel brake line (3) are respectively located on both sides of the positioning axis (10), and the connection positions of the front wheel brake line (4), the rear wheel brake line (3) and the transmission swing arm (7) are respectively at the same distance from the positioning axis (10).

4. A front and rear synchronous braking device according to claim 3, characterized in that: The distance between the connection position of the hand brake line (6), the foot brake line (5) and the transmission swing arm (7) and the positioning axis (10) is greater than the distance between the connection position of the front wheel brake line (4) or the rear wheel brake line (3) and the transmission swing arm (7) and the positioning axis (10).

5. A front and rear synchronous braking device according to claim 4, characterized in that: The distance between the connection position of the hand brake line (6) and the transmission swing arm (7) and the positioning axis (10) is greater than the distance between the connection position of the foot brake line (5) and the transmission swing arm (7) and the positioning axis (10).

6. The front and rear synchronous braking device according to claim 1, characterized in that: One or more ends of the front wheel brake line (4), the rear wheel brake line (3), the hand brake line (6) and / or the foot brake line (5) are provided with a connecting terminal (9) for connecting to the transmission swing arm (7).

7. A front and rear synchronous braking device according to claim 6, characterized in that: The surface of the transmission swing arm (7) is provided with an arcuate hole groove (14); after the front wheel brake line (4), the rear wheel brake line (3), the hand brake line (6) and / or the foot brake line (5) pass through the transmission swing arm (7), the connection end (9) is located in the arcuate hole groove (14).

8. The front and rear synchronous braking device according to claim 1, characterized in that: Two rear wheel brake lines (3) are provided, and a line inlet channel (11) is provided on the side of the brake box (1). A slider is slidably connected in the line inlet channel (11), so that the two rear wheel brake lines (3) are arranged in the line inlet channel (11) along the longitudinal direction.

9. The front and rear synchronous braking device according to any one of claims 1 to 8, characterized in that: The brake box (1) comprises an upper cover and a lower cover, and the upper cover and the lower cover are buckled relative to each other to form the brake box (1).

10. An electric tricycle, comprising the front and rear synchronous braking device according to any one of claims 1 to 9, characterized in that: It also comprises a chassis (15), a connecting ear (2) being fixedly connected to the side of the brake box (1), and the brake box (1) and the chassis (15) are fixedly connected at the connecting ear (2) by bolts.

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