Folding electric tricycle frame

Abstract

The invention discloses a folding electro-tricycle frame, and relates to the technical field of electro-tricycles, the folding electro-tricycle frame comprises a front support, the bottom end of the front support is provided with a front wheel, the top end of the side wall of the front support is fixedly connected with a convex block, the convex block is rotatably connected with a rear support, and the end, away from the convex block, of the rear support is fixedly connected with a rotating shaft; rear wheels are mounted at two ends of the rotating shaft; the bottom end of the side wall of the front support is fixedly connected with a rotating base, and a supporting frame is rotationally arranged on the rotating base. According to the folding type electro-tricycle frame, by arranging the supporting frame, the first limiting hole, the second limiting hole and other structures, the distance between the seat and a handlebar of the front support is conveniently adjusted, the requirements of users of different figures are met, and the using flexibility of the electro-tricycle frame is improved; the supporting frame is rotationally arranged on the rotating base, the folding and recycling effect can be achieved, and the use efficiency of the electro-tricycle frame is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric tricycles, and in particular to a foldable electric tricycle frame. Background Art

[0002] As a means of transportation, electric tricycles are widely used in short-distance transportation fields such as families, urban and rural areas, individual rentals, factories, mining areas, sanitation, and community cleaning. Electric tricycles are very popular among the middle-aged and elderly people for their strong applicability, flexibility, simple maintenance, convenient repair, and low price. Moreover, electric tricycles can flexibly travel between narrow roads, and are very practical in narrow alleys and lanes. They are very convenient for driving and parking.

[0003] In the prior art foldable electric tricycle, the distance between the seat and the handlebars is difficult to adjust according to the body shape of the user, and the efficiency of use needs to be improved.

[0004] Therefore, it is necessary to propose a foldable electric tricycle frame to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a foldable electric tricycle frame to solve the problem that the distance between the seat and the handlebars of the foldable electric tricycle in the prior art is difficult to adjust according to the body shape of the user and the use efficiency needs to be improved.

[0006] To achieve the above object, the present invention provides the following technical solution: a foldable electric tricycle frame, comprising a front bracket, a front wheel is installed at the bottom end of the front bracket, a convex block is fixedly connected to the top end of the side wall of the front bracket, a rear bracket is rotatably connected to the convex block, an end of the rear bracket away from the convex block is fixedly connected to a rotating shaft, and rear wheels are installed at both ends of the rotating shaft; The bottom end of the side wall of the front bracket is fixedly connected with a swivel seat, a support frame is rotatably arranged on the swivel seat, and the support frame and the rear bracket are cross-distributed in an X shape, the support frame and the rear bracket are slidably connected, a seat is arranged at one end of the support frame away from the swivel seat, a plurality of first limiting holes are opened on the support frame, a plurality of second limiting holes are opened on the rear bracket, and the corresponding first limiting holes and the second limiting holes are matched by a first latch; An inner cavity is arranged inside the seat, and an air bag is arranged inside the inner cavity. When the air bag expands, the elasticity of the seat decreases, and when the air bag contracts, the elasticity of the seat increases.

[0007] Preferably, a rotating groove is provided at one end of the support frame away from the rotating seat, and a rotating block is rotatably connected inside the rotating groove. A through groove is penetrated through the rotating block, and a threaded cylinder is rotatably connected inside the through groove. The internal thread of the threaded cylinder is connected to a threaded rod, and the threaded rod penetrates the upper surface of the threaded cylinder, and the seat is fixedly connected to the top of the threaded cylinder.

[0008] Preferably, a limiting groove is provided on the upper surface of the rotating block, a limiting rod is slidably arranged inside the limiting groove, and the limiting rod is fixedly connected to the bottom of the seat.

[0009] Preferably, an adjusting block is fixedly connected to the bottom of the threaded barrel.

[0010] Preferably, an arc plate is provided inside the rotating groove, a card slot is opened on the arc plate, the card slot cooperates with the adjustment block, a plurality of third limit holes are opened on the arc plate, a fourth limit hole is opened on the support frame, and the fourth limit hole is connected with the rotating groove, and the fourth limit hole cooperates with the corresponding third limit hole through a second pin.

[0011] Preferably, a shock absorbing assembly is provided inside the inner cavity, and the shock absorbing assembly includes a first plate, a second plate and a spring, the first plate is fixedly connected to the top of the inner cavity, the second plate is fixedly connected to the bottom of the inner cavity, the top end of the airbag is fixedly connected to the first plate, the bottom end of the airbag is fixedly connected to the second plate, one end of the spring is fixedly connected to the first plate, and the other end of the spring is fixedly connected to the second plate.

[0012] Preferably, the spring is provided in plurality.

[0013] Preferably, a circular groove is formed at one end of the seat away from the front bracket, an air cylinder is fixedly connected to the inside of the circular groove, the air cylinder is communicated with the airbag, and a piston block is slidably arranged inside the air cylinder.

[0014] Preferably, the inner thread of the air cylinder is connected with a thread block, the thread block is located on the side of the piston block facing away from the airbag, and the thread block is rotatably connected to the piston block.

[0015] Preferably, an adjusting rod is fixedly connected to a surface of the threaded block facing away from the piston block, and a hook is rotatably connected to an end of the adjusting rod away from the threaded block.

[0016] Technical effects and advantages of the present invention: The present invention is convenient for adjusting the distance between the seat and the handlebar of the front bracket by arranging structures such as the support bracket, the first limiting hole and the second limiting hole, so as to meet the needs of users of different body shapes and improve the flexibility of using the electric tricycle frame. At the same time, since the rear bracket is rotatably arranged on the protrusion and the support bracket is rotatably arranged on the rotating seat, the effect of folding and recycling can be achieved, thereby improving the use efficiency of the electric tricycle frame. By setting structures such as a rotating block, a threaded cylinder and a limiting groove, the height and tilt angle of the seat can be flexibly adjusted to match the change in the distance between the seat and the front bracket handlebar, further improving the flexibility of the electric tricycle frame; The arc plate is connected to the adjustment block through the card slot, and the fourth limiting hole is connected to one of the third limiting holes correspondingly. The second latch is inserted into the fourth limiting hole and the corresponding third limiting hole to complete the positioning of the arc plate, so that the angle of the rotating block is fixed, thereby fixing the inclination angle of the seat. At the same time, the arc plate is connected to the adjustment block through the card slot, so that the threaded barrel will not rotate at will, achieving the effect of limiting the threaded barrel, and the height of the seat will not change at will, thereby improving the stability of the seat in use; The first plate, the second plate and the spring are arranged to achieve a shock-absorbing effect and improve the comfort of the seat; By setting an airbag and rotating the threaded block, the piston block is driven to move toward the airbag, so that the gas inside the air cylinder enters the airbag, causing the airbag to expand; when the threaded block is rotated in the opposite direction, the piston block is driven to move away from the airbag, so that the gas inside the airbag enters the air cylinder, causing the airbag to shrink and become smaller, thereby adjusting the elasticity of the seat to meet the needs of different users; A hook is provided to hang materials carried by the user, thereby increasing the use function of the foldable electric tricycle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the foldable electric tricycle frame from the first perspective of the present invention.

[0018] Figure 2 This is a schematic structural diagram of the foldable electric tricycle frame from a second viewing angle of the present invention.

[0019] Figure 3 This is a schematic structural diagram of the foldable electric tricycle frame from a third viewing angle of the present invention.

[0020] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0021] Figure 5 This is a schematic diagram of the adjustment block and the card slot structure of the present invention.

[0022] Figure 6 It is a schematic diagram of the support frame and arc plate structure of the present invention.

[0023] In the figure: 1. front bracket; 2. convex block; 3. rear bracket; 4. front wheel; 5. rotating shaft; 6. rear wheel; 7. rotating seat; 8. support frame; 9. seat; 10. first limiting hole; 11. second limiting hole; 12. first latch; 13. rotating groove; 14. rotating block; 15. threaded cylinder; 16. threaded rod; 17. limiting groove; 18. limiting rod; 19. adjusting block; 20. arc plate; 21. slot; 22. third limiting hole; 23. fourth limiting hole; 24. second latch; 25. inner cavity; 26. first plate; 27. second plate; 28. spring; 29. ​​airbag; 30. air cylinder; 31. threaded block; 32. piston block; 33. hook; 34. adjusting rod. DETAILED DESCRIPTION

[0024] The present invention provides Figure 1 to Figure 6 A foldable electric tricycle frame is shown, comprising a front bracket 1, a handlebar is arranged at the top of the front bracket 1, and a device box is also arranged on the front bracket 1, and the interior of the device box is used to install an electric drive device (motor), a battery and other structures.

[0025] A front wheel 4 is installed at the bottom end of the front bracket 1, a protrusion 2 is fixedly connected to the top end of the side wall of the front bracket 1, a rear bracket 3 is rotatably connected to the protrusion 2, and an end of the rear bracket 3 away from the protrusion 2 is fixedly connected to a rotating shaft 5, and rear wheels 6 are installed at both ends of the rotating shaft 5. Two rear wheels 6 are provided, and cooperate with the front wheel 4 to form a three-wheel structure, thereby improving the stability of riding.

[0026] The bottom end of the side wall of the front bracket 1 is fixedly connected with a swivel seat 7, on which a support frame 8 is rotatably arranged, and the support frame 8 and the rear bracket 3 are cross-distributed in an X shape, and the support frame 8 is slidably connected with the rear bracket 3. A seat 9 is arranged at one end of the support frame 8 away from the swivel seat 7. The support frame 8 is provided with a plurality of first limiting holes 10, and the rear bracket 3 is provided with a plurality of second limiting holes 11, and the corresponding first limiting holes 10 and second limiting holes 11 are matched through a first latch 12.

[0027] During specific use, the support frame 8 is rotated to adjust the inclination angle of the support frame 8. At this time, the support frame 8 slides on the rear frame 3. The distance between the seat 9 and the handlebar of the front frame 1 is adjusted by adjusting the inclination angle of the support frame 8 to meet the needs of users of different body shapes, and a group of first limiting holes 10 are connected to the second limiting holes 11 accordingly.

[0028] After the adjustment is completed, the first latch 12 is inserted into the corresponding first limiting hole 10 and the second limiting hole 11 to limit the rear bracket 3 and the support frame 8 for the user to ride.

[0029] During actual use, a limiting structure, such as a nut, is provided on the first latch pin 12 so that the first latch pin 12 will not fall off at will, and can be adjusted according to specific use conditions.

[0030] In addition, since the rear bracket 3 is rotatably arranged on the protrusion 2, and the support frame 8 is rotatably arranged on the rotating seat 7, after the riding is finished, the first latch 12 is removed, and the Figure 3 , rotate the support frame 8 counterclockwise and rotate the rear support 3 clockwise to achieve the effect of folding and recycling.

[0031] By providing structures such as the support frame 8, the first limiting hole 10 and the second limiting hole 11, it is convenient to adjust the distance between the seat 9 and the handlebars of the front bracket 1 to meet the needs of users of different body shapes and improve the flexibility of the electric tricycle frame. At the same time, since the rear bracket 3 is rotatably set on the protrusion 2 and the support frame 8 is rotatably set on the swivel seat 7, the effect of folding and recycling can be achieved, thereby improving the use efficiency of the electric tricycle frame.

[0032] Taking into account that the inclination angle and height of the seat 9 will also change after the inclination angle of the support frame 8 is adjusted, a rotating groove 13 is opened at the end of the support frame 8 away from the swivel seat 7, and the internal rotation connection of the rotating groove 13 is connected with a rotating block 14, and a through groove is opened on the rotating block 14, and the internal rotation connection of the through groove is connected with a threaded cylinder 15, and the internal thread of the threaded cylinder 15 is connected with a threaded rod 16, and the threaded rod 16 passes through the upper surface of the threaded cylinder 15, the seat 9 is fixedly connected to the top of the threaded cylinder 15, and the bottom of the threaded cylinder 15 is fixedly connected with an adjustment block 19.

[0033] A limiting groove 17 is provided on the upper surface of the rotating block 14 . A limiting rod 18 is slidably arranged inside the limiting groove 17 . The limiting rod 18 is fixedly connected to the bottom of the seat 9 .

[0034] Specifically, when the seat 9 needs to be raised, the threaded cylinder 15 is rotated by the adjustment block 19. Since the threaded rod 16 is threadedly connected to the threaded cylinder 15, and with the cooperation of the limit groove 17 and the limit rod 18, the threaded rod 16 drives the seat 9 to move upward, and the limit rod 18 slides upward inside the limit groove 17.

[0035] When the seat 9 needs to be lowered, the threaded cylinder 15 is rotated in the opposite direction through the adjustment block 19. Since the threaded rod 16 is threadedly connected to the threaded cylinder 15 and with the cooperation of the limit groove 17 and the limit rod 18, the threaded rod 16 drives the seat 9 to move downward, and the limit rod 18 slides downward inside the limit groove 17.

[0036] At the same time, the rotating block 14 is rotatably arranged inside the rotating groove 13, so that the inclination angle of the seat 9 can be adjusted.

[0037] By setting structures such as the rotating block 14, the threaded cylinder 15 and the limiting groove 17, the height and the tilt angle of the seat 9 can be flexibly adjusted to match the change in the distance between the seat 9 and the handlebars of the front bracket 1, thereby further improving the flexibility of the use of the electric tricycle frame.

[0038] In order to fix the angle of the rotating block 14, an arc plate 20 is arranged inside the rotating groove 13, and a card slot 21 is opened on the arc plate 20, and the card slot 21 cooperates with the adjustment block 19. A plurality of third limiting holes 22 are opened on the arc plate 20, and a fourth limiting hole 23 is opened on the support frame 8. The fourth limiting hole 23 is connected with the rotating groove 13, and the fourth limiting hole 23 and the corresponding third limiting hole 22 are cooperated through a second pin 24.

[0039] Specifically, after the height adjustment of the seat 9 is completed, the seat 9 is adjusted to a suitable tilt angle by rotating the rotating block 14 in the rotating groove 13, and the arc plate 20 is clamped on the adjusting block 19 through the clamping groove 21 (refer to Figure 4 ), and make the fourth limiting hole 23 correspondingly connected to one of the third limiting holes 22, the second pin 24 is inserted into the fourth limiting hole 23 and the corresponding third limiting hole 22, to complete the positioning of the arc plate 20, so that the angle of the rotating block 14 is fixed, thereby fixing the inclination angle of the seat 9, and at the same time, the arc plate 20 is clamped on the adjustment block 19 through the card slot 21, so that the threaded tube 15 will not rotate arbitrarily, thereby achieving the effect of limiting the threaded tube 15, and the height of the seat 9 will not change arbitrarily, thereby improving the stability of the seat 9 when used.

[0040] A plurality of third limiting holes 22 are provided to enable flexible adjustment of the tilt angle of the seat 9 .

[0041] In addition, the adjustment block 19 can be set to a regular polygonal structure, and the slot 21 matches it to facilitate the docking and cooperation of the arc plate 20.

[0042] In order to improve the comfort of the seat 9, an inner cavity 25 is provided inside the seat 9, and a shock absorbing assembly is provided inside the inner cavity 25, and the shock absorbing assembly includes a first plate 26, a second plate 27 and a spring 28, the first plate 26 is fixedly connected to the top of the inner cavity 25, the second plate 27 is fixedly connected to the bottom of the inner cavity 25, one end of the spring 28 is fixedly connected to the first plate 26, and the other end of the spring 28 is fixedly connected to the second plate 27, and the spring 28 is provided in plurality. The first plate 26 can use a hard plate structure to ensure the stability of the support; the first plate 26 can use a plate rubber material to improve the comfort of use.

[0043] The first plate 26 , the second plate 27 and the spring 28 are provided to achieve a shock-absorbing effect and improve the comfort of the seat 9 .

[0044] In order to adjust the elasticity of the seat 9 and meet the needs of different users, an airbag 29 is arranged inside the inner cavity 25. When the airbag 29 expands, the elasticity of the seat 9 decreases, and when the airbag 29 contracts, the elasticity of the seat 9 increases. The top end of the airbag 29 is fixedly connected to the first plate 26, and the bottom end of the airbag 29 is fixedly connected to the second plate 27. By providing the airbag 29, the elasticity of the seat 9 can be adjusted to meet the needs of different users.

[0045] In order to adjust the gas inside the airbag 29, a circular groove is provided at one end of the seat 9 away from the front bracket 1, and a gas cylinder 30 is fixedly connected inside the circular groove. The gas cylinder 30 is in communication with the airbag 29, and a piston block 32 is slidably arranged inside the gas cylinder 30. The internal thread of the gas cylinder 30 is connected to a thread block 31, which is located on the side of the piston block 32 facing away from the airbag 29, and the thread block 31 is rotatably connected to the piston block 32.

[0046] Specifically, rotating the threaded block 31 drives the piston block 32 to move toward the airbag 29, so that the gas inside the air cylinder 30 enters the interior of the airbag 29, causing the airbag 29 to expand and become larger; when the threaded block 31 is rotated in the opposite direction, the piston block 32 is driven to move in a direction away from the airbag 29, so that the gas inside the airbag 29 enters the interior of the air cylinder 30, causing the airbag 29 to shrink and become smaller.

[0047] The friction coefficient between the threaded block 31 and the air cylinder 30 is appropriate, and random rotation will not occur; and a structure such as a latch may be provided between the threaded block 31 and the air cylinder 30 to achieve a limiting effect.

[0048] The side of the threaded block 31 facing away from the piston block 32 is fixedly connected with an adjusting rod 34, and the end of the adjusting rod 34 away from the threaded block 31 is rotatably connected with a hook 33. The hook 33 can be used to hang the materials carried by the user, thereby increasing the use function of the foldable electric tricycle frame.

Claims

1. A foldable electric tricycle frame, comprising a front bracket (1), characterized in that: A front wheel (4) is mounted on the bottom end of the front bracket (1); a protrusion (2) is fixedly connected to the top end of the side wall of the front bracket (1); a rear bracket (3) is rotatably connected to the protrusion (2); an end of the rear bracket (3) away from the protrusion (2) is fixedly connected to a rotating shaft (5); and rear wheels (6) are mounted on both ends of the rotating shaft (5); A swivel seat (7) is fixedly connected to the bottom end of the side wall of the front bracket (1), a support frame (8) is rotatably arranged on the swivel seat (7), and the support frame (8) and the rear bracket (3) are cross-distributed in an X shape, the support frame (8) and the rear bracket (3) are slidably connected, a seat (9) is arranged at one end of the support frame (8) away from the swivel seat (7), a plurality of first limiting holes (10) are provided on the support frame (8), and a plurality of second limiting holes (11) are provided on the rear bracket (3), and the corresponding first limiting holes (10) and the second limiting holes (11) are matched with each other through a first latch (12); An inner cavity (25) is provided inside the seat (9), and an air bag (29) is provided inside the inner cavity (25). When the air bag (29) expands, the elasticity of the seat (9) decreases, and when the air bag (29) contracts, the elasticity of the seat (9) increases.

2. A foldable electric tricycle frame according to claim 1, characterized in that: A rotating groove (13) is provided at one end of the support frame (8) away from the rotating seat (7), a rotating block (14) is rotatably connected inside the rotating groove (13), a through groove is penetrated through the rotating block (14), a threaded barrel (15) is rotatably connected inside the through groove, a threaded rod (16) is threadedly connected inside the threaded barrel (15), and the threaded rod (16) penetrates the upper surface of the threaded barrel (15), and the seat (9) is fixedly connected to the top end of the threaded barrel (15).

3. A foldable electric tricycle frame according to claim 2, characterized in that: A limiting groove (17) is provided on the upper surface of the rotating block (14), a limiting rod (18) is slidably arranged inside the limiting groove (17), and the limiting rod (18) is fixedly connected to the bottom of the seat (9).

4. A foldable electric tricycle frame according to claim 2, characterized in that: An adjusting block (19) is fixedly connected to the bottom of the threaded barrel (15).

5. A foldable electric tricycle frame according to claim 4, characterized in that: An arc plate (20) is arranged inside the rotating groove (13), a clamping groove (21) is provided on the arc plate (20), the clamping groove (21) cooperates with the adjusting block (19), a plurality of third limiting holes (22) are provided on the arc plate (20), a fourth limiting hole (23) is provided on the supporting frame (8), and the fourth limiting hole (23) is communicated with the rotating groove (13), and the fourth limiting hole (23) cooperates with the corresponding third limiting hole (22) via a second latch (24).

6. A foldable electric tricycle frame according to claim 1, characterized in that: A shock absorbing assembly is arranged inside the inner cavity (25), and the shock absorbing assembly comprises a first plate (26), a second plate (27) and a spring (28), wherein the first plate (26) is fixedly connected to the top of the inner cavity (25), the second plate (27) is fixedly connected to the bottom of the inner cavity (25), the top end of the airbag (29) is fixedly connected to the first plate (26), the bottom end of the airbag (29) is fixedly connected to the second plate (27), one end of the spring (28) is fixedly connected to the first plate (26), and the other end of the spring (28) is fixedly connected to the second plate (27).

7. A foldable electric tricycle frame according to claim 6, characterized in that: The spring (28) is provided in plurality.

8. A foldable electric tricycle frame according to claim 7, characterized in that: A circular groove is formed at one end of the seat (9) away from the front bracket (1), an air cylinder (30) is fixedly connected to the inside of the circular groove, the air cylinder (30) is in communication with the air bag (29), and a piston block (32) is slidably disposed inside the air cylinder (30).

9. A foldable electric tricycle frame according to claim 8, characterized in that: The inner thread of the air cylinder (30) is connected to a threaded block (31), the threaded block (31) is located on a side of the piston block (32) facing away from the air bag (29), and the threaded block (31) is rotatably connected to the piston block (32).

10. A foldable electric tricycle frame according to claim 9, characterized in that: An adjusting rod (34) is fixedly connected to a surface of the threaded block (31) facing away from the piston block (32), and an end of the adjusting rod (34) away from the threaded block (31) is rotatably connected to a hook (33).

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