Convenient electric control wheelchair driver structure

Abstract

The utility model discloses a portable electric control wheelchair driver structure which comprises a driver box body, a containing cavity is formed in the upper portion of the driver box body, a fixing assembly is arranged in the containing cavity, the fixing assembly comprises a long rod, the long rod is vertically and fixedly arranged in the containing cavity, two installation plates are arranged on the long rod in a sliding mode, and the two installation plates are arranged on the long rod in a sliding mode. Second shaft rods are symmetrically and fixedly arranged in the mounting plate, two bending plates which are symmetrically arranged are rotationally arranged on the second shaft rods, a limiting wheel is fixedly arranged between the two bending plates, a second short plate is hinged to one end of each bending plate, a first short plate is hinged to the other end of each second short plate, and bottom plates are symmetrically and fixedly arranged in the containing cavity. The first short plates are fixedly connected with the corresponding bottom plates, a driving assembly for driving the two mounting plates to move is arranged in the containing cavity, and a power assembly for driving the driving box body to move is arranged below the driver box body. Due to the fact that the four limiting wheels evenly apply force to the periphery of the wheelchair connecting rod, the wheelchair connecting rod can be fixed more firmly.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair drivers, in particular to a portable electric control wheelchair driver structure. Background Art

[0002] Electric wheelchairs are modified and upgraded from traditional manual wheelchairs by adding high-performance power drive devices, intelligent control devices, batteries and other components.

[0003] A Chinese patent document with publication number CN220513023U discloses an intelligent rear drive device for a wheelchair, including a rear drive body and a first horizontal plate, the first horizontal plate being fixedly connected to the lower part of the rear drive body, the front end surface of the rear drive body being threadedly connected to an end cover through a plurality of bolts, a wheelchair connecting rod being installed inside the end cover, and the outer wall of the wheelchair connecting rod being respectively matched with the inner wall gap of the circular hole of the rear drive body and the end cover, and a connecting device and a driving device being respectively installed at the upper and lower parts of the rear drive body. The bidirectional screw rod and the vertical rod can drive the two third horizontal plates to move toward each other, so that the third horizontal plate can drive the rotating wheel to move through the inclined plate and the concave plate, so that the wheelchair connecting rod can be pressed and fixed through the rotating wheel.

[0004] The disadvantage of the above disclosed solution is that since the distance between the two rotating wheels on the same third horizontal plate remains unchanged, when fixing the wheelchair connecting rod with a larger diameter, the four rotating wheels are not fixed firmly enough to the wheelchair connecting rod. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a convenient electric control wheelchair drive structure. When fixing a wheelchair connecting rod with a larger diameter, the four limiting wheels are fixed to the wheelchair connecting rod more firmly, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable electric control wheelchair drive structure, comprising a drive box, a accommodating chamber is provided on the top of the drive box, a connecting hole allowing the wheelchair connecting rod to pass through is provided on one side of the accommodating chamber, a fixing component for fixing the wheelchair connecting rod is arranged in the accommodating chamber, the fixing component comprises a long rod, the long rod is vertically fixedly arranged in the accommodating chamber, two symmetrically arranged mounting plates are slidably arranged on the long rod, a through groove is provided on the mounting plate, a second shaft rod is symmetrically fixedly arranged in the through groove, two symmetrically arranged bending plates are rotatably arranged on the second shaft rod, a limiting wheel is fixedly arranged between the two bending plates, a second short plate is hingedly arranged at one end of the bending plate away from the limiting wheel, and a first short plate is hingedly arranged at the other end of the second short plate, a bottom plate is symmetrically fixedly arranged one above and one below in the accommodating chamber, the first short plate is fixedly connected to the corresponding bottom plate, a driving component that drives the two mounting plates to move vertically is arranged in the accommodating chamber, and a power component that drives the driving box to move is arranged below the drive box.

[0007] Furthermore, the driving assembly includes a first motor, which is fixedly arranged in the accommodating cavity. A bidirectional screw is fixedly arranged at the output end of the first motor. The bidirectional screw passes through two mounting plates in sequence, and the threads on both sides of the bidirectional screw have opposite rotation directions. The threads on both sides of the bidirectional screw are respectively connected to the corresponding mounting plate threads.

[0008] Furthermore, the power assembly includes a second motor, which is fixedly arranged below the drive housing. A first shaft is rotatably arranged below the drive housing, wheels are symmetrically fixedly arranged on the first shaft, and a transmission member is arranged between the first shaft and the second motor.

[0009] Furthermore, the transmission member includes a first pulley and a second pulley, the first pulley is fixedly sleeved on the output shaft of the second motor, the second pulley is fixedly sleeved on the first shaft, and the second pulley and the first pulley are sleeved with the same belt.

[0010] Furthermore, the limiting wheel is wrapped with an anti-skid pad.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] A second short plate is hingedly provided at one end of the bending plate away from the limiting wheel, and a first short plate is hingedly provided at the other end of the second short plate. A bottom plate is symmetrically fixedly provided in the accommodating cavity, and the first short plate is fixedly connected to the corresponding bottom plate. When a wheelchair connecting rod with a larger diameter is needed to connect the wheelchair drive structure, the wheelchair connecting rod is passed through the connecting hole into the accommodating cavity, and the limiting wheel is moved closer to the wheelchair connecting rod in the vertical direction through the driving assembly. At the same time, when the mounting plate moves vertically along the bidirectional screw, the mounting plate drives the bending plate to move downward. When the distance between the mounting plate and the bottom plate gradually increases, the first short plate pulls the bending plate to rotate around the second shaft through the second short plate, and the bending plate drives the corresponding limiting wheel to move closer to the wheelchair connecting rod, so that the four limiting wheels are respectively closer to the wheelchair connecting rod, and the wheelchair connecting rod is tightly fixed by the four limiting wheels. When fixing the wheelchair connecting rod with a larger diameter, the four limiting wheels evenly apply force to the outer periphery of the wheelchair connecting rod, so that the wheelchair connecting rod is fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0015] Figure 3 It is a cross-sectional view of the mounting plate of the structure of the utility model;

[0016] Figure 4 It is an enlarged view of point A of the structure of the present utility model.

[0017] In the figure: 1. drive housing; 2. connecting hole; 3. first pulley; 4. second motor; 5. belt; 6. wheel; 7. first shaft; 8. support rod; 9. bottom plate; 10. limit wheel; 11. long rod; 12. mounting plate; 13. first motor; 14. bidirectional screw; 15. first short plate; 16. bending plate; 17. second shaft; 18. second short plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4The utility model provides a technical solution: a portable electric control wheelchair drive structure, including a drive housing 1, a receiving cavity is provided above the drive housing 1, and a power assembly for driving the drive housing to move is installed below the drive housing 1. The power assembly includes a second motor 4, which is fixedly installed on the inner wall below the drive housing 1, and a first shaft rod 7 is rotatably installed below the drive housing, and the first shaft rod 7 is arranged horizontally. Wheels 6 are symmetrically fixedly installed on the first shaft rod 7, and a transmission member is installed between the first shaft rod 7 and the second motor 4.

[0020] The transmission member includes a first pulley 3 and a second pulley. The first pulley 3 is fixedly mounted on the output shaft of the second motor 4. The second pulley is fixedly mounted on the first shaft 7. The second pulley is located between the two wheels 6. The second pulley and the first pulley 3 are sleeved with the same belt 5.

[0021] A connecting hole 2 is provided on one side of the accommodating chamber to allow the wheelchair connecting rod to pass through. A fixing assembly for fixing the wheelchair connecting rod is installed in the accommodating chamber, and the fixing assembly includes a long rod 11, and the long rod 11 is vertically fixedly installed in the accommodating chamber. Two symmetrically arranged mounting plates 12 are slidably installed on the long rod 11, and a through groove is provided in the middle of the mounting plate 12, and a second shaft rod 17 is symmetrically fixedly installed in the through groove, and two symmetrically arranged bending plates 16 are rotatably installed on the second shaft rod 17, and the middle position of the two bending plates 16 is sleeved on the corresponding second shaft rod 17 and is rotatably installed with the second shaft rod 17. A limiting wheel 10 is fixedly installed between the two bending plates 16, so that the four limiting wheels 10 constitute a clamping space for clamping the wheelchair connecting rod. The limiting wheel 10 is wrapped with an anti-slip pad to increase the friction between the limiting wheel 10 and the wheelchair connecting rod. The bending plate 16 is symmetrically hingedly mounted with two second short plates 18 at one end away from the limiting wheel 10, and the first short plate 15 is hingedly mounted between the other ends of the two second short plates 18. Bottom plates 9 are symmetrically mounted one above and one below in the accommodating cavity, and the bottom plates 9 are fixedly connected to the inner wall of the accommodating cavity through the support rod 8. The first short plate 15 is fixedly connected to the corresponding bottom plate 9.

[0022] A driving assembly for driving the two mounting plates 12 to move vertically is installed in the accommodating chamber, and the driving assembly includes a first motor 13, which is fixedly installed on the bottom wall of the accommodating chamber, and a bidirectional screw 14 is fixedly installed on the output end of the first motor 13, and the top end of the bidirectional screw 14 is rotatably connected to the top wall of the accommodating chamber, and the bidirectional screw 14 is symmetrically arranged with the long rod 11. The bidirectional screw 14 passes through the two mounting plates 12 in sequence, and the threads on the upper and lower sides of the bidirectional screw 14 are rotated in opposite directions, and the threads on both sides of the bidirectional screw 14 are respectively threadedly connected to the corresponding mounting plates 12.

[0023] The working principle of the portable electric control wheelchair driver structure provided by the utility model is as follows:

[0024] When a wheelchair connecting rod with a larger diameter is needed to connect the wheelchair drive structure, the wheelchair connecting rod is passed through the connecting hole 2 into the accommodating cavity, and the first motor 13 is started. The rotation of the first motor 13 drives the bidirectional screw 14 to rotate, and the bidirectional screw 14 drives the upper and lower mounting plates 12 to move toward each other, so that the limiting wheel 10 continuously approaches the wheelchair connecting rod in the vertical direction.

[0025] At the same time, when the mounting plate 12 moves vertically along the bidirectional screw 14, the mounting plate 12 drives the bending plate 16 to move downward. Since the bottom plate 9 remains stationary, when the distance between the mounting plate 12 and the bottom plate 9 gradually increases, the first short plate 15 pulls the bending plate 16 to rotate around the second shaft 17 through the second short plate 18, and the bending plate 16 drives the corresponding limiting wheel 10 to move closer to the wheelchair connecting rod, so that the four limiting wheels 10 move closer to the wheelchair connecting rod respectively, and the wheelchair connecting rod is pressed and fixed by the four limiting wheels 10. Then the wheelchair connecting rod can be connected to the wheelchair.

[0026] Then start the second motor 4, the second motor 4 drives the first pulley 3 to rotate, the first pulley 3 drives the second pulley to rotate through the belt 5, the rotation of the second pulley drives the first shaft rod 7 to rotate, the rotation of the first shaft rod 7 drives the wheel 6 to rotate, and the wheel 6 can be driven.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable electric controlled wheelchair drive structure, comprising a drive housing (1), characterized in that: A receiving chamber is provided above the drive housing (1), a connecting hole (2) is provided on one side of the receiving chamber for allowing a wheelchair connecting rod to pass through, a fixing assembly for fixing the wheelchair connecting rod is provided in the receiving chamber, the fixing assembly comprises a long rod (11), the long rod (11) is vertically fixedly provided in the receiving chamber, two symmetrically arranged mounting plates (12) are slidably provided on the long rod (11), a through groove is provided on the mounting plate (12), a second shaft rod (17) is symmetrically fixedly provided in the through groove, and two symmetrically arranged bending plates (12) are rotatably provided on the second shaft rod (17) 16), a limiting wheel (10) is fixedly arranged between the two bending plates (16), a second short plate (18) is hingedly arranged at one end of the bending plate (16) away from the limiting wheel (10), and a first short plate (15) is hingedly arranged at the other end of the second short plate (18), bottom plates (9) are symmetrically fixedly arranged one above and one below in the accommodating cavity, the first short plate (15) is fixedly connected to the corresponding bottom plate (9), a driving component for driving the two mounting plates (12) to move vertically is arranged in the accommodating cavity, and a power component for driving the drive housing (1) to move is arranged below the drive housing (1).

2. The portable electric controlled wheelchair drive structure according to claim 1, characterized in that: The driving assembly comprises a first motor (13), the first motor (13) is fixedly arranged in the accommodating cavity, a bidirectional screw (14) is fixedly arranged at the output end of the first motor (13), the bidirectional screw (14) passes through the two mounting plates (12) in sequence, and the threads on both sides of the bidirectional screw (14) have opposite rotation directions, and the threads on both sides of the bidirectional screw (14) are respectively threadedly connected to the corresponding mounting plates (12).

3. The portable electric controlled wheelchair drive structure according to claim 1, characterized in that: The power assembly comprises a second motor (4), the second motor (4) is fixedly arranged below the drive housing, a first shaft (7) is rotatably arranged below the drive housing (1), wheels (6) are symmetrically fixedly arranged on the first shaft (7), and a transmission member is arranged between the first shaft (7) and the second motor (4).

4. The portable electric controlled wheelchair drive structure according to claim 3, characterized in that: The transmission member comprises a first pulley (3) and a second pulley, wherein the first pulley (3) is fixedly sleeved on the output shaft of the second motor (4), and the second pulley is fixedly sleeved on the first shaft (7), and the second pulley and the first pulley (3) are sleeved with the same belt (5).

5. The portable electric controlled wheelchair drive structure according to claim 1, characterized in that: The limiting wheel (10) is wrapped with an anti-skid pad.

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