Wheel steering structure

Abstract

The utility model discloses a wheel steering structure which comprises a bottom pipe, a connecting piece, a rotating shaft, a transmission piece and a driving piece. Two connecting pieces are fixedly arranged at the two ends of the bottom pipe respectively, rotating shafts are arranged on the two connecting pieces respectively, the two rotating shafts are provided with mounting seats rotating in the axis direction of the rotating shafts respectively, the mounting seats are used for mounting wheels, the two mounting seats are each provided with two transmission pieces in a protruding mode in the radial direction of the rotating shafts, and the two transmission pieces are hinged to one ends of driving pieces respectively. The middle of the driving piece is hinged to the middle section of the bottom pipe, and a driving part is arranged at the other end of the driving piece and used for controlling a transmission piece at one end of the driving piece to rotate to drive the two wheels to synchronously rotate around the axis of the rotating shaft. The driving part at the other end of the driving piece controls the transmission piece at one end of the driving piece to rotate, then the transmission piece drives the two wheels to synchronously rotate around the axis of the rotating shaft, operation and control are easy, steering of the wheels is more accurate and flexible, and the running stability of a vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel steering, in particular to a wheel steering structure. Background Art

[0002] Currently, universal wheel steering systems are commonly used in the market, especially in small vehicles such as carts and camping carts. However, these designs have their drawbacks. The relatively complex structure of universal wheels leads to high manufacturing and maintenance costs. Furthermore, when the vehicle is traveling on uneven surfaces, the universal wheel's rotation is restricted, affecting the cart's stability. Furthermore, universal wheels have a certain rotational load limit, which makes them less flexible when fully loaded, affecting the user experience. Utility Model Content

[0003] The purpose of the utility model is to provide a wheel steering structure which can flexibly perform steering and improve the driving stability of the wheel.

[0004] To achieve the above-mentioned purpose, the solution of the present invention is: a wheel steering structure, including a bottom tube, a connecting member, a rotating shaft, a transmission member and a driving member; two connecting members are fixedly provided at both ends of the bottom tube, and the two connecting members are respectively provided with a rotating shaft, and the two rotating shafts are respectively provided with a mounting seat that rotates around the axis of the rotating shaft, and the mounting seat is used to mount the wheels, and the two mounting seats are respectively provided with two transmission members protruding along the radial direction of the rotating shaft, and the two transmission members are respectively hinged at one end of the driving member, and the middle part of the driving member is hinged to the middle section of the bottom tube, and the other end of the driving member is provided with a driving part, which is used to control the rotation of the transmission member at one end of the driving member to drive the two wheels to rotate synchronously around the axis of the rotating shaft.

[0005] Preferably, the connecting member is a first U-shaped frame, two of the first U-shaped frames are fixedly arranged at both ends of the bottom tube respectively, the rotating shaft is arranged between the two transverse plates of the first U-shaped frame, and the axis of the rotating shaft is perpendicular to the axis of the bottom tube.

[0006] The preferred embodiment further includes a buffer spring, the mounting seat includes a shaft sleeve, the shaft sleeve and the buffer spring are sleeved on the rotating shaft, and the buffer spring is located between the shaft sleeve and the horizontal plate at the top of the first U-shaped frame.

[0007] Preferably, the mounting seat further includes a mounting shaft, and the two bushings are respectively provided with two mounting shafts protruding radially, the axes of the two mounting shafts are parallel to the axis of the bottom tube, and the bearings of the two wheels are respectively fixedly mounted on the two mounting shafts.

[0008] In a preferred embodiment, the transmission member is an arc-shaped transmission plate, and two arc-shaped transmission plates are symmetrically protruded on the two shaft sleeves facing each other.

[0009] The preferred solution also includes a connecting rod, a first hinge column and a second hinge column. The two first hinge columns are respectively fixedly arranged at one end of the two transmission plates away from the shaft sleeve, and the two second hinge columns are respectively fixedly arranged at one end of the driving member. The connecting rod is connected between the first hinge column and the second hinge column, and the two connecting rods are arranged parallel to the bottom tube.

[0010] The preferred embodiment further includes a second U-shaped frame, which is fixedly arranged in the middle section of the bottom tube. The driving member is a rectangular bogie, the middle part of which is pivotally connected to the second U-shaped frame, two second hinged columns are fixedly provided at one end of the bogie, and a driving part is formed at the other end of the bogie. The driving part drives the bogie to form a pivot plane parallel to the ground.

[0011] Preferably, the driving portion includes a connecting seat, which is pivotally connected to the bogie via a pin shaft, and the connecting seat forms a pivot plane around the bogie and is perpendicular to the ground.

[0012] The preferred solution further includes a torsion spring, which is sleeved on the pin shaft, with one end of the torsion spring resting on the bogie and the other end of the torsion spring resting on the connecting seat.

[0013] Preferably, a sleeve is provided on the connecting seat, and the sleeve is used for installing the pull rod.

[0014] After adopting the above scheme, the beneficial effect of the utility model is that: the two ends of the bottom tube of the utility model are respectively provided with mounting seats for mounting wheels, and two transmission members are protruded on the mounting seats. The two transmission members are respectively hinged at one end of the driving member, and the middle part of the driving member is hinged to the middle section of the bottom tube. The transmission member at one end of the driving member is controlled to rotate by the driving part at the other end of the driving member, and then the transmission member drives the two wheels to rotate synchronously around the axis of the rotating shaft. The operation is simple, the steering of the wheel is more precise and flexible, and the stability of the vehicle driving is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of a partial explosion structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model in which a mounting frame is provided on the bottom pipe;

[0018] Figure 4 It is a schematic diagram of the utility model in which a pull rod is installed on the sleeve of a connecting seat.

[0019] Description of labels:

[0020] 1. Bottom tube; 2. Connecting part; 21. First U-shaped frame; 3. Rotating shaft; 4. Transmission part; 41. Transmission plate; 5. Driving part; 51. Driving part; 511. Connecting seat; 512. Sleeve; 52. Bogie; 53. Torsion spring; 54. Pin; 55. Second U-shaped frame; 6. Mounting seat; 61. Bushing; 62. Mounting shaft; 63. Buffer spring; 7. Connecting rod; 71. First hinge column; 72. Second hinge column; 8. Wheel; 9. Pull rod; 10. Mounting frame. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0022] This embodiment provides a wheel steering structure, such as Figures 1 to 4 As shown, the vehicle comprises a base tube 1, a connector 2, a rotating shaft 3, a transmission member 4, and a drive member 5. Two connectors 2 are fixedly mounted at each end of the base tube 1. Each connector 2 is provided with a rotating shaft 3. Each rotating shaft 3 is provided with a mounting seat 6 that rotates about the axis of the rotating shaft 3. The mounting seats 6 are used to mount wheels 8, facilitating compact connection and installation of the two wheels 8, reducing space requirements and accommodating small vehicles such as camping carts and pushcarts. Two transmission members 4 are projecting radially from the two mounting seats 6 along the rotating shaft 3. These transmission members 4 are hinged to one end of the driver 5, improving transmission efficiency, shortening the transmission path, facilitating rapid response, and enabling more flexible steering. The middle portion of the driver 5 is hinged to the middle section of the base tube 1. A drive unit 51 is provided at the other end of the driver 5, enabling simple operation: steering is achieved by simply pulling the operating unit. The drive unit 51 controls the rotation of the transmission member 4 at one end of the driver 5, driving the two wheels 8 to rotate synchronously about the axis of the rotating shaft 3. This ensures consistent steering of the two wheels 8, avoids driving instability caused by asynchrony, and improves safety.

[0023] like Figure 1 and Figure 2 As shown, the connecting member of this embodiment is a first U-shaped frame 21. Two first U-shaped frames 21 are fixedly mounted at each end of the bottom tube 1. The open end between the cross plates of the two first U-shaped frames 21 faces the wheel 8. After the wheel 8 is installed, it is more stable when subjected to vertical and horizontal forces, ensuring the stability of the vehicle during driving. The rotating shaft 3 is disposed between the two cross plates of the first U-shaped frame 21. The axis of the rotating shaft 3 is perpendicular to the axis of the bottom tube 1. This ensures that the wheel 8 is perpendicular to the ground after installation and can steer around the axis of the rotating shaft 3, ensuring stability and more flexible steering.

[0024] like Figure 2As shown, this embodiment further includes a buffer spring 63. The mounting base 6 includes a sleeve 61. The sleeve 61 and the buffer spring 63 are sleeved on the rotating shaft 3. The buffer spring 63 is located between the sleeve 61 and the horizontal plate at the top of the first U-shaped frame 21. The provision of the buffer spring 63 not only protects the rotating shaft 3 and the sleeve 61 from wear caused by vibration, thereby increasing their service life, but also provides additional support stability for the sleeve 61 and the rotating shaft 3, making the vehicle more stable and reliable during driving.

[0025] like Figure 2 As shown, the mounting base 6 of this embodiment also includes mounting shafts 62. Two mounting shafts 62 are radially protruded from the two bushings 61. The axes of the two mounting shafts 62 are parallel to the axis of the base tube 1. The bearings of the two wheels 8 are fixedly mounted on the two mounting shafts 62. The mounting shafts 62 provide stable support points for the wheels 8, allowing them to be securely mounted on the mounting base 6 and prevent them from shaking or falling off. The axes of the mounting shafts 62 are parallel to the axis of the base tube 1, which facilitates the synchronous steering of the wheels 8.

[0026] like Figure 1 As shown, the transmission member 4 of this embodiment is an arc-shaped transmission plate 41. The two arc-shaped transmission plates 41 are symmetrically protruded on two shaft sleeves 61 facing each other and extending toward one end of the driving member 5. The driving part 51 of the driving member 5 controls the two transmission plates 41 to rotate when the driving member 5 rotates. Since the transmission plates 41 are protruded on the two shaft sleeves 61, the transmission plates 41 will drive the shaft sleeves 61 to rotate, and then the two wheels 8 installed on the shaft sleeves 61 will rotate synchronously. The arc-shaped transmission plates 41 make power transmission smoother.

[0027] like Figure 1 and Figure 2 As shown, this embodiment also includes a connecting rod 7, a first hinge column 71 and a second hinge column 72. The two first hinge columns 71 are respectively fixedly arranged at one end of the two transmission plates 41 away from the shaft sleeve 61, and the two second hinge columns 72 are respectively fixedly arranged at one end of the driving member 5. The connecting rod 7 is connected between the first hinge column 71 and the second hinge column 72. By arranging the connecting rod 7 between one end of the driving member 5 and the transmission plate 41, while meeting the power transmission, the length of the arc-shaped transmission plate 41 can be further reduced, saving manufacturing materials and reducing production costs. The two connecting rods 7 are arranged parallel to the bottom tube 1, so that a quadrilateral structure is formed between the connecting rod 7, the transmission plate 41 and the bottom tube 1, which is not only conducive to synchronous steering, but also can enhance the stability of the overall structure.

[0028] like Figure 2As shown, this embodiment also includes a second U-shaped frame 55, which is fixedly mounted in the middle section of the bottom tube 1. The driving member 5 is a rectangular bogie 52, the middle portion of which is pivotally connected to the second U-shaped frame 55. The second U-shaped frame 55 is fixedly mounted in the middle section of the bottom tube 1, providing a stable support point for the bogie 52, ensuring the overall structural stability of the bogie 52 during pivoting and preventing direct wear between the bogie 52 and the bottom tube 1 that could affect its use. Two second hinged columns 72 are fixedly mounted at one end of the bogie 52. The second hinged columns 72 are connected to the connecting rod 7, allowing the power of the bogie 52 to be smoothly transmitted to the transmission plate 41. The other end of the bogie 52 forms a driving unit 51. The driving unit 51 drives the bogie 52 to pivot in a plane parallel to the ground, thereby reducing losses when the power of the bogie 52 is transmitted to the transmission plate 41 via the connecting rod 7.

[0029] like Figure 1 and Figure 2 As shown, the driving unit 51 includes a connecting seat 511, which is pivotally connected to the bogie 52 via a pin 54. The connecting seat 511 forms a pivot plane perpendicular to the ground around the bogie 52. In this embodiment, the connecting seat 511 of the driving unit 51 is pivotally connected to the bogie 52 via the pin 54, allowing the connecting seat 511 to rotate around the driving member 5 and form an inclined angle with the driving member 5. After the user installs auxiliary equipment such as a pull rod and handle on the connecting seat 511, more flexible steering control can be achieved.

[0030] like Figure 2 As shown, this embodiment also includes a torsion spring 53, which is sleeved on the pin shaft 54. One end of the torsion spring 53 abuts against the bogie 52, and the other end of the torsion spring 53 abuts against the connecting seat 511. When the connecting seat 511 is subjected to an external force and rotates around the pin shaft 54, the torsion spring 53 twists and stores energy. Once the external force disappears, the torsion spring 53 releases energy and pushes the connecting seat 511 to reset. The structure is simple and can ensure the normal operation of the connecting seat 511 and the driving member 5.

[0031] like Figure 1 and Figure 2 As shown, the connecting base 511 of this embodiment is provided with a sleeve 512, which is used to install a pull rod. The pull rod can drive the connecting base 511 to rotate around the pin 54 of the driving member 5, so that the entire pull rod and the driving member 5 are at an inclined angle, which makes it more convenient for the user to control the driving member 5 using the pull rod, and the design is more user-friendly. Of course, the sleeve 512 on the connecting base 511 can also be set as other structures that can be fixedly connected to auxiliary equipment such as the pull rod 9 and the handle, such as a clip-on structure.

[0032] The use process of this utility model is as follows:

[0033] The user first sets the mounting frame 10 on the bottom pipe 1, such as Figure 3 As shown, the wheel 8 steering structure of the present invention is fixedly installed on camping vehicles, carts and other small vehicles suitable for manual pushing and pulling through the mounting frame 10.

[0034] Then, other auxiliary steering control devices such as the pull rod are installed on the sleeve 512 of the connecting seat 511 at the other end of the bogie 52. Figure 4 As shown, taking the pull rod 9 as an example, in the initial state, the pull rod 9 on the connecting seat 511 and the bogie 52 are perpendicular to each other. Since the connecting seat 511 is pivotally connected to the bogie 52 through the pin shaft 54, the user can drag the pull rod 9 to make the pull rod 9 and the bogie 52 form an inclined angle, which is convenient for towing the vehicle.

[0035] When steering is required, the user bends the pull rod 9 to the left or right. Since the bogie 52 is pivoted to the bottom tube 1 through the second U-shaped frame 55, one end of the bogie 52 will rotate accordingly to the right or left. Since the two curved plates are hinged to one end of the bogie 52 through the connecting rod 7, the power of the pull rod 9 at one end of the bogie 52 is transmitted to the curved plate through the two connecting rods 7. Since the curved plate is protruding on the shaft sleeve 61, the two curved plates will respectively drive the wheels 8 on the two shaft sleeves 61 to steer to the right or left synchronously.

[0036] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A wheel steering structure, characterized in that: It includes a bottom pipe, a connecting piece, a rotating shaft, a transmission piece and a driving piece; Two connecting parts are fixedly provided at both ends of the bottom tube, and a rotating shaft is provided on the two connecting parts respectively. The two rotating shafts are respectively provided with a mounting seat that rotates around the axis of the rotating shaft, and the mounting seat is used to install wheels. The two mounting seats are respectively provided with two transmission parts protruding along the radial direction of the rotating shaft. The two transmission parts are respectively hinged at one end of the driving part, and the middle part of the driving part is hinged to the middle section of the bottom tube. A driving part is provided at the other end of the driving part, and the driving part is used to control the rotation of the transmission part at one end of the driving part to drive the two wheels to rotate synchronously around the axis of the rotating shaft.

2. A wheel steering structure according to claim 1, characterized in that: The connecting member is a first U-shaped frame, and two first U-shaped frames are fixedly arranged at both ends of the bottom tube respectively. The rotating shaft is arranged between the two horizontal plates of the first U-shaped frame, and the axis of the rotating shaft is perpendicular to the axis of the bottom tube.

3. A wheel steering structure according to claim 2, characterized in that: It also includes a buffer spring. The mounting seat includes a shaft sleeve. The shaft sleeve and the buffer spring are sleeved on the rotating shaft. The buffer spring is located between the shaft sleeve and the horizontal plate on the top of the first U-shaped frame.

4. A wheel steering structure according to claim 3, characterized in that: The mounting seat also includes a mounting shaft. Two mounting shafts are protruded radially from the two sleeves. The axes of the two mounting shafts are parallel to the axis of the bottom tube. The bearings of the two wheels are fixedly mounted on the two mounting shafts.

5. The wheel steering structure according to claim 3, characterized in that: The transmission member is an arc-shaped transmission plate, and two arc-shaped transmission plates are symmetrically protruded on the two shaft sleeves facing each other.

6. A wheel steering structure according to claim 5, characterized in that: It also includes a connecting rod, a first hinge column and a second hinge column. The two first hinge columns are respectively fixedly arranged at one end of the two transmission plates away from the shaft sleeve, and the two second hinge columns are respectively fixedly arranged at one end of the driving member. The connecting rod is connected between the first hinge column and the second hinge column, and the two connecting rods are arranged parallel to the bottom tube.

7. A wheel steering structure according to claim 6, characterized in that: It also includes a second U-shaped frame, which is fixedly arranged in the middle section of the bottom tube. The driving member is a rectangular bogie, the middle part of which is pivotally connected to the second U-shaped frame, two second hinged columns are fixedly provided at one end of the bogie, and a driving part is formed at the other end of the bogie. The driving part drives the bogie to form a pivot plane parallel to the ground.

8. The wheel steering structure according to claim 7, characterized in that: The driving part includes a connecting seat, which is pivotally connected to the bogie through a pin shaft. The connecting seat forms a pivot plane around the bogie and is perpendicular to the ground.

9. A wheel steering structure according to claim 8, characterized in that: It also includes a torsion spring, which is sleeved on the pin shaft, one end of the torsion spring abuts against the bogie, and the other end of the torsion spring abuts against the connecting seat.

10. The wheel steering structure according to claim 8, characterized in that: The connecting seat is provided with a sleeve, and the sleeve is used for installing the pull rod.

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