Seat tube assembly and vehicle

Abstract

The present application relates to a seat tube assembly, including a seat tube, a fixed member and a sliding mechanism, wherein the seat tube is configured to be inserted into a middle tube; the fixed member is disposed in the middle tube; the sliding mechanism includes a plurality of sliding bodies, wherein the sliding bodies are slidably connected to the fixed member along the axis direction of the middle tube, and contact the seat tube inserted in the middle tube to form a high pair. The above-mentioned seat tube assembly, on the one hand, can reduce friction by means of high-pair contact and sliding movement, improve the smoothness and stability of seat height adjustment, realize a simple and efficient adjustment method, and improve user experience. On the other hand, the sliding body is slidably connected to the fixed member along the axis direction of the middle tube, and can convert the relative motion between the seat tube and the middle tube into a linear relative motion, further improving the smoothness and stability of seat height adjustment. A vehicle is also provided.

Description

Technical Field

[0001] The present application relates to the technical field of shared vehicles, and in particular to a seat tube assembly and a vehicle. Background Art

[0002] With the rapid development of Internet technology and smart mobile terminals, shared vehicle services have developed into a convenient and efficient travel service. When consumers choose a mode of transportation for short-distance trips, they often choose shared vehicles as a means of transportation, such as shared bicycles.

[0003] Since shared vehicles are self-service rental vehicles, users need to complete vehicle debugging by themselves before using them. However, existing shared vehicles have problems with seat height adjustment, which reduces the user experience of shared vehicles. Summary of the invention

[0004] Based on this, it is necessary to provide a seat tube assembly and a vehicle, which can achieve smooth and stable adjustment of the seat height.

[0005] According to one aspect of the present application, a seat tube assembly is provided, comprising:

[0006] A seat tube configured to be inserted into the mid-tube;

[0007] A fixing member is disposed in the middle tube; and

[0008] The sliding mechanism comprises a plurality of sliding bodies, wherein the sliding bodies are slidably connected to the fixing member along the axis direction of the middle tube and contact the seat tube inserted in the middle tube to form a high pair.

[0009] In the seat tube assembly described above, the seat tube and the sliding body are in high-pair contact, and the sliding body can slide along the axis of the middle tube. On the one hand, the friction can be reduced by means of high-pair contact and sliding movement, and the smoothness and stability of seat height adjustment can be improved, thereby realizing a simple and efficient adjustment method and improving user experience. On the other hand, the sliding body is connected to the fixed component by sliding along the axis of the middle tube, and the relative movement between the seat tube and the middle tube can be converted into linear relative movement, further improving the smoothness and stability of seat height adjustment. On the other hand, the contact between the seat tube and the fixed component to form a high pair also reduces the damage rate of the seat tube assembly to a certain extent, and reduces the cost of maintenance and operation.

[0010] In one embodiment, the plurality of sliding bodies are symmetrically arranged with respect to the central axis of the middle tube.

[0011] In one embodiment, the sliding body comprises:

[0012] Supports; and

[0013] A rolling unit provided on the support member;

[0014] The support member is slidably connected to the fixed member and is provided with a receiving portion; the rolling unit is received in the receiving portion and is used to contact with the seat tube to form a high pair.

[0015] In one embodiment, the rolling unit includes a plurality of balls, the accommodating portion includes a plurality of first accommodating grooves, the balls are accommodated in the first accommodating grooves, and are in point contact with the seat tube.

[0016] In one embodiment, a center line connecting the plurality of balls in each of the rolling units is parallel to an axis of the middle tube.

[0017] In one embodiment, a guide groove cooperating with the ball is formed on the outer side of the seat tube to guide the seat tube.

[0018] In one embodiment, the rolling unit includes at least one roller, the accommodating portion includes a plurality of second accommodating grooves, the roller is accommodated in the second accommodating grooves, and is in line contact with the seat tube.

[0019] In one embodiment, the fixing component is provided with a sliding groove adapted to the sliding body, and the sliding body is slidably arranged in the sliding groove.

[0020] In one embodiment, the seat tube assembly further includes a stopper, which is connected to the fixing member and is located at one end of the slide groove for limiting the position of the sliding body.

[0021] In one embodiment, the seat tube assembly further includes a locking assembly;

[0022] The locking assembly is arranged on the middle tube and is used for fixing the seat tube to the middle tube.

[0023] In one embodiment, the seat tube assembly further includes a stopper;

[0024] The limiting member passes through the locking assembly, the middle tube and the fixing member, and abuts against the seat tube to prevent the seat tube from rotating.

[0025] According to another aspect of the present application, a vehicle is provided, comprising a seat tube assembly as described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a seat tube assembly in the prior art;

[0027] Figure 2 is a structural schematic diagram of a seat tube assembly in one embodiment of the present invention;

[0028] Figure 3 for Figure 2 An exploded structural diagram of the seat tube assembly shown;

[0029] Figure 4 for Figure 2 A schematic diagram of a cross-sectional structure of a seat tube assembly from one perspective is shown;

[0030] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure of the seat tube assembly from another perspective is shown. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] The seat adjustment in the related art is not smooth, which affects the user experience. Figure 1 The bicycle seat locking device shown in the figure has a bicycle seat tube 1 inserted in the middle tube, which can slide up and down along the inner wall of the middle tube to adjust the up and down position of the bicycle seat. The lower end of the bicycle seat tube 1 is sleeved with a wedge-shaped sleeve 3, which can slide up and down along the inner wall of the vertical tube. When the position of the bicycle seat needs to be adjusted, the wrench 6 is turned counterclockwise, and the wedge-shaped sleeve 3 moves down along the inner hole of the vertical tube under the push of the pull rod 7 to release the lock. When the seat height is determined, the wrench 6 is turned clockwise to lock the bicycle seat tube relative to the inner wall of the middle tube with the help of the wedge-shaped sleeve 3. The seat tube assembly can realize the up and down height adjustment of the bicycle seat, but the smoothness of adjustment will be affected by many aspects such as part accuracy, part assembly error, water corrosion, mechanical wear, etc., and the smoothness of adjustment is not good.

[0038] In order to solve this technical problem, the prior art also provides a hydraulic adjustment method, that is, by compressing the hydraulic fluid to generate bias pressure to make the seat tube of the bicycle and the middle tube of the vehicle move relative to each other, so as to achieve the up and down height adjustment of the bicycle seat. This structure has high adjustment accuracy and good feedback effect, but since hydraulic adjustment is highly sensitive to low temperature weather, it is easy for the hydraulic system to fail in low temperature environment, affecting the adjustment effect. In addition, the design of the hydraulic system is relatively complex, resulting in increased instability of parts, and the maintenance rate and maintenance cost continue to rise.

[0039] Based on this, the embodiments of the present application provide a seat tube assembly and a vehicle, which can better improve the above-mentioned problems.

[0040] The present application provides a seat tube assembly, which can facilitate users to quickly, stably and smoothly adjust the position of the vehicle seat, and vehicle operation and maintenance personnel can also easily adjust the vehicle seat to a uniform position to facilitate transportation and maintenance of the vehicle.

[0041] Figure 2 A structural schematic diagram of a seat tube assembly in an embodiment of the present application is shown; Figure 3 Shows Figure 2 An exploded structural diagram of the seat tube assembly shown; Figure 3 for Figure 2 An exploded structural diagram of the seat tube assembly shown; Figure 4 Shows Figure 2 A schematic diagram of a cross-sectional structure of a seat tube assembly from one perspective is shown; Figure 5 Shows Figure 2 A schematic diagram of the cross-sectional structure of the seat tube assembly from another perspective is shown.

[0042] See also Figure 2 and Figure 3 As shown, the seat tube assembly in one embodiment of the present application includes a seat tube 10, a locking assembly 30, a fixing member 40 and a sliding mechanism. The seat tube 10 is used to carry the seat of the vehicle in actual application, and is configured to be inserted into the middle tube 20 of the vehicle to connect the seat tube assembly to the frame. The locking assembly 30 is provided on the middle tube 20 to fix the seat tube 10 to the middle tube 20. The fixing member 40 is an intermediate member provided between the middle tube 20 and the seat tube 10, and is used to provide a supporting carrier for sliding movement for the sliding mechanism. Preferably, the fixing member 40 can be detachably provided in the middle tube 20, which is convenient for processing and manufacturing on the one hand, and is conducive to reducing production costs, and is also convenient for operation and maintenance personnel to disassemble and maintain on the other hand.

[0043] The sliding mechanism includes a plurality of sliding bodies 50, which are connected to the fixed member 40 by sliding along the axis direction of the middle tube 20, and contact the seat tube 10 inserted in the middle tube 20 to form a high pair. It should be noted that the two components may form a motion constraint through point contact, line contact or surface contact. The combination of the point, line and surface contact between the two components is called a secondary element. If the secondary element is a point or a line, the motion pair is a high pair. It is easy to understand that the use conditions of shared vehicles are poor. For example, shared bicycles are in an open-air environment for a long time, and the harsh environment has a relatively serious impact on the loss of the vehicle. Among them, the seat tube 10 and the middle tube 20 of the vehicle are in surface contact. After long-term use, the smoothness and stability of the seat height adjustment will be affected by the accuracy of parts, assembly errors of parts, water corrosion and other aspects, resulting in the adjustment effect and experience failing to meet the user's expected requirements. In addition, the aforementioned seat tube 10 is easily damaged after long-term use, which imposes a heavy burden on maintenance and operation. In the seat tube assembly in the embodiment of the present application, when the height of the seat needs to be adjusted, the seat tube 10 and the sliding body 50 are in high-pair contact, and the sliding body 50 can slide along the axis direction of the middle tube 20. On the one hand, the friction can be reduced by means of high-pair contact and sliding movement, and the smoothness and stability of seat height adjustment can be improved, thereby realizing a simple and efficient adjustment method and improving user experience. On the other hand, the sliding body 50 is slidably connected to the fixed member 40 along the axis direction of the middle tube 20, and the relative motion between the seat tube 10 and the middle tube 20 can be converted into linear relative motion, further improving the smoothness and stability of seat height adjustment. On the other hand, the contact between the seat tube 10 and the fixed member 40 forms a high pair, which also reduces the damage rate of the seat tube assembly to a certain extent and reduces the cost of maintenance and operation.

[0044] As a preferred embodiment, a plurality of sliding bodies 50 are symmetrically arranged with the central axis of the middle tube 20 as a reference. In this way, the seat tube 10 can be evenly stressed, which is conducive to further improving the smoothness and stability of the movement of the seat tube 10. Further, there are a plurality of sliding bodies 50, and the plurality of sliding bodies 50 are symmetrically arranged with the central axis of the fixed component 40 as a reference. Specifically, in some embodiments, the sliding bodies 50 can be 2, 4 or 6. In this way, the smoothness and stability of the adjustment of the seat tube 10 are further guaranteed.

[0045] In some embodiments, the locking assembly 30 may include a clamp 32 and a pull member 34, the pull member 34 is rotatably connected to the clamp 32, the clamp 32 is sleeved on the middle tube 20, and the clamping and positioning of the seat tube assembly is achieved by clamping the middle tube 20. In a specific embodiment, the locking assembly 30 can be configured to clamp the middle tube 20 of the vehicle and the seat tube assembly by rotating the pull member 34. Among them, a cam, an eccentric gasket and other structures can be set between the pull member 34 and the clamp 32, so that the pull member 34 can clamp or loosen the clamp 32 when rotating. As an optional embodiment, an inner liner sleeve can also be inserted into the middle tube 20, the inner liner sleeve is positioned in the middle tube 20 of the vehicle and one end can extend from the middle tube 20 of the vehicle, and the fixing member 40 can be inserted into the inner liner sleeve. The liner sleeve is provided with a notch groove extending from its top end to its bottom end. A plurality of notch grooves can be arranged along the circumference of the liner sleeve so that the liner sleeve has a strong elastic deformation ability and can be tightened under the action of the clamp 32 or expanded when the clamp 32 is released.

[0046] It can be understood that the liner sleeve can be fixedly connected to the middle pipe 20 of the vehicle, or can be connected to the middle pipe 20 of the vehicle in a detachable connection manner, which is not limited here.

[0047] It is also understandable that the locking assembly 30 in the embodiment of the present application may also be in other forms, which are not limited here, as long as it can achieve the function of locking and releasing the seat tube 10 and the middle tube 20.

[0048] See also Figure 4 and Figure 5 As shown, in some embodiments of the present application, the sliding body 50 includes a support member 52 and a rolling unit (not shown in the figure), the support member 52 is slidably connected to the fixed member 40, and a receiving portion is formed, and the rolling unit is received in the receiving portion to contact with the seat tube 10 to form a high pair. Specifically, the rolling unit includes a plurality of balls 54, and the receiving portion includes a plurality of first receiving grooves, and the balls 54 are received in the first receiving grooves and contact with the seat tube 10 to form point contact. In this way, the friction force can be reduced, the smoothness and stability of the adjustment can be improved, a simple and efficient adjustment method can be achieved, and the user experience can be improved. Moreover, the maintenance can be completed by adding lubricating oil to the middle tube 20, which is easy to operate and reduces the cost of maintenance and operation. It is also worth emphasizing that the plurality of balls 54 can give the seat tube 10 a certain resistance, so that when the locking assembly 30 is released, the seat tube 10 will not easily slide to the bottom of the middle tube 20, which brings a good user experience to the user.

[0049] Specifically in the embodiment, the ball 54 is accommodated in the first accommodating groove, and part of the ball 54 protrudes from the first accommodating groove to contact the outer wall of the seat tube 10 to form a point contact. As a preferred embodiment, the outer side of the seat tube 10 is formed with a guide groove 12 adapted to the ball 54 (see Figure 2 Specifically, the portion of the ball 54 protruding from the receiving groove can be embedded in the aforementioned guide groove 12 and contact the inner wall of the guide groove 12, so that when the seat tube 10 moves relative to the middle tube 20, the movement of the seat tube 10 can be more stable and smoother.

[0050] Furthermore, the center line of the plurality of balls 54 in each rolling unit is parallel to the axis of the middle tube 20. In this way, while reducing the friction, the seat tube 10 is further guided, which is beneficial to improve the smoothness and stability of the seat tube 10 in moving relative to the middle tube 20.

[0051] It can be understood that the form of the rolling unit is not limited to this. In some other embodiments, the rolling unit may also include at least one roller, the accommodating portion includes a plurality of second accommodating grooves, the roller is accommodated in the second accommodating grooves, and the outer wall of the roller forms a line contact with the seat tube 10 inserted into the middle tube 20. In this way, compared with the traditional surface contact between the seat tube 10 and the middle tube 20, the smoothness and stability of the movement are also improved.

[0052] It should be noted that in the specific assembly, the rolling unit can be assembled with the support member 52 to form a whole, and then the sliding body 50 formed by the rolling unit and the support member 52 is assembled to the fixed component 40. In this way, the assembly is simple and maintenance is convenient.

[0053] In some embodiments, the fixed member 40 is provided with a slide groove 42 adapted to the sliding body 50, and the sliding body 50 is slidably disposed in the slide groove 42. Specifically in the embodiment, the slide groove 42 extends along the axial direction of the middle tube 20, and the support member 52 is longitudinally slidably disposed in the slide groove 42, so that the rolling unit is arranged along the axial direction of the middle tube 20, further improving the smoothness and stability of the adjustment of the seat tube 10. Among them, the sliding body 50 is adapted to the slide groove 42, which means that the shape and size of the slide groove 42 match the shape and size of the sliding body 50, so that the reliability and stability of the connection between the whole formed by the support member 52 and the rolling unit and the fixed member 40 can be guaranteed.

[0054] Furthermore, the seat tube assembly further includes a stopper 60, which is connected to the fixed member 40 and is located at one end of the slide groove 42, and is used to limit the position of the sliding body 50. Specifically, the support member 52 is in the shape of a slider, and both ends of the stopper 60 are fixedly connected to one end of the fixed member 40 and span the opening at the end of the slide groove 42. When the support member 52 is slidably arranged in the slide groove 42, the stopper 60 supports the support member 52 to prevent the sliding body 50 from sliding off the slide groove 42. Specifically in some embodiments, the stopper 60 is in the shape of a long strip, and both ends of the stopper 60 are respectively welded to the ends of the fixed member 40, so that the sliding body 50 is stably accommodated in the slide groove 42, ensuring the stable use of the seat tube assembly.

[0055] It should be understood that the height adjustment range of the seat tube 10 is determined by the length of the fixing member 40, but it should be considered whether the locking assembly 30 will cause the ball 54 to deform due to force, resulting in poor adjustment. For example, in some embodiments, the number of balls 54 in each rolling unit is 3-4, and the length of the fixing member 40 does not exceed the lower edge of the locking assembly 30.

[0056] In some embodiments, the seat tube assembly further includes a limit member 70, which passes through the locking assembly 30, the middle tube 20 and the fixing member 40, and abuts against the seat tube 10. Specifically in some embodiments, the limit member 70 is a limit bolt, and threaded holes are provided on the clamp 32, the middle tube 20 and the fixing member 40. The limit bolt is threadedly connected to the aforementioned multiple threaded holes and abuts against the seat tube 10. In this way, on the one hand, the locking assembly 30, the middle tube 20 and the fixing member 40 can be connected as a whole and limited in the axial direction, which is beneficial to the stability of the seat height adjustment. On the other hand, the limit member 70 can also apply a holding force to the seat tube 10 to prevent it from rotating in the circumferential direction. Furthermore, the outer wall of the seat tube 10 is provided with a limit groove 14 (see Figure 2 ), the limiting member 70 extends into the limiting groove 14, thereby preventing the seat tube 10 from rotating in the circumferential direction.

[0057] Based on the same inventive concept, an embodiment of the present application further provides a vehicle, which includes the seat tube assembly in the above embodiment. The vehicle in the embodiment of the present application is described by taking a shared bicycle as an example, and the bicycle can be a bicycle, an electric bicycle, a power-assisted bicycle, an electric vehicle, or other vehicle that can be suitable for adjusting the seat height.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A seat tube assembly, characterized in that: include: A seat tube configured to be inserted into the mid-tube; A fixing member, disposed in the middle tube; and The sliding mechanism comprises a plurality of sliding bodies, wherein the sliding bodies are slidably connected to the fixing member along the axis direction of the middle tube and contact the seat tube inserted in the middle tube to form a high pair; The sliding body includes a support member and a rolling unit, wherein the support member is slidably connected to the fixing member and is formed with a receiving portion; the rolling unit is received in the receiving portion and is used to contact with the seat tube to form a high pair; The seat tube assembly also includes a locking assembly; the locking assembly is arranged on the middle tube and is used to fix the seat tube on the middle tube.

2. The seat tube assembly according to claim 1, characterized in that: The plurality of sliding bodies are symmetrically arranged with the central axis of the middle tube as a reference.

3. The seat tube assembly according to claim 2, characterized in that: The rolling unit includes a plurality of balls, the accommodating portion includes a plurality of first accommodating grooves, the balls are accommodated in the first accommodating grooves, and are in point contact with the seat tube.

4. The seat tube assembly according to claim 3, characterized in that: The center connecting line of the plurality of balls in each rolling unit is parallel to the axis of the middle tube.

5. The seat tube assembly according to claim 3, characterized in that: A guide groove matched with the ball is formed on the outer side of the seat tube to guide the seat tube.

6. The seat tube assembly according to claim 1, characterized in that: The rolling unit includes at least one roller, the accommodating portion includes a plurality of second accommodating grooves, the roller is accommodated in the second accommodating grooves, and is in line contact with the seat tube.

7. The seat tube assembly according to claim 1 or 2, characterized in that: The fixing component is provided with a sliding groove adapted to the sliding body, and the sliding body is slidably arranged in the sliding groove.

8. The seat tube assembly according to claim 7, characterized in that: The seat tube assembly further comprises a stopper, which is connected to the fixing member and is located at one end of the slide groove and is used for limiting the position of the sliding body.

9. The seat tube assembly according to claim 1, characterized in that: The seat tube assembly also includes a limiter; The limiting member passes through the locking assembly, the middle tube and the fixing member, and abuts against the seat tube to prevent the seat tube from rotating.

10. A vehicle, characterized in that: The invention comprises a seat tube assembly as claimed in any one of claims 1 to 9.

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