Seat post structure and bicycle

Abstract

The utility model provides a seat post structure and a bicycle. The seat post structure comprises a lower pipe, an upper pipe, an oil seal, a clamping seat and an expansion module, the lower pipe comprises an upper end and an upper end face, and the upper end face is located at the upper end. And the upper pipe is inserted into the lower pipe from the upper end and is connected with the cushion. The oil seal is sleeved on the upper pipe and comprises a sleeve part and a flange. The sleeve part extends into the upper end, and the flange protrudes outwards in the radial direction from the top end of the sleeve part and corresponds to the upper end face. The clamping seat comprises a clamping ring and a clamping piece. The clamping ring is located on the outer side of the sleeve part, and the clamping piece is connected to the clamping ring. The expansion module is detachably connected to the clamping piece. Therefore, the use convenience can be improved.

Description

Technical Field

[0001] The utility model relates to a seat post structure and a bicycle, in particular to a seat post structure and a bicycle capable of being equipped with an expansion module. Background Art

[0002] Bicycles have been around for a long time. In addition to being a means of transportation, they can also achieve fitness effects, and zero exhaust emissions is one of their advantages. As bicycles become more and more popular, more and more accessories can be installed on bicycles to improve the convenience and safety of use, such as lights. Existing accessories are connected to the clamp ring, and the clamp ring can be locked on the seat post to achieve the purpose of installing accessories.

[0003] However, the cost of such an accessory with a clamp ring is relatively high, and users need additional tools when disassembling and assembling the accessory, which easily causes inconvenience in use. Therefore, there is still room for improvement. Utility Model Content

[0004] The utility model provides a seat post structure and a bicycle, which can improve the convenience of use through structural configuration.

[0005] According to one embodiment of the utility model, a seat rod structure is provided, comprising a lower tube, an upper tube, an oil seal, a snap-fit ​​seat and an expansion module. The lower tube comprises an upper end and an upper end surface, and the upper end surface is located at the upper end. The upper tube is inserted into the lower tube from the upper end, and the upper tube is used to connect the seat cushion. The oil seal is sleeved on the upper tube and comprises a sleeve portion and a flange. The sleeve portion extends into the upper end, and the flange protrudes radially outward from the top end of the sleeve portion and corresponds to the upper end surface. The snap-fit ​​seat comprises a snap ring and a snap member. The snap ring is located outside the sleeve portion, and the snap member is connected to the snap ring. The expansion module is detachably connected to the snap member.

[0006] Thus, the expansion module can be easily disassembled and assembled through the snap-fit ​​seat without the need for additional tools, thereby improving the convenience of use.

[0007] According to the seat post structure of the aforementioned embodiment, the clamping ring may be located between the flange and the upper end surface.

[0008] According to the seat post structure of the aforementioned embodiment, the flange may include a top portion and a side ring portion, wherein the top portion protrudes radially outward from the top end of the sleeve portion, and the side ring portion extends downward from the top portion along the axis of the lower tube and forms a clamping ring space with the top portion, wherein the clamping ring space is used to accommodate a clamping ring.

[0009] According to the seat post structure of the aforementioned embodiment, the lower tube may further include a plane extending downward from the upper end surface along the axis and corresponding to the engaging member.

[0010] According to the seat post structure of the aforementioned embodiment, the lower tube may further include a clamping groove located at the upper end, and the engaging seat further includes a limiting arm connected between the clamping ring and the engaging member, and the limiting arm is limited by the clamping groove.

[0011] According to the seat post structure of the aforementioned embodiment, the expansion module may further include two limiting grooves. When the expansion module is inserted into the engaging member, two side edges of the engaging member are respectively located in the two limiting grooves.

[0012] According to the seat post structure of the aforementioned embodiment, the engaging seat may further include an engaging hole, which passes through the engaging member and is located between the two side edges. The expansion module further includes a limiting protrusion located between the two limiting grooves, and the limiting protrusion is used to protrude into the engaging hole.

[0013] According to another embodiment of the utility model, a bicycle is provided, comprising a frame, two wheels, a seat post structure of the above embodiment, and a seat cushion. The two wheels are arranged on the frame. The seat post structure is arranged on the frame. The seat cushion is arranged on the upper tube of the seat post structure.

[0014] According to the bicycle of the above embodiment, the flange includes a top and a side ring portion, the top protrudes radially outward from the top end of the sleeve portion, the side ring portion extends downward from the top along the axis of the lower tube and forms a clamping ring space with the top, and the clamping ring space is used to accommodate a clamping ring.

[0015] In the bicycle according to the above embodiment, the down tube may further include a plane extending downward from the upper end surface along the axis and corresponding to the engaging member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram of a seat post structure according to an embodiment of the present invention is shown;

[0017] Figure 2 To illustrate Figure 1 An exploded schematic diagram of the seat post structure of an embodiment;

[0018] Figure 3 To illustrate Figure 1 A three-dimensional schematic diagram of an expansion module of a seat post structure of an embodiment;

[0019] Figure 4 To illustrate Figure 1 A schematic cross-sectional view of a seat post structure of an embodiment;

[0020] Figure 5 To illustrate Figure 1 Another schematic cross-sectional view of the seat post structure of the embodiment; and

[0021] Figure 6 The figure is a side view schematic diagram of a bicycle according to another embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will describe embodiments of the present invention with reference to the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. However, the reader should understand that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and elements will be illustrated in a simple schematic manner in the drawings; and repeated elements may be represented by the same number or similar number.

[0023] In addition, the terms "first", "second", "third" and the like in this document are only used to describe different elements or components, and do not limit the elements / components themselves. Therefore, the first element / component may also be referred to as the second element / component. Moreover, the combination of elements / components / mechanisms / modules in this document is not a generally known, conventional or existing combination in this field. Whether the elements / components / mechanisms / modules themselves are existing cannot be used to determine whether their combination relationship is easy to be easily completed by a person of ordinary skill in the technical field.

[0024] See also Figure 1 and Figure 2 ,in Figure 1 FIG. 1 is a three-dimensional schematic diagram of a seat post structure 100 according to an embodiment of the present invention. Figure 2 To illustrate Figure 1 The seat post structure 100 of the embodiment is an exploded view. The seat post structure 100 includes a lower tube 110, an upper tube 120, an oil seal 130, a snap-fit ​​seat 140 and an expansion module 150. The lower tube 110 includes an upper end 111 and an upper end surface 112, and the upper end surface 112 is located at the upper end 111. The upper tube 120 is inserted into the lower tube 110 from the upper end 111, and the upper tube 120 is used to connect the seat cushion (not shown). Figures 1 to 5 The oil seal 130 is sleeved on the upper tube 120 and includes a sleeve portion 131 and a flange 132. The sleeve portion 131 extends into the upper end 111, and the flange 132 protrudes radially outward from the top of the sleeve portion 131 and corresponds to the upper end surface 112. The snap seat 140 includes a snap ring 141 and a snap member 142. The snap ring 141 is located outside the sleeve portion 131, and the snap member 142 is connected to the snap ring 141. The expansion module 150 is detachably connected to the snap member 142.

[0025] Thus, the expansion module 150 can be conveniently assembled and disassembled through the engaging seat 140 without requiring additional tools, thereby improving the convenience of use.

[0026] See also Figure 3 , Figure 4 and Figure 5 , and see also Figure 2 ,in Figure 3 To illustrate Figure 1 A three-dimensional schematic diagram of the expansion module 150 of the seat post structure 100 of the embodiment, Figure 4 To illustrate Figure 1 A schematic cross-sectional view of the seat post structure 100 of the embodiment, Figure 5 To illustrate Figure 1 Another cross-sectional view of the seat post structure 100 of the embodiment. The upper tube 120 may include an upper tube body 121 and an upper tube bushing 122. The upper tube body 121 is a hollow tubular structure and includes a first end for connecting a seat cushion. The upper tube bushing 122 is sleeved on the second end of the upper tube body 121 to improve the smoothness of the movement of the upper tube 120 relative to the lower tube 110.

[0027] The lower tube 110 also has a hollow tubular structure, and the outer diameter of the tube wall of the upper tube 120 corresponding to the upper end 111 gradually increases. The upper tube 120 may further include an inner annular groove 115, which is used to accommodate the sleeve portion 131 of the oil seal 130. Specifically, the inner diameter of the tube wall corresponding to the upper end 111 may be enlarged to form an inner annular groove 115 with a larger diameter, so that when the oil seal 130 and the upper tube 120 are inserted into the upper end 111, the sleeve portion 131 of the oil seal 130 may be correspondingly accommodated in the inner annular groove 115. The lower tube 110 may further include a plane 113 and a clamping groove 114. The plane 113 extends downward from the upper end surface 112 along the axis X1 of the lower tube 110 and corresponds to the clamping member 142. The clamping groove 114 is located at the upper end 111, and as shown in FIG. Figure 2 and Figure 4 As shown, the locking groove 114 is in an oblique groove shape and extends from the upper end surface 112 toward the plane 113 . The locking groove 114 can be used to limit the limiting arm 144 of the locking seat 140 .

[0028] The clamping ring 141 is an annular structure, which is sleeved on the sleeve portion 131, and can be located between the flange 132 and the upper end surface 112 when installed on the lower tube 110. The snap-fit ​​seat 140 may further include a snap-fit ​​hole 143 and a limit arm 144. The snap-fit ​​hole 143 passes through the snap-fit ​​member 142 and is located between the two side edges of the snap-fit ​​member 142. The limit arm 144 can be connected between the snap-fit ​​ring 141 and the snap-fit ​​member 142. Specifically, the snap-fit ​​member 142 is a plate-like structure with two side edges, and the snap-fit ​​hole 143 passes through the middle section of the snap-fit ​​member 142. The snap-fit ​​seat 140 may further include two arc arms 145. The two arc arms 145 are slightly arc-shaped and connected between the snap-fit ​​ring 141 and the snap-fit ​​member 142. Figure 2 As shown, the limiting arm 144 is located between the two arc arms 145 , and the limiting arm 144 and the two arc arms 145 are both connected to the upper edge of the engaging member 142 , so that the engaging member 142 extends downward along the axis X1 relative to the snap ring 141 .

[0029] The oil seal 130 may further include a tightening portion 133, which may extend upward from the sleeve portion 131 along the axis X1. The tightening portion 133, the sleeve portion 131 and the flange 132 may be connected as one, and the flange 132 may extend radially outward from the connection between the tightening portion 133 and the sleeve portion 131. The tightening portion 133 may elastically abut against the upper tube 120, and the sleeve portion 131 may elastically abut against the side wall of the inner ring groove 115, so as to achieve a dustproof effect. The flange 132 may include a top portion 132a and a side ring portion 132b, the top portion 132a radially protruding outward from the top end of the sleeve portion 131, and the side ring portion 132b extending downward from the top portion 132a along the axis X1 and forming a snap ring space with the top portion 132a, and the snap ring space is provided for accommodating the snap ring 141.

[0030] like Figure 4 As shown, the top 132a and the side ring portion 132b are connected to form a cap-like structure. Therefore, after the snap ring 141 is sleeved on the sleeve portion 131 from bottom to top along the axis X1, it can move upward to a position against the top 132a and enter the snap ring space, and after the oil seal 130 is installed on the lower tube 110, it can be pressed between the top 132a and the upper end surface 112. Since the lower tube 110 has a plane 113 located at the upper end 111, the tube wall portion of the lower tube 110 can be radially retracted, and there is space for the clamping member 142 to be set, which can achieve a more aesthetic effect. In addition, the limiting arm 144 of the clamping seat 140 can be correspondingly protruded into the limiting groove 151, which can achieve a better anti-rotation effect.

[0031] like Figure 3 , Figure 4 and Figure 5 As shown, the expansion module 150 may further include two limiting grooves 151 and a limiting protrusion 152. When the expansion module 150 is inserted into the engaging member 142, the two side edges of the engaging member 142 are respectively located in the two limiting grooves 151. The limiting protrusion 152 is located between the two limiting grooves 151, and the limiting protrusion 152 is used to protrude into the engaging hole 143. Specifically, the expansion module 150 may have a taillight structure and further include a housing 153, a circuit board 154 and an elastic arm 155. The circuit board 154 may be disposed in the housing 153, the housing 153 includes an opening (not shown), the two limiting grooves 151 are disposed on two sides of the opening, the elastic arm 155 protrudes into the opening from top to bottom, and the limiting protrusion 152 is located on the elastic arm 155. Therefore, the expansion module 150 can be aligned with the engaging member 142 from top to bottom along the axis X1, so that the two side edges of the engaging member 142 respectively enter the two limiting grooves 151, and the elastic arm 155 deforms and resets to make the limiting protrusion 152 protrude into the engaging hole 143. Figure 5 As shown, the expansion module 150 is combined with the engaging seat 140. In other embodiments, the expansion module can be a reflector, a cup holder or other accessories, etc., but is not limited thereto.

[0032] See also Figure 6 ,in Figure 6 FIG. 2 is a side view of a bicycle 200 according to another embodiment of the present invention. According to another embodiment of the present invention, a bicycle 200 is provided, comprising a frame 210, two wheels 220, a seat post structure 230 and a seat cushion 240. The two wheels 220 are disposed on the frame 210. The seat post structure 230 is disposed on the frame 210. The seat cushion 240 is disposed on the upper tube of the seat post structure 230 (not shown). Figure 6 The seat post structure 230 may be Figures 1 to 5 The seat post structure 100 is described in detail.

[0033] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the attached claims.

[0034]

Explanation of symbols

[0035] 100,230: Seatpost structure

[0036] 110: Down tube

[0037] 111: Top

[0038] 112: Upper end surface

[0039] 113: Plane

[0040] 114: Card groove

[0041] 115: Inner ring groove

[0042] 120: Top tube

[0043] 121: Upper tube body

[0044] 122: Upper tube bushing

[0045] 130: Oil seal

[0046] 131: Casing

[0047] 132: Flange

[0048] 132a: Top

[0049] 132b: side ring part

[0050] 133: tightening part

[0051] 140: snap-fit ​​seat

[0052] 141: Snap ring

[0053] 142: snap-fit ​​piece

[0054] 143: snap-fit ​​hole

[0055] 144: Limiting arm

[0056] 145: Arc Arm

[0057] 150: Expansion Module

[0058] 151: Limiting groove

[0059] 152: Limiting convex

[0060] 153: Shell

[0061] 154: Circuit Board

[0062] 155: Elastic Arm

[0063] 200: Bicycle

[0064] 210: Frame

[0065] 220:Wheel

[0066] 240: Cushion

[0067] X1: axis.

Claims

1. A seat post structure, characterized in that: Include: A lower tube including an upper end and an upper end surface, wherein the upper end surface is located at the upper end; An upper tube, inserted into the lower tube from the upper end, and the upper tube is used to connect to the seat cushion; The oil seal is sleeved on the upper tube and comprises: a sleeve portion extending into the upper end; and A flange protrudes radially outward from a top end of the sleeve portion and corresponds to the upper end surface; Snap-on seat, including: a snap ring located outside the sleeve portion; and A snap-fitting member connected to the snap ring; and The expansion module is detachably connected to the engaging member.

2. The seat post structure according to claim 1, characterized in that: The clamping ring is located between the flange and the upper end surface.

3. The seat post structure according to claim 2, characterized in that: The flange includes a top portion and a side ring portion. The top portion radially protrudes outward from the top end of the sleeve portion. The side ring portion extends downward from the top portion along the axis of the lower tube and forms a clamping ring space with the top portion. The clamping ring space is used to accommodate the clamping ring.

4. The seat post structure according to claim 3, characterized in that: The lower tube further comprises a plane, which extends downward from the upper end surface along the axis and corresponds to the engaging member.

5. The seat post structure according to claim 4, characterized in that: The lower tube further comprises a clamping groove located at the upper end, and the clamping seat further comprises a limiting arm connected between the clamping ring and the clamping member, and the limiting arm is limited by the clamping groove.

6. The seat post structure according to claim 1, characterized in that: The expansion module further comprises two limiting grooves. When the expansion module is inserted into the engaging member, two side edges of the engaging member are respectively located in the two limiting grooves.

7. The seat post structure according to claim 6, characterized in that: The engaging seat further comprises an engaging hole, which penetrates through the engaging member and is located between the two side edges. The expansion module further comprises a limiting protrusion located between the two limiting grooves, and the limiting protrusion is used to protrude into the engaging hole.

8. A bicycle, characterized in that: Include: Frame; Two wheels are arranged on the frame; The seat post structure as claimed in claim 1, disposed on the bicycle frame; and A seat cushion is arranged on the upper tube of the seat post structure.

9. The bicycle according to claim 8, characterized in that The flange includes a top portion and a side ring portion. The top portion radially protrudes outward from the top end of the sleeve portion. The side ring portion extends downward from the top portion along the axis of the lower tube and forms a clamping ring space with the top portion. The clamping ring space is used to accommodate the clamping ring.

10. The bicycle according to claim 9, characterized in that The lower tube further comprises a plane, which extends downward from the upper end surface along the axis and corresponds to the engaging member.

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