Exercise bicycle and height-adjustable seat thereof

Abstract

The utility model relates to the technical field of exercise bicycles, in particular to an exercise bicycle and a height-adjustable seat thereof, which comprise a height adjusting mechanism connected with an upper insertion pipe and a lower sleeve, the height adjusting mechanism comprises a fixed pipe fitting, a bayonet lock, a hollow guide sleeve and a handle, the fixed pipe fitting is fixedly arranged at an insertion hole of the lower sleeve, and the bayonet lock is arranged on the lower sleeve. One end of the hollow guide sleeve is axially fixed in the fixed pipe fitting; one end of the bayonet lock is connected to the handle, the other end of the bayonet lock penetrates through the hollow guide sleeve, the fixing pipe fitting and the inserting hole, and a reset piece enabling the bayonet lock to move towards the inserting hole is arranged between the bayonet lock and the hollow guide sleeve in a sleeved mode. One end of the handle extends towards the fixing pipe fitting and is provided with a sleeve, and a circumferential fixing assembly arranged in the direction parallel to the displacement direction of the clamping pin is arranged between the sleeve and the fixing pipe fitting. According to the utility model, the handle and the bayonet lock are not easy to loosen and lose without the help of tools; when the vertical height position of the seat needs to be adjusted, only the handle needs to be pulled, then the seat is adjusted to a proper position and then reset, and the product experience feeling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness vehicles, in particular to a fitness vehicle and a height-adjustable seat thereof. Background Art

[0002] With the improvement of people's living standards, outdoor fitness equipment has become widely used, with exercise bikes being the most common type of fitness equipment. Typically, the seat of an outdoor fitness bike is welded to the main frame. This disadvantage is that the distance between the seat and the armrest or handlebar in front of it is fixed, meaning the seat cannot be moved up and down, which fails to meet the user's comfort level. To address this issue, a Chinese patent application (CN103341252A) discloses an exercise bike with a quickly adjustable seat cushion. The seat tube has a plurality of holes extending through the inner and outer walls of the seat tube. A bayonet is provided on the side wall of a hollow guide sleeve of the seat tube, which is inserted into and out of the holes. The hollow guide sleeve is connected to the hollow guide sleeve of the seat tube by threading with a threaded pipe. The bayonet sleeve is located within the hollow guide sleeve, with one end extending into the holes and the other end extending out of the hollow guide sleeve at the end away from the seat tube. This method can adjust the seat height, but because the hollow guide sleeve is threadedly connected to the seat tube hollow guide sleeve, the hollow guide sleeve and the pin can be removed without the help of tools, or the thread may become loose, or the pin may become loose and damaged, or lost. Utility Model Content

[0003] The utility model aims to provide a fitness bike and a height-adjustable seat thereof, which are convenient for adjusting the height and prevent the handle and the latch from getting loose or being lost without the aid of tools.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The height-adjustable seat of the exercise bike includes an upper insert tube with a plurality of limit holes arranged side by side in the upper and lower directions, a lower sleeve with a socket and the socket corresponding to the limit hole connection line, and a height adjustment mechanism connecting the upper insert tube and the lower sleeve, the height adjustment mechanism includes a fixed pipe fitting, a bayonet, a hollow guide sleeve and a handle, the fixed pipe fitting axially passes through and is fixedly installed at the socket of the lower sleeve, one end of the hollow guide sleeve is axially fixed in the fixed pipe fitting; one end of the bayonet is connected to the handle and the other end passes through the hollow guide sleeve, the fixed pipe fitting and the socket and is movably inserted into one of the limit holes, a reset member for displacing the bayonet pin toward the socket is set between the bayonet pin and the hollow guide sleeve, one end of the handle is provided with a sleeve extending toward the fixed pipe fitting and a circumferential fixing component arranged along a direction parallel to the displacement direction of the bayonet pin is provided between the sleeve and the fixed pipe fitting.

[0006] Preferably, the fixing pipe is a nut column, and the hollow guide sleeve is threadedly connected to the nut column.

[0007] Preferably, the fixed pipe is welded to the lower casing.

[0008] Preferably, the reset element is a compression spring.

[0009] Preferably, a limiting step is formed at the position of the bayonet located inside the hollow guide sleeve, a retaining ring is provided at one end of the hollow guide sleeve away from the fixed pipe, and both ends of the reset member respectively abut against the retaining ring and the limiting step.

[0010] Preferably, a necked slot is provided on the bayonet pin, a retaining spring is mounted in the necked slot, and the outer diameter of the retaining spring is larger than the inner diameter of the retaining ring of the hollow guide sleeve.

[0011] Preferably, the handle is provided with a countersunk hole consisting of a first hole portion and a second hole portion which are interconnected. The second hole portion is arranged away from the hollow guide sleeve relative to the first hole portion. The end of the bayonet away from the fixed pipe fitting is set as a threaded end and the threaded end passes through the first hole portion and is fixed to the handle at the position of the second hole portion by locking with a nut. A plug covering the nut is embedded in the second hole portion.

[0012] Preferably, the cross-sectional shape of the first hole portion and the cross-sectional shape of the threaded end of the bayonet are both non-circular.

[0013] Preferably, the circumferential fixing assembly includes a limiting groove provided on the inner wall surface of the sleeve of the handle and a limiting strip protruding from the outer wall surface of the fixing pipe, and the limiting groove and the limiting strip cooperate with each other to limit the rotation of the handle.

[0014] The utility model also provides a fitness bike, comprising the height-adjustable seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The height-adjustable seat of the utility model includes a height adjustment mechanism, which includes a handle, a pin, a hollow guide sleeve and a fixed pipe fitting. One end of the hollow guide sleeve is axially fixed in the fixed pipe fitting to provide an axial displacement guide for the pin and withstand the axial tension generated by pulling the pin. One end of the pin is connected to the handle so that the pin can be driven to axially displace along the hollow guide sleeve by manipulating the handle. At the same time, a sleeve extending from the handle is sleeved on the fixed pipe fitting and a circumferential fixing component is provided between the two. The circumferential fixing component allows the handle and the pin to only be able to axially displace in a straight line but not to rotate, thereby reducing the wear of the pin caused by rotation. On the other hand, the handle cooperates with the fixed pipe fitting to hide the hollow guide sleeve inside, and the hollow guide sleeve cannot be directly manipulated. Therefore, the handle and the pin will not loosen or be easily lost without the aid of tools.

[0017] When the height of the seat needs to be adjusted, just pull the handle, adjust the seat to the appropriate position and then reset it. It is very convenient to use and can ensure that the user obtains the best posture for using the exercise bike, increasing the product experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the fitness bike of the present utility model.

[0019] Figure 2 for Figure 1 A is a partial enlarged view shown in FIG.

[0020] Figure 3 This is a schematic diagram of the adjustable seat structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the handle structure of the utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the bayonet and the fixed pipe fitting of the utility model.

[0023] Markings in the figure: 101, upper insert; 102, lower sleeve; 11, fixed pipe; 12, hollow guide sleeve; 13, bayonet pin; 14, handle; 15, reset piece; 16, retaining spring; 17, nut; 18, plug; 111, limit strip; 131, necking slot; 141, limit slot; 140, sleeve. DETAILED DESCRIPTION

[0024] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0025] like Figure 1-Figure 5 As shown, this embodiment provides an exercise bike, including an adjustable height seat, the adjustable height seat including an upper insert tube 101, a lower sleeve 102 and a height adjustment mechanism connecting the upper insert tube 101 and the lower sleeve 102, the top end of the upper insert tube 101 is fixedly connected to a seat cushion, the lower sleeve 102 is fixedly connected to the bike body, the upper insert tube 101 is inserted into the lower sleeve 102 and the height is adjusted by the height adjustment mechanism and the relative position is maintained after adjustment.

[0026] The upper insert tube 101 is provided with a plurality of limit holes arranged side by side in the upper and lower parts. The centers of the limit holes are on the same connecting line and each limit hole corresponds to a different height. The lower sleeve 102 has an insertion hole and the insertion hole corresponds to the limiting hole connecting line, and the height adjustment mechanism is provided at the insertion hole.

[0027] The height adjustment mechanism includes a fixed pipe 11, a bayonet 13, a hollow guide sleeve 12, and a handle 14. The fixed pipe 11 axially extends through the lower sleeve 102 and is fixedly mounted at the insertion hole of the lower sleeve 102 by welding. One end of the hollow guide sleeve 12 is axially fixed within the fixed pipe 11. Specifically, the fixed pipe 11 of this embodiment is a nut standoff, and the hollow guide sleeve 12 is threadedly connected to the nut standoff. This allows the hollow guide sleeve 12 to withstand the axial tension of the bayonet 13 and maintain axial fixation during use.

[0028] One end of the bayonet 13 is connected to the handle 14 and the other end passes through the hollow guide sleeve 12, the fixed pipe 11 and the plug hole and is movably inserted into one of the limiting holes. The bayonet 13 is inserted into the limiting holes at different heights to achieve adjustment at different heights.

[0029] A reset member 15 is provided between the bayonet pin 13 and the hollow guide sleeve 12 to displace the bayonet pin 13 toward the insertion hole. The reset member 15 is a compression spring. A limiting step is formed at the position of the bayonet pin 13 inside the hollow guide sleeve 12. A retaining ring is provided at the end of the hollow guide sleeve 12 away from the fixed pipe 11. The two ends of the reset member 15 are respectively against the retaining ring and the limiting step. When the bayonet pin 13 is pulled outward by an external force, the compression spring will be squeezed and the head of the bayonet pin 13 will be pulled out of the limiting hole. When the external force is released, the reverse reset action of the compression spring will be used to insert the bayonet pin 13 into the limiting hole again, thereby achieving the fixation of the upper insert tube 101 and the lower sleeve 102.

[0030] In addition, the bayonet 13 is provided with a constricted slot 131, within which a retaining spring 16 is secured. The outer diameter of the retaining spring 16 is larger than the inner diameter of the retaining ring of the hollow guide sleeve 12. Thus, the retaining spring 16 limits the insertion depth of the bayonet 13 and the wrapping length between the handle 14 and the fixed pipe 11. Of course, in other examples, other structural designs can also be used to control the insertion depth and wrapping length.

[0031] In this embodiment, the connection structure between the bayonet pin 13 and the handle 14 can be achieved in a variety of ways, including direct welding or the following: the handle 14 is provided with a countersunk hole consisting of a first and second interconnected hole portion. The second hole portion is located farther from the hollow guide sleeve 12 than the first hole portion. The end of the bayonet pin 13, distal from the fixing tube 11, is threaded and passes through the first hole portion. This threaded end is locked to the handle 14 at the second hole portion via a nut 17, preferably a locknut. The second hole portion is embedded with a plug 18 to cover the nut 17. To prevent the bayonet pin 13 from rotating when the nut 17 is tightened onto it, the cross-sectional shape of the first hole portion and the cross-sectional shape of the threaded end of the bayonet pin 13 are both non-circular, such as a racetrack shape.

[0032] One end of the handle 14 is provided with a sleeve 140 extending toward the fixed pipe 11, and a circumferential fixing component arranged along the displacement direction parallel to the pin 13 is provided between the sleeve 140 and the fixed pipe 11. The end of the hollow guide sleeve 12 away from the fixed pipe 11 is located in the sleeve 140, and the sleeve 140 and the fixed pipe 11 are sleeved together and have a wrapping length. The circumferential fixing component includes a limit groove 141 on the inner wall surface of the sleeve 140 of the handle 14 and a limit bar 111 protruding from the outer wall surface of the fixed pipe 11. The limit groove 141 and the limit bar 111 cooperate with each other to limit the rotation of the handle 14. In this way, the handle 14 will not fall off or be damaged outdoors without the need for professional disassembly tools. At the same time, the hollow guide sleeve 12 is hidden inside, and it is impossible to directly apply force to the hollow guide sleeve 12 to loosen the hollow guide sleeve 12.

[0033] In this embodiment, the seat can be adjusted up or down by manually pulling out the handle 14, causing the sleeve 140 of the handle 14 to move linearly along the axial direction of the fixed tube 11 without leaving the fixed tube 11. The latch 13 is then pulled out so that the latch 13 is not inserted into the limiting hole. After the height is adjusted to the desired position, the handle 14 is released, and the reset member 15 resets the handle 14 and the latch 13. The latch 13 is then inserted into the corresponding limiting hole, securing the seat. In this way, when the seat needs to be adjusted up or down, one only needs to pull out the handle 14, adjust the seat to the desired position, and then reset it.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An adjustable height seat for an exercise bike, comprising an upper insert having a plurality of limit holes arranged side by side, a lower sleeve having insertion holes corresponding to the limit holes on a line connecting the upper and lower inserts, and a height adjustment mechanism connecting the upper and lower sleeves, characterized in that: The height adjustment mechanism includes a fixed pipe fitting, a bayonet, a hollow guide sleeve and a handle. The fixed pipe fitting is axially passed through and fixedly installed at the socket of the lower sleeve. One end of the hollow guide sleeve is axially fixed in the fixed pipe fitting; one end of the bayonet is connected to the handle and the other end passes through the hollow guide sleeve, the fixed pipe fitting and the socket and is movably inserted into one of the limiting holes. A reset member for displacing the bayonet pin toward the socket is provided between the bayonet pin and the hollow guide sleeve. A sleeve is provided at one end of the handle extending toward the fixed pipe fitting and a circumferential fixing component arranged parallel to the displacement direction of the bayonet pin is provided between the sleeve and the fixed pipe fitting.

2. The height-adjustable seat for an exercise bike according to claim 1, characterized in that: The fixing pipe is a nut column, and the hollow guide sleeve is threadedly connected to the nut column.

3. The height-adjustable seat for an exercise bike according to claim 1, characterized in that: The fixed pipe is welded to the lower casing.

4. The height-adjustable seat for an exercise bike according to claim 1, characterized in that: The reset element is a compression spring.

5. The height-adjustable seat for an exercise bike according to claim 1, characterized in that: A limiting step is formed at the position of the bayonet located inside the hollow guide sleeve, and a retaining ring is provided at one end of the hollow guide sleeve away from the fixed pipe, and both ends of the reset member respectively abut against the retaining ring and the limiting step.

6. The height-adjustable seat for an exercise bike according to claim 5, characterized in that: The bayonet pin is provided with a necked slot, in which a retaining spring is mounted, and the outer diameter of the retaining spring is larger than the inner diameter of the retaining ring of the hollow guide sleeve.

7. The height-adjustable seat for an exercise bike according to claim 1, characterized in that: The handle is provided with a countersunk hole consisting of a first hole portion and a second hole portion that are interconnected. The second hole portion is arranged away from the hollow guide sleeve relative to the first hole portion. The end of the pin away from the fixed pipe fitting is set as a threaded end and the threaded end passes through the first hole portion and is fixed to the handle at the position of the second hole portion by locking with a nut. A plug covering the nut is embedded in the second hole portion.

8. The height-adjustable seat for an exercise bike according to claim 7, characterized in that: The cross-sectional shape of the first hole portion and the cross-sectional shape of the threaded end of the bayonet pin are both non-circular.

9. The height-adjustable seat for an exercise bike according to any one of claims 1 to 8, characterized in that: The circumferential fixing assembly includes a limiting groove provided on the inner wall surface of the sleeve of the handle and a limiting strip protruding from the outer wall surface of the fixed pipe. The limiting groove and the limiting strip cooperate with each other to limit the rotation of the handle.

10. An exercise bike, characterized in that: The invention comprises a height-adjustable seat according to any one of claims 1 to 9.

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