Shock absorbable bicycle riser assembly

Abstract

The utility model provides a shock -absorbing bicycle vertical tube assembly, it contains a handlebar seat, a connecting seat and a buffer assembly. Handlebar seat has two side walls and a top wall, these side walls and top wall form a containing space together, and the bottom side of handlebar seat is open -work structure, containing space is communicated with external environment. Buffer assembly has a buffer block, an adjustment wedge and an adjustment element, buffer block and adjustment wedge are contained in the containing space of handlebar seat, and buffer block is clamped between connecting seat and adjustment wedge, adjustment element passes through the top wall of handlebar seat and is fixed to adjustment wedge, and adjustment element can displace relative to adjustment wedge to change the pressing force of adjustment wedge to buffer block. Therefore, the buffer block of buffer assembly can be conveniently replaced by user, and the function of adjusting the pre -pressure of buffer block is provided.

Description

Technical Field

[0001] This utility model relates to bicycle stem assembly, and more particularly to a shock-absorbing bicycle stem assembly that can effectively absorb vibrations to improve riding comfort when the user rides a bicycle on bumpy roads. Background Technology

[0002] Bicycles are an environmentally friendly and exercise-friendly mode of transportation, so they are becoming increasingly popular. In urban areas, not only are public bicycles available for rent for short commutes, but many people also use bicycles for leisure and recreation on weekends.

[0003] To enhance riding comfort, bicycles often incorporate shock-absorbing structures within the seatpost to absorb vibrations and reduce sway. However, riders typically place their hands on the handlebars. When riding on uneven roads or rocky terrain on mountain trails, vibrations from the front wheel are transmitted to the handlebars, affecting the rider's grip and potentially causing discomfort in the hands over extended periods. This also hinders the rider's control of the bicycle, ultimately impacting safety.

[0004] The handlebars of a bicycle are typically mounted on the stem tube, commonly known as the handlebar stem. The stem tube primarily serves as the transition element between the handlebars and the fork seat tube. Therefore, some manufacturers are currently adding shock-absorbing structures to the stem tube to absorb vibrations transmitted from the front wheel. Patent Publication No. 356802 discloses a bicycle stem tube with a shock-absorbing structure, which includes a damping block and a shock absorber. The damping block is disposed in a receiving groove of the handlebar pivot seat, and the damping block is pivotally mounted between two flaps. The damping block and the shock absorber are used to absorb the vibration force transmitted to the handlebar stem tube, preventing this vibration force from being transmitted to the handlebars.

[0005] After prolonged use, shock absorbers inevitably age, reducing their elasticity or even causing them to lose elasticity and cease absorbing vibrations. This necessitates adjusting the preload or replacing the shock absorbers altogether. However, the shock absorber in the previous patent was fixed between two blades using a combination of a bushing and bolts, making replacement cumbersome. Furthermore, the previous patent did not provide a structure for adjusting the preload of the shock absorber. Therefore, the applicant's proposed solution is to provide a shock-absorbing structure that allows users to easily adjust or replace the shock absorber in the vertical pipe. Utility Model Content

[0006] Given that the existing bicycle stem tubes still have many defects, the main purpose of this utility model is to provide a shock-absorbing bicycle stem tube assembly. The handlebar seat structure design makes it convenient for users to replace the shock-absorbing components, and the shock-absorbing components provide adjustable pre-pressure for the shock-absorbing blocks, thereby optimizing the bicycle stem tube assembly.

[0007] To achieve the aforementioned main objectives, this utility model provides a shock-absorbing bicycle stem assembly, comprising a handlebar seat, a connecting seat, and a buffer assembly. The handlebar seat has two side walls and a top wall, which together form an accommodating space. The bottom side of the handlebar seat has a hollow structure, allowing the accommodating space to communicate with the external environment. The connecting seat is attached to one end of the handlebar seat. The buffer assembly is disposed on the handlebar seat and includes a buffer block, an adjusting wedge, and an adjusting element. The buffer block and the adjusting wedge are accommodated in the accommodating space, with the buffer block sandwiched between the connecting seat and the adjusting wedge. The adjusting element passes through the top wall of the handlebar seat and is fixed to the adjusting wedge. The adjusting element can be displaced relative to the adjusting wedge to change the clamping force of the adjusting wedge on the buffer block.

[0008] With the aforementioned technical features, the buffer block of the buffer assembly is fixed between the connecting seat and the adjusting wedge in a clamping manner. Therefore, if there is a need to replace the buffer block, the user can remove the damaged buffer block from the bottom side of the handle without disassembling other components and then install a new buffer block. In addition, if the buffer block has insufficient elasticity due to aging, the user can rotate the adjusting element to squeeze the adjusting wedge, causing the adjusting wedge to expand outward and tighten the buffer block. This compression increases the preload, thereby improving the elasticity of the buffer block and extending its service life.

[0009] Preferably, the handlebar mount includes a frame with these side walls and a top wall, and an end cap, the end cap being detachably assembled to the frame, the frame and the end cap together forming a first socket. Therefore, the combination of the end cap and the frame facilitates the installation of the handlebar onto the handlebar mount and provides the function of interchangeable handlebars.

[0010] Preferably, each side wall of the handlebar frame of the handlebar seat has a pivot hole, and the connecting seat has a pivot portion and a connecting portion for the pivot portion. A pivot assembly passes through and is fixed in these pivot holes and pivot portions, so that the handlebar seat is pivotally connected to the connecting seat. Therefore, when vibration is transmitted to the bicycle seat assembly, the handlebar seat can deflect downward relative to the connecting seat, and the shock absorber of the shock absorber can absorb the vibration, reducing the chance of vibration being transmitted to the handlebars.

[0011] Preferably, the pivot portion of the connector protrudes outward from the sleeve portion, and the outer surface of the pivot portion abuts against the buffer block of the buffer assembly. Therefore, the pivot portion and the buffer block have a large contact area, allowing the vibration transmitted to the bicycle stem assembly to be completely absorbed by the buffer block.

[0012] Preferably, the buffer assembly also has an upper stop block disposed between the pivot portion of the connecting seat and the handlebar seat. Therefore, after the handlebar seat is deflected downward, the handlebar seat will return to its original position due to the elastic force of the buffer block, and the upper stop block can prevent the handlebar seat from hitting the connecting seat when resetting, thus preventing damage to the handlebar seat and the connecting seat.

[0013] Preferably, the adjusting wedge of the buffer assembly has a gradually widening shape from top to bottom. The adjusting element is inserted into the adjusting wedge from the narrower end, and the side of the adjusting wedge that abuts against the buffer block is abutting surface, which is inclined, and pushes the buffer block to the connecting seat from the abutting surface. Therefore, when the user locks in the adjusting element, the wider end of the adjusting wedge can expand outward smoothly.

[0014] Preferably, an accessory seat is provided on the top side of the handlebar mount, which covers the adjustment element of the shock absorber assembly. Therefore, the top side of the handlebar mount can serve as an area for mounting other bicycle accessories, while also concealing the adjustment element, resulting in a cleaner overall appearance of the bicycle stem assembly.

[0015] Detailed construction, features, assembly, and usage of the bicycle seat tube assembly provided by this utility model will be described in the subsequent detailed description of the embodiments. However, those skilled in the art should understand that these detailed descriptions and the specific embodiments listed for implementing this utility model are for illustrative purposes only and are not intended to limit the scope of the patent application of this utility model. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention, illustrating the form in which the handlebars and the fork stem are installed.

[0017] Figure 2 This is a perspective view of the present invention, showing the view from bottom to top;

[0018] Figure 3 This is an exploded perspective view of the present invention;

[0019] Figure 4 This is an exploded perspective view of the present invention, showing... Figure 3 Another perspective; and

[0020] Figure 5 This is a cross-sectional view of the present invention.

[0021] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0022] 10-Bicycle stem assembly;

[0023] 20-Handheld base;

[0024] 21-Rider's frame;

[0025] 211-Sidewall;

[0026] 212 - Top wall;

[0027] 213 - Pivot hole;

[0028] 214 - Accommodation space;

[0029] 215 - Lockhole;

[0030] 216-Stop section;

[0031] 22-End cap;

[0032] 23 - First set of holes;

[0033] 30-Connector;

[0034] 31-Pivotal section;

[0035] 311 - Perforation;

[0036] 312 - Groove;

[0037] 32-Socket part;

[0038] 40-Buffer components;

[0039] 41-Buffer block;

[0040] 42-Adjusting wedge;

[0041] 421 - Adjustment hole;

[0042] 422 - Abutment surface;

[0043] 43-Adjusting element;

[0044] 44-Upper stop block;

[0045] 50-handlebars;

[0046] 60 - Front fork riser;

[0047] 70 - Pivot assembly;

[0048] 71-Shaft;

[0049] 72-Bearing;

[0050] 73-Shaft sleeve;

[0051] 74 - Shaft fixing component;

[0052] 90 - Decorative cover. Detailed Implementation

[0053] The applicant first clarifies that in the embodiments and accompanying drawings described below, the same reference numerals denote the same or similar components or structural features thereof. It should be noted that the components and structures in the drawings are for illustrative purposes and are not drawn according to actual scale and quantity; and features of different embodiments can be used interchangeably where feasible in actual implementation. Secondly, when it is stated that a component is disposed on another component, it means that the aforementioned component is directly disposed on the other component, or the aforementioned component is indirectly disposed on the other component; that is, one or more other components are disposed between the two components. Conversely, when it is stated that a component is "directly" disposed on another component, it means that no other components are disposed between the two components.

[0054] Please refer to Figures 1 to 5 The bicycle stem assembly 10 provided by this utility model mainly includes a handlebar seat 20, a connecting seat 30, and a buffer assembly 40.

[0055] The handlebar mount 20 includes a handlebar frame 21 and an end cap 22. The end cap 22 is detachably connected to one end of the handlebar frame 21, such that the handlebar frame 21 and the end cap 22 together form a first socket 23, through which the bicycle handlebar 50 can be inserted to assemble into the handlebar mount 20. The other end of the handlebar frame 21 has two side walls 211 and a top wall 212. Each side wall 211 has a pivot hole 213, and the two side walls 211 and the top wall 212 together form an accommodating space 214. The bottom side of the part of the handlebar frame 21 that forms the accommodating space 214 has a hollow structure. After assembling into the bicycle stem assembly 10, this accommodating space 214 is in a state of communication with the external environment.

[0056] The connecting seat 30 has a pivot portion 31 and a sleeve portion 32. The sleeve portion 32 is a hollow structure used to connect the bicycle's front fork stem 60, and multiple locking elements are used to tighten the sleeve portion 32 to clamp and fix the front fork stem 60. The pivot portion 31 is connected to the sleeve portion 32 and protrudes outward from the sleeve portion 32 to form a cylindrical structure. A through hole 311 is also formed in the pivot portion 31. When assembling the handlebar seat 20 and the connecting seat 30, the handlebar frame 21 of the handlebar seat 20 is fitted onto the pivot portion 31 of the connecting seat 30, so that the pivot holes 213 of the two side walls 211 are aligned with the through hole 311 of the pivot portion 31. Then, a pivot assembly 70 is inserted and fixed in the pivot hole 213 and the through hole 311, so that the handlebar seat 20 can be pivotally connected to the connecting seat 30.

[0057] The pivot assembly 70 may include, for example, a shaft 71, two bearings 72, a shaft sleeve 73, and a shaft fixing member 74. First, the shaft sleeve 73 is placed in the through hole 311 of the connecting seat 30. Then, the two bearings 72 are respectively placed at both ends of the shaft sleeve 73. At this time, the handlebar frame 21 of the handlebar seat 20 is fitted with the pivot portion 31 of the connecting seat 30. Next, the shaft 71 is inserted into the through hole 311 through one of the pivot holes 213, and the shaft fixing member 74 is inserted into the through hole 311 through the other pivot hole 213. The shaft 71 can then be locked into the shaft fixing member 74, so that the handlebar seat 20 is connected to the pivot portion 31 of the connecting seat 30 through the pivot assembly 70.

[0058] The buffer assembly 40 has a buffer block 41, an adjusting wedge 42, and an adjusting element 43. The buffer block 41 is made of a soft material, while the adjusting wedge 42 is made of metal. The two elements are housed in the receiving space 214 of the handlebar seat 20. The buffer block 41 is clamped and fixed between the connecting seat 30 and the adjusting wedge 42. The adjusting element 43 passes through the locking hole 215 of the top wall 212 of the handlebar seat 20 and locks into the adjusting hole 421 of the adjusting wedge 42. The adjusting element 43 can be displaced relative to the adjusting wedge 42 to change the clamping force of the adjusting wedge 42 on the buffer block 41. The adjusting wedge 42 has a gradually widening shape, and when placed in the accommodating space 214, it is narrower at the top and wider at the bottom. The side of the adjusting wedge 42 that abuts against the buffer block 41 is abutting surface 422, which is designed as a slope. Therefore, the buffer block 41 abutting against the abutting surface 422 of the adjusting wedge 42 forms a slope. The other side of the buffer block 41 corresponds to the shape of the pivot part 31 of the connecting seat 30, which forms an arc surface. Since the head of the adjusting element 43 is stuck on the top side of the handlebar frame 21 of the handlebar seat 20, the adjusting wedge 42 will not easily fall off from the hollow area below the handlebar frame 21.

[0059] In addition, the buffer assembly 40 also has an upper stop 44, which is made of a soft material and is disposed between the pivot portion 31 of the connecting seat 30 and the handlebar seat 20. The pivot portion 31 can form a groove 312 to accommodate the upper stop 44, and a stop portion 216 is formed on the inner side of the top wall 212 of the handlebar frame 21 of the handlebar seat 20 to abut against the upper stop 44.

[0060] When a user rides a bicycle on an uneven road, the undulations cause the front wheel to vibrate vertically. This vibration is transmitted to the bicycle stem assembly 10 and absorbed by the buffer block 41 of the buffer assembly 40, preventing further transmission to the handlebars 50. If the vibration is too great for the buffer block 41 to fully absorb, the user may press down on the handlebars 50 to grip them tightly. As a result, the handlebar seat 20 will tilt downward relative to the connector 30. After passing over an uneven road, the elasticity of the buffer block 41 will allow the handlebar seat 20 to return to its original position. The upper stop block 44 prevents the handlebar seat 20 from directly impacting the connector 30 during its return, thus preventing damage to both the handlebar seat 20 and the connector 30 due to collision.

[0061] Furthermore, after prolonged use, the buffer block 41 will inevitably age and lose elasticity due to the material. At this time, the user can adjust the preload of the buffer block 41 by rotating the adjusting element 43. Due to the design of the adjusting wedge 42, as the adjusting element 43 continues to lock into the adjusting wedge 42, the adjusting wedge 42 will expand outward from the wider part and from the side of the abutment surface 422 to increase the clamping force on the buffer block 41, thereby changing the preload of the buffer block 41 and extending the service life of the buffer block 41.

[0062] If the buffer block 41 is completely damaged and can no longer be used, the user can first loosen the adjusting element 43 to reduce the clamping force of the adjusting wedge 42 on the buffer block 41, then take out the buffer block 41 from the hollow area on the bottom side of the handle seat 20, and then put the new buffer block 41 between the adjusting wedge 42 and the connecting seat 30. After locking the adjusting element 43, the position of the buffer block 41 can be fixed again.

[0063] In addition, the top wall 212 of the handlebar mount 20 is provided with a locking hole 215 for the adjustment element 43 to pass through. A cover 90 can be provided at this position to cover the exposed adjustment element 43 and smooth the appearance of the handlebar mount 20. Alternatively, an accessory holder can be used at this position instead of the cover 90, which can not only cover the adjustment element 43, but also provide the user with the option to install other bicycle accessories.

[0064] In summary, the shock-absorbing bicycle stem assembly 10 provided by this utility model has at least the following advantages compared with the prior art:

[0065] 1. In the bicycle stem assembly 10 of this utility model, the buffer block 41 of the buffer component 40 is clamped between the connecting seat 30 and the adjusting wedge 42, and a hollow area is reserved on the bottom side of the handlebar seat 20. Therefore, the user does not need to remove other fixing components before removing the buffer block 41 of the buffer component 40, but can directly replace the buffer block 41 through the hollow area, which improves the convenience of maintenance work.

[0066] 2. The bicycle stem assembly 10 of this utility model utilizes an adjusting element 43 passing through an adjusting wedge 42. By rotating the adjusting element 43, the adjusting wedge 42 is squeezed, causing the adjusting wedge 42 to expand outward to compress and fix the buffer block 41. Furthermore, when the buffer block 41 lacks elasticity, the compressing force can be further increased to achieve the effect of changing the pre-pressure of the buffer block 41.

[0067] Finally, it must be stated again that the constituent components disclosed in the above embodiments of this utility model are merely illustrative examples and are not intended to limit the scope of this utility model. Substitutions or variations of other equivalent components should also be within the protection scope of this utility model.

Claims

1. A shock-absorbing bicycle stem assembly, characterized in that, Includes: The handle base has two side walls and a top wall. These side walls and the top wall together form an accommodating space, and the bottom side of the handle base has a hollow structure, which connects to the external environment. A connecting base, which is assembled to one end of the handle base; and A buffer assembly is disposed on the handlebar seat. The buffer assembly has a buffer block, an adjusting wedge and an adjusting element. The buffer block and the adjusting wedge are accommodated in the receiving space, and the buffer block is clamped between the connecting seat and the adjusting wedge. The adjusting element passes through the top wall of the handlebar seat and is fixed to the adjusting wedge. The adjusting element can be displaced relative to the adjusting wedge to change the clamping force of the adjusting wedge on the buffer block.

2. The shock-absorbing bicycle stem assembly according to claim 1, characterized in that, The handlebar mount includes a frame having the side walls and the top wall, and an end cap that is detachably attached to the frame. The frame and the end cap together form a first socket.

3. The shock-absorbing bicycle stem assembly according to claim 1, characterized in that, Each side wall of the handlebar frame has a pivot hole, and the connecting seat has a pivot portion and a sleeve portion that connects to the pivot portion. A pivot assembly passes through and is fixed in these pivot holes and the pivot portion, so that the handlebar frame is pivotally connected to the connecting seat.

4. The shock-absorbing bicycle stem assembly according to claim 3, characterized in that, The pivot portion of the connector protrudes outward from the sleeve portion, and the outer surface of the pivot portion abuts against the buffer block of the buffer assembly.

5. The shock-absorbing bicycle stem assembly according to claim 3 or 4, characterized in that, The buffer assembly also has an upper stop block disposed between the pivot portion of the connector and the handle seat.

6. The shock-absorbing bicycle stem assembly according to claim 1, characterized in that, The adjusting wedge of the buffer assembly has a gradually widening shape from top to bottom. The adjusting element is inserted into the adjusting wedge from the narrower end, and the side of the adjusting wedge that abuts against the buffer block is abutting surface. The abutting surface is inclined and pushes the buffer block to the connecting seat.

7. The shock-absorbing bicycle stem assembly according to claim 1, characterized in that, The top side of the handlebar is provided with an accessory seat that covers the adjustment element of the cushioning assembly.

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