CN216508827U

CN216508827U - Adjustable bicycle frame

Info

Publication number: CN216508827U
Application number: CN202121807600.0U
Authority: CN
Inventors: 刘凯
Original assignee: Tianjin Fuji Ta Bicycle Co ltd
Current assignee: Tianjin Fujita Bicycle Industry Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-05-13
Anticipated expiration: 2031-08-04

Abstract

The utility model provides an adjustable bicycle frame, which belongs to the technical field of bicycles and comprises a front fork connecting frame, wherein the left end of the front fork connecting frame is movably hinged with a pedal connecting frame through a hinge shaft, the left end of the pedal connecting frame is fixedly connected with a rear wheel connecting frame, the upper part of the right end of the pedal connecting frame is fixedly connected with a cushion connecting frame, the upper side of the cushion connecting frame is provided with a cushion connecting rod, a frame is fixedly connected between the upper end of the pedal connecting frame and the lower end of the cushion connecting frame, the upper side of the front fork connecting frame is provided with a rotating mechanism, the rotating mechanism is connected with the front fork connecting frame to realize the rotation of the pedal connecting frame, and a limiting mechanism is arranged in the frame; the device can freely adjust the distance from the handlebar to the upper body of a user and the distance from the cushion to the pedal to adapt to the body shapes of different users or the change of the frame structure caused by tires of different sizes so as to enhance the comfort degree during riding and the structural stability of the bicycle body.

Description

Adjustable bicycle frame

Technical Field

The utility model belongs to the technical field of bicycles, and particularly relates to an adjustable bicycle frame.

Background

The bicycle, also known as a bicycle or a bicycle, is a green and environment-friendly vehicle, and is driven to move by pedaling as power after a person rides the bicycle. The bicycle industry has evolved over a hundred years from traditional walk-instead vehicles to sports, mountain, and leisure types, now becoming a popular sport, fitness, leisure, and entertainment product. Bicycles are assembled from a large number of parts, wherein the frame, as a skeleton of the bicycle, is of vital importance for the functionality, quality, etc. of the bicycle.

The existing bicycle frame is generally formed by welding a plurality of components, the adjustability is poor, for example, when tires with different sizes and specifications need to be replaced due to the body shapes of users or different road conditions and the like, the fixed frame structure is poor in compatibility with a new tire, so that the bicycle is unstable in structure and inconvenient to ride.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an adjustable bicycle frame, and aims to solve the problems that in the prior art, the adjustability is poor, for example, when tires with different sizes and specifications need to be replaced due to the body type of a user or different road conditions, the fixed frame structure has poor compatibility with a new tire, so that the bicycle is unstable in structure and inconvenient to ride.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a bicycle frame with adjustable, includes the front fork link, the left end of front fork link articulates through the hinge activity has the running-board link, the left end fixedly connected with rear wheel link of running-board link, the right-hand member upper portion fixedly connected with cushion link of running-board link, the upside of cushion link is equipped with the cushion connecting rod, fixedly connected with frame between the upper end of running-board link and the lower extreme of cushion link, the upside of front fork link is equipped with slewing mechanism, slewing mechanism is connected in order to realize its rotation with the front fork link, be equipped with stop gear in the frame, the upside of cushion link is equipped with elevating system, elevating system is connected in order to realize that it does up-and-down linear motion with the cushion connecting rod.

As a preferred aspect of the present invention, the rotating mechanism includes an arc plate, a first arc rack, a second arc rack, two gears, and two first rotating rods, two rectangular grooves are respectively formed at the left and right ends of the frame, the arc plate is fixedly connected to the circumferential surface of the front fork connecting frame, the left end of the arc plate movably penetrates the left end of the frame and extends leftward, the first arc rack and the second arc rack are respectively fixedly connected to the upper and lower ends of the arc plate, the two first rotating rods are both rotatably connected between the front and rear inner walls of the frame, the two gears are respectively fixedly connected to the circumferential surfaces of the two first rotating rods, the gear located at the upper side is engaged with the first arc rack, and the gear located at the lower side is engaged with the second arc rack.

As a preferable scheme of the present invention, the limiting mechanism includes two ratchet wheels, two pawls, two second rotating rods and two springs, the two second rotating rods are respectively rotatably connected to the front and rear inner walls of the frame, the far ends of the two second rotating rods respectively movably penetrate through the front and rear ends of the frame and extend outward, the two springs are respectively sleeved on the circumferential surfaces of the two second rotating rods, the far ends of the two springs are respectively fixedly connected to the front and rear inner walls of the frame, the near ends of the two springs are respectively fixedly connected to the circumferential surfaces of the two second rotating rods, the two ratchet wheels are respectively fixedly connected to the circumferential surfaces of the two first rotating rods, the two pawls are respectively fixedly connected to the circumferential surfaces of the two second rotating rods, and the two pawls are respectively intermittently engaged with the two ratchet wheels.

As a preferable scheme of the present invention, the lifting mechanism includes a screw nut, a screw rod, and an empty groove, the empty groove is formed at the upper end of the cushion link, the screw rod is fixedly connected to the lower end of the cushion link, the screw nut is fixedly connected to the circumferential inner wall of the empty groove, and the screw nut is threadedly connected to the circumferential surface of the screw rod.

As a preferable scheme of the present invention, two first reinforcing ribs are fixedly connected between the adjacent ends of the rear wheel connecting frame and the pedal connecting frame, and a second reinforcing rib is fixedly connected between the adjacent ends of the rear wheel connecting frame and the cushion connecting frame.

As a preferable scheme of the present invention, the far ends of the two second rotating rods are both fixedly connected with a handle.

Compared with the prior art, the utility model has the beneficial effects that:

1. in this scheme, need to change the distance between front fork link and the cushion connecting rod and the distance between cushion connecting rod and the running-board link when the user according to health conditions such as self height arm length, or when leading to the distance passive change between front fork link and the cushion connecting rod owing to the tire of having changed different dimensions, slewing mechanism through being equipped with can make the front fork link use the mid point of hinge as the centre of a circle do circular arc motion to the distance of left rotation in order to change front fork link to cushion connecting rod, elevating system through being equipped with can make the cushion connecting rod reciprocate in order to change the distance of cushion connecting rod to running-board link.

2. In this scheme, the stop gear who is equipped with can play limiting displacement to the rotation of front fork link through its opening and shutting, and the front fork link just can rotate when stop gear loosens spacingly to avoided the front fork link to take place the circumstances of rotation about jolting because of riding the in-process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a first cross-sectional view of the present invention;

FIG. 4 is an enlarged view of a portion of the utility model at A in FIG. 3;

fig. 5 is a second cross-sectional view of the present invention.

In the figure: 1. a front fork connecting frame; 101. a hinge shaft; 102. a pedal connecting frame; 103. the cushion connecting frame; 104. a frame; 105. a rear wheel connecting frame; 106. a first reinforcing rib; 107. a second reinforcing rib; 108. a cushion connecting rod; 2. an arc-shaped plate; 201. a first arc-shaped rack; 202. A second arc-shaped rack; 203. a gear; 204. a first rotating lever; 205. a ratchet wheel; 206. a pawl; 207. a second rotating rod; 208. a spring; 209. a handle; 3. a feed screw nut; 301. and a screw rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions:

the utility model provides a bicycle frame with adjustable, including front fork link 1, the left end of front fork link 1 articulates through hinge 101 activity has running-board link 102, the left end fixedly connected with rear wheel link 105 of running-board link 102, the right-hand member upper portion fixedly connected with cushion link 103 of running-board link 102, the upside of cushion link 103 is equipped with cushion connecting rod 108, fixedly connected with frame 104 between the upper end of running-board link 102 and the lower extreme of cushion link 103, the upside of front fork link 1 is equipped with slewing mechanism, slewing mechanism is connected in order to realize its rotation with front fork link 1, be equipped with stop gear in the frame 104, the upside of cushion link 103 is equipped with elevating system, elevating system is connected in order to realize that it does up-and-down linear motion with cushion connecting rod 108.

In the embodiment of the utility model, when the bicycle is actually ridden, the upper half of the body of a user is connected with the cushion connecting rod 108, the arm is connected with the front fork connecting frame 1, the foot is connected with the pedal connecting frame 102, when the user needs to change the distance between the front fork connecting frame 1 and the cushion connecting rod 108 and the distance between the cushion connecting rod 108 and the pedal connecting frame 102 according to the body conditions such as height, arm length and the like of the user, or the distance between the front fork connecting frame 1 and the cushion connecting rod 108 is passively changed due to the replacement of tires with different sizes and specifications, the front fork connecting frame 1 can rotate to the left by taking the middle point of the hinge shaft 101 as the center of a circle to change the distance between the front fork connecting frame 1 and the cushion connecting rod 108 through the arranged rotating mechanism, the cushion connecting rod 108 can move up and down by the arranged lifting mechanism to change the distance between the cushion connecting rod 108 and the pedal connecting frame 102, the limiting mechanism arranged can limit the rotation of the front fork connecting frame 1 through opening and closing, and the front fork connecting frame 1 can only rotate when the limiting mechanism loosens the limiting mechanism, so that the situation that the front fork connecting frame 1 rotates left and right due to jolting in the riding process is avoided.

Referring to fig. 4, the rotating mechanism includes an arc plate 2, a first arc rack 201, a second arc rack 202, two gears 203, and two first rotating rods 204, wherein two rectangular grooves are respectively formed at the left end and the right end of the frame 104, the arc plate 2 is fixedly connected to the circumferential surface of the front fork connecting frame 1, the left end of the arc plate 2 movably penetrates through the left end of the frame 104 and extends leftwards, the first arc rack 201 and the second arc rack 202 are respectively fixedly connected to the upper end and the lower end of the arc plate 2, the two first rotating rods 204 are both rotatably connected between the front inner wall and the rear inner wall of the frame 104, the two gears 203 are respectively fixedly connected to the circumferential surface of the two first rotating rods 204, the gear 203 located at the upper side is engaged with the first arc rack 201 located at the lower side, and the gear 203 located at the lower side is engaged with the second arc rack 202.

In this embodiment: the tooth of first arc rack 201 is located its upside, the tooth of second arc rack 202 is located its downside, and two first bull stick 204 and two are located the upside of first arc rack 201 and the downside of second arc rack 202 respectively, arc 2 runs through the opening of the frame 104 left and right sides and crosses and avoid causing the resistance with frame 104 contact, when front fork link 1 takes place to rotate, arc 2, first arc rack 201 and second arc rack 202 also can use the mid point of hinge 101 to do circular motion as the centre of a circle, and then drive two gears 203 and rotate and its rotation opposite direction, and then drive two first bull sticks 204 and rotate with opposite direction, can realize the rotation of front fork link 1 and make its rotation more stable through the meshing between tooth and the tooth.

Referring to fig. 4, the limiting mechanism includes two ratchet wheels 205, two pawls 206, two second rotating rods 207 and two springs 208, the two second rotating rods 207 are respectively rotatably connected to the front and rear inner walls of the frame 104, the far ends of the two second rotating rods 207 respectively movably penetrate through the front and rear ends of the frame 104 and extend outward, the two springs 208 are respectively sleeved on the circumferential surfaces of the two second rotating rods 207, the far ends of the two springs 208 are respectively fixedly connected to the front and rear inner walls of the frame 104, the near ends of the two springs 208 are respectively fixedly connected to the circumferential surfaces of the two second rotating rods 207, the two ratchet wheels 205 are respectively fixedly connected to the circumferential surfaces of the two first rotating rods 204, the two pawls 206 are respectively fixedly connected to the circumferential surfaces of the two second rotating rods 207, and the two pawls 206 are respectively intermittently engaged with the two ratchet wheels 205.

In this embodiment: the direction of the teeth of the two ratchets 205 is the same, when the arc plate 2 rotates to the left, the gear 203 and the first rotating rod 204 on the lower side are driven to rotate, and then the ratchet 205 on the lower side is driven to rotate, and the pawl 206 on the lower side is continuously stirred to rotate to a small extent left and right, at this time, the pawl 206 on the lower side does not generate resistance to the rotation of the ratchet 205 on the lower side, and the rotation direction of the ratchet 205 on the upper side is opposite, so that the pawl 206 on the upper side is locked with the ratchet 205 on the upper side to prevent the rotation, and further the arc plate 2 rotates to the left, similarly, when the arc plate 2 rotates to the right, the pawl 206 on the lower side is locked with the ratchet 205 on the lower side to prevent the rotation, at this time, the front fork connecting frame 1 is fixed to be fixed and cannot be adjusted, when the front fork connecting frame 1 needs to rotate to the left, the second rotating rod 207 on the upper side can be rotated to the right, and at this time, the pawl 206 on the upper side can be completely separated from the ratchet 205 on the upper side to enable the normal rotation, when it is desired to rotate the front fork attachment 1 to the right, the second lower rotating rod 207 is rotated to the right, the lower pawl 206 is completely disengaged from the lower ratchet wheel 205 to allow normal rotation, and when the second rotating rods 207 are released, the pawls 206 are rotated back by the resilient action of the springs 208 to re-engage with the ratchet wheels 205.

Specifically, referring to fig. 5, the lifting mechanism includes a screw nut 3, a screw 301 and an empty groove, the empty groove is formed at the upper end of the cushion connecting frame 103, the screw 301 is fixedly connected to the lower end of the cushion connecting rod 108, the screw nut 3 is fixedly connected to the circumferential inner wall of the empty groove, and the screw nut 3 is in threaded connection with the circumferential surface of the screw 301.

In this embodiment: can drive lead screw 301 when rotating cushion connecting rod 108 and rotate, because screw-nut 3 is fixed, consequently lead screw 301 can drive cushion connecting rod 108 and reciprocate and realize going up and down, and the dead slot is one little big two circular slots and constitutes, and the circular slot of upside is hugged closely with the circumference surface of cushion connecting rod 108, can play limiting displacement to cushion connecting rod 108 and make it can only do up-and-down linear motion.

Specifically, referring to fig. 1, two first reinforcing ribs 106 are fixedly connected between the adjacent ends of the rear wheel connecting frame 105 and the pedal connecting frame 102, and a second reinforcing rib 107 is fixedly connected between the adjacent ends of the rear wheel connecting frame 105 and the cushion connecting frame 103.

In this embodiment: the two first reinforcing ribs 106 serve to reinforce the structural strength and stability between the rear wheel link 105 and the footboard link 102, and the second reinforcing ribs 107 serve to reinforce the structural strength and stability between the rear wheel link 105 and the seat cushion link 103.

Referring to fig. 2, the two second rotating rods 207 are fixedly connected with handles 209 at the ends far away from each other.

In this embodiment: the surface cover of two handles 209 is equipped with anti-skidding cover, can the person of facilitating the use rotate two second bull sticks 207 through two handles 209.

The working principle and the using process of the utility model are as follows: when a user needs to change the frame structure due to the body shape of the user or the replacement of tires with different sizes, the user can rotate the upper handle 209 rightwards to drive the upper second rotating rod 207 and the pawl 206 to rotate, so that the pawl 206 on the upper side is completely separated from the ratchet wheel 205, then the front fork connecting frame 1 is pulled to rotate leftwards around the hinge shaft 101 to shorten the distance from the upper body of the user to the handlebar, or the lower handle 209 is rotated rightwards first and then the front fork connecting frame 1 is pulled to rotate rightwards around the hinge shaft 101 to lengthen the distance from the upper body to the handlebar, and the cushion connecting rod 108 is rotated forwards and backwards to drive the cushion connecting rod 108 to move upwards and downwards along the cushion connecting frame 103 to shorten or lengthen the distance from the upper body of the user to the pedal; the device can freely adjust the distance from the handlebar to the upper body of a user and the distance from the cushion to the pedal to adapt to the body shapes of different users or the change of the frame structure caused by tires of different sizes so as to enhance the comfort degree during riding and the structural stability of the bicycle body.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable bicycle frame, includes front fork link (1), its characterized in that: the left end of the front fork connecting frame (1) is movably hinged with a pedal connecting frame (102) through a hinge shaft (101), the left end of the pedal connecting frame (102) is fixedly connected with a rear wheel connecting frame (105), the upper part of the right end of the pedal connecting frame (102) is fixedly connected with a cushion connecting frame (103), a cushion connecting rod (108) is arranged on the upper side of the cushion connecting frame (103), a frame (104) is fixedly connected between the upper end of the pedal connecting frame (102) and the lower end of the cushion connecting frame (103), the upper side of the front fork connecting frame (1) is provided with a rotating mechanism which is connected with the front fork connecting frame (1) to realize the rotation thereof, a limiting mechanism is arranged in the frame (104), a lifting mechanism is arranged on the upper side of the cushion connecting frame (103), the lifting mechanism is connected with a cushion connecting rod (108) to realize the up-and-down linear motion of the lifting mechanism.

2. An adjustable bicycle frame as defined in claim 1, wherein: the rotating mechanism comprises an arc-shaped plate (2), a first arc-shaped rack (201), a second arc-shaped rack (202), two gears (203) and two first rotating rods (204), two rectangular grooves are respectively arranged at the left end and the right end of the frame (104), the arc-shaped plate (2) is fixedly connected to the circumferential surface of the front fork connecting frame (1), and the left end of the arc-shaped plate (2) movably penetrates through the left end of the frame (104) and extends leftwards, first arc rack (201) and second arc rack (202) are fixed connection in the upper and lower both ends of arc (2) respectively, two first bull stick (204) all rotates to be connected between the front and back inner wall of frame (104), two gear (203) is fixed connection respectively in the circumferential surface of two first bull sticks (204), is located the upside gear (203) meshes with first arc rack (201) mutually, is located the downside gear (203) meshes with second arc rack (202) mutually.

3. An adjustable bicycle frame as defined in claim 2, wherein: the limiting mechanism comprises two ratchet wheels (205), two pawls (206), two second rotating rods (207) and two springs (208), the two second rotating rods (207) are respectively rotatably connected to the front and rear inner walls of the frame (104), far ends of the two second rotating rods (207) respectively movably penetrate through the front and rear ends of the frame (104) and extend outwards, the two springs (208) are respectively sleeved on the circumferential surfaces of the two second rotating rods (207), far ends of the two springs (208) are respectively fixedly connected to the front and rear inner walls of the frame (104), close ends of the two springs (208) are respectively fixedly connected to the circumferential surfaces of the two second rotating rods (207), the two ratchet wheels (205) are respectively fixedly connected to the circumferential surfaces of the two first rotating rods (204), and the two pawls (206) are respectively fixedly connected to the circumferential surfaces of the two second rotating rods (207), and the two pawls (206) are intermittently engaged with the two ratchet gears (205), respectively.

4. An adjustable bicycle frame as defined in claim 3, wherein: elevating system includes screw-nut (3), lead screw (301) and dead slot, the upper end in cushion link (103) is seted up to the dead slot, lead screw (301) fixed connection is in the lower extreme of cushion connecting rod (108), screw-nut (3) fixed connection is in the circumference inner wall of dead slot, and screw-nut (3) threaded connection is in the circumferential surface of lead screw (301).

5. An adjustable bicycle frame as defined in claim 4, wherein: two first reinforcing ribs (106) are fixedly connected between the close ends of the rear wheel connecting frame (105) and the pedal connecting frame (102), and a second reinforcing rib (107) is fixedly connected between the close ends of the rear wheel connecting frame (105) and the cushion connecting frame (103).

6. An adjustable bicycle frame as defined in claim 5, wherein: the far ends of the two second rotating rods (207) are fixedly connected with handles (209).