Vibration reduction type bicycle support structure

Abstract

The utility model discloses a vibration reduction type bicycle support structure, which relates to the technical field of backseat support design, and comprises a backseat support main body, a backseat fixed mounting unit and a backseat extension unit, the right side surface of the backseat support main body is fixedly connected with a backseat support fixing block through a connecting cross rod; the rear seat support fixing blocks are fixedly connected with a bicycle frame, the auxiliary supporting rods are fixedly connected to the surfaces of the lower sides of the rear seat support bodies, the two rear seat support bodies are fixedly connected with the bicycle frame, and the surfaces of the corresponding sides of the two auxiliary supporting rods are connected with the arc-shaped protective covers through the connecting supporting rods correspondingly. The arc-shaped protective cover is arranged on the lower side of the rear seat support body, when the rear seat is used for bearing goods, the length of the rear seat can be adjusted, more goods can be carried, the carried goods are fixed more firmly, and vibration or shaking of the goods is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rear seat bracket design, in particular to a vibration reduction type bicycle bracket structure. Background Art

[0002] Bicycles, also known as bicycles or bikes, are usually two-wheeled small land vehicles. After people ride on the bicycle, they use pedals as power, and are green and environmentally friendly means of transportation. There are many types of bicycles, including single-person bicycles, double-person bicycles, and multi-person bicycles. They can also carry goods or people on the back seat. In order to fix the back seat, a vibration-damping bicycle support structure is required.

[0003] The existing vibration-damping bicycle support structure has the problem that the length of the rear seat cannot be adjusted when the rear seat is used to carry goods or people, and it is not possible to carry more items or fat adults. In addition, when carrying goods, the goods are not firmly fixed, and the goods vibrate and shake greatly with the bicycle, which affects the experience and the quality of the goods. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a vibration-damping bicycle support structure. When the rear seat is used to carry goods or people, the length of the rear seat can be adjusted, and more goods can be carried. When carrying goods, the carried goods can be fixed more firmly, vibration and shaking can be reduced, and the experience can be improved, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vibration-reducing bicycle support structure comprises a rear seat support body, a rear seat fixing and installation unit, and a rear seat extension unit.

[0007] Rear seat bracket body: the right side surface is fixedly connected to the rear seat bracket fixing block through a connecting cross bar, the rear seat bracket fixing block is fixedly connected to the bicycle frame, an auxiliary support rod is fixedly connected to the lower side surface of the rear seat bracket body, the two rear seat bracket bodies are fixedly connected to the bicycle frame, and the side surfaces corresponding to the two auxiliary support rods are respectively connected to an arc-shaped protective cover through the connecting support rod, the arc-shaped protective cover is arranged at the lower side of the rear seat bracket body, and a rear seat fixing installation unit is arranged on the upper side surface of the rear seat bracket body.

[0008] The rear seat fixed installation unit includes a rear seat installation plate, a fixed rear seat, a binding belt retractor and a connecting fixing buckle; the rear seat installation plate is movably connected to the rear seat bracket body through a shock-absorbing damper, the fixed rear seat is located at the upper part of the rear seat installation plate, and the binding belt retractor and the connecting fixing buckle are respectively located on both sides of the rear seat installation plate.

[0009] The rear seat extension unit comprises an extended rear seat plate and an active connection seat, the extended rear seat plate is movably connected to the rear seat mounting plate, and the extended rear seat plate is detachably connected to the active connection seat at the bottom of the rear seat bracket body through a supporting telescopic rod.

[0010] Furthermore, the rear seat extension unit includes a guide slide column, a movable slider, an extended rear seat plate and a fixed baffle. In the rear seat fixed installation unit, a rectangular groove is provided on the left side surface of the rear seat mounting plate, a rectangular hole is provided in the rectangular groove, a slide groove is provided on the bottom end surface of the rectangular hole, the slide groove extends to the lower side of the rear seat mounting plate, a guide slide column is fixedly connected in the slide groove, a movable slider is slidably connected in the slide groove, the slide hole on the movable slider is slidably connected on the corresponding guide slide column, an extended rear seat plate is fixedly connected on the upper side surface of the movable slider, the extended rear seat plate is arranged in the rectangular hole, a friction pattern is provided on the upper side surface of the extended rear seat plate, a fixed baffle is fixedly connected on the left side surface of the extended rear seat plate, the fixed baffle is fixedly clamped with the corresponding clamping rectangular groove, and the left side surface of the fixed baffle is movably connected to the pulling armrest through a movable pin.

[0011] The rear seat bracket body is used to support the fixing device, the rear seat bracket fixing block is used to connect to the bicycle, the rear seat fixing installation unit is used to fix and install the rear seat, the guide slide column is used to make the movable slider move more stably, the movable slider moves to drive the extended rear seat plate to move, the extended rear seat plate is used to extend the rear seat to hold more cargo, and the fixed baffle is used to fix the extended rear seat plate for extended use.

[0012] Furthermore, the rear seat extension unit also includes a supporting telescopic rod, a fixed snap-fit ​​buckle, a supporting baffle and a movable connecting seat. A snap-fit ​​limiting groove is provided on the lower side surface of the extended rear seat plate, and the snap-fit ​​limiting groove is movably connected to one end of the supporting telescopic rod through a movable seat. A fixed snap-fit ​​buckle is fixedly connected to a position on the right side of the movable seat in the snap-fit ​​limiting groove, and the fixed snap-fit ​​buckle is fixedly connected to the corresponding supporting telescopic rod. A supporting baffle is fixedly connected to the lower side surface of the rear seat bracket body on a side away from the rear seat bracket fixing block, a movable connecting seat is fixedly connected to the left side surface of the supporting baffle, a snap-fit ​​plate is fixedly connected to the movable connecting seat, the other end of the supporting telescopic rod is fixedly connected to the corresponding snap-fit ​​plate by a bolt, and the supporting telescopic rod is movably connected to the supporting baffle through the movable connecting seat.

[0013] The supporting telescopic rod can be adjusted in length to facilitate supporting the extended rear seat plate. The fixed snap buckle is used to fix and clamp the supporting telescopic rod when not in use. The supporting baffle is used to fix the movable connecting seat. The snap plate on the movable connecting seat is used to connect the supporting telescopic rod to facilitate supporting the extended rear seat plate, so that the extended rear seat plate can be fixed more stably.

[0014] Furthermore, the rear seat extension unit also includes a rectangular clamping block and a fixed plug column. The lower surface of the rear seat mounting plate in the rear seat fixed mounting unit is located on the left and right sides of the slide groove, and is fixedly connected to a rectangular clamping block respectively. The two rectangular clamping blocks are respectively provided with clamping circular holes, and each clamping circular hole passes through the left and right sides of the rectangular clamping block respectively. The lower surface of the movable slider is fixedly connected to the fixed plug column through the plug column fixing seat, and the fixed plug column is fixedly clamped to the clamping circular holes on the corresponding rectangular clamping blocks.

[0015] The fixing pin is used to clamp the rectangular clamping block, so as to fix the extended rear seat plate after adjusting the extended rear seat plate for use.

[0016] Furthermore, the rear seat fixed installation unit includes a limiting cylinder, a shock-absorbing damper and a rear seat mounting plate. The upper surface of the rear seat bracket body is fixedly connected to four limiting cylinders in a rectangular array. The upper surface of each limiting cylinder is respectively provided with a clamping circular hole. A shock-absorbing damper is respectively fixedly connected in each clamping circular hole. The upper end surfaces of the four shock-absorbing dampers are fixedly connected to a rear seat mounting plate. Each shock-absorbing damper is respectively provided with a shock-absorbing spring. The four corners of the upper surface of the rear seat mounting plate are respectively provided with cylindrical limiting grooves.

[0017] The limiting cylinder is used to fix the shock-absorbing damper, and the shock-absorbing damper is used to provide shock-absorbing protection when in use. The rear seat mounting plate is used to fix the clamping cylinder, so as to facilitate use and make the cargo fixation more stable.

[0018] Furthermore, the rear seat fixing installation unit also includes a clamping cylinder and a fixed rear seat. A clamping cylinder is fixedly clamped in each of the four cylindrical limiting grooves on the rear seat mounting plate. The upper surfaces of the four clamping cylinders are fixedly connected to a fixed rear seat, and a seat cushion is provided on the upper surface of the fixed rear seat.

[0019] The clamping cylinder is used for fixing the fixed rear seat, and the fixed rear seat is used for placing goods or carrying people.

[0020] Furthermore, the rear seat fixed installation unit also includes a binding strap retractor and a connecting fixing buckle. The front side surface of the rear seat mounting plate is fixedly connected to a binding strap retractor, and the rear side surface of the rear seat mounting plate is fixedly connected to a connecting fixing buckle at a position corresponding to the binding strap retractor. The binding strap on the binding strap retractor is fixedly connected to the connecting fixing buckle via a clamping block.

[0021] The cargo strap retractor is used to secure the cargo, and the connecting buckle is used to fix the strap on the strap retractor, so as to facilitate fixing the cargo on the back seat.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. A vibration-damping bicycle support structure has the following advantages: a rear seat extension unit is provided, a sliding column is used to make the movement of the movable slider more stable, the movement of the movable slider drives the movement of the extended rear seat plate, the extended rear seat plate is used to extend the rear seat to hold more goods, the fixed baffle is used to fix the extended rear seat plate, the supporting telescopic rod can be adjusted in length, so as to facilitate the support of the extended rear seat plate, the fixed clamping buckle is used to fix the supporting telescopic rod when not in use, the supporting baffle is used to fix the movable connecting seat, the clamping plate on the movable connecting seat is used to connect the supporting telescopic rod, so as to facilitate the support of the extended rear seat plate, so as to make the extended rear seat plate more stably fixed, the fixed plug column is used to clamp the rectangular clamping block, so as to fix the extended rear seat plate after adjusting the extended rear seat plate, so as to extend the rear seat, which is convenient for carrying more goods or fatter adults to ride.

[0024] 2. A vibration-damping bicycle support structure has the following advantages: a rear seat fixing installation unit is provided, a limiting cylinder is used to fix a shock-absorbing damper, the shock-absorbing damper is used to provide shock-absorbing protection when in use, a rear seat mounting plate is used to fix the clamping cylinder, so as to facilitate use, the clamping cylinder is used to fix the fixed rear seat, the fixed rear seat is used to hold goods or carry people, the binding belt retractor adopts a cargo binding belt retractor to fix the goods, and the connecting fixing buckle is used to fix the binding belt on the binding belt retractor, so as to facilitate fixing the goods on the rear seat, reduce vibration and shaking of the goods, fix the goods, and avoid affecting the quality of the goods.

[0025] 3. A vibration-damping bicycle support structure has the following advantages: when the rear seat is used to carry goods, the extension length of the rear seat can be adjusted, so that more goods can be carried. When carrying goods, the carried items can be fixed more firmly, thereby improving the consumer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a three-dimensional structural schematic diagram of a vibration-reducing bicycle support structure.

[0027] Figure 2 The utility model is a partial cross-sectional schematic diagram of a vibration-reducing bicycle support structure from a three-dimensional perspective.

[0028] Figure 3 It is a partial cross-sectional schematic diagram of another three-dimensional viewing angle of a vibration-reducing bicycle support structure of the utility model.

[0029] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0030] Numbers in the figure:

[0031] 1 rear seat bracket body, 2 rear seat bracket fixing block, 3 rear seat fixing installation unit, 31 limit cylinder, 32 shock absorber, 33 rear seat mounting plate, 34 clamping cylinder, 35 fixed rear seat, 36 binding belt retractor, 37 connecting fixing buckle, 4 rear seat extension unit, 41 guide slide column, 42 movable slide block, 43 extended rear seat plate, 44 fixed baffle, 45 supporting telescopic rod, 46 fixed clamping buckle, 47 supporting baffle, 48 movable connecting seat, 49 rectangular clamping block, 410 fixed plug column. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-4 , this embodiment provides a technical solution:

[0034] A vibration-damping bicycle support structure comprises a rear seat support body 1, a rear seat fixing and mounting unit 3, and a rear seat extension unit 4;

[0035] Rear seat bracket body 1: the right side surface is fixedly connected to the rear seat bracket fixing block 2 through a connecting cross bar, the rear seat bracket fixing block 2 is fixedly connected to the bicycle frame, an auxiliary support rod is fixedly connected to the lower side surface of the rear seat bracket body 1, the two rear seat bracket bodies 1 are fixedly connected to the bicycle frame, and the side surfaces corresponding to the two auxiliary support rods are respectively connected to an arc-shaped protective cover through the connecting support rod, the arc-shaped protective cover is arranged at the lower side of the rear seat bracket body 1, and a rear seat fixing installation unit 3 is arranged on the upper side surface of the rear seat bracket body 1.

[0036] like Figure 3 , 4 As shown, the rear seat fixed installation unit 3 includes a rear seat installation plate 33, a fixed rear seat 35, a binding belt retractor 36 and a connecting fixing buckle 37; the rear seat installation plate 33 is movably connected to the rear seat bracket body 1 through a shock absorbing damper 32, the fixed rear seat 35 is located at the upper part of the rear seat installation plate 33, and the binding belt retractor 36 and the connecting fixing buckle 37 are respectively located on both sides of the rear seat installation plate 33.

[0037] like Figure 3 , 4 As shown, the rear seat extension unit 4 includes an extended rear seat plate 43 and a movable connecting seat 48. The extended rear seat plate 43 is movably connected to the rear seat mounting plate 33, and the extended rear seat plate 43 is detachably connected to the movable connecting seat 48 at the bottom of the rear seat bracket body 1 through a supporting telescopic rod 45.

[0038] like Figure 3 , 4 As shown, the rear seat extension unit 4 includes a guide slide post 41, a movable slider 42, an extended rear seat plate 43 and a fixed baffle 44. A clamping rectangular groove is provided on the left side surface of the rear seat mounting plate 33 in the rear seat fixed mounting unit 3, a rectangular hole is provided in the rectangular groove, a slide groove is provided on the bottom end surface of the rectangular hole, and the slide groove extends to the lower side of the rear seat mounting plate 33, a guide slide post 41 is fixedly connected in the slide groove, a movable slider 42 is slidably connected in the slide groove, the slide hole on the movable slider 42 is slidably connected on the corresponding guide slide post 41, an extended rear seat plate 43 is fixedly connected on the upper side surface of the movable slider 42, the extended rear seat plate 43 is arranged in the rectangular hole, a friction pattern is provided on the upper side surface of the extended rear seat plate 43, a fixed baffle 44 is fixedly connected on the left side surface of the extended rear seat plate 43, the fixed baffle 44 is fixedly clamped with the corresponding clamping rectangular groove, and the left side surface of the fixed baffle 44 is movably connected to the pulling armrest through a movable pin.

[0039] The rear seat bracket body 1 is used to support the fixing device, the rear seat bracket fixing block 2 is used to connect to the bicycle, the rear seat fixing installation unit 3 is used to fix and install the rear seat, the guide slide column 41 is used to make the movable slider 42 move more stably, the movable slider 42 moves to drive the extended rear seat plate 43 to move, the extended rear seat plate 43 is used to extend the rear seat to hold more goods, and the fixed baffle 44 is used to fix the extended rear seat plate 43 for extended use.

[0040] like Figure 4 As shown, the rear seat extension unit 4 also includes a supporting telescopic rod 45, a fixed snap-fit ​​buckle 46, a supporting baffle 47 and a movable connecting seat 48. A snap-fit ​​limiting groove is provided on the lower side surface of the extended rear seat plate 43, and the snap-fit ​​limiting groove is movably connected with one end of the supporting telescopic rod 45 through a movable seat 1. A fixed snap-fit ​​buckle 46 is fixedly connected to a position on the right side of the movable seat 1 in the snap-fit ​​limiting groove, and the fixed snap-fit ​​buckle 46 is fixedly snapped with the corresponding supporting telescopic rod 45. A supporting baffle 47 is fixedly connected to the lower side surface of the rear seat bracket body 1 on a side away from the rear seat bracket fixing block 2, and a movable connecting seat 48 is fixedly connected to the left side surface of the supporting baffle 47, and a snap-fit ​​plate is fixedly connected to the movable connecting seat 48. The other end of the supporting telescopic rod 45 is fixedly snapped with the corresponding snap-fit ​​plate by a bolt, and the supporting telescopic rod 45 is movably connected to the supporting baffle 47 through the movable connecting seat 48.

[0041] The supporting telescopic rod 45 can be adjusted in length to facilitate supporting the extended rear seat plate 43. The supporting telescopic rod 45 is an existing mature product. The fixed snap-fit ​​buckle 46 is used to fix and clamp the supporting telescopic rod 45 when not in use. The supporting baffle 47 is used to fix the movable connecting seat 48. The snap-fit ​​plate on the movable connecting seat 48 is used to connect the supporting telescopic rod 45, so as to facilitate supporting the extended rear seat plate 43, so as to make the extended rear seat plate 43 more stably fixed.

[0042] like Figure 3 , 4 As shown, the rear seat extension unit 4 also includes a rectangular clamping block 49 and a fixed plug 410. The lower surface of the rear seat mounting plate 33 in the rear seat fixing unit 3 is located at the left and right sides of the slide groove and is fixedly connected to a rectangular clamping block 49 respectively. The two rectangular clamping blocks 49 are respectively provided with clamping circular holes, and each clamping circular hole passes through the left and right sides of the rectangular clamping block 49 respectively. The lower surface of the movable slider 42 is fixedly connected to the fixed plug 410 through a plug fixing seat, and the fixed plug 410 is fixedly clamped with the clamping circular holes on the corresponding rectangular clamping blocks 49.

[0043] The fixing pin 410 is used to clamp the rectangular clamping block 49, so as to fix the extended rear seat plate 43 after adjusting the extended rear seat plate 43 for use.

[0044] like Figure 1 , 2 As shown, the rear seat fixed installation unit 3 includes a limiting cylinder 31, a shock-absorbing damper 32 and a rear seat mounting plate 33. The upper surface of the rear seat bracket body 1 is fixedly connected to four limiting cylinders 31 in a rectangular array. The upper surface of each limiting cylinder 31 is respectively provided with a clamping circular hole, and a shock-absorbing damper 32 is respectively fixedly connected in each clamping circular hole. The upper end surfaces of the four shock-absorbing dampers 32 are fixedly connected to a rear seat mounting plate 33. Each shock-absorbing damper 32 is respectively provided with a shock-absorbing spring, and the upper surface of the rear seat mounting plate 33 is respectively provided with cylindrical limiting grooves at the four corners.

[0045] The limiting cylinder 31 is used to fix the shock absorbing damper 32, and the shock absorbing damper 32 is used to provide shock absorbing protection when in use. The rear seat mounting plate 33 is used to fix the clamping cylinder 34, so as to facilitate use and make the cargo fixation more stable.

[0046] like Figure 2 As shown, the rear seat fixing installation unit 3 also includes a clamping cylinder 34 and a fixed rear seat 35. A clamping cylinder 34 is fixedly clamped in each of the four cylindrical limiting grooves on the rear seat mounting plate 33. The upper side surfaces of the four clamping cylinders 34 are fixedly connected to a fixed rear seat 35. A seat cushion is provided on the upper side surface of the fixed rear seat 35.

[0047] The clamping cylinder 34 is used to fix the fixed rear seat 35, and the fixed rear seat 35 is used to hold goods or carry people.

[0048] like Figure 1 , 2 As shown, the rear seat fixing installation unit 3 also includes a binding strap retractor 36 and a connecting fixing buckle 37. The front side surface of the rear seat mounting plate 33 is fixedly connected to a binding strap retractor 36, and the rear side surface of the rear seat mounting plate 33 is located at a position corresponding to the binding strap retractor 36 and is fixedly connected to a connecting fixing buckle 37. The binding strap on the binding strap retractor 36 is fixedly connected to the connecting fixing buckle 37 via a clamping block.

[0049] The lashing belt retractor 36 uses a cargo lashing belt retractor to fix the cargo, and the connecting fixing buckle 37 is used to fix the lashing belt on the lashing belt retractor 36, so as to facilitate fixing the cargo on the rear seat to fix the cargo.

[0050] The working principle of a vibration-reducing bicycle support structure provided by the utility model is as follows:

[0051] First, the limiting cylinder 31 is used to fix the shock-absorbing damper 32, and the shock-absorbing damper 32 is used for shock-absorbing protection when in use. The rear seat mounting plate 33 is used to fix the clamping cylinder 34 for easy use. The clamping cylinder 34 is used to fix the fixed rear seat 35, and the fixed rear seat 35 is used to hold goods or carry people.

[0052] The lashing belt retractor 36 uses a cargo lashing belt retractor to fix the cargo, and the connecting fixing buckle 37 is used to fix the lashing belt on the lashing belt retractor 36, so as to facilitate the cargo to be fixed on the rear seat for use. At the same time, the sliding column 41 can be used to make the movable slider 42 move more stably. The movement of the movable slider 42 drives the extended rear seat plate 43 to move. The extended rear seat plate 43 is used to extend the rear seat to hold more cargo.

[0053] The fixed baffle 44 is used to fix the extended rear seat plate 43, the supporting telescopic rod 45 can be adjusted in length, so as to facilitate the support of the extended rear seat plate 43, the fixed snap-fit ​​buckle 46 is used to fix and clamp the supporting telescopic rod 45 when not in use, the supporting baffle 47 is used to fix the movable connecting seat 48, and the snap-fit ​​plate on the movable connecting seat 48 is used to connect the supporting telescopic rod 45, so as to facilitate the support of the extended rear seat plate 43, so that the extended rear seat plate 43 can be fixed more stably.

[0054] The fixing pin 410 is used to clamp the rectangular clamping block 49, so as to fix the extended rear seat plate 43 after adjusting the extended rear seat plate 43, so as to extend the rear seat for use.

[0055] The extended length of the rear seat plate 43 relative to the rear seat mounting plate 33 is determined according to the length of the cargo, or personal habits and preferences, and the length of the supporting telescopic rod 45 is adjusted accordingly, so that the supporting telescopic rod 45 is flipped down and moved out from the fixed snap buckle 46, and then connected to the movable connecting seat 48 to form a bottom support for the end of the extended rear seat plate 43, thereby enhancing the structural strength.

[0056] When the goods are placed on the fixed rear seat 35, the fixed rear seat 35 is subjected to downward pressure, which is transmitted to the rear seat mounting plate 33, and the shock absorbing damper 32 is compressed to form an elastic support. When the bicycle encounters bumpy road conditions, the elastic support formed by the shock absorbing damper 32 can reduce the bumps transmitted to the fixed rear seat 35 to a certain extent, thereby reducing the vibration or shaking of the goods.

[0057] In addition, the connecting fixing buckle 37 is used to fix the binding belt on the binding belt retractor 36, and the goods are wrapped and fixed by the binding belt, which can prevent the goods from falling from the fixed rear seat 35 and reduce the vibration or shaking of the goods.

[0058] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vibration-damping bicycle support structure, characterized in that: It comprises a rear seat support body (1), a rear seat fixing and installation unit (3), and a rear seat extension unit (4); The rear seat support body (1): the right side surface is fixedly connected to the rear seat support fixing block (2) through a connecting cross bar, the rear seat support fixing block (2) is fixedly connected to the bicycle frame, the lower side surface of the rear seat support body (1) is fixedly connected to an auxiliary support rod, the two rear seat support bodies (1) are fixedly connected to the bicycle frame, the side surfaces corresponding to the two auxiliary support rods are respectively connected to an arc-shaped protective cover through a connecting support rod, the arc-shaped protective cover is arranged at the lower side of the rear seat support body (1), and the upper side surface of the rear seat support body (1) is provided with a rear seat fixing installation unit (3); The rear seat fixing and mounting unit (3) comprises a rear seat mounting plate (33), a fixed rear seat (35), a binding belt retractor (36) and a connecting and fixing buckle (37); the rear seat mounting plate (33) is movably connected to the rear seat bracket body (1) via a shock absorbing damper (32); the fixed rear seat (35) is located on the upper part of the rear seat mounting plate (33); the binding belt retractor (36) and the connecting and fixing buckle (37) are respectively located on two sides of the rear seat mounting plate (33); The rear seat extension unit (4) comprises an extended rear seat plate (43) and a movable connecting seat (48), wherein the extended rear seat plate (43) is movably connected to the rear seat mounting plate (33), and the extended rear seat plate (43) is detachably connected to the movable connecting seat (48) at the bottom of the rear seat bracket body (1) via a supporting telescopic rod (45).

2. A vibration-damping bicycle support structure according to claim 1, characterized in that: The rear seat extension unit (4) comprises a guide slide post (41), a movable slide block (42) and a fixed baffle plate (44); a rectangular groove is provided on the left surface of the rear seat mounting plate (33) in the rear seat fixed mounting unit (3); a rectangular hole is provided in the rectangular groove; a slide groove is provided on the bottom surface of the rectangular hole; the slide groove extends to the lower side of the rear seat mounting plate (33); a guide slide post (41) is fixedly connected in the slide groove; a movable slide block (42) is slidably connected in the slide groove; a slide on the movable slide block (42) is The hole is slidably connected on the corresponding guide slide column (41); the upper surface of the movable slide block (42) is fixedly connected to an extended rear seat plate (43); the extended rear seat plate (43) is arranged in the rectangular hole; the upper surface of the extended rear seat plate (43) is provided with a friction pattern; the left surface of the extended rear seat plate (43) is fixedly connected to a fixed baffle plate (44); the fixed baffle plate (44) is fixedly engaged with the corresponding engaging rectangular groove; the left surface of the fixed baffle plate (44) is movably connected to the pulling armrest through a movable pin shaft.

3. A vibration-damping bicycle support structure according to claim 2, characterized in that: The rear seat extension unit (4) further comprises a fixed snap-fit ​​buckle (46) and a support baffle (47); a snap-fit ​​limiting groove is provided on the lower surface of the extended rear seat plate (43); the snap-fit ​​limiting groove is movably connected to one end of the support telescopic rod (45) through a movable seat one; a fixed snap-fit ​​buckle (46) is fixedly connected to a position on the right side of the movable seat one in the snap-fit ​​limiting groove; the fixed snap-fit ​​buckle (46) is fixedly snap-fitted to the corresponding support telescopic rod (45); a support baffle (47) is fixedly connected to the lower surface of the rear seat bracket body (1) at a side away from the rear seat bracket fixing block (2); a movable connecting seat (48) is fixedly connected to the left surface of the support baffle (47); a snap-fit ​​plate is fixedly connected to the movable connecting seat (48); the other end of the support telescopic rod (45) is fixedly snap-fitted to the corresponding snap-fit ​​plate through a bolt; the support telescopic rod (45) is movably connected to the support baffle (47) through the movable connecting seat (48).

4. A vibration-damping bicycle support structure according to claim 3, characterized in that: The rear seat extension unit (4) further comprises a rectangular clamping block (49) and a fixed plug post (410); the lower side surface of the rear seat mounting plate (33) in the rear seat fixed mounting unit (3) is located at the left and right sides of the slide groove and is respectively fixedly connected to a rectangular clamping block (49); the two rectangular clamping blocks (49) are respectively provided with clamping circular holes, and each clamping circular hole respectively penetrates the left and right sides of the rectangular clamping block (49); the lower side surface of the movable slider (42) is fixedly connected to the fixed plug post (410) through a plug post fixing seat, and the fixed plug post (410) is fixedly clamped to the clamping circular hole on the corresponding rectangular clamping block (49).

5. The vibration-damping bicycle support structure according to claim 1, characterized in that: The rear seat fixing installation unit (3) comprises a limiting cylinder (31), and the upper side surface of the rear seat bracket body (1) is fixedly connected to four limiting cylinders (31) in a rectangular array, and the upper side surface of each limiting cylinder (31) is respectively provided with a clamping circular hole, and a shock absorbing damper (32) is respectively fixedly connected in each clamping circular hole, and the upper end surfaces of the four shock absorbing dampers (32) are fixedly connected to a rear seat installation plate (33), and each shock absorbing damper (32) is respectively provided with a shock absorbing spring, and the upper side surface of the rear seat installation plate (33) is respectively provided with cylindrical limiting grooves at four corners.

6. A vibration-damping bicycle support structure according to claim 5, characterized in that: The rear seat fixing installation unit (3) further comprises a clamping cylinder (34), and a clamping cylinder (34) is fixedly clamped in each of the four cylindrical limiting grooves on the rear seat installation plate (33). The upper side surfaces of the four clamping cylinders (34) are fixedly connected to a fixed rear seat (35), and the upper side surface of the fixed rear seat (35) is provided with a seat cushion.

7. A vibration-damping bicycle support structure according to claim 6, characterized in that: The front side surface of the rear seat mounting plate (33) is fixedly connected to a binding belt retractor (36), and the rear side surface of the rear seat mounting plate (33) is fixedly connected to a connecting and fixing buckle (37) at a position corresponding to the binding belt retractor (36), and the binding belt on the binding belt retractor (36) is fixedly connected to the connecting and fixing buckle (37) via a clamping block.

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