CN220948299U

CN220948299U - Telescopic bicycle frame

Info

Publication number: CN220948299U
Application number: CN202322750125.3U
Authority: CN
Inventors: 孙西平
Original assignee: Shenzhen Speed Special Vehicle Industry Development Co ltd
Current assignee: Shenzhen Speed Special Vehicle Industry Development Co ltd
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-05-14
Anticipated expiration: 2033-10-13

Abstract

The utility model provides a telescopic bicycle frame, which comprises a bicycle frame, wherein the middle part of the bicycle frame is provided with a central tube, and the top end of the central tube is sleeved with a supporting tube; the inner side of the top end of the central tube is fixedly provided with a threaded sleeve, the threaded sleeve is internally connected with a threaded rod, the bottom end of the threaded rod is rotatably provided with a sliding block, the sliding block is mounted on the inner side of the central tube in a fitting manner, the top end of the threaded rod is rotatably connected with a fixing seat, and the fixing seat is fixedly mounted in the supporting tube; an adjusting handle is horizontally arranged on one side of the supporting tube, and one end of the adjusting handle is in transmission connection with the threaded rod. According to the utility model, the supporting tube is driven to move up and down by the cooperation of the driving bevel gear, the driven bevel gear, the connecting shaft and the threaded rod, so that a rider can automatically adjust the height of the cushion without getting off the bicycle, the operation is convenient, and the practicability is higher.

Description

Telescopic bicycle frame

Technical Field

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

Background

The bicycle becomes the most main riding tool for people by virtue of the characteristics of small volume, light weight, low price, convenience and rapidness, and is increasingly favored by people as a pollution-free, noise-free, light and energy-saving transportation tool along with the development of the times and the enhancement of the consciousness of people.

When the existing bicycle saddle is adjusted in height, the fasteners are required to be screwed, the installation shaft at the bottom of the saddle is free from constraint, then the saddle is held by two hands for adjustment, the fasteners are required to be screwed after adjustment is finished, the process is time-consuming and labor-consuming, and if the adjustment is improper, a rider needs to get off the bicycle again for adjustment operation, and the operation process is complex.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a retractable bicycle frame which has a more practical value.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a telescopic bicycle frame, which is achieved by the following specific technical means:

A telescopic bicycle frame comprises a bicycle frame, wherein a central tube is arranged in the middle of the bicycle frame, and a supporting tube is sleeved at the top end of the central tube; the inner side of the top end of the central tube is fixedly provided with a threaded sleeve, the threaded sleeve is internally connected with a threaded rod, the bottom end of the threaded rod is rotatably provided with a sliding block, the sliding block is mounted on the inner side of the central tube in a fitting manner, the top end of the threaded rod is rotatably connected with a fixing seat, and the fixing seat is fixedly mounted in the supporting tube; an adjusting handle is horizontally arranged on one side of the supporting tube, and one end of the adjusting handle is in transmission connection with the threaded rod.

Further, the central axis of the threaded sleeve and the threaded rod coincides with the central axis of the central tube.

Furthermore, two groups of limiting strips are symmetrically arranged in the supporting tube, and limiting sliding grooves which are in sliding connection with the limiting strips are arranged on the outer side of the central tube.

Further, the connecting shaft is installed on the top of fixing base, just the bottom of connecting shaft and the top fixed connection of threaded rod, the top of connecting shaft is connected with the interior top of stay tube through the bearing.

Further, a driven bevel gear is fixedly arranged on the outer side of the connecting shaft, a driving bevel gear is meshed with one side of the driven bevel gear, a driving shaft is fixedly arranged at the center of the driving bevel gear, and one end of the driving shaft is fixedly connected with one end of the adjusting handle.

Further, the supporting tube is a stainless steel tube, and the top end of the supporting tube is used for being connected with the bicycle saddle.

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

1. According to the utility model, the supporting tube is driven to move up and down by the cooperation of the driving bevel gear, the driven bevel gear, the connecting shaft and the threaded rod, so that a rider can automatically adjust the height of the cushion without getting off the bicycle, the operation is convenient, and the practicability is higher.

2. According to the utility model, the adjusting handle is arranged on the outer side of the supporting tube, so that a rider can conveniently hold the adjusting handle easily, and the phenomenon that the rider cannot reach the adjusting handle after the cushion is heightened is avoided.

Drawings

FIG. 1 is a schematic view of a main structure device of the present utility model.

Fig. 2 is a schematic view of a partial construction device according to the present utility model.

Fig. 3 is a schematic diagram of a partial structure device of the present utility model.

Fig. 4 is a schematic view of a partial construction device according to the present utility model.

In the figure, the correspondence between the component names and the drawing numbers is:

1. A bicycle frame; 2. a central tube; 3. supporting the pipe; 4. adjusting the handle; 5. a drive shaft; 6. a drive bevel gear; 7. a driven bevel gear; 8. a connecting shaft; 9. a fixing seat; 10. a threaded rod; 11. a threaded sleeve; 12. a slide block; 13. and a limit strip.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

As shown in fig. 1 to 4:

The utility model provides a telescopic bicycle frame, which comprises a bicycle frame 1, wherein the middle part of the bicycle frame 1 is provided with a central tube 2, and the top end of the central tube 2 is sleeved with a supporting tube 3; the inner side of the top end of the central tube 2 is fixedly provided with a threaded sleeve 11, the inside of the threaded sleeve 11 is connected with a threaded rod 10, the bottom end of the threaded rod 10 is rotatably provided with a sliding block 12, the sliding block 12 is mounted on the inner side of the central tube 2 in a fitting way, the top end of the threaded rod 10 is rotatably connected with a fixing seat 9, and the fixing seat 9 is fixedly mounted in the supporting tube 3; an adjusting handle 4 is horizontally arranged on one side of the supporting tube 3, and one end of the adjusting handle 4 is in transmission connection with a threaded rod 10.

Wherein the central axis of the threaded sleeve 11 and the threaded rod 10 coincides with the central axis of the central tube 2.

Two groups of limiting strips 13 are symmetrically arranged in the supporting tube 3, and limiting sliding grooves which are in sliding connection with the limiting strips 13 are arranged on the outer side of the central tube 2.

The top end of the fixing seat 9 is provided with a connecting shaft 8, the bottom end of the connecting shaft 8 is fixedly connected with the top end of the threaded rod 10, and the top end of the connecting shaft 8 is connected with the inner top end of the supporting tube 3 through a bearing.

The driven bevel gear 7 is fixedly arranged on the outer side of the connecting shaft 8, the driving bevel gear 6 is meshed with one side of the driven bevel gear 7, the driving shaft 5 is fixedly arranged at the center of the driving bevel gear 6, and one end of the driving shaft 5 is fixedly connected with one end of the adjusting handle 4.

Wherein, the supporting tube 3 is a stainless steel tube, and the top end is used for being connected with the bicycle saddle.

The working principle of the embodiment is as follows: firstly, when a rider needs to adjust the height of a seat cushion down in the riding process, only the adjusting handle 4 is required to be rotated, the adjusting handle 4 drives the driving bevel gear 6 to rotate through the driving shaft 5 so as to drive the driven bevel gear 7 to rotate, the connecting shaft 8 is driven to rotate when the driven bevel gear 7 rotates, the threaded rod 10 synchronously operates, the threaded rod 10 operates in the connecting block 11, and the sliding block 12 arranged at the inner bottom side of the supporting tube 3 slides on the outer top side of the central tube 2 so as to drive the supporting tube 3 to adjust the height downwards; when the rider needs to adjust the height of the seat cushion, the speed can be properly slowed down, and the adjusting handle 4 is rotated in the opposite direction to repeat the operation, so that the height of the seat cushion can be adjusted.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The telescopic bicycle frame comprises a bicycle frame (1), wherein a central tube (2) is arranged in the middle of the bicycle frame (1), and is characterized in that a supporting tube (3) is sleeved at the top end of the central tube (2); the inner side of the top end of the central tube (2) is fixedly provided with a threaded sleeve (11), the inside of the threaded sleeve (11) is connected with a threaded rod (10), the bottom end of the threaded rod (10) is rotatably provided with a sliding block (12), the sliding block (12) is mounted on the inner side of the central tube (2) in a fitting way, the top end of the threaded rod (10) is rotatably connected with a fixing seat (9), and the fixing seat (9) is fixedly mounted in the supporting tube (3); one side of the supporting tube (3) is horizontally provided with an adjusting handle (4), and one end of the adjusting handle (4) is in transmission connection with a threaded rod (10).

2. A telescopic bicycle frame according to claim 1, wherein the central axis of the threaded sleeve (11) and threaded rod (10) coincides with the central axis of the central tube (2).

3. The telescopic bicycle frame according to claim 1, wherein two groups of limiting strips (13) are symmetrically arranged in the supporting tube (3), and limiting sliding grooves which are in sliding connection with the limiting strips (13) are arranged on the outer side of the central tube (2).

4. The telescopic bicycle frame according to claim 1, wherein the top end of the fixing seat (9) is provided with a connecting shaft (8), the bottom end of the connecting shaft (8) is fixedly connected with the top end of the threaded rod (10), and the top end of the connecting shaft (8) is connected with the inner top end of the stay tube (3) through a bearing.

5. The telescopic bicycle frame according to claim 4, wherein a driven bevel gear (7) is fixedly arranged on the outer side of the connecting shaft (8), a driving bevel gear (6) is meshed on one side of the driven bevel gear (7), a driving shaft (5) is fixedly arranged at the center of the driving bevel gear (6), and one end of the driving shaft (5) is fixedly connected with one end of the adjusting handle (4).

6. A telescopic bicycle frame according to claim 1, wherein the stay (3) is a stainless steel tube and the top end is adapted to be connected to a bicycle saddle.