CN211032905U

CN211032905U - Rear cradle of motorcycle

Info

Publication number: CN211032905U
Application number: CN201922176931.8U
Authority: CN
Inventors: 林宜定; 王朝忠; 贺海岗
Original assignee: Ningbo Chengming Mould Co ltd
Current assignee: Ningbo Chengming Mould Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-07-17
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a motorcycle rear cradle, which comprises two rear cradle main pipes and a rear cradle connecting pipe, wherein the rear cradle main pipe comprises a first main pipe and a second main pipe, the end part of the first main pipe, which is close to the second main pipe, is sleeved with a first connecting cylinder, the two ends of the first connecting cylinder are respectively in threaded connection with the first main pipe and the second main pipe, and a compression spring is arranged between the end parts of the first main pipe and the second main pipe, which are close to each other; the rear cradle connecting pipe comprises a first pipe and a second pipe, a second connecting cylinder is sleeved on the periphery of the first pipe and the periphery of the second pipe, an inner thread is arranged on the inner wall of the second connecting cylinder, and two ends of the second connecting cylinder are respectively in threaded connection with the first pipe and the second pipe. The rear cradle has adjustable size and good applicability.

Description

Rear cradle of motorcycle

Technical Field

The utility model relates to a motorcycle technical field, concretely relates to cradle behind motorcycle.

Background

The rear cradle is an important stressed part in a rear suspension system of the motorcycle, and is mainly used for installing and fixing the rear wheel of the motorcycle and connected with a motorcycle frame body. Most of the existing rear rocking frames are designed to be H-shaped, the size models of the rear rocking frames are also fixed and unadjustable, the rear rocking frames of one type can only be suitable for motorcycles of one type or a few types, so that the rear rocking frames of various types are produced by continuously adjusting a mould, the operation is troublesome, and the cost is not saved.

SUMMERY OF THE UTILITY MODEL

A main object of the present invention is to provide a motorcycle rear cradle which can be adjusted in size to be suitable for motorcycles of various models.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a motorcycle rear cradle is characterized in that: the rear cradle main pipe comprises a first main pipe and a second main pipe which is matched and connected with the first main pipe, external threads are arranged at the end parts, close to each other, of the first main pipe and the second main pipe, a first connecting cylinder is sleeved on the periphery of one end, close to each other, of the first main pipe and the second main pipe, internal threads are arranged on the inner wall of the first connecting cylinder, the two ends of the first connecting cylinder are respectively in threaded connection with the external threads on the first main pipe and the second main pipe, a compression spring is arranged between the end parts, close to each other, of the first main pipe and the second main pipe, and a first nut and a second nut which are respectively abutted against the corresponding end parts of the first connecting cylinder are sleeved on the external threads on the first main pipe and the second main pipe;

the back cradle connecting pipe includes first pipe and the second pipe that links to each other respectively with two first person in charge, the one end periphery that first pipe and second pipe are close to each other all is equipped with the external screw thread, and the one end periphery cover that first pipe and second pipe are close to each other is equipped with the second connecting cylinder, second connecting cylinder inner wall is equipped with the internal thread, second connecting cylinder both ends respectively with first pipe and the intraductal external screw thread connection of second, the cover is equipped with third nut and the fourth nut that offsets respectively with the corresponding tip of second connecting cylinder on the external screw thread on first pipe and the second pipe.

Further, the external thread on the first main pipe and the external thread on the second main pipe have opposite spiral directions, and the external thread on the first pipe and the external thread on the second pipe have opposite spiral directions. When adjusting first connecting cylinder like this, first being responsible for and the second is responsible for and can stretch out simultaneously or stretch into first connecting cylinder for the back cradle is responsible for and is adjusted very conveniently, and back cradle connecting pipe is connected also conveniently.

Furthermore, washers are arranged between the first nut and the end portion of the corresponding first connecting cylinder, and between the second nut and the end portion of the corresponding first connecting cylinder. Therefore, the two ends of the first connecting cylinder can be fixed more firmly.

Furthermore, the cross section of the outer wall in the middle of the first connecting cylinder and the cross section of the outer wall in the middle of the second connecting cylinder are both in a regular hexagon shape. Thus facilitating the screwing of a wrench or the like.

Furthermore, reinforcing ribs are arranged at the positions where the first pipe and the second pipe are connected with the corresponding first main pipe. This may increase the strength of the connection between the first and second tubes and the first main tube.

Compared with the prior art, the utility model has the advantages of it is following: the length of the rear cradle main pipe adopting the design can be adjusted, and the length of the rear cradle connecting pipe can also be adjusted, so that the rear cradle can adapt to motorcycles of various models, and the adjustment operation is very convenient; by arranging the compression spring, the original gravity of the motorcycle is completely ballasted on the connecting thread, and the compression spring can share the interaction force between a part of the first main pipe and the second main pipe and the first connecting cylinder, so that the pressure between the threads is reduced to avoid the influence on use caused by thread deformation; the outer walls of the middle parts of the first connecting cylinder and the second connecting cylinder are arranged to be regular hexagons, so that the first connecting pipe and the second connecting pipe are screwed more labor-saving; the first person in charge sets up with the second is responsible for the opposite direction of spiral of the external screw thread, can be when rotating first connecting cylinder, and first person in charge and second are responsible for and stretch out simultaneously or stretch into first connecting cylinder for the back cradle is responsible for and adjusts very conveniently, and is so convenient also when the connecting pipe of back cradle is adjusted.

Drawings

Fig. 1 is a schematic cross-sectional view of a rear cradle according to a preferred embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the terms of orientation and positional relationship indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of protection of the present invention.

As shown in fig. 1 to 2, the utility model discloses a preferred embodiment structure schematic diagram, as shown in the figure, this motorcycle back cradle includes that the back cradle that two symmetries set up is responsible for and connects two back cradle main pipes's back cradle connecting pipe, back cradle main pipe includes that first person in charge 11 reaches the second person in charge 12 that links to each other with first person in charge 11 cooperation, first person in charge 11 all is equipped with the external screw thread with the tip that second person in charge 12 is close to each other, first person in charge 11 is equipped with first connecting tube 13 with the one end periphery cover that second person in charge 12 is close to each other, first connecting tube 13 inner wall is equipped with the internal thread, first connecting tube 13 both ends respectively with the first person in charge 11 and the second person in charge of external screw thread threaded connection on 12, first person in charge 11 and second person in charge 12 are equipped with compression spring 14 between the tip that is close to each other, the first person in charge 11 and second person in charge on 12 external screw thread cover be equipped with the first nut 15 and the second connecting tube 13 that the corresponding A nut 16; the back cradle connecting pipe includes and is responsible for 11 first pipe 21 and the second pipe 22 that link to each other respectively with two first, the one end periphery that first pipe 21 and second pipe 22 are close to each other all is equipped with the external screw thread, and the one end periphery cover that first pipe 21 and second pipe 22 are close to each other is equipped with second connecting cylinder 23, second connecting cylinder 23 inner wall is equipped with the internal thread, second connecting cylinder 23 both ends respectively with the external screw thread threaded connection on first pipe 21 and the second pipe 22, the cover is equipped with third nut 24 and fourth nut 25 that offsets respectively with the corresponding tip of second connecting cylinder 23 on the external screw thread on first pipe 21 and the second pipe 22.

The length of the rear cradle main pipe adopting the design can be adjusted, and the length of the rear cradle connecting pipe can also be adjusted, so that the rear cradle can adapt to motorcycles of various models, and the adjustment operation is very convenient; through setting up compression spring 14, the whole ballasts of original motorcycle gravity are on the connecting thread, and compression spring 14 can share the mutual effort between partly first main pipe 11 and second main pipe 12 and first connecting cylinder 13 to alleviate the pressure between the screw thread and avoid connecting thread deformation and influence the use.

In this embodiment, the external thread on the first main pipe 11 and the external thread on the second main pipe 12 have opposite helical directions, and the external thread on the first pipe 21 and the external thread on the second pipe 22 have opposite helical directions. When adjusting first connecting cylinder 13 like this, first being responsible for 11 and second being responsible for 12 can stretch out simultaneously or stretch into first connecting cylinder 13 for the back cradle is responsible for and is adjusted very conveniently, and the connecting pipe of back cradle is adjusted equally conveniently.

In this embodiment, washers 17 are disposed between the first nut 15 and the second nut 16 and the end portions of the corresponding first connecting cylinders 13. This makes it possible to fix both ends of the first connecting cylinder 13 more firmly.

In this embodiment, the cross section of the outer wall in the middle of the first connecting cylinder 13 and the cross section of the outer wall in the middle of the second connecting cylinder are both regular hexagons. Thus facilitating the screwing of a wrench or the like.

In the present embodiment, the reinforcing ribs 3 are provided at positions where the first pipe 21 and the second pipe 22 are connected to the corresponding first main pipe 11. This can increase the strength of the connection between the first and

second tubes

21 and 22 and the first main tube 11.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A motorcycle rear cradle is characterized in that: the rear cradle main pipe comprises a first main pipe and a second main pipe which is matched and connected with the first main pipe, external threads are arranged at the end parts, close to each other, of the first main pipe and the second main pipe, a first connecting cylinder is sleeved on the periphery of one end, close to each other, of the first main pipe and the second main pipe, internal threads are arranged on the inner wall of the first connecting cylinder, the two ends of the first connecting cylinder are respectively in threaded connection with the external threads on the first main pipe and the second main pipe, a compression spring is arranged between the end parts, close to each other, of the first main pipe and the second main pipe, and a first nut and a second nut which are respectively abutted against the corresponding end parts of the first connecting cylinder are sleeved on the external threads on the first main pipe and the second main pipe;

2. A motorcycle rear cradle as set forth in claim 1, wherein: the external thread on the first main pipe and the external thread on the second main pipe have opposite spiral directions, and the external thread on the first pipe and the external thread on the second pipe have opposite spiral directions.

3. A motorcycle rear cradle as set forth in claim 2, wherein: and gaskets are arranged between the first nut and the corresponding first connecting cylinder end part and between the second nut and the corresponding first connecting cylinder end part.

4. A motorcycle rear cradle as set forth in claim 3, wherein: the cross section of the outer wall in the middle of the first connecting cylinder and the cross section of the outer wall in the middle of the second connecting cylinder are both in a regular hexagon shape.

5. A motorcycle rear cradle as set forth in claim 1, wherein: and reinforcing ribs are arranged at the positions where the first pipe and the second pipe are connected with the corresponding first main pipe.