Base component of derailleur and derailleur

Abstract

The utility model discloses a base component of a derailleur and the derailleur, the base component of the derailleur comprises: a housing in which a connecting groove is arranged; the embedded part is mounted in the connecting groove; two knurling parts which are arranged at an interval are arranged on the outer side face of the embedded part in the circumferential direction, and two limiting grooves matched with the two knurling parts are formed in the connecting groove; a limiting ring used for limiting the embedded part is arranged in the open end of the connecting groove. And the vehicle frame connecting bolt is connected into the embedded part. The two knurling parts are matched with the two limiting grooves respectively, the first limiting table is matched with the first limiting part, and the first limiting table is matched with the second limiting part, so that the embedded part can be stably and reliably matched in the connecting groove, and the embedded part is effectively prevented from being separated from the connecting groove. The embedded part is stably and reliably connected to the shell, so that it can be guaranteed that the frame connecting bolt can be stably and reliably connected to the shell, and the base component can be stably and reliably connected to a frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to a riding equipment technical field, concretely relates to a base member of chain derailleur and chain derailleur. BACKGROUND

[0002] Riding equipment increasingly becomes popular leisure and transportation. Moreover, for amateur and professional, riding has become a very popular competitive sports project. Whether the bicycle is used for leisure, transportation or competition, the riding equipment is constantly improving various devices of the bicycle to provide better use experience for the user.

[0003] The derailleur of the riding equipment includes the rear derailleur installed near the rear wheel shaft of the tail end of the bicycle, and for the rear derailleur, it usually includes the base member, the connecting member, the movable member, the chain guide and the like, the movable member is movably connected to the base member through the connecting member, and under the action of the control pull wire on the variable speed shift lever, the chain guide moves laterally relative to the base member to achieve the purpose of gear shifting.

[0004] At present, the base member of the existing rear derailleur is usually made of metal, which is heavy, easy to be corroded and has short service life. In addition, the connecting bolt for connecting the riding frame is arranged on the base member, and the stable and reliable connection of the connecting bolt cannot be realized, so that the base member structure is not stable and reliable, and the base member cannot be stably and reliably connected to the riding frame. SUMMARY

[0005] The utility model aims at providing a base member of chain derailleur to solve the defect that the existing plug-in connecting bolt cannot be stably and reliably connected to the base member.

[0006] Therefore, the utility model provides a base member of chain derailleur, which comprises a shell, a connecting groove is arranged in the shell, an embedded part is installed in the connecting groove, two spaced apart knurling parts are arranged on the outer side surface of the embedded part in the circumferential direction, two limiting grooves matched with the two knurling parts are arranged in the connecting groove, a limiting ring for limiting the embedded part is arranged in the opening end of the connecting groove, and a frame connecting bolt is connected in the embedded part.

[0007] Preferably, the shell is made of plastic, and the embedded part is made of metal.

[0008] Preferably, the embedded part is provided with an internal thread groove, a threaded part is arranged on the frame connecting bolt, and the threaded part is connected in the internal thread groove.

[0009] Preferably, the two limiting grooves are arranged in the circumferential direction and spaced apart along the inner wall of the connecting groove.

[0010] Preferably, the inner diameter of the limiting ring is smaller than the inner diameter of the connecting groove.

[0011] Preferably, the two knurling parts are separated to form a first limiting part and a second limiting part, the first limiting part is between the two knurling parts, and the second limiting part is at the end of the inner insert; the connecting groove is provided with a first limiting platform matched with the first limiting part and a second limiting platform matched with the second limiting part.

[0012] Preferably, the inner insert is a cylinder, and the outer diameter of the inner insert is 6-10mm.

[0013] Preferably, the shell comprises a mounting portion, the connecting groove is arranged in the mounting portion, and a contact block is arranged between the frame connecting bolt and the mounting portion.

[0014] Preferably, the contact block is provided with a matching arc surface matched with the mounting portion, and a matching flat surface matched with the frame connecting bolt.

[0015] The utility model also provides a chain derailleur, including the base member of chain derailleur.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that: the utility model provides a base member of chain derailleur, which comprises: a shell, a connecting groove arranged in the shell; an inner insert, which is arranged in the connecting groove; the outer side of the inner insert is circumferentially provided with two spaced knurling parts, and the connecting groove is provided with two limiting grooves matched with the two knurling parts; the opening end of the connecting groove is provided with a limiting ring for limiting the inner insert; and a frame connecting bolt, which is connected to the inner insert. The two knurling parts are matched with the two limiting grooves respectively, the first limiting platform is matched with the first limiting part, and the first limiting platform is matched with the second limiting part, so that the inner insert can be stably and reliably matched in the connecting groove, and the inner insert can be effectively prevented from separating from the connecting groove. The inner insert is stably and reliably connected to the shell, so that the frame connecting bolt can be stably and reliably connected to the shell, and the base member can be stably and reliably connected to the frame.

[0017] Other features and advantages of the utility model will become more apparent after reading the specific implementation manner of the utility model in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure schematic diagram of one embodiment of chain derailleur of the utility model;

[0019] Figure 2is a structural schematic view of one embodiment of the base member of the chain derailleur of the utility model;

[0020] Figure 3 is a cross-sectional schematic view two of one embodiment of the base member of the chain derailleur of the utility model;

[0021] Figure 4 is a cross-sectional schematic view three of one embodiment of the base member of the chain derailleur of the utility model;

[0022] Figure 5 is a structural schematic view of one embodiment of the embedded part of the utility model;

[0023] Figure 6 is a structural schematic view one of one embodiment of the abutting block of the utility model;

[0024] Figure 7 is a structural schematic view two of one embodiment of the abutting block of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will combine with the drawings and examples, and make further detailed description to the utility model.

[0026] In one embodiment of the utility model, a chain derailleur is provided, which is installed on the frame of a cycling device; the chain derailleur comprises a base member and a chain guide member 50, and the connection mode of the base member and the chain guide member 50 is the general connection mode in the technical field, which is not specifically limited here. The base member comprises a housing 10, and a driving unit (not shown in the figure) is installed in the housing 10.

[0027] The frame of the cycling device is provided with a chain wheel assembly and a chain, and the chain wheel assembly comprises a plurality of chain wheels of different sizes. The chain guide member 50 is used for guiding the chain, so that the chain is matched on the chain wheels of the chain wheel assembly. The chain guide member 50 moves under the driving of the driving unit, so that the chain is shifted from an initial chain wheel to a target chain wheel, thereby realizing the shifting operation of the chain and each chain wheel.

[0028] In one embodiment of the utility model, the base member of the chain derailleur comprises a housing 10, the housing 10 is provided with a connecting groove 11; an embedded part 20 is installed in the connecting groove 11; the outer side surface of the embedded part 20 is circumferentially provided with two spaced apart knurling parts 21, the connecting groove 11 is provided with two limiting grooves 111 matched with the two knurling parts 21; the opening end of the connecting groove 11 is provided with a limiting ring 112 for limiting the embedded part 20; and a frame connecting bolt 30 is connected in the embedded part 20.

[0029] The shell 10 can be made of plastic, so that the shell 10 is light in weight, thereby reducing the weight of the entire base member. In addition, the shell 10 made of plastic can effectively prevent corrosion, so that the sweat of the rider cannot corrode the shell 10, and the shell 10 can also avoid corrosion and damage caused by humid or salt mist air. Moreover, the shell 10 made of plastic can be easily processed into a shape, thereby reducing the processing cost of the shell 10.

[0030] The inner insert 20 is made of metal, so that the inner insert 20 is stable and reliable in structure and long in service life, the inner insert 20 can be stably and reliably connected in the connecting groove 11, and the frame connecting bolt 30 can be stably and reliably connected on the inner insert 20, so that the entire base member is stable and reliable in structure and long in service life, and the base member can be stably and reliably connected on the frame.

[0031] In an embodiment of the utility model, the inner insert 20 is in the shape of a cylinder as a whole, the cross-sectional shape of the inner insert 20 is circular, and the outer diameter of the inner insert 20 is 6-10 mm, so that the connection strength of the inner insert 20 can be enhanced.

[0032] In other preferred embodiments, the inner insert 20 can also be in the shape of a cuboid or other shapes, and the maximum transverse dimension of the cross-sectional shape of the inner insert 20 is 6-10 mm, so that the connection strength of the inner insert 20 can be enhanced.

[0033] The inner insert 20 is internally provided with an internal thread groove 22 along the axial direction thereof, the frame connecting bolt 30 is provided with a threaded portion 31, and the threaded portion 31 is threadedly connected in the internal thread groove 22, so that the frame connecting bolt 30 can be conveniently and quickly connected and detached.

[0034] The frame connecting bolt 30 is connected on the frame, so that the derailleur can be connected on the frame. The frame connecting bolt 30 is connected on the frame in a manner commonly used in the technical field, which is not specifically limited herein.

[0035] The two knurled portions 21 are circumferentially arranged on the outer side surface of the inner insert 20 and protrude from the outer surface of the inner insert 20. The two protruding and spaced knurled portions 21 divide the outer portion of the inner insert 20 into the first limiting portion 23 and the second limiting portion 24. The first limiting portion 23 is located between the two knurled portions 21, and the second limiting portion 24 is located at the opening end of the inner insert 20.

[0036] Two limiting grooves 111 are circumferentially and spaced apart along the inner wall of the connecting groove 11, the two limiting grooves 111 are recessed on the inner wall of the connecting groove 11, and the two recessed limiting grooves 111 divide the connecting groove 11 into a first limiting table 113 and a second limiting table 114, the first limiting table 113 and the second limiting table 114 are spaced apart by one of the limiting grooves 111, the first limiting table 113 is located between the two limiting grooves 111, and the second limiting table 114 is located at the opening end of the connecting groove 11.

[0037] The two knurled portions 21 are matched with the two limiting grooves 111 respectively, the first limiting table 113 is matched with the first limiting portion 23, and the first limiting table 11 is matched with the second limiting portion 24, so that the inner insert 20 can be stably and reliably matched in the connecting groove 11, and the inner insert 20 can be effectively prevented from being separated from the connecting groove 11.

[0038] The inner diameter of the limiting ring 112 is smaller than the inner diameter of the connecting groove 11, which can effectively limit the inner insert 20 and effectively prevent the inner insert 20 from being separated from the connecting groove 11.

[0039] In an embodiment of the utility model, the shell 10 includes a mounting portion 12, and the connecting groove 11 is arranged in the mounting portion 12. The mounting portion 12 and the shell 10 are integrated, the connecting bolt 30 is mounted on the mounting portion 12, the mounting portion 12 and the shell 10 are mounted on the frame through the connecting bolt 30, and the angle between the chain derailleur and the frame can be adjusted through the frame connecting bolt 30.

[0040] In an embodiment of the utility model, the base member of the chain derailleur further includes a contact block 40, which is in contact between the frame connecting bolt 30 and the mounting portion 12.

[0041] The contact block 40 is an integrated part, which can be integrally formed through a machining process, so that the contact block 40 has a stable and reliable structure and a long service life.

[0042] The contact block 40 is provided with a matching arc surface 41 matched with the mounting portion 12, and the contact block is provided with a matching flat surface 42 matched with the frame connecting bolt 30. The matching arc surface 41 can be matched with the outer side surface of the mounting portion 12, so that the contact block 40 can be stably and reliably in contact with the mounting portion 12; the matching flat surface 42 can be matched and fitted with the frame connecting bolt 30, so that the contact block 40 can be stably and reliably in contact with the frame connecting bolt 30; so that the contact block 40 can be stably and reliably in contact between the frame connecting bolt 30 and the mounting portion 12, and the fastening connection of the frame connecting bolt 30 is strengthened.

[0043] The above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, for those skilled in the art, the technical solutions recorded in the foregoing examples can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A base member of a derailleur, characterized by, The base member of the derailleur comprises: a housing, which is internally provided with a connecting groove; an insert, which is installed in the connecting groove; the outer side of the insert is circumferentially provided with two spaced knurling portions, and the connecting groove is internally provided with two limiting grooves matched with the two knurling portions; and the opening end of the connecting groove is internally provided with a limiting ring for limiting the insert; a frame connecting bolt, which is connected in the insert.

2. The base member of the derailleur according to claim 1, wherein the housing is made of plastic, and the insert is made of metal.

3. The base member of the derailleur according to claim 1, wherein the insert is internally provided with a threaded groove, and the frame connecting bolt is externally provided with a threaded portion, which is connected in the threaded groove.

4. The base member of the derailleur according to claim 1, wherein the two limiting grooves are circumferentially and spacedly arranged along the inner wall of the connecting groove.

5. The base member of the derailleur according to claim 1, wherein the inner diameter of the limiting ring is smaller than the inner diameter of the connecting groove.

6. The base member of the derailleur according to claim 1, wherein the two knurling portions divide the outer part of the insert into a first limiting portion and a second limiting portion, the first limiting portion is located between the two knurling portions, and the second limiting portion is located at the end of the insert; and the connecting groove is internally provided with a first limiting platform matched with the first limiting portion and a second limiting platform matched with the second limiting portion.

7. The base member of the derailleur according to claim 1, wherein the insert is in the shape of a cylinder, and the outer diameter of the insert is 6-10 mm.

8. The base member of the derailleur according to claim 1, wherein the housing comprises a mounting portion, and the connecting groove is arranged in the mounting portion; and the frame connecting bolt and the mounting portion are abutted by an abutting block.

9. The base member of the derailleur according to claim 8, wherein the abutting block is externally provided with a matching curved surface matched with the mounting portion, and is externally provided with a matching flat surface matched with the frame connecting bolt.

10. A derailleur characterised in that, The base member of the derailleur comprises any one of claims 1-9.

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