CN207725566U

CN207725566U - It is a kind of that there is the circumferential speed-changing chain for being indirectly connected with disc

Info

Publication number: CN207725566U
Application number: CN201721672344.2U
Authority: CN
Inventors: 谢涛; 郑潇然; 薛慧
Original assignee: Hunan Naite Mstar Technology Ltd
Current assignee: Hunan Suao Technology Co ltd
Priority date: 2017-12-05
Filing date: 2017-12-05
Publication date: 2018-08-14
Anticipated expiration: 2027-12-05

Abstract

The utility model discloses a kind of speed-changing chain that there is circumferential direction to be indirectly connected with disc as sports bicycle comprising：The conical hollow body structure that disc, big end gear ring and small end gear ring are integrally formed.Disc outer circle inlays with the connection structure of the inner circle of big end gear ring by being separated by the connection structure of certain angle distribution and be adapted to connection, and inlay adaptation junction by rivet or screw by disc with the progress of adjacent disc is axial connect.Disc outer circle is adapted to connection using intermittent inlay with the inner circle of big end gear ring, and disc is carried out with adjacent disc by axial direction by riveting or screw and is connect.Both it ensure that antitorque, and radial load can also have been born, it is also ensured that disc will not be detached from conical hollow sprocket body structure.The utility model light weight, simple in structure, easy making process, cost is relatively low, easy to utilize.

Description

It is a kind of that there is the circumferential speed-changing chain for being indirectly connected with disc

Technical field

The utility model is related to a kind of bicycle gear component more particularly to a kind of rigidity, intensity higher and quality compared with Light bicycle gear sprocket wheel.

Background technology

With the development of the society, requirement of the various vehicles for lightweight, high intensity now is higher and higher.At present certainly Driving is typically to carry out loss of weight with structure lightened by material lightweight, and lightweight is that have enough with intensity and rigidity Guarantee premised on, for sports bicycle, have higher want to intensity and the rigidity of speed-changing chain It asks.And speed-changing chain is one of most important parts in bicycle, basic performance requirement is the situation certain in quality Under, the higher the better with rigidity for intensity, i.e., the higher the better with specific stiffness for specific strength.

The speed-changing chain of bicycle is the gear ring structure wheel group disposed in parallel of multilayer different-diameter, and usually there are two types of typical Structure type, one is punching press gear rings by riveting the speed-changing chain to be formed that is stacked（Using SHIMANO as representative）, another Kind is a kind of taper（Or cone pulley）Hollow body does the parallel integral type set on its outer circle of gear ring of the multilayer different-diameter of supporter Sprocket wheel（Using SRAM as representative）.It is more that former product punching press gear ring, which is stacked by riveting and to form the product of speed-changing chain, Number, often rigidity is smaller with intensity, and bearing capacity is weaker, and heavier mass, but processing technology is good；Latter is taper （Or cone pulley）Hollow body structure, and be typically to be process by a block of material, thus there is higher intensity and rigidity, simultaneously also With lighter quality.This taper（Or turriform）The sprocket wheel of hollow body structure, there are two types of structures, one is, it is by big end Gear ring is made of one with spoke, and it is whole to be then axially connected into one with the conical hollow body structure of the gear ring with small end again Speed-changing chain；The second is big end gear ring and small end gear ring all integral productions constitute conical hollow body structure, then spoke is flush-mounted in The inner circle of big end gear ring axially connects and composes a whole speed-changing chain with conical hollow body structure simultaneously.This bull gear and wheel The embedding structure of spoke, but there are two types of the modes of being embedded in.The first is that the spoke excircle configuration is continuous whole, embedded peace It is contacted with the complete cycle inner circle of bull gear after dress, i.e., disc outer circle is mutually coincide with bull gear inner circle complete cycle, continuous with its outer circle Profile carries out radial positioning and circumferential transmission torque.This embedding structure has two, and first problem is to work as this knot Structure is easy that it is made to detach with maximum gear ring or secondary maximum gear ring when deforming, another problem is similar " the lid structure of this spoke Part ", quality are larger.Second is that the spoke outer circle is non-continuous whole profile, and spoke is to pass through phase after embedded installation What the inner circle every the position of certain angle distribution and bull gear connected.I.e. disc is in position and bull gear by its major diameter The methods of round tight fit and welding are realized positioning and are connect.There is also when connecting portion is because of stress deformation for this connection type When, it is easy to make connecting portion to be detached from or the problem of insufficient strength, according to being welded after tight fit, then also welding deformation The problem of.

Therefore, how the connection structure of a kind of light-weight, intensity and the high spoke and big end gear ring non-solder of rigidity is provided, Bicycle gear sprocket wheel to meet the operation of sports bicycle big load is industry urgent problem to be solved.

Utility model content

The utility model is not high with rigidity for the intensity for solving existing bicycle variable speed chain wheel, is not met by movement certainly The technical issues of big load of driving a vehicle operation, proposes that the light-weight, intensity of one kind and rigidity are high, meets the operation of sports bicycle big load There is the circumferential speed-changing chain for being indirectly connected with disc.

The utility model proposes a kind of there is the circumferential speed-changing chain for being indirectly connected with disc comprising：Disc, big end tooth The conical hollow body structure that circle and small end gear ring are integrally formed.The connection knot that the disc outer circle is distributed by being separated by certain angle Structure is inlayed with the connection structure of the inner circle of big end gear ring is adapted to connection, and will by connector in the adaptation junction of inlaying The disc carries out axial direction with adjacent disc and connect.

Preferably, the connector is riveting or screw.

Preferably, the connection structure of the disc outer circle includes connecting plate, neck and the head that outward radial extends successively.

And the connection structure of the big end gear ring inner circle includes the docking opposite with the connecting plate extended radially inward Plate, the groove being embedded in for the neck and head being set on the buttcover plate.

Or it can also：

The connection structure of the big end gear ring inner circle includes the connecting plate, neck and head radially extended successively.

The connection structure of the disc outer circle includes the buttcover plate opposite with the connecting plate extended radially outwards, is set to The groove being embedded in for the neck and head on the buttcover plate.

Wherein, the disc is equipped with lightening hole.

Preferably, the disc is connect with being located by connecting for big end gear ring for tight fit connection and/or spot welding.

Preferably, the neck and head, which extend radially out, adds up to 0.6 ~ 2 mm.

The disc outer circle of the utility model is adapted to connection with the inner circle of big end gear ring using intermittent inlay, and passes through riveting Or the disc is carried out axial direction with adjacent disc and connect by screw.The speed-changing chain of this connection structure, can both ensure it is antitorque, Radial load can also be born, especially after sprocket wheel stress deformation, since the effect of neck shape mosaic texture can guarantee disc not It can be detached from conical hollow sprocket body structure.Quality is both alleviated in this way, it may have very high bonding strength and rigidity.It is more convenient Be that disc can be manufactured from conical hollow sprocket body structure using different materials.The utility model is simple in structure, adds Work is convenient, and cost is relatively low, easy to utilize.

Description of the drawings

Fig. 1 is the cut-away illustration of the speed-changing chain-preferred embodiment-of the utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the schematic diagram of disc in Fig. 2；

Fig. 4 is the schematic diagram of big end gear ring in Fig. 2.

Wherein, 1-- disc, 2-- conical hollow bodies structure, 3-- lightening holes, 4-- big ends gear ring, 5-rivets, 6-- small ends Gear ring, 7-- connecting plates, 8-- necks, the heads 9--, 10-- buttcover plates, 11-- grooves.

Specific implementation mode

The utility model is described in detail in conjunction with the embodiments below against attached drawing.

As shown in Figure 1 and Figure 2, it is the configuration shows of the utility model preferred embodiment, described has circumferential be indirectly connected with The speed-changing chain of disc comprising the taper that disc 1, big end gear ring 4 and small end gear ring 6 equipped with lightening hole 3 are integrally formed is empty Heart body structure 2.1 outer circle of disc by be separated by certain angle distribution multiple connection structures and the inner circle of big end gear ring 4 it is multiple Connection structure inlays adaptation connection, and inlays adaptation junction by connector by the disc 1 and adjacent disc described Carry out axial connection.For example, carrying out axial connection by rivet 5 or screw.

In the present embodiment, as shown in Figure 3, Figure 4, the connection structure of 1 outer circle of the disc includes：Outward radial extends successively Connecting plate 7, neck 8 and head 9, the lateral dimension on the head is significantly greater than the size of neck 8.And 4 inner circle of big end gear ring Connection structure includes：The buttcover plate 10 opposite with the connecting plate 7 extended radially inward, be set to the buttcover plate 10 on for institute State the groove 11 of neck 8 and the insertion of head 9.As needed, the connection structure of 4 inner circle of big end gear ring can also be arranged radially Connecting plate, neck and the head extended successively.And the connection structure of 1 outer circle of disc includes extending radially outwards with the connection The opposite buttcover plate of plate, the groove being embedded in for the neck and head being set on the buttcover plate.9 shape of head can be with It is a variety of geometries, such as round, oval, rectangle or diamond shape etc., as long as ensureing that its lateral dimension is more than the neck 8 Lateral dimension.General neck 8 and 9 radially-protruding length of head add up to 0.3 ~ 2 mm.

It, can be first by the docking of the connecting plate 7 of disc 1, neck 8 and head 9 alignment big end gear ring 4 incorporated by reference to Fig. 1 ~ Fig. 4 The connection of inlaying of plate 10 and the insertion installation of groove 11, the two can be that tight fit connection or tight fit connection are connected with spot welding.Again The disc 1 axial direction is carried out with adjacent disc by riveting 5 or screw on the head 9 to connect, it is usually adjacent with disc 1 Disc on an axially extending step 7（It please read Fig. 1）, the head 9 of disc is just corresponded to, by head 9 and the step 7 by riveting 5 or screw the disc 1 and adjacent disc are subjected to axial direction and connect.

Embodiment described above is primarily to illustrate the creating conception of the utility model, it is noted that for this For the those of ordinary skill in field, without departing from the concept of the premise utility, several deformations can also be made and changed Into these belong to the scope of protection of the utility model.

Claims

1. a kind of having the circumferential speed-changing chain for being indirectly connected with disc, including disc（1）, big end gear ring（4）With small end gear ring（6） The conical hollow body structure being integrally formed（2）, which is characterized in that the disc（1）Outer circle is by being separated by certain angle distribution Connection structure and big end gear ring（4）The connection structure of inner circle inlays adaptation connection, and passes through in the adaptation junction of inlaying Connector is by the disc（1）It is attached with adjacent disc.

2. speed-changing chain as described in claim 1, which is characterized in that the connector is rivet or screw.

3. speed-changing chain as claimed in claim 1 or 2, which is characterized in that the disc（1）The connection structure of outer circle include to The connecting plate that outer radial extends successively（7）, neck（8）The head and（9）.

4. speed-changing chain as claimed in claim 3, which is characterized in that the big end gear ring（4）The connection structure of inner circle includes The buttcover plate opposite with the connecting plate extended radially inward（10）, it is set to the buttcover plate（10）On the confession neck（8） The head and（9）Embedded groove（11）.

5. speed-changing chain as claimed in claim 1 or 2, which is characterized in that the big end gear ring（4）The connection structure packet of inner circle Include the connecting plate, neck and head radially extended successively.

6. speed-changing chain as claimed in claim 5, which is characterized in that the disc（1）The connection structure of outer circle includes outside The buttcover plate opposite with the connecting plate radially extended, being embedded in for the neck and head on the buttcover plate are recessed Slot.

7. speed-changing chain as claimed in claim 1 or 2, which is characterized in that the disc（1）Equipped with lightening hole（3）.

8. speed-changing chain as claimed in claim 1 or 2, which is characterized in that the disc（1）With big end gear ring（4）Inlay Adaptation is connected as tight fit connection and/or spot welding connection.

9. speed-changing chain as claimed in claim 3, which is characterized in that the neck（8）The head and（9）It extends radially out and adds up to 0.3~2 mm。