WO2014026414A1

WO2014026414A1 - Torque transmission connector

Info

Publication number: WO2014026414A1
Application number: PCT/CN2012/080884
Authority: WO
Inventors: 栗运岭; 赵胜乐
Original assignee: Li Yunling; Zhao Shengle
Priority date: 2012-08-16
Filing date: 2012-08-31
Publication date: 2014-02-20
Also published as: CN202783544U

Abstract

A torque transmission connector comprising: a fork part (31), a main part (32), and a connecting part (33). The fork part (31) is two tines extending from one side of the main part (32) and has a U-shaped fork opening (311). The U-shaped fork opening (311) is provided at the lower end thereof with a through hole (312). The connecting part (33) is two tines extending from the other side of the main part (32). The fork part (31), the main part (32), and the connecting part (33) form the shape of the letter "I."

Description

Torque transmission joint

Technical field

The utility model relates to a joint, in particular to a torque transmission joint for assisting a bicycle. Background technique

At present, bicycles have become the most widely used vehicle in the world due to their economic, environmental protection and convenience, and technicians are constantly improving them. An important direction of the existing improvement scheme is to convert the gravity change caused by the change of the rider's posture or the bump of the road into torque during the riding, and provide assistance for the bicycle. The torque generated by the change of gravity is converted into assisting force. It is necessary to have a torque transmitting mechanism between the torque generating mechanism and the torque converting mechanism or the actuator, and the torque transmitting mechanism should be as light as possible, and have the strength and the required torque to transmit the torque. hardness. Utility model content

SUMMARY OF THE INVENTION It is an object of the present invention to provide a torque transmitting coupling for transmitting torque from a torque generating mechanism to other mechanisms that is lightweight and has the strength and stiffness required to transmit reciprocating torque.

To achieve the above object, an embodiment of the present invention provides the following technical solutions: A torque transmission joint includes:

Cross section;

main part;

Connection part

The fork portion is two arms extending from one side of the main body portion, and has a U-shaped fork having a through hole at a lower end thereof, and the connecting portion is from the other side of the main body portion The extended arms, the fork portion, the body portion and the connecting portion form a "work" shape.

Optionally, the torque transmitting joint is die cast from an aluminum alloy material.

Optionally, a fork formed by a steel material is embedded in the U-shaped fork of the fork portion. Incoming.

Optionally, the fork insert is subjected to surface phosphating.

Optionally, the fork insert has a plurality of teeth on the exterior.

Optionally, the body portion has a lug.

Optionally, the body portion has a lightening hole.

Optionally, there is a reinforcing rib between the fork portion and the body portion.

The connecting portion of the torque transmitting joint is connectable to a torque generating mechanism, the body portion is subjected to torque, and the fork portion transmits torque outward.

The torque transmitting joint is light in weight and high in strength due to die casting using an aluminum alloy material.

Further, since the fork portion adopts a U-shaped fork, it is more advantageous for torque transmission than a general circular fork.

Further, the hardness of the torque transmitting joint is increased due to the presence of the fork insert of the steel material.

Further, since the main body portion has a lightening hole, the weight thereof is lightened. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the present invention will be further described in detail with reference to the accompanying drawings in which: FIG. 1 is a schematic view showing a mounting position of a torque transmission joint according to an embodiment of the present invention; FIG. 2 is a torque transmission joint of an embodiment of the present invention. Top view

Figure 3 is a cross-sectional view taken along the chain line B-B of Figure 2;

4 is a front view of a torque transmission joint according to another embodiment of the present invention; in the above figure, the serial number is: 1-forcer 2-swing rear fork 3-torque transmission joint 31-fork portion

311-U fork 312-through hole 32- body part 321-rab 322-weight reduction hole 323-bolt hole

324-reinforced rib 33-connecting part 4-torque converter 5-fork insert insert

Figure 1 shows the mounting position of the torque transmitting joint 3. The force transmitter 1 transmits the change of gravity to the pendulum type rear fork 2, and thus generates a torque on the pendulum type rear fork 2, and the pendulum type rear insertion 2 passes The torque transmitting joint 3 transmits torque to the torque converter 4.

FIG. 2 shows the specific structure of the torque transmission joint 3. As can be seen from the figure, the entire structure is roughly symmetrical about the axis AA. The fork portion 31 projects from one side of the main body portion and has a U-shaped fork 311 at its end for engaging the torque input shaft of the torque converter 4. The body portion 32 has a lug 321 which, as seen more clearly in Fig. 3, has a bolt hole 323 for articulating with the force transmitter 1. One of ordinary skill in the art can imagine that the lug 321 can also be located on the swing-type rear fork 2 without affecting the force transmission effect, but it is obviously advantageous to position the lug 321 on the torque transmitting joint 3 from the viewpoint of maintenance convenience. The body portion 32 also has a plurality of through holes 322 as weight reducing holes, which further saves material and reduces weight. The connecting portion 33 extends from the other side of the main body portion 32 and is joined to the pendulum type rear fork 2 by welding, bolting, riveting or the like, preferably by welding. The fork portion 31, the body portion 32 and the connecting portion 33 are formed in a "work" shape, preferably formed of an aluminum alloy material such as YZAlSi ₁₂ Cu ₂ , which is die-cast to have a certain strength and can withstand reciprocating torque. In order to increase the structural strength of the torque transmitting joint 3, reinforcing ribs 324 are formed between the fork portion 31 and the body portion 32.

Figure 3 is a cross-sectional view taken along the chain line B-B of Figure 2 . The fork 311 shown in the figure is U-shaped, and the lower end has a through hole 312. After the fork 311 is engaged with the torque input shaft of the torque converter 4, a bolt is installed in the through hole 312 to lock the torque input shaft to the fork. In port 311.

Figure 4 illustrates another embodiment of the present invention. In this embodiment, the fork insert 5 is embedded in the U-shaped fork 311. Since the U-shaped fork 311 engages the torque input shaft of the torque converter 4 to transmit torque outward, the occlusal surface is often subjected to a force and requires a higher hardness to reduce the risk of deformation and wear of the fork 311. The fork insert 5 is made of a steel material, preferably made of Q235 steel, and can be further improved in hardness after surface phosphating. Preferably, the fork insert 5 has a plurality of teeth on the outside to improve the rigidity of the engagement with the U-shaped fork 311.

Although the present invention has been described in connection with the above embodiments, the present invention is not limited to the above embodiments, but only by the claims, those skilled in the art can easily modify and change them, but The true concept and scope of the present invention are not left.

Claims

Rights request

A torque transmitting joint comprising:

Cross section;

main part;

Connection part

2. The torque transmitting coupling of claim 1 wherein the torque transmitting joint is die cast from an aluminum alloy material.

The torque transmission joint according to claim 2, wherein a fork insert made of a steel material is embedded in the U-shaped fork of the fork portion.

4. The torque transmitting coupling of claim 3, wherein the fork insert is subjected to surface phosphating.

5. The torque transmitting coupling of claim 3, wherein the fork insert has a plurality of teeth on the exterior.

6. The torque transmitting coupling of claim 1 wherein the body portion has a lug.

7. The torque transmitting joint of claim 1, wherein the body portion has a lightening hole.

8. The torque transmitting coupling of claim 1 wherein there is a reinforcing rib between the fork portion and the body portion.