TWM460185U - Chain unit - Google Patents

Description

Chain unit

This creation relates to a chain, especially the composition of the chain elements in the chain.

The chain system is set between the plurality of sprocket wheels and is used as the main component of the power transmission wheel. During the design process of the chain, the chain will be modified or improved due to the use of the chain or the disadvantages of the use.

The currently known chain is mainly composed of a plurality of chain units which are sequentially connected in series to form a ring body. The chain unit has a plurality of combinations of five elements or three elements, and the three element type chain units mainly include two The inner chain piece, the two outer chain piece and the one chain pin, wherein the two inner chain pieces respectively form circular chain roller convex portions at the two ends thereof, and the two inner chain pieces are juxtaposed and the circular chain roller convex portions of each other are arranged One end of the two outer chain pieces is respectively disposed outside one end of the two inner chain pieces, and is pivotally connected through the chain pin, and the sprocket contact is provided by the two inner chain pieces relative to the circular chain roller convex part. The part.

However, in the above-mentioned known three-element chain unit, the two inner chain pieces of the inner chain piece group are in contact with the side walls of the circular chain roller convex portions of each other, and the function of the chain roller is generated, but the inner chain piece is punched by the metal plate. The inner part of the circular chain roller portion of the inner chain piece is formed into a hollow shape, and the chain pin pivoted between the inner chain piece and the outer chain piece only contacts the length of the outer chain piece and the inner chain piece. In recent years, the trend of the chain towards thin and lightweight has been followed by internal and external links. The reduction causes the strength of the hollow circular chain roller portion of the inner chain piece to be insufficient, and it is difficult to bear the external force. Moreover, due to the insufficient strength of the inner chain piece, the inner chain piece is caused when the chain is wound around the sprocket. It is easy to be deformed and deformed, which causes the pitch of the chain to change and affects the transmission performance of the chain. Therefore, it is necessary to further strengthen the strength of the inner chain.

The main purpose of this creation is to provide a chain unit, which is used to create and then enhance the strength of the inner chain of the three-element chain unit of the existing chain.

In order to achieve the purpose of the previous disclosure, the chain unit proposed by the present invention comprises: two inner chain pieces, each of which has an inner chain piece arc segment at both ends, forming a circle on the inner side of the inner chain piece arc segment a chain roller portion, the end of the circular chain roller portion forms a side wall of the chain roller having an inner chain pin hole, and the inside of the circular chain roller portion forms an accommodating groove with an opening facing outward, the two inner chain pieces are arranged side by side, and the chain roller The sidewalls are in contact with each other; the four reinforcing gaskets are respectively disposed in the circular receiving grooves of the two inner chain pieces and are in contact with the circular chain roller portions, and the reinforcing gaskets each form a gasket pin hole; a chain piece, each of the two outer chain pieces has an outer chain piece arc segment at each end, and an outer chain pin hole is respectively arranged in the outer chain piece arc segment, and the two outer chain pieces each have an outer chain piece The arc segments are respectively disposed on the outer side of the inner chain piece of the two inner chain pieces and the outer side of the reinforcing pad; and a chain pin is threaded on the outer pin piece and the reinforcing pad pad In the inner pin hole of the pin hole and the inner chain piece, the outer chain of one end of the outer chain piece The circular arc segment, the inner chain arc segment at one end of the inner chain piece, and the reinforcing spacer are pivotally connected.

By the creation of the front chain unit, the utility model is characterized in that a reinforcing gasket is arranged inside the hollow circular chain roller portion of the two inner chain pieces, and the reinforcing gasket contacts the side wall of the circular chain roller portion for reinforcing the inner chain piece. The utility model provides good mechanical strength to the part where the chain pin is pivotally connected, and avoids deformation of the inner chain piece by force, so that the chain maintains good transmission stability during the transmission process.

1‧‧‧Internal link

10‧‧‧Internal chain arc segment

11‧‧‧Circular chain roller

12‧‧‧Chain roll side wall

13‧‧‧Circular receiving slot

14‧‧‧Inner chain pin hole

2‧‧‧Reinforced gasket

20‧‧‧shield pin hole

21‧‧‧ recess

3‧‧‧Outer link

30‧‧‧Outer chain segment

31‧‧‧Outer chain pin hole

4‧‧‧Chain

1 is a perspective exploded view of a preferred embodiment of the present inventive chain unit.

2 is a cross-sectional view showing a composite array of the preferred embodiment of the chain unit shown in FIG.

Figure 3 is a schematic cross-sectional view showing another preferred embodiment of the present inventive chain unit.

As shown in FIG. 1, a preferred embodiment of the present invention is disclosed. The chain unit comprises two inner chain pieces 1, four reinforcing spacers 2, two outer chain pieces 3, and a chain pin 4.

As shown in FIG. 1 , the inner chain piece 1 defines an inner side and an outer side on opposite sides thereof, and an inner chain piece arc segment 10 is integrally formed at two ends of the inner chain piece 1 , and the inner chain piece 1 is integrally formed. A circular chain roller portion 11 and a chain roller side wall 12 formed at the end of the circular chain roller portion 11 are protruded from the inner side surface of the inner chain segment 10, and an opening is formed in the circular chain roller portion 11 a receiving groove 13 on the side, the receiving groove 13 is circular, and an inner chain pin hole 14 is formed in the middle of the side wall 12 of the chain roller. The two inner chain pieces 1 are oppositely disposed on the inner side surface, and the side wall 12 of the chain roller is in contact with each other. The inner chain piece 1 can form a convex portion that protrudes outward in the middle portion between the two inner chain circular segments 10, so that the inner chain piece 1 has better strength.

As shown in FIG. 1 and FIG. 2 , the four reinforcing spacers 2 respectively receive the shape of the groove 13 . In the preferred embodiment, the receiving groove 13 of the inner chain piece 1 is circular. The reinforcing gasket 2 is a circular sheet body, and a gasket pin hole 20 is formed in the reinforcing gasket 2, and the four reinforcing gaskets 2 are respectively disposed corresponding to the two inner chain sheets 1 In the circular receiving groove 13, the peripheral edge of the reinforcing spacer 2 contacts the side wall of the circular chain roller portion 11, the side of the reinforcing spacer 2 contacts the side wall 12 of the chain roller, and the spacer pin hole 20 corresponds to the inner pin hole of the inner chain piece 1. 14. The reinforcing spacers 2 are placed in the inner chain piece 1 to be combined to enhance the strength of the inner chain piece 1.

As shown in FIG. 1 and FIG. 2, the reinforcing spacer 2 may be a solid sheet, or, as shown in FIG. 3, the reinforcing spacer 2 may also be a hollow sheet, wherein the reinforcing spacer 2 The concave portion 21 is formed at one side, and the concave portion 21 faces the side wall 12 of the chain roller of the inner chain piece 1.

As shown in FIG. 1 and FIG. 2, the outer chain piece 3 defines an inner side and an outer side on opposite sides thereof, and an outer chain piece arc segment 30 is integrally formed at two ends of the outer chain piece 3, the outer portion Each of the chain circular arc segments 30 has an outer chain pin hole 31, and the outer outer chain piece 3 is opposite to the inner chain piece circle of one end of the two inner chain pieces 1 with the outer chain segment arc segment 30 at one end thereof. Outside the arc segment 10, the outer chain pin hole 31 is formed for the inner chain pin hole 14 and the spacer pin hole 20, and the outer chain piece 3 is still formed in the middle portion between the two outer chain piece arc segments 30. The convex portion that protrudes inward or outward makes it have better strength.

As shown in FIG. 1 and FIG. 2, the chain pin 4 is threaded through the outer pin hole 31 of the outer chain piece 3, the spacer pin hole 20 of the reinforcing spacer 2, and the inner chain pin hole 14 of the inner chain piece 1. The outer chain arc segment 30 at one end of the two outer chain pieces 3 and the inner chain segment arc segment 10 at one end of the two inner chain pieces 1 are pivotally connected.

The inner chain piece 1 can be further filled with lubricating grease in the gap between the groove wall of the receiving groove 13 and the reinforcing pad 2, and the lubricating pin can be used for the chain pin 4 and the inner chain piece 1, the reinforcing pad 2, and the like. Lubrication to reduce friction between parts.

When the preferred embodiment of the present creative chain unit is applied to a chain, a plurality of chain elements are sequentially connected in series to form an annular chain, and the chain can be wound between the plurality of sprockets to provide a flexible transmission member. When the chain is driven between the sprocket wheels, as shown in FIG. 2, the original chain unit is abutted by the corresponding circular chain roller portions 11 of the two inner chain pieces 1, and the circular chain roller portion 11 is internally mounted. Reinforcing the gasket 2, and reinforcing the inner chain piece 11, providing good mechanical strength to the portion where the chain pin 4 is pivotally connected, and effectively avoiding the deformation of the inner chain piece to cause deformation, so that the chain is driven Maintain good transmission stability during the process.

1‧‧‧Internal link

10‧‧‧Internal chain arc segment

11‧‧‧Circular chain roller

12‧‧‧Chain roll side wall

13‧‧‧Circular receiving slot

14‧‧‧Inner chain pin hole

2‧‧‧Reinforced gasket

20‧‧‧shield pin hole

3‧‧‧Outer link

30‧‧‧Outer chain segment

31‧‧‧Outer chain pin hole

4‧‧‧Chain

Claims (5)

A chain unit comprises: two inner chain pieces, each of which has an inner chain piece arc segment at both ends thereof, and a circular chain roller part is formed on the inner side surface of the inner chain piece arc segment, and the circular chain roller The end of the portion is formed with a side wall of the chain roller having an inner chain pin hole, and the inside of the circular chain roller portion forms an accommodating groove with an opening facing outward, the two inner chain pieces are arranged side by side, and the side walls of the chain roller are relatively in contact; the four reinforcing gaskets, Correspondingly, they are respectively disposed in the circular receiving grooves of the two inner chain pieces and are in contact with the circular chain roller portions, wherein the reinforcing gaskets each form a gasket pin hole; two outer chain pieces, the two outer chain pieces Each end has an outer chain segment and an outer chain pin hole is arranged in each of the outer chain segments, and the two outer links are respectively disposed in the two with an outer chain segment The inner chain piece arc segment at one end of the chain piece and the outer side surface of the reinforcing pad; and a chain pin are disposed through the chain pin hole outside the outer chain piece, the gasket pin hole of the reinforcing pad and the inner chain piece In the chain pin hole, the outer chain piece arc segment at one end of the outer chain piece, the inner chain piece arc segment at one end of the inner chain piece, and the reinforcing pad are pivotally connected The chain unit according to claim 1, wherein the receiving groove inside the circular chain roller portion is circular, the reinforcing gasket is a circular plate body, and the peripheral edge of the reinforcing gasket contacts the side wall of the circular chain roller portion. The side of the reinforcing gasket contacts the side wall of the chain roller. The chain unit of claim 2, wherein the reinforcing spacer is a solid sheet. The chain unit of claim 2, wherein the reinforcing gasket A hollow sheet body having a concave portion formed on one side, the concave portion facing the side wall of the chain roller of the inner chain piece. The chain unit according to any one of claims 1 to 4, wherein the gap between the receiving groove wall of the inner chain piece and the reinforcing spacer is filled with lubricating grease.