Roller chain with edge pressing structure

Abstract

The utility model discloses a roller chain with an edge pressing structure. The roller chain comprises a plurality of chain links, a connecting shaft and an outer chain plate, each chain link comprises two inner chain plates which are arranged left and right, edge pressing structures are arranged on the inner sides or the outer sides of the inner chain plates, first mounting holes are formed in the front ends and the rear ends of the two inner chain plates, the chain links further comprise two connecting sleeves, the two connecting sleeves are arranged at the front ends and the rear ends of the inner chain plates, and the ends of the connecting sleeves are tightly matched in the first mounting holes of the corresponding inner chain plates. The connecting shaft penetrates through the connecting sleeve and is rotationally connected with the connecting sleeve, an annular groove is formed along the inner circumference of the connecting sleeve, a fixing block is fixedly connected to the side face of the connecting shaft and arranged in the annular groove, and the left side and the right side of the fixing block make contact with the side wall of the annular groove. An edge pressing structure is arranged on the inner side or the outer side of the outer chain plate, and every two adjacent chain links are connected through a connecting shaft and the outer chain plate. The utility model provides a roller chain with an edge pressing structure, which can prevent a connecting shaft from axially moving.

Description

Technical Field

[0001] The utility model relates to the technical field of roller chains, in particular to a roller chain with a pressure edge structure. Background Art

[0002] The existing roller chain with a pressure plate structure refers to application number CN2020202227025, which includes an inner link plate, an outer link plate, a sleeve, a roller and a connecting shaft; the inner link plate and the outer link plate are connected in series through the sleeve, the roller and the connecting shaft; in order to facilitate the distinction between the front and back sides of the inner link plate and the outer link plate for assembly, a pressure edge structure is provided on the outer side of the inner link plate and the outer link plate along the entire outer periphery.

[0003] The connecting shaft of the existing roller chain can move freely relative to the shaft sleeve; when there is a gap between the inner link plate and the outer link plate due to assembly error, the connecting shaft is prone to axial movement when the roller chain is in use, causing the inner link plate to hit the outer link plate, which in turn causes the outer link plate to fall off. Utility Model Content

[0004] In order to solve the shortcoming of the existing roller chain that the connecting shaft is prone to axial movement, the utility model provides a roller chain with a pressure edge structure, which can prevent the connecting shaft from axial movement.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A roller chain with a pressure edge structure comprises: multiple chain links, a connecting shaft and an outer link plate; the chain link comprises two inner link plates arranged on the left and right, the inner or outer side of the inner link plate is provided with a pressure edge structure, and the front and rear ends of the two inner link plates are provided with first mounting holes, the chain link also comprises two connecting sleeves, the two connecting sleeves are arranged at the front and rear ends of the inner link plate, and the ends of the connecting sleeves are tightly fitted in the first mounting holes of the corresponding inner link plates; the connecting shaft passes through the connecting sleeve and is rotatably connected to the connecting sleeve, an annular groove is provided along the inner circumference of the connecting sleeve, a fixed block is fixedly connected to the side of the connecting shaft, the fixed block is provided in the annular groove, and the left and right sides of the fixed block are in contact with the side walls of the annular groove; the inner or outer side of the outer link plate is provided with a pressure edge structure, and two adjacent chain links are connected by the connecting shaft and the outer link plate.

[0007] Through the above arrangement, firstly, a pressure edge structure is provided on the inner link plate and the outer link plate, which makes it easy to distinguish the front and back sides of the inner link plate and the outer link plate, thereby facilitating assembly; secondly, the fixing block and the annular groove prevent axial movement of the connecting shaft, thereby improving the stability of the roller chain structure.

[0008] Furthermore, the connecting sleeve includes: a roller and a sleeve; both ends of the roller are in contact with the inner side of the inner link plate; the inner sides of both ends of the roller are tightly fitted with a sleeve, an annular groove is formed between the sleeve and the roller, and the end of the sleeve away from the annular groove is tightly fitted in the first mounting hole.

[0009] The above arrangement facilitates the processing of the connecting sleeve and the installation of the connecting shaft.

[0010] Furthermore, the edge holding structure is configured as a chamfer.

[0011] Furthermore, edge pressing structures are provided at the front and rear ends of the inner link plate along the circumferential direction.

[0012] The above arrangement prevents the edge pressing structure from weakening the tensile strength of the middle portion of the inner link plate.

[0013] Furthermore, edge pressing structures are provided at the front and rear ends of the outer link plate along the circumferential direction.

[0014] The above arrangement prevents the edge pressing structure from weakening the tensile strength of the middle portion of the outer link plate.

[0015] Furthermore, second mounting holes are provided at the front and rear ends of the outer link plate, the end of the connecting shaft is tightly fitted in the second mounting hole, and the end of the outer link plate is attached to the outer side of the inner link plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of a roller chain according to an embodiment.

[0017] Figure 2 2 is a top view of the roller chain according to the embodiment.

[0018] Figure 3 2 is a cross-sectional view of a roller chain according to an embodiment. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3 As shown, a roller chain with a pressure edge structure includes: multiple chain links 3, a connecting shaft 4 and an outer link plate 5; the chain link 3 includes two inner link plates 31 arranged on the left and right, and a pressure edge structure 6 is provided on the inner or outer side of the inner link plate 31, and the first mounting holes 311 are provided at the front and rear ends of the two inner link plates 31. The chain link 3 also includes two connecting sleeves 32, which are arranged at the front and rear ends of the inner link plate 31, and the ends of the connecting sleeves 32 are tightly fitted in the first mounting holes 311 of the corresponding inner link plates 31; the connecting shaft 4 passes through the connecting sleeve 32 and is rotatably connected to the connecting sleeve 32, and an annular groove 321 is provided along the inner circumference of the connecting sleeve 32, and a fixing block 41 is fixedly connected to the side of the connecting shaft 4, and the fixing block 41 is arranged in the annular groove 321, and the left and right sides of the fixing block 41 are in contact with the side walls of the annular groove 321; a pressure edge structure 6 is provided on the inner or outer side of the outer link plate 5, and two adjacent chain links 3 are connected to the outer link plate 5 through the connecting shaft 4.

[0021] Through the above arrangement, first, a pressure edge structure 6 is provided on the inner link plate 31 and the outer link plate 5, which makes it easy to distinguish the front and back sides of the inner link plate 31 and the outer link plate 5, thereby facilitating assembly; second, the fixing block 41 and the annular groove 321 prevent axial movement of the connecting shaft 4, thereby improving the stability of the roller chain structure.

[0022] In this application, Figure 1 The front, rear, left, and right directions of the roller chain are indicated in the figure; the two inner link plates 31 in the link 3 are parallel to each other and extend in the front-rear direction; the connecting sleeve 32 extends in the left-right direction, and both ends are tightly fitted in the first mounting holes 311 of the inner link plates 31 on the left and right sides to lock the two inner link plates 31 together; the annular groove 321 is provided in the middle of the connecting sleeve 32; the fixing block 41 is annular and is provided around the outer periphery of the connecting shaft 4; the left and right sides of the fixing block 41 are respectively in contact with the side walls of the annular groove 321 to prevent the connecting shaft 4 from moving left and right in the connecting sleeve 32, thereby improving the axial stability of the connecting shaft 4 ; The front end of the outer link plate 5 is installed on the end of the connecting shaft 4 of the front link 3, and the rear end of the outer link plate 5 is installed on the end of the connecting shaft 4 of the rear link 3. Outer link plates 5 are provided on both sides of the left and right sides of the link 3. The inner side of the outer link plate 5 contacts the side surface of the link 3, further preventing the link 3 from moving left and right during movement; when the roller chain is moving, the connecting shaft 4 rotates around the axis of the connecting shaft 4 in the connecting sleeve 32. Under the action of the fixing block 41 and the annular groove 321, the connecting shaft 4 will not move left and right, thereby preventing the link 3 from moving left and right and hitting the outer link plate 5, reducing the possibility of the outer link plate 5 falling off.

[0023] As an implementation method, the connecting sleeve 32 includes: a roller 322 and a sleeve 323; both ends of the roller 322 are in contact with the inner side of the inner link plate 31; the inner sides of both ends of the roller 322 are tightly fitted with the sleeve 323, and an annular groove 321 is formed between the sleeve 323 and the roller 322, and the end of the sleeve 323 away from the annular groove 321 is tightly fitted in the first mounting hole 311.

[0024] The above arrangement facilitates the processing of the connecting sleeve 32 and the installation of the connecting shaft 4 .

[0025] When the cam 323 is in the unlock position, the left end of the roller 322 is tightened to the inner end of the sleeve 323, and the left end of the roller 322 is tightened to the inner end of the sleeve 323. The left end of the connecting shaft 4 is inserted into the sleeve 323, and the fixing block 41 of the connecting shaft 4 contacts the inner end of the sleeve 323. The inner link plate 31 on the right side is attached to the right end of the roller 322. The sleeve 323 on the right side is inserted into the first mounting hole 311 of the inner link plate 31 on the right side and the right end of the roller 322. The installation of the sleeve 323 on the right side is completed, and the outer end of the sleeve 323 on the right side is flush with the outer side of the inner link plate 31 on the right side; the inner end of the sleeve 323 on the right side contacts the fixing block 41. At this point, the chain link 3 and the connecting shaft 4 are installed.

[0026] As an implementation method, the edge holding structure 6 is configured as a chamfer.

[0027] As an implementation method, edge pressing structures 6 are provided along the circumferential direction at the front and rear ends of the inner link plate 31 .

[0028] The above arrangement prevents the edge pressing structure 6 from weakening the tensile strength of the middle portion of the inner link plate 31 .

[0029] The existing roller chain's edge pressing structure 6 is arranged on the entire outer circumference of the inner link plate 31, which reduces the cross-section of the middle part of the inner link plate 31, thereby reducing the tensile strength of the middle part of the inner link plate 31, and the middle part of the inner link plate 31 is easily broken; the inner link plate 31 of the present application is only provided with the edge pressing structure 6 at both ends, which will not reduce the cross-section of the middle part of the inner link plate 31.

[0030] As an implementation method, edge pressing structures 6 are provided at the front and rear ends of the outer link plate 5 along the circumferential direction.

[0031] The above arrangement prevents the edge pressing structure 6 from weakening the tensile strength of the middle portion of the outer link plate 5 .

[0032] As an implementation method, second mounting holes 51 are provided at both ends of the outer link plate 5 , the end of the connecting shaft 4 is tightly fitted in the second mounting hole 51 , and the end of the outer link plate 5 is attached to the outside of the inner link plate 31 .

[0033] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A roller chain with a pressure edge structure, characterized in that: include: A plurality of chain links, each chain link comprising two inner link plates disposed on the left and right sides, each inner link plate being provided with a press edge structure on its inner or outer sides, each inner link plate being provided with a first mounting hole at both front and rear ends, and each chain link further comprising two connecting sleeves disposed at both front and rear ends of the inner link plates, with ends of the connecting sleeves tightly fitted in the first mounting holes of the corresponding inner link plates; a connecting shaft, the connecting shaft passing through the connecting sleeve and being rotatably connected to the connecting sleeve, an annular groove being provided along the inner circumference of the connecting sleeve, a fixing block being fixedly connected to a side surface of the connecting shaft, the fixing block being provided in the annular groove, and the left and right sides of the fixing block being in contact with the side walls of the annular groove; The outer link plate is provided with a pressure edge structure on the inner side or the outer side of the outer link plate, and two adjacent chain links are connected to the outer link plate through the connecting shaft.

2. The roller chain with a pressure edge structure according to claim 1, characterized in that: The connecting sleeve includes: A roller, both ends of which are in contact with the inner side of the inner link plate; The sleeve is tightly fitted on the inner sides of both ends of the roller, the annular groove is formed between the sleeve and the roller, and the end of the sleeve away from the annular groove is tightly fitted in the first mounting hole.

3. The roller chain with a pressure edge structure according to claim 1, characterized in that: The edge pressing structure is configured as a chamfer.

4. The roller chain with a pressure edge structure according to claim 3, characterized in that: The edge pressing structure is provided at the front and rear ends of the inner link plate along the circumferential direction.

5. The roller chain with a pressure edge structure according to claim 3, characterized in that: The edge pressing structure is provided at the front and rear ends of the outer link plate along the circumferential direction.

6. The roller chain with a pressure edge structure according to claim 2, characterized in that: The outer link plate is provided with second mounting holes at both ends thereof, the end of the connecting shaft is tightly fitted in the second mounting hole, and the end of the outer link plate is attached to the outer side of the inner link plate.

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