Chain with locking structure

Abstract

The chain with the locking structure comprises a plurality of matching units which are connected with one another, each matching unit comprises an outer chain plate, an inner chain plate, a pin shaft, a shaft sleeve and a plug pin, the shaft sleeve is sleeved on the pin shaft, two ends of the shaft sleeve are connected with the outer chain plate and the inner chain plate through the plug pins, two ends of the pin shaft are provided with positioning holes, and the pin shaft and the shaft sleeve are connected through the plug pins. According to the chain, the pin shaft is sleeved with the shaft sleeve, then the two ends of the pin shaft are connected through the plug pin, the plug pin penetrates through the outer chain plate and the inner chain plate and is connected with the positioning holes in the two ends of the pin shaft in a locked mode, and therefore the plug pin, the pin shaft, the outer chain plate and the inner chain plate form a whole. And the locking structure can be unlocked through a plug pin, the length of the whole chain can be conveniently and temporarily adjusted to meet the use requirement, and when a certain position of the chain is damaged, part of the damaged matching units can be directly disassembled, and then the chain can be reused.

Description

Technical Field

[0001] This utility model relates to the field of chain technology, specifically to a chain with a locking structure. Background Technology

[0002] A drive chain is a chain-type transmission device that connects the various parts of a machine into a compact whole; it is a key component for improving mechanical performance. Drive chains can be classified into sealed chains and open chains based on their sealing properties. The main difference lies in whether a seal is used between the pin and the bushing.

[0003] However, in use, existing chains are prone to problems because the connection between the pin and the outer and inner chain plates is not secure. This can easily cause the pin to fall out of the through holes of the outer and inner chain plates, and the fallen pin is not easy to reassemble. Furthermore, most existing chains are fixed, making it difficult to adjust the chain length in real time according to needs. Utility Model Content

[0004] The purpose of this invention is to provide a chain with a locking structure to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A chain with a locking structure includes multiple interconnected mating units. Each mating unit includes an outer chain plate, an inner chain plate, a pin, a bushing, and a pin. The bushing is sleeved on the pin, and both ends of the bushing are connected to the outer chain plate and the inner chain plate via pins. Both ends of the pin are provided with positioning holes, and the pins are locked to the positioning holes.

[0007] Furthermore, a circular protrusion is fixedly provided at the center of the positioning hole, and a strip-shaped protrusion along the diameter direction of the positioning hole is fixedly connected to the protrusion. One end of the pin is provided with a groove corresponding to the protrusion. The diameter of the protrusion is the same as the width of the groove. Side grooves are provided on both sides of the groove, and a stop bar is provided in the middle of each side groove. The stop bars are symmetrical about the center line of the side groove.

[0008] Furthermore, the protruding rod and the stop rod are magnetic, and their magnetic attraction is mutual.

[0009] Furthermore, both the upper and lower ends of the outer and inner chain plates are provided with through holes of the same diameter, the diameter of the pin corresponds to the through hole, and a rotating plate is provided at the rear end of the pin, the diameter of the rotating plate being larger than the diameter of the through hole.

[0010] Furthermore, the pin is the same length as the bushing, and the pin passes through the through holes of the outer and inner chain plates in sequence and is locked in place with the positioning hole so that the rotating plate abuts against the outer chain plate.

[0011] Furthermore, the length of the protruding rod is less than the diameter of the pin, the side groove is semi-circular, and the diameter of the side groove is the same as that of the protruding rod.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects:

[0013] The chain of this utility model is fitted onto a pin shaft via a bushing, and the two ends of the pin shaft are connected by a pin. The pin passes through the outer chain plate and the inner chain plate and is locked to the positioning holes at both ends of the pin shaft, thereby forming a whole with the pin, the pin shaft, the outer chain plate and the inner chain plate. The locking structure can be released by the pin, which makes it convenient to temporarily adjust the length of the entire chain to meet the usage requirements. When a part of the chain is damaged, the damaged mating unit can be directly removed and reused. Attached Figure Description

[0014] Figure 1 This is a top view of the chain according to an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view showing the locking of the chain pin and the pivot pin according to an embodiment of the present invention;

[0016] Figure 3 The present invention provides a top view and a cross-sectional view of the pin of the chain according to an embodiment of the present invention.

[0017] Figure 4 The images show a top view and a cross-sectional view of the chain pin according to an embodiment of the present invention.

[0018] In the picture:

[0019] Outer link plate-1, inner link plate-2, pin-3, bushing-4, pin-5, positioning hole-6, protruding rod-7, groove-8, side groove-9, stop bar-10, rotating plate-11, protrusion-12. Detailed Implementation

[0020] To further explain the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0021] Reference Figure 1-4This utility model provides a chain with a locking structure, comprising multiple interconnected mating units. Each mating unit includes an outer chain plate 1, an inner chain plate 2, a pin 3, a bushing 4, and a pin 5. The bushing 4 is fitted onto the pin 3, and both ends of the bushing 4 are connected to the outer chain plate 1 and the inner chain plate 2 via the pin 5. Both ends of the pin 3 are provided with positioning holes 6, and the pin 5 is locked to the positioning holes 6. The chain is formed by connecting multiple mating units to form a closed structure. The pin 5 passes through the outer chain plate 1 and the inner chain plate 2 and locks with the positioning holes 6 on the pin 3, thereby making the various components a reliable whole. The pin 5 is detachable, which facilitates the immediate adjustment of the chain length as needed.

[0022] Furthermore, a circular protrusion 12 is fixedly provided at the center of the positioning hole 6. A strip-shaped protrusion 7 along the diameter direction of the positioning hole 6 is fixedly connected to the protrusion 12. One end of the pin 5 is provided with a groove 8 corresponding to the protrusion 7. The diameter of the protrusion 12 is the same as the width of the groove 8. Side grooves 9 are provided on both sides of the groove 8. A stop bar 10 is provided in the middle of each side groove 9. The stop bar 10 is symmetrical about the center line of the side groove 9. The protrusion 7 and the stop bar 10 are magnetic and attract each other. The sum of the heights of the protrusion 12 and the protrusion 7 is the same as the depth of the groove 8, and the height of the protrusion 12 is the same as the thickness of the bottom wall of the side groove 9. The pin 5 is inserted into the positioning hole 6 of the pin 3 so that the protrusion 7 enters the groove 8 of the pin 5. Then, the pin 5 is rotated to rotate the protrusion 7. The upper and lower ends of the protrusion 7 abut against the stop bar 10 in the side groove 9 and attract it magnetically, thereby fixing the pin 5.

[0023] Furthermore, both the upper and lower ends of the outer link plate 1 and the inner link plate 2 are provided with through holes of the same diameter. The diameter of the pin 5 corresponds to the through hole, and the rear end of the pin 5 is provided with a rotating plate 11. The diameter of the rotating plate 11 is larger than the diameter of the through hole. The pin 5 passes through the outer link plate 1 and the inner link plate 2 in sequence and is then inserted into the positioning hole 6 of the pin 3 for locking, so that the various components are reliably connected as one.

[0024] Furthermore, the length of the pin 3 is the same as the length of the bushing 4. The pin 5 passes through the through holes of the outer chain plate 1 and the inner chain plate 2 in sequence and is locked to the positioning hole 6 so that the rotating plate 11 abuts against the outer chain plate 1. When the pin 3 needs to be disassembled, the pin 5 is disengaged from the positioning hole 6 by rotating the rotating plate 11, which is convenient for disassembly and allows for temporary adjustment of the chain length.

[0025] Furthermore, the length of the protruding rod 7 is less than the diameter of the pin 5, the side groove 9 is semi-circular, and the diameter of the side groove 9 is the same as that of the protruding rod 7, so as to facilitate the rotation of the protruding rod 7 into the side groove 9.

[0026] In specific operation, the bushing 4 is placed on the pin 3, and then both ends of the pin 3 are aligned with the outer chain plate 1 and the inner chain plate 2, so that the through hole corresponds to the positioning hole 6 of the pin 3. Then, the pin 5 is passed through the through hole and inserted into the positioning hole 6, so that the rotating plate 11 abuts against the outer chain plate 1. When the pin 5 is inserted into the positioning hole 6 of the pin 3, the protrusion 7 enters the groove 8 of the pin 5. Then, the pin 5 is rotated, so that the protrusion 7 rotates. The upper and lower ends of the protrusion 7 abut against the stop bar 10 in the side groove 9 and are magnetically attracted to it, thereby fixing the pin 5. In this way, the various components are reliably connected as one. When it is necessary to disassemble the pin 3, the pin 5 is disengaged from the positioning hole 6 by rotating the rotating plate 11, which is convenient for disassembly and allows for temporary adjustment of the chain length.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A chain having a locking structure, characterized by: The application relates to a connecting device comprising a plurality of mutually connected fitting units, wherein the fitting units comprise an outer chain plate, an inner chain plate, a pin shaft, a shaft sleeve and a bolt, the shaft sleeve is sleeved on the pin shaft, the outer chain plate and the inner chain plate are connected to the two ends of the shaft sleeve through the bolt, the pin shaft is provided with positioning holes at the two ends, and the bolt is locked with the positioning holes.

2. The chain with locking structure according to claim 1, characterized in that: A circular convex part is fixedly arranged at the center of the positioning hole, a strip-shaped convex rod along the diameter direction of the positioning hole is fixedly connected to the convex part, one end of the bolt is provided with a groove corresponding to the convex rod, the diameter of the convex part is the same as the width of the groove, side grooves are arranged at the two sides of the groove, and a stop rod is arranged in the middle of each side groove.

3. The chain with locking structure according to claim 2, characterized in that: The convex rod and the stop rod have magnetism and are attracted to each other.

4. The chain with locking structure according to claim 1, characterized in that: The upper and lower ends of the outer chain plate and the inner chain plate are provided with through holes with the same diameter, the diameter of the bolt corresponds to the diameter of the through hole, and the rear end of the bolt is provided with a rotating plate with a diameter larger than that of the through hole.

5. The chain with locking structure according to claim 1, characterized in that: The length of the pin shaft is the same as that of the shaft sleeve, the bolt passes through the through holes of the outer chain plate and the inner chain plate in sequence and is locked with the positioning hole so that the rotating plate abuts against the outer chain plate.

6. The chain with locking structure according to claim 2, characterized in that: The length of the convex rod is smaller than the diameter of the bolt, the side groove is semicircular, and the diameter of the side groove is the same as that of the convex rod.

Images