Anti-stuck cylindrical pin
By installing an anti-jamming component on the cylindrical pin, the problem of jamming during insertion and removal of the cylindrical pin is solved by utilizing the flow and discharge of lubricating oil, thus achieving smooth insertion and removal and convenient disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG RUILI SPECIAL FASTENER CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-14
AI Technical Summary
Existing cylindrical pins are prone to getting stuck due to dust or burrs during insertion and removal, affecting ease of use.
An anti-jamming component is installed on the cylindrical pin, including a flow hole, a threaded inner sleeve, a threaded outer sleeve, a storage chamber, a torsion head, and a rotating drum. By rotating the torsion head, the rotating drum rotates synchronously, realizing the flow and discharge of lubricating oil and ensuring smooth insertion and removal.
It effectively prevents the cylindrical pin from getting stuck, improves the smoothness of insertion and removal, and facilitates disassembly and cleaning, thus enhancing ease of use.
Smart Images

Figure CN224497033U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylindrical pin technology, specifically a cylindrical pin that can prevent jamming. Background Technology
[0002] A cylindrical pin is a mechanical part used to fix components, transmit power, or act as a positioning element. Cylindrical pins are generally made of high-quality carbon structural steel, commonly C35 and C45, and may undergo heat treatment when necessary.
[0003] In mechanical structures, existing cylindrical pins are important auxiliary parts for assembly and processing. They are fixed in holes by interference fit for positioning and connection.
[0004] However, in actual use, although the above-mentioned device can easily insert the cylindrical pin into the hole to be fixed, dust or debris may adhere to the hole during periodic insertion and removal, which will affect the insertion and removal of the cylindrical pin. Or, insertion and removal in the hole with burrs may easily cause jamming. In view of this, we propose a cylindrical pin that can prevent jamming. Utility Model Content
[0005] The purpose of this invention is to provide a cylindrical pin that can prevent jamming, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical pin that can prevent jamming, including a pin, an anti-jamming component provided on the outer wall of the pin, the anti-jamming component including a flow hole, the flow hole being opened on the inner wall of the pin, a threaded inner sleeve fixedly connected to the outer wall of the pin, a fixed sleeve fixedly connected to the outer wall of the pin, a flow hole being opened on the outer wall of the fixed sleeve, and a threaded outer sleeve being threadedly connected to the outer wall of the threaded inner sleeve;
[0007] The storage compartment is fixedly connected to the outer wall of the threaded sleeve. A toggle head is rotatably installed on the inner wall of the storage compartment. A rotating cylinder is fixedly connected to the outer wall of the toggle head. A flow hole is provided on the outer wall of the rotating cylinder. An end cap is provided on the outer wall of the storage compartment.
[0008] Preferably, the center line of the inner threaded sleeve, the center line of the outer threaded sleeve, and the center line of the pin are all on the same straight line.
[0009] Preferably, the inner wall of the rotating cylinder is adapted to the outer wall of the fixed sleeve, so that the rotating cylinder can fit the fixed sleeve smoothly and tightly.
[0010] Preferably, the number of flow holes is several, and the several flow holes are arranged in a circular array on the outer wall of the fixed sleeve.
[0011] Preferably, the outer wall of the pin is provided with a discharge positioning component, the discharge positioning component includes a discharge side groove, the discharge side groove is formed on the outer wall of the pin, the outer wall of the twist head is provided with a movement mark, and the outer wall of the storage compartment is provided with a fixation mark.
[0012] Preferably, the number of discharge side grooves is several, and the several discharge side grooves are arranged in a circumferential array on the outer wall of the pin.
[0013] Preferably, the fixed identifier is set in two sets, and the two sets of fixed identifiers are set on both sides of the center plane of the storage compartment.
[0014] Compared with the prior art, this utility model provides a cylindrical pin that can prevent jamming, and has the following characteristics:
[0015] Beneficial effects:
[0016] 1. This anti-jamming cylindrical pin allows for easy insertion into the desired hole during daily use. When inserting or removing the pin, rotating the head causes the rotating drum to rotate synchronously, aligning the second flow hole on the drum with the first flow hole on the fixing sleeve. This allows the lubricating oil in the storage compartment to flow smoothly and be discharged through the flow hole on the pin, ensuring smooth insertion and removal and preventing jamming. The threaded inner and outer sleeves facilitate easy disassembly and cleaning, ensuring overall ease of use.
[0017] 2. The anti-jamming cylindrical pin, when the rotating head makes the drum rotate synchronously, the set moving and fixed marks can further show the overlap of the flow hole one and flow hole two at this time, ensuring that the operator can easily install the pin and that the lubricating oil can be effectively discharged. The set discharge side groove can increase the range of lubricating oil diversion, thereby allowing the pin to be better inserted and removed, and preventing the pin from getting stuck. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the flow hole structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the threaded inner sleeve structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the flow hole structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the rotating drum structure of this utility model.
[0023] In the diagram: 1. Pin; 2. Anti-jamming component; 201. Flow hole; 202. Threaded inner sleeve; 203. Fixing sleeve; 204. Flow hole one; 205. Threaded outer sleeve; 206. Storage compartment; 207. Twist head; 208. Rotary drum; 209. Flow hole two; 210. End cap; 3. Discharge positioning component; 301. Discharge side groove; 302. Movement indicator; 303. Fixing indicator. Detailed Implementation
[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a cylindrical pin that can prevent jamming, including a pin 1, an anti-jamming component 2 provided on the outer wall of the pin 1, the anti-jamming component 2 including a flow hole 201, the flow hole 201 being opened on the inner wall of the pin 1, a threaded inner sleeve 202 fixedly connected to the outer wall of the pin 1, a fixing sleeve 203 fixedly connected to the outer wall of the pin 1, a flow hole 204 being opened on the outer wall of the fixing sleeve 203, and a threaded outer sleeve 205 being threadedly connected to the outer wall of the threaded inner sleeve 202.
[0025] Furthermore, the storage chamber 206 is fixedly connected to the outer wall of the threaded sleeve 205, and a toggle head 207 is rotatably installed on the inner wall of the storage chamber 206. A rotating cylinder 208 is fixedly connected to the outer wall of the toggle head 207. A flow hole 209 is opened on the outer wall of the rotating cylinder 208, and an end cap 210 is provided on the outer wall of the storage chamber 206.
[0026] In the embodiments of this utility model, the center line of the inner threaded sleeve 202, the center line of the outer threaded sleeve 205, and the center line of the pin 1 are all on the same straight line. The inner wall of the rotating cylinder 208 is adapted to the outer wall of the fixed sleeve 203, so that the rotating cylinder 208 can fit the fixed sleeve 203 smoothly and tightly. The number of flow holes 204 is several, and the several flow holes 204 are arranged in a circumferential array on the outer wall of the fixed sleeve 203.
[0027] Furthermore, the outer wall of the pin 1 is provided with a discharge positioning component 3, which includes a discharge side groove 301. The discharge side groove 301 is opened on the outer wall of the pin 1. The outer wall of the twist head 207 is provided with a movement mark 302, and the outer wall of the storage compartment 206 is provided with a fixing mark 303. The number of discharge side grooves 301 is several, and the several discharge side grooves 301 are arranged in a circumferential array on the outer wall of the pin 1. The number of fixing marks 303 is two sets, and the two sets of fixing marks 303 are mirror images of the center plane of the storage compartment 206 on both sides.
[0028] In this utility model, during daily use, the pin 1 can be conveniently inserted into the hole to be fixed. When inserting and removing the pin, the rotating head 207 can be rotated to make the rotating drum 208 rotate synchronously, so that the second flow hole 209 on the rotating drum 208 can coincide with the first flow hole 204 on the fixing sleeve 203, thereby allowing the lubricating oil in the storage chamber 206 to flow smoothly and be discharged through the flow hole 201 on the pin 1, ensuring the smoothness of the pin 1 when inserting and removing it and preventing the pin 1 from getting stuck. The threaded inner sleeve 202 and the threaded outer sleeve 205 can be easily disassembled and cleaned, ensuring the overall convenience of use.
[0029] When the rotating head 207 causes the rotating drum 208 to rotate synchronously, the moving indicator 302 and the fixed indicator 303 can further show the overlap of the flow hole 1 204 and the flow hole 209 at this moment, ensuring that the operator can easily install the pin 1 and that the lubricating oil can be effectively discharged. The discharge side groove 301 can increase the range of lubricating oil diversion, so that the pin 1 can be better inserted and removed, and prevent the pin 1 from getting stuck.
[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A cylindrical pin capable of preventing jamming, comprising a pin (1), characterized in that: The outer wall of the latch (1) is provided with an anti-jamming component (2), the anti-jamming component (2) comprising: A flow hole (201) is formed on the inner wall of the pin (1). A threaded inner sleeve (202) is fixedly connected to the outer wall of the pin (1). A fixed sleeve (203) is fixedly connected to the outer wall of the pin (1). A flow hole (204) is formed on the outer wall of the fixed sleeve (203). A threaded outer sleeve (205) is threadedly connected to the outer wall of the threaded inner sleeve (202). Storage compartment (206) is fixedly connected to the outer wall of threaded sleeve (205). A toggle head (207) is rotatably installed on the inner wall of the storage compartment (206). A rotating cylinder (208) is fixedly connected to the outer wall of the toggle head (207). A flow hole (209) is opened on the outer wall of the rotating cylinder (208). An end cap (210) is provided on the outer wall of the storage compartment (206).
2. The anti-jamming cylindrical pin according to claim 1, characterized in that: The centerline of the inner threaded sleeve (202), the centerline of the outer threaded sleeve (205), and the centerline of the pin (1) are all on the same straight line.
3. A cylindrical pin capable of preventing jamming according to claim 1, characterized in that: The inner wall of the rotating cylinder (208) is adapted to the outer wall of the fixed sleeve (203).
4. A cylindrical pin capable of preventing jamming according to claim 1, characterized in that: The number of flow holes (204) is several, and the several flow holes (204) are arranged in a circumferential array on the outer wall of the fixed sleeve (203).
5. A cylindrical pin capable of preventing jamming according to claim 1, characterized in that: The outer wall of the pin (1) is provided with a discharge positioning component (3), the discharge positioning component (3) includes a discharge side groove (301), the discharge side groove (301) is opened on the outer wall of the pin (1), the outer wall of the twist head (207) is provided with a movement mark (302), and the outer wall of the storage compartment (206) is provided with a fixed mark (303).
6. A cylindrical pin capable of preventing jamming according to claim 5, characterized in that: The number of discharge side grooves (301) is several, and the several discharge side grooves (301) are arranged in a circumferential array on the outer wall of the pin (1).
7. A cylindrical pin capable of preventing jamming according to claim 5, characterized in that: The fixed markers (303) are set in two sets, and the two sets of fixed markers (303) are set on both sides of the center plane of the storage compartment (206).