Anti-exit new pin needle

Abstract

The utility model discloses a novel pin needle of preventing exit, including inner pin tube, outer pin tube and bracing piece, the inner pin tube sliding installation in the outer pin tube inner wall, the outer pin tube lower extreme outer wall is equipped with a pair of first recess, a pair of first recess all are equipped with pin shaft and installed, the bracing piece is installed in the first recess, and the bracing piece one end is connected with the pin shaft rotation, the outer pin tube bottom inner wall fixed mounting has the axle seat, the axle seat is rotationally installed with the threaded tube, the inner pin tube inner wall is equipped with the thread, the threaded tube is screwed in the inner pin tube inner wall, the threaded tube inner wall fixed mounting has the connecting sleeve, be equipped with the clamping slot on the connecting sleeve, the connecting sleeve is inserted and is installed with the pivot, has solved the problem that the existing pin needle uses in the process to be easy to exit from the pin hole, and this utility model can be adjusted in the effective length flexibly, can be matched with different size pin hole, can avoid the scratch with other moving parts as far as possible.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology for power equipment installation, specifically a novel anti-removal pin. Background Technology

[0002] During the installation of electrical equipment, pins are typically used to fix and connect two or more components and provide a certain holding force. These pins are inserted into pin holes to prevent relative movement or loosening of the components. Commonly used pins in the prior art include cotter pins and closed pins. These pins are usually formed from a single piece of elastic steel, with a simple structure that facilitates disassembly and reconnection. When using these pins, the appropriate pin model must be selected based on the pin hole diameter. However, the length of the pin that matches the pin hole diameter often does not perfectly match the hole length. If the pin protrudes too far from the pin hole, it is prone to scraping against other moving parts, causing wear and eventual removal. Furthermore, commonly used cotter pins require bending one end with a tool during use, which can easily lead to breakage if not handled properly. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a novel anti-removal pin, which solves the problem that existing pins are prone to retracting from the pin hole after prolonged use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel anti-retraction pin, comprising an inner pin tube, an outer pin tube, and a support rod. The inner pin tube is slidably installed on the inner wall of the outer pin tube. The lower outer wall of the outer pin tube has a pair of first grooves, each containing a pin shaft. The support rod is installed in one of the first grooves, with one end of the support rod rotatably connected to the pin shaft. A shaft seat is fixedly installed on the bottom inner wall of the outer pin tube, and a threaded tube is rotatably installed on the shaft seat. The inner wall of the inner pin tube has threads, and the threaded tube is screwed onto the inner wall of the inner pin tube. A connecting sleeve is fixedly installed on the inner wall of the threaded tube, and the connecting sleeve has a slot. A rotating shaft is inserted into the connecting sleeve, and a pair of locking pins are provided at the upper end of the rotating shaft. The lower end of the rotating shaft penetrates the bottom of the outer pin tube, and a knob is connected to the end of the rotating shaft extending out of the outer pin tube.

[0005] Preferably, the upper end of the knob is provided with a threaded sleeve, the bottom outer wall of the outer pin tube is provided with a threaded cap, the threaded sleeve is screwed onto the outer wall of the threaded cap, a spring is installed inside the threaded cap, and the extension end of the spring is connected to the knob.

[0006] Preferably, the upper end of the inner pin tube is provided with a pair of second grooves, and a spring support piece is fixedly installed in each pair of second grooves.

[0007] Preferably, the inner wall of the inner pin tube is provided with a limiting groove, and the outer wall of the inner pin tube is provided with a limiting key (2-2), the limiting key sliding on the inner wall of the limiting groove.

[0008] Preferably, a pull ring is rotatably connected to the top end of the inner pin tube.

[0009] Beneficial effects

[0010] This utility model provides a novel anti-rejection pin, which has the following beneficial effects: 1. This device uses a pair of support rods on the outer pin tube for limiting. The support rods are rotatably installed in the groove of the outer pin tube. The groove can limit the maximum extension angle of the support rods to the horizontal position. At the same time, this device is a telescopic structure. After installation, the device can be shortened so that the support rods contact the outer edge of the pin hole, thereby preventing the support rods from returning to their original position, thus achieving the function of preventing withdrawal.

[0011] 2. At the same time, since this device is a telescopic structure, the inner pin tube is slidably installed on the inner wall of the outer pin tube. By adjusting the extension and retraction of the threaded tube on the inner wall of the outer pin tube, the effective length of this device can be adjusted to adapt to pin holes of different sizes.

[0012] 3. Because the length of this device is adjustable, the part of the device exposed outside the pin hole is relatively short, and the pull ring can rotate axially along the inner pin tube or radially along the connection with the inner pin tube. After installation, the pull ring can be rotated to a suitable position to avoid scratching with other moving parts as much as possible. Attached Figure Description

[0013] Figure 1 This is a front sectional view of the present invention.

[0014] Figure 2 This is an enlarged view of section B of this utility model.

[0015] Figure 3 This is a cross-sectional view of the present invention, A_A.

[0016] Figure 4 This is an enlarged view of section A in this utility model.

[0017] Figure 5 This is a cross-sectional view of the present invention, B_B.

[0018] Figure 6 This is a schematic diagram showing the connection between the connecting sleeve and the rotating shaft in this practical application.

[0019] In the diagram: 1. Pull ring; 2. Inner pin tube; 2-1. Second groove; 2-2. Limit key; 3. Spring support plate; 4. Outer pin tube; 4-1. First groove; 4-2. Limit groove; 4-3. Pin shaft; 5. Threaded tube; 6. Support rod; 7. Threaded cap; 8. Knob; 8-1. Threaded sleeve; 9. Spring; 10. Shaft seat; 11. Connecting sleeve; 12. Rotating shaft; 13. Locking pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution: a novel anti-retraction pin, comprising an inner pin tube 2, an outer pin tube 4, and a support rod 6. The inner pin tube 2 is slidably mounted on the inner wall of the outer pin tube 4. The lower outer wall of the outer pin tube 4 has a pair of first grooves 4-1, each containing a pin shaft 4-3. The support rod 6 is mounted within the first grooves 4-1, with one end of the support rod 6 rotatably connected to the pin shaft 4-3. The bottom inner wall of the outer pin tube 4 is fixed. A bearing seat 10 is installed, and a threaded tube 5 is rotatably installed on the bearing seat 10. The inner wall of the inner pin tube 2 is threaded, and the threaded tube 5 is screwed into the inner wall of the inner pin tube 2. A connecting sleeve 11 is fixedly installed on the inner wall of the threaded tube 5. The connecting sleeve 11 is provided with a slot. A rotating shaft 12 is inserted into the connecting sleeve 11. A pair of locking pins 13 are provided at the upper end of the rotating shaft 12. The lower end of the rotating shaft 12 passes through the bottom of the outer pin tube 4. A knob 8 is connected to one end of the rotating shaft 12 that extends out of the outer pin tube 4. The shaft 12 slides downward along the axial direction, allowing a pair of locking pins 13 at the upper end of the shaft 12 to fall into the slots of the connecting sleeve 11. Rotating the knob 8 rotates the shaft 12, which drives the threaded tube 5 to rotate through the locking pins 13 and the connecting sleeve 11. When the threaded tube 5 rotates, it can drive the inner pin tube 2 to move up and down on the inner wall of the outer pin tube 4. When in use, after inserting the device into the pin hole, adjust the knob 8 to extend the device until the first groove is completely exposed outside the pin hole. At this time, the support rod 6 is unfolded. The first groove can limit the maximum unfolding angle of the support rod 6 to the horizontal position. Rotating the knob 8 in the opposite direction can shorten the device so that the support rod 6 contacts the outer edge of the pin hole. At this time, the pair of support rods 6 can prevent the device from exiting the pin hole.

[0022] Furthermore, the upper end of the knob 8 is provided with a threaded sleeve 8-1, the bottom outer wall of the outer pin tube 4 is provided with a threaded cover 7, the threaded sleeve 8-1 is screwed onto the outer wall of the threaded cover 7, and a spring 9 is installed inside the threaded cover 7. The telescopic end of the spring 9 is connected to the knob 8. When the threaded sleeve 8-1 is screwed onto the threaded cover 7, the spring 9 is in a compressed state, the locking pin 13 at one end of the rotating shaft 12 does not contact the connecting sleeve 11, and the rotating shaft 12 is not linked with the threaded tube 5. This can prevent the inner pin tube 2 from extending or retracting within the outer pin tube 4 due to misoperation or other factors. When it is necessary to adjust the length of this device, rotate the knob 8 to disengage the threaded sleeve 8-1 from the threaded cover 7. At this time, the spring 9 can pop out the knob 8. The knob 8 drives the rotating shaft 12 to slide downward along the axial direction, so that a pair of locking pins 13 at the upper end of the rotating shaft 12 fall into the slot of the connecting sleeve 11, so that the rotating shaft 12 is linked with the threaded tube 5.

[0023] Furthermore, the upper end of the inner pin tube 2 is provided with a pair of second grooves 2-1, and a spring support plate 3 is fixedly installed in each pair of second grooves 2-1; When the inner pin tube 2 extends to the second groove 2-1 and is completely exposed above the outer pin tube 4, the spring support plate 3 springs open and supports the inner wall of the pin hole. At this time, the spring support plate 3 can prevent the device from shaking in the pin hole.

[0024] Furthermore, the inner wall of the outer pin tube 4 is provided with a limiting groove 4-2, and the outer wall of the inner pin tube 2 is provided with a limiting key 2-2, the limiting key 2-2 sliding on the inner wall of the limiting groove 4-2; The limiting groove 4-2 and the limiting key 2-2 work together to prevent the inner pin tube 2 and the outer pin tube 4 from rotating relative to each other.

[0025] Furthermore, a pull ring 1 is rotatably connected to the top end of the inner pin tube 2; The pull ring 1 facilitates the carrying and disassembly of this device. At the same time, the pull ring 1 can rotate axially along the inner pin tube 2 or radially along the connection with the inner pin tube 2, which can prevent scratching with other equipment parts.

[0026] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0027] Example: In the initial state, the inner pin tube 2 is fully retracted into the outer pin tube 4, the support rod 6 is retracted into the first groove 4-1, and the screw sleeve 8-1 of the knob 8 is screwed onto the outer wall of the threaded cover 7. In use, rotating the knob 8 causes the screw sleeve 8-1 to disengage from the threaded cover 7. At this time, the spring 9 pops the knob 8 out, and the knob 8 drives the rotating shaft 12 to slide downward along the axial direction, so that a pair of locking pins 13 at the upper end of the rotating shaft 12 fall into the locking groove of the connecting sleeve 11. Rotating the knob 8 causes the rotating shaft 12 to rotate. 2. Drive the threaded tube to rotate through the connecting sleeve 11 to extend the device to a suitable length. Hold the pull ring 1 and insert the device into the pin hole. Continue to rotate the knob 8 to extend the device until the first groove is completely exposed outside the pin hole. At this time, unfold the support rod 6. Then rotate the knob 8 in the opposite direction to retract the device until the support rod 6 contacts the outer edge of the pin hole. Press the knob 8 to make the threaded sleeve 8-1 contact the threaded cover. Tighten the threaded sleeve of the knob 8 onto the threaded cover 7. Adjust the pull ring 1 to a suitable position to avoid scratching other moving parts.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new type of anti-exit pin comprising an inner pin tube (2), an outer pin tube (4) and a pair of struts (6), characterized in that, The inner pin (2) is slidably installed on the inner wall of the outer pin (4). The lower outer wall of the outer pin (4) is provided with a pair of first grooves (4-1). A pin (4-3) is installed in each of the pair of first grooves (4-1). The support rod (6) is installed in the first groove (4-1) and one end of the support rod (6) is rotatably connected to the pin (4-3). A bearing seat (10) is fixedly installed on the bottom inner wall of the outer pin (4). A threaded tube (5) is rotatably installed on the bearing seat (10). The inner wall of the inner pin tube (2) is threaded, and the threaded tube (5) is screwed onto the inner wall of the inner pin tube (2). A connecting sleeve (11) is fixedly installed on the inner wall of the threaded tube (5). The connecting sleeve (11) is provided with a slot. A rotating shaft (12) is inserted into the connecting sleeve (11). A pair of locking pins (13) are provided at the upper end of the rotating shaft (12). The lower end of the rotating shaft (12) passes through the bottom of the outer pin tube (4). A knob (8) is connected to one end of the rotating shaft (12) that extends out of the outer pin tube (4).

2. A new anti-exit pin according to claim 1, characterized in that, The upper end of the knob (8) is provided with a threaded sleeve (8-1), and the bottom outer wall of the outer pin tube (4) is provided with a threaded cap (7). The threaded sleeve (8-1) is screwed onto the outer wall of the threaded cap (7). A spring (9) is installed inside the threaded cap (7), and the extension end of the spring (9) is connected to the knob (8).

3. A new anti-exit pin according to claim 1, characterized in that, The upper end of the inner pin tube (2) is provided with a pair of second grooves (2-1), and spring support plates (3) are fixedly installed in each pair of second grooves (2-1).

4. A new anti-exit pin according to claim 1, characterized in that, The inner wall of the outer pin tube (4) is provided with a limiting groove (4-2), and the outer wall of the inner pin tube (2) is provided with a limiting key (2-2). The limiting key (2-2) slides on the inner wall of the limiting groove (4-2).

5. A new type of anti-exit pin according to claim 1, characterized in that, The top end of the inner pin tube (2) is rotatably connected to a pull ring (1).

Images