Structural detent pin shaft

Abstract

This invention relates to the field of pin technology, specifically to a structural locking pin, comprising: a pin, a slot on one side of the pin, and four symmetrical buffer grooves on the inner wall of the slot; the beneficial effects are as follows: when installing the pin, after adjusting the position of the positioning sleeve, when the fixing cover on the pin is inserted, its outer wall presses against the lower inclined surface of the positioning block, while the positioning block is slowly squeezed into the buffer groove. Under the restoring force of the spring, the positioning block rebounds outward and contacts the bottom of the fixing cover, thus completing the limiting and fixing of the pin. When disassembling, the positioning sleeve is moved to increase the insertion depth, and the pin pusher is slid upward to push the positioning block into the buffer groove and then to the top of the positioning block. The pin is pulled outward, and the pusher is first squeezed into the interior of the fixing cover. Continue pulling to squeeze the positioning block into the buffer groove. Pulling it out again causes the fixing cover and pusher to separate from the positioning block, thus completing the disassembly of the pin. After installation, the pin no longer has any protrusions, and disassembly and assembly are convenient.

Description

Technical Field

[0001] This invention relates to the field of pin technology, specifically to a structural locking pin. Background Technology

[0002] A shaft is a standardized type of fastener that can be used for static fixed connection or for relative movement with the connected parts. It is mainly used at the hinge joint of two parts to form a hinge connection. The shaft is usually locked with a cotter pin.

[0003] In existing technologies, conventional pins typically require drilling through holes in the main pin before inserting the pin. After installation, the pin may slip and fall off. Furthermore, the pin head has a sharp protrusion that could easily bump into people. Therefore, this invention proposes a structural locking pin to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a structural locking pin to solve the problems mentioned in the background art, which generally require drilling through holes in the main pin before inserting the pin, and the installed pin may slide and fall off, and the head of the pin has a sharp protrusion that can easily hit people.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a structural locking pin, comprising:

[0006] A pin has a slot on one side, four symmetrical buffer grooves on the inner wall of the slot, symmetrical limiting grooves on the inner wall of the buffer groove, a spring on the inner wall of the buffer groove, a positioning block on one end of the spring, an adjustment groove on the inner wall of one end of the buffer groove, a sliding groove on the inner wall of the adjustment groove, a positioning sleeve on the inner wall of the adjustment groove, and a threaded rod on the inner wall of the positioning sleeve.

[0007] A pin, one end of which is fixedly connected to a rod that inserts into the inner wall of a slot. One end of the rod is provided with a fixed shaft, and one end of the fixed shaft is provided with a fixed cover. A push block is provided on the outer wall of the fixed shaft between the fixed cover and the rod.

[0008] Preferably, the two ends of the spring are fixedly connected to one side of the inner wall of the buffer groove and one end of the positioning block, respectively, and the outer wall of the positioning block is slidably connected to the inner wall of the buffer groove and the limiting groove.

[0009] Preferably, the end of the positioning block extending out of the buffer groove has an upper inclined surface and a lower inclined surface with different angles.

[0010] Preferably, the outer wall of the positioning sleeve and the inner wall of the adjusting groove are slidably connected, and a slider that is slidably connected to the inner wall of the groove is fixedly connected to the upper outer wall of the positioning sleeve.

[0011] Preferably, the outer wall of the threaded rod is threaded to the inner wall of the positioning sleeve, the upper outer wall of the threaded rod is rotatably connected to the inner wall of the pin, and a knob is fixedly connected to one end of the threaded rod that protrudes from the pin.

[0012] Preferably, the two ends of the fixed shaft are fixedly connected to the insert rod and the inner wall of one side of the fixed cover, respectively; the upper end and outer wall of the fixed cover are slidably connected to the lower inclined surface of the positioning block; and the upper outer wall of the fixed cover abuts against one end of the positioning sleeve.

[0013] Preferably, the inner wall of the push block and the outer wall of the fixed shaft are slidably connected, an upper sliding surface is provided above the push block and slidably connected to the lower inclined surface of the positioning block, and a lower sliding surface is provided below the push block and slidably connected to the upper inclined surface of the positioning block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When installing the pin, after adjusting the position of the positioning sleeve, the outer wall of the fixing cover on the pin presses against the lower slope of the positioning block when inserted. At the same time, the positioning block is slowly squeezed into the buffer groove. Under the restoring force of the spring, the positioning block rebounds outward and contacts the bottom of the fixing cover, thus completing the limiting and fixing of the pin. When disassembling, move the positioning sleeve to increase the insertion depth, slide the pin pusher upward to squeeze the positioning block into the buffer groove and then to the top of the positioning block. Pull the pin outward, and the pusher will first be squeezed into the inside of the fixing cover. Continue to pull to squeeze the positioning block into the buffer groove. Pull it out again to separate the fixing cover and pusher from the positioning block. At this time, the pin is disassembled. After installation, the pin no longer has any protrusions and is easy to install and remove. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention.

[0018] Figure 3 For the present invention Figure 2 Enlarged view of the structure of region A in the middle;

[0019] Figure 4 This is a front view of the disassembled overall structure of the present invention.

[0020] Figure 5 For the present invention Figure 4 The structure of region B in the middle is enlarged.

[0021] In the diagram: Pin 1, Slot 11, Buffer groove 12, Limit groove 121, Spring 13, Positioning block 14, Upper inclined surface 141, Lower inclined surface 142, Adjustment groove 15, Slide groove 151, Positioning sleeve 16, Slider 161, Threaded rod 17, Knob 171, Pin 2, Insert rod 21, Fixed shaft 22, Fixed cover 23, Push block 24, Upper sliding surface 241, Lower sliding surface 242. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0026] Example 1:

[0027] Please see Figures 1 to 5 The present invention provides a technical solution: a structural locking pin, comprising:

[0028] The pin 1 has a slot 11 on one side. The inner wall of the slot 11 has four symmetrical buffer grooves 12. The inner wall of each buffer groove 12 has symmetrical limiting grooves 121 to prevent the positioning block 14 from twisting during sliding. A spring 13 is provided on the inner wall of the buffer groove 12, and a positioning block 14 is provided at one end of the spring 13. After the pin 2 is installed, it is fixed by the rebounding positioning block 14. An adjusting groove 15 is provided on the inner wall of one end of the buffer groove 12, and a sliding groove 1 is provided on the inner wall of the adjusting groove 15. 51. The inner wall of the adjusting groove 15 is provided with a positioning sleeve 16 to fix the insertion depth of the lower pin 2. The inner wall of the positioning sleeve 16 is provided with a threaded rod 17 to adjust the position of the positioning sleeve 16. The pin 2 has a fixed connection at one end to a rod 21 that is inserted into the inner wall of the slot 11. One end of the rod 21 is provided with a fixing shaft 22. One end of the fixing shaft 22 is provided with a fixing cover 23. The outer wall of the fixing shaft 22 located between the fixing cover 23 and the rod 2 is provided with a push block 24 to facilitate the subsequent disassembly of the pin 2.

[0029] The internal structure of pin 1 facilitates the fixing and disassembly of the pin, improving the efficiency of installation and disassembly.

[0030] Example 2:

[0031] Please see Figures 1-3 The attached diagram shows the structure of this embodiment. Based on Embodiment 1, to facilitate the insertion and fixing of the pin 2, both ends of the spring 13 are fixedly connected to one side of the inner wall of the buffer groove 12 and one end of the positioning block 14, respectively. The outer wall of the positioning block 14 is slidably connected to the inner wall of the buffer groove 12 and the limiting groove 121. The end of the positioning block 14 extending out of the buffer groove 12 has an upper inclined surface 141 and a lower inclined surface 142 with different angles. When the fixing cover 23 on the pin 2 is inserted, its outer wall presses the positioning block 14 into the buffer groove 12 until it is fixed. After the fixed cover 23 passes through the positioning block 14, the spring 13 returns to limit and fix the fixed cover 23. The outer wall of the positioning sleeve 16 and the inner wall of the adjustment groove 15 are slidably connected. The upper outer wall of the positioning sleeve 16 is fixedly connected to the slider 161, which is slidably connected to the inner wall of the sliding groove 151. The outer wall of the threaded rod 17 is threadedly connected to the inner wall of the positioning sleeve 16. The upper outer wall of the threaded rod 17 is rotatably connected to the inner wall of the pin 1. A knob 171 is fixedly connected to one end of the threaded rod 17 that passes through the pin 1. Rotating the knob 171 makes it convenient to rotate the threaded rod 17.

[0032] After adjusting the position of the positioning sleeve 16, when the fixing cover 23 on the pin 2 is inserted, its outer wall presses against the lower inclined surface 141 of the positioning block 14. During the upward process, it slides against the lower inclined surface 141. At the same time, the positioning block 14 is slowly squeezed into the buffer groove 12. When the fixing cover 23 and the lower inclined surface are no longer in contact, the positioning block 14 rebounds outward under the restoring force of the spring 13 and contacts the bottom of the fixing cover 23. At this time, the pin is fixed.

[0033] Example 3:

[0034] Please see Figure 1 , Figure 4 , Figure 5 The attached diagram is for the structure of this embodiment. Based on embodiment two, in order to facilitate the disassembly of the pin 2, the two ends of the fixed shaft 22 are fixedly connected to the insert rod 2 and the inner wall of one side of the fixed cover 23, respectively. The upper end and outer wall of the fixed cover 23 are slidably connected to the lower inclined surface of the positioning block 14. The upper outer wall of the fixed cover 23 abuts against one end of the positioning sleeve 16 to adjust the insertion depth of the pin 2. The inner wall of the push block 24 is slidably connected to the outer wall of the fixed shaft 22. The upper part of the push block 24 is provided with an upper sliding surface 241 that is slidably connected to the lower inclined surface 141 of the positioning block 14. The lower part of the push block 24 is provided with a lower sliding surface 242 that is slidably connected to the upper inclined surface 142 of the positioning block 14, so as to facilitate the removal of the pin in cooperation with the positioning block 14.

[0035] Move the positioning sleeve 16 upward to increase the insertion depth, then slide the pin 2 upward again. The upper surface 241 of the push block 24 moves upward and slides with the lower inclined surface of the positioning block 14, squeezing the positioning block 14 into the buffer groove 12 and reaching the top of the positioning block 14. Then pull the pin outward. The push block is first squeezed into the interior of the fixing cover 23. Continue to pull so that the lower sliding surface 242 of the push block 24 and the upper inclined surface 141 of the positioning block 14 slide, squeezing the positioning block 14 into the buffer groove 12. The bottom end of the fixing cover 23 contacts the upper inclined surface 141. Pull it out again so that the fixing cover 23 and the push block 24 are separated from the positioning block 14. At this time, the disassembly of the pin 2 is completed.

[0036] When the device is working, when installing the pin 2, after adjusting the position of the positioning sleeve 16, the outer wall of the fixing cover 23 on the pin 2 presses against the lower inclined surface 141 of the positioning block 14 when it is inserted. At the same time, the positioning block 14 is slowly squeezed into the buffer groove 12. When the fixing cover 23 and the lower inclined surface are no longer in contact, the positioning block 14 rebounds outward under the restoring force of the spring 13 and contacts the bottom of the fixing cover 23. At this time, the pin is fixed. When disassembling the pin, the positioning sleeve 16 is moved upward to increase the insertion depth, the pin 2 is slid upward, and the push block 24 pushes the positioning block 14 into the buffer groove 12 and then reaches the top of the positioning block 14. Then the pin is pulled outward. The push block 24 is first squeezed into the inside of the fixing cover 23. The continued pulling pushes the positioning block 14 into the buffer groove 12. The bottom end of the fixing cover 23 contacts the upper inclined surface 141. Pulling it out again separates the fixing cover 23 and the push block 24 from the positioning block 14. At this time, the pin 2 is disassembled.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A locking pin structure, characterized in that: include: A pin (1) is provided with a slot (11) on one side. The inner wall of the slot (11) is provided with four axisymmetric buffer grooves (12). The inner wall of the buffer groove (12) is provided with symmetrical limiting grooves (121). The inner wall of the buffer groove (12) is provided with a spring (13). One end of the spring (13) is provided with a positioning block (14). One end of the inner wall of the buffer groove (12) is provided with an adjustment groove (15). The inner wall of the adjustment groove (15) is provided with a sliding groove (151). The inner wall of the adjustment groove (15) is provided with a positioning sleeve (16). The inner wall of the positioning sleeve (16) is provided with a threaded rod (17). A pin (2) is fixedly connected at one end to a rod (21) that is inserted into the inner wall of a slot (11). A fixed shaft (22) is provided at one end of the rod (21), and a fixed cover (23) is provided at one end of the fixed shaft (22). A push block (24) is provided on the outer wall of the fixed shaft (22) between the fixed cover (23) and the rod (21). The two ends of the spring (13) are fixedly connected to one side of the inner wall of the buffer groove (12) and one end of the positioning block (14), respectively. The outer wall of the positioning block (14) and the buffer groove (12) are fixedly connected to the inner wall of the buffer groove (12) and the positioning block (14). The inner wall of the positioning block (14) and the limiting groove (121) are slidably connected; the positioning block (14) extends out of the buffer groove (12) and has an upper inclined surface (141) and a lower inclined surface (142) with different angles at one end; the inner wall of the push block (24) and the outer wall of the fixed shaft (22) are slidably connected; the upper part of the push block (24) has an upper sliding surface (241) that is slidably connected to the upper inclined surface (141) of the positioning block (14); the lower part of the push block (24) has a lower sliding surface (242) that is slidably connected to the lower inclined surface (142) of the positioning block (14).

2. The locking pin according to claim 1, characterized in that: The outer wall of the positioning sleeve (16) and the inner wall of the adjustment groove (15) are slidably connected, and the upper outer wall of the positioning sleeve (16) is fixedly connected to a slider (161) that is slidably connected to the inner wall of the sliding groove (151).

3. The locking pin according to claim 2, characterized in that: The outer wall of the threaded rod (17) is threaded to the inner wall of the positioning sleeve (16), the upper outer wall of the threaded rod (17) is rotatably connected to the inner wall of the pin (1), and a knob (171) is fixedly connected to one end of the threaded rod (17) that protrudes from the pin (1).

4. The locking pin according to claim 1, characterized in that: The two ends of the fixed shaft (22) are fixedly connected to the inner wall of the insert rod (21) and the fixed cover (23) respectively. The upper end and outer wall of the fixed cover (23) are slidably connected to the lower inclined surface of the positioning block (14). The upper outer wall of the fixed cover (23) abuts against one end of the positioning sleeve (16).

Images