Anti-falling pin shaft capable of being quickly locked and unlocked

Abstract

The utility model relates to the related technical field of mechanical connecting parts, in particular to an anti-falling pin shaft capable of being locked and unlocked quickly, which comprises a pin shaft main body, a fixing ring is connected to the inner side surface of a rotating hole in a sliding manner, and a locking mechanism is arranged on the outer side surface of the pin shaft main body. According to the anti-disengaging pin shaft capable of being rapidly locked and unlocked, through the arrangement of the locking mechanism, in the locking process, the pin shaft body is inserted into a connecting part firstly, then the friction block is pushed downwards, the friction block drives the limiting block to slide in the limiting groove, and therefore the sliding clamping block slides in the sliding groove, and in the process, the sliding clamping block extrudes the spring, and the pin shaft body is locked. And then the fixing ring rotates into the fixing groove around the rotating hole, then the friction block is loosened, the spring releases the elastic force and rebounds, the sliding clamping block is pushed to return to the initial position and is inserted into the clamping groove, locking is achieved, the pin shaft body and the connecting part are stably connected, the operation process is simple, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical connecting component technical field especially relates to a prevent the pin shaft that takes off can quick locking and unlocking. BACKGROUND

[0002] Pin shaft, also known as pin, pin rod, is a kind of mechanical parts, mainly used to connect, fix or position two or more components, pin shaft is usually cylindrical, one end or two ends have head, can pass through the hole on component, then use split pin, round pin, safety pin, spring pin etc. Fixed, prevent its slippage, the material of pin shaft is generally steel, stainless steel, copper, aluminium etc., according to different use environment and requirement, select different materials, they can be used to connect gear, bearing, connecting rod, support etc. Component, can also be used for the connection of axle and wheel hub, or as positioning pin to determine the position of component, it is a commonly used connecting element, therefore, especially need a prevent the pin shaft that takes off can quick locking and unlocking.

[0003] But the existing prevent the pin shaft that takes off, although can achieve the relative rotation connection function of two components, however in some use scenarios of the frequent disassembly and installation demand of component, its operation process is more complex, lead to the efficiency reduction of equipment maintenance work. UTILITY MODEL CONTENTS

[0004] The utility model provides a prevent the pin shaft that takes off can quick locking and unlocking to solve the existing prevent the pin shaft that takes off in the background art proposed, although can achieve the relative rotation connection function of two components, however in some use scenarios of the frequent disassembly and installation demand of component, its operation process is more complex, lead to the efficiency reduction of equipment maintenance work.

[0005] To realize above-mentioned purpose, the utility model provides following technical scheme: a prevent the pin shaft that takes off can quick locking and unlocking, including pin shaft main part, the lower surface of pin shaft main part is fixedly connected with base, the lower surface of base is fixedly connected with hemispherical block, the inside of hemispherical block is equipped with rotating hole, the inside surface of rotating hole is slidably connected with fixed ring, the outside surface of pin shaft main part is provided with locking mechanism;

[0006] The locking mechanism comprises a fixed slot, a clamping slot, a sliding slot, a trapezoidal slot, a limiting slot, a limiting block, a friction block, a sliding clamping block, a trapezoidal block and a spring, the outer surface of the pin shaft body is provided with the fixed slot, the inner surface of the fixed slot is provided with the clamping slot, the inner surface of the pin shaft body is provided with the sliding slot, the inner surface of the sliding slot is provided with the trapezoidal slot, the outer surface of the pin shaft body is provided with the limiting slot, the inner surface of the limiting slot is slidably connected with the limiting block, one side surface of the limiting block is fixedly connected with the friction block, the other side surface of the limiting block is fixedly connected with the sliding clamping block, one side surface of the sliding clamping block is fixedly connected with the trapezoidal block, and the lower surface of the trapezoidal block is fixedly connected with the spring.

[0007] Preferably, the fixed ring and the hemispherical block constitute a rotating structure through a rotating hole, and the inner size of the rotating hole is larger than the outer size of the fixed ring.

[0008] Preferably, the inner size of the clamping slot and the outer size of the sliding clamping block are consistent, and the clamping slot is arranged on the upper surface of the fixed slot.

[0009] Preferably, the inner size of the sliding slot and the outer size of the sliding clamping block are consistent, and the sliding clamping block and the sliding slot are slidably connected.

[0010] Preferably, the inner size of the trapezoidal slot and the outer size of the trapezoidal block are consistent, and the trapezoidal slot is symmetrically arranged about the central axis of the sliding slot.

[0011] Preferably, the inner size of the limiting slot and the outer size of the limiting block are consistent, and the other end of the spring is fixedly connected with the sliding slot.

[0012] Preferably, the spring is symmetrically arranged about the central axis of the sliding clamping block, and the sliding clamping block and the sliding slot constitute an extension structure through the spring.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the anti-coming-off pin shaft capable of being quickly locked and unlocked, through the setting of the locking mechanism, in the locking process, first insert the pin shaft body into the connecting part, then push the friction block downward, the movement of the friction block drives the limiting block connected therewith to slide in the limiting groove, the movement of the limiting block in turn causes the sliding clamping block to synchronously slide in the sliding groove, at the same time, the trapezoidal block connected with the sliding clamping block slides in the trapezoidal groove, in this process, the sliding clamping block extrudes the spring, the spring is contracted and accumulates force, then rotate the fixing ring around the rotating hole into the fixed groove, then release the friction block, the spring releases the elastic force and rebounds, pushes the sliding clamping block back to the initial position and inserts into the clamping groove, thus realizes the locking, makes the pin shaft body and the connecting part stably connected, when unlocking, push the friction block downward again, this makes the sliding clamping block separate from the clamping groove, at this time, the fixing ring is no longer limited and can rotate out of the fixed groove, thereby completes the unlocking operation, makes the pin shaft body can be smoothly pulled out of the connecting part, the operation process is simple, improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the side view appearance structure schematic diagram of the utility model;

[0015] Figure 2 It is the mutual cooperation structure schematic diagram of the hemisphere block and the rotating hole of the utility model;

[0016] Figure 3 It is the mutual cooperation structure schematic diagram of the limiting block and the friction block of the utility model;

[0017] Figure 4 It is the locking mechanism structure schematic diagram of the utility model.

[0018] In the drawing: 1, pin shaft body; 2, base; 3, hemisphere block; 4, rotating hole; 5, fixing ring; 6, locking mechanism; 601, fixed groove; 602, clamping groove; 603, sliding groove; 604, trapezoidal groove; 605, limiting groove; 606, limiting block; 607, friction block; 608, sliding clamping block; 609, trapezoidal block; 610, spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4The utility model provides a technical scheme: a prevent -off pin shaft of quick locking and unlocking, including pin shaft main part 1, the lower surface fixed connection of pin shaft main part 1 has the base 2, the lower surface fixed connection of base 2 has the hemispherical block 3, the inside of hemispherical block 3 is equipped with rotating hole 4, the inside surface sliding connection of rotating hole 4 has the fixed ring 5, the outside surface of pin shaft main part 1 is provided with locking mechanism 6,

[0021] Locking mechanism 6 includes fixed groove 601, clamping groove 602, sliding groove 603, trapezoidal groove 604, limiting groove 605, limiting block 606, friction block 607, sliding clamping block 608, trapezoidal block 609 and spring 610, the outside surface of pin shaft main part 1 is equipped with fixed groove 601, the inside surface of fixed groove 601 is equipped with clamping groove 602, the inside surface of pin shaft main part 1 is equipped with sliding groove 603, the inside surface of sliding groove 603 is equipped with trapezoidal groove 604, the outside surface of pin shaft main part 1 is equipped with limiting groove 605, the inside surface sliding connection of limiting groove 605 has limiting block 606, the one side surface fixed connection of limiting block 606 has friction block 607, the other side surface fixed connection of limiting block 606 has sliding clamping block 608, the one side surface fixed connection of sliding clamping block 608 has trapezoidal block 609, the lower surface fixed connection of trapezoidal block 609 has spring 610, through the setting of fixed groove 601, clamping groove 602, sliding groove 603, trapezoidal groove 604, limiting groove 605, limiting block 606, friction block 607, sliding clamping block 608, trapezoidal block 609 and spring 610, in use, in the locking process, first pin shaft main part 1 is inserted into connecting component, then push down friction block 607, the movement of friction block 607 drives the sliding of limiting block 606 in limiting groove 605, the movement of limiting block 606 makes sliding clamping block 608 slide in sliding groove 603 synchronously, at the same time, trapezoidal block 609 connected with sliding clamping block 608 slides in trapezoidal groove 604, in this process, sliding clamping block 608 extrudes spring 610, makes spring 610 shrink and store energy, then fixed ring 5 is rotated to fixed groove 601 around rotating hole 4, after that, release friction block 607, spring 610 releases elastic force and rebounds, push sliding clamping block 608 to return to the initial position and insert in clamping groove 602, thus realizes locking, makes pin shaft main part 1 and connecting component stable connection, when unlocking, push down friction block 607 again, this makes sliding clamping block 608 separate from clamping groove 602, at this time, fixed ring 5 is not limited any more, can rotate from fixed groove 601, thereby completes unlocking operation, makes pin shaft main part 1 can be smoothly pulled out from connecting component, the operation flow is simple, improves work efficiency.

[0022] Further, the fixed ring 5 and the hemispherical block 3 form a rotating structure through the rotating hole 4, the inner side size of the rotating hole 4 is larger than the outer side size of the fixed ring 5, through the setting of the rotating hole 4 and the fixed ring 5, in use, the fixed ring 5 can rotate smoothly inside the rotating hole 4, avoiding excessive friction and interference between the fixed ring 5 and the inner wall of the rotating hole 4, ensuring the flexibility and smoothness of rotation.

[0023] Further, the inner side size of the clamping groove 602 and the outer side size of the sliding clamping block 608 are matched, the clamping groove 602 is opened on the upper surface of the fixed groove 601, through the setting of the clamping groove 602, when the spring 610 rebounds, the sliding clamping block 608 will be pushed back to the original position and inserted into the clamping groove 602, the clamping groove 602 can ensure that the sliding clamping block 608 is accurately embedded, thereby enhancing the stability of the locking mechanism 6.

[0024] Further, the inner side size of the sliding groove 603 and the outer side size of the sliding clamping block 608 are matched, the sliding clamping block 608 and the sliding groove 603 are slidingly connected, through the setting of the sliding groove 603 and the sliding clamping block 608, in use, the sliding clamping block 608 slides inside the sliding groove 603, the sliding groove 603 can limit the sliding clamping block 608, making the sliding of the sliding clamping block 608 more stable.

[0025] Further, the inner side size of the trapezoidal groove 604 and the outer side size of the trapezoidal block 609 are matched, the trapezoidal groove 604 is symmetrically arranged about the central axis of the sliding groove 603, through the setting of the trapezoidal groove 604 and the trapezoidal block 609, in use, the trapezoidal block 609 slides inside the trapezoidal groove 604, the trapezoidal groove 604 limits the trapezoidal block 609, making the sliding of the sliding clamping block 608 more stable, and due to the special shape of the trapezoidal groove 604 and the trapezoidal block 609, the sliding clamping block 608 will not come off the sliding groove 603, making it more stable in use.

[0026] Further, the inner side size of the limiting groove 605 and the outer side size of the limiting block 606 are matched, the other end of the spring 610 is fixedly connected with the sliding groove 603, through the setting of the limiting groove 605 and the limiting block 606, in use, the limiting block 606 slides inside the limiting groove 605, the limiting groove 605 limits the limiting block 606, making the sliding of the sliding clamping block 608 more stable.

[0027] Further, the spring 610 is symmetrically arranged about the central axis of the sliding clamping block 608, the sliding clamping block 608 and the sliding groove 603 form an extension structure through the spring 610, through the setting of the spring 610, in use, two groups of springs 610 are compressed and rebounded at the same time, making the rebounding force larger, and reducing the occurrence of faults.

[0028] Working principle: in the locking process, first, the pin shaft body 1 is inserted into the connecting part, then the friction block 607 is pushed down, the movement of the friction block 607 drives the limiting block 606 connected therewith to slide in the limiting groove 605, the limiting groove 605 limits the limiting block 606, so that the sliding of the sliding block 608 is more stable, the movement of the limiting block 606 also causes the sliding block 608 to slide synchronously in the sliding groove 603, the sliding groove 603 can limit the sliding block 608, so that the sliding of the sliding block 608 is more stable, at the same time, the trapezoidal block 609 connected with the sliding block 608 slides in the trapezoidal groove 604, the trapezoidal groove 604 limits the trapezoidal block 609, so that the sliding of the sliding block 608 is more stable, and due to the special shape of the trapezoidal groove 604 and the trapezoidal block 609, the sliding block 608 cannot be separated from the sliding groove 603, in this process, the sliding block 608 extrudes the spring 610, so that the spring 610 is contracted and stored, then the fixed ring 5 is rotated around the rotating hole 4 to the fixed groove 601, then the friction block 607 is loosened, the spring 610 releases the elastic force and rebounds, pushes the sliding block 608 back to the initial position and inserts into the card slot 602, thus realizing the locking, so that the pin shaft body 1 and the connecting part are stably connected, when unlocking, the friction block 607 is pushed down again, which makes the sliding block 608 separate from the card slot 602, at this time, the fixed ring 5 is no longer limited and can be rotated out of the fixed groove 601, so as to complete the unlocking operation, so that the pin shaft body 1 can be smoothly pulled out of the connecting part, the operation process is simple, and the working efficiency is improved.

[0029] Although the embodiments of the present application have been shown and described, it should 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 application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A fast-locking and unlocking anti-detachment pin, comprising a pin body (1), characterized in that: A base (2) is fixedly connected to the lower surface of the pin body (1), a hemispherical block (3) is fixedly connected to the lower surface of the base (2), a rotating hole (4) is opened on the inner side of the hemispherical block (3), a fixing ring (5) is slidably connected to the inner surface of the rotating hole (4), and a locking mechanism (6) is provided on the outer surface of the pin body (1). The locking mechanism (6) includes a fixing groove (601), a locking groove (602), a sliding groove (603), a trapezoidal groove (604), a limiting groove (605), a limiting block (606), a friction block (607), a sliding locking block (608), a trapezoidal block (609), and a spring (610). The outer surface of the pin body (1) is provided with a fixing groove (601), the inner surface of the fixing groove (601) is provided with a locking groove (602), and the inner surface of the pin body (1) is provided with a sliding groove (603). A trapezoidal groove (604) is provided on the inner surface of the pin body (1), and a limiting groove (605) is provided on the outer surface of the pin body (1). A limiting block (606) is slidably connected to the inner surface of the limiting groove (605). A friction block (607) is fixedly connected to one side surface of the limiting block (606), and a sliding block (608) is fixedly connected to the other side surface of the limiting block (606). A trapezoidal block (609) is fixedly connected to one side surface of the sliding block (608), and a spring (610) is fixedly connected to the lower surface of the trapezoidal block (609).

2. The anti-detachment pin shaft capable of quick locking and unlocking according to claim 1, characterized in that: The fixed ring (5) forms a rotating structure with the hemispherical block (3) through the rotating hole (4), and the inner dimension of the rotating hole (4) is larger than the outer dimension of the fixed ring (5).

3. The anti-detachment pin shaft capable of quick locking and unlocking according to claim 1, characterized in that: The inner dimensions of the slot (602) match the outer dimensions of the sliding block (608), and the slot (602) is formed on the upper surface of the fixing slot (601).

4. The anti-detachment pin shaft capable of quick locking and unlocking according to claim 1, characterized in that: The inner dimensions of the sliding groove (603) and the outer dimensions of the sliding block (608) are matched, and the sliding block (608) and the sliding groove (603) are slidably connected.

5. A quick-locking and unlocking anti-detachment pin shaft according to claim 1, characterized in that: The inner dimensions of the trapezoidal groove (604) match the outer dimensions of the trapezoidal block (609), and the trapezoidal groove (604) is symmetrically arranged about the central axis of the sliding groove (603).

6. The anti-detachment pin shaft capable of quick locking and unlocking according to claim 1, characterized in that: The inner dimension of the limiting groove (605) matches the outer dimension of the limiting block (606), and the other end of the spring (610) is fixedly connected to the sliding groove (603).

7. A quick-locking and unlocking anti-detachment pin shaft according to claim 1, characterized in that: The spring (610) is symmetrically arranged around the central axis of the sliding block (608), and the sliding block (608) forms a telescopic structure with the spring (610) and the sliding groove (603).

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