Pin shaft structure of anti-falling pin

Abstract

The invention relates to the technical field of pin shafts, in particular to an anti-falling pin shaft structure which comprises a pin shaft body, one end of the pin shaft body is provided with an edge groove, one end of the edge groove is sleeved with a connecting sleeve, a barrier strip is fixedly inserted into the surface of the connecting sleeve, an insertion rod is inserted into the surface of the barrier strip, and one end of the insertion rod is inserted into the surface of the edge groove; the pin shaft structure of the anti-falling pin has the beneficial effects that the anti-falling function of the pin shaft is achieved through the ingenious design of the edge groove, the connecting sleeve, the barrier strip, the rubber clamping ring and the like, and an additional locking device is not needed. According to the design, the structure is simplified, the cost is reduced, and the installation convenience is improved.

Description

Technical Field

[0001] The invention relates to the field of pin shafts, in particular to a pin shaft structure for preventing the pin from falling off. Background Art

[0002] In the field of mechanical connection, pins are a common connector and are widely used in various equipment, machinery and structures. However, traditional pin structures often have the risk of falling off during use, especially under heavy loads or vibration environments. The falling off of the pin may cause equipment failure or safety accidents. In order to solve this problem, people have begun to explore various anti-pin-off pin structures.

[0003] Traditional methods of preventing pins from falling out usually rely on special designs of the pin body or additional locking devices, but these methods often have problems such as complex structure, difficult installation, high cost or poor anti-falling effect. Therefore, developing a pin structure with simple structure, convenient installation and significant anti-falling effect has become a technical problem that needs to be solved in the current mechanical connection field. Summary of the invention

[0004] The object of the present invention is to provide a pin shaft structure for preventing the pin from falling off, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pin shaft structure for preventing the pin from falling off, comprising a pin shaft body, one end of the pin shaft body is provided with a side groove, one end of the side groove is sleeved with a connecting sleeve, a baffle bar is inserted and fixed on the surface of the connecting sleeve, a plug rod is inserted on the surface of the baffle bar, and one end of the plug rod is inserted into the surface of the side groove.

[0006] Preferably, the side groove is an annular groove, a reserved groove 2 is provided on the surface of the side groove, two reserved grooves 2 are provided, and the two reserved grooves 2 are symmetrically distributed about the side groove, a reserved groove 1 is provided on the surface of the connecting sleeve, both the reserved groove 1 and the reserved groove 2 are arc grooves, and the baffle is fixed in the reserved groove 1.

[0007] Preferably, the height of the baffle is greater than the height of the second reserved groove, and after the connecting sleeve is arranged in the side groove, one side of the baffle is inserted into the second reserved groove.

[0008] Preferably, a slot is provided at one end of the pin shaft body, and the slot is an annular slot with a circular arc fracture. An introduction ring is inserted into the interior of the slot, and a rubber clamping ring is fixedly mounted on one end of the introduction ring. The rubber clamping ring is a circle with a circular cross-section, and the diameter of the circular surface of the rubber clamping ring is larger than the slot width of the slot. After the connecting sleeve is sleeved in the side groove, the rubber clamping ring is clamped in the slot.

[0009] Preferably, a reserved hole is provided on the surface of the baffle bar, the reserved hole is a "T"-shaped circular hole, the insertion rod is inserted into the reserved hole, one end of the insertion rod is inserted into the positioning groove, and the positioning groove is provided on the surface of the side groove.

[0010] Preferably, a perforation is provided on the surface of the insertion rod, a rubber band is inserted into the perforation, both ends of the rubber band are fixed to the surface of the perforation, and a pull ring is fixed to the other end of the insertion rod.

[0011] Preferably, a slot is provided at one end of the pin shaft body, an inserting strip is inserted into the slot, the slot is a square slot, and the inserting strip is a square strip.

[0012] Preferably, a through hole is opened at one end of the pin shaft body, and the through hole is a "convex" shaped circular hole. A screw is inserted into the through hole, one end of the screw is fixed to the surface of the insert, and the other end of the screw is sleeved with a nut threaded on it.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The pin shaft structure of the anti-dropout pin proposed in the present invention realizes the anti-dropout function of the pin shaft through the ingenious design of the side groove, the connecting sleeve, the baffle bar and the rubber clamp ring, without the need for an additional locking device. This design not only simplifies the structure and reduces the cost, but also improves the convenience of installation. After the connecting sleeve is set on the side groove, the baffle bar is pushed into the reserved groove 2, and the rubber clamp ring is stuck in the groove, thereby realizing the preliminary position limiting of the connecting sleeve. Furthermore, through the cooperation of the plug rod, the rubber belt and the positioning groove, the connecting sleeve is firmly prevented from falling off. This multiple limit design significantly improves the anti-dropout effect of the pin shaft and ensures the safety and stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a top view of the structure of the present invention;

[0017] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 6 This is a schematic diagram of the connection structure of the connecting sleeve and the inserting strip of the present invention;

[0021] Figure 7 It is a schematic diagram of the rod structure of the present invention;

[0022] Figure 8 This is a schematic diagram of the connecting sleeve structure of the present invention;

[0023] Fig. 9 It is a schematic diagram of the pin body structure of the present invention.

[0024] In the figure: pin body 1, side groove 2, connecting sleeve 3, clamping groove 4, guide ring 5, rubber clamp ring 6, reserved groove 1 7, reserved groove 2 8, stop bar 9, reserved hole 10, plug rod 11,

[0025] Positioning groove 12 , perforation 13 , rubber band 14 , pull ring 15 , slot 16 , through hole 17 , insert strip 18 , screw rod 19 , nut 20 . DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 9 The present invention provides a technical solution: a pin structure for preventing a pin from falling off, comprising a pin body 1, a side groove 2 is provided at one end of the pin body 1, a connecting sleeve 3 is sleeved at one end of the side groove 2, a retaining bar 9 is inserted and fixed on the surface of the connecting sleeve 3, the side groove 2 is an annular groove, a reserved groove 2 8 is provided on the surface of the side groove 2, two reserved grooves 2 8 are provided, and the two reserved grooves 2 8 are symmetrically distributed about the side groove 2, a reserved groove 1 7 is provided on the surface of the connecting sleeve 3, the reserved groove 1 7 and the reserved groove 2 8 are both arc grooves, and the retaining bar 9 is fixed on the reserved groove 1 In the groove 1 7, the height of the baffle 9 is greater than the height of the reserved groove 2 8. After the connecting sleeve 3 is sleeved on the side groove 2, one side of the baffle 9 is inserted into the reserved groove 2 8; a clamping groove 4 is opened at one end of the pin shaft body 1, and the clamping groove 4 is an annular groove with a circular arc fracture. An introduction ring 5 is inserted into the interior of the clamping groove 4, and a rubber clamping ring 6 is sleeved and fixed on one end of the introduction ring 5. The rubber clamping ring 6 is a circle with a circular cross-section. The diameter of the circular surface of the rubber clamping ring 6 is greater than the groove width of the clamping groove 4. After the connecting sleeve 3 is sleeved on the side groove 2, the rubber clamping ring 6 is clamped in the clamping groove 4.

[0028] After the pin body 1 passes through the pin insertion hole on the surface of the workpiece, the connecting sleeve 3 is sleeved on the side groove 2. At this time, the blocking bar 9 is pushed into the reserved groove 8, and the guide ring 5 and the rubber clamping ring 6 are inserted into the clamping groove 4 to realize temporary limiting of the connecting sleeve 3 after being sleeved on the side groove 2.

[0029] The surface of the baffle 9 is plugged with an insertion rod 11, one end of which is plugged into the surface of the side groove 2. A reserved hole 10 is provided on the surface of the baffle 9, and the reserved hole 10 is a "T"-shaped round hole. The insertion rod 11 is plugged into the reserved hole 10, and one end of the insertion rod 11 is plugged into the positioning groove 12. The positioning groove 12 is provided on the surface of the side groove 2. A through hole 13 is provided on the surface of the insertion rod 11, and a rubber band 14 is plugged into the inside of the through hole 13. Both ends of the rubber band 14 are fixed to the surface of the through hole 13, and a pull ring 15 is fixed to the other end of the insertion rod 11. Connect The sleeve 3 is arranged in front of the side groove 2, and the pull ring 15 is pinched by hand to pull the insertion rod 11, and the insertion rod 11 pulls the rubber belt 14 to produce elastic deformation. When one end of the insertion rod 11 is retracted into the reserved hole 10, the connecting sleeve 3 is pushed until the blocking bar 9 is inserted into the reserved groove 8. At this time, after the pull ring 15 is released, the rubber belt 14 rebounds and pulls the insertion rod 11 to reset. At this time, one end of the insertion rod 11 is inserted into the positioning groove 12, realizing the anti-slip limit of the connecting sleeve 3 after the side groove 2 is set. In this way, the blocking bar 9 is firmly blocked on one side of the pin shaft insertion hole of the workpiece to prevent the pin shaft from falling off after being installed on the workpiece.

[0030] A slot 16 is provided at one end of the pin body 1, and an insert strip 18 is inserted inside the slot 16. The slot 16 is a square slot, and the insert strip 18 is a square strip. A through hole 17 is provided at one end of the pin body 1, and the through hole 17 is a "convex"-shaped round hole. A screw 19 is inserted inside the through hole 17, and one end of the screw 19 is fixed to the surface of the insert strip 18, and the other end of the screw 19 is sleeved with a nut 20 threadedly connected; when the connecting sleeve 3 is sleeved in the side groove 2, the insert strip 18 has been inserted into the slot 16, and the screw 19 passes through the through hole 17, the nut 20 is threadedly connected to the screw 19, and the connecting sleeve 3 is firmly fixed to one end of the pin body 1 through the traction of the insert strip 18.

[0031] The process of using the pin structure to prevent the pin from falling off is as follows:

[0032] Align the pin body 1 and pass it through the pin insertion hole on the workpiece. Check whether the stop bar 9 is firmly fixed in the reserved groove 7 of the connecting sleeve 3, ensure that the plug rod 11 can be freely extended and retracted through the reserved hole 10, and the rubber belt 14 is in an unstretched state. Pinch the pull ring 15 by hand, stretch the plug rod 11, so that one end of the plug rod 11 is retracted into the reserved hole 10, and the rubber belt 14 is elastically deformed. Set the connecting sleeve 3 on the side groove 2 of the pin body 1 to ensure that the stop bar 9 can smoothly enter the reserved groove 8 during the pushing process. Loosen the pull ring 15, the rubber belt 14 rebounds and pulls the plug rod 11 to reset, and one end of the plug rod 11 is inserted into the positioning groove 12 on the side groove 2 to achieve the initial anti-slip limit of the connecting sleeve 3. Confirm that the introduction ring 5 and the rubber clamp 6 have been assembled correctly. The introduction ring 5 and the rubber clamp 6 are inserted into the card slot 4 of the pin body 1 together, ensuring that the circular surface diameter of the rubber clamp 6 is greater than the notch width of the card slot 4, so as to achieve further temporary limit. After the connecting sleeve 3 is installed and initially limited, the insert strip 18 is inserted into the slot 16 of the pin body 1. Make sure that the screw 19 passes through the through hole 17 of the pin body 1, and the nut 20 is screwed onto the screw 19. Tighten the nut 20 appropriately, and the connecting sleeve 3 is firmly fixed to one end of the pin body 1 through the traction of the insert strip 18 and the screw 19. Confirm that the stop strip 9 is firmly blocked on one side of the pin insertion hole of the workpiece, and that the rubber collar 6 and the nut 20 provide sufficient fixing force. Although the 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 may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pin structure for preventing a pin from falling off, comprising a pin body (1), characterized in that: A side groove (2) is formed at one end of the pin shaft body (1), a connecting sleeve (3) is sleeved on one end of the side groove (2), a stop bar (9) is inserted and fixed on the surface of the connecting sleeve (3), an insert rod (11) is inserted on the surface of the stop bar (9), and one end of the insert rod (11) is inserted into the surface of the side groove (2).

2. The pin structure for preventing the pin from falling off according to claim 1, characterized in that: The side groove (2) is an annular groove, and a reserved groove 2 (8) is provided on the surface of the side groove (2), and two reserved grooves 2 (8) are provided, and the two reserved grooves 2 (8) are symmetrically distributed about the side groove (2). A reserved groove 1 (7) is provided on the surface of the connecting sleeve (3), and both the reserved groove 1 (7) and the reserved groove 2 (8) are arc grooves, and the blocking bar (9) is fixed in the reserved groove 1 (7).

3. The pin structure for preventing the pin from falling off according to claim 2, characterized in that: The height of the baffle (9) is greater than the height of the second reserved groove (8). After the connecting sleeve (3) is sleeved on the side groove (2), one side of the baffle (9) is inserted into the second reserved groove (8).

4. The pin structure for preventing the pin from falling off according to claim 1, characterized in that: A clamping groove (4) is provided at one end of the pin shaft body (1). The clamping groove (4) is an annular groove with a circular arc cutout. An introduction ring (5) is inserted into the interior of the clamping groove (4). A rubber clamping ring (6) is sleeved and fixedly mounted at one end of the introduction ring (5). The rubber clamping ring (6) is a circle with a circular cross section. The diameter of the circular surface of the rubber clamping ring (6) is larger than the slot width of the clamping groove (4). After the connecting sleeve (3) is sleeved on the side groove (2), the rubber clamping ring (6) is clamped in the clamping groove (4).

5. The pin structure for preventing the pin from falling off according to claim 1, characterized in that: A reserved hole (10) is provided on the surface of the blocking bar (9), the reserved hole (10) is a T-shaped circular hole, an insertion rod (11) is inserted into the reserved hole (10), one end of the insertion rod (11) is inserted into a positioning groove (12), and the positioning groove (12) is provided on the surface of the side groove (2).

6. The pin structure for preventing the pin from falling off according to claim 1, characterized in that: The surface of the insertion rod (11) is provided with a through hole (13), a rubber band (14) is inserted into the inside of the through hole (13), both ends of the rubber band (14) are fixed to the surface of the through hole (13), and a pull ring (15) is fixed to the other end of the insertion rod (11).

7. The pin structure for preventing the pin from falling off according to claim 1, characterized in that: A slot (16) is provided at one end of the pin shaft body (1), and an inserting strip (18) is inserted into the slot (16). The slot (16) is a square slot, and the inserting strip (18) is a square strip.

8. The pin structure for preventing the pin from falling off according to claim 7, characterized in that: A through hole (17) is formed at one end of the pin shaft body (1), the through hole (17) being a convex circular hole, a screw rod (19) being inserted into the through hole (17), one end of the screw rod (19) being fixed to the surface of the inserting strip (18), and a nut (20) being threadedly connected to the other end of the screw rod (19).

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