CN212536368U - Pin with anti-drop function - Google Patents

Abstract

The utility model discloses a pin with anti-drop function, including first part and second part, the mounting hole has all been seted up on the surface of first part and second part, the inner wall swing joint of mounting hole has anticreep pin device, anticreep pin device includes the pin casing, the surface of pin casing and the inner wall swing joint of mounting hole, the through-hole has been seted up to the front end of pin casing and has been had the screw rod through the spacing rotation of through-hole, the surperficial spiro union of screw rod has the thread bush. The utility model discloses, use through the cooperation between the above-mentioned structure, solved in the in-service use, because fastening stopper and fastening hole are the tight fit state, it is comparatively troublesome with the cooperation of fastening hole to lead to fastening stopper easily, the dismouting difficulty, and after repetitious usage, the inner wall in fastening stopper and fastening hole all appears wearing and tearing, makes the tight fit state effect reduce, and the also greatly reduced of anticreep effect brings inconvenient problem for the use.

Description

Pin with anti-drop function

Technical Field

The utility model relates to a pin equipment technical field specifically is a pin with anti-drop function.

Background

A pin is one of the fasteners commonly used in mechanical parts and is generally cylindrical in shape and tapered at one end to secure two or more separate parts together and prevent relative misalignment between the parts.

In a die for producing automobile parts, two working parts of the die need to be positioned by pins when being connected, for example, when an upper die working part of the die is connected with an upper die body. If the gap between the arranged pin hole and the pin is too large, the pin is easy to fall off to cause the movement of a working part, further to cause the damage of the working part of the die, and the die cannot be normally produced; if the pin is tightly matched with the pin hole to prevent the pin from falling off, the pin is inconveniently inserted into the pin hole, so that an anti-falling pin is proposed, for example, a pin anti-falling structure for producing a mold for automobile parts, disclosed in chinese patent CN208033466U, includes: the pin hole penetrates through the part to be connected of the die; the pin is arranged in the pin hole, one end of the pin is cylindrical, and the other end of the pin is conical; the fastening hole is arranged on one part to be connected with the die and communicated with the pin hole, and the diameter of the fastening hole is larger than that of the pin hole; and the fastening plug is arranged in the fastening hole and is in a tight fit state with the fastening hole. The utility model discloses the pin anti-drop structure of production auto parts mould can make the pin be difficult for droing, has guaranteed the mould normal production;

but in the in-service use process, because the fastening stopper is the tight fit state with the fastening hole, it is comparatively troublesome to lead to the cooperation of fastening stopper and fastening hole easily, and the dismouting difficulty, and after repetitious usage, wearing and tearing all appear in the inner wall of fastening stopper and fastening hole, make the tight fit state effect reduce, and anticreep effect greatly reduced also brings inconvenience for the use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pin with anti-drop function possesses stronger frictional resistance, has obvious anti-drop advantage, has solved the problem of proposing in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pin with anti-drop function, includes first part and second part, the mounting hole has all been seted up on the surface of first part and second part, the inner wall swing joint of mounting hole has anti-drop pin device.

The anti-drop pin device comprises a pin shell, the surface of the pin shell is movably connected with the inner wall of the mounting hole, the front end of the pin shell is provided with a through hole and is limited and rotated by the through hole to form a screw rod, the surface of the screw rod is screwed with a thread sleeve, the side surface of the threaded sleeve is rotationally connected with the inner wall of the pin shell, the inner wall of the pin shell is fixedly connected with a positioning rod, the surface of the positioning rod penetrates through the threaded sleeve and is in sliding connection with the threaded sleeve, the rear side of the threaded sleeve is fixedly connected with a toothed plate, an inclined plane pressing block is fixedly connected to one side of the toothed plate, which is far away from the screw rod, a groove is formed in the side surface of the pin shell, a pressing plate is connected to the side surface of the pin shell in a sliding mode through the groove, one side fixedly connected with depression bar that is close to the screw rod on the clamp plate, the terminal surface of depression bar run through the pin casing and with the inclined plane sliding connection on the inclined plane briquetting, the lower surface swing joint of pinion rack has auxiliary device.

Preferably, auxiliary device includes spacing pivoted pivot on pin shells inner wall, the fixed surface of pivot is connected with the gear, the tooth meshing on the upper surface of gear and the pinion rack lower surface, the surface cover of pivot has the cam, the logical groove that supplies the cam to pass is seted up on the upper and lower surface of pin shell.

Preferably, the front end of the screw rod is fixedly connected with a knob, and anti-skid protrusions are arranged on the surface of the knob.

Preferably, the number of the positioning rods is two, and the two positioning rods are symmetrically arranged by using the vertical central line of the threaded sleeve.

Preferably, the front side fixedly connected with dog of inclined plane briquetting, keep away from the inner wall sliding connection of pinion rack and pin casing on the dog.

Preferably, one end of the pressure lever, which is far away from the pressure plate, is an arc-shaped surface, and the pressure lever is in sliding connection with the inclined plane on the inclined plane pressure block through the arc-shaped surface on the pressure lever.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has the advantages that the anti-drop pin device is arranged, so that the installation and the use are more tight, and the anti-drop effect of the whole pin is improved;

when the pin is used, the first component and the second component are assembled, and then the pin shell is inserted into the mounting hole;

then, the screw rod is driven to rotate on the pin shell in a limiting manner, so that the thread sleeve in threaded fit with the screw rod tends to rotate synchronously with the screw rod, but after the thread sleeve is penetrated by the positioning rod, the movement track of the thread sleeve is influenced, and the thread sleeve can only move back and forth on the positioning rod;

when the screw rod rotates, the internal thread on the thread sleeve can rotate relative to the surface of the screw rod; the threaded sleeve can move forwards or backwards on the screw rod by changing the rotation direction of the screw rod, and the toothed plate on the threaded sleeve moves synchronously with the threaded sleeve;

after the threaded sleeve moves backwards, the toothed plate drives the inclined plane pressing block to synchronously move backwards through transmission of the toothed plate, the end part of the pressing rod can relatively slide on the inclined plane pressing block through backward movement of the inclined plane pressing block, the pressing rod can be extruded, the pressing rod drives the pressing plate to be exposed out of the groove, the moved pressing plate can gradually contact with the inner wall of the mounting hole and generate extrusion, friction resistance is increased, and a locking effect is finally achieved; when the pin shell is installed and inserted, the surface of the pressing plate is opposite to the junction of the first component and the second component, after the pressing plate is pushed out, the pressing plate can be in extrusion contact with the inner walls of the installation holes in the first component and the second component, finally, the splicing of the first component and the second component is reinforced and locked, and meanwhile, the anti-falling pin device is prevented from falling off from the installation holes;

through the arrangement of the auxiliary device, the friction force can be further increased, and the anti-falling effect is achieved;

through the cooperation use between the above-mentioned structure, solved in the in-service use, because the fastening stopper is the close-fitting state with the fastening hole, it is comparatively troublesome with the cooperation in fastening hole to lead to the fastening stopper easily, the dismouting difficulty, and after repetitious usage, wearing and tearing all appear in the inner wall in fastening stopper and fastening hole, make close-fitting state effect reduce, the also greatly reduced of anticreep effect brings inconvenient problem for the use.

Drawings

Fig. 1 is a top view of the structure of the present invention;

fig. 2 is a top cross-sectional view of the pin housing of the present invention;

fig. 3 is a bottom view of the toothed plate of the present invention.

In the figure: 1. a first member; 2. a second component; 3. mounting holes; 4. an anti-drop pin device; 5. a pin housing; 6. a screw; 7. a threaded sleeve; 8. positioning a rod; 9. a toothed plate; 10. a bevel pressing block; 11. a groove; 12. pressing a plate; 13. a pressure lever; 14. an auxiliary device; 15. a rotating shaft; 16. a gear; 17. a cam; 18. a through groove; 19. a knob; 20. and a stop block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a pin with an anti-falling function comprises a first part 1 and a second part 2, wherein mounting holes 3 are formed in the surfaces of the first part 1 and the second part 2, an anti-falling pin device 4 is movably connected to the inner wall of each mounting hole 3, and the anti-falling pin device 4 is arranged to be more tightly mounted and used, so that the anti-falling effect of the whole pin is improved;

the anti-falling pin device 4 comprises a pin shell 5, the surface of the pin shell 5 is movably connected with the inner wall of the mounting hole 3, when the anti-falling pin device is used, the first component 1 and the second component 2 are assembled, and then the pin shell 5 is inserted into the mounting hole 3;

the front end of the pin shell 5 is provided with a through hole, the screw rod 6 is limited and rotated through the through hole, the front end of the screw rod 6 is fixedly connected with the knob 19, the surface of the knob 19 is provided with anti-skidding protrusions, the screw rod 6 is conveniently driven to rotate through the arrangement of the knob 19 on the front end of the screw rod 6, and the anti-skidding protrusions are arranged on the screw rod to help to avoid the phenomenon of skidding; the stability of the limited rotation of the screw 6 on the pin shell 5 can be further ensured by adding common structures such as a limit ring and the like;

the surface of the screw 6 is in threaded connection with a threaded sleeve 7, the side face of the threaded sleeve 7 is rotationally connected with the inner wall of the pin shell 5, the inner wall of the pin shell 5 is fixedly connected with a positioning rod 8, the surface of the positioning rod 8 penetrates through the threaded sleeve 7 and is in sliding connection with the threaded sleeve 7, the screw 6 is manually driven to rotate in a limiting mode on the pin shell 5, the threaded sleeve 7 in threaded fit with the screw 6 tends to rotate synchronously with the screw, but after the positioning rod 8 penetrates through the threaded sleeve 7, the movement track of the threaded sleeve 7 can be affected, and the threaded sleeve 7 can only move back and forth on the positioning rod 8;

the number of the positioning rods 8 is two, the two positioning rods 8 are symmetrically arranged by the vertical central line of the threaded sleeve 7, and the two positioning rods 8 are symmetrically arranged, so that the stress of the threaded sleeve 7 can be more balanced, the friction resistance in driving is reduced, and the use is more labor-saving;

a toothed plate 9 is fixedly connected to the rear side of the threaded sleeve 7, and the tooth surface of the toothed plate 9 faces downwards; when the screw rod 6 rotates, the internal thread on the thread sleeve 7 can rotate relative to the surface of the screw rod 6; the threaded sleeve 7 can move forwards or backwards on the threaded rod 6 by changing the rotation direction of the threaded rod 6, and the toothed plate 9 on the threaded sleeve 7 moves synchronously with the threaded sleeve;

an inclined plane pressing block 10 is fixedly connected to one side, far away from the screw 6, of the toothed plate 9, a groove 11 is formed in the side face of the pin shell 5, the pressing plate 12 is connected with the side face of the pin shell in a sliding mode through the groove 11, the pressing plate 12 is composed of two layers of structures, rubber materials are arranged on the outline of the outer layer, deformation can occur when the rubber materials are extruded, the contact area is increased, hard thin slices are arranged inside the pressing plate, sufficient supporting strength can be provided for the rubber materials, pressure on the pressing rod 13 can be evenly transmitted to the rubber materials, and the rubber materials can be in full contact with the inner wall;

one side of the pressing plate 12 close to the screw 6 is fixedly connected with a pressing rod 13, the end face of the pressing rod 13 penetrates through the pin shell 5 and is in sliding connection with an inclined plane on the inclined plane pressing block 10, after the threaded sleeve 7 moves backwards, the toothed plate 9 drives the inclined plane pressing block 10 to synchronously move backwards through transmission of the toothed plate 9, through backward movement of the inclined plane pressing block 10, the end part of the pressing rod 13 can slide relatively on the inclined plane pressing block 10, the pressing rod 13 can be extruded, the pressing rod 13 drives the pressing plate 12 to be exposed out of the groove 11, the moved pressing plate 12 can gradually contact with the inner wall of the mounting hole 3 and extrude, friction resistance is increased, and a locking effect is finally achieved; when the pin shell 5 is installed and inserted, the surface of the pressing plate 12 is opposite to the junction of the first component 1 and the second component 2, after the pressing plate 12 is pushed out, the pressing plate can be in extrusion contact with the inner walls of the installation holes 3 in the first component 1 and the second component 2, and finally the splicing of the first component 1 and the second component 2 is reinforced and locked, and meanwhile, the anti-falling pin device 4 is prevented from falling off from the installation holes 3;

the front side of the inclined plane pressing block 10 is fixedly connected with a stop block 20, one side, far away from the toothed plate 9, of the stop block 20 is in sliding connection with the inner wall of the pin shell 5, the stop block 20 on the inclined plane pressing block 10 plays a role in blocking, and the situation that the pressure rod 13 slides from a flange on the inclined plane pressing block 10 due to the fact that the relative sliding distance between the pressure rod 13 and the inclined plane pressing block 10 is excessive and the pressure rod 13 slides from the flange on the inclined plane pressing block 10 is avoided;

one end of the pressure rod 13, which is far away from the pressure plate 12, is an arc-shaped surface, the pressure rod 13 is in sliding connection with the inclined surface of the inclined-surface pressure block 10 through the arc-shaped surface on the pressure rod, and the pressure rod 13 can slide on the inclined-surface pressure block 10 more smoothly through the arrangement of the arc-shaped surface on the pressure rod 13, so that the friction resistance during driving is reduced, and the use is convenient;

the lower surface of the toothed plate 9 is movably connected with an auxiliary device 14, and friction force can be further increased through the arrangement of the auxiliary device 14, so that an anti-falling effect is achieved;

the auxiliary device 14 comprises a rotating shaft 15 which limits rotation on the inner wall of the pin shell 5, a gear 16 is fixedly connected to the surface of the rotating shaft 15, the upper surface of the gear 16 is meshed with teeth on the lower surface of the toothed plate 9, a cam 17 is sleeved on the surface of the rotating shaft 15, a through groove 18 for the cam 17 to pass through is formed in the upper surface and the lower surface of the pin shell 5, the gear 16 meshed with the gear is driven to rotate by the back and forth movement of the toothed plate 9, the rotating shaft 15 is driven to limit rotation in the pin shell 5 by the gear 16, the cam 17 is driven to rotate by the rotating shaft 15, the cam 17 is exposed from the through groove 18 by rotation, and finally contacts with the inner wall of the mounting hole 3 and generates extrusion, so that the friction resistance between the cam and the inner wall of the mounting hole;

the working principle is as follows: when the pin with the anti-falling function is used, the pin is more tightly installed and used through the arrangement of the anti-falling pin device 4, so that the integral anti-falling effect of the pin is improved; assembling the first component 1 and the second component 2, and then inserting the pin shell 5 into the mounting hole 3; the screw 6 is driven to rotate on the pin shell 5 in a limiting manner manually, so that the thread bush 7 in threaded fit with the screw 6 tends to rotate synchronously with the screw, but after the thread bush 7 is penetrated by the positioning rod 8, the movement track of the thread bush 7 is influenced, and the thread bush 7 can only move back and forth on the positioning rod 8; when the screw rod 6 rotates, the internal thread on the thread sleeve 7 can rotate relative to the surface of the screw rod 6; the threaded sleeve 7 can move forwards or backwards on the threaded rod 6 by changing the rotation direction of the threaded rod 6, and the toothed plate 9 on the threaded sleeve 7 moves synchronously with the threaded sleeve; after the threaded sleeve 7 moves backwards, the toothed plate 9 drives the inclined plane pressing block 10 to synchronously move backwards through transmission of the toothed plate 9, the end part of the pressing rod 13 can relatively slide on the inclined plane of the inclined plane pressing block 10 through backward movement of the inclined plane pressing block 10, the pressing rod 13 can be extruded, the pressing rod 13 drives the pressing plate 12 to expose from the groove 11, the moved pressing plate 12 can gradually contact with the inner wall of the mounting hole 3 and generate extrusion, friction resistance is increased, and a locking effect is finally achieved; when the pin shell 5 is installed and inserted, the surface of the pressing plate 12 is opposite to the junction of the first component 1 and the second component 2, after the pressing plate 12 is pushed out, the pressing plate can be in extrusion contact with the inner walls of the installation holes 3 in the first component 1 and the second component 2, and finally the splicing of the first component 1 and the second component 2 is reinforced and locked, and meanwhile, the anti-falling pin device 4 is prevented from falling off from the installation holes 3; through the cooperation use between the above-mentioned structure, solved in the in-service use, because the fastening stopper is the close-fitting state with the fastening hole, it is comparatively troublesome with the cooperation in fastening hole to lead to the fastening stopper easily, the dismouting difficulty, and after repetitious usage, wearing and tearing all appear in the inner wall in fastening stopper and fastening hole, make close-fitting state effect reduce, the also greatly reduced of anticreep effect brings inconvenient problem for the use.

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

Claims (6)

1. The utility model provides a pin with anti-drop function, includes first part (1) and second part (2), mounting hole (3), its characterized in that have all been seted up on the surface of first part (1) and second part (2): the inner wall of the mounting hole (3) is movably connected with an anti-falling pin device (4);

the anti-falling pin device (4) comprises a pin shell (5), the surface of the pin shell (5) is movably connected with the inner wall of the mounting hole (3), the front end of the pin shell (5) is provided with a through hole and is provided with a screw rod (6) through the through hole in a limiting rotation manner, the surface of the screw rod (6) is screwed with a threaded sleeve (7), the side surface of the threaded sleeve (7) is rotatably connected with the inner wall of the pin shell (5), the inner wall of the pin shell (5) is fixedly connected with a positioning rod (8), the surface of the positioning rod (8) penetrates through the threaded sleeve (7) and is in sliding connection with the threaded sleeve (7), the rear side of the threaded sleeve (7) is fixedly connected with a toothed plate (9), one side of the toothed plate (9) far away from the screw rod (6) is fixedly connected with an inclined plane pressing block (10), the side surface of the pin shell (5) is provided with a groove (11) and is, one side fixedly connected with depression bar (13) that is close to screw rod (6) on clamp plate (12), the terminal surface of depression bar (13) run through pin casing (5) and with inclined plane sliding connection on inclined plane briquetting (10), the lower surface swing joint of pinion rack (9) has auxiliary device (14).

2. The pin with a drop-preventing function according to claim 1, wherein: auxiliary device (14) include spacing pivoted pivot (15) on pin casing (5) inner wall, the fixed surface of pivot (15) is connected with gear (16), the tooth meshing on the upper surface of gear (16) and pinion rack (9) lower surface, the surface cover of pivot (15) has cam (17), logical groove (18) that supply cam (17) to pass are seted up to the upper and lower surface of pin casing (5).

3. The pin with a drop-preventing function according to claim 1, wherein: the front end of the screw rod (6) is fixedly connected with a knob (19), and anti-skidding protrusions are arranged on the surface of the knob (19).

4. The pin with a drop-preventing function according to claim 1, wherein: the number of the positioning rods (8) is two, and the two positioning rods (8) are symmetrically arranged by using the vertical central line of the threaded sleeve (7).

5. The pin with a drop-preventing function according to claim 1, wherein: the front side of inclined plane briquetting (10) is fixedly connected with dog (20), keep away from one side and the inner wall sliding connection of pin casing (5) of pinion rack (9) on dog (20).

6. The pin with a drop-preventing function according to claim 1, wherein: one end of the pressure lever (13) far away from the pressure plate (12) is an arc-shaped surface, and the pressure lever (13) is connected with the inclined surface of the inclined-surface pressure block (10) in a sliding manner through the arc-shaped surface.

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