CN216111661U

CN216111661U - Rotary plug pin structure

Info

Publication number: CN216111661U
Application number: CN202122133507.2U
Authority: CN
Inventors: 华浪; 刘铁刚; 申桂英; 吴遵平; 谭宗宇; 王埝
Original assignee: Dongfeng Special Equipment Technology Co ltd
Current assignee: Dongfeng Special Equipment Technology Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-03-22
Anticipated expiration: 2031-09-06

Abstract

The utility model relates to the technical field of fastener structures, in particular to a rotary plug pin structure. Comprises a base, a sleeve arranged in the base and a bolt arranged in the sleeve in a penetrating way; a cylindrical pin protruding outwards along the radial direction is arranged on the part of the plug pin extending into the sleeve; the sleeve is provided with a guide groove arranged along the axial direction and a limit groove arranged along the circumferential direction; the cylindrical pin can slide in the guide groove and the limiting groove; the lower end of the guide groove is communicated with one end of the limiting groove, and the other end of the limiting groove is provided with an anti-falling structure for limiting the cylindrical pin to rotate around the axis of the sleeve; an elastic structure which applies axial acting force to the plug pin after the cylindrical pin enters the limiting groove is arranged between the plug pin and the sleeve. The rotary plug pin structure is extremely simple, extremely convenient to install and operate, good in locking effect, and not easy to cause the problem of locking failure even if the rotary plug pin structure is used in scenes with violent shaking, and has great popularization value.

Description

Rotary plug pin structure

Technical Field

The utility model relates to the technical field of fastener structures, in particular to a rotary plug pin structure.

Background

At present, the structural design of bolt fixing on equipment is mainly realized by adopting the following two forms:

one form is to install a spring at the rear end of the bolt, and the bolt is pushed forward by the elastic force of the spring to further play a role in locking. The disadvantage of this form is that when the bolt needs to retract, the bolt must be pulled back all the time by manually overcoming the spring force, and the stroke of pulling back is limited by the spring structure, the stroke of pulling back is limited, and the bolt cannot be used in the situation that a part of the bolt needs a larger stroke of pulling back or the spring must be designed to be very long, which results in an oversized whole mechanism.

The other form is that a handle is designed on the bolt, an external clamping plate is designed at the position where the bolt is inserted in place and pulled out in place, and the handle on the bolt is limited by the external clamping plate so as to control the inserting and pulling states of the bolt. The drawback of this bolt form lies in that the space that external cardboard occupy is great, can't use under the limited occasion in space, and in addition, the used external cardboard of this form mostly makes the bolt handle fall to the cardboard draw-in groove by relying on the action of gravity, has the occasion of change to some bolt gesture easily to make the handle drop and then lead to the bolt to become invalid.

In order to solve the technical problem, a chinese utility model patent entitled "a rotary self-locking latch device" with patent number "CN 212337848U" discloses a latch device, which comprises a first shell, two second shells with the same structure, a central rod, a compression spring and a rotary cap; the two ends of the first shell are open, the side wall of the first shell is provided with a guide groove, and one end of the guide groove transversely penetrates through one open end to form a notch; two ends of the guide groove are vertically communicated with two clamping grooves; the two second shells are respectively in threaded connection with two ends of the first shell, and form a hollow cavity with the first shell; one end of the central rod is provided with a butt external thread, and the other end of the central rod is a smooth surface; the central rod is positioned in the hollow cavity, and two ends of the central rod respectively extend out of the second shell on two sides; a limiting block on the central rod is matched with a channel formed by the two clamping grooves and the guide groove to lock and unlock; the compression spring is arranged in a second shell connected with the notch end of the first shell; the rotating cap is sleeved on the threaded end of the central rod extending out of the second shell. The device has simple structure and convenient use, and the bolt can be locked and unlocked by pressing the knob and rotating the cap. However, in the process of use, the limiting block is easy to disengage from the clamping groove, especially when the device is in a locking state, the limiting block and the transverse clamping groove part can be disengaged by slight rotation, so that the whole device loses the locking function.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solve the above-mentioned drawbacks of the prior art, and to provide a rotary plug pin structure.

The technical scheme of the utility model is as follows: a rotary plug pin structure comprises a base, a sleeve arranged in the base and a plug pin penetrating through the sleeve; a cylindrical pin protruding outwards in the radial direction is arranged on the part of the plug pin extending into the sleeve; the sleeve is provided with a guide groove arranged along the axial direction and a limiting groove arranged along the circumferential direction; the cylindrical pin can slide in the guide groove and the limiting groove; the lower end of the guide groove is communicated with one end of the limiting groove, and the other end of the limiting groove is provided with an anti-falling structure for limiting the cylindrical pin to rotate around the axis of the sleeve; and an elastic structure which applies axial acting force to the plug pin after the cylindrical pin enters the limiting groove is arranged between the plug pin and the sleeve.

Preferably, the anti-dropping structure comprises an anti-dropping groove; the anti-falling groove is axially arranged, one end of the anti-falling groove is communicated with one end of the limiting groove relative to the guide groove, and the other end of the anti-falling groove extends along the direction of acting force applied to the plug pin by the elastic structure after the cylindrical pin enters the limiting groove.

Preferably, the resilient structure comprises a spring; the spring is sleeved on the plug pin, the upper end of the spring is connected with the plug pin, the lower end of the spring is connected with the sleeve, and the spring is in a compressed state when the cylindrical pin enters the limiting groove.

Preferably, the sleeve is provided with a transverse groove arranged along the circumferential direction; the transverse groove and the limiting groove are arranged at intervals along the axial direction of the sleeve, one end of the transverse groove is communicated with the guide groove, and the other end of the transverse groove extends along the axial direction of the sleeve.

Preferably, the upper end of the sleeve is provided with an end cover for limiting the bolt to be separated from the sleeve; the end cover is fixed on the base and coaxially arranged with the sleeve, a through hole for passing through the bolt is formed in the middle of the end cover, and the inner ring of the end cover radially extends towards the axis of the sleeve to form a limiting structure for limiting the cylindrical pin to be separated from the sleeve.

Preferably, the inner ring of the end cover is provided with an avoiding hole for the cylindrical pin to pass through.

Preferably, the bolt is provided with a step surface protruding outwards along the radial direction; the upper end of the spring is connected to the step surface.

Preferably, the lower end of the sleeve is provided with a bottom plate; the lower end of the spring is connected to the bottom plate.

Preferably, a disc convenient for plugging and unplugging is arranged at the upper end of the plug pin.

Preferably, the upper end of the bolt is provided with a handle which is convenient to insert, pull and rotate.

The utility model has the advantages that: 1. compared with the existing rotary plugging pin shaft structure, the anti-disengaging structure is arranged in the sleeve, and can limit the cylindrical pin to rotate around the axis of the sleeve after the cylindrical pin enters the limiting groove, so that the problem that the cylindrical pin is disengaged from the limiting groove due to unintentional shaking to cause locking failure is avoided;

2. the anti-falling structure comprises the anti-falling groove, and when the cylindrical pin is clamped and enters the anti-falling groove, the cylindrical pin cannot be separated from the limiting groove simply due to shaking of the base or other structures unless the cylindrical pin is driven to be separated from the limiting groove in a pressing and rotating mode, so that locking is safer;

3. the elastic structure of the utility model is a spring, the spring is cheap and easy to obtain, the installation is convenient, and the assembly is very easy;

4. according to the utility model, the sleeve is provided with the transverse groove, and the transverse groove can be used for placing the cylindrical pin after locking is finished, so that the cylindrical pin is limited to be directly separated from the sleeve;

5. the end cover is arranged at the upper end of the sleeve, the end cover can further limit the bolt to be separated from the sleeve, and the whole structure is safer;

6. according to the utility model, the end cover is provided with the avoidance hole, and the bolt can be conveniently installed into the sleeve through the avoidance hole, so that the installation is convenient;

7. the spring is convenient to mount by arranging the step surface and the bottom plate, and the stress of the spring is more concentrated;

8. the disc and the handle are arranged, so that the plug pin can be conveniently plugged and pulled out and rotated, and the operation is convenient.

9. This use neotype bolt and sleeve be clearance fit, satisfy the smooth and easy needs of plug promptly, can also make the bolt bear great power.

The rotary plug pin is extremely simple in structure, extremely reasonable in stress, extremely convenient to install and operate, good in locking effect, not easy to cause the problem of locking failure even if used in scenes with severe shaking, and extremely high in popularization value.

Drawings

FIG. 1: an axial view of the utility model;

FIG. 2: the explosion schematic of the present invention;

wherein: 1-a base; 2, a sleeve; 3, inserting a pin; 4-cylindrical pin; 5, a guide groove; 6, limiting grooves; 7, anti-drop grooves; 8, a spring; 9-transverse grooves; 10-end cap; 11-avoiding holes; 12-a base plate; 13-disc; 14-handle.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The utility model is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1-2, the embodiment relates to a rotary plug pin structure, which comprises a base 1, wherein the base 1 is a part of an equipment body, a hole is formed in the base 1, a sleeve 2 is installed in the hole, the upper end and the lower end of the sleeve 2 are provided with open tubular structures, a plug pin 3 is installed in the sleeve 2, and the plug pin 3 can axially move along the sleeve 2 in the sleeve 2 and rotate around the axis of the sleeve 2.

As shown in fig. 2, in the present embodiment, a guide groove 5 arranged in the axial direction of the sleeve 2, a limit groove 6 arranged in the circumferential direction, a separation-preventing groove 7 arranged in the axial direction, and a transverse groove 9 arranged in the circumferential direction are formed in the circumferential side wall of the sleeve 2. The bolt 3 of this embodiment is provided with a cylindrical pin 4 matched with the bolt, one end of the cylindrical pin 4 of this embodiment is fixed on the side part of the body of the bolt 3, the other end extends outwards along the radial direction, and the cylindrical pin 4 is inserted into the guide groove 5, the limiting groove 6, the anti-falling groove 7 and the transverse groove 9 and can slide in the grooves. One end of the limiting groove 6 is communicated with the lower end of the guide groove 5 (in practical application, the limiting groove is not limited to be communicated with the lower end of the guide groove 5, and may be a position close to the lower end, as long as the function described in the present embodiment can be realized), the other end is communicated with the lower end of the anti-falling groove 7 (the lower end of the anti-falling groove 7 may also be provided, depending on the direction of the acting force received after the cylindrical pin 4 enters the limiting groove 6), and one end of the transverse groove 9 is communicated with the upper end of the guide groove 5 (the transverse groove 9 in the present embodiment is arranged at the upper end of the sleeve 2, and forms a groove-shaped structure with the end cover 10 at the upper end of the sleeve 2). Make cylindric lock 4 enter into guide way 5 through pressing down bolt 3 in, then rotatory bolt 3 makes cylindric lock 4 enter into spacing groove 6 from guide way 5, just can reach this moment and carry out the spacing purpose of locking to bolt 3, in order to avoid bolt 3 at the in-process of rocking, thereby cylindric lock 4 rotates around 3 axes of bolt and breaks away from spacing groove 6, this embodiment sets up anticreep groove 7, cylindric lock 4 that enters into spacing groove 6 promptly enters into anticreep groove 7 at the further rotatory in-process of bolt 3, anticreep groove 7 restricts the rotation of cylindric lock 4 around 3 axes directions of bolt, make whole locking more stable. After the locking is finished, the bolt 3 is rotated to enable the cylindrical pin 4 to enter the transverse groove 9 from the anti-falling groove 7 through the limiting groove 6 and the guide groove 5, and the transverse groove 9 limits the bolt 3 to fall off the sleeve 2.

The plug pin 3 of the present embodiment is divided into two segments, including an upper pin body having a larger diameter at the upper portion and a lower pin body having a smaller diameter at the lower portion, and a step surface is formed at the junction of the upper pin body and the lower pin body. In this embodiment, the spring 8 is sleeved on the lower pin body, the bottom of the sleeve 2 is provided with the bottom plate 12, the spring 8 is located between the bottom plate 12 and the step surface, the upper end of the spring 8 abuts against the step surface, the lower end abuts against the bottom plate 12, and after the cylindrical pin 4 enters the limiting groove 6, the spring 8 is in a compressed state.

As shown in fig. 1 and 2, in the embodiment, an end cover 10 is disposed at the upper end of the sleeve 2, the end cover 10 is fixed on the base 1 and is disposed coaxially with the sleeve 2, a through hole for passing the plug pin 3 is formed in the middle of the end cover 10, an inner ring of the end cover 10 extends along a radial direction toward an axis of the sleeve 2 to form a limiting structure for limiting the cylindrical pin 4 from coming out of the sleeve 2, and an avoiding hole 11 for the cylindrical pin 3 to pass through is formed in the inner ring of the end cover 10. During the installation, cylindric lock 4 can be followed and dodged hole 11 and entered into in the sleeve 2, can take bolt 3 out from sleeve 2 through dodging hole 11 when dismantling.

In order to facilitate the operation of the plug pin 3, in this embodiment, a disc 13 and a handle 14 are disposed at the upper end of the plug pin 3 for facilitating the insertion and extraction, and the plug pin 3 is conveniently inserted and extracted and rotated, and the handle 14 is a short rod, one end of which is fixed on the plug pin 3, and the other end of which extends radially outward.

During the in-service use, at first installation bolt 3 enters into sleeve 2, fix end cover 10 on base 1 through bolted construction, cup joint spring 8 on bolt 3, then pass end cover 10 together and stretch into sleeve 2, cylindric lock 4 is aimed at and is dodged hole 11 and enter into sleeve 2, rotatory bolt 3 makes cylindric lock 4 aim at the upper end entry of guide way 5, press the disc 13 of bolt 3 upper end, make cylindric lock 4 move along guide way 5, until cylindric lock 4 reaches the entrance of spacing groove 6, rotatory bolt 3, make cylindric lock 4 enter into spacing groove 6, continue to rotate until cylindric lock 4 reaches the entry of anticreep groove 7, loosen disc 13, under the effort of spring 8, cylindric lock 4 is pushed up the upper end of anticreep groove 7, accomplish the locking.

When the unlocking is needed, the disc 13 is pressed, the cylindrical pin 4 enters the limiting groove 6 from the anti-falling groove 7, the bolt 3 is rotated to enable the cylindrical pin 4 to enter the guide groove 5 until the cylindrical pin 4 reaches the entrance of the transverse groove 9, and the bolt 4 is rotated to enable the cylindrical pin 4 to enter the transverse groove 9, so that the unlocking is completed.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rotatory plug round pin structure which characterized in that: comprises a base (1), a sleeve (2) arranged in the base (1) and a bolt (3) arranged in the sleeve (2) in a penetrating way; a cylindrical pin (4) protruding outwards in the radial direction is arranged on the part of the plug pin (3) extending into the sleeve (2); the sleeve (2) is provided with a guide groove (5) arranged along the axial direction and a limit groove (6) arranged along the circumferential direction; the cylindrical pin (4) can slide in the guide groove (5) and the limiting groove (6); the lower end of the guide groove (5) is communicated with one end of a limiting groove (6), and the other end of the limiting groove (6) is provided with an anti-falling structure for limiting the cylindrical pin (4) to rotate around the axis of the sleeve (2); an elastic structure which applies axial acting force to the bolt (3) after the cylindrical pin (4) enters the limiting groove (6) is arranged between the bolt (3) and the sleeve (2).

2. The rotary push-pull pin structure according to claim 1, characterized in that: the anti-falling structure comprises an anti-falling groove (7); the anti-falling groove (7) is axially arranged, one end of the anti-falling groove (7) is communicated with one end of the limiting groove (6) relative to the guide groove (5), and the other end of the anti-falling groove extends along the direction of acting force applied to the bolt (3) after the cylindrical pin (4) enters the limiting groove (6) along the elastic structure.

3. A rotary insert pin structure according to claim 1 or 2, wherein: the elastic structure comprises a spring (8); spring (8) cup joints on bolt (3), upper end connecting pin (3), lower extreme connecting sleeve (2), and spring (8) are in compression state when cylindric lock (4) enter into spacing groove (6).

4. The rotary push-pull pin structure according to claim 1, characterized in that: the sleeve (2) is provided with a transverse groove (9) which is arranged along the circumferential direction; transverse groove (9) and spacing groove (6) are arranged along sleeve (2) axial interval, and transverse groove (9) one end and guide way (5) intercommunication, other end along sleeve (2) axial extension.

5. The rotary push-pull pin structure according to claim 1, characterized in that: the upper end of the sleeve (2) is provided with an end cover (10) for limiting the bolt (3) to be separated from the sleeve (2); the end cover (10) is fixed on the base (1) and is coaxially arranged with the sleeve (2), a through hole for passing through the plug pin (3) is formed in the middle of the end cover (10), and an inner ring of the end cover (10) extends along the radial direction to the axis of the sleeve (2) to form a limiting structure for limiting the cylindrical pin (4) to be separated from the sleeve (2).

6. The rotary push-pull pin structure according to claim 5, characterized in that: and an avoidance hole (11) for the cylindrical pin (4) to pass through is formed in the inner ring of the end cover (10).

7. A rotary insert pin structure according to claim 3, wherein: a step surface which protrudes outwards along the radial direction is arranged on the bolt (3); the upper end of the spring (8) is connected to the step surface.

8. A rotary insert pin structure according to claim 3 or 7, wherein: the lower end of the sleeve (2) is provided with a bottom plate (12); the lower end of the spring (8) is connected to the bottom plate (12).

9. The rotary push-pull pin structure according to claim 1, characterized in that: the upper end of the bolt (3) is provided with a disc (13) which is convenient to insert and pull.

10. The rotary push-pull pin structure according to claim 1, characterized in that: the upper end of the bolt (3) is provided with a handle (14) which is convenient to insert, pull and rotate.