阅读说明：本技术 一种螺纹连接件的防卡死机构 (Anti-locking mechanism of threaded connecting piece ) 是由 徐涛 刘贤兴 张昱帆 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种螺纹连接件的防卡死机构,包括螺纹连接件,所述的螺纹连接件的一端轴向布置的堵头,所述的堵头与螺纹连接件之间设置有可沿着螺纹连接件轴向移动的卡销,所述的卡销的一端与堵头之间设置有弹性件,另一端朝向螺纹连接件的端面,所述的螺纹连接件单向转动接触到卡销时与卡销的端面在旋转方向上相抵无法转动。本发明结构简单,在螺纹连接件末端设置防转结构,有效避免了螺纹连接件转动到极限位置而卡死,具有很好的通用性,适合应用到各个使用场合。(The invention discloses an anti-locking mechanism of a threaded connecting piece, which comprises the threaded connecting piece, wherein a plug is axially arranged at one end of the threaded connecting piece, a bayonet lock capable of moving along the axial direction of the threaded connecting piece is arranged between the plug and the threaded connecting piece, an elastic piece is arranged between one end of the bayonet lock and the plug, the other end of the bayonet lock faces the end face of the threaded connecting piece, and the threaded connecting piece is abutted against the end face of the bayonet lock to be incapable of rotating when contacting the bayonet lock in a unidirectional rotation mode. The anti-rotation structure is arranged at the tail end of the threaded connecting piece, the threaded connecting piece is effectively prevented from being locked due to rotation to the limit position, and the anti-rotation structure has good universality and is suitable for being applied to various use occasions.)

1. The utility model provides a threaded connection spare anti-sticking mechanism, includes threaded connection spare (3), its characterized in that, the one end axial of threaded connection spare (3) arrange end cap (1), end cap (1) and threaded connection spare (3) between be provided with bayonet lock (2) that can be along threaded connection spare (3) axial displacement, one end of bayonet lock (2) and end cap (1) between be provided with the elastic component, the other end is towards the terminal surface of threaded connection spare (3), threaded connection spare (3) when single-direction rotation contacts bayonet lock (2) with the terminal surface of bayonet lock (2) offset and unable rotation on the direction of rotation.

2. The threaded connection anti-seize mechanism of claim 1, wherein: one end of the plug (1) is provided with an anti-rotation groove (6) for the bayonet lock (2) to insert.

3. The anti-seize mechanism for threaded connections according to claim 2, characterized in that: one end of bayonet lock (2) round the circumference be provided with at least one joint piece (21), joint piece (21) insert corresponding anti-rotating groove (6) on the terminal surface of end cap (1), the terminal surface of threaded connection spare (3) on be provided with lug (31) corresponding with joint piece (21), the terminal surface of joint piece (21) and/or lug (31) on be provided with one-way inclined plane (25).

4. The anti-seize mechanism for threaded connections according to claim 2, characterized in that: bayonet lock (2) including inserting inserted bar (22) in end cap (1), joint piece (21) set up the one end at inserted bar (22).

5. The anti-seize mechanism for threaded connections according to claim 2, characterized in that: the convex block (31) is a wedge-shaped bulge, and one side of the axial end face of the clamping block (21) is provided with a one-way inclined plane (25) matched with the convex block (31).

6. The anti-seize mechanism for threaded connections according to claim 4, wherein: the elastic piece is a spring (4) which is sleeved on the outer side of the inserted rod (22).

7. The anti-seize mechanism for threaded connections according to claim 1, characterized in that: one end of the bayonet pin (2) penetrates through the bottom of the plug (1) to be connected with the limiting piece (5).

8. The anti-seize mechanism for threaded connections according to claim 1, characterized in that: the end face of the bayonet lock (2) is provided with a plurality of one-way convex blocks with inclined planes around the circumference, and the end face of the threaded connecting piece (3) is provided with one-way grooves matched with the convex blocks in shape.

Technical Field

The invention relates to the field of cargo fastening devices, in particular to an anti-locking mechanism of a threaded connecting piece.

Background

The threaded connection piece is widely applied to the industry, when the threaded connection piece is used, the threaded connection piece is generally inserted into a mounting hole and rotates to adjust the axial position, and resistance can be met when the threaded connection piece is screwed down, if screwing is too forceful, threads at the extreme position can bear great axial force, the thread can be clamped, once the threaded connection piece is clamped, the threaded connection piece is difficult to loosen, and in some occasions where tightness is often realized by the rotation of the threaded connection piece (for example, in a tightener used in goods transportation, a binding chain can be often used for tightening and tightening the binding chain can be used for realizing tightening and opening through chain tightening), the use is frequent, and subsequent operation can be greatly influenced if the threads are clamped.

Disclosure of Invention

The anti-locking mechanism of the threaded connecting piece is simple in structure, the anti-rotating structure is arranged at the tail end of the threaded connecting piece, the threaded connecting piece is effectively prevented from being locked due to rotation to the limit position, the anti-locking mechanism is high in universality, and the anti-locking mechanism is suitable for being applied to various use occasions.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a threaded connection spare's anti-sticking mechanism, includes threaded connection spare, threaded connection spare's one end axial arrangement's end cap, end cap and threaded connection spare between be provided with the bayonet lock that can move along the threaded connection spare axial, the one end of bayonet lock and end cap between be provided with the elastic component, the other end is towards threaded connection spare's terminal surface, threaded connection spare one-way rotation when contacting the bayonet lock offset on the direction of rotation and can't rotate with the terminal surface of bayonet lock.

The rotation of threaded connection spare can make threaded connection spare be close to the end cap, and when threaded connection spare's terminal surface contacted with the terminal surface of bayonet lock, promote bayonet lock axial displacement, and threaded connection spare offsets with the terminal surface unidirectional rotation of bayonet lock, and threaded connection spare can't carry out unidirectional rotation, has realized threaded connection spare prevents changeing, prevents that the screw thread card on the threaded connection spare from dying.

Preferably, one end of the bayonet lock is provided with at least one clamping block around the circumference, the clamping block is inserted into a corresponding anti-rotation groove on the end face of the plug, a convex block corresponding to the clamping block is arranged on the end face of the threaded connection piece, an unidirectional inclined plane is arranged on the end face of the clamping block and/or the convex block, and the unidirectional inclined plane can generate axial force when the clamping block and the convex block are in contact with each other to push the bayonet lock to move axially, so that the axial pushing of the bayonet lock by the threaded connection piece is realized.

Preferably, the bayonet lock comprises an inserted link inserted into the plug, and the clamping block is arranged at one end of the inserted link.

Preferably, the projection is a wedge-shaped projection, one side of the axial end face of the clamping block is provided with a one-way inclined plane matched with the projection, and the inclined plane on the projection and the one-way inclined plane on the clamping block can easily enable the clamping pin to axially retreat when the threaded connecting piece rotates reversely.

Preferably, the elastic element is a spring sleeved outside the inserted link and can provide a stable restoring force for the bayonet lock.

Preferably, one end of the bayonet lock penetrates through the bottom of the plug to be connected with the limiting part, the limiting part limits the moving range of the bayonet lock, and the moving range of the bayonet lock can be adjusted by adjusting the position of the limiting part.

As another scheme, a plurality of one-way convex blocks with inclined planes are arranged on the end face of the bayonet lock around the circumference, one-way grooves matched with the convex blocks in shape are arranged on the end face of the threaded connecting piece, and the bayonet lock can be driven to rotate in one way by the threaded connecting piece through the embedding of the one-way convex blocks and the one-way grooves.

Compared with the prior art, the invention has the beneficial effects that:

set up at threaded connection spare end and prevent rotating-proof structure, prevent to produce great axial force between threaded connection spare's the screw thread, effectively avoided threaded connection spare to rotate extreme position and the card is dead, has fine commonality, is fit for using each use occasion.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view semi-section block diagram of the present invention;

FIG. 3 is a perspective end view of the threaded connection of the present invention;

FIG. 4 is a perspective view of the bayonet of the present invention;

fig. 5 is a half-sectional view showing a state of use of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, the invention provides an anti-seize mechanism of a threaded connector, which comprises a threaded connector 3, wherein a plug 1 is axially arranged at one end of the threaded connector 3, a bayonet 2 capable of axially moving along the threaded connector 3 is arranged between the plug 1 and the threaded connector 3, an elastic part is arranged between one end of the bayonet 2 and the plug 1, the other end of the bayonet faces the end face of the threaded connector 3, and the threaded connector 3 is abutted against the end face of the bayonet 2 and cannot rotate in the rotation direction when contacting the bayonet 2 in a unidirectional rotation manner.

As an embodiment of the present invention:

in this embodiment, threaded connection spare 3 is the screw rod, is applied to the packing and binds chain tightener A of usefulness, inserts the screw rod in the tightener A, tightener A's inside be provided with the end cap 1 that the screw rod axial was arranged, the one end of bayonet lock 2 be provided with three joint piece 21 round the circumference, the terminal surface of end cap 1 on be provided with the anti-rotating groove 6 of inserting mutually with joint piece 21, the terminal surface of screw rod on be provided with the lug 31 corresponding with joint piece 21, the terminal surface of joint piece 21 and/or lug 31 on be provided with one-way inclined plane 25, one-way inclined plane 25 produces axial force when making joint piece 21 and lug 31 contact, promotes bayonet lock 2 axial displacement to realize the one-way drive of screw rod to bayonet lock 2, can improve the probability of card income anti-rotating groove 6 through a plurality of joint piece 21.

In this embodiment, bayonet lock 2 including inserting the inserted bar 22 in end cap 1, joint piece 21 set up the one end at inserted bar 22, the elastic component be spring 4, cup joint in the outside of inserted bar 22, can provide a stable restoring force for bayonet lock 2, moreover the one end of bayonet lock 2 pass the bottom of end cap 1 and link to each other with locating part 5, locating part 5 limits the home range of bayonet lock 2, can adjust the home range of bayonet lock 2 through the position of adjusting locating part 5, locating part 5 here can be the spring catch, also can be the nut, as long as can play the part of axial limiting displacement all can.

In order to make the one-way transmission smoother, the projection 31 is a wedge-shaped projection, one side of the axial end face of the clamping block 21 is provided with a one-way inclined surface 25 matched with the projection 31, and when the screw rotates reversely, the inclined surface on the projection 31 and the one-way inclined surface 25 on the clamping block 21 interact with each other to enable the bayonet 2 to retreat easily, so that the bayonet 2 cannot be driven to rotate.

When the anti-rotation mechanism is used, one end of the screw is connected with the chain clamp, the chain clamp is connected with the chain, the other end of the screw is inserted into the small nut on the tightener A, the screw can be rotated by rotating the small nut through a tool and axially moves, the bayonet lock 2 in the anti-rotation mechanism is connected with the plug 1 through the spring 4 and the limiting piece 5, when the screw continuously rotates anticlockwise and is close to the plug 1, the end face of the screw is in contact with the bayonet lock 2, and the bayonet lock 2 gradually compresses the spring 4 to enter the hole of the plug 1; when the screw rod continues to rotate anticlockwise, the clamping pin 2 can be popped up by the spring 4, the clamping block 21 enters the groove between the convex blocks 31, meanwhile, the clamping block 21 is clamped into the anti-rotation groove 6 on the plug 1, and the screw rod cannot continue to rotate anticlockwise.

In a similar way, when the screw rod rotates and is far away from the plug, namely, when the screw rod rotates clockwise, the end face of the bayonet lock 2 can be separated from the groove of the end face of the screw rod, the end face of the bayonet lock is opposite to the groove of the threaded connecting piece in position, the principle is the same, and the bayonet lock 2 recovers the original position under the action of the spring 4.

As another embodiment of the invention, a plurality of unidirectional convex blocks with inclined planes are arranged on the end surface of the bayonet 2 around the circumference, a unidirectional groove matched with the shape of the convex blocks is arranged on the end surface of the screw, and the screw can drive the bayonet 2 to rotate in a unidirectional way by inlaying the unidirectional convex blocks and the unidirectional groove.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.