CN220883949U - Snow antiskid chain locking structure - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of mechanical locking and discloses a snow antiskid chain locking structure. It comprises the following steps: the lock catch shell is provided with a central shaft and a cable outlet; the rotating teeth are sleeved on the central shaft and can rotate around the central shaft; a cable is wound on the rotating teeth, one end of the cable is fixed on the rotating teeth, and the other end of the cable passes through the cable outlet and penetrates out of the self-locking buckle shell; the hasp is fixedly connected with one end of the mooring rope self-locking buckle shell, which penetrates out; the limiting mechanism is connected with the rotating teeth and is configured to: controlling the rotating teeth to move up and down along the axial direction of the central shaft; wherein, one surface of the rotary teeth is provided with a first plane ratchet, and the inner surface of the lock catch shell is provided with a second plane ratchet matched with the first plane ratchet; in the locked state, the first planar ratchet is engaged with the second planar ratchet.

Description

Snow antiskid chain locking structure

Technical Field

The utility model relates to the technical field of mechanical locking, in particular to a snow antiskid chain locking structure.

Background

Snow chains are structures that are mounted on tires to promote grip during snowy and rainy weather. The snow chain is usually required to be used in combination with a corresponding locking structure to tighten the chain to accommodate tires of different sizes. However, the existing buckle device is inconvenient to install, and the tightness self-adjustment of the anti-skid chains cannot be realized.

Some of the existing improved snap devices have a self-adjusting function, but they do not provide sufficient load-bearing capacity and are prone to loosening and the like. Still other snap devices have a relatively high spring rate during the recovery process, and a relatively high recovery rate tends to risk injury to the user's hands.

Therefore, there is an urgent need to provide a suitable snow tire chain locking structure to effectively avoid the problems and drawbacks of the existing locking devices.

Disclosure of utility model

The snow antiskid chain locking structure provided by the application can overcome the defects of the existing locking device.

In a first aspect, the present utility model provides a snow tire chain locking structure. It comprises the following steps: a latch housing; the lock catch shell is provided with a central shaft and a cable outlet; rotating teeth; the rotating teeth are sleeved on the central shaft and can rotate around the central shaft; a cable; the mooring rope is wound on the rotating teeth, one end of the mooring rope is fixed on the rotating teeth, and the other end of the mooring rope passes through the mooring rope outlet and penetrates out of the lock catch shell; a hasp; the hasp is fixedly connected with one end of the mooring rope penetrating out of the lock catch shell; a limiting mechanism; the limiting mechanism is connected with the rotating teeth and is configured to: controlling the rotating teeth to move up and down along the axial direction of the central shaft; wherein, one surface of the rotating teeth is provided with a first plane ratchet, and the inner surface of the lock catch shell is provided with a second plane ratchet matched with the first plane ratchet; in the locked state, the first planar ratchet engages with the second planar ratchet.

In some embodiments, further comprising: damping means; wherein the damping device is disposed between the rotating tooth and the lock housing, configured to: damping is provided to prevent rotation of the rotor in the recovery direction.

In some embodiments, the damping device comprises: the first fluted disc is arranged in the accommodating groove of the lock catch shell and can rotate around the central shaft; damping oil is injected between the first fluted disc and the lock catch shell; a second toothed disc; the second fluted disc is arranged on one surface of the rotating teeth and is opposite to the first fluted disc; the first fluted disc is meshed with the second fluted disc, and damping oil is used for providing damping for preventing the rotary teeth from rotating along the recovery direction.

In some embodiments, the spacing mechanism comprises: a first button; at least one part of the first button is exposed outside the lock catch shell and can move back and forth along a first direction relative to the lock catch shell; a linkage assembly; one side of the linkage assembly is connected with the first button, and the other side of the linkage assembly is connected with the rotating teeth; when the first button moves towards the direction of the rotating teeth, the linkage assembly drives the rotating teeth to move along the direction away from the second plane ratchets.

In some embodiments, the spacing mechanism further comprises: a second button; at least one part of the second button is exposed outside the lock catch shell and can reciprocate along a second direction relative to the lock catch shell; wherein the first button is provided with a first hook-like member; the second button is provided with a second hook-like member; the first hook member and the second hook member cooperate to limit rebound of the first button when the first button moves in a direction in which the turning teeth approach; and releasing the first button when the second button moves in a direction in which the turning gear approaches.

In some embodiments, further comprising: a spring member; wherein the spring member is disposed between the rotary tooth and the latch housing such that the rotary tooth moves in a direction approaching the second planar ratchet when the first button is released.

In some embodiments, the linkage assembly comprises: a first movable member; the first movable part is provided with a first joint part, a second joint part and a first rotating shaft, wherein the first joint part, the second joint part and the first rotating shaft are matched with the first button; a second movable member; the second movable part is arc-shaped and is provided with a protruding part and a second rotating shaft, wherein the protruding part extends outwards from the arc shape; a pair of abutment members; the abutting part is arranged between the tail end of the arc-shaped second movable part and the rotating teeth; a spring member; the spring member is disposed between the second movable member and the first button such that the first button has a tendency to rebound; when the first button moves towards the direction of approaching the rotating teeth, the first movable part is driven to rotate by the first joint part; the first rotating movable part drives the protruding part through the second joint part so as to enable the second movable part to correspondingly rotate; the rotating second movable member presses the turning teeth through the pair of abutment members to move the turning teeth in a direction away from the second planar ratchet.

In some embodiments, the latch housing includes an upper housing and a lower housing; wherein the second planar ratchet is provided on an inner surface of the upper housing.

At least one advantageous aspect of the snow tire chain locking structure provided by the embodiment of the utility model is that: by means of the plane ratchet meshing and locking mode, higher bearing capacity can be provided, and therefore the plane ratchet meshing and locking device is effectively applied to occasions such as trucks and provides higher installation reliability.

Another advantageous aspect of the snow tire chain locking structure provided by the embodiment of the utility model is that: by arranging the additional damping device, additional resistance can be provided in the rotating and recycling process of the rotating teeth, and the recycling speed of the cable is reduced, so that the cable is prevented from being suddenly recycled to cause injury to the hands of a user.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to scale, unless expressly stated otherwise.

FIG. 1 is a schematic view of a snow tire chain locking structure according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a snow slide chain locking mechanism according to an embodiment of the present utility model;

FIG. 3 is a schematic partial cross-sectional view of a snow tire chain locking structure of an embodiment of the present utility model, showing the construction of a damping device;

FIG. 4 is an exploded view of a damping device according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a limiting mechanism according to an embodiment of the present utility model;

Fig. 6 is a schematic structural view of a limiting mechanism according to an embodiment of the present utility model, showing a situation in another view angle direction;

FIG. 7 is a cross-sectional view of a snow tire chain locking structure of an embodiment of the present utility model;

FIG. 8 is a schematic illustration of the manner in which the cables of an embodiment of the present utility model are secured to the rotary teeth and the buckle, respectively;

FIG. 9 is an exploded view of a snow slide chain locking structure according to an embodiment of the present utility model;

Fig. 10 is a schematic view of a cable wrapped around a rotating tooth according to an embodiment of the present utility model.

Detailed Description

The utility model will now be described in detail with reference to specific embodiments, it being emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the utility model or its applications.

It is noted that unless explicitly specified and limited otherwise, the terms "center", "longitudinal", "transverse", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., used in this specification are directional or positional relationships indicated based on the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated; thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; the meaning of "plurality" is two or more; "and/or" includes any and all combinations of one or more of the associated listed items. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 is a schematic view of a snow chain locking structure according to an embodiment of the present utility model. Fig. 2 is an exploded view of a snow chain locking structure according to an embodiment of the present utility model. As shown in fig. 1 and 2, the snow slide chain locking structure includes: the lock catch housing 10, the rotating teeth 20, the cable 30, the hasp 40, the limiting mechanism 50 and the damping device 60.

Wherein the shackle housing 10 may be provided with a central shaft 101 and a cable outlet 102. Specifically, the latch casing 10 may be composed of an upper casing 11 and a lower casing 12, where the upper casing 11 and the lower casing 12 are fixedly connected through a plurality of fixing rivets to form a specific accommodating space. Of course, an integrally formed or other suitable structural design may be employed, and will not be described in detail herein.

The rotary teeth 20 are sleeved on the central shaft 101, and can rotate around the central shaft 101 and move up and down along the axial direction of the central shaft 101. The rotor teeth 20 may have an axial length for the recovered cable 30 to be wound. One end of the cable 30 is fixed to the rotor tooth 20, and the other end can be threaded out of the buckle housing 10 through the cable outlet 102 and fixedly connected with the buckle 40.

Specifically, as shown in fig. 8, one end of the cable 30 is formed with a head 31 by casting metal after passing through the through hole of the rotating tooth 20, so as to ensure that the cable 30 can be reliably fixed and is not easily pulled off. In addition, the other end of the cable 30 may also be provided with an enlarged hemispherical head 32. The snap 40 is provided with a recess adapted to the head 32, which cooperate to allow 360 degree rotation of the handle and secure attachment, without being pulled apart.

Specifically, one of the surfaces of the rotary teeth 20 is provided with a first plane ratchet 21. Accordingly, as shown in fig. 3, the inner surface of the latch housing (e.g., the inner surface of the first housing) is provided with second planar ratchet 22 that mates with the first planar ratchet.

In the locked state, the rotating teeth 20 and the first housing 11 approach each other, and the first plane ratchet 21 and the second plane ratchet 22 are engaged, thereby providing a high bearing force. In the opened state, the rotating teeth 20 are away from the first housing 11, and the first plane ratchet 21 and the second plane ratchet 22 are separated from each other, so that the pull-out of the cable is facilitated.

In some embodiments, a spring member 23 is also included. The spring member 23 is provided between the rotary tooth 20 and the lower housing 12, and provides an elastic force to cause the rotary tooth 20 to have a tendency to approach toward the upper housing 11.

The limiting member 50 is connected to the rotary tooth 20. Which is a control trigger component configured to: the control turning gear 20 moves up and down in the axial direction of the center shaft 101, thereby achieving switching between the locked state and the unlocked state.

The damping device 60 is arranged between the rotor tooth 20 and the lock housing 10. Which can provide damping against rotation of the rotor teeth 20 in the retrieval direction as the cable is automatically retrieved, achieving the effect of reducing the rate of cable retrieval. The specific damping size can be set according to the actual situation, and will not be described here.

Fig. 3 and 4 are schematic structural views of a damping device according to an embodiment of the present utility model. As shown in fig. 3, the damping device 60 includes: a first toothed disc 61 and a second toothed disc 62.

Wherein the first fluted disc 61 is disposed in a recess of the latch housing. Damping oil R is injected between the first fluted disc 61 and the lock housing, so that the first fluted disc is damped in rotation. The second toothed disc 62 is disposed on one of the surfaces of the rotating teeth opposite to the first toothed disc 61.

When the opposite tooth structures of the first tooth plate 61 and the second tooth plate 62 are meshed with each other, the first tooth plate 61 provides damping for preventing the rotary teeth 20 from rotating in the recovery direction due to the damping oil, thereby reducing the recovery speed of the cable.

In particular, the damping device also comprises a pair of annular rings 63. The annular ring 63 may be secured to the upper housing 11 by ultrasonic welding to form an integral part. The first tooth plate 61 is locked in the groove of the upper shell, and the tooth-shaped structure of the first tooth plate 61 can be meshed with the second tooth plate 62.

In some embodiments, as shown in fig. 2, 5 and 6, the limiting mechanism 50 includes: a first button 51, a linkage assembly 52, and a second button 53.

At least a portion of the first button 51 is exposed outside the latch housing and is reciprocally movable in a first direction relative to the latch housing. At least a portion of the second button 53 is also exposed outside the latch housing and is reciprocally movable in a second direction relative to the latch housing.

One side of the linkage assembly 52 is connected to the first button 51 and the other side is connected to the rotary tooth 20. Therefore, when the first button 51 moves toward the rotating tooth 20, the linkage assembly 52 drives the rotating tooth 20 to move along the direction away from the second plane ratchet, so that the snow chain locking structure enters the open state, and the cable can be pulled out smoothly.

In addition, as shown in fig. 5 and 6, the first button 51 is provided with a first hook 511, and the second button 53 is provided with a second hook 531. The first hook 511 and the second hook 531 cooperate with each other to limit the rebound of the first button 51 when the first button 51 moves in the direction in which the rotary tooth 20 approaches; and releases the first button 51 when the second button 53 moves in the direction in which the turning teeth approach.

Specifically, linkage assembly 52 includes: the first movable member 521, the second movable member 522, and the pair of abutment members 523 and the spring member 524.

The first movable member 521 has a first engaging portion 521a, a second engaging portion 521b, and a first rotation shaft 521c that are engaged with the first button.

The second movable member 522 has an arc shape with a protrusion 522a extending outward from the arc shape and a second rotation shaft 522b. The abutment member 523 is provided between the end of the arcuate second movable member and the turning gear.

A spring member 524 is disposed between the second movable member 522 and the first button to provide the first button with a tendency to rebound.

Thus, when the first button 51 moves in the direction in which the turning gear 20 approaches, the first movable member is rotated about the first rotation shaft 521c by the first engagement portion 521 a. The first movable member 521, which is then rotated, rotates about the second rotation axis 522b by the interaction between the second engagement portion 521b and the protrusion 522 b. Finally, the rotating second movable member 523 will press the rotary tooth 20 via the abutment member 523 to move the rotary tooth 20 in a direction away from the second planar ratchet.

In some embodiments, as shown in fig. 7, the first planar ratchet 21 and the second planar ratchet 22 on the first housing 11 may be provided with a chamfer angle a inclined with respect to the vertical direction. The angle a may be an angle value between 17-22 °. By setting the angle, on the one hand, tight engagement between the first planar ratchet 21 and the second planar ratchet 22 can be ensured, and release is not easy. On the other hand, the disengagement between the first housing 11 and the rotary tooth 20 can be easily achieved. In some embodiments, as shown in fig. 9, a clamping groove 80 may also be provided on the rotor tooth 20. The clamping groove can play a role in positioning the cable. In the actual use process, two loops of cables are accommodated in the clamping groove, and the cables are guided to be wound on the surface of the rotating teeth 20 in a circle-by-circle mode, so that the cables are prevented from being undesirably stacked and wound in the rotating and recovering process of the rotating teeth 20. I.e. as shown in fig. 10, the second loop of cable does not press against the surface of the previously wound first loop of cable.

In order to fully describe the inventive concept of the embodiments of the present utility model, a detailed description will be given below of a specific use process of the above snow tire chain locking structure.

The snow chains may be secured to the latch housing 10 and the buckle 40, respectively. Thus, by releasing and recovering the cable 30, the whole length of the antiskid chain can be adjusted, and the antiskid chain is convenient to adapt to different use scenes.

One end of the cable 30 is fixed to the rotating tooth 20 and the other end is fixedly connected to the buckle 40 through the cable outlet 13. Thus, with rotation of the rotor tooth 20 in the releasing direction or the retracting direction, the cable 30 can be released or retracted from the latch housing 10 accordingly (the retracted cable 30 is wound around the rotor tooth 20), enabling adjustment of its length.

In addition, the rotor teeth 20 are provided with additional elastic members 70. The elastic member 70 may store elastic potential energy of the rotary tooth 20 when rotated in the releasing direction, which provides an elastic force to make the rotary tooth 20 have a characteristic of automatically rotating in the withdrawing direction.

In the locked state after the length adjustment is completed, on the one hand, the first planar ratchet 21 and the second planar ratchet 22 are engaged with each other, so that an acting force for limiting the rotation of the turning gear 20 in the releasing direction is provided, and the situation that the length of the anti-skid chain is prolonged and the anti-skid chain is loosened is avoided.

On the other hand, the second toothed disc 62 is also intermeshed with the toothed structure of the first toothed disc 61 at this time. Because of the damping of the first toothed disc 61 against rotation, rotation of the rotor teeth 20 in the retrieving direction is correspondingly resisted, such that the cable is retrieved at a lower rate, thereby avoiding injury to the user's hands.

The first button 51 may be pressed when it is desired to pull out the cable. With the inward depression of the first button 51, the first and second movable members 521 and 522 rotate accordingly, so that the rotary teeth 20 are pressed by the abutment member 523 to move in a direction away from the upper case, thereby releasing the first and second planar ratchets and the interengagement between the second toothed disc and the first toothed disc. Thereby, the rotation of the rotating teeth 20 is not affected any more and the cable can be pulled out smoothly.

In addition, as shown in fig. 9, after the rotating teeth 20 move in a direction away from the upper case, the tooth-shaped structure of the bottom thereof is engaged with the spring piece 70. The engaged spring piece 70 can play a role in positioning the rotating teeth 20, and prevent the rotating teeth 20 from rotating reversely, so that the recovery of the steel wire rope is avoided.

Also, the first hook part 511 of the first button 51 may be hooked by the second hook part 531 of the second button at this time, and the first button 51 may not be automatically reset under the restriction of the second button 53. The user does not need to press continuously.

After the cable length adjustment is completed, the second button 53 may be pressed. As the second button 53 moves, the second hook 531 on the second button is separated from the first hook 511 of the first button. At this time, the first button 51 is automatically reset by the spring member 524, and accordingly, the rotary teeth 20 are also automatically reset to the locking state in which the first planar ratchet and the second planar ratchet are engaged with each other.

The foregoing is a further detailed description of the utility model in connection with specific/preferred embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, and these are all within the scope of the utility model.

Claims (9)

1. A snow tire chain locking structure, comprising:

A latch housing; the lock catch shell is provided with a central shaft and a cable outlet;

rotating teeth; the rotating teeth are sleeved on the central shaft and can rotate around the central shaft;

A cable; the mooring rope is wound on the rotating teeth, one end of the mooring rope is fixed on the rotating teeth, and the other end of the mooring rope passes through the mooring rope outlet and penetrates out of the lock catch shell;

A hasp; the hasp is fixedly connected with one end of the mooring rope penetrating out of the lock catch shell;

A limiting mechanism; the limiting mechanism is connected with the rotating teeth and is configured to: controlling the rotating teeth to move up and down along the axial direction of the central shaft;

Wherein, one surface of the rotating teeth is provided with a first plane ratchet, and the inner surface of the lock catch shell is provided with a second plane ratchet matched with the first plane ratchet;

In the locked state, the first planar ratchet engages with the second planar ratchet.

2. The snow slide chain locking structure according to claim 1, further comprising: damping means;

Wherein the damping device is disposed between the rotating tooth and the lock housing, configured to: damping is provided to prevent rotation of the rotor in the recovery direction.

3. The snow slide chain locking structure according to claim 2, wherein the damping device includes:

The first fluted disc is arranged in the accommodating groove of the lock catch shell and can rotate around the central shaft; damping oil is injected between the first fluted disc and the lock catch shell;

A second toothed disc; the second fluted disc is arranged on one surface of the rotating teeth and is opposite to the first fluted disc;

the first fluted disc is meshed with the second fluted disc, and damping oil is used for providing damping for preventing the rotary teeth from rotating along the recovery direction.

4. The snow slide chain locking structure according to claim 1, wherein the limit mechanism includes:

a first button; at least one part of the first button is exposed outside the lock catch shell and can move back and forth along a first direction relative to the lock catch shell;

a linkage assembly; one side of the linkage assembly is connected with the first button, and the other side of the linkage assembly is connected with the rotating teeth;

When the first button moves towards the direction of the rotating teeth, the linkage assembly drives the rotating teeth to move along the direction away from the second plane ratchets.

5. The snow slide chain locking structure according to claim 4, wherein the limiting mechanism further comprises:

A second button; at least one part of the second button is exposed outside the lock catch shell and can reciprocate along a second direction relative to the lock catch shell;

wherein the first button is provided with a first hook-like member; the second button is provided with a second hook-like member;

The first hook member and the second hook member cooperate to limit rebound of the first button when the first button moves in a direction in which the turning teeth approach; and

And releasing the first button when the second button moves towards the direction of approaching the rotating teeth.

6. The snow slide fastener locking structure according to claim 5, further comprising: a spring member;

Wherein the spring member is disposed between the rotary tooth and the latch housing such that the rotary tooth moves in a direction approaching the second planar ratchet when the first button is released.

7. The snow slide chain locking structure according to claim 5, wherein said linkage assembly includes:

A first movable member; the first movable part is provided with a first joint part, a second joint part and a first rotating shaft, wherein the first joint part, the second joint part and the first rotating shaft are matched with the first button;

A second movable member; the second movable part is arc-shaped and is provided with a protruding part and a second rotating shaft, wherein the protruding part extends outwards from the arc shape;

a pair of abutment members; the abutting part is arranged between the tail end of the arc-shaped second movable part and the rotating teeth;

A spring member; the spring member is disposed between the second movable member and the first button such that the first button has a tendency to rebound;

When the first button moves towards the direction of approaching the rotating teeth, the first movable part is driven to rotate by the first joint part;

The first rotating movable part drives the protruding part through the second joint part so as to enable the second movable part to correspondingly rotate;

The rotating second movable member presses the turning teeth through the pair of abutment members to move the turning teeth in a direction away from the second planar ratchet.

8. The snow slide fastener locking structure according to claim 1, wherein the locker housing includes an upper housing and a lower housing;

wherein the second planar ratchet is provided on an inner surface of the upper housing.

9. The snow slide fastener locking structure according to claim 8, wherein the first planar ratchet and the second planar ratchet are provided with a chamfer angle inclined with respect to a vertical direction; the chamfer angle is an angle value between 17 and 22 degrees.