JPH0734730Y2 - Tightening device for anti-skid device for tire - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening device for pulling a side peripheral edge of an anti-skid device wound around a tire peripheral surface toward a tire center to bring the anti-skid device into close contact with the tire peripheral surface.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 10 for carrying out this type of tightening, a non-slip member B wound around a tire B peripheral surface.
Outer ring 101 to be hung on the inner side edge b11 and the outer ring 101
A tightening ring 100 is known in which an inner ring 102 formed on the inner side of a ring and a large number of connecting portions 103 connecting the both rings 101, 102 are integrally molded with a desired elastic material (for example, rubber material). .

This tightening ring 100 pulls the side peripheral edge b11 of the cleat B toward the center of the tire C due to the elasticity of the outer ring 101, and the outer ring 101 is connected to the inner ring 102 and each connecting portion.
Due to the elasticity of 103, the anti-slip device B can be more reliably brought into close contact with the circumferential surface of the tire C by pulling further toward the center of the tire C, as compared with the conventional ring composed only of the outer ring 101. ing.

Also, do not use the tightening ring 100 described above.
The outer edge b11 of the non-slip device B toward the center of the tire C.
A tightening device is known (see Japanese Utility Model Laid-Open No. 60-25506).
Disclosed). Such a tightening device has an outer edge of the non-slip device B.
Each fastening hook attached to b11 and the outer surface of the tire wheel
To the wire guide provided on the outer peripheral edge of the main body attached to
After straddling the crossover tightening wire,
Winding drum that can rotate freely in one direction in the center of the fixed body
The wire in one direction, that is, in the wire winding direction.
Take up the tape and tie the tightening hooks on the outside edge of the non-slip device B
By pulling (pulling) the direction toward the center of C, the non-slip device B
Is closely attached to the peripheral surface of the tire C.

[0005]

However, according to the conventional fastening means including the former fastening ring 100, the restoring force (tightening force) due to the elasticity of the outer ring 101, the inner ring 102, and the connecting portions 103, respectively. Force) is so strong that the tightening ring 100
It requires a lot of labor to attach / detach, and in addition to the fact that the installation requires work outdoors in winter, the work is extremely troublesome and it may not be possible to attach to elderly people or women. There was also

On the other hand, according to the latter tightening device, the winding drum is
By rotating the cam, each tightening hook on the outer edge b11 of the non-slip device B
Tightening wire that was laid over the wire guide on the outer peripheral edge of the main body
By winding the ear, attach the anti-skid device B to the tire C peripheral surface.
Because it is attached, it has a strong recovery like the former.
Non-slip tightening ring with strength against its restoring force
Work performed by hooking each tightening hook on the outer edge b11 of tool B
It can be installed more easily than the
When the tool B becomes unnecessary and is removed from the tire C peripheral surface,
Ratchet claw against ratchet teeth on the outer circumference of the take-up drum
Requires labor to release the bite (engagement) state of the
Unlocking work is required, so the same as the former
There is a risk that the elderly and women will not be able to remove it.
was there.

However, in the case of this latter tightening device,
Wind the tightening wire by rotating the winding drum when attaching
The drum during work and after winding the wire
Prevent it from rotating in the reverse direction (return direction)
The ratchet tooth and the
A ratchet claw that is biased by a ring
It is equipped with a ratchet mechanism
The bite on the ratchet teeth of the claw is in the spring
In addition to the elastic force due to
Tension force (anti-slip device pulled toward the center of tire C)
B The tightening force of the outer edge) is applied to cut in with a large force.
Therefore, a considerable amount of force is required to remove that bite.
Is what you need.

The present invention has been made in view of the above conventional circumstances, and its object is to provide a tire peripheral surface.
Not only is the anti-slip device wound around the
However, it is easier than conventional products and can be performed with one-touch operation.
Another object of the present invention is to provide a tightening device for an anti- skid device for a tire, which has improved detachability .

[0009]

In order to achieve the above-mentioned object, a tightening device for a tire anti-skid device according to the present invention comprises:
An outer ring made of a stretchable material is laid along the outer peripheral edge of the anti-skid device wound around the tire peripheral surface, and a plurality of outer rings are provided inside the outer ring at appropriate intervals along the inner periphery of the outer ring. It is equipped with an inner ring formed by straddling a string material that can be inserted through each insertion hole, and a tightening operation part for relaxing / tensioning the inner ring to expand / reduce its diameter. In the housing
It is common to deploy a take-up disc on one side separated by a partition wall.
On the other hand, the other is provided with a rotating body that is freely rotatable in one direction and can be released in the other direction.
The center of rotation can be engaged and connected in the direction of rotation, and slides in the direction of axis
Insert the shaft that can be freely inserted through and insert one end
The through hole opened in the center of the partition of the housing is loosely inserted and the winding is performed.
It is made to project toward the take-up disc side, and the partition wall and take-up device are
An internal gear that is rotatably and slidably mounted on the shaft between the disk
, The gear groove formed on the inner circumference of the housing, and the winding disk.
Is rotatably attached to a boss protruding from
A planetary gear consisting of a plurality of outer gears meshingly linked with the gear groove.
A mechanism is provided, and one of the shaft bodies protruding from the inner gear
The end part is loosely fitted into the hole opened at the center of rotation of the winding disk.
A saucer part for
Rotate by setting up a gear part that engages with the gear in a disengageable manner.
If a seat is fitted on the other end of the coaxial body protruding from the body,
Both of the seats are equipped with springs that urge the shaft in the protruding direction.
And the gear portion of the saucer portion is meshed with the inner gear.
Te becomes, allowed secured to both end portions of the inner ring to said winding disk, reducing the diameter of the inner ring with the allowed to take-up tension of the inner ring rotated the take-preparative disk rotating operation of the rotating body in the disk The gist is to at least pull the outer ring toward the center of the tire.

Further, the gist is that the winding disk in the tightening operation portion is formed in a large diameter shape having substantially the same diameter as the inner portion surrounded by the inner ring.

[0011]

Therefore, according to the tightening device of the present invention as set forth in claim 1, the outer edge of the non-slip member wound around the tire peripheral surface.
After straddling the outer ring along with, rotate the rotating body of the tightening operation unit.
Turn it over and insert the string material through each insertion hole of the outer ring in order.
A winding disk that secures both ends of the inner ring in a relaxed state.
Wind it up At this time, the take-up disc is integrated with the rotating body.
A rotating shaft body and the gear part of this shaft body mesh with each other by a spring
Rotation by connecting the inner gear and outer gear of the planetary gear mechanism
Rotate the inner ring by rotating it in the same direction as the body,
Immediately tighten the tension and reduce its inner diameter.
Then, by tightening the inner ring, pull the outer ring toward the tire center.
It Then, a strong restoring force (tightening
Force pulls the outer peripheral edge of the anti-skid toward the tire center
Firmly adhere the anti-skid device to the tire surface.

[0012] Then, when the slip stopper becomes unnecessary and is removed
In this case, push the shaft against the spring and slide it in the axial direction.
Of the gear part of the coaxial body with the inner gear of the planetary gear mechanism
By releasing the state, the winding disc
It is also free for the direction, so that the take-up disc
The tension of the wound inner ring due to the resilience of the outer ring
Therefore, the inner ring rotates in the pulling direction, and the inner ring is relaxed.
The diameter is expanded. Therefore, the tire center direction of the outer ring
Is removed from the outer peripheral edge of the anti-skid device.
It will be in the state to be.

According to a second aspect of the present invention, by forming the winding disk in a large diameter shape having substantially the same diameter as the inner portion surrounded by the inner ring, the disk rotation for loosening / tensioning the inner ring. The stroke is smaller and the work is easier.

[0014]

[Examples] Examples of a tightening device for a tire anti-skid device according to the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of a tightening device according to claim 1, wherein the tightening device A is an outer ring which is hung on the inner circumference of a side peripheral edge of a slip stopper B wound around a tire C peripheral surface. 1, an inner ring 2 to be hung on the inner circumference of the outer ring 1, and a tightening operation part 3 for loosening / tensioning the inner ring 2, and the tightening operation part 3
The diameter of the inner ring 2 is reduced and the outer ring 1 is pulled toward the center of the tire C by rotating the disk 5 to be disposed on the outer ring 1.

Although the slip stopper B will not be described in detail, the left and right side peripheral edges of the net body b1 wound around the tire C peripheral surface will be described.
A conventionally known net-type non-slip device in which hooking hooks b2 are attached to b11 at appropriate intervals, and the butt ends b12, b12 of the net body b1 are tightened with connecting hooks b3 and the tire back In addition to hanging a rubber-made hooking ring on each of the hooks b2, b2 ... Of the side peripheral edge b11 in
The tightening device A is attached to each of the hooks b2, b2 ... Of the side edge b11 on the front side of the tire, and is tightly attached to the circumferential surface of the tire C.

The anti-slip device B is not limited to the net type described above, but may be of another type such as a ladder type.

The outer ring 1 of the tightening device A can be made of synthetic rubber or any other desired elastic material to be stretched around the respective hooks b2, b2, ... It is shaped like a ring. The appropriate tension state here means that the attachment / removal work by an elderly person or a woman is easy, and the anti-skid device B can be stretched toward the center of the tire C.

The outer ring 1 has left and right branch rods 11 extending from the inner peripheral edge thereof toward the center, and both branch rods 11, 11.
Trapezoidal connecting part consisting of a horizontal rod 12 connected between the tips of the
A plurality of 1a are integrally formed at equal intervals in the circumferential direction of the outer ring 1, a tightening operation part 3 is arranged on any connecting part 1a, and a hook 4 is left on all remaining connecting parts 1a. Lock in the right side by side.

One end of each hook 4 is fixed to the horizontal rod 12 by crimping and extends toward the center of the outer ring 1, and the other end is curved in a substantially U shape so that the cord 2'is inserted. The holes 4a are formed, whereby a plurality of insertion holes 4a are opened inside the outer ring 1 at appropriate intervals in the circumferential direction.

The cord 2'is made of a material having a predetermined tensile strength (for example, nylon) and formed into a cord having an arbitrary cross-sectional shape that can smoothly slide in the insertion hole 4a. An inner ring 2 that is laid over the inner side of the outer ring 1 is formed by being inserted into the insertion hole 4a and by fixing both ends 2a, 2a thereof to the winding disk 5 provided in the tightening operation section 3.

The tightening operation portion 3 hooks a seat plate 32 extending toward the center of the outer ring 1 to an arbitrary connecting portion 1a of the outer ring 1.
The housing 33 is fixed on the seat plate 32 by mounting the housing 33 on the inside of the outer ring 1 by attaching the housing 33.
The winding disk 5 is placed on one side which is partitioned by the partition wall 33a of
In addition, the other can rotate freely in one direction
Deploy the rotating body 35 that is regulated to be able to release the rotation.
An operation lid 34 is rotatably attached to the upper surface opening of the. That
A hexagonal hole 35a at the center of rotation of the rotating body 35.
The hexagonal hole 35a of the
Insert the shaft body 36 that can be freed into a penetrating shape and
Through hole 33a 'opened in the center of partition 33a of housing 33
Loosely inserted and projected toward the winding disk 5 side
At the same time, there is a planet between the partition wall 33a and the winding disk 5.
The gear mechanism 6 is provided to rotate the rotating body 35 to the shaft body 36,
A planetary gear meshingly connected to a gear portion 36b of the shaft body 36 described later.
Structure for integrally transmitting to the take-up disc 5 via the yarn mechanism 6
There (refer to FIG. 2).

The housing 33 is a bottomed cylinder whose top surface is open.
It is formed in a circular shape, and on the back surface of its bottom part, a disk shape of approximately the same size
The formed substrate 32 is fixedly attached, and the upper chamber 33b and the lower chamber are provided inside.
Partition wall 33a that is divided into 33c is integrated, and it is rotated in the upper chamber 33b.
The body 35 and the take-up disc 5 are arranged in the lower chamber 33c,
Do not close the top opening to the operation lid 34 that is rotatably attached.
It Further, on the inner circumference of the upper chamber 33b, engagement receiving pieces 37 composed of a tapered surface 37a inclined at an appropriate angle with respect to the outer circumference of the rotating body 35 and a lock receiving surface 37b orthogonal to the outer circumference are equally spaced. A plurality of protrusions are provided for each (see FIG. 3), and a gear groove 61 of the planetary gear mechanism 6 described later is formed on the inner circumference of the lower chamber 33c. Further, a through hole 33a 'is opened at the center of the partition wall 33a, and the shaft body 36 is inserted into the through hole 33a' so as to be rotatable and slidable up and down.

The take-up disc 5 has a housing of an appropriate thickness.
It is shaped like a disc that fits freely in the lower chamber 33c of the gear 33.
A concave groove 51 for winding the cord 2 is formed on the outer peripheral end surface of the groove over the entire length in the circumferential direction. In this embodiment, the cord 2 is formed in a band shape so that the cord 2 can be wound up while being properly overlapped in the groove 51, and the groove 51 has a width slightly larger than that of the cord 2. And, it is recessed at an appropriate depth. An opening 33a 'for loosely fitting a receiving portion 36a of the shaft 36, which will be described later, is provided at the center of rotation, and a plurality of planetary gear mechanisms 6 to be described later are provided on the upper surface centered on the opening 33a'. A boss 53 is provided so as to project the outer gear 6b.

The rotating body 35 has an appropriate thickness and is of the housing 33.
Within the upper chamber 33b, it can be rotatably accommodated in the upper chamber 33b.
It is formed in a disk shape that is slightly smaller than the circumference, and its outer circumference
A concave portion 35c is provided at an appropriate place, and the concave portion 35c is
Equipped with an engagement piece 38 that engages with the engagement receiving piece 37 on the inner periphery of the chamber 33b
The locking piece 39, which is freely retractable, and the locking piece 39
It is biased toward the engagement receiving piece 37 by the elastic material 39a (see Fig. 3).
See). Thus, the rotating body 35 is urged by the elastic material 39a on its outer periphery.
The engagement receiving piece 37 on the inner periphery of the upper chamber 33b of the retained engagement piece 38
Due to the engagement and disengagement with respect to the
The rotation of the cord 5 in the string winding direction (clockwise in Fig. 3)
It becomes free, and the other direction, that is, the wound string material 2 is rolled up.
The winding-out direction of the take-up disk 5 to be taken out
Edge rotation is regulated. Also, in FIG.
As shown, the engaging concave portion 35b is formed in the rotary member 35 and the engaging receiving piece 38.
The operation lid 34 is provided in each of the engaging recesses 35b.
Insert and engage the engaging rods 34a that are hung respectively on the lower surface.
By doing so, the rotation operation of the operation lid 34 is integrally transmitted to the rotating body 35.
The rotating body 35 is rotated.

The shaft body 36 has a rotating body 35 at an axially intermediate portion thereof.
The central hexagonal hole 35a can be freely engaged and connected in the rotational direction.
Hexagonal locking part 36c slidably engaged in the axial direction of
Is formed, rotates integrally with the rotating body 35, and is unique
Is designed to slide in the axial direction through the rotating body 35.
ing. An opening 52 at the center of the winding disk 5 is provided at the lower end of the shaft 36.
A saucer portion 36a that is loosely fitted is provided, a gear portion 36b is erected along the outer peripheral edge of the saucer portion 36a, and the upper end thereof has a receiver
A seat 36d is fitted and a spring is provided between the seat 36d and the rotary plate 35.
By loading 36e, it projects from the hexagonal hole 35a of the rotating body 35.
It is constantly urged in its protruding direction, which allows the planetary gear to
The inner gear 6a of the mechanism 6 and the gear portion 36b are constantly meshed and connected.
So that the rotation from the rotating body 35 is transmitted to the internal gear 6a.
There is. The engagement and connection state is set at the center of the operation lid 34.
The upper end of the shaft 36 located immediately below the beam opening 34b is
From outside the resin cover 34d that covers the spring 36e.
Then push the shaft 34 in the direction of the arrow from directly above as shown in FIG.
Performing a push operation that causes the
The yarn 6a is in a state where it can rotate freely.

The planetary gear mechanism 6 includes a gear portion along the outer peripheral edge.
On the lower end side of the shaft body 36 having the saucer part 36a provided with 36b,
Positional relationship in which the gear part 36b of the saucer part 36a meshes in a freely disengageable manner
In addition to deploying the internal gear 6a so that it can rotate and slide freely,
Gear groove 61 formed on the inner periphery of the lower chamber 33c of the gear 33 and the inner gear 6a
Between the bosses 53 on the upper surface of the winding disk 33
With the shaft attached, the outer guide should be installed at regular intervals in the rotation direction of the disc 33.
It is transmitted from the rotating body 35 to the shaft body 36 with the ya 6b deployed.
An internal gear 6a that meshes and connects the rotation with the gear portion 36b of the coaxial body 36,
It is configured to transmit to the winding disk 5 via the respective outer gears 6b meshingly connected to the inner gear 6a so that the winding disk 5 rotates integrally with the rotating body 35 as the operation lid 34 rotates. (See FIG. 4).

According to the above construction, in the normal state (state of FIG. 2), the lower end gear portion 36b of the shaft body 36 and the inner gear 6a of the planetary gear train 6 are in mesh with each other by the spring 36e. By rotating the operation lid 34 in the clockwise direction in this state, the rotary plate 35, the shaft body 36, and the inner gear 6a rotate together, and the outer gear 6b rotates together, so that the winding disk 5 moves. Rotate in the same direction. When the winding disk 5 rotates, the inner ring 2 for fixing the both ends 2a, 2a to the disk 5 is wound into the concave groove 51 and gradually tensioned, whereby the diameter of the inner ring 2 is reduced. The outer ring 1 is pulled toward the center of the tire C, and a strong restoring force (tightening force) due to shrinkage acts on the outer ring 1 to firmly attach the slip stopper B to the circumferential surface of the tire C.

Even if the hand for rotating the operation lid 34 is released while the inner ring 2 is wound up and tensioned , the engagement surface 38 of the engagement piece 38 is released.
The rotation of the disc 5 in the counterclockwise direction is restricted when b comes into contact with and engages with the engagement receiving surface 37b of the engagement receiving piece 37,
By preventing the string 2 ′ that has been wound up from returning and maintaining the inner ring 2 in a tensioned state, that is, the state in which the anti-skid device B is brought into close contact with the circumferential surface of the tire C, and the attached condition of the anti-skid device B is ensured. Close.

When the anti- slip device is unnecessary and can be removed
If the cover is covered with a resin cover 34d in the center of the operation lid 34,
A spring is attached to the upper end of the shaft body 36 located immediately below it through the hole 34b.
Push the shaft 36 in the direction of the arrow shown in FIG.
One-touch operation (slide to slide in the axial direction)
The inner gear 6a of the planetary gear mechanism 6 by
The meshing state of the gear 36b at the lower end of the shaft 36 is automatically
Is released (state of FIG. 5) . As a result, the inner gear 6a
It is in a state where it can rotate freely. That is, the internal gear 6a and the external gear
The winding disk 5 meshingly connected via the yarn 6b
Since it is also free in the rolling direction, the take-up disc
5 is the inner ring 2 which is wound due to the resilience of the outer ring 1
When the inner ring 2 is rotated, it rotates in the direction in which the inner ring 2 is pulled.
Is relaxed and its diameter is expanded. Therefore, the outer ring 1
The pulling force toward the center of Ear C is released and the outer ring 1 is
The state of being easily removed from the outer peripheral edge b11 of the body b1
And easily remove the net body b1 from the tire C circumference
You can

Therefore, according to the tightening device A of the present invention,
The net body b1 wound around the tire C circumference is firmly attached to the circumference.
Needless to say, it is unnecessary in the work of attaching it to the
When removing the shaft 36e
To push the shaft 36 to slide in the axial direction.
It is wound on the winding disk 5 by one-touch operation.
The inner ring 2 is pulled by the resilience of the outer ring 1 and the winding disk
The diameter of the inner ring 2 relaxes as it is automatically fed out from
The outer ring 1 can be easily expanded from the outer peripheral edge b11 of the net body b1.
Since it is ready to be removed,
Can be performed more easily than conventional products,
The detachability can be further improved .

The operation lid 34 may be rotated by hand as described above, but as shown in the figure, the operation lid 34 is provided with a mounting hole 34c which is engaged with the mounting hole 34c. Boss 71
It is also possible to detachably attach the rotation operation tool 7 provided with the above, and to rotate it, or, although not shown, provide a folding and retractable operation rod on the upper surface of the operation lid 34 for operation.

7 and 8 show a partial modification of the above-described embodiment, more specifically, a horizontal rod 12 'of the connecting portion 1a provided on the outer ring 1.
Is made wide and thick, and the horizontal rod 12 'is provided with an insertion hole 4a' along the longitudinal direction, and both ends 2a, 2a of the string material 2'inserted into each insertion hole 4a 'are tightened by an operation portion. An inner ring 2 which is hung on the inner side of the outer ring 1 is formed by being fixed to the winding disk 5 arranged on the outer ring 3. The insertion hole 4a 'has a cross-sectional shape that allows the cord 2'to slide smoothly.

Further, in this embodiment, since the insertion hole 4a 'becomes a rubber hole, there is a possibility that smooth sliding of the cord 2'is hindered, but in order to prevent this, the insertion hole 4a' is provided in the insertion hole 4a '. A metal or resin pipe 8 is fitted and attached. Further, by fitting and inserting a resin ring or the like into the insertion hole 4a in the above-mentioned embodiment,
It is also possible to achieve smoother sliding of the string material 2 '.
Since the constituent parts other than the above are the same as those in the above-described embodiment, the same reference numerals are used for the same constituent parts and the description thereof will be omitted.

In this embodiment, since the insertion hole 4a 'is formed integrally with the outer ring 1, it is not necessary to use a dedicated part for forming the insertion hole, and the number of parts is reduced accordingly, and tightening is performed. There is an effect that the labor and cost required for manufacturing the device A can be reduced.

FIG. 9 shows an embodiment of the tightening device according to claim 2. In this embodiment, the entire tightening operation portion 3 in the above-described embodiment is formed in a large diameter shape having substantially the same diameter as the portion surrounded by the inner ring 2 to form the tightening operation portion 3 '.

Further, the winding disk 5 ', the operation lid 34', etc. in the tightening operation portion 3'have a large diameter, and the winding / rewinding stroke of the cord 2 ', that is, the operation lid 34' / winding disk 5 '. It has the effect of reducing the rotation stroke of the 'and its resistance and simplifying the work of attachment / detachment.

Since the inside of the tightening operation portion 3'is the same as the configuration shown in FIG. 2 and the components other than the above are the same as those of the embodiment according to FIG. The description is omitted by using the same reference numerals. Also in this embodiment, it is optional whether the operation lid 34 'is rotated by hand or by the above-mentioned rotation operation tool and operation rod.

The connecting portion 1a provided on the outer ring 1 is not limited to the structure described in each of the above-described embodiments. For example, although not shown, left and right extending from the inner peripheral edge of the outer ring toward the center direction. It is also possible to form the inverted triangular shape by joining the ends of the branch rods of the above, and to form an insertion hole in the convex piece that extends from the joined part (the apex of the triangle) toward the center of the outer ring. Is.

[0040]

[Effects of the Invention] Since the tightening device for the anti-skid device of the present invention is constructed as described above, it has the following operational effects. ． When installing a non-slip device wound around the tire surface
After straddling the outer ring along the outer edge of the non-slip device, tighten
Rotate the rotary part of the work part and insert it sequentially into each insertion hole of the outer ring.
Secure the inner ring in a loosened state by fixing it at both ends.
Wind it on the take-up disc and gradually tension the inner ring.
The outer ring is toward the center of the tire as the diameter is reduced.
Direction, and the outer ring has a strong restoring force (constriction)
Force acts to pull the outer peripheral edge of the anti-skid toward the tire center.
It is possible to firmly adhere the anti-slip device to the tire peripheral surface.
Easy to install, even for elderly people and women
Can be killed. ． And when the anti-slip device is no longer needed, when removing it, the shaft
Push the body against the spring and slide it in the axial direction
Release the meshing condition of the gear part of the
By removing the take-up disc,
However, the take-up disc will be
Due to the resilience, the wound inner ring will be pulled inside
The ring rotates in the pulling direction and the inner ring gradually relaxes.
When the diameter is expanded, it works toward the tire center of the outer ring
Since the pulling force will be released, it may be
However, the anti-skid device can be easily removed from the tire surface.
it can.

Therefore, according to the tightening device of the present invention, the
As well as tightening and mounting the anti-slip device wound around the ear surface,
Even when detaching, the rotating body and the winding disk keep the planetary gear.
The shaft that is linked via the mechanism and the gear part provided at the lower end,
One-touch operation that pushes in the axial direction against the spring
Use the inner ring to reduce the tension of the inner ring so that
The outer ring can be easily removed from the side edge. Yo
To remove the anti-skid device from the tire circumference.
Since it is easier to perform than conventional products, it is easy to put on and take off.
Greatly improved to improve handling even more than conventional products
The tightening device has high practical value.

Further, in the case of the structure according to the second aspect, the disk rotation stroke at the time of attaching and detaching the tightening device can be reduced, and the work can be simplified accordingly.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a tightening device according to a first aspect of the present invention, showing a state of being mounted on a tire.

FIG. 2 is an enlarged cross-sectional view taken along the line (X)-(X) of FIG.

FIG. 3 is a sectional view taken along line (Y)-(Y) of FIG.

FIG. 4 is a sectional view taken along line (Z)-(Z) of FIG.

FIG. 5 is an enlarged cross-sectional view of a main part showing an operation when loosening an inner ring.

FIG. 6 is an enlarged perspective view of a tightening operation portion.

FIG. 7 is a front view showing another embodiment of the tightening device according to claim 1, showing a state of being mounted on a tire.

FIG. 8 is an enlarged cross-sectional view taken along the line (W)-(W) of FIG.

FIG. 9 is a front view showing an embodiment of the tightening device according to claim 2, showing a state of being mounted on a tire.

FIG. 10 is a front view of a conventional product, showing how it is mounted on a tire.

[Explanation of symbols]

A: Tightening device 1: Outer ring
2: Inner ring 2 ': String material 3, 3': Tightening operation part 4a,
4a ': insertion hole 5,5': winding disk 6: planetary gear mechanism
6a: Inner gear 6b: Outer gear 32: Substrate 32
a: String insertion passage 33: Housing 33a: Partition wall
35: Rotating body 35a: Hexagonal hole (square hole) 36: Shaft body
36a: saucer part 36b: gear part 36c: locking part
36d: Seat 36e: Spring B: Anti-slip device
C: Tire

Claims (2)

[Scope of utility model registration request] 1. An outer ring made of a stretchable material is laid along an outer peripheral edge of a slip stopper wound around a tire circumferential surface, and an appropriate interval is provided inside the outer ring along the inner periphery of the outer ring. Equipped with an inner ring formed by straddling a string material that can be inserted over a plurality of insertion holes provided for each, and a tightening operation portion that relaxes / tensions the inner ring to expand / shrink its diameter, The tightening operation section is partitioned by a partition wall inside the housing, and is wound on one side.
In addition to deploying, the other side is equipped with a rotating body that can be freely rotated in one direction and can be released from rotation in the other direction ,
The rotation center of the rotating body can be engaged and connected in the rotation direction so that the shaft is
Insert the shaft that is slidable in the direction in a penetrating manner.
Open one end of the through hole through the center of the partition wall of the housing.
Insert it so that it projects toward the winding disk side, and
Between the partition wall and the take-up disc, the shaft can rotate freely
Inner gear that is axially mounted and gear groove formed on the inner circumference of the housing
And is rotatably attached to the boss protruding from the take-up disc.
And a plurality of outer gears that meshly connect the inner gear and the gear groove
It is equipped with a planetary gear mechanism consisting of
At one end of the shaft to be ejected, an opening is made at the center of rotation of the winding disk.
The saucer part that loosely fits into the open hole is provided and
A gear part that engages with the inner gear so as to engage and disengage
On the other end side of the coaxial body protruding from the rotating body.
The seat is fitted and a shaft is attached to the seat in the protruding direction.
Load a spring to urge the gear part of the pan to engage the inner gear.
Becomes a structure in which case, allowed secured to both end portions of the inner ring to said winding disk, the winding preparative inner ring with the inner ring rotated the disk rotation operation of the rotating body allowed to tension winding in the disk A device for tightening an anti-skid device for a tire, characterized by reducing the diameter and pulling the outer ring toward the center of the tire. 2. The winding disk in the tightening operation section,
The tightening device for a tire anti-skid according to claim 1, wherein the device is formed in a large diameter shape having substantially the same diameter as an inner portion surrounded by the inner ring.