JPH0520564Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention facilitates the operation of attaching and detaching tires.
The present invention also relates to an anti-slip device for automobile tires with improved reliability.

(Prior Art) Conventionally, as anti-slip devices for automobile tires, devices disclosed in Japanese Patent Application Laid-Open No. 61-287805, Japanese Patent Application Laid-Open No. 62-122806, etc. are known.

That is, as shown in FIG. 1, the anti-slip device for automobile tires disclosed in the above-mentioned Japanese Patent Application Laid-open No. 61-287805 includes a net-shaped or ladder-shaped anti-slip member 2 that covers the tire 1; The edge member 3 includes an edge member 3 attached to both sides of the anti-slip member 2 along both sides of the edge member 3, and locking means 4 forming both ends of the edge member 3 into an annular shape. Generally, it is composed of a coil spring 30 and a lock wire 31 inserted through the coil spring 30, and one end 32 of the lock wire 31 in the longitudinal direction.
is fixed to the locking means 4, and the other end is fixed to the locking means 4.
The locking means 4 for locking the free end is as shown in the sectional view of FIG.
A lock disk 5 having a locking hole 50 through which the lock wire 31 passes, and a disk case 6 having a pair of claws 85 for tilting each lock disk 5.
and a disk spring 7 for pressing the lock disk 5 against the pawl 85, and the locking hole 50 has one width slightly wider than the thickness of the lock wire 31 and the other width equal to the width of the lock wire 31. It is set sufficiently wide and the lock disk 5
A corner is formed at the end of the locking hole 50 in the thickness direction, and the locking holes 50 formed in the pair of lock disks 5 are formed in series with each other. lock disk 5 to each other
This is a device that is configured to tilt in different directions by 90 degrees and is built into the casing 10. On the other hand, the device published in Japanese Patent Application Laid-open No. 122806/1983 is basically the same as the above-mentioned device. The state in which the anti-slip member 2 is attached to the tire 1 is the same as that described in FIG. 1 above, but the locking means 4 is as shown in FIG. A lock disk 5 having a penetrating locking hole (numerical representation is omitted) is held in a position perpendicular to the lock wire 31 and rotated to tilt the lock disk 5 in both directions from the neutral position. a lock disk receiving portion 6b configured to allow the lock disk to tilt; a disk spring 7 provided in association with the lock disk 5 to maintain the inclination when the lock disk 5 is tilted; This device has an operating lever 8 built into a casing 10 for changing the direction of inclination.

(Problem to be solved by the invention) As described above, the above-mentioned devices are in practical use as this type of anti-slip device for automobile tires. Although it is an extremely effective and highly reliable device, there are still some points to be improved in terms of smoothness of expansion and contraction of the locking means, high-speed running resistance, reliability of locking, and reduction in weight and size.

That is, in the device disclosed in Japanese Patent Application Laid-Open No. 61-287805, two lock disks correspond to the free end of the lock wire. There is some difficulty in the smooth elasticity of the lock, and since the entire lock part is rotated, if a large force is applied in the lateral direction, the lock may sometimes be released. Problems remain, such as the reliability of the results being somewhat inferior, and improvements are needed in these areas.

On the other hand, in the device disclosed in Japanese Patent Application Laid-Open No. 62-122806, etc., the biasing direction of the disk spring 7 that maintains the inclination of the lock disk is diagonal, so a large centrifugal force is applied. In some cases, the stress is reduced and the high-speed running resistance is deteriorated, so there are still some points to be improved.

As mentioned above, all conventional devices have advantages and disadvantages in satisfying the requirements such as smooth expansion and contraction of the locking means, high-speed running resistance, locking reliability, and lightweight and compact design.

The present invention has been devised in view of the above-mentioned viewpoints, and is used as a locking means for an anti-slip device for automobile tires. An object of the present invention is to provide an anti-slip device for an automobile tire having a structure that satisfies the requirements of accurate switching and reduction in weight and size.

(Means for Solving the Problems) As a means for solving the above-mentioned problems, the present invention provides an anti-slip device for automobile tires, which includes a net-shaped or ladder-shaped anti-slip member that covers a tire;
The edge member includes an edge member attached to both sides of the anti-slip member so as to be attached to both sides of the tire, and locking means forming both ends of the edge member into an annular shape. A lock wire is inserted through an elastic body, and one end of the lock wire in the length direction is fixed to the locking means, and the other end is inserted through the locking means and becomes a free end, or The locking means has a locking hole through which the locking wire passes, and the locking means has a pair of locking holes arranged point-symmetrically with respect to the center of the locking means. A lock disk is provided close to both sides of the end of the lock disk remote from the locking hole, and is moved by pushing the end to move the lock disk to a neutral position perpendicular to the lock wire. , a pair of lock disk receiving portions that can be switched and held in an unlocked position and a locked position that are inclined to both sides of the neutral position and inclined in different directions with respect to the lock wire; and a lock wire that is located on both sides of the lock disk. A lock disk comprising a pair of side disk springs wound around one end and the other end, and a center disk spring interposed between the lock disks and shared by two lock wires. biasing means for maintaining said inclination by applying elasticity so as to increase the locking wire restraining action of the locking hole when the locking disk is tilted to the unlocked position or the locked position; A configuration is adopted that includes an operating mechanism that is displaced in conjunction with movement, and a fixing mechanism that fixes the position of the operating mechanism.

(Function) According to the device of the present invention, since a structure is adopted in which one lock disk corresponds to the free end of the lock wire, the resistance of the lock wire is minimized, and the lock wire can be expanded and contracted smoothly. ,
Since the force of the disk spring acts on the lock disk in parallel with the lock wire, it is less susceptible to centrifugal force, improving high-speed running performance.

In addition, the locking means is equipped with a pair of lock disk receiving parts that can be switched and held in a neutral position, an unlocked position, and a locked position by pushing the end of the lock disk. It is possible to reliably switch between the respective positions of the lock disk without being affected by the force acting on the lock disk and the lock wire restraining action of the locking hole.

Further, when the lock disk is tilted to the unlocked position or the lock position, a pair of side disk springs and a center disk spring are provided which apply elastic force to increase the lock wire restraining action of the locking hole and maintain the tilt. Since they are located on both sides of the disk and are wrapped around the locking wires, the locking means can be reliably locked.Moreover, since the locking mechanism is simple, the entire locking means is lightweight and small, and as a result, It has the advantage of being applicable to a wide range of vehicle types.

(Example) Hereinafter, each structure of an anti-slip device for an automobile tire according to an example of the present invention will be described based on FIGS. 1 to 4.

The overall structure of the automobile tire anti-slip device of the present invention is the same as that explained in FIG. 1 above, so a detailed explanation thereof will be omitted.
As shown in FIGS. 2A and 2B, the lock wire 31 is composed of a coil spring 30 and a lock wire 31 disposed through the coil spring 30, and one end 32 of the lock wire 31 is connected to the locking means 4, which will be described later. The other end passes through the locking means 4 and is placed at an appropriate position in the coil spring 30, forming a free end. This free end is provided with a twisted portion to prevent it from slipping out of a locking hole, which will be described later.

As shown in the developed perspective view of FIG. 3, the locking means 4 of this embodiment includes a lock disk 5 for locking the lock wire, and a pair of holding members that hold the lock disk 5 in a tiltable manner. Lock disk receiving parts (pins in the illustrated example) 6a, 6b,
In order to hold the lock disk 5 in each of the neutral, locked, and unlocked positions, and especially to maintain the inclined state in each of the locked and unlocked positions, and to apply elasticity so as to increase the lock wire restraining action of the locking hole, A pair of side disk springs 7, 7 are located on both sides of the lock disks 5, 5 and are wound around one end and the other end of the lock wire 31;
A biasing means consisting of a center disk spring 9 interposed therebetween and shared by the two lock wires 31, 31, and a pair of side plates 10 to be described later for changing the direction of inclination of the lock disk 5.
a, 10b and an upper edge 11, a fixing mechanism 8 to be described later for fixing the position of the operating mechanism, and a casing 10 that holds these members. .

The casing 10 has a pair of pre-divided side plates 10a, 10b and a hollow cylindrical casing body 10c with open sides.
It is formed by integrally joining a and 10b so as to be rotatable at an appropriate angle. A sleeve 14 that engages with a lock wire insertion hole (not shown) is integrally attached to both ends of the casing 10, and the coil spring 3 is attached to the sleeve 14.
The lock wire 31 is inserted by screwing the end portion of the wire 31 into the lock wire 31.

Further, the side plates 10a, 10 are provided at the upper portions of both side edges of the casing body 10c of the casing 10.
Notches 10d and 10d in the circumferential direction are formed with a predetermined length necessary to rotate b at an appropriate rotation angle, and these side plates 10a and 10b are integrated with the casing body 10c, and these side plates 10a and 10
b is configured to be able to rotate clockwise or counterclockwise.

When the side plates 10a and 10b are integrated as part of the casing 10 as described above,
Both ends of the lock disk receiving portions 6a, 6b are
They are fixed to each other by passing through locking holes 13 formed in the side plates 10a and 10b. In this case, the lock disk receiving portions 6a, 6b are provided so as to be close to both sides of the end of the lock disk 5 remote from the locking hole 50 so as to sandwich it therebetween.

When the lock lever 82 and the side plates 10a, 10b rotate, the lock disk receiving portions 6a, 6b fixed to the side plates 10a, 10b rotate in conjunction with the rotational movement of the lock lever 82 and the side plates 10a, 10b. The lock disk 5 held by the portions 6a and 6b is rotated and tilted clockwise or counterclockwise.

Further, the side plate 10 is provided on the upper part of the casing 10.
In the space formed by the upper edges 11 of a and 10b, a lever spring 81, a lock lever 82 around which the lever spring 81 is wound, a holding plate 83 and a seat plate 84 for attaching these are arranged, and the fixing mechanism 8 is formed. And the above lock lever 8
2 rotates together with the side plates 10a and 10b, and has a neutral position, an unlock position, and a lock position, that is, in this embodiment, when rotated clockwise, the lock position is set, and when rotated counterclockwise, the lock position is set. Further, in the case of a neutral position which is an intermediate position between these positions, the position to be released is fixed, but this position is fixed by the lock lever fixing holes 101, 1 drilled in the upper part of the casing 10.
02, the lock lever 82 is the lever spring 81
It is inserted and fixed by the elastic force of the holder, and maintains its position. In addition, the code 1 in the figure
Each of 1a, 831, and 841 is a through hole bored in each member through which the lock lever 82 is held.

In this embodiment, the lock disks 5 are arranged in pairs facing each other with a predetermined interval, and one end is bent to be held between a pair of lock disk receiving portions 6a and 6b, which will be described later. The overall shape is a plate shape in which a portion 5a is formed,
The end portion has a locking hole 50 through which the free end side of the lock wire 31 passes.

In the figure, the lock wire 31 is formed with a rectangular cross section, and the locking hole 50 is formed into a rectangular shape that is slightly larger than the lock wire 31, but the cross section of the lock wire 31 may be rectangular, circular, or other shapes. It may also have a different shape.

Further, the shape of the locking hole 50 is the same as that of the locking wire 3.
1, and when the lock disk 5 obliquely crosses the lock wire 31 at a predetermined angle, the corner portion of one end of the locking hole 50 bites into the circumferential surface of the lock wire 31 in a wedge shape. It is necessary to form it into the desired shape.

A center spring 9 is wound between the pair of lock disks 5, and the lock disk 5
Side springs 7, 7 are wound between and the casing 10. Reference numeral 12 indicates a receiving plate for the side spring 7.

The center and side springs 7, 9 apply a force corresponding to the difference in elasticity between the springs 7, 9 on both sides to the lock wire so as to maintain the tilted state of the lock disks 5, 5. It acts to bias in the direction of 31.

The structure of the anti-slip device according to this embodiment is as described above, and its operation will be explained in detail based on the conceptual configuration diagrams shown in FIGS. 4A, B, and C.

Figure 4A shows the unlocked position;
Figure B shows the neutral position, and Figure 4C shows the locked position.

Now, when the anti-slip member 2 is attached to the tire 1 as shown in FIG. 1, the locking disk 5 of the locking means 4 is rotated counterclockwise from the neutral position (FIG. 4B) to adjust the position. (FIG. 4A), and the anti-slip member 2 can be easily attached to the tire 1.

That is, when the lock disk 5 is in the unlocked state, after the lock disk 5 is biased by the center disk spring 9 and tilted, a force in the direction of extending the edge member 3 (in the direction of arrow X in FIG. 4A) is applied. In the activated state, the lock disk 5
The slope of the lock wire 31 becomes smaller.
Since the pressing force of the upper and lower sides of the locking hole 50 against the locking hole 50 becomes weaker, the locking wire 31 moves in the direction of the arrow X, the edge member 3 is extended, and the anti-slip member 2 is moved to a state where it can be easily attached.

Furthermore, when a force (clockwise) is applied in the direction in which the edge member 3 contracts (in the direction opposite to the arrow The locking hole 5 is pressed in the direction where the slope becomes even larger.
The upper and lower sides of the lock wire 31 are strongly crimped to the lock wire 31, thereby preventing the lock wire 31 from moving and maintaining a stable attachment state with the edge member 3 extended.
can be easily covered.

Then, the lock disk 5 is rotated clockwise from the neutral position shown in FIG. 4B to the state shown in FIG. 4C. In this state, when a force in the direction of contracting the edge member 3, that is, a force in the direction of the arrow X in FIG. The pressure applied to the lock wire 31 is weakened, and the lock wire 31 is thereby free to move. Therefore, the anti-slip member 2 is attached to the tire 1 by the movement of the locking wire 31 in the contraction direction.

In addition, in this installed state, the anti-slip member 2
If a force is applied to extend the lock wire 31 and remove it from the tire 1, that is, a force in the direction opposite to the arrow X in FIG. blocked. As a result, the anti-slip member 2 is attached to the tire 1.
It will remain firmly attached to the

When switching from the unlocked position to the locked position or vice versa, one of the lock disc receiving parts 6b or 6a presses the end of the lock disc 5, and the springs 7, 9 on both sides are pressed.
In order to provide sufficient rotational moment to the lock disk 5 held in the lock wire 3
Reaction force acting from side 1, and lock disk 5
An effective force counteracting the wedge force of the lock disk 5 can reliably and smoothly switch and rotate the lock disk 5.

The above embodiment is an example of a device in which both ends of the lock wire 31 are free ends, but as mentioned above,
As shown in FIG. 2A, there is an example in which one end of the locking wire 31 is locked in the locking hole 50 of the locking means 4, and in that case, the locking means has the same function as the above embodiment. By adopting this, the intended purpose can be achieved.

(Effects of the invention) According to the device of the present invention, since a configuration is adopted in which one lock disk corresponds to the free end of the lock wire, the resistance of the lock wire is minimized, and the lock wire can be expanded and contracted smoothly. Since the force of the disk spring acts on the lock disk in parallel with the lock wire, it is less susceptible to centrifugal force, improving high-speed running performance.

Furthermore, when switching between the lock position and the unlock position, by providing a pair of lock disk receiving parts, in either case, the tire side
It is possible to move the lock disk with a force that sufficiently exceeds the reaction force from the lock wire side and the wedge force due to the locking hole in the lock disk, and therefore, compared to conventional devices that rely on spring force etc. Switching operations are performed reliably and smoothly.

Furthermore, since the entire locking means is configured to be rotatable, the locking means can be reliably locked, and since the locking mechanism is simple, the entire locking means is lightweight and compact. This has the effect of widening the range of applicable vehicle models.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the device of the present invention attached to a tire, Fig. 2 A and B are conceptual diagrams showing an example of locking the end of the lock wire, and Fig. 3 is an implementation of the locking means applied to the device of the present invention. Developed perspective view showing an example, FIG. 4A,
B and C are operation diagrams showing the operation of the locking means applied to the device of the present invention, and FIGS. 5 and 6 are sectional views showing the structure of the conventional locking means. The names of the codes are as follows. 1... Tire, 2... Anti-slip member, 3... Edge member, 4...
Locking means, 5...Lock disk, 6a, 6b...
... Lock disk receiving part, 7 ... Side disk spring, 8 ... Fixing mechanism, 9 ... Center disk spring, 10 ... Casing, 10
a, 10b... Side plate of the casing, 10c... Casing body, 10c... Notch in the casing body, 11... Upper edge of the side plate of the casing, 12...
Side disk spring receiving plate, 13...Lock disk receiving portion end locking hole, 14...Sleeve,
15... Lock disc receiving part operating shaft, 30...
Coil spring, 31... Lock wire, 32
... end of locking wire, 50 ... locking hole.

Claims (1)

[Scope of utility model registration request] A net-shaped or ladder-shaped anti-slip member 2 that covers the tire 1, edge members 3, 3 attached to both sides of the anti-slip member 2 along both sides of the tire 1, and edge members 3, 3 of the edge members 3, 3. The edge members 3, 3 are composed of an elastic body 30 and a lock wire 31 inserted through the elastic body 30. One end 32 is fixed to the locking means 4, and the other end is inserted through the locking means 4 to become a free end, or is inserted through the locking means 4 so that both ends are free ends, and, The locking means 4 has a locking hole 50 through which the lock wire 31 passes, and a pair of lock disks 5, 5 arranged symmetrically with respect to the center of the locking means 4; ,5
are provided close to both sides of the end portion away from the locking hole 50, and are moved by pushing the end portion to move the lock disks 5, 5 to a neutral position where they intersect perpendicularly to the lock wire 31; A pair of lock disk receiving portions 6a and 6b that can be switched and held in an unlocked position and a locked position that are inclined to both sides of the neutral position and inclined in different directions with respect to the lock wire 31, and both sides of the lock disks 5, 5. A pair of side disk springs 7, 7 are located and wound around one end and the other end of the lock wire 31, and two lock wires 31, 31 are interposed between the lock disks 5, 5. A center disk spring 9 provided in common with the lock disks 5, 5 is elastically applied so as to increase the restraining action of the lock wire 31 in the locking hole 50 when the lock disks 5 are tilted to the unlocked position or the locked position. energizing means for maintaining the inclination, and the lock disk receiving portion 6;
It is characterized by a configuration comprising operating mechanisms 10a, 10b, 11 that displace the positions of the operating mechanisms 10a, 10b, 11 in conjunction with the displacement movements of the operating mechanisms 10a, 6b, and a fixing mechanism 8 for fixing the positions of the operating mechanisms 10a, 10b, 11. Anti-slip device for automobile tires.