JPH0379201B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a vehicle chain that is used auxiliary to attach an anti-skid chain to the double tires used as the drive wheels of large vehicles such as trucks and buses. Relating to attachments.

[Prior art]

In order for vehicles to run on frozen roads and snow without slipping during the winter, anti-slip chains are attached to the tires used as drive wheels.

The drive wheels of large vehicles such as trucks and buses are often equipped with double tires, in which two tires (outside and outside) are firmly attached to the axle.In order to attach a chain to such double tires, it is necessary to The chain is unfolded and placed on the ground in front or behind the tire, the car is moved and the tire is placed on the chain, the chain is lifted and wrapped around the tire, and both ends of the chain are tied together.

As mentioned above, when installing the chain on a double tire by hand, after placing the tire on the chain, the worker crawls under the vehicle body and, in a half-centred position, attaches the chain, which is quite heavy. You have to lift it up and wrap it around the tire in the narrow space between the fender and the tire.
This work is extremely difficult, labor-intensive, and requires long hours of hard work in the cold.

Therefore, in order to simplify the work of winding chains around double tires, a chain winding device for double tires has been proposed in Japanese Patent Application Laid-Open No. 115002/1983.

This device has a hook attached to the center of the holding rod via an elastic spring, and when attached to a tire, the holding rod is attached to the tire tread surface and the hook is inserted into the gap between the tires. After this, the position of the holding rod on the tire tread surface is changed and the elasticity of the elastic spring is applied to press the holding rod against the tire tread surface.

[Problem to be solved by the invention]

However, with the above-mentioned device, in order to hook the hook into the hole in the wheel of a tire, the hook must be groped to find the hole in the wheel in a narrow gap in the tire that the hands cannot freely fit into. In addition, in order to press the retaining rod against the tire tread surface, the position of the retaining rod must be changed on the tire tread surface to apply the elasticity of the elastic spring. When the chain is locked and the car is moved, the telescopic spring may loosen at the stage where the holding rod touches the ground, causing the hook to come off and the holding rod falling off, or the holding rod may move on the tire tread surface, causing the chain to wind up. There is a risk that something that may cause problems may occur.

This invention has been made in view of the above points, and it is an object of the present invention to provide a convenient chain mounting tool that can be easily attached to a double tire in a one-touch manner and that can securely wrap the chain around the tire. purpose.

[Means to solve the problem]

In order to achieve the above object, the gist of the present invention is to have a locking part for locking the end of the chain at both ends, and to cross the tire tread surface on the double tire so that the locking part is attached to the side of the tire. It consists of a holding rod with a length that slightly protrudes from the center of the holding rod, and a clamping body provided through a support member on the central lower surface of the holding rod, and the thickness of the clamping body in the width direction of the holding rod is such that it can freely move in and out of the tire gap.
A mounting device for a chain for a vehicle, characterized in that both side surfaces of the clamping body are formed into crimping surfaces that gradually increase the amount of protrusion toward the bottom in correspondence with the opposing tire side surfaces inside the minimum gap part of the tire gap. It is in.

[Effect]

Outside the double tire, insert the clamping body into the tire gap with the holding rod parallel to the tire gap, align the holding rod with the tire tread surface, and turn it horizontally until it crosses the tire tread surface. The clamping body rotates together with the holding rod inside the minimum gap, and the crimp surface of the clamping body presses against both tire sides, creating a clamped state. At this time, the clamping body has a A pulling force is generated and the holding rod is pressed against the tire tread surface and stabilized.

When the end of the chain is engaged with the engagement portions at both ends of the holding rod and the tire is rotated, the end of the chain is reliably brought to a predetermined position and wrapped around the tire.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the present invention with some parts removed, FIG. 2 is a side view of the same, and FIG. 3 is a front view of the present invention when it is mounted on a tire.

In the figure, 1 is a holding rod, and 2 is a clamping body provided on the lower center surface of the holding rod 1 with a support member 3 interposed therebetween.

The holding rod 1 has a double tire fixed in parallel to the axle of the vehicle, that is, an inner and outer tire 4 along its length.
A, 4b cross the tire tread surface and both ends are long enough to slightly protrude to the side of the tire, and both ends are provided with locking parts 5 in which the chain ends can be freely engaged and detached, and the center part is aligned with the tire gap 6. It is bent into a shallow concave shape.

The clamping body 2 has a thickness in the width direction of the holding rod 1 so that it can freely move in and out of the tire gap 6, and has both side surfaces of the clamping body at the lower part corresponding to the opposing tire sides inside the minimum gap part of the tire gap 6. The crimping surface 7 is formed so that the amount of protrusion is gradually increased toward the crimping surface 7.

The support member 3 supports the clamping body 2 without rotation at a predetermined distance from the holding rod 1.

The support member 3 of the embodiment is configured such that the distance between the holding rod 1 and the clamping body 2 can be adjusted according to the size of the double tire. A tube 8, an inner tube 9 which is inserted non-rotatably into the outer tube 8 in a telescopic manner and has a clamping body 2 fixed to its lower end, and an outer tube 8 inserted from the upper surface of the holding rod 1.
A female screw portion 10 inserted into the inner tube 9 and provided at the upper end of the inner tube 9
The head 12 of the adjusting screw 11 is rotated on the upper surface of the retaining rod 1 to tighten the outer tube 8.
The distance between the holding rod 1 and the clamping body 2 is adjusted by changing the exposed length of the inner tube 9 relative to the holding rod 1.

However, when adjusting the separation distance between the holding rod 1 and the clamping body 2 for the first time, the separation distance between the holding rod 1 and the clamping body 2 is set to be long by rotating the adjustment screw 11, and Insert the holding rod 1 into the tire gap 6, turn the holding rod 1 so that it crosses the tire tread surface, and apply it to the tire tread surface.
When the adjustment screw 11 is rotated in the direction of pulling up, the crimp surface 7 of the clamping body 2, which gradually increases the amount of protrusion toward the bottom, is pressed against the side surfaces of the inner and outer tires 4a and 4b, resulting in a clamped state. The holding rod 1 is pressed against the tire tread surface. (3rd
(See figure) Once the clamping relationship between the clamping body 2 and the applicable tire is adjusted once, there is no need to make adjustments each time the chain is actually installed.
To attach and detach the attachment to the tire, hold the holding rod 1 and move the clamping body 2 into and out of the tire gap 6, and move the holding rod 1 horizontally from a position parallel to the tire gap 6 to a position crossing the tire tread surface. Just turn it.

Furthermore, if the applicable tire is determined from the beginning, the length of the support member may be of a fixed type and made to match the tire size.

Therefore, to attach a chain to a double tire, use the mounting tool of this invention to wrap the chain around the tire, remove the mounting tool from the tire, and then
The ends of the chain wrapped around the tire can be tied together manually.

[Efficacy]

As described above, the fixture of the present invention provides the following effects.

(1) Once the clamping relationship of the clamping body is adjusted in advance according to the applicable tire, attachment and detachment of the mounting tool to the tire can be easily done with one touch by simply holding the holding rod on the tire and turning it horizontally. Because it can be done, it can be done reliably in a short time without any technical skill.

(2) Even if the tire deforms when the mounting bracket is attached to the tire and the holding rod comes into contact with the ground as the tire rotates,
Because this deformation does not loosen the clamping relationship between the clamping body and the tire, it has excellent stability without being affected by vehicle weight or loaded weight, and can securely wrap the chain around the tire. .

[Brief explanation of drawings]

The drawings show embodiments of the invention,
Figure 1 is a front view of this invention with some parts removed;
The figure is a side view of the same, and FIG. 3 is a front view of the device mounted on a tire. DESCRIPTION OF SYMBOLS 1... Holding rod, 2... Clamping body, 3... Supporting member, 4...
Tire, 5... Locking part, 6... Tire gap, 7... Crimping surface, 8... Outer tube, 9... Inner tube, 10... Female screw part, 11
...adjustment screw, 12...screw head.

Claims (1)

[Claims] 1. A holding rod having locking portions at both ends for locking the chain ends, and having a length such that the locking portions slightly protrude to the side of the tire across the tire tread surface on the double tire, and the center of the holding rod. It consists of a clamping body installed on the lower surface via a support member, and the thickness of the clamping body in the width direction of the holding rod is such that it can freely move in and out of the tire gap, and both sides of the clamping body are placed inside the minimum gap part of the tire gap. A mounting tool for a vehicle chain, characterized in that it is formed on a crimp surface that protrudes gradually toward the bottom in correspondence with the side surface of an opposing tire.