JPS6317665Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tire chain mounting tool used for winding a chain around an automobile tire.

Generally, when driving on snowy or icy roads, chains are wrapped around tires to prevent them from slipping, but in this case, attaching the chains to the tires is extremely difficult and time-consuming, and the work is time-consuming. Since the conditions are not good, it has been considered to use conventional tire chain mounting tools. In other words, from a functional point of view, the tire chain attachment tool fixes one end of the chain to the tire, moves the car itself, and wraps the chain around the tire.
Next, both ends of the chain are attached, and the tire chain mounting tool is removed from the tire to carry out mounting work, which greatly improves work efficiency. Conventional tire chain mounting tools, which were formed based on this idea, have a U-shaped elastic plate band along the outer circumferential surface of the tire, and the chain is temporarily locked at the end of this U-shaped elastic plate band. The arms are pivoted to both ends of the base along the tire ret surface,
The pivoted arm is elastically attached to the sidewall of the tire by a spring,
It had a structure in which the chain was temporarily locked using a locking device or a hook provided on the arm body.

However, such a structure has not reached the level of practical use due to the following reasons. In other words, in the former case, when the tire rotates once and is caught between the tire and the ground, the part that touches the tread is stretched and the arm opens, and the chain is still being pulled, so its own weight is If it is added to the tire, it will easily lose its grip on the tire and come off the sidewall. In the latter case, the arms are given a clamping force by the spring or the elasticity of the spring, and this is used to clamp the sidewall of the tire and obtain the locking force to the tire, so if the spring or the elasticity of the spring is weak, the tire It has the disadvantage that it easily comes off from the tire, and if the elasticity is strong, it is difficult to attach it to the tire. If the spring or spring undergoes a chemical change due to rust or corrosion, or a physical change such as elastic fatigue, the clamping force will decrease and the locking force to the tire will gradually be lost, causing the chain to fall off while being attached to the tire. It becomes easier.

Next, a structure in which a frame strip with a U-shaped cross section is formed into a U-shape and a clamping rod is loaded inside it has a technical difficulty in forming the frame strip in a U-shape. There are still problems before it can be put into practical use.

This invention was devised in view of the above-mentioned points, and aims to solve the above-mentioned drawbacks and to obtain a fully practical tire chain mounting tool.

This idea consists of a roughly H-shaped plate with both left and right ends cut off on the horizontal center line, folded in half at the horizontal center line, and a bottom section with a U-shaped cross section and an erected upper part of both left and right ends of the bottom section. A frame body is formed in which the arm portions consisting of front and rear walls are connected to each other, and the side edges of the left and right arm portions of the frame body are respectively bent to form guide walls, and a jar cross section is formed in the frame body. A guide rod into which a clamping rod is fitted and which is fitted from the top at the bottom and an engaging part of the clamping rod is fixed by a rivet penetrating through the front and rear walls of the clamping rod and formed on both left and right sides. A sliding plate with a retaining rod protruding from the front surface and a pressing rod protruding from the back side is inserted into the wall so that the retaining rod protrudes from both the left and right sides, and the sliding plate is inserted into the left and right arms between the front and rear walls. The front and rear walls are fixed in parallel by fitting locking pins into the gaps created by the constriction and concave bending of the tip end of the clamping rod.

Hereinafter, an embodiment of this invention will be described with reference to the drawings. 1 is a frame body, which is a roughly H-shaped plate with both left and right ends cut out on the horizontal center line, and is folded in half at the horizontal center line. , a bottom portion having a U-shaped cross section and arm portions 2, 2' are formed on both left and right sides. Reference numerals 2 and 2' denote arm parts, which stand up on the left and right sides of the frame 1, and are made up of front walls 3 and 3' and rear walls 4 and 4', which are continuous from the upper left and right ends of the bottom part 7; , 2' have guide walls 5, 5', 6, 6' formed by bending the side edges of the front and rear walls 3, 3', 4, 4' inwardly.
Reference numeral 8 denotes a clamping rod, which is made entirely of steel wire and has a pot cross-section shape, with clamping parts 9 narrowed from both left and right ends.
9′ continues to the actuating portions 10, 10′ formed in a curved shape, and is further bent to the left and right from both left and right lower ends of the engaging portion 12 formed in a shape, respectively.
It is integrally formed and continues to 11'. This clamping rod 8 is fitted into the frame 1, and a stand rod 13 having a U-shaped cross section is fitted from above at the bottom 7.
It is fixed at the engaging portion 12 by rivets 15, 15' penetrating the front and rear walls 14, 14' of the stand rod 13. Reference numerals 16 and 16' designate locking pins which are the locking portions of the clamping rods 8 that are fitted inside the front and rear walls 3, 3', 4 and 4' of the left and right arms 2 and 2' of the frame body 1, respectively. It is fitted into the narrow concave gap formed by the arms 9, 9', and fixes the front and rear walls 3, 3', 4, 4' of both arm parts 2, 2' in parallel, respectively. 17 and 17' are sliding plates with holes 18 and 18, respectively, in the plates having a U-shaped cross section.
18', 18' are drilled, and the holes 18, 18, 18',
A retaining rod 19 formed in a U-shape at 18',
19' is inserted, and the press rods 20, 20' having a U-shaped cross section are used to sandwich and adhere the two on the back side.
These sliding plates 17, 17' are slidably inserted into the guide walls 5, 5', 6, 6' formed on the sides of the frame 1, respectively, as shown in FIGS. 1 and 2. By sliding up and down in this manner, the actuating parts 10, 10' of the clamping rod 8 are pressed, respectively, and the clamping parts 9, 9' at both ends are operated inward.

In this invention, in order to use the above-described structure, firstly, the sliding plates 1 which are inserted into the left and right sides are inserted.
7 and 17' are in the state shown in FIG. 1, the chain 25 is fitted onto the tire 21 to be mounted from the outer circumferential direction toward the center until the pedestal 13 joins to the tread 22. Next, the sliding plate 17,1
7' toward the center of the tire 21 to move the sidewalls 23, 2 of the tire 21 as shown in FIG.
3' Above all, the rim side 24, 24' has a clamping rod 8
slide until the clamping parts 9, 9' are clamped. With this operation, the mounting tool treads the tire 21 to the tread 22.
and both rim sides 24, 24',
To securely lock onto a tire 21. Next, the chain 25 prepared in advance is attached to the connecting fittings 26, 2 at the tip.
6' are respectively engaged with retaining rods 19, 19' which protrude from the surfaces of the sliding plates 17, 17', and are fixed to both sides of the tire 21 as shown in FIG. Next, as shown in the process of FIG. 5A, the chain 25 is aligned in the trajectory direction of the tire 21 (the direction opposite to the arrow), and the tire 21 is moved by moving the car itself as shown in the process of FIG. 5B and C. After one rotation, the chain 25 automatically winds around the tire 21. Next, the sliding plates 17 and 17' are respectively operated toward the outer circumference of the tire 21 to move the connecting fittings 26 and 26' to the retaining rods 19 and 17'.
19' disengage the end link 27 of the chain 25,
27' respectively, and attach the mounting tool to the tire 21.
When the chain 25 is removed from the chain 25, the installation work of the chain 25 is completed. Tire 21 with a chain band such as a rubber ring
It is also necessary for safety to stretch the side chain of the chain 25 attached to the.

As mentioned above, this invention does not use any elastic plate bands or springs, eliminates the elastic fastening structure, and adopts a new fastening rod 8, so that the fastening force to the tire 21 is ensured. and chain 25
When attaching the chain 25 to the tire 21, the chain 25 can be easily attached to the tire 2 without falling off during the operation.
It can be attached to 1. Moreover, since the structure is simpler than conventional mounting tools of this type, it is easy to manufacture and can be mass-produced at low cost.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a partially cutaway front view, Figure 2 is a partially cutaway front view showing the operating state, Figure 3 is a cross-sectional plan view taken along line A-A in Figure 2, and Figure 4 is a side view showing the operating state. FIG. 5 is an explanatory diagram showing the mounting process in the order of A, B, and C. DESCRIPTION OF SYMBOLS 1... Frame body, 2... Arm part of frame body, 8... Clamping rod, 13... Stand rod, 15... Rivet, 16... Locking pin, 17... Sliding plate, 21... ...Tire, 25...
...Chain.

Claims (1)

[Scope of utility model registration request] A roughly H-shaped plate with both left and right ends cut off on the horizontal centerline is bent in half at the horizontal centerline to form a cross section of U.
A frame is formed in which a letter-shaped bottom and arms consisting of front and rear walls standing upright on both left and right ends of the bottom are connected, and the side edges of the left and right arms of the frame are respectively bent to form a guide wall. A clamping rod formed in the shape of a pot cross section is inserted into the frame, and the clamping rod is fitted into the frame by means of a stand rod fitted from the top at the bottom and rivets penetrating the front and rear walls of the stand rod. The engaging part is fixed, and a sliding plate with a retaining rod protruding from the surface and a pressing rod protruding from the back is fitted to the guide walls formed on the left and right sides so that the retaining rods protrude from the left and right sides. A tire chain in which the front and rear walls are fixed in parallel by inserting locking pins into the gaps created by the constriction and concave bending of the end clamping parts of the clamping rods that fit between the front and rear walls on both the left and right arms. Installation tools.