Tire chains

Abstract

To provide a tire chain which can be easily attached. [Solution] A tire chain 10 comprising a first fixed portion arranged on one of opposing sidewall surfaces T2 of a tire T, a second fixed portion arranged on the other side, and a first chain 110 and a second chain 120 arranged to span the tread surface T1 of the tire from one sidewall surface to the other sidewall surface, with one end connected to the first fixed portion and the other end connected to the second fixed portion. The first fixed portion comprises a band-shaped belt portion that is passed through a hole H1 that passes through a tire wheel H, and the second fixed portion comprises a ratchet mechanism that winds up the belt portion. By winding up the belt portion passed through the hole in the tire wheel with the ratchet mechanism of the second fixed portion, the tire and tire wheel are tightened by the first chain, the second chain and the belt portion, and the first chain and the second chain are fixed to the tire.

Description

[Technical field]

[0001] The present invention relates to tire chains. [Background technology]

[0002] 2. Description of the Related Art Conventionally, tire chains for automobiles used to help automobiles escape from a stuck state on snowy roads or the like are known that are attached so as to cover the entire tire (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-101188 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, tire chains as described above require the vehicle to be jacked up or moved before they can be attached, which poses the problem of being very time-consuming to install.

[0005] The object of the present invention is to provide a tire chain that can be easily installed. [Means for solving the problem]

[0006] (1) A tire chain according to the present invention comprises a first fixed portion arranged on one of the opposing sidewall surfaces of the tire, a second fixed portion arranged on the other side, and a first chain and a second chain arranged to span the tread surface of the tire from one sidewall surface to the other sidewall surface, one end of which is connected to the first fixed portion and the other end of which is connected to the second fixed portion. The first fixed portion comprises a band-shaped belt portion that is passed through a hole that penetrates the tire wheel, and the second fixed portion comprises a ratchet mechanism that winds up the belt portion. By winding up the belt portion passed through the hole in the tire wheel with the ratchet mechanism of the second fixed portion, the tire and tire wheel are tightened by the first chain, the second chain and the belt portion, and the first chain and the second chain are fixed to the tire.

[0007] (2) In addition, the tire chain of the present invention may be provided with a third chain that is placed on the tread surface of the tire and has one end connected to the first chain and the other end connected to the second chain.

[0008] (3) In addition, the tire chain of the present invention may be provided with a first cover portion covering the first fixing portion and a second cover portion covering the second fixing portion, and when the first chain and the second chain are fixed to the tire, the first cover portion and the second cover portion may each be in contact with the sidewall surface. Effect of the Invention

[0009] According to the present invention, it is possible to provide a tire chain that can be easily installed. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view showing an entire tire chain according to an embodiment of the present invention; [Diagram 2] 1 is a perspective view showing an entire tire chain according to an embodiment of the present invention; [Diagram 3] 1 is a plan view showing an entire tire chain according to an embodiment of the present invention. [Figure 4] 1 is a bottom view showing an entire tire chain according to an embodiment of the present invention. FIG. [Diagram 5] 1A and 1B are diagrams showing a chain ring constituting a tire chain according to the present embodiment, in which (a) is a plan view and (b) is a side view. [Figure 6] 1A and 1B are diagrams showing a chain ring constituting a tire chain according to the present embodiment, in which (a) is a cross-sectional view taken along line AA, and (b) is a cross-sectional view taken along line BB. [Figure 7] 1A and 1B are diagrams showing a chain fixing portion of a tire chain according to the present embodiment, in which (a) is a side view and (b) is a perspective view showing the entire cover member. [Figure 8] 1A and 1B are diagrams showing a tire chain winding device according to the present embodiment, in which (a) is an oblique view of the handle portion of the winding device when not rotating, and (b) is an oblique view of the handle portion of the winding device when rotating. [Figure 9] 1A and 1B are diagrams showing a chain fixing portion of a tire chain according to the present embodiment, in which (a) is a side view and (b) is a perspective view showing the entire cover member. [Figure 10] FIG. 2 is a diagram showing a state in which a tire chain according to the present embodiment is attached to a tire. [Figure 11] This is a state diagram showing the state when the fixing belt is wound up by the winding device to attach the tire chain of this embodiment to a tire, where (a) is a diagram showing the state when the fixing belt is set in the winding device, and (b) is a diagram showing the state when the fixing belt is being wound up by the winding device. [Figure 12] 1 is a diagram showing a state in which a belt winding shaft constituting a tire chain winding device according to an embodiment of the present invention is winding a fixed belt. FIG. [Figure 13] 1A and 1B are diagrams showing the state when a tire chain according to this embodiment is attached to a tire, where (a) is an oblique view of the attached state, and (b) is a side view of the attached state. [Figure 14] FIG. 2 is a diagram showing the state when a tire chain according to the present embodiment is attached to a tire. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An embodiment of the present invention will be described with reference to Figures 1 to 14. In the following description, directions will be based on the directions shown in the drawings unless otherwise specified.

[0012] The tire chain 10 according to this embodiment is attached to a tire T of an automobile to escape from a stuck state. As shown in Fig. 1 and Fig. 2, the tire chain 10 includes a plurality of chains 100 arranged on the tread surface T1 (the surface of the tire T that contacts the road surface on which the automobile travels) of the tire T, and a chain fixing part 200 that fixes the chains 100 (see Fig. 13 and Fig. 14).

[0013] The chain fixing part 200 is composed of a first fixing part consisting of a fixing belt 210 and a belt support plate 220, and a second fixing part consisting of a winding device 230 and a device support plate 240 (see Figs. 1 to 4).

[0014] The belt support plate 220 supports the chain 100 (a first chain 110 and a second chain 120 described later) and the fixed belt 210. The belt support plate 220 is a flat metal plate having a predetermined thickness, and is formed in a substantially rectangular shape in a plan view (see FIG. 3). In addition, a protruding portion 221 that protrudes in a direction perpendicular to the long side is provided near the center of one of the two long sides of the belt support plate 220 in a plan view, and the protruding portion 221 is provided with a belt hole 221a for supporting (connecting) the fixed belt 210.

[0015] The belt hole 221a has a substantially rectangular shape in a plan view, and the length of the long side of the belt hole 221a in a plan view corresponds to the width of the fixed belt 210. Then, by passing one end of the fixed belt 210 through the belt hole 221a and fixing it, the fixed belt 210 is rotatably supported (connected) to the belt support plate 220 (see FIG. 1).

[0016] The belt support plate 220 has ring holes 222a, 222b at both ends near the short sides thereof for connecting a hook ring F, which will be described later. The ring holes 222a, 222b are substantially rectangular in plan view. With the chain 100 connected to the hook ring F, the hook ring F is connected to the ring holes 222a, 222b, whereby the belt support plate 220 and the chain 100 (the first chain 110 and the second chain 120) are connected via the hook ring F.

[0017] Furthermore, the belt support plate 220 is provided with two mounting holes 223a, 223b for mounting a belt side cover 300, which will be described later (see FIG. 3).

[0018] As shown in Fig. 3, the belt support plate 220 of this embodiment has a total length PL of about 100 mm, a width (excluding the protruding portion 221) PW of about 20 mm, and a thickness of about 3 mm. The size of the support plate 220 is not limited to these values ​​and can be any value.

[0019] As described below, the fixing belt 210 is passed through a hole H1 penetrating the tire wheel H to fix the chain 100 to the tire T. The fixing belt 210 is in the form of a belt of a predetermined length, and is made of synthetic fiber. The fixing belt 210 of this embodiment has a width BW of about 25 mm and a total length of about 620 mm. The size of the fixing belt 210 is not limited to these values, and can be any value. The fixing belt 210 in this embodiment corresponds to the belt part of the first fixing part of the present invention.

[0020] The device support plate 240 supports the chain 100 (the first chain 110 and the second chain 120) and the winding device 230, and is a flat metal plate having a predetermined thickness, similar to the above-mentioned belt support plate 220, and is formed in a substantially rectangular shape in a plan view (see FIG. 3). A base 231 of the winding device 230, which will be described later, is integrally formed with the device support plate 240 near the center of one of the two long sides of the device support plate 240 in a plan view.

[0021] Similarly to the belt support plate 220, the device support plate 240 is provided with ring holes 241a and 241b for connecting a hook ring F at both ends near the short side of the device support plate 240. With the chain 100 connected to the hook ring F, the device support plate 240 and the chain 100 (the first chain 110 and the second chain 120) are connected to each other via the hook ring F by connecting the hook ring F to the ring holes 241a and 241b.

[0022] The device support plate 240 is also provided with two mounting holes 242a and 242b for mounting a device side cover 400, which will be described later.

[0023] In this embodiment, the size (total length, width, thickness, etc.) of the device support plate 240 is the same as that of the belt support plate 220.

[0024] The winding device 230 is a device for winding up the fixing belt 210, and mainly includes a base portion 231, a belt winding shaft 232, and a handle portion 233, as shown in FIGS.

[0025] As described above, the base 231 of the winding device 230 is formed integrally with the device support plate 240. As shown in Fig. 8, the base 231 is provided with two bearing holes 231a and 231b for rotatably supporting the belt winding shaft 232, and fitting holes 231c and 231d for fitting the stopper member 236 (see Fig. 8(b)). The stopper member 236 meshes with the teeth of the gears 234 and 235 to prevent the gears 234 and 235, which rotate integrally with the belt winding shaft 232, from rotating, and is slidably attached to the base 231 by fitting into the above-mentioned fitting holes 231c and 231d.

[0026] The belt winding shaft 232 is a part that winds up the fixed belt 210, and is composed of two semi-cylindrical shafts 232a and 232b. The belt winding shaft 232 is fitted into bearing holes 231a and 231b provided in the base 231, and rotates integrally with two gears 234 and 235 arranged on both end sides of the belt winding shaft 232. When the belt winding shaft 232 is fitted into the bearing holes 231a and 231b, a slit portion 232c is formed, and the fixed belt 210 can be passed through this slit portion 232c. The fixed belt 210 passed through the slit portion 232c is wound up by the rotation of the belt winding shaft 232.

[0027] The handle portion 233 is for rotating the belt winding shaft 232. The handle portion 233 has two fitting holes 233a and 233b into which the belt winding shaft 232 attached to the bearing holes 231a and 231b of the base portion 231 fits, and is attached to the base portion 231 so as to be rotatable around the belt winding shaft 232 fitted into the fitting holes 233a and 233b as a support shaft. The handle portion 233 is also provided with fitting holes 233c and 233d into which a locking member 237 for rotating the gears 234 and 235 fits. The locking member 237 is slidably attached to the handle portion 233 by fitting into the fitting holes 233c and 233d.

[0028] In the retractor 230, the handle portion 233, the belt winding shaft 232, the gears 234 and 235, the stopper member 236, the lock member 237, etc., described above, form a ratchet mechanism that rotates the belt winding shaft 232 in only one direction.

[0029] Here, the operation of rotating the belt winding shaft 232 of the winding device 230 will be described. The handle portion 233 is rotatable about the belt winding shaft 232 between a first position where it is closest to the base portion 231 and a second position where it is farthest from the base portion 231 (see FIGS. 8(a) and (b)). Since the locking member 237 attached to the handle portion 233 and the teeth of the gears 234 and 235 are engaged with each other, when the handle portion 233 is rotated toward the second position (in the direction away from the base portion 231), the gears 234 and 235 also rotate accordingly. At this time, since the engagement between the stopper member 236 attached to the base portion 231 and the teeth of the gears 234 and 235 is released in conjunction with the rotation of the gears 234 and 235, the belt winding shaft 232 also rotates in conjunction with the rotation of the gears 234 and 235.

[0030] On the other hand, when the handle portion 233 is rotated from the second position toward the first position (in the direction approaching the base portion 231), the meshing state between the locking member 237 attached to the handle portion 233 and the teeth of the gears 234, 235 is released, but the teeth of the gears 234, 235 are in meshing state with the stopper member 236 attached to the base portion 231, so that the gears 234, 235 cannot rotate. As a result, the belt winding shaft 232 does not rotate either.

[0031] In this way, when the handle portion 233 of the winding device 230 rotates in a direction away from the base portion 231, the belt winding shaft 232 also rotates accordingly, whereas when the handle portion 233 rotates in a direction approaching the base portion 231, the belt winding shaft 232 does not rotate. That is, the belt winding shaft 232 rotates only based on the rotation of the handle portion 233 in a direction away from the base portion 231. As a result, the fixed belt 210 can be wound by the belt winding shaft 232 by repeatedly performing a rotation operation of the handle portion 233 in a direction away from the base portion 231 and a rotation operation in a direction approaching the base portion 231. To remove the fixed belt 210 wound around the belt winding shaft 232, the meshing state between the stopper member 236 attached to the base 231 and the teeth of the gears 234, 235 is artificially released, and the belt winding shaft 232 is rotated in the opposite direction to the rotation direction when winding up the fixed belt 210.

[0032] Next, the chain 100 will be described. The chain 100 comes into contact with the road surface when the tire chain 10 is attached to a tire T, and prevents the tire T from spinning freely. The tire chain 10 according to the present embodiment includes a first chain 110, a second chain 120, and a third chain 130 as the chain 100.

[0033] 3 and 4, the first chain 110 includes a chain A111 and a chain B112 configured by connecting a plurality of annular chain rings R (seven in this embodiment), and an annular joint ring J connecting the chain A111 and the chain B112. The chain ring R at one end of the chain A111 and the chain ring R at one end of the chain B112 are connected to the joint ring J, so that the chain A111 and the chain B112 via the joint ring J form a single chain.

[0034] In addition, the chain ring R at the other end of the chain A 111 (the chain ring R located at the end opposite to the joint ring J) and the chain ring R at the other end of the chain B 112 are each connected to the hook ring F connected to the belt support plate 220 and the device support plate 240 described above. In this way, the first chain 110 is connected (supported) to the belt support plate 220 and the device support plate 240.

[0035] The second chain 120 has a structure similar to that of the first chain 110, and includes a chain C121 and a chain D122 formed by connecting a plurality of chain rings R (seven in this embodiment), and an annular joint ring J connecting the chain C121 and the chain D122. The chain ring R at one end of the chain C121 and the chain ring R at one end of the chain D122 are connected to the joint ring J, so that the chain C121 and the chain D122 via the joint ring J form one chain. The chain ring R at the other end of the chain C121 and the chain ring R at the other end of the chain D112 are connected to hook rings F connected to the belt support plate 220 and the device support plate 240, respectively, so that the second chain 120 is connected (supported) to the belt support plate 220 and the device support plate 240.

[0036] The third chain 130 is configured by connecting a plurality of chain rings R (three small ones in this embodiment), with the chain ring R at one end connected to the joint ring J of the first chain 110 and the chain ring R at the other end connected to the joint ring J of the second chain 120. In this way, the first chain 110 and the second chain 120 are connected via the third chain 130.

[0037] 3, in this embodiment, the total length L1 of the first chain 110 and the second chain 120 is about 725 mm, and the total length L2 of the third chain 130 is about 65 mm. Note that the sizes of the first chain 110, the second chain 120, and the third chain 130 are not limited to these values ​​and can be any value.

[0038] Next, the chain ring R that constitutes the first chain 110, the second chain 120, and the third chain 130 will be described. As shown in Figures 5(a) and 5(b) and Figure 6, the chain ring R is a metal annular member having a substantially rectangular hollow portion Rb, and is composed of four corners Rg, Rh, Ri, and Rj, and four connecting portions that connect adjacent corners. Each of the four connecting portions has a substantially rectangular parallelepiped shape, and connects adjacent corners in a straight line.

[0039] In addition, the chain ring R has an outer periphery Ra and an inner periphery Rc that are approximately rectangular when viewed from above, and an outer periphery Rd when viewed from the side and an outer periphery Re when viewed from the rear are also approximately rectangular, and further, the cross section Rf is also approximately rectangular.

[0040] In this embodiment, the inner length RP of the chain ring R is about 18 mm, the inner width RW is about 7 mm, and the diameter RD of the connection part is about 5 mm, as shown in Fig. 5. Note that the size of the chain ring R is not limited to these values ​​and can be any value.

[0041] The tire chain 10 according to the present embodiment includes a belt side cover 300 that covers the belt support plate 220 and an apparatus side cover 400 that covers the apparatus support plate 240. In addition, the belt side cover 300 in this embodiment corresponds to a first cover part of the present invention, and the device side cover 400 corresponds to a second cover part of the present invention.

[0042] The belt side cover 300 includes a cover main body portion 310 and two belt side ring cover portions 311, 312 located on both the left and right sides of the cover main body portion 310 (left and right in FIG. 7(b)).

[0043] As shown in Fig. 7, the cover main body 310 is a cover-like member that opens downward (downward in Fig. 7(b)). When the belt side cover 300 is attached to the belt support plate 220, the back surface 220a and the side surface 220b of the belt support plate 220 are covered by the cover main body 310, and the front surface 220c of the belt support plate 220 (the surface opposite to the back surface 220a of the belt support plate 220) is exposed below the cover main body 310 (see Fig. 3). The back surface 220a of the belt support plate 220 is the surface that faces the sidewall surface T2 of the tire T when the tire chain 10 is attached to the tire T (see Fig. 14).

[0044] 7(b), the belt side cover 300 is provided with a cutout portion 310a having a substantially rectangular shape in a plan view at a position corresponding to the belt hole 221a of the belt support plate 220 when the belt side cover 300 is attached to the belt support plate 220. The cutout portion 310a is provided to prevent the movable area of ​​the fixed belt 210, which is rotatably connected to the belt support plate 220, from being restricted by the belt side cover 300 (see FIGS. 1 and 2).

[0045] 7(b), the cover main body 310 is provided with two protrusions 320a, 320b for attaching the belt side cover 300 to the belt support plate 220. The protrusions 320a, 320b fit into mounting holes 223a, 223b provided in the belt support plate 220, thereby attaching the belt side cover 300 to the belt support plate 220. In this embodiment, the belt side cover 300 is fixed to the belt support plate 220 by performing a riveting process to crush the tips of the protrusions 320a, 320b fitted into the mounting holes 223a, 223b.

[0046] The belt side ring cover parts 311, 312 are cover-like members that cover a part of the hook ring F connected to the belt support plate 220 (see Figs. 2, 4 and 7). The belt side ring cover parts 311, 312 are provided on both the left and right sides of the cover main body part 310 at positions that correspond to the ring holes 222a, 222b of the belt support plate 220 when the belt side cover 300 is attached to the belt support plate 220.

[0047] The belt side ring cover parts 311, 312 are provided so as to be located above the top surface of the cover body part 310. The belt side ring cover parts 311, 312 are provided with front openings 311a, 312a that open forward in Fig. 7(b) and downward openings 311b, 312b that open downward in Fig. 7(b), respectively.

[0048] Further, on the rear side (the rear side in FIG. 7(b)) of the belt side ring cover parts 311, 312, inclined surfaces 311c, 312c are provided which are gradually inclined downward toward the rear.

[0049] In addition, the belt side cover 300 in this embodiment is made of synthetic resin such as plastic, and the cover main body 310 has a total length CBL1 of about 45 mm, a width CBW1 of about 25 mm, and a thickness of about 5 mm. The belt side ring cover parts 311, 312 have a total length CSL of about 25 mm, a width CSW of about 25 mm, and a height CSD of about 7 mm. The sizes of the cover main body 310 and the belt side ring cover parts 311, 312 are not limited to these and can be any values.

[0050] The device side cover 400 includes a cover main body 410 and two device side ring cover parts 412, 413 located on both the left and right front sides of the cover main body 410 (the left and right front sides in FIG. 9(b)).

[0051] The cover main body 410 is a cover-like member that opens downward (downward in FIG. 9(b)) as shown in FIG. 4 and FIG. 9. When the device-side cover 400 is attached to the device support plate 240, the back surface 240a and the side surface 240b of the device support plate 240, and a part of the base 231 that is integrally provided with the device support plate 240 are covered by the cover main body 410, and the front surface 240c of the device support plate 240 (the surface opposite to the back surface 240a of the device support plate 240) is exposed below the cover main body 410 (see FIG. 3, FIG. 9(a), etc.).

[0052] Further, the cover main body 410 is provided with two protrusions 411a, 411b for attaching the device-side cover 400 to the device support plate 240. The device-side cover 400 is attached to the device support plate 240 by fitting the protrusions 411a, 411b into mounting holes 242a, 242b provided in the device support plate 240. In this embodiment, the device-side cover 400 is fixed to the device support plate 240 by performing riveting to crush the tips of the protrusions 411a, 411b fitted into the mounting holes 242a, 242b.

[0053] The device side ring cover parts 412, 413 are cover-like members that cover a part of the hook ring F connected to the device support plate 240. The device side ring cover parts 412, 413 are provided on both the left and right front sides of the cover main body part 410 at positions that correspond to the ring holes 241a, 241b of the device support plate 240 when the device side cover 400 is attached to the device support plate 240.

[0054] 2, 4, and 9, the device-side ring cover parts 412, 413 are provided so as to be located above the top surface of the cover body part 410. The device-side ring cover parts 412, 413 are provided with front openings 412a, 413a that open forward in Fig. 9(b) and downward openings 412b, 413b that open downward in Fig. 9(b), respectively.

[0055] Further, on the rear side (the rear side in FIG. 9(b)) of the device-side ring cover parts 412, 413, there are provided inclined surfaces 412c, 413c that are gradually inclined downward toward the rear.

[0056] Similarly to the belt side cover 300, the device side cover 400 in this embodiment is made of synthetic resin such as plastic, and the cover body 410 has a total length CBL2 of about 45 mm and a width CBW2 of about 150 mm. The device side ring cover parts 412, 413 have substantially the same sizes as the belt side ring cover parts 311, 312. The sizes of the cover body part 410 and the device side ring cover parts 412, 413 are not limited to these, and can be any value. The device side cover 400 may be configured only by the cover body part 410 without including the device side ring cover parts 412, 413. The device side cover 410 (the cover body part 410 when configured only by the cover body part 410) may be configured by a colorless and transparent member so that the winding device 230 can be seen through the device side cover 410. In addition, the device side cover 400 (the cover main body portion 410 when configured only with the cover main body portion 410) may be configured so that the end portion opposite the mounting side end is freely rotatable around the mounting side end portion as an axis.

[0057] Next, a method for attaching (mounting) the tire chain 10 configured as described above to the tires T in a stacked state will be described with reference to FIGS.

[0058] First, as shown in Figures 10, 13, and 14, the fixed belt 210, the belt support plate 220, the winding device 230, and the device support plate 240 are each placed on the sidewall surface T2 of the stacked tire T. At this time, the belt support plate 220 and the device support plate 240 are each placed so that the belt side cover 300 and the device side cover 400 face (contact) the sidewall surface T2 of the tire T.

[0059] When the fixed belt 210 and the belt support plate 220, and the winding device 230 and the device support plate 240 are arranged on the sidewall surface T2 as described above, the first chain 110 and the second chain 120 are arranged so as to span the tread surface T1 from one side of the sidewall surface T2 to the other side. Also, the third chain 130 is arranged so as to span the tread surface T1 from the first chain 110 to the second chain 120.

[0060] 13(b), one end of the fixing belt 210 (the end not connected to the belt support plate 220) is passed through a hole H1 provided in the tire wheel H. Then, the one end of the fixing belt 210 passed through the hole H1 of the tire wheel H is passed through a slit portion 232c of the belt winding shaft 232, thereby disposing the fixing belt 210 inside the winding device 230 (see FIG. 11(a)).

[0061] Thereafter, by repeatedly rotating the handle portion 233 of the winding device 230, the belt winding shaft 232 rotates as described above, and the fixed belt 210 arranged in the winding device 230 is wound around the rotating belt winding shaft 232 (see FIG. 12). As a result, the tire T and the tire wheel H are tightened by the first chain 110, the second chain 120, and the fixed belt 210, and the first chain 110, the second chain 120, and the third chain 130 are fixed onto the tread surface T1, and the tire chain 10 is attached to the tire T. Then, by driving the car in this state, it is possible to escape from the stuck state.

[0062] As described above, the chain 100 of this embodiment can be attached to only a portion of the tread surface T1 of the tire T, rather than covering the entire tread surface T1 (entire circumference), so that the tire chain 10 can be easily attached to the tire T even when it is stuck.

[0063] In addition, in this embodiment, the first chain 110, the second chain 120, and the third chain 130 connecting the first chain 110 and the second chain 120 are arranged on the tread surface T1, so that the resistance value of the tire chain 10 against the road surface is larger than when only the first chain 110 and the second chain 120 are arranged on the tread surface T1. This improves the grip force against the road surface, making it easier to escape from a stuck state. In addition, by providing the third chain 130, it is possible to prevent the first chain 110 and the second chain 120 from moving and widening the gap between these chains when the tire chain 10 is attached to the tire T, so that the attachment of the tire chain 10 can be improved.

[0064] In addition, in this embodiment, a belt side cover 300 that covers the belt support plate 220, and an equipment side cover 400 that covers the device support plate 240 and the base 231 of the winding device 230 are provided, so that when the tire chain 10 is fixed, the belt support plate 230, the device support plate 240, and the base 231 can be prevented from directly contacting the sidewall surface T2 of the tire T or the tire wheel H, and damage to the sidewall surface T2 of the tire T or the tire wheel H due to the use of the tire chain 10 can be prevented.

[0065] In addition, in this embodiment, the tire chain 10 is attached to the tire T by winding up the fixing belt 210 using a winding device 230 having a ratchet mechanism, thereby reducing the burden of attaching the tire chain 10.

[0066] In this embodiment, chain A111, chain B112, chain C121 and chain D122 are each composed of seven chain rings R, and the third chain 130 is composed of three chain rings, but the number of chain rings R constituting each chain is not limited to these and can be any number.

[0067] In addition, in this embodiment, there are two chains 100 arranged across the tread surface T1 of the tire T, a first chain 110 and a second chain 120, but the number of chains 100 is not limited to this and can be any number.

[0068] In addition, in this embodiment, the chain 100 connecting the first chain 110 and the second chain 120 is the single third chain 130, but the number of such chains is not limited to this and can be any number.

[0069] Although the present invention has been described in the above embodiment, it is not limited to this embodiment. Modifications, variations, and changes in the combination of each component are possible within the scope of the invention. [Explanation of symbols]

[0070] T Tire T1 tread surface T2 Sidewall surface H Tire Wheel H1 Tire wheel hole 10 Tire chains 110 First Chain 120 2nd Chain 130 3rd Chain 210 Fixed Belt 220 Belt support plate 230 Winding device 240 Equipment support plate

Claims

1. A first fixing portion disposed on one of opposing sidewall surfaces of the tire; A second fixing portion disposed on the other side; a first chain and a second chain arranged to bridge the tread surface of the tire from one sidewall surface to the other sidewall surface, one end of which is connected to the first fixed part and the other end of which is connected to the second fixed part; the first fixing portion includes a belt portion that is passed through a hole that penetrates the tire wheel, The second fixing portion includes a ratchet mechanism that winds up the belt portion, This tire chain is characterized in that the belt portion passed through a hole in the tire wheel is wound up by the ratchet mechanism of the second fixing portion, thereby tightening the tire and tire wheel with the first chain and the second chain and the belt portion, and fixing the first chain and the second chain to the tire.

2. 2. The tire chain according to claim 1, further comprising a third chain disposed on the tread surface of the tire, one end of which is connected to the first chain and the other end of which is connected to the second chain.

3. A first cover portion that covers the first fixed portion; A second cover portion that covers the second fixing portion, 3. The tire chain according to claim 1, wherein the first cover portion and the second cover portion are in contact with a sidewall surface when the first chain and the second chain are fixed to the tire.

Images