JP7148894B2 - spare tire carrier - Google Patents

Description

The present disclosure relates to spare tire carriers.

Patent Document 1 describes a spare tire carrier attached to a chassis frame via a support bracket. The spare tire carrier consists of a carrier body fixed to a support bracket, a chain provided so as to be movable in the vertical direction of the vehicle by driving the carrier body, and a tire hanger that engages the spare tire at the lower end of the chain. It is configured. The tire hanger has an engagement claw that engages in the radial direction with the inner peripheral edge of the center hole of the disk wheel of the spare tire. The engagement claw functions to eliminate relative positional deviation in the radial direction between the tire hanger and the disc wheel. Further, the tire hanger is provided with a bolt, which is a member for preventing displacement, at a position outside the engaging claw. The bolt is inserted through a hub bolt mounting hole provided in the disc wheel and a first engagement hole provided in the support bracket, and a nut is screwed onto the tip of the bolt and tightened together to secure the support bracket and the tire hanger. It prevents disc wheel slippage and damage to the disc wheel surface.

JP 2013-189162 A

By the way, instead of rotating the disc wheel of the spare tire with respect to the support bracket (bracket), excessive rotation of the tire hanger (tire locking member) with respect to the carrier body (chain winding mechanism) is prevented to prevent damage due to twisting of the chain. sometimes you want to In this case, as in the spare tire carrier described in Patent Document 1, an engaging claw for preventing relative positional deviation of the spare tire from the disk wheel in the radial direction and the disk wheel with respect to the bracket and the tire locking member are provided. A tire locking member provided with a bolt for preventing misalignment may have a complicated structure due to the large number of parts. tightening, the work may become complicated.

Accordingly, an object of the present disclosure is to provide a spare tire carrier that can easily hold a spare tire with a simple structure and that can prevent damage due to twisting of the chain.

In order to solve the above-described problems, a first aspect of the present invention is a spare tire carrier that holds a spare tire having a disc wheel with a hub hole formed in it at a predetermined holding position by lifting it upward toward a vehicle body frame. , a chain winding mechanism, a tire locking member, and a first rotation restricting portion. The chain winding mechanism is fixed to the vehicle body frame and can wind up the chain. The tire locking member is provided at the tip of the chain, and supports the disc wheel from below by coming into contact with the lower surface of the disc wheel while the chain is inserted through the hub hole of the disc wheel. The first rotation restricting portion is arranged above the upper surface of the disc wheel of the spare tire held at the predetermined holding position and fixed to the vehicle body frame. The tire locking member is at least capable of engaging with the inner peripheral edge of the hub hole by protruding upward from a region of the upper surface of the tire locking member within the hub hole of the disc wheel in the disc wheel supporting state in which the disc wheel is supported from below. It has a pair of protrusions. At least one of the pair of protruding portions of the tire locking member is a second rotation restricting portion that protrudes upward from the upper surface of the disc wheel in the disc wheel supported state. The first rotation restricting portion is arranged on a locus of rotation about the chain of the second rotation restricting portion of the tire locking member in the holding state.

In the above configuration, the pair of protruding portions of the tire locking member extend upward from the region within the hub hole of the disc wheel on the upper surface of the tire locking member in the disc wheel supporting state in which the disc wheel is supported from below by the tire locking member. and can be engaged with the inner peripheral edge of the hub hole, restricting the relative movement in the radial direction (the direction crossing the vertical direction) of the tire locking member and the disc wheel in the disc wheel supported state. can be done. At least one of the pair of projecting portions of the tire locking member projects upward from the upper surface of the disc wheel in the disc wheel supported state as a second rotation restricting portion, and the first rotation restricting portion holds the spare tire. It is arranged on the locus of rotation centering on the chain of the second rotation restricting portion of the tire locking member in the state. Therefore, for example, when the spare tire in the held state comes into contact with a protrusion on the road surface while the vehicle is running, the spare tire rotates around the chain, and the tire locking member rotates as the spare tire rotates. Also, since the second rotation restricting portion of the tire locking member can be brought into contact with the first rotation restricting portion, excessive rotation of the tire locking member with respect to the chain winding mechanism fixed to the vehicle body frame can be prevented. , the breakage of the spare tire carrier due to twisting of the chain can be prevented.

In this way, the tire locking member can be prevented from excessively rotating with respect to the chain winding mechanism by utilizing the pair of protrusions that restrict the relative movement of the tire locking member and the disc wheel in the radial direction. Therefore, the spare tire can be easily held with a simple structure, and damage to the spare tire carrier due to twisting of the chain can be prevented.

A second aspect of the present invention is the spare tire carrier of the first aspect, comprising a bracket. The bracket is fixed to the vehicle body frame and supports the chain winding mechanism. The first rotation restricting portion is provided on at least one of the bracket and the chain winding mechanism.

In the above configuration, the first rotation restricting portion is provided on at least one of the bracket for supporting the chain winding mechanism and the chain winding mechanism. Therefore, since it is not necessary to provide a special member for preventing rotation of the tire locking member, it is possible to easily hold the spare tire with a simple structure and prevent damage to the spare tire carrier due to twisting of the chain. can be prevented.

According to the present disclosure, it is possible to easily hold a spare tire with a simple structure, and prevent damage to the spare tire carrier due to twisting of the chain.

1 is a side view of a spare tire carrier according to one embodiment dismantling of the present invention; FIG. Fig. 3 is a rear view of the spare tire carrier; Fig. 2 is a plan view of the spare tire carrier; It is a perspective view of a hanging plate. It is explanatory drawing of a hanging plate and a bracket. It is explanatory drawing which shows the modification of a hanging plate, (a) shows the state seen from upper direction, (b) shows the state seen from diagonally upper direction, respectively.

An embodiment of the present invention will be described below with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction when the vehicle faces forward.

As shown in FIG. 1, a spare tire carrier 10 according to the present embodiment is fixed to a vehicle body frame 2 of a vehicle 1, and holds a spare tire 3 of the vehicle 1 at a predetermined holding position (the spare tire 3 shown in FIG. 1). position). The body frame 2 includes a pair of left and right side members 4 (the left side member 4 is shown in FIG. 1) extending in the front-rear direction on both sides in the vehicle width direction of the vehicle 1, and a pair of side members 4 extending in the vehicle width direction. It has a plurality of cross members (not shown) that connect the left and right side members 4 to each other. A spare tire carrier 10 according to this embodiment is fixed to a side member 4 of a vehicle body frame 2 .

The spare tire 3 has a disc wheel 5 and a tire body 6 attached to the disc wheel 5 . The disk wheel 5 has a rim portion 5a that supports the tire body 6 and a disk portion 5b that is attached to a hub (not shown) on the vehicle body side. The disc portion 5b of the disc wheel 5 is provided with a hub hole 7 (see FIG. 3) through which the hub is inserted.

As shown in FIGS. 1 to 3, the spare tire carrier 10 includes a pair of front and rear brackets 11 fixed to the side member 4, a chain winding mechanism 12 fixed to the front and rear brackets 11, and a suspension plate (tire locking mechanism). member) 13.

The front and rear brackets 11 integrally have a vertical portion 11a extending substantially vertically and a horizontal portion 11b extending substantially horizontally outward in the vehicle width direction from the lower end of the vertical portion 11a. The upper side of the vertical portion 11a is fixed to the vehicle width direction outer side surface 4a of the side member 4 while being spaced apart in the front-rear direction. The vertical portion 11 a has an upper portion fixed in surface contact with the vehicle width direction outer surface 4 a of the side member 4 , and a lower portion extending downward from the lower surface of the side member 4 . The horizontal portion 11b is arranged below the lower surface of the side member 4 . More specifically, the vertical portion 11a and the horizontal portion 11b are bent outward in the vehicle width direction from the mounting plate portion 14 substantially perpendicular to the vehicle width direction and from the front or rear edge of the mounting plate portion 14. Mounting plate portions (front and rear mounting plate portions) 14 of the front and rear brackets 11 are superimposed on the vehicle width direction outer side surface 4a of the side member 4 from the vehicle width direction outer side and fastened and fixed. be done. An upper facing plate portion (front upper facing plate portion) 15 of the front bracket 11 is bent from the rear end edge of the mounting plate portion 14 to form an upper facing plate portion (rear upper facing plate portion) of the rear bracket 11 . 15 is bent from the front edge of the upper facing plate portion 14, and the front and rear upper facing plate portions 15 are spaced apart in the front-rear direction and face each other. The horizontal portion 11b includes a lower facing plate portion 16 continuously extending outward in the vehicle width direction from the lower end portion of the upper facing plate portion 15, and a contact plate portion 17 bending forward or rearward from the lower end edge of the lower facing plate portion 16. and The front and rear lower facing plate portions 16 face each other while being spaced apart in the front-rear direction, and the contact plate portion (front contact plate portion) 17 of the front bracket 11 is bent forward to contact the rear bracket 11 . A plate portion (rear contact plate portion) 17 is bent rearward.

The chain winding mechanism 12 includes a rotating member 18 that can be rotated by a handle (not shown), and a pair of left and right fixing members 19 that rotatably support the rotating member 18 and fix the rotating member 18 to the front and rear brackets 11 . It is arranged between the horizontal portions 11b of the front and rear brackets 11 and fixed to the horizontal portions 11b. The rotating member 18 is supported by the left and right fixed members 19 so as to be rotatable around an axis extending in the vehicle width direction. is omitted.) is wrapped. The left and right fixed members 19 are formed in a plate shape that intersects the vehicle width direction, and are provided on the left and right sides of the rotating member 18 . Both front and rear end portions of the fixing member 19 are fixed to the horizontal portions 11 b of the front and rear brackets 11 . When the chain winding mechanism 12 is fixed to the front and rear brackets 11, the lower surface of the chain winding mechanism 12 (the lower surface of the left and right fixing members 19) is the lower surface 21 of the horizontal portion 11b of the front and rear brackets 11 (hereinafter simply referred to as the front and rear brackets 11). (referred to as the lower surface 21 of the bracket 11 of the bracket 11). The chain winding mechanism 12 can wind up the chain 20 or loosen the chain 20 and extend it downward by rotating the rotating member 18 with a handle (not shown). The structure of the chain hoisting mechanism 12 is not limited to the above, and various structures that can hoist the chain 20 or loosen the chain 20 and extend it downward can be applied.

As shown in FIGS. 1, 2 and 4, the hanging plate 13 includes a main body portion 22 having a U-shaped cross section and a pair of protruding plate portions (protruding portions, second rotational 24 and attached to the lower end (tip) 20 a of the chain 20 extending downward from the chain winding mechanism 12 . The body portion 22 is formed by a plate-like member to have a U-shaped cross section that opens downward, and extends linearly in a predetermined direction. The length of the body portion 22 in the predetermined direction is longer than the inner diameter of the hub hole 7 of the disc wheel 5 of the spare tire 3 . A lower end portion 20a of the chain 20 is connected to the center portion 25 of the body portion 22 in the predetermined direction. The chain 20 is inserted through the hub hole 7 of the disk wheel 5, the body portion 22 is arranged below the disk portion 5b of the disk wheel 5, and the center portion 25 of the body portion 22 is arranged in the center of the hub hole 7 ( 4), both end portions 27 of the main body portion 22 in the predetermined direction (hereinafter simply referred to as both end portions 27 of the main body portion 22) are aligned with the lower surface 26 of the disc portion 5b of the disc wheel 5 (hereinafter simply disc). ) of the wheel 5). In this state, when the chain hoisting mechanism 12 winds up the chain 20 to hoist the hanging plate 13 , both ends 27 of the main body 22 come into contact with the lower surface 26 of the disk wheel 5 , and the hanging plate 13 locks the disk wheel 5 . It will be in a state of supporting it from below (hereinafter referred to as a disk wheel supporting state). The pair of protruding plate portions 24 are formed in a region 28 within the hub hole 7 of the disc wheel 5 in the disc wheel supported state on the upper surface 23 of the body portion 22 (the region radially inside the inner peripheral edge 8 of the hub hole 7 in FIG. 4). are arranged at both ends of the predetermined direction. The pair of protruding plate portions 24 are formed in a plate shape perpendicular to the extension direction (the predetermined direction) of the main body portion 22, and stand upright on both sides of the main body portion 22 in the predetermined direction so as to face each other. The pair of protruding plate portions 24 are engaged with the inner peripheral edge 8 of the hub hole 7 of the disc wheel 5 from the inside in the radial direction while the disc wheel is being supported. direction). The upward projection length of the pair of projecting plate portions 24 is the length of projection upward beyond the upper surface 29 of the disk portion 5b of the disk wheel 5 (hereinafter simply referred to as the upper surface 29 of the disk wheel 5) in the disk wheel supported state. is set to That is, the upward projection length of the pair of projecting plate portions 24 is set longer than the plate thickness of the disk portion 5 b of the disk wheel 5 . When the hanging plate 13 is lifted by the chain hoisting mechanism 12 in a state in which the disk wheel is supported, the spare tire 3 is lifted upward toward the vehicle body frame 2 while the disk wheel 5 is supported from below by the hanging plate 13, and the disk wheel is lifted. 5 reaches the predetermined holding position where the upper surface 29 of the bracket 11 (the lower surface of the contact plate portion 17) is in contact with the lower surface 21 of the front and rear brackets 11, and is held at the predetermined holding position (FIGS. 1 and 3). 2). That is, the front and rear brackets 11 are arranged above the upper surface 29 of the disk wheel 5 of the spare tire 3 in the held state.

As shown by solid lines in FIG. 5 , in the held state, the hanging plate 13 extends in the same direction as the horizontal portions 11b (the vehicle width direction in this embodiment) between the horizontal portions 11b of the front and rear brackets 11 when viewed from above. ing. Further, as shown in FIG. 1, in the holding state, the pair of protruding plate portions 24 of the hanging plate 13 protrude upward from the lower surfaces 21 of the front and rear brackets 11 . As shown in FIG. 5, the horizontal portions 11b of the front and rear brackets 11 intersect with the locus of rotation of the pair of protruding plate portions 24 around the central portion 25 of the hanging plate 13 (indicated by the dashed line 30 in FIG. 5). It has a region (first rotation restricting portion) 31 (hereinafter referred to as a stopper region 31). The stopper regions 31 are provided on the mutually facing sides of the horizontal portions 11b of the front and rear brackets 11 (the rear surface sides of the horizontal portions 11b of the front brackets 11 (front lower facing plate portion 16), and on the horizontal portions 11b of the rear brackets 11. is a predetermined area on the front side of the (lower facing plate portion 16 on the rear side). The length of the horizontal portion 11b of the front bracket 11 in the vehicle width direction is set to such a length that two stopper regions 31 are present in each of the horizontal portions 11b of the front and rear brackets 11 .

In the spare tire carrier 10 configured as described above, the pair of protruding plate portions 24 of the hanging plate 13 are engaged with the inner peripheral edge 8 of the hub hole 7 of the disc wheel 5 from the inside in the radial direction while supporting the disc wheel. The disk wheel 5 and the hanging plate 13 are restrained from moving relative to each other in the direction crossing the vertical direction.

The pair of protruding plate portions 24 of the hanging plate 13 protrude above the upper surface 29 of the disc wheel 5 in the disc wheel supporting state, and protrude above the lower surfaces 21 of the front and rear brackets 11 in the holding state. The horizontal portion 11b of the front and rear brackets 11 has a stopper region 31 that intersects with the rotation trajectory 30 of the pair of protruding plate portions 24 centering on the central portion 25 of the suspension plate 13 . For this reason, for example, when the vehicle 1 is running, the spare tire 3 in the held state comes into contact with a protrusion or the like on the road surface, causing the spare tire 3 to rotate about the chain 20. As the spare tire 3 rotates, the suspension plate 13 rotates around the chain 20, the horizontal portions 11b of the front and rear brackets 11 are kept in contact with the pair of projecting plate portions 24 of the hanging plate 13 until the pair of projecting plate portions 24 of the hanging plate 13 come into contact with the stopper region 31. 24, and restricts the movement of the pair of projecting plate portions 24 of the hanging plate 13 when the pair of projecting plate portions 24 of the hanging plate 13 come into contact with the stopper region 31. As shown in FIG. Thus, the contact between the pair of projecting plate portions 24 of the suspension plate 13 and the stopper regions 31 of the front and rear brackets 11 prevents excessive rotation of the suspension plate 13 with respect to the chain winding mechanism 12 fixed to the vehicle body frame 2 side. Therefore, damage to the spare tire carrier 10 due to twisting of the chain 20 can be prevented.

Also, in order to prevent excessive rotation of the hanging plate 13 with respect to the chain winding mechanism 12, a pair of protruding plate portions 24 of the hanging plate 13 restrict relative movement in the radial direction between the hanging plate 13 and the disk wheel 5. is used, there is no need to provide the suspension plate 13 with a dedicated component for preventing excessive rotation of the suspension plate 13 with respect to the chain winding mechanism 12. - 特許庁

A stopper region (first rotation restricting portion) 31 for restricting the rotational movement of the pair of projecting plate portions 24 of the hanging plate 13 with respect to the chain winding mechanism 12 is provided for fixing the chain winding mechanism 12 to the vehicle body frame 2 . Since it is provided on the bracket 11, there is no need to provide a dedicated member (a member fixed to the vehicle body frame 2 side) for preventing the suspension plate 13 from rotating.

Therefore, according to this embodiment, the spare tire 3 can be easily held with a simple structure, and damage to the spare tire carrier 10 due to twisting of the chain 20 can be prevented.

In this embodiment, the substantially L-shaped bracket 11 integrally including the vertical portion 11a and the horizontal portion 11b is provided. Various shapes that can be fixed to the vehicle body frame 2 can be applied.

In addition, in the present embodiment, the chain winding mechanism 12 is fixed to the vehicle body frame 2 using a pair of front and rear brackets 11, but the present invention is not limited to this. For example, one bracket or three or more brackets may be used. Alternatively, the chain hoisting mechanism 12 may be fixed to the vehicle body frame 2. Alternatively, the chain winding mechanism 12 may be directly fixed to the vehicle body frame 2 without using a bracket.

Further, in the present embodiment, the stopper regions (first rotation restricting portions) 31 for restricting the rotational movement of the pair of protruding plate portions 24 of the hanging plate 13 are provided in the pair of front and rear brackets 11, but the present invention is not limited to this. not something. For example, the chain winding mechanism 12 (for example, the fixing member 19) may be provided with a first rotation restricting portion for restricting the rotational movement of the pair of protruding plate portions 24 of the hanging plate 13, or the chain winding mechanism 12 and bracket 11 may be provided. Alternatively, a dedicated member (a member fixed to the vehicle body frame 2 side) for preventing rotation of the hanging plate 13 may be provided in the spare tire carrier 10, and the dedicated member may be provided with the first rotation restricting portion.

Further, in the present embodiment, the body portion 22 of the suspension plate 13 is formed with a plate-like member to have a U-shaped cross section that opens downward, but the shape of the body portion 22 is not limited to this. Any shape is acceptable as long as it can be inserted into the hub hole 7 of the disk wheel 5 and can support the disk wheel 5 from below.

Further, in the present embodiment, the pair of protruding plate portions (protruding portions) 24 protrude upward from the upper surface 23 of the body portion 22 of the hanging plate 13, but the protruding portions are not limited to a plate shape. , a rod-shaped protrusion, or a protrusion formed by forming a portion of the upper plate of the main body 22 in a convex shape so as to protrude upward.

In addition, in the present embodiment, the pair of projecting plate portions 24 of the hanging plate 13 are formed in a plate shape perpendicular to the extending direction of the main body portion 22, but the present invention is not limited to this. As shown in a) and FIG. 6(b), a pair of projecting plate portions (projecting portion, second rotation restricting portion) 34 of the hanging plate 13 are curved along the inner peripheral edge 8 of the hub hole 7 of the disk wheel 5. It may be formed in a plate shape that stands up from the upper surface 23 of the body portion 22 in the state where it is folded.

Further, in this embodiment, the lengths of both the pair of protruding plate portions (protruding portions) 24 of the suspension plate 13 are set to a length that protrudes above the upper surface 29 of the disc wheel 5 in the disc wheel supported state. However, one of the pair of protruding plate portions (protruding portions) 24 (second rotation restricting portion) is set to a length that protrudes upward from the upper surface 29 of the disc wheel 5 in the disc wheel supported state, and the other is set to the disc wheel. The length may be set so as not to protrude above the upper surface 29 of the disc wheel 5 in the supported state.

In the present embodiment, the suspension plate 13 in the held state is arranged between the horizontal portions 11b of the front and rear brackets 11 so as to extend in the same direction (vehicle width direction) as the horizontal portions 11b when viewed from above. The direction in which the suspension plate 13 extends is not limited to this, and for example, the suspension plate 13 in the held state may be arranged so as to extend in the direction intersecting the horizontal portion 11b (the front-rear direction). In this case, the pair of protruding plate portions 24 of the suspension plate 13 are positioned outside the horizontal portions 11b of the front and rear brackets 11 (in front of the horizontal portion 11b of the front bracket 11 and behind the horizontal portion 11b of the rear bracket 11). The stopper area 31 intersecting with the rotation trajectory 30 of the pair of protruding plate portions 24 of the suspension plate 13 is positioned outside the horizontal portion 11b of the front and rear brackets 11 (in front of the horizontal portion 11b of the front bracket 11). side, and the rear surface side of the horizontal portion 11b of the bracket 11 on the rear side).

Moreover, in the present embodiment, the spare tire carrier 10 holding one spare tire 3 was illustrated, but the spare tire carrier 10 holding a plurality of spare tires 3 in a vertically stacked state may be used. In this case, the upward protrusion length of the pair of protruding plate portions 24 of the suspension plate 13 is the upper surface 29 of the disc wheel 5 of the spare tire 3 positioned at the uppermost side among the plurality of spare tires 3 in the disc wheel supported state. It is set to a length that protrudes upward.

Also, in this embodiment, the spare tire carrier 10 is fixed to the side member 4 of the vehicle body frame 2, but the present invention is not limited to this, and the spare tire carrier 10 is fixed to a cross member (not shown) of the vehicle body frame 2. You may

Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can be appropriately modified without departing from the scope of the present invention. In other words, all other embodiments, examples, operation techniques, etc. made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention.

A spare tire carrier according to the present disclosure can be widely applied to vehicles that lift and hold a spare tire.

1: Vehicle 2: Body frame 3: Spare tire 5: Disc wheel 7: Hub hole 8: Inner peripheral edge of hub hole 10: Spare tire carrier 11: Front and rear pair of brackets 12: Chain winding mechanism 13: Hanging plate (tire locking Element)
14: Mounting plate portion 15: Upper facing plate portion 16: Lower facing plate portion 17: Abutting plate portion 20: Chain 20a: Lower end (tip) of chain
22: Body portion of hanging plate 23: Top surface of body portion (top surface of tire locking member)
24, 34: a pair of projecting plate portions of the suspension plate (projecting portion, second rotation restricting portion)
26: Lower surface of disk wheel 28: Area in hub hole of disk wheel 29: Upper surface of disk wheel 31: Stopper area of bracket (first rotation restricting portion)

Claims (2)

A spare tire carrier that holds a spare tire having a disc wheel with a hub hole formed in it at a predetermined holding position by lifting the spare tire to the vehicle body frame side,
a chain hoisting mechanism fixed to the vehicle body frame and capable of hoisting a chain;
a tire locking member that is provided at the tip of the chain and supports the disc wheel from below by coming into contact with the lower surface of the disc wheel while the chain is inserted through the hub hole of the disc wheel;
a first rotation restricting portion disposed above an upper surface of the disk wheel of the spare tire held at the predetermined holding position and fixed to the vehicle body frame;
In a disc wheel supporting state in which the disc wheel is supported from below, the tire locking member protrudes upward from a region of the upper surface of the tire locking member within the hub hole of the disc wheel to extend from the inner peripheral edge of the hub hole. having at least one pair of protrusions engageable with the
at least one of the pair of projecting portions of the tire locking member is a second rotation restricting portion projecting upward from the upper surface of the disc wheel in the disc wheel supported state;
The spare tire carrier, wherein the first rotation restricting portion is arranged on a locus of rotation about the chain of the second rotation restricting portion of the tire locking member in the holding state. A spare tire carrier according to claim 1, comprising:
a bracket fixed to the vehicle body frame and supporting the chain winding mechanism;
The spare tire carrier, wherein the first rotation restricting portion is provided on at least one of the bracket and the chain winding mechanism.

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