JPH08258756A - Spare tire holding mechanism - Google Patents

Abstract

PURPOSE: To provide a spare tire holding mechanism which is operable by a winding mechanism. CONSTITUTION: A tyre spare holding mechanism comprises a stiffening plate 13 brought into contact with the wheel part of a tire; a hook 14 erected approximately at the central part of the stiffening plate 13; a winding mechanism having a wire 17 engaged with the hook 14; and a fixing mechanism to securely hold the wound hook 14. This constitution performs mounting and demounting of a spare tire through operation at a driver's seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spare tire holding mechanism capable of automatically attaching or removing a spare tire for a truck or a special vehicle to a part of a vehicle body.

[0002]

2. Description of the Related Art Conventionally, various types of spare tire holding mechanisms for trucks have been proposed. For example, there has been a type in which a holding mechanism for forming a pantograph is attached below the loading platform of a truck. In addition, there was a type in which a spare tire was stored by operating with the foot.

[0003]

However, in the conventional spare tire holding mechanism, a spare tire is attached,
It is troublesome to remove the tire, and it was difficult to get out of the car and remove the spare tire to replace the tire especially when it is extremely cold in winter.

Further, since the spare tire of the truck is heavy, the work of mounting and removing the spare tire is troublesome.

In view of the conventional problems, an object of the present invention is to provide a spare tire holding mechanism which is easy to mount and remove and which is excellent in safety.

[0006]

In order to achieve the above object, according to the present invention, there is provided a backing plate to be brought into contact with a wheel portion of a tire, a hook standing upright substantially in the center of the plate, A winding mechanism including a wire that engages with the hook and a fixing mechanism that holds and holds the wound hook are provided.

Further, the hoisting mechanism can be operated in a driver's seat, and a plurality of hooks can be operated by a switching mechanism. Further, the winding mechanism is characterized by including a torque control mechanism and stopping the winding when a constant torque value is reached.

[0008]

Since the spare tire holding mechanism according to the present invention can be operated from the driver's seat by releasing the fixing device, it can be safely operated even on a rainy day or winter.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 is a side view of a truck equipped with a spare tire holding mechanism according to an embodiment of the present invention, FIG. 2 is a side view showing a fixing mechanism of the spare tire holding mechanism,
FIG. 3 is an explanatory view showing a hook member of a fixing mechanism of the spare tire holding mechanism, and FIG. 4 is an explanatory view showing a handle of the fixing mechanism of the spare tire holding mechanism.

The spare tire holding mechanism is operated by an operating portion 11 provided in the driver's seat 10 and is erected substantially at the center of a backing plate 13 which is brought into contact with a wheel portion of a spare tire 16 by a hoisting mechanism 12. Pull up the hook 14. Also,
The operation unit 15 is also arranged on the cargo bed of the truck.
However, the operation section 15 can be operated only when the operation section 11 is operated so that the rear section can also be operated. Therefore, the spare tire 16 cannot be removed by operating only the operation unit 15 from the outside.

The backing plate 13 substantially fits into a recess 16a formed in the wheel portion of the spare tire 16, and the hook 14 which is erected substantially in the center of the plate 13 has a tip protruding from the opposite side of the spare tire 16. . Protruding hook 14
A locking hook 18 attached to the tip of a wire 17 extending from the winding mechanism 12 is locked to the.

As shown in FIG. 5, the hoisting mechanism 12 decelerates the rotations of the drive motor 19 and the motor, and the speed reducing mechanism 20 for increasing the torque and the wire 17 for winding the winding drums 21a and 21b.
And so on.

The fixing mechanism 22 is composed of a handle 24 rotatably attached to a fulcrum 23, a locking piece 25 for locking the handle 24, and the like. The tip 24a of the handle 24 is formed in a hook shape so that the hook 14 can be locked and fixed. A grip portion 24b is formed at the proximal end of the handle 24, and the grip portion 24b is held and operated by a hand to engage the locking piece 25 to fix the handle.

The deceleration mechanism 20 has a plurality of gears arranged in the gear box 26, and decelerates the rotation of the drive motor 19. Further, by moving the gear 27 on the shaft 28, the gears 29a and 29b can be selectively driven to rotate. Therefore, the winding drum 21a and the winding drum 21b can be selected and driven, and any one of the two spare tires can be attached and detached.

Next, a method of using the spare tire holding mechanism constructed as described above will be described. First, when removing the spare tire from the truck bed, the fixing mechanism 22
Need to cancel. To release the fixing mechanism 22, the handle 24 is held and removed from the locking piece 25, and the tip 24 a is released from the hook 14. Next, the operating portion 11 of the driver's seat 10 is operated to drive the drive motor 19 to rotate the winding drum 21a or 21b in the direction in which the wire 17 is gradually loosened.

When the winding drum is gradually loosened, the wire 17 extends and the spare tire 16 reaches the ground (see FIG. 1). Furthermore, after loosening the wire 17 by the operating portion 15, the locking hook 18 is removed and the spare tire 16 is used.

When the spare tire 16 is stored in the truck bed, first, as shown in FIG. 3, the backing plate 13 is mounted in the recess 16a of the spare tire 16 and the tip of the hook 14 is projected from the opposite side. . A hook 18 for a wire 17 extending from the winding mechanism 12 is locked to the protruding hook 14.

The hook 14 for hooking the wire 17 to the hook 14
8 is locked, the operation unit 15 is operated to drive the drive motor 1
9 is driven to wind up the wire 17. A torque meter is attached to the shaft 30 of the winding drum 21, and the drive motor 19 is automatically stopped when the winding torque of the wire exceeds a predetermined value. When the winding of the wire 17 is stopped, the handle 24 of the fixing mechanism 22 is held, the tip 24a is engaged with the hook 14, and then the handle 24 is locked by the locking piece 25 to be fixed.

In this embodiment, the winding drums 21a, 2a
Since 1b and two winding drums are provided, two spare tires can be stored. Further, the torque control mechanism may be a torque limiter that slips when the torque exceeds a predetermined value. The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the present invention.

[0020]

As described above, the spare tire holding mechanism according to the present invention comprises a backing plate that abuts against the wheel portion of the tire, and a hook that is erected substantially in the center of the plate.
Since it has a hoisting mechanism equipped with a wire that engages with the hook and a fixing mechanism that holds and holds the hoisted hook, it is possible to install and remove the spare tire by operating from the driver's seat, so it is a cold time. However, there is no danger of damaging the waist or knees. Further, the hoisting mechanism can be operated at the driver's seat, and since a plurality of hooks can be operated by the switching mechanism, a plurality of spare tires can be stored.

The winding mechanism is equipped with a torque control mechanism to stop the winding when a constant torque value is reached.
The operator simply presses the winding button of the operation unit, and does not need to wait for when to stop.

[Brief description of drawings]

FIG. 1 is a side view of a truck equipped with a spare tire holding mechanism according to an embodiment of the present invention.

FIG. 2 is a side view showing a fixing mechanism of the spare tire holding mechanism.

FIG. 3 is an explanatory view showing a hook member of a fixing mechanism of the spare tire holding mechanism.

FIG. 4 is an explanatory view showing a handle of a fixing mechanism of the spare tire holding mechanism.

FIG. 5 is an explanatory view showing a drive unit of the spare tire holding mechanism.

FIG. 6 is an explanatory view showing a drive unit of the spare tire holding mechanism.

FIG. 7 is an internal explanatory view showing a drive unit of the spare tire holding mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Driver's seat 11 Operation part 12 Winding mechanism 13 Patch plate 14 Hook 15 Operation part 16 Spare tire 16a Recessed part 17 Wire 18 Locking hook 19 Drive motor 20 Reduction mechanism 21 Winding drum 22 Fixing mechanism 23 Support point 24 Handle 24a Tip 24b Grip part 25 Locking Piece 26 Gear Box 27 Gear 28 Shaft 29a, b Gear 30 Shaft

Claims (3)

[Claims] 1. A hoisting mechanism provided with a contact plate that abuts against a wheel portion of a tire, a hook that is erected substantially in the center of the plate, a wire that engages with the hook, and a hoisted hook. And a fixing mechanism for holding and fixing the spare tire holding mechanism. 2. The spare tire holding mechanism according to claim 1, wherein the hoisting mechanism can be operated in a driver's seat, and a plurality of hooks can be operated by a switching mechanism. 3. The spare tire holding mechanism according to claim 1, wherein the hoisting mechanism has a torque control mechanism and stops hoisting when a constant torque value is reached.