JPH036028B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spare tire carrier, and in particular to a method for easily and safely attaching and detaching a heavy-load spare tire for a large vehicle by one person without using power. Regarding the spare tire carrier.

[Prior Art] In general, in order to remove a heavily loaded spare tire from a spare tire carrier installed on the frame of a large vehicle and lower it onto the ground surface, or conversely to lift it and reinstall it on the carrier, There are problems that involve a lot of effort and danger. In order to solve this problem, various spare tire carriers have been proposed that are equipped with auxiliary devices such as power cylinders and winches for moving the spare tire up and down. For example, a spare tire carrier disclosed in Japanese Patent Application Laid-Open No. 128976/1983 is configured to move the spare tire up and down using a winch device.

[Problems to be Solved by the Invention] However, conventional carriers of this type require power from hydraulic equipment, etc., resulting in complex structures, high costs, and maintenance problems. It also had the disadvantage of being difficult.

[Object of the Invention] The present invention was devised to eliminate the drawbacks of the prior art as described above, and its purpose is to have a simple structure, reduce costs, facilitate maintenance, and reduce heavy weight. To provide a spare tire carrier that allows one person to easily and safely attach and detach a loaded spare tire without requiring power.

[Summary of the Invention] In order to achieve the above object, the present invention provides a mounting table on which a spare tire is placed on the frame of a vehicle, and at one end of the mounting table, the spare tire is restrained on the mounting table and is A hold bar is pivotally supported on the ground surface to guide the spare tire while rolling it on the ground surface, and a stopper for stopping the spare tire is provided at the tip of the hold bar, and a stopper is provided at the tip of the hold bar. A stay member is provided to support the ground plane at a predetermined height on the ground plane in stages.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

FIG. 1 shows a vehicle, in particular a dump truck, in which a spare tire carrier 4 according to the invention is provided on a frame 3 between a driver's cab 1 and a cargo bed 2. FIG. As shown in FIGS. 2 and 3, the carrier 4 has a mounting table 5 fixed on the frame 3 with one end facing toward the vehicle. The mounting table 5 has a strip-shaped floor surface 7 sufficient to place the spare tire 6 in an upright state, and has a dish-shaped receiver 8 at the inner end thereof that wraps around one side of the spare tire 6. is provided in an upright manner, and on both sides of the upper surface on the outside of the vehicle, a raised rolling regulating portion 9 is formed in the shape of a mound for supporting the lower surface of the other side of the spare tire 6 and regulating its rolling. In addition, the spare tire 6 is attached to the hold bar 1 described later.
In the case of rolling on the zero position, the roll is rolled over the rolling regulating portion 9. In addition, a spare tire 6 is provided between both sides of the mounting table 5 and the receiver 8.
A support bar 11 is provided to prevent the vehicle from overturning.

On the other hand, the base end of a hold bar 10 that holds and fixes the spare tire 6 between the support 8 and the support 8 is rotatably attached to the outer side end of the mounting table 5. The end side is configured to be displaced from a storage position where it stands up on the mounting table 5 to a maximum deployment position where it lies down on the ground plane 13. The hold bar 10 is made up of parallel bar members 25, and a receiving plate 14 that faces the receiver 8 and receives the opposite side of the spare tire 6 in the storage position is spanned between the parallel bar members 25. This receiving plate 14 is the hold bar 1
In the unfolded state, the spare tire 6 can support the load of the spare tire 6 on the mounting table 5 and guide it while rolling to the tip of the hold bar 10.

Further, both ends of the parallel bar member 25 constituting the hold bar 10 are connected by a cross member 15 and have an upright part 16 that stands up inwardly at a substantially right angle. A stopper 17 is stretched over the spare tire 6 to catch and stop the spare tire 6 being guided. Furthermore, guide plates 18 are provided on both sides of the hold bar 10 in parallel along the longitudinal direction for guiding the movement of the spare tire 6 and preventing it from overturning.

A stay member 19 is rotatably provided at the tip of the hold bar 10 to support the hold bar 10 at a predetermined height above the ground plane 13 in stages.
The stay member 19 includes a main stay 20 that supports the hold bar 10 at a horizontally expanded position, and a sub stay 2 that supports the hold bar 10 at a position slightly higher than the maximum expanded position.
It is composed of 1. The main stay 20 is formed on a rectangular frame as shown in FIGS. 3 to 5, and its base end is rotatably attached to the tip of the hold bar 10 via a support shaft 22 and a bearing member 23. ing. The bearing member 23 is composed of a ring portion 24 through which the support shaft 22 is rotatably inserted, and a fastening portion 26 that fastens the ring portion 24 to the parallel bar member 25 of the hold bar 10. They are mounted on the outside facing each other. A ring portion 27 is formed on both sides of the base end of the main stay 20, through which the support shaft 22 is rotatably inserted. axis 2
They are rotatably connected via 2. Furthermore, main stay stoppers 28 are formed on both ring portions 27 of the main stay 20 to lock onto the distal end portions of the parallel bar members 25 to regulate the expansion angle of the main stay 20. Further, a lock plate 30 is provided at the tip of the main stay 20 for fixing the main stay 20 in the storage position overlapping the hold bar 10 in the storage position via a fixing rod 29. The base end of the fixing rod 29 is attached to the bracket 3 on the floor surface 7 between both the rolling restriction parts 9 on the mounting table 5.
1, and a tightening screw 32 that engages and tightens the lock plate 30 is screwed onto the tip end thereof.

The sub-stay 21 is made of a short tube, and its base end is fixed to one end of the support shaft 22 so that it can rotate together with the support shaft 22. A hold bar 10 is placed on the support shaft 22 between both ring parts 24.
A sub-stay stopper 33 is provided in a protruding manner to lock onto the cross member 15 of the sub-stay 21 to regulate the expansion angle of the sub-stay 21. In addition, the sub stay 21 is connected to the main stay 2.
A holding fitting 34 made of a spring plate is provided on one side of the main stay 20 to hold it in the storage position in which the main stay 20 is superposed.

In addition, 35 and 36 are the rising parts 1 of the hold bar 10.
6 and the main stay 20, respectively.

Next, the operation of the spare tire carrier will be explained.
The spare tire 6 is placed on the mounting table 5, and is held between the holding bar 10 and the receiver 8, which are locked in the storage position with the tightening screws 32, etc., and is held at both ends by the support bar 11 and the guide plate 18. Since the entire body is supported in a covered state, it can be held securely. The degree to which the hold bar 10 is tightened with respect to the spare tire 6 can be adjusted as appropriate using the tightening screw 32.

To remove the spare tire 6 from the carrier 4, release the lock by loosening the tightening screw 32 and removing it from the lock plate 30, then remove the hold bar 1.
0 is rotated about a pivot 12 as a fulcrum and deployed outside the vehicle. At this time, the main stay 20 is simultaneously rotated about the support shaft 22 until the main stay stopper 28 is locked to the parallel bar member 25, and the main stay 20 is expanded.
The hold bar 10 is supported horizontally by bringing its tip into contact with the ground plane 13. These operations are performed with the spare tire 6 remaining on the mounting table 5 and not on the hold bar 10, so
It can be done easily. Next, as shown in FIG.
Hold bar 10 while rolling over the
Move it to the top tip. In this position, rolling is restricted by the stopper 17 and the receiving plate 14, and rollover is prevented by the guide plate 18, so that it is securely held to facilitate the next operation.

Next, while supporting the hold bar 10 by hand, rotate the main stay 20 in the storage direction, and move the sub stay 21 onto the support shaft until the sub stay stopper 33 is locked to the cross member 15 of the hold bar 10.
The holding bar 10 is rotated around 2 and unfolded, and the hold bar 10 is supported on the ground plane 13 via the sub-stay 21, as shown in FIG. Next, hold bar 10
Support the sub-stay 21 by hand and rotate the sub-stay 21 in its storage direction, and place the tip of the hold bar 10 on the ground surface 1.
3, and in this state, the spare tire 6 is removed from the hold bar 10 as shown in FIG.

Moreover, when supporting the spare tire 6 on the carrier 4, the operation opposite to the above may be performed.

In this way, the load of the spare tire 6 is supported by the lever action of the hold bar 10 that rotates about the pivot 12, and the hold bar 10 is lowered or raised in stages via the main stay 20 and the sub stay 21. Not only can it be operated with light force, but the work can be carried out reliably and safely.

Note that it is possible to further reduce the weight by extending the tip of the hold bar 10 and increasing the lever ratio. In addition, stay members 19 of different lengths
It is also possible to further increase the number of inclination steps of the hold bar 10 by employing a large number of steps. Furthermore, the stay member 19 may be provided with a roller that rolls on the ground plane 13.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) The spare tire is supported on a hold bar whose one end is pivotally supported by a mounting table to exert a lever effect, and the hold bar is gradually tilted onto the ground surface via the stay member, making it possible to avoid heavy loads. To easily and safely attach and detach a loaded spare tire by one person without requiring power.

(2) The structure is simple and does not require a power mechanism;
It can reduce manufacturing costs, is less likely to break down, is easy to maintain, and can be easily adopted in existing vehicles.

[Brief explanation of drawings]

Fig. 1 is a side view of a vehicle equipped with a spare tire carrier according to the present invention, Fig. 2 is a perspective view of the spare tire carrier, Fig. 3 is a side view of the same, and Fig. 4 is a front view of the main stay. FIG. 5 is an enlarged plan view of the same, and FIGS. 6 to 8 are schematic explanatory views showing the operating status of the spare carrier. In the figure, 3 is the frame of the vehicle, 4 is the spare tire carrier, 5 is the mounting table, 6 is the spare tire, and 10
1 is a hold bar, 13 is a ground plane, 17 is a stopper, and 19 is a stay member.

Claims (1)

[Claims] 1 A spare tire mounting stand fixed to the frame of the vehicle, and a spare tire mounting stand that is pivotably supported on the mounting stand so that it can be raised and lowered, restrains the spare tire on the mounting stand in the upright position, and rolls the spare tire onto the ground surface in the down position. A hold bar that guides the movement, a spare tire stopper provided at the tip of the hold bar, and a length that is pivotally supported by the tip of the hold bar and supports it in stages at a predetermined height above the ground contact surface. A spare tire carrier comprising a plurality of stay members of different types.