JPS5950550B2 - Spare tire holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spare tire holding device suitable for vehicles using double tires of the same diameter or different diameters.

A conventional spare tire holding device fixes a spare tire hoisting device to a cross member of the vehicle body, loads and supports the spare tire on a suspension board connected to the lower end of the hoisting device, and then hoists the hoisting device. Normally, the spare tire is supported by a suspension board, but since this type of spare tire holding device uses a hoisting device as described above,
The structure is complicated, and since this hoisting device is fixed to a cross member under the vehicle body, it has the disadvantage that the hanging weight at the rear of the vehicle body becomes large.

The present invention was completed with the aim of providing a spare tire holding device that does not have the above-mentioned drawbacks, and the illustrated embodiments will be described in detail below.

In the figure, reference numeral 1 denotes a base body fixed by bolts to a cross member 2 of a vehicle body that uses double tires.A suspension ring 3 is provided approximately in the center of the base body 1. A cylindrical insert pin 5 is suspended swingably from a hook 4 provided at its upper end, and this insert pin 5 is provided upright in the center of a tire suspension stand 8 to be described later. A male threaded portion 5' that can be screwed into the female threaded portion 9 on the inner surface of the cylindrical body 11 is formed on the circumferential surface of the lower half, and a guide hole having an axially tapered guide hole at the lower end of the insert pin 5 is formed. 7 is provided.

Reference numeral 8 denotes a tire suspension base, and the tire suspension base 8 has a flange 10 formed on its inner surface with a female threaded portion 9 that screws into the male threaded portion 5' of the insert pin 5, and has an upward protrusion 10' on a part of its upper outer surface. A cylindrical body 11 provided with a cylindrical body 11 is provided upright in the center of a lower tire holder 12, and a pin 13 is implanted in the tire holder 12 to engage with a tire wheel hub hole. 10, a disc-shaped upper tire support 14 is removably mounted by engaging the protrusion 10' with an engagement hole 15 provided in a part thereof and fitting the center hole into the cylinder 11. The upper surface of the tire receiver 14 is provided with a tire slip stopper 16 and a pin 17 that engages with the tire hub hole.

Reference numeral 18 denotes a tire transport support, and the tire transport support 18 has a male threaded portion 19 that can be screwed into the female threaded portion 9 of the tire suspension base 8.
' A hollow insert pin 19 is provided upright on the tire support base 20 and is movable.The insert pin 9 is inserted into the guide hole 7 at the lower end of the insert pin 5 from directly below. The guide rod 24 that can be inserted is inserted into the guide rod 24, that is,
The inner diameter of the insert pin 19 is partially stepped and a guide rod 2 is inserted into the hollow part.
4 is slidably inserted into the guide rod 2 with the spring 21 always pointing upwards.
A pin 22 stretched on the lower part of the insert pin 19 is guided through a guide elongated hole 23 provided below the insert pin 19, and a spring 27 is provided in the tire support base 20 to spring the insert pin 19 upward. A supporting case 28 is provided, and a tire support stand 2 is provided.
A caster 25 is provided at one end of the 0, and a support leg 26 is provided at the other end.

In this structure, in order to hold the two spare tires on the underside of the vehicle body, first, the female threaded portion 9 of the tire suspension stand 8 is screwed into the insert pin 19 of the tire transport support 18. The tire transport support 18 is lowered by screwing until the lower tire support 12 contacts the tire support base 20,
Next, insert the central wheel hole of the large-diameter spare tire B into the hollow insert pin 19 provided upright on the tire support stand 20 of the tire transport support 18, and engage the pin 13 with the bubble hole of the wheel. The spare tire B is suspended on the tire suspension stand 8.

Next, the upper tire receiver 14 is moved to the tire transport support 18.
It is inserted through the insert pin 19 and mounted so that the protrusion 10' of the flange 10 and the engagement hole 15 are engaged.

After that, insert the wheel center hole of the small diameter spare tire A into the tire transport support 18 so that the pin 17 engages with the wheel bubble hole and the tire slip stopper 16 is guided to the inner circumference of the wheel center hole. The tire A is suspended on the upper tire support 14.

After the spare tires A and B have been suspended in this manner, the tire conveying support 18 is moved under the transfer of the casters 25 and conveyed under the vehicle body.

Then, the tip of the guide rod 24 is positioned directly below the guide hole 7 of the insert pin 5 that is suspended from the cross member 2 of the vehicle body, and after this position setting is completed, the outer circumference of either spare tire A or B is set. When you turn clockwise, the tire transport support 18
Since the casters 25 and the support legs 26 are in a fixed state in contact with the ground, the tire suspension base 8 screwed onto the insert pin 19 stably rotates and rises.

In this case, since the guide rod 24 is always urged upward by the spring 21, the kite rod 24 extends upward as the tire suspension base 8 rises, and the guide rod 24 extends upward, and the guide hole 7 of the insert pin 5 located above the kite rod 24 extends upward. As a result, the insert pin 5 and the insert pin 19 are arranged on the same axis.

Then, as the tire continues to rotate, the tire suspension base 8 goes through the process shown in FIGS. 2 and 3, and finally reaches the insert pin 19 of the tire transport support 18.

The screws are unscrewed and transferred to the insert pin 5, and the tire suspension base 8 is moved up the insert pin 5, and the spare tire is tightened by being brought into contact with a predetermined pressure under the vehicle body.

Note that the tire suspension stand 8 is connected to the butterfly pin 1 of the tire transport support 18.
A spring 27 is supported in the housing 28 of the tire support base 20 to spring the insert pin 19 upward while the insert pin 5 is being transferred and screwed from the tire support stand 20 to the insert pin 5. The transfer and screwing of the tire suspension base 8 to the tire suspension frame 5 can be easily performed.

After the tire is tightened, the guide rod 24 is pressed down against the spring 21 to release its upper end from the guide hole 7, and only the tire transport support 18 can be moved and stored separately. I can do it.

Next, when using a spare tire, use the tire transport support 1.
The insert pin 19 of 8 is installed below the insert pin 5, and the guide rod 2
4 into the guide hole 7 of the insert pin 5 from directly below, and then rotate the outer periphery of the spare tire in a counterclockwise direction, and the internal thread 9 formed on the inner surface of the cylindrical body 11 is screwed into the insert pin 5. The tire suspension base 8 that has been lowered is lowered, and as it continues to rotate, the female threaded portion 9 of the lowered tire suspension base 8 is unscrewed from the insert pin 5 and is transferred to the insert pin 19, and then When the spare tire is rotated to the left, the tire suspension 8 descends and when it approaches the lowest position, the spring 21
The pin 22 is pushed down under the guidance of the elongated guide hole 23, and the guide rod 24 is automatically lowered and removed from the guide hole 7, and then the tire conveyance support 1 is moved laterally.
8 to the outside from under the vehicle body, the spare tire can be taken out.

As is clear from the description of the above-mentioned embodiments, the present invention has an extremely simple structure in which a spare tire is tightened under the vehicle body using a butterfly rod that hangs down from the vehicle body and a tire suspension frame that can be screwed into the butterfly rod. Because it is a tire, it is possible to reduce hanging weight and mass-produce it at a low cost.Moreover, the spare tire can be attached to the underside of the car body by using a removable tire transport support and hanging its butterfly pin from the car body. The installation of the spare tire has various advantages, such as simplifying the removal work, since it is only necessary to perform an extremely simple operation of placing the spare tire below the insert pin and rotating the tire suspension base through the spare tire. This is an extremely significant contribution to the industry as a spare tire holding device suitable for stacking and suspending two spare tires.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Figs. 2 and 3 are partially cutaway front views showing the process of holding a spare tire, and Fig. 4 is a partially cutaway front view showing the process of holding a spare tire. Fig. 4 shows a spare tire being held on the underside of the vehicle body. FIG. 3 is a partially cutaway front view showing a state where 5: Butterfly pin, 8: Tire suspension stand, 9: Female threaded part, 11: Cylindrical body, 12: Tire holder, 18: Tire transport support, 19
: Butterfly stick, 20: Tire support stand.

Claims (1)

[Claims] 1. A tire suspension 8 comprising a cylindrical body 11 with a female threaded portion 9 formed on its inner surface and provided upright in the center of a tire holder 12, and a butterfly that hangs from the vehicle body and can be screwed into the female threaded portion 9 of the tire suspension 8. A hollow insert pin 19 that can be screwed into the rod 5 and the female threaded portion 9 of the tire suspension stand 8 is provided upright on the tire support stand 20, and the insert pin 19 is provided with a guide hole 7 at the lower end of the insert pin 5.
A spare tire holding device comprising a tire transport support 18 fitted with a guide rod 24 that can be inserted from directly below.