JPS5848230Y2 - tire carrier - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spare tire carrier suitable for holding two stacked tires suspended from the underside of a vehicle body.

In recent years, so-called low-floor trucks have been proposed in which the front wheels have large diameter tires and the rear wheels have small diameter tires to lower the loading platform.

When using tires with different sizes for the front and rear wheels, it is necessary to have two spare tires on the vehicle in case of tire damage such as a puncture.

However, a considerable amount of space is required to hold each of the two tires on the underside of the vehicle body, and if that space is not available, the two tires must be held in a stacked state.

There are four types of stacking configurations of two tires, eg, a large diameter tire on the bottom and a small diameter tire on the top, as shown in FIG. 1 (a+btetd).

In other words, as shown in FIG.
The first one is arranged so that the concave part 211 is on the upper side.
As shown in FIG. The wheel disk 11 is arranged so that the concave part is on the upper side, and the small diameter tire 2 is arranged so that the concave part of the wheel disc 21 is on the upper side. Both the small diameter tire 2 and the concave portion 11 of the wheel disc thereof
There is one in which 1 and 211 are placed on the lower side.

In this way of stacking tires, considering the stability when lifting and holding the tires, it is a good idea to position the holding position of the tire holder as high as possible with respect to the center of gravity of the tire. Considering the guidance when lifting and holding the wheel, it is desirable to use the form a above, that is, the form in which the distance between the two wheel disks is minimized, and this form is generally used frequently.

If the tires are held in the above-mentioned configurations c and d when replacing tires, there is a risk that the tires will protrude significantly below the vehicle body, or that the tires may fall off due to vibrations of the vehicle body while driving.

Therefore, it is desired to obtain a tire carrier which cannot hold tires in any form other than the one shown in FIG. 1a.

Conventionally known techniques for holding a tire in the form a above are disclosed in, for example, Japanese Unexamined Utility Model Publications No. 52-115047 and No. 53-36261.

However, the former is a generally used tire carrier with a tire holding member attached to the lower end of the chain, and when such a carrier is used, it is not limited to the form shown in Figure 1 a above, but also any form shown in b+c and d. However, it is possible to hold the tire, but there is a risk that the tire cannot always be held in the desired state a.

In the latter case, the connection point between the chain and the tire holder is above the center of gravity of the two tires, and the two tires engaged with the tire holder are centered with the tire holder due to their own weight. The purpose is to maintain the engagement between the tire and the tire holder to ensure stability when lifting the tire, and no consideration is given to preventing mistakes in stacking tires when changing tires. Not yet,
Basically, as with the former case, it is possible to hold the tire in any of the configurations shown in FIG. 1a, c, and d.

Moreover, the latter type has a complicated structure and a large number of parts, and is not necessarily satisfactory in terms of workability.

The present invention was devised in view of the above points, and it is impossible to hold the tire in any form other than that shown in Figure 1a.
The present invention aims to provide a tire carrier that has a simple structure, has a small number of parts, and has good workability.

'Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIG. 2, 3 is a cross member installed between the left and right chassis frames 4a+4b, and 5 is the cross member 3.
A tire carrier attached to the center of the tire carrier, which includes a case 52 fixed to the lower surface of the cross member 3 by bolts 51a51b, a hoisting drum 53 rotatably supported by the case, and a chain 54 wound around the drum. and a tire holding member 5 attached to the lower end of the chain 54.
5 and a predetermined distance from the lower end of the chain 54, that is,
It is installed at a position slightly longer than the distance between the wheel disc 11 of the large-diameter tire 1 and the wheel disc 21 of the small-diameter tire 2, and has a diameter larger than the diameter of the wheel disc hole 21a of the wheel disc 21 of the small-diameter tire 2. and a regulating member 56.

As shown in FIGS. 4 and 5, the tire holding member 55 includes a main body 550 having a square cross section, and a locking member made of an elastic material such as a spring that is attached to the upper plate 551 of the main body with rivets or the like and protrudes upward. 552a552b, a long hole 551a formed in the upper plate 551, and a long hole 5 formed in the bottom of the upper plate 551.
Stoppers 553a and 5 are fixed to both sides of 51a, respectively.
53b.

It consists of 553c and 553d.

As shown in FIG. 3, the regulating member 56 consists of a disk 561 and a guide member 562 that connects the disk and the chain 54.

In FIG. 3, reference numeral 57 denotes a locking pin attached to the lower end of the chain 54, which can be inserted through an elongated hole 551a formed in the upper plate 551 of the tire holding member 55.

Further, in FIG. 2, reference numeral 6 denotes a substantially cylindrical guide and stopper whose upper end is fixed to the lower surface of the cross member 1 by bolts 61a and 61b, and whose lower end is connected to the recess 211 of the wheel disc 21 of the small diameter tire 2. A cushioning rubber sheet 62 is attached to the lower end.

The guide/stopper 6 is constructed by combining two halves obtained by dividing a cylindrical body into two parts.

The present invention is constructed as described above, and its operation will be described below.

When lifting a tire, first place the large-diameter tire 1 below the tire carrier 5 with the recess 111 of the wheel disc 11 facing downward, and then insert the tire holding member 55 diagonally from above into the wheel disc hole 11a. When it is passed through and then horizontally engaged with the lower surface of the wheel disc 11,
The locking members 552a and 552b are connected to the wheel disc hole 11.
a, and protrude from the upper surface of the wheel disc 11 while deforming inwardly.

When the locking members 552a and 552b pass through the wheel disc hole 11a in this way, they return to their normal shape due to their spring force and engage with the periphery of the wheel disc hole 11a, so that the tire holding member 55 is attached to the wheel disc 11. A sword 1 is locked on the bottom surface while maintaining a horizontal state.

After the tire holding member 55 is locked to the wheel disc 11, the small diameter tire 2 is placed on the large diameter tire 1 with the recess 211 of the wheel disc 21 facing upward.

Next, a locking pin 57 attached to the tip of the chain 54
through the wheel disc holes 21a and 11a,
It passes through a long hole 551a formed in the tire holding member 55 that is locked to the wheel disc 11 as shown by the broken line in FIG. , 553c and 55
3b and 553d to prevent the pin 57 from coming out of the elongated hole 551a.

At the same time, the guide member 562 of the regulating member 56 fits into the wheel disc hole 21a of the small diameter tire 2, and the center of the tire is regulated.

By rotating the drum 53 in this state, the chain 5
When tire 4 is rolled up, tires 1 and 2 are lifted up via locking pin 57 attached to the lower end of chain 54 and tire holding member 55.

During this lifting process, the lower end of the guide/stopper 6 is connected to the recess 211 of the wheel disc 21 of the small diameter tire 2.
It fits into the guide and functions as a guide.

When lifted further, the rubber sheet 62 attached to the lower end of the guide/stopper 6 comes into contact with the upper surface of the wheel disc 21, and the chain 54 is further wound up, so that the tires 1 and 2 become tire carriers as shown in FIG. Securely fixed between the guide and stopper.

In addition, when removing spare tires 1 and 2 from the vehicle body,
This can be done in the reverse order of the above installation procedure.

As described above, according to the present invention, the locking pin 5 is attached to the lower end of the chain 54 and engages and holds the tire holding member 55.
Since the regulating member 56 is mounted above the tire 1 so that the distance is slightly longer than the distance between the wheel disc 11 of the large-diameter tire 1 and the wheel disc 21 of the small-diameter tire 2, the tire configuration shown in FIG. 1a can be mounted. However, the configurations shown in FIGS. 1C and 1D, in which the distance between the two wheel discs is larger than the configuration shown in FIG. 1A, cannot be installed.

Further, according to the present invention, the chain 5 is attached to the tire holding member 55.
It has a simple structure in which a locking pin 57 attached to the lower end of the tire carrier 4 can be engaged and disengaged, and a regulating member 56 is attached to the chain, and the number of parts is small, making it possible to obtain a lightweight and inexpensive tire carrier. In addition, since the tire holding member 55 is provided with a locking member 552a that engages with the periphery of the wheel disc hole of the large diameter tire 1 (lower tire),
Workability is extremely good when attaching it to a tire.

[Brief explanation of the drawing]

FIG. 1 atbtctd is an explanatory diagram showing how tires are piled up, FIG. 2 is a sectional view showing the tire holding state of the spare tire carrier according to the present invention, and FIGS. 3 and 4 are the spare tire carrier according to the present invention. FIG. 5 is a perspective view showing one embodiment of each of the regulating member and tire holding member used in
The figure is a partial bottom view of the tire holding member shown in FIG. 3. 5... Spare tire carrier, 54...
・Chain, 55...Tire holding member, 56・
...Regulation member.

Claims (1)

[Scope of utility model registration request] In a spare tire carrier that suspends two tires stacked so that the distance between the wheel discs of the two tires is minimized, a locking pin attached to the lower end of a chain that is rolled up and unrolled by a hoisting drum, and A regulating member is attached to the chain above the pin at a distance slightly longer than the distance between the wheel discs and has a diameter larger than the diameter of the wheel disc hole of the upper tire, and the locking pin is inserted through the center of the regulating member. A spare tire carrier comprising a tire holding member having an elongated hole and a locking member made of an elastic material that engages with the periphery of a wheel disc hole in a lower tire.