JPH0534241Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a wheel mounting structure for vehicles such as automobiles, and in particular, it is possible to install and remove the wheel by simply installing and removing only one nut, and it also has a structure that allows the wheel to be installed and removed by attaching and removing only one nut. The present invention relates to a new wheel mounting structure in which the torque transmitted between the wheels and the wheels is the same as that of conventional vehicles.

[Conventional technology]

In a conventional wheel mounting structure for a vehicle, for example, as shown in FIGS. 4 and 5, a wheel mounting bolt 3 protruding from the surface of a hub 2 that is integral with an axle shaft 1 is inserted into a hole in a disc portion 4a of a wheel 4. mount the wheel 4 on the hub 2, screw the nut 5 onto the bolt 3, and attach the wheel 4 to the hub 2.
We are trying to conclude this. Note that 6 is a center bolt protruding from the center of the hub 2, 7 is a cap nut tightened to the center bolt 6, and 8 is a brake drum integrated with the hub 2.

[The problem that the idea aims to solve]

In the conventional wheel mounting structure as described above, when installing or removing the wheel 4, a total of 4 to 6 nuts 5 must be tightened or removed, which makes changing tires very time consuming. However, when tightening the nuts, each nut must be tightened with a uniform torque, which is a problem in that the operation is very troublesome.

In order to solve the problems of the conventional wheel mounting structure, a wheel mounting structure such as that disclosed in Japanese Utility Model Application Publication No. 57-111604 has been proposed. The wheel mounting structure disclosed in this publication has a hub structure with only a center bolt at the center of the bolt protruding from the hub and no other bolts, and a plurality of radial bolts that can be inserted into holes penetrating the wheel disc. The wheel disc portion is fixed to the hub by fitting a spider-shaped fastener with legs onto the center bolt and fixing the fastener to the center bolt with a nut.

With this type of wheel mounting structure, the wheel can be removed by simply removing the nut tightened into the center bolt, and the wheel can be fixed by simply tightening the nut into the center bolt, making wheel installation easier. Although the removal work is easier than with conventional wheel mounting structures, this proposed wheel mounting structure cannot be used in actual use because it lacks consideration of the dynamics of the vehicle's power transmission system. There was a problem. That is, in the wheel mounting structure proposed above, torque transmission between the wheel and the hub (i.e., the axle shaft) is performed via the center bolt and the fastener loosely fitted to it, but the Since the center bolt is thin and has no torque transmission capacity, a huge torque is applied to it, which increases the possibility of the center bolt breaking. Since they are integrated only by force, the allowable transmission torque between them is quite small. Therefore, this proposed wheel mounting structure had problems in practicality from a mechanical standpoint.

The problem to be solved by this invention is to provide a new wheel mounting structure that solves the problems that exist in conventional wheel mounting structures and eliminates the problems that exist in the above proposals.

[Means to solve the problem]

A vehicle wheel mounting structure according to this invention is a vehicle wheel mounting structure in which a wheel is supported on a hub by inserting a center bolt and a torque transmission pin into a hole in a disk portion of the vehicle. A plurality of torque transmission pins protruding from the hub surrounding the protruding center bolt are arranged between the center bolt and a plurality of torque transmission pins having notched grooves, and the tip engages with the notched groove of the torque transmission pin. The base end of an arm-shaped wheel pressing member having a pin insertion hole and a fulcrum portion protruding at a position closer to the pin insertion hole than the midpoint in the longitudinal direction is screwed to the center bolt via an annular plate. The wheel is supported on the hub by pressing with one wheel fixing nut.

According to the structure of this invention, the wheel can be removed from the hub by removing the nut screwed into the center bolt and then removing the annular plate and the wheel pressing member. Therefore, the wheel can be removed by removing only one nut. can be removed.
Further, even after the wheel is installed, the wheel can be installed by simply tightening only one nut onto the center bolt. Furthermore, in the structure of the present invention, torque is transmitted from the hub to the wheel via a plurality of torque transmission pins, so that torque transmission is no inferior to that of conventional wheel mounting structures.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3.

2 is a hub, and hub 2 is axle shaft 1
is fixed at the tip of the A center bolt 6 for wheel insertion is provided protruding from the center of the hub 2, and a plurality (four in this embodiment) of torque transmission pins 9 are provided protruding from the surface of the hub 2 surrounding the center bolt 6. ing. A circumferential notch groove 9a is formed on the outer peripheral surface of the torque transmission pin 9.
The outer peripheral surface is a cylindrical surface except for this notched groove 9a. The disc portion 4a of the wheel 4 is provided with a hole through which the center bolt 6 and the torque transmission pin 9 are inserted. Therefore, it is supported by the hub 2.

Reference numeral 10 denotes an arm-shaped wheel pressing member having a pin insertion hole 10a at its tip for engaging the torque transmission pin 9 in the notch groove 9a.
0 is the pin insertion hole 1 from the midpoint in the longitudinal direction.
A fulcrum portion 10 bulging downward at a position close to 0a
It is equipped with b. The wheel pressing member 10 is connected to the center bolt 6 so that the hole line of the pin insertion hole 10a is engaged with the notch groove 9a of the torque transmission pin 9 on the distal end side, and the base end is located near the center bolt 6. It is arranged radially between each torque transmission pin 9, and its fulcrum portion 10b is in contact with the disk portion 4a of the wheel 4.

Reference numeral 11 denotes an annular plate that is loosely fitted to the center bolt 6 so as to be in pressure contact with the base end of each wheel pressing member 10. A wheel fixing nut 12 is screwed into 6 with a predetermined torque.

In the wheel mounting structure according to the present invention as described above, when fixing the wheel 4 to the hub 2,
After fitting the disc portion of the wheel 4 onto the center bolt 6 and torque transmission pin 9 to support the wheel 4 on the center bolt 6 and torque transmission pin 9, each wheel pressing member 1 is attached to each torque transmission pin 9.
Lock the tip of 0. Since the upper wheel pressing member 10 hangs down from the torque transmission pin 9, tighten the wheel fixing nut 12 while supporting one of the left, right, and lower wheel pressing members 10 with your hand, and press the wheel. After the member 10 and the upper wheel pressing member 10 are lightly tightened and fixed with the plate 11 (temporary tightening), the remaining wheel pressing member is pushed between the plate 11 and the wheel 4, and then the wheel fixing nut 12 is tightened all at once.
Tighten (final tightening).

On the other hand, when removing the wheel 4 from the hub 2, first remove the wheel fixing nut 12 and the annular plate 11 from the center bolt 6, then remove each wheel pressing member 10, and immediately remove the wheel 4 from the hub. It can be removed from 2.

[Effect of idea]

As described above, the vehicle wheel mounting structure according to the present invention has the following effects.

Since the wheel 4 can be removed from the hub 2 by simply removing one wheel fixing nut 12 and the annular plate 11, the time required to remove the wheel 4 is shortened.

To fix the wheel 4 to the hub 2, the wheel pressing member 10 is attached to one wheel fixing nut 1.
2, first temporarily tighten through the annular plate 11,
The installation work is also relatively simple since it can be done by final tightening.

The wheel pressing member 10 uses the fulcrum portion 10b as a fulcrum and the peripheral edge of the pin insertion hole 10a is strongly pressed against the notch 9a by the action of a lever, so that the wheel pressing member 10 and the torque transmission pin 9 are reliably connected.

[Brief explanation of the drawing]

Fig. 1 is a schematic longitudinal cross-sectional view of the essential parts of an embodiment of the wheel mounting structure of the present invention, Fig. 2 is a side view as seen from the right side of Fig. 1, and Fig. 3 is the same as Figs. 1 and 2. FIG. 4 is a partial perspective view for explaining a conventional wheel mounting structure, and FIG. 5 is a schematic vertical sectional view of the conventional wheel mounting structure. 1...Axle shaft, 2...Hub, 3...
Wheel mounting bolt, 4...Wheel, 4a...
Wheel disc portion, 5... Nut, 6... Center bolt, 7... Cap nut, 8... Brake drum, 9... Torque transmission pin, 10... Wheel pressing member, 10a... Pin insertion hole, 10b ……
Fulcrum part, 11...Annular plate, 12...Wheel fixing nut.

Claims (1)

[Scope of utility model registration request] In a vehicle wheel mounting structure in which a wheel is supported on a hub by inserting a center bolt and a torque transmission pin into a hole in the disk portion, the hub is mounted around a center bolt protruding from the center of the hub. The center bolt is provided between a plurality of torque transmission pins that protrude from the center and have notched grooves, and has a pin insertion hole at the tip that engages with the notched groove of the torque transmission pin, and is located at the center point in the longitudinal direction. The base end of an arm-shaped wheel pressing member with a protruding fulcrum portion located closer to the pin insertion hole is pressed via an annular plate by one wheel fixing nut screwed onto the center bolt. A wheel mounting structure for a vehicle, characterized in that the wheel is supported by the hub.