JP2600438Y2 - Wheel fixing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel fixing device for fixing a driven wheel of a vehicle when performing a dynamic performance test of the vehicle with a chassis dynamometer.

[0002]

2. Description of the Related Art To perform a dynamic performance test of a vehicle using a chassis dynamometer, the vehicle body 1 is fixed on a deck 4 by fixing a driven wheel 3 with a wheel fixing device 6 as shown in FIG. The wheel 2 is rotating on the drum 5 of the chassis dynamometer.

For example, a wheel fixing device 6 shown in FIG. 4 is an enlarged view, as shown in FIGS. 5 and 6, a wheel stopper 7 which abuts on a front side of a driven wheel 3 is provided on a deck 4 and front and rear of a vehicle. 4a extending in the direction, T inserted into the rail 4a
It is provided movably via a base 7a extending in the tread direction of the vehicle fixed by the V-shaped bolt 8 and the nut 8a. Therefore, the wheel stopper 7 can be set at an arbitrary position by moving along the rail 4a and the base 7a. A base end of a female screw cylinder 9 is pivotally supported by a shaft 10 on a side portion of the wheel stopper 7, and a cantilever type wheel presser 1 is further provided.
1 is a head 12a of a bolt 12 screwed with the female screw cylinder 9.
Is mounted by being tightened with a nut 13.

When the driven wheel 3 is fixed, the nut 13 is loosened, and the bolt 12 is screwed into the female screw cylinder 9 or loosened according to the size of the wheel, so that the wheel presser 11 is hung on the rear outer periphery of the driven wheel 3. After the bolt 12 is tightened to fix the driven wheel 3, the nut 13 is tightened to prevent the bolt 12 from rotating with respect to the wheel presser 11 due to vibration or impact force, so that the tightening of the driven wheel 3 is not loosened.

FIG. 7 shows an example in which the driven wheel 3 disclosed in Japanese Utility Model Publication No. 61-26904 is fixed by a chain 14, and a stop ring 15a is rotatably mounted on the deck 4. A plurality of metal fittings 15 are provided at appropriate intervals corresponding to the outer diameter of the driven wheel 3 and the wheel base in the front-rear direction of the vehicle, and are also provided in the width direction of the driven wheel 3 and are used in pairs. A rail 4a is provided on the deck 4 in parallel with the front-rear direction of the vehicle, and a base 7a extending in the tread direction of the vehicle is attached by a T-shaped bolt 8 and a nut 8a. A guide plate 7b is mounted on the upper surface of the base 7a, and the wheel stopper 7 is placed by gripping the guide plate 7b. The chain 14 for fixing the driven wheel 3 has a ladder shape and is placed over the outer periphery of the driven wheel 3, and a carabiner 17 for locking to a retaining ring 15a is attached to one end thereof. The ends are united and wound around a chain winding device 16 provided on the opposite side of the wheel contact surface of the wheel stopper 7.

In order to fix the driven wheel 3, first, the base 7a is moved along the rail 4a in accordance with the position of the driven wheel 3 of the vehicle, and is fixed with the T-shaped bolt 8 and the nut 8a. The wheel stopper 7 is moved to a predetermined position along the guide plate 7b, and the driven wheel 3
, A carabiner 17 at one end is put on a retaining ring 15a, and the other end is taken up by the chain winding device 1.
6, the chain 14 is wound by operating the lever 16a, and the driven wheel 3 is fixed by tensioning the chain 14. Even if the vehicle changes, the outer diameter of the driven wheel 3 or the wheel base changes, the position of the wheel stopper 7 moves,
Stoppers 15 provided with a large number of carabiner 17 on deck 4
It can be easily dealt with by changing to the appropriate position.

[0007]

In the wheel fixing device shown in FIGS. 4 to 6, the clearance between the inner wall of the fender and the wheel is narrow, so that the mounting and dismounting of the wheel holder 11 is difficult. However, it is difficult to turn the bolt 12 with a spanner against the fender.

In the case where the driven wheel 3 shown in FIG. 7 is fixed by the chain 14, the lever 16a of the chain winding device 16 hits a fender or the like, so that the winding operation of the chain 14 is difficult.

When adjusting the wheelbase,
Even if the wheel fixing device 6 shown in FIGS. 4 to 6 also uses the chain 14 shown in FIG.
It is necessary to move the base 7a to an arbitrary position and tighten it again.

In particular, when the dynamic performance test is performed in a low-temperature environment, if the bolts and nuts to be turned are increased due to the fact that the parts are likely to be icy, the working time is prolonged, and the work of attaching and detaching the chain becomes difficult.

The present invention has been made in view of the above points, and an object of the present invention is to provide a wheel fixing device which can be attached and detached very easily.

[0012]

Means for achieving the above object of the present invention is to fit into said groove of a wheel fixing surface plate having grooves parallel to the wheel axis at regular intervals in the longitudinal direction of the vehicle. A bottom plate provided with a projection, a contact plate pivotally attached to one end of the bottom plate and having a plurality of claws and a cam block fixed to the back surface and having a front surface in contact with a wheel, and pivotally attached to the other end of the bottom plate; A pawl urged by a spring in a direction away from the bottom plate and engaging with the pawl of the pawl block, and a release lever engaging with the cam block to release the pawl engagement are provided.

[0013]

[Function] A wheel fixing device in which the outermost claws of the claw block are engaged with each other is disposed before and after the left and right driven wheels, and the projection of the bottom plate is fixed to the wheels with the contact plate being closest to the driven wheels. Fit into the groove of the surface plate.

Next, the pawl is pushed into the bottom plate side against the spring force. The contact plate rotates toward the driven wheel, and is held by claws engaged with the claws of the claw block. The driven wheel is sandwiched and fixed between the contact plates of the wheel fixing devices disposed in front and rear.

When the release lever is pushed into the bottom plate side against the spring force, the release lever engages with the cam block to push the contact plate further toward the driven wheel, and the pawl is pushed out by the spring in a direction away from the bottom plate. , The engagement between the claw of the claw block and the claw is released, and a gap is formed between the driven wheel and the contact plate,
The wheel fixing device can be removed from the wheel fixing bottom plate.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a plan view. FIG. 3 is a side view showing a fixed state of the wheels.

In FIG. 1 and FIG.
Groove parallel to the wheel axis on the wheel fixing surface plate laid on top
8a are provided at regular intervals in the front-rear direction of the vehicle. 1
Reference numeral 9 denotes a bottom plate in which a projection 19a is fitted in the groove 18a. A contact plate 23 that contacts the wheel 3 via a bearing 20, a shaft 21, and a bearing 22 is pivotally attached to one end of the bottom plate 19. A claw block 24 having a plurality of claws and a cam block 25 are fixed to the back surface (the back surface side of the contact surface of the wheel 3) of the contact plate 23, and a side plate 26 that contacts the side surface of the wheel 3 on the front surface.
Are fixed to facilitate positioning of the bottom plate 19.
At the other end of the bottom plate 19, a claw 29 that meshes with the claw of the claw block 24 via a bearing 27 and a shaft 28, and a release lever 30 that engages with the cam block 25 to release the meshing of the claw 29. Being pivoted. The claw 29 has two springs 31,
The release lever 30 has one spring 32 and the bottom plate 19 respectively.
And is urged in a direction away from the bottom plate 19. 35 is axis 2
The claw 29 fixed to the shaft 28 is operated by the pedal fixed to one end of the shaft 8. Reference numeral 30a operates the release lever 30 with a pedal protruding from the side of the release lever 30 which is fitted and rotated with the shaft 28.

The spacing and depth of the grooves 18a of the wheel fixing base plate 18 are appropriately selected. The springs 31 and 32 have claws 29,
A spring having any shape and structure may be used as long as the release lever 30 is urged away from the bottom plate 19. The claw 29 and the release lever 30 are rotated around the same shaft 28, but may be separate shafts. In addition, nail 29,
Each of the release levers 30 is operated by a pedal, but may be manually operated by a lever.

In order to fix a wheel by the above-described wheel fixing device, first, a wheel fixing device 36 and a device different from the wheel fixing device, that is, in FIG. 30a, a pedal 35, and a wheel fixing device 37 having a side plate 26 are prepared.

In FIG. 3, after the vehicle is stopped at a predetermined position, a pawl block 24 is positioned in front of and behind the left and right driven wheels 3.
Wheel fixing device 3 meshed with the outermost claw and claw 29
6 and 37, and the projection 19a of the bottom plate 19 is inserted into the groove 1 of the wheel fixing plate 18 with the contact plate 23 approaching the wheel 3.
8a. Next, when the pedal 35 is depressed, the pawl 29 rotates the contact plate 23 toward the wheel 3, meshes with the pawl of the claw block 24, and holds the post-rotation position of the contact plate 23. Is fixed between the wheel fixing devices 36 and 37 on the wheel fixing surface plate 18 as shown in the figure.

To release the wheels 3, the pedal 30a is depressed. The release lever 30 integrated with the pedal 30a engages with the cam block 25 to push the contact plate 23 further toward the wheel 3 so that the engagement between the pawl 29 and the pawl of the pawl block 24 is released. When the pedal 30a is pushed outward from the claw block 24 and the depression of the pedal 30a is stopped, the release lever 30 is also pivotally pushed away from the bottom plate 19 by the spring 32 and pushed out, so that a gap is formed between the wheel 3 and the contact plate 23. The wheel 3 is released. In addition, the wheel fixing device 3
The wheels 6 and 37 can be removed from the wheel fixing platen 18.

[0023]

[Effect of the Invention] The wheel fixing device according to the present invention is small, lightweight and low in height, and does not hit a vehicle fender or bumper.
This has a practical effect that it can be attached and detached very easily only by depressing the pedal.

Further, since the wheel fixing device is fixed to the wheel fixing surface plate without using a rotary fastening member such as a bolt or a nut, the test is performed in a bad environment such as a rainy condition or a low temperature condition. This is particularly effective because less work time is required.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of one embodiment of the present invention.

FIG. 3 is an explanatory view of a fixed state of the wheel according to the above.

FIG. 4 is a schematic explanatory view of a dynamic performance test of a vehicle.

FIG. 5 is an explanatory front view of a conventional wheel fixing device.

FIG. 6 is an explanatory side view of a conventional wheel fixing device.

FIG. 7 is an explanatory front view of another conventional wheel fixing device.

[Explanation of symbols]

 Reference Signs List 18 wheel fixing surface plate 18a groove 19 bottom plate 19a projection 23 contact plate 24 claw block 25 cam block 29 claw 30 release lever 31, 32 spring 36, 37 wheel fixing device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01M 17/00-17/007 B60T 3/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A wheel fixing device for fixing a driven wheel of a vehicle, comprising: a wheel fixing surface plate having grooves parallel to a wheel axis at regular intervals in a longitudinal direction of the vehicle; A bottom plate provided with a projection to be fitted, a contact plate pivotally attached to one end of the bottom plate and having a plurality of claws and a cam block fixed to the back surface and having a front surface in contact with a wheel; and a second end of the bottom plate. The pawl is pivoted and urged in a direction away from the bottom plate by a spring and meshes with the pawl of the pawl block, and a release lever which engages with the cam block to release the pawl engagement. And wheel fixing device.