JPH08282203A - Caster of traveling case - Google Patents

Abstract

PURPOSE: To reduce noise by buffering vibration generated by the rotation of a wheel by the cooperation of a plate spring provided on a wheel device and an elastic body disposed on the plate spring. CONSTITUTION: A wheel device 6 having a plate spring 14, a wheel support means 17 and a wheel 18 is placed in the internal space 20 of a caster cover 5 in such a manner as to be supported by the longitudinal end part of the plate spring, and an elastic piece 7 is disposed on the plate spring 14 in such a manner as to elastically support the plate spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a travel case such as a travel bag such as a travel bag or a ski carrier having a large total weight in which articles are housed inside and a road used for carrying a road or the like while suppressing noise. Regarding the casters of the case.

[0002]

2. Description of the Related Art In a travel case such as a travel bag or ski carrier, the weight of the entire travel case becomes heavy when the articles are stored inside the travel case. In order to carry a travel case that is difficult to carry and has a heavy overall weight, a caster is attached to the travel case and the travel case is carried on a road or the like.

Generally, a caster for a travel case is composed of a wheel device and a caster cover, and the wheel device is rotatably supported by a mounting plate made of an iron plate, a wheel support connected to the mounting plate, and a wheel support. Formed with the wheels. The caster of the travel case is attached by fixing the mounting plate to a predetermined position of the travel case via the caster cover.

[0004]

A caster for a travel case of the above type is mounted by fixing a mounting plate at a predetermined position of the travel case via a caster cover, and is generated by rotation of wheels of a wheel device. The vibration is transmitted from the wheel support to the travel case through the mounting plate,
There is a drawback that considerable noise is generated when a travel case is transported on a road or the like.

The present invention has been made in consideration of the above points, and when the travel case is pulled along the road or the like and conveyed, the vibration generated by the rotation of the wheels is buffered by the elastic body.
An object of the present invention is to provide a caster for a travel case, which is capable of suppressing noise during transportation of the travel case.

[0006]

A caster for a travel case according to the present invention includes a caster cover fixed to the travel case, a leaf spring, a wheel support connected to the leaf spring, and a wheel support rotatably attached to the wheel support. A wheel device having a supported wheel and supporting the longitudinal end of the leaf spring inside the caster cover, and supporting the wheel inside the caster cover so as to project the wheel below the caster cover. And an elastic piece arranged so as to elastically support the leaf spring.

In the caster of the travel case according to the present invention, ribs extending in the longitudinal direction can be provided on both sides of the lower surface of the elastic piece, and bearings can be provided between the leaf spring and the wheel support.

[0008]

In the travel case caster according to the present invention, when the travel case is transported on a road or the like, vibrations generated by the rotation of wheels are applied to a leaf spring provided on the wheel device and an elastic member arranged on the leaf spring. By buffering with the joint action of the body, noise during transportation of the travel case can be kept low.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a state in which the casters 1 and 2 of the present invention are attached to one side surface of the travel bag 3, and a handle 4 is attached to the upper surface of the travel bag 3. A handle (not shown) is provided on the other side surface of the travel bag 3. The wheels of the caster 1 provided on the travel bag 3 are 360
The caster 2 is a freely rotatable caster,
It is a fixed caster with wheels fixed in one direction.

As shown in FIGS. 2 and 3, the flexible caster 1 is composed of three members, a caster cover 5, a wheel device 6 and an elastic piece 7.

The caster cover 5 has an opening 8 at the center of the lower surface, a recess 9 continuous with the opening 8 and an internal space 10.
Has a pair of bosses 11 projecting upward at both ends thereof. The caster cover 5 is provided on the upper edge portion 12 of the travel bag 3
The curved surface corresponding to the surface of the travel bag 3 is arranged along the surface of the travel bag 3 at a predetermined position, and then a screw (not shown) is screwed into the travel bag 3 through the screw insertion hole 13 provided in the boss 11 to thereby travel the travel bag 3 Fixed to.

The wheel device 6 is rotatable in a horizontal plane through a ball spring 16 on a leaf spring 14 made of carbon steel and having a thickness of 0.5 to 0.6 mm, and a shaft 15 fixed to the leaf spring 14. Wheel support 17 attached to the wheel support 17
The wheel 18 is provided at a position distant from the center of rotation of the wheel and rotates in the range of 360 degrees. The leaf spring 14 has notches 19 and 19 at both ends, and the notches 19 and 19 surround the boss 11 so as to surround the inner space 1 of the caster cover 5.
It is placed on the support portion 20 provided at 0. Therefore, the wheels 18 provided on the wheel support 17 are mounted on the caster cover 5
It projects downward from the opening 8 and rotates in a range of 360 degrees on a circle at a certain distance from the center of rotation. By connecting the wheel to the leaf spring 14 supported by the support portion 20 provided in the internal space 10 of the caster cover 5 via the wheel support 17, the vibration applied to the wheel 18 is damped by the leaf spring 14.

The elastic piece 7 is formed of an elastic material such as vinyl acetate resin or synthetic rubber, and has a leaf spring 14 in the inner space of the caster cover 5 and a travel bag 3.
4, the holes 21 and 21 into which the bosses 11 are inserted are formed at both ends, and the opening 22 for preventing the shaft 15 from coming into contact with the central part when the shaft 15 moves up and down as shown in FIG. Are formed. The elastic piece 7 has ribs 23, 23 having a thickness of 3.5 mm to 4.0 mm and extending in the longitudinal direction on both sides of the lower surface. The ribs 23 provided on the elastic piece 7 are provided on the wheel support 17 when the wheel 18 provided on the wheel support 17 rotates 180 degrees, that is, when the wheel is positioned in a direction orthogonal to the longitudinal direction.
Acts so as not to contact the caster cover 5. The elastic piece 7 cooperates with the leaf spring 14 to further dampen the vibration applied to the wheel 18 by the elastic force of the elastic piece 7.

That is, by appropriately selecting the material and the plate thickness of the leaf spring 14 and the material and the thickness of the elastic piece 7, the vibration applied to the wheel 18 can be considerably damped.

However, when the flexible caster 1 is attached to the travel case 3 and travels on a road or the like in one direction, the vibration generated by the rotation of the wheels 18 of the wheel device 6 causes a plate provided on the wheel device 6. Since the spring 14 and the elastic piece 7 arranged on the leaf spring 14 cooperate to buffer the spring 14, noise during transportation of the travel case 3 can be suppressed to a low level.

When the traveling direction of the travel case 3 is changed, the direction of the wheel support 17 of the wheel device 6 is changed,
The force applied from the wheel 18 to the wheel support 17 acts in the lateral direction of the leaf spring 14 via the wheel support 17, but on both sides of the elastic piece 7 arranged on the leaf spring 14 in the longitudinal direction. Since the extending rib is formed, the leaf spring 14 does not directly contact the caster cover 5.

A flexible caster 1 having a rubber hardness of 65 to 67 and a diameter of 32 mm is mounted, and a flexible caster 1 having a rubber hardness of 65 to 67 and a diameter of 37 mm is mounted.
According to the result of the test by the load swing running test method according to IS-103B, the free-form caster 1 is placed on the step
Even after passing 0400 times, there is no change in the outer shape and inner diameter of the wheel,
Rubber peeling of the wheel did not occur.

The fixed caster 2 is, as shown in FIGS. 5 and 6, a caster cover 5a and a wheel device 6a.
And elastic piece 7a.

The caster cover 5a has an opening 8a at the center of the lower surface and a pair of bosses 11a projecting upward at both ends of the internal space 10a. The upper edge portion 12a of the caster cover 5a has a curved surface corresponding to the surface of the travel bag 3, and is arranged along the surface of the travel bag 3 and then passes through the screw insertion hole 13a provided in the boss 11a, which is not shown. It is fixed to the travel bag 3 with screws.

The wheel device 6a includes a leaf spring 14a made of carbon steel and having a thickness of 0.5 to 0.6 mm, and the leaf spring 14a.
The wheel support 17a is fixed to the wheel support 17a and the wheel 18a provided on the wheel support 17a. Notches 19a, 19a are formed at both ends of the leaf spring 14a. The leaf spring 14a is mounted on a support portion 20a provided in the internal space 10a of the caster cover 5a so that the notches 19a, 19a surround the boss 11a. Placed. Therefore, the wheel 18a provided on the wheel support 17a attached to the leaf spring 14a is
The caster cover 5a projects downward from the opening 8a. In this way, by connecting the leaf spring 14a to the wheel support 17a, the vibration applied to the wheel 18a is generated by the leaf spring 1a.
It is attenuated by 4a.

The elastic piece 7a is formed of an elastic material such as vinyl acetate resin or a rubber material, and has the same structure as the elastic piece 7 shown in FIG.

When the fixed caster 1 is attached to the travel case 3 and the vehicle is run on a road or the like, the wheels 18a are used.
The vibration generated by the rotation of the plate spring 6a is provided on the wheel device 6a and the elastic piece 7 arranged on the plate spring 14a.
It is buffered by the synergistic action of a, and the noise during transportation of the travel case is suppressed to a low level.

Therefore, the flexible caster 1 of the present invention
When the fixed caster 2 and the fixed caster 2 are attached to one side of the travel bag 3 as shown in FIG. 1 and the travel bag 3 is conveyed by pulling a road or the like, the vibration generated by the rotation of the wheels 18 of the flexible caster 1 is The vibration generated by the rotation of the wheel 18a of the fixed caster 2 is damped by the joint action of the leaf spring 14 provided on the wheel device 6 and the elastic body 7 arranged on the leaf spring 14, and is provided on the wheel device 6a. By the joint action of the leaf spring 14a and the elastic body 7a arranged on the leaf spring 14a, the noise can be suppressed to a low level when the travel bag 3 is transported.

In the above embodiment, the flexible caster 1 and the fixed caster 2 are attached to the travel bag 3.
The same applies when the universal caster 1 and the fixed caster 2 are attached to the ski carrier case, and the same effect can be obtained with the universal caster 1 alone or the fixed caster 2 alone.

[0026]

As described above, according to the present invention, the caster cover fixed to the travel case, the leaf spring, the wheel support connected to the leaf spring, and the wheel support rotatably supported by the wheel support. And a wheel device in which the longitudinal ends of the leaf springs are supported inside the caster cover and the wheels are arranged so as to project below the caster cover, and a plate supported inside the caster cover. Since it has an elastic piece arranged so as to elastically support the leaf spring on the upper side of the spring, when the travel case is attached at a predetermined position and the travel case is pulled along a road or the like, the wheel is rotated by rotation. The generated vibration is buffered by the joint action of the leaf spring provided on the wheel device and the elastic body arranged on the leaf spring, and the noise during transportation of the travel case is 1/3 to 1/1 that of the normal one.
It is about 4 and noise can be suppressed to a low level.

[Brief description of drawings]

FIG. 1 is a perspective view of a travel bag equipped with casters according to the present invention.

FIG. 2 is an exploded perspective view of a flexible caster according to the present invention.

FIG. 3 is a side view showing a cross-section of a part of the caster according to the present invention.

FIG. 4A is a plan view of an elastic piece of a flexible caster according to the present invention. (B) is the same side view. (C) is sectional drawing which followed the cc line.

FIG. 5 is an exploded perspective view of a fixed caster according to the present invention.

FIG. 6 is a side view showing a cross-section of a part of a fixed caster according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible caster 2 Fixed caster 3 Travel bag 5 Caster cover 6 Wheel device 7 Elastic piece 14 Leaf spring 16 Ball bearing 17 Wheel support 18 Wheel 20 Support part 22 Rib

Claims (3)

[Claims] 1. A caster cover having a caster cover fixed to a travel case, a leaf spring, a wheel support connected to the leaf spring, and a wheel rotatably supported by the wheel support. The wheel device is arranged so as to support the longitudinal end portion of the leaf spring and project the wheel below the caster cover, and the leaf spring is elastically provided above the leaf spring supported inside the caster cover. A caster for a travel case having a resilient piece arranged to support. 2. The caster for a travel case according to claim 1, wherein ribs extending in the longitudinal direction are provided on both sides of the lower surface of the elastic piece. 3. The caster for a travel case according to claim 1, wherein a bearing is provided between the leaf spring and the wheel support.