KR20090080591A - damping assembly for wheel and roller- blade using the same - Google Patents

Abstract

A shock-absorbing structure for a small wheel having a simple structure is provided, and a roller blade using the same is provided. A shock-absorbing and supporting structure of a wheel comprises: a wheel(2); a shaft member installed in a hub of the wheel by means of a hub bearing; a fixing plate(6) fixedly adhered to the bottom surface of an object to be installed; and elastic members(14) each of which consists of a fixed end(16) fixedly adhered onto the bottom surface of the fixing plate and a moving end(18) connected to both sides of the shaft member of the wheel. The shock-absorbing and supporting structure of the wheel is vertically moved by rotating the shaft member of the wheel while the elastic member is elastically constricted when an impact is applied to the shock-absorbing and supporting structure of the wheel from the ground.

Description

Damping assembly for wheel and roller-blade using the same

The present invention relates to a buffer support structure of a wheel, and more particularly, to a buffer support structure of a wheel and a roller blade using the same so that the wheel can swing in the vertical direction when the wheel passes the uneven surface.

Rollers, casters or small wheels (hereinafter referred to as 'wheels') are widely installed on furniture such as lockers and chairs or on the bottom of general industrial items such as workbenches and carts, and can easily move a predetermined weight body horizontally. When used. In addition, it is widely used in leisure goods such as roller skates, roller boards, roller blades.

The large wheels installed in the vehicle are usually installed together with a suspension device to absorb or cushion the impact of the ground, but it is difficult to install such a complicated suspension device in a small wheel having a diameter of 100 mm or less. However, the need for means for absorbing impacts from the ground even in small wheels is recognized. Therefore, there have been intermittent efforts to impart elasticity or cushioning action to wheels such as roller skates, and most of them have used plate or coil springs in the form of classic flat plates. However, the shape of the spring is limited, and because it has its own weight and volume, manufacturing and use has not been realized.

An object of the present invention for the above problem is to provide a buffer structure for a small wheel of a simple structure. There should be no significant increase in volume and weight, and the action should be stable. In addition, the part that is exposed to the outside should not give a disgusting appearance. Another object of the present invention is to provide a cushioning support structure of a wheel suitable for use in a roller blade well known as a leisure article and a roller blade using the same.

The above purpose, the wheel; A shaft member installed on the hub of the wheel through a hub bearing; A fixed plate fixedly attached to the bottom of the object to be installed; Spring steel in the form of a plate is bent in a roughly "∧" or "∩" shape, and is composed of a fixed end and a flow end, the fixed end being fixedly attached to the bottom of the fixed plate, and the flow end respectively on both sides of the shaft member of the wheel. It includes an elastic member connected to, by the shock absorbing support structure of the wheel, characterized in that the elastic member is elastically squeezed when the impact from the ground is applied, the shaft member of the wheel can swing and flow Is achieved.

Another object of the invention is; wheel; A shaft member installed on the hub of the wheel through a hub bearing; A fixed plate fixedly attached to the bottom of the object to be installed; A support plate which is fixed to the bottom of the fixing plate at an interval with a thickness greater than or equal to the thickness of the wheel to be perpendicular to the fixing plate, and a lower support plate having an arc-shaped induction hole inclined at a lower portion thereof; It is installed on the outside of the support plate, respectively, is formed by bending the spring steel in a roughly "∧" or "∩" form, one end of the fixed end is fixedly attached to the bottom of the fixing plate, the other end of the flow end penetrates the induction hole And an elastic member connected to the shaft member of the wheel which protrudes, the elastic member being elastically narrowed when an impact from the ground is applied to the shaft member so that the shaft member can swing and rise along the guide hole. It is achieved by the buffer support structure of the wheel characterized in that.

Another object of the present invention is achieved by a roller blade which can be buffered by attaching a plurality of cushioning support structures of the wheels to the bottom of a roller blade shoe.

According to the above configuration, there is provided a wheel support structure having an extremely simple buffer structure. That is, there is no problem of complicated structure and unreasonable increase in weight by installing the coil spring. The wheel according to the present invention can be used to be attached to a variety of articles as a thread, in particular can be usefully used in roller blades, carts and the like.

Hereinafter, with reference to the accompanying drawings in the detailed description of the present invention will be described in more detail. 1 is a perspective view showing a buffer support structure of a wheel according to an embodiment of the present invention. Figure 2 is a side view of the cushion support structure of the wheel according to an embodiment of the present invention, Figure 3 is a side cross-sectional view of the buffer support structure of the wheel according to an embodiment of the present invention. Figure 4 is a side view of the roller blade showing a state in which the wheel support structure of the present invention is applied to the roller blade.

The wheels 2 are usually small in diameter of about 100mm, and the grounding portion is made of rubber in consideration of slippage and cushioning. Occasionally tires may be used. The wheels are disc shaped but spherical rollers can sometimes be replaced. As such, any selection or modification of the wheels 2 may not limit the scope of the invention.

A hub is usually provided at the center of rotation of the wheel 2, and the shaft member 4 is fitted to the hub through a hub bearing. Therefore, the wheel 2 is in a state capable of freely rotating about the fixed shaft member (4). Both ends of the shaft member 4 are installed to protrude from both sides of the wheel and can be such that there is no flow of the wheel along the longitudinal direction of the shaft member 4 by a known technique.

The fixing plate 6 is fixedly attached to the bottom of the object to be installed. A conventional attachment method may be a method of drilling several coupling holes 8 in the fixing plate 6 and fastening bolts or screws to each of the coupling holes 8. The object may be a cart, a roller blade shoe, or the like.

" 형태로 절곡된 금속판재를 용접에 의해 접착함에 의해 일체로 형성된다. 지지판(10)은 바퀴의 두께 이상의 간격으로 이격되게 설치되며 바퀴(2)가 그 사이에 끼워지게 된다. The supporting plate 10 is fixedly installed on the bottom of the fixing plate 6 so that the supporting plate 10 is perpendicular to the fixing plate 6. As shown in Fig. 3, the support plate 10 is "

It is integrally formed by welding the metal plate bent in the form by welding. The support plate 10 is spaced apart at intervals greater than the thickness of the wheel and the wheel 2 is sandwiched therebetween.

Induction holes 12 are perforated symmetrically with each support plate 10 below. The guide hole 12 is preferably rectangular and curved in an arc shape. In addition, the guide hole 12 is perforated inclined with respect to the ground. The reason is related to the elastic member 14 described later.

Elastic members 14 made of spring steel are provided symmetrically on both sides of the support plate 10. The elastic member 14 is composed of a fixed end 16 and a flow end 18 by bending spring steel in the form of an elongated plate in a substantially "∧" shape or "∩" shape. One end of the fixed end 16 is fixedly attached to the bottom of the fixing plate 6 by welding or the like, and the other end of the flow end 18 is connected to the shaft member 4 of the wheel which protrudes through the guide hole 12. . At times, the elastic member 14 and the fixed plate 6 may be integrated.

The end portion 18a of the flow end 18 of the elastic member 14 may have a circular curled shape. The dried end 18a may be fixed by welding. The shaft member 4 of the wheel is fitted to the end portion 18a of the flow end 18 of the elastic member. The fastening means, such as the bolt 20 and the nut, are respectively fastened to both ends of the shaft member 4 protruding from the strap portion 18a of the flow stage so that the flow stage 18 and the shaft member 4 are fixed to each other.

The connection method of the elastic member 14, in particular the flow end 18 and the shaft member 4 may be variously modified. Although not shown, a portion to which the shaft member 4 is coupled may be manufactured separately from the elastic member 14 and assembled with the elastic member 14. In this case, the portion connected to the shaft member 4 may be used a material other than spring steel (stainless steel, etc.).

As shown in FIGS. 1 and 2, the support plate 10 is slimmed except for a portion for forming the arc-shaped guide hole 12 to reduce weight and improve aesthetics. The support plate 10 is merely an auxiliary function and is not an essential component in the present invention. The user may selectively employ the support plate 10 according to the use purpose of the wheel. The structure in which the support plate 10 is omitted is shown in FIG. 5. As shown in FIG. 5, the fixed plate 6 and the elastic member 14 are integrated to provide a shock-absorbing support structure of the wheel which is much simpler.

Referring to the operation state through 2 as follows.

When a force is applied downward from the top of the fixing plate 6 or an impact is applied upwards from the bottom of the wheel due to the uneven portion of the ground, the elastic member 14 is elastically constricted. Since the fixed end 16 of the elastic member is fixed to the fixed plate 6, the flow end 18 is bent while turning counterclockwise with the bending point 14a of the elastic member as the center of rotation. Accordingly, the shaft member 4 is lifted while rotating in a radius similar to the length of the flow stage 18. The guide hole 12 is in the shape of an arc so as to fit the trajectory of the end portion 18a of the flow stage. The length of the induction hole 12 may be longer depending on the designer's choice.

Therefore, the wheel (2) is to be in a state that can be moved up and down elastically relative to the fixed plate (6). When a large force or impact greater than the prescribed value is applied, the shaft member 4 comes into contact with the upper end 12a of the guide hole. This will be the state where buffering ends.

It is preferable that lubrication means be applied to the contact point between the shaft member 4 and the side end portion 12b of the guide hole. This lubrication means may be a bearing installed on the shaft member 4 or may be only lubricating oil.

Figure 4 is a side view of the roller blade showing a state in which the wheel support structure of the present invention is applied to the roller blade.

Shoes 30 are not the same as those applied to general roller blades or roller skates. Additional components such as brakes are also similar to conventional ones. Several wheels 2 may be installed on one fixed plate 6 'as shown.

When the wheels 2 of the roller blades collide with the obstacles D, which may be on the ground E, they are pushed to the rear (left in the drawing) and installed to be lifted upwards. This allows more flexible responses to the obstacles (D) to alleviate the impact. This is because the direction in which the force is applied coincides with the movement direction P of the roller blade.

The core of the present invention is to use the bent leaf spring member as an elastic member. Various modifications are envisioned using this core technical idea, but all of them fall within the scope of the present invention.

1 is a perspective view showing a buffer support structure of a wheel according to an embodiment of the present invention.

Figure 2 is a side view of the cushion support structure of the wheel according to an embodiment of the present invention, Figure 3 is a side cross-sectional view of the buffer support structure of the wheel according to an embodiment of the present invention.

Figure 4 is a side view of the roller blade showing a state in which the wheel support structure of the present invention is applied to the roller blade.

Figure 5 is a side view showing a buffer support structure of a wheel according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2 ; Wheel 4; Shaft member

6,6 '; Fixed plate 10; Support plate

12; Guide hole 14; Elastic member

16; Fixed end 18; Floating stage

30; shoes

Claims (3)

Wheels 2; A shaft member 4 installed on the hub of the wheel through a hub bearing; A fixed plate 6 fixedly attached to the bottom of the object to be installed; Spring steel in the form of a plate is bent in a roughly " ∧ " or " ∩ " shape to be composed of a fixed end 16 and a flow end 18, and the fixed end 16 is fixedly attached to the bottom of the fixed plate 6 The flow stage 18 includes elastic members 14 connected to both sides of the shaft member 4 of the wheel, and the elastic members 14 elastically constrict when an impact from the ground is applied. The buffer member structure of the wheel, characterized in that the structure that can be moved up and down while the shaft member (4) of the wheel pivots. Wheels 2; A shaft member 4 installed on the hub of the wheel through a hub bearing; A fixed plate 6 fixedly attached to the bottom of the object to be installed; The support plate is fixed to the bottom of the fixing plate 6 to be perpendicular to the fixing plate 6 at intervals greater than or equal to the thickness of the wheels 2, and a support plate in which an arc-shaped guide hole 12 is inclined with respect to the ground. 10; As installed on the outside of the support plate 10, the spring steel in the form of a plate is bent in a roughly "∧" or "∩" form consisting of a fixed end 16 and a flow end 18, the fixed end 16 ) Is fixedly attached to the bottom of the fixing plate 6, the flow end 18 includes an elastic member 14 connected to the shaft member 4 of the wheel protruding through the guide hole 12 as ; The elastic member 14 is elastically constricted when an impact from the ground is applied, the shaft member 4 is a structure that can be moved up and down while moving along the guide hole 12 of the wheel Buffer support structure. The roller blade of claim 2, wherein the buffer support structure of the wheel is installed on the bottom of the shoe (30).

Images