KR20160136853A - Non-pneumatic wheels - Google Patents

Non-pneumatic wheels Download PDF

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Publication number
KR20160136853A
KR20160136853A KR1020150070968A KR20150070968A KR20160136853A KR 20160136853 A KR20160136853 A KR 20160136853A KR 1020150070968 A KR1020150070968 A KR 1020150070968A KR 20150070968 A KR20150070968 A KR 20150070968A KR 20160136853 A KR20160136853 A KR 20160136853A
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KR
South Korea
Prior art keywords
wheel
bearings
wheel frame
frame
elastic members
Prior art date
Application number
KR1020150070968A
Other languages
Korean (ko)
Inventor
유화열
Original Assignee
주식회사 코휠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 코휠 filed Critical 주식회사 코휠
Priority to KR1020150070968A priority Critical patent/KR20160136853A/en
Publication of KR20160136853A publication Critical patent/KR20160136853A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/26—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces comprising resilient spokes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2380/00—Bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/131—Vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/133—Noise

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The present invention relates to a non-pneumatic wheel for sports goods, such as a caster and inline skates, for a wagon, such as a cart, and transportation means and, more specifically, to a non-pneumatic tire, capable of not directly transferring a load applied on a wheel during operation to a wheel shaft, improving a shock absorbing function by letting the wheel shaft move up and down according to the load applied on the wheel, and reducing vibration and noise. According to the present invention, the non-pneumatic wheel comprises: a wheel frame in which a penetration hole inside of which a wheel shaft is installed is formed; first and second bearings inserted between the wheel shaft and a wheel frame; and a tire coupled to an outer side of the wheel frame, wherein a space part is formed, which lets the wheel shaft move between the penetration hole of the wheel frame and the first and the second bearings.

Description

[0001] Non-pneumatic wheels [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-pneumatic wheel that can be used as a wheel for a fitness machine such as a caster or an inline skate, a wheel for a wheel for a cart, The wheel axle can be moved up and down according to the load applied to the wheel to improve the shock absorbing function and reduce vibration and noise, .

Unlike conventional pneumatic wheels or tires, the non-pneumatic wheel is a new type of wheel that can replace the role of air pressure by using spokes. Compressed air is not used, It is possible to prevent the occurrence of accidents caused by the accident.

Such non-pneumatic wheels are generally used in a smaller number of materials, have a simple structural design, and can be used in an air-free space.

In addition, the non-pneumatic wheel is mainly used for a relatively small wheel such as a wheel for a fitness machine such as a caster, an inline skate, or a cart for a cart, etc. Generally, a wheel shaft, a wheel frame coupled to the outside of the wheel shaft A bearing inserted between the wheel axle and the wheel frame, and a tire coupled to the outside of the wheel frame.

However, since the conventional non-pneumatic wheel has a structure in which the wheel axle, the wheel frame and the bearing are both in close contact with each other, friction occurs severely when the wheel is driven, and a load applied to the wheel is directly transmitted to the wheel axle Shock absorption is not properly performed, and vibration and noise are generated severely.

1. Korean Registered Patent No. 10-1015363 (Bulletin of Mar. 16, 2011)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a shock absorber capable of moving up and down the wheel axis according to a load applied to wheels, The present invention provides a non-pneumatic wheel that allows the user to operate the vehicle.

In addition, the present invention provides a non-pneumatic wheel capable of improving durability by preventing a load applied to a wheel from being directly transmitted to a wheel shaft during driving by forming a space in a coupling portion between the wheel shaft and the wheel frame, There is a purpose.

It is another object of the present invention to provide a non-pneumatic wheel capable of reducing noise and vibration due to friction by inserting an elastic member between a wheel frame and a bearing.

According to an aspect of the present invention,

A first and a second bearings inserted between the wheel axle and the wheel frame, and a tire coupled to the outside of the wheel frame, wherein the wheel comprises a through- And a space is formed between the through-hole of the wheel frame and the first and second bearings to allow the wheel axle to move upward and downward.

In this case, ring-shaped first and second elastic members are inserted between the wheel frame and the first and second bearings.

Here, on both inner side surfaces of the end portions of the wheel frame, a release preventing portion for preventing the first and second elastic members from being separated is protruded.

The first and second elastic members are characterized in that the longitudinal sides thereof have any one of '8' shape, '⊃' shape, '>' shape or 'D' shape.

A plurality of grooves are formed on the outer circumferential surface of the first and second elastic members in the direction of the center of the wheel.

In addition, the wheel frame may include a body portion having a two-tiered structure such that a longitudinal section thereof has an 'I' shape, and a protruding portion protruding inward of the body portion. And a through hole is formed.

In addition, first and second cover members, which cover both side surfaces of the wheel frame, are coupled to the outer sides of the first and second bearings.

According to the present invention, since the space formed in the coupling portion between the wheel shaft and the wheel frame allows the wheel axle to move up and down according to the load applied to the wheel during driving, So that the load applied to the wheels during driving is not directly transmitted to the wheel shaft, thereby improving durability.

In addition, according to the present invention, friction between the bearing and the wheel frame, and friction between the wheel shaft and the wheel frame due to the elastic member inserted between the wheel frame and the bearing and the space formed in the coupling portion between the wheel shaft and the wheel frame So that noise and vibration can be reduced during driving.

1 is a perspective view of a non-pneumatic wheel according to the present invention;
Figure 2 is an exploded perspective view of the present invention shown in Figure 1;
3 is a side cross-sectional view of the present invention shown in Fig.
Fig. 4 is a side sectional view showing in detail the wheel frame of the present invention shown in Fig. 1. Fig.
5 (a) to 5 (d) are longitudinal cross-sectional perspective views showing various embodiments of the elastic member of the present invention shown in Fig. 2;

Hereinafter, various embodiments of a non-pneumatic wheel according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view showing a non-pneumatic wheel according to the present invention, Fig. 2 is an exploded perspective view of the present invention shown in Fig. 1, Fig. 3 is a side sectional view of the present invention shown in Fig. 5 (a) to 5 (d) are longitudinal cross-sectional perspective views showing various embodiments of the elastic member of the present invention shown in Fig. 2; Fig.

The present invention prevents a load applied to a wheel from being directly transmitted to a wheel shaft during driving and allows a wheel shaft to move up and down according to a load applied to the wheel to improve a shock absorbing function, The present invention relates to a non-pneumatic wheel 100 that is capable of reducing noise and includes a wheel frame 110, first and second bearings 120 and 130, and a tire 190, as shown in FIG. .

More specifically, the wheel frame 110 supports a load generated at the time of driving the non-pneumatic wheel 100, and includes a wheel shaft (not shown), first and second bearings 120 and 130, Hole 116 to be inserted and coupled.

As shown in FIG. 4, the wheel frame 110 includes a body portion 112 and a protrusion 114. The body portion 112 has an I-shape in its longitudinal section, The protrusion 114 protrudes to the inside of the body portion 112 to form a through hole 116 at the center portion of the body 100. [ .

A plurality of through holes 113 may be formed between the body portion 112 and the protrusion 114 so as to be spaced apart from each other by a predetermined distance. And serves to reduce the load transmitted from the wheel frame 110 to the wheel shaft through the first and second bearings 120 and 130.

That is, the through hole 113 is configured to function as a buffer between the body 112 and the protrusion 114.

On the other hand, first and second space portions 116a and 116b are formed on both sides of the protruding portion 114. Inside the first and second space portions 116a and 116b, (120, 130) and first and second elastic members (140, 150) to be described later.

Next, the first and second bearings 120 and 130 are coupled between the wheel axle and the wheel frame 110 so as to surround the outer circumference of the wheel axle (not shown) to support the wheel axle to rotate smoothly The shafts 122 and 132 of the first and second bearings 120 and 130 are configured to abut each other at the inside of the through hole 116. In addition,

As shown in FIG. 3, the first and second bearings 120 and 130 coupled to the through hole 116 of the wheel frame 110 and the wheel shaft, more specifically, the first and second bearings 120 and 130 A space 180 is formed between the axes 122 and 132 of the wheel 100 so that the load transmitted by the wheel frame 110 when the wheel 100 is driven does not directly act on the wheel axle So that the wheel shaft 100 can be moved up and down by a load transmitted by the wheel frame 110, thereby absorbing shocks applied to the wheel 100.

That is, when the wheel axle, the first and second bearings 120 and 130, and the wheel frame 110 are closely coupled to each other as in the related art, the load applied by the wheel frame 110 during the driving of the wheels, 2 bearings 120 and 130 are directly transmitted to the wheel shafts so that the shock absorbing function of the wheels is deteriorated and the noise and vibration due to friction are severely generated and the load applied to the first and second bearings 120 and 130 and the wheel shafts The through hole 116 of the wheel frame 110 and the axes 122 and 132 of the first and second bearings 120 and 130 coupled to the outer side of the wheel axle have a problem in that the durability of the wheel is deteriorated. It is possible to move the wheel axle up and down when a load is generated as described above, so that the above problems can be solved.

The first and second space portions 116a and 116b formed on both sides of the protrusion 114 of the wheel frame 110 between the wheel frame 110 and the first and second bearings 120 and 130, The first and second elastic members 140 and 150 are inserted into the first and second elastic members 140 and 150 so as to surround the outer peripheral surfaces of the first and second bearings 120 and 130, respectively.

That is, the first and second elastic members 140 and 150 are inserted between the wheel frame 110 and the first and second bearings 120 and 130 so that a load generated when the wheel 100 is driven is transmitted to the wheel frame 110 The first and second bearings 120 and 130 are made of an elastic material, such as rubber or synthetic resin, to absorb shocks so that they can not be directly transmitted to the first and second bearings 120 and 130 through the wheel shafts.

The first and second elastic members 140 and 150 are formed by friction between the wheel frame 100 and the first and second bearings 120 and 130 by blocking the direct contact between the wheel frame 110 and the first and second bearings 120 and 130. [ And also serves to reduce noise.

5 (a) to 5 (d), the first and second elastic members 140 and 150 may have a shape of '8', '⊃', '>' or 'D' The shape of the longitudinal section of the first and second elastic members 140 and 150 may be changed according to the purpose of use of the wheel 100. [

That is, depending on the purpose of use of the wheel 100, the load applied to the wheel 100 is changed during driving. Therefore, when a relatively low load is applied, the first and second When the first and second elastic members 140 and 150 are used and the first and second elastic members 140 and 150 having the '8' or 'D' The first and second elastic members 140 and 150 having various cross-sectional shapes according to the load can be used.

2, a plurality of grooves 142 and 152 may be formed on the outer surfaces of the first and second elastic members 140 and 150. The grooves 142 and 152 may be formed in the center of the wheel 100 So as to suppress deformation due to a load applied to the wheel 100 to absorb the shock and to reduce the occurrence of vibration due to deformation of the first and second elastic members 140 and 150. [

That is, when the wheel 100 is driven, the load acts on the center of the wheel 100, so that a plurality of grooves 142 and 152 are formed on the outer surface of the first and second elastic members 140 and 150 in the direction of the center of the wheel 100 So that the grooves (142, 152) can function as a kind of reinforcing member.

On the inner side surfaces of both end portions of the wheel frame 110, a separation preventing portion 118 is protruded toward the center of the wheel 100 and inserted into the first and second space portions 116a and 116b. So that the second elastic members 140 and 150 can be prevented from coming off.

Next, the tire 190 is made of a material such as rubber and is coupled to the outer surface of the wheel frame 110, and the structure is conventionally used, and thus a detailed description thereof will be omitted.

2, the first and second cover members 160 and 170 are coupled to the outer sides of the first and second bearings 120 and 130. The first and second cover members 160 and 170 are engaged with the first and second bearings 120 and 130, The first and second bearings 120 and 130 and the first and second bearings 120 and 130 and the first and second bearings 120 and 130 and the first and second bearings 120 and 130, And serves to prevent noise generated by friction between the members 140 and 150 or friction between the first and second bearings 120 and 130 and the through hole 116 of the wheel frame 110.

At the center of the first and second cover members 160 and 170 are formed through holes 162 and 172 to which a wheel shaft is coupled and the first and second bearings 160 and 170 are inserted into the first and second cover members 160 and 170, The engaging portions 164 and 174 engaging with the engaging portions 120 and 130 are protruded.

Thus, according to the non-pneumatic wheel 100 of the present invention as described above, due to the space portion 180 formed at the coupling portion between the wheel shaft and the wheel frame 110, The wheel shaft is configured to be able to move upward and downward to improve the shock absorbing function, and the load applied to the wheel during driving can be prevented from being directly transmitted to the wheel shaft, 130 and the wheel frame 110 by the elastic members 140 and 150 inserted between the bearings 120 and 130 and the bearings 120 and 130 and the space 180 formed at the coupling part between the wheel axle and the wheel frame 110. [ And the occurrence of friction between the wheel axle and the wheel frame 110 is minimized, so that noise and vibration during driving can be reduced.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-pneumatic wheel that can be used as a wheel for a fitness machine such as a caster or an inline skate, a wheel for a wheel for a cart, The wheel axle can be moved up and down according to the load applied to the wheel to improve the shock absorbing function and reduce vibration and noise, .

100: (non-pneumatic) wheel 110: wheel frame
112: body portion 113: through hole
114: protrusions 116, 162, 172: through-hole
116a: first space portion 116b: second space portion
118: departure prevention portion 120: first bearing
122, 132: shaft 130: second bearing
140: first elastic member 142,152: groove
150: second elastic member 160: first cover member
170: second cover member 164, 174:
180: Space section 190: Tire

Claims (7)

A first and a second bearings inserted between the wheel axle and the wheel frame, and a tire coupled to the outside of the wheel frame, wherein the wheel comprises a through- ,
Wherein a space is formed between the through-hole of the wheel frame and the first and second bearings to allow the wheel axle to move up and down.
The method according to claim 1,
And a ring-shaped first and second elastic members are inserted between the wheel frame and the first and second bearings.
3. The method of claim 2,
Wherein the first and second elastic members are protruded from the inner side surfaces of both end portions of the wheel frame to prevent the first and second elastic members from being separated from each other.
3. The method of claim 2,
Wherein the first and second elastic members have a longitudinal cross-section of any one of '8' shape, '⊃' shape, '>' shape or 'D' shape.
5. The method of claim 4,
Wherein a plurality of grooves are formed on the outer circumferential surface of the first and second elastic members in the direction of the center of the wheel.
The method according to claim 1,
Wherein the wheel frame includes a body portion having a two-tiered structure in which the longitudinal section has an 'I' shape, and a protruding portion protruding inwardly from the body portion, wherein a plurality of through holes are formed between the body portion and the protruding portion, Is formed on the outer peripheral surface of the wheel.
The method according to claim 1,
And the first and second cover members are coupled to the outer sides of the first and second bearings to cover both sides of the wheel frame.
KR1020150070968A 2015-05-21 2015-05-21 Non-pneumatic wheels KR20160136853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150070968A KR20160136853A (en) 2015-05-21 2015-05-21 Non-pneumatic wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150070968A KR20160136853A (en) 2015-05-21 2015-05-21 Non-pneumatic wheels

Publications (1)

Publication Number Publication Date
KR20160136853A true KR20160136853A (en) 2016-11-30

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Country Status (1)

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