CN1740013A

CN1740013A - Wheel structure

Info

Publication number: CN1740013A
Application number: CN 200410057140
Authority: CN
Inventors: 吴春雨
Original assignee: DONGGUAN GUANXIN CHILD ARTICLE Co Ltd
Current assignee: DONGGUAN GUANXIN CHILD ARTICLE Co Ltd
Priority date: 2004-08-24
Filing date: 2004-08-24
Publication date: 2006-03-01
Anticipated expiration: 2024-08-24
Also published as: GB2417530A; CN100339258C; GB0516704D0

Abstract

The wheel structure includes one shaft seat, one wheel, one shaft, one braking element, etc. The wheel is assembled outside the ring edge of the shaft seat, and the braking element is located in the holding space of the wheel. The braking element may rotate synchronously with the wheel. When the wheel rotates in normal rotation speed, the braking element has its braking surface not contacting with the inside of the ring edge of the shaft seat. When the wheel rotates at speed over certain set value, the braking element will move radially to contact the inside of the ring edge of the shaft seat owing to the centrifugal force caused by the rotating wheel, and this will reduce the rotation speed of the wheel and reach active braking effect.

Description

Wheel structure

Technical field

The present invention relates to a kind of wheel structure, particularly a kind of wheel structure that can limit the rotating speed of wheel.

Background technology

In the streets there are products such as many for example perambulators, baby walker, hand barrow to come out at present, these products be applied to widely general life arround, its main demand is except functional and convenience, most important nothing more than being exactly safety, because these products for example are applied on one's body child or the women and children mostly,, may jeopardize user's safety if safety is not good enough, wherein, whether to meet safety be an important topic to the wheel structure of these products.

Applied wheel structure has many types in the above-mentioned product, can't state one by one at this, in for example general baby walker, the wheel structure of prior art mostly can only provide and make the basic function that can advance, if but run into when the user when using baby walker, when the rotating speed of its wheel structure is too fast and uncontrollable, tend to cause the baby walker get out of hand, and then the baby is come to harm, the rotating speed that the baby walker that has can provide braking system to guarantee its wheel structure is unlikely excessive, but such braking system also needs the user to operate to begin to achieve the goal, when the user not at the scene, even if or the user at the scene, but use because of other factors when improper, also can meet accident unavoidably, as seen the active safety of its wheel structure is a kind of technology of being badly in need of solving really.

Summary of the invention

The technical problem to be solved in the present invention is, a kind of wheel structure is provided, and can be applied on the car, and its wheel structure has active safety, takes turns rotor speed when too fast when it, and wheel brake automatically guarantees that to reduce its rotating speed the speed of car is unlikely too fast.

Another technical matters that the present invention will solve is, a kind of wheel structure is provided, and replys just often when the wheel rotor speed, and wheel also can recover normal speed, provides car to have normal speed and advances.

For solving the problems of the technologies described above, the invention provides a kind of wheel structure, it comprises a wheel body, and this wheel body comprises an axle block, and the one side is extended a ring edge; One wheel is sleeved on the ring edge outside of axle block, and an accommodation space is arranged in the wheel; One wheel shaft, order is passed the center of wheel and axle block, and making wheel can be that the center rotates with the wheel shaft; And one activate element, be arranged in accommodation space, can rotate synchronously with wheel, this actuation element comprises a brake lining, be arranged at the ring edge inboard of relative axle block, this actuation element has sense of motion radially, and is connected in the accommodation space with an elastic element, by the traction of elastic element, the brake lining that makes actuation element not with the interior side contacts of the ring edge of axle block; Wherein, when the rotating speed of wheel reached a preset rotation speed, this actuation element can be because the centrifugal action during the wheel rotation and radial motion makes the brake lining of actuation element contact with the inboard of the ring edge of axle block makes the rotating speed decline of wheel.

Axle block of the present invention more comprises one and supports column base, and in order to connect a pillar stiffener, in order to wheel structure is combined with a car, wherein, this car can be baby walker, perambulator, baby stroller or hand barrow etc.

Brake lining of the present invention is to form with a wear plate fit actuation element, and wherein wear plate can also be one-body molded with actuation element.

In the accommodation space of wheel of the present invention, more comprise one first track and one second track, come from internally extending of accommodation space respectively, wherein the mutual mirror setting of second track and first track has radially sense of motion in order to guide actuation element.

Brake lining of the present invention is the arc surface of an evagination, and and this brake lining contact position inner corresponding with wheel body are a cancave cambered surface that can match with the circular arc convex arc degree of brake lining.

Actuation element of the present invention further comprises a clump weight, and what be arranged at actuation element is bordering on the brake lining place, and its weight can influence the size of the preset rotation speed of actuation element.

Elastic element of the present invention is selected from following group: spring, shell fragment and bullet collude.

The shape of the wheel of stating of the present invention is selected from following group: hemisphere and cylinder.

The shape of the axle block of stating of the present invention is selected from following group: hemisphere and cylinder.

Description of drawings

Fig. 1 is the schematic perspective view of the wheel structure of the embodiment of the invention.

Fig. 2 is the element decomposing schematic representation of the wheel structure of the embodiment of the invention.

Fig. 3 A is the generalized section of the described wheel of the embodiment of the invention.

Fig. 3 B is the described wheel of the embodiment of the invention, the generalized section when actuation element start wherein.

Fig. 4 is the schematic perspective view of the wheel structure of another embodiment of the present invention.

The drawing reference numeral explanation:

1 wheel structure, 10 axle blocks 100 support column base

101 pillar stiffeners, 102 ring edges, 12 wheels

120 accommodation spaces, 121 first tracks, 122 second tracks

14 wheel shafts, 140 fixed plates, 141 stop sections

16 actuation elements, 160 brake linings, 162 wear plates

164 clump weights, 18 elastic elements, 2 wheel structures

20 axle blocks, 22 wheels

The specific embodiment

Embodiments of the invention please refer to Fig. 1, it shown in the figure outer shape of the wheel structure 1 of present embodiment, wheel structure 1 of the present invention for example can be applied to above perambulator, baby walker, baby stroller and hand barrow (above all be not shown among the figure) etc., so that above-mentioned car to be provided the function of advancing can be arranged.

For the main element function of the wheel structure 1 of detailed explanation present embodiment, referring again to Fig. 2, this figure is the element decomposing schematic representation of wheel structure of the present invention; Shown in figure, wheel structure 1 of the present invention includes an axle block 10, a wheel 12, a wheel shaft 14 and an actuating element 16 etc.; Wherein, axle block 10, a wheel 12 and a wheel shaft 14 are formed a wheel body, and the body of axle block 10 wherein can be hollow or solid, but do not show among the figure, and a side of axle block 10 is extended a ring edge 102; 12 on wheel is the outside that is sleeved on the ring edge 102 of axle block 10, and there is an accommodation space 120 its inboard, and when wheel 12 and axle block 10 are coupling fashionablely mutually, accommodation space 120 just can be positioned at the center of ring edge 102; Wheel shaft 14 passes the center-point of wheel 12 and axle block 10, the one end has stop section 141, and the other end is fixing with a fixed plate 140, and making wheel 12 can be that the center rotates with wheel shaft 14, be unlikely to simultaneously to leave axle block 10, this can drive the basic function that garage advances for wheel 12; 16 of actuation elements are to be located in the accommodation space 120 of wheel 12, can rotate synchronously with wheel, wherein actuation element 16 comprises a wear plate 162, be sleeved on a side of actuation element 16, can also be wear plate 162 and actuation element 16 one-body molded making, the outside of its wear plate 162 forms a brake lining 160, the better one, brake lining 160 is the arc surface of an evagination, but not as limit, brake lining 160 is inboard and be provided with respect to the ring edge 102 of axle block 10, the better one, and ring edge 102 inboards of axle block 10 are a cancave cambered surface that can match with the circular arc convex arc degree of brake lining 160; In addition, wheel structure 1 still includes one and supports column base 100, is positioned on the axle block 10, in order to accepting a pillar stiffener 101, and then is connected on the car (not shown).

Make flowing mode and principle for what describe wheel structure of the present invention in detail, please be simultaneously with reference to Fig. 2, Fig. 3 A and Fig. 3 B, actuation element 16 of the present invention is arranged in the accommodation space 120 of wheel 12, one end is connected in a place of the accommodation space 120 of wheel 12 with an elastic element 18, the better one, elastic element 18 can be a spring, but should be as limit, elastic element 18 can also element such as collude for shell fragment or bullet, in the accommodation space 120 and have first track 121 and one second track 122, next from internally extending of accommodation space 120 respectively, wherein second track 122 and the 121 mutual mirror settings of first track, spaces in the middle of both are in order to guiding actuation element 16, make actuation element 16 have radially sense of motion; When wheel 12 rotates with normal speed, please refer to Fig. 3 A, actuation element 16 is because elastic element 18 has the relation of elastic force, actuation element 16 is maintained a side, this moment actuation element 16 brake lining 160 can't with the interior side contacts of the ring edge 102 of axle block 10, this moment, wheel 12 can normally be rotated motion, drove the car motion of can at random advancing; But when the rotating speed of wheel 12 reaches a preset rotation speed, please refer to Fig. 3 B, the centnifugal force that actuation element 16 is produced in the time of can rotating because of wheel is greater than the elastic force of elastic element 18, and the motion that actuation element 16 is produced radially, its sense of motion is shown in the hollow arrow among Fig. 3 B, make the inboard of ring edge 102 of the brake lining 160 trolley wheel axle beds 10 of actuation element 16, at this moment, owing to the interior side contacts of brake lining 160 with the ring edge 102 of axle block 10 produces friction, the rotating speed of wheel 12 is descended, reach the effect of brake, car can be avoided causing danger with regard to not causing speed out of control because wheel 12 rotating speeds are too fast at this moment.

Also comprise a clump weight 164 in the actuation element 16 of the present invention, be arranged in actuation element 16 near brake lining 160 end parts, the better one, what clump weight 164 can be arranged at actuation element 16 is bordering on brake lining 160 places; Clump weight 164 has weight, so when wheel 12 is rotated motion, the size of its weight can directly influence the centnifugal force size that actuation element 16 is produced, the balance of the elastic force that this centnifugal force and elastic element 18 are produced is the preset rotation speed of decision wheel 12, basically, the weight of clump weight 164 is bigger, the preset rotation speed of its wheel l2 is just little, that is to say, the weight of clump weight 164 heals when big, wheel 12 reaches preset rotation speed more easily and makes wheel 12 produce the effect of brake, and the balance of the elastic force that centnifugal force and elastic element 18 are produced can be decided according to the designer, in order to the size of preset rotation speed of decision wheel 12, determined the scope of the active safety of wheel 12 indirectly.

Wheel structure of the present invention 1 is owing to have above-mentioned element, and then the rotating speed with limited wheel substructure can promote for example active safety of perambulator, baby walker, baby stroller and hand barrow etc. really to avoid too fast effect; What is more, actuation element 16 in the wheel structure 1 of the present invention, owing to be to be connected in the wheel 12 by elastic element 18, and elastic element 18 can continue to provide an elastic force, make actuation element 16 radial motions return back to original position, this make when wheel structure 1 when rotating speed is too fast, automatically after producing braking action, after descending, rotating speed can automatically return to original state, can just not understand involution, so wheel structure of the present invention 1 can also have the effect of real-time recoil state because of the action that needs further release.

The wheel structure of another embodiment of the present invention sees also shown in Figure 4, the element of the wheel structure 2 shown in the figure with and the start principle all identical with the above embodiments of the present invention, but the body shape of the wheel 12 in the foregoing description is a hemisphere, but should be as limit, the better one, the body shape of the axle block 10 of present embodiment is a cylinder, still can have the described effect as above-mentioned embodiment; In addition, the body shape of the axle block 20 shown in this figure is a hemisphere, but equally not as limit, the body shape of axle block 20 can also as long as meet the described component structure of the foregoing description, all can be implemented according to this for for example cylinder or other shape etc.

The above only is preferred embodiment of the present invention, and the foregoing description only is used for illustrating but not in order to limit claim of the present invention, category of the present invention is defined by claims.All equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.

Claims

1. wheel structure, it comprises:

One wheel body; And

One activates element, is located in this wheel body, and this actuation element comprises a brake lining, and this actuation element draws by an elastic element, the brake lining that makes this actuation element not with the interior side contacts of this wheel body;

When the rotating speed of this wheel body reached a preset rotation speed, this actuation element can contact with this wheel body because of centrifugal action makes the brake lining of this actuation element, and the rotating speed of this wheel is descended.

2. wheel structure as claimed in claim 1 is characterized in that, described wheel body comprises:

One axle block, a side of this axle block is extended a ring edge;

One wheel is sleeved on outside the ring edge of this axle block, and an accommodation space is arranged in this wheel; And

One wheel shaft, this wheel shaft passes the center of this wheel and this axle block, and making this wheel can be that the center rotates with this wheel shaft;

Wherein, this actuation element has radially sense of motion with respect to wheel shaft.

3. wheel structure as claimed in claim 2 is characterized in that, described axle block more comprises one and supports column base, in order to connect a pillar stiffener, this pillar stiffener is in order to combine this wheel structure with a car, wherein, this car can be baby walker, perambulator, baby stroller or hand barrow etc.

4. wheel structure as claimed in claim 1 is characterized in that, described brake lining is with wear plate cover should actuation element and forming.

5. wheel structure as claimed in claim 1 is characterized in that, described wheel body inside more comprises one first track, has radially sense of motion in order to guide this actuation element.

6. wheel structure as claimed in claim 5 is characterized in that, described wheel body inside more comprises one second track, and this second track and the mutual mirror setting of this first track have radially sense of motion in order to guide this actuation element.

7. wheel structure as claimed in claim 1 is characterized in that, described brake lining is the arc surface of an evagination, and this wheel body is inner corresponding and this brake lining contact position, is a cancave cambered surface that can match with the circular arc convex arc degree of brake lining.

8. wheel structure as claimed in claim 1 is characterized in that described actuation element further comprises a clump weight, and the weight of this clump weight can influence the size of this preset rotation speed of this actuation element.

9. wheel structure as claimed in claim 8 is characterized in that, what described clump weight was arranged at this actuation element is bordering on the brake lining place.

10. wheel structure as claimed in claim 1 is characterized in that, described elastic element is selected from following group: spring, shell fragment and bullet collude.