caster wheel

Abstract

The invention relates to a caster, comprising a housing, a brake, a first pedal and a second pedal. The housing is provided with a wheel body, which rotates around an axis. The brake is swingably provided on the housing. The first pedal is provided on the housing and swingable between a first position and a second position, the first pedal comprising a first treading end and an abutting end. The second pedal comprises a second treading end and a sliding end, the second pedal being pivotally connected to the abutting end, the sliding end being slidably provided against the housing.

Description

TECHNICAL FIELD

[0001] The present invention relates to a caster. BACKGROUND

[0002] Generally, a caster with brake function is basically composed of a housing and a wheel body pivoted to the housing, a brake unit is arranged between the housing and the wheel body, and the brake unit is a brake plate which can be pushed to abut against the wheel body. A pedal is additionally arranged on the housing, when the pedal is swung downward, the pedal can push the brake plate to abut against the wheel body to brake, when the pedal is swung upward, the brake plate is not pushed to abut against the wheel body, and the wheel body can rotate.

[0003] However, when the pedal is swung upward, for the sake of convenience, the user will use the instep to hook the pedal from the bottom to the top, and thus the use has the following disadvantages: first, the pedal is easy to scratch the smooth shoe surface, and second, the pedal is easy to scratch the toes or instep of the female user wearing shoes with exposed parts such as sandals or indoor shoes, and there is a problem to be improved.

[0004] Therefore, it is necessary to provide a novel and advanced caster to solve the above problems. SUMMARY

[0005] The main purpose of the present invention is to provide a caster which uses the downward stepping action to brake or release the brake, so as to avoid the problem of scratching the shoe surface or skin.

[0006] To achieve the above purpose, the present invention provides a caster, which comprises a housing, a brake member, a first pedal and a second pedal. The housing is provided with a wheel body which rotates around an axis. The brake member is swingably arranged on the housing. The first pedal is arranged on the housing and can swing between a first position and a second position, and the first pedal comprises a first stepping end and an abutting end. The second pedal comprises a second stepping end and a sliding end, and the second pedal is pivoted to the abutting end, and the sliding end is slidably arranged against the housing. When the first pedal is located at the first position, the first stepping end and the second stepping end are overlapped, the first stepping end is away from the wheel body, and the brake member is not in contact with the wheel body; when the first pedal is swung toward the second position, the first stepping end is swung toward the wheel body, the first pedal abuts against the brake member to make the brake member swing to abut against the wheel body, and the abutting end drives the second pedal to swing to make the first stepping end and the second stepping end swing away from each other.

[0007] Preferably, the brake member is pivoted to the housing by a first pivot, and the first pivot extends in parallel with the axis.

[0008] Preferably, the first pedal is pivotally connected to the housing by a second pivot, the second pivot being located between the first pedal end and the abutting end.

[0009] Preferably, the abutting end is pivotally connected to the second pedal at a third pivot, the second pedal having two spaced apart engaging portions protruding from one end of the second pedal, the third pivot being inserted into the two engaging portions.

[0010] Preferably, the housing comprises two side walls and a top wall, the top wall being connected between the two side walls, the wheel body being pivotally connected between the two side walls, the brake member being located between the wheel body and the top wall.

[0011] Preferably, the top wall has a recess, the recess having two limiting portions protruding from opposite sides of the recess, the sliding end having a pin member, the sliding end being received in the recess, the top wall further having a blocking plate spaced apart from the two limiting portions, the pin member being located across the recess and being slidable between the two limiting portions and the blocking plate.

[0012] Preferably, the brake member comprises a pivot portion, a connecting portion and a braking portion, the connecting portion being located between the pivot portion and the braking portion, the connecting portion having two brake pads at opposite ends of the connecting portion along the axial direction, the two brake pads being inclined towards the wheel body with respect to the connecting portion, the pivot portion being pivotally connected to the two side walls by a first pivot.

[0013] Preferably, the connecting portion has a spring protruding from a junction between the pivot portion and the connecting portion, the spring being springingly abutted against the top wall.

[0014] Preferably, the housing further comprises a shaft, the shaft being rotatably inserted into the housing, the shaft having a gear plate rotatably connected to one end of the shaft, the brake member having a clamping portion at an end opposite to the braking portion, the clamping portion not interfering with the gear plate when the first pedal is located at the first position, the clamping portion interfering with the gear plate when the first pedal is swung to the second position.

[0015] Preferably, the brake member is pivotally connected to the housing by a first pivot shaft extending in parallel with the axial direction, the housing comprises two side walls and a top wall connected between the two side walls, the wheel body is pivotally connected between the two side walls, and the brake member is located between the wheel body and the top wall; the top wall is concavely provided with a groove, the two sides of the groove are respectively convexly provided with limiting stop portions, the sliding end is provided with a pin member, the sliding end is accommodated in the groove, the top wall is further provided with a baffle spaced from the two limiting stop portions, the pin member crosses the groove and is slidably arranged between the two limiting stop portions and the baffle; the brake member comprises a pivotal connecting portion, a connecting portion and a braking portion, the connecting portion is located between the pivotal connecting portion and the braking portion, the two opposite ends of the connecting portion along the axial direction are provided with two brake pads, the two brake pads are inclined towards the wheel body relative to the connecting portion, and the pivotal connecting portion is pivotally connected to the two side walls by a first pivot shaft; the connecting portion is convexly provided with a spring plate at the connecting position of the pivotal connecting portion, and the spring plate is springingly abutted against the top wall; further comprising a shaft rod rotatably inserted into the housing, one end of the shaft rod inserted into the housing is provided with a gear disc synchronously driven, one end of the brake member away from the braking portion is provided with a clamping portion, when the first pedal is located at the first position, the clamping portion does not interfere with the gear disc, when the first pedal is swung to the second position, the clamping portion interferes with the gear disc; the two side walls are respectively provided with a recess portion on the side away from each other, and each recess portion is detachably covered with a cover member; the two side walls are respectively convexly provided with an ear plate, and the second pivot shaft is pivotally connected to the ear plate.

[0016] The present application has the following advantages:

[0017] The caster provided by the present application can be used for braking and unbraking by the upward and downward treading action, so as to avoid the problem of scratching the vamp or skin. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of a preferred embodiment of the present application.

[0019] Figure 2 An exploded view of a preferred embodiment of the present application.

[0020] Figure 3 A perspective view of a preferred embodiment of the present application. Figure 2 An enlarged view of a part.

[0021] Figures 4 to 5 A partial operation sectional view of a preferred embodiment of the present application.

[0022] Figures 6 to 7 A partial operation perspective view of a preferred embodiment of the present application.

[0023] Figure 8 A top view of a preferred embodiment of the present application.

[0024] REFERENCE NUMERALS

[0025] 1: housing; 11: wheel body; 12: axial direction; 14: side wall; 141: ear; 15: top wall; 16: recess; 17: limiting stop; 18: recessed part; 181: cover; 19: baffle; 2: brake piece; 21: pivot joint; 22: connecting part; 23: brake part; 24: brake pad; 25: elastic piece; 26: clamping part; 27: first pivot; 3: first pedal; 31: first treading end; 32: abutting end; 33: second pivot; 4: second pedal; 41: second treading end; 42: sliding end; 43: third pivot; 44: joint part; 45: pin piece; 5: shaft; 51: toothed disc. DETAILED DESCRIPTION

[0026] The following will only illustrate possible implementation forms of the present application by way of examples, but are not intended to limit the scope of protection of the present application.

[0027] Please refer to Figures 1 to 8 which shows a preferred embodiment of the present application, the caster includes a housing 1, a brake piece 2, a first pedal 3 and a second pedal 4.

[0028] The housing 1 is provided with a wheel body 11 which rotates around an axial direction 12.

[0029] The brake piece 2 is swingably arranged in the housing 1.

[0030] The first pedal 3 is arranged in the housing 1 and can swing between a first position and a second position, the first pedal 3 includes a first treading end 31 and an abutting end 32.

[0031] The second pedal 4 includes a second treading end 41 and a sliding end 42, the second pedal 4 is pivotally connected with the abutting end 32, and the sliding end 42 is arranged to abut against the housing 1.

[0032] When the first pedal 3 is located at the first position, the first treading end 31 and the second treading end 41 are overlapped (as shown in Figure 4 and 6 ), the first treading end 31 is away from the wheel body 11, the brake piece 2 is not in contact with the wheel body 11, and the wheel body 11 can rotate freely; when the first pedal 3 swings towards the second position, the first treading end 31 swings towards the wheel body 11, the first pedal 3 abuts against the brake piece 2 to make the brake piece 2 swing and abut against the wheel body 11, so that the wheel body 11 cannot rotate freely to achieve a braking state, and the abutting end 32 drives the second pedal 4 to swing so that the first treading end 31 and the second treading end 41 are away from each other (as shown in Figure 5 and 7 ).

[0033] Therefore, when the first pedal 3 is to be reset from the second position to the first position (i.e. the brake is released), only the second pedal end 41 is pressed towards the first pedal end 31, the second pedal 4 presses against the abutting end 32, and the first pedal 3 is returned to the first position, thus being convenient and simple to operate. The upper-to-lower pressing action is used for braking or releasing the brake, so as to avoid scratching the shoe or the skin. In addition, since the sliding end 42 is slidably arranged against the housing 1, the second pedal 4 can slide and swing relative to the housing 1, so that the first pedal end 31 and the second pedal end 41 swing away from each other with a larger amplitude, and the second pedal 4 pushes the first pedal 3 to return to the first position with less effort.

[0034] Specifically, the brake member is pivotally arranged in the housing 1 by a first pivot 27, and the first pivot 27 extends in parallel with the axial direction 12.

[0035] In the embodiment, the first pedal 3 is pivotally connected to the housing 1 by a second pivot 33, and the second pivot 33 is located between the first pedal end 31 and the abutting end 32, so that the first pedal end 31 and the abutting end 32 swing in the manner of a seesaw. Specifically, the abutting end 32 is pivotally connected to the second pedal 4 by a third pivot 43, and the second pedal 4 has two spaced-apart connecting portions 44 at one end thereof facing the first pedal 3, and the third pivot 43 is inserted into the two connecting portions 44, so that the abutting end 32 is pivotally connected to the second pedal 4.

[0036] The housing 1 includes two side walls 14 and a top wall 15 connected between the two side walls 14, and the wheel body 11 is pivotally connected between the two side walls 14, and the brake member 2 is located between the wheel body 11 and the top wall 15. Preferably, the top wall 15 is recessed with a recess 16, and the recess 16 has two limiting stop portions 17 protruding from both sides thereof, and the sliding end 42 is provided with a pin member 45, and the sliding end 42 is accommodated in the recess 16, and the top wall 15 is further provided with a stop plate 19 spaced apart from the two limiting stop portions 17, and the pin member 45 crosses the recess 16 and is slidably arranged between the two limiting stop portions 17 and the stop plate 19, so as to limit the sliding range of the sliding end 42. The two side walls 14 are respectively provided with an ear 141, and the second pivot 33 is pivotally connected to the two ears 141, so that the first pedal 3 is more protruding, thereby facilitating the pressing.

[0037] Further, the brake member 2 comprises a pivot portion 21, a connecting portion 22 and a braking portion 23, the connecting portion 22 is located between the pivot portion 21 and the braking portion 23, the connecting portion 22 is provided with two brake pads 24 at opposite ends along the axial direction 12, the two brake pads 24 are inclined towards the wheel body 11 relative to the connecting portion 22, the pivot portion 21 is pivotally provided on the two side walls 14 through the first pivot shaft 27, the two brake pads 24 can abut against the two tire shoulders of the wheel body 11, so that a higher braking force can be achieved, and in addition, the tire crown (i.e. the arc top of the tire) of the wheel body 11 can be avoided to be abraded, so that the service life of the wheel body 11 can be reduced, and the durability of the wheel body 11 can be improved. Preferably, a spring piece 25 is protrudingly provided at the connection between the pivot portion 21 and the connecting portion 22, the spring piece 25 is elastically abutted against the top wall 15, so that the connecting portion 22 can be always swung away from the wheel body 11.

[0038] It is worth mentioning that the caster further comprises a shaft rod 5, the shaft rod 5 is rotatably inserted into the shell 1, the shaft rod 5 is provided with a same-motion gear disc 51 at an end extending into the shell 1, the brake member 2 is provided with a clamping portion 26 at an end away from the braking portion 23, when the first pedal 3 is located at the first position, the clamping portion 26 does not interfere with the gear disc 51, when the first pedal 3 is swung to the second position, the clamping portion 26 interferes with the gear disc 51, so as to prevent the shaft rod 5 from rotating with the shell 1, and the frame can be avoided to shake.

[0039] In addition, the two side walls 14 are respectively provided with a recessed portion 18 at a side away from each other, each recessed portion 18 is detachably covered with a cover member 181, the cover member 181 can be provided with a marking portion to display a trademark or a number, so as to achieve an advertising effect or to control the number of casters.

Claims

1. A caster wheel characterized by, The utility model relates to a brake device, comprising: a housing, provided with a wheel body, which rotates around an axis; a brake piece, swingably arranged in the housing, comprising a pivot joint, a connecting part and a braking part, the connecting part being between the pivot joint and the braking part, the connecting part being provided with two brake pads at opposite ends along the axis, the two brake pads being capable of abutting against two shoulders of the wheel body; a first pedal, pivotally connected to the housing by a second pivot, comprising a first treading end and an abutting end, the second pivot being between the first treading end and the abutting end, the first pedal being capable of swinging between a first position and a second position; a second pedal, comprising a second treading end and a sliding end, the second pedal being pivotally connected to the abutting end, the sliding end being slidably arranged against the housing; wherein, when the first pedal is in the first position, the first treading end and the second treading end are overlapped, the first treading end is away from the wheel body, and the brake piece is not in contact with the wheel body; when the first pedal swings towards the second position, the first treading end swings towards the wheel body, the first pedal abuts against the brake piece to make the brake piece swing and abut against the wheel body, and the abutting end drives the second pedal to swing so that the first treading end and the second treading end are away from each other.

2. The caster wheel of claim 1, wherein, The brake piece is pivotally arranged in the housing by a first pivot, and the first pivot extends in parallel to the axis.

3. The caster wheel of claim 1, wherein, The abutting end is pivotally connected to the second pedal by a third pivot at a position between the second treading end and the sliding end, and one end of the second pedal towards the first pedal is provided with two spaced apart connecting parts, and the third pivot is inserted into the two connecting parts.

4. The caster wheel of claim 1, wherein, The housing comprises two side walls and a top wall, the top wall being connected between the two side walls, the wheel body being pivotally connected between the two side walls, and the brake piece being between the wheel body and the top wall.

5. The caster wheel of claim 4, wherein, The top wall is recessed with a groove, two limiting stop portions being respectively protruded on both sides of the groove, a pin member being arranged through the sliding end, the sliding end being accommodated in the groove, and the top wall being further provided with a stop plate spaced apart from the two limiting stop portions, the pin member crossing the groove and being slidably arranged between the two limiting stop portions and the stop plate.

6. The caster wheel of claim 4, wherein, The two brake pads are inclined towards the wheel body relative to the connecting part, and the pivot joint is pivotally arranged in the two side walls by a first pivot.

7. The caster wheel of claim 6, wherein, A spring sheet is protruded at the joint between the pivot joint and the connecting part, and the spring sheet is elastically abutted against the top wall.

8. The caster wheel of claim 1, wherein, Further comprising a shaft, which is rotatably arranged in the housing, one end of the shaft extending into the housing being provided with a gear disc which moves synchronously, and one end of the brake piece away from the braking part being provided with a clamping portion, when the first pedal is in the first position, the clamping portion does not interfere with the gear disc, and when the first pedal swings to the second position, the clamping portion interferes with the gear disc.

9. The caster wheel of claim 3, wherein, The brake member is pivoted to the shell through a first pivot, the first pivot extends parallel to the axial direction; the shell comprises two side walls and a top wall, the top wall is connected between the two side walls, the wheel body is pivoted between the two side walls, and the brake member is located between the wheel body and the top wall; the top wall is concavely provided with a groove, two limiting stop portions are respectively protruded on both sides of the groove, the sliding end is provided with a pin member, the sliding end is accommodated in the groove, the top wall is further provided with a baffle which is spaced from the two limiting stop portions, the pin member crosses the groove and is slid between the two limiting stop portions and the baffle; the two brake pads are inclined towards the wheel body relative to the connecting portion, the pivoting portion is pivoted to the two side walls through a first pivot, the connecting portion is provided with a spring plate at the connection position, and the spring plate is elastically abutted on the top wall; further comprising a shaft rod, the shaft rod is rotatably inserted into the shell, one end of the shaft rod inserted into the shell is provided with a gear disc which is synchronously driven, one end of the brake member away from the brake portion is provided with a clamping portion, when the first pedal is located at the first position, the clamping portion does not interfere with the gear disc, when the first pedal is swung to the second position, the clamping portion interferes with the gear disc; the side of the two side walls away from each other is respectively provided with a recess portion, and each recess portion is detachably covered with a cover member; the two side walls are respectively provided with an ear plate, and the second pivot is pivoted to the ear plate.

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