TW201906757A - Locking structure capable of automatically locking wheel especially having a brake member and an anti-slippery wheel located at the wheels and mutually abutting to each other - Google Patents

Abstract

The invention relates to a locking structure capable of automatically locking wheels, which is applied to wheels of a trolley. The locking structure comprises an outer casing, a seat body, a first elastic component, a brake member and a stop pulley, wherein, the outer casing is assembled to the bottom of the trolley and the seat body is assembled therein, and the axle of the wheel passes through the seat body to drive the seat body to move back and forth in the outer casing. The first elastic component is located inside the outer casing, and pushing the seat body forwardly, and the brake member is disposed on the outer side of the outer casing, the stop pulley is fixed to the axle, and when the trolley is not pushed by the force, the first elastic component pushes the seat body to move forwardly toward the front of the outer casing, so that the stop pulley abuts against the brake member to make the axle and the wheels unable to rotate, thereby achieving the effect of automatically locking the wheels.

Description

 Locking structure that automatically locks the wheel  

The invention relates to a locking structure, in particular to a brake device and a stopping pulley on a wheel, and when the user does not push the trolley, the stopping pulley and the braking component can automatically abut against each other, thereby making the wheel unable to rotate. To automatically lock the locking structure of the wheel.

According to the rapid development of the economy and the advancement of technology, people will no longer simply compare the price when purchasing goods, but will consider it as consumption according to the operability, convenience, durability and even safety. Taking "baby strollers" as an example, in the past, caregivers such as newborn parents and full-time babysitters paid more attention to the comfort, push sensitivity or portability of the car when purchasing a stroller. However, in recent years, Many caregivers have been obsessed with the accidents caused by the slipping of the stroller. They have repeatedly jumped into the news page and made the safety mechanism of the stroller a priority for manufacturers.

In many accidents, the stroller has been parked still by the caregiver, because the caretaker leaves the handlebar of the stroller with both hands. At this time, the stroller is affected by external force (such as pedestrian collision) or because the road is tilted. Sliding, and then collisions, overturns and so on. Although there are many improved strollers on the market that can improve the stability of the stroller when it is parked, it does not effectively solve the aforementioned accidents.

Referring to FIG. 1 , it is a base structure of a baby stroller, including a wheel axle 10 and two wheels 11 . The bottom of the axle 10 is provided with a brake rod 102 , and the wheel hub 111 of the wheel 11 is provided with a plurality of axles 111 . The brake hole 112, when the caregiver wants to park the baby carriage, can step on the brake switch 101 on the base with the foot, and extend the brake lever 102 toward the wheel 11 to be inserted into the brake hole 112 to ensure that the brake hole 112 is inserted into the brake hole 112. The wheel 11 can be completely stationary, and when the caregiver releases the brake switch 101, the brake lever 102 will be driven by a return spring 103 and pulled back to the original position, and the baby carriage structure can effectively ensure that the wheel 11 is at a standstill. And it is operated by pedaling, which makes the caregiver more comfortable in use.

However, the applicant found that the design of all the strollers currently on the market is "allowing the caregiver to operate a switch to "lock" the wheel", but all kinds of accidents are caused by the caregivers. (For example, I think that it is only for a short time to open my hands and think that the road surface is stable). Therefore, even if the operator designs various well-functioning wheel locking devices, if the caregiver fails to operate due to negligence, there may still be accidents. How to design a more intuitive and improved structure, so that the caregiver can realize a more perfect safety mechanism without having to actively operate and fix the wheel, which is an important subject to be solved by the present invention.

In view of the various strollers on the market, it is impossible to avoid the problem of accidental sliding caused by the external force or the inclination of the road after the stroller is parked. The inventor has relied on years of research and development experience, after many studies, tests and improvements. Finally, a locking structure capable of automatically locking the wheel of the present invention is finally designed, and the utility model can provide a locking structure of the cart which is easy to implement, safer and convenient to operate.

One object of the present invention is a locking structure capable of automatically locking a wheel, which is applied to a wheel of a cart, the locking structure comprising an outer casing, a body, a first elastic element, at least one brake component and at least one a stop pulley, wherein the outer casing is assembled to a position of a support rod adjacent to the bottom portion, at least one side of which is provided with an opening, the seat body is located in the outer casing body, and one of the wheel axles can pass through each of the openings And assembling to the base body, the first elastic element is fastened in the outer casing body, and the two ends thereof respectively abut against the rear side of the seat body and the outer casing body, and the brake component is assembled to one side of the outer casing body, a rear end thereof is extendable toward the opening, the stopping pulley is fixed to the axle, and a side of each of the openings is provided corresponding to the outer casing, and the trolley is not urged The first elastic member applies a force to the seat body, so that the seat body can be displaced toward the front of the outer casing body, and the stopping pulley and the brake member abut against each other, so that the stopping pulley cannot rotate, thereby causing the axle to The wheel can't rotate, like Therefore, the user can automatically lock the wheel by simply releasing the hand and no longer applying force to the cart, thereby greatly improving the safety and convenience in use.

For your convenience, the review committee can make a further understanding and understanding of the purpose, technical features and effects of the present invention. The embodiments are combined with the drawings, and the details are as follows:

 [study]  

10‧‧‧Axle

101‧‧‧ brake switch

102‧‧‧煞车杆

103‧‧‧Return spring

11‧‧‧ Wheels

111‧‧·wheels

112‧‧‧煞Car hole

 〔this invention〕  

21‧‧‧Outer casing

210‧‧‧Opening

211‧‧‧ channel

23‧‧‧

231‧‧ ‧ slip section

233‧‧‧through holes

24‧‧‧First elastic element

25‧‧‧煞车件

26‧‧‧Second elastic element

27‧‧‧stop pulley

L1‧‧‧ support rod

K1‧‧·Axle

K‧‧‧ wheels

N‧‧‧ spacing

1 is a schematic view of a base structure of a conventional baby carriage; FIG. 2 is a front view of the locking structure of the present invention; FIG. 3 is a side view of the locking structure of the present invention; and FIG. 4 is a perspective view of the sliding member; Fig. 5A is a schematic view showing a state of the locking structure of the present invention; and Fig. 5B is a view showing another state of the locking structure of the present invention.

The invention relates to a locking structure capable of automatically locking a wheel, which is applied to a wheel of a cart (such as a baby carriage). In particular, the main purpose of the present invention is to provide a safer and more convenient way of braking. Therefore, the shape or type of the cart is not limited. As long as the cart is manually pushed and the bottom is provided with a wheel, the locking structure of the present invention can be assembled to the wheel, thereby achieving subsequent automatic locking of the wheel. Efficacy, therefore, in order to highlight the structural focus of the case, in the subsequent drawings, only the bottom of the cart is drawn, and the left side of the third figure is used as the front position of the component, and the right side of the third figure is used as the component. The rear position, but having ordinary knowledge in the art, can be assembled into the corresponding cart without any disambiguation after reviewing the contents of the present invention.

Referring to FIGS. 2 to 4, in an embodiment, the locking structure includes an outer casing 21, a body 23, a first elastic member 24, at least one brake member 25, and at least one stop pulley 27, wherein The outer casing 21 can be assembled to a position adjacent to the bottom of the support rod L1, and an opening 210 is formed in the opposite left and right sides, and the two openings 210 communicate with the receiving space in the outer casing 21, When the user pushes the cart, the support rod L1 moves synchronously with the cart, and the accompanying movement causes the outer casing 21 to move synchronously with the support rod L1.

In addition, as shown in FIGS. 2~4, the seat body 23 is located in the outer casing 21, and a sliding portion 231 is respectively protruded from the opposite sides of the outer casing, and each of the sliding portions 231 can be respectively disposed. And extending into the corresponding opening 210, and the outer diameter thereof is smaller than the inner diameter of the opening 210, so that the sliding portion 231 can be displaced back and forth in the opening 210, and the first elastic member 24 is positioned. In the outer casing 21, in the embodiment, the rear side of the outer casing 21 is adjacent to the bottom portion, and a passage 211 is recessed inwardly. The first elastic member 24 can be located in the passage 211, and the front end thereof can abut To the rear side of the seat body 23, the rear end thereof abuts against the outer casing 21, and the first elastic member 24 applies a force to the seat body 23, and the force forces the seat body 23 toward the outer casing. The front of the body 21 is displaced. Furthermore, an axle K1 can pass through the two sliding portions 231 to be assembled to the seat body 23, and a wheel K is respectively fixed at both ends of the axle K1, so that the outer casing 21 can be located on the two wheels K. However, in other embodiments of the present invention, the operator can provide only a single wheel K in the foregoing structure according to the product requirements. In this case, the outer casing 21 can also be provided with only a single opening 210. The seat body 23 can also be provided with only a single slip portion 231, or the operator can also be provided with no slip portion 231 as long as the wheel axle K1 can pass through the opening 210 and be assembled to the seat body 23, and the outer diameter thereof. It is smaller than the inner diameter of the opening 210, that is, it can drive the seat body 23 to be displaced back and forth in the outer casing 21.

In this embodiment, as shown in FIGS. 2~4, the brake members 25 are respectively disposed on opposite sides of the outer casing 21, wherein the rear end of the brake member 25 can face the opening 210. Extending and capable of being a material having a high coefficient of friction, the brake member 25 can be a single component or a combination of a plurality of components, and can be connected by various means such as card insertion, locking, adhesion, etc. It is fixed to the outer side of the outer casing 21. Further, the axle K1 is adjacent to the two ends, and each of the stopping pulleys 27 is fixed, and the stopping pulley 27 is located between the outer casing 21 and the wheel K (as shown in FIG. 2), when the wheel K rotates. It will drive the axle K1 to rotate, so that the stop pulley 27 rotates synchronously with the axle K1, in other words, when the stop pulley 27 stops rotating, it can also stop the rotation of the wheel K by stopping the axle K1. However, in other embodiments of the present invention, if only a single wheel K is provided, the locking structure can also be provided with only a single brake member 25 and a single stop pulley 27.

Only the operation principle of the locking structure of the present invention will be described. In order to avoid the complexity of the drawing, in the 5A and 5B drawings, the corresponding stopping pulley 27 is drawn only by the virtual circle, and the wheel K on the same side is omitted. . In this embodiment, when the user does not push the cart, the first elastic member 24 applies a force to the seat body 23, so that the seat body 23 is displaced toward the front of the outer casing 21, so that the stop pulley 27 Abutting against the brake member 25 (as shown in FIG. 5A), at this time, the stop pulley 27 is not affected by the frictional force of the brake member 25, and thus the axle K1 and the wheel K cannot be rotated. The wheel K is automatically locked so that the cart remains stationary without slipping.

Thereafter, when the user pushes the cart and moves the cart forward, the support rod L1 will drive the outer casing 21 to move forward, and at this time, the wheel K is affected by the friction with the ground. If the axle K1 is placed on the sliding portion 231, the sliding portion 231 will be opposite to the opening. The rear portion of the 210 is displaced, and the brake member 25 is disengaged from the stop pulley 27 (as shown in FIG. 5B) to form a spacing N between the brake member 25 and the stop pulley 27, so that the stop pulley 27 can be freely rotated. The state, in turn, enables the axle K1 and the wheel K to resume normal rotation to unlock the wheel K.

In summary, with the locking structure of the present invention, when the user does not need to push the cart, the first elastic member 24 automatically pushes the seat body as long as it no longer applies force to the cart. 23, in order to enable the seat body 23 to drive the stop pulley 27 against the brake member 25 (as shown in FIG. 5A), automatically forming a situation in which the wheel K is locked, so that the cart can be kept in a stationary state, that is, The user can automatically complete the braking effect without any additional braking operation, avoiding the danger caused by the accidental sliding of the trolley, and greatly improving the safety and convenience in use.

In this embodiment, as shown in FIG. 3, a second elastic member 26 is further disposed in the seat body 23, and the sliding portion 231 is provided with a permanent through hole 233 along the axial direction thereof, which is outside the wheel shaft K1. The diameter of the second elastic member 26 is abutted against the seat body 23, and the second elastic member 26 is The other end abuts against the side edge of the axle K1, and the second elastic member 26 applies a downward displacement force to the axle K1, such that the second elastic member moves while the cart is walking on the bumpy road segment. 26 can provide a shock absorber effect, in addition, when the cart carries a heavier item, the support rod L1 will drive the outer casing 21 to move downward, and at this time, the position of the axle K1 will be Adjacent to the upper portion of the sliding portion 231 (that is, a position that is located upward in the through hole 233), in this case, both the brake member 25 and the stopping pulley 27 can be brought closer together, thereby effectively improving the braking effect. In particular, in FIG. 3, the axle K1 is first assembled to the other components and then assembled into the seat body 23. Therefore, the second elastic component 26 is indirectly abutted against the axle K1. However, whether the second elastic member 26 directly or indirectly abuts against the axle K1 is within the scope of the present invention.

The above is only the preferred embodiment of the present invention, but the scope of the claims of the present invention is not limited thereto, and according to those skilled in the art, according to the technical content disclosed in the present invention, Equivalent changes that are easily considered are within the scope of protection of the invention.

Claims (5)

 A locking structure capable of automatically locking a wheel is applied to a wheel of a cart, the locking structure comprising: an outer casing assembled to a position of a support rod adjacent to the bottom, at least one side of which is provided with an opening; Causing in the outer casing, one of the wheel axles can pass through each of the openings and is assembled to the seat body, the outer diameter of the axle is smaller than the inner diameter of each of the openings; a first elastic element, Tied in the outer casing, the front end of the casing can abut against the rear side of the seat body, and the rear end thereof abuts against the outer casing; at least one brake component is assembled to the side of the outer casing provided with each of the openings a rear end thereof is extendable toward the corresponding opening; and at least one stop pulley is fixed to the axle, and corresponding to the outer casing is provided with one side of each of the openings, and the carriage is not When the force is pushed, the first elastic member applies a force to the seat body, so that the seat body can be displaced toward the front of the outer casing body, and each of the stopping pulleys abuts against each of the brake members, so that each The stop pulley cannot be rotated, so that the axle and the wheel are not Rotation.    The locking structure of claim 1, wherein the seat body has a sliding portion corresponding to each of the openings, and each of the sliding portions can extend into the corresponding opening, and Displacement in each of the openings, the axle can pass through each of the sliding portions to drive the displacement of the seat.    The locking structure according to claim 2, wherein in a state in which the cart is biased and pushed forward, the outer casing is displaced forward with the support rod, and the friction of the wheel forces the axle to be temporarily Retaining the position such that each of the sliding portions of the seat body is displaceable relative to the inner and rear of the opening, so that each of the braking members is disengaged from each of the stopping pulleys, so that the stopping pulleys can resume rotation, thereby The axle and the wheel can also rotate normally.    The locking structure according to claim 3, further comprising a second elastic member, wherein the sliding portion is provided with a continuous perforation along an axial direction thereof, and an outer diameter of the axle is smaller than an inner diameter of the through hole, so that the axle can be Up and down displacement in the through hole, wherein the second elastic component is assembled in the seat body, one end of which abuts against the seat body, and the other end of which abuts against the side edge of the axle and applies downward displacement to the axle Force.    The locking structure of claim 4, wherein the rear end of the brake member is a material having a high coefficient of friction.