CN218750959U

CN218750959U - Children's vehicle damping wheel and children's vehicle

Info

Publication number: CN218750959U
Application number: CN202222133812.6U
Authority: CN
Inventors: 马聪泉; 郝凯凯
Original assignee: Butong Internet Of Things Technology Shanghai Co ltd; Ch Baby Co ltd
Current assignee: Butong Internet Of Things Technology Shanghai Co ltd; Ch Baby Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-03-28
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a damping wheel of a baby carriage and the baby carriage, wherein the wheel comprises a wheel, a lower wheel seat, an upper wheel seat and an elastic part, and the wheel is provided with a through wheel shaft; the lower wheel seat is provided with supporting parts which are positioned at the two sides of the wheel and connected with the two ends of the wheel shaft; the upper wheel seat is rotationally connected with the lower wheel seat, and a unidirectional rotation limiting mechanism is arranged between the upper wheel seat and the lower wheel seat; the elastic piece is arranged between the lower wheel seat and the upper wheel seat and used for absorbing relative displacement between the lower wheel seat and the upper wheel seat. When the road section with the bulge is passed through fast, the lower wheel seat can reduce or eliminate the displacement amount that upwards transmits to the automobile body with rotatory mode, and then the upper wheel seat takes place a small amount of displacements or the displacement is zero in vertical direction, and then realizes better shock attenuation effect.

Description

Children's vehicle damping wheel and children's vehicle

Technical Field

The application relates to the technical field of handcarts, in particular to a damping wheel of a baby carriage and the baby carriage.

Background

The trolley is used for loading articles or carrying children, and most use environments are outdoors. In order to make the child more comfortable or the goods less fragile, the wheels of the stroller are usually provided with shock-absorbing (or cushioning) functions.

For example, chinese patent publication No. CN 215826795U discloses a wheel and a hand buggy, in which a slider mounted with a wheel body is slidably fitted with a caster, the sliding direction is perpendicular to the radial direction of a wheel axle, and a spring compressed and restored in the radial direction is provided between the slider and the caster to achieve shock absorption. When the vehicle rapidly passes through a road surface with a bulge, the spring has no time to act, and then the spring is directly and radially transmitted to the vehicle body, so that the vehicle runs and bumps.

SUMMERY OF THE UTILITY MODEL

The application provides a bassinet shock attenuation wheel, the shock attenuation buffering effect is better.

The application provides bassinet shock attenuation wheel includes:

a wheel with a through axle;

a lower wheel seat having a support part located at both sides of the wheel and connected to both ends of the wheel shaft;

the upper wheel seat is rotationally connected with the lower wheel seat, and a unidirectional rotation limiting mechanism is arranged between the upper wheel seat and the lower wheel seat;

and the elastic piece is arranged between the lower wheel seat and the upper wheel seat and is used for absorbing the relative displacement between the lower wheel seat and the upper wheel seat.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the elastic member is a spring and is arranged substantially horizontally.

Optionally, the upper wheel seat and the lower wheel seat are respectively provided with a first installation part and a second installation part for fixing two ends of the spring, and the first installation part and the second installation part are respectively provided with a first convex column and a second convex column for inserting the spring.

Optionally, in a natural state, the first convex column and the second convex column are dislocated in a height direction.

Optionally, the elastic members are two arranged in parallel.

Optionally, the upper wheel seat has two connecting portions rotatably connected to the corresponding supporting portion, and the elastic member is disposed between the two connecting portions.

Optionally, the connecting portion is provided with a window for observing the elastic member.

Optionally, the supporting portion has a limiting step, and the edge of the connecting portion abuts against the limiting step to limit the unidirectional rotation of the connecting portion and the supporting portion.

The application still provides a bassinet, including mutual articulated preceding foot bar, back foot bar and handle pole, the aforesaid is installed to preceding foot bar arbitrary bassinet shock attenuation wheel.

The utility model provides a bassinet shock attenuation wheel is wheel seat and last wheel seat down between rotate to be connected, then when the highway section that has the protrusion is passed through fast, the lower wheel seat can reduce or eliminate the displacement volume that upwards transmits to the automobile body with rotatory mode, then the wheel seat takes place a small amount of displacements or the displacement is zero in vertical direction on going up, and then realizes better shock attenuation effect.

Drawings

FIG. 1 is an exploded view of a stroller shock absorbing wheel according to an embodiment of the present application;

FIG. 2 is a front view of a stroller shock absorbing wheel according to an embodiment of the present application;

FIG. 3 is a schematic view of the lower wheel mount of FIG. 2 rotating in a second direction;

FIG. 4 is a left side view of the damper wheel of the wagon of FIG. 2;

FIG. 5 is a structural view of an upper wheel seat in a shock absorbing wheel of a stroller in accordance with an embodiment of the present application;

FIG. 6 is a structural view of a lower wheel seat in a shock absorbing wheel of a stroller in accordance with an embodiment of the present application;

FIG. 7 isbase:Sub>A cross-sectional view of portion A-A of FIG. 4 inbase:Sub>A natural state;

FIG. 8 is a cross-sectional view of the lower wheel mount of FIG. 7 shown rotated in a second direction;

fig. 9 is a perspective view of a stroller according to an embodiment of the present application.

The reference numbers in the figures are as follows:

1. a wheel; 11. a first direction; 12. a second direction;

110. a wheel; 111. a hub; 112. a tire; 113. a wheel axle;

120. a lower wheel seat; 121. a support portion; 122. a rotating shaft; 123. a boundary line; 124. a second mounting portion; 125. A second convex column; 126. a limiting step;

130. an upper wheel seat; 131. a first mounting portion; 132. a first convex column; 133. a connecting portion; 134. a chamber; 135. a window; 136. an edge;

140. an elastic member;

2. a baby carriage; 21. a front foot bar; 22. a rear foot bar; 23. a handle rod.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In this application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any particular order or number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Referring to fig. 1 to 3, the present application provides a damping wheel 1 for a stroller, which includes a wheel 110, a lower wheel seat 120 and an upper wheel seat 130, wherein the wheel 110 includes a hub 111 and a tire 112 disposed on the hub 111, the hub 111 is provided with a wheel axle 113, and the lower wheel seat 120 has a supporting portion 121 connected to two ends of the wheel axle 113. The upper wheel seat 130 is used for connecting with the bottom of the stroller, the lower wheel seat 120 is rotatably connected with the upper wheel seat 130 through a rotating shaft 122, and a unidirectional rotation limiting mechanism is arranged between the upper wheel seat and the lower wheel seat.

The lower wheel seat 120 has a first direction 11 and a second direction 12 with the rotating shaft 122 as the axis as shown in fig. 2, and a vertical dividing line 123 passing through the rotating shaft 122 is shown, and the wheel shaft 113 is located at one side of the dividing line 123, so that when the wheel 1 passes through a protrusion on either the front side or the rear side, the lower wheel seat 120 rotates in the second direction to counteract the height change caused by the protrusion.

An elastic member 140 for absorbing a relative displacement between the upper wheel base 130 and the lower wheel base 120 (i.e., the displacement of the lower wheel base 120) is provided between the two. In particular, when the lower wheel base 120 rotates in the second direction 12, the elastic member 140 is gradually compressed to absorb and slow down the displacement change speed of the lower wheel base 120. Meanwhile, in the process that the wheel 1 passes through the protrusion, the elastic member 140 is reset to drive the lower wheel seat 120 to rotate along the first direction 11, and finally the lower wheel seat 120 is prevented from continuing to rotate along the first direction and staying at a certain position by the unidirectional rotation limiting mechanism. The state of the wheel in which the lower wheel seat is in this position is defined as a natural state. The unidirectional rotation limiting mechanism can be formed by abutting fit between the upper wheel seat and the lower wheel seat.

Referring to fig. 4 to 8, the elastic member 140 is a spring, and is disposed substantially horizontally in a natural state, and there is a component in the horizontal direction in the compression and the return of the spring, compared with the existing spring structure disposed vertically, the situation that the displacement is directly transmitted to the vehicle body due to a short time is effectively reduced, and the damping effect is better.

The substantially horizontal arrangement means that the central axis 141 of the spring is nearly straight. In an embodiment, the upper wheel base 130 and the lower wheel base 120 are respectively provided with a first mounting portion 131 and a second mounting portion 124 for fixing two ends of the spring, and the first mounting portion 131 and the second mounting portion 124 are respectively provided with a first convex pillar 132 and a second convex pillar 125 for inserting the spring. The inner walls of the first mounting portion 131 and the second mounting portion 124 respectively abut against two ends of the spring, and in the process that the lower wheel base 120 rotates along the second direction 12, the inner wall of the lower wheel base 120 is close to the inner wall of the upper wheel base 130 to compress the spring.

Since the lower wheel base 120 rotates, the inclination angle of the inner wall of the lower wheel base 120 relative to the inner wall of the upper wheel base 130 changes, so as to reduce or avoid the bending or twisting of the spring, as shown in fig. 7, in an embodiment, in a natural state, the first protruding pillar 132 and the second protruding pillar 125 are dislocated in a height direction and respectively abut against one side of the inner ring of the spring in a radial direction. The second convex column 125 is higher than the first convex column 132, the distance from the highest point of the second convex column 125 to the lowest point of the first convex column 132 is approximately equal to the inner diameter of the inner ring of the spring, and the central axis 141 of the spring is kept as a straight line.

During the rotation of the lower wheel base 120 in the second direction, the second stud 125 acts on the other side of the inner ring of the spring to bend the end of the spring downward, and the central axis 141 is curved (as shown in fig. 8). The lower wheel holder 120 is rotated in the first direction by the dual action of the force of the compression return of the spring and the force of the central shaft 141 returning to the straight line at the initial stage of the return of the spring after passing the projection, and the return is more rapid. At the final stage of the return, the central shaft 141 approaches a straight line, the compression return acting force of the spring also continuously decreases, the return speed is reduced, and the generation of large impact sound when the lower wheel seat 120 and the upper wheel seat 130 are abutted and matched is avoided. While ensuring that the return speed of the entire lower wheel base 120 is unchanged.

Referring back to fig. 1, in one embodiment, the two elastic members 140 are arranged in parallel (in the horizontal direction), so that the damping effect is better, and the safety function is to prevent the occurrence of the situation that one of the elastic members fails to damp due to various reasons or the lower wheel base rotates freely.

The upper wheel base 130 has two connecting portions 133 rotatably connected to the corresponding supporting portions 121, and the elastic member 140 is disposed between the two connecting portions 133. It can be understood that the two connecting portions 133, the first mounting portion 131 and the second mounting portion 124 enclose a chamber 134 for accommodating the elastic member 140, so as to protect the elastic member 140 and to make the appearance more compact.

For ease of maintenance, it is determined, for example, whether the elastic member 140 is dropped or lost, resulting in a shock absorption failure. Referring back to fig. 3, in an embodiment, at least one connection portion 133 is opened with a window 135 communicating with the cavity 134 for observing the condition of the elastic member. With reference to the foregoing embodiment, the two elastic members 140 are disposed in parallel, and the two elastic members 140 are respectively close to the two connecting portions 133, so that the two connecting portions 133 are both provided with the windows 135.

With regard to the one-way rotation limiting mechanism, the support portion 121 has a limit step 126, and the edge 136 of the connecting portion 133 abuts against the limit step 126 to limit the one-way rotation of the two, i.e., only allow the lower wheel holder 120 to rotate in the second direction 12.

The application still provides a bassinet 2, including mutual articulated preceding foot pole 21, back foot pole 22 and handle pole 23, the bassinet shock attenuation wheel 1 of any above-mentioned embodiment is installed to the bottom of preceding foot pole 21.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not to be construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Bassinet shock attenuation wheel, its characterized in that includes:

a wheel with a through axle;

a lower wheel seat having supporting parts located at both sides of the wheel and connected with both ends of the wheel shaft;

2. The stroller shock absorbing wheel according to claim 1, wherein the resilient member is a spring and is disposed substantially horizontally.

3. The stroller shock absorption wheel according to claim 2, wherein the upper wheel base and the lower wheel base are respectively provided with a first mounting part and a second mounting part for fixing two ends of the spring, and the first mounting part and the second mounting part are respectively provided with a first convex column and a second convex column for inserting the spring.

4. A stroller shock absorbing wheel according to claim 3, wherein said first and second studs are offset in height in a natural state.

5. A stroller shock absorbing wheel according to claim 2, wherein said elastic member is two arranged in parallel.

6. A stroller shock absorbing wheel according to claim 1, wherein said upper wheel mount has two connection portions rotatably connected to the corresponding support portion, and said elastic member is disposed between the two connection portions.

7. The stroller shock absorber wheel of claim 6, wherein the connecting portion defines a window for viewing the elastomeric member.

8. A stroller shock absorbing wheel according to claim 6, wherein the support portion has a stop step against which the edge of the connecting portion abuts to limit unidirectional rotation of the two.

9. A stroller comprising a front leg, a rear leg and a handle, which are hinged to each other, wherein the front leg is provided with a shock-absorbing wheel of the stroller as claimed in any one of claims 1 to 8.