CN215552326U - Universal and directional automatic switching wheel and baby stroller - Google Patents

Abstract

A wheel capable of automatically converting universal direction and directional direction and a child stroller comprise a wheel, a wheel fork, a wheel shaft and a wheel joint, wherein the wheel fork is provided with a notch, the wheel is pivoted on the wheel fork through the wheel shaft, the wheel shaft can move in the notch, the wheel fork is connected with the wheel joint in a rotating mode, a rotation stopping mechanism is arranged between the wheel fork and the wheel joint and used for limiting rotation of the wheel fork and the wheel joint, the rotation stopping mechanism is effective when the wheel fork and the wheel joint move to a first direction, the wheel is a directional wheel, and the rotation stopping mechanism is ineffective when the wheel fork and the wheel joint move to a second direction opposite to the first direction, and the wheel becomes a universal wheel. Still include a children's shallow, children's shallow is last to be set up the above the wheel of universal and directional automatic switch, the wheel can be dismantled the installation fast.

Description

Universal and directional automatic switching wheel and baby stroller

Technical Field

The utility model relates to the technical field of carts.

Background

The wheel in front of the conventional cart is the universal wheel, the wheel at the back is the directional wheel, the pushing is convenient, at present, the cart capable of reversing is common in the market, but the conventional pushing generally pushes the wheel to be reversed, the wheel is universal and directional, the wheel is not switched, or the wheel needs to be manually set, and the design is not only inconvenient, but also inconvenient to push.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the automatic wheel universal and directional switching mechanism which is ingenious in design, simple and firm in structure, small in size, low in production cost and capable of directly realizing the wheel universal and directional switching when a pushing handle of a cart is reversed in view of the current technical situation.

The technical scheme adopted for solving the technical problems is as follows: a universal and directional automatic switching wheel comprises a wheel, a wheel fork, a wheel shaft and a wheel joint, wherein the wheel fork is provided with a notch, the wheel is pivoted on the wheel fork through the wheel shaft, the wheel shaft can move in the notch, the wheel fork is connected with the wheel joint in a rotating mode, a rotation stopping mechanism is arranged between the wheel fork and the wheel joint and used for limiting rotation of the wheel fork and the wheel joint, the rotation stopping mechanism is effective when the wheel fork moves to a first direction, the wheel is a directional wheel, and the rotation stopping mechanism is ineffective when the wheel fork moves to a second direction opposite to the first direction, so that the wheel becomes a universal wheel.

The rotation stopping mechanism comprises a connecting assembly arranged in the wheel fork, a rotation stopping convex part and a rotation stopping concave part arranged at the lower end of the wheel joint, the rotation stopping concave part is used for providing an elastic piece, the movement trend of the rotation stopping convex part to the rotation stopping concave part is arranged in the wheel fork, the connecting assembly is pivoted in the wheel fork, the rotation stopping convex part is arranged at the upper end of the connecting assembly, the lower end of the connecting assembly is provided with a notch which is pivoted with the wheel shaft, when the wheel moves to a first direction, the rotation stopping convex part is clamped and limited in the rotation stopping concave part under the action of the elastic piece, the wheel is a directional wheel, when the wheel moves to a second direction opposite to the first direction, the rotation stopping convex part at the upper end of the connecting assembly is driven by the wheel shaft to be separated from the rotation stopping concave part, and the wheel becomes a universal wheel.

The wheel is provided with a brake mechanism, the brake mechanism comprises a sliding piece arranged on the wheel fork in a sliding manner, a brake disc fixedly arranged on the wheel and provided with a brake groove, the sliding piece is provided with a clamping part capable of being inserted into the brake groove, the brake mechanism is provided with an unlocking state and a braking state, the brake mechanism also comprises a driving sliding block, a connecting piece connected between the sliding piece and the driving sliding block, a first elastic piece used for providing the upward movement trend of the driving sliding block and a second elastic piece used for providing the sliding piece to slide towards the brake groove, and a connecting rod and a pressing sliding block used for driving the connecting rod to press downwards when the connecting rod moves relative to the wheel joint are arranged in the wheel joint;

the acting force of the first elastic piece on the sliding piece is opposite to the acting force of the second elastic piece on the sliding piece, the acting force of the first elastic piece on the sliding piece is greater than the acting force of the second elastic piece on the sliding piece, the clamping part is separated from the brake groove under the condition of no external force, and the brake mechanism is in a brake release state; the connecting rod moves to drive the pressing sliding block to move downwards, the driving sliding block which is in contact with the pressing sliding block also moves downwards, the acting force applied by the first elastic piece to the sliding piece fails, the sliding piece slides to the brake groove under the acting force of the second elastic piece, the clamping part is inserted in the brake groove, and the brake mechanism is in a brake state.

The utility model also provides another technical scheme: the utility model provides a children's shallow, children's shallow is last to be set up the above wheel of universal and directional automatic switch, the wheel can be dismantled the installation fast.

The beneficial effects involved in the utility model are as follows: the universal steering device has the advantages of simple structure, capability of freely switching between the universal driving state and the directional driving state under the driving without external power, convenience and labor saving in operation, flexibility and effectiveness.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a side partial cross-sectional view of the present invention.

Fig. 4 is a side view of the fork of the present invention.

Fig. 5 is a side view of the connection assembly of the present invention.

Fig. 6 is a side view of the present invention in orientation.

FIG. 7 is a side view of the present invention in gimbal.

FIG. 8 is a perspective view of the brake structure of the present invention.

Fig. 9 is an exploded view of the present invention.

Detailed Description

The utility model will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The description as set forth herein is intended to provide a further understanding of the utility model and forms a part of this application and is to be construed as providing an exemplification of the utility model and is not intended to limit the utility model to the precise forms disclosed herein.

In this embodiment, the directions of "front", "rear", "left", "right", "up", "down", and the like, referred to in this embodiment, are all described with reference to the direction the user faces when pushing, i.e., the direction the push handle lever is in the forward pushing state, and the direction the user faces when pushing is the front.

Specifically, as shown in fig. 1, the wheel with automatic universal and directional conversion comprises a wheel 1, a wheel fork 2, a wheel shaft a and a wheel joint 3, wherein the wheel fork 2 is provided with a notch a1, the wheel 1 is pivoted on the wheel fork 1 through the wheel shaft a, the wheel shaft a can move in the notch a1, the wheel fork 2 is rotatably connected with the wheel joint 3, and a rotation stopping mechanism 4 is arranged between the wheel fork 2 and the wheel joint 3 and used for limiting the rotation of the wheel fork 2 and the wheel joint 3.

As shown in fig. 5, the rotation stopping mechanism 4 includes a connecting component disposed in the wheel fork 2, a rotation stopping protrusion 4a, a rotation stopping recess 4b disposed at the lower end of the wheel joint 3, and an elastic member 44 disposed in the wheel fork 2 for providing a tendency of the rotation stopping protrusion 4a to move toward the rotation stopping recess 4b, and preferably, the connecting component includes a connecting member 41, a connecting member 42 and a connecting member 43, the connecting member 41 is rotatably connected with the wheel fork 2 around an axis b, the connecting member 42 is rotatably connected with the wheel fork 2 around an axis c, the connecting member 43 is connected with the connecting member 42 around an axis d notch, the connecting member 43 can move in the up-down direction, the rotation stopping protrusion 4a is disposed at the upper end of the connecting member 43, the elastic member 44 is disposed below the connecting member 43, the lower end of the connecting member 41 is provided with a notch a2 to be pivoted with the wheel axle a, the connecting member 41, the connecting member 42 and the connecting member 43 form linkage, and when moving in the first direction, the rotation stopping convex part 4a is clamped and limited in the rotation stopping concave part 4b under the action of the elastic piece 44, the wheel 1 is a directional wheel, when the wheel moves towards a second direction opposite to the first direction, the wheel shaft a drives the rotation stopping convex part 4a at the upper end of the connecting component to be separated from the rotation stopping concave part 4b, and the wheel 1 becomes a universal wheel.

As shown in fig. 8, the wheel is provided with a brake mechanism, which comprises a sliding part 51 slidably arranged on the wheel fork 2 and a brake disc fixedly arranged on the wheel 2 and having a brake groove 5a, wherein the sliding part 51 is provided with a clamping part 5b capable of being inserted into the brake groove, the brake mechanism has an unlocking state and a braking state, and further comprises a driving slider 52 and a connecting part connected between the sliding part 51 and the driving slider 52, a first elastic part 53 for providing upward movement tendency of the driving slider 52 and a second elastic part 54 for providing sliding of the sliding part 51 to the brake groove, and a connecting rod 55 and a pressing slider 56 for driving the pressing when the connecting rod 55 moves relative to the wheel joint 3 are arranged in the wheel joint 3;

the acting force of the first elastic piece 53 on the sliding piece 51 is opposite to the acting force of the second elastic piece 54 on the sliding piece 51, the acting force of the first elastic piece on the sliding piece 53 on the sliding piece 51 is larger than the acting force of the second elastic piece 54 on the sliding piece 51, the clamping part 5b is separated from the brake groove 5a under the action of no external force, and the brake mechanism is in a brake release state; the link 55 moves to drive the push-down slider 56 to move downwards, the driving slider 52 in contact with the push-down slider 56 also moves downwards, the acting force of the first elastic element 53 on the sliding element 51 is disabled, the sliding element 51 slides towards the brake slot 5a under the acting force of the second elastic element 54, the clamping part 5b is inserted in the brake slot 5a, and the brake mechanism is in a brake state.

The utility model provides a children's shallow, set up the wheel of above-mentioned universal and directional automatic switch, the wheel can be dismantled the installation fast, and the mechanism here is common general structure, just does not specifically describe.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention, such as increasing or decreasing the number of the link assemblies or changing the moving direction of the link member 43. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A universal and directional automatic switching wheel is characterized in that: the wheel fork is provided with a notch, the wheel is pivoted on the wheel fork through the wheel shaft, the wheel shaft can move in the notch, the wheel fork is rotationally connected with the wheel joint, a rotation stopping mechanism is arranged between the wheel fork and the wheel joint and used for limiting the rotation of the wheel fork and the wheel joint, the rotation stopping mechanism is effective when the wheel moves to a first direction, the wheel is a directional wheel, and the rotation stopping mechanism is ineffective when the wheel moves to a second direction opposite to the first direction, so that the wheel becomes a universal wheel.

2. The wheel of claim 1, wherein: the rotation stopping mechanism comprises a connecting assembly arranged in a wheel fork, a rotation stopping convex part and a rotation stopping concave part arranged at the lower end of the wheel joint, the rotation stopping concave part is used for providing the movement trend of the rotation stopping convex part to the rotation stopping concave part to an elastic piece arranged in the wheel fork, the connecting assembly is pivoted in the wheel fork, the rotation stopping convex part is arranged at the upper end of the connecting assembly, the lower end of the connecting assembly is provided with a notch, the notch is pivoted with the wheel shaft, when the wheel moves to a first direction, the rotation stopping convex part is clamped and limited in the rotation stopping concave part under the action of the elastic piece, when the wheel is a directional wheel and moves to a second direction opposite to the first direction, the wheel shaft drives the rotation stopping convex part at the upper end of the connecting assembly to be separated from the rotation stopping concave part, and the wheel becomes a universal wheel.

3. The wheel of claim 1, wherein: the wheel is provided with a brake mechanism, the brake mechanism comprises a sliding part arranged on the wheel fork in a sliding manner and a brake disc fixedly arranged on the wheel and provided with a brake groove, a clamping part which can be inserted into the brake groove is arranged on the sliding part, the brake mechanism has an unlocking state and a braking state, the brake mechanism also comprises a driving slide block, a connecting piece connected between the sliding part and the driving slide block, a first elastic piece used for providing the upward movement trend of the driving slide block and a second elastic piece used for providing the sliding part to the brake groove, a connecting rod is arranged in the wheel joint, and a pressing slide block which is pressed down by the connecting rod when the connecting rod moves relative to the wheel joint is driven,

the acting force of the first elastic piece on the sliding piece is opposite to the acting force of the second elastic piece on the sliding piece, the acting force of the first elastic piece on the sliding piece is greater than the acting force of the second elastic piece on the sliding piece, the clamping part is separated from the brake groove under the condition of no external force, and the brake mechanism is in a brake release state; the connecting rod moves to drive the pressing sliding block to move downwards, the driving sliding block which is in contact with the pressing sliding block also moves downwards, the acting force applied by the first elastic piece to the sliding piece fails, the sliding piece slides to the brake groove under the acting force of the second elastic piece, the clamping part is inserted in the brake groove, and the brake mechanism is in a brake state.

4. A stroller, characterized in that: the children's cart is provided with the universal and directional automatic switching wheel as claimed in any one of claims 1-3, and the wheel can be quickly disassembled and assembled.

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