CN220243339U - Bearing device - Google Patents

Abstract

The utility model discloses a bearing device which comprises an unfolding state and a folding state, wherein the bearing device comprises a front vertical frame, a rear vertical frame and a bottom frame arranged between the front vertical frame and the rear vertical frame, the bottom frame comprises a front part hinged with the front vertical frame and a rear part hinged with the rear vertical frame, the front vertical frame and the rear vertical frame move towards each other when being folded, a first linkage piece hinged with the front vertical frame and the rear vertical frame is arranged between the front vertical frame and the rear vertical frame, a second linkage piece hinged with the rear vertical frame and the front vertical frame is arranged between the rear part and the front vertical frame, and the first linkage piece and the second linkage piece are positioned below the bottom frame. The underframe is used as a component for mainly bearing the weight of the object, an additional reinforcing component (such as a cross beam) connected between the two upright posts and positioned above the underframe is not needed, the structure is simple, and the folding linkage is assisted by the first linkage piece and the second linkage piece. And the two linkage members form a triangle structure with the underframe and the upright post in the unfolding state to improve the structural strength.

Description

Bearing device

Technical Field

The application relates to the technical field of children products, in particular to a bearing device.

Background

A hand truck is mainly used for storing articles or carrying children outdoors and when traveling.

For example, chinese patent publication No. CN 208119209U discloses a folding cart comprising: four wheels, a bottom surface support frame, four connecting upright posts, a folding handrail, four cross beams, two folding mechanisms and a connecting rod connected with the cross beams and the bottom surface support frame. The handcart often sets up the crossbeam at the bottom surface support frame and improves whole car structural strength to can set up a connecting rod between crossbeam and bottom surface support frame and realize folding interlock.

Disclosure of Invention

The application provides a bearing device, which is different from the existing folding structure and belongs to a new folding structure.

The application provides a bear device, have expansion state and folding state, including the preceding grudging post that has the front wheel, have the back grudging post of rear wheel, and set up chassis between preceding grudging post and the back grudging post, the chassis include with preceding grudging post articulated front portion and with back grudging post articulated rear portion, during folding preceding grudging post and back grudging post move in opposite directions and draw close, be provided with between front portion and the back grudging post with both articulated first interlock, the rear portion with be provided with between the preceding grudging post with both articulated second interlock, first interlock and second interlock are located the below of chassis.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, the front and rear portions are hinged to each other.

Optionally, the front and rear portions are hinged at a first hinge point provided with a locking mechanism to hold the carrier in the unfolded state.

Optionally, the front and rear portions are adjacent to each other, and the first and second links are hinged to each other.

Optionally, the first linkage member and the second linkage member are hinged at a second hinge point, and the second hinge point is provided with a locking mechanism for keeping the carrying device in the unfolded state.

Optionally, the front and rear portions are coplanar in the deployed state.

Optionally, the front part, the rear vertical frame and the second linkage member form a triangle in the unfolded state, and the rear part and the second linkage member have an included angle alpha, wherein alpha is more than 0 and less than 20 degrees;

the front part, the rear part, the front vertical frame and the first linkage piece form a triangle in the unfolding state, and the front part and the first linkage piece have an included angle beta which is more than 0 and less than 20 degrees.

Optionally, the front and rear parts are plate-shaped, or the front and rear parts include two side bars hinged to the respective uprights, respectively, and a cross bar connected between the side bars.

Optionally, the front stand has front wheels and the rear stand has rear wheels.

Optionally, the front stand and the rear stand are provided with bibs, and the bottom frame supports the bottoms of the bibs.

The bearing device can only comprise the front stand, the rear stand and the underframe, the front stand and the rear stand are driven to be close to complete the folding of the whole vehicle through linkage folding of the underframe, and a reinforcing part (such as a cross beam) above the underframe can be omitted.

Drawings

FIG. 1 is a schematic view of a carrier in an unfolded state according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the carrying device of FIG. 1 when folded;

FIG. 3 is a schematic view of the carrying device of FIG. 1 in a folded state;

FIG. 4 is a schematic view of a carrier in an unfolded state according to another embodiment of the present disclosure;

FIG. 5 is a schematic view of the carrying device of FIG. 4 when folded;

fig. 6 is a schematic view of the carrying device in a folded state of fig. 4.

Reference numerals in the drawings are described as follows:

100. a front vertical frame; 110. a front wheel; 200. a rear vertical frame; 210. a rear wheel;

300. a chassis; 310. a front part; 320. a rear portion; 330. a first linkage; 340. a second linkage member; 351. a first hinge point; 352. and a second hinge point.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

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 an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements 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 herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

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

Referring to fig. 1 to 6, the present application provides a carrying device having an unfolded state and a folded state, including a front stand 100, a rear stand 200, and a bottom chassis 300 disposed between the front stand 100 and the rear stand 200. In the drawings, only schematic structural views in the longitudinal direction (i.e., the front and rear directions) are shown for ease of understanding.

Wherein the chassis 300 comprises a front part 310 hinged with the front vertical frame 100 and a rear part 320 hinged with the rear vertical frame 200, a first linkage 330 hinged with the front part 310 and the rear vertical frame 200 is arranged between the front part 320 and the rear vertical frame 200, and a second linkage 340 hinged with the rear part 320 and the front vertical frame 100 is arranged between the rear part and the rear vertical frame. When folding, one of the front part 310, the rear part 320, the first linkage 330 and the second linkage 340 rotates, and the other three synchronously rotate and move towards each other, namely at least the front part 310 and the rear part 320 rotate towards each other. And further moves the front and rear frames 100 and 200 toward each other.

While the first linkage 330 and the second linkage 340 are positioned below the chassis 300 and are arranged in an X-shaped cross, in the unfolded state, the upper side of the chassis 300 is kept free of other parts except for the upper side, so that the assembly of articles and bibs is facilitated. For example, the front and rear frames 100 and 200 are provided with bibs, and the bottom chassis 300 supports the bottoms of the bibs. The carrying device may be a crib or a trolley, for example, for convenience of movement, a front wheel 110 is additionally installed at the bottom of the front stand 100, and a rear wheel 210 is additionally installed at the bottom of the rear stand 200.

The underframe in the application is used as a part for mainly bearing the bearing capacity of the weight of the article, and an additional reinforcing part (such as a cross beam) connected between the front vertical frame and the rear vertical frame and positioned above the underframe is not needed, so that the structure is simple. And the folding linkage is assisted by the first linkage piece and the second linkage piece.

Referring to fig. 1-3, in one embodiment, the front portion 310 and the rear portion 320 are hinged to each other and to a first hinge point 351, at which first hinge point 351 a locking mechanism is provided to hold the carrier in a deployed state.

Referring to fig. 4-6, in another embodiment, the front portion 310 and the rear portion 320 are adjacent to each other but are not directly hinged, and the first linkage 330 and the second linkage 340 are hinged to each other and to the second hinge point 352. A locking mechanism is provided at the second hinge point 352 to hold the carrier in the unfolded state.

When the locking mechanism in the two embodiments is locked, the front portion 310 and the rear portion 320 are coplanar and parallel to the horizontal plane, facilitating storage of the article.

The aforementioned first link 330 and the second link 340 are located below the chassis 300, that is, the hinge points of the two links and the front and rear uprights are lower than those of the front and rear uprights, and the front 310, the rear 320, the rear uprights 200 and the second link 340 form a triangle in the unfolded state based on the fact that the front 310 and the rear 320 are coplanar. Similarly, the front portion 310, the rear portion 320, the front upright 100 and the first linking member 330 are also triangular in the unfolded state, so as to improve the structural strength of the whole vehicle.

In the unfolded state, the rear portion 320 and the second linkage 340 have an included angle α,0 < α < 20 degrees; the front portion 310 has an angle beta with the first linkage 330 of 0 < beta < 20 degrees. When folded, α and β gradually decrease toward 0 degrees until α=β=0 degrees (the front 310 first links 330 are parallel) or less than 0 degrees in the folded state.

Preferably, the front portion 310 and the rear portion 320 are symmetrically arranged, and the first link 330 and the second link 340 are symmetrically arranged.

In some embodiments, both the front portion 310 and the rear portion 320 are plate-shaped. Or the front part 310 and the rear part 320 include two side bars (not shown) hinged to the respective uprights, respectively, and a cross bar (not shown) connected between the side bars. Both approaches can improve the structural strength of the chassis 300. The first and second links 330 and 340 may be the same structure as the front and rear portions 310 and 320, or may be rods.

According to the bearing device, the underframe is used as a part for mainly bearing the bearing capacity of the weight of the article, an additional reinforcing part (such as a cross beam) connected between the front vertical frame and the rear vertical frame is not required to be configured, the structure is simple, and folding linkage is assisted to be completed through the first linkage part and the second linkage part. And the two linkage members form a triangle structure with the underframe and the upright post in the unfolding state to improve the structural strength.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.

The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application.

Claims (10)

1. The bearing device comprises a front vertical frame, a rear vertical frame and a bottom frame arranged between the front vertical frame and the rear vertical frame, wherein the bottom frame comprises a front part hinged with the front vertical frame and a rear part hinged with the rear vertical frame, and the front vertical frame and the rear vertical frame move towards each other during folding.

2. The carrier of claim 1, wherein the front and rear portions are hinged to each other.

3. The carrier as claimed in claim 2, wherein the front and rear portions are hinged at a first hinge point, the first hinge point being provided with a locking mechanism to hold the carrier in an unfolded state.

4. The carrier of claim 1, wherein the front and rear portions are adjacent to each other and the first and second links are hinged to each other.

5. The carrier of claim 4, wherein the first and second links are hinged at a second hinge point, the second hinge point being provided with a locking mechanism that holds the carrier in the deployed state.

6. The carrier of claim 1, wherein the front and rear portions are coplanar in the deployed state.

7. The carrying device of claim 6, wherein the front, rear uprights and second linkages form a triangle in the deployed state, the rear and second linkages having an angle α,0 < α < 20 degrees;

the front part, the rear part, the front vertical frame and the first linkage piece form a triangle in the unfolding state, and the front part and the first linkage piece have an included angle beta which is more than 0 and less than 20 degrees.

8. The carrying device according to claim 1, wherein the front and rear portions are each plate-shaped, or the front and rear portions include two side bars hinged to the respective uprights, respectively, and a cross bar connected between the side bars.

9. The carrying device of claim 1, wherein the front uprights have front wheels and the rear uprights have rear wheels.

10. The carrying device of claim 1, wherein the front and rear uprights are provided with bibs, the chassis supporting the bottom of the bibs.