CN220549072U - Folding trailer - Google Patents

Abstract

The utility model belongs to the technical field of trailers, and discloses a folding trailer. The folding trailer comprises a frame main body, a plurality of wheel assemblies and a handle assembly, wherein the frame main body is in an unfolding state and a folding state; the frame main body comprises a frame structure composed of an underframe component, two first surrounding walls which are oppositely arranged and two second surrounding walls which are oppositely arranged; the first enclosing wall consists of two groups of side wall components which are symmetrically arranged and mutually hinged, wherein a neutral column pipe, a connecting rod component and an inclined supporting pipe are connected end to end and mutually hinged, the connecting rod component comprises a plurality of armrest pipes which are connected end to end in a hinged manner, and when the frame main body is unfolded, the armrest pipes of the two side wall components are in the same straight line; the wheel assembly is arranged at the bottom of the frame main body; the handle assembly is connected to any one of the second enclosing walls. The folding trailer occupies small space when in a folded state, and is convenient to store; the handrail pipes at the uppermost layer are all in the same straight line in the unfolding state, so that the whole mechanical strength is higher, and the device can be suitable for carrying different objects.

Description

Folding trailer

Technical Field

The utility model relates to the technical field of trailers, in particular to a folding trailer.

Background

In daily life and production, luggage, articles and the like often need to be carried, and a trailer tool is often used in the carrying process. Because of its characteristics that promote conveniently and labour saving and time saving, obtain extensive application when carrying the thing, many all are in the flat board of present trailer under the installation wheel and consignment, there is not the rail around the flat board of this kind of trailer, and the total amount of loading luggage or article is limited, and it can't fold, need occupy great space under the unused state. Along with the improvement of life quality of people, the demand for foldable trailers is also improved, for example, when in use environments such as camping, the trailers need to be installed in automobiles, but the trailers in the prior art are large in size and difficult to be placed in automobiles, and occupy large space when being stored and idle, so that the foldable trailers are more inconvenient to use.

In the prior art, in order to facilitate folding and storage, the frame surrounding frame of the folding trailer is of a foldable structure, but most of the existing trailers are complicated to operate when folded, and the occupied space after folding is still large, so that storage and carrying are affected; and the integral strength of the folding trailer is also influenced after unfolding, and the phenomenon that the folding trailer is automatically retracted and the like caused by connection failure easily occurs when carrying heavy objects, so that the use experience is seriously influenced.

Accordingly, there is a need to provide a novel folding trailer to solve the above technical problems in the prior art.

Disclosure of Invention

The utility model aims to provide a folding trailer which occupies small space in a folding state and is convenient to store; the handrail pipes at the uppermost layer are all in the same straight line in the unfolding state, so that the whole mechanical strength is higher, and the device can be suitable for carrying different objects.

To achieve the purpose, the utility model adopts the following technical scheme:

the folding trailer comprises a frame main body, a plurality of wheel assemblies and a handle assembly, wherein the frame main body is in an unfolding state and a folding state; the frame main body comprises a frame structure formed by an underframe component, two first surrounding walls which are oppositely arranged and two second surrounding walls which are oppositely arranged; the first surrounding wall comprises two groups of side wall components which are symmetrically arranged and mutually hinged, the side wall components comprise upright post pipes, connecting rod components and inclined supporting pipes, the upright post pipes, the connecting rod components and the inclined supporting pipes are connected end to end and mutually hinged, the connecting rod components comprise a plurality of armrest pipes which are connected end to end in a hinged mode, and when the frame main body is unfolded, the armrest pipes of the two side wall components are all in the same straight line; the wheel assemblies are distributed at the bottom of the frame main body; the handle assembly is connected to any one of the second enclosing walls.

Optionally, two handrail pipes are provided, one of the handrail pipes is a short handrail pipe, the other handrail pipe is a long handrail pipe, one end of the short handrail pipe is hinged to the upright pipe, the other end of the short handrail pipe is hinged to one end of the long handrail pipe, and the other end of the long handrail pipe is hinged to the inclined supporting pipe through a supporting pipe joint; the support tube joints of the two side wall assemblies are hinged with each other.

Optionally, the side wall assembly further includes a supporting plate assembly, where the supporting plate assembly includes a short supporting plate and a long supporting plate, one end of the short supporting plate is hinged to the long handrail tube, the other end of the short supporting plate is hinged to one end of the long supporting plate, and the long supporting plate is hinged to the inclined supporting tube.

Optionally, the other ends of said elongated support strips of both said side wall assemblies are hinged to each other.

Optionally, a limiting boss is protruding to be equipped with on the one end that above-mentioned short supporting piece is close to above-mentioned long supporting piece, and when the main frame was expanded, above-mentioned long supporting piece butt was in above-mentioned limiting boss and above-mentioned short supporting piece is in the same straight line with above-mentioned long supporting piece.

Optionally, the second enclosure wall includes two side rail pipes and two side support pipes hinged to each other, one end of one of the upright pipes is hinged to one of the side rail pipes, the other end is hinged to one end of one of the side support pipes, the other end of the side support pipe is hinged to the other side rail pipe, and when the frame body is unfolded, the two side rail pipes are in a same straight line.

Optionally, when the frame body is unfolded, a preset distance is provided between the two side rail tubes.

Optionally, the handle assembly comprises a traction rod, wherein the bottom end of the traction rod is hinged with two connecting rods, and one ends of the two connecting rods are hinged with the two upright posts in a one-to-one correspondence manner; the hinge joint of the two side support pipes is provided with a fixing clamp, and the traction rod can be accommodated in the fixing clamp.

Optionally, the underframe assembly includes a middle seat and 4 bottom support tubes, one ends of the bottom support tubes are hinged to the upright tubes in a one-to-one correspondence manner, and the other ends of the bottom support tubes are hinged, detachably connected or in limiting connection with the middle seat.

Optionally, the middle seat is provided with 4 holding grooves, and the side walls of the holding grooves are all provided with through holes, and when the frame main body is unfolded, the through holes are used for inserting fixing pieces, so that one end of the bottom supporting tube can be correspondingly accommodated in and fixed to the holding grooves one by one.

The beneficial effects are that:

in this embodiment, the chassis assembly, the two oppositely disposed first enclosing walls and the two oppositely disposed second enclosing walls form a frame body of a frame structure, and the frame body has an unfolded state and a folded state. Specifically, the first enclosure wall of the frame main body comprises two groups of side wall components which are symmetrically arranged and mutually hinged, the side wall components are formed by mutually hinging the upright post pipes, the connecting rod components and the inclined supporting pipes in an end-to-end connection mode, when the frame main body is in an unfolding state, a plurality of handrail pipes of the connecting rod components are all in the same straight line, not only can accommodating parts such as a cloth bag be placed, but also can be used for being used as handrails to be used for clamping the bracket, the structure is simpler, the overall connection strength and the mechanical strength can be improved, and the frame main body is suitable for carrying heavy objects. When the frame main body is converted into a folding state from an unfolding state, the hinge joints of the plurality of armrest pipes are bent downwards, so that the inclined support pipe rotates and approaches the upright pipe, the folding and storage of the first enclosing wall and the frame main body are realized, and the occupied space is smaller when the frame main body is in the folding state.

Drawings

FIG. 1 is an isometric view of a folded trailer in an unfolded state, according to an embodiment of the present utility model;

FIG. 2 is a top view of a folded trailer in an unfolded state, as provided by embodiments of the present utility model;

FIG. 3 is an isometric view of a folded trailer in a folded condition, provided in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic illustration of a first enclosure wall folding process provided in accordance with an embodiment of the present utility model;

fig. 5 is a schematic diagram of a second enclosure wall folding process provided in an embodiment of the utility model.

In the figure:

100. a chassis assembly; 110. a middle seat; 120. a bottom support tube;

200. a first enclosure wall; 210. a stand column pipe; 221. a short handrail tube; 222. a long handrail tube; 230. a diagonal support tube; 231. supporting the pipe joint; 241. a short support sheet; 242. a long support sheet; 243. a limit boss;

300. a second enclosure wall; 310. a side rail tube; 320. a side support tube; 330. a hinge;

400. a wheel assembly;

500. a handle assembly; 510. a traction rod; 520. and (5) connecting a rod.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The specific structure and technical solution of the folding trailer in this embodiment will be described in detail with reference to fig. 1 to 5.

Referring to fig. 1 and 4, in the present embodiment, the folding trailer includes a frame body, a plurality of wheel assemblies 400 and a handle assembly 500, wherein the frame body has an unfolded state (as shown in fig. 1 and 2) and a folded state (as shown in fig. 3); the frame body comprises a frame structure consisting of a chassis assembly 100, two oppositely arranged first enclosing walls 200 and two oppositely arranged second enclosing walls 300; the first enclosure wall 200 includes two sets of side wall components which are symmetrically arranged and hinged to each other, the side wall components include a column pipe 210, a connecting rod component and an inclined support pipe 230, the column pipe 210, the connecting rod component and the inclined support pipe 230 are connected end to end and are hinged to each other, the connecting rod component includes a plurality of armrest pipes connected end to end in a hinged manner, and when the frame main body is unfolded, the armrest pipes of the two side wall components are all in the same straight line; the wheel assemblies 400 are disposed at the bottom of the frame body; the handle assembly 500 is connected to any one of the second surrounding walls 300.

The frame body of the frame structure is formed by the underframe assembly 100, two oppositely disposed first enclosing walls 200 and two oppositely disposed second enclosing walls 300 in this embodiment, and has an unfolded state and a folded state. Specifically, the first enclosure wall 200 of the frame body includes two sets of side wall components that are symmetrically arranged and are mutually hinged, the side wall components are formed by connecting upright post tubes 210, connecting rod components and inclined support tubes 230 in an end-to-end manner, when the frame body is in an unfolding state, a plurality of handrail tubes of the connecting rod components are all in the same straight line, not only can accommodating parts such as a cloth bag be placed, but also can be used as handrails to be used for clamping brackets, the structure is simpler, the overall connection strength and the mechanical strength can be improved, and the frame is suitable for carrying heavy objects. Referring to fig. 4, when the frame body is converted from the unfolded state to the folded state, the hinge portions of the plurality of armrest tubes are bent downward, so that the diagonal support tube 230 rotates and approaches the pillar tube 210, folding and storage of the first enclosure wall 200 and the frame body are achieved, and the space occupied by the folded frame body is smaller.

The wheel assembly 400 in this embodiment is specifically a universal wheel assembly, and the universal wheel assembly is provided with four wheels, which are respectively disposed at the lower ends of the four stand pipes 210, and the universal wheel assembly can facilitate dragging or pushing the folding trailer along different directions, which is not described herein.

Referring to fig. 1 and 2, in the present embodiment, the chassis assembly 100 includes a middle seat 110 and 4 bottom support tubes 120, one ends of the bottom support tubes 120 are hinged to the upright tubes 210 in a one-to-one correspondence manner, and the other ends of the bottom support tubes 120 are hinged, detachably connected or limitedly connected to the middle seat 110. When the folding trailer is folded, the underframe assembly 100 is also folded together, and when the folding trailer is folded, one end of the bottom support tube 120 can be detached from the middle seat 110, or the bottom support tube 120 of the middle seat 110 is hinged in a rotating manner, or the bottom support tubes 120 of the middle seat 110 are connected in a sliding limiting manner to realize mutual approaching of the four bottom support tubes 120, so that the underframe assembly 100 is folded.

Further, the middle seat 110 is provided with 4 receiving slots, and the side walls of the receiving slots are provided with through holes, so that the through holes are used for inserting fixing members when the frame body is unfolded, and one end of the bottom support tube 120 can be correspondingly accommodated in and fixed to the receiving slots one by one. The bottom supporting tube 120 is accommodated in the accommodating groove, and the fixing piece is penetrated in the through hole to fix the supporting tube, so that the underframe assembly 100 is kept stable, the periphery of the frame main body is unfolded, the automatic folding of the frame main body is avoided, and the stability of the folding trailer in the unfolded state is further improved.

Referring to fig. 3 and 5, the handle assembly 500 in the present embodiment includes a traction rod 510, wherein two connecting rods 520 are hinged at the bottom end of the traction rod 510, and one ends of the two connecting rods 520 are hinged to the two upright tubes 210 in a one-to-one correspondence; a fixing clip is provided at the hinge of the two side support pipes 320, and the traction rod 510 can be received in the fixing clip. Further, a handle for manual or machine dragging is provided at the top of the traction rod 510, and the traction rod 510 is a telescopic rod, so that carrying operation can be performed in different application scenarios.

The detailed structure of the first enclosure wall 200 in this embodiment is described in detail below with reference to fig. 4. Optionally, two handrail pipes are provided, one of the handrail pipes is a short handrail pipe 221, the other handrail pipe is a long handrail pipe 222, one end of the short handrail pipe 221 is hinged to the upright pipe 210, the other end is hinged to one end of the long handrail pipe 222, and the other end of the long handrail pipe 222 is hinged to the inclined support pipe 230 through a support pipe joint 231; the support tube joints 231 of the two above-mentioned side wall assemblies are hinged to each other. Through setting up two handrail pipes, and one is short handrail pipe 221, and another is long handrail pipe 222, can simplify the structure of the side wall subassembly of first enclosing wall 200 to two stay tube joints 231 can play limiting displacement each other, prevent that two side wall subassembly rotation angle is too big to cause first enclosing wall 200 to be folded in the back, make two link assemblies of first enclosing wall 200 be in same straight line all the time when folding trailer is in the state of expanding, ensure the stability and the mechanical strength of connection.

Further, the side wall assembly further includes a support plate assembly including a short support plate 241 and a long support plate 242, one end of the short support plate 241 is hinged to the long handrail tube 222, the other end is hinged to one end of the long support plate 242, and the long support plate 242 is hinged to the inclined support tube 230. The side wall assembly thus provided can make triangular shapes between the support sheet assembly, the long armrest tube 222 and the diagonal support tube 230 when the folded state is in the unfolded state, ensuring the stability of connection and the overall mechanical strength of the frame body.

Specifically, the other ends of the long support pieces 242 of the two side wall assemblies are hinged to each other. When the frame body is in the unfolded state, the two supporting sheet assemblies are hinged with each other and form a triangle with the two long handrail tubes 222, so that the stability and the integral mechanical strength of the connection of the frame body are further improved. When folded, the two long support pieces 242 are close to each other, and the short support piece 241 and the long support piece 242 of the support piece assembly are close to each other and share an upper bend, so that the first enclosure wall 200 is finally folded.

In a preferred embodiment, a stop boss 243 is provided on an end of the short support piece 241 adjacent to the long support piece 242, and when the frame body is unfolded, the long support piece 242 is abutted against the stop boss 243 and the short support piece 241 and the long support piece 242 are aligned. When the folding trailer is unfolded, the long supporting piece 242 is abutted to the limiting boss 243, and meanwhile, the short supporting piece 241 and the long supporting piece 242 are in the same straight line, so that a triangle is formed between the two supporting piece assemblies and the two long handrail pipes 222, and a triangle is formed between the supporting piece assemblies and the long handrail pipes 222 and the inclined supporting pipe 230, so that the stability of connection is further ensured, the folding trailer is ensured to be locked when being unfolded, and the mechanical strength of the frame main body is improved.

Referring to fig. 5, the second enclosure wall 300 in this embodiment includes two side rail pipes 310 and two side support pipes 320 hinged to each other, wherein one end of one of the upright pipes 210 is hinged to one of the side rail pipes 310, the other end is hinged to one end of one of the side support pipes 320, the other end of the side support pipe 320 is hinged to the other side rail pipe 310, and the two side rail pipes 310 are aligned when the frame body is unfolded. The second enclosing wall 300 thus provided can achieve the mutual approaching of the two pillar tubes 210, and when folding, the two side support tubes 320 approach each other and the included angle becomes small, and at the same time, the side armrest tube 310 is folded upward, achieving the folding of the second enclosing wall 300.

Specifically, the side handrail tube 310 is connected with the side supporting tube 320 through the hinge piece 330, the hinge piece 330 is a plastic piece, the length of the side handrail tube 310 and the length of the side supporting tube 320 are shortened, the folded volume of the folding trailer is further reduced, the hinge of the side handrail tube 310 and the side supporting tube 320 can be conveniently realized, the hinge rotation is smooth, the production of the component is convenient, and the production cost can be reduced.

In a preferred embodiment, when the frame body is unfolded, the side rail tubes 310 have a predetermined distance therebetween. The side handrail tube 310 thus provided prevents the two side handrail tubes 310 from interfering with each other when folded and unfolded, and plays a role of avoiding.

When the folding trailer in this embodiment is folded, firstly, the middle seat 110 of the underframe assembly 100 is pulled upwards to unlock the frame main body, the bottom support tube 120 drives the four upright tubes 210 to approach towards the center, the long handrail tube 222 and the short handrail tube 221 of the first enclosing wall 200 are bent downwards, and the short support sheet 241 and the long support sheet 242 are bent upwards, so that the two inclined support tubes 230 are close to each other, and the folding of the first enclosing wall 200 is realized; at the same time, the hinge of the side rail tube 310 and the side support tube 320 is bent upward, and the two side support tubes 320 are close to each other, so that the second enclosing wall 300 is folded, thereby folding the frame body and the folding trailer, and the folded state in fig. 3 is achieved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Folding trailer, its characterized in that includes:

a frame body having an unfolded state and a folded state; the frame body comprises a frame structure consisting of a chassis assembly (100), two oppositely arranged first enclosing walls (200) and two oppositely arranged second enclosing walls (300); the first enclosing wall (200) comprises two groups of side wall components which are symmetrically arranged and mutually hinged, the side wall components comprise upright pipes (210), connecting rod components and inclined support pipes (230), the upright pipes (210), the connecting rod components and the inclined support pipes (230) are connected end to end and mutually hinged, the connecting rod components comprise a plurality of armrest pipes which are connected end to end in a hinged mode, and when the frame main body is unfolded, the armrest pipes of the two side wall components are all in the same straight line;

a plurality of wheel assemblies (400), wherein the wheel assemblies (400) are distributed at the bottom of the frame main body;

-a handle assembly (500), said handle assembly (500) being connected to any one of said second enclosing walls (300).

2. The folding trailer according to claim 1, wherein two handrail pipes are provided, one of which is a short handrail pipe (221) and the other is a long handrail pipe (222), one end of the short handrail pipe (221) is hinged to the upright pipe (210), the other end is hinged to one end of the long handrail pipe (222), and the other end of the long handrail pipe (222) is hinged to the inclined support pipe (230) through a support pipe joint (231); the support tube joints (231) of the two side wall assemblies are hinged to each other.

3. The folding trailer of claim 2, wherein the side wall assembly further comprises a support sheet assembly comprising a short support sheet (241) and a long support sheet (242), the short support sheet (241) being hinged at one end to the long handrail tube (222) and at the other end to one end of the long support sheet (242), the long support sheet (242) being hinged to the diagonal support tube (230).

4. A folding trailer according to claim 3, wherein the other ends of the long support pieces (242) of the two side wall assemblies are hinged to each other.

5. A folding trailer according to claim 3, wherein a limit boss (243) is provided on an end of the short support piece (241) adjacent to the long support piece (242), and when the frame body is unfolded, the long support piece (242) abuts against the limit boss (243) and the short support piece (241) and the long support piece (242) are in the same straight line.

6. The folding trailer according to claim 1, wherein the second enclosure wall (300) comprises two side rail pipes (310) and two side support pipes (320) hinged to each other, one end of one of the pillar pipes (210) is hinged to one of the side rail pipes (310), the other end is hinged to one end of one of the side support pipes (320), the other end of the side support pipe (320) is hinged to the other side rail pipe (310), and the two side rail pipes (310) are in the same line when the frame body is unfolded.

7. The folding trailer of claim 6, wherein when the frame body is unfolded, there is a predetermined distance between the two side rail tubes (310).

8. The folding trailer according to claim 6, wherein the handle assembly (500) comprises a traction rod (510), wherein two connecting rods (520) are hinged at the bottom end of the traction rod (510), and one ends of the two connecting rods (520) are hinged to the two upright tubes (210) in a one-to-one correspondence; the hinge joint of the two side support pipes (320) is provided with a fixing clamp, and the traction rod (510) can be accommodated in the fixing clamp.

9. The folding trailer according to claim 1, wherein the underframe assembly (100) comprises a middle seat (110) and 4 bottom support pipes (120), one end of each bottom support pipe (120) is hinged to the upright pipe (210) in a one-to-one correspondence manner, and the other end of each bottom support pipe (120) is hinged, detachably connected or limitedly connected with the middle seat (110).

10. The folding trailer according to claim 9, wherein the middle seat (110) is provided with 4 receiving grooves, and the side walls of the receiving grooves are provided with through holes, and when the frame body is unfolded, the through holes are used for inserting fixing pieces, so that one end of the bottom support tube (120) can be accommodated in a one-to-one correspondence manner and fixed in the receiving grooves.