CN223148457U - Improved structure of a folding trailer - Google Patents

Abstract

The improved structure of the folding trailer comprises four vertical rods, four side folding connecting rod groups and a bottom support folding connecting rod group, wherein the bottom support folding connecting rod group comprises two cross storage connecting rods which are arranged front and back, the left and right ends of the rear part of the front cross storage connecting rod are respectively hinged with the left and right ends of the front part of the rear cross storage connecting rod to form two bottom connecting points which are distributed left and right, the lower parts of middle cross rods of the left and right side folding connecting rod groups of the four side folding connecting rod groups are provided with V-shaped connecting rods, the upper two ends of each V-shaped connecting rod are respectively hinged with the front side and the rear side of the lower part of the middle cross rod on the same side, and the lower hinge point of each V-shaped connecting rod is hinged with the bottom connecting point on the same side. Through being provided with V type connecting rod, can carry out the connection support to the bottom tie point between two cross storage connecting rods to ensure folding frame's receipts and close and expand smooth and easy no resistance, improve the convenience that the trailer was used, promote user's use experience.

Description

Improved structure of folding trailer

Technical Field

The utility model relates to the technical field of trailers, in particular to an improved structure of 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. The trailer tool is widely applied when carrying things because of the characteristics of convenient pushing, time saving and labor saving. In order to facilitate the storage of the trailer tool, the trailer tool is designed into a foldable structure, so that the trailer tool is very light and convenient to carry, and can be placed on a vehicle after being folded.

A conventional trailer such as a bundle-type luggage van disclosed in Chinese patent publication No. CN103587562B has a bottom support structure consisting of four bottom beams and a middle bracket at the bottom thereof, and can be unfolded or folded by being matched with a front frame, a rear frame and side frames.

However, the conventional trailer has the defect of smaller volume, so that the portable folding trailer disclosed in the patent publication No. CN108725533B is provided with two groups of radiation mechanisms (corresponding to two bottom support structures) which can enlarge the volume of the trailer, but the plurality of groups of bottom support structures can cause the bearing of the trailer structure to be lowered, and the bottom support structures are easy to deform, and the novel campsite vehicle disclosed in the patent publication No. CN215752510U is provided with two groups of bottom support structures at the bottom, and in order to ensure that the bottom support structures are kept horizontal, support telescopic pipes are arranged at the middle parts of the left side and the right side of the bottom support structures and are connected with the left side and the right side folding connecting rod mechanisms so as to assist in supporting the bottom support structures. However, the hidden danger of unsmooth sliding exists in support expansion and contraction, the folding, folding and unfolding of the following trailer are easily affected, and the trailer is inconvenient to use.

Disclosure of utility model

The utility model aims to provide an improved structure of a folding trailer, which has the advantages of large capacity and convenient unfolding and folding.

In order to achieve the above object, the solution of the present utility model is:

The improved structure of the folding trailer comprises four vertical rods, four side folding connecting rod groups and a bottom support folding connecting rod group, wherein the front side, the rear side, the left side and the right side of the bottom support folding connecting rod group are respectively hinged to the lower parts of the four vertical rods, the four side folding connecting rod groups are distributed among the four vertical rods and enclose a frame, the lower ends of the side folding connecting rod groups are hinged to the lower parts of the adjacent vertical rods, and the upper ends of the side folding connecting rod groups are connected to the upper parts of the vertical rods in a sliding mode;

The bottom support folding connecting rod group comprises two cross storage connecting rods which are arranged front and back, and the left and right ends of the rear part of the front cross storage connecting rod are respectively hinged and matched with the left and right ends of the front part of the rear cross storage connecting rod to form two bottom connecting points which are distributed left and right;

The four side folding connecting rod components comprise a front folding connecting rod group, a rear folding connecting rod group, a left folding connecting rod group and a right folding connecting rod group;

the left folding connecting rod group and the right folding connecting rod group have the same structure and comprise three groups of cross rods which are sequentially hinged in front, middle and back, and the lower part of the middle cross rod is provided with a V-shaped connecting rod;

The upper two ends of the V-shaped connecting rod are hinged with the front side and the rear side of the lower part of the middle cross rod on the same side respectively, and the lower hinge point of the V-shaped connecting rod is hinged with the bottom connecting point on the same side.

Further, the two ends of the upper part of the V-shaped connecting rod are hinged with the lower part of the middle cross rod, the upper end of the extending rod on the front side of the V-shaped connecting rod is hinged with the rear side of the upper part of the front cross rod, and the upper end of the extending rod on the rear side of the V-shaped connecting rod is hinged with the front side of the upper part of the rear cross rod.

Further, the V-shaped connecting rod comprises a front side sub-rod and a rear side sub-rod, and the front side sub-rod and the rear side sub-rod are respectively distributed on the left side and the right side of the middle cross rod on the same side.

Further, the front folding connecting rod group and the rear folding connecting rod group have the same structure and comprise two groups of cross connecting rods, and the two groups of cross connecting rods are connected left and right and are symmetrically arranged.

Further, the bottom of each upright rod is respectively provided with a travelling wheel.

Further, the lower parts of the two upright posts at the front side are also hinged with a front bottom rod, and the middle part of the front bottom rod is hinged with a handle.

Further, a first hinging seat is arranged at the lower part of the vertical rod and used for hinging the front end or the rear end of the bottom support folding connecting rod group, the lower end of the side folding connecting rod group and the front bottom rod.

Further, the upper portion of pole setting is equipped with first slide, and the cover that first slide can reciprocate is located pole setting upper portion region, and first slide is used for articulating the upper end of each side folding link group.

Further, a connecting piece is arranged at the bottom connecting point, the front side and the rear side of the connecting piece are hinged with the end parts of the same side of the front cross storage connecting rod and the rear cross storage connecting rod, and the lower hinging point of the V-shaped connecting rod is hinged with the middle part of the connecting piece.

Further, the cross storage connecting rod comprises a middle hinging seat and four bottom sub-rods which are radially hinged below the middle hinging seat in a cross mode.

After adopting above-mentioned technical scheme, through being provided with two cross and accomodate the connecting rod and regard as the folding connecting rod group of bottom stay, can enlarge the volume, again through being provided with V type connecting rod, can accomodate the bottom tie point between the connecting rod to two crosses and carry out the connection support, prevent that two crosses from accomodating connecting rod middle parts atress and sagging deformation, and when folding frame is received or is expanded, this V type connecting rod is because the articulated cooperation of lower extreme, upper end and the articulated cooperation of middle part cross rod, can rotate with the folding connecting rod group of side and receive and close together, also can ensure folding frame's receipts and close and expand and all smooth and easy unimpeded, improve the convenience of trailer use, promote user's use experience.

Drawings

Fig. 1 is a perspective view of embodiment 1 of the present utility model;

FIG. 2 is a top view of embodiment 1 of the present utility model;

FIG. 3 is a right side view of embodiment 1 of the present utility model;

fig. 4 is a schematic view illustrating a folding state of embodiment 1 of the present utility model;

fig. 5 is a perspective view of embodiment 2 of the present utility model;

FIG. 6 is a right side view of embodiment 2 of the present utility model;

fig. 7 is a schematic view illustrating a folding state of embodiment 2 of the present utility model.

The reference numerals indicate the upright 1, the first hinge seat 11, the first slide seat 12, the side folding linkage 2, the front folding linkage 21, the rear folding linkage 22, the left folding linkage 23, the right folding linkage 24, the cross bar 25, the left cross bar 251, the right cross bar 252, the v-shaped linkage 26, the front bar 261, the rear bar 262, the extension bar 263, the lower hinge point 27, the cross bar 28, the bottom support folding linkage 3, the cross receiving linkage 31, the middle hinge seat 311, the bottom bar 312, the bottom connection point 32, the connecting piece 33 walking wheel 4, the front bottom bar 5, and the handle 6.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1 to 4, the improved structure of the folding trailer of the present embodiment includes four upright posts 1, four side folding link groups 2 and a bottom support folding link group 3, wherein the front and rear side left and right ends of the bottom support folding link group 3 are respectively hinged to the lower parts of the four upright posts 1. When the four vertical rods 1 of the folding frame are separated from or close to each other by arranging the side folding connecting rod groups 2 and the bottom support folding connecting rod groups 3, the connecting rod groups can be in linkage fit to realize the unfolding or folding of the folding frame so as to carry out the storage of objects or folding trailers.

In this embodiment, the four side folding link groups 2 are distributed between the four upright posts 1 and enclose a frame, the lower ends of the side folding link groups 2 are all hinged with the lower parts of the adjacent upright posts 1, and the upper ends of the side folding link groups are slidingly connected with the upper parts of the upright posts 1, and when the four upright posts 1 are mutually close, the upper ends of the side folding link groups 2 can slide on the upright posts 1.

In this embodiment, the bottom support folding link group 3 includes two cross storage links 31 disposed front and back, the left and right ends of the rear part of the front cross storage link 31 are respectively hinged to the left and right ends of the front part of the rear cross storage link 31 to form two bottom connection points 32 distributed left and right, and the two cross storage links 31 are disposed, so that the volume of the folding trailer can be effectively enlarged, and the volume of the loadable objects can be increased.

The four side folding linkage groups 2 are divided into a front folding linkage group 21, a rear folding linkage group 22, a left folding linkage group 23 and a right folding linkage group 24;

The left folding connecting rod group 23 and the right folding connecting rod group 24 have the same structure and comprise three groups of cross rods 25 which are sequentially hinged in front, middle and back, and the lower part of the middle cross rod 25 is provided with a V-shaped connecting rod 26;

The present embodiment is illustrated by taking the right folding linkage 24 as an example, and the middle cross bar 25 of the right folding linkage 24 includes a left cross bar 251 and a right cross bar 252, which are hinged at the middle.

The two ends of the upper part of the V-shaped connecting rod 26 are respectively hinged with the front and rear sides of the lower part of the middle cross rod 25 on the same side, namely respectively hinged with the lower part of the left cross rod 251 and the lower part of the right cross rod 252. While the lower hinge point 27 of the V-shaped link 26 is in hinged engagement with the ipsilateral bottom connection point 32.

Therefore, the volume can be enlarged by arranging the two cross storage connecting rods 31, the bottom connecting points 32 between the two cross storage connecting rods 31 can be connected and supported by arranging the V-shaped connecting rods 26, the middle parts of the two cross storage connecting rods 31 are prevented from being stressed and drooping and deforming, and when the folding frame is folded or unfolded, the upper ends of the V-shaped connecting rods 26 are hinged and matched with the middle cross rods due to the hinged and matched lower ends, and the folding frame can be folded along with the side folding connecting rod group 2 in a rotating way, namely, smooth folding and unfolding of the folding frame can be ensured, the convenience of using a trailer is improved, and the user experience is improved.

Specifically, the V-shaped link 26 includes a front side sub-rod 261 and a rear side sub-rod 262, and the front side sub-rod 261 and the rear side sub-rod 262 are respectively distributed on the left and right sides of the same-side middle cross bar 25. For example, the front side sub-lever 261 of the V-shaped link 26 on the right folding linkage 24 is located on the right side of the middle cross bar 25, and the rear side sub-lever 262 is located on the left side of the middle cross bar 25, so as to reduce the volume of the folded trailer after being folded, and further reduce the overall storage volume of the trailer.

In this embodiment, the bottom of each upright 1 is provided with a travelling wheel 4. To facilitate trailer travel. Simultaneously, the lower parts of the two upright posts 1 at the front side can be hinged with a front bottom rod 5, and the middle part of the front bottom rod 5 is hinged with a handle 6. As it is convenient to pull the trailer by the pull handle 6.

The lower part of the vertical rod 1 can be provided with a first hinging seat 11 for hinging the front end or the rear end of the bottom support folding connecting rod group 3, the lower end of the side folding connecting rod group 2 and the front bottom rod 5, the upper part of the vertical rod 1 is provided with a first sliding seat 12, the first sliding seat 12 can be sleeved on the upper region of the vertical rod 1 in a vertically sliding way, and the first sliding seat 12 is used for hinging the upper end of the side folding connecting rod group 2.

The bottom connecting point 32 can be provided with a connecting sheet 33, the front side and the rear side of the connecting sheet 33 are hinged with the end parts of the front side cross storage connecting rod 31 and the rear side cross storage connecting rod 31 on the same side, and the lower hinging point 27 of the V-shaped connecting rod 26 is hinged with the middle part of the connecting sheet 33.

In this embodiment, the cross receiving link 31 includes a middle hinge seat 311 and four bottom sub-rods 312 radially hinged under the middle hinge seat 311.

In this embodiment, the front folding link set 21 and the rear folding link set 22 have the same structure, and each includes two sets of cross links 28, where the two sets of cross links 28 are connected left and right and symmetrically arranged.

Example 2

As shown in fig. 5 to 7, the structure of the present embodiment is substantially the same as that of the above-described embodiment, with the main difference that the upper ends of the V-shaped link 26 of the present embodiment are further extended upward to form an extension rod 263 at the end hinged to the lower portion of the middle cross bar 25.

The upper end of the extension rod 263 at the front side of the V-shaped link 26 is hinged to the upper rear side of the front cross bar 25, and the upper end of the extension rod 263 at the rear side of the V-shaped link 26 is hinged to the upper front side of the rear cross bar 25. With this, the supporting effect of the V-shaped link 26 on the bottom stay folding link set 3 can be further improved.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that equivalent changes and modifications can be made by those skilled in the art without departing from the principles of the present utility model, which still falls within the scope of the present utility model.

In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the application product is used, or the orientation or positional relationship conventionally understood by those skilled in the art is merely for convenience of describing the present application and simplifying the description, and is not indicative or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" and "a number" means two or more, unless specifically defined otherwise.

In describing embodiments of the present application, it should also be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through intermediaries, or in communication with each other between two elements, or in interaction with each other. The specific meaning of the above terms in the present application 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.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Claims (10)

1. The utility model provides an improvement structure of folding trailer, its folding frame includes four pole setting, four folding connecting rod groups of side and the folding connecting rod group of bottom suspension, the front and back side left and right sides of the folding connecting rod group of bottom suspension articulates in the lower part of four pole setting respectively, its characterized in that:

The four side folding connecting rod groups are distributed among the four upright rods and are enclosed into a frame, the lower ends of the side folding connecting rod groups are hinged with the lower parts of the adjacent upright rods, and the upper ends of the side folding connecting rod groups are connected with the upper parts of the upright rods in a sliding way;

The bottom support folding connecting rod group comprises two cross storage connecting rods which are arranged front and back, and the left and right ends of the rear part of the front cross storage connecting rod are respectively hinged and matched with the left and right ends of the front part of the rear cross storage connecting rod to form two bottom connecting points which are distributed left and right;

The four side folding connecting rod components comprise a front folding connecting rod group, a rear folding connecting rod group, a left folding connecting rod group and a right folding connecting rod group;

the left folding connecting rod group and the right folding connecting rod group have the same structure and comprise three groups of cross rods which are sequentially hinged in front, middle and back, and the lower part of the middle cross rod is provided with a V-shaped connecting rod;

The upper two ends of the V-shaped connecting rod are hinged with the front side and the rear side of the lower part of the middle cross rod on the same side respectively, and the lower hinge point of the V-shaped connecting rod is hinged with the bottom connecting point on the same side.

2. The improvement of a folding trailer according to claim 1, wherein the ends of the upper part of the V-shaped connecting rod hinged with the lower part of the middle cross rod are further extended upwards to form an extension rod, the upper end of the extension rod on the front side of the V-shaped connecting rod is hinged with the upper rear side of the front cross rod, and the upper end of the extension rod on the rear side of the V-shaped connecting rod is hinged with the upper front side of the rear cross rod.

3. The improvement of a folding trailer according to claim 1 or 2, wherein the V-shaped connecting rod comprises a front side sub-rod and a rear side sub-rod, and the front side sub-rod and the rear side sub-rod are respectively distributed on the left side and the right side of the same-side middle cross rod.

4. The improved structure of the folding trailer as claimed in claim 1, wherein the front folding connecting rod group and the rear folding connecting rod group have the same structure and comprise two groups of cross connecting rods which are connected left and right and are symmetrically arranged.

5. The improved structure of the folding trailer as claimed in claim 1, wherein the bottom of each upright is provided with a travelling wheel respectively.

6. The improved structure of the folding trailer according to claim 1, wherein the lower parts of the two upright posts at the front side are also hinged with a front bottom rod, and the middle part of the front bottom rod is hinged with a handle.

7. The improvement as set forth in claim 6 wherein said lower portion of said upright has a first hinge for hinging a front or rear end of a bottom stay folding linkage, a lower end of a side folding linkage and said front bottom stay.

8. The improved structure of the folding trailer according to claim 1 or 2, wherein a first sliding seat is arranged at the upper part of the vertical rod, the first sliding seat is sleeved at the upper region of the vertical rod in a vertically sliding manner, and the first sliding seat is used for hinging the upper ends of the folding connecting rod groups at the side faces.

9. The improvement of a folding trailer according to claim 1 or 2, wherein the cross receiving link comprises a middle hinge seat and four bottom sub-rods radially hinged below the middle hinge seat.

10. The improved structure of the folding trailer according to claim 1 or 2, wherein a connecting sheet is arranged at the bottom connecting point, the front side and the rear side of the connecting sheet are hinged with the end parts of the same side of the front cross storage connecting rod and the rear cross storage connecting rod, and the lower hinging point of the V-shaped connecting rod is hinged with the middle part of the connecting sheet.