CN218594389U - Folding handcart - Google Patents

Abstract

The utility model relates to a folding handcart, which comprises a foldable handcart body frame and a storage bag; the two sides of the frame of the vehicle body are formed by hinging two groups of first diagonal rods and second diagonal rods which are crossed in the middle, the first diagonal rods in the corresponding groups at the two sides are formed by bending a rod piece, and the bent bottom rod sections face the front end and the rear end and are used for supporting and tightening the bottom of the storage bag; the front vertical surface, the rear vertical surface and the middle part of the vehicle body frame are hinged in a related mode through three U-shaped stand columns and support the upper edge of the storage bag, and a foldable and expandable whole is formed.

Description

Folding handcart

The technical field is as follows:

the utility model belongs to the field is equipped to the transportation dress, in particular to folding handcart especially can fold into planar scheme from beginning to end.

Background art:

there are many solutions for existing folding carts, which are broadly classified into two categories, planar folding and fully folding. In the plane folding scheme, the left side and the right side are supported by telescopic structures, and the front vertical surface and the rear vertical surface of the vehicle body can be folded, closed and unfolded. Such as:

CN2014800420171, discloses a foldable wagon having a collapsible frame positionable in an open position and a collapsed position, a plurality of wheels coupled to the collapsible frame, a plurality of substantially rigid seats pivotably coupled to the collapsible frame, and a flexible housing forming sidewalls for the wagon around the collapsible frame. Each substantially rigid seat has a substantially rigid seat back and a substantially rigid seat bottom hingedly coupled to the seat back. The support at the two sides of the folding frame is composed of two quadrangular rod pieces which are hinged and can be lifted and folded along the middle vertical surface.

And cn201922213235.X, which discloses a foldable handcart convenient to use, comprising a frame main body, wheel assemblies and a handle assembly, wherein the left side and the right side of the frame main body are respectively provided with a telescopic structure capable of stretching back and forth, so that the frame main body can be folded back and forth or unfolded. The front and rear telescopic structure is actually two crossed inclined rod sets, and the upper end and the lower end of each inclined rod set are hinged with the front vertical surface and the rear vertical surface to form a front vertical surface and rear vertical surface telescopic structure.

The second type of full folding is two-dimensional folding, can be folded into bundles, can be folded, folded and unfolded to operate front and back, left and right vertical surfaces, is also called three-dimensional folding, and is easier to store compared with the former type. Such as:

CN202121411194.6 discloses a folding handcart, which comprises a foldable handcart body frame, a storage bag, wheels and a push-pull rod assembly; the front, back, left and right vertical surfaces of the vehicle body frame comprise more than one group of inclined rods which are hinged in a crossed manner, the upper end parts of the inclined rods of the adjacent vertical surfaces are hinged with each other, the lower end parts of the inclined rods of the adjacent vertical surfaces are hinged on a hinge seat, and wheels are arranged on the hinge seat; wherein: the bottom plane of the vehicle body frame is supported by two folding rod groups distributed left and right, each folding rod group comprises a front rod piece, a rear rod piece and a bridging piece, the bridging pieces are connected with one end parts of the front rod pieces and the rear rod pieces, and the other end parts of the front rod pieces and the rear rod pieces are correspondingly hinged on hinge seats of the front vertical surface and the rear vertical surface; the hinged seat is correspondingly formed with a horizontal groove, the vehicle body frame is opened in place, the front rod piece and the rear rod piece are partially lapped in the horizontal groove and supported by the top, and meanwhile, the hinged seat is also formed to be guide. The technical scheme has the characteristics of unique conception, simple structure and smooth operation.

In the two-dimensional folding scheme, the four vertical surfaces are all foldable structures, torsion is easy to generate after the folding structure is opened, and the rigidity strength is relatively weak; and the crossed diagonal rods can slightly deform downwards at the four corners when the storage bag bears the load. How to overcome the deficiency of the prior art, the utility model becomes the object of research.

The invention content is as follows:

the utility model aims at designing a left and right sides facade comprises criss-cross down tube, and the front and back both ends facade is correlated by the U-shaped stand, and the folding handcart that is more smooth is folded in the translation.

The utility model discloses technical scheme realizes like this:

a folding handcart comprises a foldable handcart body frame and a storage bag sleeved on the handcart body frame; the vehicle body frame has four facades of front and back both ends and left and right sides, its characterized in that: the left side vertical surface and the right side vertical surface comprise two groups of first inclined rods and second inclined rods which are hinged in a crossed mode in the middle, the lower end parts of the first inclined rods of the adjacent groups are hinged with each other, and the upper end parts of the second inclined rods are hinged with a sliding sleeve; the first diagonal rods of the corresponding groups of the vertical surfaces at the two sides are formed by bending a rod piece, and the bent bottom rod sections face the front end and the rear end and are used for supporting and tightening the bottom of the storage bag; further comprising:

three U-shaped upright posts which are respectively arranged at the two ends and the middle part and are related to the vertical surfaces at the left side and the right side; the U-shaped upright post is provided with two upright post sections and a U-shaped bottom section;

the sliding sleeve and the first hinge pieces keep the U-shaped upright at the middle part in an upright and associated state, and the end part of the upright section supports the middle edge of the storage bag;

the upright column sections of the U-shaped upright columns at the front end and the rear end provide the relevant hinge joint of the first inclined rod and the second inclined rod at the two sides and the position for mounting the wheel, wherein the U-shaped upright column at the front end also provides the mounting position of the push-pull rod.

The associative hinge means that: the end parts of the second inclined rods in the two groups of inclined rods are correspondingly hinged to the lower parts of the upright sections of the U-shaped uprights at the two ends, the middle parts of the upright sections are hinged with second hinge pieces, the other ends of the second hinge pieces are correspondingly hinged to the first inclined rods at the same side, the upright and associated states of the U-shaped uprights at the two ends are kept, and the two groups of inclined rods are allowed to fold and unfold.

The U-shaped bottom sections of the U-shaped upright posts at the front end and the rear end have the following combined orientation: 1. the two U-shaped bottom sections are positioned at the lower side of the bottom of the storage bag, the front wheel and the rear wheel are directly arranged on the two U-shaped bottom sections, and the end parts of the upright post sections support the four corners of the storage bag; 2. the two U bottom sections are upward and support the edges of the front end and the rear end of the storage bag, and the wheels are directly sleeved and fixed on the downward end parts of the four upright post sections; 3. the U bottom section at the front end faces upwards and supports the edge of the front end of the storage bag, and the downward end parts of the two upright column sections are directly sleeved and fixedly provided with the upper wheels; the U bottom section at the rear end faces downwards, the wheels are directly installed on the U bottom section, and the end parts of the two upright column sections support two corners at the rear end of the storage bag.

A U-shaped door rod can be hinged between two upward upright post sections of the rear end vertical face U-shaped upright post in a swinging manner; the vertical surface of the rear end of the storage bag is sewn into a movable tongue piece which can be opened backwards, the movable tongue piece is fixedly sleeved on the U-shaped door rod and can perform opening and closing actions along with the U-shaped door rod, and the movable tongue piece is locked in place by means of a woven belt arranged on the outer side of the storage bag.

The end part of the mesh belt is provided with a matched insert buckle which is locked by the insert buckle.

The push-pull rod is a bent U-shaped push-pull rod, two ends of the push-pull rod can be directly hinged to the middle upper parts of the two upright post sections of the front U-shaped upright post in a swinging mode, and the push-pull rod is kept in an upwarping state by means of a righting belt sewn to the upper part of the front vertical surface of the storage bag.

The first diagonal rod of the two groups of diagonal rods is downwards folded from the cross hinge point to one end of the middle part, and the downward folding angle is between 10 and 15 degrees; the second diagonal rod is folded upwards from the cross hinge point towards one end of the end part, and the folded angle is between 10 and 15 degrees; during the opening process, the first inclined rod can cross the second hinge plate to form an interference state towards one end of the end part and is kept to abut against the second inclined rod.

The two upright post sections of the middle U-shaped upright post correspond to the horizontal positions of the two first inclined rod bottom rod sections, a hook is arranged, a tensioning rope is arranged between the hook and the edge of the bottom of the storage bag, or two ends of a reinforcing woven belt transversely sewn in the middle of the storage bag are tied and fixed on the hook.

The lower end parts of the first inclined rods of the adjacent groups are hinged by virtue of a plastic part, and the plastic parts are mutually interpenetrated and avoided, so that the first inclined rods in the two groups can be positioned in a plane; the second inclined rods are respectively hinged on the sliding sleeves and are positioned in the same plane.

The utility model has the characteristics of unique conception, ingenious structure, smooth operation and small volume occupied by folding; particularly, the front part, the rear part and the middle part form the association of two sides through the U-shaped upright posts, the rigidity is guaranteed, and a reliable foundation is provided for the positioning of the wheels; in the folding and unfolding processes, the U-shaped upright posts at the front end and the rear end can act along with the cross hinged inclined rods, the front wheel and the rear wheel can move horizontally and roll and are folded without resistance, the whole support is still formed, the unfolding and folding operations are smooth and barrier-free, and the plane after folding is neat and conformable.

Description of the drawings:

the present invention will be further explained with reference to the following specific drawings:

FIG. 1 is a rear end open position of a folding cart

FIG. 2 is a rear end closed position of the foldable wagon

FIG. 3 is an enlarged view of part A of FIG. 2

FIG. 4 is a schematic view showing an opened state of a vehicle body frame

FIG. 5 is an enlarged view of a portion B of FIG. 4

FIG. 6 is a side view schematically showing the opened state of the body frame

FIG. 7 is a schematic view showing a folded state of a vehicle body frame

FIG. 8 is a side view schematically showing a folded state of the vehicle body frame

FIG. 9 is a schematic view of the body frame in two open states

FIG. 10 is a side view of the frame of the vehicle body in two open states

Wherein

100-vehicle body frame

1-first diagonal rod 11-bottom rod section 12-plastic part

2-second diagonal

3-sliding sleeve

4-U-shaped upright 41-upright section 42-U bottom section 43-hook

44-support T-shaped head

5-first hinge plate

6-second hinge plate

7-U-shaped door rod

8-wheel 9-push-pull rod 91-centralizing belt

200-storage bag 201-movable tongue piece 202-woven belt 203-eye-splice

204-tensioning rope

X-lower break angle Y-upper break angle

The specific implementation mode is as follows:

referring to fig. 1 to 8, the foldable cart includes a foldable cart body frame 100 and a storage bag 200 fitted over the cart body frame; the car body frame 100 has four vertical surfaces of a front end, a rear end, a left side and a right side, the vertical surfaces of the left side and the right side comprise two groups of first inclined rods 1 and second inclined rods 2 with the middle parts thereof being hinged in a crossed manner, the lower end parts of the first inclined rods 1 of the adjacent groups are hinged with each other, and the upper end parts of the second inclined rods 2 are hinged with a sliding sleeve 3, so that the connection between the two groups of inclined rods at the same side is formed, and the two groups of inclined rods can be linked and unfolded around respective hinged points to move. In the figure, the lower end parts of the first diagonal rods 1 of the adjacent groups are hinged by virtue of a plastic part 12, and the plastic parts 12 are mutually penetrated and avoided, so that the first diagonal rods 1 in the two groups can be positioned in a plane; the second inclined rods 2 are respectively hinged on the sliding sleeve 3 and are in the same plane.

The first inclined rods 1 of the corresponding groups of the two side vertical surfaces are formed by bending a rod piece, the bent bottom rod sections 11 are arranged at the front end and the rear end, and are used for supporting and tightening the bottom of the storage bag 200 by means of the bottom rod sections 11, namely, the two ends of the storage bag 200 can be tightened after being opened, so that the support capable of placing articles is formed, and meanwhile, the rigid association between the two side vertical surfaces is realized; further comprising:

the three U-shaped pillars 4 are separated at both ends and the middle position, and are associated with the left and right side vertical surfaces, that is, the association between both ends of the diagonal rods at both sides is formed, so that the overall rigidity of the vehicle body frame 100 is improved. The U-shaped upright 4 has two upright sections 41 and a U-shaped bottom section 42. The bending of one rod piece is most reasonable, but the equivalent scheme that the split rod pieces are hinged into a U-shaped frame through plastic pieces is not excluded.

A U-shaped upright post 4 positioned in the middle part, wherein a U bottom section 42 of the U-shaped upright post is positioned at the lower side of the bottom of the storage bag 200, the upper part of an upright post section 41 correspondingly penetrates through the sliding sleeve 3 at the same side, the lower part of the upright post section is hinged with two first hinge pieces 5, the other ends of the two first hinge pieces 5 are correspondingly hinged on first inclined rods 1 in two groups of inclined rods, the upright and relevant state of the U-shaped upright post 4 in the middle part is kept by the sliding sleeve 3 and the first hinge pieces 5, and the middle edge of the storage bag 200 is supported by the end part of the upright post section 41; that is, with the help of the middle U-shaped upright 4, the connection of the hinged ends of the two groups of diagonal rods is formed, and the upright sections 41 are righted, and the upright sections 41 can be used for supporting the middle part of the storage bag 200, so as to avoid the middle part from drooping. To this end, a support T-head 44 is fastened to the top of the column section 41 to increase the support area.

The U-shaped upright 4 at the front end and the rear end has upright sections 41 for providing the joint hinge of the first diagonal rod 1 and the second diagonal rod 2 at the two sides and the position for installing the wheel 8, wherein the U-shaped upright 4 at the front end also provides the position for installing the push-pull rod 9.

More specifically, associative articulation means: the end parts of the second inclined rods 2 in the two groups of inclined rods are correspondingly hinged to the lower parts of the upright sections 41 of the U-shaped uprights at the two ends, the middle parts of the upright sections 41 are hinged with second hinge pieces 6, and the other ends of the second hinge pieces 6 are correspondingly hinged to the first inclined rods 1 at the same side, so that the end parts of the first inclined rods 1 can be suspended and can be used for supporting the end parts of the storage bag, the second hinge pieces 6 keep the upright and associated states of the U-shaped uprights 4 at the two ends, and the two groups of inclined rods are allowed to fold and unfold.

The U-shaped bottom sections 42 of the U-shaped uprights at the front and rear ends have the following combined orientation:

1. the two U bottom sections 42 are downward, namely are positioned at the lower side of the bottom of the storage bag 200, the front wheel 8 and the rear wheel 8 are directly arranged on the two U bottom sections 42, and the end part of the upright column section 41 supports the four corners of the storage bag 200; the structure is convenient for the installation of the wheels 8, can be four wheels or designed into three wheels, has relatively flexible space among the wheels 8, has the defects that the edge of the upper part of the storage bag forms a six-point supporting situation, lacks the edge which can be relied on, and can be pushed and pulled only by the push-pull rod 9. The equivalent illustration can refer to the rear end elevation of fig. 4. In order to tension the upper edge of the bag 200, a superimposed U-shaped bar member with an upward U-shaped bottom section may be riveted to the front and rear upright sections 41, or a cross bar may be directly riveted to the ends of the two upright sections 41 to form a closed rigid body.

2. Referring to fig. 9 and 10, the two U bottom sections 42 are upward and support the edges of the front and rear ends of the storage bag 200, and the wheels 8 are directly sleeved and fixed on the downward ends of the four upright sections 41; the installation positions of the four wheels 8 are relatively fixed, the upper edges of the two ends of the storage bag 200 are supported, the edges are rigidly depended, and the storage bag can be directly pushed by hand or pulled by hand under the condition that a push-pull rod 9 is not needed, so that great convenience is provided. And the bottom of the vehicle body frame is also provided with a bottom rod section 11 of a first inclined rod to form a connection.

3. As shown in fig. 1 to 8, the U-bottom section 42 at the front end faces upward and supports the front edge of the storage bag 200, and the two upright column sections 41 directly fit and fix the upper wheel 8 at the downward end; the U-bottom section 42 at the rear end faces downward, the wheels 8 are directly mounted on the U-bottom section 42, and the two upright sections 41 support the two corners at the rear end of the storage bag 200.

On the basis of the first combination scheme and the third combination scheme, a U-shaped door rod 7 can be hinged between two upward upright column sections 41 of the rear end vertical face U-shaped upright column in a swinging manner; the rear end vertical surface of the storage bag 200 is sewn into a movable tongue piece 201 which can be opened backwards, the movable tongue piece 201 is fixedly sleeved on the U-shaped door rod 7 and can be opened and closed along with the U-shaped door rod 7, and the movable tongue piece 201 is locked in place by means of a woven belt 202 arranged outside the storage bag 200. More specifically, the end of the webbing 202 is provided with a mating buckle 203, locking is performed by means of the buckle 203, and quick locking and unlocking operations can be achieved. After unfastening, the U-shaped door rod 7 swings backwards to the designed inclined state, and is pulled by the cloth at the side of the storage bag 200 and maintains the inclined state, so that the rear end of the storage bag 200 can be opened to place articles longer than the vehicle body frame 100, as shown in fig. 1 and 2. And the hinge point of the U-shaped door rod 7 and the upright post section 41 can be selected to be the same hinge point with the second inclined rod 2, so that the assembly process is saved.

Furthermore, the push-pull rod 9 also adopts a bent U-shaped push-pull rod, two ends of the push-pull rod are directly hinged to the middle upper parts of two upright post sections 41 of the front U-shaped upright post in a swinging mode, and the push-pull rod is kept in an upwarping state and is in an optimal push-pull operation angle by means of a righting belt 91 sewn on the upper part of the front upright surface of the storage bag; the end part of the righting belt 91 is movably sleeved on the push-pull rod 9 through a ring sleeve, the ring sleeve is moved away to enable the push-pull rod 9 to lose traction, and the push-pull rod 9 naturally droops to the side of the U-shaped upright post 4, so that the folding purpose is achieved. The push-pull rod 9 can also be of conventional design, such as a single rod.

As shown in fig. 6, in order to realize the sinking of the bottom of the bag 200, to form a larger accommodating space, and to obtain better support of the U-shaped posts 4 at the front and rear ends, the first diagonal member 1 and the second diagonal member 2 are bent appropriately, specifically: the first diagonal rod 1 in the two groups of diagonal rods is downwards folded from the cross hinge point to one end of the middle part, and the downward folding angle X is between 10 and 15 degrees; the second diagonal rod 2 is folded upwards from the cross hinge point towards one end of the end part, and the upward folding angle Y is between 10 and 15 degrees; during the opening process, the first inclined rod 1 can stride over the second hinge plate 6 towards one end of the end part to form an interference state, and maintains to be attached to the second inclined rod 2 to bear force, and the end part of the second inclined rod 2 is transferred to the U-shaped upright post 4, so that the load capacity of the storage bag is improved.

As shown in fig. 2, the two upright sections 41 of the middle U-shaped upright, corresponding to the horizontal positions of the two first diagonal rod bottom rod sections 11 or the upper positions thereof, are further provided with hooks 43, and tensioning ropes 204, such as elastic ropes, are arranged between the hooks 43 and the bottom edge of the storage bag 200; or the middle part of the storage bag 200 is transversely sewed with a reinforced braid, and two ends of the reinforced braid are fastened on the hook, so that the middle part of the storage bag 200 is in a tight state and can be effectively supported, and the deformation is reduced, as shown in fig. 2 and 3.

Claims (9)

1. A folding handcart comprises a foldable handcart body frame (100) and a storage bag (200) sleeved on the handcart body frame; the vehicle body frame (100) has four facades of front and rear ends and left and right sides, and is characterized in that: the vertical surfaces at the left side and the right side comprise two groups of first diagonal rods (1) and second diagonal rods (2) with the middle parts thereof being hinged in a crossed manner, the lower end parts of the first diagonal rods (1) of the adjacent groups are hinged with each other, and the upper end parts of the second diagonal rods (2) are hinged with a sliding sleeve (3); the first diagonal rods (1) of the corresponding groups of the vertical surfaces at the two sides are formed by bending a rod piece, and the bent bottom rod sections (11) are used for supporting and tightening the bottom of the storage bag (200) by means of the bottom rod sections (11) towards the front end and the rear end; further comprising:

three U-shaped upright posts (4) which are respectively arranged at the two ends and the middle part and are related to the vertical surfaces of the left side and the right side; the U-shaped upright (4) is provided with two upright sections (41) and a U-shaped bottom section (42);

the upper part of the upright column section (41) correspondingly penetrates through the sliding sleeve (3) at the same side, the lower part of the upright column section (41) is hinged with two first hinge pieces (5), the other ends of the two first hinge pieces (5) are correspondingly hinged on first inclined rods (1) in the two groups of inclined rods, the sliding sleeve (3) and the first hinge pieces (5) keep the upright and associated state of the middle U-shaped upright column (4), and the end part of the upright column section (41) supports the middle edge of the storage bag (200);

the upright post sections (41) of the U-shaped upright posts at the front end and the rear end provide the relevant hinge joint of the first inclined rod (1) and the second inclined rod (2) at the two sides and the position for installing the wheel (8), wherein the U-shaped upright post (4) at the front end also provides the position for installing the push-pull rod (9).

2. A folding trolley according to claim 1, characterized in that: the associative hinge means that: the end part of a second diagonal rod (2) in the two groups of diagonal rods is correspondingly hinged to the lower part of an upright section (41) of the U-shaped upright columns at the two ends, the middle part of the upright section (41) is hinged with a second hinge piece (6), the other end of the second hinge piece (6) is correspondingly hinged to the first diagonal rod (1) at the same side, the upright and associated states of the U-shaped upright columns (4) at the two ends are kept, and the folding and unfolding actions of the two groups of diagonal rods are allowed.

3. A folding trolley according to claim 1 or 2, characterized in that: the U-shaped bottom section (42) of the U-shaped upright at the front end and the rear end has the following combined orientation:

1. the two U-shaped bottom sections (42) are positioned at the lower side of the bottom of the storage bag (200), the front wheel and the rear wheel (8) are directly arranged on the two U-shaped bottom sections (42), and the end parts of the upright column sections (41) support the four corners of the storage bag (200);

2. the two U bottom sections (42) are upward and support the edges of the front end and the rear end of the storage bag (200), and the wheels (8) are directly sleeved and fixed on the downward end parts of the four upright column sections (41);

3. the U bottom section (42) at the front end faces upwards and supports the front end edge of the storage bag (200), and the downward end parts of the two upright column sections (41) are directly sleeved and fixedly provided with the upper wheels (8); the U-shaped bottom section (42) at the rear end faces downwards, the wheels (8) are directly installed on the U-shaped bottom section (42), and the end parts of the two upright column sections (41) support two corners at the rear end of the storage bag (200).

4. A folding cart according to claim 3, wherein: a U-shaped door rod (7) can be hinged between two upward upright post sections (41) of the U-shaped upright post of the rear end elevation in a swinging way; the rear end vertical face of the storage bag (200) is sewn into a movable tongue piece (201) capable of being opened backwards, the movable tongue piece (201) is fixedly sleeved on the U-shaped door rod (7) and can perform opening and closing actions along with the U-shaped door rod (7), and the movable tongue piece (201) is locked in place by means of a woven belt (202) arranged on the outer side of the storage bag.

5. A folding trolley according to claim 4, further comprising: the end part of the mesh belt (202) is provided with a matched insert buckle (203) which is locked by the insert buckle (203).

6. A folding trolley according to claim 1 or 2, characterized in that: the push-pull rod (9) is a bent U-shaped push-pull rod (9), two ends of the push-pull rod are directly hinged to the middle upper parts of two upright post sections (41) of the front U-shaped upright post in a swinging mode, and the push-pull rod keeps an upwarping state by means of a righting belt (91) sewn to the upper part of the front upright surface of the storage bag.

7. A folding trolley according to claim 1 or 2, characterized in that: the first diagonal rod (1) in the two groups of diagonal rods is downwards folded from the cross hinge point to one end of the middle part, and the downward folding angle is between 10 and 15 degrees; the second diagonal rod (2) is folded upwards from the cross hinge point towards one end of the end part, and the folded angle is between 10 and 15 degrees; during the opening process, the first diagonal rod (1) can cross over the second hinge plate (6) to form an interference state towards one end of the end part and is kept to be abutted against the second diagonal rod (2).

8. A folding trolley according to claim 1 or 2, characterized in that: two upright post sections (41) of the middle U-shaped upright post correspond to the horizontal positions of the two first inclined rod bottom rod sections (11), a hook (43) is arranged, a tensioning rope (204) is arranged between the hook (43) and the bottom edge of the storage bag (200), or two ends of a reinforcing woven belt transversely sewn in the middle of the storage bag (200) are tied and fixed on the hook (43).

9. A folding cart according to claim 7, wherein: the lower end parts of the first inclined rods (1) of the adjacent groups are hinged by virtue of plastic parts (12), and the plastic parts (12) are mutually interpenetrated and avoided, so that the first inclined rods (1) in the two groups can be positioned in a plane; the second inclined rods (2) are respectively hinged on the sliding sleeve (3) and are positioned in the same plane.

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