CN220662607U - Folding skeleton - Google Patents

Abstract

The utility model discloses a folding framework, which comprises: the front support rod, the rear support rod and the upper connecting rod are connected to the corresponding joint assemblies, and the three can relatively rotate through the joint assemblies; a front cross assembly is rotationally connected between the two front support rods and the two rear support rods, connecting rods are rotationally connected between the front support rods and the rear support rods which are positioned on the same side, and a rear cross assembly is rotationally connected between the two connecting rods and the two rear support rods; when the two upper connecting rods are pushed to turn forwards to fold, the upper connecting rods can be linked with the front supporting rods and the rear supporting rods through the joint assemblies to rotate, and the front cross assemblies and the rear cross assemblies are driven to fold towards the middle along the width direction. The folding framework has small volume after being folded, convenient use and wide application range.

Description

Folding skeleton

Technical Field

The utility model relates to the technical field of folding articles for daily use, in particular to a folding framework.

Background

At present, many articles for daily use all have collapsible function, for example collapsible children's shallow, pet shallow, old man's booster cycle, leisure chaise longue, children's dining chair etc. have made things convenient for people to accomodate and carry to a certain extent.

The existing foldable products are limited by the self-folding skeleton structure, so that the folded products are still large in size. For example, an umbrella cart convenient to fold is disclosed in chinese patent application No. 202120349092. X and publication day 2021.11.09, and includes a first pushing handle and a second pushing handle, wherein the first pushing handle and the second pushing handle are respectively connected with a first back support rod and a second back support rod in a rotating manner, the first back support rod and the second back support rod are both connected with sliding blocks in a sliding manner, the two groups of sliding blocks are both connected with connecting pieces in a rotating manner, the two groups of connecting pieces are respectively connected with a first bottom support rod and a second bottom support rod in a rotating manner, the first bottom support rod and the second bottom support rod are distributed in a crossing manner, the bottom ends of the first bottom support rod and the second bottom support rod are respectively connected with the first pushing handle and the second pushing handle in a rotating manner, and a sitting rod is respectively connected between the two groups of connecting pieces and the first pushing handle and the second pushing handle in a rotating manner. Although it can fold first back cradling piece and second back cradling piece to one side of first pushing away the handle and second pushing away the handle when folding, will push away the handle with the second simultaneously and vertically draw in, but its length of folding back first pushing away the handle/second pushing away the handle does not change, leads to whole length still longer, and is bulky. Accordingly, there is a need for improvements in the art that overcome the shortcomings of the prior art.

Disclosure of Invention

The utility model aims to solve the problem of providing a folding framework which overcomes the defect that the volume of a folded product is still large due to the fact that the existing foldable product is limited by a self-folding framework structure.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a folding framework comprising: the front support rod, the rear support rod and the upper connecting rod are connected to the corresponding joint assemblies, and the three parts can relatively rotate through the joint assemblies; a front cross assembly is rotationally connected between the two front support rods and the two rear support rods, connecting rods are rotationally connected between the front support rods and the rear support rods which are positioned on the same side, and a rear cross assembly is rotationally connected between the two connecting rods and the two rear support rods; when the two upper connecting rods are pushed to turn forward to fold, the upper connecting rods can be linked with the front supporting rods and the rear supporting rods through the joint assemblies to rotate relatively, and the front crossing assemblies and the rear crossing assemblies are driven to fold towards the middle along the width direction.

As a further improvement of the utility model, the front cross assembly comprises a first front fork rod and a second front fork rod which is in cross distribution with the first front fork rod, and the middle part of the first front fork rod is hinged with the middle part of the second front fork rod; the two ends of the first front fork rod are respectively hinged to one front supporting rod and one rear supporting rod which are positioned on different sides, and the two ends of the second front fork rod are respectively hinged to the other front supporting rod and the other rear supporting rod which are positioned on different sides.

As a further improvement of the present utility model, one end of the connecting rod is hinged to the middle of the front support rod, the middle of the connecting rod is hinged to the middle of the rear support rod, and the other end of the connecting rod extends backward for being hinged to the rear cross assembly.

As a further improvement of the utility model, the rear cross assembly comprises a first rear fork rod and a second rear fork rod which is in cross distribution with the first rear fork rod, and the middle part of the first rear fork rod is hinged with the middle part of the second rear fork rod; the two ends of the first rear fork rod are respectively hinged to one rear supporting rod and one connecting rod which are positioned on different sides, and the two ends of the second rear fork rod are respectively hinged to the other rear supporting rod and the other connecting rod which are positioned on different sides.

As a further improvement of the utility model, the joint assembly comprises a joint body, a front support joint and a rear support joint which are both hinged with the joint body, wherein the upper end of the front support rod is fixedly connected with the front support joint, the upper end of the rear support rod is fixedly connected with the rear support joint, and the lower end of the upper connecting rod is fixedly connected with the joint body; when the upper connecting rod is folded, the front support connector and the rear support connector can rotate relative to each other in the process that the connector body moves along with the upper connecting rod.

As a further improvement of the utility model, the front side of the joint body is provided with a first accommodating groove, the front support joint is movably arranged in the first accommodating groove, and the upper end of the front support joint is hinged with the upper end of the joint body; the rear side of the joint body is provided with a second storage groove positioned below the upper connecting rod in an inclined mode, the rear support joint is movably arranged in the second storage groove, and the lower end of the rear support joint is hinged to the lower end of the joint body.

As a further improvement of the utility model, a locking mechanism for locking the rear support joint is arranged in the upper connecting rod, the locking mechanism comprises a lock tongue, a spring and a traction linkage assembly, the lock tongue is slidably arranged at the lower end of the upper connecting rod and is elastically abutted by the spring, a locking groove is arranged on the rear support joint, and the lower end of the lock tongue stretches into the locking groove to limit the rear support joint to rotate relative to the joint body; the traction linkage assembly is connected with the lock tongue and used for traction the lock tongue to move upwards to be separated from the locking groove when the lock tongue is folded.

As a further improvement of the utility model, the traction linkage assembly comprises a sleeve, a pull rope and a movable pin, wherein the sleeve is rotatably sleeved at the upper end of the upper connecting rod, two centrally symmetrically distributed bevel grooves are formed in the sleeve along the circumferential direction, two centrally symmetrically distributed long grooves are formed in the upper connecting rod along the axial direction, and the movable pin is inserted into the two bevel grooves and the two long grooves; one end of the pull rope is fixedly connected with the movable pin, and the other end of the pull rope is fixedly connected with the lock tongue; when the sleeve rotates, the movable pin can be pushed to move upwards along the long groove through the bevel slot, and then the movable pin pulls the lock tongue to move upwards through the pull rope.

As a further improvement of the utility model, the folding framework also comprises two upper push rods, the two upper push rods are rotationally connected into a whole through a folding button, and the lower ends of the upper push rods are fixedly connected with the sleeve; the two push rods can fold around the folding button and drive the sleeve to rotate.

As a further improvement of the utility model, the folding framework further comprises two cushion pipes for installing cushions, the two rear support rods are respectively and rotatably connected with a sliding sleeve, and the cushion pipes are inserted into the sliding sleeves in a sliding manner and are hinged with the corresponding front support rods.

The beneficial effects of the utility model are as follows: the utility model provides a folding framework, which is provided with a front supporting rod, a rear supporting rod, an upper connecting rod and a joint assembly, wherein the front supporting rod, the rear supporting rod and the upper connecting rod are connected to the corresponding joint assemblies, and the three parts can relatively rotate through the joint assemblies; meanwhile, the locking mechanisms for locking the rear support joint are arranged in the two upper connecting rods, so that the folding framework can be kept in an unfolding state, and only after the locking mechanisms are operated to release the locking, the folding framework can be folded; in addition, the folding framework has wide application range and can be applied to a child cart, a booster vehicle, a seat, a child dining chair, a pet cart and the like.

Drawings

FIG. 1 is a perspective view of a folding skeleton of the present utility model;

FIG. 2 is a perspective view of another view of the folding skeleton of the present utility model;

FIG. 3 is a cross-sectional view of a folding skeleton of the present utility model;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present utility model;

FIG. 5 is an enlarged view of B of FIG. 3 in accordance with the present utility model;

FIG. 6 is a perspective view of the upper reach bar, upper push bar and traction linkage assembly of the present utility model;

FIG. 7 is an exploded view of the upper reach bar, upper push bar and traction linkage assembly of the present utility model;

FIG. 8 is a schematic view of a folding process of the folding skeleton of the present utility model;

FIG. 9 is a second schematic view of a folding process of the folding skeleton of the present utility model;

FIG. 10 is a schematic view of a fully folded state of the folding framework of the present utility model;

FIG. 11 is a perspective view of the folding framework of the present utility model as applied to a stroller;

FIG. 12 is a perspective view of another embodiment of the folding skeleton of the present utility model applied to a stroller;

FIG. 13 is a perspective view of the folding frame of the present utility model applied to a moped;

FIG. 14 is a perspective view of the folding frame of the present utility model applied to a seat;

FIG. 15 is a perspective view of the folding frame of the present utility model as applied to a child dinning chair;

wherein the direction indicated by the arrow in fig. 1 indicates the corresponding orientation.

The following description is made with reference to the accompanying drawings:

1. a front support bar; 2. a rear support bar; 3. an upper connecting rod; 31. a long groove; 4. a joint assembly; 41. a joint body; 411. a first storage groove; 412. a second storage groove; 42. a front support joint; 43. a rear support joint; 431. a locking groove; 5. a bolt; 6. a front crossover assembly; 61. a first front fork; 62. a second front fork; 7. a connecting rod; 8. a rear crossover assembly; 81. a first rear fork; 82. a second rear fork; 9. a spring; 10. a sleeve; 101. a bevel slot; 102. an avoidance groove; 11. a pull rope; 12. a movable pin; 13. an upper push rod; 14. folding the button; 15. a cushion tube; 16. a sliding sleeve; 17. an outer tube; 18. a fixing pin; 19. a limiting pin; 20. a wheel; 21. an armrest; 22. a canopy framework; 23. a dinner plate.

Detailed Description

Several preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings.

Example 1

Referring to fig. 1 to 10, the present utility model provides a folding skeleton comprising: the front support rod 1, the rear support rod 2, the upper connecting rod 3 and the joint component 4 are arranged in pairs. It should be noted that, the paired arrangement is two symmetrical arrangements.

For ease of understanding, referring to fig. 1, the direction indicated by the arrow is the corresponding direction, and the width direction is the left-right direction.

Referring to fig. 1, the left and right sides of the folding skeleton are symmetrically provided with a front support rod 1, a rear support rod 2, an upper connection rod 3 and a joint assembly 4, wherein the front support rod 1 and the rear support rod 2 positioned on the same side are distributed in a splayed shape, and the upper connection rod 3 is positioned above the front support rod 1 on the same side and is parallel or approximately parallel to the front support rod 1. The joint component 4 is arranged between the front support rod 1, the rear support rod 2 and the upper connecting rod 3, and the front support rod 1, the rear support rod 2 and the upper connecting rod 3 are connected to the corresponding joint component 4, and relative rotation can be generated among the three components (namely the front support rod 1, the rear support rod 2 and the upper connecting rod 3) through the joint component 4.

Further, the front cross assembly 6 is rotatably connected between the two front support rods 1 and the two rear support rods 2, the connecting rods 7 are rotatably connected between the front support rods 1 and the rear support rods 2 which are positioned on the same side, and the rear cross assembly 8 is rotatably connected between the two connecting rods 7 and the two rear support rods 2.

When the two upper connecting rods 3 are pushed to turn forwards to fold, the upper connecting rods 3 can be linked with the front supporting rods 1 and the rear supporting rods 2 through the joint assemblies 4 to rotate relatively, so that the upper connecting rods 3 and the rear supporting rods 2 can be folded to the upper side and the lower side of the front supporting rods 1; meanwhile, in the process of rotating the front support rod 1, the rear support rod 2 and the upper connecting rod 3, the front cross assembly 6 and the rear cross assembly 8 can be driven to fold towards the middle along the width direction, and the front support rod 1, the rear support rod 2, the upper connecting rod 3 and the joint assembly 4 on the left side and the right side can also fold towards the middle along the following direction. By adopting the structural design, the folding framework disclosed by the utility model not only can realize folding in height, but also can realize folding in width, and the upper connecting rod 3 and the rear supporting rod 2 are folded to the side of the front supporting rod 1, so that the folded size of a product can be reduced to about half before folding, the whole folded volume is small, and compared with a product with the volume approximately equivalent to that of a product in an unfolding state on the market, the folded volume is about 30% smaller than that of a similar product.

Referring to fig. 3 and 4, the joint assembly 4 includes a joint body 41, and a front support joint 42 and a rear support joint 43 both hinged to the joint body 41, wherein the joint body 41, the front support joint 42 and the rear support joint 43 are all plastic members. The upper end of the front support rod 1 is fixedly inserted into the front support joint 42, the upper end of the rear support rod 2 is fixedly inserted into the rear support joint 43, and the lower end of the upper connecting rod 3 is fixedly inserted into the joint body 41.

When the upper connecting rod 3 is pushed forward to fold, the joint body 41 rotates anticlockwise along with the upper connecting rod 3, and in the process, the joint body 41 and the front support joint 42 rotate relatively to open; meanwhile, the joint body 41 also drives the rear support joint 43 to rotate anticlockwise, and the rear support joint 43 and the joint body 41 rotate relatively to open until the upper connecting rod 3 and the rear support rod 2 are folded to the side of the front support rod 1.

The connector body 41 is oval, a first receiving slot 411 is disposed on the front side of the connector body 41, the front support connector 42 is movably disposed in the first receiving slot 411, and the upper end of the front support connector 42 is hinged to the upper end of the connector body 41 through a pin. The rear side of the joint body 41 is provided with a second storage groove 412 which is positioned obliquely below the upper connecting rod 3, the rear support joint 43 is movably arranged in the second storage groove 412, and the lower end of the rear support joint 43 is hinged with the lower end of the joint body 41 through a pin shaft. In the unfolded state, the front support joint 42 is stopped and limited in the first receiving slot 411, and the rear support joint 43 is stopped and limited in the second receiving slot 412.

Referring to fig. 1 and 2, the front cross assembly 6 includes a first front fork 61 and a second front fork 62 crossing the first front fork 61, and a middle portion of the first front fork 61 is hinged to a middle portion of the second front fork 62 through a pin. The two ends of the first front fork rod 61 are respectively hinged to one of the front support rods 1 and one of the rear support rods 2 positioned at different sides, and the two ends of the second front fork rod 62 are respectively hinged to the other front support rod 1 and the other rear support rod 2 positioned at different sides.

Specifically, the lower end of the first front fork 61 is directly hinged to a position near the lower end of one of the front support bars 1 on the right side by means of a right angle hinge piece, and the upper end of the first front fork 61 is directly hinged to one of the rear support joints 43 on the left side by means of a right angle hinge piece. The lower end of the second front fork 62 is directly hinged to a position near the lower end of one of the front support bars 1 on the left side by means of a right-angle hinge piece, and the upper end of the second front fork 62 is directly hinged to one of the rear support joints 43 on the right side by means of a right-angle hinge piece. During the folding movement of the two front support rods 1 and the two rear support rods 2, the front cross assembly 6 can be driven to move, so that the first front fork rod 61 and the second front fork rod 62 are folded towards the middle.

With continued reference to fig. 1 and 2, the connecting rods 7 are distributed in a substantially transverse direction, the front ends of the connecting rods 7 are hinged to the middle of the front supporting rod 1 through a pin, the middle of the connecting rods 7 are hinged to the middle of the rear supporting rod 2 through a pin, and the rear ends of the connecting rods 7 extend backwards and are used for being hinged to the rear cross assembly 8.

The rear cross member 8 includes a first rear fork 81 and a second rear fork 82 disposed to cross the first rear fork 81, and a middle portion of the first rear fork 81 is hinged to a middle portion of the second rear fork 82. The two ends of the first rear fork rod 81 are respectively hinged to one of the rear support rods 2 and one of the connecting rods 7 positioned on different sides, and the two ends of the second rear fork rod 82 are respectively hinged to the other rear support rod 2 and the other connecting rod 7 positioned on different sides.

Specifically, the lower end of the first rear fork 81 is hinged to a position on the right side of a rear support rod 2 near the lower end through a U-shaped hinge piece, and the upper end of the first rear fork 81 is hinged to the rear end of the left side of a connecting rod 7 through a U-shaped hinge piece. The lower end of the second rear fork 82 is hinged to a position on the left side of one rear support rod 2 near the lower end through a U-shaped hinge piece, and the upper end of the second rear fork 82 is hinged to the rear end of the right side of one connecting rod 7 through a U-shaped hinge piece. In the folding movement process of the two front support rods 1 and the two rear support rods 2, the two connecting rods 7 can drive the rear cross assemblies 8 to move, so that the first rear fork rod 81 and the second rear fork rod 82 are folded towards the middle. The front cross assembly 6 and the rear cross assembly 8 synchronously move to drive the front support rods 1, the rear support rods 2, the upper connecting rod 3 and the joint assembly 4 at the left side and the right side to be folded towards the middle.

Referring to fig. 3 to 5, a locking mechanism for locking the rear support joint 43 is installed in each of the two upper connection rods 3 so that the folding skeleton of the present utility model is maintained in an unfolded state, and can be folded only after the locking mechanism is operated to release the locking.

The locking mechanism comprises a bolt 5, a spring 9 and a traction linkage assembly. The spring bolt 5 is slidably arranged in the lower end of the upper connecting rod 3, the middle part of the spring bolt 5 is provided with a containing groove, and the spring 9 is arranged in the containing groove. The position of the upper connecting rod 3 close to the lower end of the upper connecting rod is fixedly connected with the joint body 41 through the fixing pin 18, the fixing pin 18 is inserted into the accommodating groove, the upper end of the spring 9 is elastically abutted against the fixing pin 18, the lower end of the spring 9 is elastically abutted against the bottom wall of the accommodating groove, the spring 9 further always applies downward elastic force to the lock tongue 5, and the lock tongue 5 can be stopped by the fixing pin 18 without being separated from the upper connecting rod 3. The rear support joint 43 is provided with a locking groove 431 at a position opposite to the lock tongue 5, and the lower end of the lock tongue 5 extends into the locking groove 431 to form locking so as to limit the rear support joint 43 to rotate relative to the joint body 41. The traction linkage assembly is connected to the tongue 5 for pulling the tongue 5 upward out of the locking groove 431 to unlock the rear support joint 43 when folded.

Wherein, the bottom of the lock tongue 5 is provided with an inclined plane, and the rear support joint 43 pushes the lock tongue 5 to move upwards to avoid the position through the inclined plane in the unfolding process of the lock tongue 5 in a folding state until the lock tongue is completely unfolded in place, and the lock tongue 5 resets under the elasticity of the spring 9, so that the lower end of the lock tongue returns to the locking groove 431 to form locking.

Referring to fig. 5 to 7, the traction linkage assembly includes a sleeve 10, a pull rope 11 and a movable pin 12, wherein the sleeve 10 is rotatably sleeved at the upper end of the upper connecting rod 3. The sleeve 10 is circumferentially provided with two arc avoidance grooves 102 which are distributed in a central symmetry manner, the upper connecting rod 3 is radially provided with a limiting pin 19, two ends of the limiting pin 19 protrude out of the outer circumferential surface of the upper connecting rod 3, and two ends of the limiting pin 19 are respectively inserted into the two avoidance grooves 102. By the cooperation of the limiting pin 19 and the avoiding groove 102, the sleeve 10 can be allowed to rotate around the axis relative to the upper connecting rod 3, but the sleeve 10 is not allowed to axially move relative to the upper connecting rod 3.

In addition, two bevel grooves 101 which are symmetrically distributed in the center are also arranged below the two avoidance grooves 102 along the circumferential direction, and the bevel grooves 101 can be regarded as being formed by connecting a circumferential arc groove and an axial conical groove with wide upper part and narrow lower part. The upper connecting rod 3 is axially provided with two elongated slots 31 which are symmetrically distributed in the center, and the elongated slots 31 are opposite to the conical slots. The movable pin 12 is inserted into the two long grooves 31, and two ends of the movable pin 12 are also inserted into the two bevel grooves 101. The stay 11 is arranged inside the upper connecting rod 3, one end of the stay is fixedly connected with the movable pin 12, and the other end of the stay is fixedly connected with the lock tongue 5.

As shown in fig. 6, in the unfolded state, the movable pin 12 is located at the lower end positions of the long groove 31 and the tapered groove of the bevel groove 101, when the sleeve 10 rotates, the movable pin 12 can be pushed to move upwards along the long groove 31 by the tapered groove of the bevel groove 101, meanwhile, the movable pin 12 stays at the arc groove in a sliding manner from the tapered groove of the bevel groove 101, and then the movable pin 12 pulls the lock tongue 5 to move upwards by the pull rope 11, so that the locking is released.

Wherein, the outer tube 17 is fixedly sleeved outside the sleeve 10.

Referring again to fig. 1 and 6, the folding skeleton of the present utility model further comprises two upper push rods 13, and the two upper push rods 13 are rotatably connected together by a folding button 14. The folding button 14 is a conventional technology, and is not used as an improvement of the present utility model, so detailed description will not be repeated, and the folding button 14 can enable the two push rods 13 to fold. The lower ends of the two upper push rods 13 are respectively and fixedly connected to the two sleeves 10, and the two upper push rods 13 can fold around the folding button 14 and drive the sleeves 10 to rotate.

The folding process of the folding framework comprises the following steps:

initially the skeleton is in an unfolded state, pressing the folding button 14 and pushing the push rod 13 forward; the two push rods 13 rotate around the folding button 14 (the movement can be allowed by the clearance and deformation among the joint body 41, the front support joint 42 and the rear support joint 43), the push rods 13 drive the sleeve 10 to synchronously rotate, the movable pin 12 is pushed to move upwards in the rotating process of the sleeve 10, and the lock tongue 5 is pulled to move upwards through the pull rope 11 so as to release the locking; as shown in fig. 8 and 9, in the process of pushing the upper push rod 13 next, the upper push rod 13 drives the upper connecting rod 3 to move forwards, the front support joint 42 and the rear support joint 43 are rotated relatively to open in the process of following the movement of the upper connecting rod 3 by the joint body 41, the front support rod 1 and the rear support rod 2 also move in a following manner, and in the process of moving the front support rod 1 and the rear support rod 2, the front cross assembly 6 and the rear cross assembly 8 can be driven to retract towards the middle in the width direction, so that the front support rods 1, the rear support rods 2, the upper connecting rod 3 and the joint assembly 4 on the left side and the right side can retract towards the middle in a following manner; as shown in fig. 10, until the upper link 3 and the rear support bar 2 are folded to the upper and lower sides of the front support bar 1, a fully folded state is reached.

Therefore, the folding framework has the functions of folding and unfolding by one hand, and is greatly convenient to use.

In other embodiments of the present utility model, the two push-up levers 13 may be separated, that is, the two push-up levers 13 are not connected by the folding button 14, and the folding function can be implemented as well. This embodiment also needs to be rotated to drive the sleeve 10 to rotate to pull the lock tongue 5 for unlocking when pushing the push rod 13.

In addition, the folding framework of the utility model further comprises two cushion pipes 15 for installing cushions, the two rear support rods 2 are respectively and rotatably connected with a sliding sleeve 16, the sliding sleeve 16 is hinged to one side of the rear support joint 43 through a pin shaft, and the cushion pipes 15 are slidably inserted into the sliding sleeve 16 and are hinged to the corresponding front support rods 1. In the unfolded state, both cushion pipes 15 are substantially horizontally distributed, and in the folded state, both cushion pipes 15 can be folded to the side of the upper end of the front support rod 1 and substantially parallel to the front support rod 1 (as shown in fig. 10).

The cushion pipe 15 is an optional component, and for example, the folding skeleton of the present utility model may not include the cushion pipe 15 when applied to a power assisted vehicle.

Example two

Referring to fig. 11, the present utility model further provides a stroller, which includes a folding framework in the first embodiment, and wheels 20 are mounted at bottoms of two front support rods 1 and two rear support rods 2 of the folding framework. The child stroller provided by the utility model realizes a folding function by folding the framework.

Example III

Referring to fig. 12, the present utility model further provides a stroller, which includes a folding framework in the first embodiment, and wheels 20 are mounted at bottoms of two front support rods 1 and two rear support rods 2 of the folding framework. The child stroller provided by the utility model realizes a folding function by folding the framework.

In addition, a shower head frame 22 is arranged between the two upper connecting rods 3 of the folding framework, and is used for installing shower heads. An armrest 21 is mounted between the two joint assemblies 4 of the folding skeleton for the child to hold.

Wherein, the shower head skeleton 22 and the armrests 21 are made of soft materials, such as PVC materials, so that the shower head skeleton 22 and the armrests 21 can be folded along with the folding skeleton.

Example IV

Referring to fig. 13, the present utility model further provides a power-assisted vehicle, which includes a folding framework with the cushion pipe 15 and the sliding sleeve 16 removed in the first embodiment, wherein wheels 20 are mounted at the bottoms of two front support rods 1 and two rear support rods 2 of the folding framework, and the power-assisted vehicle realizes a folding function through the folding framework.

Example five

Referring to fig. 14, the present utility model also provides a seat implemented by the folding skeleton of the first embodiment, wherein the bottoms of the two front support rods 1 and the two rear support rods 2 of the folding skeleton directly serve as seat support feet or are additionally provided with cushion feet to be supported on the bottom surface. The seat provided by the utility model realizes a folding function by folding the framework.

Example six

Referring to fig. 15, the present utility model also provides a child dining chair, which is implemented by adopting the folding framework in the first embodiment, wherein the bottoms of the two front support rods 1 and the two rear support rods 2 of the folding framework directly serve as dining chair support legs or are additionally provided with cushion legs to be supported on the bottom surface. A dinner plate 23 is detachably arranged between the two joint assemblies 4 of the folding framework, and the dinner plate 23 can be detached before folding. The child dining chair disclosed by the utility model realizes a folding function by folding the framework.

Example seven

The utility model also provides a pet cart, which comprises a folding framework in the first embodiment, wherein wheels 20 are arranged at the bottoms of two front support rods 1 and two rear support rods 2 of the folding framework; the folding framework can be additionally provided with a pet basket for placing pets. The pet cart disclosed by the utility model realizes a folding function by folding the framework.

While the folding chassis of the present utility model has been illustrated above as being useful in a child stroller, booster cycle, seat, child dining chair, and pet stroller, the present utility model is not so limited and can be practiced in many other ways than as described herein.

Therefore, the utility model provides a folding framework, which is provided with a front supporting rod 1, a rear supporting rod 2, an upper connecting rod 3 and a joint component 4, wherein the front supporting rod 1, the rear supporting rod 2 and the upper connecting rod 3 are all connected to the corresponding joint component 4, and relative rotation can be realized between the front supporting rod 1 and the rear supporting rod 2 through the joint component 4, a front cross component 6 is rotationally connected between the front supporting rod 1 and the rear supporting rod 2 which are positioned on the same side, a connecting rod 7 is rotationally connected between the two connecting rods 7 and the two rear supporting rods 2, and a rear cross component 8 is rotationally connected between the two connecting rods 7 and the two rear supporting rods 2, so that the upper connecting rod 3 and the rear supporting rod 2 can be folded to the upper side and the lower side of the front supporting rod 1, and the front cross component 6 and the rear cross component 8 can be driven to be folded towards the middle along the width direction, the folding in height can be realized, the folding in width can be realized, the whole size after the folding framework is small in structure, the design is concise, and the folding framework can be operated by one hand, and the folding framework is greatly convenient to use; in addition, the locking mechanisms for locking the rear support joints 43 are arranged in the two upper connecting rods 3, so that the folding framework of the utility model is kept in an unfolding state, and can be folded only after the locking mechanisms are operated to release the locking.

In addition, the folding framework has wide application range and can be applied to a child cart, a booster vehicle, a seat, a child dining chair, a pet cart and the like.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The foregoing description is only of a preferred embodiment of the utility model, which can be practiced in many other ways than as described herein, so that the utility model is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model without departing from the technical solution of the present utility model still falls within the scope of the technical solution of the present utility model.

Claims (10)

1. A folding framework, comprising: the novel connecting rod comprises a front supporting rod (1), a rear supporting rod (2), an upper connecting rod (3) and a joint assembly (4), wherein the front supporting rod (1), the rear supporting rod (2) and the upper connecting rod (3) are arranged in pairs, are connected to the corresponding joint assemblies (4), and can rotate relatively through the joint assemblies (4); a front cross assembly (6) is rotationally connected between the two front support rods (1) and the two rear support rods (2), connecting rods (7) are rotationally connected between the front support rods (1) and the rear support rods (2) which are positioned on the same side, and a rear cross assembly (8) is rotationally connected between the two connecting rods (7) and the two rear support rods (2); when pushing two upper connecting rods (3) to turn forward for folding, the upper connecting rods (3) can be linked with the front supporting rods (1) and the rear supporting rods (2) through the joint assemblies (4) to rotate relatively, and drive the front cross assemblies (6) and the rear cross assemblies (8) to fold towards the middle along the width direction.

2. The folding framework of claim 1, wherein: the front cross assembly (6) comprises a first front fork rod (61) and a second front fork rod (62) which is in cross distribution with the first front fork rod (61), and the middle part of the first front fork rod (61) is hinged with the middle part of the second front fork rod (62); the two ends of the first front fork rod (61) are respectively hinged to one front supporting rod (1) and one rear supporting rod (2) which are positioned on different sides, and the two ends of the second front fork rod (62) are respectively hinged to the other front supporting rod (1) and the other rear supporting rod (2) which are positioned on different sides.

3. The folding framework of claim 1, wherein: one end of the connecting rod (7) is hinged to the middle of the front supporting rod (1), the middle of the connecting rod (7) is hinged to the middle of the rear supporting rod (2), and the other end of the connecting rod (7) extends backwards and is used for being hinged to the rear cross assembly (8).

4. The folding framework of claim 2, wherein: the rear cross assembly (8) comprises a first rear fork rod (81) and second rear fork rods (82) which are in cross distribution with the first rear fork rod (81), and the middle part of the first rear fork rod (81) is hinged with the middle part of the second rear fork rod (82); two ends of the first rear fork rod (81) are respectively hinged to one of the rear support rods (2) and one of the connecting rods (7) which are positioned on different sides, and two ends of the second rear fork rod (82) are respectively hinged to the other rear support rod (2) and the other connecting rod (7) which are positioned on different sides.

5. The folding framework of claim 1, wherein: the connector assembly (4) comprises a connector body (41), a front support connector (42) and a rear support connector (43), wherein the front support connector (42) and the rear support connector (43) are hinged with the connector body (41), the upper end of the front support rod (1) is fixedly connected with the front support connector (42), the upper end of the rear support rod (2) is fixedly connected with the rear support connector (43), and the lower end of the upper connection rod (3) is fixedly connected with the connector body (41); when the folding device is folded, the front support joint (42) and the rear support joint (43) can rotate relative to each other in the process that the joint body (41) follows the upper connecting rod (3) to move.

6. The folding framework of claim 5, wherein: the front side of the joint body (41) is provided with a first accommodating groove (411), the front support joint (42) is movably arranged in the first accommodating groove (411), and the upper end of the front support joint (42) is hinged with the upper end of the joint body (41); the rear side of the joint body (41) is provided with a second storage groove (412) which is positioned below the upper connecting rod (3) in an inclined mode, the rear support joint (43) is movably arranged in the second storage groove (412), and the lower end of the rear support joint (43) is hinged to the lower end of the joint body (41).

7. The folding framework of claim 5, wherein: the locking mechanism for locking the rear support joint (43) is arranged in the upper connecting rod (3), the locking mechanism comprises a lock tongue (5), a spring (9) and a traction linkage assembly, the lock tongue (5) is slidably arranged at the lower end of the upper connecting rod (3) and is elastically propped by the spring (9), a locking groove (431) is formed in the rear support joint (43), and the lower end of the lock tongue (5) extends into the locking groove (431) to limit the rear support joint (43) to rotate relative to the joint body (41); the traction linkage assembly is connected with the lock tongue (5) and is used for traction the lock tongue (5) to move upwards to be separated from the locking groove (431) when the lock tongue is folded.

8. The folding framework of claim 7, wherein: the traction linkage assembly comprises a sleeve (10), a pull rope (11) and a movable pin (12), wherein the sleeve (10) is rotatably sleeved at the upper end of the upper connecting rod (3), two bevel grooves (101) which are distributed in a central symmetry mode are formed in the sleeve (10) along the circumferential direction, two long grooves (31) which are distributed in a central symmetry mode are formed in the upper connecting rod (3) along the axial direction, and the movable pin (12) is inserted in the two bevel grooves (101) and the two long grooves (31); one end of the pull rope (11) is fixedly connected with the movable pin (12), and the other end of the pull rope (11) is fixedly connected with the lock tongue (5); when the sleeve (10) rotates, the movable pin (12) can be pushed by the bevel slot (101) to move upwards along the long slot (31), and then the movable pin (12) pulls the lock tongue (5) to move upwards through the pull rope (11).

9. The folding framework of claim 8, wherein: the folding push rod comprises a sleeve (10) and is characterized by further comprising two upper push rods (13), wherein the two upper push rods (13) are rotationally connected into a whole through a folding button (14), and the lower ends of the upper push rods (13) are fixedly connected with the sleeve; the two push-up rods (13) can fold around the folding buttons (14) and drive the sleeve (10) to rotate.

10. The folding framework of claim 1, wherein: the seat cushion is characterized by further comprising two seat cushion pipes (15) used for installing a seat cushion, wherein the two rear support rods (2) are respectively connected with a sliding sleeve (16) in a rotating mode, and the seat cushion pipes (15) are inserted in the sliding sleeves (16) in a sliding mode and are hinged to the corresponding front support rods (1).