Folding cart

Abstract

The utility model discloses a folding stroller, and belongs to the technical field of infant products. A folding cart comprises a frame and a moving part installed at the bottom of the frame, the frame comprises a connecting support and two sets of vertical frame structures oppositely arranged front and back, the two ends of the connecting support are rotationally connected with the two sets of vertical frame structures respectively, and the folding cart further comprises a supporting assembly, and the rotating end of the supporting assembly is rotationally connected with the vertical frame structures; the sliding end of the supporting assembly is slidably connected with the connecting support. The supporting assembly drives the connecting support to arch upwards and be folded to form a shape which is approximately perpendicular to the plane where the vertical frame structure is located, at the moment, the frame occupies the smallest area and is convenient to carry and store, the supporting assembly is unfolded and locked, and the frame forms a cuboid containing space. The supporting assembly is connected with the vertical frame structure and drives the connecting support to move, so that the product structure is more stable, and the product strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of infant products, in particular to a folding stroller. Background Art

[0002] With the development of society and the improvement of people's living standards, outdoor leisure has become a favorite sport and leisure method, attracting more and more families. Parents and other guardians prefer to accompany infants and young children to play outdoors in their free time. As a child product suitable for outdoor play, a stroller can not only allow infants and young children to sit or lie in the stroller, making it convenient to take children to play everywhere, but also can hold some outdoor products, making the stroller a labor-saving and convenient tool for transportation.

[0003] In the prior art, the cart has many rods, the folding parts are complicated, the folding operation is cumbersome, and the user's fingers are easily pinched during the folding process. In addition, the volume of such folding cart products is still large after folding, which is inconvenient to carry, and they are not stable in the folded state and are easily deformed.

[0004] Therefore, the utility model provides a folding cart, which can effectively solve the above problems. The folded cart has a simple structure and is small and stable. Utility Model Content

[0005] The utility model aims to solve the problems of unsafe use, large size and instability of the folding cart in the prior art, and proposes a folding cart.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A folding cart comprises a frame and a movable part installed at the bottom of the frame, wherein the frame comprises a connecting bracket and two sets of upright frame structures arranged opposite to each other in the front and rear directions, wherein the two ends of the connecting bracket are rotatably connected to the two sets of upright frame structures respectively, and further comprises a supporting assembly, wherein the rotating end of the supporting assembly is rotatably connected to the upright frame structure, and the sliding end of the supporting assembly is slidably connected to the connecting bracket, and when the frame is transformed between a folded state and an unfolded state, the rotating end of the supporting assembly rotates on the upright frame structure, and the sliding end of the supporting assembly slides at the connection between the two sets of connecting brackets along the direction of the upright frame structure, and the connecting bracket rotates relative to the upright frame structure.

[0008] Preferably, the support assembly includes a first support member and a second support member rotatably matched with the first support member, wherein the first support member has a rotating end and a sliding end, the rotating end is rotatably connected to the frame structure, the sliding end is slidably connected to the connecting bracket, and the second support member is rotatably connected to the frame structure.

[0009] Preferably, the connecting bracket includes a first frame and a second frame, both of which are provided with a second cross bar, the first frame is rotatably connected to the second frame via a first hinge seat, and the ends of the first frame and the second frame that are away from each other are rotatably connected to the frame structure respectively.

[0010] Preferably, the frame structure includes a first vertical pole and a first cross bar, the upper and lower ends of the first vertical pole are respectively connected to the first cross bar through a first connecting seat and a second connecting seat, and a first rotating seat is fixedly connected to the first vertical pole, wherein the connecting bracket is rotatably connected to the first connecting seat, and the supporting assembly is respectively rotatably connected to the second connecting seat and the first rotating seat.

[0011] Furthermore, the first support member includes: a first mounting block, to which a first vertical rod is fixedly connected, to which a guide sleeve is slidably connected, and the guide sleeve is connected to a first hinged seat through a locking structure; a first folding rod rotatably connected to the first mounting block, a free end of the first folding rod rotatably connected to a second folding rod, and the second folding rod is rotatably connected to a second connecting seat.

[0012] Furthermore, the second support member includes two third folding rods rotatably connected, and the free ends of the third folding rods are rotatably connected to the first rotating seat, wherein the first folding rod is provided with a second rotating seat, and the third folding rod is provided with a positioning hole, and the positioning hole cooperates with the second rotating seat.

[0013] Preferably, it also includes: a second mounting block, to which a second vertical rod is slidably connected, and a handle is provided on the top of the second vertical rod; a fourth folding rod rotatably connected to the second mounting block, and the free end of the fourth folding rod is rotatably connected to a locking piece, and the locking piece is rotatably matched with the first connecting seat.

[0014] Furthermore, the movable part includes a walking wheel and a steering wheel arranged at the bottom of the frame, wherein the first connecting seat is rotatably connected to the steering seat, the steering wheel is rotatably connected to the steering seat, a shock-absorbing groove is opened in the steering seat, a guide block is slidably connected in the shock-absorbing groove, and a spring that resists the guide block is arranged in the shock-absorbing groove, and the rotating shaft of the steering wheel is fixedly connected to the guide block.

[0015] Preferably, it further comprises a second vertical pole, which is fixedly connected to the first vertical pole, and the top of the second vertical pole is rotatably connected to a push rod via a locking member, and the locking member is used to allow or hinder the relative rotation between the push rod and the second vertical pole.

[0016] Furthermore, the locking member includes a first gear head and a second gear head, and the first gear head is meshed with the end surface of the second gear head. When the first gear head and the second gear head rotate relatively, the gear teeth switch the meshing position.

[0017] Compared with the prior art, the utility model provides a folding cart with the following beneficial effects:

[0018] 1. The folding cart forms a stable structure of the entire support assembly by locking the sliding end, thereby ensuring the use strength of the product; when storing the product, the two wings of the first support member are retracted, and the sliding end plays a role in guiding the deformation of the connecting bracket. The second support member is also retracted to assist the two wings of the first support member to retract quickly, without manually pushing and pulling the first support member, thereby completing the quick storage, preventing the hand from being pinched, and ensuring the safety of use;

[0019] 2. In the folding cart, when the two upright structures are close to realize the storage of the frame, the first frame body and the second frame body rotate around the first hinge seat, thereby completing the rapid arching of the connecting bracket. When in use, the first frame body and the second frame body are completely flattened, and the first hinge seat acts as a dead point to prevent the frame from being deformed during use, thereby ensuring the safety of use;

[0020] 3. The folding cart can effectively reduce the bumps of the frame when traveling through the spring-supported steering wheel axle. Here, a locking bolt can be threadedly connected to the guide block, and the seismic resistance of the steering wheel can be controlled by rotating the locking bolt against the position of the inner wall of the shock-absorbing groove.

[0021] The parts not involved in the device are the same as the prior art or can be implemented by using the prior art. When the product is stored in the utility model, the two sets of stand structures approach each other to reach the minimum distance, and the support assembly is squeezed by the stand structure and folds upward with the connecting bracket to form a shape that is approximately perpendicular to the plane where the stand structure is located. At this time, the frame occupies the smallest area and is convenient for carrying and storage. When the product is used, the two sets of stand structures are pulled in opposite directions to unfold the support assembly, and at the same time the connecting bracket is sunk until its plane is perpendicular to the plane where the stand structure is located. At this time, the support assembly is locked, and the frame forms a rectangular accommodating space. The support assembly is connected to the stand structure and drives the connecting bracket to move, thereby making the product structure more stable and improving the product strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The use state of a folding cart proposed by the utility model Figure 1 ;

[0023] Figure 2 The use state of a folding cart proposed by the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the frame structure of a folding cart proposed by the utility model;

[0025] Figure 4 A diagram of a folding state of a folding cart proposed by the utility model;

[0026] Figure 5 The frame of the folding cart proposed by the utility model is unfolded Figure 1 ;

[0027] Figure 6 The frame of the folding cart proposed by the utility model is unfolded Figure 2 ;

[0028] Figure 7 A folding diagram of a frame of a folding cart proposed by the utility model;

[0029] Figure 8 This is a structural schematic diagram of a first supporting member of a folding cart proposed by the utility model;

[0030] Fig. 9 This is a schematic structural diagram of a second supporting member of a folding cart proposed by the utility model;

[0031] Fig.10 This is a partial structural schematic diagram of a folding cart proposed by the utility model;

[0032] Fig.11 The utility model is a structural schematic diagram of a steering wheel of a folding cart.

[0033] In the figure: 1, connecting bracket; 101, first frame; 102, second frame; 103, first hinge seat; 104, second cross bar; 2, support assembly; 3, first support member; 301, first mounting block; 302, guide sleeve; 303, first vertical rod; 304, first folding rod; 3041, second rotating seat; 305, second folding rod; 4, second support member; 401, third folding rod; 4011, positioning hole; 5, frame structure; 501, first vertical rod; 5011 , first rotating seat; 502, first cross bar; 503, first connecting seat; 504, second connecting seat; 6, second mounting block; 601, second vertical bar; 602, fourth folding bar; 603, first gear head; 604, handle; 7, second vertical bar; 701, push rod; 702, drag rod; 703, supporting cloth; 8, walking wheel; 9, steering seat; 901, guide block; 902, spring; 903, locking bolt; 904, steering wheel; 10, handrail; 11, shielding cover. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] Example:

[0037] Reference Figure 1-Figure 11 A folding cart comprises a frame and a moving part installed at the bottom of the frame, wherein the frame comprises a connecting bracket 1 and two sets of frame structures 5 arranged opposite to each other in the front and rear directions, wherein the two ends of the connecting bracket 1 are rotatably connected to the two sets of frame structures 5 respectively, and further comprises a supporting assembly 2, wherein the rotating end of the supporting assembly 2 is rotatably connected to the frame structure 5, and the sliding end of the supporting assembly 2 is slidably connected to the connecting bracket 1, and when the frame is transformed between a folded state and an unfolded state, the rotating end of the supporting assembly 2 rotates on the frame structure 5, and the sliding end of the supporting assembly 2 slides at the connection between the two sets of connecting brackets 1 along the direction of the frame structure 5, and the connecting bracket 1 rotates relative to the frame structure 5.

[0038] Through the above design, when the product is stored, the two sets of stand structures 5 approach each other to reach the minimum distance, and the support component 2 is squeezed by the stand structure 5, arched and folded upward with the connecting bracket 1, forming a shape that is approximately perpendicular to the plane where the stand structure 5 is located. At this time, the frame occupies the smallest area and is convenient for carrying and storage; when the product is used, the two sets of stand structures 5 are pulled in opposite directions to unfold the support component 2, and at the same time, the connecting bracket 1 sinks until its plane is perpendicular to the plane where the stand structure 5 is located. At this time, the support component 2 is locked, and the frame forms a rectangular accommodating space. The support component 2 is connected to the stand structure 5 and drives the connecting bracket 1 to move, thereby making the product structure more stable and improving the product strength.

[0039] Specifically, the support assembly 2 includes a first support member 3 and a second support member 4 rotatably connected to the first support member 3, wherein, when the frame is unfolded for use, the first support member 3 is in a "Y" shape, and its two wings have a rotating end, which is mainly rotatably connected to the stand structure 5, and the lower part is a sliding end, which is slidably connected to the connecting bracket 1, and the second support member 4 is in an inverted "V" shape, which is also rotatably connected to the stand structure 5. By locking the sliding end, the entire support assembly 2 forms a stable structure to ensure the strength of the product; when storing the product, the two wings of the first support member 3 are retracted, and the sliding end serves to guide the deformation of the connecting bracket 1, and the second support member 4 is also retracted to assist the two wings of the first support member 3 to retract quickly, without the need to manually push and pull the first support member 3, thereby completing rapid storage, preventing hands from being pinched, and ensuring safety of use.

[0040] Specifically, the connecting bracket 1 includes a first frame body 101 and a second frame body 102. The first frame body 101 and the second frame body 102 are both provided with a second cross bar 104 for enhancing the strength of the entire frame. The first frame body 101 is rotatably connected to the second frame body 102 through a first hinge seat 103. The ends of the first frame body 101 and the second frame body 102 that are away from each other are respectively rotatably connected to the vertical frame structure 5. When the two vertical frame structures 5 are close to achieve the storage of the frame, the first frame body 101 and the second frame body 102 rotate around the first hinge seat 103, thereby completing the rapid arching of the connecting bracket 1. When in use, the first frame body 101 and the second frame body 102 are completely flattened, and the first hinge seat 103 acts as a dead point to prevent the frame from deforming during use, thereby ensuring safety of use.

[0041] Specifically, the frame structure 5 includes a first vertical pole 501 and a first cross bar 502, and the upper and lower ends of the first vertical pole 501 are respectively connected to the first cross bar 502 through a first connecting seat 503 and a second connecting seat 504, thereby forming a flat rectangular frame, and a first rotating seat 5011 is fixedly connected to the first vertical pole 501, wherein the connecting bracket 1 is rotatably connected to the first connecting seat 503, and the supporting assembly 2 is respectively rotatably connected to the second connecting seat 504 and the first rotating seat 5011, thereby ensuring the smoothness and quickness of the frame storage and unfolding.

[0042] The first support member 3 includes: a first mounting block 301, to which a first vertical rod 303, i.e. a sliding end, is fixedly connected, and a guide sleeve 302 is slidably connected, and the guide sleeve 302 is connected to the first hinge seat 103 through a locking structure, wherein the locking structure can be selected as a knob bolt, and locking is achieved when the frame is unfolded, thereby preventing the first frame body 101 and the second frame body 102 from passing the dead point position, thereby ensuring the use strength of the overall frame; and a first folding rod 304 rotatably connected to the first mounting block 301, and the free end of the first folding rod 304 is rotatably connected to the second folding rod 305, and the first folding rod 304 and the second folding rod 305 constitute the two wings of the first support member 3, and the second folding rod 305 is rotatably connected to the second connecting seat 504.

[0043] The second support member 4 includes two third folding rods 401 that are rotatably connected to each other, which form an inverted "V" shape when the frame is unfolded. The free end of the third folding rod 401 is rotatably connected to the first rotating seat 5011, wherein the first folding rod 304 is provided with a second rotating seat 3041, and the third folding rod 401 is provided with a positioning hole 4011. The positioning hole 4011 and the second rotating seat 3041 are locked by screws, so that the third folding rod 401 and the first folding rod 304 can rotate relative to each other. When the frame is stored, the first folding rod 304 and the second folding rod 305 can be pushed to fold quickly.

[0044] It also includes: a second mounting block 6, to which a second vertical rod 601 is slidably connected, and a handle 604 is fixedly connected to the top of the second vertical rod 601, which can be used to push or pull the folding bicycle; and a fourth folding rod 602 rotatably connected to the second mounting block 6, and a locking member is rotatably connected to the free end of the fourth folding rod 602, and the locking member is rotatably matched with the first connecting seat 503, thereby changing the angle between the second vertical rod 601 and the plane where the frame structure 5 is located, and adjusting it according to the height of the user to improve the convenience of use.

[0045] Specifically, the moving part includes a walking wheel 8 arranged at the bottom of the frame and a steering wheel 904 for controlling the moving direction of the frame, wherein a steering seat 9 is rotatably connected to the first connecting seat 503, and the steering wheel 904 is rotatably connected to the steering seat 9. A shock-absorbing groove is opened in the steering seat 9, and a guide block 901 is slidably connected in the shock-absorbing groove, and a spring 902 is arranged in the shock-absorbing groove to resist the guide block 901. The rotating shaft of the steering wheel 904 is fixedly connected to the guide block 901, so that when the frame is moved by holding the handle 604, the steering can be directly performed by the steering wheel 904, and the steering wheel 904 shaft supported by the spring 902 can effectively reduce the bumping of the frame when it is moving. Here, a locking bolt 903 can be threadedly connected to the guide block 901, and the seismic resistance of the steering wheel 904 can be controlled by rotating the locking bolt 903 to resist the position of the inner wall of the shock-absorbing groove.

[0046] It also includes a second upright pole 7, which is fixedly connected to the first upright pole 501 and parallel to each other. The top of the second upright pole 7 is rotatably connected to a push rod 701 through a locking member. The locking member is used to allow or hinder the relative rotation between the push rod 701 and the second upright pole 7, and adjust the angle between the push rod 701 and the second upright pole 7 to facilitate pushing or pulling the entire folding cart from the other side. In addition, a tow rod 702 is fixedly connected to the second upright pole 7, and a supporting cloth 703 is connected to the tow rod 702, so as to form a rectangular receiving groove with the supporting cloth 703 covered by the rectangular frame of the frame structure 5, and the tow rod 702 is located below the push rod 701, and will not increase the lateral volume of the product, can reasonably utilize the space below the push rod 701, and is closer to the user, so that the user can take and store items conveniently.

[0047] Specifically, the locking member includes a first gear head 603 and a second gear head. The first gear head 603 is meshed with the end face of the second gear head, and the two can rotate relative to each other. When the first gear head 603 and the second gear head rotate relative to each other, the gear teeth can switch the meshing position. Here, the two gear heads can be connected by an elastic member so that they have a certain deformation in the axial direction. Of course, they can also rotate directly. At this time, the end face teeth are smaller to ensure relative rotation.

[0048] In the utility model, when the frame is unfolded for use, the second folding rod 305 is in a horizontal state, and is connected to a handrail 10 via an open ring buckle to prevent children from pinching their hands. At the same time, a storable shielding cover 11 is connected to the top of the frame, which is unfolded when in use to shield the internal space of the frame and can be folded up when storable.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A folding cart, comprising a frame and a moving part installed at the bottom of the frame, wherein the frame comprises a connecting bracket (1) and two sets of vertical frame structures (5) arranged opposite to each other in the front and rear directions, and the two ends of the connecting bracket (1) are respectively rotatably connected to the two sets of vertical frame structures (5), characterized in that: Also includes a support assembly (2), The rotating end of the support component (2) is rotationally connected to the stand structure (5), and the sliding end of the support component (2) is slidingly connected to the connecting bracket (1). When the frame is transformed between the folded state and the unfolded state, the rotating end of the support component (2) rotates on the stand structure (5), and the sliding end of the support component (2) slides at the connection between the two groups of connecting brackets (1) along the direction of the stand structure (5), and the connecting bracket (1) rotates relative to the stand structure (5).

2. A folding cart according to claim 1, characterized in that: The support assembly (2) comprises a first support member (3) and a second support member (4) rotatably matched with the first support member (3). The first support member (3) has a rotating end and a sliding end, the rotating end is rotatably connected to the stand structure (5), the sliding end is slidably connected to the connecting bracket (1), and the second support member (4) is rotatably connected to the stand structure (5).

3. A folding cart according to claim 2, characterized in that: The connecting bracket (1) comprises a first frame body (101) and a second frame body (102), wherein the first frame body (101) and the second frame body (102) are both provided with a second cross bar (104), the first frame body (101) is rotatably connected to the second frame body (102) via a first hinge seat (103), and the ends of the first frame body (101) and the second frame body (102) which are away from each other are rotatably connected to the vertical frame structure (5).

4. A folding cart according to claim 3, characterized in that: The frame structure (5) comprises a first vertical rod (501) and a first cross rod (502); the upper and lower ends of the first vertical rod (501) are connected to the first cross rod (502) via a first connecting seat (503) and a second connecting seat (504), respectively; and the first vertical rod (501) is fixedly connected to a first rotating seat (5011). Wherein, the connecting bracket (1) is rotatably connected to the first connecting seat (503), and the supporting assembly (2) is rotatably connected to the second connecting seat (504) and the first rotating seat (5011) respectively.

5. A folding cart according to claim 4, characterized in that: The first supporting member (3) comprises: A first mounting block (301), the first mounting block (301) being fixedly connected to a first vertical rod (303), the first vertical rod (303) being slidably connected to a guide sleeve (302), the guide sleeve (302) being connected to a first hinge seat (103) via a locking structure; A first folding rod (304) is rotatably connected to the first mounting block (301), wherein the free end of the first folding rod (304) is rotatably connected to a second folding rod (305), and the second folding rod (305) is rotatably connected to a second connecting seat (504).

6. A folding cart according to claim 5, characterized in that: The second support member (4) comprises two third folding rods (401) which are rotatably connected to each other, and the free ends of the third folding rods (401) are rotatably connected to the first rotating seat (5011). Wherein, the first folding rod (304) is provided with a second rotating seat (3041), and the third folding rod (401) is provided with a positioning hole (4011), and the positioning hole (4011) matches with the second rotating seat (3041).

7. A folding cart according to claim 4, characterized in that: Also includes: A second mounting block (6), the second mounting block (6) being slidably connected to a second vertical rod (601), and a handle (604) being provided at the top of the second vertical rod (601); A fourth folding rod (602) is rotatably connected to the second mounting block (6), and a locking member is rotatably connected to the free end of the fourth folding rod (602), and the locking member is rotatably matched with the first connecting seat (503).

8. A folding cart according to claim 7, characterized in that: The moving part comprises a walking wheel (8) and a steering wheel (904) arranged at the bottom of the frame. The first connecting seat (503) is rotatably connected to a steering seat (9), the steering wheel (904) is rotatably connected to the steering seat (9), a shock absorbing groove is provided in the steering seat (9), a guide block (901) is slidably connected in the shock absorbing groove, and a spring (902) is provided in the shock absorbing groove to abut against the guide block (901), and the rotating shaft of the steering wheel (904) is fixedly connected to the guide block (901).

9. A folding cart according to claim 7, characterized in that: The invention also comprises a second vertical rod (7), wherein the second vertical rod (7) is fixedly connected to the first vertical rod (501), and the top of the second vertical rod (7) is rotatably connected to a push rod (701) via a locking member, and the locking member is used to allow or hinder the relative rotation between the push rod (701) and the second vertical rod (7).

10. A folding stroller according to claim 9, characterized in that: The locking component comprises a first gear head (603) and a second gear head. The first gear head (603) meshes with the end surface of the second gear head. When the first gear head (603) rotates relatively to the second gear head, the gear teeth switch the meshing position.

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