KR20230002255U - folding type cart - Google Patents

Abstract

A foldable cart is disclosed. The disclosed folding cart includes a box and wheels that move on the bottom of the box. The box includes four side plates and a bottom plate, and the four side plates include a pair of folding plates and a fixing plate. The folding plate rotates the first side plate and the second side plate, and includes a limiting means configured to limit the rotation of the first side plate and the second side plate. The first side plate and the second side plate are rotated and folded and then positioned between the fixing plates. The structure of the restrictor consists of a combined slide and a slider. The combined slide includes a first slide mounted on the inner wall of the first side plate and a second slide mounted on the inner wall of the second side plate. When the slider is completely separated from the first slide or the second slide, the first side plate and the second side plate can be folded against each other. Additionally, if the slider is in the first slide and the second slide at the same time, the slider constrains the first side plate and the second side plate to be in the same plane when unfolded. The folding cart structure of the present invention enables faster and more convenient operation and maintains the state of the box more stably when unfolded or folded.

Description

Folding cart {folding type cart}

The present invention relates to a cart, and more specifically to a collapsible cart, wherein the cart is surrounded by a bottom wall and four side walls, one of which is foldable so that it touches another side, and this bottom wall This relates to a foldable cart that can reduce the area occupied by the cart during storage by lifting the wall upward and fixing it between two side walls.

In general, carts can be used widely by residents in a variety of situations. Among them, foldable carts are more popular because they can be unfolded or folded. When not in use, the box can be folded to save space and make it easier to push or carry.

The folding cart, whose Chinese utility model registration notice number is “CN204871104U”, consists of a hand push rod, a top rack, a front support rod, and a rear support rod. When storing the cart, this folding cart creates a folding effect by pulling the hand push rod to the top rack by hand, attaching the top rack and the hand push rod, and bringing the front support rod closer to the rear support rod.

The folding cart, whose Chinese utility model registration notice number is “CN204586959U,” has a centerline hinge connection structure where the right and left walls of the basket are folded by pressing inward along the vertical centerline. When not in use, simply press the right and left walls of the basket inward to fold it inward, and the entire basket is folded into a rectangular plate-shaped structure and secured with a locking device.

The folding cart, whose Chinese utility model registration notice number is “CN201646803U”, consists of a frame, wheels and a basket. The frame consists of a foldable cross bracket with symmetry on four sides, a connector, and a pull rod. Among these, the foldable cross brackets on four sides are connected by connectors to form a rectangular three-dimensional bracket shape that can be folded or unfolded. do. The basket is fixed around a rectangular three-dimensional bracket and can be folded or unfolded together with the frame.

These existing foldable carts have a complicated folding structure, making it difficult for users to operate them easily, or the folded and unfolded states are not sufficiently stable.

Chinese utility model registration notice CN204871104U Chinese utility model registration notice CN204586959U Chinese utility model registration notice CN201646803U

This invention was created to solve the conventional problems as described above. It is a folding cart and matches the slider and the combined slide to switch the folded or unfolded state of the folding plate, so the folded and unfolded state of the cart box is more stable and operates. The purpose is to provide a folding cart with an improved form to make it more convenient to use.

However, the purpose of the present invention is not limited to this, and of course, even if not explicitly mentioned, purposes or effects that can be understood from the means of solving the problem or the embodiment are also included.

The folding cart of the present invention to achieve the above purpose consists of a box and moving wheels on the box support, and the box consists of four side plates and one support plate. It has the characteristic that the four side plates have a pair of folding plates and a fixed plate.

The folding plate rotates the first side plate and the second side plate with each other, and is configured with a limiting means to limit the rotation of the first side plate and the second side plate. The first side plate and the second side plate are rotated and folded and then positioned between the fixing plates.

The limiting means consists of a combined slide and a slider.

The combined slide includes a first slide mounted on the inner wall of the first side plate and a second slide mounted on the inner wall of the second side plate.

In the first state, when the slider is completely separated from the first slide or the second slide, the first side plate and the second side plate can be folded against each other.

In the second state, the slider is in the first slide and the second slide at the same time and the slider is constrained so that the first side plate and the second side plate are in the same plane when unfolded.

Preferably, a positioning structure is provided between the combination slide and the slider so that the positioning structure places the slider in the first or second state.

In addition, the positioning part is configured to protrude a first positioning part and a second positioning part at a predetermined distance apart from the inner wall of the folding plate on the side of the coupled slide, and an elastic part is formed at an end of the slider.

When the elastic portion of the slider is positioned in the first positioning portion, the slider is placed in the first state.

When the elastic portion of the slider is positioned in the second positioning portion, the slider is placed in the second state.

The elastic portion of the slider has a convex protruding structure capable of elastic deformation.

The combined slide is placed on top of the inner wall of the folding plate.

The first slide is integrated with the internal cavity of the first frame on the inner wall of the first side plate, one end of the first frame is closed and the other end of the first frame is open.

The second slide is integrated with the cavity inside the second frame of the inner wall of the second side plate, and both ends of the second frame are open.

In the first state, the slider is located in the cavity inside the second frame.

In the second state, a portion of the slider enters the cavity inside the first frame at the second open portion of the second frame.

Preferably, a handle is installed on the slider so that it protrudes from the combined slide.

Additionally, an arch-shaped notch is made on one side of the handle.

An upper limit fixture is installed behind the elastic part, and a lower limit fixture is installed at a certain distance behind the first positioning part. The lower limit fixture is located outside the upper limit fixture.

A fixing assembly is installed between two fixing plates, and the fixing assembly includes an arch-shaped buckle plate that is rotatably connected to the first fixing plate and a buckle mounted on the second fixing plate, and the buckle is fixed in a notch of the arch-shaped buckle plate. Complete the lock.

According to the above, the advantage of the present invention over the prior art is that the combination slide is mounted on a folding plate created by the rotational connection of the first side plate and the second side plate, and the slider moves left and right within the combination slide. When the slider is completely out of the first slide of the first side plate or the second slide of the second side plate, the first side plate and the second side plate may be folded against each other. When the slider passes through the first slide and the second slide at the same time, the rotation of the first side plate and the second side plate is restricted by the slider and maintained in an unfolded state. This rotation limit structure enables faster and more convenient operation and keeps the box more stable when unfolded or folded.

In addition, after the first side plate and the second side plate are rotated and folded, they are positioned between the two fixing plates, so that each part is positioned more rationally after the cart is folded and the space occupied by the cart after folding can be saved.

In addition, the various and beneficial advantages and effects of the present invention are not limited to the above-described content, and can be more easily understood in the process of explaining specific embodiments of the present invention.

Figure 1 is a schematic diagram of a foldable cart in an unfolded state according to an embodiment of the present invention.
Figure 2 is a schematic diagram of a folded cart in a folded state according to an embodiment of the present invention.
Figure 3 is a schematic diagram 1 of the unfolded state of the folding plate of the embodiment.
Figure 4 is a schematic diagram 2 of the unfolded state of the folding plate of the embodiment.
Figure 5 is a schematic diagram of the folding plate of the embodiment in a folded state.
Figure 6 is a cross-sectional view of the first state of the combined slide and slider.
Figure 7 is a cross-sectional view of the second state of the combined slide and slider.
Figure 8 is an overall structural diagram of the slider in the embodiment.
FIG. 9 is an enlarged view of a portion of the structure in A of FIG. 6.
FIG. 10 is an enlarged view of a portion of the structure in B of FIG. 7.

The above objectives, features and advantages of the present invention will be easily understood through the following preferred embodiments related to the attached drawings. However, those skilled in the art will be able to understand through the embodiments described later that the present invention is not limited to the embodiments described herein and can be embodied in other forms.

In describing specific embodiments below, various specific details have been written to explain the design in more detail and aid understanding. In addition, it is mentioned in advance that in describing the design, parts that are commonly known but largely unrelated to the design are not described to prevent confusion in explaining the present design.

The following is a preferred embodiment that explains the present invention in detail with reference to the drawings. Those skilled in the art will understand that these descriptions are for explanatory and illustrative purposes only and should not be construed as limiting the scope of protection of the present invention.

In the description of the present invention, the direction indications or positions such as “top”, “bottom”, “inside”, “outside”, etc. are based on the direction or position shown in the drawings and are only mentioned for the purpose of explaining and simply explaining the present invention. It does not specify or imply that the device or part used must be structured in a specific direction or work in a specific direction. Therefore, the scope of the present invention should not be limited.

Next, the present invention is further described in detail through the attached drawings and preferred embodiments. However, at this point, the skilled person will realize that this drawing was made only for the purpose of explaining the preferred embodiment, so it is limited to the scope of the present invention. In addition, except in cases where there is a separate indication, the drawings only conceptually show the composition or structure of the subject of explanation, so there may be exaggerated expressions and the drawings are not drawn according to a certain scale.

Hereinafter, a foldable cart 100 according to an embodiment of the present invention will be described with reference to the attached drawings.

Figures 1 and 2 are schematic diagrams of the unfolded and folded states of the foldable cart 100 according to an embodiment of the present invention.

The foldable cart 100 includes a box 10 and a moving wheel 20 configured to rotate on the bottom of the box 10. Among them, a flexible handle assembly 103 is mounted on the back of the box 10 to provide convenience for the user to push the cart.

In a preferred embodiment, the moving wheels 20 installed on the back of the bottom of the box 10 are configured so that the user can conveniently use the cart with less effort when pushing it.

A partition 104 is formed at the front of the bottom of the box 10, so that when the user places the cart on the road, the partition 104 makes the condition of the cart more stable and prevents the cart from rolling due to the moving wheels 20. prevent it from happening.

In addition, the vertical height of the partition 104 is configured to be equal to the distance from the bottom of the moving wheel 20 to the bottom of the box 10. In this case, the cart standing on the road can achieve a more stable balance. there is.

The embodiment mainly explains the folded structure of the folding plate 30, and details are as follows.

The box 10 of the folding cart 100 of the present invention has four side plates 101 and one bottom plate 102, and the four side plates 101 include a pair of folding plates 30 and a pair of folding plates 30. It includes a fixing plate 40.

Each of the pair of folding plates 30 includes a first side plate 31, a second side plate 32 rotatably connected to the first side plate 31, and a first side plate 31. It consists of a limiting means (50) that limits the rotation of the second side plate (32).

In addition, the first side plate 31 and one end of the fixing plate 40 are rotatably connected, and the second side plate 32 and the other end of the fixing plate 40 are rotatably connected.

The first side plate 31 and the second side plate 32 are configured to be rotated and folded and then positioned between the fixing plates 40 on both sides (see Figure 2).

In more detail, the limiting means 50 includes a combination slide h and a slider 51.

The combined slide (h) includes a first slide (h1) mounted on the inner wall of the first side plate (31) and a second slide (h2) mounted on the inner wall of the second side plate (32).

In the first state, when the slider 51 is completely separated from the first slide (h1) or the second slide (h2), the first side plate 31 and the second side plate 32 can be folded against each other. That is, when the slider 51 is in the first position where it is completely separated from the first slide (h1) or the second slide (h2), the first side plate 31 and the second side plate 32 are folded into each other. It becomes possible.

The combination slide (h) is located inside the folding plate 30 and cannot be seen from the outside, making the cart look neat.

In the second state, the slider 51 is located on the first slide (h1) and the second slide (h2) at the same time, and the slider 51 is positioned with the first side plate 31 and the second side plate 32 unfolded. It ensures that they are on the same plane. That is, when the slider 51 is in the second position located on both the first slide (h1) and the second slide (h2), the first side plate 31 and the second side plate 32 are unfolded. This ensures that they are on the same plane.

In other words, with the first side plate 31 and the second side plate 32 unfolded, if the slider 51 is located on both the first slide (h1) and the second slide (h2), the slider 51 This limits the mutual rotation of the first side plate 31 and the second side plate 32, so that the first side plate 31 and the second side plate 32 maintain an unfolded, flat state.

The advantage of the present invention is that the first side plate 31 and the second side plate 32 are connected while rotating, and a coupling slide (h) is formed on the folding plate (30), and the slider (51) is connected to the coupling slide (h). It is configured to move left and right inside. When the slider 51 is completely separated from the first slide h1 of the first side plate 31, the first side plate 31 and the second side plate 32 can be folded against each other. Of course, if the slider 51 continues to move to one side and leaves the second slide (h2), the two side plates 31 and 32 may also be folded against each other.

When the slider 51 passes through the first slide h1 and the second slide h2 at the same time, the first side plate 31 and the second side plate 32 are limited to an unfolded state by the slider 51.

The operation of the above-described limiting structure is faster and more convenient, and the state of the box after unfolding or folding is more stable.

After folding, the first side plate 31 and the second side plate 32 are rotated and folded and positioned between the two fixing plates 40, so that each part is positioned more rationally after the cart is folded and the space occupied by the cart after folding is also reduced. You can save.

Furthermore, the positioning structure for the slider 51 in the embodiment is specifically as follows. A positioning unit 60 is formed between the combined slide (h) and the slider 51, and the positioning unit 60 maintains the slider 51 in the first or second state.

Specifically, the positioning unit 60 includes a first positioning unit 61 spaced apart at a predetermined distance on the side of the coupling slide (h) on the inner wall of the folding plate 30, that is, on the inner wall of the second side plate 32. The second positioning portion 62 is configured to protrude, and an elastic portion 63 is configured at the end of the slider 51.

As shown in FIGS. 6 and 9, when the elastic portion 63 of the slider 51 is positioned in the first positioning portion 61, the slider 51 is placed in the first state. That is, the slider 51 is completely separated from the first slide (h1) or the second slide (h2), so that the first side plate 31 and the second side plate 32 can be folded against each other.

When the elastic part 63 of the slider 51 is located at the rear end of the first positioning unit 61, even if the slider 51 unexpectedly tries to advance when random shock or vibration occurs, the elastic part 63 remains in contact with the first positioning unit 61. It is caught in (61) and is restricted from moving forward, maintaining the slider (51) in the first state. However, when the user forcibly pushes the slider 51 forward, the elastic part 63 can go over the first positioning part 61, making it possible to move the slider 51 to the second state.

7 and 10, when the elastic portion 63 of the slider 51 is positioned in the second positioning portion 62, the slider 51 is placed in the second state. That is, when the slider 51 is placed in the first slide (h1) and the second slide (h2) at the same time, the slider 51 lies on the same plane with the first side plate 31 and the second side plate 32 unfolded. It keeps it that way.

When the second positioning unit 62 is located inside the elastic part 63 of the slider 51, even if the slider 51 unexpectedly tries to move backwards when random shock or vibration occurs, the elastic part 63 remains in contact with the second positioning unit 62. The slider 51 is kept in the second state because it is caught and movement is restricted without moving backwards. However, when the user forcibly pushes the slider 51 back, the elastic part 63 can go over the second positioning unit 62, making it possible to move the slider 51 to the first state.

The two positioning units 61 and 62 each restrict the slider 51 at two different positions to maintain a more stable state in the unfolded or folded state of the cart of the embodiment, and to prevent the slider 51 from moving unexpectedly in an unstable state. prevent it from becoming

The elastic portion 63 of the slider 51 has a deformable protruding structure formed in a “ㄷ” shape with the lower side open. The engagement slide (h) is located on the top of the inner wall of the folding plate (30). The slider (51) and the combined slide (h) are located at the top of the inner wall of the folding plate (30) and serve to hide the structure to prevent the slider (51) from being pressed or damaged, while the box (10) has a more attractive appearance. It is clean and does not cause any inconvenience to the user’s operation.

As shown in FIGS. 6, 7, 9, and 10, the second slide (h1) is located inside the first frame (f1) of the inner wall of the first side plate (31). It is merged with the cavity (internal space), and one end (a1) of the first frame (f1) is closed and the other end (a2) of the first frame (f1) is open.

The second slide h2 is integrated with the internal cavity (inner space) of the second frame f2 on the inner wall of the second side plate 32, and both ends of the second frame f2 are open. That is, both the first open side (b1) and the second open side (b2) are in an open state.

In the first state, the slider 51 is located in the internal cavity (internal space) of the second frame f2, and the first side plate 31 and the second side plate 32 can rotate and fold with each other.

In the second state, a part of the slider 51 enters the internal cavity of the first frame f1 at the second open other side b2 of the second frame f2 and the slider 51 is connected to the first side plate 31. and the second side plate 32 is limited to the unfolded state.

Preferably, as shown in FIG. 8, the slider 51 is provided with a handle 52 protruding from the coupling slide h, and the handle 52 facilitates the user to move the slider 51.

Going one step further, an arched notch (v) is formed on one side of the handle (52). The arched end of the front wall of the slider 51 is tilted inward at a certain angle to form a depressed area, and this depressed area is the arched notch (v). The arcuate notch (v) allows the user to move the slider (51) more easily by inserting the finger into the arcuate notch (v).

In addition, as shown in FIG. 9, an upper limit fixture (t1) is formed behind the elastic part 63, and a lower limit fixture (t2) is installed at a certain distance away from the rear of the first positioning unit (61).

When the slider 51 moves a certain distance toward the second slide h2, the lower limit fixture t2 limits the outside of the upper limit fixture t1. That is, when the slider 51 moves a certain distance toward the second slide h2, the upper and lower fixtures t1 are caught by the lower limit fixture t2 to prevent the slider 51 from moving further.

In this way, by matching the upper limit fixture (t1) and the lower limit fixture (t2), the maximum distance that the slider 51 moves to the second slide (h2) is limited to prevent the slider 51 from being separated from the coupling slide (h). .

Preferably, the fixing assembly is mounted between two fixing plates 40 as shown in FIGS. 1 and 2. The fixing assembly includes an arch-shaped buckle plate 71 rotatably connected to the first fixing plate 41 and a buckle 72 mounted on the second fixing plate 42, and the buckle is formed in a notch (71) of the arch-shaped buckle plate 71. Complete the locking by fastening it to the notch.

In the present invention, a coupling slide (h) is mounted on a folding plate (30) made by rotating the first side plate (31) and the second side plate (32), and the slider (51) is connected to the coupling slide (h). It is configured to move left and right inside. When the slider 51 completely leaves the first slide h1 of the first side plate 31, the first side plate 31 and the second side plate 32 may be folded against each other. Of course, if the slider 51 continues to move to one side and leaves the second slide h2, the two side plates 31 and 32 may also be folded against each other.

When the slider 51 is inserted through the first slide h1 and the second slide h2 at the same time, the first side plate 31 and the second side plate 32 are limited to the unfolded state by the slider 51. do. The operation of the above-described limiting structure is faster and more convenient, and the state of the box after unfolding or folding is more stable.

After the first side plate 31 and the second side plate 32 are rotated and folded, they are positioned between the two fixing plates 40, so that each part is positioned more rationally after the cart is folded and the space occupied by the cart after folding is also saved. You can.

In addition, the slider 51 and the combined slide (h) are located at the top of the inner wall of the folding plate (30). The slider (51) and the combined slide (h) are located at the top of the inner wall of the folding plate (30) and serve to hide the structure to prevent the slider (51) from being pressed or damaged, while the box (10) has a more attractive appearance. It is clean.

Above, we have provided a detailed introduction to the cart that can climb stairs provided by this utility model. In this explanation, the principles and implementation methods of this utility model are explained through specific examples. The description of the above embodiments is only intended to help you understand this utility model and its core reasons. A general engineer in this technical field may make improvements and modifications to this utility model under the premise that they do not deviate from the principles of this utility model, and such improvements and modifications also fall within the scope of protection of the claims of this utility model.

10...box
20...wheels
30...Folding plate
40...fixing plate
31...First side plate
32...2nd side plate
50...Restrictions
51...Slider
52...Handle
60...Positioning unit
61...1st positioning unit
62...2nd positioning unit
63...elastic part
71...Buckle plate
72...buckle
h...combined slide
h1...Slide 1
h2...2nd slide
f1...1st frame
f2... second frame
101...Four side plates
102...Bottom plate
103...Handle assembly
104...Partition

Claims (10)

Includes moving wheels on the box and the bottom of the box,
The box includes four side plates and one bottom plate,
The four side plates include a pair of folding plates and a fixed plate,
The folding plate includes a first side plate, a second side plate rotatably configured to the first side plate, and limiting means for limiting rotation of the first side plate and the second side plate,
The limiting means consists of a combined slide and a slider,
The combined slide includes a first slide mounted on the inner wall of the first side plate and a second slide mounted on the inner wall of the second side plate,
In the first state, when the slider is completely separated from the first slide or the second slide, the first side plate and the second side plate can be folded against each other,
In the second state, when the slider is in the first slide and the second slide at the same time, the first side plate and the second side plate are limited to an unfolded state by the slider.
According to claim 1,
A folding cart, characterized in that a positioning part is configured between the combination slide and the slider, and the positioning part maintains the slider in the first state or the second state.
According to claim 2,
The positioning unit is configured to protrude a first positioning unit and a second positioning unit at a predetermined distance apart from the inner wall of the folding plate to the side of the coupling slide, and an elastic portion is configured at an end of the slider,
When the elastic portion of the slider is located in the first positioning portion, the slider is placed in the first state,
A foldable cart, wherein when the elastic portion of the slider is positioned in the second positioning portion, the slider is placed in the second state.
According to claim 3,
A foldable cart, characterized in that the elastic portion of the slider is made of a deformable protruding structure.
According to claim 1,
A foldable cart, characterized in that the coupling slide is configured to be located on the top of the inner wall of the folding plate.
According to claim 1,
the first slide is integrated with the first frame internal cavity of the inner wall of the first side plate, one side of the first frame is closed and the other side of the first frame is open,
the second slide is configured to be integrated with the second frame inner cavity of the second side plate inner wall and both sides of the second frame are open,
In the first state, the slider is configured to be located in the cavity inside the second frame,
A foldable cart, characterized in that in the second state, a portion of the slider is configured to be positioned into an internal cavity of the first frame at an open side of the second frame.
According to claim 1,
A foldable cart, characterized in that the slider has a handle configured to protrude from the combined slide.
According to claim 7,
A folding cart, characterized in that an arch-shaped notch is formed on one side of the handle.
According to claim 1,
An upper limit fixture is installed behind the elastic portion, and a lower limit fixture is installed at a certain distance from the rear of the first positioning unit, and the lower limit fixture is configured to limit the outside of the upper limit fixture.
The method of claim 1, wherein a fixing assembly is mounted between the pair of fixing plates, and the fixing assembly includes an arch-shaped buckle plate rotatably connected to one of the pair of fixing plates and a buckle mounted on the other of the pair of fixing plates. A foldable cart, wherein the buckle is configured to be locked by being fixed to a notch of the arch-shaped buckle plate.