Semi-automatic folding cart

Abstract

The utility model provides a semi-automatic folding cart which comprises a front supporting rod, a sliding push rod, a rear supporting rod, a spring, a connecting rod and a handle rod. Front wheels are arranged at the lower ends of the front supporting rods, and long holes are formed in the lower sides of the front supporting rods respectively. A lug plate is arranged on the lower side of the lower end of the sliding push rod, the sliding push rod slidably sleeves the inner side of the front supporting rod, the lug plate downwards extends out of the long hole, and a check block is further arranged on the inner side of the middle of the sliding push rod; rear wheels are arranged at the lower ends of the rear supporting rods respectively, and the upper ends of the rear supporting rods are hinged to the lug plates; the spring is sleeved with the lower end of the front supporting rod, and the upper portion of the spring abuts against the check block. The upper end of the connecting rod is hinged to the lower side of the upper end of the front supporting rod. The lower end of the connecting rod is hinged to the middle of the rear supporting rod. The handle rod is connected between the upper ends of the two sliding push rods.

Description

Technical Field

[0001] The utility model belongs to the field of household carts, and in particular relates to a semi-automatic folding cart. Background Art

[0002] Strollers are used to carry babies or pets at home or when going out, making it convenient for family members to carry and take care of babies or pets at any time. Foldable strollers are convenient for packaging, transportation and storage, and are favored by users. Existing foldable strollers mainly adopt a fully manual folding structure. The fully manual folding structure of the folding stroller has a complex folding and locking mechanism, which requires multiple buckle operations when unfolding and storing. The multiple buckle operations need to follow a fixed operation sequence, and different buckles have different sensitivities. The operation is sometimes ineffective and sometimes not, which is inconvenient to use. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a semi-automatic folding cart for overcoming the above problems or at least partially solving or alleviating the above problems.

[0004] The utility model provides a semi-automatic folding cart, comprising:

[0005] A pair of front support rods, the lower ends of the two front support rods are provided with front wheels, and the lower side of the middle part of each front support rod is provided with a long hole;

[0006] Two sliding push rods, each of which has an ear plate on the lower side of its lower end, the two sliding push rods are respectively slidably sleeved on the inner side of one of the front support rods, the ear plate extends downward out of the long hole, and a stopper is also fixed on the inner side of the middle part of each sliding push rod;

[0007] A pair of rear support rods, the lower ends of the two rear support rods are respectively provided with rear wheels, and the upper end of each rear support rod is respectively hinged to one of the ear plates;

[0008] A pair of springs, each of which is respectively sleeved inside the lower end of one of the front support rods, and the upper portion of each of the springs is pressed against the stopper;

[0009] A pair of connecting rods, wherein the upper end of each connecting rod is hinged to the lower side of the upper end of one of the front support rods, and the lower end of each connecting rod is hinged to the middle part of one of the rear support rods;

[0010] A handle bar is connected between the upper ends of the two sliding push rods.

[0011] The utility model also has the following optional features.

[0012] Optionally, the handle rod is in a U-shaped structure, and both ends of the handle rod are hinged to the upper ends of the two sliding push rods respectively.

[0013] Optionally, the handle rod is in a U-shaped structure, and the upper ends of the two sliding push rods are respectively provided with sockets, and the two ends of the handle rod are respectively slidably inserted into the sockets at the upper end of one of the sliding push rods.

[0014] Optionally, a pair of connecting members are further included, and the two connecting members are respectively arranged at the upper middle parts of the two front support rods for connecting the carrier.

[0015] Optionally, a guide rod is further provided in the front support rod, the spring is sleeved on the guide rod, a through hole is provided on the stopper, and the guide rod passes through the through hole.

[0016] The semi-automatic folding cart of the utility model mainly has the following beneficial effects:

[0017] The utility model slides a sliding push rod in the front support rod, and a spring and a stopper are arranged between the front support rod and the sliding push rod, and a long hole is arranged on the lower side of the front support rod, so that the ear plate connected to the sliding push rod extends out of the long hole, and the upper end of the rear support rod is hinged with the ear plate, and then a connecting rod is arranged between the upper end of the front support rod and the middle part of the rear support rod. Semi-automatic folding is achieved by pushing the sliding push rod into the front support rod to drive the rear support rod and the front support rod to swing downward, and at the same time, the spring is squeezed to store force, and there is no need to operate various buckles in sequence, which is convenient for storage; by lifting the handle rod upward to release the stored force of the spring, the spring extends the sliding push rod from the front support rod, and drives the rear support rod and the front support rod to swing upward to achieve semi-automatic unfolding of the cart, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the semi-automatic folding cart of the utility model in an unfolded state;

[0019] Figure 2 It is a structural schematic diagram of the semi-automatic folding cart of the utility model in a folded state;

[0020] Figure 3 yes Figure 1 Schematic diagram of the lower structure;

[0021] Figure 4 yes Figure 1 The internal structure diagram of the front support rod of the semi-automatic folding cart in the unfolded state;

[0022] Figure 5 yes Figure 2 A diagram showing the internal structure of the front support rod of the semi-automatic folding cart when it is in the folded state.

[0023] In the figure: 1, front support rod; 101, long hole; 2, front wheel; 3, sliding push rod; 301, ear plate; 4, stopper; 5, rear support rod; 501, ear plate; 6, rear wheel; 7, spring; 8, connecting rod; 9, handlebar; 10, connecting piece; 11, guide rod; 12, carrier.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0025] Example 1

[0026] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The embodiment of the utility model provides a semi-automatic folding cart, comprising: a pair of front support rods 1, two sliding push rods 3, a pair of rear support rods 5, a pair of springs 7, a pair of connecting rods 8 and a handle bar 9; the lower ends of the two front support rods 1 are provided with front wheels 2, and the lower side of each front support rod 1 is respectively provided with a long hole 101; the lower side of the middle part of the lower end of each sliding push rod 3 is respectively provided with an ear plate 301, and the two sliding push rods 3 are respectively slidably sleeved on the inner side of a front support rod 1, and the ear plate 301 extends downward from the long hole 101, each A stopper 4 is also fixed on the inner side of the middle part of the sliding push rod 3; rear wheels 6 are respectively provided at the lower ends of the two rear support rods 5, and the upper end of each rear support rod 5 is respectively hinged on an ear plate 301; each spring 7 is respectively sleeved inside the lower end of a front support rod 1, and the upper part of each spring 7 is against the stopper 4; the upper end of each connecting rod 8 is respectively hinged to the lower side of the upper end of a front support rod 1, and the lower end of each connecting rod 8 is respectively hinged to the middle part of a rear support rod 5; the handle bar 9 is connected between the upper ends of the two sliding push rods 3.

[0027] The front support rod 1, the sliding push rod 3, the connecting rod 8 and the rear support rod 5 form a tripod structure with a variable side. The front wheel 2 is arranged at the lower end of the front support rod 1, and the rear wheel 6 is arranged at the lower end of the rear support rod 5. The two front wheels 2 are universal wheels, and the two rear wheels 6 are fixed wheels. Braking mechanisms and power devices can be arranged on the rear wheels 6. By changing the length of the variable side formed by the front support rod 1 and the sliding push rod 3, the opening angle between the front support rod 1 and the rear support rod 5 can be controlled, so as to realize the unfolding and folding of the cart.

[0028] The sliding push rod 3 is slidably mounted in the front support rod 1, and the ear plate 301 at the front of the sliding push rod 3 extends downward from the long hole 101 on the lower side of the front support rod 1 and is hinged to the upper end of the rear support rod 5. The spring 7 is arranged inside the front support rod 1, and the upper part of the spring 7 is pressed against the stopper 4 in the sliding push rod 3.

[0029] When the cart needs to be folded, the two sliding push rods 3 are pushed forward by the handle rod 9. The sliding push rod 3 drives the stopper 4 to squeeze the spring 7 forward and enter the front support rod 1. At the same time, the ear plate 301 pulls the rear support rod 5 along the long hole 101 to swing downward relative to the connecting rod 8. At the same time, the rear support rod 5 also drives the front support rod 1 to swing downward toward the connecting rod 8. The handle rod 9 is continued to be pressed down to make the front support rod 1 and the rear support rod 5 swing to a parallel state. At this time, the spring 7 is in a thrust dead point state after compression, and the cart is maintained in a folded state, thereby realizing semi-automatic folding of the cart. There is no need to operate various buckles in sequence, which is convenient for storage and transportation.

[0030] When the cart needs to be automatically deployed, the handle bar 9 is lifted upwards to make the sliding push rod 3 and the front support rod 1 swing upwards and pass through the thrust dead point of the spring 7. The squeezed spring 7 releases the pressure and pushes the sliding push rod 3 to extend out of the front support rod 1 through the block 4. The ear plate 301 at the lower end of the sliding push rod 3 drives the rear support rod 5 to swing upwards along the long hole 101 relative to the connecting rod 8. At the same time, the rear support rod 5 also drives the front support rod 1 to swing upwards toward the connecting rod 8, thereby realizing the semi-automatic deployment of the cart.

[0031] Example 2

[0032] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 On the basis of Example 1, the handle bar 9 is in a U-shaped structure, and the two ends of the handle bar 9 are hinged to the upper ends of the two sliding push rods 3 respectively.

[0033] When storing, the handle bar 9 can be folded on the sliding push rod 3 to reduce the folded size.

[0034] Example 3

[0035] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 On the basis of Example 1, the handle bar 9 is in a U-shaped structure, and the upper ends of the two sliding push rods 3 are respectively provided with sockets, and the two ends of the handle bar 9 are respectively slidably inserted into the sockets at the upper end of a sliding push rod 3.

[0036] When folding, the two ends of the handle bar 9 can be pushed into the sockets of the sliding push rod 3 respectively to reduce the folded size. When unfolding, the handle bar 9 can be pulled out from the sockets of the sliding push rod 3.

[0037] Example 4

[0038] refer to Figure 1 , Figure 2 and Figure 3On the basis of Example 1, it further includes a pair of connecting members 10, and the two connecting members 10 are respectively arranged on the upper parts of the two front support rods 1.

[0039] The connector 10 may be a socket or a plug structure, and correspondingly, a carrier 12 such as a seat or a sleeping basket may be a plug or a socket structure, so that both sides of the carrier 12 can be detachably connected to the connector 10 .

[0040] Example 5

[0041] refer to Figure 4 and Figure 5 On the basis of embodiment 1, a guide rod 11 is further provided in the front support rod 1, the spring 7 is sleeved on the guide rod 11, a through hole is provided on the stopper 4, and the upper end of the guide rod 11 passes through the through hole.

[0042] When the spring 7 is sleeved on the guide rod 11, the spring 7 as a whole will not bend when compressed. When the stopper 4 compresses the spring 7, the through hole on the stopper 4 facilitates the upper end of the guide rod 11 to pass through, so that the guide rod 11 can be straightened.

[0043] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry, and are not described here one by one.

Claims

1. A semi-automatic folding cart, characterized in that: include: A pair of front support rods (1), the lower ends of the two front support rods (1) being provided with front wheels (2), and the lower side of the middle portion of each front support rod (1) being provided with a long hole (101); Two sliding push rods (3), each of which has an ear plate (301) disposed on the lower side of its lower end, the two sliding push rods (3) are respectively slidably mounted on the inner side of one of the front support rods (1), the ear plate (301) extends downwardly out of the long hole (101), and a stopper (4) is also fixed on the inner side of the middle portion of each sliding push rod (3); A pair of rear support rods (5), the lower ends of the two rear support rods (5) are respectively provided with rear wheels (6), and the upper end of each rear support rod (5) is respectively hinged to one of the ear plates (301); A pair of springs (7), each of the springs (7) being respectively sleeved inside the lower end of one of the front support rods (1), and the upper part of the spring (7) being pressed against the stopper (4); A pair of connecting rods (8), wherein the upper end of each connecting rod (8) is hinged to the lower side of the upper end of one of the front support rods (1), and the lower end of each connecting rod (8) is hinged to the middle part of one of the rear support rods (5); A handle bar (9) is connected between the upper ends of the two sliding push rods (3).

2. The semi-automatic folding cart according to claim 1, characterized in that: The handle bar (9) is in a U-shaped structure, and the two ends of the handle bar (9) are respectively hinged to the upper ends of the two sliding push rods (3).

3. The semi-automatic folding cart according to claim 1, characterized in that: The handle bar (9) is in a U-shaped structure, and the upper ends of the two sliding push rods (3) are respectively provided with sockets, and the two ends of the handle bar (9) are respectively slidably inserted into the sockets at the upper end of one of the sliding push rods (3).

4. The semi-automatic folding cart according to claim 1, characterized in that: It also comprises a pair of connecting members (10), wherein the two connecting members (10) are respectively arranged at the middle and upper parts of the two front support rods (1) and are used for connecting the carrier (12).

5. The semi-automatic folding cart according to claim 1, characterized in that: A guide rod (11) is also provided inside the front support rod (1), the spring (7) is sleeved on the guide rod (11), and a through hole is provided on the stopper (4), and the guide rod (11) passes through the through hole.

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