Opening and closing structure of rear side frame of cart and cart with opening and closing structure

Abstract

The utility model relates to the technical field of trolleys, and discloses a trolley rear side frame opening and closing structure and a trolley with the structure, the trolley rear side frame opening and closing structure comprises a rear side frame arranged on one side of a trolley body and an opening and closing mechanism arranged between the rear side frame and the trolley body and used for longitudinal opening and closing of the rear side frame, and the opening and closing mechanism comprises strip-shaped connecting pieces arranged on the two sides of the trolley body respectively. One end of each connecting piece is pivoted to the side face of the cart body, the rotating plane of each connecting piece is vertically arranged, the other end of each connecting piece is vertically fixed to the end, close to the opening and closing mechanism, of the rear side frame, and abutting pieces are arranged at the positions, close to the rear side frame, of the opposite faces of the two connecting pieces. When the rear side frame on the vehicle body is overturned to the horizontal state, the abutting pieces located on the opposite faces of the two connecting pieces can replace supporting pieces in the prior art, so that the rear side frame is kept in the horizontal state, and the risk of accidentally injuring the human body does not exist; the rear end of the cart body can be opened and closed by opening and closing the rear side frame, so that goods can be conveniently transferred and unloaded.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to an opening and closing structure of a rear side frame of a trolley. Background Art

[0002] A cart equipped with an openable rear side frame can facilitate loading and unloading of goods. Specifically, when the rear side frame is flipped to a vertical state, it can close the rear end of the vehicle body, otherwise the goods on the vehicle body will fall off. Conversely, when the rear side frame is flipped to a horizontal state, it can form an extension plate under the rear end of the vehicle body, making it convenient for users to drag the goods on the vehicle body off the vehicle.

[0003] The rear side frame of a conventional stroller is pivotally connected to the rear end of the stroller body by a hinge so as to be opened and closed. In order to ensure the horizontal stability of the rear side frame when it is opened, a horizontally protruding support member is usually provided under the hinge. When the rear side frame is opened, the support member can abut against the lower surface of the rear side frame, thereby maintaining the horizontal state of the rear side frame.

[0004] However, in actual use, the protruding support parts can easily injure the user's legs by mistake, posing a safety hazard, and therefore need to be improved. Utility Model Content

[0005] The first purpose of the utility model is to provide a cart rear side frame opening and closing structure, which can realize the horizontal positioning of the rear side frame without horizontally protruding support members, so as to prevent the support members from accidentally injuring the user's legs, thereby improving safety.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A rear side frame opening and closing structure of a cart, comprising a rear side frame arranged on one side of a cart body, and an opening and closing mechanism arranged between the rear side frame and the cart body for longitudinal opening and closing of the rear side frame, the opening and closing mechanism comprising two long strip connecting members arranged on both sides of the cart body, one end of the connecting member being pivotally connected to the side of the cart body and having a rotating plane arranged vertically, the other end of the connecting member being vertically fixed to one end of the rear side frame close to the opening and closing mechanism, and abutting members being arranged on opposite surfaces of the two connecting members and at positions close to the rear side frame;

[0008] When the rear side frame flips to a horizontal state, the connecting member flips to a vertical state accordingly, and the abutting member abuts against the side surface of the vehicle body between the two connecting members, thereby maintaining the horizontal state of the rear side frame.

[0009] With the above solution, when the rear side frame on the cart body is longitudinally flipped to a horizontal state, the connecting pieces arranged on both sides of the cart body can be flipped to a vertical state accordingly, and drive the abutting pieces to abut against the side walls of the cart body. At this time, the side walls of the cart body form a reaction force on the abutting pieces, so that the connecting pieces are maintained in a vertical state, thereby maintaining the horizontal state of the rear side frame. Since the abutting pieces are hidden in the opposite surfaces of the two connecting pieces and do not protrude from the side walls of the cart body, they will not hurt the human body, thereby improving safety.

[0010] Preferably, the abutment member is the end surface of the rear side frame close to the opening and closing mechanism. When the rear side frame is flipped to a horizontal state, the connecting member is flipped to a vertical state, and the end surface of the rear side frame close to the opening and closing mechanism abuts against the side of the vehicle body between the two connecting members.

[0011] By adopting the above scheme, by using the end surface of the rear side frame close to the opening and closing mechanism as a supporting member, the structure of the opening and closing mechanism can be simplified and the production cost can be reduced, and the stress of the supporting member acting on the side of the vehicle body will not be too concentrated, so as to prevent the supporting member from damaging the surface of the vehicle body, thereby extending the service life of the cart.

[0012] Preferably, the movable end of the connecting piece vertically extends to have a connecting piece that fits and is fixed to the side surface of the rear side frame.

[0013] By adopting the above solution, the connecting piece fixed to the side surface of the rear side frame can increase the contact area between the connecting piece and the rear side frame, thereby improving the connection stability between the two.

[0014] Preferably, the connector is fixed to the side surface of the rear side frame by rivets.

[0015] By adopting the above solution, the rivets can further improve the connection stability between the connecting member and the rear side frame.

[0016] Preferably, the rear side frame includes two vertical poles respectively fixed to two connecting members and a cross bar connected between the two vertical poles.

[0017] By adopting the above scheme, the cooperation of the cross bar and the two vertical bars can not only improve the overall strength of the rear side frame, but also reduce the material used in the rear side frame, reduce the cost, and at the same time reduce the weight of the rear side frame.

[0018] The second object of the utility model is to provide a cart with the above-mentioned rear side frame opening and closing structure, which can not only realize the stable opening and closing of the rear side frame, but also ensure the stability of the rear side frame in a horizontal state, and at the same time avoid the user from being injured due to the horizontal positioning support, thereby improving safety.

[0019] The above technical objectives of the utility model are achieved through the following technical solutions:

[0020] A cart with a rear side frame opening and closing structure, wherein the opening and closing mechanism is arranged between the rear side of a cart body and the bottom of the rear side frame; when the rear side frame is flipped to a horizontal state, the rear end of the cart body is opened; conversely, when the rear side frame is flipped to a vertical state, the rear side frame closes the rear end of the cart body.

[0021] By adopting the above solution, the rear end of the cart body can be opened and closed by opening and closing the rear side frame, so as to facilitate the loading and unloading of goods. At the same time, the opening and closing mechanism can not only ensure the stability of the rear side frame when it is horizontal, but also avoid accidental injury to the user's legs, thereby improving safety.

[0022] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0023] 1. When the rear side frame on the vehicle body is flipped to a horizontal state, the abutment members located on the opposite surfaces of the two connecting members can replace the supporting members in the prior art, so that the rear side frame is maintained in a horizontal state, and there is no risk of accidental injury to the human body;

[0024] 2. By opening and closing the rear side frame, the rear end of the cart body can be opened and closed to facilitate the loading and unloading of goods. At the same time, the opening and closing mechanism can not only ensure the stability of the rear side frame when it is horizontal, but also avoid accidental injury to the user's legs, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure when the rear side frame is closed in this embodiment;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of section A is shown;

[0027] Figure 3 This is a schematic diagram of the structure when the rear side frame is opened in this embodiment;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of portion B is shown;

[0029] Figure 5 for Figure 3 An enlarged schematic diagram of section C is shown.

[0030] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Vehicle body; 2. Rear side frame; 3. Opening and closing mechanism; 4. Connecting part; 5. Abutment part; 6. Connecting part; 7. Rivet; 8. Vertical pole; 9. Cross bar; 10. Mother-and-child nail; 11. Positioning clamp. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1

[0033] like Figures 1 to 4 As shown, the embodiment discloses a rear side frame opening and closing structure of a cart, comprising a rear side frame 2 arranged on one side of a cart body 1, and an opening and closing mechanism 3 arranged between the rear side frame 2 and the body 1 for longitudinal opening and closing of the rear side frame 2. Specifically, the opening and closing mechanism 3 comprises two long strip-shaped connecting members 4 arranged on both sides of the body 1, the connecting member 4 is in the form of a sheet, one end of which is pivotally connected to the side of the body 1 through a pin 10 and the rotation plane is arranged vertically, and the other end is vertically fixed to one end of the rear side frame 2 close to the opening and closing mechanism 3, and abutting members 5 are arranged on the opposite surfaces of the two connecting members 4 and at a position close to the rear side frame 2. In the embodiment, when the rear side frame 2 is flipped to a horizontal state, the connecting member 4 is flipped to a vertical state accordingly, and the abutting member 5 is abutted against the side of the body 1 located between the two connecting members 4, thereby maintaining the horizontal state of the rear side frame 2.

[0034] In order to simplify the structure and reduce stress concentration on the abutment member 5, the abutment member 5 is the end surface of the rear side frame 2 close to the opening and closing mechanism 3. When the rear side frame 2 is flipped to a horizontal state, the connecting member 4 is flipped to a vertical state, and the end surface of the rear side frame 2 close to the opening and closing mechanism 3 is abutted against the side of the vehicle body 1 located between the two connecting members 4.

[0035] In order to improve the connection stability between the connecting member 4 and the rear side frame 2, a connecting member 6 is vertically extended from the movable end of the connecting member 4 and is fixed to the side of the rear side frame 2. The connecting member 6 is a long sheet structure and is arranged along the length direction of the rear side frame 2. Each connecting member 6 is fixed to the side of the rear side frame 2 by two rivets 7 to improve the connection stability between the connecting member 6 and the rear side frame 2.

[0036] In order to ensure the overall strength of the rear side frame 2 and reduce its own weight, the rear side frame 2 includes two vertical rods 8 respectively fixed to the two connecting members 4 and a cross bar 9 fixedly connected between the two vertical rods 8. Specifically, the two connecting members 6 are respectively fixed to the outer sides of the two vertical rods 8 by rivets 7, and each connecting member 6 is arranged along the length direction of the vertical rod 8. At this time, the abutting member 5 is the end face of the vertical rod 8 close to the opening and closing mechanism 3.

[0037] Embodiment 2

[0038] like Figure 5 As shown, based on the first embodiment, this embodiment discloses a cart having the above-mentioned rear side frame opening and closing structure, and the opening and closing mechanism 3 is arranged between the rear side of the vehicle body 1 and the bottom of the rear side frame 2. In this embodiment, when the rear side frame 2 is flipped to a horizontal state, the rear end of the vehicle body 1 is opened. Conversely, when the rear side frame 2 is flipped to a vertical state, the rear side frame 2 closes the rear end of the vehicle body 1.

[0039] In order to maintain the rear side frame 2 in a vertical state, elastic positioning clamps 11 for clamping the two vertical poles 8 are provided on both sides of the rear end of the vehicle body 1 .

[0040] The following is an explanation of the use principle in combination with Embodiment 1 and Embodiment 2:

[0041] When loading and unloading goods, the upper end of the rear side frame 2 is first pulled outward to overcome the elastic clamping force of the positioning clamp 11 and drive the two vertical rods 8 to separate from the corresponding positioning clamp 11. Then, the entire rear side frame 2 is flipped down to a horizontal state. At this time, the end surface of the vertical rod 8 close to the opening and closing mechanism 3 abuts against the side wall of the vehicle body 1, and the horizontal positioning of the rear side frame 2 can be completed. In this state, the user can use the horizontal rear side frame 2 to load and unload goods, which is more labor-saving.

[0042] After the cargo loading and unloading is completed, the rear side frame 2 is flipped upward to a vertical state again until the two uprights 8 are respectively engaged in the two positioning clips 11, and the rear side frame 2 can be closed. At this time, since the abutment member 5 is located on the opposite side of the two connecting members 4, it will not accidentally hurt the human body, which is safer.

Claims

1. A rear side frame opening and closing structure of a cart, comprising a rear side frame (2) arranged on one side of a cart body (1), and an opening and closing mechanism (3) arranged between the rear side frame (2) and the cart body (1) for longitudinally opening and closing the rear side frame (2), characterized in that: The opening and closing mechanism (3) comprises two long strip connecting members (4) respectively arranged on both sides of the vehicle body (1), one end of the connecting member (4) is pivotally connected to the side of the vehicle body (1) and the rotation plane is arranged vertically, the other end of the connecting member (4) is vertically fixed to one end of the rear side frame (2) close to the opening and closing mechanism (3), and abutting members (5) are arranged on the opposite surfaces of the two connecting members (4) and at a position close to the rear side frame (2); When the rear side frame (2) is flipped to a horizontal state, the connecting member (4) is flipped to a vertical state, and the abutting member (5) abuts against the side surface of the vehicle body (1) between the two connecting members (4), thereby maintaining the horizontal state of the rear side frame (2).

2. The rear side frame opening and closing structure of the stroller according to claim 1, characterized in that: The abutment member (5) is an end surface of the rear side frame (2) close to the opening and closing mechanism (3). When the rear side frame (2) is flipped to a horizontal state, the connecting member (4) is flipped to a vertical state, and the end surface of the rear side frame (2) close to the opening and closing mechanism (3) is abutted against the side surface of the vehicle body (1) located between the two connecting members (4).

3. The rear side frame opening and closing structure of the stroller according to claim 1, characterized in that: A connecting piece (6) is vertically extended from the movable end of the connecting piece (4) and is fitted and fixed to the side surface of the rear side frame (2).

4. The rear side frame opening and closing structure of the stroller according to claim 3, characterized in that: The connecting piece (6) is fixed to the side surface of the rear side frame (2) through rivets (7).

5. The rear side frame opening and closing structure of the stroller according to claim 1, 2, 3 or 4, characterized in that: The rear side frame (2) comprises two vertical poles (8) respectively fixed to two connecting members (4) and a horizontal pole (9) connected between the two vertical poles (8).

6. A cart, comprising the rear side frame opening and closing structure according to any one of claims 1 to 5, characterized in that: The opening and closing mechanism (3) is arranged between the rear side of the vehicle body (1) and the bottom of the rear side frame (2); when the rear side frame (2) is flipped to a horizontal state, the rear end of the vehicle body (1) is opened; conversely, when the rear side frame (2) is flipped to a vertical state, the rear side frame (2) closes the rear end of the vehicle body (1).

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