Trolley

Abstract

The utility model discloses a trolley, which belongs to the field of trolleys, solves the problem that a locking device in the prior art cannot be observed visually, and adopts the technical scheme that the trolley comprises a frame and a hopper, the hopper is arranged on a rack in a turnover manner, a locking hole is formed in the frame and behind the hopper, and the locking hole is arranged in the locking hole. A locking piece which keeps stretching into the locking hole and is matched with the locking hole to lock the car hopper so as to limit overturning of the car hopper is arranged behind the car hopper, and an unlocking assembly which is externally applied with force to move the locking piece out of the locking hole so as to unlock the car hopper is further arranged behind the car hopper. According to the utility model, closing and unlocking of the lock catch can be seen more visually, and maintenance and replacement are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of handcarts, and in particular to a handcart. Background Technology

[0002] Handcarts typically consist of a frame and a cargo box. The cargo box is mounted on the frame and can be tilted. When encountering bumps, the cargo box may sway up and down, or it may tip over due to misoperation, posing a safety hazard. To address this, existing technologies, such as the utility model CN204527250U, disclose a locking device between the cargo box and the frame. This locking device is located at the bottom of the cargo box, with one end of the locking tongue connected to a spring. The control handle controls the spring's extension and retraction via a cable. Because the locking device is located at the bottom of the cargo box, its closure is not readily visible, posing a safety hazard if not properly closed, and also hindering maintenance and replacement. Utility Model Content

[0003] The purpose of this invention is to provide a handcart that solves the problem that the locking device in the prior art cannot be observed intuitively, allowing for a more direct view of the locking and unlocking, and also facilitating maintenance and replacement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a handcart, comprising a frame and a cart body, wherein the cart body is rotatably mounted on the frame, a locking hole is provided on the frame at the rear of the cart body, a locking member is provided at the rear of the cart body to retain the extension into the locking hole and cooperate with the locking hole to lock the cart body and restrict the cart body from rotatating, and an unlocking component is also provided at the rear of the cart body to unlock the cart body by applying external force to move the locking member out of the locking hole.

[0005] By adopting the above technical solution, this utility model has the following advantages: First, the locking component is located at the rear of the truck bed and cooperates with the locking hole on the frame, placing the locking device in a more conspicuous position (rear of the truck bed) rather than hiding it at the bottom of the truck bed. The operator can directly determine whether the truck bed is locked by observing whether the locking component is inserted into the locking hole, avoiding potential safety hazards caused by the inability to confirm the locking status and improving the reliability of use. Second, the unlocking component is located at the rear of the truck bed, allowing the user to complete the unlocking operation without having to crawl to check the bottom of the truck bed, making the operation more convenient. Since the locking component, locking hole, and unlocking component are all located at the rear of the truck bed, compared to the existing locking devices located at the bottom of the truck bed, maintenance personnel can more easily access these components during maintenance or replacement. There is no need for complex disassembly of the bottom of the truck bed or operation in confined spaces, reducing the difficulty of maintenance.

[0006] Furthermore, a handrail is provided at the rear of the frame, and an installation space is provided between the handrail and the truck bed. The installation space is open on both sides. The locking member is closer to the center of the frame than the locking hole, and the locking member is inserted into the locking hole from the center of the frame to the left or right.

[0007] By adopting the aforementioned technical solution, since the handrail is located at the rear of the frame and the installation space is open on both sides, the locking component is inserted into the locking hole from the center of the frame to the left or right, making the locking status more obvious. Users can more easily judge whether the locking component is correctly inserted into the locking hole, effectively avoiding the possibility of the locking component being obstructed by other structures, thereby ensuring that the truck bed is in a safe locked state, improving the safety of use, and further reducing the safety hazards caused by incomplete locking.

[0008] Furthermore, the upper surface of the frame is provided with an upwardly protruding locking part, and the locking part is provided with the locking hole; or, it also includes a fixing plate with the locking hole, the fixing plate being detachably connected to the upper surface of the frame.

[0009] Using the aforementioned technical solution, the raised design makes the locking hole relatively high, making it easier to observe the locking status; or, with a detachable fixing plate, when maintenance or replacement of the locking components is required, the fixing plate can be simply removed without complicated processing of the entire frame.

[0010] Furthermore, the locking member is rotatably mounted on the truck bed, and the locking member has a locking position relative to the truck bed where it is rotatably engaged with the locking hole and an unlocking position where it is rotatably unlocked from the locking hole.

[0011] Through the above technical solution, the rotational fastening method between the locking component and the locking hole can provide a more stable connection, effectively resist external forces from all directions, reduce the risk of loosening, and ensure the stability of the truck bed during transportation as much as possible.

[0012] Furthermore, an elastic element is provided between the locking member and the truck bed, and the elastic element applies a force to the locking member to move it toward the locking position.

[0013] With the above technical solution, since the elastic element always applies a force to the locking element toward the locking position, the possibility of the locking element accidentally disengaging from the locking position due to external factors (such as slight collisions) is reduced, thereby enhancing the safety of the system. Users only need to overcome the resistance provided by the elastic element to move the locking element to the unlocked position. Once released, the locking element will automatically return to the locking position under the action of the elastic element, without the need for additional manual reset steps, simplifying the user's operation process.

[0014] Furthermore, the truck bed is provided with limiting posts on both sides of the rotation point of the locking member. When the locking member is in the locked position, the locking member and the limiting posts are spaced apart. When the locking member is in the unlocked position, the locking member and the limiting posts abut against each other to limit the maximum rotation angle of the locking member.

[0015] Through the above technical solution, when the locking component moves from the locked position to the unlocked position and contacts the limiting post, the user can obtain clear operational feedback through touch or sound, knowing that the locking component has reached its limit position and completed the unlocking action. This helps improve the accuracy and efficiency of operation. The limiting post limits the maximum rotation angle of the locking component, and can also minimize mechanical damage or functional failure caused by excessive rotation of the locking component.

[0016] Furthermore, the unlocking component includes a tipping handle and a cable. The tipping handle is positioned upwards from the bottom of the truck bed. The tipping handle and the locking member are connected by the cable, which drives the cable to move, causing the locking member to move out of the locking hole.

[0017] With the above technical solution, the tipping handle is set from the bottom of the truck bed upwards, making it easier for users to find and operate the cable. This provides a more natural way of hand movement, especially for operators who are standing or in a higher position.

[0018] Furthermore, the locking member includes a connecting part connected to the cable and a locking part that mates with the locking hole. The connecting part and the locking part are fixedly connected or integrally formed, and the portion between the connecting part and the locking part is rotatably mounted on the truck bed.

[0019] The above technical solutions, through integral molding or fixed connection, ensure the stability between the connecting part and the locking part, which can withstand greater forces and is not easily damaged, while ensuring the reliability of the unlocking process.

[0020] Furthermore, the tipping bucket handle is provided with a rotating paddle, which is rotatably mounted on the tipping bucket handle. The rotating paddle rotates and drives the cable to move, so that the locking member moves out of the locking hole.

[0021] Through the above technical solution, the rotation unlocking action has a clear direction and process (e.g., clockwise or counterclockwise rotation or a certain angle needs to be rotated to unlock), minimizing accidental unlocking caused by external force collisions or accidental touches.

[0022] Furthermore, the tipping handle includes a gripping area and a mounting area for mounting the rotating paddle, the mounting area being located on one side of the gripping area.

[0023] With the above technical solution, the grip area and the installation area are clearly separated, and users can minimize the chance of accidentally touching the rotating paddle when holding the handle, thereby reducing the possibility of misoperation. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the handcart of this utility model;

[0026] Figure 2 This is a partial structural diagram of the handcart of this utility model;

[0027] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the vehicle bed of this utility model in a flipped state;

[0029] In the diagram, 10 is the frame; 11 is the locking hole; 12 is the handrail; 13 is the fixing plate; 20 is the truck bed; 21 is the locking element; 211 is the connecting part; 212 is the locking part; 22 is the rotation point; 23 is the limiting post; 30 is the elastic element; 40 is the tipping handle; 401 is the gripping area; 402 is the mounting area; 41 is the rotating lever; 42 is the cable; and 50 is the mounting space. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0031] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein.

[0032] It should be understood that in the various embodiments of this utility model, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this utility model.

[0033] It should be understood that in this invention, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product or device.

[0034] It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0035] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0036] like Figures 1 to 4 As shown, this utility model provides a handcart, including a frame 10 and a cart 20. The cart 20 is rotatably mounted on the frame 10. A locking hole 11 is provided on the frame 10 at the rear of the cart 20. A locking member 21 is provided at the rear of the cart 20 to be inserted into the locking hole 11 and to cooperate with the locking hole 11 to lock the cart 20 and restrict the cart 20 from rotatating. An unlocking component is also provided at the rear of the cart 20 to be unlocked by external force to move the locking member 21 out of the locking hole 11.

[0037] Firstly, the locking element 21 is located at the rear of the truck bed 20 and engages with the locking hole 11 on the frame 10. This places the locking device in a more conspicuous position (at the rear of the truck bed 20) rather than hiding it at the bottom of the truck bed 20. The operator can directly determine whether the truck bed 20 is locked by observing whether the locking element 21 is inserted into the locking hole 11, avoiding potential safety hazards caused by the inability to confirm the locking status and improving reliability. Secondly, the unlocking component is located at the rear of the truck bed 20, allowing the user to easily unlock it by crouching down and inspecting the bottom of the truck bed 20. Since the locking element 21, locking hole 11, and unlocking component are all located at the rear of the truck bed 20, compared to the locking devices located at the bottom of the truck bed 20 in existing technologies, maintenance personnel can more easily access these components during repairs or replacements. There is no need for complex disassembly of the bottom of the truck bed 20 or operation in confined spaces, reducing the difficulty of maintenance.

[0038] Furthermore, a handrail 12 is provided at the rear of the frame 10, and an installation space 50 is provided between the handrail 12 and the truck bed 20. The installation space 50 is open on both sides. The locking member 21 is closer to the center of the frame 10 than the locking hole 11. The locking member 21 is inserted into the locking hole 11 from the center of the frame 10 to the left, making the locking status more obvious. Users can more easily judge whether the locking member 21 is correctly inserted into the locking hole 11, effectively avoiding the possibility that the locking member 21 is obstructed by the view of other structures, thereby ensuring that the truck bed 20 is in a safe locked state, improving the safety of use, and further reducing the safety hazards caused by incomplete locking.

[0039] The locking element 21 and the locking hole 11 are both located far from the center of the frame 10, allowing users to more easily approach and observe these components from the side.

[0040] It also includes a fixing plate 13 with locking holes 11. The fixing plate 13 is detachably connected to the upper surface of the frame 10, which is convenient for observation. When maintenance or replacement of the locking components is required, the fixing plate 13 can be simply removed without complicated processing of the entire frame 10.

[0041] Traditional pin-type locking mechanisms are prone to loosening under unidirectional external force. To improve locking reliability, the locking element 21 is rotatably mounted on the truck bed 20. The locking element 21 has a locking position that is rotatably engaged with the locking hole 11 and an unlocking position that is rotatably unlocked from the locking hole 11 relative to the truck bed 20. The rotatable engagement method can provide a more stable connection, effectively resist external forces from all directions, reduce the risk of loosening, and ensure that the truck bed 20 remains stable during transportation as much as possible.

[0042] Among them, an elastic element 30 is provided between the locking member 21 and the truck bed 20. The elastic element 30 applies a force to the locking member 21 to move it to the locked position. This reduces the possibility of the locking member 21 accidentally disengaging from the locked position due to external factors (such as minor collisions), thereby enhancing the safety of the system. The user only needs to overcome the resistance provided by the elastic element 30 to move the locking member 21 to the unlocked position. Once released, the locking member 21 will automatically return to the locked position under the action of the elastic element 30, without the need for additional manual reset steps, simplifying the user's operation process.

[0043] To further improve the accuracy of unlocking and locking, limit posts 23 are provided on both sides of the rotation point 22 of the locking member 21 on the truck bed 20. When the locking member 21 is in the locked position, the locking member 21 and the limit posts 23 are spaced apart. When the locking member 21 is in the unlocked position, the locking member 21 and the limit posts 23 abut against each other to limit the maximum rotation angle of the locking member 21. When the locking member 21 rotates from the locked position to the unlocked position and contacts the limit posts 23, the user can obtain clear operational feedback through touch or sound, knowing that the locking member 21 has reached its limit position and completed the unlocking action. This helps to improve the accuracy and efficiency of operation. The limit posts 23 limit the maximum rotation angle of the locking member 21 and also minimize mechanical damage or functional failure caused by excessive rotation of the locking member 21.

[0044] To facilitate unlocking, the unlocking components include a tipping handle 40 and a cable 42. The tipping handle 40 is set upward from the bottom of the bucket 20. The tipping handle 40 and the locking member 21 are connected by the cable 42, making it easy for the user to find and operate the cable 42. In particular, it provides a more natural way of hand movement for operators who are standing or in a higher position, driving the cable 42 to move the locking member 21 out of the locking hole 11.

[0045] The locking component 21 includes a connecting part 211 connected to the cable 42 and a locking part 212 that mates with the locking hole 11. The connecting part 211 and the locking part 212 are integrally formed. The portion between the connecting part 211 and the locking part 212 is rotatably mounted on the truck bed 20, forming a seesaw-like structure. By pulling the connecting part 211 with the cable 42, the locking component 21 rotates around the rotation point 22. The integral forming method ensures the stability between the connecting part 211 and the locking part 212, which can withstand greater forces and is not easily damaged, while ensuring the reliability of the unlocking process.

[0046] The locking part 212, which needs to be described, has a hook that can extend into the locking hole 11 to achieve the engagement of the locking part 21 and the locking hole 11.

[0047] It should be noted that the elastic element 30 can be a spring, the connecting part 211 is located between the two limiting posts 23, the spring and the cable 42 are respectively located on the same side of the connecting part 211, one end of the spring is connected to the truck bed 20, and the other end is connected to the connecting part 211 so that the locking part 212 is kept engaged with the locking hole 11.

[0048] Press-to-unlock typically relies on a simple linear motion, which can easily lead to accidental unlocking due to external impact or accidental contact. Therefore, in this application, a rotating paddle 41 is provided on the tipping handle 40. The rotating paddle 41 is rotatably mounted on the tipping handle 40. The rotating paddle 41 rotates and drives the cable 42 to move, so that the locking member 21 moves out of the locking hole 11. The rotating unlocking action has a clear direction and process (e.g., clockwise or counterclockwise rotation or rotation at a certain angle is required to unlock), minimizing accidental unlocking due to external impact or accidental contact.

[0049] To further reduce accidental operation, the tipping handle 40 includes a grip area 401 and a mounting area 402 for mounting the rotating paddle 41. The mounting area 402 is located on one side of the grip area 401, clearly separating the grip area 401 from the mounting area 402. This minimizes the possibility of accidental operation when the user grips the handle.

[0050] It should be noted that the tipping handle 40 is located between the handrail 12 and the bucket 20, which can realize multiple functions without increasing the space requirement, helps to maintain the overall compactness of the equipment, and is also closer to the handrail 12 for easy direct operation.

[0051] When the truck bed 20 needs to be tilted, rotate the rotating lever 41 on the tipping handle 40. The rotating lever 41 pulls the cable 42, which stretches the spring. The locking member 21 rotates around the rotation point 22, and the hook moves out of the locking hole 11, allowing the truck bed 20 to tilt. When the truck bed 20 needs to be locked to the frame 10, simply release the rotating lever 41. The hook, under the spring force, extends into the locking hole 11 and engages with the locking hole 11 to lock the truck bed 20, thus preventing it from tilting.

[0052] It should be noted that the truck bed 20 can be tipped over by a hydraulic drive structure or by manual pushing.

[0053] Understandably, in other embodiments, the locking member is inserted into the locking hole from the center of the frame to the right, making the locking state more obvious. Users can more easily judge whether the locking member is correctly inserted into the locking hole, effectively avoiding the possibility of the locking member being obstructed by the view of other structures, thereby ensuring that the truck bed is in a safe locked state, improving the safety of use, and further reducing the safety hazards caused by incomplete locking.

[0054] Understandably, in other embodiments, the armrest may also avoid the space where the locking element is located, and the locking element may also be inserted into the locking hole forward or backward from the center of the frame.

[0055] Understandably, in other embodiments, the connecting part and the locking part are fixedly connected, and the connecting part can more stably drive the locking part to insert into or disengage from the locking hole.

[0056] Understandably, in other embodiments, the upper surface of the frame has an upwardly protruding locking portion with a locking hole. The protruding design makes the locking hole relatively high, allowing for easier observation of the locking status. The locking portion can be integrally formed with the frame.

[0057] Understandably, in other embodiments, the locking element is slidably mounted on the truck bed, and can also be unlocked by pulling the cable to slide it.

[0058] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A handcart comprising a frame (10) and a cart bin (20), said cart bin (20) being pivotably arranged on the frame (10), characterized in that, The frame (10) is provided with a locking hole (11) at the rear of the car body (20), the rear of the car body (20) is provided with a locking member (21) which extends into the locking hole (11) and cooperates with the locking hole (11) to lock the car body (20) to limit the overturning of the car body (20), and the rear of the car body (20) is further provided with an unlocking assembly which is externally forced to move the locking member (21) out of the locking hole (11) to unlock the car body (20).

2. The cart of claim 1, wherein, The rear of the frame (10) is provided with a handrail (12), and a mounting space (50) is provided between the handrail (12) and the car body (20), the mounting space (50) is open to the left and right, the locking member (21) is closer to the center of the frame (10) than the locking hole (11), and the locking member (21) is inserted into the locking hole (11) from the center of the frame (10) to the left or right side.

3. The cart of claim 1, wherein, The upper surface of the frame (10) is provided with a locking portion which is upwardly protruding, and the locking hole (11) is arranged on the locking portion; or further comprising a fixed plate (13) provided with the locking hole (11), and the fixed plate (13) is detachably connected to the upper surface of the frame (10).

4. The cart of claim 1, wherein, The locking member (21) is rotatably arranged on the car body (20), and the locking member (21) has a locking position which is rotatably buckled with the locking hole (11) and an unlocking position which is rotatably unlocked with the locking hole (11) relative to the car body (20).

5. The cart of claim 4, wherein, The locking member (21) and the car body (20) are further provided with an elastic member (30), and the elastic member (30) applies a force to the locking member (21) to move to the locking position.

6. The cart of claim 4, wherein, The car body (20) is provided with a limiting column (23) on both sides of a rotation point (22) of the locking member (21), when the locking member (21) is in the locking position, the locking member (21) and the limiting column (23) are arranged at intervals, and when the locking member (21) is in the unlocking position, the locking member (21) and the limiting column (23) abut to limit the maximum rotation angle of the locking member (21).

7. The cart of claim 4, wherein, The unlocking assembly comprises a tipping handle (40) and a cable (42), the tipping handle (40) is arranged upwardly from the bottom of the car body (20), the tipping handle (40) and the locking member (21) are connected through the cable (42), and the cable (42) is pulled to move the locking member (21) out of the locking hole (11).

8. The cart of claim 7, wherein, The locking member (21) comprises a connecting portion (211) connected with the cable (42) and a locking portion (212) matched with the locking hole (11), the connecting portion (211) and the locking portion (212) are fixedly connected or integrally formed, and the part between the connecting portion (211) and the locking portion (212) is rotatably arranged on the car body (20).

9. The cart of claim 7, wherein, The tipping handle (40) is provided with a rotating tab (41) which is rotatably arranged on the tipping handle (40), and the rotating tab (41) rotates and drives the cable (42) to move, so that the locking member (21) moves out of the locking hole (11).

10. The cart of claim 9, wherein, The tipping handle (40) comprises a holding area (401) and a mounting area (402) for mounting the rotary dial (41), and the mounting area (402) is located at one side of the holding area (401).

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