Trolley connection structure

Abstract

The utility model relates to a kind of trolley connecting structure, belong to trolley technical field, trolley connecting structure includes: base subassembly, base subassembly is equipped with first assembly hole;Handrail subassembly, handrail subassembly is adjacent with base subassembly;Connecting subassembly, connecting subassembly includes first connecting component and second connecting component, first connecting component and second connecting component are all set on base subassembly, first connecting component is oppositely set with second connecting component, first connecting component and / or second connecting component are equipped with second assembly hole, first connecting component and second connecting component are all connected with handrail subassembly.The trolley connecting structure disclosed in the application is provided with second assembly hole by first connecting component and second connecting component is equipped with second assembly hole and second assembly hole is oppositely set with first assembly hole, replace traditional enclosure type half-hole design, reinforce the strength of second assembly hole, can bear greater force when using bolt connection.

Description

Technical Field

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

[0002] In the traditional handcart connection structure, the base assembly and the handle assembly are usually assembled using separate connecting parts. The two separate connecting parts enclose an assembly hole, that is, each of the two separate connecting parts has a semi-circular hole to facilitate bolt assembly. However, this structural design results in a relatively small bolt force that the assembly hole can withstand, and the two separate connecting parts tend to drift apart when tightening the bolts, leading to poor connection stability. Utility Model Content

[0003] Therefore, it is necessary to provide a handcart connection structure to address the problems of the assembly hole being small due to the enclosed assembly hole of the traditional split connecting parts of the handcart, and the poor connection stability caused by the two split connecting parts easily moving away from each other when tightening the bolts.

[0004] A handcart connection structure includes: a base assembly extending in a length direction and having a first mounting hole; a handrail assembly adjacent to the base assembly and extending in a height direction; and a connecting assembly including a first connecting component and a second connecting component, both disposed on the base assembly, the first connecting component and the second connecting component being opposite to each other, the first connecting component and / or the second connecting component having a second mounting hole opposite to the first mounting hole, and both the first connecting component and the second connecting component being connected to the handrail assembly.

[0005] This application discloses a handcart connection structure. By connecting both the first and second connecting components, which are mounted on the base assembly, to the handle assembly, the handcart assembly becomes more secure, resulting in better stability and reliability. The first and second connecting components each have a second mounting hole, positioned opposite to the first mounting hole. This replaces the traditional enclosed semi-hole design, strengthening the second mounting hole and allowing it to withstand greater forces when bolted. Furthermore, the first and second connecting components do not move apart when the bolts are tightened. This design ensures even force distribution during bolt tightening, significantly reducing the risk of loosening or cracking at the connection point. During bolt tightening, the first and second connecting components do not move apart due to force, maintaining a stable relative position, ensuring assembly accuracy and connection strength. This effectively improves connection reliability and prevents easy loosening of the connecting components over long-term use, extending the product's lifespan.

[0006] In one embodiment, a reinforcing plate is further included, which is connected to both the first connecting component and the second connecting component. By connecting the reinforcing plate to both the first and second connecting components, the overall rigidity of the connecting assembly is effectively enhanced, enabling it to withstand greater loads without easily deforming or being damaged. This design further constrains the relative positions of the first and second connecting components, preventing them from shifting or loosening under stress, thus ensuring the stability and reliability of the connection.

[0007] In one embodiment, the system further includes multiple mounting components and multiple first mounting holes. The number of mounting components, second mounting holes, and first mounting holes are the same, and each mounting component corresponds to one of the second mounting holes and the first mounting holes. By having multiple mounting components engage with their corresponding second and first mounting holes, a multi-point fixed connection is formed, making the connection between the base assembly and the armrest assembly more stable and improving the stability and reliability of the connection.

[0008] In one embodiment, the handle assembly is rotatable relative to the connecting assembly. This rotatability allows for adjustment of the handle angle to suit different operating postures, improving the trolley's versatility.

[0009] In one embodiment, a receiving space is formed between the first connecting member and the second connecting member, and a portion of the handrail assembly is located within the receiving space. The receiving space formed between the first connecting member and the second connecting member provides a wrapping fixation to the handrail assembly, effectively limiting its displacement and making the connection structure more stable and less prone to loosening under stress.

[0010] In one embodiment, the structure of the first connecting component is identical to that of the second connecting component. The identical structure of the first and second connecting components allows for interchangeable use, reducing component differentiation steps during assembly, lowering installation complexity, and improving production efficiency. Furthermore, the connection exhibits good stability and reliability.

[0011] In one embodiment, there are multiple second mounting holes, each consisting of at least a first mating hole and a second mating hole. One of the first and second mating holes is located on the first connecting component, and the other is located on the second connecting component. By having the first and second mating holes respectively located on the first and second connecting components, a multi-point fixing structure is formed, ensuring a uniform distribution of bolt tightening force and preventing deformation or loosening caused by excessive force at a single point.

[0012] In one embodiment, the first connecting component has a first mating hole, the second connecting component has a second mating hole, the first connecting component has a first mating space, and the second connecting component has a second mating space. A portion of the first connecting component extends toward the second connecting component, and this extended portion is located within the second mating space. The first connecting component has the first mating hole, and the second connecting component has the second mating hole. The first and second connecting components, by extending into each other, form a cross-nested structure, effectively preventing lateral displacement or separation of the connecting components under stress, thus improving overall stability. Furthermore, it reduces bending process requirements, effectively lowering production costs and improving economic efficiency.

[0013] In one embodiment, the first connecting component includes a first mating portion and a second mating portion. The first mating portion is disposed on the base assembly and extends toward the second connecting component. The first mating portion has a first mating hole. The second mating portion is disposed on the first mating portion, and the handrail assembly mates with the second mating portion. The first mating portion is directly connected to the base assembly, and the second mating portion mates with the handrail assembly, thereby improving the stability and reliability of the connection. This connection method replaces traditional welding, overcomes the positioning problems of welding, and improves its installation efficiency while maintaining the structural strength of the connecting component.

[0014] In one embodiment, the first mating part has an L-shaped cross-section. Because the first mating part has an L-shaped cross-section, it can be inverted and interlocked with the second connecting member, resulting in better connection stability and reliability.

[0015] In one embodiment, the second mating part is provided with a third mating hole, and the second connecting component is provided with a fourth mating hole. The handrail assembly mates with the third mating hole and the fourth mating hole respectively. By mates with the third mating hole and the fourth mating hole respectively, a multi-point fixing structure is formed, making the connection between the handrail assembly and the connecting component more stable and effectively preventing relative displacement under force.

[0016] In one embodiment, the handrail assembly includes a connecting shaft and a handrail body. The connecting shaft is connected to the first connecting component and the second connecting component, respectively. The handrail body is disposed on the connecting shaft, and the handrail body and the connecting shaft can rotate together relative to the connecting component. The ability of the handrail body and the connecting shaft to rotate together facilitates adjustment of the handrail angle according to usage needs, adapting to different pushing / pulling postures or storage states, thus improving the versatility of the trolley.

[0017] In one embodiment, there are multiple connecting components, all of which are disposed on the base assembly and connected to the armrest assembly. Each connecting component has a sliding hole and also includes a connecting rod that movably engages with the connecting components and is located at the sliding hole. By connecting multiple components to the armrest assembly, assembly stability is improved, and the product's lifespan is extended.

[0018] In one embodiment, the handrail assembly can abut or detach from the connecting rod. By allowing the handrail assembly to abut against the connecting rod, the position of the handrail assembly can be limited, making it highly practical.

[0019] In one embodiment, an elastic element is further included, with its two ends connected to the handrail assembly and the connecting rod, respectively. The elastic element allows a spring force to be applied to the handrail assembly, enabling it to automatically reset and improving automation. Attached Figure Description

[0020] Figure 1 First perspective view of the handcart's connection structure;

[0021] Figure 2 A second perspective view of the handcart's connection structure;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0024] Figure 5 This is the first exploded view of the handcart's connecting structure;

[0025] Figure 6 This is the second exploded view of the handcart's connecting structure;

[0026] Figure 7 A perspective view of the connecting components, fittings, connecting rods, and fittings;

[0027] Figure 8 This is a first perspective view of the connecting components;

[0028] Figure 9 This is a second perspective view of the connecting components;

[0029] Figure 10 Top view of the connecting components;

[0030] Figure 11 A 3D view of the handrail assembly;

[0031] Figure 12 This is an exploded view of the handrail assembly.

[0032] Figure 13 This is a 3D view of the base assembly.

[0033] The correspondence between the reference numerals and the component names is as follows:

[0034] 1. Base assembly, 101. First mounting hole;

[0035] 2. Handrail assembly; 21. Connecting shaft; 22. Handrail body;

[0036] 3 connecting components, 31 first connecting parts, 311 first mating parts, 312 second mating parts, 32 second connecting parts, 33 reinforcing plate, 301 second mounting hole, 3011 first mating hole, 3012 second mating hole, 302 receiving space, 303 first mating space, 304 second mating space, 305 third mating hole, 306 fourth mating hole, 307 sliding hole;

[0037] 4. Assembly parts;

[0038] 5 connecting rods;

[0039] 6. Elastic components. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] like Figure 1-13As shown, this embodiment discloses a handcart connection structure, including: a base assembly 1, which extends in the length direction and has a first mounting hole 101; a handrail assembly 2, which is disposed adjacent to the base assembly 1 and extends in the height direction; and a connecting assembly 3, which includes a first connecting component 31 and a second connecting component 32, both of which are disposed on the base assembly 1, with the first connecting component 31 and the second connecting component 32 facing each other, and the first connecting component 31 and / or the second connecting component 32 having a second mounting hole 301, which is opposite to the first mounting hole 101, and both the first connecting component 31 and the second connecting component 32 being connected to the handrail assembly 2.

[0043] This application discloses a handcart connection structure. Both the first connecting component 31 and the second connecting component 32, located on the base assembly 1, are connected to the handle assembly 2, making the handcart assembly more secure and improving its stability and reliability. The first connecting component 31 and the second connecting component 32 each have a second mounting hole 301, with the second mounting hole 301 opposite to the first mounting hole 101. This replaces the traditional enclosed semi-hole design, strengthening the second mounting hole 301 and allowing it to withstand greater force when bolted. The first connecting component 31 and the second connecting component 32 do not move away from each other when the bolts are tightened. This design ensures uniform force distribution during bolt tightening, significantly reducing the risk of loosening or cracking at the connection point. During bolt tightening, the first connecting component 31 and the second connecting component 32 do not move away from each other due to force, maintaining a stable relative position, ensuring assembly accuracy and connection strength. This effectively improves connection reliability and prevents the connecting components 3 from easily loosening over long-term use, extending the product's service life.

[0044] like Figure 8-10 As shown, in addition to the features of the above embodiments, this embodiment further includes a reinforcing plate 33, which is connected to the first connecting component 31 and the second connecting component 32 respectively. By connecting the reinforcing plate 33 to the first connecting component 31 and the second connecting component 32 respectively, the overall rigidity of the connecting assembly 3 is effectively enhanced, enabling it to withstand greater loads without easily deforming or being damaged. This design further constrains the relative positions of the first connecting component 31 and the second connecting component 32, preventing them from shifting or loosening under stress, thus ensuring the stability and reliability of the connection.

[0045] like Figure 5-7As shown, in addition to the features of the above embodiments, this embodiment further specifies that it includes multiple assembly parts 4, multiple first assembly holes 101, and the number of assembly parts 4, second assembly holes 301, and first assembly holes 101 are the same, with each assembly part 4 corresponding to a specific second assembly hole 301 and a specific first assembly hole 101. By having multiple assembly parts 4 engage with their corresponding second assembly holes 301 and first assembly holes 101, a multi-point fixed connection is formed, making the connection between the base assembly 1 and the armrest assembly 2 more stable and improving the stability and reliability of the connection.

[0046] In addition to the features of the above embodiments, this embodiment further specifies that the handle assembly 2 is rotatable relative to the connecting assembly 3. The rotatability of the handle assembly 2 relative to the connecting assembly 3 facilitates adjustment of the handle angle according to usage needs, adapting to different operating postures and improving the applicability of the trolley.

[0047] like Figure 3 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a receiving space 302 is formed between the first connecting member 31 and the second connecting member 32, and a portion of the handrail assembly 2 is located in the receiving space 302. The receiving space 302 formed between the first connecting member 31 and the second connecting member 32 provides a wrapping fixation to the handrail assembly 2, effectively restricting its displacement and making the connection structure more stable and less prone to loosening under stress.

[0048] like Figure 8-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the structure of the first connecting component 31 is the same as the structure of the second connecting component 32. The first connecting component 31 and the second connecting component 32 have the same structure and can be used interchangeably, reducing the component differentiation steps during assembly, lowering installation complexity, and improving production efficiency. Furthermore, the connection exhibits good stability and reliability.

[0049] like Figure 5-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of the second assembly holes 301 is multiple, and the multiple second assembly holes 301 are at least first mating holes 3011 and second mating holes 3012. One of the first mating holes 3011 and the second mating holes 3012 is provided on the first connecting member 31, and the other of the first mating holes 3011 and the second mating holes 3012 is provided on the second connecting member 32. By having the first mating holes 3011 and the second mating holes 3012 respectively provided on the first connecting member 31 and the second connecting member 32, a multi-point fixing structure is formed, so that the bolt tightening force is evenly distributed, avoiding deformation or loosening caused by excessive force at a single point.

[0050] like Figure 8-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first connecting member 31 is provided with the first mating hole 3011, the second connecting member 32 is provided with the second mating hole 3012, the first connecting member 31 is provided with the first mating space 303, the second connecting member 32 is provided with the second mating space 304, a portion of the first connecting member 31 extends toward the second connecting member 32, the portion of the first connecting member 31 extending toward the second connecting member 32 is located at the second mating space 304, the portion of the first connecting member 31 extending toward the second connecting member 32 is provided with the first mating hole 3011, a portion of the second connecting member 32 extends toward the first connecting member 31, the portion of the second connecting member 32 extending toward the first connecting member 31 is located at the first mating space 303, and the portion of the second connecting member 32 extending toward the first connecting member 31 is provided with the second mating hole 3012. The first connecting member 31 and the second connecting member 32, by extending into the assembly space with their respective extension portions, form a cross-nested structure, effectively preventing the connecting members from undergoing lateral displacement or separation under stress, thus improving overall stability. Furthermore, it can reduce bending process requirements, effectively reduce production costs, and improve economic efficiency.

[0051] like Figure 8-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first connecting component 31 includes a first mating portion 311 and a second mating portion 312. The first mating portion 311 is disposed on the base assembly 1 and extends toward the second connecting component 32. The first mating portion 311 is provided with a first mating hole 3011. The second mating portion 312 is disposed on the first mating portion 311, and the handrail assembly 2 mates with the second mating portion 312. The first mating portion 311 is directly connected to the base assembly 1, and the second mating portion 312 mates with the handrail assembly 2, thereby improving the stability and reliability of the connection. This connection method replaces traditional welding, overcomes the positioning problem of welding, and improves its installation efficiency while retaining the structural strength of the connecting component 3.

[0052] like Figure 8-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-section of the first mating part 311 is L-shaped. Because the cross-section of the first mating part 311 is L-shaped, it can be inverted and fitted with the second connecting member 32, resulting in better stability and reliability of the connection.

[0053] like Figure 3-4 and Figure 8-10As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the second mating part 312 is provided with a third mating hole 305, the second connecting member 32 is provided with a fourth mating hole 306, and the handrail assembly 2 mates with the third mating hole 305 and the fourth mating hole 306 respectively. By mates of the handrail assembly 2 with the third mating hole 305 and the fourth mating hole 306 respectively, a multi-point fixing structure is formed, making the connection between the handrail assembly 2 and the connecting member more stable and effectively preventing relative displacement under force.

[0054] like Figure 3-4 and Figure 11-12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the handrail assembly 2 includes a connecting shaft 21 and a handrail body 22. The connecting shaft 21 is connected to the first connecting component 31 and the second connecting component 32 respectively. The handrail body 22 is disposed on the connecting shaft 21, and the handrail body 22 and the connecting shaft 21 can rotate together relative to the connecting assembly 3. The ability of the handrail body 22 and the connecting shaft 21 to rotate together facilitates adjustment of the handrail angle according to usage needs, adapting to different pushing / pulling postures or storage states, thus improving the applicability of the trolley.

[0055] like Figure 1 and Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of connecting components 3 is multiple, all of the multiple connecting components 3 are disposed on the base assembly 1, all of the multiple connecting components 3 are connected to the armrest assembly 2, all of the multiple connecting components 3 are provided with sliding holes 307, and a connecting rod 5 is also included, the connecting rod 5 being movably engaged with the multiple connecting components 3 and located at the sliding hole 307. By connecting multiple connecting components 3 to the armrest assembly 2, the stability of the assembly can be improved, and the service life of the product can be extended.

[0056] like Figure 3 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the handrail assembly 2 can abut against or separate from the connecting rod 5. By allowing the handrail assembly 2 to abut against the connecting rod 5, the position of the handrail assembly 2 can be limited, making it highly practical.

[0057] like Figure 1-3 and Figure 5-7 As shown, in addition to the features of the above embodiments, this embodiment further includes an elastic element 6, the two ends of which are respectively connected to the handrail assembly 2 and the connecting rod 5. The elastic element 6 allows a spring force to be applied to the handrail assembly 2, enabling it to automatically reset and improving automation.

[0058] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A handcart connection structure, characterized in that, include: A base assembly (1) extends in the length direction and is provided with a first mounting hole (101); Armrest assembly (2), wherein the armrest assembly (2) is disposed adjacent to the base assembly (1), and the armrest assembly (2) extends in the height direction; A connecting component (3) is provided, comprising a first connecting part (31) and a second connecting part (32). The first connecting part (31) and the second connecting part (32) are both disposed on the base assembly (1). The first connecting part (31) and the second connecting part (32) are disposed opposite to each other. The first connecting part (31) and / or the second connecting part (32) are provided with a second mounting hole (301). The second mounting hole (301) is disposed opposite to the first mounting hole (101). The first connecting part (31) and the second connecting part (32) are both connected to the armrest assembly (2).

2. The handcart connection structure according to claim 1, characterized in that, It also includes a reinforcing plate (33), which is connected to the first connecting component (31) and the second connecting component (32) respectively; And / or may also include a plurality of fittings (4), a plurality of first mounting holes (101), the same number of fittings (4), second mounting holes (301) and first mounting holes (101) and fittings (4) respectively corresponding to the second mounting holes (301) and the first mounting holes (101).

3. The handcart connection structure according to claim 1, characterized in that, The armrest assembly (2) is rotatable relative to the connecting assembly (3); A receiving space (302) is formed between the first connecting member (31) and the second connecting member (32), and a portion of the armrest assembly (2) is located in the receiving space (302); And / or the structure of the first connecting component (31) is the same as the structure of the second connecting component (32).

4. The handcart connection structure according to claim 1, characterized in that, The number of second mounting holes (301) is multiple, and the multiple second mounting holes (301) are at least a first mating hole (3011) and a second mating hole (3012). One of the first mating hole (3011) and the second mating hole (3012) is provided on the first connecting member (31), and the other of the first mating hole (3011) and the second mating hole (3012) is provided on the second connecting member (32).

5. The handcart connection structure according to claim 4, characterized in that, The first connecting component (31) is provided with the first mating hole (3011), the second connecting component (32) is provided with the second mating hole (3012), the first connecting component (31) is provided with the first mating space (303), the second connecting component (32) is provided with the second mating space (304), a portion of the first connecting component (31) extends toward the second connecting component (32), the portion of the first connecting component (31) extending toward the second connecting component (32) is located at the second mating space (304), the portion of the first connecting component (31) extending toward the second connecting component (32) is provided with the first mating hole (3011), a portion of the second connecting component (32) extends toward the first connecting component (31), the portion of the second connecting component (32) extending toward the first connecting component (31) is located at the first mating space (303), and the portion of the second connecting component (32) extending toward the first connecting component (31) is provided with the second mating hole (3012).

6. The handcart connection structure according to claim 5, characterized in that, The first connecting component (31) includes a first mating part (311) and a second mating part (312). The first mating part (311) is disposed on the base assembly (1) and extends toward the second connecting component (32). The first mating part (311) is provided with a first mating hole (3011). The second mating part (312) is disposed on the first mating part (311). The armrest assembly (2) is engaged with the second mating part (312).

7. The handcart connection structure according to claim 6, characterized in that, The cross-section of the first mating part (311) is L-shaped; The second mating part (312) is provided with a third mating hole (305), and the second connecting part (32) is provided with a fourth mating hole (306). The handrail assembly (2) is mated with the third mating hole (305) and the fourth mating hole (306) respectively.

8. The handcart connection structure according to claim 1, characterized in that, The handrail assembly (2) includes a connecting shaft (21) and a handrail body (22). The connecting shaft (21) is connected to the first connecting component (31) and the second connecting component (32) respectively. The handrail body (22) is disposed on the connecting shaft (21). The handrail body (22) and the connecting shaft (21) can rotate together relative to the connecting assembly (3).

9. The handcart connection structure according to claim 1, characterized in that, The number of the connecting components (3) is multiple, and the multiple connecting components (3) are all disposed on the base component (1). The multiple connecting components (3) are all connected to the armrest component (2). The multiple connecting components (3) are provided with sliding holes (307) and also include connecting rods (5). The connecting rods (5) are movably engaged with the multiple connecting components (3) and are located at the sliding holes (307).

10. The handcart connection structure according to claim 9, characterized in that, The handrail assembly (2) can abut against or separate from the connecting rod (5); And / or may also include an elastic element (6), the two ends of which are connected to the handrail assembly (2) and the connecting rod (5), respectively.

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