Folding trolley
By adopting the design of limiting components and folding components on the trolley, the problem of difficult to fold and store the trolley is solved, and the trolley is easily folded and stored, reducing the space occupied.
Patent Information
- Application Number
- CN202420927936.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Existing trolleys are difficult to fold and store, occupy a large space and are inconvenient to use.
A folding trolley is designed, adopting the structural design of the limiting assembly and the folding assembly. The cargo is fixed by the limiting assembly between the large crossbar and the small crossbar, and the length and height of the trolley body are reduced through the folding assembly for folding and storage.
It realizes convenient folding and storage of trolleys, reduces space and improves transportation convenience.
Smart Images
Figure CN222538828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of transportation tools, in particular to a foldable trolley. Background Art
[0002] A handcart is a transport vehicle that is pushed and pulled by manpower. It is widely used in production and life because it is inexpensive, simple to maintain, easy to operate, and light in weight. It can work in places where motor vehicles are inconvenient to use. It is very convenient for transporting lighter items over short distances. It is more common in express delivery, factories, and properties, and is usually used for moving or carrying small objects.
[0003] However, most of the current trolleys are integrated. After transporting items, it is difficult to store the trolley. Usually, the trolley is placed inside the vehicle, taking up much space. Or, in a small tricycle for express delivery, the trolley cannot be placed in a transport box because it is difficult to fold. The trolley can only be tied to the outside of the tricycle for fixation, which is inconvenient to use. Therefore, a foldable trolley is proposed to address the above problem. Utility Model Content
[0004] In order to make up for the deficiency of the prior art, that is, the problem that the trolley is difficult to fold and store, the utility model provides a foldable trolley.
[0005] The technical solution adopted by the utility model to solve its technical problems is: a foldable trolley, the trolley body includes a large cross bar, the large cross bar and the trolley body are clamped together by a limit assembly, the large cross bar and the opposite sides of the trolley body are rotatably connected with fixed wheels and universal wheels through a folding assembly, a guardrail is installed at one end of the large cross bar away from the trolley body, and a push rod is installed at one end of the trolley body away from the large cross bar.
[0006] Preferably, the folding assembly includes a first rod sleeve, the first rod sleeve is slidably sleeved with a fixing rod, a torsion spring is provided between the fixing rod and the first rod sleeve, the end of the fixing rod away from the first rod sleeve is rotatably connected to a socket via a latch, the socket is fixedly connected to the guardrail, a wheel connecting sleeve is rotatably sleeved on the surface of the fixing rod, the fixing rod penetrates the wheel connecting sleeve and is rotatably connected to the socket, a directional wheel is fixedly connected to the lower end of the wheel connecting sleeve, the first rod sleeve is used in conjunction with the wheel connecting sleeve, and a limiting rod is fixedly connected to the side of the fixing rod away from the first rod sleeve.
[0007] Preferably, matching notches are provided on opposite sides of the first rod sleeve and the wheel connecting sleeve, and the wheel connecting sleeve is provided with a limit axis, which is slidably sleeved with the limit rod.
[0008] Preferably, the limiting assembly includes two second rod sleeves, which are respectively sleeved on the outside of the large cross bar, a vertical rod is clamped between the two second rod sleeves through a latch, and the two sliding rods are respectively slidably sleeved with a support plate and a limiting plate, the two limiting plates are located between the two supporting plates, and the two support plates and the two limiting plates are fixedly connected to the vertical rod.
[0009] Preferably, the limiting assembly also includes two push blocks, a guide rod is slidably sleeved between the two push blocks, both ends of the guide rod are respectively fixedly connected to the two limiting plates, a spring is provided between the two push blocks, the guide rod is located on the inner side of the spring, and the two push blocks are respectively clamped on the two sliding rods.
[0010] Preferably, the small cross bar is provided with a plurality of positioning holes matching with the slide bar.
[0011] The utility model is beneficial in that:
[0012] The lifting of the lifting rod and the lifting of the lifting rod together can effectively prevent the lifting of the lifting rod from being swung, and the lifting of the lifting rod and the lifting of the lifting rod together can effectively prevent the lifting of the lifting rod from being swung, and the lifting of the lifting rod and the lifting of the lifting rod together can effectively prevent the lifting of the lifting rod from being swung.
[0013] 2. The utility model adopts the structural design of the folding component. When the hand push rod is rotated downward and the sideboard and the hand push rod are rotated to fold, the sideboard and the hand push rod drive the socket to rotate, and the rotation of the socket drives the fixed rod to move away from the large cross bar. The torsion spring pushes the fixed rod to move away from the large cross bar, which can drive the wheel connecting sleeve to rotate 90° inward, and then drive the wheel connecting sleeve to move toward the large cross bar to fold the universal wheels relatively. The notches of the first rod sleeve and the wheel connecting sleeve also facilitate the rotation and movement of the wheel connecting sleeve. The fixed wheels and the universal wheels can be unfolded by rotating the sideboard and the socket in the opposite direction. After folding, the length and upper and lower heights of the trolley body are significantly reduced, which is convenient for placement and transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 This is a schematic diagram of the structure of a foldable trolley of the utility model;
[0016] Figure 2 This is a schematic diagram of the connection structure of the large cross bar, the small cross bar and the limit assembly of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the large crossbar and folding assembly of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the wheel connecting sleeve of the utility model;
[0019] Figure 5 The schematic diagram of the structure of the torsion spring of the utility model is as follows:
[0020] Figure 6 This is a rear view of the trolley body of the utility model after folding.
[0021] In the figure: 1. trolley body; 2. large cross bar; 3. directional wheel; 4. folding assembly; 401. first rod sleeve; 402. wheel connecting sleeve; 4021. limiting hole; 403. fixing rod; 404. torsion spring; 4041. fixing ring; 4042. plug connector; 405. gasket; 406. socket; 407. limiting rod; 5. guardrail; 6. limiting assembly; 601. second rod sleeve; 602. vertical rod; 603. push block; 604. spring; 605. guide rod; 606. support plate; 607. slide rod; 608. limiting plate; 7. small cross bar; 701. positioning hole; 8. hand push rod; 9. universal wheel. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The following is combined with Figure 1 —6 Further details of this application,
[0024] The present application embodiment discloses a folding trolley. Figure 1 and, Figure 2 , Figure 3 , Figure 5 as well as Figure 4 The trolley body 1 includes a large cross bar 2, which is connected to the trolley body 1 by a limit assembly 6. The opposite sides of the large cross bar 2 and the trolley body 1 are rotatably connected with fixed wheels 3 and universal wheels 9 through folding assemblies 4. A railing 5 is installed at one end of the large cross bar 2 away from the trolley body 1, and a push rod 8 is installed at one end of the trolley body 1 away from the large cross bar 2. The large cross bar 2 and the small cross bar 7 are fixed by the limit assembly 6. The goods are placed on the large cross bar 2 and the small cross bar 7. The push rod 8 is used to pull the goods. The push rod 8 is also equipped with a limit assembly 6 for changing the height of the push rod 8, which is convenient for folding. The trolley body 1 is foldable, the universal wheel 9 is a universal wheel for easy steering, and the fixed wheel 3 is a fixed wheel for easy walking. When folding, first rotate the railing 5 in the direction of the small cross bar 7, and under the action of the folding component 4, rotate the two fixed wheels 3 inward and fold them, and then make the two push blocks 603 move relative to each other by hand, and no longer limit the small cross bar 7, and move the small cross bar 7 in the direction of the large cross bar 2 to change the length of the trolley body 1, which is convenient for folding and reduces the occupied space, and then rotate downward by the hand push rod 8, and under the action of the folding component 4, the universal wheel 9 is relatively folded. After folding, the length and upper and lower heights of the trolley body 1 are significantly reduced, which is convenient for placement and transportation.
[0025] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5The folding assembly 4 includes a first rod sleeve 401, which is fixedly connected to a fixing rod 403 through a bolt, a torsion spring 404 is provided between the fixing rod 403 and the first rod sleeve 401, and one end of the fixing rod 403 away from the first rod sleeve 401 is rotatably connected to a socket 406 through a limiting rod 407, and the socket 406 is fixedly connected to the fence 5, and a wheel connecting sleeve 402 is slidably sleeved on the surface of the fixing rod 403, and the fixing rod 403 passes through the wheel connecting sleeve 402 and is rotatably connected to the socket 406, and the lower end of the wheel connecting sleeve 402 is fixedly connected to a directional Wheel 3, one end of the fixed rod 403 close to the socket 406 is slidably sleeved with a gasket 405, the gasket 405 is located between the socket 406 and the wheel connecting sleeve 402, the first rod sleeve 401 is used in conjunction with the wheel connecting sleeve 402, the folding component 4 has two groups of the same structure, each group has two, the wheel connecting sleeve 402 is used in conjunction with the two fixed wheels 3 and the two universal wheels 9 respectively, when the socket 406 rotates, the position of the pin on the socket 406 is different from the first rod sleeve 401, when the fence 5 is in a vertical state, the distance between the pin on the socket 406 and the first rod sleeve 401 is smaller than the horizontal position of the fence 5 The distance between the pins on the socket 406 is in the state, the first rod sleeve 401 and the large cross bar 2 are fixed by the pins, the surface of the fixed rod 403 is provided with a torsion spring 404, the torsion spring 404 is inside the wheel connecting sleeve 402, and the inner side of the wheel connecting sleeve 402 limits the torsion spring 404 at the same time, and the other side of the torsion spring 404 is limited by the first rod sleeve 401, when the railing 5 is rotated to fold, the railing 5 drives the socket 406 to rotate along the limiting rod 407, and the two groups of sockets 406 are fixedly connected to the hand push rod 8 and the railing 5 respectively, and the socket bottom 406 part fixedly connected to the hand push rod 8 A slide groove is provided to prevent the push rod 8 from being unable to rotate. The rotation of the socket 406 drives the gasket 405 to move away from the large cross bar 2. The torsion spring 404 pushes the gasket 405 to move away from the large cross bar 2, thereby driving the wheel connecting sleeve 402 to move away from the large cross bar 2. The torsion spring 404 then pushes the wheel connecting sleeve 402 to move away from the large cross bar 2. Due to the elongation of the torsion spring 404, the two wheel connecting sleeves 402 can be driven to rotate toward each other along the fixed rod 403 to complete the folding. The push rod 8 and the guardrail 5 are rotated in the opposite direction to extend the directional wheel 3 and the universal wheel 9 to a vertical state.
[0026] Reference Figure 3 and Figure 4The first rod sleeve 401 and the wheel connecting sleeve 402 are provided with matching notches on the opposite sides, the wheel connecting sleeve 402 is provided with a limiting hole 4021, the limiting hole 4021 is slidably sleeved with the torsion spring 404, the torsion spring 404 is provided with a fixing ring 4041 on the side close to the first rod sleeve 401, and the torsion spring 404 is provided with a plug connector 4042 matching the limiting hole 4021 on the side close to the wheel connecting sleeve 402, and the plug connector 4042 is inserted into the limiting hole 4021. The position is limited in the position hole 4021, and the fixing ring 4041 is fixed by the latch on the first rod sleeve 401. When the wheel connecting sleeve 402 moves away from the large cross bar 2, the wheel connecting sleeve 402 can be driven to rotate 90° inward to complete the folding of the fixed wheel 3 and the universal wheel 9. The notches of the first rod sleeve 401 and the wheel connecting sleeve 402 also facilitate the rotation and movement of the wheel connecting sleeve 402. The fixed wheel 3 and the universal wheel 9 can be unfolded by rotating the fence 5 and the socket 406 in the opposite direction.
[0027] Reference Figure 1 and Figure 2 The limiting assembly 6 includes two second rod sleeves 601, and the two second rod sleeves 601 are respectively sleeved on the outside of the large cross bar 2, and a vertical rod 602 is clamped between the two second rod sleeves 601 through a latch, and the two sliding rods 607 are respectively slidably sleeved with a support plate 606 and a limiting plate 608, and the two limiting plates 608 are located between the two support plates 606. The two support plates 606 and the two limiting plates 608 are fixedly connected to the vertical rod 602. When the length of the trolley body 1 needs to be changed, the two push blocks 603 can be held by one hand to drive the two push blocks 603 along the guide rod 605 moves relative to each other, squeezing the spring 604, and then pulling out the two slide bars 607, and no longer limiting the second rod sleeve 601, the large cross bar 2 and the small cross bar 7. At this time, the small cross bar 7 is moved in the direction of the large cross bar 2. After moving to the appropriate position, the push block 603 is released. At this time, the push block 603 moves along the direction of the guide rod 605 under the elastic force of the spring 604, driving the slide bar 607 to lock the second rod sleeve 601, the large cross bar 2 and the small cross bar 7, completing the limiting of the second rod sleeve 601, the large cross bar 2 and the small cross bar 7. Limiting rings can be set on the opposite surfaces of the two slide bars 607 to prevent the slide bars 607 from falling.
[0028] Reference Figure 1 and Figure 2 The limiting assembly 6 also includes two push blocks 603, a guide rod 605 is slidably sleeved between the two push blocks 603, the two ends of the guide rod 605 are respectively fixedly connected to the two limiting plates 608, a spring 604 is provided between the two push blocks 603, the guide rod 605 is located on the inner side of the spring 604, and the two push blocks 603 are respectively clamped on the two sliding rods 607.
[0029] Reference Figure 1 and Figure 2 The small cross bar 7 is provided with a plurality of positioning holes 701 matching with the slide bar 607, so as to facilitate changing the length of the trolley body 1 and thus facilitate folding and storage, thereby reducing occupied space.
[0030] Working principle: The large cross bar 2 and the small cross bar 7 are fixed by the limit assembly 6, and the goods are placed on the large cross bar 2 and the small cross bar 7. The hand push rod 8 is used to pull the goods. The hand push rod 8 is also equipped with a limit assembly 6 for changing the height of the hand push rod 8. By holding the two push blocks 603 by hand, the two push blocks 603 are driven to move relative to each other along the guide rod 605, squeezing the spring 604, and then pulling out the two slide bars 607, and no longer pressing the second rod sleeve 601, The large cross bar 2 and the small cross bar 7 are limited, and the small cross bar 7 is moved toward the direction of the large cross bar 2. After moving to the appropriate position, the push block 603 is released. At this time, the push block 603 moves along the direction of the guide rod 605 under the elastic force of the spring 604, driving the slide bar 607 to lock the second rod sleeve 601, the large cross bar 2 and the small cross bar 7, completing the limiting of the second rod sleeve 601, the large cross bar 2 and the small cross bar 7. By making the two push blocks 603 move relative to each other, they are no longer The small cross bar 7 is limited and the small cross bar 7 is moved in the direction of the large cross bar 2, changing the length of the trolley body 1, which is convenient for folding and reducing the occupied space. When the hand push rod 8 and the rotating guardrail 5 are rotated downward, when the rotating guardrail 5 and the hand push rod 8 are folded, the guardrail 5 and the hand push rod 8 drive the socket 406 to rotate, and the rotation of the socket 406 drives the gasket 405 to move away from the large cross bar 2. The torsion spring 404 pushes the gasket 405 to move away from the large cross bar 2, which can drive the wheel connecting sleeve 402 to rotate 90° inward, and then drive the wheel connecting sleeve 402 to move toward the large cross bar 2 to fold the universal wheel 9 relatively. The notches of the first rod sleeve 401 and the wheel connecting sleeve 402 also facilitate the rotation and movement of the wheel connecting sleeve 402. The directional wheel 3 and the universal wheel 9 can be unfolded by rotating the guardrail 5 and the socket 406 in the opposite direction. After folding, the length and upper and lower heights of the trolley body 1 are significantly reduced, which is convenient for placement and transportation.
[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A foldable trolley, comprising a trolley body (1), characterized in that: The trolley body (1) comprises a large cross bar (2), the large cross bar (2) and the trolley body (1) are clamped together via a limit assembly (6), the large cross bar (2) and the trolley body (1) are rotatably connected to the opposite sides thereof via a folding assembly (4) with a fixed wheel (3) and a universal wheel (9), the end of the large cross bar (2) away from the trolley body (1) is provided with a guardrail (5), and the end of the trolley body (1) away from the large cross bar (2) is provided with a push rod (8); The folding assembly (4) comprises a first rod sleeve (401), the first rod sleeve (401) being fixedly connected to a fixing rod (403) via a bolt, a torsion spring (404) being provided between the fixing rod (403) and the first rod sleeve (401), an end of the fixing rod (403) away from the first rod sleeve (401) being rotatably connected to a socket (406) via a limiting rod (407), the socket (406) being fixedly connected to the guardrail (5), and a vehicle spring (406) being slidably sleeved on the surface of the fixing rod (403) A wheel connecting sleeve (402), the fixing rod (403) passes through the wheel connecting sleeve (402) and is rotatably connected to the socket (406), the lower end of the wheel connecting sleeve (402) is fixedly connected to a directional wheel (3), one end of the fixing rod (403) close to the socket (406) is slidably sleeved with a gasket (405), the gasket (405) is located between the socket (406) and the wheel connecting sleeve (402), and the first rod sleeve (401) is used in conjunction with the wheel connecting sleeve (402); The limiting assembly (6) comprises two second rod sleeves (601) and a sliding rod (607), the two second rod sleeves (601) are respectively sleeved on the outside of the large cross bar (2), a vertical rod (602) is clamped between the two second rod sleeves (601) via a latch, the two sliding rods (607) are respectively slidably sleeved with a support plate (606) and a limiting plate (608), the two limiting plates (608) are located between the two support plates (606), the two support plates (606) and the two limiting plates (608) are fixedly connected to the vertical rod (602), and the small cross bar (7) is provided with a plurality of positioning holes (701) matching the sliding rods (607); The limiting assembly (6) further comprises two push blocks (603), a guide rod (605) being slidably sleeved between the two push blocks (603), two ends of the guide rod (605) being respectively fixedly connected to two limiting plates (608), a spring (604) being arranged between the two push blocks (603), the guide rod (605) being located on the inner side of the spring (604), and the two push blocks (603) being respectively clamped to two sliding rods (607).
2. A foldable trolley according to claim 1, characterized in that: Matching notches are provided on opposite sides of the first rod sleeve (401) and the wheel connecting sleeve (402), and a limiting hole (4021) is provided on the wheel connecting sleeve (402), and the limiting hole (4021) is slidably sleeved with the torsion spring (404).
3. A foldable trolley according to claim 2, characterized in that: A fixing ring (4041) is provided on one side of the torsion spring (404) close to the first rod sleeve (401), and a plug connector (4042) matching the limiting hole (4021) is provided on one side of the torsion spring (404) close to the wheel connecting sleeve (402).