Multifunctional folding tool car

Abstract

The utility model discloses a multifunctional folding tool car. A bearing unit is provided with a large trundle control unit, a trundle automatic rebounding unit and a storage unit. A key cover is embedded in a supporting plate of the large trundle control unit, and a button triggering assembly is installed in the key cover to control unfolding and folding of the large trundle. A connecting bottom rod of the automatic trundle rebounding unit is provided with a large trundle rebounding assembly and a small trundle rebounding assembly which enable the trundle to be automatically rebounded to a folded state, and the small trundle rebounding assembly is rotationally connected with a folding unit which realizes folding and unfolding of the tool car; the folding unit is connected with the telescopic handle unit through the combined connecting piece; the telescopic handle unit comprises a connecting iron rod and a telescopic handle which is telescopically arranged in the connecting iron rod through a handle fixing piece; the storage unit forms an openable storage space in the middle of the bearing unit. The multifunctional folding tool car is a tool with high practical value due to efficient space utilization, simple operation and various functions.

Description

Technical Field

[0001] The utility model relates to a tool cart, in particular to a multifunctional folding tool cart. Background Art

[0002] With the accelerating pace of modern life and increasingly limited space, folding tool carts have become widely popular due to their flexibility and portability. While existing folding tool cart designs mostly focus on their ease of folding and carrying, they still have some shortcomings: Their functionality is limited, with many folding tool carts only having basic carrying and mobility functions and lacking additional integrated functions such as storage and caster control, which limits their application in different environments; some folding tool carts lack automatic rebound functions during the unfolding and folding process, making operation complex and difficult for the elderly or consumers who are unfamiliar with the operation; and most folding tool carts also lack multiple folding and deformation modes and additional storage space. Therefore, tool carts need to not only have basic folding and mobility functions, but also provide a more practical and diverse functional solution. Utility Model Content

[0003] In order to solve the deficiencies existing in the above technologies, the utility model provides a multifunctional folding tool cart.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multifunctional folding tool cart, comprising a load-bearing unit, a large caster control unit, a caster automatic rebound unit and a storage unit installed on the load-bearing platform;

[0005] The large caster control unit is installed on the load-bearing unit through a support plate. A button cover is embedded in the support plate. The button cover is equipped with a button trigger component connected to the large caster bracket to control the expansion and folding of the large caster.

[0006] The caster automatic rebound unit is installed on the load-bearing unit through a connecting bottom rod. The connecting bottom rod is provided with a large caster rebound component and a small caster rebound component that automatically rebound the caster to a folded state. The small caster rebound component is rotated to connect the folding unit to realize the folding and unfolding of the tool cart.

[0007] The folding unit includes a spring tooth clamp assembly and a combined connecting piece for maintaining a folded state, and is connected to the telescopic handle unit via the combined connecting piece;

[0008] The telescopic handle unit includes a connecting iron rod and a telescopic handle telescopically arranged in the connecting iron rod through a handle fixing piece;

[0009] The storage unit forms an openable storage space in the middle of the load-bearing unit.

[0010] Furthermore, the large caster control unit includes a support plate, a button cover is embedded in the support plate, and a button trigger assembly is installed in the button cover. The button trigger assembly includes a button 1 centrally installed in the button cover, and also includes two pins 1 symmetrically installed in the button cover. The two pins 1 abut against the inclined surfaces formed by the left and right ends of the button 1 at corresponding positions. A spring 1 is installed between the two pins 1. The elastic force of the spring 1 causes the two pins 1 to pass through the two ends of the button cover and connect to the large caster bracket.

[0011] Furthermore, the telescopic handle unit includes a connecting iron rod and a telescopic handle telescopically arranged in the connecting iron rod through a handle fixing piece, a handle telescopic trigger assembly is installed in the handle fixing piece, the handle telescopic trigger assembly includes a button 2 centrally installed in the handle fixing piece, and also includes two latches 2 symmetrically installed in the handle fixing piece, the two latches 2 abut against the inclined surfaces formed by the left and right ends of the button 2 at corresponding positions, a spring 2 is installed between the two latches 2, the elastic force of the spring 2 causes the two latches 2 to pass through the sleeve of the handle fixing piece, the sleeve is sleeved on the connecting iron rod to form a fixed connection, the telescopic handle is passed through the sleeve part and a plurality of positioning holes are opened, and the latches 2 are inserted into the positioning holes of the telescopic handle.

[0012] Furthermore, the folding unit includes a spring tooth clamp assembly and a combined connecting piece. The spring tooth clamp assembly includes an iron shaft, a spring fixing piece passing through the middle of the iron shaft, and tooth clamps passing through both ends of the iron shaft. The spring fixing piece and the tooth clamp are abutted against each other through three phases of springs. The combined connecting piece includes an integrally connected tooth clamp part, a connecting part and an abutting part. The teeth formed on the end face of one end of the tooth clamp part are engaged with the tooth clamp part. The other end of the tooth clamp part is rotatably connected to the caster automatic rebound unit. The connecting part is fixedly connected to the connecting iron rod, and the abutting part abuts against the caster automatic rebound unit.

[0013] Furthermore, the caster automatic rebound unit includes a small caster rebound assembly and a large caster rebound assembly installed on the connecting bottom rod, the small caster rebound assembly includes a small caster fixing part fixedly installed on the connecting bottom rod, a small caster bracket flipably arranged on the small caster fixing part through a spring flip assembly, the small caster bracket is used to install the small caster, the spring flip assembly one includes a bracket fixing part connected to the small caster bracket, the bracket fixing part is hinged to the small caster fixing part through a connecting shaft one, and a torsion spring one is sleeved on the connecting shaft one; the large caster rebound assembly includes a large caster fixing part fixedly installed on the connecting bottom rod, a large caster bracket flipably arranged on the large caster fixing part through a spring flip assembly two, the spring flip assembly two includes a connecting shaft two, the large caster bracket is hinged to the large caster fixing part through the connecting shaft two, and a torsion spring two is sleeved on the connecting shaft two.

[0014] Furthermore, the storage unit includes a storage space formed in the middle of the load-bearing plate, an openable storage cover is provided above the storage space, and also includes a knob switch that is rotatably provided in the load-bearing plate to fix the storage cover. When the rotating boss on the knob switch is rotated to a specific position, the storage cover can be pressed down and clamped.

[0015] The utility model provides a multifunctional folding tool cart, which integrates multiple practical functions. The main advantages include:

[0016] Integrated Versatile Functions: Integrating load-bearing, control, telescopic, folding, automatic rebound, and storage, this tool trolley adapts to a variety of usage scenarios and enhances its applicability. Easy Operation: The user can easily operate the control unit and telescopic handle to quickly expand and fold the tool trolley, enhancing its ease of use. Automatic Rebound Function: The automatic rebound caster design allows the tool trolley to automatically fold when not in use, saving space and reducing operational effort. Stability and Safety: The load-bearing unit ensures stable load bearing, while the spring-loaded toothed latch assembly of the folding unit provides multiple locking mechanisms for safe use. Built-in Storage Space: Provides additional storage space for convenient storage, increasing the practicality of the tool trolley. Efficient Space Utilization: Supports multiple transformation modes and folds compactly for easy storage and transport, making it suitable for space-constrained environments. User-Friendly Experience: From the control buttons to the automatic rebound mechanism, the design takes user habits into consideration, enhancing the operating experience. Wide Applicability: Suitable for a variety of occasions, including home, industry, logistics, and warehousing, it meets the needs of different user groups. To sum up, this multifunctional folding tool cart has become a tool with great practical value due to its efficient space utilization, simple operation and diverse functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the structural disassembly of the large caster control unit.

[0019] Figure 3 This is a schematic diagram of the structural disassembly of the telescopic handle unit.

[0020] Figure 4 Schematic diagram of the structural disassembly of the folding unit.

[0021] Figure 5 This is a schematic structural diagram of the utility model as a window frame.

[0022] Figure 6 A schematic diagram of the structure of the storage unit.

[0023] Figure 7 The effect of this utility model Figure 1 .

[0024] Figure 8 The effect of this utility model Figure 2 .

[0025] Figure 9 The effect of this utility model Figure 3 .

[0026] Figure: A, load-bearing unit; B, large caster control unit; C, telescopic handle unit; D, folding unit; E, caster automatic rebound unit; F, storage unit; 101, load-bearing plate; 201, support plate; 202, latch 1; 203, spring 1; 204, button cover; 205, button 1; 301, connecting iron rod; 302, handle fixing part; 303, telescopic handle; 304, button 2; 305, latch 2; 306, spring 2; 307, sleeve; 401, iron shaft ; 402, spring fixing part; 403, tooth clamping part; 404, spring three; 405, tooth clamping part; 406, connecting part; 407, abutting part; 501, connecting bottom rod; 502, small caster fixing part; 503, small caster bracket; 504, bracket fixing part; 505, connecting shaft one; 506, large caster fixing part; 507, large caster bracket; 508, connecting shaft two; 509, torsion spring one; 510, torsion spring two; 601, storage cover; 602, knob switch. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] like Figure 1 A multifunctional folding tool cart shown in the figure includes a load-bearing unit A, a large caster control unit B, a telescopic handle unit C, a folding unit D, a caster automatic rebound unit E and a storage unit F; the large caster control unit, the caster automatic rebound unit and the storage unit are installed on a load-bearing platform; the large caster control unit is installed on the load-bearing unit through a support plate, and a button cover is embedded in the support plate, and a button trigger assembly connected to the large caster bracket is installed in the button cover to control the expansion and folding of the large caster; the caster automatic rebound unit is installed on the load-bearing unit through a connecting bottom rod, and the connecting bottom rod is provided with a large caster rebound assembly and a small caster rebound assembly that automatically rebound the caster to a folded state, and the small caster rebound assembly is rotatably connected to the folding unit to realize the folding and expansion of the tool cart; the folding unit includes a spring tooth clamp assembly and a combination connector for maintaining the folded state, and is connected to the telescopic handle unit through the combination connector; the telescopic handle unit includes a connecting iron rod and a telescopic handle telescopically arranged in the connecting iron rod through a handle fixing member; the storage unit forms an openable storage space in the middle of the load-bearing unit.

[0029] like Figure 2The illustrated large caster control unit includes a support plate 201, within which is embedded a button cover 204. A button trigger assembly is mounted within the button cover 204. The button trigger assembly includes a button 1 205 centrally mounted within the button cover 204, and two latches 1 202 symmetrically mounted within the button cover 204. The two latches 1 202 abut against the inclined surfaces formed by the left and right ends of the button 1 205 at corresponding positions. A spring 1 203 is mounted between the two latches 1 202. The elastic force of the spring 1 203 causes the two latches 1 202 to pass through the ends of the button cover 204 and plug into a large caster bracket 507 that can be deployed on the load-bearing plate 101 of the load-bearing unit. Pressing the button 1 drives the latch 1 inward under the action of force, pulling the support plate. When the button 1 is fully pulled, the latch 1 is released, and the spring 1 causes the latch 1 to move outward, plugging into the opening of the large caster bracket, thereby securing the support plate. At the same time, when the support plate is pulled up, it will drive the large caster bracket to rotate 90 degrees, thereby fixing the large wheel fixing parts. The effect is as follows: Figure 7 shown.

[0030] like Figure 3 The telescopic handle unit shown includes a connecting iron rod 301 and a telescopic handle 303 telescopically arranged in the connecting iron rod 301 through a handle fixing piece 302, and a handle telescopic trigger assembly is installed in the handle fixing piece 302. The handle telescopic trigger assembly includes a button 2 304 centrally installed in the handle fixing piece 302, and also includes two latches 2 305 symmetrically installed in the handle fixing piece 302. The two latches 2 305 abut against the inclined surfaces formed by the left and right ends of the button 2 304 at corresponding positions, and a spring 2 306 is installed between the two latches 2 305. The elastic force of the spring 2 306 causes the two latches 2 305 to pass through the sleeve 307 of the handle fixing piece 302 and out. The sleeve 307 is sleeved on the connecting iron rod 301 to form a fixed connection. The telescopic handle 303 is passed through the sleeve 307 and a number of positioning holes are opened. The latches 2 305 are inserted into the positioning holes of the telescopic handle 303.

[0031] like Figure 4The folding unit shown includes a spring tooth clamp assembly and a combined connecting piece. The spring tooth clamp assembly includes an iron shaft 401, a spring fixing piece 402 passing through the middle of the iron shaft 401, and tooth clamps 403 passing through both ends of the iron shaft 401. The spring fixing piece 402 and the tooth clamp 403 are abutted against each other through spring three 404. The combined connecting piece includes an integrally connected tooth clamp part 405, a connecting part 406 and an abutting part 407. The teeth formed on the end face of one end of the tooth clamp part 405 are engaged with the tooth clamp 403. The other end of the tooth clamp part 405 is rotatably connected to the caster automatic rebound unit. The connecting part 406 is fixedly connected to the connecting iron rod 301, and the abutting part 407 abuts against the caster automatic rebound unit. When in use, push the two tooth clamps inwards by hand, and the tooth clamps will be out of meshing relationship with the tooth clamps. The connecting iron can be rotated. The tooth clamps and the tooth clamps have corresponding teeth. When they are turned to the matching angle, they will bite each other under the action of spring three to form three angles, namely 0 degrees, 90 degrees, and 180 degrees. At 0 degrees and 180 degrees, the caster is in the state of retracting. At 0 degrees, the caster is in the state of retracting. Figure 1 As shown, 180 degrees Figure 9 As shown, at 90 degrees, the caster bracket will open under the push of the combined connector, thereby driving the caster to open, the effect is as follows Figure 8 shown.

[0032] like Figure 5 The caster automatic rebound unit shown includes a small caster rebound assembly and a large caster rebound assembly mounted on the connecting bottom rod 501. The small caster rebound assembly includes a small caster fixing part 502 fixedly mounted on the connecting bottom rod 501, a small caster bracket 503 flipably arranged on the small caster fixing part 502 through a spring flip assembly, and the small caster bracket 503 is used to install the small caster. The spring flip assembly includes a bracket fixing part 504 connected to the small caster bracket 503, and the bracket fixing part 504 is hinged to the small caster fixing part 502 through a connecting shaft 505. A torsion spring 509 is sleeved on the connecting shaft 505; the large caster rebound assembly includes The large caster fixing part 506 is fixedly mounted on the connecting bottom rod 501, and the large caster bracket 507 is flipably arranged on the large caster fixing part 506 through a spring flip component 2. The spring flip component 2 includes a connecting shaft 2 508. The large caster bracket 507 is hinged to the large caster fixing part 506 through the connecting shaft 2 508. A torsion spring 2 510 is sleeved on the connecting shaft 2 508. After the torsion spring 1 and the torsion spring 2 are installed, an inward force will be generated to cause the wheels at the corresponding positions to automatically rebound. Therefore, when the small caster bracket loses the abutment of the combined connecting part and the large caster bracket loses the matching relationship with the handle telescopic trigger component, it can automatically rebound.

[0033] like Figure 6The storage unit shown includes a storage space formed in the middle of the load-bearing plate, an openable storage cover 601 is arranged above the storage space, and also includes a knob switch 602 that is rotatably arranged in the load-bearing plate 101 to fix the storage cover 601. When the rotating boss on the knob switch 602 is rotated to a specific position, the storage cover 601 can be pressed down and clamped.

[0034] In summary, this multifunctional folding tool cart integrates multiple functions such as load-bearing, large caster control, telescopic handle, folding, automatic caster rebound and storage, which allows it to be used in a variety of occasions and increases flexibility of use. The design of the large caster control unit and the telescopic handle unit allows users to easily unfold and fold the tool cart, while supporting multiple deformation methods and requiring no complicated operating steps. The design of the automatic caster rebound unit allows the tool cart to automatically return to the folded state when not in use, saving space and reducing the operator's labor intensity. The design of the storage unit provides additional storage space for users to store tools or other items. Overall, the design of this multifunctional folding tool cart takes into account both practicality and convenience, and is suitable for use in a variety of environments.

[0035] The above-mentioned implementation manner is not a limitation of the present invention, and the present invention is not limited to the above-mentioned examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A multifunctional folding tool cart, characterized in that: It includes a load-bearing unit, on which a large caster control unit, a caster automatic rebound unit and a storage unit are installed; The large caster control unit is installed on the load-bearing unit through a supporting plate, a button cover is embedded in the supporting plate, and a button trigger component connected to the large caster bracket is installed in the button cover to control the expansion and folding of the large caster; The caster automatic rebound unit is installed on the load-bearing unit through a connecting bottom rod, and the connecting bottom rod is provided with a large caster rebound component and a small caster rebound component that enable the caster to automatically rebound to a folded state. The small caster rebound component is rotatably connected to the folding unit to realize the folding and unfolding of the tool cart; The folding unit includes a spring tooth clamp assembly and a combined connector for maintaining a folded state, and is connected to the telescopic handle unit via the combined connector; The telescopic handle unit includes a connecting iron rod and a telescopic handle telescopically arranged in the connecting iron rod through a handle fixing piece; The storage unit forms an openable storage space in the middle of the load-bearing unit.

2. The multifunctional foldable tool cart according to claim 1, characterized in that: The large caster control unit includes a support plate (201), a key cover (204) is embedded in the support plate (201), a button trigger assembly is installed in the key cover (204), and the button trigger assembly includes a button one (205) centrally installed in the key cover (204), and also includes two latches one (202) symmetrically installed in the key cover (204), the two latches one (202) abut against the inclined surfaces formed by the left and right ends of the button one (205) at corresponding positions, and a spring one (203) is installed between the two latches one (202), and the elastic force of the spring one (203) causes the two latches one (202) to pass through the two ends of the key cover (204) and connect with the large caster bracket (507).

3. The multifunctional foldable tool cart according to claim 1, characterized in that: The telescopic handle unit comprises a connecting iron rod (301) and a telescopic handle (303) telescopically arranged in the connecting iron rod (301) through a handle fixing member (302), a handle telescopic trigger assembly is installed in the handle fixing member (302), and the handle telescopic trigger assembly comprises a button 2 (304) centrally installed in the handle fixing member (302), and also comprises two second latches (305) symmetrically installed in the handle fixing member (302), the two second latches (305) are in corresponding positions with the button 2 The inclined surfaces formed at the left and right ends of (304) are in contact with each other, and a spring (306) is installed between the two second latches (305). The elastic force of the spring (306) causes the two second latches (305) to pass through the sleeve (307) of the handle fixing member (302). The sleeve (307) is sleeved on the connecting iron rod (301) to form a fixed connection. The telescopic handle (303) is penetrated by the sleeve (307) and is provided with a plurality of positioning holes. The second latch (305) is inserted into the positioning hole of the telescopic handle (303).

4. The multifunctional foldable tool cart according to claim 1, characterized in that: The folding unit comprises a spring tooth clamp assembly and a combined connecting piece. The spring tooth clamp assembly comprises an iron shaft (401), a spring fixing piece (402) passing through the middle of the iron shaft (401), and tooth clamps (403) passing through both ends of the iron shaft (401). The spring fixing piece (402) and the tooth clamp (403) are in contact with each other via a spring three (404). The combined connecting piece comprises an integrally connected tooth clamp portion (405), a connecting portion (406), and an abutting portion (407). The teeth formed on one end surface of the tooth clamp portion (405) are engaged with the tooth clamp (403). The other end of the tooth clamp portion (405) is rotatably connected to the caster automatic rebound unit. The connecting portion (406) is fixedly connected to the connecting iron rod (301), and the abutting portion (407) abuts against the caster automatic rebound unit.

5. The multifunctional foldable tool cart according to claim 1, characterized in that: The caster automatic rebound unit comprises a small caster rebound assembly and a large caster rebound assembly mounted on a connecting bottom rod (501); the small caster rebound assembly comprises a small caster fixing member (502) fixedly mounted on the connecting bottom rod (501); a small caster bracket (503) flipably arranged on the small caster fixing member (502) via a spring flip assembly; the small caster bracket (503) is used to mount the small caster; the spring flip assembly comprises a bracket fixing member (504) connected to the small caster bracket (503); the bracket fixing member (504) is hinged to the small caster bracket via a connecting shaft (505). On the small caster fixing part (502), a torsion spring (509) is sleeved on the connecting shaft (505); the large caster rebound assembly includes a large caster fixing part (506) fixedly mounted on the connecting bottom rod (501), a large caster bracket (507) flipably arranged on the large caster fixing part (506) through a spring flip assembly (2), the spring flip assembly (2) includes a connecting shaft (508), the large caster bracket (507) is hinged to the large caster fixing part (506) through the connecting shaft (508), and a torsion spring (510) is sleeved on the connecting shaft (508).

6. The multifunctional foldable tool cart according to claim 1, characterized in that: The storage unit comprises a storage space formed in the middle of a load-bearing plate, an openable storage cover (601) is provided above the storage space, and a knob switch (602) is provided in the load-bearing plate (101) to fix the storage cover (601), wherein the rotating boss on the knob switch (602) can press down and clamp the storage cover (601) when it is rotated to a specific position.

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