WO2019076174A1

WO2019076174A1 - Multi-functional cart

Info

Publication number: WO2019076174A1
Application number: PCT/CN2018/105943
Authority: WO
Inventors: 王钦兵
Original assignee: 王钦兵
Priority date: 2017-10-16
Filing date: 2018-09-17
Publication date: 2019-04-25

Abstract

Provided is a multi-functional cart, comprising a supporting panel (100), a push rod (101) and casters (102) arranged at the bottom of the supporting panel (100), wherein the push rod (101) is of a detachable structure; the supporting panel (100) is provided with a push rod accommodation space for accommodating the push rod (101), and a push rod positioning member (120) for positioning the push rod (101) in the push rod accommodation space; and the supporting panel (100) is provided at the same time with a clamping hole (106), and provided with a locking member capable of fixing the push rod (101) in the clamping hole (106). The multi-functional cart can conveniently realize the retracting and releasing of the push rod, therefore reducing the occupied space of the cart; the multi-functional cart is provided with a caster structure, and can also be converted to a table or stool for usage, which is convenient to retract and release, with a simple procedure.

Description

Multifunctional cart

Technical field

The present invention relates to a cart, and in particular to a multi-function cart.

Background technique

The cart is mainly used for transporting goods, and generally includes a support panel, a push rod (or called an armrest, a handle, etc.), a caster, and the like. The number of casters is generally three to four. When not in use, in order to save space and facilitate storage, most push rods of carts can generally be folded over the support panel. The current cart takes up a lot of space and has a single function.

Summary of the invention

The invention provides a multifunctional cart, which can be put into the support panel when not in use, so that the cart becomes a plate-like structure, which is convenient for retracting and transporting. At the same time, the stowed cart can be used as a support plate to facilitate the storage of items.

The technical solution of the present invention is further described below:

A multifunctional cart includes a support panel, a push rod and a caster disposed at a bottom of the support panel, wherein the push rod is a detachable structure; and the support panel is provided with a push rod storage space for accommodating the push rod, And a push rod positioning member for positioning the push rod in the push rod storage space; the support panel is simultaneously provided with a snap hole and a locking member for fixing the push rod in the snap hole.

Preferably, the push rod storage space is provided on a bottom surface of the support panel. It further facilitates the use of the cart. It is also convenient for use as a support plate.

Preferably, the push rod is a telescopic structure. The height of the push rod can be adjusted according to actual needs to facilitate the use of various occasions and various height users. At the same time, the telescopic structure also facilitates the storage of the push rod, saving the putter storage space. The telescopic structure is generally composed of a plurality of sleeves which are sleeved and slidably disposed on each other, and the top is a handle of the push rod. A plurality of sleeves are provided with a relatively fixed limiting structure, such as a structure in which the protrusions and the grooves are matched.

In the present invention, the push rod can receive thrust or tension to drive the cart.

Preferably, the support panel is provided with a caster storage space for accommodating the casters; the casters are mounted on the support panel by a hinged seat, the casters have a first working position arranged perpendicularly to the support panel after being unfolded, and folded a second working position placed in the caster accommodation space; the support panel is simultaneously mounted with a caster lock that holds the caster in the first working position or in the second working position.

In the first working position, the casters are perpendicular to the support panel, in a state in which the cart is in normal use. When the trolley is not needed, or when the caster is not needed, the caster can be placed in the caster storage space, that is, the caster is in the second working position state. With the above technical solution, the cart of the present invention can be used as a conventional cart, that is, the casters and the push rods are all in a normal working state, and the push rod can also be put away, and the cart is used as a turtle cart without a putter. Use; of course, the putter and casters can all be stored, and the cart can be used as a support plate.

Preferably, further comprising a caster seat for mounting the caster, the caster seat is provided with a hinge hole for hinged with the hinge seat and a locking hole; the caster lock member is a slide seat slidably disposed on the support panel, At least one locking bar is disposed on a side of the sliding seat facing the locking hole, and the sliding seat is axially reciprocable along the locking bar; the locking hole is at least two, and at least when the caster is in the first working position a locking hole coincides with a locking hole position when the caster is in the second working position, and is opposite to the locking bar; when the caster is in the first working position or the second working position, the locking bar is inserted The positioning of the casters is achieved in the correct locking holes.

In the present invention, the caster can be a one-way wheel or a universal wheel or the like, or a part of a one-way wheel part, a universal wheel, etc., and the installation of the hinged seat is realized by the caster seat.

In the free state, the caster seat can be rotated in the hinge seat. In order to realize the positioning of the caster seat, the positioning of the caster is finally realized, and the locking hole does not coincide with the hinge hole, and when the lock lever is inserted into the corresponding locking hole (the locking hole aligned with the first working position or the second working position) After that, the stable positioning of the casters is achieved by the joint action of the hinge shaft and the lock lever.

Preferably, the lock bars are at least two; the locking holes are at least three, and at least two lock holes when the casters are in the first working position and two when the casters are in the second working position The locking holes are coincident in position and face the lock bar. At least two lock levers are used to further increase the stability of the lock. Further preferably, the locking holes are three, the three locking holes are equal to the center distance of the hinge holes, and the lines connecting the three locking holes and the center of the hinge holes are sequentially set at 90 degrees.

Preferably, a sliding seat limiting rod is fixed on the supporting panel, and the sliding seat is provided with a sliding seat limiting hole through which the sliding seat limiting rod passes. The sliding seat limiting hole is a horizontally disposed waist hole or a strip hole, and the sliding seat limiting rod realizes the positioning and positioning of the sliding seat, and also plays a limiting role, thereby realizing the two motion limits of the sliding seat. Limited.

Preferably, a thrust elastic member is disposed between the sliding seat and the support panel. The setting of the thrust elastic member is used to prompt the slider to move in the direction of the hinge seat, and the positioning of the lock rod to the caster seat and the caster is quickly realized. The thrust elastic member is generally a spring member.

Preferably, a reset torsion spring is arranged between the caster seat and the hinge seat. By using the reset torsion spring, the caster in the free state can be quickly rotated to the vertical working state, that is, to reach the first working position.

Preferably, the locking member comprises: a base fixed on the support panel; two moving blocks slidably disposed in the base; two coaxially disposed latches disposed on the base, one end of the two latches being opposite The protruding base is inserted into the engaging hole, and the other end is fixed with the corresponding moving block; the bottom of the push rod is provided with a push rod positioning hole that can cooperate with the protruding end of the plug; The pin has a first working position extending into the engaging hole to cooperate with the push rod positioning hole, and a second working position for releasing the push rod after contracting.

In the present invention, the bottom of the support panel is provided with an accommodation space for mounting the base. The base is mounted in the accommodating space by a screw member or the like. A cavity is provided in the base to provide a moving space for the moving block and the plug.

Preferably, the utility model further comprises a handle, the handle is a detachable structure; the support panel is provided with a handle storage space for accommodating the handle, and a handle positioning member for positioning the handle in the handle storage space; The handle is positioned within the snap hole.

Preferably, the bottom of the handle is provided with a handle positioning hole that can cooperate with the protruding end of the plug; under the driving of the moving block, the plug has a protruding insertion hole and can cooperate with the handle positioning hole for positioning. The first working position, and the second working position that releases the handle after contraction.

In the invention, the fixing of the push rod can be realized by using the locking member, and the fixing of the handle can be realized, and the push rod and the handle share one card connecting hole, and the progress of the supporting panel is reduced by one step. And when the push rod or the handle is fixed, the working state and working principle of the locking member are the same.

In the present invention, the bottom ends of the two moving blocks are inserted into the base, and the top end protrudes from the top of the base to facilitate adjustment of the moving block by an external force. A sleeve is respectively mounted on two sides of the base, and the two pins are respectively sleeved in the corresponding sleeves, and the stability of the axial movement of the bolt is further ensured by the sleeve, and the pin is prevented from shaking.

Preferably, the moving block is provided with a moving block limiting rod, and the base is provided with a moving block limiting hole for the moving block limiting rod to pass through. The moving block limit hole is generally a strip hole. By moving the block limit rod and the moving block limit hole, the limit position of the moving block movement limit can be realized, and the limit block movement can be prevented from exceeding the set position. The moving block limit bar is generally placed perpendicular to the pin. The moving block limit lever can be set to two or more.

Preferably, a latch return spring is disposed between the moving block and the base. The use of the pin return spring allows the moving block and the latch to quickly reach the first working position, enabling positioning of the push rod or handle. Two latch springs can be set, corresponding to the corresponding moving blocks. Of course, only one can be set. For example, it can be set between two moving blocks, and the outward thrust can be used to realize the reset of the moving block.

When the push rod or the handle is inserted into the snap hole, the moving block is released, and the latch will quickly pass through the escape hole provided at the bottom of the snap hole under the elastic force of the latch return spring, and further inserted into the push rod or the push set at the bottom of the handle. The rod positioning hole or the handle positioning hole is used, and the position of the push rod or the periphery of the handle is used by the snap hole to realize the positioning of the push rod and the handle.

Preferably, the support panel has two support legs hinged at the bottom; the support legs include: two fixed tubes hinged on the support panel; and a telescopic tube that is slidably disposed with the fixed tube; realizes the fixed tube and the telescopic tube A support leg lock member positioned between the tubes; the support panel is provided with a support leg storage space for receiving the support leg. According to the above aspect, the cart of the present invention can be deformed into a table or a stool. In this case, the caster, the tie rod, the handle, and the like can be accommodated in the corresponding storage space at the bottom of the support panel.

Preferably, a latching plug for blocking the latching hole is further included, and the latching plug is provided with a latching plug positioning hole. The bottom of the support panel is provided with a snap-hole storage space for accommodating the snap-in plug. When used as a table or stool, the snap-in plug can be used to block the snap-in holes, so that the support panel forms a complete plate-like structure.

Advantageously, said support foot lock comprises:

a crossbar fixed to the two fixed tubes;

Sliding two moving latches and two moving buttons disposed in the crossbar, the opposite ends of the two moving latches are respectively fixed with the corresponding moving buttons, and the opposite ends can pass out the fixing tube;

The two moving pins have a first working position in which the telescopic tube is inserted away from each other to realize mutual fixation of the telescopic tube and the fixed tube, and a second working position of the telescopic tube.

In the present invention, the two moving pins can be disposed coaxially and symmetrically disposed in the cavity inside the cross bar. Preferably, a retaining member is disposed between the telescopic tube and the fixed tube. The bottoms of the two moving buttons are located in the cavity of the crossbar, and the top protrudes from the crossbar to facilitate adjustment of the moving button by an external force.

Preferably, the cross bar is fixed on the fixed pipe by a T-shaped pipe member, and one end of the T-shaped pipe member is horizontally disposed, and the end is provided with a through hole for the moving pin to pass through, and the cross bar is fixed to the outer wall of the end; the T-shaped pipe member is The two ends are vertically disposed and fixed to the fixed pipe, and are sleeved on the outer wall of the telescopic pipe to play a role of limiting the guiding of the telescopic pipe to avoid swaying when the telescopic pipe moves telescopically.

For other preferred aspects and details of the support foot, refer to the relevant part of "a multifunctional table", and the detailed description will not be repeated again.

Preferably, the support panel is composed of two sub-boards hinged to each other; the support panel is provided with a folding positioning member for positioning the two sub-boards in a folded state, and positioning the two sub-boards in a horizontally extended state. Extend the positioning piece. In the folded state, the handle can be used for carrying and the like.

For other preferred aspects and details of the folding positioning member and the stretching positioning member, the splicing fixing member and the like, refer to the relevant parts of "a multifunctional turtle car" and "a multifunctional table", and the details are not repeated here. Said.

The multifunctional cart of the invention can conveniently realize the retracting and releasing of the push rod, reduce the occupied space of the cart, and can be used as a turtle car or a support board, and has more comprehensive functions and more practicality. The multifunctional cart of the invention can be converted into a table or a stool, and is convenient to retract and put, and the program is simple. At the same time, when used as a table or stool, the height of the support feet is adjustable, suitable for use in various occasions. The multifunctional cart of the present invention can be further folded into a smaller and more compact luggage structure when not in use, which further facilitates transportation and storage, and the use of the handle can further facilitate the user to carry. The multifunctional cart of the invention can be retracted and placed, which is more convenient for storing and transporting the cart, avoiding damage to the casters during storage and transportation, and also facilitating the use of the cart as other tools.

The invention provides a multifunctional turtle car, which can store the casters in the support panel when not in use, so that the cart becomes a plate-like structure, which is convenient for retracting and transporting. At the same time, the turtle car itself can be freely spliced.

The technical solution of the present invention is further described below:

A multifunctional turtle car comprising a support panel and a caster disposed at a bottom of the support surface, wherein the support panel is provided with a splicing fixing member, and the plurality of support panels can be freely spliced; the bottom of the support panel is provided with a caster storage space; The caster is mounted on the support panel by a hinged seat, the caster has a first working position that is disposed perpendicular to the support panel after deployment, and a second working position that is folded and received in the caster accommodation space.

The multifunctional turtle car of the invention can quickly realize the splicing of a plurality of turtle cars through the splicing fixing member, and can meet the needs of various use occasions. At the same time, the casters can be conveniently stored, which saves storage space, and is convenient for transportation and storage. At the same time, the turtle car can be used as a panel, which makes the turtle car more practical.

Preferably, the support panel is composed of two sub-boards hinged to each other; the support panel is provided with a folding positioning member for positioning the two sub-boards in a folded state, and positioning the two sub-boards in a horizontally extended state. Extend the positioning piece. With this technical solution, the turtle car of the present invention can be further folded into a "luggage" type structure when not in use, which further facilitates transportation and storage while reducing the occupied area.

Preferably, the extension positioning member comprises a bump and a card slot structure respectively disposed on the hinge sides of the two daughter boards and cooperating with each other. Further preferably, the bumps and the card slots are provided in pairs. The structure of the bump and the card slot is adopted. On the one hand, after the two daughter boards are unfolded, the bumps on one of the daughter boards are caught in the card slots of the adjacent daughter boards on the same support panel, and the two daughter boards can no longer rotate further. Secure the two daughter boards in a horizontally unfolded state. On the other hand, after the two sub-boards are folded into place, a "trunk" structure is formed, and the bumps serve as support legs for the "luggage" structure to ensure the stability of the turtle after folding.

Preferably, the extension positioning member comprises:

a hinge hole and a receiving hole disposed on a side of one of the sub-boards perpendicular to the hinge side;

a positioning hook disposed in the hinge hole for axial movement and circumferential rotation;

a positioning hole disposed on a side of the other sub-board perpendicular to the hinge side;

The positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and a mounting working position in which the hook portion is inserted into the positioning hole on the adjacent sub-board to realize positioning of the two sub-boards.

In the present invention, the "hinged side" refers to the side on which the hinged shaft or the hinged hole is provided on the sub-board. The "one side perpendicular to the hinge side" means the side adjacent to the "hinged side".

The extension positioning members of the above two structures may be individually selected or may be used at the same time. Further preferably, the extension positioning members include the above two types. That is, the above two structures are simultaneously used to realize the positioning of the horizontal extension state of the daughter board. As a further preference, after the two daughter boards are fully deployed, the two daughter boards form a complete board structure. The hinge hole and the receiving hole and the positioning hole are located at the same height, and the receiving hole and the positioning hole are symmetrically disposed along the center of the hinge hole. After the two sub-boards are fully deployed, the positioning hooks are lifted from the receiving holes, rotated by 180 degrees, and the positioning hooks are inserted into the positioning holes to avoid rotation and movement between the two sub-boards.

Preferably, the hinge hole is provided with a positioning hook axial return spring and an axial retaining member. The positioning hook axial return spring is arranged, and after the positioning hook is pulled out, the positioning hook axial return spring generates an inward pulling force on the positioning hook, and after releasing the positioning hook, the positioning hook can be promptly entered into the receiving hole or the positioning hole. Inside, and avoid the positioning hook from falling out of the receiving hole or positioning hole. The axial retaining member is a positioning protrusion disposed at the bottom of the positioning hook, and the positioning hole is disposed in the hinge hole to prevent the positioning hook from falling out of the hinge hole.

Preferably, the support panel is provided with a pair of hinge holes and receiving holes, and a positioning hook disposed in the hinge hole for axial movement and circumferential rotation; and the support panel is further provided with a positioning hole When the splicing is required, the positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and a mounting working position in which the hook portion is inserted into the positioning hole on the adjacent supporting panel to realize positioning of the two supporting panels. The hinge hole, the receiving hole and the positioning hook constitute the above-mentioned splicing fixing member, which facilitates the splicing between the plurality of supporting panels. Preferably, for one sub-board, the receiving hole can also serve as a positioning hole for the positioning hook of the other sub-board.

In the present invention, the splicing fixture and the extension locating member can adopt the same structure. Preferably, the hinge hole is provided with a positioning hook axial return spring and an axial retaining member. For the structure of the positioning hook axial return spring and the axial retaining member, refer to the relevant contents of the extension positioning member.

Preferably, the utility model further comprises a handle, the handle is a detachable structure; the support panel is provided with a handle storage space for accommodating the handle, and a handle positioning member for positioning the handle in the handle storage space; the support panel At the same time, there are a snap hole and a locking member for fixing the handle in the snap hole. The handle can be fixed in the snap hole of the support panel to facilitate moving the turtle car. At the same time, when the turtle car is folded, the handle can be used to facilitate the carrying and handling of the turtle car. When not in use, the handle can be stored in the handle storage space.

Preferably, the turtle car further includes a push rod, the push rod is a detachable structure; the support panel is provided with a push rod storage space for accommodating the push rod, and positioning the push rod in the putter storage space a push rod positioning member; the locking member can position the push rod in the snap hole. In order to facilitate the push of the turtle car, the push rod can be fixed in the snap hole of the support panel to facilitate moving the turtle car. When not in use, the push rod can be stored in the putter storage space. The turtle can be mounted on the push rod, or it can be installed at the same time, and can be adjusted according to actual needs. Preferably, the push rod storage space is provided on a bottom surface of the support panel. It further facilitates the use of turtle cars. It is also convenient for use as a support plate. Preferably, the push rod is a telescopic structure. The height of the push rod can be adjusted according to actual needs to facilitate the use of various occasions and various height users. The telescopic structure is generally composed of a plurality of sleeves which are sleeved and slidably disposed on each other, and the top is a handle of the push rod. A plurality of sleeves are provided with a relatively fixed limiting structure, such as a structure in which the protrusions and the grooves are matched. In the present invention, the push rod can receive thrust or pulling force to drive the turtle car.

In the present invention, the support panel is simultaneously mounted with a caster lock that holds the caster in the first working position or in the second working position. In the first working position, the casters are perpendicular to the support panel and are in a state in which the turtle car is normally used. When it is not necessary to use a turtle car, or when it is not necessary to use a caster, the caster can be placed in the caster storage space, that is, the caster is in the second working position state. According to the above technical solution, the turtle car of the present invention can be used as a conventional cart, that is, the casters and the push rods are all in normal working condition, and the putter can also be put away and used as a turtle car; of course, it can also be The putter and casters are all stored, and the turtle car is used as a support plate.

Preferably, a thrust elastic member is disposed between the sliding seat and the support panel. The thrust elastic member is arranged to prompt the slider to move in the direction of the hinge seat, and the positioning of the lock lever to the caster seat and the caster is quickly realized. The thrust elastic member is generally a spring member.

Preferably, the utility model further comprises a handle, the handle is a detachable structure; the support panel is provided with a handle storage space for accommodating the handle, and a handle positioning member for positioning the handle in the handle storage space; The handle is positioned within the snap hole. Preferably, the bottom of the handle is provided with a handle positioning hole that can cooperate with the protruding end of the plug; under the driving of the moving block, the plug has a protruding insertion hole and can cooperate with the handle positioning hole for positioning. The first working position, and the second working position that releases the handle after contraction.

In the invention, the fixing of the push rod can be realized by using the locking member, and the fixing of the handle can be realized, and the push rod and the handle share one card connecting hole, and the progress of the supporting panel is reduced by one step. And when the push rod or the handle is fixed, the working state and working principle of the locking member are the same. In the present invention, the bottom ends of the two moving blocks are inserted into the base, and the top end protrudes from the top of the base to facilitate adjustment of the moving block by an external force. A sleeve is respectively mounted on two sides of the base, and the two pins are respectively sleeved in the corresponding sleeves, and the stability of the axial movement of the bolt is further ensured by the sleeve, and the pin is prevented from shaking.

Preferably, the support panel has two support legs hinged at the bottom; the support legs include: two fixed tubes hinged on the support panel; and a telescopic tube that is slidably disposed with the fixed tube; realizes the fixed tube and the telescopic tube A support leg lock member positioned between the tubes; the support panel is provided with a support leg storage space for receiving the support leg.

According to the above aspect, the turtle car of the present invention can be deformed into a table or a stool. In this case, the caster, the tie rod, the handle, and the like can be housed in the corresponding storage space at the bottom of the support panel.

Advantageously, said support foot lock comprises:

a crossbar fixed to the two fixed tubes;

In the present invention, the two moving pins can be disposed coaxially and symmetrically disposed in the cavity inside the cross bar.

Preferably, a retaining member is disposed between the telescopic tube and the fixed tube. The bottoms of the two moving buttons are located in the cavity of the crossbar, and the top protrudes from the crossbar to facilitate adjustment of the moving button by an external force.

Preferably, the cross bar is fixed on the fixed pipe by a T-shaped member, and one end of the T-shaped member is horizontally disposed, and the end is provided with a through hole for the moving pin to pass through, and the cross bar is fixed to the outer wall of the end; The two ends are vertically disposed and fixed to the fixed pipe, and are sleeved on the outer wall of the telescopic pipe to play a role of limiting the guiding of the telescopic pipe to avoid swaying when the telescopic pipe moves telescopically.

Compared with the prior art, the beneficial effects of the present invention are embodied in:

The multifunctional turtle car of the invention can accommodate the casters, which is more convenient for storing and transporting the turtle car, and avoiding damage to the casters during storage and transportation. At the same time, the support panel can easily realize multiple splicing, ensuring that the turtle car can meet the needs of various occasions.

The multifunctional turtle car of the present invention can be used as a cart by installing a push rod on a support panel. At the same time, it is convenient to realize the retracting and putting of the putter, reducing the occupied space of the turtle car, and can be used as a turtle car or a support plate, and the function is more comprehensive and practical.

The multifunctional turtle car of the invention can be converted into a table or a stool, and is convenient to retract and put, and the program is simple. At the same time, when used as a table or stool, the height of the support feet is adjustable, suitable for use in various occasions.

The multifunctional turtle car of the invention can be further folded into a smaller and more compact luggage structure when not in use, which further facilitates transportation and storage, and the use of the handle can further facilitate the user to carry.

The invention provides a multifunctional table, which can be stored in the support panel when not in use, so that the cart becomes a plate-like structure, which is convenient for retracting and transporting. At the same time, the height of the support feet is adjustable, which is suitable for various users and suitable occasions.

The technical solution of the present invention is further described below:

A multifunctional table includes a support panel, and two support legs are hinged at the bottom of the support panel; the support legs include:

Two fixed tubes hinged on the support panel;

a telescopic tube that is slidably disposed with a fixed tube;

A support leg locking member for positioning the fixed tube and the telescopic tube;

The support panel is provided with a support leg storage space for accommodating the support legs.

Advantageously, said support foot lock comprises:

a crossbar fixed to the two fixed tubes;

In the present invention, the cross bar is a cavity structure, and the two ends are respectively fixed to the fixed pipe, and the two moving pins are coaxial and symmetrically disposed in the cavity inside the cross bar.

Preferably, a retaining member is disposed between the telescopic tube and the fixed tube. The retaining member is generally a bump structure disposed at the end of the telescopic tube, and the fixing tube is generally provided with a boss structure defining a bump.

The bottoms of the two moving buttons are located in the cavity of the crossbar, and the top protrudes from the crossbar to facilitate adjustment of the moving button by an external force.

Preferably, the bottom end of the fixing tube is fixed with a T-shaped pipe member, the horizontal portion of the T-shaped pipe member is fixed in the fixed pipe, and at the same time, the outer wall of the telescopic pipe is formed to form a guiding cylinder, and the end portion of the vertical portion of the T-shaped pipe member is fixed and fixed. The tube wall is fixed to one end of the corresponding crossbar, and the end is provided with a guiding hole through which the moving pin passes.

In the present invention, the T-shaped pipe member is actually turned over by 90 degrees, that is, its horizontal section is vertically disposed in the fixed pipe, and its vertical section is horizontally disposed. While the horizontal section of the T-shaped pipe fitting is fixed to the crossbar, it also acts as a limit guiding for the telescopic pipe, and avoids shaking when the telescopic pipe is telescopically moved. Through the guide hole in the T-shaped pipe fitting, the moving pin can be stably moved in the set direction to avoid the offset of the moving pin.

Preferably, the telescopic tube is provided with a plurality of sets of telescopic positioning holes for inserting the moving pins. The heights of the telescopic positioning holes of each group are different. During the adjustment process of the telescopic tube, it can be adjusted to different heights according to the needs, and then the positioning of the support legs can be adjusted and fixed by moving the pins and positioning telescopic positioning holes of corresponding heights.

Preferably, the utility model further comprises a handle, the handle is a detachable structure; the support panel is provided with a handle storage space for accommodating the handle, and a handle positioning member for positioning the handle in the handle storage space; the support panel At the same time, a snap hole is provided, and a locking member that can fix the handle in the snap hole; the locking member can position the handle in the snap hole. The carrying of the table of the present invention is further facilitated by the arrangement of the handle. When the handle is needed, the handle can be taken out from the handle storage space and then installed in the snap hole on the support panel. When it is not needed, the handle can be stored in the handle storage space, which further saves space for the handle storage.

In the present invention, when not in use, the support legs of the table can be housed in the support foot storage space, which further saves space, and the table can be used as a support plate. Preferably, the handle storage space, the support leg storage space, and the like are all provided on the bottom surface of the support panel. It further facilitates the use of the table. It is also convenient for use as a support plate.

Preferably, the utility model further comprises a push rod, wherein the push rod is a detachable structure; the support panel is provided with a push rod storage space for accommodating the push rod, and a push rod for positioning the push rod in the putter storage space a positioning member; the supporting panel is provided with a locking hole at the same time, and a locking member capable of fixing the push rod in the engaging hole.

Preferably, the push rod is a telescopic structure. The height of the push rod can be adjusted according to actual needs to facilitate the use of various occasions and various height users. The telescopic structure is generally composed of a plurality of sleeves which are sleeved and slidably disposed on each other, and the top is a handle of the push rod. A plurality of sleeves are provided with a relatively fixed limiting structure, such as a structure in which the protrusions and the grooves are matched.

In the present invention, the push rod can accept thrust or tension to achieve driving of the "deformed" cart.

Preferably, the bottom of the support panel is provided with casters; the support panel is provided with a caster storage space for accommodating the casters;

The caster is mounted on the support panel by a hinged seat, the caster has a first working position disposed perpendicularly to the support panel after being unfolded, and a second working position folded and received in the caster accommodation space;

A caster lock that holds the caster in the first working position or in the second working position is simultaneously mounted on the support panel.

By setting the casters, the table of the present invention can be deformed into a turtle car or a cart. In the first working position, the casters are perpendicular to the support panel and are in a state of use of the turtle car. When it is not necessary to use a turtle car, or when it is not necessary to use a caster, the caster can be placed in the caster storage space, that is, the caster is in the second working position state. With the above technical solution, the table of the present invention can be used as a conventional table, that is, the support leg is in a proper working state; or can be used as a cart, that is, the caster and the push rod are in a normal working state, and can also be pushed. The rod is stowed and the cart is used as a turtle car without a push rod; of course, the push rod, the support leg and the caster can all be stored, and the cart is used as a support plate.

Preferably, further comprising a caster seat for mounting the caster, the caster seat being provided with a hinge hole for locking with the hinge seat and a locking hole;

The caster locking member is a sliding seat disposed on the supporting panel, the sliding seat is provided with at least one locking bar on a side facing the locking hole, and the sliding seat can reciprocate axially along the locking bar;

The locking holes are at least two, and at least one of the locking holes coincides with a locking hole position when the caster is in the second working position when the caster is in the first working position, and is opposite to the locking bar ;

When the caster is in the first working position or the second working position, the locking bar is inserted into the correct locking hole to realize positioning of the caster.

Preferably, the lock bars are at least two; the locking holes are at least three, and at least two lock holes when the casters are in the first working position and two when the casters are in the second working position The locking holes are coincident in position and face the lock bar. At least two lock levers are used to further increase the stability of the lock.

Further preferably, the locking holes are three, the three locking holes are equal to the center distance of the hinge holes, and the lines connecting the three locking holes and the center of the hinge holes are sequentially set at 90 degrees.

Preferably, the sliding seat is fixed with a sliding seat limiting rod, and the sliding seat is provided with a sliding seat limiting hole through which the sliding seat limiting rod passes. The sliding seat limiting hole is a horizontally disposed waist hole or a strip hole, and the sliding seat limiting rod realizes the positioning and positioning of the sliding seat, and also plays a limiting role, thereby realizing the two motion limits of the sliding seat. limited.

Preferably, the locking member comprises:

a base fixed to the support panel;

Slide the two moving blocks set in the base;

Sliding two coaxially disposed latches disposed on the base, one end of the two latches facing away from the base can be inserted into the latching hole, and the other end is fixed to the corresponding moving block;

The bottom of the push rod is provided with a push rod positioning hole that can cooperate with the protruding end of the plug;

Driven by the moving block, the latch has a first working position extending into the engaging hole to cooperate with the push rod positioning hole, and a second working position for releasing the push rod after contracting.

Preferably, a latch return spring is disposed between the moving block and the base. The use of the pin return spring allows the moving block and the latch to quickly slam into the first working position, enabling positioning of the push rod or handle. Two latch springs can be set, corresponding to the corresponding moving blocks. Of course, only one can be set. For example, it can be set between two moving blocks, and the outward thrust can be used to realize the reset of the moving block.

Preferably, the support panel is composed of two sub-boards hinged to each other; the support panel is provided with a folding positioning member for positioning the two sub-boards in a folded state, and positioning the two sub-boards in a horizontally extended state. Extend the positioning piece. With this technical solution, the table of the present invention can be further folded into a "luggage" type structure when not in use, which further facilitates transportation and storage while reducing the occupied area. In the folded state, the handle can be used for carrying and the like.

Preferably, the extension positioning member comprises a bump and a card slot structure respectively disposed on the hinge sides of the two daughter boards and cooperating with each other. Further preferably, the bumps and the card slots are provided in pairs. The structure of the bump and the card slot is adopted. On the one hand, after the two daughter boards are unfolded, the bump cards on one daughter board are in the card slots of the adjacent daughter boards on the same support panel, and the two daughter boards can no longer be further rotated. Secure the two daughter boards in a horizontally unfolded state. On the other hand, after the two daughter boards are folded into position, a "luggage" structure is formed, and the bumps serve as support legs for the "luggage" structure to ensure the stability of the table after folding.

Preferably, the extension positioning member comprises: a hinge hole and a receiving hole disposed on a side of one of the sub-boards perpendicular to the hinge side; a positioning hook disposed in the hinge hole capable of axial movement and circumferential rotation; The other sub-board is perpendicular to the positioning hole on one side of the hinge side; the positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and the rotating hook portion is inserted into the positioning hole on the adjacent sub-board to realize two sub-bars. Board positioning installation work position.

Preferably, the hinge hole is provided with a positioning hook axial return spring and an axial retaining member. The positioning hook axial return spring is arranged, and after the positioning hook is released, the positioning hook can be promptly entered into the receiving hole or the positioning hole, and the positioning hook is prevented from falling off the receiving hole or the positioning hole by itself. The axial retaining member is a positioning protrusion disposed at a bottom of the positioning hook, and the positioning hole is provided with a positioning boss for restricting the positioning protrusion.

Preferably, the supporting panel is provided with a splicing fixing member, and the plurality of supporting panels are freely spliced; the supporting panel is provided with a pair of hinge holes and receiving holes, and is arranged in the hinge hole to be axially a positioning hook that moves and rotates in a circumferential direction; at the same time, the support panel is further provided with a positioning hole; when the splicing is required, the positioning hook has a receiving work position in which the hook portion is received in the receiving hole, and a hook portion after the rotation Inserting the positioning holes on the adjacent support panels enables the mounting work positions of the two support panels to be positioned.

The present invention also provides a caster structure including a caster, further comprising: a hinge seat; a caster seat for mounting the caster, the caster seat being provided with a hinge hole for locking with the hinge seat and a locking hole; the caster There is a first working position arranged vertically after deployment, and a second working position arranged horizontally; further comprising a caster locking member that holds the caster in the first working position or in the second working position.

Preferably, the caster locking member is a sliding seat, the sliding seat is provided with at least one locking bar on a side facing the locking hole, and the sliding seat is axially reciprocable along the locking bar; the locking hole is at least Two, and at least one of the locking holes is opposite to the locking bar when the caster is in the first working position or the second working position; when the caster is in the first working position or the second working position, The lock bar can be inserted into the right locking hole to achieve positioning of the caster.

Preferably, the lock bars are at least two; the locking holes are at least three, and when the casters are in the first working position or the second working position, there are two locking holes and the locking bar is positive Correct.

Preferably, it is mounted on a component, and the component has a sliding seat limiting rod fixed thereon, and the sliding seat is provided with a sliding seat limiting hole through which the sliding seat limiting rod passes.

Preferably, a thrust elastic member for moving the carriage toward the hinge seat is provided between the carriage and the member.

Preferably, the component is the above-described support panel. Compared with the prior art, the beneficial effects of the present invention are embodied in:

The multi-functional table of the invention can be freely retracted and supported, and the height is adjustable, and the utility model is more practical, and the table of the invention can be converted into a cart, a turtle car or a car board, and the retractable and convenient, the program is simple. After the table of the invention is deformed into a cart, the push rod can be conveniently retracted, the space occupied by the cart is reduced, and the utility model can be used as a turtle car or a support plate, and the function is more comprehensive and practical.

The multifunctional table of the present invention can be further folded into a smaller and more compact luggage structure when not in use, which further facilitates transportation and storage, and the use of the handle can further facilitate the user to carry. When the multifunctional table of the invention is deformed into a cart or a turtle car, the casters can be retracted, which facilitates the storage and transportation of the cart, avoids damage to the casters during storage and transportation, and facilitates the cart as other The tool is used.

DRAWINGS

1 is a perspective view of a multi-functional cart of the present invention; FIG. 2 is a perspective view of the multi-function cart of the present invention; FIG. 3 is a bottom view of the multi-function cart of the present invention;

FIG. 3-I is a schematic structural view of the multi-function cart of the present invention after the support panel is omitted and the cart is turned over;

4 is a structural view of the multi-function cart of the present invention when it is folded after being stored and formed into a trunk;

Figure 5 is a side view of the multifunctional cart of the present invention after being stored;

6 and FIG. 7 are respectively disassembled views of different perspectives of the multifunctional cart of the present invention;

8 and FIG. 9 are schematic structural views of the locking member for locking the push rod, wherein FIG. 8 is a schematic view showing the push rod in a free release state, and FIG. 9 is a schematic view showing the push rod in a locked state;

Figure 10 is a disassembled view of the locking member; Figure 11 is an exploded view of the locking member; Figure 12 is a schematic cross-sectional view of the locking member;

13 and FIG. 14 are schematic structural views of the locking member for locking the handle, wherein FIG. 13 is a schematic view showing the handle in a free release state, and FIG. 14 is a schematic view showing the handle in a locked state;

Figure 15 is a schematic view of the cooperation of the handle and the locking member;

Figure 16 is a schematic view showing the structure of the locking member for locking the snap hole plug;

17 is a schematic view showing a structure of a push rod, a handle, and a snap-fit plug; FIG. 18 is a schematic view showing a zoom-in structure of a push rod, a handle, and a snap-fit plug;

Figure 19 is a schematic view of the structure between the pressure plate and the support panel; Figure 20 is a separate disassembly diagram of the pressure plate; Figure 21 is a cross-sectional view of the pressure plate; Figure 22 is a sectional view of the pressure plate;

23 is a schematic structural view between a snap button and a support panel; FIG. 24 is a cross-sectional structural view between the snap button and the support panel; FIG. 25 is a cross-sectional structural view between the spring member and the support panel;

Figure 26 is a schematic view showing the structure of the present invention when the stroller is folded into a trunk;

27 is a schematic structural view of a caster and a support panel according to the present invention; FIG. 28 is a schematic structural view of the caster of the present invention; FIG. 29 is a cross-sectional structural view of the caster of the present invention;

30 is a schematic structural view of a support leg and a support panel according to the present invention; FIG. 31 is a disassembled view of the support leg of the present invention; and FIGS. 32a-32c are three state diagrams of the present invention as a table or a stool; FIGS. 33-35 are A cross-sectional view of three states of the support foot when the present invention is used as a table or a stool;

36 is a schematic structural view of a plurality of support panels assembled after the casters are deployed; FIG. 37 is a plan view of the structure shown in FIG. 36;

38 is a schematic structural view of a turtle car after adding a putter; FIG. 39 is a schematic view showing the structure of the turtle car after adding two pushers; FIG. 40 is a plan view of FIG. 39;

41 is a schematic structural view only after the casters are deployed; FIG. 42 is a schematic structural view of the base 41 after the handle is installed;

Figure 43 is a schematic view showing the structure of the support leg and the handle not overlapping after being stored;

Fig. 44 is a schematic view showing the structure in which the support legs are not provided.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings:

In this embodiment, as a special technical solution, the same structure can be adopted for the cart, the turtle car and the table. Of course, depending on the function of the product, the parts are deleted and changed.

The invention will be further described below by taking a multi-functional cart as an example.

As shown in FIG. 1, FIG. 6, and FIG. 7, a multifunctional cart includes a support panel 100, a push rod 101, and four casters 102 disposed at the bottom of the support panel 100, and also includes a convenient folding of the support panel 100. The carrying handle 103 and the two supporting legs 104 are provided at the bottom of the support panel 100.

Referring to FIG. 3, the support panel 100 also provides a push rod storage space for accommodating the push rod 101, and a handle storage space for accommodating the handle 103 while providing a load-bearing function, and is also provided for accommodating the caster 102. The caster accommodation space and the support leg storage space for accommodating the support leg 104 are further provided with a snap hole receiving space for accommodating the snap hole plug 118. Further, the push rod storage space, the handle storage space, the caster storage space, the support leg storage space, and the connection plug accommodation space are all provided at the bottom of the support panel 100. A snap hole 106 is provided at the top of the support panel 100.

Meanwhile, in addition, in FIG. 3-I, in addition to providing the storage space, the components that can be fixed thereon are as follows: the push rod 101, the caster 102, the handle 103, the support leg 104, the snap hole plug 118, the pressure plate 124, The hook 133, the snap button 134, the pop-up 135, and the like, the related components will be described one by one below.

As shown in FIG. 2, FIG. 3 and FIG. 5, after the pusher 101, the handle 103, the caster 102, and the support leg 104 are accommodated, the snap hole is blocked by the snap hole plug 118, and the entire multifunctional cart is converted into a whole. The panel structure can be used as a separate panel product. FIG. 2 is a perspective view after storage, FIG. 3 is a bottom view after storage, and FIG. 5 is a side view after storage, and the bottom surface is placed upward. Further, referring to FIG. 4 and FIG. 5, the panel structure can be further folded to form a portable "luggage" structure, and the handle 103 is more convenient for carrying the cart.

As shown in FIGS. 8-22, the structure, fixing manner and storage mode of the push rod 101 and the handle 103 and the snap hole plug 118 are first introduced:

8 and 9, referring to FIG. 3-I and FIG. 6, the top of the push rod 101 can adopt the telescopic push rod structure in the conventional luggage box, and the push rod positioning hole 105 is provided at the bottom of the push rod 101. As shown in Figures 13, 14, and 15, with reference to Figures 4 and 6, the handle 103 includes an upper hand portion 116a and a hinged rod 116b hinged to the bottom of the hand piece 116a. The bottom of the hinge rod 116b is provided with a handle positioning hole 117. As shown in FIG. 16 , referring to FIG. 2 and FIG. 6 , when the push rod 101 and the handle 103 are not in use, the plug hole 106 (see FIG. 11 ) disposed on the top surface of the support panel 100 needs to be plugged into the plug 118 . The bottom surface of the card-connecting plug 118 is also provided with a latching hole locating hole 119. After the plug-in plug 118 is inserted, the top surface of the latching plug 118 is flush with the top surface of the supporting panel 100 to ensure the integrity of the supporting panel 100 as a whole. .

As shown in FIG. 10, FIG. 11 and FIG. 12, the top surface of the supporting panel 100 is provided with two engaging holes 106, and the bottom of the engaging hole 106 is provided with a latching avoiding hole 107. At the bottom of the support panel 100, a position corresponding to the snap hole is provided with a base mounting space 108. The base mounting space 108 is fixedly mounted with a locking member C by screws or the like. The locking member C includes a base 109, a moving block 110, a latch 111, and the like. . The base 109 is installed in the base installation space 108. The base 109 is provided with a sliding slot and a cavity structure. Two moving blocks 110 are slidably mounted in the sliding slot. The bottom end of the moving block 110 is located in the sliding slot, and the top end protrudes from the sliding slot. The mouth is convenient for the adjustment of the moving block. The base 109 is slidably provided with two latches 111 at positions corresponding to the two escape holes 107. Two sleeves 112 sleeved on the outside of the plug 111 are fixed to the base 109 at the same time, and the bolt 111 can reciprocate axially along the sleeve 112. The two sleeves simultaneously guide and stabilize the pin 111 to avoid sway during the reciprocating movement of the pin. The two latches 111 are coaxially disposed, and the mutually distant ends thereof extend out of the base, and can be inserted through the avoidance hole 107 to the positioning hole corresponding to the push rod 101 or the handle 103 or the snap hole plug 118 to realize the push rod 101 or the handle. 103 or the fixed positioning of the card socket plug 118, the ends of the two pins 111 close to each other are fixed to the corresponding moving blocks. A moving block limiting rod 113 is fixed on one side of the two moving blocks 110, and a strip-shaped moving block limiting hole 114 is disposed at a position corresponding to the side wall of the base 109. The moving block limiting rod 113 is inserted into the moving block limiting hole 114. The reciprocating movement can be performed along the moving block limiting hole 114, and the moving block limiting hole 114 and the moving block limiting rod 113 cooperate to realize the limitation of the two extreme positions of the moving block.

The relative fixing between the push rod 101, the handle 103, the snap hole plug 118 and the support panel 100 can be realized by the snap hole 106 and the latch 111. The latch 111 constitutes the lock of the push rod 101, the handle 103 and the snap hole plug 118. Pieces. In actual use, under the driving of the moving block 110, the latch 111 has a first working position extending into the engaging hole to cooperate with the push rod positioning hole 105, the handle positioning hole 117 or the snap hole positioning hole 119, and After the contraction, the push rod 101 or the handle 103 or the second working position of the latching plug 118 is released; between the two moving blocks 110 and the base 109, a latch return spring 115 is mounted, which can be driven by the elastic force of the latch return spring 115. The two latches 111 quickly reach the first working position.

Referring to FIG. 8 , FIG. 9 and FIG. 11 , taking the push rod 101 as an example, when actually using the push rod 101, the push rod 101 needs to be taken out from the push rod storage space at the bottom of the support panel; Pressing the moving block 110 inwardly, the two moving blocks 110 are close to each other, and the two latches 111 move synchronously until they are disengaged from the engaging holes 106 (shown in FIG. 8); at this time, the bottom of the push rod 101 is inserted into the engaging hole. After being inserted into the position, the two push rod positioning holes of the push rod 101 are coaxially aligned with the two pins, and at this time, the two moving blocks 110 are released, and the two moving blocks are separated from each other by the pulling force of the latch return spring 115. At the same time, the escape hole passing through the snap hole is inserted into the push rod positioning hole 105 at the bottom of the push rod 101. The push rod 101 is relatively fixed relative to the support panel 100 by the dual positioning action of the latch 111 and the wall of the snap hole, and the push rod 101 can be used normally.

13 and FIG. 14 are schematic views showing the structure of the handle fixed in the engaging hole. The fixing principle is similar to that of the push rod. When the handle 103 is needed, the handle 103 needs to be taken out from the handle storage space at the bottom of the support panel; The moving block 110 is pressed inward, and the two moving blocks 110 are close to each other, and the two latches 111 are synchronously moved until they are disengaged from the engaging hole 106; at this time, the bottom of the handle 103 is inserted into the engaging hole, and after being inserted into the position, the two are released. The moving blocks 110 are separated from each other by the pulling force of the latch return spring 115, and the escape holes passing through the snap holes are inserted into the handle positioning holes 107 at the bottom of the handle 103. The handle 103 is relatively fixed relative to the support panel 100 by the double positioning of the latch 111 and the wall of the snap hole, and the handle 103 can be used normally.

FIG. 16 is a structural schematic view showing the snap hole plug 118 fixed in the snap hole. The fixing principle is similar to that of the push rod and the handle, except that the pin is inserted into the locking hole locating hole 119 to fix the locking hole plug.

As shown in FIGS. 17 and 18, when the push rod 101, the handle 103, and the snap hole plug 118 are not used, they can be accommodated in the corresponding housing space. The push rod 101 is positioned in the push rod housing space by the push rod positioning member 120. The handle 103 is positioned within the handle receiving space by the handle positioning member 103a. The snap-in plug 118 is snap-fitted into the snap-in plug holder 121.

As shown in FIG. 19, FIG. 20, FIG. 21 and FIG. 22, the push rod positioning member disposed at the bottom of the support panel 100 is similar in structure to the handle positioning member, and the positioning principle is the same, and the storage positioning of the push rod is taken as an example for further explanation: The rod positioning member includes: a mounting base 123 disposed on the bottom surface of the supporting panel 100 and having a square hole structure 122; a guiding post 126 is disposed at the bottom of the mounting base 123; a screw hole is disposed at a center of the top surface of the guiding post 126; the pressing plate 124 and the positioning rod 125 . The pressing plate 124 mainly comprises a plate body portion 130 and a main body portion. The plate body portion 130 is mainly used for pressing the push rod in the push rod receiving space, and the main body portion is mainly used for mounting and fixing the entire pressing plate. The main body portion of the pressure plate 124 is provided with a cavity communicating with the upper and lower sides. The bottom portion of the main body portion of the pressure plate 124 is provided with a sleeve portion 132 which is sleeved on the outer side of the guide post 126 and is slidably disposed. The central portion of the main body portion of the pressure plate 124 is provided with a retaining ring 128 and a retaining ring. The middle portion is provided with a relief hole for escaping the positioning rod 125; the top end of the positioning rod 125 is provided with a head portion 129 having a diameter larger than the aperture of the relief hole, and the head portion 129 is disposed to prevent the positioning rod 125 from coming off the pressure plate. The escape hole of the bottom of the positioning rod 125 passing through the retaining ring is fixed to the screw hole on the mounting base 123. The outer wall of the positioning rod 125 close to the head is sleeved with a return spring 127. The top end of the return spring 127 abuts against the bottom surface of the head 129, and the bottom end of the return spring 127 abuts against the top surface of the retaining ring 128. When the pressure plate is lifted, the pressing plate 124 is formed. The pulling force of the downward pressing causes the pressure plate 124 to move downward rapidly and return to the initial state. The top outer wall of the tubular portion 132 of the pressure plate 124 is provided with a square limiting platform 131 that cooperates with the square hole structure 122. The limiting platform 131 is disposed such that when the limiting platform 131 extends into the square hole structure 122, the pressure plate 124 can no longer be free. Rotation, only the axial movement under the action of external force. In this embodiment, the axial positioning of the pressure plate 124 is achieved by the return spring 127, and the positioning of the pressure plate 124 in the circumferential direction is achieved by the limiting table 131 and the square hole structure 122.

In actual use, when the push rod 101 needs to be stored, the push rod 101 is first fixed in the push rod storage space, then the pressure plate 124 is lifted, the square limit table 131 is separated from the square hole structure 122, and the pressure plate 124 is freely rotatable, and the pressure plate is pressed. 124 is rotated 90 degrees, pressed on the push rod, and then the pressure plate 124 is released. Under the action of the return spring 127, the pressure plate 124 is retracted, and when the push rod is pressed, the square limit table 131 is no longer free to protrude into the square hole. Rotate to position the push rod. When the push rod needs to be taken out, the process is similar. First, the pressing plate 124 needs to be pulled up, so that the pressing plate 124 is restored to the free state, and the pressing plate 124 is rotated 90 degrees until the push rod is no longer restrained by the pressing plate 124. At this time, the push rod can be taken out and the pressing plate can be taken out at the same time. Retract to the initial position. The structure of the handle positioning member is the same as that of the push rod positioning member, and the shape of the plate body portion is slightly different. Referring to FIG. 18 and FIG. 17, the positioning principle of the handle is the same as that of the push rod positioning member, and the description will not be repeated.

As shown in FIG. 6 and FIG. 7, the support panel 100 is a folded structure, which is composed of two sub-boards A and B which are hinged to each other, and the two sub-boards are mutually connected by an hinge shaft and a hinged seat; The panel is positioned in a folded state by a folding locator and an extension locator that positions the two daughterboards in a horizontally extended state. At the same time, a buckling member 135 is further disposed at the bottom of the support panel 100. The folding positioning member comprises a hook 133 (sub-board A) disposed on a side of the one of the sub-boards away from the hinged position, and a snap-in button 134 corresponding to the hook disposed on the other side of the sub-board away from the hinged position ( Subboard B) composition.

As shown in FIGS. 23-25, the snap button 134 is disposed on one side of one of the sub-boards, including a pressing end 136 protruding from the side of the support panel 100, a bayonet 137 disposed on one side of the snap button 134, and a setting a guide shaft 138 on the other side of the snap button 134, a button return spring 139 sleeved on the guide shaft 138, a guide hole 134 is provided on the other side of the latching button 134, and the support panel 100 is provided with a guide hole A guide rod 140 is provided in the guide hole. A space for mounting the engagement button 134 is provided on the support panel 100, and a button escape hole for avoiding the pressing end 136 is provided on the side of the support panel 100. The bottom of the support panel 100 is provided with a mounting plate 141. The mounting plate 141 is provided with a limiting hole for the free end of the guiding shaft 138 to pass through. One end of the button return spring 139 abuts against the inner wall of the mounting plate 141, and the other end is opposite to the engaging button 134. When the snap button 134 is pressed, the button return spring 139 is compressed to form an elastic force that causes the snap button 134 to return to its original position. The guide shaft 138 is used to ensure that the snap button reciprocates in the set direction. The guide rod 140 and the guide hole are used to define the extreme position at which the snap button operates. The setting of the limiting hole is used to ensure that the guiding shaft 138 is stably reciprocated in the axial direction to avoid offset and sway. When the two daughter boards are folded and folded into place, the hook portion of the hook 133 is engaged in the bayonet of the snap button 134. Under the action of the push of the button return spring 139, the snap button 134 fastens the hook 133. For the fixation of the two daughter boards, the support panel is finally housed as the structure of FIG. When the sub-board needs to be unfolded, the snap button 134 is pressed, the hook 133 is released, and the two sub-boards are free to open.

The mounting panel 100 is simultaneously provided with a mounting hole for mounting the elastic opening member; the elastic opening member 135 includes an elastic body 142 slidably disposed in the mounting hole, and a spring opening spring disposed between the bottom of the elastic body 142 and the bottom of the mounting hole 143 and a limit lever 144 disposed laterally in the mounting hole. A limiting hole 145 is defined in the elastic body 142 , and the limiting lever 144 is disposed in the limiting hole 145 . The limit lever 144 and the limiting hole 145 cooperate to define the limit of the movement of the elastic body 142. The elastic body 142 is generally a columnar structure. In the initial state, the elastic body 142 protrudes from the bottom plane of the support panel 100 under the elastic force of the elastic member return spring 143.

As shown in FIG. 2 and FIG. 4, the hinge sides of the two sub-boards are further provided with corresponding and cooperating bumps 166 and a card slot 167 structure, and the bumps 166 and the card slots 167 are arranged in groups, each set of bumps 166 and cards. In the slot 167, the bump 166 and the card slot 167 are respectively disposed on different daughter boards. The plurality of sets of bumps 166 and the card slots 167 can be symmetrically disposed (ie, symmetrically disposed in the hinge plane of the hinge axis). The protrusion 166 and the card slot 167 cooperate with each other. After the support panel is extended into position, the protrusion 166 of one sub-board is inserted into the corresponding card slot of the other sub-board to prevent the sub-board from extending and ensuring that the entire support panel is a horizontal plate surface. Settings. At the same time, after the two daughter boards are folded into position (forming a "luggage"), the plurality of bumps 166 can be used as the support legs of the "luggage" to prevent the folded cart from being dumped and convenient for storage. At the same time, the side on which the two sub-boards are hinged is provided with a positioning member 168 which holds the two sub-boards in a horizontally extended state.

Referring to FIG. 5, a receiving hole 169 and a hinge hole 170 are disposed on a sub-board A near the hinge side, and a positioning hole 171 is disposed on the other sub-board B near the hinge side. The receiving hole 169 and the hinge hole 170 are provided. The positioning holes 171 are disposed along the same level and are located on the same horizontal plane. When the daughter board is in the unfolded state, the receiving hole 169 and the positioning hole 171 are located on both sides of the hinge hole 170 and are symmetrically disposed. The positioning hole 169, the hinge hole 170, and the positioning hole 171 are hinged in the hinge hole 170 of the sub-board A to form the positioning member 168. The bottom of the hinge side of the positioning hook 172 is provided with a retaining member (generally It can be a anti-lifting ring, a anti-lifting bump or a anti-off nut, etc., at this time, a support preventing step is provided in the support panel to prevent the positioning hook from coming off the sub-board A, and at the same time, the positioning hook axial direction is provided on the outer circumference of the side. The return spring, the positioning hook axial return spring gives a tension to the positioning hook, causing it to move toward the sub-plate. In the initial state, the hook portion of the positioning hook 172 is received in the receiving hole 169 by the pulling force of the positioning hook axial return spring. When the daughter board A and the daughter board B are horizontally deployed in position, the daughter board A and the daughter board B form a horizontal supporting panel. At this time, the positioning hook 172 is pulled out, and the positioning hook is disengaged from the receiving hole 169, and can be freely rotated. At this time, the positioning hook is rotated by 180 degrees, so that the hook portion of the positioning hook 172 is aligned with the positioning hole 171 of the sub-board B, and the positioning hook is released. 172. The hook portion of the positioning hook 172 enters the positioning hole 171 under the action of the positioning hook axial return spring to realize positioning of the sub-board A and the sub-board B. Under the joint action of the bump 166 and the card slot 167, and the positioning hook 172, the daughter board A and the daughter board B are stably in an unfolded state and do not deform themselves.

Referring to Fig. 26, in actual use, the two sub-boards are folded such that the bottom surfaces of the two sub-boards are brought close to each other until they are fitted, and the ejecting member 135 is forced to contract until the card 133 of one of the sub-boards and the card of the other sub-board The button 134 is aligned and engaged, and the hook 133 is engaged in the bayonet 137 of the snap button 134. When it is necessary to open, the snap button 134 is pressed, and the hook 133 is released. Under the action of the pop-up member 135, the upper sub-board is bounced and the two sub-boards are opened. When the two sub-boards are in position, the bumps 166 and the card slots 167 are fastened to each other, and the sub-board is not further turned over. At this time, the positioning hook 172 is opened, so that the hook portion of the positioning hook 172 enters the positioning hole 171. Finally, the positioning of the two daughter boards is achieved.

As shown in FIGS. 36-40, the support panel 100 is a splicable structure, that is, a plurality of support panels can be spliced to each other to form a support panel of a desired size. The adjacent two supporting panels are fixed to each other by a splicing fixing member similar to the positioning member 168, except that the receiving hole 169 and the positioning hole 171 are no longer in a straight line, but are arranged at 90 degrees along the hinge hole, that is, need to be used. When positioning the positioning member 168, the positioning hook 172 needs to be lifted, then rotated 90 degrees, aligned with the positioning hole on the adjacent supporting panel, and the positioning hook can be released. Specifically, each support panel is provided with a plurality of sets of splicing fixing members (receiving holes and hinge holes with positioning hooks), the positions of the splicing fixing members between the plurality of supporting panels are corresponding, and, for the compactness and rationality of the structure After the positioning hook is disengaged from the receiving hole, the receiving hole is simultaneously used as a positioning hole of the adjacent supporting panel, that is, the two sets of the splicing fixing members on the two adjacent supporting panels are aligned with each other, but the position of the hinge hole and the receiving hole therein a staggered arrangement, wherein the hinge holes of one set of the splicing fixtures are aligned with the accommodating holes in the other set of splicing fixtures, and the accommodating holes in one splicing fixture are spliced and fixed by another set The hinge holes in the piece are aligned to ensure that the positioning hooks in one of the splicing fixtures are aligned with the accommodating holes in the other set of splicing fixtures after being rotated by ninety degrees, and the accommodating holes are used as positioning holes. Fig. 36 and Fig. 37 are diagrams showing the assembling effect in the state in which the pusher is housed. Fig. 38 is a view showing the assembly effect after the pusher 101 is mounted on one of the support panels, that is, as a structural view of the multifunctional turtle car. Fig. 39 and Fig. 40 are diagrams showing the assembly effect after the installation of the two push rods, that is, the structure diagram of the multifunctional turtle car as another structure.

In the present solution, the receiving hole 169, the hinge hole 170, the positioning hole 171, and the like are all disposed in a rectangular groove structure to prevent the positioning hook 172 from interfering with the adjacent supporting panel, or to prevent the positioning hook 172 from protruding from the supporting panel. The surface of the board affects the flatness of the support panel.

As shown in FIGS. 27-29, the support panel 100 is provided with a caster housing space in which the casters 102 are housed. A hinge seat 146 is mounted in the caster storage space, and the hinge seat 146 is a U-shaped plate structure, and the caster is mounted on the support panel 100 through the hinge seat 146. The caster 102 is transferred to the caster base 147. The top of the caster seat is coupled to the caster for mounting the caster. The lower part of the caster seat is provided with a hinge hole for locking with the hinge seat and a locking hole 148. There are three locking holes 148, and the three locking hole lines form two 90 degree right angles, and the three locking holes are equidistant from the center of the hinge hole. There are always two locking hole positions aligned with the two locking bars 152 described below when the caster seat is in the first working position or in the second working position. The hinge seat is provided with a relief hole that avoids the lock bar. The caster seat is hingedly mounted to the hinged seat via the hinge shaft 149, and the hinge shaft 149 is sleeved with a vertical return torsion spring 150. The hole-shaped structure for fixing and installing the reset torsion spring 150 is provided on the hinge seat to facilitate positioning of the reset torsion spring 150.

The caster 102 has a first working position extending from the support panel and disposed perpendicular to the support panel, and a second working position folded and received in the caster accommodation space; the support panel is simultaneously mounted with the caster The first working position or the caster lock that is held in the second working position. The caster locking member is a sliding seat 151 disposed on the supporting panel, and the sliding seat is provided with two locking bars 152 on one side of the hinged seat, and the hinged seat is provided with a relief hole 153 for avoiding the locking bar. Therefore, the escape hole 153 needs to be positioned opposite the lock lever. The caster 102 needs to be rotated 90 degrees from the first working position to the second working position; in the second working position, the two locking holes are located at the same position as the two locking holes in the first working position The positions coincide and are perfectly aligned with the two lever positions. When the caster is in the first working position or the second working position, the two locking bars can be inserted into the corresponding locking holes for positioning.

A sliding seat limiting rod 151a is fixed on the supporting panel 100, and the sliding seat is provided with a sliding seat limiting hole through which the sliding seat limiting rod passes. The sliding seat limiting hole is a horizontally disposed waist hole or a strip hole, and the sliding seat limiting rod realizes the positioning and positioning of the sliding seat, and also plays a limiting role, thereby realizing the two motion limits of the sliding seat. limited. A thrust spring 154 is provided between the carriage 151 and the support panel 100 for causing the carriage 151 to move toward the hinge seat.

In the drawing, in the first working position, two of the three locking holes 148 are located on a horizontal line passing through the center of the hinge hole, and are symmetrically disposed, and the two locking holes are respectively named as the first locking hole, Two locking holes, another locking hole 148 located directly below the hinge hole (on the vertical line of the first locking hole and the second locking hole line), named as the third locking hole, the first locking hole, the second locking hole The distance from the hinge hole is equal to the distance of the lower third locking hole, and the connection between the three locking holes is 45 degrees and 135 degrees with the horizontal plane, respectively. The line between the two escape holes 153 on the hinged seat is 135 degrees from the horizontal plane. The positions of the two lock levers 152 respectively correspond to the two escape holes 153, and the positions corresponding to the axial directions are unchanged, that is, the two lock levers are coaxially disposed with the two escape holes, and are axially aligned with each other. The three locking holes 148 rotate with the rotation of the caster. In the second working position, the second locking hole is switched to the position of the third locking hole of the first working position, and at the second working position, the third The locking hole is shifted to the position of the first locking hole of the first working position. That is, when the caster is in the first working position, the two lock levers 152 correspond to the positions of the first lock hole and the third lock hole, and when the slide 151 is released, the slide 151 will be under the thrust of the thrust spring 154, so that two The locking bar 152 is inserted into the first locking hole and the third locking hole to achieve positioning of the caster in the first working position. When it is required to rotate the caster to the second working position, the external force is required to move the carriage 151 away from the corresponding caster until the two lock levers 152 release the caster seat 147, and the caster seat 147 can be freely rotated, and the caster seat 147 can be freely rotated. The rotation is horizontal (ie, 90 degrees), and is stored in the caster storage space on the support panel. After being stored in position, the slide 151 is released, and the two lock levers 152 are inserted into the second lock hole and the third lock hole. Realize the positioning of the caster in the second working position. When the caster needs to be unscrewed, the slide 151 needs to be moved away from the corresponding caster to release the caster seat 147. At this time, under the thrust of the thrust spring 154, the caster will quickly change from the horizontal storage state to the vertical one. A working position state.

As shown in Figure 30-35, as a structural diagram of a multifunctional table or stool, two support legs 155 are hinged at the bottom of the support panel in the structure; the support legs are telescopic structures, including: two hinged on the support panel a fixed tube 156; a telescopic tube 157 embedded with the fixed tube; in FIGS. 30 and 31, the bottom end of the telescopic tube 157 is inserted into the fixed tube 156, and the telescopic tube and the fixed tube are slidably disposed; A support leg locking member positioned between the fixed tube and the telescopic tube. In the figure, the tops of the two telescopic tubes 157 (i.e., the bottoms of the support legs) are fixed to each other by a reinforcing rod 163. A retaining member may be disposed between the telescopic tube and the fixed tube to prevent the telescopic tube from being detached from the fixed tube.

The support foot locking member includes: a cross bar 158 fixed to the two fixed tubes; and two moving latches 159 and two moving buttons 160 disposed in the cross bar. The crossbar is fixed on the fixed pipe through the T-shaped pipe member 158a. The T-shaped pipe member is horizontally disposed at one end, and the end is provided with a through hole for the moving pin 159 to pass through, and the cross bar is fixed to the outer wall of the end; the other ends of the T-shaped pipe member are It is vertically disposed and fixed to the fixed pipe, and is sleeved on the outer wall of the telescopic pipe, which acts as a limit guiding for the telescopic pipe to avoid swaying when the telescopic pipe moves telescopically. The crossbar 158 is composed of two outer casings fixed by screws or bolts, and has a cavity structure in the middle. The outer casing of the crossbar 158 is provided with an adjusting hole for exposing the pressing portion of the moving button. The two moving pins are coaxially disposed, and the two moving latches can be inserted into the end of the T-shaped tubular member 158a and inserted into the telescopic tube therein for the mutual positioning of the fixed tube and the telescopic tube. The ends of the two moving pins that are close to each other are respectively fixed with the corresponding moving buttons. At least a part of the two moving buttons 160 protrudes from the adjusting hole on the crossbar 158, and an external force can be applied to the moving button through the protruding portion, and the position of the moving latch can be adjusted by pressing the moving button, and the adjusting hole can be adjusted. Limit the movement limit position of the moving button. The two moving pins have a first working position for inserting the telescopic tube away from each other, and a second working position for disengaging the telescopic tube; and a return spring 161 for causing the two moving pins to move away from each other, the return spring 161 is provided at one end and disposed on the moving latch The opposite end of the block abuts against the stop disposed in the cross bar for prompting the moving pin to quickly reach the first working position; the telescopic tube is provided with one or more telescopic positioning holes for inserting and positioning the moving pin 162. The fixing tube 156 is adjacent to the portion of the supporting panel, and is respectively provided with a tension spring 164 and a reinforcing support rod 165 between the supporting panel. After the supporting foot is deployed, the supporting leg can be automatically opened by the tension spring 164, and under the action of the tension spring After the support foot is deployed, the reinforcing support rod 165 can be quickly opened in place and does not retract itself. The tension spring 164 serves to maintain the support foot in the extended state. At the same time, after the support legs are received in the corresponding storage space of the support panel, the support pins can be fixed by a structure such as a positioning pin and a card plate provided on the support panel.

32a-35, when it is required to be used as a table or a stool, the handle or the handle can be stored in the corresponding storage space of the support panel. The two support feet are then deployed until the two reinforcing support rods 165 are extended into position. This can be used as a table or stool (see Figure 32b, the initial length of the support foot). When it is necessary to adjust the height of the supporting leg, the moving button can be first pressed inward (as shown in FIG. 33 and FIG. 34), so that the moving pin releases the telescopic tube, and the telescopic tube is in a freely stretchable state, and the telescopic tube is stretched to an appropriate height. Then, the moving button is released, so that the moving pin is inserted into the corresponding telescopic positioning hole 162, so that the fixing of the telescopic tube relative to the fixed tube is completed, that is, the adjustment of the supporting leg is completed (see FIGS. 32a and 32c, and FIG. 32a is a schematic view after adjusting the height of the portion, Figure 32c is a schematic view of the adjustment to the highest height, see also Figure 35).

In the present invention, the support panel may be an integral blow molded or injection molded structure, and various storage spaces or structures required thereon may be formed by a blow molding or injection molding process.

In the present invention, two or all of the four casters can select the universal wheel. And the number of casters can also be adjusted according to actual needs, for example, three or more can be set.

The multifunctional cart of the present invention can be used as the following products:

First, it can be used as a cart, as shown in Figure 1, and can be used as a turtle car by assembling multiple carts to form a larger capacity cart, as shown in Figure 38-40. Alternatively, the pusher can be replaced with a handle and converted to a pull cart, as shown in Figure 42.

Second, after all the components are stored, they can be used as a fixed support panel for the storage of articles, moisture-proof and more sanitary, as shown in Figure 2. At the same time, the casters can also be deployed as a movable support panel. As shown in Fig. 41; a plurality of fixed or moving support panels can be spliced to form a larger capacity support panel, as shown in Figs. 36 and 37.

Third, after the handle and the push rod are stored, the support feet can be unfolded and used as a table or a stool to facilitate the rest of the user, or can also be used for storing items, as shown in Figures 32a-32c.

Fourth, when not in use, in order to facilitate the carrying and transportation of the trolley, the support panel can be folded to form a smaller structure, and damage to the storage component during transportation or carrying can be avoided. In addition, the handle can be fixed in the engaging hole of the support panel, which is further convenient to carry.

In addition to the above structure, there are the following modified structures:

As shown in FIG. 43, the difference from FIG. 2 is that the supported support legs 104 and the handle 103 are not overlapped, which can further reduce the overall thickness of the support panel 100.

As shown in Fig. 44, the difference from Fig. 43 is that the support legs are no longer provided, and the structure can be extended to any of the above structures. After the support legs are no longer provided, the components and structures related to the support legs on the support panel can be omitted, which further simplifies the structure of the support panel, and the rest of the structures can refer to the above.

The above embodiments are only specific embodiments of the present invention. As three independent products, some components may be omitted as needed to form other specific embodiments, such as:

When used as a multi-function cart, the supporting structure such as the support leg can be omitted (as shown in FIG. 44); of course, the related structure such as the handle and the snap-in plug can be omitted; or the splicing fixing member can be omitted;

When used as a multifunctional turtle car, the supporting structure such as the support leg can be omitted (as shown in FIG. 44); of course, the related structure such as the handle and the snap hole plug can be omitted;

When used as a multi-function table or stool, the related structure such as the tie rod may be omitted, or the related structure such as the handle may be omitted; or the related structure such as the caster may be omitted;

However, the above changes or optimizations and the like are all within the scope of the present invention.

Claims

A multifunctional cart comprising a support panel, a push rod and a caster disposed at a bottom of the support panel, wherein the push rod is a detachable structure; and the support panel is provided with a push for receiving the push rod a rod accommodating space, and a push rod positioning member for positioning the push rod in the push rod accommodating space; the support panel is simultaneously provided with a snap hole and a locking member for fixing the push rod in the snap hole.
The multifunctional cart according to claim 1, wherein the support panel is provided with a caster storage space for accommodating the casters;

The caster is mounted on the support panel by a hinged seat, the caster has a first working position disposed perpendicularly to the support panel after being unfolded, and a second working position folded and received in the caster accommodation space;

A caster lock that holds the caster in the first working position or in the second working position is simultaneously mounted on the support panel.
The utility cart according to claim 2, further comprising a caster seat for mounting the caster, the caster seat being provided with a hinge hole for locking with the hinge seat and a locking hole;

The caster locking member is a sliding seat disposed on the supporting panel, the sliding seat is provided with at least one locking bar on a side facing the locking hole, and the sliding seat can reciprocate axially along the locking bar;

The locking holes are at least two, and at least one of the locking holes coincides with a locking hole position when the caster is in the second working position when the caster is in the first working position, and is opposite to the locking bar ;

When the caster is in the first working position or the second working position, the locking bar is inserted into the correct locking hole to realize positioning of the caster.
The utility cart according to claim 3, wherein said lock levers are at least two; said locking holes are at least three, and at least two locks are provided when said casters are in a first working position The holes coincide with the two locking hole positions when the caster is in the second working position, and are opposite to the lock bar.
The utility model as claimed in claim 3, wherein the support panel is fixed with a sliding seat limiting rod, and the sliding seat is provided with a sliding seat limiting hole through which the sliding seat limiting rod passes. .
The utility model as claimed in claim 3, wherein the support panel is fixed with a sliding seat limiting rod, and the sliding seat and the supporting panel are arranged to urge the sliding seat to move toward the hinged seat. Thrust elastic member.
The utility cart of claim 1 wherein said locking member comprises:

a base fixed to the support panel;

Slide the two moving blocks set in the base;

Sliding two coaxially disposed latches disposed on the base, one end of the two latches facing away from the base can be inserted into the latching hole, and the other end is fixed to the corresponding moving block;

The bottom of the push rod is provided with a push rod positioning hole that can cooperate with the protruding end of the plug;

Driven by the moving block, the latch has a first working position into which the engaging hole can cooperate with the push rod positioning hole, and a second working position for releasing the push rod after contracting.
The multifunctional cart according to claim 7, further comprising a handle, the handle being a detachable structure; the support panel being provided with a handle storage space for accommodating the handle, and positioning the handle on the handle a handle positioning member in the receiving space; the locking member can position the handle in the engaging hole.
The multifunctional cart according to claim 8, wherein the bottom of the handle is provided with a handle positioning hole that can cooperate with the protruding end of the latch; and the latch has a card inserted by the moving block. The through hole can cooperate with the handle positioning hole to realize the first working position of the positioning, and the second working position of the handle is released after the contraction.
The utility model as claimed in claim 7 , wherein the moving block is provided with a moving block limiting rod, and the base is provided with a moving block limiting hole for the moving block limiting rod to pass through.
The utility cart according to claim 7, wherein the moving block is provided with a moving block limiting rod, and between the moving block and the base or between the two moving blocks, a moving block and a moving block are provided. The latch quickly reaches the latch return spring of the first working position.
The utility cart according to claim 1, wherein two support legs are hinged at the bottom of the support panel; the support legs include:

Two fixed tubes hinged on the support panel;

a telescopic tube that is slidably disposed with a fixed tube;

A support leg locking member for positioning the fixed tube and the telescopic tube;

The support panel is provided with a support leg storage space for accommodating the support legs.
The utility cart of claim 12, wherein the support foot lock comprises:

a crossbar fixed to the two fixed tubes;

Sliding two moving latches and two moving buttons disposed in the crossbar, the opposite ends of the two moving latches are respectively fixed with the corresponding moving buttons, and the opposite ends can pass out the fixing tube;

The two moving pins have a first working position in which the telescopic tube is inserted away from each other to realize mutual fixation of the telescopic tube and the fixed tube, and a second working position of the telescopic tube.
The multi-function cart of claim 13 wherein said crossbar is further provided with a return spring that urges the two moving latches away from each other.
The multifunctional cart according to claim 1, wherein the support panel is composed of two sub-boards hinged to each other; the support panel is simultaneously provided with a folding positioning member for positioning the two sub-boards in a folded state. And an extension locator that positions the two daughterboards in a horizontally extended state.
The utility cart of claim 1 wherein said push rod is a telescopic structure.
A multifunctional turtle car comprising a support panel and a caster disposed at a bottom of the support surface, wherein the support panel is provided with a splicing fixing member, and the plurality of support panels are freely spliced; the bottom of the support panel is provided a caster storage space; the caster is mounted on the support panel by a hinged seat, the caster has a first working position disposed perpendicularly to the support panel after being unfolded, and a second working position folded and received in the caster accommodation space.
The multifunctional turtle car according to claim 1, wherein the support panel is composed of two sub-boards hinged to each other; the support panel is simultaneously provided with a folding positioning member for positioning the two sub-boards in a folded state. And an extension locator that positions the two daughterboards in a horizontally extended state.
The multifunctional turtle car according to claim 18, wherein said extension positioning member comprises a projection and a card slot structure respectively disposed on the hinge sides of the two sub-plates and cooperating with each other.
The multifunctional turtle car according to claim 18 or 19, wherein the extension positioning member comprises:

a hinge hole and a receiving hole disposed on a side of one of the sub-boards perpendicular to the hinge side;

a positioning hook disposed in the hinge hole for axial movement and circumferential rotation;

a positioning hole disposed on a side of the other sub-board perpendicular to the hinge side;

The positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and a mounting working position in which the hook portion is inserted into the positioning hole on the adjacent sub-board to realize positioning of the two sub-boards.
The multifunctional turtle car according to claim 20, wherein the hinge hole is provided with an axial retaining member and a positioning hook axial return spring that can prompt the positioning hook to quickly enter the receiving hole or the positioning hole. The multifunctional turtle car according to claim 17, wherein the support panel is provided with a pair of hinge holes and receiving holes, and is disposed in the hinge hole for axial movement and circumferential rotation. The positioning hook is further provided with a positioning hole; when the splicing is required, the positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and the rotating hook portion is inserted into the adjacent supporting panel The upper positioning hole realizes the mounting work position for positioning of the two support panels.
The multifunctional turtle car according to claim 22, wherein the hinge hole is provided with a positioning hook axial return spring and an axial retaining member for prompting the positioning hook to quickly enter the receiving hole or the positioning hole.
The multifunctional turtle car according to claim 17, further comprising a handle, the handle being a detachable structure; the support panel being provided with a handle storage space for accommodating the handle, and positioning the handle on the handle a handle positioning member in the storage space; the support panel is provided with a snap hole at the same time, and a locking member capable of fixing the handle in the snap hole.
The multifunctional turtle car according to claim 17, further comprising a push rod, wherein the push rod is a detachable structure; the support panel is provided with a push rod storage space for accommodating the push rod, and The push rod positioning member is positioned in the push rod storage space; the support panel is simultaneously provided with a snap hole and a locking member for fixing the push rod in the snap hole. .
A multifunctional turtle car according to claim 25, wherein said locking member comprises:

a base fixed to the support panel;

Slide the two moving blocks set in the base;

Sliding two coaxially disposed latches disposed on the base, one end of the two latches facing away from the base can be inserted into the latching hole, and the other end is fixed to the corresponding moving block;

The bottom of the handle is provided with a handle positioning hole that can cooperate with the protruding end of the pin;

Driven by the moving block, the latch has a first working position extending into the engaging hole to cooperate with the handle positioning hole, and a second working position for releasing the handle after contracting.
The multifunctional turtle car according to claim 17, wherein the support panel is simultaneously mounted with a caster locking member for holding the caster in the first working position or in the second working position;

Also included is a caster seat for mounting the caster, the caster seat is provided with a hinge hole for locking with the hinge seat and a locking hole;

The caster locking member is a sliding seat disposed on the supporting panel, the sliding seat is provided with at least one locking bar on a side facing the locking hole, and the sliding seat can reciprocate axially along the locking bar;

The locking holes are at least two, and at least one of the locking holes coincides with a locking hole position when the caster is in the second working position when the caster is in the first working position, and is opposite to the locking bar ;

When the caster is in the first working position or the second working position, the locking bar is inserted into the correct locking hole to realize positioning of the caster.
A multi-functional table includes a support panel, wherein two support legs are hinged at the bottom of the support panel; the support legs include:

Two fixed tubes hinged on the support panel;

a telescopic tube that is slidably disposed with a fixed tube;

A support leg locking member for positioning the fixed tube and the telescopic tube;

The support panel is provided with a support leg storage space for accommodating the support legs.
The multi-function table according to claim 28, wherein said support foot lock comprises:

a crossbar fixed to the two fixed tubes;

Sliding two moving latches and two moving buttons disposed in the crossbar, the opposite ends of the two moving latches are respectively fixed with the corresponding moving buttons, and the opposite ends can pass out the fixing tube;

The two moving pins have a first working position in which the telescopic tube is inserted away from each other to realize mutual fixation of the telescopic tube and the fixed tube, and a second working position of the telescopic tube.
The multifunctional table according to claim 29, wherein the bottom end of the fixing tube is fixed with a T-shaped pipe member, the horizontal portion of the T-shaped pipe member is fixed in the fixed pipe, and the outer wall of the telescopic pipe is sleeved at the same time to form a guiding cylinder. The end of the vertical section of the T-shaped pipe member is fixed to the end of the fixed pipe pipe and fixed to one end of the corresponding cross bar, and the end is provided with a guiding hole through which the moving pin passes.
The multi-function table according to claim 28, wherein the telescopic tube is provided with a plurality of sets of telescopic positioning holes for inserting the moving pins.
The multi-function table according to claim 28, further comprising a handle, the handle being a detachable structure; the support panel being provided with a handle storage space for accommodating the handle, and positioning the handle at the handle storage a handle positioning member in the space; the support panel is simultaneously provided with a snap hole, and a locking member capable of fixing the handle in the snap hole; the locking member can position the handle in the snap hole .
The multi-function table according to claim 32, wherein said locking member comprises:

a base fixed to the support panel;

Slide the two moving blocks set in the base;

Sliding two coaxially disposed latches disposed on the base, one end of the two latches facing away from the base can be inserted into the latching hole, and the other end is fixed to the corresponding moving block;

The bottom of the handle is provided with a handle positioning hole that can cooperate with the protruding end of the pin;

Driven by the moving block, the latch has a first working position extending into the engaging hole to cooperate with the handle positioning hole, and a second working position for releasing the handle after contracting.
The multi-function table according to any one of claims 28 to 33, wherein the support panel is composed of two sub-boards hinged to each other; the support panel is simultaneously provided with two sub-boards positioned in a folded state. The folding locating member and the positioning locator for positioning the two sub-boards in a horizontally extended state.
The multi-function table according to claim 34, wherein said extension positioning member comprises a projection and a card slot structure respectively disposed on the hinge sides of the two sub-boards and cooperating with each other.
The multi-function table according to claim 34, wherein the extension positioning member comprises:

a hinge hole and a receiving hole disposed on a side of one of the sub-boards perpendicular to the hinge side;

a positioning hook disposed in the hinge hole for axial movement and circumferential rotation;

a positioning hole disposed on a side of the other sub-board perpendicular to the hinge side;

The positioning hook has a receiving working position in which the hook portion is received in the receiving hole, and a mounting working position in which the hook portion is inserted into the positioning hole on the adjacent sub-board to realize positioning of the two sub-boards.
The multi-function table according to claim 36, wherein the hinge hole is provided with a positioning hook axial return spring and an axial retaining member.
A caster structure, including a caster, characterized in that it comprises:

Hinged seat

a caster seat for mounting the caster, the caster seat is provided with a hinge hole for locking with the hinge seat and a locking hole;

The caster has a first working position arranged vertically after being unfolded, and a second working position arranged horizontally;

Also included is a caster lock that holds the caster in the first working position or in the second working position.
The caster structure according to claim 38, wherein the caster locking member is a sliding seat, the sliding seat is provided with at least one locking bar on a side facing the locking hole, and the sliding seat can be along the locking bar Axial reciprocating movement;

The locking holes are at least two, and at least one of the locking holes is opposite to the locking bar when the casters are in the first working position or the second working position;

When the caster is in the first working position or the second working position, the locking bar can be inserted into the correct locking hole to realize positioning of the caster.
A caster structure according to claim 39, wherein said lock bars are at least two; said locking holes are at least three, and each of said casters is in a first working position or a second working position There are two keyholes that face the lock bar.
A caster structure according to claim 39, characterized in that it is mounted on a component on which a slide limit lever is fixed, and the slide is provided with a slide limit rod through Sliding seat limit hole.
The multi-function cart according to claim 41, wherein a thrust elastic member for moving the carriage toward the hinge seat is provided between the carriage and the member.