CN111894442A

CN111894442A - Multifunctional folding ladder

Info

Publication number: CN111894442A
Application number: CN202010812914.3A
Authority: CN
Inventors: 余金才; 赖清
Original assignee: Foshan Caiquan Electronic Technology Co ltd
Current assignee: Foshan Caiquan Electronic Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2020-11-06

Abstract

The invention discloses a multifunctional folding ladder, which comprises a folding ladder, a hole sleeve, a table top, a truckle mounting piece, a truckle and a bearing plate, wherein at least four sections of ladder frames are hinged and connected through hinge joints in sequence and can stand in a folded state; the truckle installed part is the sheet metal component and has truckle installation wall, be equipped with the truckle mounting hole on the truckle installation wall, truckle fastening installation is in the truckle mounting hole, truckle installation wall side wall edge extends and bends and is formed with the side bearer frame cooperation of hanging with the ladder frame and adorns the groove of being connected, the groove of hanging of truckle installed part is detained on the side bearer frame of folding ladder and is fastened with the screw for the truckle, the truckle installed part back-off can be with the folding ladder group build into the shallow that carries cargo with the screw fastening for the bearing plate of spreading on the ladder frame on the side bearer frame, the group is built simple and conveniently, swiftly.

Description

Multifunctional folding ladder

Technical Field

The invention belongs to the technical field of folding ladders, and particularly relates to a multifunctional folding ladder which can be built into a cart and a table on the basis of the folding ladder.

Background

A folding ladder in the existing market is like the four-section ladder frame folding ladder disclosed by the Chinese utility model patent (publication number CN 2869275Y), and the ladder frames in each section are hinged and connected through a hinged connecting piece disclosed by the Chinese utility model patent (publication number CN 201087692Y). The four-section ladder frame folding ladder can be used as a straight ladder, a herringbone ladder and a working platform ladder through folding adjustment, and is particularly suitable for some exhibition activities. In the event of exhibition activities, the function of the folding ladder is limited to be used as a ladder, and the four-section ladder frame folding ladder is folded and folded when not in use and is basically in an idle state. While negotiation tables are often needed in the exhibition activities, in the actual work, some exhibition units have the problems that the negotiation tables are not prepared due to cost consideration or careless work, or the exhibition host does not have enough negotiation tables for standby; in addition, the cart is often used to carry goods or other objects during the exhibition event, and in the case of the exhibition unit carrying such a folding ladder, it would be greatly convenient to the exhibition unit if the folding ladder could be made to have the functions of the cart and the built table.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a multifunctional folding ladder which can be built into a cart and a table on the basis of the folding ladder and is simple, convenient and quick to build.

In order to achieve the purpose, the invention adopts the following technical scheme:

a multifunctional folding ladder comprises a folding ladder, a hole sleeve, a table top, a trundle mounting piece, trundles and a bearing plate, wherein at least four sections of ladder frames are hinged and connected through hinge joints in sequence and can stand in a folded state; the caster mounting part is a sheet metal part and is provided with a caster mounting wall, the caster mounting wall is provided with caster mounting holes, the caster is tightly mounted in the caster mounting holes, one side wall edge of the caster mounting wall extends and bends to form a hanging groove matched with and connected with a side frame of the ladder frame in a hanging manner, and the caster mounting part is hung on the side frame of the ladder frame through the hanging groove in a folding state; the ladder frame is adjusted into a straight line or L shape through the hinge joint, and the bearing plate is installed in the truckle installed part through the fastening and is realized the installation and be fixed in the ladder frame.

Further, the bottom surface of the table top is provided with a table top fixing hole corresponding to the mounting hole, a bolt penetrates through the hole sleeve from the lower part of the hole sleeve to be connected with the mounting hole and the table top fixing hole to directly fasten the table top on the hole sleeve, or the table top is mounted and fixed on the hole sleeve through an intermediate piece, the intermediate piece can be in a long condition, the bottom surface of the table top is provided with a table top fixing hole, hole bodies are distributed on the long condition, the table top fixing hole corresponds to the hole bodies, the bolt penetrates through the hole sleeve to be connected with the mounting hole, the hole bodies and the table top fixing hole to fixedly mount the table top and the long strip piece on the hole sleeve, the table top and the long strip piece are connected with other corresponding table top fixing holes and the hole bodies through bolts to be fastened and connected, and therefore the table; the middle piece can also be a sucker which is arranged in the mounting hole of the hole sleeve, and the table top is fixed on the sucker in an adsorption way, so that the table top is particularly suitable for the table tops with smooth contact surfaces, such as glass, resin, ceramic and the like.

Preferably, the caster wheel mounting walls are symmetrically arranged on two sides of the hanging groove, and the hanging groove is formed by a first sheet metal wall which is bent and extends to be arranged on one side wall edge of the caster wheel mounting wall and a second sheet metal wall which is connected between the first sheet metal walls.

Further, still include the support frame, the support frame is installed on the pedal roof beam of the outside ladder frame when the folding ladder stands under fold condition and is supported in ground, can ensure that the folding ladder stands more firmly, is difficult for empting under fold condition.

Preferably, the hinge joint comprises a first arm left cover, a first arm right cover, a second arm left cover, a second arm right cover, a jacking part, a central shaft, a rivet, a positioning key, a handle, a tension spring, a long shaft, a key seat sheet, a small shaft, a spring and a support, the first arm left cover, the second arm left cover, the jacking part, the second arm right cover and the first arm right cover are sequentially arranged and movably connected through the central shaft in a rotating way, the first arm left cover and the first arm right cover are connected through the rivet, the first arm left cover and the first arm right cover are correspondingly provided with sliding holes, the second arm left cover and the second arm right cover are correspondingly provided with positioning notches, the upper end of the jacking part is connected with the second arm left cover and the second arm right cover through the jacking spring, the lower end of the jacking part is placed on the positioning key, the positioning key is connected with the positioning notches and the sliding holes, the first arm left cover, the first arm right cover, the handle and the tension spring are movably connected through the long shaft in a rotating way, the key seat sheet and the spring are installed on the small shaft in a penetrating way, the small shaft is connected with the positioning key, the spring and the support in a jacking mode, the support is fixedly connected with the inner side of the handle through the fastening piece, and the hole sleeve is arranged on the outer wall of the first arm left cover or the first arm right cover.

Furthermore, the handle is provided with a thread connecting hole or an opening, a nut is welded on the hole to be in threaded connection with the mounting screw rod, when the screw rod is screwed, the tail end of the handle can be jacked up to enable the positioning key to retract and leave the positioning notch, so that the hinge joint is in an unlocking state, the joint arm cover can freely rotate for 180 degrees around the central shaft, and when the folding ladder is folded to form the herringbone ladder, a person standing on the ladder can control the ladder feet to move back and forth, and the folding ladder is particularly suitable for decoration operation.

The invention has the following beneficial effects:

the hole sleeve of the multifunctional folding ladder is welded on the outer wall of the hinge joint and is provided with the vertically arranged mounting hole, and the table top of the folding ladder is fixedly arranged on the hole sleeve through the mounting hole and is positioned above the hinge joint to form a table in a folding state; the trundle mounting piece is a sheet metal part and is provided with a trundle mounting wall, a trundle mounting hole is formed in the trundle mounting wall, a trundle is tightly mounted in the trundle mounting hole, one side wall edge of the trundle mounting wall extends and is bent to form a hanging groove matched with and connected with a side frame of the ladder frame in a hanging mode, the trundle mounting piece is hung on the side frame of the ladder frame through the hanging groove in a hanging mode to form the folding ladder into a cart in a folding state, or the ladder frame is adjusted to be in a linear shape or an L shape through a hinge joint, and the bearing plate is tightly mounted on the trundle mounting piece to be mounted and fixed on the ladder frame to form the; has the advantages that the cart and the table can be built on the basis of the folding ladder, and the building is simple, convenient and quick.

Drawings

FIG. 1 is a first embodiment of a multi-function collapsible ladder assembly constructed as a table in accordance with the present invention;

FIG. 2 is a second embodiment of the multi-function collapsible ladder assembly of the present invention as a table;

FIG. 3 is a third embodiment of the multi-function collapsible ladder assembly of the present invention as a table;

FIG. 4 is a schematic view of the multi-function foldable ladder assembly of the present invention as constructed into a stroller;

FIG. 5 is a schematic view of the hinge joint of the multi-functional foldable ladder of the present invention;

FIG. 6 is an exploded view of the hinge joint of the multi-functional ladder of the present invention;

fig. 7 is a schematic structural view of a caster mounting member of the multi-functional foldable ladder of the present invention.

FIG. 8 is a schematic view of the multi-functional folding ladder of the present invention used as a herringbone ladder for finishing work;

FIG. 9 is a schematic view of the multi-functional foldable ladder assembly of the present invention as constructed in a linear stroller;

fig. 10 is a schematic view of the multi-function foldable ladder assembly of the present invention when constructed as an L-shaped stroller.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical idea of the invention claimed.

As shown in fig. 1-4 and fig. 7, fig. 9-10, the multifunctional folding ladder of the present invention comprises a folding ladder which is hinged by at least four sections of ladder frames 1 via a hinge joint 2 in sequence and can stand in a folded state, a hole sleeve 3, a table top 4, a caster mounting member 5, a caster 6 and a bearing plate 15, the folding ladder belongs to a four-section ladder frame folding ladder disclosed in the prior art as a chinese utility model (publication No. CN 2869275Y), the hinge joint 2 has a specific structure as a hinge connection disclosed in the prior art as a chinese utility model (publication No. CN 201087692Y), the table top 4 can be a wood table top, glass, resin or ceramic table top, the caster 6 belongs to a common pulley with a fastening seat plate on the existing market, the hinge joint 2 can be rotatably adjusted and can be positioned and fixed after adjustment, the hole sleeve 3 is welded on the outer wall of the hinge joint 2 and has a vertically arranged mounting hole 30, the hole sleeve 3 can be a threaded sleeve, and the table top 4 of the folding ladder is installed and fixed on the hole sleeve 3 through the installation hole 30 and is positioned above the hinge joint 2 to conveniently and quickly form a table in a folded state; the caster mounting piece 5 is a sheet metal part and is provided with a caster mounting wall 51, a caster mounting hole 52 is formed in the caster mounting wall 51, a caster 6 is fixedly mounted in the caster mounting hole 52, one side wall edge of the caster mounting wall 51 extends and is bent to form a hanging groove 53 matched with and connected with the side frame 11 of the ladder frame 1 in a hanging mode, and the caster mounting piece 5 is hung on the side frame 11 of the ladder frame 1 through the hanging groove 53 in a folded state to form a cart conveniently and quickly; or the ladder frame 1 is adjusted into a straight line shape or an L shape through the hinge joint 2, the bearing plate 15 is fixedly installed on the caster installing part 5 through fastening, the installation is fixed on the ladder frame 1 to form a cart, nuts can be embedded on the bottom surface of the bearing plate 15, the caster installing part 5 is reversely buckled on the side frame 11 of the ladder frame 1, and the bearing plate 15 is installed and fixed through the nuts which are connected to the bottom surface of the bearing plate 15 through the caster installing holes 52 through bolts.

Specifically, as shown in fig. 1, in the first embodiment of the present invention when the multi-functional foldable ladder is assembled into a table, a table top fixing hole 40 is provided on the bottom surface of the table top 4 corresponding to the mounting hole 30, and a bolt 7 is inserted from the lower side of the hole sleeve 3 and is connected to the mounting hole 30 and the table top fixing hole 40 to directly fasten the table top 4 to the hole sleeve 3.

Or as shown in fig. 2, in the second embodiment of the invention when the multifunctional folding ladder is assembled into a table, the long member 8 is used as an intermediate member to mount and fix the table top 4 on the hole sleeve 3, the table top fixing holes 40 are arranged on the bottom surface of the table top 4, the long member 8 is distributed with the hole bodies 80, the table top fixing holes 40 correspond to the hole bodies 80, the bolts 7 penetrate through the hole sleeves 3 from the lower part and are connected to the mounting holes 30, the hole bodies 80 and the table top fixing holes 40 to mount the table top 4 and the long member 8 on the hole sleeve 3, the table top 4 and the long member 8 are connected to other corresponding table top fixing holes 40 and the hole bodies 80 through the bolts 7 to be fastened and connected, so that the table top 4 can be assembled on the long member 8 to form a larger table top area.

Or as shown in fig. 3, the third embodiment of the invention is a table constructed by assembling the multi-functional foldable ladder, wherein the table top 4 is fixed on the hole sleeve 3 by using the suction cup 9 as an intermediate member, the suction cup 9 is fixed on the mounting hole 30 of the hole sleeve 3, and the table top 4 is fixed on the suction cup 9 by absorption, and is particularly suitable for the table top with smooth contact surface such as glass, resin, ceramic and the like.

In the above embodiments of the table built by the above components, the support frame 10 may be further provided, the support frame 10 is mounted on the pedal beam 12 of the outer ladder frame 1 when the folding ladder stands in the folded state and supported on the ground, so as to ensure that the folding ladder stands more stably and is not easy to topple in the folded state, the support frame 10 may simply include the L-shaped support 101 which is tightly mounted on the pedal beam 12 of the outer ladder frame 1 and supported on the ground, and the reinforcing inclined support 102 which is connected between the two support arms of the L-shaped support 101, and the support frame 10 is low in production cost and convenient to carry along with the folding ladder.

As shown in fig. 7, the caster mounting member 5 used when the multi-function foldable ladder of the present invention is assembled into a stroller has a structure in which caster mounting walls 51 are symmetrically provided on both sides of a hanging groove 53, and the hanging groove 53 is formed by a first sheet metal wall 54 bent to extend from one side edge of the caster mounting wall 51 and a second sheet metal wall 55 connected between the first sheet metal walls 54.

In addition, it should be added that the specific structure of the hinge joint 2 shown in fig. 5 and 6 is a hinge connection member disclosed in the chinese utility model patent (publication No. CN 201087692Y), and includes a first arm left cover 21, a first arm right cover 22, a second arm left cover 23, a second arm right cover 24, a pressing member 25, a central shaft 26, a rivet 27, a positioning key 29, a handle 210, a tension spring 211, a long shaft 212, a key seat piece 213, a small shaft 214, a spring 215, and a support 216, wherein the first arm left cover 21, the second arm left cover 23, the pressing member 25, the second arm right cover 24, and the first arm right cover 22 are sequentially disposed and rotatably and movably connected through the central shaft 26, the first arm left cover 21 and the first arm right cover 22 are connected through the rivet 27, sliding holes 28 are correspondingly disposed on the first arm left cover 21 and the first arm right cover 22, notch positioning holes 217 are correspondingly disposed on the second arm left cover 23 and the second arm right cover 24, and the upper end of the pressing member 25 is connected with the second arm left cover 251 through the pressing spring 23, The second arm right cover 24 is connected, the lower end of the jacking member 25 is placed on the positioning key 29, the positioning key 29 is connected with the positioning notch 217 and the sliding hole 28 in a plug-in manner, the first arm left cover 21, the first arm right cover 22, the handle 210 and the tension spring 211 are movably connected through the long shaft 212 in a rotating manner, the key seat sheet 213 and the spring 215 are arranged on the small shaft 214 in a penetrating manner, the small shaft 214 is connected with the positioning key 29, the spring 215 and the support 216 in a jacking manner, the support 216 and the inner side of the handle 210 are fixedly connected through a fastener, and the hole sleeve 3 is arranged on the outer wall of the first arm left cover 21 or the first arm right cover 22.

The multifunctional folding ladder can also be provided with a thread connecting hole 14 or an opening on the handle 210 of the hinge joint 2, and a nut is welded on the hole to be in threaded connection with the screw rod 13, when the screw rod 13 is screwed as shown in fig. 8, the tail end of the handle 210 can be jacked up to enable the positioning key 29 to retract away from the positioning notch 217, so that the hinge joint 2 is in an unlocking state, the joint arm cover can freely rotate for 180 degrees around the central shaft 26, when the folding ladder is folded to form a herringbone ladder, a person standing on the ladder can control the ladder feet to move back and forth, and the multifunctional folding ladder is particularly suitable for decoration operation.

Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a multi-functional folding ladder, includes by at least four sections ladder frames (1) loop through hinge joint (2) articulated connection and can be in the folding ladder that can stand under fold condition, this hinge joint (2) can rotate the regulation and can fix a position after adjusting fixedly its characterized in that: the foldable ladder is characterized by further comprising a hole sleeve (3), a table top (4), a caster mounting piece (5), casters (6) and a bearing plate (15), wherein the hole sleeve (3) is welded on the outer wall of the hinge joint (2) and is provided with a vertically arranged mounting hole (30), and the table top (4) is fixedly mounted on the hole sleeve (3) through the mounting hole (30) and is positioned above the hinge joint (2) when the foldable ladder is in a folded state;

the caster mounting piece (5) is a sheet metal part and is provided with a caster mounting wall (51), caster mounting holes (52) are formed in the caster mounting wall (51), casters (6) are tightly mounted in the caster mounting holes (52), one side wall edge of the caster mounting wall (51) extends and is bent to form a hanging groove (53) which is matched with and connected with a side frame (11) of the ladder frame (1) in a hanging mode, and the caster mounting piece (5) is hung on the side frame (11) of the ladder frame (1) through the hanging groove (53) in a folding state;

ladder frame (1) passes through hinge joint (2) are adjusted into a font or L shape, bearing plate (15) through the fastening install in truckle installed part (5) are realized the installation and are fixed in ladder frame (1).

2. The multi-functional attic ladder of claim 1, wherein: the bottom surface of the table top (4) is provided with a table top fixing hole (40) corresponding to the mounting hole (30), and a bolt (7) penetrates from the lower part of the hole sleeve (3) to be connected with the mounting hole (30) and the table top fixing hole (40) to directly fasten and mount the table top (4) on the hole sleeve (3).

3. The multi-functional attic ladder of claim 1, wherein: the table top (4) is fixedly arranged on the hole sleeve (3) through an intermediate piece.

4. The multi-functional attic ladder of claim 3, wherein: the middle part is long condition (8), the bottom surface of table mesa (4) is provided with mesa fixed orifices (40), long condition (8) are gone up to distribute and are provided with hole body (80), mesa fixed orifices (40) with hole body (80) correspond, and bolt (7) are followed the below of hole cover (3) penetrate connect in mounting hole (30), hole body (80) and mesa fixed orifices (40) will table mesa (4) and long condition (8) fixed mounting in hole cover (3), table mesa (4) with still connect in other corresponding through bolt (7) between long condition (8) mesa fixed orifices (40), hole body (80) carry out fastening connection.

5. The multi-functional attic ladder of claim 3, wherein: the middle part is a sucker (9), the sucker (9) is installed in the mounting hole (30) of the hole sleeve (3), and the table top (4) is fixed on the sucker (9) in an adsorbing mode.

6. The multi-functional attic ladder of claim 1, wherein: the caster wheel mounting walls (51) are symmetrically arranged on two sides of the hanging groove (53), and the hanging groove (53) is formed by a first sheet metal wall (54) which is bent, extended and arranged on one side wall edge of the caster wheel mounting wall (51) and a second sheet metal wall (55) connected between the first sheet metal walls (54).

7. The multi-functional attic ladder of any of claims 1-5, wherein: the folding ladder is characterized by further comprising a support frame (10), wherein the support frame (10) is installed on a pedal beam (12) of the outer side ladder frame (1) when the folding ladder stands in a folding state and is supported on the ground.

8. The multi-functional attic ladder of claim 1, wherein: the hinge joint (2) comprises a first arm left cover (21), a first arm right cover (22), a second arm left cover (23), a second arm right cover (24), a jacking piece (25), a central shaft (26), a rivet (27), a positioning key (29), a handle (210), a tension spring (211), a long shaft (212), a key seat sheet (213), a small shaft (214), a spring (215) and a support (216), wherein the first arm left cover (21), the second arm left cover (23), the jacking piece (25), the second arm right cover (24) and the first arm right cover (22) are sequentially arranged and are movably connected in a rotating manner through the central shaft (26), the first arm left cover (21) and the first arm right cover (22) are connected through the rivet (27), sliding holes (28) are correspondingly arranged on the first arm left cover (21) and the first arm right cover (22), and notch positioning holes (217) are correspondingly arranged on the second arm left cover (23) and the second arm right cover (24), the upper end of a jacking piece (25) is connected with a second arm left cover (23) and a second arm right cover (24) through a jacking spring (251), the lower end of the jacking piece (25) is placed on a positioning key (29), the positioning key (29) is connected with a positioning notch (217) and a sliding hole (28) in a plug-in mode, the first arm left cover (21), the first arm right cover (22), a handle (210) and a tension spring (211) are movably connected in a rotating mode through a long shaft (212), a key seat sheet (213) and a spring (215) are arranged on a small shaft (214) in a penetrating mode, the small shaft (214) is connected with the positioning key (29) and the spring (215) in a jacking mode, the support (216) is fixedly connected with the inner side of the handle (210) through a fastener, and a hole sleeve (3) is arranged on the outer wall of the first arm left cover (21) or the first arm right cover (22).

9. The multi-functional attic ladder of claim 8, wherein: the handle (210) is provided with a screw rod (13) which can jack the tail end of the handle (210) when being screwed so as to retract the positioning key (29) to leave the positioning notch (217) in a threaded connection way.

10. The multi-functional attic ladder of claim 9, wherein: the handle (210) is provided with a thread connecting hole (14) or an opening and a nut is welded on the hole to be in threaded connection with the mounting screw rod (13).