A stick ladder with a tool tray

Abstract

A stick ladder with a tool tray, comprising two legs rotatably connected at the top. The legs include two parallel ladder legs, and a number of treads are provided between the parallel ladder legs. It is characterized in that a leg hinge assembly is provided between the two legs, and the leg hinge assembly is oppositely arranged on the two ladder legs of the legs. A tool tray is provided on the leg hinge assembly, and a number of small grids and holes of various sizes and shapes are formed on the tool tray. Compared with the prior art, by providing a flip-up tool tray at the top of the ladder, when the ladder is unfolded, the flip-up tool tray can place the tool tray on the ladder, and a buckle detachably connected to the ladder is provided on the tool tray, so that the tool tray has better stability on the ladder. At the same time, when storing, a locking device adapted to the tool tray is provided on the legs, so that the tool tray also has good stability after being stored.

Description

Technical Field

[0001] The present invention belongs to the technical field of stick ladders, and in particular relates to a stick ladder with a tool tray. Background Art

[0002] A stick ladder is a self-standing hinge ladder. Both the ladder legs and the treads are provided with hinge joints. It is a ladder that can be folded longitudinally and transversely. Therefore, its volume is much smaller than that of most ladders, and it has great advantages in terms of both foreign trade transportation costs and household storage.

[0003] However, the current stick ladders on the market have deficiencies in terms of convenience during use. Due to the characteristics of stick ladders that can be folded longitudinally and transversely, the current stick ladders on the market do not have a tool tray like self-standing ladders that cannot be folded transversely, for placing tools and parts needed during high-altitude operations; the operator may need to climb up and down multiple times to retrieve these tools and parts, increasing the difficulty and safety hazards of the operation.

[0004] Such as Figures 13 - 14 shown, it is the basic configuration diagram of a stick ladder, including two ladder legs 1 on each side. There are several treads 2 between the two ladder legs 1 on both sides. Each tread 2 is composed of two parts hinged together. Therefore, both ends and the middle of each tread 2 can rotate upward. The two ladder legs 1 on both sides are respectively connected through a set of hinges 3, Figure 13 is in the unfolded state, Figure 14 is in the stored state.

[0005] It is difficult to place the parts and tools required by the operator on the above-mentioned stick ladder.

[0006] Therefore, in view of the difficulties and potential hazards caused by this lack of convenience, the present invention designs a tool tray adapted to the stick ladder. Summary of the Invention

[0007] The present invention aims to overcome the above-mentioned defects in the prior art and provides a stick ladder with a tool tray that has a stable structure, is safe and reliable, and does not affect the normal use of the stick ladder.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows: A stick ladder with a tool tray, comprising two legs rotatably connected at the top. The legs include two ladder legs arranged in parallel, and several tread bars are provided between the parallel ladder legs. It is characterized in that a leg hinge assembly is provided between the two legs, and the leg hinge assembly is relatively arranged on the two ladder legs of the legs; a tool tray is provided on the leg hinge assembly, and several small grids and holes of various sizes and shapes are formed on the tool tray; one end of the tool tray is hinged to the leg hinge assembly, and the other end of the tool tray is connected to another leg hinge assembly in a snap-fastening manner; the leg hinge assembly includes a leg hinge outer assembly and a leg hinge inner assembly connected to each other; a locking device for locking the tool tray is further provided on the legs.

[0009] As a preferred solution of the present invention, the leg hinge outer assembly and the leg hinge inner assembly are rotatably connected, and the leg hinge outer assembly and the leg hinge inner assembly are respectively connected to two adjacent legs. The tread bar is composed of two support bars hinged together, and the ends of the support bars are rotatably connected to the legs.

[0010] As a preferred solution of the present invention, two coaxial support brackets are formed at one end of the tool tray, and a multi-axis hinge connected to the leg hinge assembly is provided between the two coaxial support brackets.

[0011] As a preferred solution of the present invention, the multi-axis hinge includes a flipping piece and a limiting piece rotatably connected. A first shaft hole communicating with the coaxial support bracket is formed on the flipping piece, and a first rivet shaft is provided in the first shaft hole. The limiting piece is connected and rotatably connected to the leg hinge assembly.

[0012] As a preferred solution of the present invention, a second shaft hole and an arc-shaped hole are formed on the limiting piece. A double-diameter rivet shaft passing through the limiting piece, the leg hinge outer assembly and the leg hinge inner assembly in sequence is provided in the second shaft hole. A round hole communicating with the arc-shaped hole is formed on the leg hinge outer assembly, and a limiting rivet connected to the round hole is provided in the arc-shaped hole.

[0013] As a preferred solution of the present invention, a snap fastener and a second rivet shaft are provided at the other end of the tool tray. The second rivet shaft passes through the snap fastener, and a fitting hole adapted to the second rivet shaft is formed on the tool tray. The snap fastener is rotatably connected to the end of the tool tray, and the snap fastener is adapted to the leg hinge assembly.

[0014] As a preferred solution of the present invention, downwardly protruding limiting strips are provided oppositely below the tool tray, and protruding limiting platforms are provided on both the leg hinge outer assembly and the leg hinge inner assembly.

[0015] As a preferred embodiment of the present invention, the length of the limiting strip is equal to the distance between the limiting platforms on the outer component and the inner component of the ladder leg hinge, and the outer side of the limiting strip abuts against the inner side surface of the inner component of the ladder leg hinge.

[0016] As a preferred embodiment of the present invention, the locking device includes a snap, a spring and a third rivet shaft. The spring and the snap are sleeved on the third rivet shaft, and the spring abuts against the outer side of the snap. A connection hole adapted to the third rivet shaft is formed on the ladder leg.

[0017] As a preferred embodiment of the present invention, the outer component and the inner component of the ladder leg hinge are rotatably connected by a double-diameter rivet shaft.

[0018] The beneficial effects of the present invention are as follows compared with the prior art: by providing a flip-up tool tray at the top of the ladder, when the ladder is unfolded, the flip-up tool tray can place the tool tray on the ladder, and a lock for detachably connecting with the ladder is provided on the tool tray, so that the tool tray has better stability on the ladder; at the same time, when storing, a locking device adapted to the tool tray is provided on the ladder leg, so that the tool tray has good stability after being stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the use state of the tool tray of the present invention;

[0020] Figure 2 is a schematic diagram of the storage state of the tool tray of the present invention;

[0021] Figure 3 is a schematic diagram of the overall storage of the present invention;

[0022] Figure 4 is an exploded view of the tool tray;

[0023] Figure 5 is a connection schematic diagram of the ladder leg hinge assembly;

[0024] Figure 6 is a connection schematic diagram of the ladder leg hinge assembly and the multi-axis hinge;

[0025] Figure 7 is a connection schematic diagram of the tool tray and the ladder leg hinge assembly;

[0026] Figure 8 is a hinge connection schematic diagram of the tool tray and the ladder leg hinge assembly;

[0027] Figure 9 is a lock connection schematic diagram of the tool tray and the ladder leg hinge assembly;

[0028] Figure 10 is a limiting schematic diagram of the tool tray on the multi-axis hinge;

[0029] Figure 11 It is a schematic diagram of the limit of the tool tray on the multi-axis hinge;

[0030] Figure 12 It is a connection schematic diagram of the locking device;

[0031] Figure 13 It is a schematic structural diagram of the prior art;

[0032] Figure 14 It is a storage state diagram of the prior art;

[0033] Reference numerals in the figure: ladder leg 1, tread bar 2, ladder leg hinge assembly 3, outer ladder leg hinge assembly 3A, outer assembly shaft hole 3A-1, round hole 3A-2, inner ladder leg hinge assembly 3B, inner assembly shaft hole 3B-1, tool tray 4, rotating shaft bracket 5, multi-axis hinge 6, first shaft hole 6-1, second shaft hole 6-2, arc hole 6-3, first rivet shaft 7, double-diameter rivet shaft 8, first spacer washer 9, first process washer 10, limiting rivet 11, mating hole 12, second rivet shaft 13, lock 14, second spacer washer 15, second process washer 16, limiting strip 17, limiting platform 18, connection hole 19, third rivet shaft 20, spring 21, buckle 22, third spacer washer 23, concave position 24. Detailed implementation manners

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] As Figures 1 - 12 shown, a stick ladder with a tool tray includes two legs rotatably connected at the top. The legs include two parallel ladder legs 1, and several tread bars 2 are provided between the parallel ladder legs 1; a ladder leg hinge assembly 3 is provided between the two legs, and the ladder leg hinge assembly 3 is oppositely arranged on the two ladder legs 1 of the legs; a tool tray 4 is provided on the ladder leg hinge assembly 3, and several small grids and holes with different sizes and shapes are formed on the tool tray 4 for holding parts and inserting tools; one end of the tool tray 4 is hinged to the ladder leg hinge assembly 3, and the other end of the tool tray 4 is connected to another ladder leg hinge assembly 3 in a locking manner; the ladder leg hinge assembly 3 includes a connected outer ladder leg hinge assembly 3A and an inner ladder leg hinge assembly 3B; a locking device for locking the tool tray 4 is further provided on the ladder leg 1.

[0036] The outer component 3A of the ladder leg hinge and the inner component 3B of the ladder leg hinge are rotatably connected, and the outer component 3A of the ladder leg hinge and the inner side of the ladder leg hinge are respectively connected to two adjacent ladder legs 1. The tread bar 2 is composed of two support rods hinged together. The ends of the support rods are rotatably connected to the ladder legs 1. The number of tread bars 2 is set according to actual needs. Both ends and the middle of each tread bar 2 can rotate upward. When the tread bar 2 is in a horizontal state, the bottoms of the two support rods abut against each other, thereby realizing the limit of the tread bar 2.

[0037] One end of the tool tray 4 is formed with two rotating shaft brackets 5 arranged side by side, and a multi-axis hinge 6 connected to the ladder leg hinge assembly 3 is provided between the two rotating shaft brackets 5. The multi-axis hinge 6 includes a flipping piece and a limiting piece that are rotatably connected. A first shaft hole 6-1 communicating with the rotating shaft bracket 5 is formed on the flipping piece, and a first rivet shaft 7 is provided in the first shaft hole 6-1. The limiting piece is rotatably connected to the ladder leg hinge assembly 3.

[0038] The first rivet shaft 7 passes through the shaft hole of one of the rotating shaft brackets 5, the first shaft hole 6-1 of the multi-axis hinge 6, and the shaft hole of the other rotating shaft bracket 5 in sequence and is riveted and hinged, so that the tool tray 4 and the flipping piece are rotatably connected with the first rivet shaft 7 as the axis.

[0039] A second shaft hole 6-2 and an arc hole 6-3 are formed on the limiting piece. A double-diameter rivet shaft 8 that sequentially passes through the limiting piece, the outer component 3A of the ladder leg hinge, and the inner component 3B of the ladder leg hinge is provided in the second shaft hole 6-2. A round hole 3A-2 communicating with the arc hole 6-3 is formed on the outer component 3A of the ladder leg hinge, and a limiting rivet 11 connected to the round hole 3A-2 is provided in the arc hole 6-3.

[0040] A first isolation washer 9 is provided between the outer component 3A of the ladder leg hinge and the limiting piece. A first process washer 10 is provided on the outer side of the inner component 3B of the ladder leg hinge. The double-diameter rivet shaft 8 passes through the second shaft hole 6-2 of the multi-axis hinge 6, the first isolation washer 9, the outer component shaft hole 3A-1 of the outer component 3A of the ladder leg hinge, the shaft hole of the inner component 3B of the ladder leg hinge, the inner component shaft hole 3B-1, and the first process washer 10 in sequence and is riveted and hinged. Among them, after the large-diameter part of the double-diameter rivet shaft 8 only passes through the second shaft hole 6-2 of the multi-axis hinge 6, the step between the large-diameter part and the small-diameter part abuts against the plane of the first isolation washer 9, and the small-diameter part sequentially passes through the first isolation washer 9, the outer component 3A of the ladder leg hinge, the inner component 3B of the ladder leg hinge, and the first process washer 10.

[0041] The limiting rivet 11 passes through the arc-shaped hole 6-3 on the multi-axis hinge 6 and the round hole 3A-2 on the outer component 3A of the ladder leg hinge in sequence and is movably riveted. Taking the double-diameter rivet shaft 8 as the axis, due to the cooperation between the limiting rivet 11 and the arc-shaped hole 6-3, the tool plate 4 cannot rotate in the D1 direction. After rotating in the D2 direction to the extent limited by the arc-shaped hole 6-3, it will also be restricted. The position of the tool plate 4 is the maximum limit position of rotating in the D2 direction, but the rotation amplitude required for the tool plate 4 to be fixed on the ladder leg 1 during storage is within the allowable rotation range in the D2 direction.

[0042] At the top of the other end of the ladder, a double-diameter rivet shaft 8 also passes through the first isolation washer 9, the shaft hole 3A-1 of the outer component 3A of the ladder leg hinge, the inner shaft hole 3B-1 of the inner component 3B of the ladder leg hinge, and the first process washer 10 in sequence and is riveted and hinged. Among them, the step between the large-diameter part and the small-diameter part of the double-diameter rivet shaft 8 abuts against the plane of the first isolation washer 9, and the small-diameter part passes through the first isolation washer 9, the outer component 3A of the ladder leg hinge, the inner component 3B of the ladder leg hinge, and the first process washer 10 in sequence.

[0043] At the other end of the tool plate 4, there are a lock catch 14 and a second rivet shaft 13. The second rivet shaft 13 is arranged through the lock catch 14, and a fitting hole 12 adapted to the second rivet shaft 13 is formed on the tool plate 4. The lock catch 14 is rotatably connected to the end of the tool plate 4, and the lock catch 14 is adapted to the ladder leg hinge assembly 3.

[0044] A fitting hole 12 is provided at the other end of the tool plate 4. The second rivet shaft 13 passes through the lock catch 14, the second isolation washer 15, the fitting hole 12, and the second process washer 16 in sequence and is movably riveted. The technological effect after the movable riveting is that the lock catch 14 can be rotated radially by hand, but it will not move axially and will not rotate radially without external force.

[0045] Relatively arranged downwardly protruding limiting strips 17 are provided below the tool plate 4. Protruding limiting platforms 18 are provided on both the outer component 3A of the ladder leg hinge and the inner component 3B of the ladder leg hinge. The limiting strips 17 are narrow and long limiting strips. The limiting platforms 18 are located below the top platforms of the outer component 3A of the ladder leg hinge and the inner component 3B of the ladder leg hinge, and the limiting platforms 18 are located inside the outer component 3A of the ladder leg hinge and the inner component 3B of the ladder leg hinge.

[0046] The length of the limiting strips 17 is equal to the distance between the limiting platforms 18 on the outer component 3A of the ladder leg hinge and the inner component 3B of the ladder leg hinge, and the outer side of the limiting strips 17 abuts against the inner side surface of the inner component 3B of the ladder leg hinge.

[0047] Turn the tool tray 4 over and unfold it. When the bottom surface of the tool tray 4 contacts the top plane of the ladder leg hinge assembly 3, the limit strip 17 provided below the tool tray 4 will enter between the two limit platforms 18, one on each of the outer ladder leg hinge assembly 3A and the inner ladder leg hinge assembly 3B; thus restricting the movement of the tool tray 4 in the front and rear directions, causing the two ends of the limit strip 17 to abut against the limit platforms 18 on the outer ladder leg hinge assembly 3A and the inner ladder leg hinge assembly 3B respectively.

[0048] At the same time, the outer side surface of the limit strip 17 also contacts the inner side surface of the inner ladder leg hinge assembly 3B, so it also restricts the movement of the tool tray 4 in the length direction.

[0049] When the tool tray 4 is fully unfolded (i.e., when the bottom surface of the tool tray 4 contacts the top plane of the ladder leg hinge assembly 3), use your hand to move the lock catch 14 to snap into the large-diameter part of the double-diameter rivet shaft 8 between the double-diameter rivet shaft 8 and the first spacer washer 9, thereby restricting the up and down movement of the tool tray 4. At this time, the front, rear, left, right, up, and down directions of the tool tray 4 are all restricted, ensuring the stability and reliability of the tool tray during use.

[0050] The locking device includes a snap fastener 22, a spring 21, and a third rivet shaft 20. The spring 21 and the snap fastener 22 are sleeved on the third rivet shaft 20, and the spring 21 abuts against the outside of the snap fastener 22. A connection hole 19 adapted to the third rivet shaft 20 is formed on the ladder leg 1.

[0051] The locking device includes a connection hole 19 provided on one of the ladder legs on the same side of the ladder leg hinge assembly 3 where the multi-axis hinge 6 is movably riveted. The third rivet shaft 20 passes through the round holes on the spring 21, the snap fastener 22, the third spacer washer 23, and the connection hole 19 in sequence and is fixedly riveted.

[0052] One end of the spring 21 abuts against the head of the third rivet shaft 20, and the other end abuts against the plane of the snap fastener 22 with a round hole. The snap fastener 22 can be pulled by finger to move the spring 21 axially and radially on the third rivet shaft 20. When the tool tray 4 is stored, the side with the grid provided on the tool tray 4 closely adheres to the ladder leg 1, and then use your finger to pull the snap fastener 22 and press the other end of the snap fastener 22 with the round hole into the recess 24 provided below the tool tray 4. At this time, with the pressure of the spring 21 and the action of the snap fastener 22, the tool tray 4 is pressed and fixed on the ladder leg 1.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0054] Although the terms such as ladder leg 1, tread bar 2, ladder leg hinge assembly 3, outer ladder leg hinge assembly 3A, outer assembly shaft hole 3A-1, round hole 3A-2, inner ladder leg hinge assembly 3B, inner assembly shaft hole 3B-1, tool tray 4, rotating shaft bracket 5, multi-axis hinge 6, first shaft hole 6-1, second shaft hole 6-2, arc hole 6-3, first rivet shaft 7, double-diameter rivet shaft 8, first spacer washer 9, first process washer 10, limiting rivet 11, mating hole 12, second rivet shaft 13, lock 14, second spacer washer 15, second process washer 16, limiting strip 17, limiting platform 18, connecting hole 19, third rivet shaft 20, spring 21, pressing buckle 22, third spacer washer 23, concave position 24 and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention. Interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A stick ladder with a tool tray, comprising two legs rotatably connected at the top. The legs include two parallel ladder legs (1), and a plurality of tread bars (2) are provided between the parallel ladder legs (1). The tread bars (2) are composed of two support bars hinged together, and the ends of the support bars are rotatably connected to the ladder legs (1); characterized in that, There is a ladder leg hinge assembly (3) between the two support legs, and the ladder leg hinge assembly (3) is oppositely arranged on the two ladder legs (1) of the support legs; a tool tray (4) is provided on the ladder leg hinge assembly (3), and a number of small grids and holes with different sizes and shapes are formed on the tool tray (4); one end of the tool tray (4) is hinged to the ladder leg hinge assembly (3), and the other end of the tool tray (4) is connected to another ladder leg hinge assembly (3) in a snap-fastening manner; the ladder leg hinge assembly (3) includes a ladder leg hinge outer assembly (3A) and a ladder leg hinge inner assembly (3B) connected to each other; the ladder leg hinge outer assembly (3A) and the ladder leg hinge inner assembly (3B) are rotatably connected by a double-diameter rivet shaft (8); a locking device for locking the tool tray (4) is further provided on the ladder leg (1); two rotating shaft brackets (5) arranged side by side are formed at one end of the tool tray (4), and a multi-axis hinge (6) connected to the ladder leg hinge assembly (3) is provided between the two rotating shaft brackets (5); the multi-axis hinge (6) includes a flipping piece and a limiting piece connected in a rotating manner, a first shaft hole (6-1) communicating with the rotating shaft bracket (5) is formed on the flipping piece, and a first rivet shaft (7) passes through the shaft hole of one of the rotating shaft brackets (5), the first shaft hole (6-1) of the multi-axis hinge (6), and the shaft hole of the other rotating shaft bracket (5) in sequence and is riveted and hinged, and the limiting piece is rotatably connected to the ladder leg hinge assembly (3); a second shaft hole (6-2) and an arc-shaped hole (6-3) are formed on the limiting piece, a double-diameter rivet shaft (8) passing through the limiting piece, the ladder leg hinge outer assembly (3A), and the ladder leg hinge inner assembly (3B) in sequence is arranged in the second shaft hole (6-2), a round hole (3A-2) communicating with the arc-shaped hole (6-3) is formed on the ladder leg hinge outer assembly (3A), and a limiting rivet (11) connected to the round hole (3A-2) is arranged in the arc-shaped hole (6-3); at the top of the other end of the ladder, a double-diameter rivet shaft (8) also passes through a first isolation washer (9), the shaft hole (3A-1) of the ladder leg hinge outer assembly (3A), the inner shaft hole of the ladder leg hinge inner assembly (3B) (3B-1), and a first process washer (10) in sequence and is riveted and hinged, wherein the step between the large-diameter part and the small-diameter part of the double-diameter rivet shaft (8) abuts against the plane of the first isolation washer (9), and the small-diameter part passes through the first isolation washer (9), the ladder leg hinge outer assembly (3A), the ladder leg hinge inner assembly (3B), and the first process washer (10) in sequence.

2. The stick ladder with a tool tray according to claim 1, characterized in that, A snap fastener (14) and a second rivet shaft (13) are provided at the other end of the tool tray (4), the second rivet shaft (13) is arranged through the snap fastener (14), a mating hole (12) adapted to the second rivet shaft (13) is formed on the tool tray (4), the snap fastener (14) is rotatably connected to the end of the tool tray (4), and the snap fastener (14) is adapted to the ladder leg hinge assembly (3).

3. The stick ladder with a tool tray according to claim 2, characterized in that, Below the tool tray (4), there are oppositely arranged downwardly protruding limiting strips (17), and protruding limiting platforms (18) are provided on both the outer component (3A) and the inner component (3B) of the ladder leg hinge.

4. The stick ladder with a tool tray according to claim 3, characterized in that, The length of the limiting strip (17) is equal to the distance between the limiting platforms (18) on the outer component (3A) and the inner component (3B) of the ladder leg hinge, and the outer side of the limiting strip (17) abuts against the inner side surface of the inner component (3B) of the ladder leg hinge.

5. A stick ladder with a tool tray according to claim 1, characterized in that, The locking device includes a snap fastener (22), a spring (21), and a third rivet shaft (20). The spring (21) and the snap fastener (22) are sleeved on the third rivet shaft (20), and the spring (21) abuts against the outer side of the snap fastener (22). A connection hole (19) adapted to the third rivet shaft (20) is formed on the ladder leg (1).

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