CN211397407U

CN211397407U - Herringbone ladder

Info

Publication number: CN211397407U
Application number: CN201921890840.4U
Authority: CN
Inventors: 谢建民
Original assignee: Guangdong Weijing Household Product Co ltd
Current assignee: Guangdong Weijing Household Product Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-01
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to a herringbone ladder, which comprises a front ladder frame, a lower pedal, a rear ladder frame and an upper pedal; is characterized by also comprising an armrest structure and a lock pin structure; the handrail structure comprises an upper fixing sleeve, an upper handrail sleeve, a handrail rod, a lower handrail sleeve, a lower fixing sleeve and a positioning hook; the upper fixing sleeve and the lower fixing sleeve are fixedly arranged on the corresponding front ladder bar, the upper fixing sleeve is positioned above the lower fixing sleeve, the upper handrail sleeve and the lower handrail sleeve are respectively and fixedly arranged at the upper end and the lower end of the handrail bar, the upper handrail sleeve is rotatably arranged on the upper fixing sleeve, and the lower handrail sleeve is rotatably arranged on the lower fixing sleeve; the positioning hook is arranged on the upper handrail sleeve, the lock pin structure is arranged on the corresponding front ladder rod, and the lock pin structure can be inserted into the positioning hook so as to position the handrail rod. The household storage is convenient, the space occupied by transportation is reduced, the transportation cost is reduced, and the use and storage are safe, simple and reliable.

Description

Herringbone ladder

Technical Field

The utility model relates to a double ladder.

Background

The existing herringbone ladder comprises a front ladder frame, a connecting rod, a rear ladder frame, an upper pedal, more than one lower pedal and handrails; the front ladder frame comprises two front ladder rods, and the rear ladder frame comprises two rear ladder rods; the two rear ladder bars are respectively and rotatably arranged on the corresponding front ladder bars, two sides of one end of the upper pedal are respectively and rotatably arranged on the two front ladder bars, and the other end of the upper pedal is respectively and rotatably arranged on the two rear ladder bars; the both ends of footboard all install on two preceding ladder poles and lie in the below of footboard down, the handrail is established on two preceding ladder poles. The handrails are arranged on the herringbone ladder, so that the herringbone ladder occupies too large space, is inconvenient to store in families, occupies large space in transportation and has high transportation cost; on the other hand, after the herringbone ladder is stored, the front lifting rod and the rear ladder rod are easy to separate, the herringbone ladder collapses, and the potential safety hazard of the stroke exists.

Disclosure of Invention

The utility model aims at overcoming prior art not enough and providing a double ladder, the family is accomodate conveniently, has reduced the shared space of transportation, has reduced the cost of transportation, uses and accomodates safety, and is simple reliable.

In order to achieve the purpose, the utility model is realized in such a way that the herringbone ladder comprises a front ladder frame, more than one lower pedal, a rear ladder frame and an upper pedal; the front ladder frame comprises two front ladder rods, the rear ladder frame comprises two rear ladder rods, and the two rear ladder rods are respectively and rotatably arranged on the corresponding front ladder rods; two sides of one end of the upper pedal are respectively and rotatably arranged on the two front ladder bars, two sides of the other end of the upper pedal are respectively and rotatably arranged on the two rear ladder bars, and two ends of the lower pedal are both fixedly arranged on the two front ladder bars and are positioned below the upper pedal; it is characterized by also comprising more than one handrail structure and more than one locking pin structure;

the handrail structure comprises an upper fixing sleeve, an upper handrail sleeve, a handrail rod, a lower handrail sleeve, a lower fixing sleeve and a positioning hook; the upper fixing sleeve and the lower fixing sleeve are fixedly arranged on the corresponding front ladder bar, the upper fixing sleeve is positioned above the lower fixing sleeve, the upper handrail sleeve and the lower handrail sleeve are respectively and fixedly arranged at the upper end and the lower end of the handrail bar, the upper handrail sleeve is rotatably arranged on the upper fixing sleeve, and the lower handrail sleeve is rotatably arranged on the lower fixing sleeve; the positioning hook is arranged on the upper handrail sleeve, the lock pin structure is arranged on the corresponding front ladder rod, and the lock pin structure can be inserted into the positioning hook so as to position the handrail rod.

In the technical scheme, an upper rotating shaft is arranged on the upper fixed sleeve, and the upper handrail sleeve is rotatably connected with the upper fixed sleeve through the upper rotating shaft; the lower fixed sleeve is provided with a lower rotating shaft, and the lower handrail sleeve is rotatably connected with the lower fixed sleeve through the lower rotating shaft.

In the technical scheme, the upper handrail sleeve and the lower handrail sleeve are matched with the outer wall of the front ladder rod.

In the technical scheme, the lock pin structure comprises a shell, a return spring and a bolt; the shell is arranged on the corresponding front ladder rod and positioned below the upper handrail sleeve, a moving space is arranged in the shell, the bolt is inserted on the shell and can move up and down, the bolt is provided with an anti-falling block, the anti-falling block is positioned in the moving space, and the top of the bolt can be inserted in the positioning hook so as to position the handrail rod; the reset spring is located in the moving space and sleeved on the plug pin, one end of the reset spring abuts against the anti-falling block, and the other end of the reset spring abuts against the inner wall of the moving space.

In the technical scheme, the ladder further comprises a handle, and the handle is installed on the front ladder bar.

In the technical scheme, the device also comprises a locking block and a self-locking structure; the self-locking structure comprises a mounting base, an upper spring, an upper marble, a lower spring and a lower marble; the mounting base is mounted on the front ladder rod, and an upper cavity with a downward opening and a lower cavity with an upward opening are arranged on the mounting base; the upper spring and the upper marble are arranged in the upper cavity, one end of the upper spring abuts against the upper marble, and the other end of the upper spring abuts against the inner wall of the upper cavity; the lower spring and the lower marble are arranged in the lower cavity, one end of the lower spring abuts against the lower marble, and the other end of the lower spring abuts against the inner wall of the lower cavity; the locking piece is arranged on the rear ladder rod, and the convex part of the locking piece can be clamped between the upper marble and the lower marble.

In this technical scheme, still including putting the thing box, put the top that the thing box was installed at two preceding ladder poles.

In the technical scheme, a handle which is convenient for pushing the bolt is arranged at the bottom of the bolt.

Compared with the prior art, the utility model the advantage do: the household storage is convenient, the transportation cost is moderate, the use and the storage are safe, simple and reliable.

Drawings

Fig. 1 is a perspective view of the present invention.

FIG. 2 is a schematic view of the matching structure of the armrest sleeve and the armrest rod on the upper fixing sleeve of the utility model;

FIG. 3 is a schematic view of the matching structure of the upper fixing sleeve, the upper armrest sleeve, the armrest rod and the positioning hook of the present invention;

FIG. 4 is a schematic structural view of the locking pin structure of the present invention;

fig. 5 is a schematic view of the matching structure of the lower fixing sleeve, the lower handrail sleeve and the handrail rod of the present invention;

FIG. 6 is a top view of FIG. 1;

FIG. 7 is a sectional view A-A of FIG. 6;

fig. 8 is an enlarged view of a portion B of fig. 7.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 8, it is a trestle ladder, which comprises a front ladder frame, more than one lower step 2, a rear ladder frame and an upper step 7; the front ladder frame comprises two front ladder bars 1, the rear ladder frame comprises two rear ladder bars 6, and the two rear ladder bars 6 are respectively and rotatably arranged on the corresponding front ladder bars 1; two sides of one end of the upper pedal 7 are respectively and rotatably arranged on the two front ladder bars 1, two sides of the other end of the upper pedal 7 are respectively and rotatably arranged on the two rear ladder bars 6, and two ends of the lower pedal 2 are both fixedly arranged on the two front ladder bars 1 and positioned below the upper pedal 7; the handrail structure 3 and the locking pin structure 5 are also included;

the handrail structure 3 comprises an upper fixing sleeve 31, an upper handrail sleeve 32, a handrail rod 33, a lower handrail sleeve 34, a lower fixing sleeve 35 and a positioning hook 36; the upper fixing sleeve 31 and the lower fixing sleeve 35 are both fixedly installed on the corresponding front ladder bar 1, the upper fixing sleeve 31 is positioned above the lower fixing sleeve 35, the upper handrail sleeve 32 and the lower handrail sleeve 34 are respectively and fixedly installed at the upper end and the lower end of the handrail bar 33, the upper handrail sleeve 32 is rotatably installed on the upper fixing sleeve 31, and the lower handrail sleeve 34 is rotatably installed on the lower fixing sleeve 35; the positioning hook 36 is mounted on the upper handrail sleeve 32, the locking pin structure 5 is mounted on the corresponding front ladder bar 1, and the locking pin structure 5 is inserted into the positioning hook 36 to position the handrail 33.

When the grab bar 33 is needed to be used, the positioning hook 36 hooks the lock pin structure 5 after the grab bar 33 is completely opened, so that the grab bar 33 is positioned; when the grab bar 33 needs to be folded, the lock pin structure 5 is pushed, so that the lock pin structure 5 is disengaged from the positioning hook 36, and the grab bar 33 is folded. The armrest structure 3 and the lock pin structure 5 may be one or two, as the case may be.

In this embodiment, an upper rotating shaft 37 is provided on the upper fixing sleeve 31, and the upper glove 32 is rotatably connected with the upper fixing sleeve 31 through the upper rotating shaft 37; the lower fixing sleeve 35 is provided with a lower rotating shaft 38, and the lower armrest sleeve 34 is rotatably connected with the lower fixing sleeve 35 through the lower rotating shaft 38.

In this embodiment, the upper handrail sleeve 32 and the lower handrail sleeve 34 are adapted to the outer wall of the front ladder bar 1.

In this embodiment, the latch structure 5 includes a housing 51, a return spring 52 and a latch 53; the shell 51 is arranged on the corresponding front ladder rod 1 and is positioned below the upper handrail sleeve 32, a moving space 54 is arranged in the shell 51, the bolt 53 is inserted on the shell 51 and can move up and down, the bolt 53 is provided with an anti-falling block 531, the anti-falling block 531 is positioned in the moving space 54, and the top of the bolt 53 can be inserted in the positioning hook 36 so as to position the handrail rod 33; the return spring 52 is located in the moving space 54 and sleeved on the pin 53, one end of the return spring 52 abuts against the anti-falling block 531, and the other end of the return spring 52 abuts against the inner wall of the moving space 54.

When the grab bar 33 needs to be folded, the bolt 53 is pulled downwards, the top of the bolt 53 is disengaged from the positioning hook 36, and the grab bar 33 is folded; when the grab bar 33 is to be used, the positioning hook 36 is hooked on the cross pin 53, thereby positioning the grab bar 33.

In this embodiment, a handle 10 is further included, and the handle 10 is mounted on the front ladder bar 1.

In this embodiment, the locking device further comprises a locking block 8 and a self-locking structure 9; the self-locking structure 9 comprises a mounting base 91, an upper spring 92, an upper marble 93, a lower spring 94 and a lower marble 95; the mounting base 91 is mounted on the front ladder bar 1, and an upper cavity 911 with a downward opening and a lower cavity 912 with an upward opening are arranged on the mounting base 91; the upper spring 92 and the upper marble 93 are both arranged in the upper cavity 911, one end of the upper spring 92 abuts against the upper marble 93, and the other end of the upper spring 92 abuts against the inner wall of the upper cavity 911; the lower spring 94 and the lower marble 95 are both arranged in the lower cavity 912, one end of the lower spring 94 abuts against the lower marble 95, and the other end of the lower spring 94 abuts against the inner wall of the lower cavity 912; the locking piece 8 is arranged on the rear ladder bar 6, and the convex part of the locking piece 8 can be clamped between the upper marble 93 and the lower marble 95. After the herringbone ladder is folded, the locking block 8 is clamped on the upper marble 93 and the lower marble 95, so that the front lifting rod 1 and the rear ladder rod 6 cannot be separated under the action of no external force, and the herringbone ladder is safe and reliable.

In this embodiment, the ladder further comprises a storage box 4, and the storage box 4 is installed on the tops of the two front ladder bars 1.

In this embodiment, a handle is disposed at the bottom of the plug 53 for facilitating pushing the plug 53.

The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention.

Claims

1. A herringbone ladder comprises a front ladder frame, more than one lower pedal (2), a rear ladder frame and an upper pedal (7); the front ladder frame comprises two front ladder rods (1), the rear ladder frame comprises two rear ladder rods (6), and the two rear ladder rods (6) are respectively and rotatably arranged on the corresponding front ladder rods (1); two sides of one end of the upper pedal (7) are respectively rotatably arranged on the two front ladder bars (1), two sides of the other end of the upper pedal (7) are respectively rotatably arranged on the two rear ladder bars (6), and two ends of the lower pedal (2) are fixedly arranged on the two front ladder bars (1) and are positioned below the upper pedal (7); it is characterized by also comprising more than one handrail structure (3) and more than one lock pin structure (5);

the handrail structure (3) comprises an upper fixing sleeve (31), an upper handrail sleeve (32), a handrail rod (33), a lower handrail sleeve (34), a lower fixing sleeve (35) and a positioning hook (36); the upper fixing sleeve (31) and the lower fixing sleeve (35) are both fixedly mounted on the corresponding front ladder bar (1), the upper fixing sleeve (31) is positioned above the lower fixing sleeve (35), the upper handrail sleeve (32) and the lower handrail sleeve (34) are respectively and fixedly mounted at the upper end and the lower end of the handrail bar (33), the upper handrail sleeve (32) is rotatably mounted on the upper fixing sleeve (31), and the lower handrail sleeve (34) is rotatably mounted on the lower fixing sleeve (35); the positioning hook (36) is arranged on the upper handrail sleeve (32), the lock pin structure (5) is arranged on the corresponding front ladder rod (1), and the lock pin structure (5) can be inserted into the positioning hook (36) so as to position the handrail rod (33).

2. The herringbone ladder according to claim 1, wherein an upper rotating shaft (37) is arranged on the upper fixing sleeve (31), and the upper supporting sleeve (32) is rotatably connected with the upper fixing sleeve (31) through the upper rotating shaft (37); the lower fixing sleeve (35) is provided with a lower rotating shaft (38), and the lower glove holding part (34) is rotatably connected with the lower fixing sleeve (35) through the lower rotating shaft (38).

3. A ladder according to claim 1, characterised in that the upper and lower gloves (32, 34) are adapted to the outer wall of the front ladder bar (1).

4. A herringbone ladder according to claim 1, characterized in that said locking pin structure (5) comprises a housing (51), a return spring (52) and a latch (53); the shell (51) is arranged on the corresponding front ladder rod (1) and located below the upper handrail sleeve (32), a moving space (54) is arranged in the shell (51), the bolt (53) is inserted into the shell (51) and can move up and down, the bolt (53) is provided with an anti-falling block (531), the anti-falling block (531) is located in the moving space (54), and the top of the bolt (53) can be inserted into the positioning hook (36) so as to position the handrail rod (33); the reset spring (52) is positioned in the moving space (54) and sleeved on the bolt (53), one end of the reset spring (52) abuts against the anti-falling block (531), and the other end of the reset spring (52) abuts against the inner wall of the moving space (54).

5. A trestle ladder according to claim 1, characterized in that it further comprises a handle (10), said handle (10) being mounted on the front ladder bar (1).

6. The herringbone ladder of claim 1, further comprising a locking block (8) and a self-locking structure (9); the self-locking structure (9) comprises a mounting base (91), an upper spring (92), an upper marble (93), a lower spring (94) and a lower marble (95); the mounting base (91) is mounted on the front ladder bar (1), and an upper cavity (911) with a downward opening and a lower cavity (912) with an upward opening are arranged on the mounting base (91); the upper spring (92) and the upper marble (93) are arranged in the upper cavity (911), one end of the upper spring (92) abuts against the upper marble (93), and the other end of the upper spring (92) abuts against the inner wall of the upper cavity (911); the lower spring (94) and the lower marble (95) are both arranged in the lower cavity (912), one end of the lower spring (94) abuts against the lower marble (95), and the other end of the lower spring (94) abuts against the inner wall of the lower cavity (912); the lock block (8) is arranged on the rear ladder rod (6), and the convex part of the lock block (8) can be clamped between the upper marble (93) and the lower marble (95).

7. The herringbone ladder according to claim 1, further comprising a storage box (4), wherein the storage box (4) is mounted on the top of the two front ladder bars (1).

8. A herringbone ladder according to claim 4, characterized in that a handle facilitating pushing of the bolt (53) is provided at the bottom of said bolt (53).