CN210396602U - Herringbone ladder - Google Patents
Herringbone ladder Download PDFInfo
- Publication number
- CN210396602U CN210396602U CN201920873903.9U CN201920873903U CN210396602U CN 210396602 U CN210396602 U CN 210396602U CN 201920873903 U CN201920873903 U CN 201920873903U CN 210396602 U CN210396602 U CN 210396602U
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- ladder
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- ladder foot
- connecting rod
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Abstract
The utility model relates to a herringbone ladder, which comprises a front ladder foot, a rear ladder foot and a folding pedal component, wherein the front ladder foot is hinged with the rear ladder foot, the front ladder foot and the rear ladder foot are mutually unfolded or mutually folded, the folding pedal component comprises a first folding pedal, a second folding pedal, a first connecting rod and a second connecting rod, the first folding pedal and the second folding pedal are respectively hinged on the front ladder foot, the front end part of the first connecting rod is hinged on the first folding pedal, the rear end part of the first connecting rod is hinged on the second folding pedal, the front end part of the second connecting rod is hinged with the rear end part of the first connecting rod, the rear end part of the second connecting rod is hinged on the rear ladder foot, a pedal rod for supporting and clamping the first folding pedal is arranged on the rear ladder foot, the herringbone ladder is difficult to deform after being unfolded through two stable triangular structures, thereby improving the stability of the herringbone ladder, and after the herringbone ladder is unfolded, the connecting line of the rotating points of the second connecting rod and the second folding pedal is positioned on the same straight line, so that self-locking is realized, and accidental folding is prevented.
Description
Technical Field
The utility model relates to a double ladder.
Background
The herringbone ladder is characterized in that front ladder feet and rear ladder feet are connected through riveting shafts or other modes, and a stable triangular structure is formed by combining pedals, the triangular structure provides the most basic stability requirement of the herringbone ladder, but a safety device is additionally arranged to ensure that the front and rear feet cannot be accidentally folded when a user uses the ladder, so that accidents are caused.
With the continuous upgrade of safety requirements, the design of such a basic stable "triangular" structure has not been able to meet the use requirements, and at the same time, challenges are presented to the existing design in pursuit of improving the user experience and reducing the production cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a firm in structure, strong two "triangle-shaped" structures of stability and can automatic locking's double ladder after expanding.
The purpose of the utility model is realized like this:
a herringbone ladder comprises a front ladder foot, a rear ladder foot and a folding pedal assembly, wherein the front ladder foot and the rear ladder foot are hinged, the front ladder foot and the rear ladder foot are mutually unfolded or folded, the folding pedal assembly comprises a first folding pedal, a second folding pedal, a first connecting rod and a second connecting rod, the first folding pedal and the second folding pedal are respectively hinged on the front ladder foot, the front end part of the first connecting rod is hinged on the first folding pedal, the rear end part of the first connecting rod is hinged on the second folding pedal, the front end part of the second connecting rod is hinged with the rear end part of the first connecting rod, the rear end part of the second connecting rod is hinged on the rear ladder foot, and a pedal stick used for supporting and clamping the first folding pedal is arranged on the rear ladder foot; the front ladder foot and the rear ladder foot are unfolded mutually to drive the first pedal and the second pedal to be unfolded, the first pedal is clamped on the step stick, the front ladder foot, the rear ladder foot and the first pedal form a first stable triangular structure, and meanwhile, the connecting line of the rotating points of the second connecting rod and the second pedal is positioned on the same straight line, so that the front ladder foot, the rear ladder foot, the second connecting rod and the second pedal form a second stable triangular structure. When the double ladder expandes, preceding ladder foot, back ladder foot and first folding footboard form first stable triangle-shaped structure, preceding ladder foot, back ladder foot, second connecting rod and second folding footboard form second stable triangle-shaped structure, through two stable triangle-shaped structures, be difficult to deformation after the double ladder expandes, thereby improve the stability of double ladder, and after the double ladder expandes, second connecting rod and second folding footboard rotation point line are in on the same straight line, realize the auto-lock, prevent unexpected receipts, and no longer additionally need the safety hook design, improve the practicality of double ladder.
The purpose of the utility model can also adopt the following technical measures to solve:
as more specific scheme, the front ladder foot includes left branch foot, right branch foot and handrail portion, the left branch foot is connected to handrail portion left end, and right branch foot is connected to handrail portion right-hand member, the interval is provided with fixed footboard between left branch foot and the right branch foot, left branch foot is connected with the embedding mode to fixed footboard, and right branch foot is connected with the embedding mode to the fixed footboard other end. Adopt embedded connected mode between fixed footboard and the left branch foot or the right branch foot, both reduced the joint gap between footboard and left branch foot and the right branch foot, improved stability again, simultaneously because the mutual block of fixed footboard and left branch foot or right branch foot, greatly strengthened the anti-shear capacity who marks time.
As a more specific scheme, one end of the fixed pedal is inserted into an inner cavity of the left supporting leg and locked on the left supporting leg through a rivet, and the other end of the fixed pedal is inserted into an inner cavity of the right supporting leg and locked on the right supporting leg through a rivet.
More specifically, the armrest part is provided with a cavity convenient for storing tools.
As a more specific scheme, a reinforcing rib is arranged between the fixed pedal and the front ladder foot, one end of the reinforcing rib is connected with the front ladder foot, and the other end of the reinforcing rib is connected with the fixed pedal.
More specifically, the rear ladder leg comprises a left rear ladder leg and a right rear ladder leg, and a plurality of step sticks are arranged between the left rear ladder leg and the right rear ladder leg at intervals.
As a more specific scheme, the rungs close to the bottoms of the rear ladder feet are provided with reinforcing ribs, one ends of the reinforcing ribs are connected with the rear ladder feet, and the other ends of the reinforcing ribs are connected with the rungs.
More specifically, the hinge joint of the front ladder leg and the rear ladder leg is provided with a connecting lug which shields the hinge joint of the front ladder leg and the rear ladder leg.
The utility model has the advantages as follows:
the utility model discloses, when the double ladder expandes, preceding ladder foot, back ladder foot and first folding footboard form first stable triangle-shaped structure, preceding ladder foot, back ladder foot, second connecting rod and the second folding footboard form the stable triangle-shaped structure of second, through two stable triangle-shaped structures, be difficult to deformation after the double ladder expandes, thereby improve the stability of double ladder, and the double ladder expandes the back, second connecting rod and second folding footboard turning point line are in on the same straight line, realize the auto-lock, prevent unexpected receipts and close, and no longer additionally need the safety hook design, improve the practicality of double ladder.
The utility model discloses, adopt embedded connected mode between fixed footboard and left branch foot or the right branch foot, both reduced the joint gap between footboard and left branch foot and the right branch foot, improved stability again, simultaneously because the mutual block of fixed footboard and left branch foot or right branch foot, greatly strengthened the anti-shear capacity of marking time.
This patent the double ladder structure possess more stable two "triangle-shaped" structural design and two collapsible big platforms, and the ladder utensil can satisfy higher safety requirement and provide better result of use, reaches the requirement of auto-lock under the condition that does not need the insurance hook simultaneously, has improved user experience. In addition, the cost of the product is reduced due to the saving of the safety device from the aspect of the product cost.
Drawings
Fig. 1 is a schematic view of the herringbone ladder of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic view of two stable triangular structures of the herringbone ladder of the present invention.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
in the embodiment, as shown in the structure diagrams 1 to 3, a herringbone ladder comprises a front ladder leg 1, a rear ladder leg 2, a folding pedal assembly 3 and a connecting lug 4, wherein the front ladder leg 1 comprises a left supporting leg 11, a right supporting leg 12 and an armrest part 13, the armrest part 13 is provided with a cavity 131 convenient for storing tools, the left end of the armrest part 13 is connected with the left supporting leg 11, the right end of the armrest part 13 is connected with the right supporting leg 12, a fixed pedal 14 is arranged between the left supporting leg 11 and the right supporting leg 12 at intervals, the fixed pedal 14 is embedded in the left supporting leg 11 and locked on the left supporting leg 11 through a rivet, and the other end of the fixed pedal 14 is embedded in the right supporting leg 12 and locked on the right supporting leg 12 through a rivet.
Reinforcing ribs 5 are arranged between the fixed pedal 14 and the front ladder foot 1, one end of each reinforcing rib 5 is connected with the front ladder foot 1, and the other end of each reinforcing rib 5 is connected with the fixed pedal 14.
Preceding ladder foot 1 and back ladder foot 2 are articulated, expand each other or fold each other between preceding ladder foot 1 and the back ladder foot 2, coupling ear 4 sets up in the articulated department of preceding ladder foot 1 and back ladder foot 2, and coupling ear 4 shelters from preceding ladder foot 1 and the articulated department of back ladder foot 2.
Folding footboard subassembly 3 includes first folding footboard 31, the folding footboard 32 of second, first connecting rod 33 and second connecting rod 34, first folding footboard 31 and the folding footboard 32 of second articulate respectively on preceding step foot 1, on the articulated first folding footboard 31 of tip before first connecting rod 33, on the articulated second folding footboard 32 of tip behind first connecting rod 33, tip and first connecting rod 33 rear end portion are articulated before second connecting rod 34, second connecting rod 34 rear end portion articulates on back step foot 2, be provided with on the back step foot 2 and be used for the bearing and the step 6 of the first folding footboard 31 of chucking.
The areas of the first folding pedal 31 and the second folding pedal 32 are larger than that of the fixed pedal 14, so that the first folding pedal 31 and the second folding pedal 32 provide comfortable standing environment for users after being unfolded, and the user has safer and more reliable use effect.
When the herringbone ladder is unfolded: the front ladder foot 1 and the rear ladder foot 2 are unfolded mutually to drive the first pedal and the second pedal to be unfolded, the first pedal is tightly clamped on the step stick 6, the front ladder foot 1, the rear ladder foot 2 and the first pedal form a first stable triangular structure, meanwhile, the connecting line of the rotating points of the second connecting rod 34 and the second pedal is positioned on the same straight line, the front ladder foot 1, the rear ladder foot 2, the second connecting rod 34 and the second pedal form a second stable triangular structure, and the connecting line of the rotating points of the first connecting rod 33 and the second pedal is positioned on the same straight line, so that the self-locking of the herringbone ladder is realized.
When the herringbone ladder is folded: lifting the hinged parts of the first connecting rod 33, the second connecting rod 34 and the second folding pedal 32 to enable the connecting lines of the rotating points of the second folding pedal 32 and the second connecting rod 34 not to be on the same straight line, thereby unlocking the self-locking, folding the front ladder leg 1 and the rear ladder leg 2 mutually at the moment, and simultaneously turning over the first folding pedal 31 and the second folding pedal 32, thereby completing the folding of the herringbone ladder.
Claims (8)
1. A double ladder, includes preceding ladder foot, back ladder foot and folding footboard subassembly, preceding ladder foot is articulated with back ladder foot, expandes or folds each other between preceding ladder foot and the back ladder foot, its characterized in that: the folding pedal assembly comprises a first folding pedal, a second folding pedal, a first connecting rod and a second connecting rod, the first folding pedal and the second folding pedal are respectively hinged to the front ladder foot, the front end part of the first connecting rod is hinged to the first folding pedal, the rear end part of the first connecting rod is hinged to the second folding pedal, the front end part of the second connecting rod is hinged to the rear end part of the first connecting rod, the rear end part of the second connecting rod is hinged to the rear ladder foot, and a pedal used for supporting and clamping the first folding pedal is arranged on the rear ladder foot; the front ladder foot and the rear ladder foot are unfolded mutually to drive the first pedal and the second pedal to be unfolded, the first pedal is clamped on the step stick, the front ladder foot, the rear ladder foot and the first pedal form a first stable triangular structure, and meanwhile, the connecting line of the rotating points of the second connecting rod and the second pedal is positioned on the same straight line, so that the front ladder foot, the rear ladder foot, the second connecting rod and the second pedal form a second stable triangular structure.
2. The herringbone ladder of claim 1, wherein: the front ladder foot comprises a left supporting leg, a right supporting leg and an armrest part, the left supporting leg is connected to the left end of the armrest part, the right supporting leg is connected to the right end of the armrest part, fixed pedals are arranged between the left supporting leg and the right supporting leg at intervals, the left supporting leg is connected with the fixed pedals in an embedded mode, and the right supporting leg is connected with the other end of the fixed pedals in an embedded mode.
3. The herringbone ladder of claim 2, wherein: one end of the fixed pedal is inserted into the inner cavity of the left supporting leg and is locked on the left supporting leg through a rivet, and the other end of the fixed pedal is inserted into the inner cavity of the right supporting leg and is locked on the right supporting leg through a rivet.
4. The herringbone ladder of claim 2, wherein: the armrest part is provided with a cavity convenient for storing tools.
5. The herringbone ladder of claim 2, wherein: reinforcing ribs are arranged between the fixed pedal and the front ladder foot, one end of each reinforcing rib is connected with the front ladder foot, and the other end of each reinforcing rib is connected with the fixed pedal.
6. The herringbone ladder of claim 1, wherein: the back ladder foot includes left back ladder foot and right back ladder foot, the interval is provided with a plurality ofly between left back ladder foot and the right back ladder foot step on the rod.
7. The herringbone ladder of claim 5, wherein: the step rod near the bottom of the rear ladder foot is provided with a reinforcing rib, one end of the reinforcing rib is connected with the rear ladder foot, and the other end of the reinforcing rib is connected with the step rod.
8. The herringbone ladder of claim 1, wherein: the hinge joint of the front ladder leg and the rear ladder leg is provided with a connecting lug which shields the hinge joint of the front ladder leg and the rear ladder leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873903.9U CN210396602U (en) | 2019-06-11 | 2019-06-11 | Herringbone ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873903.9U CN210396602U (en) | 2019-06-11 | 2019-06-11 | Herringbone ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210396602U true CN210396602U (en) | 2020-04-24 |
Family
ID=70348640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920873903.9U Active CN210396602U (en) | 2019-06-11 | 2019-06-11 | Herringbone ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210396602U (en) |
-
2019
- 2019-06-11 CN CN201920873903.9U patent/CN210396602U/en active Active
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