CN218759691U - Hinge limiting structure of ladder - Google Patents
Hinge limiting structure of ladder Download PDFInfo
- Publication number
- CN218759691U CN218759691U CN202222250188.8U CN202222250188U CN218759691U CN 218759691 U CN218759691 U CN 218759691U CN 202222250188 U CN202222250188 U CN 202222250188U CN 218759691 U CN218759691 U CN 218759691U
- Authority
- CN
- China
- Prior art keywords
- hinge
- hinge piece
- piece
- ladder
- limiting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A hinge limit structure of a ladder comprises an inner hinge plate, an outer hinge plate and a locking piece; the head part of the outer hinge plate is a rotating disc, and a gap is formed in the thickness direction of the rotating disc; the head of the inner hinge piece is a positioning disc and further comprises a first limiting part and a second limiting part, when the ladder is opened and is not overloaded, a gap is formed between the first limiting part and the second limiting part, when the ladder is overloaded, the first limiting part and the second limiting part are mutually abutted and matched, one of the two limiting parts is positioned on the inner hinge piece of the hinge joint, and the other limiting part is positioned on the outer hinge piece of the hinge joint; wherein, first spacing portion is the boss, and on the outer fringe of positioning disk was located to this boss, the spacing portion of second was the stopper, and during outer hinge piece was located to this stopper, improved ladder utensil and operator's factor of safety, can also make the operator can in time discover the problem that ladder utensil exists, can in time maintain and change, be difficult for causing the accident.
Description
Technical Field
The utility model relates to a ladder field of ascending a height, concretely relates to hinge limit structure of ladder.
Background
The ladder comprises ladder, climbing platform and other common climbing tools in daily work and life, taking ladder as an example, the ladder has wide application range, wherein the multifunctional ladder usually has two states of opening and folding, and can be in a 'straight ladder state' or 'herringbone ladder state' under different opening states through a locking structure.
The climbing operation is a high-risk operation, the ladder is required to ensure enough safety when in use, and particularly, the inner hinge piece and the outer hinge piece of the hinge joint are in a straight shape and are more sensitive to external force in a straight ladder state.
In the prior art, only the locking piece of the ladder resists external force and keeps the straight shape of the inner hinge and the outer hinge, the locking piece can be worn and reduced in strength after long-term use, but a user cannot easily find that when the weight loaded on the ladder exceeds the bearing capacity of the locking piece, the locking piece is broken and loses the locking function of the ladder, and the user is caused to have an accident.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a hinge limit structure of ladder utensil.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a hinge limit structure of a ladder comprises an inner hinge plate, an outer hinge plate and a locking piece;
the head part of the outer hinge sheet is a rotating disc, and a gap is formed in the thickness direction of the rotating disc; the head part of the inner hinge sheet is a positioning disc which is rotatably arranged in a gap of the rotating disc and is hinged with the rotating disc;
the locking piece is arranged corresponding to the central shafts of the rotating disc and the positioning disc and is used for locking at least the opening states of the rotating disc and the positioning disc;
the first limiting part and the second limiting part are mutually abutted and matched when the ladder is opened and is not overloaded, one of the two limiting parts is positioned on the inner hinge piece of the hinge joint, and the other limiting part is positioned on the outer hinge piece of the hinge joint;
the first limiting part is a boss which is arranged on the outer edge of the positioning disc and extends along the radial direction of the positioning disc;
the second limiting part is a limiting block, the limiting block is arranged in the outer hinge piece, and the end face of the limiting block corresponds to the boss.
In the above-mentioned scheme, "overload"'s meaning is ascending a height personnel or other qualities that are carried on the ladder of ascending a height exceed the locking ability of locking piece to the ladder utensil, when surpassing the locking ability of locking piece, the locking piece can break and lose the locking function to the ladder utensil, stopper on the outer hinge piece this moment can support with the boss on the interior hinge piece and lean on together, carry out spacingly to the ladder utensil when the locking piece is cracked, prevent that the user from taking place the accident, specific factor of safety has been improved, and produce a shake when supporting, remind the user that locking device has damaged, can in time change the locking mechanical system who damages.
In a further technical scheme, the limiting block is in a thick plate shape or a block shape; the stress strength is higher, and the safety of operating personnel is improved.
In a further technical scheme, the range of a gap angle between the first limiting part and the second limiting part is (0, 1), when the angle is too large, the gap is large, when the locking piece loses action, the boss and the limiting block of the limiting structure shake too much in the abutting process due to the fact that the gap is too large, operators can fall off directly easily, and accidents happen.
In a further technical scheme, the outer hinge piece comprises a first hinge piece and a second hinge piece, the first hinge piece and the second hinge piece are parallel to each other and are arranged at intervals, and the heads of the first hinge piece and the second hinge piece form the rotating disc;
the inner hinge piece comprises a third hinge piece and a fourth hinge piece, the third hinge piece and the fourth hinge piece are fixedly arranged, and the heads of the third hinge piece and the fourth hinge piece form the positioning disc;
the limiting block is positioned between the first hinge piece and the second hinge piece; make the stopper more firm, improve the atress ability, improve the factor of safety of ladder utensil.
In a further technical scheme, a pair of first through holes are formed in the first hinge piece and the second hinge piece respectively, and the first through holes are symmetrically formed in the first hinge piece or the second hinge piece on two sides of a central shaft;
the third hinge piece and the fourth hinge piece are respectively provided with a pair of second through holes and a pair of third through holes; the second through holes and the third through holes are symmetrically arranged on two sides of the central shaft of the third hinge piece and the central shaft of the fourth hinge piece, and the second through holes and the third through holes are alternately arranged around the central shaft; when the locking piece is located first through-hole and second through-hole, realize the locking to other angles (being less than 180 degrees) under the ladder utensil open mode, when the locking piece is located first through-hole and third through-hole, realize the locking to 180 degrees under the ladder utensil open mode, the through-hole is not restricted to second through-hole and third through-hole, can set up a plurality ofly (not drawn in the figure), realizes the locking to the different angles of ladder utensil.
In a further technical scheme, the locking piece comprises a handle, a hinge shaft and a limiting column;
the hinge shaft and the limiting column are both arranged on the handle, and the hinge shaft is arranged along the central axis direction of the rotating disc and the positioning disc;
the limiting columns are provided with a pair and positioned on two sides of the hinge shaft, and in the opened state, the limiting columns are in aligned splicing with the first through hole and the second through hole simultaneously or in aligned splicing with the first through hole and the third through hole simultaneously; through a pair of spacing post, realized the effect of locking the ladder of different angles.
In a further technical scheme, a plurality of fixing holes for fixing are formed in the inner hinge piece and the outer hinge piece; the positioning holes are long-strip-shaped, so that the length direction of the ladder is basically consistent with the stress direction when the ladder is put on a wall, the stress of the inner hinge piece and the outer hinge piece is reduced, and the service life of the inner hinge piece and the service life of the outer hinge piece are prolonged.
The utility model discloses a theory of operation and advantage as follows: the utility model discloses when the operation, hinge piece and outer hinge piece in rotating under the word ladder overload state for the boss that is equipped with in the outer fringe of stopper and positioning disk of setting on the hinge piece outside coordinates of counterpointing, constitutes spacingly to the word ladder state.
When the ladder is opened to be in a straight ladder state, if the ladder is not overloaded, a gap is formed between the end face of the limiting block and the boss, and the ladder can be locked only by the locking piece;
when surpassing the locking ability of locking piece, the locking piece can break off and lose the locking function to the ladder, and the stopper on the outer hinge piece can support with the boss on the interior hinge piece and lean on together this moment, carries on spacingly to the ladder when the locking piece is cracked, prevents that the user from meeting accident, has improved the factor of safety of ladder.
Drawings
FIG. 1 is a schematic overall view of an embodiment of the present invention;
fig. 2 is a front view of the embodiment of the present invention in a folded state;
FIG. 3 is a front view of the herringbone state of the present invention;
FIG. 4 is a front view of the embodiment of the present invention in a linear state;
FIG. 5 is a perspective view of the herringbone structure of the present invention;
FIG. 6 is a perspective view showing a transitional state from a herringbone to a straight line in the embodiment of the present invention;
FIG. 7 is a perspective view of the embodiment of the present invention in a linear state;
fig. 8 is an exploded view of an embodiment of the present invention.
In the above drawings: 1. an inner hinge piece; 2. an outer hinge plate; 3. a locking member; 4. positioning a plate; 5. rotating the disc; 6. a boss; 7. a limiting block; 7a, the end face of the limiting block; 8, fixing holes; a third hinge plate; 12. a fourth hinge plate; 14. a second through hole; 15. a third through hole; 21. a first hinge piece; 22. a second hinge plate; 23. a first through hole; 31. a handle; a hinge shaft; 33. a limiting column.
Detailed description of the preferred embodiments
The invention will be further described with reference to the following drawings and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, are not intended to be limited to a particular order or sequence, nor are they intended to be used to limit the scope of the present disclosure, but only to distinguish components or operations described by the same terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct or indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or action with each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
The terms "front", "rear", "upper", "lower", "left" and "right" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the scope of protection and the actual direction of the present invention.
Referring to fig. 1 to 8, a hinge limiting structure of a ladder comprises an inner hinge plate 1, an outer hinge plate 2 and a locking piece 3;
the head part of the outer hinge plate 2 is a rotating disc 5, and a gap is formed in the thickness direction of the rotating disc 5; the head part of the inner hinge sheet 1 is provided with a positioning disc 4, and the positioning disc 4 is rotatably arranged in a gap of the rotating disc 5 and is hinged with the rotating disc 5;
the locking piece 3 is arranged corresponding to the central shafts of the rotating disc 5 and the positioning disc 4 and is used for locking at least the opening states of the rotating disc 5 and the positioning disc 4;
the ladder comprises a first limiting part and a second limiting part, wherein when the ladder is opened and is not overloaded, a gap is formed between the first limiting part and the second limiting part, when the ladder is overloaded, the first limiting part and the second limiting part are mutually abutted and matched, one of the two limiting parts is positioned on an inner hinge plate 1 of the hinge joint, and the other limiting part is positioned on an outer hinge plate 2 of the hinge joint;
the first limiting part is a boss 6, and the boss 6 is arranged on the outer edge of the positioning disc 4 and extends along the radial direction of the positioning disc 4;
the second limiting part is a limiting block 7, the limiting block 7 is arranged in the outer hinge piece 2, and the end face 7a of the limiting block 7 is arranged corresponding to the boss 6.
On the basis, the limiting block 7 is in a thick plate shape or a block shape; the stress strength is higher, and the safety of the operating personnel is improved.
On the basis, the range of the gap angle between the first limiting part and the second limiting part is (0, 1), the gap is large when the angle is too large, when the locking piece 3 loses the action, the boss 6 and the limiting block 7 of the limiting structure shake too much in the abutting process due to the too large gap, so that the operator can fall off directly, and accidents happen.
On the basis, as shown in fig. 8, the outer hinge plate 2 includes a first hinge plate 21 and a second hinge plate 22, the first hinge plate 21 and the second hinge plate 22 are parallel to each other and are arranged at intervals, and the heads of the first hinge plate and the second hinge plate form the rotating disc 5;
the inner hinge piece 1 comprises a third hinge piece 11 and a fourth hinge piece 12, the third hinge piece 11 and the fourth hinge piece 12 are fixedly arranged, and the heads of the third hinge piece 11 and the fourth hinge piece 12 form the positioning disc 4;
the limiting block 7 is positioned between the first hinge piece 21 and the second hinge piece 22; make stopper 7 fixed more firm, improve the atress ability, improve the factor of safety of ladder utensil.
On the basis, as shown in fig. 2 to 8, a pair of first through holes 23 are provided on the first hinge plate 21 and the second hinge plate 22, and the first through holes 23 are symmetrically provided on the first hinge plate 21 or on both sides of the central axis of the second hinge plate 22.
The third hinge plate 11 and the fourth hinge plate 12 are respectively provided with a pair of second through holes 14 and a pair of third through holes 15; the second through holes 14 and the third through holes 15 are symmetrically arranged on two sides of the central axis of the third hinge piece 11 and the central axis of the fourth hinge piece 12, and the second through holes 14 and the third through holes 15 are alternately arranged around the central axis; when the locking piece is located in the first through hole 23 and the second through hole 14, locking of other angles (less than 180 degrees) in the open state of the ladder is achieved, and when the locking piece is located in the first through hole 23 and the third through hole 15, locking of 180 degrees in the open state of the ladder is achieved.
On this basis, as shown in fig. 1 and 8, the locking member 3 includes a handle 31, a hinge shaft 32, and a stopper 33.
Articulated shaft 32 and spacing post 33 are all installed on handle 31, articulated shaft 32 is followed the center pin direction setting of rolling disc 5 and positioning disk 4.
The limiting columns 33 are provided with a pair and located on two sides of the hinge shaft 32, and in the opening state, the limiting columns 33 are simultaneously in butt joint with the first through holes 23 and the second through holes 14 or simultaneously in butt joint with the first through holes 23 and the third through holes 15.
On the basis, as shown in fig. 8, a plurality of fixing holes 8 for fixing are arranged on the inner hinge plate 1 and the outer hinge plate 2; the positioning holes 8 are long-strip-shaped, so that when the ladder is placed on a wall, the length direction is basically consistent with the stress direction, the stress of the inner hinge piece 1 and the stress of the outer hinge piece 2 are reduced, and the service life of the inner hinge piece 1 and the service life of the outer hinge piece 2 are prolonged.
The utility model discloses a theory of operation and advantage as follows:
the utility model discloses when the operation, rotate interior hinge piece 1 and outer hinge piece 2, be a word ladder overload state at the ladder utensil under for the boss 6 that sets up to be equipped with in the outer edge of stopper 7 on hinge piece 2 and positioning disk 4 counterpoints the cooperation, constitutes spacingly to a word ladder state.
When the ladder is opened to be in a straight ladder state, if the ladder is not overloaded, a gap is formed between the end surface of the limiting block 7 and the boss 6, and the ladder can be locked only by the locking piece 3;
if the ladder is overloaded, namely an operator ascends the height, the quality born by the ladder exceeds the locking capacity of the locking piece 3, the locking piece is damaged or broken to lose the locking function of the ladder, and at the moment, the end surface of the limiting block 7 is abutted and contacted with the boss 6 to limit the ladder; not only improved ladder and operator's factor of safety, can also make the operator can in time discover the problem that ladder exists, can in time maintain and change, be difficult for causing the accident.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (7)
1. The utility model provides a hinge limit structure of ladder utensil which characterized in that: comprises an inner hinge plate (1), an outer hinge plate (2) and a locking piece (3);
the head part of the outer hinge plate (2) is a rotating disc (5), and a gap is formed in the thickness direction of the rotating disc (5); the head of the inner hinge sheet (1) is provided with a positioning disc (4), and the positioning disc (4) is rotatably arranged in a gap of the rotating disc (5) and is hinged with the rotating disc (5);
the locking piece (3) is arranged corresponding to the central shafts of the rotating disc (5) and the positioning disc (4) and is used for locking at least the opening states of the rotating disc (5) and the positioning disc (4);
the ladder is characterized by further comprising a first limiting part and a second limiting part, wherein when the ladder is opened and is not overloaded, a gap is formed between the first limiting part and the second limiting part, when the ladder is overloaded, the first limiting part and the second limiting part are mutually abutted and matched, one of the two limiting parts is positioned on the inner hinge piece (1) of the hinge joint, and the other limiting part is positioned on the outer hinge piece (2) of the hinge joint;
the first limiting part is a boss (6), and the boss (6) is arranged on the outer edge of the positioning disc (4) and extends along the radial direction of the positioning disc (4);
the second limiting part is a limiting block (7), the limiting block (7) is arranged in the outer hinge piece (2), and the end face (7 a) of the limiting block (7) is arranged corresponding to the boss (6).
2. The hinge limiting structure of a ladder according to claim 1, wherein: the limiting block (7) is thick plate-shaped or block-shaped.
3. The hinge limiting structure of a ladder according to claim 1, wherein: the first stopper portion and the second stopper portion have a gap angle range between them of (0, 1).
4. The hinge limiting structure of a ladder according to claim 1, wherein: the outer hinge piece (2) comprises a first hinge piece (21) and a second hinge piece (22), the first hinge piece (21) and the second hinge piece (22) are parallel to each other and arranged at intervals, and the heads of the first hinge piece and the second hinge piece form the rotating disc (5);
the inner hinge piece (1) comprises a third hinge piece (11) and a fourth hinge piece (12), the third hinge piece (11) and the fourth hinge piece (12) are fixedly arranged, and the heads of the third hinge piece and the fourth hinge piece form the positioning disc (4);
the limiting block (7) is positioned between the first hinge piece (21) and the second hinge piece (22).
5. The hinge limiting structure of a ladder as claimed in claim 4, wherein: a pair of first through holes (23) are formed in the first hinge piece (21) and the second hinge piece (22), and the first through holes (23) are symmetrically formed in the first hinge piece (21) or two sides of a central shaft of the second hinge piece (22);
a pair of second through holes (14) and a pair of third through holes (15) are formed in the third hinge piece (11) and the fourth hinge piece (12); the second through holes (14) and the third through holes (15) are symmetrically arranged on two sides of the central shaft of the third hinge piece (11) and the central shaft of the fourth hinge piece (12), and the second through holes (14) and the third through holes (15) are alternately arranged around the central shaft.
6. The hinge limiting structure of a ladder as claimed in claim 5, wherein: the locking piece (3) comprises a handle (31), a hinge shaft (32) and a limiting column (33);
the hinge shaft (32) and the limiting column (33) are both arranged on the handle (31), and the hinge shaft (32) is arranged along the central shaft directions of the rotating disc (5) and the positioning disc (4);
the limiting columns (33) are provided with a pair of limiting columns and located on two sides of the hinge shaft (32), and in the opening state, the limiting columns (33) are connected with the first through holes (23) and the second through holes (14) in an aligned mode or connected with the first through holes (23) and the third through holes (15) in an aligned mode.
7. The hinge limiting structure of a ladder as claimed in claim 1, wherein: the inner hinge piece (1) and the outer hinge piece (2) are both provided with a plurality of fixing holes (8) for fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250188.8U CN218759691U (en) | 2022-08-24 | 2022-08-24 | Hinge limiting structure of ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250188.8U CN218759691U (en) | 2022-08-24 | 2022-08-24 | Hinge limiting structure of ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218759691U true CN218759691U (en) | 2023-03-28 |
Family
ID=85693166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222250188.8U Active CN218759691U (en) | 2022-08-24 | 2022-08-24 | Hinge limiting structure of ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218759691U (en) |
-
2022
- 2022-08-24 CN CN202222250188.8U patent/CN218759691U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218759691U (en) | Hinge limiting structure of ladder | |
| CN106515780B (en) | A kind of frame-type endergonic structure easy to maintain | |
| CN218493538U (en) | Hinge limiting structure | |
| CN210002832U (en) | Adjustable corner structure of encorbelmenting | |
| CN218493539U (en) | Limiting structure of hinge joint in ladder | |
| CN211547307U (en) | Novel become roof beam slab formula rubber support that falls is prevented in rigidity shock attenuation | |
| CN213086551U (en) | Bidirectional displacement damping support | |
| CN210317183U (en) | Sliding lug of follow-up frame of rotary drilling rig and follow-up frame of rotary drilling rig | |
| CN209958706U (en) | Folding scaffold frame of building engineering | |
| EP0773186B1 (en) | Improved trunnion for use with a pantograph jack | |
| CN107725977A (en) | A kind of adaptive jack adjusting base | |
| CN110920804B (en) | Helicopter deck safety net supporting structure | |
| CN201420797Y (en) | Pivot device | |
| CN212224958U (en) | One-way hinge structure | |
| CN210396461U (en) | Novel curtain wall opening sash anti-falling device | |
| JPH0631118Y2 (en) | Ladder and ladder | |
| CN215859624U (en) | Hinge device and door using same | |
| CN215803122U (en) | Attached scaffold anti-falling support | |
| CN219992220U (en) | Angle-adjustable disc-buckling type safety ladder cage wall attaching device | |
| CN216411998U (en) | Notebook computer pivot supports dustproof subassembly | |
| CN218541441U (en) | Elevator shaft operating platform | |
| CN217899406U (en) | Pin joint structure and display support frame thereof | |
| CN210480776U (en) | Fork utensil elevating gear and fork truck | |
| CN214828373U (en) | Crane hook fixing assembly | |
| CN218879184U (en) | Lifting hook with self-locking function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |