CN217028762U - Top cover structure of multifunctional ladder - Google Patents
Top cover structure of multifunctional ladder Download PDFInfo
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- CN217028762U CN217028762U CN202123384637.XU CN202123384637U CN217028762U CN 217028762 U CN217028762 U CN 217028762U CN 202123384637 U CN202123384637 U CN 202123384637U CN 217028762 U CN217028762 U CN 217028762U
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Abstract
A top cover structure of a multifunctional ladder comprises a shell, a hinge plate, a locking structure and an unlocking button; the upper surface and the lower surface of the shell are both provided with anti-skid surfaces; when the multifunctional ladder is in a herringbone ladder state, the outer hinge piece rotates to align the outer positioning hole with the first pair of inner positioning holes on the inner hinge piece; when the hinge is in the straight ladder state, the outer hinge piece rotates to the position where the outer positioning hole is aligned with the second pair of inner positioning holes on the inner hinge piece; the locking structure also comprises a spring, the spring acts between the handle and the hinge plate and keeps the positioning pin of the handle extending into the outer positioning hole and the inner positioning hole; according to the scheme, through the application of the locking structure, one key is used for unlocking, and the unlocking can be realized through one-time operation; the upper surface and the lower surface of the shell are provided with the anti-skidding surfaces, so that the upper surface and the lower surface can be trampled when the ladder is used as a straight ladder, the upper position and the lower position do not need to be adjusted, and the ladder is convenient and practical.
Description
Technical Field
The utility model relates to a climbing tool, in particular to a top cover structure of a multifunctional ladder.
Background
The ladder is a common tool for climbing, and two types of ladders, namely a straight ladder and a herringbone ladder, are commonly used in daily life. The ladder has the advantages that different types of ladders are required to be used in different occasions, so that people are required to carry the ladders of two types when going out for work, but the straight ladder and the herringbone ladder are large and heavy, and are inconvenient to carry.
In order to solve the problem, the industry invented a convertible ladder, which can be converted into a herringbone ladder or a straight ladder according to the use requirement, the convertible ladder changes the ladder state by rotating the angle of the ladder columns, namely, the top cover of the herringbone ladder is provided with an unlocking mechanism, and the ladder is locked and unlocked by buttons on two sides of the top cover. However, the above prior art finds the following disadvantages during long-term use:
firstly, the existing unlocking mechanism needs to be operated twice during unlocking, namely, two sides of the top cover are respectively unlocked, so that unlocking is inconvenient and operation is laborious.
Secondly, the top cap of this kind of ladder is equipped with the footboard that only supplies the one side climbing, when using as a word ladder, and the direction is restricted, when leading to actual operation, needs the upper and lower position of hard adjustment word ladder, and the convenience is not high.
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 to provide a top cover structure of a multifunctional ladder.
In order to achieve the purpose, the utility model adopts the technical scheme that: a roof structure of a multifunctional ladder, the roof structure comprises a shell, a hinge plate, a locking structure and an unlocking button;
the shell is connected between the left hinge plate and the right hinge plate, and the upper surface and the lower surface of the shell are both provided with anti-skidding surfaces;
the hinge plate comprises an outer hinge sheet and an inner hinge sheet which are in hinged fit; wherein, two sides of the outer hinge plate corresponding to the hinge point are symmetrically provided with a pair of outer positioning holes; at least two pairs of inner positioning holes are formed in the inner hinge plate corresponding to the arrangement positions of the outer positioning holes;
the multifunctional ladder comprises at least two working states, wherein the first working state is a herringbone ladder state, and the second working state is a straight ladder state;
when the multifunctional ladder is in a first working state, the outer hinge sheet rotates to align the outer positioning hole with the first pair of inner positioning holes on the inner hinge sheet; when the multifunctional ladder is in a second working state, the outer hinge plate rotates to align the outer positioning hole with a second inner positioning hole on the inner hinge plate;
a through hole is formed at the hinge point of the hinge plate, the locking structure comprises a handle, a rotating shaft is arranged on the handle and penetrates through the through hole, and the inner end of the rotating shaft extends into the shell; the handle is also provided with a pair of positioning pins corresponding to the outer positioning hole and the inner positioning hole of the hinge plate, and the positioning pins simultaneously extend into the outer positioning hole and the inner positioning hole in a locking state;
the locking structure also comprises a spring, and the spring acts between the handle and the hinge plate and keeps the positioning pin of the handle extending into the outer positioning hole and the inner positioning hole;
the unlocking mechanism is characterized by further comprising an unlocking button, the unlocking button is arranged on the shell and comprises a pressing portion and an acting portion, the pressing portion is exposed out of the shell, the acting portion extends into the shell, the acting portion corresponds to the inner end of the rotating shaft of the handle, and the acting portion acts on the inner end of the rotating shaft of the handle by pressing the unlocking button to drive the rotating shaft of the handle to overcome the acting force of the spring to displace outwards.
The relevant content in the above technical solution is explained as follows:
1. in the scheme, the upper surface and the lower surface of the shell are both provided with the anti-skid surfaces, and when the anti-skid device is used as a straight ladder, the anti-skid surfaces can be treaded in the vertical direction; when used as a herringbone ladder, the front side can be trampled.
2. In the above scheme, the shell is connected with the outer hinge plate.
3. In the above scheme, in the unlocking state, the positioning pin is separated from the outer positioning hole and the inner positioning hole.
4. In the above solution, the pressing portion is used for pressing operation by an operator.
5. In the above-mentioned scheme, the multi-functional ladder still includes the state of accomodating, and when being in this state, outer hinge piece rotates to outer locating hole and the second on the interior hinge piece is to locating hole counterpoint.
6. In the above scheme, the locking structures are provided with a pair, and the two locking structures are symmetrically arranged along two sides of the unlocking button.
7. In the above scheme, the locking structure further comprises a retainer ring and a clamp spring; the stop ring is sleeved on the rotating shaft and is fixed through the clamp spring; the spring is sleeved on the rotating shaft and is abutted and acted between the check ring and the hinge plate.
8. In the above scheme, the locking structure further comprises a push block, the outer end of the push block abuts against the inner end of the rotating shaft, the inner end of the push block is provided with a first inclined surface, and the action part of the unlocking button is a second inclined surface arranged on the side part of the unlocking button; when the unlocking button is pressed, the second inclined plane of the acting part acts on the first inclined plane of the push block to push the push block to move towards the position of the hinge plate, so that the handle is pushed to move outwards, and finally the positioning pin on the handle is separated from the outer positioning hole and the inner positioning hole.
9. In the above scheme, each locking structure comprises a push block, and the outer ends of the two push blocks respectively abut against the inner ends of the rotating shafts of the two outer sides of the handle; the inner end of each push block is provided with a first inclined plane, and the action part of the unlocking button is two second inclined planes symmetrically arranged at two sides of the unlocking button; when the unlocking button is pressed, the two second inclined planes of the acting part respectively act on the first inclined planes of the two push blocks, and meanwhile, the two push blocks are pushed to move towards the positions of the hinge plates corresponding to the two push blocks.
10. In the above scheme, the side of the unlocking button is further provided with a bump, and the bump enables the unlocking button to be limited in the shell.
11. In the above scheme, the upper surface of the housing further comprises a plurality of storage slots, and the storage slots can also be other structures capable of holding or positioning tools and articles, such as a hanging buckle slot, a hook and the like; when the multifunctional ladder is in a herringbone ladder state, an operator can place or position the operation tools in the article placing grooves.
The working principle of the utility model is as follows:
a top cover structure of a multifunctional ladder comprises a shell, a hinge plate, a locking structure and an unlocking button; the shell is connected between the left hinge plate and the right hinge plate, and the upper surface and the lower surface of the shell are both provided with anti-slip surfaces;
the hinge plate comprises an outer hinge piece and an inner hinge piece which are in hinged fit; wherein, two sides of the outer hinge plate corresponding to the hinge point are symmetrically provided with a pair of outer positioning holes; at least two pairs of inner positioning holes are formed in the inner hinge plate corresponding to the arrangement positions of the outer positioning holes;
the multifunctional ladder comprises at least two working states, wherein the first working state is a herringbone ladder state, and the second working state is a straight ladder state; when the multifunctional ladder is in a first working state, the outer hinge piece rotates to the position where the outer positioning hole is aligned with the first pair of inner positioning holes on the inner hinge piece; when the multifunctional ladder is in a second working state, the outer hinge plate rotates to the position where the outer positioning hole is aligned with the second inner positioning hole on the inner hinge plate;
a through hole is formed at the hinge point of the hinge plate, the locking structure comprises a handle, a rotating shaft is arranged on the handle, the rotating shaft penetrates through the through hole, and the inner end of the rotating shaft extends into the shell; the handle is also provided with a pair of positioning pins corresponding to the outer positioning hole and the inner positioning hole of the hinge plate, and the positioning pins simultaneously extend into the outer positioning hole and the inner positioning hole in a locking state;
the locking structure also comprises a spring, and the spring acts between the handle and the hinge plate and keeps the positioning pin of the handle extending into the outer positioning hole and the inner positioning hole;
the unlocking mechanism comprises a shell, and is characterized by further comprising an unlocking button, wherein the unlocking button is arranged on the shell, the unlocking button comprises a pressing part and an acting part, the pressing part is exposed out of the shell, the acting part extends into the shell, the acting part is arranged corresponding to the inner end of the rotating shaft of the handle, the acting part acts on the inner end of the rotating shaft of the handle through pressing the unlocking button, and the rotating shaft of the handle is driven to overcome the acting force of the spring and move outwards.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages and effects:
firstly, through the application of the locking structure, the unlocking can be realized by one key, the unlocking purpose can be achieved by one-time operation, and the labor is saved.
And secondly, the upper surface and the lower surface of the shell are both provided with anti-skid surfaces, so that the upper surface and the lower surface can be trampled when the ladder is used as a linear ladder, the upper position and the lower position of the linear ladder do not need to be readjusted, and the ladder is more convenient and practical.
Drawings
Fig. 1 is an exploded view of a roof structure of a multi-functional ladder according to an embodiment of the present invention;
FIG. 2 is an exploded view of a hinge plate in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a cover structure in a locked state in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a top cover structure in an unlocked state in an embodiment of the present invention;
fig. 5 is a schematic view of a top cover in an embodiment of the present invention.
In the drawings above: 1. a housing; 2. a hinge plate; 3. an anti-slip surface; 4. a through hole; 5. an outer hinge plate; 6. an inner hinge plate; 7. an outer positioning hole; 8. a first pair of inner positioning holes; 9. a second pair of inner positioning holes; 10. a support plate; 11. a locking structure; 12. a handle; 13. positioning pins; 14. a rotating shaft; 15. a spring; 16. a retainer ring; 17. a clamp spring; 18. pushing a block; 19. a first inclined plane; 20. an unlock button; 21. a pressing part; 22. a second inclined plane; 23. a bump; 24. a storage groove.
Detailed Description
The utility model is further described with reference to the following figures 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 physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on 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 application, and in the special art. 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 "upper", "lower", "left", "right", and the like used herein are directional terms, and are used herein only to describe the positional relationship between the structures, and are not intended to limit the protection schemes and the specific directions in practical implementation.
Referring to fig. 1 to 5, a top cover structure of a multi-functional ladder, the top cover structure including a housing 1, a hinge plate 2, a locking structure 11 and an unlocking button 20;
the shell 1 is connected between the left hinge plate 2 and the right hinge plate 2, and the upper surface and the lower surface of the shell 1 are both provided with anti-skidding surfaces 3; the upper surface of the housing 1 further comprises a plurality of storage slots 24.
The hinge plate 2 comprises an outer hinge piece 5 and an inner hinge piece 6 which are in hinge fit, the outer hinge piece 5 is provided with two pieces, a gap is formed between the two pieces, and the inner hinge piece 6 is inserted into the gap between the two outer hinge pieces 5 for combination; wherein, two sides of the outer hinge plate 5 corresponding to the hinge point are symmetrically provided with a pair of outer positioning holes 7; at least two pairs of inner positioning holes are formed in the inner hinge plate 6 corresponding to the outer positioning holes 7.
The multifunctional ladder comprises at least two working states, wherein the first working state is a herringbone ladder state, and the second working state is a straight ladder state; when the multifunctional ladder is in a first working state, the outer hinge piece 5 rotates to align the outer positioning hole with the first inner positioning hole 8 on the inner hinge piece 6; when the multifunctional ladder is in a second working state, the outer hinge plate 5 rotates to align the outer positioning hole 7 with the second alignment hole 9 on the inner hinge plate 6.
A through hole 4 is formed at the hinge point of the hinge plate 2, the locking structure 11 comprises a handle 12, a rotating shaft 14 is arranged on the handle 12, the rotating shaft 14 penetrates through the through hole 4, and the inner end of the rotating shaft 14 extends into the shell 1; the handle 12 is further provided with a pair of positioning pins 13 corresponding to the outer positioning hole 7 and the inner positioning hole of the hinge plate 2, and the positioning pins 13 simultaneously extend into the outer positioning hole 7 and the inner positioning hole in a locking state.
The locking structure 11 further comprises a spring 15, the spring 15 acts between the handle 12 and the hinge plate 2 and maintains the tendency of the detent pin 13 of the handle 12 to move into the outer detent hole 7 and the inner detent hole.
The locking structure 11 further comprises an unlocking button 20, a protruding block 23 is further arranged on the side of the unlocking button 20, the protruding block 23 enables the unlocking button 20 to be limited in the shell 1, the unlocking button 20 is arranged on the shell 1, the unlocking button 20 comprises a pressing portion 21 and an acting portion, the pressing portion 21 is exposed out of the shell 1, the acting portion extends into the shell 1 and corresponds to the inner end of the rotating shaft 14 of the handle 1, and the acting portion acts on the inner end of the rotating shaft 14 of the handle 12 by pressing the unlocking button 20 to drive the rotating shaft 14 of the handle 12 to move outwards against the action force of the spring 15.
The locking structure 11 further comprises a retainer ring 16 and a clamp spring 17; the retainer ring 16 is sleeved on the rotating shaft 14 and is fixed through the clamp spring 17; the spring 15 is sleeved on the rotating shaft 14 and acts between the retainer ring 16 and the hinge plate 2 in an abutting mode. The locking structure 11 further comprises a push block 18, the outer end of the push block 18 abuts against the inner end of the rotating shaft 14, the inner end of the push block 18 is provided with a first inclined surface 19, and the action part of the unlocking button 20 is a second inclined surface 22 arranged on the side part of the unlocking button 20; when the unlocking button 20 is pressed, the second inclined surface 22 of the acting part acts on the first inclined surface 19 of the push block 18 to push the push block 18 to move towards the position of the hinge plate 2.
A pair of locking structures 11 is arranged, and the two locking structures 11 are symmetrically arranged along two sides of the unlocking button 20; each locking structure 11 comprises a push block 18, and the outer ends of the two push blocks 18 respectively abut against the inner ends of the rotating shafts 14 of the two outer sides of the handle 12; the inner end of each push block 18 is provided with a first inclined plane 19, and the action part of the unlocking button 20 is two second inclined planes 22 symmetrically arranged at two sides of the unlocking button 20; when the unlocking button 20 is pressed, the two second inclined surfaces 22 of the acting part act on the first inclined surfaces 19 of the two push blocks 18 respectively, and simultaneously push the two push blocks 18 to move towards the positions of the hinge plates 2 corresponding to the two push blocks 18 respectively.
Based on the above structure, the specific operation principle of the present invention is described as follows:
when unlocking, the unlocking button 20 is pressed, the action part of the unlocking button 20 acts on the first inclined surface 19 of the push block 18, so that the push block 18 is displaced outwards, the rotating shaft 14 and the retainer ring 16 on the rotating shaft 14 are driven to be displaced outwards, the spring 15 is compressed at the moment, the handle 12 drives the positioning pin 13, the positioning pin 13 is separated from the outer positioning hole 7 and the inner positioning hole, the handle 12 is immediately rotated to enable the positioning pin 13 to deviate from the outer positioning hole 7 and the inner positioning hole, in this state, the locking structure 11 is unlocked, and the outer positioning hole 7 of the outer hinge piece 5 can be rotated to correspond to the inner positioning hole on the inner hinge piece 6 in a required ladder state.
Then, the handle 12 is rotated to make the positioning pin 13 correspond to the outer positioning hole 7 and the inner positioning hole, the handle 12 is loosened, the positioning pin 13 simultaneously extends into the outer positioning hole 7 and the inner positioning hole under the action of the spring 15, meanwhile, the rotating shaft 14 is displaced inwards and pushes the pushing block 18 to be displaced inwards, then the pushing block 18 pushes the unlocking button 20 to be displaced outwards, finally the unlocking button 20 is reset, at this moment, the locking structure is locked, the ladder state adjustment is finished, and the ladder can be used.
Through the design of the scheme, the multifunctional ladder can be converted at least between the shapes of the straight ladder and the herringbone ladder.
A support plate 10 is fixed on the inner side of the outer hinge plate 5, and the housing 1 is connected with the hinge plate 2 through the support plate 10.
The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. 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 top cap structure of multi-functional ladder which characterized in that: the top cover structure comprises a shell (1), a hinge plate (2), a locking structure (11) and an unlocking button (20);
the shell (1) is connected between the left hinge plate and the right hinge plate (2), and the upper surface and the lower surface of the shell (1) are both provided with anti-skidding surfaces (3);
the hinge plate (2) comprises an outer hinge sheet (5) and an inner hinge sheet (6) which are in hinged fit; wherein, a pair of outer positioning holes (7) are symmetrically arranged on the outer hinge sheet (5) corresponding to the two sides of the hinge point; the inner hinge sheet (6) is provided with at least two pairs of inner positioning holes corresponding to the arrangement positions of the outer positioning holes (7);
the multifunctional ladder comprises at least two working states, wherein the first working state is a herringbone ladder state, and the second working state is a straight ladder state;
when the multifunctional ladder is in a first working state, the outer hinge sheet (5) rotates to the position where the outer positioning hole is aligned with the first pair of inner positioning holes (8) in the inner hinge sheet (6); when the multifunctional ladder is in a second working state, the outer hinge piece (5) rotates to the position where the outer positioning hole (7) is aligned with the second inner positioning hole (9) in the inner hinge piece (6);
a through hole (4) is formed in the hinged point of the hinge plate (2), the locking structure (11) comprises a handle (12), a rotating shaft (14) is arranged on the handle (12), the rotating shaft (14) penetrates through the through hole (4), and the inner end of the rotating shaft (14) extends into the shell (1); a pair of positioning pins (13) are further arranged on the handle (12) corresponding to the outer positioning hole (7) and the inner positioning hole of the hinge plate (2), and in a locking state, the positioning pins (13) simultaneously extend into the outer positioning hole (7) and the inner positioning hole;
the locking structure (11) further comprises a spring (15), the spring (15) acts between the handle (12) and the hinge plate (2) and keeps the positioning pin (13) of the handle (12) in a movement trend of extending into the outer positioning hole (7) and the inner positioning hole;
the unlocking device is characterized by further comprising an unlocking button (20), the unlocking button (20) is arranged on the shell (1), the unlocking button (20) comprises a pressing portion (21) and an acting portion, the pressing portion (21) is exposed out of the shell (1), the acting portion extends into the shell (1), the acting portion corresponds to the inner end of the rotating shaft (14) of the handle (12), the acting portion acts on the inner end of the rotating shaft (14) of the handle (12) by pressing the unlocking button (20), and the rotating shaft (14) of the handle (12) is driven to move outwards against the action force of the spring (15).
2. The roof structure of the multi-functional ladder of claim 1, characterized in that: the locking structures (11) are provided with a pair, and the two locking structures (11) are symmetrically arranged along two sides of the unlocking button (20).
3. The roof structure of the multi-functional ladder of claim 1 or 2, characterized in that: the locking structure (11) further comprises a retainer ring (16) and a clamp spring (17);
the retainer ring (16) is sleeved on the rotating shaft (14) and is fixed through the clamp spring (17); the spring (15) is sleeved on the rotating shaft (14) and acts against the space between the retainer ring (16) and the hinge plate (2).
4. The roof structure of the multi-functional ladder of claim 1, characterized in that: the locking structure (11) further comprises a push block (18), the outer end of the push block (18) abuts against the inner end of the rotating shaft (14), a first inclined surface (19) is arranged at the inner end of the push block (18), and the action part of the unlocking button (20) is a second inclined surface (22) arranged at the side part of the unlocking button (20);
when the unlocking button (20) is pressed, the second inclined surface (22) of the acting part acts on the first inclined surface (19) of the push block (18) to push the push block (18) to move towards the position of the hinge plate (2).
5. The roof structure of the multi-functional ladder of claim 2, characterized in that: each locking structure (11) comprises a push block (18), and the outer ends of the two push blocks (18) are respectively abutted against the inner ends of the rotating shafts (14) of the two outer sides of the handle (12); the inner end of each push block (18) is provided with a first inclined plane (19), and the action part of the unlocking button (20) is two second inclined planes (22) symmetrically arranged at two sides of the unlocking button (20);
when the unlocking button (20) is pressed, the two second inclined surfaces (22) of the acting part act on the first inclined surfaces (19) of the two push blocks (18) respectively, and meanwhile, the two push blocks (18) are pushed to move towards the positions of the hinge plates (2) corresponding to the two push blocks respectively.
6. The roof structure of the multi-functional ladder of claim 1, characterized in that: the side edge of the unlocking button (20) is also provided with a convex block (23), and the convex block (23) enables the unlocking button (20) to be limited in the shell (1).
7. The roof structure of the multi-functional ladder of claim 1, characterized in that: the upper surface of the shell (1) also comprises a plurality of article placing grooves (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384637.XU CN217028762U (en) | 2021-12-29 | 2021-12-29 | Top cover structure of multifunctional ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384637.XU CN217028762U (en) | 2021-12-29 | 2021-12-29 | Top cover structure of multifunctional ladder |
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| Publication Number | Publication Date |
|---|---|
| CN217028762U true CN217028762U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123384637.XU Active CN217028762U (en) | 2021-12-29 | 2021-12-29 | Top cover structure of multifunctional ladder |
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| CN (1) | CN217028762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405219A (en) * | 2022-08-24 | 2022-11-29 | 苏州飞华铝制工业有限公司 | Combined ladder |
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2021
- 2021-12-29 CN CN202123384637.XU patent/CN217028762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405219A (en) * | 2022-08-24 | 2022-11-29 | 苏州飞华铝制工业有限公司 | Combined ladder |
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