CN107435518B - Articulated positioning mechanism convenient to unblock operation - Google Patents
Articulated positioning mechanism convenient to unblock operation Download PDFInfo
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- CN107435518B CN107435518B CN201710722745.2A CN201710722745A CN107435518B CN 107435518 B CN107435518 B CN 107435518B CN 201710722745 A CN201710722745 A CN 201710722745A CN 107435518 B CN107435518 B CN 107435518B
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- lock pin
- unlocking
- hinge assembly
- outer hinge
- handle
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
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- Mechanical Engineering (AREA)
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Abstract
A hinge positioning mechanism convenient for unlocking operation comprises an outer hinge assembly, an inner hinge assembly and an unlocking structure; the outer hinge assembly is formed by splicing two outer hinge plates with outer discs, the inner hinge assembly comprises an inner hinge plate, and the head of the inner hinge plate is provided with an inner disc; the two outer circular discs are clamped at two sides of the inner circular disc and are hinged through a central shaft; the unlocking structure comprises an unlocking handle, a lock pin and an elastic element; one end of the unlocking handle is rotatably arranged on the outer disc, the other end of the unlocking handle is an operation part, and a lock pin is positioned in the middle of the unlocking handle; when the unlocking handle rotates, the lock pin is driven to move away from or close to the central shaft; the outer edge of the inner disc is provided with a locking groove corresponding to the locking pin; the elastic element acts between the outer hinge component and the lock pin, and the lock pin is forced to be kept in the locking groove for positioning and locking by applying force to the lock pin; the lock pin is disengaged from the lock groove against the urging force of the elastic member by the rotation of the unlock handle. The invention has reasonable structural design and convenient and labor-saving unlocking.
Description
Technical Field
The invention relates to a hinged positioning mechanism, in particular to a universal hinged positioning mechanism which can be used in common tools such as a folding ladder, a herringbone ladder and the like and is convenient for unlocking operation.
Background
A herringbone ladder is generally formed by hingedly connecting a left half ladder and a right half ladder at the top. In practical use, people often utilize the change of the opening angle of the herringbone ladder to adapt to the work of different heights.
In order to improve the safety of the herringbone ladder in the use under the open state, a locking mechanism is usually designed at the hinged position of the top of the herringbone ladder, and after the opening angle is matched with the positioning angle, the two side ladder columns of the left half ladder and the two side ladder columns of the right half ladder are respectively fixed through one locking mechanism, so that the reliable opening angle positioning is provided. In addition to being applied to a herringbone ladder, the locking mechanism may also be used in the hinge of a stile, such as a folding ladder, with a collapsible grab bar. However, in the prior art, the existing hinge positioning mechanism has the problems of complex structure, inconvenient unlocking operation and the like.
Therefore, how to solve the above-mentioned drawbacks of the prior art is a subject to be studied and solved by the present invention.
Disclosure of Invention
The invention aims to provide a hinge positioning mechanism which is convenient for unlocking operation.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the hinge positioning mechanism comprises an outer hinge assembly, an inner hinge assembly and an unlocking structure which is assembled and acts between the outer hinge assembly and the inner hinge assembly;
the outer hinge assembly is formed by splicing two outer hinge plates with outer discs, and the two outer hinge plates are mutually parallel and oppositely arranged at intervals; the inner hinge assembly comprises at least one inner hinge piece, and the head part of the inner hinge piece is provided with an inner disc; the two outer discs are clamped on two sides of the inner disc and hinged through a central shaft;
the unlocking structure comprises an unlocking handle, a lock pin and an elastic element, wherein the lock pin is positioned on the unlocking handle; one end of the unlocking handle is rotatably arranged on the outer disc, and the rotating shaft of the unlocking handle is parallel to the central shaft; the other end of the unlocking handle is an operation part, the lock pin is positioned in the middle of the unlocking handle, and the axis of the lock pin is parallel to the central shaft; when the operating part of the unlocking handle rotates around the rotating shaft, the lock pin is driven to move away from or close to the central shaft;
the outer edge of the inner disc of the inner hinge assembly is provided with a locking groove corresponding to the locking pin of the unlocking structure; when the lock pin of the unlocking structure is positioned in the locking groove, the lock pin is in a locking state of the positioning mechanism; when the lock pin of the unlocking structure is separated from the locking groove, the lock pin is in an unlocking state of the positioning mechanism;
the elastic element acts between the outer hinge assembly and the lock pin, and the lock pin is forced to maintain the positioning in the locking groove by applying force to the lock pin, thereby maintaining the locking state; the lock pin overcomes the force applied by the elastic element to the lock pin through the rotation of the unlocking handle, and is separated from the locking groove to achieve unlocking.
The relevant content explanation in the technical scheme is as follows:
1. in the above scheme, when the invention is applied to the herringbone ladder, the outer hinge assembly inserting group is positioned in the ladder column of the left half ladder of the herringbone ladder, and the inner hinge assembly inserting group is positioned in the ladder column of the right half ladder of the herringbone ladder, so that the left half ladder and the right plate body are hinged and positioned through the invention;
when the invention is applied to a folding ladder, one of the outer hinge component and the inner hinge component is inserted and positioned in a ladder column of the folding ladder, and the other is inserted and positioned in a handrail rod of the folding ladder, so that the handrail rod and the ladder column are hinged and positioned through the invention.
2. In the scheme, when the lock is unlocked, the lock is automatically realized by the elasticity of the elastic element through manual operation. The elastic element is a torsion spring, and can also be a tension spring or other elastic elements with the same function.
3. In the scheme, the lock pin is driven to move away from or close to the central shaft, namely, the extension line of the displacement track of the lock pin is intersected with the central shaft, so that the lock pin is conveniently separated from the locking groove of the inner hinge assembly by utilizing the shortest path, and the unlocking is faster and more labor-saving.
4. In the above scheme, the first slot edge of the locking slot is arranged corresponding to the limit position of the outer hinge assembly and the inner hinge assembly after being opened, the limit position is the relative position of the outer hinge assembly and the inner hinge assembly in the locking state of the positioning mechanism, the length of the first slot edge of the locking slot is larger than that of the second slot edge of the locking slot, and when the outer hinge assembly and the inner hinge assembly are opened to the limit position, the first slot edge is propped against the rotating shaft of the unlocking handle; because the rotating shaft rotates the outer disc arranged on the outer hinge piece, and the locking groove is formed in the inner disc of the inner hinge piece, the limiting effect of limiting the limiting position of the outer hinge assembly and the limiting position of the inner hinge assembly when the outer hinge assembly and the inner hinge assembly are opened can be achieved through the abutting fit of the first groove edge and the rotating shaft.
An included angle is formed between the extension line of the second groove edge and the diameter of the inner disc, so that the second groove edge is arranged in an outward inclined mode; by the design, on one hand, during the opening process of the outer hinge assembly and the inner hinge assembly, the locking pin is facilitated to slide into the locking groove to realize positioning; on the other hand, in the locking state of the positioning mechanism, the fit clearance between the lock pin and the locking groove is reduced, so that the locking state is more stable.
And the distance from the first slot edge to the second slot edge is larger than the diameter of the lock pin. By the design, in the opening process of the outer hinge assembly and the inner hinge assembly, the condition that the lock pin cannot enter the locking groove due to the fact that the relative rotation speed of the outer hinge assembly and the inner hinge assembly is too high can be avoided.
5. In the above scheme, the lock pin on the outer hinge assembly corresponding to the unlocking structure is provided with the oblong hole, and the extension line of the central line of the oblong hole in the length direction intersects with the central shaft, so that the lock pin is convenient to separate from the locking groove of the inner hinge assembly by utilizing the shortest path, and the unlocking is faster and more labor-saving; the lock pin penetrates through the oblong hole, and when the operating part of the unlocking handle rotates, the lock pin displaces in the oblong hole along the length direction of the lock pin so as to realize linear displacement.
6. In the above scheme, the lock pin is positioned at the middle part of the unlocking handle through a long hole, and an extension line of the central line of the long hole in the length direction intersects with the rotating shaft; when the operating part of the unlocking handle rotates, the lock pin is in sliding fit with the oblong hole of the outer hinge assembly and is in sliding fit in the oblong hole, so that interference between the lock pin and two sides of the oblong hole is avoided.
Through the design of the long hole, the linear displacement of the lock pin is facilitated, the friction between the lock pin and the side part of the long hole is reduced, the unlocking process is smoother and labor-saving, and the service life of the unlocking structure is prolonged.
7. In the above scheme, the outer hinge assembly is provided with the locating hole corresponding to the rotating shaft of the unlocking structure, and the rotating shaft penetrates through the locating hole to achieve the rotation setting of the unlocking structure and the outer hinge assembly.
8. In the above scheme, the outer hinge assembly further comprises an inner partition plate, wherein the inner partition plate is arranged between the two outer hinge plates in a fitting mode and used for supporting the two outer hinge plates. By the design, the whole structural strength of the outer hinge assembly can be improved, and meanwhile, an assembly space is defined for the inner hinge plates to be assembled between the two outer hinge plates.
9. In the above scheme, the unlocking handles are provided with a pair of unlocking handles which are symmetrically arranged at two sides of the outer hinge assembly, and the two unlocking handles are respectively positioned at two ends of the same rotating shaft; two ends of the lock pin are respectively positioned on the two unlocking handles;
the elastic elements are provided with a pair of elastic elements, are in one-to-one correspondence with the unlocking handles, and are arranged between the outer hinge piece and the unlocking handles; the two elastic elements respectively act on the two ends of the lock pin, and simultaneously apply the same compression force to the two ends of the lock pin.
Through the design that two unblock handles and two elastic element all act on respectively at the lockpin both ends, can realize the balance of force at the both ends of lockpin, help improving the smoothness of unblock, still can make the unblock operation more laborsaving, convenient.
10. In the above scheme, the outer hinge assembly further comprises two first connecting plates respectively connected to the outer sides of the two outer hinge plates; the unlocking handle is attached to the outer side of the first connecting plate, the lock pin is simultaneously penetrated in the two first connecting plates and the two outer hinge plates, and the elastic element is positioned between the first connecting plates and the outer hinge plates;
the inner hinge assembly comprises two second connecting plates which are respectively connected to two sides of the inner hinge piece; and a semicircular notch is arranged on the second connecting plate corresponding to the outer disc of the outer hinge plate so as to allow the outer hinge assembly to rotate.
Through the design of the first connecting plate and the second connecting plate, the structural strength of the outer hinge assembly and the inner hinge assembly can be respectively improved, the use reliability of the invention can be improved, and the service life of the invention can be prolonged.
The working principle and the advantages of the invention are as follows:
the invention discloses a hinge positioning mechanism convenient for unlocking operation, which comprises an outer hinge assembly, an inner hinge assembly and an unlocking structure; the outer hinge assembly is formed by splicing two outer hinge plates with outer discs, the inner hinge assembly comprises an inner hinge plate, and the head of the inner hinge plate is provided with an inner disc; the two outer circular discs are clamped at two sides of the inner circular disc and are hinged through a central shaft; the unlocking structure comprises an unlocking handle, a lock pin and an elastic element; one end of the unlocking handle is rotatably arranged on the outer disc, the other end of the unlocking handle is an operation part, and a lock pin is positioned in the middle of the unlocking handle; when the unlocking handle rotates, the lock pin is driven to move away from or close to the central shaft; the outer edge of the inner disc is provided with a locking groove corresponding to the locking pin; when the lock pin is positioned in the locking groove, the lock pin is in a locking state of the positioning mechanism; when the lock pin is separated from the locking groove, the lock pin is in an unlocking state of the positioning mechanism; the elastic element acts between the outer hinge component and the lock pin, and the lock pin is forced to be kept in the locking groove for positioning and locking by applying force to the lock pin; the lock pin is disengaged from the lock groove against the urging force of the elastic member by the rotation of the unlock handle.
Compared with the prior art, the invention has reasonable structural design, and the unlocking is more convenient, labor-saving and quick.
Drawings
FIG. 1 is a view showing a reference of a use state of the embodiment of the present invention when applied to a folding ladder (a grab rail is opened);
FIG. 2 is a view of a second (grab bar closed) showing the use of the embodiment of the present invention in a folding ladder;
FIG. 3 is an exploded view of an embodiment of the present invention;
FIG. 4 is a schematic diagram of an unlocking process according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an unlocking process according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an unlocking process III according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an unlocking process according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an unlocking process according to an embodiment of the present invention;
FIG. 9 is a schematic view of an inner disc visible during an unlocking process according to an embodiment of the present invention;
FIG. 10 is a schematic view of the structure of the two inner discs during unlocking according to the embodiment of the present invention;
FIG. 11 is a schematic view of the structure of the three inner discs during unlocking according to the embodiment of the present invention;
FIG. 12 is a schematic view of the structure of the four inner discs during the unlocking process according to the embodiment of the present invention;
FIG. 13 is a schematic view of the structure of the five inner discs during the unlocking process according to the embodiment of the present invention;
fig. 14 is a schematic view showing the structure of a locking groove according to an embodiment of the present invention.
In the above figures: 1. a ladder column; 2. a grab rail; 3. an outer disc; 4. an outer hinge piece; 5. an inner hinge piece; 6. an inner disk; 7. a central shaft; 8. unlocking the handle; 9. a locking pin; 10. a torsion spring; 11. a rotating shaft; 12. an operation unit; 13. a locking groove; 14. a slotted hole; 15. positioning holes; 16. a long hole; 17. an inner partition; 18. a first connection plate; 19. a second connecting plate; 20. a semicircular notch; 21. a first slot edge; 22. and a second slot edge.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples:
examples: referring to fig. 1 to 13, a hinge positioning mechanism for facilitating an unlocking operation includes an outer hinge assembly, an inner hinge assembly, and an unlocking structure assembled and acting therebetween; one of the outer hinge assembly and the inner hinge assembly is positioned in the stile 1 of the folding ladder and the other is positioned in the grab rail 2 of the folding ladder.
The outer hinge assembly is formed by splicing two outer hinge plates 4 with outer discs 3, and the two outer hinge plates 4 are mutually parallel and oppositely arranged at intervals; the inner hinge assembly comprises at least one inner hinge piece 5, the head of which is provided with an inner disc 6; the two outer discs 3 are clamped on two sides of the inner disc 6 and hinged through a central shaft 7;
the unlocking structure comprises an unlocking handle 8, a lock pin 9 positioned on the unlocking handle 8 and a torsion spring 10; one end of the unlocking handle 8 is rotatably arranged on the outer disc 3, and the rotating shaft 11 of the unlocking handle is parallel to the central shaft 7; the other end of the unlocking handle 8 is an operation part 12, the lock pin 9 is positioned in the middle of the unlocking handle 8, and the axis of the lock pin 9 is parallel to the central shaft 7; when the operating portion 12 of the unlocking handle 8 rotates about the rotation shaft 11, the lock pin 9 is driven to displace away from or toward the center shaft 7, that is, an extension line of a displacement track of the lock pin 9 intersects the center shaft 7, so that the lock pin 9 is separated from the locking groove 13 of the inner hinge assembly by the shortest path, so that unlocking is faster and more labor-saving.
A long round hole 14 is formed in the outer hinge assembly corresponding to the lock pin 9 of the unlocking structure, and an extension line of the central line of the long round hole 14 in the length direction intersects with the central shaft 7, so that the lock pin 9 can be conveniently separated from the locking groove 13 of the inner hinge assembly by utilizing the shortest path, and the unlocking is faster and more labor-saving; the lock pin 9 is inserted into the oblong hole 14, and when the operating portion 12 of the unlocking handle 8 rotates, the lock pin 9 is displaced in the oblong hole 14 in the longitudinal direction thereof, so that linear displacement is achieved.
The outer hinge assembly is provided with a positioning hole 15 corresponding to the rotating shaft 11 of the unlocking structure, and the rotating shaft 11 is arranged in the positioning hole 15 in a penetrating mode, so that the unlocking structure and the outer hinge assembly are arranged in a rotating mode.
The outer edge of the inner disc 6 of the inner hinge assembly is provided with a locking groove 13 corresponding to the locking pin 9 of the unlocking structure; a locking state of the positioning mechanism when the lock pin 9 of the unlocking structure is positioned in the locking groove 13; when the lock pin 9 of the unlocking structure is separated from the locking groove 13, the unlocking state of the positioning mechanism is achieved;
as shown in fig. 14, the first slot edge 21 of the locking slot 13 is disposed corresponding to the limit position of the opened outer hinge assembly and inner hinge assembly, and the length of the first slot edge 21 of the locking slot 13 is greater than the length of the second slot edge 22 of the locking slot 13, when the outer hinge assembly and inner hinge assembly are opened to the limit position, the first slot edge 21 abuts against the rotating shaft 11 of the unlocking handle 8, and because the rotating shaft 11 is rotatably disposed on the outer disc 3 of the outer hinge plate 4, and the locking slot 13 is opened on the inner disc 6 of the inner hinge plate 5, the limit position effect of limiting the opening of the outer hinge assembly and the inner hinge assembly can be achieved through the abutting and matching of the first slot edge 21 and the rotating shaft 11.
The extension line of the second groove edge 22 and the diameter D of the inner disc 6 form an included angle alpha, and the included angle alpha is 1-10 degrees, so that the second groove edge 22 is arranged in an outward inclined mode; by this design, on the one hand, during the opening of the outer hinge assembly and the inner hinge assembly, the locking pin 9 is facilitated to slide into the locking groove 13 for positioning; on the other hand, in the locked state of the positioning mechanism, the fit clearance between the lock pin 9 and the locking groove 13 is reduced, and the locked state is stabilized.
And, the distance from the first slot edge 21 to the second slot edge 22 is larger than the diameter of the lock pin 9. By this design, during the opening process of the outer hinge assembly and the inner hinge assembly, the situation that the lock pin 9 cannot enter the locking groove 13 due to the fact that the relative rotation speed of the outer hinge assembly and the inner hinge assembly is too high can be avoided.
The middle part of the unlocking handle 8 is positioned with the lock pin 9 through a long hole 16, and the extension line of the central line of the long hole 16 in the length direction is intersected with the rotating shaft 11; when the operating part 12 of the unlocking handle 8 rotates, the lock pin 9 is slidingly matched with the oblong hole 14 of the outer hinge assembly and simultaneously slidingly matched in the oblong hole 16, so that interference between the lock pin 9 and two sides of the oblong hole 14 is avoided. Through the design of the long hole 16, the linear displacement of the lock pin 9 is facilitated, the friction between the lock pin 9 and the side part of the long hole 14 is reduced, the unlocking process is smoother and more labor-saving, and the service life of the unlocking structure is prolonged.
The torsion spring 10 acts between the outer hinge assembly and the locking pin 9, exerting a pressing force on the locking pin 9, forcing it to remain in position in the locking slot 13, thereby maintaining the locked state; the lock pin 9 is disengaged from the locking groove 13 by rotating the unlocking handle 8 against the pressing force of the torsion spring 10 to the lock pin 9, so as to achieve unlocking.
The unlocking handles 8 are provided with a pair of unlocking handles, the unlocking handles are symmetrically arranged on two sides of the outer hinge assembly, and the two unlocking handles 8 are respectively positioned on two ends of the same rotating shaft 11; two ends of the lock pin 9 are respectively positioned on the two unlocking handles 8; the torsion springs 10 are also provided with a pair, are in one-to-one correspondence with the unlocking handles 8, and are arranged between the outer hinge piece 4 and the unlocking handles 8; the two torsion springs 10 respectively act on the two ends of the lock pin 9, and simultaneously apply the same compression force on the two ends of the lock pin 9. Through the design that two unlocking handles 8 and two torsional springs 10 are respectively acted on two ends of the lock pin 9, force balance can be achieved at the two ends of the lock pin 9, smoothness during unlocking can be improved, and unlocking operation can be more labor-saving and convenient.
The outer hinge assembly further comprises an inner partition plate 17, and the inner partition plate 17 is arranged between the two outer hinge plates 4 in a fitting mode and used for supporting the two outer hinge plates 4. By the design, the whole structural strength of the outer hinge assembly can be improved, and meanwhile, an assembling space is defined for the inner hinge piece 5 to be assembled between the two outer hinge pieces 4.
The outer hinge assembly further comprises two first connecting plates 18 respectively connected to the outer sides of the two outer hinge plates 4; the unlocking handle 8 is attached to the outer side of the first connecting plate 18, the lock pin 9 is simultaneously penetrated through the two first connecting plates 18 and the two outer hinge plates 4, and the torsion spring 10 is positioned between the first connecting plate 18 and the outer hinge plates 4; the inner hinge assembly comprises two second connecting plates 19 which are respectively connected with two sides of the inner hinge piece 5; a semicircular notch 20 is arranged on the second connecting plate 19 corresponding to the outer disc 3 of the outer hinge piece 4 so as to allow the outer hinge assembly to rotate. By the design of the first connecting plate 18 and the second connecting plate 19, the structural strength of the outer hinge assembly and the inner hinge assembly can be respectively improved, so that the use reliability of the hinge assembly is improved, and the service life of the hinge assembly is prolonged.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (5)
1. The utility model provides a hinge positioning mechanism convenient to unblock operation which characterized in that:
the unlocking mechanism comprises an outer hinge assembly and an inner hinge assembly, and an unlocking structure assembled and acted between the outer hinge assembly and the inner hinge assembly;
the outer hinge assembly is formed by splicing two outer hinge plates with outer discs, and the two outer hinge plates are mutually parallel and oppositely arranged at intervals; the inner hinge assembly comprises at least one inner hinge piece, and the head part of the inner hinge piece is provided with an inner disc; the two outer discs are clamped on two sides of the inner disc and hinged through a central shaft;
the unlocking structure comprises an unlocking handle, a lock pin and an elastic element, wherein the lock pin is positioned on the unlocking handle; one end of the unlocking handle is rotatably arranged on the outer disc, and the rotating shaft of the unlocking handle is parallel to the central shaft; the other end of the unlocking handle is an operation part, the lock pin is positioned in the middle of the unlocking handle, and the axis of the lock pin is parallel to the central shaft; when the operating part of the unlocking handle rotates around the rotating shaft, the lock pin is driven to move away from or close to the central shaft;
the outer edge of the inner disc of the inner hinge assembly is provided with a locking groove corresponding to the locking pin of the unlocking structure; when the lock pin of the unlocking structure is positioned in the locking groove, the lock pin is in a locking state of the positioning mechanism; when the lock pin of the unlocking structure is separated from the locking groove, the lock pin is in an unlocking state of the positioning mechanism;
the elastic element acts between the outer hinge assembly and the lock pin, and the lock pin is forced to maintain the positioning in the locking groove by applying force to the lock pin, thereby maintaining the locking state; the lock pin overcomes the force applied by the elastic element to the lock pin through the rotation of the unlocking handle and is separated from the locking groove so as to achieve unlocking;
the first groove edge of the locking groove is arranged corresponding to the limit position of the outer hinge assembly and the limit position of the inner hinge assembly after being opened, the length of the first groove edge of the locking groove is larger than that of the second groove edge of the locking groove, and when the outer hinge assembly and the inner hinge assembly are opened to the limit position, the first groove edge is propped against the rotating shaft of the unlocking handle;
an included angle is formed between the extension line of the second groove edge and the diameter of the inner disc, so that the second groove edge is arranged in an outward inclined mode;
and the distance from the first slot edge to the second slot edge is larger than the diameter of the lock pin;
a long round hole is formed in the outer hinge assembly corresponding to the lock pin of the unlocking structure, and an extension line of the central line of the long round hole in the length direction intersects with the central shaft; the lock pin penetrates through the oblong hole, and when the operating part of the unlocking handle rotates, the lock pin moves in the oblong hole along the length direction of the lock pin;
the middle part of the unlocking handle is provided with a long hole for positioning the lock pin, and an extension line of the central line of the long hole in the length direction is intersected with the rotating shaft; when the operating part of the unlocking handle rotates, the lock pin is in sliding fit with the oblong hole of the outer hinge assembly and is in sliding fit in the oblong hole, so that interference between the lock pin and two sides of the oblong hole is avoided.
2. The positioning mechanism of claim 1, wherein: the outer hinge assembly is provided with a positioning hole corresponding to the rotating shaft of the unlocking structure, and the rotating shaft penetrates through the positioning hole to achieve the rotation setting of the unlocking structure and the outer hinge assembly.
3. The positioning mechanism of claim 1, wherein: the outer hinge assembly further comprises an inner partition plate, wherein the inner partition plate is arranged between the two outer hinge plates in a fitting mode and used for supporting the two outer hinge plates.
4. The positioning mechanism of claim 1, wherein: the unlocking handles are provided with a pair of unlocking handles which are symmetrically arranged on two sides of the outer hinge assembly, and the two unlocking handles are respectively positioned on two ends of the same rotating shaft; two ends of the lock pin are respectively positioned on the two unlocking handles;
the elastic elements are provided with a pair of elastic elements, are in one-to-one correspondence with the unlocking handles, and are arranged between the outer hinge piece and the unlocking handles; the two elastic elements respectively act on the two ends of the lock pin, and simultaneously apply the same compression force to the two ends of the lock pin.
5. The positioning mechanism of claim 1, wherein: the outer hinge assembly further comprises two first connecting plates which are respectively connected to the outer sides of the two outer hinge plates; the unlocking handle is attached to the outer side of the first connecting plate, the lock pin is simultaneously penetrated in the two first connecting plates and the two outer hinge plates, and the elastic element is positioned between the first connecting plates and the outer hinge plates;
the inner hinge assembly comprises two second connecting plates which are respectively connected to two sides of the inner hinge piece; and a semicircular notch is arranged on the second connecting plate corresponding to the outer disc of the outer hinge plate so as to allow the outer hinge assembly to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722745.2A CN107435518B (en) | 2017-08-22 | 2017-08-22 | Articulated positioning mechanism convenient to unblock operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710722745.2A CN107435518B (en) | 2017-08-22 | 2017-08-22 | Articulated positioning mechanism convenient to unblock operation |
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| CN107435518A CN107435518A (en) | 2017-12-05 |
| CN107435518B true CN107435518B (en) | 2023-06-13 |
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| CN109258063B (en) * | 2018-11-07 | 2024-03-22 | 苏州金莱克精密机械有限公司 | Push handle posture locking mechanism |
| CN109512310B (en) * | 2019-01-03 | 2024-02-27 | 台州市卫马智能科技有限公司 | Box type multifunctional toilet cover |
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| AU2005100485A4 (en) * | 2005-06-09 | 2005-08-04 | Dofair Company Ltd | Lock device in an articulated joint for a foldable ladder |
| AU2012101188A4 (en) * | 2011-08-05 | 2012-08-30 | Fung, Nathan | Securable trestle |
| CN104948101A (en) * | 2015-07-17 | 2015-09-30 | 北京隆达东方电器有限公司 | Positioning hinge mechanism for folding ladder |
| CN105863493A (en) * | 2016-05-24 | 2016-08-17 | 如皋市华阳铝制品有限公司 | Positioning and adjusting device of multifunctional ladder |
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| Publication number | Publication date |
|---|---|
| CN107435518A (en) | 2017-12-05 |
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