CN217028761U - Main and auxiliary ladder structure convenient to hinge and lock - Google Patents
Main and auxiliary ladder structure convenient to hinge and lock Download PDFInfo
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- CN217028761U CN217028761U CN202123384636.5U CN202123384636U CN217028761U CN 217028761 U CN217028761 U CN 217028761U CN 202123384636 U CN202123384636 U CN 202123384636U CN 217028761 U CN217028761 U CN 217028761U
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Abstract
The utility model provides a main vice ladder structure convenient to hinge locking, includes main ladder frame and vice ladder frame, and the top of two main ladder posts is counterpointed articulated cooperation one by one with the top of two vice ladder posts, is equipped with a locking mechanical system between two articulated mechanism. The single hinge mechanism comprises a static hinge sheet, a dynamic hinge sheet and a hinge shaft; the positioning disc is provided with a static through hole, and the rotating disc is provided with a plurality of moving through holes which are arranged at intervals. The locking mechanism comprises a cross beam, a guide groove is arranged on the cross beam, and two sliding blocks are connected in the guide groove in a sliding manner; two strip notches are formed in the guide groove. The locking mechanism also comprises two locking needles which are correspondingly positioned on the two sliding blocks one by one; a spring is connected between the opposite end surfaces of the two sliding blocks in an abutting mode. The locking mechanism further comprises two operation keys, the two operation keys are connected with the two sliding blocks, and the distance between the operation keys is smaller than the one-hand operation distance. The two operating keys drive the two sliding blocks to approach each other, and the heads of the two lock pins are separated from the pair of static through holes and the pair of dynamic through holes which are in alignment fit, so that the working position is unlocked.
Description
Technical Field
The utility model relates to the field of ladders, in particular to a main ladder structure and an auxiliary ladder structure which are convenient to hinge and lock.
Background
The ladder is a common tool for climbing in daily work and life, and has a wide application range. Generally, depending on the type of ladder, it can be classified into a straight ladder, a herringbone ladder, a telescopic ladder, a bar ladder, a triangular ladder, an elevator, and the like.
At present, appear a multi-functional ladder in the market, both can be the double ladder, can be the vertical ladder again, like current patent CN201486457U, disclose a multi-functional ladder, including main ladder, vice ladder and from the ladder, when the word ladder uses, the vice ladder upwards slides and supports through supporting buckle structure and fix on the main ladder, when the double ladder used, regard main ladder and vice ladder as the both sides of double ladder, fixed with the bracing piece after pulling open.
When the multifunctional ladder is in a herringbone ladder, a straight ladder and in a furled state, the locking structure is required to be adopted to lock the state, but when the existing locking structure is unlocked, two hands are required to unlock, and the two hands are used for unlocking, so that the angle between the main ladder and the auxiliary ladder is inconvenient to adjust. In order to ensure the stability of the ladder, when the multifunctional ladder is unlocked to change the state, at least two persons are required to be matched, one person unlocks, the expansion angle between the main ladder and the auxiliary ladder is adjusted by one person, the operation steps are more complicated, and the unlocking operation efficiency is low.
In view of this, the utility model provides a main ladder hinge locking structure and an auxiliary ladder hinge locking structure, which are simple and efficient to operate and can be unlocked and locked by one hand of a person, and aims to design the main ladder hinge locking structure and the auxiliary ladder hinge locking structure.
Disclosure of Invention
The utility model aims to provide a main and auxiliary ladder structure convenient for hinge locking.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a main ladder frame and an auxiliary ladder frame are convenient to hinge and lock, the structure comprises a main ladder frame and an auxiliary ladder frame, the main ladder frame comprises two main ladder posts, and the auxiliary ladder frame comprises two auxiliary ladder posts; the tops of the two main ladder columns and the tops of the two auxiliary ladder columns are in one-to-one alignment hinge fit to form two opposite hinge mechanisms, so that the auxiliary ladder frame is in rotating fit with the main ladder frame to form a plurality of working positions; and a locking mechanism is arranged between the two hinge mechanisms and is used for locking each working position.
Each hinge mechanism comprises a static hinge piece, a movable hinge piece and a hinge shaft, the static hinge piece is connected with one of the main ladder columns, and the movable hinge piece is connected with the corresponding auxiliary ladder column; the head of the static hinge piece is provided with a positioning disc, and the head of the movable hinge piece is provided with a rotating disc; the rotating disc is matched with the positioning disc in an alignment mode, and the hinge shaft is arranged along the central shaft direction of the rotating disc; the positioning disc is provided with a static through hole, the rotating disc is correspondingly provided with a plurality of moving through holes which are arranged at intervals, and the moving through holes are aligned and matched with the static through holes through the rotation of the moving hinge plate, so that a plurality of working positions are formed.
The locking mechanism comprises a cross beam, and two ends of the cross beam are correspondingly connected with the two hinge mechanisms; the beam is provided with a guide groove which is arranged along the length direction of the beam; the two sliding blocks are connected in the guide groove in a sliding manner and are oppositely arranged in the length direction of the guide groove; two strip notches are formed in the sliding block corresponding to the two guide grooves, and the length directions of the strip notches are consistent with that of the guide grooves.
The locking mechanism further comprises two locking pins which are correspondingly positioned on the two sliding blocks one by one; the two locking needles are oppositely arranged at intervals along the length direction of the guide groove, and the heads of the two locking needles are in alignment fit with the static through holes on the corresponding sides; a spring is connected between the opposite end faces of the two sliding blocks in an abutting mode, and the tail of each locking needle penetrates through the corresponding sliding block and extends into the corresponding side port of the spring; the crossbeam is correspondingly provided with a spring guide seat, and the spring penetrates through the spring guide seat.
The spring forces the two sliding blocks to keep a movement trend of being away from each other, so that the heads of the two locking pins are inserted into the corresponding pair of static through holes and dynamic through holes which are aligned and matched, and the working position is locked.
The locking mechanism further comprises two operation keys, the two operation keys are connected with the two sliding blocks in a one-to-one correspondence mode, and the distance between the two operation keys is smaller than the one-hand operation distance.
The corresponding operating keys and the sliding blocks are relatively fixed through a connecting piece, and each connecting piece is arranged in the corresponding long-strip notch and moves back and forth along the length direction of the corresponding long-strip notch.
The two operating keys drive the two sliding blocks to approach each other, so that the two locking pins overcome the elastic force of the spring to approach each other, and the heads of the two locking pins are separated from the pair of static through holes and the pair of dynamic through holes which are in alignment fit, so that the working position is unlocked.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the working process of the technical scheme is as follows: when the unfolding angle of the auxiliary ladder frame relative to the main ladder frame needs to be adjusted, one person can respectively act on the two operating keys by two fingers of one hand, the two operating keys are kneaded towards the middle, the two locking pins overcome the elasticity of the spring to be close to each other, and the heads of the two locking pins are respectively separated from the pair of static through holes and the pair of dynamic through holes which are matched in an alignment mode, so that the working position is unlocked. Then the hand of the person keeps kneading the two operation keys, the other hand acts on the auxiliary ladder post, the auxiliary ladder post is rotated to drive the movable hinge piece to rotate, and when the required working position is reached, the movable through hole on the movable hinge piece is in counterpoint fit with the static through hole on the static hinge piece. The single hand acting on the two operation keys is loosened, the two sliding blocks are forced to be relatively far away by the elastic force of the spring, and the heads of the two lock pins are inserted into the corresponding pair of static through holes and dynamic through holes which are in counterpoint fit, so that the working position is locked.
2. In the above scheme, the distance between the two operation keys is smaller than a single-hand operation distance. The meaning of the 'one-hand operation distance' is as follows: the distance between the thumb and the middle finger of an adult, or the distance between the thumb and the index finger, or other distances capable of being operated by one hand, varies from person to person, and is determined by the physiological characteristics of the hand of the operator.
3. In the scheme, the rotating disc is provided with three moving through holes which respectively correspond to the furling position of the auxiliary ladder column relative to the main ladder frame, the herringbone ladder position and the straight ladder position.
4. In the above scheme, the number of the static hinge pieces is two, the two static hinge pieces are parallel to each other and arranged at intervals, and the movable hinge piece is positioned between the two static hinge pieces.
5. In the above scheme, each of the hinge mechanisms further includes a partition plate, and the partition plate is attached to and disposed between the corresponding static hinge plate and the corresponding dynamic hinge plate and used for supporting the two hinge plates.
6. In the above scheme, the number of the movable hinge pieces is multiple, and the plurality of movable hinge pieces are parallel to each other and are jointed in a fitting manner.
7. In the above scheme, the beam has a cylindrical housing, and an assembly cavity with openings at two ends is formed in the beam.
8. In the above scheme, the two sliding blocks are provided with cylindrical main bodies, axial first channels are formed in the cylindrical main bodies of the two sliding blocks, and the lock pins are positioned in the corresponding first channels in a penetrating manner.
9. In the above scheme, the spring guide seat has a cylindrical main body, an axial second channel is formed in the cylindrical main body of the spring guide seat, and the spring is arranged in the second channel in a penetrating mode.
10. In the above scheme, the two connecting pieces are bolts, each bolt penetrates through the corresponding long-strip notch, one end of each bolt is connected with the corresponding operating key, and the other end of each bolt penetrates through the corresponding long-strip notch and is connected with the corresponding sliding block. The connecting piece can also be a screw, a pin or a shaft pin and the like.
11. In the scheme, the two operating keys are provided with the toggle handles, and the action surfaces of the toggle handles, which are used for manual application, are provided with thread grooves.
The working principle of the utility model is as follows: when the unfolding angle of the auxiliary ladder frame relative to the main ladder frame needs to be adjusted, one person can respectively act on the two operating keys by two fingers of one hand, the two operating keys are kneaded towards the middle, the two locking pins overcome the elasticity of the spring to be close to each other, and the heads of the two locking pins are respectively separated from the pair of static through holes and the pair of dynamic through holes which are matched in an alignment mode, so that the working position is unlocked. Then the hand of the person keeps kneading the two operation keys, the other hand acts on the auxiliary ladder post, the auxiliary ladder post is rotated to drive the movable hinge piece to rotate, and when the required working position is reached, the movable through hole on the movable hinge piece is in counterpoint fit with the static through hole on the static hinge piece. The single hand acting on the two operation keys is loosened, the two sliding blocks are forced to be relatively far away by the elastic force of the spring, and the heads of the two lock pins are inserted into the corresponding pair of static through holes and dynamic through holes which are in counterpoint fit, so that the working position is locked.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the expansion angle of the whole auxiliary ladder frame relative to the main ladder frame is adjusted, the process of different working positions is reached, one-man operation can be achieved, the distance between the two operation keys is smaller than the one-hand operation distance, one-man one-hand unlocking and locking of the two relative hinge mechanisms can be achieved, and therefore each working position is locked, and operation is efficient and convenient.
In addition, the locking mechanism of the technical scheme is positioned between the two opposite hinging mechanisms, can realize bidirectional locking, has a stable structure, and has higher locking strength, good reliability and high stability compared with the traditional single-side locking.
Drawings
FIG. 1 is a schematic structural view of a ladder employing a primary and secondary ladder structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a hinge mechanism and a locking mechanism of a main ladder structure and an auxiliary ladder structure according to an embodiment of the utility model;
FIG. 3 is an exploded view of the primary and secondary ladder structure locking mechanism in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the internal structure of the locking mechanism of the main and auxiliary ladder structures according to the embodiment of the present invention;
FIG. 5 is an exploded view of a single hinge mechanism of the primary and secondary ladder structures of an embodiment of the present invention;
FIG. 6 is a perspective view of a cross beam of the main ladder structure and the auxiliary ladder structure according to the embodiment of the present invention;
FIG. 7 is a side view of a cross member of a main and auxiliary ladder structure according to an embodiment of the present invention;
FIG. 8 is a sectional view of the main and auxiliary ladder structure in a locked state according to the embodiment of the present invention;
FIG. 9 is a schematic structural view of a folded position of the main ladder structure and the auxiliary ladder structure according to the embodiment of the utility model;
FIG. 10 is a schematic structural view of the positions of the herringbone ladders of the main and auxiliary ladder structures in accordance with the embodiment of the present invention;
FIG. 11 is a schematic structural view of a straight ladder position of the main ladder structure and the auxiliary ladder structure according to the embodiment of the present invention;
in the drawings above: 1. a main ladder frame; 101. a main ladder post; 2. an auxiliary ladder frame; 201. an auxiliary ladder post; 3. a stationary hinge plate; 301. positioning a plate; 302. a static through hole; 4. a movable hinge plate; 401. rotating the disc; 402. a movable through hole; 5. hinging a shaft; 6. a cross beam; 601. a guide groove; 602. a slider; 603. a strip slot; 604. a spring guide seat; 7. locking the needle; 8. a spring; 9. an operation key; 10. a connecting member; 11. a separator.
Detailed Description
The utility model is further described with reference to the following figures and examples:
example (b): main and auxiliary ladder structure convenient to hinge and lock
Referring to fig. 1, the structure comprises a main ladder frame 1 and an auxiliary ladder frame 2, wherein the main ladder frame 1 comprises two main ladder posts 101, and the auxiliary ladder frame 2 comprises two auxiliary ladder posts 201; the tops of the two main ladder posts 101 and the tops of the two auxiliary ladder posts 201 are in one-to-one alignment hinge fit to form two opposite hinge mechanisms, so that the auxiliary ladder frame 2 is in rotating fit with the main ladder frame 1 to form a plurality of working positions; a locking mechanism is arranged between the two hinge mechanisms and used for locking each working position;
referring to fig. 5, a single hinge mechanism includes a static hinge plate 3, a dynamic hinge plate 4 and a hinge shaft 5, the static hinge plate 3 is connected with one of the main ladder posts 101, and the dynamic hinge plate 4 is connected with the corresponding auxiliary ladder post 201; the head of the static hinge piece 3 is provided with a positioning disc 301, and the head of the movable hinge piece 4 is provided with a rotating disc 401; the rotating disc 401 is matched with the positioning disc 301 in an alignment manner, and the hinge shaft 5 is arranged along the central axis direction of the rotating disc 401; a static through hole 302 is formed in the positioning disc 301, a plurality of movable through holes 402 which are arranged at intervals are correspondingly formed in the rotating disc 401, and each movable through hole 402 is in alignment fit with the static through hole 302 through the rotation of the movable hinge plate 4, so that a plurality of working positions are formed; referring to fig. 9-11, the working positions include a stowed position, a herring ladder position, and a single ladder position. Three moving through holes 402 are formed in the rotating disc 401 and respectively correspond to the folding position, the herringbone ladder position and the straight ladder position of the auxiliary ladder posts 201 relative to the main ladder frame 1. The number of the static hinge pieces 3 is two, the static hinge pieces 3 are parallel to each other and arranged at intervals, and the movable hinge pieces 4 are located between the static hinge pieces 3. Each hinge mechanism further comprises a partition plate 11, and the partition plates 11 are attached to and arranged between the corresponding static hinge pieces 3 and the corresponding dynamic hinge pieces 4 and used for supporting the two hinge pieces. The number of the movable hinge pieces 4 is multiple, and the movable hinge pieces 4 are parallel to each other and are jointed and spliced.
Referring to fig. 6 to 7, the locking mechanism includes a cross beam 6, and two ends of the cross beam 6 are correspondingly connected to the two hinge mechanisms; referring to fig. 2 to 3, a guide groove 601 is formed on the cross beam 6, and the guide groove 601 is arranged along the length direction of the cross beam 6; two sliding blocks 602 are connected in the guide groove 601 in a sliding manner, and the two sliding blocks 602 are arranged oppositely in the length direction of the guide groove 601; two long-strip notches 603 are formed in the guide groove 601 corresponding to the two sliding blocks 602, and the length directions of the two long-strip notches 603 are consistent with the length direction of the guide groove 601; the cross beam 6 has a cylindrical housing, the interior of which forms an assembly chamber which is open at both ends.
Referring to fig. 2 to 4, the locking mechanism further includes two locking pins 7, and the two locking pins 7 are located on the two sliding blocks 602 in a one-to-one correspondence manner; the two locking pins 7 are oppositely arranged at intervals along the length direction of the guide groove 601, and the heads of the two locking pins 7 are in alignment fit with the static through holes 302 on the corresponding sides; a spring 8 is connected between the opposite end faces of the two sliding blocks 602 in an abutting manner, and the tail of each locking pin 7 penetrates through the corresponding sliding block 602 and extends into the corresponding side port of the spring 8; a spring guide seat 604 is correspondingly arranged on the cross beam 6, and the spring 8 is arranged in the spring guide seat 604 in a penetrating way; the two sliding blocks 602 are provided with cylindrical main bodies, axial first channels are formed in the cylindrical main bodies of the two sliding blocks 602, and the locking pins 7 are arranged in the corresponding first channels in a penetrating mode. The spring guide seat 604 has a cylindrical main body, an axial second channel is formed in the cylindrical main body of the spring guide seat 604, and the spring 8 is arranged in the second channel in a penetrating manner.
Referring to fig. 8, the spring 8 forces the two sliding blocks 602 to keep a moving trend away from each other, so that the heads of the two locking pins 7 are inserted into the corresponding pair of static through holes 302 and dynamic through holes 402 which are aligned and matched, thereby locking the working position;
the locking mechanism further comprises two operation keys 9, the two operation keys 9 are connected with the two sliding blocks 602 in a one-to-one correspondence manner, and the distance between the two operation keys 9 is smaller than a single-hand operation distance;
the corresponding operation key 9 and the sliding block 602 are relatively fixed through a connecting piece 10, and each connecting piece 10 is in the corresponding long-strip notch 603 and reciprocates along the length direction of the corresponding long-strip notch 603; the two connecting pieces 10 are bolts, each bolt passes through the corresponding long-strip notch 603, one end of each bolt is connected with the corresponding operating key 9, and the other end of each bolt passes through the corresponding long-strip notch 603 and is connected with the corresponding sliding block 602. : the two operation keys 9 are provided with toggle handles, and the action surfaces of the toggle handles, which are used for manual application, are provided with thread grooves.
The two operation keys 9 drive the two sliding blocks 602 to approach each other, so that the two lock pins 7 approach each other against the elastic force of the spring 8, and the heads of the two lock pins 7 are disengaged from the pair of static through holes 302 and the dynamic through holes 402 which are aligned and matched, thereby unlocking the working position.
The working process of the embodiment is as follows: when the unfolding angle of the auxiliary ladder frame relative to the main ladder frame needs to be adjusted, one person can respectively act on the two operating keys 9 by two fingers of one hand to pinch the operating keys towards the middle, the two locking pins 7 overcome the elastic force of the spring 8 to approach each other, the heads of the two locking pins 7 are pulled out from the pair of static through holes 302 and the pair of dynamic through holes 402 which are in alignment fit, and therefore the working position is unlocked. Then, the hand of the person keeps on kneading the two operating keys 9, the other hand acts on the auxiliary ladder post 201, the auxiliary ladder post 201 is rotated to drive the movable hinge piece 4 to rotate, and when the required working position is reached, the movable through hole 402 on the movable hinge piece 4 is in alignment fit with the static through hole 302 on the static hinge piece 3. When the single hand acting on the two operating keys 9 is released, the two sliding blocks 602 are forced to relatively move away by the elastic force of the spring 8, and the heads of the two lock pins 7 are inserted into the corresponding pair of static through holes 302 and dynamic through holes 402 which are aligned and matched, so that the working position is locked.
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 within the protection scope of the present invention.
Claims (10)
1. The utility model provides a major-minor ladder structure convenient to articulated locking which characterized in that: the structure comprises a main ladder frame (1) and an auxiliary ladder frame (2), wherein the main ladder frame (1) comprises two main ladder posts (101), and the auxiliary ladder frame (2) comprises two auxiliary ladder posts (201); the tops of the two main ladder posts (101) and the tops of the two auxiliary ladder posts (201) are in one-to-one alignment hinge fit to form two opposite hinge mechanisms, so that the auxiliary ladder frame (2) is in rotating fit with the main ladder frame (1) to form a plurality of working positions; a locking mechanism is arranged between the two hinge mechanisms and used for locking each working position;
each hinge mechanism comprises a static hinge plate (3), a movable hinge plate (4) and a hinge shaft (5), the static hinge plate (3) is connected with one of the main ladder posts (101), and the movable hinge plate (4) is connected with the corresponding auxiliary ladder post (201); the head of the static hinge piece (3) is provided with a positioning disc (301), and the head of the movable hinge piece (4) is provided with a rotating disc (401); the rotating disc (401) is matched with the positioning disc (301) in an alignment mode, and the hinge shaft (5) is arranged along the central axis direction of the rotating disc (401); a static through hole (302) is formed in the positioning disc (301), a plurality of movable through holes (402) which are arranged at intervals are correspondingly formed in the rotating disc (401), and each movable through hole (402) is aligned and matched with the static through hole (302) through the rotation of the movable hinge plate (4), so that a plurality of working positions are formed;
the locking mechanism comprises a cross beam (6), and two ends of the cross beam (6) are correspondingly connected with the two hinge mechanisms; the cross beam (6) is provided with a guide groove (601), and the guide groove (601) is arranged along the length direction of the cross beam (6); two sliding blocks (602) are connected in the guide groove (601) in a sliding manner, and the two sliding blocks (602) are oppositely arranged in the length direction of the guide groove (601); two long-strip notches (603) are formed in the guide groove (601) corresponding to the two sliding blocks (602), and the length directions of the two long-strip notches (603) are consistent with the length direction of the guide groove (601);
the locking mechanism further comprises two locking needles (7), and the two locking needles (7) are correspondingly positioned on the two sliding blocks (602) one by one; the two locking needles (7) are oppositely arranged at intervals along the length direction of the guide groove (601), and the heads of the two locking needles (7) are in contraposition fit with the static through holes (302) on the corresponding sides; a spring (8) is connected between the opposite end faces of the two sliding blocks (602) in a butting manner, and the tail part of each locking needle (7) penetrates through the corresponding sliding block (602) and extends into the corresponding side port of the spring (8); a spring guide seat (604) is correspondingly arranged on the cross beam (6), and the spring (8) is arranged in the spring guide seat (604) in a penetrating way;
the spring (8) forces the two sliding blocks (602) to keep a movement trend of separating away from each other, and the heads of the two locking pins (7) are inserted into the corresponding pair of static through holes (302) and dynamic through holes (402) which are aligned and matched, so that the working position is locked;
the locking mechanism further comprises two operating keys (9), the two operating keys (9) are connected with the two sliding blocks (602) in a one-to-one correspondence manner, and the distance between the two operating keys (9) is smaller than a single-hand operating distance;
the corresponding operating key (9) and the sliding block (602) are relatively fixed through a connecting piece (10), and each connecting piece (10) is arranged in the corresponding long-strip notch (603) and moves back and forth along the length direction of the corresponding long-strip notch (603);
the two operating keys (9) drive the two sliding blocks (602) to approach each other, so that the two locking pins (7) are formed to approach each other against the elastic force of the spring (8), and the heads of the two locking pins (7) are separated from the pair of static through holes (302) and the movable through holes (402) which are in alignment fit, so that the working position is unlocked.
2. A primary and secondary ladder structure facilitating articulation locking as claimed in claim 1, wherein: the rotating disc (401) is provided with three moving through holes (402) which respectively correspond to the furling position, the herringbone ladder position and the straight ladder position of the auxiliary ladder column (201) relative to the main ladder frame (1).
3. A primary and secondary ladder structure facilitating articulation locking as claimed in claim 1, wherein: the number of the static hinge pieces (3) is two, the static hinge pieces (3) are parallel to each other and arranged at intervals, and the movable hinge pieces (4) are located between the static hinge pieces (3).
4. A primary and secondary ladder structure facilitating hinge locking as claimed in claim 1, wherein: each hinge mechanism further comprises a partition plate (11), and the partition plates (11) are attached to and arranged between the corresponding static hinge pieces (3) and the corresponding dynamic hinge pieces (4) and used for supporting the two hinge pieces.
5. A primary and secondary ladder structure facilitating hinge locking as claimed in claim 1, wherein: the number of the movable hinge pieces (4) is multiple, and the movable hinge pieces (4) are parallel to each other and are jointed.
6. A primary and secondary ladder structure facilitating articulation locking as claimed in claim 1, wherein: the cross beam (6) is provided with a cylindrical shell, and an assembly cavity with two open ends is formed inside the cylindrical shell.
7. A primary and secondary ladder structure facilitating articulation locking as claimed in claim 1, wherein: the two sliding blocks (602) are provided with cylindrical main bodies, axial first channels are formed in the cylindrical main bodies of the two sliding blocks (602), and the locking pins (7) are positioned in the corresponding first channels in a penetrating mode.
8. A primary and secondary ladder structure facilitating hinge locking as claimed in claim 1, wherein: the spring guide seat (604) is provided with a cylindrical main body, an axial second channel is formed in the cylindrical main body of the spring guide seat (604), and the spring (8) is arranged in the second channel in a penetrating mode.
9. A primary and secondary ladder structure facilitating articulation locking as claimed in claim 1, wherein: two connecting pieces (10) are bolts, each bolt penetrates through the corresponding long strip notch (603), one end of each bolt is connected with the corresponding operating key (9), and the other end of each bolt penetrates through the corresponding long strip notch (603) and is connected with the corresponding sliding block (602).
10. A primary and secondary ladder structure facilitating hinge locking as claimed in claim 1, wherein: the two operating keys (9) are provided with toggle handles, and the action surfaces of the toggle handles, which are used for manual application, are provided with thread grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384636.5U CN217028761U (en) | 2021-12-29 | 2021-12-29 | Main and auxiliary ladder structure convenient to hinge and lock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123384636.5U CN217028761U (en) | 2021-12-29 | 2021-12-29 | Main and auxiliary ladder structure convenient to hinge and lock |
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| Publication Number | Publication Date |
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| CN217028761U true CN217028761U (en) | 2022-07-22 |
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| CN202123384636.5U Active CN217028761U (en) | 2021-12-29 | 2021-12-29 | Main and auxiliary ladder structure convenient to hinge and lock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024091656A1 (en) * | 2022-10-28 | 2024-05-02 | Werner Co. | Ladder with remote lock actuator |
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2021
- 2021-12-29 CN CN202123384636.5U patent/CN217028761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024091656A1 (en) * | 2022-10-28 | 2024-05-02 | Werner Co. | Ladder with remote lock actuator |
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