CN106593290A - Locking device capable of conducting double-way rotation operation for combination ladder - Google Patents
Locking device capable of conducting double-way rotation operation for combination ladder Download PDFInfo
- Publication number
- CN106593290A CN106593290A CN201611218794.4A CN201611218794A CN106593290A CN 106593290 A CN106593290 A CN 106593290A CN 201611218794 A CN201611218794 A CN 201611218794A CN 106593290 A CN106593290 A CN 106593290A
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- Prior art keywords
- ladder
- shaft
- lock
- lock pin
- fixed block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E06C7/06—Securing devices or hooks for parts of extensible ladders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
Disclosed is a locking device capable of conducting double-way rotation operation for a combination ladder. The locking device comprises fixed blocks and handle blocks; rod-shaped lock pins penetrate through the fixed blocks correspondingly; and the inner ends of the rod-shaped lock pins penetrate through the locking holes formed in an outer ladder body and an inner ladder body to complete locking of the combination ladder. The handle blocks are rotatably arranged on the outer sides of the fixed blocks in a sleeving mode. The outer ends of the rod-shaped lock pins are fixedly arranged on the inner sides of the handle blocks to enable the handle blocks to rotate on the fixed blocks with the rod-shaped lock pins as shafts. Springs are further arranged on the rod-shaped lock pins in a sleeving mode, the inner ends of the springs are positioned at the inner ends of the rod-shaped lock pins, and the outer ends of the springs are positioned in the fixed blocks, wherein the outer surfaces of the fixed blocks are inclined to form convex positioning portions, and concave positioning grooves are formed in the inner surfaces, corresponding to the convex positioning portions, of the handle blocks. When the handle blocks rotate, through squeezing and abutting of the positioning portions and the positioning grooves, the handle blocks are forced to overcome pulling force of the springs and produce axial displacement outward while rotating. According to the locking device capable of conducting double-way rotation operation for the combination ladder, the quantity of parts is significantly reduced, the double-way rotation operation can be realized, and operation convenience is improved.
Description
Technical field
The present invention relates to combination ladder, and in particular to a kind of adjustable for height combination ladder, the combination ladder is provided with locking device,
The locking device is used to lock the position of the inside and outside cleat stanchion of combination ladder.
Background technology
Ladder, is the common tool climbed to a higher point, and common are vertical ladder or double ladder.In most cases, ladder can meet
The needs of climbing to a higher point of user, but in some cases, such as when user needs the height climbed to a higher point to exceed the limit of ladder, now
Ladder cannot just meet the requirement climbed to a higher point.
In order to solve this problem, industry has invented a kind of combination ladder, and the combination ladder includes manhole ladder and outside staircase two parts, outward
The cleat stanchion of ladder is set on the cleat stanchion of manhole ladder, and constituting the outside staircase can slide up and down on manhole ladder, and to reach, to increase ladder whole
Body is climbed to a higher point the effect of the limit.In order to lock position of the cleat stanchion of outside staircase on the cleat stanchion of manhole ladder, it will usually in the cleat stanchion of interior outside staircase
Between locking device is set.The outside setting flexible lock pin that traditional locking device structure passes through two cleat stanchions in outside staircase, and
Some location holes are opened up along cleat stanchion length direction on the cleat stanchion of manhole ladder, using the elastic self-locking of the flexible lock pin differing heights are coordinated
The location hole positioning outside staircase of position and manhole ladder state.The conventional locking mechanisms find there is problems with Long-Time Service：First,
Such as in order to pursue the reliability of locking, it is desirable to which the spring of flexible lock pin there will be enough pulling force, cause ladder when height is adjusted,
The very painstaking inconvenience of the unblock of the locking device；2nd, such as in order to when pursuing ladder and heightening, the operation ease of the locking device,
Then requiring the spring of flexible lock pin again can not have a too big pulling force, therefore and reduce the reliability of locking.
Therefore, applicant applied on 01 19th, 2,016 one it is entitled《A kind of adjustable for height combination ladder》It is special
Profit, its patent application number is 201610033751.2.The patent overcomes above-mentioned prior art in locking reliability and operates just
Contradiction present on profit, but the patent be also designed personnel find have the following disadvantages：First, complex structure：Cause part compared with
It is many, improve Material Cost；Assembling inconvenience is also resulted in, is wasted time and energy, not only improve human cost, also reduce production effect
Rate；2nd, it is only capable of unidirectional unblock and locks, to the convenience of operation limitation is brought.
Therefore, the deficiency that above-mentioned prior art is present how is solved, is become as the problem to be researched and solved of the invention.
The content of the invention
It is an object of the invention to provide it is a kind of for combination ladder can bidirectional rotation operation locking device.
To reach above-mentioned purpose, the technical solution used in the present invention is：
It is a kind of for combination ladder can bidirectional rotation operation locking device, the combination ladder include manhole ladder, outside staircase, the locking
Device is used to lock the manhole ladder and the outside staircase；The cleat stanchion of the outside staircase is sheathed on the cleat stanchion of the manhole ladder, the ladder of outside staircase
Outer lock hole is offered along its thickness direction on post, length of the correspondence outer lock hole along the cleat stanchion of manhole ladder on the cleat stanchion of manhole ladder
Direction offers multiple interior lock holes；The locking device is fixedly arranged at the outer lock hole on the cleat stanchion of outside staircase, by simultaneously right
The locking of outer lock hole and a certain interior lock hole reaches the purpose of positioning manhole ladder and outside staircase position relationship, that is, reach to combination ladder
Locking；
The locking device includes fixed block and handle block；Wherein,
The fixed block is fixedly arranged on the cleat stanchion of the outside staircase, and a shaft-like lock pin is equipped with fixed block, and the shaft-like lock pin is vertical
In the cleat stanchion of the outside staircase, the axle center of shaft-like lock pin is coaxially disposed with the hole heart of the outer lock hole；The shaft-like lock pin is solid
Determine the inward-outward direction in block along cleat stanchion to move reciprocatingly, constitute the shaft-like lock pin the inner stretch into via the outer lock hole or
Remove the interior lock hole；When the inner of the shaft-like lock pin is stretched in the interior lock hole via the outer lock hole, it is
The locking device is to the outside staircase of combination ladder and the lock-out state of manhole ladder；When the outer end of the shaft-like lock pin is via the outer locking
It is the locking device to the outside staircase of combination ladder and the released state of manhole ladder when hole removes the interior lock hole；
The handle block turning set is located at the outside of the fixed block, with a Handheld Division；The outer end of the shaft-like lock pin is outside
Stretch out the fixed block, and be fixedly arranged on the inner side of the handle block, it is axle described solid to constitute the handle block with shaft-like lock pin
Determine to be rotated on block；
Be arranged with a spring on the shaft-like lock pin, the inner of the spring against the inner for being positioned at shaft-like lock pin, spring it is outer
End is then against being positioned at fixed block inner side；When the combination ladder is lock-out state, the shaft-like lock pin stretches into inwardly institute
State in interior lock hole, state of the spring in upholding completely, and when the combination ladder is released state, the handle block
Shaft-like lock pin is driven towards outer displacement, state of the spring in compressing completely；
Wherein, two planes of symmetry of the fixed block outer surface are obliquely installed, and in shape is outwards drawn in, constitute on fixed block outer surface
Form the location division of an evagination；The handle block inner surface to should the location division of evagination be formed with the locating slot of an indent；Structure
Into in lock-out state, the handle block assembles conjunction realization with the fixed block by the locating slot and the embedding of the location division
The positioning of handle block and fixed block, when the handle block is rotated, by pressing against for location division and locating slot, forces described
Handle block overcomes the pulling force of spring on shaft-like lock pin and produces axial displacement outwardly, while driving the inner of shaft-like lock pin to remove institute
Interior lock hole is stated, the unblock of combination ladder is reached.
Relevant content in above-mentioned technical proposal is explained as follows：
1. in such scheme, the outer end of the shaft-like lock pin is fixedly arranged on the inner side of the handle block, the positioning by an alignment pin
Pin is arranged in outer end and the handle block of shaft-like lock pin simultaneously.
2. in such scheme, the location division of evagination is obliquely installed by two planes of symmetry of fixed block outer surface and is constituted, and carries out reality
No matter the handle block of existing locking device turns clockwise or rotate counterclockwise can realize unblock, and can rotate 180
Make locking device return to original lock-out state position after degree, carry out facilitating the operation of user.
3. in such scheme, the locating slot of indent and the location division of evagination assemble conjunction by embedding, not only make handle block and consolidate
Determine block combine in the lock-out state of locking device it is more stable, reliable, and when operation is unlocked, handle block be able to compared with
Easily spinning movement to be converted into into axial displacement, and do not affected by rotation direction, i.e., it is two-way all easily to rotate unblock.
4. in such scheme, the both sides outer rim of the handle block is further opened with respectively one along the vertical direction of the locating slot
Draw-in groove；When the handle block is rotated to unlocked position, the draw-in groove is snapped in the location division of the fixed block, to reach to solution
The holding of lock status, lifts convenience and reliability that user uses.
The operation principle and advantage of the present invention is as follows：
The present invention it is a kind of for combination ladder can bidirectional rotation operation locking device, including fixed block and handle block；Fixed block
In be equipped with a shaft-like lock pin, the inner of the shaft-like lock pin is arranged in the lock hole of outside staircase, manhole ladder, to reach to combination ladder
Locking；Handle block turning set is fixedly arranged on handle block inner side, constitutes handle block with bar located at fixed block outside, the outer end of shaft-like lock pin
Shape lock pin is rotated for axle on fixed block；Spring is also arranged with shaft-like lock pin, its inner is positioned at the inner of shaft-like lock pin, bullet
Spring outer end is positioned at fixed block；Wherein, the location division of evagination, handle block inner surface correspondence are tilted with fixed block outer surface
The location division of the evagination is formed with the locating slot of indent；When being formed in lock-out state, handle block and fixed block by locating slot and
The embedding of location division assembles conjunction and realizes both positioning, when handle block is rotated, by pressing against for location division and locating slot, forces
Handle block overcomes the pulling force of spring and produces axial displacement outwardly while rotating, and takes the inner of shaft-like lock pin out of, reaches group
Close the unblock of ladder.Compared to existing technologies, the present invention has significantly simplified the quantity of parts, not only reduces Material Cost,
And production cost is reduced, production efficiency is improved；Meanwhile, by the evagination location division that is dexterously formed slopely and indent
Locating slot so that locking device can also realize that bidirectional rotation is operated while lock-out state reliability is ensured, be substantially improved
The use feeling and operation ease of user.To sum up, the present invention has simple structure, use progressive easy to use.
Description of the drawings
Accompanying drawing 1 is the structural representation one of the embodiment of the present invention（Main view）；
Accompanying drawing 2 is the structural representation two of the embodiment of the present invention（Side-looking）；
Accompanying drawing 3 is the partial enlarged drawing that embodiment of the present invention locking device is lock-out state；
Accompanying drawing 4 is the partial sectional view that embodiment of the present invention locking device is lock-out state；
Accompanying drawing 5 is the partial enlarged drawing that embodiment of the present invention locking device is released state；
Accompanying drawing 6 is the partial sectional view that embodiment of the present invention locking device is released state；
Accompanying drawing 7 is the decomposition explosion figure one of locking device in the embodiment of the present invention（Released state）；
Accompanying drawing 8 is the decomposition explosion figure two of locking device in the embodiment of the present invention（Released state）.
In the figures above：1. manhole ladder；2. outside staircase；3. outer lock hole；4. lock hole in；5. fixed block；6. handle block；7. bar
Shape lock pin；8. Handheld Division；9. alignment pin；10. spring；11. inclined-planes；12. location divisions；13. locating slots；14. draw-in grooves.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Embodiment：Referring to shown in accompanying drawing 1～8, it is a kind of for combination ladder can bidirectional rotation operation locking device, the combination
Ladder includes manhole ladder 1, outside staircase 2, the relatively described manhole ladder 1 of the outside staircase 2 height adjustable in the vertical direction.The locking device is used for
Locking manhole ladder 1 and outside staircase 2；The cleat stanchion of the outside staircase 2 is sheathed on the cleat stanchion of the manhole ladder 1, along its thickness on the cleat stanchion of outside staircase 2
Direction offers outer lock hole 3, and the correspondence outer lock hole 3 is offered along the length direction of the cleat stanchion of manhole ladder 1 on the cleat stanchion of manhole ladder 1
Multiple interior lock holes 4；The locking device is fixedly arranged at the outer lock hole 3 on the cleat stanchion of outside staircase 2, by external lock hole 3 simultaneously
And the locking of a certain interior lock hole 4 reaches the purpose of positioning manhole ladder 1 and the position relationship of outside staircase 2, that is, reach the lock to combination ladder
It is fixed.
The locking device includes fixed block 5 and handle block 6；Wherein, the fixed block 5 is fixedly arranged on the cleat stanchion of outside staircase 2,
A shaft-like lock pin 7 is equipped with fixed block 5, the shaft-like lock pin 7 perpendicular to the outside staircase 2 cleat stanchion, the axle center of shaft-like lock pin 7 with
The hole heart of the outer lock hole 3 is coaxially disposed；The shaft-like lock pin 7 does reciprocal fortune in fixed block 5 along the inward-outward direction of cleat stanchion
Dynamic, the interior lock hole 4 is stretched into or removed in the inner for constituting the shaft-like lock pin 7 via the outer lock hole 3；When described shaft-like
It is the locking device to the outer of combination ladder when the inner of lock pin 7 is stretched in the interior lock hole 4 via the outer lock hole 3
The lock-out state of ladder 2 and manhole ladder 1；When the outer end of the shaft-like lock pin 7 removes the interior lock hole 4 via the outer lock hole 3
When, it is the locking device to the outside staircase 2 of combination ladder and the released state of manhole ladder 1.
Located at the outside of the fixed block 5, with a Handheld Division 8, the Handheld Division 8 supplies user to the turning set of handle block 6
Hand-held force rotation；The protruding fixed block 5 in outer end of the shaft-like lock pin 7, and be fixedly arranged on by an alignment pin 9 described
The inner side of handle block 6, constitutes the handle block 6 and rotates on the fixed block 5 by axle of shaft-like lock pin 7.
It is arranged with a spring 10 on the shaft-like lock pin 7, the inner of the spring 10 is against being positioned in shaft-like lock pin 7
End, the outer end of spring 10 is then against being positioned at the inner side of the fixed block 5；It is described shaft-like when the combination ladder is lock-out state
Lock pin 7 is stretched into inwardly in the interior lock hole 4, state of the spring 10 in upholding completely, and works as the combination ladder for solution
During lock status, the handle block 6 drives shaft-like lock pin 7 towards outer displacement, state of the spring 10 in compressing completely.
Wherein, two planes of symmetry of the outer surface of the fixed block 5 are obliquely installed to form two inclined-planes 11, and in outwards gathering shape,
So that the cross section of fixed block 5 is in subtriangular shape, the location division that an evagination is formed on the outer surface of fixed block 5 is constituted
12；The inner surface of handle block 6 to should the location division 12 of evagination be formed with the locating slot 13 of an indent；It is formed in lock-out state
When, the handle block 6 closes both realizations with the fixed block 5 by embedding the assembling of the locating slot 13 and the location division 12
Positioning, when the handle block 6 is rotated clockwise or counterclockwise, by pressing against for location division 12 and locating slot 13, forces
The handle block 6 overcomes the pulling force of spring 10 on shaft-like lock pin 7 and produces axial displacement outwardly, while driving shaft-like lock pin 7
The inner removes the interior lock hole 4, reaches the unblock of combination ladder.
Wherein, the both sides outer rim of the handle block 6 is further opened with respectively a draw-in groove along the vertical direction of the locating slot 13
14；When the handle block 6 is rotated to unlocked position, the draw-in groove 14 is snapped in the location division 12 of the fixed block 5, to reach
Holding to released state, lifts convenience and reliability that user uses.
The present invention it is a kind of for combination ladder can bidirectional rotation operation locking device, including fixed block and handle block；Gu
Determine to be equipped with a shaft-like lock pin in block, the inner of the shaft-like lock pin is arranged in the lock hole of outside staircase, manhole ladder, with up to pair-wise combination
The locking of ladder；Handle block turning set is fixedly arranged on handle block inner side, constitutes handle block located at fixed block outside, the outer end of shaft-like lock pin
Rotate on fixed block by axle of shaft-like lock pin；Spring is also arranged with shaft-like lock pin, its inner is positioned at the interior of shaft-like lock pin
End, outer spring end is positioned at fixed block；Wherein, the location division of evagination, table in handle block are tilted with fixed block outer surface
In the face of should the location division of evagination be formed with the locating slot of indent；When being formed in lock-out state, handle block is with fixed block by fixed
Position groove and the embedding of location division assemble both conjunction realization positioning, when handle block is rotated, are supported with the extruding of locating slot by location division
Lean on, force handle block to overcome the pulling force of spring and produce axial displacement outwardly while rotating, take the inner of shaft-like lock pin out of,
Reach the unblock of combination ladder.Compared to existing technologies, the present invention has significantly simplified the quantity of parts, not only reduces material
Cost, and production cost is reduced, improve production efficiency；Meanwhile, by the evagination location division that is dexterously formed slopely with
And indent locating slot so that locking device can also realize that bidirectional rotation is operated while lock-out state reliability is ensured, greatly
Width improves the use feeling and operation ease of user.To sum up, the present invention improves with simple structure, easy to use using
Property.
Above-described embodiment technology design only to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this, can not be limited the scope of the invention with this.It is all according to the present invention
Equivalence changes or modification that Spirit Essence is made, all should be included within the scope of the present invention.
Claims (2)
1. it is a kind of for combination ladder can bidirectional rotation operation locking device, the combination ladder include manhole ladder, outside staircase, the lock
Device is determined for locking the manhole ladder and the outside staircase；The cleat stanchion of the outside staircase is sheathed on the cleat stanchion of the manhole ladder, outside staircase
Outer lock hole is offered along its thickness direction on cleat stanchion, length of the correspondence outer lock hole along the cleat stanchion of manhole ladder on the cleat stanchion of manhole ladder
Degree direction offers multiple interior lock holes；The locking device is fixedly arranged at the outer lock hole on the cleat stanchion of outside staircase, by simultaneously
The externally locking of lock hole and a certain interior lock hole reaches the purpose of positioning manhole ladder and outside staircase position relationship, i.e., up to pair-wise combination
The locking of ladder；It is characterized in that：
The locking device includes fixed block and handle block；Wherein,
The fixed block is fixedly arranged on the cleat stanchion of the outside staircase, and a shaft-like lock pin is equipped with fixed block, and the shaft-like lock pin is vertical
In the cleat stanchion of the outside staircase, the axle center of shaft-like lock pin is coaxially disposed with the hole heart of the outer lock hole；The shaft-like lock pin is solid
Determine the inward-outward direction in block along cleat stanchion to move reciprocatingly, constitute the shaft-like lock pin the inner stretch into via the outer lock hole or
Remove the interior lock hole；When the inner of the shaft-like lock pin is stretched in the interior lock hole via the outer lock hole, it is
The locking device is to the outside staircase of combination ladder and the lock-out state of manhole ladder；When the outer end of the shaft-like lock pin is via the outer locking
It is the locking device to the outside staircase of combination ladder and the released state of manhole ladder when hole removes the interior lock hole；
The handle block turning set is located at the outside of the fixed block, with a Handheld Division；The outer end of the shaft-like lock pin is outside
Stretch out the fixed block, and be fixedly arranged on the inner side of the handle block, it is axle described solid to constitute the handle block with shaft-like lock pin
Determine to be rotated on block；
Be arranged with a spring on the shaft-like lock pin, the inner of the spring against the inner for being positioned at shaft-like lock pin, spring it is outer
End is then against being positioned at fixed block inner side；When the combination ladder is lock-out state, the shaft-like lock pin stretches into inwardly institute
State in interior lock hole, state of the spring in upholding completely, and when the combination ladder is released state, the handle block
Shaft-like lock pin is driven towards outer displacement, state of the spring in compressing completely；
Wherein, two planes of symmetry of the fixed block outer surface are obliquely installed, and in shape is outwards drawn in, constitute on fixed block outer surface
Form the location division of an evagination；The handle block inner surface to should the location division of evagination be formed with the locating slot of an indent；Structure
Into in lock-out state, the handle block assembles conjunction realization with the fixed block by the locating slot and the embedding of the location division
The positioning of handle block and fixed block, when the handle block is rotated, by pressing against for location division and locating slot, forces described
Handle block overcomes the pulling force of spring on shaft-like lock pin and produces axial displacement outwardly, while driving the inner of shaft-like lock pin to remove institute
Interior lock hole is stated, the unblock of combination ladder is reached.
2. locking device according to claim 1, it is characterised in that：The both sides outer rim of the handle block is along the locating slot
Vertical direction be further opened with a draw-in groove respectively；When the handle block is rotated to unlocked position, the draw-in groove is snapped in described
The location division of fixed block, to reach the holding to released state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218794.4A CN106593290A (en) | 2016-12-26 | 2016-12-26 | Locking device capable of conducting double-way rotation operation for combination ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218794.4A CN106593290A (en) | 2016-12-26 | 2016-12-26 | Locking device capable of conducting double-way rotation operation for combination ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593290A true CN106593290A (en) | 2017-04-26 |
Family
ID=58603988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218794.4A Pending CN106593290A (en) | 2016-12-26 | 2016-12-26 | Locking device capable of conducting double-way rotation operation for combination ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593290A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027426A (en) * | 1998-07-14 | 2000-01-25 | Nippon Light Metal Co Ltd | Expansion leg with lock visual confirming mechanism |
| CN202673121U (en) * | 2012-05-25 | 2013-01-16 | 苏州飞华铝制工业有限公司 | Positioning device for telescoping of inner and outer ladder set |
| CN105221063A (en) * | 2015-10-23 | 2016-01-06 | 苏州飞华铝制工业有限公司 | A kind of locking device of combination ladder |
| CN105221064A (en) * | 2015-10-23 | 2016-01-06 | 苏州飞华铝制工业有限公司 | A kind of locking device of combination ladder |
| CN106337651A (en) * | 2016-10-28 | 2017-01-18 | 苏州飞华铝制工业有限公司 | Bilateral rotation operation locking device for combination ladder |
-
2016
- 2016-12-26 CN CN201611218794.4A patent/CN106593290A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027426A (en) * | 1998-07-14 | 2000-01-25 | Nippon Light Metal Co Ltd | Expansion leg with lock visual confirming mechanism |
| CN202673121U (en) * | 2012-05-25 | 2013-01-16 | 苏州飞华铝制工业有限公司 | Positioning device for telescoping of inner and outer ladder set |
| CN105221063A (en) * | 2015-10-23 | 2016-01-06 | 苏州飞华铝制工业有限公司 | A kind of locking device of combination ladder |
| CN105221064A (en) * | 2015-10-23 | 2016-01-06 | 苏州飞华铝制工业有限公司 | A kind of locking device of combination ladder |
| CN106337651A (en) * | 2016-10-28 | 2017-01-18 | 苏州飞华铝制工业有限公司 | Bilateral rotation operation locking device for combination ladder |
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Application publication date: 20170426 |
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| WD01 | Invention patent application deemed withdrawn after publication |