CN205100859U - Locking device of combination ladder - Google Patents
Locking device of combination ladder Download PDFInfo
- Publication number
- CN205100859U CN205100859U CN201520827250.2U CN201520827250U CN205100859U CN 205100859 U CN205100859 U CN 205100859U CN 201520827250 U CN201520827250 U CN 201520827250U CN 205100859 U CN205100859 U CN 205100859U
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- CN
- China
- Prior art keywords
- housing
- lock
- rear end
- snap close
- cleat stanchion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model provides a locking device of combination ladder which characterized in that includes connecting seat, hasp pendulum rod and presses the shell, the pedestal of connecting seat sets firmly in outer ladder, and the front end is equipped with first rotation tie point, and the rear end is equipped with the second and rotates the tie point, a service portion is established to the epirelief to the downward protruding lockpin of establishing of body of rod head of hasp pendulum rod, and body of rod rear end hinges rotates the tie point in the second, the outside of hasp pendulum rod is located to the casing cover of pressing the shell, and front end and rear end be upwards perk all, and the middle part articulates in first rotation tie point, constitutes the lever structure, the front end of casing and the linkage of the head of the body of rod, be equipped with first spring in pressing the shell, first spring supports to locate and presses between shell and the hasp pendulum rod, still be equipped with the locking slider in pressing the shell, reciprocating motion around the locking slider is done on the inner wall of casing, there is a location mouthful the rear end of connecting seat, and the locking slider protracts and gets into the location and mouthful coordinate with it. The utility model discloses a structure is more simple, has the advantage that processing cost and cost of labor are low, simultaneously convenient operation.
Description
Technical field
The utility model relates to combination ladder, is specifically related to a kind of locking device for locking the inside and outside cleat stanchion of combination ladder.
Background technology
Ladder is the common tool of climbing 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, during as needed the height of climbing to a higher point to exceed the limit of ladder as user, now ladder just cannot meet the requirement of climbing to a higher point.
In order to address this problem, industry has invented a kind of combination ladder, and this combination ladder comprises manhole ladder and outside staircase two parts, and the cleat stanchion of outside staircase is set on the cleat stanchion of manhole ladder, form described outside staircase to slide up and down on manhole ladder, to reach the effect of increasing the overall limit of climbing to a higher point of ladder.In order to lock the position of cleat stanchion on the cleat stanchion of manhole ladder of outside staircase, usually can arrange locking device between the cleat stanchion of interior outside staircase, traditional locking device structure is too complicated, causes the high of processing cost and cost of labor.
Therefore, how to solve the deficiency that above-mentioned prior art exists, just become the problem that the utility model will be researched and solved.
Summary of the invention
The utility model provides a kind of locking device of combination ladder, its object is to solve prior art processing cost and the higher problem of cost of labor.
For achieving the above object, the technical solution adopted in the utility model is: a kind of locking device of combination ladder, described combination ladder comprises manhole ladder and outside staircase, the cleat stanchion of described outside staircase is sheathed on the cleat stanchion of described manhole ladder, the cleat stanchion of described outside staircase offers outer lock hole along its thickness direction, and on the cleat stanchion of described manhole ladder, corresponding described outer lock hole offers multiple interior lock hole along the length direction of the cleat stanchion of manhole ladder; Described locking device is fixedly arranged on the described outer lock hole place on the cleat stanchion of described outside staircase, by the locking of external lock hole and a certain interior lock hole simultaneously and then the position relationship of location manhole ladder and outside staircase; Described locking device comprises Connection Block, snap close fork and pressing shell;
Described Connection Block has a pedestal, and this pedestal is fixedly arranged on the cleat stanchion of described outside staircase, and the front end of pedestal is provided with first and is rotationally connected a little, and the rear end of pedestal is provided with second and is rotationally connected a little;
Described snap close fork has a body of rod, head corresponding described outer lock hole projection one lock pin downwards of the body of rod, upwards projection one service portion; The rear end of this body of rod is articulated with described second and is rotationally connected a little, and the cleat stanchion forming described snap close fork relatively described outside staircase on described Connection Block swings, and described lock pin is had stretch into outer lock hole and deviate from outer lock hole two states;
Described pressing shell has a housing, and this case cover is located at the outside of described snap close fork; The front-end and back-end of described housing are all upturned, and the middle part of housing is articulated with described first and is rotationally connected a little, form lever construction; The front end of described housing and the service portion location fit of the described body of rod, the head of the front end and the body of rod that form described housing links;
Wherein, in described pressing shell, be also provided with one first spring, between the inwall that this first spring is located at pressing shell along the swaying direction of described snap close fork and snap close fork, and be positioned at described first and be rotationally connected rear a little; Described first spring orders about the rear end of described pressing case body upwards, and then the front end of housing is fitted in downwards on the cleat stanchion of described outside staircase, thus the lock pin ordering about described snap close fork keeps the state stretching into described outer lock hole;
Also be provided with a lock slider in described pressing shell, this lock slider slides along the length direction of the housing of described pressing shell and is positioned the rear end of housing, the inwall of described housing to do front-rear reciprocation movement, has retrude and two states of protracting; The corresponding described lock slider in rear end of described Connection Block pedestal is provided with a positioning port, extend into described positioning port before described lock slider to coordinate with it, thus the rear end locking described pressing case body fits on the cleat stanchion of described outside staircase downwards, now the front end of described housing tilts due to leverage, thus makes the lock pin of described snap close fork keep throwing off the state of described outer lock hole.
Related content in technique scheme is explained as follows:
1. in such scheme, the front end of described housing offers locating hole, and the service portion of the described body of rod stretches in this locating hole and engages with described locating hole, and the head of the front end and the body of rod that form described housing links.The front end of described housing is also reached and the coordinating of the service portion of the described body of rod by arranging the form of structure such as limited block, does not repeat one by one.
2. in such scheme, the tension force of described first spring is by the rear end upwards jack-up of described pressing case body, due to leverage, the front end of housing then fits in downwards on the cleat stanchion of described outside staircase, because the head of the front end of housing and the body of rod of described snap close fork links, therefore the lock pin of the described body of rod will keep the state stretching into described outer lock hole.
3. in such scheme, during described lock slider slides and is arranged in the rear end of housing a locating slot, and the range of a limit point limitation locking slide block by projection on housing.
4., in such scheme, the corresponding described positioning port of head of described lock slider is arranged, and be provided with one second spring between the afterbody of lock slider and described housing, the head that this second spring orders about described lock slider outwards moves;
The oral area outer rim of described positioning port is arc shaped, when described lock slider is moved down with the rear end of described pressing shell, retrude state can be become from the state of protracting before during positioning port described in the head contact of described lock slider, after the head of described lock slider continues to enter described positioning port downwards, the head of lock slider reverts to by retrude state the state of protracting again, and the contraposition of reaching described lock slider and described positioning port coordinates locking.
5., in such scheme, described lock slider is also replaced the second spring by other form of structure and is realized moving back and forth, but due to structure more complicated than the second spring, therefore not elect.
Operating principle of the present utility model and advantage as follows:
The locking device of a kind of combination ladder of the utility model, comprises Connection Block, snap close fork and pressing shell.Wherein, Connection Block is fixed in the outside staircase of combination ladder, has former and later two and is rotationally connected a little.The head of snap close fork is provided with lock pin and service portion, and rear end is articulated with being rotationally connected a little of Connection Block rear portion.Pressing jacket is located at the outside of snap close fork, and two ends are upturned, and what middle part was articulated with Connection Block front portion is rotationally connected a little, in lever construction.The service portion of snap close fork is connected with the leading portion in pressing shell, and the formation pressing front end of shell and the head of snap close fork link.The first spring is also provided with in pressing shell, between the inwall that pressing shell is located at by this first spring and snap close fork, order about the rear end of pressing shell upwards, and then the front end of pressing shell is fitted on the cleat stanchion of outside staircase downwards, thus the lock pin ordering about snap close fork keeps the state stretching into outer lock hole; Also be provided with lock slider in pressing shell, this lock slider does front-rear reciprocation movement on the inwall of pressing shell; The corresponding lock slider in rear end of Connection Block is provided with positioning port, extend into positioning port before lock slider to coordinate with it, thus the rear end of locking pressing shell fits in downwards on the cleat stanchion of outside staircase, the front end now pressing shell tilts due to leverage, thus makes the lock pin of snap close fork keep throwing off the state of outer lock hole.Design whereby, compared to existing technologies, structure is more simple for the utility model, therefore has processing cost and the low advantage of cost of labor, simultaneously easy to operate.
Accompanying drawing explanation
Accompanying drawing 1 is the using state reference diagram (released state) of the utility model embodiment;
Accompanying drawing 2 is the using state reference diagram (lock-out state) of the utility model embodiment;
Accompanying drawing 3 is the structural representation one (released state) of the utility model embodiment;
Accompanying drawing 4 is the structural representation two (in locking process) of the utility model embodiment;
Accompanying drawing 5 is the structural representation three (lock-out state) of the utility model embodiment.
In above accompanying drawing: 1. manhole ladder; 2. outside staircase; 3. outer lock hole; 4. lock hole in; 5. Connection Block; 6. snap close fork; 7. press shell; 8. first be rotationally connected a little; 9. second be rotationally connected a little; 10. lock pin; 11. service portions; 12. locating holes; 13. first springs; 14. lock sliders; 15. locating slots; 16. limit points; 17. positioning ports; 18. second springs.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment: shown in accompanying drawing 1 ~ 5, a kind of locking device of combination ladder, for vertically arranging state when locking device uses in figure, this case is then described with state during locking device horizontal positioned.
Described combination ladder comprises manhole ladder 1 and outside staircase 2, the cleat stanchion of described outside staircase 2 is sheathed on the cleat stanchion of described manhole ladder 1, the cleat stanchion of described outside staircase 2 offers outer lock hole 3 along its thickness direction, and on the cleat stanchion of described manhole ladder 1, corresponding described outer lock hole 3 offers multiple interior lock hole 4 along the length direction of the cleat stanchion of manhole ladder 1; Described locking device is fixedly arranged on described outer lock hole 3 place on the cleat stanchion of described outside staircase 2, by the locking of external lock hole 3 and a certain interior lock hole 4 simultaneously and then the position relationship of location manhole ladder 1 and outside staircase 2; Described locking device comprises Connection Block 5, snap close fork 6 and pressing shell 7;
Described Connection Block 5 has a pedestal, and this pedestal is fixedly arranged on the cleat stanchion of described outside staircase 2, and the front end of pedestal is provided with first and is rotationally connected a little 8, and the rear end of pedestal is provided with second and is rotationally connected a little 9;
Described snap close fork 6 has a body of rod, head corresponding described outer lock hole 3 projection one lock pin 10 downwards of the body of rod, upwards projection one service portion 11; The rear end of this body of rod is articulated with described second and is rotationally connected a little 9, and the cleat stanchion forming described snap close fork 6 relatively described outside staircase 2 on described Connection Block 5 swings, and described lock pin 10 is had stretch into outer lock hole 3 and deviate from outer lock hole 3 two states;
Described pressing shell 7 has a housing, and this case cover is located at the outside of described snap close fork 6; The front-end and back-end of described housing are all upturned, and the middle part of housing is articulated with described first and is rotationally connected a little 8, forms lever construction; The front end of described housing offers locating hole 12, and the service portion 11 of the described body of rod stretches in this locating hole 12 and engages with described locating hole 12, and the head of the front end and the body of rod that form described housing links.
Wherein, be also provided with one first spring 13 in described pressing shell 7, this first spring 13 is arranged at along the swaying direction of described snap close fork 6 rear that described first is rotationally connected a little 8; The upper end of the first spring 13 is resisted against the inwall of described pressing shell 7, and lower end abutment is on the body of rod of described snap close fork 6; The tension force of described first spring 13 is by the rear end upwards jack-up of described pressing shell 7 housing, due to leverage, the front end of housing then fits on the cleat stanchion of described outside staircase 2 downwards, because the head of the front end of housing and the body of rod of described snap close fork 6 links, therefore the lock pin 10 of the described body of rod will keep the state stretching into described outer lock hole 3.
A lock slider 14 is also provided with in described pressing shell 7, this lock slider 14 is positioned in the locating slot 15 in the rear end of housing along the length direction slip of the housing of described pressing shell 7, the inwall of described housing does front-rear reciprocation movement, there is retrude and two states of protracting; Described lock slider 14 is by the range of a limit point 16 limitation locking slide block 14 of projection on housing.The corresponding described lock slider 14 in rear end of described Connection Block 5 pedestal is provided with a positioning port 17, extend into described positioning port 17 before described lock slider 14 to coordinate with it, thus the rear end locking described pressing shell 7 housing fits on the cleat stanchion of described outside staircase 2 downwards, now the front end of described housing tilts due to leverage, thus makes the lock pin 10 of described snap close fork 6 keep throwing off the state of described outer lock hole 3.
Wherein, the corresponding described positioning port 17 of head of described lock slider 14 is arranged, and be provided with one second spring 18 between the afterbody of lock slider 14 and described housing, the head that this second spring 18 orders about described lock slider 14 outwards moves;
The oral area outer rim of described positioning port 17 is arc shaped, when described lock slider 14 is moved down with the rear end of described pressing shell 7, retrude state can be become from the state of protracting before during positioning port 17 described in the head contact of described lock slider 14, after the head of described lock slider 14 continues to enter described positioning port 17 downwards, the head of lock slider 14 reverts to by retrude state the state of protracting again, and the contraposition of reaching described lock slider 14 and described positioning port 17 coordinates locking.
Now just operating principle of the present utility model is described as follows: start, the outer lock hole in outside staircase deviate from by the lock pin of snap close fork, and the outside staircase of combination ladder and manhole ladder are in nonlocking relative sliding state; Then, adjustment outside staircase and the position of manhole ladder, arrive the combination ladder overall height that user expects, and make lock hole contraposition on outer lock hole in outside staircase and manhole ladder instantly; Again, press the front end of pressing shell, the head of interlock snap close fork is downward, the lock pin of snap close fork is made to stretch into outer lock hole and interior lock hole, and then the position relationship of locking manhole ladder and outside staircase, now because the first spring continues the rear end upwards forcing in pressing shell, and the lever construction design owing to pressing shell, therefore the downward trend pressing case nose is kept, and namely keeps the lock pin of snap close fork to the locking of manhole ladder and outside staircase; To remove the locking of manhole ladder and outside staircase, the tension force then overcoming the first spring presses the rear end of pressing shell downwards, lift the front end of pressing shell, and then make the lock pin of snap close fork deviate from outer lock hole and interior lock hole, now the head of lock slider enters in the positioning port of Connection Block, keeps released state of the present utility model.
The locking device of a kind of combination ladder of the utility model, comprises Connection Block, snap close fork and pressing shell.Wherein, Connection Block is fixed in the outside staircase of combination ladder, has former and later two and is rotationally connected a little.The head of snap close fork is provided with lock pin and service portion, and rear end is articulated with being rotationally connected a little of Connection Block rear portion.Pressing jacket is located at the outside of snap close fork, and two ends are upturned, and what middle part was articulated with Connection Block front portion is rotationally connected a little, in lever construction.The service portion of snap close fork is connected with the leading portion in pressing shell, and the formation pressing front end of shell and the head of snap close fork link.The first spring is also provided with in pressing shell, between the inwall that pressing shell is located at by this first spring and snap close fork, order about the rear end of pressing shell upwards, and then the front end of pressing shell is fitted on the cleat stanchion of outside staircase downwards, thus the lock pin ordering about snap close fork keeps the state stretching into outer lock hole; Also be provided with lock slider in pressing shell, this lock slider does front-rear reciprocation movement on the inwall of pressing shell; The corresponding lock slider in rear end of Connection Block is provided with positioning port, extend into positioning port before lock slider to coordinate with it, thus the rear end of locking pressing shell fits in downwards on the cleat stanchion of outside staircase, the front end now pressing shell tilts due to leverage, thus makes the lock pin of snap close fork keep throwing off the state of outer lock hole.Design whereby, compared to existing technologies, structure is more simple for the utility model, therefore has processing cost and the low advantage of cost of labor, simultaneously easy to operate.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (2)
1. the locking device of a combination ladder, described combination ladder comprises manhole ladder and outside staircase, the cleat stanchion of described outside staircase is sheathed on the cleat stanchion of described manhole ladder, the cleat stanchion of described outside staircase offers outer lock hole along its thickness direction, and on the cleat stanchion of described manhole ladder, corresponding described outer lock hole offers multiple interior lock hole along the length direction of the cleat stanchion of manhole ladder; Described locking device is fixedly arranged on the described outer lock hole place on the cleat stanchion of described outside staircase, is reached the object of location manhole ladder and outside staircase position relationship by the locking of simultaneously externally lock hole and a certain interior lock hole; It is characterized in that: described locking device comprises Connection Block, snap close fork and pressing shell;
Described Connection Block has a pedestal, and this pedestal is fixedly arranged on the cleat stanchion of described outside staircase, and the front end of pedestal is provided with first and is rotationally connected a little, and the rear end of pedestal is provided with second and is rotationally connected a little;
Described snap close fork has a body of rod, head corresponding described outer lock hole projection one lock pin downwards of the body of rod, upwards projection one service portion; The rear end of this body of rod is articulated with described second and is rotationally connected a little, and the cleat stanchion forming described snap close fork relatively described outside staircase on described Connection Block swings, and described lock pin is had stretch into outer lock hole and deviate from outer lock hole two states;
Described pressing shell has a housing, and this case cover is located at the outside of described snap close fork; The front-end and back-end of described housing are all upturned, and the middle part of housing is articulated with described first and is rotationally connected a little, form lever construction; The front end of described housing and the service portion location fit of the described body of rod, the head of the front end and the body of rod that form described housing links;
Wherein, in described pressing shell, be also provided with one first spring, between the inwall that this first spring is located at pressing shell along the swaying direction of described snap close fork and snap close fork, and be positioned at described first and be rotationally connected rear a little; Described first spring orders about the rear end of described pressing case body upwards, and then the front end of housing is fitted in downwards on the cleat stanchion of described outside staircase, thus the lock pin ordering about described snap close fork keeps the state stretching into described outer lock hole;
Also be provided with a lock slider in described pressing shell, this lock slider slides along the length direction of the housing of described pressing shell and is positioned the rear end of housing, the inwall of described housing to do front-rear reciprocation movement, has retrude and two states of protracting; The corresponding described lock slider in rear end of described Connection Block pedestal is provided with a positioning port, extend into described positioning port before described lock slider to coordinate with it, thus the rear end locking described pressing case body fits on the cleat stanchion of described outside staircase downwards, now the front end of described housing tilts due to leverage, thus makes the lock pin of described snap close fork keep throwing off the state of described outer lock hole.
2. locking device according to claim 1, it is characterized in that: the corresponding described positioning port of head of described lock slider is arranged, be provided with one second spring between the afterbody of lock slider and described housing, the head that this second spring orders about described lock slider outwards moves;
The oral area outer rim of described positioning port is arc shaped, when described lock slider is moved down with the rear end of described pressing shell, retrude state can be become from the state of protracting before during positioning port described in the head contact of described lock slider, after the head of described lock slider continues to enter described positioning port downwards, the head of lock slider reverts to by retrude state the state of protracting again, and the contraposition of reaching described lock slider and described positioning port coordinates locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827250.2U CN205100859U (en) | 2015-10-23 | 2015-10-23 | Locking device of combination ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827250.2U CN205100859U (en) | 2015-10-23 | 2015-10-23 | Locking device of combination ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205100859U true CN205100859U (en) | 2016-03-23 |
Family
ID=55516646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520827250.2U Withdrawn - After Issue CN205100859U (en) | 2015-10-23 | 2015-10-23 | Locking device of combination ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205100859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-10-23 CN CN201520827250.2U patent/CN205100859U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105221064B (en) * | 2015-10-23 | 2017-01-04 | 苏州飞华铝制工业有限公司 | Locking device of combined ladder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160323 Effective date of abandoning: 20161019 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |