CN207863847U - A kind of locking system of extension ladder - Google Patents
A kind of locking system of extension ladder Download PDFInfo
- Publication number
- CN207863847U CN207863847U CN201720969774.4U CN201720969774U CN207863847U CN 207863847 U CN207863847 U CN 207863847U CN 201720969774 U CN201720969774 U CN 201720969774U CN 207863847 U CN207863847 U CN 207863847U
- Authority
- CN
- China
- Prior art keywords
- ladder
- lock part
- stationary lock
- latch fitting
- rotation latch
- 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.)
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Abstract
The utility model provides a kind of locking system of extension ladder, including：Dead axle, stationary lock part, torsion elements, shifting axle, rotation latch fitting, locating part；The cooperation of the ladder one of the dead axle and extension ladder constitutes a fixing piece or relatively rotates part；The stationary lock part coordinates with dead axle, is installed on ladder one, is formed and is relatively rotated with ladder one, and stationary lock part is locked on two riding club of ladder；The torsion elements are continuously available to one torsion of stationary lock part, and stationary lock part is made to keep the locking with two riding club of ladder；The shifting axle is connected latch fitting is rotated with stationary lock part, and rotation latch fitting is formed with stationary lock part and is relatively rotated；The rotation latch fitting tail end stretches into two inside of ladder；The rotational angle of the locating part limitation rotation latch fitting；The utility model offer is a kind of convenient and efficient, can operate unlock at an arbitrary position and lock the locking device of extension ladder.
Description
Technical field
The utility model is related to a kind of locking systems of extension ladder.
Background technology
Currently, the locking device of extension ladder, which is required to manual operation locking system, could carry out locking or the solution of extension ladder
Lock, locking or unlocked position are fixed position, it is necessary to be designed into the accessible position of people, operation limitation is big.
It is fixed particularly with one end, needs to extend downwards, and needing at any time can above or lower section stacks or stretches
The unlock and locking of extension ladder are realized difficult.
Invention content
The purpose of this utility model is to provide a kind of simple in structure, extension ladder locking system for being conveniently operated, in order to solve
Unlock and locking extension ladder can be operated at an arbitrary position, improve efficiency and convenience.
To achieve the above object, the utility model uses following technical proposal：
A kind of locking system of extension ladder, including：Dead axle, stationary lock part, torsion elements, shifting axle, rotation latch fitting, limit
Part；The cooperation of the ladder one of the dead axle and extension ladder constitutes a fixing piece or relatively rotates part；The stationary lock part and dead axle
Cooperation, is installed on ladder one, is formed and is relatively rotated with ladder one, and stationary lock part is locked on two riding club of ladder；The torsion elements
It is continuously available to one torsion of stationary lock part, stationary lock part is made to keep the locking with two riding club of ladder；The shifting axle will rotate
Latch fitting is connected with stationary lock part, and rotation latch fitting is formed with stationary lock part and is relatively rotated；The rotation latch fitting tail end stretches into ladder
Two insides；The rotational angle of the locating part limitation rotation latch fitting.
The section of the dead axle can be the arbitrary shapes such as round, polygon or irregular shape section, can also have simultaneously
Standby torsion elements function.
The torsion elements can be torsional spring or with dead axle functional unification.
The section of the shifting axle can be the arbitrary shapes such as round, polygon or irregular shape section, also can be simultaneously
Has the function of locating part.
When the rotation latch fitting rotates, it is necessary to can be contacted with two riding club of ladder.
The locating part can be located at any position of locking device.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the schematic diagram under the utility model free state；
Fig. 3 is one state diagram of the utility model locking process；
Fig. 4 is the utility model locking process two-state figure；
Fig. 5 is the utility model locking process three condition figure；
Fig. 6 is one state diagram of the utility model releasing process；
Fig. 7 is the utility model releasing process two-state figure；
Fig. 8 is the utility model releasing process three condition figure；
Fig. 9 is four state diagram of the utility model releasing process；
Figure elements and symbol description：
1-dead axle；2-torsion elements；3-shifting axles；4-locating parts；5-ladders one；6-rotation latch fittings；7-ladders
Two riding clubs；8-stationary lock parts；9-ladders two.
Specific implementation mode
The use of the new type is further described with reference to the accompanying drawings and examples.
As shown in Fig. 2, the relative position of locking system non-working condition.
Locking：As shown in Fig. 3, Fig. 4, Fig. 5, ladder one（5）Rise, locking system is due to two riding club of ladder（7）Resistance
Effect, rotates clockwise；When the stationary lock part on locking system（8）Cross two riding club of ladder（7）Later, due to torsion elements（2）
Drag effect, stationary lock part（8）Rebound counterclockwise, and it is in two riding club of ladder（7）On；Stationary lock part card when cat ladder falls
Only on two riding club of ladder, play the role of locking.
Unlock：As shown in Fig. 6, Fig. 7, Fig. 8, ladder one is moved up（5）, stationary lock part（8）In rotation latch fitting（6）Encounter
Two riding club of ladder（7）Instantaneous value rotates afterwards；Continue to move up ladder one（5）, until rotating latch fitting（6）Cross two riding club of ladder
Until；Stationary lock part（8）Due to torsion elements（2）Backswing that damping action is counterclockwise rotates latch fitting（6）Outside connects with two riding club of ladder
It touches, falls ladder one（5）；Rotate latch fitting（6）Due to two riding club of ladder（7）Drag effect be flipped up.
Work as stationary lock part（8）Pass through two riding club of ladder downwards（7）When, due to rotating latch fitting（6）Effect directly slide into ladder
Below sub two riding clubs（Fig. 9）, reach unlock purpose, final entire locking system restPoses（Fig. 2）.
Examples detailed above is the preferable embodiment of the utility model, but the embodiment of the utility model is not by above-mentioned reality
Apply the limitation of example, the change made under other any Spirit Essences and principle without departing from the utility model, modification, replacement,
Combination simplifies, and should be equivalent substitute mode, is included within the scope of protection of the utility model.
Claims (6)
1. a kind of locking system of extension ladder, it is characterized in that：Including dead axle, stationary lock part, torsion elements, shifting axle, rotation latch fitting,
Locating part；The cooperation of the ladder one of the dead axle and extension ladder constitutes a fixing piece or relatively rotates part；The stationary lock part with
Dead axle coordinates, and is installed on ladder one, is formed and is relatively rotated with ladder one, and stationary lock part is locked on two riding club of ladder；The torsion
Power part is continuously available to one torsion of stationary lock part, and stationary lock part is made to keep the locking with two riding club of ladder；The shifting axle will
Rotation latch fitting is connected with stationary lock part, and rotation latch fitting is formed with stationary lock part and is relatively rotated；The rotation latch fitting tail end stretches into
Two inside of ladder；The rotational angle of the locating part limitation rotation latch fitting.
2. a kind of locking system of extension ladder according to claim 1, it is characterized in that：The section of the dead axle is circle
Shape is provided simultaneously with torsion elements function.
3. a kind of locking system of extension ladder according to claim 1, it is characterized in that：The torsion elements are torsional spring and determine
S function is unified.
4. a kind of locking system of extension ladder according to claim 1, it is characterized in that：The section of the shifting axle is circle
Shape is provided simultaneously with the function of locating part.
5. a kind of locking system of extension ladder according to claim 1, it is characterized in that：When the rotation latch fitting rotates,
It must can be contacted with two riding club of ladder.
6. a kind of locking system of extension ladder according to claim 1, it is characterized in that：The locating part is located at locking dress
Any position set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969774.4U CN207863847U (en) | 2017-08-04 | 2017-08-04 | A kind of locking system of extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969774.4U CN207863847U (en) | 2017-08-04 | 2017-08-04 | A kind of locking system of extension ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207863847U true CN207863847U (en) | 2018-09-14 |
Family
ID=63475164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720969774.4U Active CN207863847U (en) | 2017-08-04 | 2017-08-04 | A kind of locking system of extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207863847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386232A (en) * | 2017-08-04 | 2019-02-26 | 中际联合（天津）科技有限公司 | A kind of locking system of extension ladder |
-
2017
- 2017-08-04 CN CN201720969774.4U patent/CN207863847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386232A (en) * | 2017-08-04 | 2019-02-26 | 中际联合（天津）科技有限公司 | A kind of locking system of extension ladder |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |