CN207863847U - A kind of locking system of extension ladder - Google Patents

A kind of locking system of extension ladder Download PDF

Info

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.)
Active
Application number
CN201720969774.4U
Other languages
Chinese (zh)
Inventor
王喜军
殷建彬
杨高凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinohit United (tianjin) Technology Co Ltd
Original Assignee
Sinohit United (tianjin) Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sinohit United (tianjin) Technology Co Ltd filed Critical Sinohit United (tianjin) Technology Co Ltd
Priority to CN201720969774.4U priority Critical patent/CN207863847U/en
Application granted granted Critical
Publication of CN207863847U publication Critical patent/CN207863847U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Ladders (AREA)

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

A kind of locking system of extension ladder
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.
CN201720969774.4U 2017-08-04 2017-08-04 A kind of locking system of extension ladder Active CN207863847U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN207863847U (en) A kind of locking system of extension ladder
CN204750434U (en) Folding articular locking unlocking device
CN204186287U (en) A kind of portable multi-function combination ladder
CN109386232A (en) A kind of locking system of extension ladder
CN204729740U (en) A kind of high security valve handle
CN205872024U (en) A brake mechanism that is used for zero turn lawn car
CN205059617U (en) Sleeper upper berth with on turn over locking device
CN207257754U (en) Steering wheel mounting structure and kart
CN204750446U (en) Steering mechanism for sliding board cart
CN209256290U (en) A kind of support holder structure
CN202810359U (en) Door lock lever handle device
CN207177568U (en) Self closing door hinge structure, curtain wall door connection structure and curtain wall door
CN206766252U (en) A kind of scooter steering gear
CN206197568U (en) A kind of children's seat
CN203580699U (en) Children vehicle seat capable of being installed in children stroller
CN205216057U (en) Synthesize training apparatus's pull rod
CN202923755U (en) Head positioning device and motorcycle with head positioning device
CN203239089U (en) Balanced type automatic locking impacting-unlocking-preventing mechanism
CN205036165U (en) Damping formula handle - panel structure
CN203855926U (en) Multifunctional ice shovel
CN203294236U (en) Headstock locating device and motorcycle provided with same
CN204804674U (en) Iron art subassembly can sway
CN203129861U (en) Movable window structure
CN206053619U (en) A kind of automobile door lock offsetting spring structure
CN203472592U (en) Child car seat capable of being installed on child cart

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant