CN201221308Y - Automatic latching mechanism of stairs - Google Patents
Automatic latching mechanism of stairs Download PDFInfo
- Publication number
- CN201221308Y CN201221308Y CNU2008200404397U CN200820040439U CN201221308Y CN 201221308 Y CN201221308 Y CN 201221308Y CN U2008200404397 U CNU2008200404397 U CN U2008200404397U CN 200820040439 U CN200820040439 U CN 200820040439U CN 201221308 Y CN201221308 Y CN 201221308Y
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- CN
- China
- Prior art keywords
- pin
- joint
- joint piece
- snap close
- ladder
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an automatic locking mechanism of a ladder, which comprises a pair of first joint sheets and a pair of second joint sheets. The opposite inner sides between the first joint sheets and the second joint sheets are respectively equipped with a first hinging sheet and a second hinging sheet; the first hinging sheet and the second hinging sheet are respectively provided with a connecting hole and an arc surface which is arranged at the outer end of the hinging sheet with the center of the connecting hole as the circle center; a hinging component is positioned at the connecting hole and hinges the first hinging sheet and the second hinging sheet on the identical side; the arc surface on the first hinging sheet is equipped with a straight ladder lock latch groove and an A-shaped ladder lock latch groove; the second hinging sheet is equipped with an abnormal hole which is provided with a locking function end and a locking withdrawal end; the locking function end and the locking withdrawal end are respectively arranged on the inner side and the outer side of the circle with the arc surface; a lock latch operating rod is positioned between the two second joint sheets; the two ends of the lock latch operating rod are respectively arranged in the abnormal holes of the two second hinging sheets in a sliding way; and a spring is connected between the ends of the lock latch operating rod and the hinging component. The utility model has the advantages of simple operation, security, practicality and good stability.
Description
Technical field
The utility model relates to the automatic latching device of a kind of ladder.
Background technology
Same ladder not only can be used as A type ladder but also can be used as vertical ladder when using, and need connect joint at it latching device is set, make its A type scalariform attitude and vertical ladder state can stablize respectively tighten fixing.Using latching device in the market mainly is to add respectively in both sides, two sections ladder upper ends the iron mechanism of rectangle is installed, and is commonly referred to the padlock sheet.When using ladder, earlier ladder is opened into A type or vertical ladder type, be buckled on the clasp on another section ladder with the padlock sheet then, make it reach the effect of fixed ladder body.This padlock chip architecture has following drawback: though one can reach the snap close effect, very inconvenient during its operation, need make the padlock of two repetitions or the action of uncaging; Two, this mechanism is easy to be out of shape by collision owing to be exposed to the outside of terraced body, makes mechanism to lock or to uncage; Three, mechanism's complexity, processing technology is loaded down with trivial details.
Summary of the invention
The utility model purpose provides a kind of new type auto latching device of easy and simple to handle, safe, practical, good stability.Automatically latching device has made full use of two sections vacant positions that connect on the articular sclerite of ladder, has designed the locking apparatus structure of a hand pulling type; Simple in structure, reliable and stable, easy to operate; No matter in A type scalariform attitude still is the vertical ladder state, as long as draw with have gentle hands light one, the padlock action bars is the energy self-return just, reaches the padlock of both sides or the purpose of uncaging simultaneously.
The technical solution of the utility model is: the automatic latching device of a kind of ladder, comprise a pair of first articular sclerite and a pair of second joint sheet, described first articular sclerite and second joint sheet opposed inside are respectively equipped with first pin-joint piece and second pin-joint piece, described first pin-joint piece and second pin-joint piece are provided with connecting hole and the pin-joint piece outer end is the arc surface in the center of circle with the connecting hole center, articulated elements in the connection hole with first of homonymy, second pin-joint piece is hinged, the arc surface of described first pin-joint piece is provided with a vertical ladder lock buckling groove and at least one A type ladder lock buckling groove, described second pin-joint piece is provided with irregularly-shaped hole, described irregularly-shaped hole has the snap action end and moves back the snap close end, described snap action end and move back the snap close end and lay respectively at the inboard of arc surface place circumference and the outside and snap action end and point to the connecting hole setting; When described vertical ladder lock buckling groove cooperated with the snap action end, described first articular sclerite became in-line to distribute with the second joint sheet; When described A type ladder lock buckling groove cooperates with the snap action end, described first articular sclerite becomes herringbone to distribute with the second joint sheet, be connected with the snap close action bars between the described a pair of second joint sheet, described snap close action bars two ends are slidingly mounted on respectively in the irregularly-shaped hole of two second pin-joint pieces, are connected with spring between described snap close action bars end and the articulated elements.
The further technical scheme of the utility model is: the automatic latching device of a kind of ladder, comprise a pair of first articular sclerite and a pair of second joint sheet, described first articular sclerite and second joint sheet opposed inside are respectively equipped with first pin-joint piece and second pin-joint piece, described first pin-joint piece and second pin-joint piece are provided with connecting hole and the pin-joint piece outer end is the arc surface in the center of circle with the connecting hole center, articulated elements in the connection hole with first of homonymy, second pin-joint piece is hinged, the arc surface of described first pin-joint piece is provided with a vertical ladder lock buckling groove and at least one A type ladder lock buckling groove, described second pin-joint piece is provided with irregularly-shaped hole, described irregularly-shaped hole has the snap action end and moves back the snap close end, described snap action end and move back the snap close end and lay respectively at the inboard of arc surface place circumference and the outside and snap action end and point to the connecting hole setting; When described vertical ladder lock buckling groove cooperated with the snap action end, described first articular sclerite became in-line to distribute with the second joint sheet; When described A type ladder lock buckling groove cooperates with the snap action end, described first articular sclerite becomes herringbone to distribute with the second joint sheet, be connected with the snap close action bars between the described a pair of second joint sheet, described snap close action bars two ends are slidingly mounted on respectively in the irregularly-shaped hole of two second pin-joint pieces, are connected with spring between described snap close action bars end and the articulated elements; Described irregularly-shaped hole is part annulus hole or L shaped hole; Bending is provided with and holds structure in the middle of the described snap close action bars; Described vertical ladder lock buckling groove and A type ladder lock buckling groove are the U-lag of bottom towards connecting hole, the snap action end of described irregularly-shaped hole and U-lag corresponding matching; The outer end that described snap close action bars passes irregularly-shaped hole is fixed with the jump ring of external diameter greater than irregularly-shaped hole hole pin width; Described spring is arranged at the inboard of first pin-joint piece and second pin-joint piece, and spring one end is fixed on the articulated elements, and the other end is fixed on the snap close action bars and is positioned on the end of second joint sheet inboard.
The utility model advantage is:
1. the utility model is simple in structure, has not only saved resource, has reduced cost simultaneously again.
2, the automatic latching device of the utility model is positioned at terraced body inboard, is difficult for being crushed out of shape, and has improved the application life of ladder to a great extent.
3, the automatic latching device of the utility model is easy and simple to handle, has changed the loosening work of original loaded down with trivial details button fully, only needs light zip button action bars, just can accomplish the bales catch pine, thereby really reach purpose fast, convenient and safe, reliable snap close, and is practical.
Description of drawings
Fig. 1 is the structural representation of facing of the utility model specific embodiment;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the structural representation of the utility model specific embodiment second joint sheet;
Fig. 4 is the lateral view of Fig. 3;
Fig. 5 is the structural representation of the another specific embodiment second joint of the utility model sheet;
Fig. 6 is the structural representation of the utility model specific embodiment first articular sclerite;
Fig. 7 is the lateral view of Fig. 6;
Fig. 8 is the structural representation of the utility model specific embodiment snap close action bars.
Wherein: 1 first articular sclerite; 2 second joint sheets; 3 first pin-joint pieces; 4 second pin-joint pieces; 5 articulated elementss; 6 vertical ladder lock buckling grooves; 7 connecting holes; 8 irregularly-shaped holes; 9 snap close action bars; 10 springs; 11A type ladder lock buckling groove; 12 move back the snap close end; 13 snap action ends; 14 hold structure; 15 jump rings; 16 arc surfaces; 17 spring fixed parts.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: to shown in Figure 8, the automatic latching device of a kind of ladder comprises a pair of first articular sclerite 1 and a pair of second joint sheet 2 as Fig. 1, on wherein a pair of first articular sclerite 1 and the two ends that the terraced leg of two couples that a pair of second joint sheet 2 is separately fixed at two sections ladders links to each other.Described first articular sclerite 1 and second joint sheet 2 opposed inside are respectively equipped with first pin-joint piece 3 and second pin-joint piece 4, described first pin-joint piece 3 and second pin-joint piece 4 are provided with connecting hole 7 and the pin-joint piece outer end is the arc surface 16 in the center of circle with connecting hole 7 centers, articulated elements 5 is hinged with first, second pin- joint piece 3,4 of homonymy in connecting hole 7 places, and therefore two sections ladders can be done the folding rotation around articulated elements 5.
The arc surface 16 of described first pin-joint piece 3 is provided with a vertical ladder lock buckling groove 6 and at least one A type ladder lock buckling groove 11, described second pin-joint piece 4 is provided with irregularly-shaped hole 8 near second joint sheet 2 positions, described irregularly-shaped hole 8 has snap action end 13 and moves back snap close end 12, described snap action end 13 and move back snap close end 12 and lay respectively at the inboard of arc surface 16 place circumference and the outside and snap action end 13 and point to connecting holes 7 and be provided with.Described vertical ladder lock buckling groove 6 and A type ladder lock buckling groove 11 are the U-lag of bottom towards connecting hole 7, the snap action end 13 and the U-lag corresponding matching of described irregularly-shaped hole 8.
When two sections ladders rotate relatively around articulated elements 5, make described vertical ladder lock buckling groove 6 and snap action end 13 overlap when cooperating, 2 one-tenth in-lines of described first articular sclerite 1 and second joint sheet distribute, and promptly two sections ladders become the vertical ladder state; When described A type ladder lock buckling groove 11 cooperates with snap action end 13,2 one-tenth herringbones of described first articular sclerite 1 and second joint sheet distribute, promptly two sections ladders become A type scalariform attitude, such A type ladder lock buckling groove 11 can be provided with a plurality of at arc surface 16 diverse location places, be each A type ladder lock buckling groove 11 when cooperating with snap action end 13, two sections ladders become the A type scalariform attitude of different angles.
Be connected with snap close action bars 9 between the described a pair of second joint sheet 2, described snap close action bars 9 two ends are slidingly mounted on respectively in the irregularly-shaped hole 8 of two second pin-joint pieces 4, are connected with spring 10 between described snap close action bars 9 ends and the articulated elements 5.Bending is provided with and holds structure 14 in the middle of the described snap close action bars 9.
Described irregularly-shaped hole 8 is part annulus hole or L shaped hole.As shown in Figure 5, circular arc one end in part annulus hole is that snap action end 13 points to connecting hole 7, and the other end is then for moving back the outer ring that snap close end 12 is positioned at arc surface 16 place circumference; As shown in Figure 3, a L shaped pin in L shaped hole is that snap action end 13 points to connecting hole 7, and another pin is then for moving back the outer ring that snap close end 12 is positioned at arc surface 16 place circumference.The end of snap close action bars 9 is arranged in quadrant annular distance or L shaped hole, when snap action end 13 cooperates with vertical ladder lock buckling groove 6 or 11 coincidences of A type ladder lock buckling groove, should cooperate locking if desired, then pull structure 14 places of shaking hands of snap close action bars 9, make the end of snap close action bars 9 fall into snap action end 13 places, and under the tension of spring 10, firm automatically this place that latches in is understood in its end, makes two sections ladders be fixed into vertical ladder or A type ladder.When needs change the vertical ladder of two sections ladders or A type scalariform attitude, then only need with hand a little the application of force end of snap close action bars 9 pulled out from the lock buckling groove that overlaps and snap action end 13 make it enter to move back in the snap close end 12, finish snap close, just can easily change the state of two sections ladders.
The outer end that described snap close action bars 9 passes irregularly-shaped hole 8 is fixed with the jump ring 15 of external diameter greater than irregularly-shaped hole 8 hole pin width.
Described spring 10 is arranged at the inboard of first pin-joint piece 3 and second pin-joint piece 4, spring 10 1 ends are fixed on the spring fixed part 17 that articulated elements 5 stretches out to the inside, the other end is fixed on snap close action bars 9 and is positioned on the end of second joint sheet 2 inboards, makes snap close action bars 9 ends have the trend towards connecting hole 7 motions.
The utility model is easy and simple to handle, safe, practical, good stability.Automatically latching device has made full use of two sections vacant positions that connect on the articular sclerite of ladder, has designed the locking apparatus structure of a hand pulling type; Simple in structure, reliable and stable, easy to operate; No matter in A type scalariform attitude still is the vertical ladder state, as long as draw with have gentle hands light one, the padlock action bars is the energy self-return just, reaches the padlock of both sides or the purpose of uncaging simultaneously.
Claims (6)
1. automatic latching device of ladder, comprise a pair of first articular sclerite (1) and a pair of second joint sheet (2), it is characterized in that: described first articular sclerite (1) and second joint sheet (2) opposed inside are respectively equipped with first pin-joint piece (3) and second pin-joint piece (4), described first pin-joint piece (3) and second pin-joint piece (4) are provided with connecting hole (7) and the pin-joint piece outer end is the arc surface (16) in the center of circle with connecting hole (7) center, articulated elements (5) is located first of homonymy in connecting hole (7), second pin-joint piece (3,4) hinged, the arc surface (16) of described first pin-joint piece (3) is provided with a vertical ladder lock buckling groove (6) and at least one A type ladder lock buckling groove (11), described second pin-joint piece (4) is provided with irregularly-shaped hole (8), described irregularly-shaped hole (8) has snap action end (13) and moves back snap close end (12), described snap action end (13) and move back snap close end (12) and lay respectively at the inboard of arc surface (16) place circumference and the outside and snap action end (13) and point to connecting hole (7) setting; Described vertical ladder lock buckling groove (6) and snap action end (13) are when cooperating, and described first articular sclerite (1) becomes in-line to distribute with second joint sheet (2); Described A type ladder lock buckling groove (11) and snap action end (13) are when cooperating, described first articular sclerite (1) becomes herringbone to distribute with second joint sheet (2), be connected with snap close action bars (9) between the described a pair of second joint sheet (2), described snap close action bars (9) two ends are slidingly mounted on respectively in the irregularly-shaped hole (8) of two second pin-joint pieces (4), are connected with spring (10) between described snap close action bars (9) end and the articulated elements (5).
2. the automatic latching device of ladder according to claim 1 is characterized in that: described irregularly-shaped hole (8) is part annulus hole or L shaped hole.
3. the automatic latching device of ladder according to claim 1 is characterized in that: bending is provided with and holds structure (14) in the middle of the described snap close action bars (9).
4. the automatic latching device of ladder according to claim 1, it is characterized in that: described vertical ladder lock buckling groove (6) and A type ladder lock buckling groove (11) are the U-lag of bottom towards connecting hole (7), the snap action end (13) of described irregularly-shaped hole (8) and U-lag corresponding matching.
5. the automatic latching device of ladder according to claim 1 is characterized in that: the outer end that described snap close action bars (9) passes irregularly-shaped hole (8) is fixed with the jump ring (15) of external diameter greater than irregularly-shaped hole (8) hole pin width.
6. the automatic latching device of ladder according to claim 1, it is characterized in that: described spring (10) is arranged at the inboard of first pin-joint piece (3) and second pin-joint piece (4), spring (10) one ends are fixed on the articulated elements (5), and the other end is fixed on snap close action bars (9) and is positioned on the inboard end of second joint sheet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200404397U CN201221308Y (en) | 2008-07-08 | 2008-07-08 | Automatic latching mechanism of stairs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200404397U CN201221308Y (en) | 2008-07-08 | 2008-07-08 | Automatic latching mechanism of stairs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221308Y true CN201221308Y (en) | 2009-04-15 |
Family
ID=40574818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200404397U Expired - Fee Related CN201221308Y (en) | 2008-07-08 | 2008-07-08 | Automatic latching mechanism of stairs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221308Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322613A (en) * | 2018-11-27 | 2019-02-12 | 苏州东润梯业有限公司 | A kind of ladder latching device |
| US10344528B2 (en) | 2006-10-25 | 2019-07-09 | Hunter Douglas Inc. | Cord drive for coverings for architectural openings |
-
2008
- 2008-07-08 CN CNU2008200404397U patent/CN201221308Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10344528B2 (en) | 2006-10-25 | 2019-07-09 | Hunter Douglas Inc. | Cord drive for coverings for architectural openings |
| US11111721B2 (en) | 2006-10-25 | 2021-09-07 | Hunter Douglas Inc. | Cord drive for coverings for architectural openings |
| CN109322613A (en) * | 2018-11-27 | 2019-02-12 | 苏州东润梯业有限公司 | A kind of ladder latching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20120708 |