CN201065732Y - Extension ladder vertical rod positioning device - Google Patents
Extension ladder vertical rod positioning device Download PDFInfo
- Publication number
- CN201065732Y CN201065732Y CNU200720110623XU CN200720110623U CN201065732Y CN 201065732 Y CN201065732 Y CN 201065732Y CN U200720110623X U CNU200720110623X U CN U200720110623XU CN 200720110623 U CN200720110623 U CN 200720110623U CN 201065732 Y CN201065732 Y CN 201065732Y
- Authority
- CN
- China
- Prior art keywords
- vertical rod
- positioning head
- extremity piece
- positioning
- crosspiece
- 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 - Lifetime
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Abstract
The utility model relates to an upright bar positioning device of an extension ladder, comprising two upright bars (1) which are arranged at the left and right sides symmetrically; a plurality of crosspieces (2) are at interval connected between the upright bars, two annular tail pieces (3) with an upright bar hole (21) each are arranged at each end of each crosspiece, the upright bars are positioned inside the upright bar holes, lateral pin components (5) with control knobs (6) are arranged inside the upright bar holes along the crosspiece connection direction, a positioning part (8) with a positioning head (81) on one end is arranged inside the upright bar hole along the direction vertical to the lateral pin components; a plurality of upright bar grooves fitted with the positioning head are arranged on the upright bar corresponding to the position of the positioning head, a tail piece groove (22) corresponding to the position of positioning head of the upright bar hole, the other end of the positioning piece is connected with a positioning bolt (11) with a reset spring (10); the utility model has the advantages of reasonable structure, simple manufacturing process, and fast and convenient operations.
Description
Technical field
The utility model relates to a kind of terraced field of ascending a height, and particularly relates to a kind of rational in infrastructure, extension ladder vertical rod positioner that manufacture craft is simple and swift and convenient to operate.It is suitable for and need uses at the ascend a height ladder of ascending a height of occasion of various differing heights and various difference.
Background technology
The Chinese patent application that the applicant has authorized number is 200420091638.2 utility model patent " a kind of telescopic ladder ", it includes cross bar and montant, described montant is socketed to form for number joint sleeve pipe telescopically, described cross bar places between relative described two montants, the two ends of described cross bar are provided with extremity piece, and described extremity piece is connected with screw fixings with described montant.Be respectively arranged with telescopic pivot pin at the two ends of every described cross bar, described pivot pin is respectively with to open in sleeve pipe positioning jack corresponding with it suitable.Be equipped with annular adapter sleeve in every joint sleeve pipe upper end, and this adapter sleeve and cross bar link together.
Above-mentioned Chinese patent application number is that the advantage of the utility model patent of 200420091638.2 " a kind of telescopic ladders " is that cross bar is not only stepped on thick stick but also make tie-bar, has prevented falling apart of ladder effectively; And described cross bar is hollow structure, and is in light weight.
Yet it remains in weak point is extremity piece and montant screw fixings, makes the both sides of ladder have more two boss; And screw can be loosening in long-term the use, and perhaps screw can be dismantled looseningly by the people, causes potential safety hazard; Operating aspect is also more time-consuming using.
The utility model content
The purpose of this utility model is exactly in order to solve above-mentioned problems of the prior art, provides a kind of structure and manufacture craft extension ladder vertical rod positioner simple and swift and convenient to operate.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of extension ladder vertical rod positioner, it comprises a left side, the vertical rod of right symmetric arrangement, this left side, be connected with the crosspiece that a plurality of compartment of terrains distribute between the right vertical rod, these crosspiece two ends respectively are provided with the annular extremity piece in a band vertical rod hole, described vertical rod places this vertical rod hole, this vertical rod is that vertical rod is socketed to form mutually with outer vertical rod telescopically in the more piece, described crosspiece closure is provided with the lateral pin assembly of band control knob in the vertical rod hole of described annular extremity piece, the other end of this lateral pin assembly is provided with back-moving spring, this back-moving spring is positioned in the described crosspiece, it is characterized in that: in the vertical rod hole of described annular extremity piece with the vertical direction of described lateral pin assembly on the keeper of an end band positioning head is set; The position that described vertical rod corresponds to this positioning head is provided with a plurality of vertical rod grooves, this positioning head and described vertical rod groove phase configuration.Adopt the keeper of this annular extremity piece and the method for vertical rod groove phase configuration, it is simple and reasonable, and manufacture craft is simple and swift and convenient to operate.
Correspond in the vertical rod hole of described annular extremity piece on the position of described positioning head and can be provided with the extremity piece groove; This extremity piece groove and described positioning head phase configuration; Stretch the positioning function between this vertical rod and this annular extremity piece after the operation to realize described vertical rod.
Described positioning head can be set to square or rectangle; This positioning head preferably is set to square, and the locating effect of square positioning head is better, and makes fairly simple.
Described keeper can be provided with positioning screw hole, and the other end of this keeper connects the operation screw of a band location back-moving spring, and this operation screw is connected with described positioning screw hole.Described operation screw can shed from described annular extremity piece.
When being screwed into this operation screw and under this location action of reset spring, can realizing that described keeper is pressed in the described vertical rod groove, thereby realize that vertical rod stretches the location between back and the crosspiece.
The utility model since adopt be provided with on the annular extremity piece keeper and with vertical rod on the localization method of groove of phase configuration, it is rational in infrastructure, manufacture craft is simple and swift and convenient to operate.
Description of drawings
Fig. 1 is a partial structurtes schematic diagram of the present utility model;
The vertical view of Fig. 2 Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is an extension ladder schematic diagram of the present utility model;
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Fig. 1 to Fig. 4 shows an embodiment of the utility model extension ladder vertical rod positioner, it comprises the vertical rod 1 of left and right symmetric arrangement, be connected with a plurality of crosspieces 2 in band vertical rod hole, two ends 21 between the left and right vertical rod 1, these crosspiece two ends respectively are provided with annular extremity piece 3; One end of this annular extremity piece 3 is provided with vertical rod hole 21, and described vertical rod 1 places this vertical rod hole 21; Described crosspiece 2 compartment of terrains are distributed between the described left and right vertical rod 1, shown in Fig. 1,2.
Crosspiece 2 of the present utility model is connected by an annular extremity piece 3 with vertical rod 1; Vertical rod 1 is connected with annular extremity piece 3, as shown in Figure 2.Be provided with the lateral pin assembly 5 of band control knob 6 in the vertical rod hole 21 of annular extremity piece with crosspiece 2 closures; The other end at lateral pin assembly 5 is provided with back-moving spring 7, and back-moving spring 7 is to be positioned in the described crosspiece 2, and the lateral pin assembly 5 that back-moving spring 7 is used for after operation is stretched in vertical rod resets and the locking vertical rod.
The effect of lateral pin assembly 5 is to bear to have the good rigidity that is connected when crosspiece 2 connects as one with vertical rod 1.
In the vertical rod hole 21 of annular extremity piece with 5 one-tenth vertical direction of lateral pin assembly on the keeper 8 of the square positioning head 81 of an end band is set, as shown in Figure 3; The position that vertical rod 1 corresponds to this square positioning head 81 is provided with a plurality of vertical rod grooves 12, and this vertical rod groove does not illustrate in the drawings.Square positioning head 81 and vertical rod groove phase configuration stretch the location between operation back vertical rod and the crosspiece to realize a plurality of vertical rods.
The position that corresponds to this square positioning head 81, the vertical rod hole 21 of annular extremity piece is provided with extremity piece groove 22 again; This square positioning head 81 and extremity piece groove 22 phase configuration, making can not be in 21 rotation of the vertical rod hole of annular extremity piece with the keeper 8 of square positioning head 81.
This keeper 8 is provided with positioning screw hole, and the other end of this keeper 8 connects the operation screw 11 of a band location back-moving spring 10, and this operation screw 11 is connected with described positioning screw hole; When described vertical rod need be stretched operation, to operate this operation screw 11 and make the square positioning head 81 of described keeper withdraw from outside the described vertical rod groove 12, this vertical rod at this moment just can freely be retractable to needs height.
When operation is stretched in vertical rod of the present utility model, stir control knob 6 earlier and make lateral pin assembly 5 leave described annular extremity piece vertical rod hole 21, promptly break away from vertical rod 1; Meanwhile, operating this operation screw 11 makes the square positioning head 81 of described keeper withdraw from outside the described vertical rod groove, vertical rod and outer vertical rod are when needing highly in the more piece of mutual socket of can stretching then, dialling back control knob 6 again inserts in the described vertical rod hole 21 lateral pin assembly 5 under back-moving spring 7 effects, and when keeper 8 square positioning heads 81 are matched with the vertical rod groove, be screwed into operation screw 11, under the effect of location back-moving spring 10, this moment, keeper 8 square positioning heads 81 can be pressed in this vertical rod groove tightly, thereby realized the location between vertical rod stretching, extension back and the crosspiece.
When folding operation is drawn in vertical rod of the present utility model in, stir control knob 6 earlier and make lateral pin assembly 5 leave described annular extremity piece vertical rod hole 21, promptly break away from vertical rod 1; Meanwhile, operating this operation screw 11 makes the square positioning head 81 of described keeper withdraw from outside the described vertical rod groove, then in the more piece of compressible mutual socket vertical rod and outer vertical rod when drawing folded state in, dialling back control knob 6 again inserts in the described vertical rod hole 21 lateral pin assembly 5 under back-moving spring 7 effects, and when keeper 8 square positioning heads 81 are matched with the vertical rod groove, be screwed into operation screw 11, under the effect of location back-moving spring 10, this moment, keeper 8 square positioning heads 81 can be pressed in this vertical rod groove tightly, thereby realized the location between folding back of vertical rod gathering and the crosspiece.
After vertical rod gathering folding operation of the present utility model is finished, described operation screw 11 need be shed from described annular extremity piece, draw the safety of folding operation in to guarantee described vertical rod.
Positioning action of the present utility model is easy, quick, effective.
Claims (4)
1. extension ladder vertical rod positioner, it comprises a left side, the vertical rod (1) of right symmetric arrangement, this left side, be connected with the crosspiece (2) that a plurality of compartment of terrains distribute between the right vertical rod, these crosspiece two ends respectively are provided with the annular extremity piece (3) in a band vertical rod hole (21), described vertical rod places this vertical rod hole, this vertical rod is that vertical rod is socketed to form mutually with outer vertical rod telescopically in the more piece, described crosspiece closure is provided with the lateral pin assembly (5) of band control knob (6) in the vertical rod hole of described annular extremity piece, the other end of this lateral pin assembly is provided with back-moving spring (7), this back-moving spring is positioned in the described crosspiece, it is characterized in that: in the vertical rod hole (21) of described annular extremity piece with the vertical direction of described lateral pin assembly (5) on the keeper (8) of an end band positioning head (81) is set; The position that described vertical rod (1) corresponds to this positioning head (81) is provided with a plurality of vertical rod grooves (12), this positioning head (81) and described vertical rod groove (12) phase configuration.
2. extension ladder vertical rod positioner according to claim 1 is characterized in that: the position that corresponds to described positioning head (81) in the vertical rod hole (21) of described annular extremity piece is provided with extremity piece groove (22); This extremity piece groove (22) and described positioning head (81) phase configuration.
3. extension ladder vertical rod positioner according to claim 2 is characterized in that: described positioning head (81) is set to square or rectangle.
4. extension ladder vertical rod positioner according to claim 2, it is characterized in that: described keeper (8) is provided with positioning screw hole, the other end of this keeper (8) connects the operation screw (11) of a band location back-moving spring (10), and this operation screw is connected with described positioning screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720110623XU CN201065732Y (en) | 2007-06-13 | 2007-06-13 | Extension ladder vertical rod positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720110623XU CN201065732Y (en) | 2007-06-13 | 2007-06-13 | Extension ladder vertical rod positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201065732Y true CN201065732Y (en) | 2008-05-28 |
Family
ID=39482907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720110623XU Expired - Lifetime CN201065732Y (en) | 2007-06-13 | 2007-06-13 | Extension ladder vertical rod positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201065732Y (en) |
-
2007
- 2007-06-13 CN CNU200720110623XU patent/CN201065732Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NINGBO XINGFU TOOLS CO., LTD. Assignor: Wang Wanxing Contract record no.: 2010330000794 Denomination of utility model: Extension ladder vertical rod positioning device Granted publication date: 20080528 License type: Exclusive License Record date: 20100510 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |
|
| CX01 | Expiry of patent term |