CN2830626Y - Self-locking safety A-ladder - Google Patents
Self-locking safety A-ladder Download PDFInfo
- Publication number
- CN2830626Y CN2830626Y CN 200520063300 CN200520063300U CN2830626Y CN 2830626 Y CN2830626 Y CN 2830626Y CN 200520063300 CN200520063300 CN 200520063300 CN 200520063300 U CN200520063300 U CN 200520063300U CN 2830626 Y CN2830626 Y CN 2830626Y
- Authority
- CN
- China
- Prior art keywords
- ladder
- pedal
- wing federation
- terraced bar
- terraced
- 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 relates to an item in daily use, which provides a self-locking safety A-ladder which is formed by connecting two straight ladder bodies by a connecting piece. The straight ladder bodies are composed of two ladder rods respectively connected with a plurality of pedals at intervals, and the connecting piece is formed by connecting a left connecting pair and a right connecting pair by a hinge. The utility model is characterized in that the left connecting pair and the right connecting pair are respectively provided with mutually symmetrical locking holes presenting the shape of the inverse Chinese character 'chang' and locking holes presenting the shape of the Chinese character 'chang'. A locking shaft passes through the locking holes of the left connecting pair and the right connecting pair, both ends of the locking shaft are provided with big head caps, plastic bushes are arranged among the pedals and the ladder rods of the straight ladder bodies, and the plastic bushes are provided with a ladder rod groove. The utility model has the characteristics of high safety coefficient, light weight, high intensity, beautiful appearance, durability, easy use, etc.
Description
Technical field
The utility model relates to a kind of daily living article, especially double ladder.
Background technology
In daily life, people come " increasing " by the herringbone ladder, to carry out " high-altitude " operation: get eminence article, installation/more change the bulb, sanitation and hygiene or the like.Common on the market aluminium double ladder has characteristics in light weight, simple in structure and easy to use, and its deficiency is: 1, pedal and terraced bar are directly to be rigidly connected by rivet, after using a period of time, easy deformation is particularly at the pedal place, form easily and sink, have potential safety hazard; 2, two vertical ladder bodies only connect by the loose-leaf that is installed on the top pedal; Fastness is not enough; 3, the restriction of opening of two vertical ladders is to realize by the simple and easy folding formula aluminium flake of the connection two vertical ladder bars in the middle part of being installed in, and it is convenient inadequately to use; 4, vertical ladder body and pedal are the seamed edge corner angle, attractive in appearance inadequately and easy scratch skin or scrape the damage clothes.So existing double ladder haves much room for improvement.
Summary of the invention
The purpose of this utility model is in order to solve the problem that existing double ladder exists, and designs a kind of easy to use, safe double ladder with auto-lock function, good looking appearance.
The utility model adopts following technical scheme:
A kind of self locking safety double ladder, be formed by connecting by connector by two vertical ladder bodies, described vertical ladder body is to be connected with the hard work pedal at interval respectively by two terraced bars to constitute, connector is to be connected through the hinge by the secondary and right connection pair of Left-wing Federation's knot to form, connector is located at the upper end of two vertical ladder bodies, can make two vertical ladder bodies open certain angle by connector becomes user mode or folds to be folded state, it is characterized in that: Left-wing Federation's knot pair is provided with " I " font lock hole; the right pair that connects is provided with " factory " font lock hole of tying the parafacies symmetry with the Left-wing Federation; a lock shaft is passed secondary " I " font lock hole of Left-wing Federation's knot and secondary " factory " the font lock hole of right side connection, and the two ends of lock shaft are provided with big head cap.
Be provided with plastic bushing between the pedal of vertical ladder body and the terraced bar, plastic sheath is provided with terraced bar groove.
As optimization, secondary, the right connection pair of Left-wing Federation's knot is connected with top pedal respectively.
As optimization, there are two pliable and tough safety belts to be connected in the ladder bar place, middle below of two vertical ladder bodies, the length of safety belt can be opened into user mode with two vertical ladders and be advisable.
As optimization, pedal and terraced bar are aluminium alloy extrusions, and plastic bushing is the engineering plastics manufacturing, and the cross section of pedal is hollow del, its three limit rounding ofves, and the pedal tread of top is provided with anti-skidding striped.
As optimization, terraced bar is hollow quadrangle, the four edges rounding off.
As further optimization, the outside of terraced bar is provided with decorative groove, inserts ornamental strip in the decorative groove.
The utility model has following beneficial effect:
1. safe, two vertical ladder bodies are located by connecting by hinge, lock shaft, safety belt three, just in case there is wherein a kind of connection to lose efficacy, still can keep the double ladder trouble free service.
2. in light weight and intensity is high, durable and good looking appearance.Pedal and terraced bar are hollow metalwork, and be not yielding, and the secondary and right connection pair of Left-wing Federation's knot is metalwork project to outsource plastics, and intensity is big, and pedal is connected with terraced bar by plastic bushing, and is firmly attractive in appearance.
3. easy to use, as long as form herringbone with pulling out two vertical ladder bodies, this moment, lock shaft was slipped to the lock hole bottom automatically under action of gravity, entered the state of automatically locking during use; During collection, the lock shaft that holds in the palm, lock shaft rise and automatically terminate lock-out state in the top of lock hole, and two vertical ladder bodies are closed up, and form folded state.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 ties secondary schematic diagram for the Left-wing Federation;
Fig. 3 is the right secondary schematic diagram that connects;
Fig. 4 is in the view that unlocks when folding for left and right connection is secondary;
Fig. 5 is the lock-out state schematic diagram when to be that left and right connection is secondary use;
Fig. 6 is plastic bushing and terraced bar and pedal connection diagram.
Fig. 7 is the utility model folded state diagram.
The specific embodiment
A kind of self locking safety double ladder as shown in Figure 1, be formed by connecting by the connector of two vertical ladder bodies 5 by end mounted thereto, described vertical ladder body 5 is to be connected with hard work pedal 53 at interval respectively by two terraced bars 51 to constitute, the structure of connector such as Fig. 2～shown in Figure 5, it is by Left-wing Federation knot secondary 1 and rightly connect secondary 2 and be formed by connecting by hinge 3, be about to hinge 3 pass Left-wing Federation's knot secondary 1 locating hole 11 and and right secondary 2 the locating hole 12 of connecting make and be in the hinge connection, Left-wing Federation knot secondary 1 is provided with “ I " font lock hole 12; rightly connect secondary 2 and be provided with " factory " font lock hole 22 symmetrical with Left-wing Federation knot secondary 1; lock shaft 4 is passed the Left-wing Federation and tied secondary 1 De “ I " font lock hole 12 and right secondary 2 " factory " the font lock hole 22 that connects, be provided with the diameter plastic cap bigger than lock hole takes out from lock hole to prevent lock shaft 4 at the two ends of lock shaft 4, Left-wing Federation knot secondary 1 is provided with and is used for the installing hole 13 that is connected with terraced bar 51, top that should installing hole 13 is provided with terraced rod end seals piece 14, right connect secondary 2 and be provided with and be used for the installing hole 23 that is connected with terraced bar 51, top that should installing hole 23 is provided with terraced rod end seals piece 24, connector is connected in the upper end of vertical ladder body 5 by installing hole 13 and installing hole 23.
Be provided with plastic bushing 52 between the pedal 53 of vertical ladder body 5 and the terraced bar 51, plastic sheath 52 is provided with terraced bar groove 55 (their connection such as Fig. 6), and plastic sheath 52 has the effect that enhancing pedal 53 is connected with terraced bar 51.
There are two pliable and tough safety belts 7 to be connected in place, below in the terraced bar 51 of two vertical ladder bodies 5; the length of safety belt 7 is so that two vertical ladder bodies 5 are opened into user mode is advisable; safety belt 7 does not influence opening and folding of two vertical ladder bodies 5, and safety belt 7 has the dual security protection effect, strengthens the sense of security.
The outside ladder bar 51 of vertical ladder body 5 vertically is provided with decorative groove 56, and pedal 53 is installed by these decorative groove 56 usefulness screws with terraced bar 51 and is connected, and inserts ornamental strip 54 in the decorative groove 56, works to block the connecting screw head and beautifies terraced body.
Pedal 53 in this example and terraced bar 51 are aluminium alloy extrusions, plastic bushing 52 is the engineering plastics manufacturing, and the cross section of pedal 53 is hollow del, three limit rounding ofves, the tread of its top is provided with anti-skidding striped, and terraced bar 51 is hollow quadrangle, four edges rounding off.
The Left-wing Federation's knot secondary 1 and the right connection secondary 2 of connector are connected with top pedal 6 respectively.
In terraced bar 51 and contact position, ground, be provided with wedge shape plastic mattress pin 55, what make terraced body 5 and ground connects safety and reliability, anti-skidding.
During use, two vertical ladder bodies 5 are opened certain angle become user mode (as Fig. 1 and Fig. 5), at this moment lock shaft 4 is slipped to the lock hole bottom automatically under self-gravity action, enters the state of automatically locking.
When folding, the lock shaft 4 that holds in the palm rises in the top of lock hole lock shaft 4, and connector automatically terminates lock-out state (as Fig. 4), make two vertical ladder bodies close up (slightly firmly mention whole ladder allow lower end ladder body freely close up get final product), one-tenth folded state (as Fig. 7) simultaneously.
Claims (6)
1, a kind of self locking safety double ladder, be formed by connecting by connector by two vertical ladder bodies (5), described vertical ladder body (5) is to be connected with hard work pedal (53) respectively at interval by two terraced bars (51) to constitute, connector is to be formed by connecting by hinge (3) by Left-wing Federation's knot secondary (1) and the right pair (2) that connects, connector is located at the upper end of vertical ladder body (5), can make two vertical ladder bodies (5) open certain angle by connector becomes user mode or folds to be folded state, it is characterized in that: Left-wing Federation's knot secondary (1) is provided with " ㄟ " font lock hole (12), the right pair (2) that connects is provided with the lock hole (22) of tying secondary (1) symmetrical " factory " font with the Left-wing Federation, one lock shaft (4) is passed the lock hole (12) and the right lock hole (22) that connects secondary (2) of Left-wing Federation's knot secondary (1), and the two ends of this lock shaft (4) are provided with big head cap.
2, self locking safety double ladder according to claim 1 is characterized in that: be provided with plastic bushing (52) between the pedal (53) of vertical ladder body (5) and the terraced bar (51), plastic bushing (52) is provided with terraced bar groove (55).
3, self locking safety double ladder according to claim 1 and 2 is characterized in that: the middle below ladder bar (51) that has two pliable and tough safety belts (7) to be connected in two vertical ladder bodies (5) is located, and the length of safety belt (7) is so that two vertical ladders can be opened into user mode is advisable.
4, according to claim 1 or 2 or 3 described self locking safety double ladders, it is characterized in that: Left-wing Federation's knot secondary (1), the right pair (2) that connects are connected with top pedal (6) respectively.
5, according to described any self locking safety double ladder of claim 1 to 4, it is characterized in that: the outside of terraced bar (51) is provided with decorative groove (56), inserts ornamental strip (54) in the decorative groove (56).
6, according to described any self locking safety double ladder of claim 1 to 5, it is characterized in that: pedal (53) is an aluminium alloy extrusions with terraced bar (51), plastic bushing (52) is the engineering plastics manufacturing, the cross section of pedal (53) is hollow del, the limit rounding off of pedal (53), the tread of top is provided with anti-skidding striped, and terraced bar (51) is hollow quadrangle, the limit rounding off of terraced bar (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520063300 CN2830626Y (en) | 2005-08-22 | 2005-08-22 | Self-locking safety A-ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520063300 CN2830626Y (en) | 2005-08-22 | 2005-08-22 | Self-locking safety A-ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2830626Y true CN2830626Y (en) | 2006-10-25 |
Family
ID=37135552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520063300 Expired - Fee Related CN2830626Y (en) | 2005-08-22 | 2005-08-22 | Self-locking safety A-ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2830626Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392628B (en) * | 2008-11-04 | 2011-01-12 | 来旭 | Side-tilting prevention trestle ladder |
| CN110485910A (en) * | 2018-05-15 | 2019-11-22 | 孙守义 | The ladder that can be laterally extended |
-
2005
- 2005-08-22 CN CN 200520063300 patent/CN2830626Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392628B (en) * | 2008-11-04 | 2011-01-12 | 来旭 | Side-tilting prevention trestle ladder |
| CN110485910A (en) * | 2018-05-15 | 2019-11-22 | 孙守义 | The ladder that can be laterally extended |
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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: 20061025 Termination date: 20090922 |