CN1914402A

CN1914402A - Ladder stabiliser

Info

Publication number: CN1914402A
Application number: CNA2005800035300A
Authority: CN
Inventors: 梅尔文·迈克肯兹·斯图尔特
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-26
Filing date: 2005-02-28
Publication date: 2007-02-14
Also published as: JP2007524015A; CA2553422A1; WO2005083223A1; AU2005217665A1; KR20060135746A; NZ549015A

Abstract

A ladder stabiliser (110) for stabilizing a ladder (111) comprising an arm member (120) attachable to the ladder, the arm member including a body (140), a leg (150) and a foot (160); said leg being movable telescopically with respect to the body; said foot being attached adjacent to an end of the leg; and movable with respect to the leg; and a brace (130) attached to the arm member and attachable to the ladder; wherein a pivot is attached to the end of the arm member to pivotally mount the ladder stabiliser to a ladder.

Description

Ladder stabiliser

Technical field

The present invention relates to a kind of ladder stabiliser that is used to make ladder stabilizer.

Background technology

Ladder uses in level, firm surface normally quite safe by the individual.Usually from most of present ladders, when the user climbed ladder in the plane, pin enough made ladder keep in position.

Yet when the surface for the time that tilt and/or soft, will have some difficulties and produce.User's ladder stand period of the day from 11 p.m. to 1 a.m influences the stability of ladder usually, and ladder and user are fallen down.Therefore on that tilt or soft surface, need hold up ladder by other people.

Need other people holding up ladder in order to overcome, ladder stabiliser is designed to auxiliary ladder, prevents that it from falling down in use.Such ladder stabiliser is disclosed in the european patent application 172284.This ladder stabiliser is worked in most of environment well, because the leg of stabilizer can regulate with respect to the munnion on the ladder, to be adapted to different inclined surfaces.

Yet when hindering the ladder leg stretching, extension as obstructions such as walls, disclosed ladder stabiliser may not provide enough ladder stabilizers in the european patent application 172284.In this case, ladder leg will almost maybe can not provide stability for ladder.In addition, the number of parts that is used to make ladder stabiliser is more, makes ladder stabiliser manufacturing cost height, and is difficult to be connected on the ladder.

Similar ladder stabiliser is disclosed in United States Patent (USP) 5551529, United States Patent (USP) 5154257, United States Patent (USP) 4807720, Canadian patent application 2281209 and international publication number WO02/059446.All these ladder stabilisers all have tensile leg.Yet, all these ladder stabilisers all the manufacturing cost height, can not sidepiece fully extend and/or be difficult to the transportation.

Goal of the invention

The objective of the invention is to overcome or reduce one or more above-mentioned shortcomings or offer the useful or commercial selection of customer.

Summary of the invention

Although have only one or a lot of embodiments are arranged not is necessary, in an embodiment of the invention, be used to make the ladder stabiliser of ladder stabilizer to comprise:

Be connected to the arm member on the ladder, this arm member comprises main body, leg and pin;

Described leg moves with respect to main body is scalable;

Described pin is connected on the end of adjacent leg, and removable with respect to leg; With

Be connected to the support on the arm member, and can be connected with ladder;

Wherein, be pivotally connected on the end of arm member, be used for rotatably ladder stabiliser being installed to ladder.

Arm member can use hinge to be connected on the ladder rotatably.Hinge can be connected to adjacent body end.

Leg can be positioned at main body.In case the arrival desired locations just can be fixed to leg on the main body.Can use and realize this purpose as securing members such as wing bolt or spring biased pins.

Pin can move with respect to the leg rotation.Pin can be included in the threaded rod that rotates in the nut.Nut can be connected on the plate.

Alternatively, pin is rotatably connected on the end of leg.

Support can be connected on the main body.Support is rotatably connected on the ladder.Form the lug of part main body, be used to receive the pin that is positioned on the support.

Support is scalable, with the angle with respect to ladder regulating arm parts.

Description of drawings

Only by way of example, with reference to the accompanying drawings embodiments of the present invention are described, in the accompanying drawing:

Fig. 1 is connected to front view on the munnion of ladder according to two ladder stabilisers of the first embodiment of the present invention;

Fig. 2 is the exploded perspective view of the ladder stabiliser shown in Fig. 1;

Fig. 3 is that two ladder stabilisers are connected to front view on the munnion of ladder according to a second embodiment of the present invention;

Fig. 4 is the exploded perspective view of the ladder stabiliser shown in Fig. 1;

Fig. 5 is the lateral view of hinge that ladder stabiliser is connected with ladder;

Fig. 6 is the stereogram that is connected to the pin of leg; With

Fig. 7 is the stereogram of alternative support.

The specific embodiment

Ladder stabiliser 10 shown in Fig. 1 and 2 is used for ladder 11.Ladder stabiliser 10 comprises arm member 20 and support 30.Arm member 20 has main body 40, leg 50 and pin 60.

Main body 40 uses rectangular hollow tube 41 to make.Screwed hole 42 is positioned at the bottom near hollow tube, is used for placing wing bolt 43.Lug 44 is positioned at the sidepiece of hollow tube 41, so that support 30 is connected on the main body 40.Hinge 45 is connected to the top ends of pipe 41, and is used to main body 40 is connected on the munnion 12 of ladder 11.The rivet (not shown) is used for hinge 45 is connected to the munnion 12 of ladder.

Leg 50 is also made by rectangular hollow tube 51.Pipe 51 is sized to and manages 41 and is complementary, to form main body 40.This make leg 50 can be in main body 40 telescopic slide.

Array of spaced screwed hole 52 is positioned at along on the length direction of pipe 51.When leg 50 slided in main body 40, the hole 52 of leg 50 was aimed at the hole 42 on being positioned at main body 40.Wing bolt 43 passes the

hole

42,52 of aligning, thereby with respect to main body 40 that leg 50 is fixing safely.

Pin 60 comprises the U-shaped plate 61 that is connected with nut 62.Threaded rod 63 passes nut 62.Base 64 is connected to the end of threaded rod 63, and rubber seat retainer 65 is connected on the base 64.The rotation of bar 63 makes base shift near according to the direction of rotation of bar 63 or away from U-shaped plate 61.Pin 60 is connected on the leg by the dog screw that passes the

hole

66,53 in U-shaped plate and the leg.

Support 30 is made by flat metal bar 31.Pin 32 is positioned at an end of support, thereby pin can be positioned in the lug 44 of main body 40.Support 30 uses suitable fasteners such as screw, bolt or similar item to be connected on the munnion 12 of ladder 11.

In the use, ladder stabiliser 10 uses in the following manner.In case ladder 11 is arranged in its desired locations, the pin 32 that will be positioned on the support 30 passes lug 44.Then wing bolt 43 unloads from

hole

43,52, leg 50 is extended up to pin from main body 40 touch ground.When the pin kiss the earth, if the hole in hole 52 in the leg 50 and the main body 40 42 is not aimed at, then rotate threaded rod 63 and make its length that elongates or shortens arm member, thereby

hole

42,52 is aimed at.Then again wing bolt 43 is put into the hole, leg is fixed with respect to main body.

Fig. 3 and 4 has shown another embodiment of the ladder stabiliser 110 that is connected on the ladder 111.Ladder stabiliser 110 also has arm member 120 and support 130.Arm member 120 also has main body 140, leg 150 and pin 160.

Main body 140 uses hollow tube 141 to make.Spring biased pin 142 is arranged in hollow stem 143, extends upward from main body 141.The direction biasing of pin 142 in extending to hollow tube 141.Lug 144 is positioned at the side of hollow tube 141, so that support 130 is connected with main body 40.Hinge 145 is connected on the top ends of hollow tube 141, and is used to main body 140 is connected on the munnion 112 of ladder 11.

Fig. 5 shows hinge 145 in greater detail.Hinge 145 comprises bolt 146 and joint pin 147.Bolt 146 is connected with the munnion 112 of ladder 111.Joint pin 147 extends through hollow tube 141, and bolt 146 makes arm member 120 rotate with respect to ladder 111.Locking device 148 passes joint pin 146, in case joint pin 146 is lost.Chain 149 is connected with locking device 148 with hollow tube 141, and the auxiliary joint pin 147 that prevents is lost.

Leg 150 is also made by rectangular hollow tube 151.Pipe 151 pipes 141 that are sized to and form main body 140 are complementary.This just make leg 150 can be in main body 140 telescopic slide.

Array of spaced hole 152 is positioned at along on the length direction of pipe 151.When leg 150 slided in main body 140, the hole 152 of leg 50 was aimed at the pin 142 on being positioned at main body 140.Pin 142 extends through

hollow tube

141 and 151, thereby is positioned in the independent hole 152, and is relative to each other fixing will manage 141 and 151.

The pin 160 that is shown in more detail among Fig. 6 is formed by the plate 161 that has two upwardly extending wings 162.Projection 153 is positioned in the middle of the wing 162, and is connected with the end of leg.Bolt 163 extends through projection 153, and the wing 162 rotatably is installed to pin 160 on the leg 150.

Support 130 is with described above identical, and made by flat bonding jumper 131.Connecting pin 132 is positioned at an end of support, so that connecting pin 132 is positioned in the lug 144 of main body 140.Support 130 uses securing member such as screw, bolt or similar item to be connected with the munnion 12 of ladder 11.

In the use, ladder stabiliser 110 uses in the mode similar to top description.In case ladder 111 is positioned at its desired locations, the connecting pin 132 that will be arranged on the support 30 is positioned at lug 144.With upwards pulling of spring biased pin 142,, touch ground up to pin 160 so that leg 150 moves from main body 140 telescopicallies.In case pin touches ground, spring loaded pin is discharged, and leg 150 is moved with respect to main body 140, engage with hole 152 up to spring biased pin.

Alternate stand 200 shown in Figure 7 can be used with any of the foregoing description.Support 200 comprises outer main body 210 and interior main body 220.Interior main body 220 is installed in the outer main body, and can move back and forth with respect to outer main body 210.Spring biased pin 230 is arranged in hollow stem 240, and described hollow stem 240 extends upward from outer main body 250.The direction biasing of pin 230 main body 210 outside pin 230 extends into.

Interior main body 220 has the hole 260 that main body 220 is extended in a series of edges.When interior main body 220 is slided with respect to outer main body 210, the hole 260 of interior main body 220 be arranged to be positioned at outer main body 210 on pin 230 aim at.Pin 230 extends through outer main body 210 and interior main body 220, is positioned in the independent hole 260, so that outer main body 210 and interior main body 220 is relative to each other fixing.

The same with the support 130 of front, connecting pin 270 is positioned at an end of support 260, so that connecting pin 132 is positioned in the lug 44 or 144 of main body 40 or 140.Support 270 uses suitable fasteners such as screw, bolt or similar item rotatably to be connected with the munnion of ladder.

Because the expansion performance of support 200, alternate stand 200 can make arm member become various angle with respect to ladder.Therefore, on uneven ground, if desired, by increasing the angle between ladder and the ladder stabiliser, ladder stabiliser can provide bigger lateral force.

The advantage that above-mentioned ladder stabiliser has is for being easy to make, be easy to be connected with ladder and ladder stabiliser is easy to the location use.In addition, ladder stabiliser is easy to transportation, even when still being connected on the ladder.

Should recognize, can to the above embodiments make various other changes and improvements and do not break away from the spirit or scope of the present invention.

Claims

1. ladder stabiliser that is used for making ladder stabilizer comprises:

Can be connected to the arm member on the ladder, arm member comprises main body, leg and pin;

Described leg can be with respect to the main body telescopic moving;

Described pin is connected to the end of adjacent leg; And can move with respect to leg; With

Be connected to the support on the arm member, and can be connected on the ladder;

Wherein, be pivotally connected to the end of arm member, rotatably ladder stabiliser is installed on the ladder.

2. ladder stabiliser according to claim 1, wherein arm member can use hinge to be rotatably connected on the ladder.

3. ladder stabiliser according to claim 2, wherein hinge can be connected to adjacent body end.

4. ladder stabiliser according to claim 1, wherein leg can be positioned at main body.

5. ladder stabiliser according to claim 1, wherein leg can use securing member to be installed on the main body.

6. ladder stabiliser according to claim 1, wherein pin can rotatably move with respect to leg.

7. ladder stabiliser according to claim 6, wherein pin can be included in the threaded rod that rotates in the nut.

8. ladder stabiliser according to claim 1, wherein pin is rotatably connected to the leg end.

9. ladder stabiliser according to claim 1, its medium-height trestle can be connected on the main body.

10. ladder stabiliser according to claim 1, its medium-height trestle is rotatably connected on the ladder.

11. ladder stabiliser according to claim 1, the lug that wherein forms the part main body receives the pin that is positioned on the support.

12. ladder stabiliser according to claim 1, its medium-height trestle is telescopic.