CN209457848U - Ladder safety device - Google Patents

Abstract

The utility model relates to a kind of ladder safety device, the ladder includes folding ladder and pedal, folds ladder and corresponds to pedal equipped with cross bar, and pedal is equipped with safety device, when folding ladder expansion, the safety device and cross bar snapping of pedal；The safety device includes auxiliary catch ontology and elastic component, and auxiliary catch ontology, which slides laterally, to be arranged on pedal, and elastic component is arranged between auxiliary catch ontology and pedal, and auxiliary catch ontology is equipped with coupler body, and coupler body is buckled in below cross bar.The auxiliary catch ontology of such ladder safety device tramples in-plane along pedal and moves forward and backward realization lock and unlock, and to prevent auxiliary catch accidental unlocking in use process, sealed rear latched position makes pedal allow movable gap smaller.

Description

Ladder safety device

Technical field

The utility model relates to a kind of ladder, especially a kind of ladder safety device.

Background technique

Tool of the ladder as less important work of ascending a height prevents ladder from surprisingly folding as ladder safety in use An important feature.Auxiliary catch also needs to solve to prevent as the avatar for preventing ladder from folding, auxiliary catch in use process The problem of accidental unlocking.

For the different classes of auxiliary catch of existing ladder in the market, by the auxiliary catch of gravity folding class, there are inertia, in ladder The case where son folding excessive velocities pre-exist accidental unlocking or it is sealed not on problem, and auxiliary catch is easy and the position that connect Collision issues the sound；Using the auxiliary catch of torsional spring rotation class, assembling process is difficult, steps down in insurance and hooks that there are accidental unlocking, shadows The problems such as ringing ladder outer dimension.

Utility model content

The purpose of this utility model is to provide a kind of ladder safety devices simple and reasonable for structure, safe and reliable.

Purpose of the utility model is realized as follows:

A kind of ladder safety device, the ladder include folding ladder and pedal, fold ladder and correspond to pedal equipped with cross Bar, pedal are equipped with safety device, when folding ladder expansion, the safety device and cross bar snapping of pedal；It is characterized by: described Safety device includes auxiliary catch ontology and elastic component, and auxiliary catch ontology, which slides laterally, to be arranged on pedal, and elastic component setting is being protected Between dangerous hook ontology and pedal, auxiliary catch ontology is equipped with coupler body, and coupler body is buckled in below cross bar.Such ladder is passed through with safety device Auxiliary catch ontology slides laterally realization unlock and locking, passes through the rotation of auxiliary catch ontology like that rather than the prior art and realizes unlock And locking；The utility model cannot lock when more effectively preventing ladder from using, and effectively ladder use process be avoided to miss because in The phenomenon that stepping on safety device and unlocking folding generation.

The purpose of this utility model can also be solved using following technical measures:

As more specific scheme, the coupler body is triangular in shape, and coupler body top surface is that laterally setting, coupler body inclined bottom surface are set It sets, coupler body top surface and cross bar bottom gap cooperate.Since, there are gap, there is no connect the two between coupler body top surface and cross bar bottom Touch wiping, it is ensured that coupler body can be swimmingly moved to below cross bar, to limit auxiliary catch ontology and pedal connected to it up Overturning, avoids the case where folding in ladder use process.The coupler body of auxiliary catch ontology is locked together at cross bar, and cross bar and hook The free gap at the sealed place of body is as small as possible under the premise of not influencing auxiliary catch locking function.The setting of coupler body inclined bottom surface, Inclined-plane has certain guiding function, when coupler body bottom surface and beam contact, so that coupler body and the auxiliary catch ontology being attached thereto It moving forward, after cross bar is left in coupler body bottom surface, coupler body resets under elastic component effect to be moved backward, it is buckled in below cross bar, from And it realizes self-locking.

As further embodiment, the auxiliary catch ontology includes sliding block, hook arm and the coupler body, and hook arm is arranged in sliding block Bottom, coupler body are arranged in hook arm lower end；Pedal is equipped with groove, and sliding block, which slides back and forth, to be arranged on groove, and hook arm lower end is stretched out Below groove.

As further embodiment, the safety device further includes anti-loosing screw, and groove wall body is equipped with the length that front and back is directed toward Shape hole, anti-loosing screw pass through elongated hole on the outside of groove and connect with sliding block.Sliding block and groove are not fixed on one by anti-loosing screw It rises, only avoids sliding block from loosening in groove sliding block limit.Anti-loosing screw moves within the scope of elongated hole, and auxiliary catch is made to exist It is moved in the stroke range of setting along the front-rear direction that pedal tramples plane.

As further embodiment, the groove is arranged at the back edge of pedal top surface, groove rear end and open top, Groove floor is supporting plate, and supporting plate is equipped with hook arm relief hole, and the hook arm extends to below groove through hook arm relief hole.

As further embodiment, the slip front is equipped with boss, and boss top surface is lower than sliding block top surface, groove front end pair Boss is answered to be equipped with jack, boss is inserted into jack, up tilts to prevent limited slip block.

As further embodiment, the supporting plate is equipped with baffle, is equipped with elastic component prelocalization, the sliding block on rear side of baffle Bottom is equipped with cavity, positions after being equipped with elastic component on rear side of cavity, and the elastic component is spring, spring rear and front end respectively with elasticity Located adjacent after part prelocalization and elastic component.Spring makes sliding block have the trend that moves backward so that the coupler body moment keep to The movement tendency of cross bar direction snapping.Positioning before and after elastic component, the mechanism for preventing spring element from deviating avoid auxiliary catch elastic force from failing The case where.Spring is accommodated in inside the cavity of sliding block, on the one hand protects spring, does not on the other hand influence the appearance of ladder, and hold Easily assembly.

As further embodiment, the baffle top surface is equipped with the first guide groove, and slider bottom is equipped with the first guide plate, the Guiding cooperates before and after one guide plate and the first guide groove.On the one hand the rigidity of sliding block can be improved in first guide plate, on the other hand, First guide plate and the first guide groove cooperate, and improve the accuracy that sliding block slides back and forth.

As further embodiment, the second guide groove is equipped at left and right sides of the supporting plate, slider bottom is equipped with the second guiding Guiding cooperates before and after plate, the second guide plate and the second guide groove.The effect generated with the first guide plate and the cooperation of the first guide groove It is identical.

As further embodiment, the folding ladder includes front foot frame, rear leg, pedal rod and foot prop connecting rod, after Foot prop upper end and front foot frame are hinged, and the cross bar is arranged on rear leg top；The pedal include one piece of top pedal and one piece with On lower pedal, push up pedal and lower pedal and arrange from top to bottom, push up pedal front end and lower pedal front end is hinged with front foot frame respectively； Pedal rod is hinged with top pedal and lower pedal respectively, and foot prop connecting rod two end is hinged with top pedal and rear leg respectively.

The beneficial effects of the utility model are as follows:

(1) the auxiliary catch ontology of such ladder safety device along pedal trample in-plane move forward and backward realization locking and Unlock, to prevent auxiliary catch accidental unlocking in use process, sealed rear latched position makes pedal allow movable gap smaller.

(2) there is no abnormal sound in such ladder safety device use process, do not influence ladder outer dimension, and assemble letter It is single.

(3) such ladder can effectively be prevented with safety device compared with existing ladder manufactuerer's output insurance hook currently on the market The only generation that auxiliary catch surprisingly folds does not influence the overall dimensions of ladder, and auxiliary catch will not be with interconnecting piece during carrying ladder Position collides, and sealed back pedal can be small with movable gap, and user is made to have better ladder usage experience.

(4) such ladder is square with safety device, the space for occupying pedal is smaller, and auxiliary catch is stepped on perpendicular to pedal The size for stepping on in-plane does not influence the outer dimension of ladder.

Detailed description of the invention

Fig. 1 is the utility model top pedal and safety device decomposition texture schematic diagram.

Fig. 2 is structural schematic diagram after the utility model top pedal and safety device assembly.

Fig. 3 is that pedal overlooking structure diagram is pushed up in the utility model.

Fig. 4 is that an angled arrangement schematic diagram at pedal groove is pushed up in the utility model.

Fig. 5 is auxiliary catch body construction schematic diagram in the utility model.

Fig. 6 is enlarged structure schematic diagram at A in Fig. 5.

Fig. 7 is the ladder unfolded state structural schematic diagram of the utility model.

Fig. 8 is enlarged structure schematic diagram at B in this Fig. 7.

Fig. 9 is schematic cross-sectional view after the top pedal, safety device and cross bar of the utility model cooperate.

Figure 10 is the ladder collapses status architecture schematic diagram of the utility model.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and embodiments.

Referring to shown in Fig. 1 to Figure 10, a kind of ladder safety device, the ladder includes folding ladder and pedal, is folded Ladder corresponds to pedal equipped with cross bar 9, and pedal is equipped with safety device, when folding ladder expansion, the safety device and cross bar 9 of pedal Snapping；The safety device includes auxiliary catch ontology 2 and elastic component, and auxiliary catch ontology 2, which slides laterally, to be arranged on pedal, elasticity Part is arranged between auxiliary catch ontology 2 and pedal, and auxiliary catch ontology 2 is equipped with coupler body 28, and coupler body 28 is buckled in 9 lower section of cross bar.

The coupler body 28 is triangular in shape, and 28 top surface of coupler body is laterally setting, the setting of 28 inclined bottom surface of coupler body, 28 top surface of coupler body With the cooperation of 9 bottom gap of cross bar (gap e as shown in Figure 9, gap e need small as far as possible).

The auxiliary catch ontology 2 includes sliding block 21, hook arm 27 and the coupler body 28, and hook arm 27 is arranged in 21 bottom of sliding block, Coupler body 28 is arranged in 27 lower end of hook arm；Pedal is equipped with groove 19, and sliding block 21, which slides back and forth, to be arranged on groove 19, under hook arm 27 19 lower section of groove is stretched out at end.

The safety device further includes anti-loosing screw 4, and 19 wall body of groove is equipped with the elongated hole 11 that front and back is directed toward, anti-loosing screw 4 pass through elongated hole 11 on the outside of groove 19 connect with sliding block 21.

The groove 19 is arranged at the back edge of pedal top surface, and 19 rear end of groove and open top, 19 bottom surface of groove is Supporting plate 16, supporting plate 16 are equipped with hook arm relief hole 191, and the hook arm 27 extends to 19 lower section of groove through hook arm relief hole 191.

The setting of elongated hole 11 is equipped with connecting column 26 in 16 left and right sides of supporting plate, the corresponding anti-loosing screw 4 of the sliding block 21.

21 front end of sliding block is equipped with boss 25, and 25 top surface of boss is lower than 21 top surface of sliding block, and 19 front end of groove corresponds to boss 25 are equipped with jack 192, and boss 25 is inserted into jack 192.

The supporting plate 16 is equipped with baffle 15, is equipped with elastic component prelocalization 14 on rear side of baffle 15,21 bottom of sliding block is set Have a cavity 29, be equipped on rear side of cavity 29 after elastic component and position 22, the elastic component is spring 3,3 rear and front end of spring respectively with bullet Property part prelocalization 14 and elastic component after positioning 22 abut.

The setting of baffle 15 is equipped with the first guide groove 17 in 15 middle part of baffle, 15 top surface of baffle, and 21 bottom of sliding block is equipped with Cooperation is oriented to before and after first guide plate 23, the first guide plate 23 and the first guide groove 17.

The second guide groove 12 is equipped at left and right sides of the supporting plate 16,21 bottom of sliding block is equipped with the second guide plate 24, and second leads Cooperation is oriented to before and after to plate 24 and the second guide groove 12.Second guide groove 12 is located at 11 rear of elongated hole, and second leads Connect to plate 24 with connecting column 26, to reinforce 26 intensity of connecting column.The left and right sides of second guide groove 12 is stiffening plate 18.

The folding ladder includes front foot frame 5, rear leg 10, pedal rod 7 and foot prop connecting rod 6,10 upper end of rear leg with Front foot frame 5 is hinged, and the cross bar 9 is arranged on 10 top of rear leg；The pedal includes under one piece of top pedal 1 and one piece or more Pedal 8, pushes up pedal 1 and lower pedal 8 is arranged from top to bottom, and it is hinged with front foot frame 5 respectively to push up 1 front end of pedal and lower 8 front end of pedal； Pedal rod 7 is hinged with top pedal 1 and lower pedal 8 respectively, and 6 both ends of foot prop connecting rod are hinged with top pedal 1 and rear leg 10 respectively.

Its working principle is that: when front foot frame 5 and rear leg 10 open, pedal 1 and the rotation of lower pedal 8 are pushed up, pushes up 1 turn of pedal When to close to horizontality, when 28 bottom bevel of coupler body and cross bar 9 contact, so that coupler body 28 and the sliding block 21 being attached thereto are forward Mobile, after cross bar 9 are left in 28 bottom surface of coupler body, coupler body 28 resets under the effect of spring 3 to be moved backward, and is buckled in 9 lower section of cross bar, from And realize it is self-locking, at this point, ladder is in stable unfolded state.When needing folded ladder, sliding block 21, coupler body 28 are pushed forward Travel forward and be staggered before and after cross bar 9, be rotated up at this time top pedal 1 ladder may make to be converted to folded state.

Claims (10)

1. a kind of ladder safety device, the ladder includes folding ladder and pedal, and folding ladder corresponds to pedal and is equipped with cross bar, Pedal is equipped with safety device, when folding ladder expansion, the safety device and cross bar snapping of pedal；It is characterized by: the guarantor Dangerous device includes auxiliary catch ontology and elastic component, and auxiliary catch ontology, which slides laterally, to be arranged on pedal, and elastic component setting is being insured Between hook ontology and pedal, auxiliary catch ontology is equipped with coupler body, and coupler body is buckled in below cross bar.

2. ladder safety device according to claim 1, it is characterised in that: the coupler body is triangular in shape, and coupler body top surface is Laterally setting, the setting of coupler body inclined bottom surface, coupler body top surface and cross bar bottom gap cooperate.

3. ladder safety device according to claim 1, it is characterised in that: the auxiliary catch ontology includes sliding block, hook arm With the coupler body, hook arm setting is arranged in slider bottom, coupler body in hook arm lower end；Pedal is equipped with groove, and sliding block slides back and forth It is arranged on groove, hook arm lower end is stretched out below groove.

4. ladder safety device according to claim 3, it is characterised in that: the safety device further includes anti-loosing screw, Groove wall body is equipped with the elongated hole that front and back is directed toward, and anti-loosing screw passes through elongated hole on the outside of groove and connect with sliding block.

5. according to the ladder safety device of claim 3 or 4, it is characterised in that: the groove is arranged behind pedal top surface At end margin, groove rear end and open top, groove floor are supporting plate, and supporting plate is equipped with hook arm relief hole, and the hook arm is through hook Arm relief hole extends to below groove.

6. ladder safety device according to claim 5, it is characterised in that: the slip front is equipped with boss, boss top Face is lower than sliding block top surface, and groove front end corresponds to boss equipped with jack, and boss is inserted into jack.

7. ladder safety device according to claim 5, it is characterised in that: the supporting plate is equipped with baffle, baffle rear side Equipped with elastic component prelocalization, the slider bottom is equipped with cavity, positions after being equipped with elastic component on rear side of cavity, and the elastic component is bullet Spring, spring rear and front end respectively with located adjacent after elastic component prelocalization and elastic component.

8. ladder safety device according to claim 7, it is characterised in that: the baffle top surface is equipped with the first guide groove, Slider bottom is equipped with the first guide plate, and guiding cooperates before and after the first guide plate and the first guide groove.

9. ladder safety device according to claim 5, it is characterised in that: be equipped with the second guiding at left and right sides of the supporting plate Slot, slider bottom are equipped with the second guide plate, and guiding cooperates before and after the second guide plate and the second guide groove.

10. ladder safety device according to claim 1, it is characterised in that: the folding ladder includes front foot frame, the rear foot Frame, pedal rod and foot prop connecting rod, rear leg upper end and front foot frame are hinged, and the cross bar is arranged on rear leg top；It is described to step on Plate includes the lower pedal of one piece of top pedal and one piece or more, pushes up pedal and lower pedal is arranged from top to bottom, top pedal front end is under Pedal front end is hinged with front foot frame respectively；Pedal rod respectively with top pedal and lower pedal it is hinged, foot prop connecting rod two end respectively with It pushes up pedal and rear leg is hinged.