CN2403883Y - Ladders with securing hook device - Google Patents

Abstract

The utility model relates to a ladder with a positioning hook device. The hook device comprises a hook rod, a cover plate, a partition plate, a spring and a pivot shaft, wherein, the hook rod is provided with a hook end part with a hook port, and the rod end of the hook rod is rotatablely positioned on the pivot shaft. The pivot shaft and the cover plate are fixed to a ladder frame of a movable ladder part. The partition plate is buckled and fixed to the inner side surface of the cover plate, and the spring is positioned between the ladder frame of the movable ladder part and the partition plate. The rod end of the hook rod and an upper margin corner of the cover plate are respectively buckled by two outward extended end parts of the spring. The utility model has the advantages of novel structure, convenient operation and reliable positioning function.

Description

Ladder with positioning hanger device

The utility model is relevant a kind of ladder with positioning hanger device, more particularly is the relevant hooking device that can locate the movable terraced portion in the flexible ladder.

Flexible ladder mainly is divided into a motionless terraced portion and a movable terraced portion, and wherein movable terraced portion can be moved by upper and lower with respect to motionless terraced portion, in order to make movable terraced portion in that to be moved into a certain position no longer mobile, generally is equipped with the device of the movable terraced portion in a location.Common common positioner is the positioner of coupling type, that is is arranged at the positioner in the movable terraced portion, has the treadle that hook can hook motionless terraced portion.A kind of hook positioner of commonly using at present is with manual mode hook to be fastened a treadle of motionless terraced portion, reaches to cause the location purpose.In addition, another kind of coupling type positioner being arranged still, is the hook that is provided with the tool loading, by the deadweight of loading, hook is fixed to a treadle of motionless terraced portion.But hand is commonly used the hook positioner, the inconvenience that operates, and the loading formula is commonly used the coupling type positioner, owing to increase the weight of loading, moves and carries inconvenience.

The purpose of this utility model is to provide a kind of not only structure novel, and the ladder easy to operate, that positioning function is certain positioning hanger device.

The purpose of this utility model is achieved in that

A kind of ladder with positioning hanger device comprises:

One motionless terraced portion, this motionless terraced portion is provided with plural treadle;

One movable terraced portion, this movable terraced portion has two relative ladder sidewalls, and is fixed together with this motionless terraced portion movably;

Two hook lever apparatus, this two hooks lever apparatus is to be individually fixed in one of this two side in this movable terraced portion, and toward each other;

It is characterized in that:

Respectively this two hooks lever apparatus comprises again:

One hook bar, an end of this hook bar are to have a hook end that slightly becomes the mouth of hook of short U-shaped, and this mouth of hook place is toward top one-tenth tapered shape of this hook end certainly, and the other end of this hook bar is a flat end;

One block piece is that an end becomes pointed long piece spare, and its other end becomes the jag district, and this jag district bridges and pivot is fixed near this hook bar centre, and near the hook portion place, makes block piece rotate in jag district scope;

One cover plate, this cover plate are one to have a width less than a sidewall width of the ladder of this movable ladder and be fixed in the U template of this sidewall, and this cover plate covers this flat end of this hook bar;

One dividing plate, this dividing plate are one to have the U template of a width less than this cover plate, and this dividing plate becomes relative anchoring together with cover plate, and the flat end of this hook bar then is placed between this dividing plate and this cover plate;

One spring, this spring is the torsion type spring of the second end that stretches out outward of first end and that a tool one stretches out outward, this spring is positioned between the sidewall of one of this dividing plate and this movable terraced portion ladder, and this first end fastens this hook bar, and this second end then fastens one of this cover plate corner;

One pivot, this pivot has a thread head, stretches straight ended, this dividing plate, this sidewall and this spring of logical this cover plate, this hook bar, and is fixed in this side-walls, makes this hook bar be fixed pivotly.

The utility model has following actively useful effect:

The positioning hanger device of this ladder comprises a hook bar, a cover plate, a dividing plate, a spring, and a pivot; This hook bar has a hook end that is provided with the mouth of hook, the rod end of hook bar is rotatably positioned on pivot, pivot and cover plate are fixed on the ladder of movable terraced portion, dividing plate anchors the medial surface in cover plate, spring is positioned between the ladder and dividing plate of movable terraced portion, and two overhanging end portions of spring fasten the upper limb corner of the rod end and the cover plate of this hook bar respectively; The utility model structure is novel, easy to operate, positioning function is certain.

For further setting forth characteristics of the present utility model and advantage, do detailed explanation below with reference to accompanying drawing.

Accompanying drawing is summarized as follows:

Fig. 1 is installed on the ladder with the positioning hanger device for two ladders of the present utility model, and the schematic diagram on the plane of fastener one treadle;

Fig. 2 is the lateral plane schematic diagram that is positioned at the positioning hanger device on the left side among Fig. 1;

Fig. 3 is the partial top view of Fig. 2, in order to representing in this positioning hanger device, each inter-module concern the position;

Fig. 4 is the enlarged diagram of the cover plate among Fig. 2, anchors the position in cover plate in order to represent dividing plate;

Fig. 5 is the view when moving in the movable terraced portion among Fig. 2;

Fig. 6 is the view of the movable terraced portion among Fig. 5 when moving on again;

Fig. 7 is the view of movable terraced portion when moving down among Fig. 6.

Main symbol partly is summarized as follows:

1. link up with bar 2. block pieces

3. cover plate 31. dividing plates

4. spring 5. pivots

7. motionless terraced portion 71,72,73. treadles

8. movable terraced portion

At first please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model ladder positioning hanger device is essentially two a pair of hooking devices respect to one another of formation, and this two hooking device is individually fixed in the relative side-walls of two ladders of movable terraced portion 8.Each hooking device comprises a hook bar 1, one block piece 2, one cover plate 3, one dividing plates, 31, one springs 4 and pivots 5.Hook bar 1 is the stock that an end has hook portion, this hook portion has the mouth of hook that slightly becomes the U type, treadle 71 in order to the motionless terraced portion 7 of fastener, and this hook portion becomes tapered shape from the mouth of hook to the hook portion top, the other end of this hook bar 1 is a flat end, and is fixed to one of two relative ladder sidewalls of movable terraced portion 8 rotationally by pivot 5.Block piece 2 is that an end becomes pointed long piece spare, its other end becomes the jag district, this jag district bridges and pivot is fixed near hook bar 1 centre, and near the hook portion place, make block piece 2 in jag district scope, rotate, its purposes is for when movable terraced portion 8 moves down, and stops that the mouth of hook contacts with treadle in the motionless terraced portion.Cover plate 3 is the U template that a width is slightly less than the ladder sidewall width of movable terraced portion 8, and be fixed in the overhanging marginal of the ladder sidewall of movable terraced portion 8, in order to cover the straight ended of hook bar 1, dividing plate 31 is that a width is little and relative with cover plate 3 than cover plate 3, and anchor U-shaped plate in cover plate 3, example as Fig. 4, the dual-side of dividing plate 31 is connected with four and anchors with tab 311, cover plate 3 is provided with four holes to should tab 311, after tab 311 was stretched logical this four hole, through extruding tab 311 outer ends, these ends became big and promptly form and cover plate 3 anchors together state because of stressed, this kind fixed form is the character of giving an example, and other fixed form of commonly using also can.The straight ended of hook bar 1 is to be placed in 31 on cover plate 3 and dividing plate, pivot 5 has an end of thread and polygonal head, and the straight ended, dividing plate 31 of stretching logical cover plate 3, hook bar 1 and ladder one sidewall of movable terraced portion 8 and by with nut by the aperture 80 on another sidewall of ladder of movable terraced portion 8, the end of pivot 5 is fixed at one of the ladder sidewall of movable terraced portion 8.Spring 4 is essentially between the sidewall that is sheathed on dividing plate 31 and movable terraced portion 8, and ring encloses a torque spring of pivot 5, this spring 4 has overhanging both ends, one end is the straight ended that fastens hook bar 1, the other end fastens a corner of cover plate 3 upper limbs, makes hook bar 1 keep the state that compressed by torque spring 4.Below will do an explanation to the operation of this hooking device.

Please refer to Fig. 5, when movable terraced portion 8 links up with the state that bar 1 hooks the treadle 71 of motionless terraced portion 7 in Fig. 2, when up mobile, block piece 2 contacts with lower edge one corner of treadle 71, and this moment, block piece 2 was in the extreme position that down rotates, and when therefore movable terraced portion 8 continued up to move, just order hook bar was under the bias voltage of spring 4, with the axis of pivot 5 is that the center is done counterclockwise to rotate, until block piece 2 not with till treadle 71 contacts.

Please refer to Fig. 6, when movable terraced portion 8 continues up to move, because of block piece 2 is no longer supporting treadle 71, hook bar 1 is because of being subjected to the bias voltage of spring 4, and be that the center is made clockwise direction and rotated with the axis of pivot 5, position during to the work that originally was not subjected to block piece 2, but link up with the top edge face of bar 1, then near treadle 72, when the top edge face of hook bar 1 when contacting, link up with bar 1 and stop that because of treadle 72 axis with pivot 5 is the center again again with the lower edge of treadle 72, do counterclockwise to rotate, until the top edge emaciated face of hook bar 1 till treadle 72.When mouth of hook position was on treadle 72, hook bar 1 was subjected to the bias voltage of spring 4 again, and gets back to position when not interrupted, and this moment, the mouth of hook of then linking up with bar 1 just can hook treadle 72 if movable terraced portion 8 is moved down, formation state as shown in Figure 2; If move on movable terraced portion 8 continues, the top edge face of hook bar 1 again can with contact at other last treadles, repeat above-mentioned action, till movable terraced portion 8 no longer up moves.

Please refer to Fig. 7, when movable terraced portion 8 when state shown in Figure 6 moves down, 2 of block pieces are subjected to the obstruction of treadle 71 and rotate toward the mouth of hook place that links up with bar, avoid the mouth of hook to hook treadle 71, if movable terraced portion 8 continues to move down again, block piece 2 can touch treadle 73, block the mouth of hook and form, and the situation of avoiding the mouth of hook to hook treadle 73 so movable terraced portion 8 just can be by in last position, is displaced downwardly to the position of below smoothly.

In sum, characteristics of the present utility model move on arbitrary treadle of the mouth of hook in motionless terraced portion 7 of hook bar 1 on needing only movable terraced portion 8, and block piece 2 is when still being in the below of this treadle, move down movable terraced portion 8, but just this treadle of fastener of hook bar 1 just can be rapidly, make things convenient for and positively make movable terraced portion 8 be in positioning states.When movable terraced portion 8 will continue when up mobile, because of the convergent ora terminalis on hook bar 1 top is arranged, form with the lower edge corner of each treadle and slidably contact, movable terraced portion 8 moves on just can be expedite.When movable terraced portion 8 will continue to move down,, make hook bar 1 not move down because of having pivotable block piece 2 to be in to seal the state of the mouth of hook of hook bar 1 with can not hooking arbitrary treadle.

Claims (1)

1, a kind of ladder with positioning hanger device comprises:

One motionless terraced portion, this motionless terraced portion is provided with plural treadle;

One movable terraced portion, this movable terraced portion has two relative ladder sidewalls, and is fixed together with this motionless terraced portion movably;

Two hook lever apparatus, this two hooks lever apparatus is to be individually fixed in one of this two side in this movable terraced portion, and toward each other;

It is characterized in that:

Respectively this two hooks lever apparatus comprises again:

One hook bar, an end of this hook bar are to have a hook end that slightly becomes the mouth of hook of short U-shaped, and this mouth of hook place is toward top one-tenth tapered shape of this hook end certainly, and the other end of this hook bar is a flat end;

One block piece is that an end becomes pointed long piece spare, and its other end becomes the jag district, and this jag district bridges and pivot is fixed near this hook bar centre, and near the hook portion place, makes block piece rotate in jag district scope;

One cover plate, this cover plate are one to have a width less than a sidewall width of the ladder of this movable ladder and be fixed in the U template of this sidewall, and this cover plate covers this flat end of this hook bar;

One dividing plate, this dividing plate are one to have the U template of a width less than this cover plate, and this dividing plate becomes relative anchoring together with cover plate, and the flat end of this hook bar then is placed between this dividing plate and this cover plate;

One spring, this spring is the torsion type spring of the second end that stretches out outward of first end and that a tool one stretches out outward, this spring is positioned between the sidewall of one of this dividing plate and this movable terraced portion ladder, and this first end fastens this hook bar, and this second end then fastens one of this cover plate corner;

One pivot, this pivot has a thread head, stretches straight ended, this dividing plate, this sidewall and this spring of logical this cover plate, this hook bar, and is fixed in this side-walls, makes this hook bar be fixed pivotly.

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