CN201863792U - Unrecoverable safety lock applied to escape window - Google Patents

Abstract

The utility model provides an unrecoverable safety lock applied to an escape window, which comprises a first compression bolt fixedly connected with a push handle, a second compression bolt fixedly connected with a window frame and a safety thread for connecting the first compression bolt with the second compression bolt. The unrecoverable safety lock has the following beneficial effect: the escape window can be quickly deflected out of a vehicle and slide downwards to form a sliding ladder with an inclined surface by a powerful pushing force of an escaper due to surviving consciousness in an emergency, so that the safe, quick and reliable escaping can be realized. Meanwhile, a safety groove arranged on the safety lock is used for adjusting the maximum safety bearing capacity of the safety lock and is designed according to the requirement of a user.

Description

Be applied to the irrecoverable safety lock of escape window

[technical field]

The utility model relates to the escape window technical field, particularly a kind of irrecoverable safety lock that is applied to escape window.

[background technology]

The bus burst accident is of common occurrence in actual life, the transportation means that this personnel are intensive, in case the emergency episode that meets accident, the rapid evacuation that realizes personnel is individual very important problem.At this phenomenon, existing at present multiple escape window, all there is different technical matterss in these escape windows.

First kind is convertible escape window, and after the forms of this escape window were reversed and open out, the thrust on the forms is cancellation in a single day, and this forms meeting auto-closing is unfavorable for survivor's long-term use, and overturns when opening that these forms are to the easily new injury of formation of survivor.

Second kind is plug-type escape window, forms is made two fan windows of left and right sides slippage.Stagger with the space that closes window about when closed; During escape that the left and right sides is stacked, a half space of window is used for the personnel escape and passes through like this, there is the survivor when too much, and is easily blocked, and in emergency circumstances not only escape rate is low but also the survivor easily constituted new injury.

The third is the pull-type escape window, and the window arrangement that is provided with on itself and the train is approximate.During escape, the switch that two hands are pinned the window both sides upwards firmly, below just can leave and be about 90 centimetres wide about 46 centimetres of high spaces, the survivor creeps by this window.It exists, and upwards the application of force is excessive, is unfavorable for that the old,weak,sick and disabled person uses, and particularly a lot of women can't normally open escape.

The 4th kind is sun-roof escape window, and this escape window is arranged at the roof place of bus, and upwards the top is to open window during escape, and the survivor climbs out of through this window again.There is the escape inefficiency and climb to eminence and also be unfavorable for the problem that follow-up safety is left.

Also have a kind ofly for smashing the formula escape window, this escape window directly uses hard thing with glass crushing when the survivor uses, and leaves from the window space of opening then.There is the glass that is crashed to pieces and caused current harsh environment, the dangerous increasing, this disposable escape glass improves the cost of bus simultaneously.

[utility model content]

In order to solve existing technical matters, the utility model provides a kind of irrecoverable safety lock that is applied to escape window, and it sets a maximum safe holding capacity, stressed when getting rid of that pushing hands is as handrail under the normal operating condition.

The utility model solves existing technical matters, a kind of irrecoverable safety lock that is applied to escape window is provided, and described safety lock comprises first push bolt, second push bolt that is fixed on window frame and the security thread that is connected described first, second push bolt that is fixed on pushing hands.

The utility model further improves:

Described window frame comprises the block that its lower wall inside face and being used for of being connected links with described pushing hands.

Described second push bolt links to each other with described security thread.

The zone line of described security thread is provided with a safety groove, and this safety groove is used to regulate the maximum safe holding capacity of described safety lock.

Described security thread is safe steel wire.

The face that links of described pushing hands and described block is L-shaped.

Compared to prior art, the beneficial effects of the utility model are: in case of emergency, the powerful pushing force that the survivor utilizes the consciousness of seeking survival to produce makes escape window rapidly to car extrinsic deflection, the formation one inclined-plane slide that glides, thereby realizes safe, fast and reliable escape.Simultaneously, the safety groove that is provided with on the safety lock, the maximum safe holding capacity that it regulates described safety lock designs according to customer requirement.

[description of drawings]

Fig. 1 is the structural representation of the escape window of the utility model bus;

Fig. 2 is the structural representation of the described escape window normal operating condition of Fig. 1;

Fig. 3 is the structural representation of the described escape window escape of Fig. 1 running condition;

Fig. 4 is the structural scheme of mechanism of Fig. 3;

Fig. 5 is the structural representation of described safety lock;

Fig. 6 is the horizontal control mechanism scheme drawing of described escape window normal operating condition;

Fig. 7 is the horizontal control mechanism scheme drawing of described escape window escape running condition.

[specific embodiment]

Below in conjunction with the description of drawings and the specific embodiment the utility model is further specified.

Extremely shown in Figure 7 as Fig. 1, a kind of escape window of using the irrecoverable safety lock of the utility model, it comprises window frame 11 and forms 13, this window frame 11 comprises left and right sides wall, upper wall and lower wall, simultaneously, this window frame 11 side of being positioned at car is called inside face, is positioned at the outer side of car and is called outside face.This escape window links to each other with the upper edge of forms 13 gliding mass 12 is set, and in the two side of window frame 11 chute that matches with gliding mass 12 is set, and gliding mass 12 moves down along the chute level of synchronization; This escape window also comprises: pushing hands 14, and pushing hands 14 is hinged in the inside face of forms 13 lower edges, can rotate relative to forms 13 lower edges after pushing hands 14 is stressed; Torsion spring 15, torsion spring 15 connect pushing hands 14 and the forms 13 adjacent with this pushing hands 14 respectively, and pushing hands 14 is subjected to behind the operation torque of torsion spring 15 forms 13 outside opened with certain angle relatively; Block 16, block 16 is fixed in the inboard of window frame 11, and when forms 13 were positioned at closure state, pushing hands 14 linked mutually with block 16; Safety lock 17, when forms 13 were positioned at closure state, safety lock 17 one ends connected pushing hands 14, the other end connects block 16.The pushing hands of this escape window is subjected to moving outside the lower edge of forms after the pushing force of survivor in the car, gliding mass is because the self gravitation downslide like this, simultaneously, the lower edge of forms also moves down after losing and supporting, and finally after pushing hands is opened, form an inclined-plane slide under the effect of bearing force, in car, move on to ground for the survivor along the inclined-plane slide.

Safety lock 17 is used to realize that forms 13 begin action when it is stressed when surpassing the maximum holding capacity of setting.This safety lock 17 comprises first push bolt 171, second push bolt 172 and security thread 173, first push bolt is fixed in pushing hands 14, second push bolt is fixed in block 16, and step up respectively on first, second push bolt 171,172 at its two ends of security thread.The zone line of security thread is provided with a safety groove 174, and this safety groove 174 is used to regulate the maximum safe holding capacity of pushing hands 14.After pushing hands 14 is stressed, at first realize the brittle fracture of safety lock 17, pushing hands drives forms and moves then.

Outwards be offset for the ease of forms 13 relative gliding masses 12, first jointed shaft 19 preferably is set between gliding mass 12 and forms 13, forms 13 rotate around this first jointed shaft 19.Also can adopt other articulated structure, only need guarantee forms and gliding mass when the bus normal operating condition, the leak tightness of this escape window well gets final product.

Because the relative forms of pushing hands are rotating opening also, so second jointed shaft 20 is set between forms 13 and pushing hands 14, pushing hands 14 is rotated around this second jointed shaft 20, and the relative forms of pushing hands outwards open with final support forms and keep the inclined-plane slide.Torsion spring 15 is two, and it is sheathed on the two ends of second jointed shaft 20 respectively.When forms were in closure state, this torsion spring correspondence was in deformation state, and pushing hands this moment is subjected to the constrained force of operation torque and the block of torsion spring simultaneously, and constrained force turns round greater than operation torque, forms is stablized be in closure state.After constrained force is eliminated, under the powerful pushing force effect that survivor's consciousness of seeking survival produces, when breaking the safety lock steel wire, pushing hands is moved with forms direction outside the vehicle body that hangs down, final under the position limiting structure effect of torsion spring operation torque and pushing hands, have certain angle between pushing hands and the forms, forms, pushing hands constitute an acute angle shape like this, and promptly forms form an inclined-plane slide.

This escape window comprises and is used to the synchronous slide control device 18 that guarantees that gliding mass 12 levels move down.Slide control device 18 comprises first belt wheel, second belt wheel, first steel wire and second steel wire synchronously, first, second belt wheel 181,182 levels are hinged in gliding mass 12 inside faces, first, second steel wire 183,184 diagonal angles are fixed in the two side inside face of window frame 11, simultaneously, this first, second steel wire 183,184 is all walked around first, second belt wheel 181,182.First, second steel wire 183,184 that is paperwrapped in first, second belt wheel 181,182 is eight shape.

Pushing hands 14 is L-shaped with the face that links of block 16.

The utility model is no more than preposition in order to guarantee pushing hands 14 when opening, between pushing hands 14 and forms stop gear is set.Between forms and pushing hands, also limiting section can be set when in addition, forms are opened.

Its mean of escape of escape window of using this irrecoverable safety lock may further comprise the steps: the pushing hands 14 that is hinged in forms 13 lower edges is subjected to external force, departs from window frame 11 until these forms 13 lower edges; Forms 13 continue to depart from window frame 11, and simultaneously, the gliding mass 12 that is positioned at forms 13 upper edges moves down owing to gravity; Gliding mass 12 is displaced downwardly to the lower wall near window frame 11; Forms 13 outwards depart from the inclined-plane slide at the certain inclination angle of final formation, and at this moment, the lateral surface that pushing hands 14 props up the bus vehicle body supports forms 13.

In the process that gliding mass 12 moves down, be hinged in first, second belt wheel 181,182 on the gliding mass 12 and first, second steel wire 183,184 of being fixed on the window frame 11 guarantees that gliding masses 12 move down for level.First, second steel wire 183,184 diagonal angles are fixed in two madial walls of window frame 11, simultaneously, this first, second steel wire 183,184 is all walked around first, second belt wheel 181,182, and first, second steel wire 183,184 that is paperwrapped in first, second belt wheel 181,182 is eight shape.

Pushing hands 14 is subjected to the application force that the survivor applies in the car, and this force direction points to outside the car; This application force surpasses the maximum safe holding capacity that connects the safety lock 17 between the block 16 on pushing hands 14 and the window frame 11; After this safety lock 17 was opened, pushing hands 14 was left block 16 back forms and is departed from window frame 11.

Second jointed shaft 20 is set between forms 13 and pushing hands 14, and pushing hands 14 is rotated around this second jointed shaft 20.Torsion spring 15 is two, and it is sheathed on the two ends of second jointed shaft 20 respectively; The lower edge of supporting forms 13 is opened in the operation torque realization pushing hands 14 of torsion spring 15.The angle of inclination of inclined-plane slide is 42～60 °, perhaps directly elects 45 ° as.In order to guarantee to open the angle that back pushing hands and forms remain on setting, preferably between pushing hands and forms, stop gear is set.

In case of emergency, the powerful pushing force that the survivor utilizes the consciousness of seeking survival to produce, make escape window form an inclined-plane slide to car extrinsic deflection, downslide rapidly, thereby realize safe, fast and reliable escape, at this moment, cooperate synchronous slide control device to realize that gliding mass moves down synchronously, prevent tilt blocking of causing or come off of gliding mass.

This escape window not only can be stressed the back self-opening, and after opening, do not need I or other people to assist to support forms 13 fully, make the safe and reliable easily escape of survivor.

The inclination angle principle of design of the inclined-plane slide of this escape window is as follows:

The survivor slides to ground by the inclined-plane slide in car, can the inclination angle size of this inclined-plane slide be leaned on by the survivor and slide to ground under the self gravitation and determine, i.e. the inclination angle of inclined-plane slide minimum

Should equal the friction angle between survivor and the oblique slide

Glide voluntarily on the inclined-plane slide with the bondsman, locking phenomenon do not occur.Friction coefficient between people and the inclined-plane slide is taken as f=0.9, according to friction and condition of self-locking, and the inclination angle of oblique slide

For:

So the angle of inclination of inclined-plane slide is preferably greater than 42 °, in the time of also can be less than 42 °, this moment, the survivor gets final product along the downward slippage of exerting oneself of inclined-plane slide.When greater than 42 °, consider under the existing condition survivor can be safely, reliable and glide smoothly, further preferred oblique slide and ground elevation are 45 °.

Torsion spring 15 its preferred parameters of this escape window are as follows:

Safety lock 17 principle of designs of this escape window:

The survivor is constantly tight in danger, and its pushing force can reach the gravity of human body self, is assumed to be 75kg, i.e. F ₁=735N.Because safety lock 17 is made up of a security thread 173 and first, second push bolt 171,172, security thread 173 is pressed between pushing hands 14 and window frame 11 blocks 16 by first, second push bolt 171,172, safety groove 174 structures that its middle part has the cross section to diminish, when the survivor pushes pushing hands 14, during security thread 173 tensions, the small bore place of safety groove 174 produces bigger stress concentration, moment brittle fracture.Break the tensile force f of steel wire through an experimental calculation ₂=479 * 735/40=8801N considers stress concentration and to the simulation of actual conditions, dwindles the pushing force several times that steel wire is 740Mpa with the tensile strength of material, the minimum diameter d=1mmm that steel wire is broken.

The hands-off principle of design of pushing hands 14 motions of this escape window:

Block 16 links with pushing hands 14, and its cross section that links is L shaped, and stressed outwards mobile when pushing hands 14, the rotary motion trace of its pushing hands 14 also can be dodged block 16, in order to avoid can't make forms 13 produce deflections after being stuck.

Synchronous slide control device 18 principle of designs of this escape window:

Because the restriction of forms 13 length and width sizes along moving down direction, can not guarantee gliding mass 12 synchronous parallel downslides.Now adopt first, second steel wire 183,184 of the left and right sides, it be fixed on window frame 11 medial surfaces angie type, respectively be hinged on two belt wheels on the gliding mass 12 and intersect and hold.Regulate the length and the degree of tension of steel wire, when gliding mass 12 glided, two belt wheels moved down synchronously, guaranteed gliding mass 12 parallel downslides.

The principle analysis of this escape window:

Escape window is made up of torsion spring 15 and the safety lock 17 and the stop gear etc. of 13 of window frame 11, gliding mass 12, forms 13, pushing hands 14, pushing hands 14 and forms.Wherein " safety lock 17 " is made up of the steel wire and the push bolt that are fixed on 14 of window frame 11 and pushing hands, broken as steel wire, and 17 of safety locks are opened, otherwise safety lock 17 is closed.

Under the normal circumstances, people's pushing force can not be broken safety lock 17 steel wires, and pushing hands 14 is near window frame 11 link stoppers, and is spacing by it, makes forms 13 be in closed condition, and this moment, the twist angle that adds in advance of torsion spring 15 was 20 degree, and escape window uses as ordinary window; When on the car emergency situation taking place, the survivor is when turmoil is crowded, and instinct produces powerful pushing force F ₁, produce a tensile force f by fulcrum ₂Act on the steel wire of safety lock 17, because stress concentration, steel wire is instantaneous to be disconnected from middle part small bore fragility, pushing hands 14 is extrapolated fast with forms 13 along path of motion, forms 13 downslide openers quicken downwards to slide under the effect of gravity simultaneously, the distance that gliding mass 12 glides is determined by the limiting stopper on the window frame 11, to slide into for 12 times apart from window frame 11 lower edges be the 17mm place and stop when gliding mass, torsion spring 15 twist angles become working torsional angle 90 degree by adding twist angle 20 degree in advance, working torsional angle is kept by the position limiting structure between forms 13 and the pushing hands 14, same because the effect of gravity, motion can oppositely not gone up by mechanism, so the former forms 13 instantaneous unlatchings oblique slide at 45 that uses as ordinary window forms a safety, reliable and tunnel escape efficiently.

The application of this escape window is as follows:

I. the survivor is under emergency situation, the crowded pushing force that produces escape outside car by the light of nature, and the forms 13 of will escape are opened, are opened 45 degree and form the inclined-plane slides self-servicely, make the survivor rapidly, safely, reliably, skid off outside the car easily, and do not need other people to assist.

II. utilize gliding mass, realize that deadweight moves down, quicken to open forms 13, formation is particularly suitable for handicapped person, as special survivors' such as old man, child, pregnant woman, baby-holder, individuals with disabilities escape, only need this moment they are put slide, can slide to ground automatically, smoothly.

III. sharply go out the diagonal angle and be connected in two steel wires on the window frame, respectively be hinged on the gliding mass 12 about two belt wheels, intersect and twine, two belt wheels can move down synchronously, guarantee that gliding mass 12 levels glide, and are not stuck in chute.

IV. connect with a security thread 173 between pushing hands 14 and the window frame, just often user's pushing force can not be broken steel wire; The powerful pushing force of survivor when critical is broken security thread from middle small bore fragility, escape window is released fast, and moment opens.

Gliding style is opened automatically under adopting when V. escape window is opened, and compares the escape window of other form, has dwindled the space of opening.

This escape window creatively utilizes deadweight to realize gliding style self-opening escape window down, not only alternative upset, push-and-pull, lift, skylight and smash the escape window of formula, and the various accidents that take place in the suitable more actual life, in very little space, can open quickly and easily;

Ingenious, simple to operate, the excellent performance, with low cost of this escape window design, its series of products are applicable to the safe and quick escape of various crowds on the bus, alternative like product in the market has actual application value.

Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (6)

1. irrecoverable safety lock that is applied to escape window, it is characterized in that: described safety lock comprises first push bolt, second push bolt that is fixed on window frame and the security thread that is connected described first, second push bolt that is fixed on pushing hands.

2. the irrecoverable safety lock that is applied to escape window according to claim 1 is characterized in that: described window frame comprises the block that its lower wall inside face and being used for of being connected links with described pushing hands.

3. the irrecoverable safety lock that is applied to escape window according to claim 2 is characterized in that: described second push bolt links to each other with described security thread.

4. according to any described irrecoverable safety lock that is applied to escape window of claim 1 to 3, it is characterized in that: the zone line of described security thread is provided with a safety groove, and this safety groove is used to regulate the maximum safe holding capacity of described safety lock.

5. according to any described irrecoverable safety lock that is applied to escape window of claim 1 to 3, it is characterized in that: described security thread is safe steel wire.

6. the irrecoverable safety lock that is applied to escape window according to claim 1 is characterized in that: the face that links of described pushing hands and described block is L-shaped.

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