CN201106337Y

CN201106337Y - Pipe type latch

Info

Publication number: CN201106337Y
Application number: CNU2007201145249U
Authority: CN
Inventors: 刘宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-31
Filing date: 2007-08-31
Publication date: 2008-08-27
Anticipated expiration: 2017-08-31

Abstract

The utility model relates to a tubular latch, comprising a lock shell, a front splint, a bolt, the tail of which is provided with a dragging part, a coupled frame and a driven wheel; the driven wheel is connected with the coupled frame. The front end of the dragging part movably passes through the front end of the coupled frame and then is connected with the bolt, the rear end of the shaft lever is provided with a stop shoulder which pushes against and locates the rear end surface of the front end of the coupled frame. The shaft lever is sheathed with a first spring with a small stiffness coefficient, the rear end of the first spring pushes against the front end surface of the front end of the coupled frame, while the front end of the first spring pushes against the rear end surface of the bolt, so the bolt always keeps a trend of protruding out from an opening of the front splint. The lock shell is also fixed with a baffle, a second spring with a large stiffness coefficient is arranged between the baffle and the coupled frame, a rear end of the second spring pushes against the front end surface of the baffle, while the front end of the second spring pushes against the rear end surface of the front end of the coupled frame, so the coupled frame always keeps a trend of moving ahead. The tubular latch can ensure the stability of locking and the flexibility of closing the door simultaneously.

Description

A kind of tube type latch

Technical field

The utility model relates to a kind of improvement of tube type latch.

Background technology

Existing tube type latch has generally comprised housing, afterbody has the oblique dead bolt of the portion of dragging, be fixed on the preceding supporting plate of housing front end, the portion of dragging is slidably disposed in the housing, the movable perforate of passing on the preceding supporting plate of dead bolt, be provided with an interlock frame in the housing, drag portion and the interlock frame is fixed together, the corresponding position is provided with a baffle plate in the housing, between baffle plate and interlock frame, be supported with a single tower spring and act on the interlock frame, so that the oblique dead bolt that links to each other with the interlock frame has the trend that passes perforate on the preceding supporting plate all the time, also be provided with the handle drives device that drives the planker slippage on the housing.

As a patent No. is a kind of easy-opening tubulose keeper so the Chinese utility model patent " easy-opening tubulose keeper " of ZL91229407.8 (notification number is CN2110065Y) has disclosed, comprise a housing, one front shoe that is positioned at housing the place ahead is arranged, with a bolt apparatus, this bolt apparatus comprises that a keeper reciprocally stretches in this front shoe, the keeper bar connects this keeper, the restoring spring of one keeper is enclosed within on the tightening latch outwards door lock to be lived with the ejection keeper, one gripper shoe is fixed in the housing to withstand the restoring spring of this keeper, and a follower plate that sleeves between gripper shoe and the lower housing portion has one to be fixed in the back turn of bilge that the preceding turn of bilge and between keeper and the tightening latch is bent upwards; Leader's drive unit has an axle that is screwed into the housing rear to fix a door handle on this axle, and one is arranged at the handle restoring spring of housing afterbody, makes this handle be in level at ordinary times; One guid skateboard is that a long shaped plate is arranged at gripper shoe slidably, there is a back lug to stretch out by the slide plate rear and promoted by the cam part branch of this drive unit, end was used for promoting this handle restoring spring after one last turn of bilge was positioned at slide plate, and a preceding lug stretches out under direction before the slide plate and an elongated slot is opened between two lugs; One moving partially lever is arranged on the housing rotationally, have one to be positioned at the last pressing part in the middle of the lever and to be pushed and be used for this lever of deflection by preceding lug, with one be placed in lever bottom and be positioned at the following force part of pressing part below, in order to promote this follower plate turn of bilge afterwards.

Though it is simple relatively that above-mentioned tubulose keeper has structure, yet in order to consider the stability of locking, need the rigidity increase of spring just can be met the demands, and the rigidity of spring is in case increase, make that then the cushion effect quantitative change of closing the door is big and firm, could push door-plate and must apply bigger strength, and locking, thus, promptly be easy to generate bigger impact sound at closing time.And general handle has certain weight, and single spring rigidity is not enough, handle can not be reset to original level, so it must increase on handle back-moving spring is arranged.

At above-mentioned present situation, as an application number is a kind of bolt structure the Chinese invention patent " tube type latch " of ZL200510000100.5 (publication number is CN1637223A) has disclosed, comprise a housing, one bolt latch, be located at slidably in this housing, one inner forestock, be fixed on an end of this housing, one spring, be set on this bolt latch and operate, protrude from outside this housing to impel this bolt latch to pass the perforate on this inside forestock, also comprise a driven pulley, be set on this bolt latch and operate, the running of resisting this spring to pull back this bolt latch, wherein this driven pulley provides second spring of brute spring form, this bolt can be operated by the handle that does not have spring whereby, wherein this bolt latch has the bolt pinboard of a U-shaped strip, the rectangular thin slice of this U-shaped strip bolt pinboard is provided with a fork, and a support arm of this U-shaped strip provides a male member, this male member is arranged in a microscler hole of housing, this male member props up an end of this hole, with the bolt pinboard in the restriction housing.

Summary of the invention

Technical problem to be solved in the utility model is the tube type latch that another kind stability that can guarantee locking simultaneously and the gentle suitable property of closing the door are provided at above-mentioned prior art present situation.

Another technical problem to be solved in the utility model provides a kind of switchable bolt.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of tube type latch comprises a lock housing; Supporting plate before one, it is fixed on the lock housing front end; One afterbody has the dead bolt of the portion of dragging, dead bolt is movable pass before on the supporting plate perforate and protrude from lock housing; One interlock frame is arranged in the lock housing and can moves forward and backward in lock housing; One driven pulley, rotatable be arranged in the lock housing and can be by it rotates relative to lock housing hand-drive, this driven pulley links to each other with the interlock frame so that the rotation of driven pulley can drive the interlock frame moves forward and backward in lock housing; It is characterized in that: described dragging links to each other with dead bolt after portion's front end activity passes the front end of interlock frame, the rear end of axostylus axostyle have one with the rear end face of the interlock frame front end spacing shoulder block of conflicting, described shaft rod upper sleeve is provided with the first little spring of a coefficient of stiffiness, its rear end is resisted against the front end face of interlock frame front end, the trend of perforate on the supporting plate before the rear end face that front end is resisted against dead bolt has dead bolt to stretch out all the time; Also be fixed with a baffle plate in the described lock housing, baffle plate is positioned at the interlock frame, be provided with the second big spring of the coefficient of stiffiness between baffle plate and interlock frame front end, its rear end is resisted against the baffle plate front end face, and front end is resisted against interlock frame front end rear end face so that the interlock frame remains the trend of reach.

Above-mentioned driven pulley comprises the central core district of a column, having a square hole on it wears for the driving shaft on the handle, one actuator is fixed in the central core district, and at least one side of actuator has the clicking section to outer lug, this clicking section and interlock frame sidewall link to each other.It is a kind of driven wheel structure, and actuator can be a side that is fixed on the central core district, and actuator also can be to be plate-like, the sheathed central core district that is fixed on, and the structure of driven pulley is conventional components on tube type latch, so also can adopt other driven wheel structure.

For preventing the backward rotation driven pulley, one side of above-mentioned actuator has the clicking section, described interlock frame takes the shape of the letter U, have a slotted hole on the respective side walls of interlock frame, back edge of slotted hole has the protuberance of outside bending, the clicking section contacts with protuberance after stretching out slotted hole, corresponding, sidewall in lock housing has a narrow hole, described protuberance is arranged in narrow hole to limit the scope that the interlock frame moves in lock housing, under the state of supporting plate perforate, another sidewall inner end of the opposite side of actuator and lock housing is that plane contact is to stop the driven pulley backward rotation before dead bolt stretches out.Mode by plane contact realizes preventing the counter-rotational purpose of driven pulley, and this gear is relatively simple for structure, need not to increase other appurtenances, only needs that the respective face of actuator is made a plane and gets final product.Certain this prevention driven pulley counter-rotational structure under lock-out state is not limited to said structure, also can adopt application number is the disclosed frame mode of patent of invention of ZL200510000100.5, it is by actuator arranged outside one shoulder, and in lock housing the corresponding position be provided with one with the shoulder body of rod of gear mutually, but this position limiting structure slightly complicated, and assembly precision also had certain requirement.

The second above-mentioned spring has two, wherein the external diameter of one second spring is less than the internal diameter of another root second spring, the second wherein bigger spring housing is located in the second less spring, and the end that these two second springs are identical is conflicted with the baffle plate front end face simultaneously, and the other end while that these two second springs are identical and the rear end face of interlock frame front end are conflicted.Because second spring needs the bigger spring of the coefficient of stiffiness, just can meet the demands, if but the coefficient of stiffiness of spring is too big, its pliability is with regard to corresponding reduction, the too big spring of the coefficient of stiffiness is several times fully after the compressive strain, just be difficult for resetting, and forfeiture elasticity, but as the less spring of the employing coefficient of stiffiness, though can guarantee the application life of spring, but it can not the stable requirement of fine satisfied locking, continuous test through the applicant shows for this reason, adopts the spring of two suitable coefficients of stiffiness, can guarantee the every application life that spring is independent, and the coefficient of stiffiness of two integral body after the spring stack can be increased, therefore also satisfy coefficient of stiffiness requirement simultaneously to spring.

Improve further, for dead bolt can be commutated, the above-mentioned portion of dragging is a cylindric axostylus axostyle, axostylus axostyle relatively interlock frame front end rotation be arranged in interlock frame front end, have a protruding backward cylindric connecting portion on the described dead bolt rear end face, described axostylus axostyle and connecting portion are fixed; On the outer face of preceding supporting plate, also be fixed with a decorative panel, have the hole that matches and pass with dead bolt profile size on the decorative panel for dead bolt; Before dead bolt stretches out under the state of supporting plate perforate, gapped between dead bolt rear end face and the preceding supporting plate outer face, cylindric connecting portion is also this perforate rotation relatively in the perforate of preceding supporting plate, and simultaneously, the hole that the part at dead bolt rear portion is positioned on the decorative panel rotates in this hole relatively to stop dead bolt.Because it is gapped between the rear end face of dead bolt and the preceding supporting plate, and the connecting portion that is positioned at perforate on the preceding supporting plate is cylindric, like this, but just just lock housing rotation relatively of dead bolt before the supporting plate before decorative panel is fixed on, when dead bolt Rotate 180 °, then just can produce one and be suitable for every bolt that left hand or the right hand grip.

The rear end face of above-mentioned cylindric connecting portion has one and the groove that matches of the front end of axostylus axostyle, the sidewall of connecting portion has the vertical perforation that communicates with groove, described axostylus axostyle front end inserts in the groove, and perforation and axostylus axostyle that an alignment pin passes on the connecting portion sidewall successively are fixed on axostylus axostyle on the connecting portion.This is easier with the mode that axostylus axostyle is connected on the dead bolt, but also can guarantee that alignment pin is positioned at the perforate on the preceding supporting plate, can not influence outward appearance.

Compared with prior art, advantage of the present utility model is: it forms the spring design of the different coefficients of stiffiness in two roads in bolt, the active force of closing the door and opening the door is born by the different spring of the two road coefficients of stiffiness respectively, at closing time promptly, dead bolt is born by the little spring of the coefficient of stiffiness, when opening the door, the interlock frame has the big spring of the coefficient of stiffiness to bear, thus can reach at closing time gentle suitable property and the stability during locking.This bolt also has the advantage that reasonable in design, transmission are stablized, are convenient to assemble.

Description of drawings

Fig. 1 is the vertical view of the utility model embodiment;

Fig. 2 is for removing the lateral view after half lock housing among the utility model embodiment;

Fig. 3 is for removing the transverse sectional view after half lock housing among the utility model embodiment;

Fig. 4 is for removing the longitudinal sectional view after half lock housing among the utility model embodiment;

Fig. 5 is the front elevation drawing of the utility model embodiment;

Fig. 6 removes stereogram after half lock housing for the utility model embodiment;

Fig. 7 is for having the dead bolt perspective view of axostylus axostyle among the utility model embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Shown in Fig. 1～6, be a preferred embodiment of the present utility model.

A kind of tube type latch, comprise a lock housing 1, lock housing 1 is made up of two half relative housings, and this two and half housing is provided with a hole 11, and have an excision portion 12 away from the rear end of preceding supporting plate 2 in lock housing 1, can be assemblied in for handle on the similar item of door or door.

Supporting plate 2 before one, it is fixed on lock housing 1 front end, also has two on the preceding supporting plate 2 and is convenient to the installing hole 21 fixing with decorative panel 6, and the middle part of preceding supporting plate 2 has perforate 22.

One afterbody has the dead bolt 3 of the portion of dragging, as shown in Figure 7, dead bolt 3 is movable pass before on the supporting plate 2 perforate 22 and protrude from lock housing 1, dead bolt 2 is generally the inclined-plane dead bolt, wherein the portion of dragging is a cylindric axostylus axostyle 4, has a protruding backward cylindric connecting portion 31 on described dead bolt 3 rear end faces, the diameter of connecting portion 31 is identical with the thickness of dead bolt 3, described axostylus axostyle 4 is fixing with connecting portion 31, fixed form is: have one and the groove 32 that matches of the front end of axostylus axostyle 4 at the rear end face of cylindric connecting portion 31, the sidewall of connecting portion 31 has and the groove 32 vertical perforation that communicate 33, described axostylus axostyle 4 front ends insert in the groove 32, and perforation 33 and axostylus axostyle 4 that an alignment pin 10 passes on connecting portion 31 sidewalls successively are fixed on axostylus axostyle 4 on the connecting portion 31.

One interlock frame 5, be arranged in the lock housing 1 and also can in lock housing 1, move forward and backward, interlock frame 5 takes the shape of the letter U, described axostylus axostyle 4 relatively interlock frame 5 front ends rotations be arranged in interlock frame 5 front ends, on the outer face of preceding supporting plate 2, also be fixed with a decorative panel 6, have the hole 61 that matches and pass with dead bolt 3 profile sizes on the decorative panel 6 for dead bolt 3.

One driven pulley 7, rotatable being arranged on also can be by it rotates relative to lock housing 1 hand-drive in the lock housing 1, driven pulley 7 comprises the central core district 71 of a column, having a square hole 711 on it wears for the driving shaft on the handle, one actuator 72 is fixed in the central core district 71, actuator 72 at least one sides have the clicking section 721 to outer lug, have a slotted hole 51 on the respective side walls of described interlock frame 5, back edge of slotted hole 51 has the protuberance 52 of outside bending, clicking section 721 is stretched out slotted hole 51 backs and is contacted with protuberance 52, so that driving interlock frame 5, the rotation of driven pulley 7 in lock housing 1, moves forward and backward, corresponding, sidewall in lock housing 1 has a narrow hole 14, described protuberance 52 is arranged in narrow hole 14 to limit the scope that interlock frame 2 moves in lock housing 1, under the state of supporting plate 2 perforates 22, another sidewall inner end of the opposite side of actuator 72 and lock housing 1 is that plane contact is to stop driven pulley 7 backward rotation before dead bolt 3 stretches out.

Before dead bolt 3 stretches out under the state of supporting plate 2 perforates 22, gapped between dead bolt 3 rear end faces and preceding supporting plate 2 outer faces, the perforate 22 of supporting plate 2 and these perforate 22 rotations relatively before cylindric connecting portion 31 is positioned at, simultaneously, the hole 61 that is positioned on the decorative panel 6 of the part at dead bolt 3 rear portions rotates to stop dead bolt 3 relative these holes 61.

The described portion of dragging be the rear end of cylindric axostylus axostyle 4 have one with the rear end face of the interlock frame 5 front ends spacing shoulder block 41 of conflicting, be arranged with the first little spring 8 of a coefficient of stiffiness on the described axostylus axostyle 4, the rear end of first spring 8 is resisted against the front end face of interlock frame 5 front ends, the trend of perforate 22 on the supporting plate 2 before the rear end face that the front end of first spring 8 is resisted against dead bolt 3 has dead bolt 3 to stretch out all the time; Also be fixed with a baffle plate 13 in the described lock housing 1, baffle plate 13 is positioned at interlock frame 5, between baffle plate 13 and interlock frame 5 front ends, be provided with the second big spring 9 of the coefficient of stiffiness, the rear end of second spring 9 is resisted against baffle plate 13 front end faces, and the front end of second spring 9 is resisted against interlock frame 5 front end rear end faces so that interlock frame 5 remains the trend of reach.

Described second spring 9 has two, wherein the external diameter of one second spring 9 is less than the internal diameter of another root second spring 9, the second wherein bigger spring 9 is set in the second less spring 9, and the identical ends of this two second springs 9 simultaneously and baffle plate 13 front end faces conflict, the identical other end of this two second springs 9 is simultaneously and the conflict of the rear end face of interlock frame 5 front ends.

Operating principle of the present utility model and process are such:

Lock housing 1 with bolt during use is placed in the aperture of door of door, and before decorative panel 6 is fixed on by the screw ways of connecting on the supporting plate 2, and handling device is assembled on the door, the driving shaft of handling device is located in the square hole of driven pulley, so swing handle just can drive driven pulley and rotate, this handling device need not reduction torsion spring, and handling device is a prior art, so handling device does not show in the drawings.

At closing time, door-plate is pushed in the doorframe, the end face of dead bolt 3 and doorframe are conflicted, dead bolt 3 overcome first spring 8 elastic force and in contract, because the coefficient of stiffiness of first spring 8 is little, and the coefficient of stiffiness less than second spring 9, therefore, interlock frame 5 not relatively lock housing 1 move forward and backward, first spring 8 has flexible buffer effect preferably, so can be with the action of closing the door of the comparatively soft application of force, play the effect that is easy to close the door and alleviates the bump sound between dead bolt 3 and the doorframe, after the complete closure of door-plate, dead bolt 3 stretches out lock housing 1 and the door bolt hole that enters into doorframe locks under the effect of first spring, 8 restoring forces.

When opening the door, swing handle, handle drives driven pulley 7 and rotates, owing to move after the clicking section 721 of actuator 72 drives interlock frames 5 relative lock housings 1 on the driven pulley 7, moves behind the interlock frame 5 and moves after then can driving the dead bolt 3 that axostylus axostyle 4 reaches with axostylus axostyle 4 links to each other, in the dead bolt 3 indentation lock housings 1, just door can be opened because the coefficient of stiffiness of second spring 9 is big, unclamp handle after, second spring 9 can promote 5 reaches of interlock frame, finally drives handle and is reset to level.

During commutation, decorative panel 6 is taken off, dead bolt 3 is rotated 180 °, again with decorative panel 6 fixing getting final product.

Claims

1, a kind of tube type latch comprises a lock housing;

Supporting plate before one, it is fixed on the lock housing front end;

One afterbody has the dead bolt of the portion of dragging, dead bolt is movable pass before on the supporting plate perforate and protrude from lock housing;

One interlock frame is arranged in the lock housing and can moves forward and backward in lock housing;

One driven pulley, rotatable be arranged in the lock housing and can be by it rotates relative to lock housing hand-drive, this driven pulley links to each other with the interlock frame so that the rotation of driven pulley can drive the interlock frame moves forward and backward in lock housing;

It is characterized in that: described dragging links to each other with dead bolt after portion's front end activity passes the front end of interlock frame, the rear end of axostylus axostyle have one with the rear end face of the interlock frame front end spacing shoulder block of conflicting, described shaft rod upper sleeve is provided with the first little spring of a coefficient of stiffiness, its rear end is resisted against the front end face of interlock frame front end, the trend of perforate on the supporting plate before the rear end face that front end is resisted against dead bolt has dead bolt to stretch out all the time;

Also be fixed with a baffle plate in the described lock housing, baffle plate is positioned at the interlock frame, be provided with the second big spring of the coefficient of stiffiness between baffle plate and interlock frame front end, its rear end is resisted against the baffle plate front end face, and front end is resisted against interlock frame front end rear end face so that the interlock frame remains the trend of reach.

2, tube type latch according to claim 1, it is characterized in that described driven pulley comprises the central core district of a column, having a square hole on it wears for the driving shaft on the handle, one actuator is fixed in the central core district, at least one side of actuator has the clicking section to outer lug, this clicking section and interlock frame sidewall link to each other.

3, tube type latch according to claim 2, a side that it is characterized in that described actuator has the clicking section, described interlock frame takes the shape of the letter U, have a slotted hole on the respective side walls of interlock frame, back edge of slotted hole has the protuberance of outside bending, the clicking section contacts with protuberance after stretching out slotted hole, corresponding, sidewall in lock housing has a narrow hole, described protuberance is arranged in narrow hole to limit the scope that the interlock frame moves in lock housing, under the state of supporting plate perforate, another sidewall inner end of the opposite side of actuator and lock housing is that plane contact is to stop the driven pulley backward rotation before dead bolt stretches out.

4, tube type latch according to claim 1, it is characterized in that described second spring has two, wherein the external diameter of one second spring is less than the internal diameter of another root second spring, the second wherein bigger spring housing is located in the second less spring, and the end that these two second springs are identical is conflicted with the baffle plate front end face simultaneously, and the other end while that these two second springs are identical and the rear end face of interlock frame front end are conflicted.

5, according to the described tube type latch of arbitrary claim in the claim 1～4, it is characterized in that the described portion of dragging is a cylindric axostylus axostyle, axostylus axostyle relatively interlock frame front end rotation be arranged in interlock frame front end, have a protruding backward cylindric connecting portion on the described dead bolt rear end face, described axostylus axostyle and connecting portion are fixed; On the outer face of preceding supporting plate, also be fixed with a decorative panel, have the hole that matches and pass with dead bolt profile size on the decorative panel for dead bolt; Before dead bolt stretches out under the state of supporting plate perforate, gapped between dead bolt rear end face and the preceding supporting plate outer face, cylindric connecting portion is also this perforate rotation relatively in the perforate of preceding supporting plate, and simultaneously, the hole that the part at dead bolt rear portion is positioned on the decorative panel rotates in this hole relatively to stop dead bolt.

6, tube type latch according to claim 5, the rear end face that it is characterized in that described cylindric connecting portion has one and the groove that matches of the front end of axostylus axostyle, the sidewall of connecting portion has the vertical perforation that communicates with groove, described axostylus axostyle front end inserts in the groove, and perforation and axostylus axostyle that an alignment pin passes on the connecting portion sidewall successively are fixed on axostylus axostyle on the connecting portion.