CN1969105A

CN1969105A - Latch

Info

Publication number: CN1969105A
Application number: CNA2005800182456A
Authority: CN
Inventors: 柯林·悉尼·密得顿
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-27
Filing date: 2005-04-25
Publication date: 2007-05-23
Also published as: GB2413591B; GB0508313D0; WO2005106165A3; GB0409384D0; GB2413591A; WO2005106165A2; TW200602541A

Abstract

A mortice latch has a casing (1), a latch bolt lath (34) mounted in the casing, a latch bolt head (22) mounted on the latch bolt lath (34), a follower (36) arranged to engage the latch bolt lath (34) and designed to receive the spindle of a handle or knob, a spring (43) arranged to act on the follower (36) and a forend (29). One end of the spring (43) is engageable with a retainer (44) which is arranged to extend into the casing (1) to be releasably engaged within the casing and which is accessible from outside the casing through an aperture in the front side wall (2) of the casing (1). The arrangement is such that, after removal of the forend (29), the retainer (44) can be engaged through the aperture and withdrawn from the casing through the aperture, the spring (43) being withdrawn with the retainer (44) so that the spring can be changed without opening the casing (1) or without removing the casing from a door in which the said casing has been fitted.

Description

Lockset

Technical field

The present invention relates to a kind of lockset, particularly a kind of lockset about door knob.

Background technology

Usually traditional shaft-like handgrip mainly is level when not using, handgrip can be rotated with mobile latch lever and enter housing, be opened so that be provided with the door or the similar object of opening of described latch lever, after discharging handgrip, usually its own elastic force makes handgrip get back to the main level position, or if no spring, then follower spring or the assembly by housing drives.

Use the problem of conventional lock to be, when lockset is located at the door-plate of spring, spring strength must meet handgrip weight, if use heavy handgrip, so that handgrip is got back to normal main level position, otherwise handgrip is sagging to avoid the elastic force deficiency for the spring that then must cooperate big loading, and this not only seems not attractive in appearance, and for some housing, the relevant latch lever of this expression may not be engaged in door or other fully can open socket on the framework of body.

On the other hand, only need the light weight handgrip of the spring of light-duty servo-actuated elastic force, if the big weighted spring of installing, handgrip will be difficult to press, especially for the aged or handicapped.

The method that tradition is dealt with problems for open housing and change spring with coincidence gate weight, this will bring inconvenience, and if some assembly drops out the problem complicated and consuming time that housing will cause reorganization.

Existing people proposes to have the lockset of adjusting device with adjustment follower spring tension force, yet, can find on the practice that the elastic force demand difference is very big, make adjustment meet light elastic-type handgrip and the non-elastic-type handgrip of big loading inadequately.

A kind of method of dealing with problems is, extend into the fixedly housing of follower spring with the body or the body of rod, the described body of rod or body pass open-work and are engaged in housing movably and take out from open-work, then follower spring can be taken out outside the housing from same open-work, and it are promptly replaceable to open housing.

Yet in order to open housing, still be necessary housing is moved down to change follower spring from door, this is because open-work is located at the rear side ancient piece of jade, round, flat and with a hole in its centre of housing usually, the factory that manufacturing has the door and window of adaptive lockset and lock bolt increases gradually, and desire removes housing to change suitable follower spring from door and becomes very inconvenient.

Summary of the invention

It is the device of replaceable follower spring that the present invention attempts providing a kind of scheme of dealing with problems, wherein said lock device to have and exempting to open housing or remove from adaptive door-plate.

A purpose of the present invention provides a lockset, it has a housing, one is fixed in the latch lever plate of housing, one is fixed in the latch lever head of latch lever plate, one is engaged in latch lever plate and can holds the follower of the axle of handgrip or door knob, one acts on the spring and a supporting plate of follower, one end of its medi-spring and positioning body engagement, described positioning body extends into housing and is engaged in the housing movably, and can take out from an open-work on the front side wall of housing, after supporting plate removes, positioning body can be nibbled and pass open-work and shift out housing, spring is along with positioning body shifts out, therefore needn't open housing can change spring, after spring is replaced, fixing spring can be put back housing again and is engaged in again in the housing in last positioning body from open-work, and supporting plate is reinstalled housing.

By device of the present invention, the follower spring of lockset can be changed easily, need not open housing or remove housing from the door of installing, only needs to take off supporting plate from the door limit at lockset place and gets final product.

According to one embodiment of the invention, spring is arranged device start with toothed rack in follower, and described toothed rack is located in the housing movably, and the follower part surface has row's double wedge at least, it is arranged to be engaged in the double wedge of toothed rack, and toothed rack and spring engagement.

Another object of the present invention provides a lockset, it has a housing, one is fixed in the latch lever plate of housing, one is fixed in the latch lever head of latch lever plate, one follower and that is engaged in latch lever plate and can holds the axle of handgrip acts on the spring of follower, wherein said spring is arranged start in toothed rack, toothed rack is located in the housing slidably, and wherein the part surface of follower has row's double wedge, for the double wedge that is engaged in toothed rack, toothed rack has projection or indent, to be fit to hold an end of follower spring, and the other end of spring is engaged in positioning body, positioning body is engaged in housing movably, and can positioning body be taken out outside the housing from the open-work of described housing.

Especially, described positioning body is tubulose, shaft-like or similar extended body, and spring to be helical spring be fixed on the positioning body, in the present invention, the open-work in the housing suitably has the hole moulding in shell wall side.

Described shaft-like, tubulose or analog can have external screw thread for the geared assembly engagement that has internal thread in the housing, replacedly, described shaft-like, tubulose or analog can have and insert relevant the be connected with a joggle engagement of juncture for the housing internal engagement device, geared assembly can have the plane of being fixed in housing, and have a hole and extend for spring passes, this is shaft-like simultaneously, tubulose or analog are engageable in hole.

According to preferred embodiment of the present invention, described positioning body comprises that the long-pending body of rod of a circular cross-section is to be suitable for holding helical spring, and an end has the cumulative portion of a diameter, a helical spring end is for being in close proximity to the cumulative portion of described diameter, geared assembly (for example external screw thread or trip tip) suitably is located at the cumulative portion of diameter of the body of rod, and the end face of the body of rod is suitably established at least one groove to be suitable for accepting screwdriver or similar tool.

Description of drawings

Fig. 1 is the front elevation drawing of lockset one embodiment of the present invention;

Fig. 2 is the lateral view that Fig. 1 has the lockset of partial cover plate, and its lockset housing is removed to show internal component;

Fig. 3 is the lateral view of lockset second embodiment of the present invention, and described housing cover is removed and exposes and return or the latch lever head of retracted position and in by the locking bolt of ejected position;

Fig. 4 is the lateral view of the lockset of Fig. 3, but mill shoe be removed and locking bolt in the position of returning or withdrawing; And

Fig. 5 is the lateral view of lockset the 3rd embodiment of the present invention, and described cover plate is removed but demonstrates latch lever plate and locking bolt at ejected position.

Description of reference numerals: 1 housing; 2 sidewalls; 4 cover plates; 5 screws; 6 locking bolts; 7 lock bodies; 8 followers; 9 arm bodies; 10 ridges; 11 control levers; 12 support columns; 16 drop-centers; 17 guide pillars; 18 ridges; 19 flanges; 21 axles; 22 latch lever heads; 23 wear the tip; 24 latch lever springs; 25 projections; 26 inner shoes; 27 open-works; 28 screws; 29 mill shoes; 30 holes; 31 screws; 32 open-works; 34 latch lever plates; 35 upright body; 36 followers; 37 idle rods; 38 square openings; 39 double wedges; 40 depressions; 41 toothed rack; 42 guide rails; 43 springs; 44 positioning bodies; 45 positioning body control panels; 46 prominent points; 47 stick harnesses; 48 stick harnesses; 49 flanges; 50 flights; 51 stick harnesses; 52 positioning bodies; 53 aptamers; 61 lock bolt plates; 62 guide grooves; 65 breach; 66 breach; 67 columns; 68 columns; 69 columns; 70 indents; 71 cams; 72 plate bodys; 73 flutings; 74 flutings; 75 arcuate surfaces; 76 upright body; 77 short columns; 78 springs; 79 sockets; 81 bodies of rod; 82 columns; 83 screws; 84 blocks; 85 bodies of rod; 86 projections; 87 elongated slots; 88 latches; 89 upright body; 94 latch lever plates; 95 upright body; 96 shoulders; 97 columns; 98 major axis; 99 columns; 101 lock bolt plates; 102 grooves; 103 short blocks; 104 recesses; 105 shoulders; 106 prevent body; 107 sluice gates; 108 breach; 111 leaf springs; 112 columns; 113 ogives; 114 keyholes; 115 bodies of rod; 116 columns; 117 circular discs; 118 indents; 121 springs; 122 columns.

The specific embodiment

At first consult Figure 1 and Figure 2, lockset of the present invention, it comprises that one has the housing 1 of cover plate 4, one sidewall 2 of housing 1 is fixed with a tabular inner shoe 26, and a tabular mill shoe 29 is fixed in inner shoe 26 with screw 28, several support columns are fixed in housing 1 and extend upward from it, described support column is provided with internal thread, and cover plate 4 have open-work can be corresponding to the screwed hole in the support column, cover plate is fixed in housing 1 separably with screw 5 by this, inner shoe 26 further has hole 30, and inner shoe can pass hole by screw 31 and be fixed on the door.

One locking bolt 6 is located at housing slidably and is arranged to extend from the sidewall 2 of housing 1 and the guide groove of inner shoe 26 and mill shoe 29, and locking bolt 6 can be controlled by a column lock body 7 that extends through housing 1.

One handgrip follower 8 extends through the axle (not shown) that housing 1 also is suitable for holding door knob, the arm body 9 of follower 8 has a ridge 10, it is arranged to be resisted against a control lever 11 that is hubbed at the support column 12 of housing 1, control lever is arranged to act on latch lever plate (not shown), being connected in a latch lever head 22, when this arrangement is rotated described follower 8 clockwise, as shown in Figure 2, can act on latch lever plate effectively, and make latch lever head 22 indentation housings 1.

Follower 8 further in around be provided with one row double wedge 39, it is engageable in toothed rack 41, it is located at the guide rail 42 in the housing 1 slidably, described toothed rack 41 has a stick harness 47 in the end towards housing 1 the place ahead of sidewall 2, to be suitable for holding an end of coil follower spring 43, the other end of spring 43 is engaged in the stick harness 48 on the spring positioning body 44, the positioning body control panel 45 that described positioning body 44 and is located in the housing 1 combines, described positioning body control panel has a hole that is provided with screw thread, with with relative positioning body 44 combinations that are provided with screw thread, the outboard end of positioning body 44 forms a flange 49, and the external surface of flange has a flight 50.

As shown in Figure 2, when follower 8 to rotate clockwise with withdrawal latch lever head 22, the engagement of double wedge 39 and toothed rack 41 is compressed follower spring 43 with mobile toothed rack to the left side of Fig. 2, usually follower will be rotated by handgrip, if handgrip is decontroled, follower spring 43 voluntarily the application of force with the right side of mobile toothed rack 41 to Fig. 2, by of the engagement of follower 8 upper raised teeths 39 with toothed rack 41, to cause follower 8 to rotate with counterclockwise, as shown in Figure 2, the spinning movement of follower 8 will cause control lever 11 to allow latch lever plate to get back to the position of latch lever head 22 extended configurations, be illustrated in figure 2 as the effect of latch lever spring (not shown).

One open-work 32 is located at inner shoe 26, when mill shoe 29 is removed from inner shoe, then positioning body 44 can pass open-work and be removed, flight 50 can be by screwdriver or other tool engagement that is fit to, and positioning body 44 can be easily hole from the positioning body control panel 45 unclamp, spring 43 is along with positioning body 44 is taken out in housing, then spring can be changed into softer or harder spring to meet corresponding handgrip according to demand, can follow the open-work 32 that passes inner shoe 26 easily and be reinstalled in the housing with the positioning body 44 of new spring, and be engaged in the screwed hole of positioning body control panel 45, as shown in Figure 2, the partial sidewall 2 of housing 1 is regional cut to allow positioning body 44 and spring 43 to be removed housing in positioning body 44, and needn't remove cover plate 4, in case spring 43 is replaced and positioning body 44 is reinstalled in the housing 1, mill shoe 29 can be reinstalled on the inner shoe 26 by screw 28.

Then with reference to Fig. 3 and Fig. 4, this embodiment has a latch lever plate 34, described latch lever plate has the drop-center 16 on the guide pillar 17 that places in the housing 1, the further guiding of latch lever plate 34 is to be finished by ridge 18, ridge 18 extend housing 1 sidewall 2 open-work and enter the open-work 27 of inner shoe 26, the front end of latch lever plate 34 has a flange 19, one axle 21 rotatably is fixed in an open-work of flange 19, latch lever head 22 is worn the end that the tip 23 is fixed in axle 21 by one, and axle 21 other end moulding cooperate to be located at an end of latch lever spring 24, the other end of spring 24 and one is by 25 engagements of moulding projection, projection can extend to form from housing 1 or on guide pillar 17, when inserting, latch lever head 22 passes sidewall 2, the alignment open-work of inner shoe 26 and mill shoe 29 and outstanding from housing.

Latch lever plate 34 also has a upright body 35, the one end extend perpendicularly to latch lever plate 34 the plane and away from latch lever head 22, upright body 35 is by idle rod 37 engagements of extending from handgrip follower 36, follower 36 has a square opening 38, to hold handgrip (not shown) in order to fixing axle (not shown), further has row's double wedge 39 around the follower 36, be located at the toothed rack 41 that is fixed in guide rail 42 in the housing 1 slidably to mesh one, guide rail 42 is fixed in housing 1 bottom, follower spring 43 is positioned at the stick harness 48 of positioning body 44, positioning body 44 is fixed on projection on the positioning body control panel 45 of housing 1 bottom, follower spring 43 acts on an end of toothed rack 41, move to a position to drive follower 36, this will make idle rod 37 be positioned at the position of Fig. 3 icon A, upright body 35 on the latch lever plate 34 will keep engagement with idle rod 37 because of the start of latch lever spring 24, make the position of latch lever head 22 will extend through inner shoe 26 and mill shoe 29, and this position is not shown on the figure.

If handgrip is rotated, described handgrip is fixed in axle and places in the square opening 38 of follower 36, follower will be to pivot clockwise as shown in Figure 3 the left side of mobile toothed rack 41 to Fig. 3 and compress spring 43, simultaneously, idle rod 37 will cause latch lever plate 34 to move to the right side of Fig. 3 with the engagement of upright body 35, be resisted against from housing 1 bottom upwardly extending prominent sharp 46 and stop up to upright body 35, in this position, latch lever head 22 retreat to fully or the housing of withdrawing in, position as Fig. 3, and idle rod 37 is positioned at the position that Fig. 3 indicates B, if handgrip is decontroled, the application of force is by the right side of the double wedge 39 on the follower 36 with mobile toothed rack 41 to Fig. 3 again for follower spring 43, and this will cause follower to pivot with counterclockwise, as shown in Figure 3, and rotation idle rod 37 to Fig. 3 indicates the position of A, simultaneously, latch lever spring 24 will rotate latch lever head 22 to outstanding or extended position, and the upright body 35 on the latch lever plate 34 will keep with idle rod 37 against.

Latch lever plate 34 has a ridge 18, its by the open-work on the inner shoe 26 27 and often against mill shoe 29 with restriction latch lever head 22 extending out from housing, the latch lever head can be via unclamping screw 28 and removing mill shoe 29 and withdraw from the other way around, then ridge 18 will stretch out inner shoe 26, as shown in Figure 4, and latch lever head 22 will be known and be exposed to outside the inner shoe, therefore the latch lever head can be rotated 180 degree and rotary head easily, because fixedly the axle 21 of latch lever head 22 is rotatably to be fixed in latch lever plate 34, then, mill shoe 29 can be put back again, and against and force in ridge 18, make ridge setback housing 1, and latch lever head 22 will then be positioned at the open-work of inner shoe 26 and avoid the latch lever head to rotate.

Lockset shown in Fig. 3 and 4 also will have a locking bolt 6 by 7 controls of column lock body, locking bolt 6 is fixed in the housing 1 slidably, and extend the sidewall 2 of housing 1, alignment open-work on inner shoe 26 and the mill shoe 29, locking bolt 6 has a lock bolt plate 61, it comprises a guide groove 62 and a pair of

breach

65,66, one

column

67,68 extend upward from housing 1 bottom and are positioned at the guide groove 62 of lock bolt plate 61, has the effect that guiding locking bolt 6 slides, one plate body 72 is fixed in housing 1 slidably and has fluting 73,74 and one arcuate surface 75, column 68 extends through fluting 73, and another column 69 that is fixed in housing 1 bottom extends another fluting 74, after inserting housing, arcuate surface 75 will be positioned at plate body 72 than low edge, plate body further has a upright body 76, described upright body 76 can be resisted against breach 65 in the ejection of locking bolt shown in Figure 36 or when extending the position, when returning or retract the position, locking bolt shown in Figure 46 is resisted against breach 66, one helical spring, 78 1 ends are resisted against plate body 72, the other end is resisted against the guide rail 42 of toothed rack 41, can promote plate body 72 direction down, spring 78 is positioned on the short column 77 of the socket 79 of guide rail 42 and plate body 72, one body of rod 81 is hubbed at the column 82 in the housing 1 and is resisted against the rear surface of locking bolt 6, column lock body 7 (not being shown in Fig. 4) is fixed in the housing 1 on the position by a screw 83, and screw 83 passes inner shoe 26 and housing sidewall 2 and by being fixed in housing 1 bottom, block 84 engagements with screwed hole.

By inserting that a key is gone into column lock body 7 and as the counterclockwise key of Fig. 3 and Fig. 4, then locking bolt can be return or retracted position moves to shown in Figure 3 stretching out or ejected position from shown in Figure 4, this will make the cam 71 of column lock body rotate with counterclockwise, and initial cam 71 will be resisted against the upwards elastic force of antagonistic spring 78 of plate body 72 also mobile plate bodys 72, this action will make upright body 76 shift out the breach 66 of lock bolt plate 61, simultaneously, cam 71 enters the continuous rotating motion of the indent 70 of lock bolt plate 61 and cam 71 with mobile lock bolt plate 61 to Fig. 3 left sides, cam 71 also is resisted against the body of rod 81 that is hubbed on column 82 and effectively locking bolt 6 is moved to ejected position shown in Figure 3 from retracted position shown in Figure 4, when locking bolt 6 arrives ejected position, cam 71 shifts out the engagement of plate body 72, spring 78 application of force again enters breach 65 with the upright body 76 on the mobile plate body 72, and pin is bolted at ejected position.

Reach to illustrate key clockwise by key being inserted column lock body 7, locking bolt 6 can be moved on to retracted position shown in Figure 4 from ejected position shown in Figure 3, this will make cam 71 to rotate clockwise, and cam 71 will be resisted against plate body 72, and mobile plate body 72 produces the upwards effect of antagonistic spring 78, this moves and will make upright body 76 shift out the breach 65 of lock bolt plate 61, continue the indent 70 that key enters translating cam 71 lock bolt plate 61, and the lasting rotation of cam 71 is with the right side of mobile lock bolt plate 61 to Fig. 3 and Fig. 4, when locking bolt 6 arrives retracted position shown in Figure 4, cam 71 leaves indent 70 and breaks away from the contact of plate body 72, spring 78 is the application of force again, upright body 76 with mobile plate body 72 enters breach 66, with the locking locking bolt in retracted position.

Locking bolt also can be moved by the additional rotation of key, the body of rod 85 is articulated in projection 86 and follower 36, and has an elongated slot 87, described elongated slot 87 is positioned at the latch 88 that extends from lock bolt plate 61, the body of rod 85 has a upright body 89 in the end away from pivoting point, when locking bolt is moved to retracted position by the cam 71 of column lock body 7, and work as key once more to rotate clockwise, cam 71 will be resisted against the upright body 89 of the body of rod 85 and the body of rod 85 that moves up, 87 li latches 88 of elongated slot against guiding the body of rod, and when the body of rod moves up, to cause follower 36 with rotation clockwise, as shown in Figure 4, this causes idle rod 37 to move latch lever plate 34 to the right side, by idle rod 37 and upright body 35 against, to make 22 withdrawals of latch lever head, key then can be turned round, and then cam 71 breaks away from from upright body 89, and under the effect of follower spring 43, follower 36 can be got back to its normal position.

Operating handle follower 36 is to return latch lever head 22 did not influence locking bolts, because follower 36 is to be pivoted, the body of rod 85 can move with follower freely, and the elongated slot 87 of the body of rod 85 freely moves along latch 88.

Embodiment as shown in Figures 1 and 2, inner shoe 26 has an open-work 32 and passes, after mill shoe 29 removes from inner shoe 26, positioning body 44 can be removed, the outer end of positioning body 44 has a flange 49, its external surface has flight, in case mill shoe is removed, flight on the flange 49 of positioning body 44 can be by screwdriver or other suitable tool engagement, and positioning body 44 can be unclamped and taken out by the open-work 32 from inner shoe 26 from the open-work of positioning body control panel 45 like a cork, one end of spring 43 is fixed in the stick harness 48 that positioning body 44 is convexly equipped with, and along with positioning body 44 takes out from housing, spring can be replaced by softer or harder spring according to need, then, by the open-work 32 that passes inner shoe 26, cooperate the positioning body 44 of new spring to be put back housing again, and be engaged in positioning body control panel 45, in case spring is replaced, positioning body 44 can be adapted in the housing 1 again, and then the mode by lock screw 28 can adapt to inner shoe 26 again with mill shoe 29.

Embodiment as shown in Figure 5 is different from Fig. 1,2, embodiment shown in 3 and 4, in this embodiment, latch lever plate 94 does not have the ridge 18 that is same as other embodiment, but having a upright body 95 is abutted against by the idle rod 37 of handgrip follower 36, follower 36 also has row's double wedge 39 and is engaged in toothed rack 41, toothed rack 41 is fixed in the guide rail 42 of housing 1 slidably, follower spring 43 acts on toothed rack 41, embodiment as Fig. 3 and 4, spring 43 acts on follower 36 and will cause follower to rotate with counterclockwise, as shown in Figure 5, a major axis 98 is resisted against the rotating range that idle rod 37 will limit follower.

In this embodiment, follower spring 43 is that the depression 40 and its other end that are positioned at toothed rack 41 are meshed by the stick harness on the positioning body 52 51, positioning body 52 has ridge portion, with with the sidewall 2 of housing on aptamers 53 to insert the juncture engagement, the external surface of positioning body 52 has flight can be rotated it, when adaptive, the major part of positioning body 52 is positioned at the open-work 32 of inner shoe 26, if when needing to change follower spring 43, mill shoe 29 as above-mentioned being removed, and with flight and the positioning of rotating body of a tool engagement in positioning body 52, and make the ridge portion of positioning body break away from aptamers 53, then, the positioning body 52 that is fixed with spring 43 can take out from housing, and spring can change spring softer or more firmly according to need into, by passing spring and the open-work 32 by inner shoe 26, place the interior depression 40 of toothed rack 41 up to the medial extremity of spring, then changing the positioning body 52 of new spring is put back in the housing again, then spring is compressed in the open-work that positioning body 52 enters inner shoe 26, when positioning body is rotated, then its ridge portion is engaged in aptamers 53 once more, and mill shoe can then be put inner shoe 26 with screw 28 locking modes again.

Adapt to the handgrip of axle (not shown) end by rotation, described axle extends through the square opening 38 of follower 36, latch lever head 22 can be by the position that moves on to withdrawal or return from the extended position that shows as Fig. 5, this will make and be resisted against upright body 95 by idle rod 37, the right side of the mobile latch lever plate 94 to Fig. 5 of follower 37 rotations, the shoulder 96 that latch lever head 22 will continue to move up to latch lever plate 94 is resisted against the column 97 outstanding from housing 1 bottom, simultaneously, when the latch lever head is moved into the right side, toothed rack 41 is moved to as shown in Figure 5 left side with compression follower spring 43, the release of handgrip make spring 43 again the application of force to rotate follower 36 and latch lever to position shown in Figure 5.

In this embodiment, via removing mill shoe 29, latch lever head 22 can be by conversion direction easily once more, yet, in this example, when mill shoe is removed, the spring 43 that acts on follower 36 through toothed rack 41 will make idle rod 37 move major axis 98 and the outstanding housing of part, break away from upright body 95 on the latch lever plate 94 fully up to follower 37, the spring 24 that acts on the latch lever head then acts on and mobile latch lever head 22 disengaging inner shoes 26, because the axle 21 that is fixed on the latch lever head 22 is fixed on the latch lever plate 94 in rotatable mode, by the Rotate 180 degree, latch lever head 22 can be converted direction, latch lever head 22 must then be pushed back in the housing, the elastic force of antagonistic spring 24 and mill shoe 29 are reinstalled, then because of major axis 98 once more against idle rod 37, the upright body 95 of latch lever plate 94 once more by idle rod 37 against.

Lockset shown in Figure 5 also has a locking bolt 6, it is operated by locating lock body again, it is key operated by one to locate lock body again, locking bolt 6 has a lock bolt plate 101 that is provided with groove 102, the column 99 that is fixed in housing 1 bottom passes groove and extends so that the guiding of locking bolt to be provided, short block 103 extends from lock bolt plate 101, and by several prevention bodies 106 (only showing) in Fig. 5, prevent body to be articulated in the interior column 112 of housing, and be contacted with the ogive 113 that is looped around keyhole 114 by leaf spring 111 application of forces individually, the body of rod 115 is articulated in the column 116 that is fixed on housing 1 bottom, and be arranged to be resisted against the shoulder 105 of lock bolt plate 101 and meshed by key with method described later, indent 118 around one circular discs 117 is surrounded on ogive 113 and has one, it is by a curved end engagement of being fixed in the spring 121 of column 122, column 122 is fixed on housing 1 bottom, and the other end of spring 121 is resisted against the sidewall of housing 1.

Fig. 5 shows that a locking bolt 6 is in the position of ejecting or stretching out, in order to make locking bolt 6 withdrawal housings 1, key must be inserted keyhole 114, and key clockwise with Fig. 5, when key turns, it will at first lift the prevention body against the effect of preventing body 106 and opposing leaf spring 111, the position of preventing body to be moved to can allow the short block 103 on the lock bolt plate enter the sluice gate 107 of preventing body 106, simultaneously, key enter on the lock bolt plate 101 a recess 104 and against lock bolt plate 1, key further rotates and causes lock bolt plate 101 to move to right side shown in Figure 5, be engaged in recess 104 by key, so short block 103 moves along the sluice gate 107 of preventing body 106, move and to last till that locking bolt 6 outer ends and mill shoe 29 trim just and stop, cut off the contact of lock bolt plate 101 and prevention body 106 in this key, sluice gate 107 has a breach 108 in medial extremity, when key cut off to prevent body 106 against, spring 111 starts are so that prevent body 106 to pivot downwards, so the short block 103 on the lock bolt plate 101 is engaged in breach 108 and locking bolt is maintained at retracted position.The rotation of key continues to carry out to get back to the position that Fig. 5 shows up to keyhole can break away from key from lockset, though only one prevent body 106 to be shown in Fig. 5, but in fact lockset can have more than one prevention body, is generally five, but more or less can the change on demand.

For mobile locking bolt to the position of ejecting or stretching out, at first, key must insert keyhole 114 and key with the anticlockwise of Fig. 5 rotation, key prevents body 106 to make breach 108 break away from short block 103 with meshing earlier and lifting, simultaneously, key enters the indent 104 of lock bolt plate 101, and mobile lock bolt plate and locking bolt 6 to Fig. 5 left sides, along with continuing to rotate, key is resisted against the body of rod 115, it is resisted against the shoulder 105 of lock bolt plate, and because the change of angle increases the outstanding of locking bolt, key further rotation makes its engagement that breaks away from the body of rod 115 and prevent body 106, and therefore spring 111 can make continuous prevention body 106 pivot and be engaged in short block 103 downwards, and pin is bolted at the ejected position that Fig. 5 shows.

Hence one can see that, lockset of the present invention will overcome the problem of existing lockset, and the spring that reinstalls can meet the relevant handgrip that is used in lockset fully, and need and change according to the use of different handgrips, need not open the housing of lockset and need not remove the lockset housing from the door at lockset place.

The present invention is defined in the foregoing description, but any modification or variation connect and do not break away from category of the present invention, for example the screw thread combination of positioning body 44 can be substituted by inserted mode 52,53 as shown in Figure 5, spring 43 suitably is closely tied on the short column, so spring will take out from housing along with positioning body 44, and need not worry that spring comes off and falls in the housing and must remove cover plate and take out, and then, lockset can need not to use the cylinder lock operation by the control of body of rod security system.

Claims

1. a lockset, it is characterized in that, has a housing, one is fixed in the latch lever plate of housing, one is fixed in the latch lever head of latch lever plate, one follower holds the axle of handgrip or door knob for being resisted against latch lever plate and confession, one is made for a spring and a supporting plate that is used for follower, one end of its medi-spring is resisted against an object, it extends into housing and is resisted against in the housing in separable mode, described object can pass open-work on the front side wall of housing to take out outside the housing, after supporting plate removes, passing open-work is engaged described object, spring can make spring be replaced along with object is removed so need not open housing.

2. lockset according to claim 1, it is characterized in that: described spring acts on follower by the toothed rack structure, described toothed rack is to be located at housing movably, the part surface of follower can have row's double wedge for the double wedge that is engaged in toothed rack, and described toothed rack is meshed by spring.

3. lockset according to claim 2 is characterized in that: toothed rack has a projection, holds the other end of spring.

4. lockset according to claim 2 is characterized in that: toothed rack has a sealing opening or an indent, holds the other end of spring.

5. lockset, it is characterized in that, has a housing, one is located at the latch lever plate in the housing, one is located at the latch lever head on the latch lever plate, one follower for be resisted against latch lever plate and hold the axle of handgrip and a follower spring for acting on follower, its medi-spring is made for the toothed rack that is used for being located at slidably housing, and wherein the part surface of follower has row's double wedge to be engaged in the double wedge of toothed rack, toothed rack has the end that projection or indent are suitable for holding follower spring, and the other end of follower spring is resisted against an object, and it is resisted against housing and its separatably can be from the open-work of housing by being removed outside the housing.

6. according to the described lockset of above-mentioned each claim, it is characterized in that: described object has external screw thread, the internal thread of engageable geared assembly on housing.

7. according to each described lockset in the claim 1 to 5, it is characterized in that: described object has the insertion juncture, and the correspondence that described insertion juncture is engageable geared assembly on housing is inserted juncture.

8. according to claim 6 or 7 described locksets, it is characterized in that: but described geared assembly is to be located at the plate body of housing and to have the open-work that an ammunition feed spring extended through and made described object engagement.

9. each described lockset in requiring according to aforesaid right is characterized in that: described object be shaped as the shaft-like or similar elongate objects of tubulose.

10. according to each lockset in the claim 1 to 5, it is characterized in that: described object comprises the body of rod of a circular cross-section, holds described spring, and has the cumulative portion of a diameter, its for end next-door neighbour of described spring against.

11. lockset according to claim 10 is characterized in that: described geared assembly is the cumulative portion of diameter that is located at the body of rod.

12. lockset according to claim 11 is characterized in that: described geared assembly comprises an external screw thread or inserts sticker, and it is located at cumulative of the diameter of the body of rod and is engaged in the internal thread of the relative geared assembly of being located at housing or inserts indent.

13. lockset according to claim 12 is characterized in that: the geared assembly in the housing is a plate body of being located at housing bottom, but and have an open-work ammunition feed spring and pass, and it is engageable in open-work to be positioned at the geared assembly of the cumulative portion of body of rod diameter.

14. according to each described lockset in the aforesaid right requirement, it is characterized in that: spring is a helical spring.

15. a lockset, it cooperates the 1st figure and the 2nd figure or the 3rd figure and the 4th figure or the 5th figure in this essence explanation of doing.