CN1995680A - Movable safety door structure - Google Patents

Abstract

The invention relates to a movable insurance door structure, comprising door frame (1), door plate (2), rotating shaft (3), sliding plate (4) and connecting bar (5). Upper and lower ends of the rotating shaft (3) are connected with door frame (4) reelingly. Centrifugal part (33) is transversely limited at the back of door plate (2) and can rotate relatively to the door plate (2) so that the rotary of rotating shaft (3) can drive transverse movement of door plate (2). The sliding plate (4) is limited at the back of door plate (2) by limiting structure. Driving mechanism (6) and locking mechanism (7) are set between the door plate (2) and the sliding plate (4). Door plate neck (8), in which one side of door plate (2) can be clamped entirely, is set at one side of door frame (1) and if the door plate (2) is clamped in door plate neck (8) the opening and closing of door plate are determined. One end of connecting bar (5) is connected with the sliding plate (4) and the other is connected with the rotating shaft (3) reelingly. The invention is provided with larger locking area, better theftproof performance, simple and reasonable structure and convenience operation. It can be applied in various safe boxes.

Description

Movable safety door structure

Technical field

The present invention relates to a kind of security door, relate in particular to a kind of movable safety door structure, this safety door structure can be used for above various strongboxs, safety cabinet, national treasury door, the rifle cabinet etc.

Background technology

Along with improving constantly of people's living standard, various security doors more and more apply among the daily life.Security door can be applicable to again on various strongboxs, various strong-room and the home-use security door, its structure of existing security door comprises that mainly doorframe, pivot pin are connected the door body on the doorframe and are arranged on bolt structure between a body and the doorframe, have a kind of bolt structure to comprise again to be arranged on a jam plate at the body back side and with the side door door bolt of jam plate interlock, then the respective side bolt offers the door bolt hole on doorframe.And bolt its be cylindric, the cylindrical hole that door bolt Kong Zewei and bolt match.This is fixed together door and doorframe by the cooperation in bolt and door bolt hole.

So be the performance that tightens security, strengthen the firm degree that mutually combines between doorframe and the door body, reach theftproof performance preferably, therefore, a kind of have on, the strongbox of following bolt and side door door bolt is invented, as the patent No. is that the Chinese utility model patent " a kind of safe door structure " of ZL03229270.8 (notification number is CN2613570Y) has disclosed the structure so a kind of, a kind of safe door structure, comprise bolt, following bolt, opposite side bolt and last, following switch block, on described, be respectively equipped with two long slot bores that are triangularly arranged mutually and the fulcrum that switch block is rotated with respect to door-plate on the following switch block, the described bolt of going up, following bolt is respectively by on described, wherein one can provide its long slot bore that moves surplus and last on the following switch block, following switch block is connected, on the described jam plate, downside is then respectively by on described, on the following switch block another can provide its long slot bore that moves surplus and last, following switch block links to each other, and described opposite side bolt links by link gear and jam plate.Therefore, rotation along with lock core, when the drive jam plate moves, switch block and link gear are moved accordingly, thereby upper and lower bolt and side door door bolt is correspondingly stretched in casing, and the door-plate four sides is incorporated on the casing securely, thereby increased the difficulty of being prized, strengthened the safety of strongbox, to satisfy the requirement of people to strongbox.

So all there is defective in the door of existing strongbox: the whole relatively door-plate area of lock face between door bolt head and the door bolt hole is a very little part, no matter what door bolt heads and door bolt hole are arranged, its locking area all is very little, if therefore the lawless person pries open the doorframe of door bolt head part correspondence, just door-plate can be opened; Also have the cooperation of existing security door and doorframe to have the slit, so not only influence outward appearance, and this safety door structure is also prized easily.

In sum, the door of existing strongbox also can improve further.

Summary of the invention

Technical problem to be solved by this invention is at above-mentioned prior art present situation, and a kind of movable safety door structure that provides, this safety door structure has the advantage that the locking area is big, anti-theft effect is better, simple and reasonable, easy to use.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of movable safety door structure comprises a doorframe, one and the door-plate that matches of doorframe; It is characterized in that also comprising that one has rotating shaft, slide plate and the connecting rod of eccentric part; The two ends up and down and the doorframe of rotating shaft are rotationally connected, and the eccentric part cross spacing in the rotating shaft is at the door-plate back side, and can rotate relative to door-plate, laterally move so that the rotation of rotating shaft can drive door-plate; Slide plate is spacing at the door-plate back side by a position limiting structure that it can phase opposite house body end face be moved laterally; Between door-plate and slide plate, be provided with one and can drive the driving mechanism that slide plate is made lateral displacement, and can the decision slide plate relative to the latch-up structure that laterally moves; Have and to snap in door-plate draw-in groove in it on one side fully for door-plate in a side of doorframe, and whether snap in the door-plate draw-in groove according to door-plate and determine the pass of door-plate to open; Connecting rod one end links to each other with slide plate and can move with slide plate, and the other end links to each other so that the mobile of connecting rod can drive the rotating shaft rotation with rotating shaft is rotatable.

Above-mentioned latch-up structure comprises the lock of tongue with lock, and described dead bolt and slide plate gear cooperate, so that stop slide plate laterally to move relative to door-plate under the state of locking.It realizes stoping slide plate to move relative to door-plate, so this locking slide plate is the simplest relative to the structure that door-plate moves by the barrier effect of dead bolt to slide plate; Wherein Suo structure can adopt existing various conventional lock construction, as mechanical lock structures such as blade lock or mechanical code locks, can also adopt electronic lock structure, electronic lock is just different on the mode of unblanking with mechanical lock, as long as can use the key actuated lock construction, get final product with the lock housing of whether stretching out of controlling dead bolt.

The driving mechanism that above-mentioned driven door-plate is made lateral displacement is: be arranged on the door-plate back side and by being located in the shift fork of its rotation of handle drives on the door-plate, the other end of this shift fork links to each other with slide plate and laterally moves relative to door-plate to drive slide plate.This drives structure is the simplest, and the processing of component also is easy to.Certainly also can adopt the structure that drives slide plate on the existing various security doors, as adopting the drives structure of rack-and-pinion, the perhaps drives structure of worm and gear, the frame for movement that rotation can be converted to translation all can be applicable to this.

Above-mentioned door-plate and the position limiting structure between the slide plate are: the long slot bore that has two horizontally sets on slide plate at least, on the door-plate back side, be provided with projection and and the projection that matches of described long slot bore, this projection activity passes that the another side at long slot bore carries out spacing with nut behind the long slot bore.It is the most conventional position limiting structure that projection cooperates with long slot bore, it has advantage simple in structure, easy to assembly, and this position limiting structure has can make the advantage stably of sliding relatively between door-plate and the slide plate, certainly also can adopt and have identity function and similar other existing structure, as a end two guide pillars are set at slide plate, side at door-plate is provided with two guide plates that have to the guide hole of guide pillar guiding, guide pillar passes guide hole, and the cooperation by the post hole is to play the position-limiting action between door-plate and the slide plate.

Has a cascaded surface on the above-mentioned projection, after long slot bore is passed in the projection activity, described slide plate lower surface is positioned on the cascaded surface of projection, has the stop part that is folded to door-plate and carries out the gear cooperation with dead bolt on one side of slide plate, under the state of locking, the side of described dead bolt contacts with gear with the end face of stop part one side.We can be arranged on latch-up structure the gap between slide plate and the door-plate like this, and after soon this latch-up structure is hidden in slide plate, and designs to also help like this lock is pressed close to the door-plate setting, and then convenient fixing each parts such as lockset, slide plate of assembling.

Two ends up and down on one side, the above-mentioned door-plate back side respectively are fixed with one and the door-plate axle sleeve that matches of eccentric part, described rotating shaft activity is plugged in above-mentioned two door-plate axle sleeves, respectively be provided with one and the doorframe axle sleeve that matches of rotating shaft on the upper side frame of doorframe one side and lower frame, the two ends up and down of rotating shaft doorframe axle sleeve respectively are articulated.Adopt the door-plate axle sleeve just can plug rotating shaft cross spacing in it at the door-plate back side, the processing of door-plate axle sleeve is very convenient, and the door-plate axle sleeve is fixed on the door-plate back side also is easy to, and can adopt various fixed forms such as welding; And the doorframe axle sleeve is set on doorframe also can easily rotating shaft and doorframe be articulated on one side.Certainly the door-plate axle sleeve also not necessarily is the ring-type of sealing, and it can also be semi-enclosed ring-type.

Above-mentioned rotating shaft is made up of a concentric shafts and two turning cylinders, described turning cylinder is eccentrically set on respectively on two end faces up and down of concentric shafts, make the concentric shafts upper and lower end form eccentric part, wherein the eccentric part activity is plugged in aforementioned two door-plate axle sleeves, and described two turning cylinders articulate with the doorframe axle sleeve respectively.This pivot structure with eccentric part is the simplest, and concentric shafts and turning cylinder can be an overall structure, but also process concentric shafts and turning cylinder certainly respectively, the mode of turning cylinder by welding is fixed on two end faces up and down of concentric shafts again.

Above-mentioned rotating shaft can also be: comprise concentric shafts, on upper and lower two end faces of concentric shafts, be provided with a turning cylinder respectively with one heart, these two turning cylinders articulate with the doorframe axle sleeve respectively, sidepiece each off-centre in two ends is provided with an eccentric part about concentric shafts, and above-mentioned two eccentric parts activity respectively are plugged in the door-plate axle sleeve.Certainly rotating shaft also can be adopted existing various eccentric part structure.

Compared with prior art, the invention has the advantages that: having one in a side of doorframe can snap in door-plate draw-in groove in it fully for door-plate one side, and look door-plate whether snap in the door-plate draw-in groove and determine the pass of door-plate to open, it changes existing strongbox and locks with one or more door bolt heads and door bolt hole on the doorframe, and lock face of the present invention is the whole side of door-plate one side and the stop surface of door-plate draw-in groove, so big many of the mode that the former relatively useful door bolt head of this lock face locks, the lawless person must pry open the doorframe of door-plate one side fully, just door-plate can be opened, so it has further strengthened the safety of strongbox; This safety door structure only relates to a few parts such as door-plate, doorframe, slide plate, connecting rod, rotating shaft, and these parts all adopt common process and assemble method, so it has advantage simple in structure, easy to assembly.

Description of drawings

Fig. 1 is the schematic perspective view (under the state of closing the door) of the embodiment of the invention;

Fig. 2 is the schematic perspective view (under the door opening state) of the embodiment of the invention;

Fig. 3 is the schematic perspective view (under the door-plate open state) of the embodiment of the invention;

Fig. 4 is that the stereochemical structure of the embodiment of the invention splits schematic diagram;

Fig. 5 is the rear elevation (under the door opening state) of the embodiment of the invention;

Fig. 6 is that the A-A of Fig. 5 is to sectional view;

Fig. 7 is the rear elevation (under the state of closing the door) of the embodiment of the invention;

Fig. 8 is that the B-B of Fig. 7 is to sectional view;

Fig. 9 is the schematic perspective view of another one embodiment shaft of the present invention.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

As described in Fig. 1～4, be first embodiment of the present invention, a kind of movable safety door structure comprises:

One doorframe 1, doorframe 1 is made up of upper side frame 11, lower frame 12, left frame 13 and left frame 14, and doorframe 1 can be independent parts, during use doorframe 1 is fixed on strongbox (cabinet) and upward gets final product, and doorframe 1 also can be the part of whole strongbox (cabinet);

One and the door-plate 2 that matches of doorframe 1, one side of door-plate 2 is assembled on the doorframe 1 rotationally, has the gap of moving between the left edge 13 of door-plate 2 and doorframe 1 for door-plate 2, the front of doorframe 1 also has frame face 15, like this when we are assembled in door-plate 2 on the doorframe 1, frame face 15 can block the gap between door-plate 2 and the left edge 13, and under the state of closing the door, contact between the inner face of the front end face of door-plate 2 and frame face 15, have and to snap in door-plate draw-in groove 8 in it on one side fully for door-plate 2 in a side of doorframe 1, and whether snapping in door-plate draw-in groove 8 according to door-plate 2 determines the pass of door-plate 2 to open, and this door-plate draw-in groove 8 is positioned at that side that door-plate 2 and doorframe 1 junction face, the opening direction of door-plate draw-in groove 8 is corresponding with door-plate 2 sides, close and be locked on the doorframe 1 when one side of door-plate 2 snaps in 8 door-plates 2 of door-plate draw-in groove, at this moment, the limit, the left and right sides of door-plate 2 all is positioned in the frame face 15, withdrawing from 8 door-plates 2 of door-plate draw-in groove when one side of door-plate 2 opens, remove locking with doorframe 1, at this moment, the another side of door-plate 2 still is positioned at frame face 15;

One has the rotating shaft 3 of eccentric part 33, rotating shaft 3 is made up of a concentric shafts 31 and two turning cylinders 32, two turning cylinders 32 are eccentric respectively to be fixed on two end faces up and down of concentric shafts 31, so that on the concentric shafts 31, the lower end forms eccentric part 33, concentric shafts 31 and turning cylinder 32 can be an overall structure, but also process concentric shafts 31 and turning cylinder 32 certainly respectively, again the mode of turning cylinder 32 by welding is fixed on two end faces up and down of concentric shafts 31, two ends up and down on one side, door-plate 2 back sides respectively are fixed with a door-plate axle sleeve 22, this door-plate axle sleeve 22 in the form of a ring or semicircular, on the upper side frame 11 of doorframe 1 one sides and lower frame 12, respectively be provided with a doorframe axle sleeve 13, door-plate axle sleeve 22 and doorframe axle sleeve 16 are positioned at the same side, described two turning cylinders 32 articulate with two doorframe axle sleeves 16 respectively, and eccentric part 33 activities on the described concentric shafts 31 are plugged in aforementioned two door-plate axle sleeves 22, and can rotate relative to door-plate 2, the rotation of rotating shaft 3 can drive door-plate 2 and laterally moves like this;

One slide plate 4, slide plate 4 is spacing at door-plate 2 back sides by a position limiting structure that it can phase opposite house body 2 end faces be moved laterally, position limiting structure between door-plate 2 and the slide plate 4 is: the long slot bore 41 that has two horizontally sets on slide plate 4, the projection 21 that on door-plate 2 back sides, is provided with projection and matches with described long slot bore 41, has a cascaded surface 211 on the projection 21, projection 21 activities are passed long slot bore 41 backs and are carried out spacing at the another side of long slot bore 41 with nut 44, at this moment, slide plate 4 lower surfaces are positioned on the cascaded surface 211 of projection 21, just has certain clearance between slide plate 4 and the door-plate 2 like this, be under the door opening state at door-plate 2, projection 21 is positioned at the high order end of long slot bore 41, door-plate 2 is under door opening state, and projection 21 is positioned at the low order end of long slot bore 41;

One connects the connecting rod 5 of slide plate 4 and concentric shafts 31, this connecting rod 5 takes the shape of the letter U, two ends of connecting rod 5 have installing hole 51, have at slide plate 4 and to have the cylindric connecting portion 43 that an evagination and installing hole 51 match on the external surface, one end of connecting rod 5 is rotatably connected on the connecting portion 43 of slide plate 4 and can moves with slide plate 4, also have a cylindric connecting portion 311 on the sidewall of the middle part of concentric shafts 31, the other end of connecting rod 5 is rotatably connected on the connecting portion 311 of concentric shafts so that laterally moving of connecting rod 5 can drive whole rotating shaft 3 rotations;

Between door-plate 2 and slide plate 4, be provided with one and can drive the driving mechanism 6 that slide plate 4 is made lateral displacement, driving mechanism 6 is: have one handle installing hole 23 on door-plate 2, described handle 61 wears and is spacing in handle installing hole 23, be provided with a shift fork 62 by handle 61 its rotations of driving at door-plate 2 back sides, the other end of this shift fork 62 and slide plate 4 are hinged;

Can also be provided with a decision slide plate 4 between door-plate 2 and slide plate 4 relative to the latch-up structure 7 that laterally moves, latch-up structure 7 comprises the lock 71 of tongue 711 with lock, lock 71 is pressed close to door-plate 2 and is provided with, dead bolt 711 stretches out in the gap of back between slide plate 4 and door-plate 2, described dead bolt 711 and slide plate 4 gears cooperate, so that under the state of locking, stop slide plate 4 laterally to move relative to door-plate 2, wherein the structure of gear cooperation is: one side be folded to door-plate 2 and carry out the stop part 42 that gear cooperates with dead bolt 711 having of slide plate 4, under the state of locking, the side of described dead bolt 711 contacts with gear with the end face of stop part 42 1 sides, barrier effect by 711 pairs of slide plates 4 of dead bolt, realize stoping slide plate 4 to move relative to door-plate 2, the structure of above-mentioned lock 71 can adopt existing various conventional lock construction, as mechanical lock structures such as blade lock or mechanical code locks, can also adopt electronic lock structure, electronic lock is just different on the mode of unblanking with mechanical lock, as long as can use the key actuated lock construction, get final product with the lock housing of whether stretching out of controlling dead bolt.

Of the present invention is and the perpendicular direction of the height of door-plate 2 also to be door-plate 2 moving directions laterally.

The operating principle of the embodiment of the invention and process are such:

As Fig. 5, shown in 6, when opening the door, door-plate 2 draw-in grooves 8 that one side of door-plate 2 snaps on the doorframe 1 are interior with locking, at first key is inserted in the lockhole of lock 71, key does not show in the drawings, key is to drive in the dead bolt 711 indentation lock housings, at this moment, dead bolt 711 loses the position-limiting action to stop part 42 on the slide plate 4, door-plate 2 can move to the direction of opening the door, again to the direction rotary handle 61 that opens the door, handle 61 drives shift fork 62 and rotates with it, will drive the translational sideways movement of slide plate 4 along the relative door-plate 2 of shift fork 62 direction of rotation under the rotation of shift fork 62 drives, and connecting rod 5 laterally moves with slide plate 4, connecting rod 5 drives rotating shaft 3 and rotates, because in the rotating shaft 3, the eccentric part 33 relative doorframes 1 at following two ends are eccentric rotary, and eccentric part 33 is to be plugged in the door-plate axle sleeve 22 that is fixed on door-plate two ends about in the of 2, so that the rotation of rotating shaft 3 can drive door-plate 2 relative doorframes 1 is traversing to (direction of promptly opening the door), one side of door-plate 2 detaches the door-plate draw-in groove 8 on the doorframe 1, and door-plate 2 is rotated to be opened;

As Fig. 7, shown in 8, at closing time, to the direction rotary handle 61 of closing the door, handle 61 drives shift fork 62 with its rotation, under driving, the rotation of shift fork 62 will drive the translational sideways movement of slide plate 4 along the relative door-plate 2 of shift fork 62 direction of rotation, connecting rod 5 laterally moves with slide plate 4, connecting rod 5 drives rotating shaft 3 and rotates, because in the rotating shaft 3, the eccentric part 33 at following two ends is that relative doorframe 1 is an eccentric rotary, so it is traversing to (direction of promptly closing the door) that rotating shaft 3 backward rotation can drive door-plate 2 relative doorframes 1, one side, then key is inserted in the lockhole of lock 71 until the snapping in the door-plate draw-in groove 8 on the doorframe 1 of door-plate 2 with locking, key does not show in the drawings, key is stretched out lock housing to drive dead bolt 711, and at this moment, dead bolt 711 is blocked in stop part 42 front end faces on the slide plate 4, slide plate 4 is limited, just turning handle again.

As shown in Figure 9, be second embodiment of the present invention, the difference of itself and first embodiment is, the difference of pivot structure, described rotating shaft 3 comprises concentric shafts 31, is provided with a turning cylinder 32 respectively with one heart on upper and lower two end faces of concentric shafts 31, and these two turning cylinders 32 articulate with doorframe axle sleeve 16 respectively, concentric shafts about in the of 31 each off-centre of two ends sidepiece be provided with an eccentric part 33 ', above-mentioned two eccentric parts 33 ' activity is plugged in the door-plate axle sleeve 22 respectively.Rotating shaft 3 also can be other similar structure, and as bent axle or the like, no matter which kind of eccentric structure rotating shaft 3 adopts, the operating principle of this security door and process and the foregoing description are equal to.

Certainly also other locking device can be set on door-plate 2, as emergent locking device, it in the protection domain of present patent application, as long as it adopts rotating shaft 3 to drive door-plate 2 laterally moves, all is protection domains of present patent application with the structure that determines switch for security door promptly all.

We also can be changed to blade lock or coded lock with electronic lock or emergent locking device, need not import electronic cipher during work, and all the other courses of work are fixedly moved a strongbox with the electronic type slide plate.

Claims (8)

1, a kind of movable safety door structure comprises a doorframe (1), one and the door-plate (2) that matches of doorframe (1);

It is characterized in that also comprising that one has rotating shaft (3), slide plate (4) and the connecting rod (5) of eccentric part (33);

The two ends up and down of rotating shaft (3) and doorframe (1) are rotationally connected, and eccentric part (33) cross spacing in the rotating shaft (3) is at door-plate (2) back side, and can rotate relative to door-plate (2), laterally move so that the rotation of rotating shaft (3) can drive door-plate (2);

Slide plate (4) is spacing at door-plate (2) back side by a position limiting structure that it can phase opposite house body (2) end face be moved laterally;

Between door-plate (2) and slide plate (4), be provided with one and can drive the driving mechanism (6) that slide plate (4) is made lateral displacement, and can decision slide plate (4) relative to the latch-up structure that laterally moves (7);

Have in a side of doorframe (1) and can supply door-plate (2) to snap in door-plate draw-in groove (8) in it on one side fully, and whether snap in door-plate draw-in groove (8) according to door-plate (2) and determine the pass of door-plate (2) to open;

Connecting rod (5) one end links to each other with slide plate (4) and can move with slide plate (4), and the other end links to each other so that the mobile of connecting rod (5) can drive rotating shaft (3) rotation with rotating shaft (3) is rotatable.

2, movable safety door structure according to claim 1, it is characterized in that described latch-up structure (7) comprises the lock (71) of tongue with lock (711), described dead bolt (711) and slide plate (4) gear cooperate, so that stop slide plate (4) laterally to move relative to door-plate (2) under the state of locking.

3, movable safety door structure according to claim 1, it is characterized in that the described door-plate (2) that drives makes the driving mechanism (6) of lateral displacement and be: be arranged on door-plate (2) back side and drive the shift fork (62) of its rotation by being located in handle (61) on the door-plate (2), the other end of this shift fork (62) links to each other with slide plate (4) and laterally moves relative to door-plate (2) to drive slide plate (4).

4, movable safety door structure according to claim 1, it is characterized in that the position limiting structure between described door-plate (2) and the slide plate (4) is: the long slot bore (41) that has two horizontally sets on slide plate (4) at least, the projection (21) that is provided with projection and matches with described long slot bore (41) on door-plate (2) back side, this projection (21) activity pass long slot bore (41) back and carry out spacing at the another side of long slot bore (41) with nut (44).

5, movable safety door structure according to claim 4, it is characterized in that having a cascaded surface (211) on the described projection (21), after long slot bore (41) is passed in projection (21) activity, described slide plate (4) lower surface is positioned on the cascaded surface (211) of projection (21), have on one side of slide plate (4) be folded to door-plate (2) and and dead bolt (711) carry out the stop part (42) that gear cooperates, under the state of locking, the side of described dead bolt (6) contacts with gear with the end face of stop part (42) one sides.

6, according to the described movable safety door structure of arbitrary claim in the claim 1～5, it is characterized in that two ends up and down on one side, described door-plate (2) back side respectively are fixed with one and the door-plate axle sleeve (22) that matches of eccentric part (33), described eccentric part (33) activity is plugged in above-mentioned two door-plate axle sleeves (22), respectively be provided with one and rotating shaft (3) doorframe axle sleeve (16) on the upper side frame (11) of doorframe (1) one side and lower frame (12), the two ends up and down of rotating shaft (3) doorframe axle sleeves (16) respectively are articulated.

7, movable safety door structure according to claim 6, it is characterized in that described rotating shaft (3) is made up of a concentric shafts (31) and two turning cylinders (32), described turning cylinder (32) is eccentrically set on respectively on two end faces up and down of concentric shafts (31), make concentric shafts (31) upper and lower end form eccentric part (33), wherein eccentric part (31) activity is plugged in aforementioned two door-plate axle sleeves (22), and described two turning cylinders (32) articulate with doorframe axle sleeve (16) respectively.

8, movable safety door structure according to claim 6, it is characterized in that described rotating shaft (3) comprises concentric shafts (31), on upper and lower two end faces of concentric shafts (31), be provided with a turning cylinder (32) respectively with one heart, these two turning cylinders (32) articulate with doorframe axle sleeve (63) respectively, concentric shafts (31) up and down each off-centre of two ends sidepiece be provided with an eccentric part (33 '), above-mentioned two eccentric parts (33 ') activity respectively are plugged in the door-plate axle sleeve (22).

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