JP5413553B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device, and more particularly to a locking device that can reduce noise generated during locking and unlocking.

The present applicant has previously proposed a new lock box for joinery using Patent Document 1 described later.
Although the lock device is incorporated in the lock box for joinery described in this Patent Document 1, the lock device includes a dead bolt guided so as to be movable in the horizontal direction in the lock box, and one end in the lock box. The locking device is well known in the art, and has a sickle piece provided side by side with a dead bolt so as to be able to engage with the engaging hole of the strike together.
JP2008-002058

  The dead bolt in the lock device has a guide mechanism by engagement between a guide elongated hole (indicated by reference numeral 4 in FIG. 2) formed along the length direction of the guide bolt 5 serving also as a column of the lock box, and It is guided by a dead bolt opening and closing hole opened in the front plate so as to be movable in the front-rear direction perpendicular to the front plate.

  However, the locking device has a disadvantage that the end of the guide slot and the guide rod collide with each other for each locking and unlocking to generate noise.

  Accordingly, an object of the present invention is to provide a locking device that does not generate noise at the time of locking and unlocking, thereby eliminating the above-described disadvantages.

  In order to achieve the above object, the invention described in claim 1 is a dead bolt and a cam that is pivotally supported at one end in a lock box and can be engaged together with an engagement hole of a strike together with the dead bolt. The dead bolt has a front plate in the lock box by engaging a guide slot formed along the length direction of the dead bolt and a guide rod extending in the thickness direction of the lock box. As the dead cam that is pivoted by a cylinder lock or thumb turn is operated, the tip of the dead cam protrudes from the front plate of the lock box. The piece is connected by a linkage means consisting of a set of an operating pin protruding from the dead bolt and a long hole provided in the hook piece. A guide block having a guide groove having the same width as the guide long hole is attached to the dead bolt. Hole and guide groove Mounted so that overlap at both ends of the guide groove, wherein a portion is fitted with a damping body in peek into the guide slots.

  In the invention according to claim 1 configured as described above, every time the locking device is locked / unlocked, either one of the pair of shock absorbers mounted at both ends of the guide groove collides with the guide rod. At this time, the shock is buffered by the elastic deformation and vibration of the buffer body, or the internal friction in the buffer body resulting from the vibration, and the desired effect is achieved that noise generation can be eliminated or reduced.

  Compared with the configuration in which the buffer body is wound around the guide rod, the guide rod and the buffer body are only in contact at the end of the deadbolt stroke, and they are not in contact with each other. Thus, there are various effects such as the generation of friction due to the above, and the smoothness of the operation of the deadbolt is not impaired.

  A support block having a guide groove having the same width as the guide long hole is mounted on the dead bolt so that the guide long hole and the guide groove overlap with each other, and a buffer body in which both ends of the guide groove are looked into the guide long hole. As a result, it was possible to construct a deadbolt shock absorber that would not adversely affect the operation of the deadbolt.

Embodiments of the present invention will be described below with reference to the drawings.
1 and 2, reference numeral 1 denotes a lock box, and reference numeral 2 denotes a front plate.

  A dead bolt 3 is guided in the lock box 1 so as to be movable in the vertical front-rear direction of the front plate 2 (left-right direction in FIG. 2).

  In the illustrated embodiment, as shown in FIGS. 1 and 3, the dead bolt 3 is a frame member formed by bending a thick plate into a substantially U shape with the cross section opened upward, and attached to the front plate 2. A dead bolt opening that does not turn, a guide elongated hole 4 (see FIGS. 2 and 4) formed along the length direction of the inner end of the dead bolt, and a guide rod 5 that also serves as a column of the lock box (see FIG. 2) ) And the guide means by engagement with the guide member movably in the front-rear direction.

  On the other hand, the piece 6 is formed by superposing three plates (see FIG. 1), and as shown in FIG. 2, one end (upper end) is pivotally supported in the lock box 1 by a pivot 7. The other end protrudes from the opening of the lock box 1 by swinging the hook piece 6 forward, and engages with a dead bolt 3 that simultaneously protrudes into an engaging hole of a strike (not shown).

  Most of the hook piece 6 is accommodated in the space of the dead bolt 3 having a U-shaped cross section, and the dead bolt 3 and the hook piece 6 are actuated pins 8 projecting from the dead bolt 3. Are connected by a linkage means constituted by a long hole 9 provided in the hook piece 6.

  On the other hand, reference numeral 11 denotes a dead cam supported at the rear portion in the lock box 1, and an operating arm 12 at one end thereof is engaged with a driven notch 13 formed at the rear end portion of the dead bolt 3. The dead cam 11 swings between the pair of stoppers 14 and 14 before and after projecting on the side plate of the lock box 1.

  Further, the dead cam 11 is linked to the inner cylinder and thumb turn (both not shown) of the cylinder lock mounted on the lock box 1, and the key or thumb turn inserted into the cylinder lock is rotated clockwise or counterclockwise. Then, the dead cam 11 is rotated following the rotation of the dead cam 11 and is rotated clockwise in FIG. 2 to lock the dead bolt 3 protruding from the front plate, or is unlocked by rotating counterclockwise. .

  At the same time, the hook piece 6 connected to the dead bolt 3 through the linking means swings around the pivot shaft 7, and the other end (free end) projects similarly from the front plate of the lock box 1.

  In FIG. 2, reference numeral 15 denotes a click lever. The click lever 15 gives a click feeling to the end of the swing of the dead cam 11, but is not related to the present invention. Is omitted.

  In FIG. 2, reference numeral 16 denotes a trigger rod extending in the front-rear direction. The trigger rod 16 opens a cam groove 17 extending in the front-rear direction at the rear end portion, and in the front-rear direction in the lock box 1. It is guided to be movable.

  On the other hand, there is provided a locking rod 18 which is supported and guided so as to be able to swing the front end so as to overlap with the trigger rod 16, and the driven pin 19 implanted in this locking rod is connected to the cam hole 17. Is slidably engaged.

  With the above-described configuration, when the trigger bar 16 protrudes from the front plate 2 when the door is opened, the driven pin 19 is pushed upward by the cam hole 17 and the rear end of the locking bar 18 is not numbered. Since it engages with the notch, it is possible to prevent the dead bolt from protruding due to the combined key or thumb turn.

  Since this trigger device is not the gist of the present invention, further detailed description is omitted.

  A characteristic configuration of the locking device according to the present invention is that a buffer is mounted on the dead bolt 3 as described below.

  In the illustrated embodiment, the shock absorber is attached to the deadbolt 3 via a support block.

  As shown in FIGS. 4 to 6, the support block 21 is a rectangular parallelepiped having a thickness that can be accommodated in the internal space of the dead bolt 3 (see FIG. 3) made of a plate material bent in a substantially U shape. For example, if a synthetic resin is used, the molding process is simple.

  A pin hole 22 for passing a coupling pin and a guide groove 23 having the same width as the guide long hole 4 are formed on the front surface of the support block 21 shown in FIG. The pin hole 22 and the guide groove 23 penetrate the support block in the thickness direction.

  Further, notches 24 are formed at both ends of the guide groove 23, and buffer bodies 25 (see FIGS. 7 and 8) made of, for example, a rubber material are fitted into the notches 24.

  The rectangular block-shaped buffer body has engagement grooves 26, 26 formed on the upper and lower surfaces of the front surface shown in FIG. 7, and these engagement grooves 26, 26 are formed in the notches 24 of the support block shown in FIG. The buffer bodies 25, 25 are fitted into the support block so as to be in sliding contact with the upper and lower edges that maintain the above.

  The support block 21 with the shock absorbers 25, 25 mounted as described above is fitted into the internal space of the dead bolt, and the fixing pin 27 (see FIG. 9) is caulked to the dead bolt, whereby the dead bolt is passed through the support block 21. The buffer bodies 25, 25 are attached to 3.

  At this time, the size of the buffer body is determined so that a part of the buffer body 25 looks into the guide elongated hole 4. Specifically, the dimensions in the left-right direction of the buffer body 25 shown in FIG. 7 are set appropriately.

  Further, as shown in FIG. 6, positioning protrusions 28, 28 are provided on the lower surface of the support block 21, and these are fitted into positioning holes 29, 29 (see FIG. 10) opened on the lower surface of the dead bolt. The support block 21 is securely attached to the dead bolt 3.

  Furthermore, by appropriately setting the size of the shock absorber 25 in the left-right direction in FIG. 8, the movement of the shock absorber 25 to escape from the notch 24 of the support block is prevented by the inner surface of the dead bolt 3.

  The locking device according to one embodiment of the present invention configured as described above is used at the end of the unlocking process from the unlocked state shown in FIG. 2 to the locked state shown in FIG. 9 and at the end of the unlocking process. However, when the dead bolt 3 is suddenly stopped, the guide rod 5 collides with the buffer body 25, so that most of the collision energy is absorbed by the latter elastic deformation or viscoelastic deformation, and noise due to the collision is generated. Lost or greatly relaxed.

  In the present invention, the shock absorber 25 is attached to the dead bolt not by adhesion but by the shape engagement between the engagement groove 26 and the notch 24 of the support block. Since the elastic deformation of the buffer body is not constrained, the buffer efficiency is increased.

The front view of a lock box. In the side view of the locking device by one Example of this invention, an unlocking state is shown. A cross-sectional view of a dead bolt. The front view of a support block. Sectional drawing of a support block. The bottom view of a support block. The front view of a buffer. The side view of a buffer. It is a side view of the locking device similar to FIG. 2, and shows a locked state. The bottom view of a dead bolt.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lock box 2 Front plate 3 Dead bolt 4 Guide long hole 5 Guide rod 6 Cama piece 7 Pivot 8 Actuation pin 9 Long hole 11 Dead cam 12 Actuation arm 13 Driven notch 14 Stopper 15 Click lever 16 Trigger rod 17 Cam hole 18 Locking rod 19 driven pin 21 support block 22 pin hole 23 guide groove 24 notch 25 buffer 26 engaging groove 27 fixing pin 28 positioning projection 29 positioning hole

Claims (1)

  A dead bolt and a hook piece that is pivotally supported at one end in the lock box and installed together with the dead bolt so as to be able to engage with the engaging hole of the strike. In the lock box, it is supported so as to be movable in the front-rear direction perpendicular to the front plate by the engagement of the guide slot formed in this way with the guide rod extending in the thickness direction of the lock box. Along with the operation of the dead cam that is rotated by the thumb turn, its tip protrudes from the front plate of the lock box, and the dead bolt and hook piece are elongated holes provided in the operating pin and hook piece protruding from the dead bolt. A buffer block having a guide groove having the same width as the guide elongated hole is mounted on the dead bolt so that the guide elongated hole and the guide groove overlap with each other. In addition, Part padlock apparatus characterized by mounting the cushion to peek into the guide slots.

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