JP5246787B2 - Cylinder lock - Google Patents

Description

  The present invention relates to a cylinder lock that restricts entry of foreign matter such as dust from a keyhole.

  In this type of cylinder lock, when dust or rainwater enters from the keyhole, dust may accumulate in the cylinder of the lock body, or rust may be generated in the cylinder, resulting in inconvenience that locking and unlocking cannot be performed. is there. Therefore, in this type of cylinder lock, there is one in which the keyhole is covered with a dustproof shutter or cap in order to prevent foreign matter from entering from the keyhole.

  For example, an inner cylinder provided with a key hole and an openable / closable shutter that covers the key hole of the inner cylinder are provided, and in a normal state in which the key is not inserted into the key hole, the key hole is covered by the shutter. Intrusion is restricted, and when the stem is inserted into the keyhole by opening the shutter with the key stem and the inner cylinder is rotated, the shutter rotates integrally with the inner cylinder to perform the locking / unlocking operation. (See Patent Document 1).

JP 2003-129706 A (paragraphs [0010] to [0031], FIGS. 1 to 4)

  In the cylinder lock as described above, the intrusion of foreign matter caused by nature such as rain water or dust can be regulated by a shutter. However, the foreign matter attached to the key can be inserted into the keyhole. There was a problem that it could get into the cylinder together.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is not only to restrict the entry of foreign matter caused by nature but also to restrict the entry of artificial foreign matter attached to the key. We are offering cylinder locks.

In order to achieve this object, the present invention provides a lock body having a cylinder hole, a cylinder rotatably supported in the cylinder hole of the lock body and provided with a key hole, and a key inserted into the key hole of the cylinder. in cylinder locks with bets, wherein the elastically deformable removing brush in sliding contact with the key inserted into the keyhole, and a support piece this removal brush is supported mounted on the cylinder, the support piece, the A space for allowing the key inserted from the key hole to pass therethrough is formed, and the removal brush is formed of a wire material having a large number of spring properties, and the key insertion of the support piece is performed so as to face each other with the space interposed therebetween. Attached to the front and rear surfaces in the direction, and of the removal brush, the front surface and the rear surface in the key insertion direction of the support piece The removal brush attached to any one of these surfaces is constituted by a pair of wire rods provided in the short side direction of the keyhole, and the wire rods forming these wire rod groups are oriented in the short side direction of the keyhole, In addition, the base members are arranged side by side in the long side direction of the keyhole, and the base members of the pair of wire members are arranged at the edge of the space so that their free ends face each other with a space therebetween. The removal brush attached to the other surface of the front surface and the rear surface is constituted by a pair of wire rods provided in the long side direction of the keyhole, and forms these wire rod groups. The wire is oriented in the long side direction of the keyhole and is arranged in parallel in the short side direction of the keyhole, and the wire members of the pair of wire groups face each other with their free ends facing each other with a gap therebetween. in, that the proximal end is attached to the edge of the space A.

  According to the present invention, in a normal state in which the key is not inserted into the keyhole, the keyhole is covered with the removal brush, so that intrusion of foreign matter such as rainwater and dust from the keyhole is restricted and removed when the key is inserted into the keyhole. Since the brush is in sliding contact with the key, the intrusion of foreign matter attached to the key from the key hole can be restricted.

It is a perspective view which decomposes | disassembles and shows the cylinder lock used as the reference of this invention. It is a perspective view of a cylinder lock used as a reference of the present invention. The removal brush in the cylinder lock used as the reference of this invention is shown, The figure (A) is a perspective view, The figure (B) is a top view, The figure (C) is a front view, The figure (D) is a side view. is there. It is the IV-IV sectional view taken on the line in FIG. In the cylinder lock used as the reference of this invention , it is a sectional side view which shows the state which inserted the key in the keyhole. In the cylinder lock used as the reference of this invention , it is a sectional side view which shows the state which passed the key through one removal brush. In the cylinder lock used as the reference of this invention , it is a sectional side view which shows the state which passed the key through both removal brushes. An embodiment of the removing brush of the present invention shows, Fig (A) is a plan view, FIG. (B) is a front view, FIG. (C) is a side view, and FIG. (D) is a rear view, and FIG. (E) is a cross-sectional view taken along line VIII (E) -VIII (E) in FIG.

First, a technique to be a reference of the present invention will be described with reference to FIGS.
[ Reference example ]

  1 and 5, the cylinder lock generally indicated by reference numeral 1 has a cylinder body 3 with a cylinder hole 3 formed in the center thereof, and the cylinder body 3 formed in a substantially cylindrical shape. 2, a cylinder 4 that is fitted and is rotatably supported in the cylinder hole 3, is provided with a key hole 5 having a long and narrow cross section, and is formed in a substantially cylindrical shape, and the cylinder 4 includes a key 6 in which a stem 7 is inserted into a key hole 5 and removal brushes 8A and 8B that remove foreign matters attached to the key 6. The keyhole 5 is formed in a rectangular shape having a long side 5a and a short side 5b.

  In such a configuration, the cylinder lock 1 is unlocked when the long side 5a of the keyhole 5 of the cylinder 4 is oriented in the vertical direction (in the direction of arrows AB in the figure) as shown in FIG. ing. On the other hand, in this state, the stem 7 of the key 6 is inserted into the keyhole 5, the key 6 is rotated clockwise by about 90 °, and the cylinder 4 is rotated clockwise by 90 °. The cylinder lock 1 is locked by directing the side 5a in the horizontal direction (the direction of the arrow CD in the figure).

Next, the removal brush will be described with reference to FIG. In the figure, 9 is a support piece formed in a flat, substantially rectangular parallelepiped that supports the removal brushes 8A and 8B, and the lower part through which the stem 7 of the key 6 inserted into the keyhole 5 passes is opened at the center. A rectangular space 11 is provided. The opened lower portion of the space 11 functions as a discharge port 12 for discharging foreign matter removed by the removal brushes 8A and 8B. An upper surface of the support piece 9 forms an arcuate engagement surface 13 having the same curvature as the inner peripheral surface of the cylinder hole 3, and engagement projections 14, 14 project from both ends of the engagement surface 13. Has been.

  The removal brushes 8A and 8B are constituted by a pair of wire groups 16A and 16B formed by a large number of elastically deformable wires 15 having spring properties. Among these, the removal brush 8 </ b> A is attached to the front F surface in the insertion direction (arrow E direction) of the key 6 of the support piece 9. The wire 15 forming the wire group 16A of the removal brush 8A is oriented in the direction of the short side 5b (arrow C-D) of the keyhole 5 in a state where the removal brush 8A is attached to the cylinder 4 as will be described later. And the base end is attached to the edge 11a of the space 11 so that the free end may face the space 11 in parallel with the long side 5a direction (arrow AB direction) of the keyhole 5.

  The wire 15 that forms the wire group 16B of the removal brush 8A is oriented in the direction of the short side 5b (arrow CD direction) of the keyhole 5 and is arranged in parallel in the direction of the long side 5a of the keyhole 5 (arrow AB direction). The base end portion is attached to the edge 11 b of the space 11 so that the free end faces the space 11. The mutual free ends of the wire rods 5 and 5 of the pair of wire rod groups 16A and 16B of the removal brush 8A thus configured are the thickness of the stem 7 of the key 6 (corresponding to the length of the short side 5b of the key hole 5). It is opposed with a smaller interval δ1.

  On the other hand, the removal brush 8B is attached to the rear R surface in the insertion direction (arrow E direction) of the key 6 of the support piece 9. The wire 15 forming the wire group 16A of the removal brush 8B is oriented in the direction of the short side 5b (arrow C-D direction) of the keyhole 5 with the removal brush 8B attached to the cylinder 4, and the keyhole 5 The base end portion is attached to the edge 11 c of the space 11 so that the free end faces the space 11.

  The wire 15 forming the wire group 16B of the removal brush 8B is oriented in the direction of the short side 5b (arrow CD direction) of the keyhole 5, and is arranged in parallel in the direction of the long side 5a of the keyhole 5 (arrow A-B direction). The base end portion is attached to the edge 11 d of the space 11 so that the free end faces the space 11. The free ends of the wire rods 5 and 5 of the pair of wire rod groups 16A and 16B of the removal brush 8B configured as described above are opposed to each other with an interval δ1 smaller than the thickness of the stem 7 of the key 6.

  Next, a structure for attaching the removal brushes 8A and 8B thus configured to the cylinder 4 will be described with reference to FIG. In the vicinity of the inlet end of the keyhole 5 of the cylinder 4, a groove 17 is provided that extends in the diameter direction and inserts the support piece 9 as shown in FIG. 4. Engaged portions 18, 18 that engage with the engagement protrusions 14, 14 of the support piece 9 are provided on both sides. The lock body 2 is provided with a discharge hole 19 corresponding to the groove 17 and communicating with the discharge port 12 of the support piece 9 inserted into the groove 17 and communicating with the outside.

  In such a configuration, when the support piece 9 is inserted into the groove 17 of the cylinder 4, the engaging portion 14 of the support piece 9 is engaged with the engaged portion 18 of the groove 17. In this state, when the cylinder 4 is inserted into the cylinder hole 3 of the lock body 2, the engagement surface 13 of the support piece 9 comes into contact with the inner peripheral surface of the cylinder hole 3 of the lock body 2. Accordingly, the support piece 9 is restricted from being removed from the groove 17 by the lock body 2, and the support piece 9 rotates integrally with the cylinder 4 by the engagement of the engaging portion 14 and the engaged portion 18. .

  As described above, when the support piece 9 is attached to the cylinder 4, the keyhole 5 is covered with the removal brushes 8 </ b> A and 8 </ b> B, so that intrusion of foreign matters due to nature such as rainwater and dust into the keyhole 5 is restricted. Further, since the support piece 9 is detachably attached to the groove 17 of the cylinder 4, the discharge brushes 8A and 8B can be easily replaced by removing the cylinder 4 from the cylinder hole 3 of the lock body 2. .

  Next, with reference to FIGS. 5 to 7, the foreign substance removing operation in the thus configured cylinder lock will be described. As shown in FIG. 5, the key 6 is moved in the direction of arrow E, the stem 7 is inserted into the key hole 5 of the cylinder 4, and the tip of the stem 7 is brought into contact with one removal brush 8A. Further, by moving the stem 7 of the key 6 in the direction of arrow E, as shown in FIG. 6, the tip of the stem 7 passes through one removal brush 8A and comes into contact with the other removal brush 8B.

  At this time, the mutual free ends of the wire members 5 and 5 of the pair of wire member groups 16A and 16B constituting one removal brush 8A face each other with an interval δ1 smaller than the thickness of the stem 7 of the key 6. Therefore, when the stem 7 passes between the wire groups 16A and 16B, the wire 5 comes into sliding contact with the surface of the stem 7 while being elastically deformed. Therefore, the foreign material 20 adhering to the surface of the stem 7 is scraped off by the wire 5.

  From this state, by further moving the stem 7 of the key 6 in the direction of arrow E, the tip of the stem 7 passes through the other removal brush 8B as shown in FIG. At this time, the wire 5 of the wire group 16A, 16B constituting the removal brush 8B is in sliding contact with the surface of the stem 7 while being elastically deformed in the same manner as when passing through one removal brush 8A. Therefore, the remaining foreign matter 20 that adheres to the surface of the stem 7 and has not been scraped off by the removing brush 8A is scraped off by the wire 5 of the removing brush 8B.

  In this way, the removal brushes 8A and 8B are attached to the front and rear surfaces of the support piece 9 in the key insertion direction (arrow E direction) so as to face each other with the space 11 in between. 7 is reliably scraped off by the wire 5. The foreign matter scraped off by the removal brush 8B is discharged to the outside of the cylinder lock 1 through the discharge port 12 of the support piece 9 and the discharge hole 19 of the lock body 2.

In the reference example described above, the removal brushes 8A and 8B are attached to the front and rear F surfaces and G surface of the support piece 9 in the key insertion direction. You may make it attach to any one surface of a front side and a rear side.
[ Embodiments of the present invention ]

Next, an embodiment of the present invention will be described with reference to FIG.

The support piece 109 of this embodiment is different from the support piece 9 of the reference example described above in that a discharge port 112 for discharging the foreign matter 20 removed by the removal brushes 8A and 108B provided in the lower portion of the space 111 is hollow. The direction of the wire 15 constituting the removal brush 108B attached to the rear R surface in the key insertion direction of the support piece 9 is the direction of the long side 5a of the keyhole 5 (arrow AB direction). It is in the point.

  That is, the removal brush 108B is configured by a pair of wire groups 116A and 116B formed by a large number of elastically deformable wires 15 having spring properties. The wire 15 that forms the wire group 116A of the removal brush 108B is oriented in the direction of the long side 5a (arrow A-B) of the keyhole 5 and aligned in the direction of the short side 5b of the keyhole 5 (arrow C-D). The base end is attached to the edge 11 e of the space 11 so that the free end faces the space 111.

  The wire 15 that forms the wire group 116B of the removal brush 108B is oriented in the direction of the long side 5a (arrow A-B) of the keyhole 5 and is arranged in parallel in the direction of the short side 5b of the keyhole 5 (arrow C-D). The base end portion is attached to the edge 11 f of the space 11 so that the free end faces the space 111. The free ends of the wire rods 5 and 5 of the pair of wire rod groups 116A and 116B of the removal brush 108B configured as described above are opposed to each other with an interval δ2 smaller than the height H of the stem 7 of the key 6. Yes.

  With this configuration, when the stem 7 of the key 6 inserted into the keyhole 5 passes through the removal brush 8A, the foreign material attached to both side surfaces of the stem 7 is scraped by the wire 15 of the removal brush 8A. Be dropped. Next, when the stem 7 passes through the removal brush 108B, the upper and lower surfaces of the stem 7 are slidably contacted by the wire 15 of the removal brush 108B, so that the foreign matter attached to the upper and lower surfaces of the stem 7 is scraped off. As described above, the foreign matter adhering to the entire surface of the stem 7 can be scraped off by the removing brushes 8A and 108B, so that the foreign matter adhering to the entire surface of the stem 7 can be reliably removed.

In this embodiment , the removal brush 108B is attached to the rear R surface of the support piece 9 in the key insertion direction, and the removal brush 8A is attached to the front F surface of the support piece 9 in the key insertion direction. As described above, the removal brush 108B may be attached to the front F surface of the support piece 9 in the key insertion direction, and the removal brush 8A may be attached to the rear R surface of the support piece 9 in the key insertion direction.

  DESCRIPTION OF SYMBOLS 1 ... Cylinder lock, 2 ... Lock body, 3 ... Cylinder hole, 4 ... Cylinder, 5 ... Key hole, 6 ... Key, 7 ... Stem, 8A, 8B, 108B ... Removal brush, 9,109 ... Supporting piece, 11 ... Space , 12 ... discharge port, 13 ... engagement surface, 14 ... engagement protrusion, 15 ... wire rod, 16A, 16B, 116A, 116B ... wire rod group, 17 ... groove, 18 ... engaged portion, 19 ... discharge hole, 20 ... foreign matter.

Claims (4)

In a cylinder lock comprising a lock body having a cylinder hole, a cylinder rotatably supported in the cylinder hole of the lock body and provided with a key hole, and a key inserted into the key hole of the cylinder,
An elastically deformable removal brush that is in sliding contact with the key inserted into the keyhole, and a support piece that is supported by the removal brush and attached to the cylinder ;
The support piece includes a space through which the key inserted from the keyhole passes.
The removal brush is formed by a wire having a large number of spring properties, and is attached to each of the front and rear surfaces of the support piece in the key insertion direction so as to face each other with the space interposed therebetween.
Among the removal brushes, a pair of removal brushes attached to either the front surface or the rear surface of the support piece in the key insertion direction is provided in the short side direction of the keyhole. The wire rods that are formed by the wire rod groups and that form the wire rod groups are oriented in the short side direction of the keyhole and are arranged side by side in the long side direction of the keyhole, and the wire rods of the pair of wire rod groups have free ends of each other. Each base end portion is attached to an edge of the space so as to face the space while facing each other at an interval,
The removal brush attached to the other surface of the front surface and the rear surface is constituted by a pair of wire rods provided in the long side direction of the keyhole, and the wire rods forming these wire rod groups are: Oriented in the long-side direction of the keyhole and arranged in parallel in the short-side direction of the keyhole, each of the pair of wire rod groups has their free ends facing each other with a space therebetween, and facing each space. A cylinder lock characterized in that a proximal end portion is attached to an edge of the space. The cylinder lock according to claim 1 , wherein a discharge port is provided in the space for discharging foreign matter attached to the key and removed by the removal brush. The cylinder lock according to claim 1 or 2, wherein the support piece is detachably attached to the cylinder. An arcuate engagement surface formed with the same curvature as the inner peripheral surface of the cylinder hole is provided on the upper surface of the support piece, and engagement protrusions are provided at both ends of the engagement surface,
Providing a groove into which the support piece is inserted into the cylinder;
The engaging portion of the support piece inserted into the groove is engaged with the groove, and an engaged portion is provided for rotating the support piece following the rotation of the cylinder. Item 5. The cylinder lock according to Item 3 .

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