Cylinder locks and building equipment

Abstract

To provide a cylinder lock with a simple structure that allows for adjustment of the position of the decorative plate relative to the decorative plate due to differences in plate thickness, regardless of the shape of the decorative plate and the decorative plate. [Solution] A cylinder lock comprising a cylinder lock body, a decorative plate provided to cover the front end of the cylinder lock body, and a decorative plate provided to surround the outer circumference of the decorative plate, wherein either the outer circumferential wall of the decorative plate or the inner circumferential wall of the decorative plate has a position regulating portion in which a plurality of grooves and protrusions extending in the circumferential direction are arranged along the axial direction of the cylinder lock body, and the other of the outer circumferential wall of the decorative plate or the inner circumferential wall of the decorative plate has a spring plate portion for positioning and fixing the decorative plate, the spring plate portion has a claw portion that engages with one of the grooves of the position regulating portion, the movement of the decorative plate toward the rear relative to the decorative plate is permitted by the claw portion elastically deforming so as to overcome the protrusion of the position regulating portion, and the movement of the decorative plate toward the front relative to the decorative plate is prevented by the claw portion being locked into the groove.

Description

Technical Field

[0001] The present disclosure relates to cylinder locks and building equipment.

Background Art

[0002] As a cylinder lock attached to a door such as an entrance door, there is one having an ornament seat provided so as to cover the front end portion side of the cylinder lock body, and a decorative seat provided so as to surround the outer periphery of the ornament seat, and these are arranged so as to be exposed on the outer surface of the door. The ornament seat covers the front end face of the cylinder lock body and has a key insertion hole communicating with the keyhole formed in the cylinder lock body. The decorative seat is provided so as to shield between the outer peripheral surface of the ornament seat protruding from the outer surface of the door and the outer surface of the door by abutting against the outer surface of the door. Since the protruding amount of the ornament seat from the outer surface of the door varies depending on the difference in the thickness of the door even when the same cylinder lock is attached to the door, in that case, adjustment of the attachment position of the decorative seat with respect to the ornament seat is required.

[0003] Conventionally, a donut-shaped disk with a part missing is attached to a groove provided along the inner circumference of the decorative seat, and the attachment position of the decorative seat can be adjusted by elastically engaging this disk with the unevenness provided on the outer peripheral surface of the core cylinder. The decorative seat is configured to be movable in the direction of abutting against the outer surface of the door by the disk elastically overcoming the convex portion, but movement in the direction away from the outer surface of the door is made impossible by the disk falling into the concave portion (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Conventional cylinder locks require the preparation of a donut-shaped disc with a portion missing as a separate part, and then a groove is machined into the inner surface of the decorative plate to attach it, in order to make the decorative plate's position adjustable. Moreover, while conventional cylinder locks are effective when the decorative plate and plate are formed in a circular shape, they are difficult to apply when the decorative plate and plate are not circular.

[0006] This disclosure aims to provide a cylinder lock and building equipment having the same, which have a simple structure and allow for adjustment of the position of the decorative plate relative to the decorative plate due to differences in plate thickness, regardless of the shape of the decorative plate and the decorative plate. [Means for solving the problem]

[0007] This disclosure relates to a cylinder lock comprising: a cylinder lock body; a decorative seat provided to cover the front end of the cylinder lock body; and a decorative seat provided to surround the outer circumference of the decorative seat, wherein either the outer peripheral wall of the decorative seat or the inner peripheral wall of the decorative seat has a position regulating portion in which a plurality of grooves and protrusions extending along the circumferential direction of the decorative seat or the decorative seat are arranged along the axial direction of the cylinder lock body; the other of the outer peripheral wall of the decorative seat or the inner peripheral wall of the decorative seat has a spring plate portion for positioning and fixing the decorative seat relative to the decorative seat, the spring plate portion has a claw portion that engages with one of the grooves of the position regulating portion, the rearward movement of the decorative seat relative to the decorative seat is permitted by the claw portion elastically deforming so as to overcome the protrusion of the position regulating portion, and the forward movement of the decorative seat relative to the decorative seat is prevented by the claw portion being locked into the groove. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing a cylinder lock according to one embodiment installed on a door. [Figure 2] This is a perspective view showing a disassembled cylinder lock according to one embodiment. [Figure 3] This is a view of a cylinder lock according to one embodiment, seen from the rear. [Figure 4] This is a longitudinal cross-section along line AA in Figure 3. [Figure 5] This is a cross-sectional view along line BB in Figure 3. [Figure 6] This is a perspective view of the decorative plate of a cylinder lock according to one embodiment, viewed from the rear. [Figure 7] This is a perspective view of the decorative base of a cylinder lock according to one embodiment, viewed from the rear. [Figure 8] This is a longitudinal cross-sectional view showing the adjustment of the position of the decorative plate relative to the decorative plate of a cylinder lock according to one embodiment. [Figure 9] This is a longitudinal cross-sectional view showing a cylinder lock according to one embodiment attached to a door with a plate thickness T1. [Figure 10] This is a longitudinal cross-sectional view showing a cylinder lock according to one embodiment attached to a door with a plate thickness of T2. [Figure 11] This is a perspective view showing a cylinder lock according to another embodiment installed on a door. [Modes for carrying out the invention]

[0009] Embodiments of this disclosure will now be described in detail with reference to the drawings. As shown in Figure 1, the cylinder lock 1 is attached to the door 100. The decorative plate 4 and decorative plate 5 provided on the cylinder lock 1 are exposed and positioned on the outer surface 100a of the door 100.

[0010] Here, we define the directions indicated by the arrows at both ends in each figure. X1 indicates the axial front side of the cylinder lock 1, and X2 indicates the axial rear side of the cylinder lock 1. The X1-X2 direction is along the central axis J of the cylinder lock body 2, as shown in Figure 2. With the door 100 to which the cylinder lock 1 is installed as the reference, X1 indicates the exterior side with respect to the door 100, and X2 indicates the interior side with respect to the door 100. The exterior side X1 is the side that the outer surface 100a of the door 100 faces, and is the side on which the user performs locking and unlocking operations on the cylinder lock 1 using an unlocking key (not shown). The top and bottom and left and right of the cylinder lock 1 shown in each figure correspond to the top and bottom and left and right of the cylinder lock 1 when it is installed on the door 100, as shown in Figure 1. Although not shown, the unlocking key is, for example, a cylindrical rod-shaped body.

[0011] As shown in Figure 2, the cylinder lock 1 is composed of a cylinder lock body 2, a housing 3, a decorative escutcheon 4, and a decorative escutcheon 5. The housing 3, decorative escutcheon 4, and decorative escutcheon 5 may be made of molded resin.

[0012] The cylinder lock body 2 comprises an inner cylinder 21 and an outer cylinder 22 that rotatably fits the inner cylinder 21. The inner cylinder 21 has a keyhole 211 into which an unlocking key (not shown) is inserted along the axial direction of the cylinder lock body 2. A drive unit 212 is provided at the rear end of the inner cylinder 21 to transmit the rotational movement of the inner cylinder 21 to a locking device (not shown). As shown in Figure 4, the cylinder lock body 2 has a plurality of pin structures 23, including driver pins and tumbler pins, that are provided across the inner cylinder 21 and the outer cylinder 22. The cylinder lock body 2 engages the pin structures with the protrusions and recesses formed on the unlocking key (not shown) inserted into the keyhole 211, and when the shear line at the boundary between the driver pin and the tumbler pin coincides between the inner cylinder 21 and the outer cylinder 22, the inner cylinder 21 rotates in response to the operation of the unlocking key, thereby performing a locking and unlocking operation.

[0013] The housing 3 is a component for attaching the cylinder lock body 2 to the decorative base 4, and is formed in a substantially circular shape when viewed along the axial direction of the cylinder lock 1. The housing 3 has a cylindrical portion 31, a front flange portion 32 and a rear flange portion 33 that project radially from the outer peripheral surface of the cylindrical portion 31, respectively.

[0014] The cylindrical portion 31 is formed in a cylindrical shape capable of accommodating the cylinder lock body 2 inside. The cylindrical portion 31 is open at the front and rear of the housing 3 along the axial direction of the cylinder lock body 2. An annular wall 311 that projects radially inward of the cylindrical portion 31 is formed at the front opening of the cylindrical portion 31. The annular wall 311 abuts against the front end face 2a of the cylinder lock body 2 inserted into the cylindrical portion 31 from the rear side of the housing 3, and positions the cylinder lock body 2 at the front end portion inside the cylindrical portion 31. The cylinder lock body 2 inside the cylindrical portion 31 is fixed to the housing 3 by a fixing member (not shown).

[0015] The front flange portion 32 is formed along the circumferential direction of the cylindrical portion 31 at a position closer to the front end portion side than the central portion of the cylindrical portion 31 along the axial direction of the cylinder lock body 2. Engagement concave portions 321, 321 for engaging with engagement convex portions 422, 422 provided on the decorative base 4 described later to attach the housing 3 to the decorative base 4 are formed at the upper end portion and the lower end portion of the front flange portion 32, respectively.

[0016] The rear flange portion 33 is formed along the circumferential direction of the cylindrical portion 31 at the rear end portion of the cylindrical portion 31. A lock device (not shown) connected to the drive portion 212 of the inner cylinder 21 of the cylinder lock body 2 is attached to the rear flange portion 33 from the rear side. The outer diameter of the front flange portion 32 and the outer diameter of the rear flange portion 33 are the same.

[0017] The decorative base 4 is provided so as to cover the front end portion side of the cylinder lock body 2 on the outer surface 100a of the door 100 by being attached to the front end portion side of the housing 3. The decorative base 4 has an end face plate 41 that covers the front end face of the housing 3, an outer peripheral wall 42 provided along the outer periphery of the end face plate 41, and a semi-arc wall 43 provided inside the outer peripheral wall 42.

[0018] When the end face plate 41 is viewed along the axial direction of the cylinder lock 1 from the outdoor side X1 of the decorative base 4, it is formed in a non-circular shape. Specifically, the end face plate 41 is formed in a vertically long oval shape, that is, a vertically long ellipse. In the end face plate 41, a key insertion hole 411 communicating with the keyhole 211 is formed so as to coincide with the position of the keyhole 211 of the cylinder lock body 2. As shown in FIG. 4, the key insertion hole 411 is formed in a mortar shape with a reduced diameter toward the rear, and for example, a cylindrical unlocking key can be inserted therein. The end face plate 41 extends longer on the lower side than on the upper side of the key insertion hole 411.

[0019] As shown in FIG. 6, a pair of engaging plates 412, 412 project rearward on the back surface 41a of the end face plate 41. The engaging plates 412, 412 are arranged at diagonal positions sandwiching the key insertion hole 411. As shown in FIG. 2, the engaging plates 412, 412 engage with a pair of engaging grooves 312, 312 formed along the axial direction of the housing 3 at the front end of the cylindrical portion 31 of the housing 3. Thereby, the engaging plates 412, 412 restrict the housing 3 inserted from the rear side of the decorative base 4 from rotating around the axis.

[0020] The outer peripheral wall 42 is provided along the entire circumference of the end face plate 41. The outer peripheral wall 42 projects rearward from the end face plate 41. As shown in FIG. 4, the outer peripheral wall 42 extends to the rear of the position of the front flange portion 32 of the housing 3 and extends to the vicinity of the central portion in the axial direction of the cylinder lock body 2 fixed to the housing 3.

[0021] As shown in FIGS. 3 and 4, the upper half region of the outer peripheral wall 42 surrounds the upper half of the outer periphery of the housing 3 (the outer periphery of the front flange portion 32), but the lower half region of the outer peripheral wall 42 is arranged away from the lower side of the housing 3. The semi-arc wall 43 is provided inside the outer peripheral wall 42 so as to surround the lower half of the outer periphery of the housing 3 (the outer periphery of the front flange portion 32). The upper half region of the outer peripheral wall 42 and the semi-arc wall 43 are smoothly connected and formed in a cylindrical shape, surrounding the entire circumference of the front flange portion 32 of the housing 3.

[0022] As shown in Figures 3 and 6, two connecting walls 421 and 421 are formed between the lower half of the outer peripheral wall 42 and the semi-circular wall 43, connecting the two. The connecting walls 421 and 421 are formed from the back surface 41a of the end plate 41 with the same projection height as the outer peripheral wall 42 and the semi-circular wall 43. The connecting walls 421 and 421 extend radially with respect to the central axis J of the cylinder lock body 2.

[0023] As shown in Figures 4 and 6, engaging projections 44, 44 are formed on the upper inner surface of the outer peripheral wall 42 and the inner surface of the semi-circular wall 43, respectively. The engaging projections 44, 44 are positioned opposite each other across the key insertion hole 411 of the end plate 41. The engaging projections 44, 44 are formed in a triangular cross-section with a surface on the front side that is substantially perpendicular to the inner surfaces of the outer peripheral wall 42 and the semi-circular wall 43, and an inclined surface on the rear side. The engaging projections 44, 44 engage with the engaging recesses 321, 321 of the housing 3, which is inserted from the rear side of the decorative base 4, thereby fixing the housing 3 inside the decorative base 4.

[0024] As shown in Figure 6, an annular projection 413 surrounding the key insertion hole 411 is formed on the back surface 41a of the end plate 41. As shown in Figure 4, the front end surface 3a of the housing 3, which is fixed inside the decorative base 4, abuts against the back surface 41a of the end plate 41 of the decorative base 4, and the annular projection 413 is fitted inside the annular wall 311 of the housing 3. The key insertion hole 411 of the end plate 41 communicates with the keyhole 211 of the cylinder lock body 2.

[0025] A position regulating portion 45 is formed on the outer circumferential surface 42a of the outer circumferential wall 42. The position regulating portion 45 regulates the position of the decorative base 5 relative to the decorative base 4 along the axial direction of the cylinder lock 1. The position regulating portion 45 has an area that extends over a predetermined width along the circumferential direction of the outer circumferential wall 42 and a predetermined length along the axial direction of the cylinder lock 1, and is partially formed on the outer circumferential wall 42. One position regulating portion 45 is positioned on each of the diagonal positions of the decorative base 4 that sandwiches the cylinder lock body 2 on the outer circumferential surface 42a of the outer circumferential wall 42. Specifically, one of the two position regulating portions 45, 45 is positioned at each of the upper and lower ends of the outer circumferential surface 42a of the outer circumferential wall 42.

[0026] As shown in Figure 8, the position regulating portion 45 is an assembly of multiple grooves 451 and multiple protrusions 452. The multiple grooves 451 extend along the circumferential direction of the outer peripheral wall 42 and are arranged parallel to the axial direction of the cylinder lock body 2. The grooves 451 are formed between the protrusions 452, which have a sawtooth cross-section. The protrusions 452 are formed in a triangular cross-section with an inclined surface on the front side and a surface on the rear side that is substantially perpendicular to the outer peripheral wall 42. Therefore, the grooves 451 are formed deeper on the front side of the decorative base 4 and gradually become shallower towards the rear. Each groove 451 and each protrusion 452 are formed linearly along the circumferential direction with respect to the outer peripheral surface 42a of the outer peripheral wall 42.

[0027] On the outer surface 42a of the outer wall 42, projections 46 are formed in areas that avoid the position regulating portion 45. The projections 46 extend linearly along the axial direction of the cylinder lock body 2. One projection 46 is positioned on each of the diagonal positions of the decorative base 4 that sandwiches the cylinder lock body 2 on the outer surface 42a of the outer wall 42. Specifically, the two projections 46, 46 are positioned one on each of the left and right ends of the outer surface 42a of the outer wall 42.

[0028] The decorative base 5 is provided on the outer surface 100a of the door 100 so as to surround the outer periphery of the decorative base 4. The decorative base 5 has an elongated oval opening 50 that exposes the end plate 41 of the decorative base 4, and an inner periphery wall 51 and an outer periphery wall 52 are provided along the outer periphery of the opening 50. The inner periphery wall 51 and the outer periphery wall 52 are provided around the entire circumference of the opening 50.

[0029] The inner circumferential wall 51 is positioned parallel to the outer circumferential wall 42 of the decorative plate 4 and protrudes toward the rear. The length of the inner circumferential wall 51 along the axial direction of the cylinder lock body 2 is equal to the length of the outer circumferential wall 42 of the decorative plate 4.

[0030] As shown in Figure 5, the outer peripheral wall 52 is connected to the front end of the inner peripheral wall 51 and extends toward the rear. The outer peripheral wall 52 forms an inclined surface that gradually widens outward as it extends toward the rear from the front end of the inner peripheral wall 51. Therefore, a space S is formed between the inner peripheral wall 51 and the outer peripheral wall 52 that gradually widens toward the rear of the decorative base 5. The rear end of the outer peripheral wall 52 is positioned at the same location as the rear end of the inner peripheral wall 51.

[0031] In the decorative base 5, as shown in Figures 4 and 7, spring plate portions 53, 53 are provided on the inner circumferential wall 51 at diagonal positions on either side of the cylinder lock body 2. The spring plate portions 53, 53 are positioned opposite each other on the upper and lower sides of the inner circumferential wall 51, corresponding to the positions of the two position regulating portions 45, 45 of the decorative base 4. The upper and lower spring plate portions 53, 53 are identical in shape. As shown in Figure 7, the spring plate portions 53 are formed into narrow plates with a width equivalent to the width of the position regulating portion 45 of the decorative base 4 by forming a pair of notched grooves 53a, 53a in the inner circumferential wall 51. The notched grooves 53a, 53a each penetrate the inner circumferential wall 51 in the thickness direction and are formed parallel to the axial direction of the cylinder lock body 2. The notched grooves 53a, 53a are formed to open from the connection portion with the outer circumferential wall 52 on the inner circumferential wall 51 to the rear end of the inner circumferential wall 51. As a result, the spring plate portion 53 can be elastically deformed vertically at its rear end, with its front end as the pivot point.

[0032] A claw portion 531 is formed on the inner surface of the spring plate portion 53, that is, the surface facing the outer peripheral wall 42 of the decorative base 4. The claw portion 531 extends along the width direction of the spring plate portion 53. As shown in Figure 8, the claw portion 531 is formed in a triangular cross-section with a surface on the front side that is substantially perpendicular to the inner peripheral wall 51 and an inclined surface on the rear side. The shape of this claw portion 531 is the same as the shape of the groove portion 451 formed in the position regulating portion 45 of the decorative base 4.

[0033] As shown in Figures 4 and 8, with the decorative seat 5 positioned on the outer circumference of the ornamental seat 4, the claw portion 531 of each spring plate portion 53 engages with one of the multiple grooves 451 of the position regulating portion 45 of the ornamental seat 4. This determines the relative position of the decorative seat 5 with respect to the ornamental seat 4 along the axial direction of the cylinder lock body 2, and the decorative seat 5 is fixed in that position. In this state, if the decorative seat 5 attempts to move forward relative to the ornamental seat 4, the claw portion 531 engages with the protrusion 452 of the position regulating portion 45, thereby locking it in the groove 451. As a result, the forward movement of the decorative seat 5 is prevented.

[0034] On the other hand, when the decorative seat 5 attempts to move backward relative to the ornamental seat 4, the inclined surface of the claw portion 531 is guided along the inclined surface of the protrusion 452 of the position regulating portion 45. As a result, the claw portion 531 moves over the protrusion 415. Consequently, the spring plate portion 53 elastically deforms toward the space S. Therefore, the decorative seat 5 is only allowed to move backward relative to the ornamental seat 4. When the decorative seat 5 moves backward relative to the ornamental seat 4, the elastic deformation of the spring plate portion 53 allows the claw portion 531 to successively overcome the multiple protrusions 415 of the position regulating portion 45, as shown in Figure 8. When the movement of the decorative seat 5 stops with the claw portion 531 engaged with any of the groove portions 451, the position of the decorative seat 5 relative to the ornamental seat 4 is fixed at that stopping position.

[0035] As shown in Figures 3, 5, and 7, recesses 54, 54 are formed on the inner circumferential wall 51 of the decorative base 5 at diagonal positions on either side of the cylinder lock body 2. The recesses 54, 54 are positioned opposite each other on the left and right sides of the central part of the inner circumferential wall 51 in the vertical direction and extend in the front-rear direction along the axial direction of the cylinder lock body 2. The recesses 54, 54 are positioned corresponding to the positions of the two projections 46, 46 formed on the outer circumferential wall 42 of the decorative base 4. Therefore, when the decorative base 5 is positioned on the outer circumferential wall 4, the recesses 54, 54 accommodate and engage with the projections 46, 46 of the decorative base 4.

[0036] The left and right recesses 54, 54 are identical in shape. As shown in Figure 7, recess 54 has a wide portion 541 that extends vertically at its rear end. Recess 54 has a guide portion 542 of a certain width in front of the wide portion 541. The wide portion 541 opens behind the inner circumferential wall 51 and gradually narrows towards the guide portion 542. Therefore, when the decorative seat 4 is inserted into the inner circumferential wall 51 of the decorative seat 5 from the rear, the projection 46 of the decorative seat 4 is first inserted into the wide portion 541, and then, guided by the wide portion 541, is inserted into and engages with the guide portion 542. The engagement of the projection 46 of the decorative seat 4 with the guide portion 542 guides the movement of the decorative seat 5 relative to the decorative seat 4 in a linear fashion.

[0037] Next, we will explain how to install this cylinder lock 1 on doors 100A and 100B with different plate thicknesses.

[0038] Figure 9 shows a cylinder lock 1 attached to a door 100A with a plate thickness T1. The door 100A has a mounting recess 101 for attaching the cylinder lock 1. The locking device 110 is housed within the mounting recess 101. The cylinder lock 1 is inserted into the mounting recess 101 from the front side of the door 100A. The locking device 110 is positioned behind the cylinder lock 1 within the mounting recess 101 and is connected to the drive unit 212 of the cylinder lock body 2.

[0039] In this state, the decorative base 4 is in contact with the outer surface 100a of the door 100A. The decorative base 5 is positioned and fixed to the decorative base 4 so as to be substantially flush with the end plate 41, by the engagement of the upper and lower spring plate portions 53, 53 with one of the groove portions 451 of the position regulating portions 45, 45 of the decorative base 4.

[0040] Figure 10 shows the same cylinder lock 1 as in Figure 9, mounted on a door 100B with a plate thickness T2. The plate thickness T2 is smaller than the plate thickness T1. Since the same locking device 110 as in Figure 9 is housed in the mounting recess 101 of door 100B, the depth dimension of the mounting recess 101 of door 100B is smaller than the depth dimension of the mounting recess 101 of door 100A. Therefore, when the cylinder lock 1 is inserted into the mounting recess 101 of door 100B from the front side of door 100B, the cylinder lock 1 protrudes further forward from the outer surface 100a than in the case of door 100A. When the cylinder lock body 2 is connected to the locking device 110, a gap 120 is formed between the decorative plate 4 and the outer surface 100a of door 100B.

[0041] In this case, when the decorative base 5 is moved backward relative to the ornamental base 4, as shown in Figure 8, the upper and lower spring plate portions 53, 53 of the decorative base 5 elastically deform, and the claw portions 531, 531 successively overcome the groove portions 451, 451 of the position regulating portions 45, 45 of the ornamental base 4. The projections 46, 46 of the ornamental base 4 are housed in the recesses 54, 54 of the decorative base 5, and the movement of the decorative base 5 is guided linearly, so the decorative base 5 can move smoothly and linearly backward relative to the ornamental base 4 without rattling. The projections 46, 46 and the recesses 54, 54 are positioned diagonally opposite to the ornamental base 4 and the decorative base 5, respectively, so the decorative base 5 can be moved more stably and linearly relative to the ornamental base 4. Furthermore, since the positions of the decorative base 4's position regulating parts 45, 45 and the spring plate parts 53, 53 of the decorative base 5 are positioned diagonally opposite each other, the stresses acting on the decorative base 4 and decorative base 5 during the elastic deformation of the spring plate parts 53, 53 cancel each other out. As a result, the position of the decorative base 5 relative to the decorative base 4 can be stably adjusted.

[0042] As shown in Figure 10, when the decorative base 5 contacts the outer surface 100a of the door 100B, the decorative base 5 is positioned with its claws 531, 531 engaged with the grooves 451, 451 of either of the position regulating parts 45, 45, and is fixed to the decorative base 4. As a result, the gap 120 between the decorative base 4 and the outer surface 100a of the door 100B is covered, so the appearance of the door 100B is not spoiled.

[0043] The cylinder lock 1 described above has a position-regulating portion 45 on the decorative plate 4 and a spring plate portion 53 with a claw portion 531 on the decorative plate 5. However, the cylinder lock of this disclosure may have a spring plate portion with a claw portion on the decorative plate 4 and a position-regulating portion 45 on the decorative plate 5.

[0044] The cylinder lock 1 described above has an oval (small-shaped) decorative escutcheon 4 and decorative escutcheon 5, but the shape of the decorative escutcheon and decorative escutcheon is not limited to the cylinder lock of this disclosure, and for example, it may have a rectangular decorative escutcheon and decorative escutcheon. The cylinder lock of this disclosure may also be a cylinder lock 1A having a circular decorative escutcheon 4A and decorative escutcheon 5A, similar to conventional cylinder locks, as shown in Figure 11.

[0045] The cylinder locks 1 and 1A are not limited to use on the front door 100, but can be applied to any building fixtures and other building equipment that require security, such as delivery boxes, gates, doors, and other opening and closing components. For example, the cylinder lock 1 can be applied to back doors, patio doors, interior doors, garage shutters, window shutters, mailboxes, padlocks, crescent locks, safes, display cases, refrigerators, closets, and doors to machine rooms where various mechanical equipment is installed. Thus, the cylinder locks 1 and 1A according to this embodiment can be applied to a group of building equipment consisting of multiple building fixtures and other building equipment installed in a building such as a house, regardless of size.

[0046] The cylinder lock 1,1A shown in this embodiment provides the following effects. The cylinder lock 1,1A comprises a cylinder lock body 2, a decorative base 4 provided to cover the front end side of the cylinder lock body 2, and a decorative base 5 provided to surround the outer circumference of the decorative base 4. Either the outer peripheral wall 42 of the decorative base 4 or the inner peripheral wall 51 of the decorative base 5 has a position regulating portion 45 in which a plurality of grooves 451 and protrusions 452 extending along the circumferential direction of the decorative base 4 or decorative base 5 are arranged along the axial direction of the cylinder lock body 2. Either the other has a spring plate portion 53 that positions and fixes the decorative seat 5 relative to the ornamental seat 4, and the spring plate portion 53 has a claw portion 531 that engages with one of the groove portions 451 of the position restricting portion 45, allowing the decorative seat 5 to move backward relative to the ornamental seat 4 by the claw portion 531 elastically deforming so as to overcome the protrusion 452 of the position restricting portion 45, and preventing the decorative seat 5 to move forward relative to the ornamental seat 4 by the claw portion 531 being locked into the groove portion 451.

[0047] According to this, it is possible to adjust the position of the decorative plate 5 relative to the decorative plate 4 to compensate for differences in plate thickness without needing to provide a separate part for adjusting the position of the decorative plate 5 relative to the decorative plate 4. Since the decorative plate 4 and decorative plate 5 do not necessarily need to be formed in a circular shape as in conventional designs, it is possible to provide a cylinder lock 1,1A with a high degree of design freedom and a simple structure.

[0048] In this embodiment, the spring plate portion 53 is formed in a plate shape by forming a pair of notched grooves 53a, 53a along the axial direction of the cylinder lock body 2 in the outer peripheral wall 42 of the decorative base 4 or the inner peripheral wall 51 of the decorative base 5.

[0049] According to this, the spring plate portion 53 can be easily formed by simply forming a pair of notched grooves 53a, 53a on the outer peripheral wall 42 of the decorative base 4 itself or on the inner peripheral wall 51 of the decorative base 5 itself.

[0050] In this embodiment, the position regulating portion 45 and the spring plate portion 53 are positioned diagonally opposite each other on the decorative plate 4 and the decorative plate 5, respectively, with the cylinder lock body 2 in between.

[0051] According to this, the stresses acting on the decorative seat 4 and the decorative seat 5 during the elastic deformation of the spring plate portions 53, 53 cancel each other out, and the positional adjustment of the decorative seat 5 relative to the decorative seat 4 can be performed stably.

[0052] In this embodiment, either the outer peripheral wall 42 of the decorative base 4 or the inner peripheral wall 51 of the decorative base 5 has a projection 46, and the other of the outer peripheral wall 42 of the decorative base 4 or the inner peripheral wall 51 of the decorative base 5 has a recess 54 that extends along the axial direction of the cylinder lock body 2 and engages with the projection 46.

[0053] According to this, the movement of the decorative base 5 is guided in a straight line, so the decorative base 5 can move smoothly and linearly backward without wobbling relative to the decorative base 4.

[0054] In this embodiment, the projection 46 and the recess 54 are positioned diagonally opposite each other on the decorative plate 4 and the decorative plate 5, respectively, flanking the cylinder lock body 2.

[0055] According to this, the decorative base 5 can be moved more stably and linearly relative to the decorative base 4.

[0056] This disclosure includes cylinder locks and building equipment as described in the following embodiments.

[0057] <Aspect 1> Cylinder lock body and A decorative base is provided so as to cover the front end side of the cylinder lock body, The decorative base is provided so as to surround the outer periphery of the aforementioned decorative base, Either the outer circumferential wall of the decorative base or the inner circumferential wall of the decorative base has a position regulating portion in which a plurality of grooves and protrusions extending along the circumferential direction of the decorative base or the decorative base are arranged along the axial direction of the cylinder lock body. The other of the outer peripheral wall of the decorative base and the inner peripheral wall of the decorative base has a spring plate portion that positions and fixes the decorative base relative to the decorative base. The aforementioned spring plate portion is It has a claw portion that engages with any one of the grooves of the position regulating portion, A cylinder lock that allows the decorative plate to move backward relative to the decorative plate by elastically deforming the claw portion so as to overcome the protrusion of the position regulating portion, and prevents the decorative plate to move forward relative to the decorative plate by the claw portion being locked into the groove.

[0058] <Aspect 2> The cylinder lock according to embodiment 1, wherein the spring plate portion is formed in a plate shape by forming a pair of notched grooves along the axial direction of the cylinder lock body in the outer peripheral wall of the decorative base or the inner peripheral wall of the decorative base.

[0059] <Aspect 3> The cylinder lock according to embodiment 1 or 2, wherein the position regulating portion and the spring plate portion are arranged at diagonal positions of the decorative plate and the ornamental plate, respectively, sandwiching the cylinder lock body.

[0060] <Aspect 4> Either the outer circumferential wall of the decorative base or the inner circumferential wall of the decorative base has a projection, The cylinder lock according to any one of embodiments 1 to 3, wherein the other of the outer peripheral wall of the decorative plate and the inner peripheral wall of the decorative plate has a recess that extends along the axial direction of the cylinder lock body and engages with the projection.

[0061] <Aspect 5> The cylinder lock according to embodiment 4, wherein the projection and the recess are respectively positioned at diagonal positions of the decorative plate and the ornamental plate, flanking the cylinder lock body. <Aspect 6> A building fixture equipped with a cylinder lock as described in any of embodiments 1 to 5. [Explanation of Symbols]

[0062] 1,1A Cylinder lock, 2 Cylinder lock body, 4 Decorative plate, 42 Outer wall of decorative plate, 45 Position regulating part, 451 Groove, 452 Protrusion, 46 Projection, 5 Decorative plate, 51 Inner wall of decorative plate, 53 Spring plate, 53a Notched groove, 531 Claw, 54 Recess

Claims

1. Cylinder lock body and A decorative base is provided so as to cover the front end side of the cylinder lock body, The decorative base is provided so as to surround the outer periphery of the aforementioned decorative base, Either the outer circumferential wall of the decorative base or the inner circumferential wall of the decorative base has a position regulating portion in which a plurality of grooves and protrusions extending along the circumferential direction of the decorative base or the decorative base are arranged along the axial direction of the cylinder lock body. The other of the outer peripheral wall of the decorative base and the inner peripheral wall of the decorative base has a spring plate portion that positions and fixes the decorative base relative to the decorative base. The aforementioned spring plate portion is It has a claw portion that engages with any one of the grooves of the position regulating portion, A cylinder lock that allows the decorative plate to move backward relative to the decorative plate by elastically deforming the claw portion so as to overcome the protrusion of the position regulating portion, and prevents the decorative plate to move forward relative to the decorative plate by the claw portion being locked into the groove.

2. The cylinder lock according to claim 1, wherein the spring plate portion is formed in a plate shape by forming a pair of notched grooves along the axial direction of the cylinder lock body in the outer peripheral wall of the decorative base or the inner peripheral wall of the decorative base.

3. The cylinder lock according to claim 1 or 2, wherein the position regulating portion and the spring plate portion are arranged at diagonal positions of the decorative plate and the ornamental plate, respectively, sandwiching the cylinder lock body.

4. Either the outer circumferential wall of the decorative base or the inner circumferential wall of the decorative base has a projection, The cylinder lock according to claim 1 or 2, wherein the other of the outer peripheral wall of the decorative plate and the inner peripheral wall of the decorative plate has a recess that extends along the axial direction of the cylinder lock body and engages with the projection.

5. The cylinder lock according to claim 4, wherein the projection and the recess are respectively positioned at diagonal positions of the decorative plate and the ornamental plate, flanking the cylinder lock body.

6. A building fixture comprising a cylinder lock according to claim 1 or 2.

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