Tablet front device

Abstract

To provide a locking device that can prevent unintended locking action with a simple configuration.SOLUTION: A locking device S is configured to include: a locking mechanism 10 having a deadbolt 11 and a deadbolt engaging portion 21; and locking / unlocking operating means 30 having an operating lever 41, a cam portion 50, and a wire member 31, the cam portion 50 being made up of a first cam member 51 with a mountain-shaped section 52a and a valley-shaped section 52b, and a second cam member 61 with a mountain-shaped section 62a and a valley-shaped section 62b. The first cam member 51 and the second cam member 61 are arranged so that a first cam body 52 and a second cam body 62 face each other for meshing engagement therebetween, the first cam member 51 being made rotatable relative to the second cam member 61.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a locking device for locking and unlocking a door.

Background Art

[0002] As a locking and unlocking device for a door of a toilet or the like, there are a hanging-type locking device (hanging lock) that rotates a rotating lever to lock it to a receiver and a deadbolt-type locking device that locks and unlocks a deadbolt (locking member) to lock and unlock the door.

[0003] For example, conventionally, there has been a deadbolt-type locking device including locking means incorporated in the upper end portion of a sliding door, locking and unlocking operation means incorporated in the handle position at a substantially middle position, and a lock receiver attached to the upper wall. The locking means has a structure in which a latch (locking member) is spring-biased in an upward protruding direction into a fixed cylinder embedded in the sliding door and is held so as to be able to protrude and retract from the latch outlet of the fixed cylinder. Further, it includes a rotating operation lever connected between the locking and unlocking operation means and the latch, and has a structure in which the latch can protrude and retract from the latch outlet according to the rotation operation direction of the rotating operation lever (Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the locking and unlocking operation means of the conventional deadbolt-type locking device, when the door is strongly and roughly closed during unlocking, an impact force acts, and the latch rotates to the locked position, so that the door is locked, and the unlocking operation cannot be performed from the outside of the door. The above problem was the same in the conventional hanging lock.

[0006] The present invention has been made to solve the above problems, and an object thereof is to provide a lock device that can prevent an unintended locking operation with a simple structure.

Means for Solving the Problems

[0007] In order to achieve the above object, a lock device of the present invention (hereinafter referred to as "this lock device") includes a locking member that is provided so as to be able to project and retract from the upper end or the lower end of a door member that is an object to be attached (member to be attached), and a locking means having a locking member engaging portion for engaging the protruding locking member, a rotatable operation mechanism, and a connecting member that connects the operation mechanism and the locking member, and includes unlocking and locking operation means for causing the locking member to project and retract. In the lock device that locks by engaging the locking member with the locking member engaging portion when the door member is closed, a cam portion is provided in the operation mechanism, and the cam portion It is also, the first cam member is composed of a cylindrical housing and a first cam body, the second cam member is formed from an annular ring and a second cam body provided on one surface of the annular ring, and the second cam member is attached to the housing by the attachment body with a biasing means interposed between the annular ring and the attachment body, and the second cam body is constantly pressed in the direction of the first cam body by the biasing force of the biasing means has a first cam member and a second cam member each provided with a three-dimensional cam surface composed of a mountain-shaped portion and a valley-shaped portion, the first cam member and the second cam member are arranged so that the respective cam surfaces face each other and mesh, and the first cam member or the second cam member (one of the cam members) is provided so as to be rotatable with respect to the second cam member or the first cam member (the other cam member). It is also, the first cam member is composed of a cylindrical housing and a first cam body, the second cam member is formed from an annular ring and a second cam body provided on one surface of the annular ring, and the second cam member is attached to the housing by the attachment body with a biasing means interposed between the annular ring and the attachment body, and the second cam body is constantly pressed in the direction of the first cam body by the biasing force of the biasing means This is a feature.

[0008] As described above, the present invention is applicable to various lock devices, but is particularly preferably applicable to a hanging lock device and a deadbolt lock device. In addition, this lock device is applicable to various door members such as sliding doors, folding doors, and hinged doors.

[0009] Here, the locking member is a member that projects at least a part thereof from the upper end or the lower end of the door member that is the object to be attached, and restricts the movement of the door member, and there is no limitation on the shape or the like as long as the effect can be achieved. In addition, the connecting means for connecting the operating mechanism and the locking member is not limited in its form as long as it can transmit the locking and unlocking operation instructions of the operating mechanism to the locking member, and a string-like member such as a wire or a rod-like member such as a rod can be used.

[0010] Further, the cam surfaces of the first cam member and the second cam member are each composed of a mountain-shaped portion and a valley-shaped portion, and the first cam member and the second cam member are arranged in a direction in which the cam surfaces face each other, and each mountain-shaped portion and valley-shaped portion are engaged with each other so that they are each rotatably provided. Therefore, it is preferable that the cam surfaces of the first cam member and the second cam member are formed in the same shape so as to be engageable.

[0011] In particular, if the cam surfaces of the first cam member and the second cam member are each composed of four of the above-mentioned mountain-shaped portions and valley-shaped portions and are formed so that the adjacent mountain-shaped portions are spaced 90 degrees apart, it is possible to cause a regular operation in the locking member (operating mechanism), which is preferable. Note that the first cam member and the second cam member may be provided in combination with other components.

[0012] This lock-preventing device has, in the operating mechanism, a first cam member and a second cam member provided with cam surfaces composed of a mountain-shaped portion and a valley-shaped portion, and a locking member (operating member), and the first cam member and the second cam member are provided so as to be rotatable with respect to the second cam member or the first cam member. Therefore, in this lock-preventing device, when a turning force of a predetermined magnitude does not act, the mountain-shaped portion or valley-shaped portion of one of the cam members does not engage with the valley-shaped portion or mountain-shaped portion of the other cam member, and the operating mechanism does not perform a turning operation. Therefore, when unlocking, in the case where locking and unlocking do not occur, it is possible to prevent the door member from being locked due to malfunction or the like.

Advantages of the Invention

[0013] According to the present invention, it is possible to provide a lock device that can prevent an unintended locking operation with a simple structure.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0015] Hereinafter, with reference to the drawings, one embodiment of this lock device will be described in detail. In the description of the drawings, the same reference numerals are given to the same elements, and redundant descriptions are omitted.

[0016] The lock device S of the present embodiment is applied to a deadbolt - type lock device. As shown in FIG. 1, the lock device S is assumed to be provided in a toilet booth. This toilet booth is partitioned into a rectangular space in plan view by an upper panel (not shown) suspended from the ceiling to a predetermined height, two horizontal partition panels (not shown) installed in a direction perpendicular to the upper panel between the upper panel and the wall surface, and left and right panels (not shown) installed in a direction orthogonal to the horizontal partition panels with a predetermined opening provided to form an entrance portion.

[0017] And at the entrance portion, a door panel D (door member) which is a hinged door is rotatably attached by being supported at the end portion on the hinge side using a hinge device or the like. Also, at a position which is approximately the central height of the door panel D and is on the hinge side from the end portion on the door leading side by a certain length, an attachment space (hereinafter simply referred to as "attachment space D1") for the lock front device S having a rectangular parallelepiped shape is formed from the upper end portion to a position reaching approximately the central height.

[0018] [Lock Front Device] As shown in FIGS. 2 to 4, the lock front device S mainly includes a locking mechanism 10 (locking means), a wire member 31 (connecting member), and a locking and unlocking operation means 30 including an operation mechanism 40.

[0019] (Locking Mechanism) The locking mechanism 10 includes a deadbolt 11 which is a locking member, a deadbolt attachment portion 15, and a deadbolt engagement portion 21 (locking member engagement portion). The deadbolt 11 has a shape in which rectangular parallelepipeds with square cross-sections having different cross-sectional dimensions are connected vertically, and the lower portion is formed with a smaller cross-section than the upper portion. Also, an attachment hole 11a (hereinafter simply referred to as "attachment hole") for the following wire member 31 is provided at the lower end portion of the deadbolt 11.

[0020] The deadbolt mounting portion 15 is composed of a cylindrical hollow cylinder 16 and a rectangular mounting plate 17 provided on the upper surface. The hollow cylinder 16 is housed in the upper part of the mounting space D1 of the door panel D, and the mounting plate 17 is attached to the upper end surface in the mounting space D1 of the door panel D with screws (not shown) (reference numeral 17a indicates the mounting holes). An urging spring 18 (urging member) is wound around the lower part of the deadbolt 11 with a small cross-section, and an upward (in the direction of the deadbolt engaging portion 21) urging force always acts. In this state, the upper part of the deadbolt 11 is inserted into the hollow portion of the hollow cylinder 16 so that it faces upward.

[0021] The deadbolt engaging portion 21 is formed as a square cylindrical engaging cylinder for inserting the upper tip portion of the deadbolt 11, and is embedded directly above the deadbolt 11 on the lower end surface of the upper panel.

[0022] (Locking and unlocking operation means) The locking and unlocking operation means 30 includes an operating mechanism 40 and a wire member 31, and the operating mechanism 40 is provided at the lower end of the mounting space D1 of the door panel D, which is a position from the upper end to approximately the central height.

[0023] The operating mechanism 40 mainly includes an operating lever 41 which is an operating member, a cover 42, a cam portion 50, a square core 44, and a usage status display body 45. The operating lever 41 has a planar shape similar to a roughly oval lock. At the base end portion, a square core mounting portion 41a for attaching a square core 44 with a square cross-sectional shape protrudes, and a hole portion 41b with a square cross-sectional shape is formed. Also, a stepped portion 41c for attaching to the cover 42 is formed at the base end portion of the end surface of the operating lever 41 on the door panel D side.

[0024] The cover 42 is formed in a cylindrical cap shape, and a central hole 42a is formed in the central part. On the upper surface part of the cover 42, a concave fan-shaped part 42b of 90 degrees is formed to restrict the operation of the operation lever 41. And in the hollow part of the cover 42, a round seat 43 which is in the shape of a thin octagonal cylindrical cap is inserted. In the round seat 43, a central hole 43a for inserting the square core 44 is formed at a position corresponding to the position of the central hole 42a of the cover 42, and on both sides thereof, insertion holes (round holes 43b) for fastening the following mounting rod 48 with mounting screws 49 are formed.

[0025] As shown in FIGS. 5(a) and 5(b), the cam part 50 is formed by attaching a second cam member 61 to a housing 55 constituting a first cam member 51 via an attachment body 66.

[0026] The first cam member 51 is composed of a housing 55 and a first cam body 52. The above-mentioned housing 55 has a cylindrical shape having a circular body 56 on the surface opposite to the operation lever 41. In the central part of the above-mentioned circular body 56, a square central hole 56a for inserting the square core 44 is formed, and substantially 90-degree arc-shaped holes 56b are formed symmetrically with the central hole 56a as the center. In the substantially middle part of the peripheral wall surface of the above-mentioned housing 55, locking grooves 55c for locking the locking parts 68a of the attachment pieces 68 in the following attachment body 66 are formed at symmetric positions. Also, on the peripheral wall surface of the above-mentioned housing 55, a groove part 55b is formed in the length direction at a position corresponding to the central part of one of the arc-shaped holes 56b, and an attachment part 55a for the wire member 31 is provided at the middle position thereof.

[0027] A first cam body 52 is provided on the surface of the above-mentioned circular body 56 on the operation lever 41 side. The above-mentioned first cam body 52 is provided with a cam surface on the circumference such that four mountain-shaped parts 52a and valley-shaped parts 52b are alternately continuous, that is, the mountain-shaped parts 52a are at 90-degree intervals.

[0028] The second cam member 61 is formed from an annular ring 63 and a second cam body 62 provided on one surface of the annular ring 63. The second cam body 62 is provided with a cam surface along the periphery of the inner circle of the annular ring 63 such that four mountain-shaped portions 62a and valley-shaped portions 62b are alternately continuous, and the first cam body 52 of the first cam member 51 and the second cam body 62 of the second cam member 61 are engaged with each other.

[0029] Also, at positions that are both end portions in the diameter direction at the peripheral edge of the annular ring 63, semi-circular arc-shaped fitting portions 63b for fitting the following mounting rod 48 are formed, and at the central portion, a square-shaped central hole 63a for inserting the square core 44 is formed. The mounting body 66 is provided with a cylindrical cap portion 67 and elastic deformable mounting pieces 68 mounted in an L-shape (in side view) on both side surfaces of the lower surface portion. Further, a locking portion 68a is formed at the tip of the mounting piece 68. Note that reference numeral 67a is a central hole provided in the cylindrical cap portion 67.

[0030] In the cam portion 50, the second cam member 61 and the first cam member 51 are arranged such that the cam surfaces of the respective cam bodies 62, 52 face each other so that their cam surfaces are engaged with each other. The second cam member 61 is attached to the housing 55 by the mounting body 66 with a ring 64 and a biasing spring 65 (biasing means) interposed between the annular ring 63 and the mounting body 66, and the second cam body 62 is constantly pressed in the direction of the first cam body 52 by the biasing force of the biasing spring 65. Therefore, the two cam surfaces are in contact with each other. Then, the mounting piece 68 of the mounting body 66 is inserted into the hollow portion of the housing 55, and the locking portion 68a of the mounting piece 68 is locked to the locking groove 55c of the housing 55, and the first cam member 51 is configured to be rotatable with respect to the second cam member 61.

[0031] The usage status display body 45 is composed of a disc 46 and a display change body 47. The disc 46 is formed in a hat shape, with a square-shaped central hole 46a formed in the central part. Two cylindrical mounting rods 48 are extended at positions symmetric with each other across the central hole 46a. On the surface of the disc 46 opposite to the operation lever 41, blue and red are alternately colored every 90 degrees.

[0032] At the center of the display change body 47, in order to insert the square core 44, it has a protruding portion 47a having a hollow portion with a square cross-sectional shape (Fig. 3). Also, on the surface of the display change body 47 opposite to the protruding portion 47a, a butterfly connector-shaped portion 47b is formed facing each other. The display change body 47 has the protruding portion 47a inserted through the central hole 46a of the disc 46, and one end portion 44b (the end portion on the side opposite to the operation lever 41) (hereinafter referred to as the "one end portion") of the square core 44 is inserted and fitted into the protruding portion 47a, so that it can rotate in conjunction with the rotation of the square core 44.

[0033] In the operating mechanism 40 provided with the above components, the operation lever 41 and the cover 42 are arranged inside the door panel D, and the usage status display body 45 is arranged outside the door panel D. The other components are provided in the mounting space D1. And, from the inside to the outside of the door panel D, they are arranged in the order of the operation lever 41, the cover 42, the round seat 43, the cam portion 50, and the usage status display body 45.

[0034] The square core mounting portion 41a of the operation lever 41 is rotatably inserted through the central holes 43a of the cover 42 and the round seat 43. The end portion 44a (hereinafter referred to as the "other end portion") of the square core 44 on the side opposite to the one end portion side is mounted in the hole portion 41b of the square core mounting portion 41a. And the square core 44 is inserted through the central holes 42a, 43a, 67a, 56a of the cover 42, the round seat 43, and the cam portion 50 (the cylindrical cap portion 67 and the spherical body 56 of the mounting body 66), and its one end portion 44b is inserted into the protruding portion 47a of the display change body 47 in the usage status display body 45.

[0035] (Overall structure) The wire member 31 is inserted through the mounting hole 11a of the dead bolt 11 in the locking mechanism 10 and the mounting portion 55a in the housing 55 of the first cam member 51 constituting the operating mechanism 40 by the clamps 32 interposed at both ends, and the dead bolt 11 and the first cam member 51 are connected via the wire member 31.

[0036] The operating mechanism 40 configured as described above can rotate the operating lever 41 around the base end within the range of the concave fan-shaped portion 42b (90-degree range) in the cover 42. In conjunction with this rotation operation, the first cam member 51 and the display change body 47 of the usage status display body 45, which can operate integrally via the square core 44, can rotate.

[0037] Also, in the locking mechanism 10, when the operating lever 41 is in the locked position, due to the biasing force of the biasing spring 18, the dead bolt 11 protrudes from the upper end surface of the door panel D and is locked by being accommodated in the dead bolt engaging portion 21. On the other hand, when the operating lever 41 is rotated to the unlocked position, the rotational force of the first cam member 51 acts as a downward tension on the dead bolt 11 via the wire member 31. Then, the dead bolt 11 moves downward, exits from the dead bolt engaging portion 21, and is unlocked by being accommodated inside the door panel D.

[0038] Also, due to the rotation operation of the display change body 47, when locked, the red area of the disc 46 is displayed from the portion other than the bow tie-shaped portion 47b of the display change body 47, and when unlocked, the blue area is displayed. Thus, the locked and unlocked states of the door panel D can be visually recognized from the outside.

[0039] [Operation of the Pre-locking Device] Subsequently, the operation of the pre-locking device S will be described. In the following description, it is assumed that the pre-locking device S is attached to a predetermined position of the door panel D.

[0040] (At the time of locking and unlocking) Rotate the tip of the operating lever 41 of the operating mechanism 40 to the directly above position where it is in the unlocked state. Then, while the mountain-shaped portion 52a of the first cam body 52 in the first cam member 51 meshes with the valley-shaped portion 62b of the second cam body 62 in the second cam member 61, the first cam body 52 rotates with respect to the second cam body 62. At this time, due to the rotational force of the first cam member 51 via the wire member 31, a downward tension acts on the dead bolt 11, exceeding the biasing force of the biasing spring 18 of the locking mechanism 10, so the dead bolt 11 moves downward. Then, the dead bolt 11 exits from the dead bolt engaging portion 21 and is accommodated inside the door panel D, thereby being unlocked (Figs. 6(a), (b)).

[0041] On the other hand, rotate the operating lever 41 of the operating mechanism 40 counterclockwise by 90 degrees and move it to the locked state position. Then, while the mountain-shaped portion 52a of the first cam body 52 in the first cam member 51 meshes with the valley-shaped portion 62b of the second cam body 62 in the second cam member 61, the first cam body 52 rotates with respect to the second cam body 62 in the opposite direction to the unlocking time. At this time, since the action of the downward tension acting on the dead bolt 11 no longer occurs, the dead bolt 11 is pressed upward by the biasing force of the biasing spring 18 of the locking mechanism 10, protrudes from the upper surface of the door panel D, and is locked by being accommodated in the dead bolt engaging portion 21 (Figs. 7(a), (b)).

[0042] Also, in the pre-locking device S, when the rotational force acting on the operating lever 41 is below a predetermined magnitude, the mountain-shaped portion 52a of the first cam body 52 in the first cam member 51 and the valley-shaped portion 62b of the second cam body 62 in the second cam member 61 do not mesh, and the first cam member 51 does not rotate. Therefore, even when an unexpected external force below a predetermined magnitude acts unintentionally, the locking mechanism 10 does not operate due to the action of the first cam member 51 and the second cam member 61, and it is prevented from being locked (Figs. 8((a), (b)).

[0043] [Function and effect of the pre-locking device] According to the lock device S, in the cam portion 50 of the locking and unlocking operation means 30, the first cam body 52 of the first cam member 51 and the second cam body 62 of the second cam member 61 are each provided with a cam surface composed of four mountain-shaped portions 52a, 62a and valley-shaped portions 52b, 62b. The first cam member 51 and the second cam member 61 are arranged so that the cam bodies 52, 62 face each other and mesh, and are rotatably provided. Therefore, when a turning force of a predetermined magnitude does not act, the mountain-shaped portion 52a of the first cam body 52 and the valley-shaped portion 62b of the second cam body 62 do not mesh, and the operation lever 41 does not turn. Therefore, in the case of locking and not reaching the unlocking state, it is possible to prevent the door panel D from being locked due to malfunction or the like, which contributes to preventing the toilet from being used unintentionally.

[0044] Further, the first cam body 52 of the first cam member 51 and the second cam body 62 of the second cam member 61 are formed such that mountain-shaped portions 52a, 62a and valley-shaped portions 52b, 62b of the same shape are continuous on the circumference and the adjacent mountain-shaped portions 52a, 62a are erected at 90-degree intervals. Therefore, the operation lever 41 can be operated regularly.

[0045] As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and design changes can be made as appropriate without departing from the spirit of the present invention. In particular, in the deadbolt type lock device in the above embodiment, the locking member protrudes from the upper end portion of the door member. However, the locking member may protrude from the lower end portion of the door member.

[0046] Further, in the latch type lock device in the above embodiment, the locking member (lever receiving member or the like) of the operation member for locking the operation member (locking member) may be provided at a predetermined position of the structural member adjacent to the door member. In addition, for the locking mechanism (locking member, locking member engaging portion), the locking and unlocking operation means (operation mechanism, connecting member), the first cam member, the second cam member (including the mountain-shaped portion and the valley-shaped portion), etc. in this tablet device, various components can be used as long as they have a basic configuration and exhibit their effects.

Explanation of Signs

[0047] S Tablet device D Door panel (door member) D1 Mounting space 10 Locking mechanism (locking means) 11 Deadbolt (locking member) 15 Deadbolt mounting portion 21 Deadbolt engaging portion (locking member engaging portion) 30 Locking and unlocking operation means 31 Wire member (connecting member) 40 Operation mechanism 41 Operation lever 42 Cover 44 Square core 45 Usage display body 50 Cam portion 51 First cam member 52 First cam body 52a Mountain-shaped portion 52b Valley-shaped portion 55 Housing 56 Spherical body 61 Second cam member 62 Second cam body 62a Mountain-shaped portion 62b Valley-shaped portion 63 Ring 66 Mounting body

Claims

【Claim 1】 A locking member that is provided so as to be able to protrude and retract from the upper end or the lower end of the door member, and locking means having a locking member engaging portion for engaging the protruding locking member, An operating mechanism configured to be rotatable, and a connecting member that connects the operating mechanism and the locking member, and unlocking and locking operation means for causing the locking member to protrude and retract, In a locking device that locks by engaging the locking member with the locking member engaging portion when the door member is closed, The operating mechanism is provided with a cam portion, The cam portion is Composed of a first cam member and a second cam member each provided with a cam surface composed of a mountain-shaped portion and a valley-shaped portion, The first cam member and the second cam member are arranged so that the respective cam surfaces face each other and mesh, and the first cam member or the second cam member is provided so as to be rotatable with respect to the second cam member or the first cam member. The first cam member is composed of a cylindrical housing and a first cam body, The second cam member is formed from an annular ring and a second cam body provided on one surface of the annular ring, and The second cam member is attached to the housing by the attachment body with a biasing means interposed between the annular ring and the attachment body, and the second cam body is constantly pressed in the direction of the first cam body by the biasing force of the biasing means. A locking device characterized by that.

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