JP5187562B2 - Locking device - Google Patents

Description

  The present invention relates to a lock device that is provided on a door or the like of a shared toilet and can display a locked / unlocked state on the outdoor side.

  In general, for example, a slide latch lock made up of a lock body and a puller is used for the door of a shared toilet, and the locked or unlocked state of the lock body on the indoor side can be seen in the room so that it can be visually confirmed whether or not it is in use. A locking / unlocking display unit for displaying on the outside is provided. This locking / unlocking display unit has a disk-shaped display body (display plate) in which a red locking display and a blue unlocking display are provided on each half, through a display window provided on the front face of the puller. According to a lock body unlocking operation of the lock body provided on the inner side, a rotation transmitting means rotates forward and backward to display a red / blue switching state (see, for example, Patent Document 1). ).

  However, this is provided with a connecting shaft to the display body on the lock body side in order to rotate the forward / reverse rotation by the rotation transmission means to display the display body in red / blue, and this is connected to the rack / pinion type meshing. The transmission means is configured to transmit rotation when the latch body is slid. For this reason, when adopting the rack and pinion method, if the rack is configured as the upper side and the pinion as the lower side and the lock body is attached to the door, an appropriate gear gap is maintained by the weight of the latch lock itself including the case. Since it will engage with each other and increase the sliding operation (especially at the time of starting), it must be configured to prevent engagement with the mounting body, or with the rack on the bottom and the pinion on the top. In addition, the lock main body requires a plurality of transmission members constituting them, which makes the structure complicated and increases the manufacturing cost. In addition, the locking / unlocking display device provided on the puller must accommodate a disk-shaped display in the inside thereof, and not only a large display window can be formed, but also the design of the puller itself is improved. This has the problem of preventing the variation of the shape.

  On the other hand, as a locking / unlocking display device, regardless of the above rotating display plate, the display body is protruded from the front surface of the puller in the locked state, and the red display applied to the outer peripheral surface portion is visually recognized. There is known a structure in which this is immersed in the front side so that it can be moved in and out (see, for example, Patent Document 2). In other words, this display device (6) is connected via a cam means for transmitting the rotation and unlocking state of a guest room of a hotel or the like in conjunction with a rotation operation of a thumb turn that forms part of a locking device provided on the indoor side. ) Is made to appear and disappear from the outdoor seat plate (2) so that the hotel employee can visually discriminate.

However, in this device, as means for transmitting the rotation of the thumb turn to the display body 6, it is linked to the rotation shaft of the thumb turn via the linkage member (10), and a cam (5) is provided on the tip side thereof. ) Is engaged with the projecting piece (71) of the driven piece (7) fixed to the display body (6), and the display body (6) is rotated by the thumb turn to lock the driven piece (7). The piece (71) is pushed up along the slope of the V-shaped groove (51) of the cam (5) against the urging force of the compression spring (8), and at the time of unlocking, the protruding piece of the driven piece (7) (71) is configured to fit into the V-shaped groove (51) of the cam (5) and be immersed. For this reason, cam means such as the cam (5) and the driven piece (7) are arranged on the display body (6) side, the configuration on the display body 6 side becomes complicated, and the driven piece (7). The cam (5) side is a free end, the display body (6) is guided and supported only in the projecting hole (23) provided in the outer seat plate (2), and the cam (5) and the projecting piece (71 ) Is a cantilever engagement in which the axial center position is shifted. Therefore, when the protruding piece (71) side is swung and the driven piece (7) is lengthened, the display body (6) and the protruding insertion hole (23) are engaged with each other. Cannot be used for latch locks that move linearly over a predetermined stroke. In addition, the display body (6) formed on the outer seat plate (2) is also designed to be inconspicuous for the user and to be recognized by the hotel employee, and has no decorative property at all with the former one. there were.

Japanese Utility Model Publication No. 7-14042 (FIGS. 1 and 2) Japanese Utility Model Publication No. 06-0785551 (FIGS. 1 and 2)

  The present invention has been devised to eliminate the above-described problems, and includes a display body that displays a change in appearance according to a locking / unlocking operation, and has cam means disposed on the locking / unlocking display device side. Eliminates the need for installation, simplifies the overall structure of the lock device, and makes the display body, the handle case, and the lock body case individually have shapes and sizes with various variability. It is an object of the present invention to provide a locking device that can be made easy and can be easily varied.

  In order to solve the above-described problems, a locking device according to the present invention includes a lock body provided on the indoor side provided with a latch body that is detachably engageable with a latch receiver by locking / unlocking operation of the operation unit, and locking / unlocking operation of the lock body. Accordingly, a lock device comprising a lock / unlock display device provided on the outside of the exterior provided with a display body for switching and displaying the lock / unlock state, wherein the display body is removed from the outer surface of the lock / unlock display device. The display body is configured so that the display can be switched by projecting and retracting the outer peripheral surface portion, and the display body is provided with a driven shaft whose front end portion reaches the operation section side, and the display bodies are respectively provided on the lock body side and the unlocking display device side. On the other hand, the operation portion is provided with a cam surface formed with a predetermined stroke area from the locking position to the unlocking position of the latch body on the surface facing the tip portion of the driven shaft. Is connected to the locking / unlocking operation of the operation unit. Cooperative to, the distal end side, that allowed to driven by sliding engagement along the cam surface, is characterized in that it has retractable configure the display body.

  The lock device according to the present invention is provided with a display body that displays a change in appearance according to the locking / unlocking operation, but the display body is guided and supported without blurring between two points. It is possible to dispose it from the center of the door, and to form a long one with its front end penetrating the door width reaching the operation part, and to provide a cam surface on the lock body side to make the display body appear and disappear As a result, not only can the operation unit be rotated, but it can be applied not only to a linear movement of a predetermined stroke, but the cam surface can be used as an operation unit for operating the latch body. This eliminates the need to dispose a transmission means such as a cam body on the locking / unlocking display device side, and can greatly reduce the number of parts of the mechanism for switching and displaying the locking / unlocking state of the display body. . In addition, the display body can be formed large on the front surface (outer surface) such as a pull handle so that the display body can be moved in and out even if the outer peripheral surface portion has a complicated contour shape having a peak portion and a valley portion. Therefore, it is possible to use the display body as a decorative body, so that the structure of the entire lock device can be simplified, and the display body, the pull case, the lock body case, etc. Various shapes and sizes with various variability can be formed, and variations can be made easy.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a lock device illustrating an embodiment of the present invention as a preferred embodiment will be described in detail with reference to the drawings.

In the drawings, reference numeral 1 denotes a slide latch lock (locking device) attached to a door 2 of a shared toilet. The slide latch lock 1 is attached to a lock body 3 attached to an indoor side surface of the door 2 and an outdoor side surface of the door 2. And a puller 4 to be attached.
The lock body 3 is provided on the side of the opening frame 21 and is provided with a latch body 32 integrally formed with the operation portion 31, a lock body case 33 that supports the operation portion 31 and the latch body 32 so as to be slidable in the left-right direction. And a latch receiver 34 to which the latch body 32 is engaged and disengaged by the locking / unlocking operation 31. The door 2 is locked and unlocked by engaging and disengaging the latch body 32 with respect to the latch receiver 34.
The latch body 32 is provided with an auxiliary shaft 321 projecting toward the door 2 and a sliding contact portion 322 on the base end side, and the operating portion 31 has a slide operation knob projecting from the lock body case 33. 311 is formed.
The latch receiver 34 is configured by using the opening frame 21 itself as a latch receiver when the door 2 is opened outward, and providing a receiving plate as necessary from the viewpoint of preventing scratches.

  The lock body case 33 is integrally formed with a mounting portion 331 for the flat door 2 and a semicircular case outer appearance portion 332. The mounting portion 331 is provided with a guide groove 331b for guiding the auxiliary shaft 321 opened to the latch receiver 34 with a stroke length necessary for the locking / unlocking operation of the latch body 32 from the attachment surface 331a having a predetermined width. The outer peripheral surface of the sliding contact portion 322 is in sliding contact with the inner peripheral surface of the lock body case 33. Further, the rear surface side of the mounting portion 331 includes nut legs 334 and 334 and a bearing portion 335 on the attachment surface 331a, and a surface area extending from the attachment surface 331a to the latch receiver 34 is in contact with the door 2. The non-contact surface area is formed in a step shape, and a rubber-based sheet 333 is interposed between the attachment surface 331a and the door 2 surface, and when the tip of the auxiliary shaft 321 is on the attachment surface 331a, this sheet 333 The tip surface of the auxiliary shaft 321 does not come into contact with the door surface when it comes into sliding contact with the surface and reaches the non-contact area.

On the other hand, the case exterior portion 332 is provided with a guide groove 332 a that guides the knob 311 that opens to the opposite side of the latch receiver 34 with a stroke length necessary for the locking / unlocking operation of the latch body 32. That is, the operating portion 31 is in a state in which the knob 311 protrudes outward from the guide groove 332a and abuts the proximal end of the guide groove 332a at the locking position to be entirely accommodated in the lock body case 33 (FIG. 5B). In the unlocking position, a sliding operation is performed with the majority of the area exposed from the opening of the guide groove 332a exposed from the lock body case 33 (FIG. 5A).
The mounting portion 331 and the case appearance portion 332, the operation portion 31 and the latch body 32 are integrally formed, but may be formed separately, and the surface of the seat 333 is not limited to the rubber type, and is made of resin or metal. There may be.

A pull handle 4 configured as a locking / unlocking display device is attached to the outdoor side surface of the door 2 via a pedestal 41. The handle 4 includes a handle case 42 in which a handle piece 421 is integrally formed on the lower side (may be formed separately), and a display body 5 at the front center of the handle case 42. Composed. The locking / unlocking display device may be formed together with the outer seat plate shown in Patent Document 2.
The pedestal 41 is integrally formed in a substantially U shape in sectional view by a base portion 411 and mounting pieces 412 and 412 of a pair of handle cases 42 extending from opposite sides of the base portion 411, and on the opposite surface, Two bolt insertion legs 414 and 414 inserted into the door 2 and a bearing portion 413 of a driven shaft 54 to be described later are provided.
Then, the mounting bolts 415 inserted into the bolt insertion legs 414 and 414 are screwed into the nut legs 334 and 334 formed on the mounting portion 331 of the lock body case 33 with either one of the mounting pieces 412 on the lower surface side. The pedestal 41 and the pulling case 42 are fixed with the door 2 interposed therebetween, and the pulling case 42 is inserted into the pedestal 41 attached to the door 2 and drilled on the back side of the handle piece 421. The screw is fixed from 423.

3 (A) and 3 (B), the display bodies 5 and 5 ′ are formed in arbitrary shapes by the surface portions 51 and 51 ′ and the outer peripheral surface portions 52 and 52 ′, respectively, and the outer peripheral surface portions 52 and 52 ′ are red. Display is performed and the pulling case 42 is fitted into a concave groove portion 424 formed in conformity with the outer peripheral surface shape of the display body 5.
In the display body 5 of FIG. 3A, the surface portion 51 has substantially the same appearance color as the front surface of the pull case 42, and the outer peripheral surface portion 52 is formed in a rectangle having no recess (valley).
On the other hand, the display body 5 ′ of FIG. 3B is provided with a red female toilet mark on the surface 51 ′, which is different from the appearance color of the front face of the pull case 42. Furthermore, the external shape is also formed in the shape of an English letter L indicating the meaning of Ladies.
That is, the display body 5 ′ is provided with a one-point mark figure or a three-dimensional sculpture on the surface 51 ′ of the plant, animals, vehicles, symbol marks of prefectures, wards, municipalities, etc., and character goods. (2) The shape of the display body 5 ′ itself is changed by forming it on a designed decorative surface and adapting the surface portion 51 ′ and the outer peripheral surface portion 52 ′ to the contour shape applied to the entire decorative surface. It is constructed as a designed decorative body. The contour form of the outer peripheral surface portion 52 ′ of the decorative body has a complicated shape formed by a combination of a concave portion and a convex portion (a peak portion and a valley portion).
In addition, the size of the surface portion 51 can be increased by providing the display body 5 with an arbitrary shape having no concave portion (valley portion) in the outline of a square, a circle, an ellipse, a triangle, etc., and a one-point mark figure or a three-dimensional engraving can be provided. .

  On the back surface of the display body 5, a driven shaft 54 whose tip end reaches the operation portion 31 is provided. The driven shaft 54 is inserted into a bearing portion 413 drilled in the bottom of the groove portion 424, and is connected to the handle 4 side and the lock. The bearings 413 and 335 are guided and supported by the bearings 413 and 335 provided on the main body 3 side, respectively. The bearings 413 and 335 are juxtaposed with the bolt insertion legs 414 and the nut legs 334, respectively. It is provided at a position displaced from the center. Between the pedestal 41 and the insertion hole 425, a coil spring 53 that constantly urges and biases the driven shaft 54 in the backward direction is disposed via a ring-shaped retaining restriction piece 53a, and this retaining restriction piece 53a. Therefore, the movement of the driven shaft 54 is restricted between the insertion hole 425 and the base 41, and when the display body 5 protrudes, it cannot be pulled out due to an external factor. Moreover, although the driven shaft 54 was comprised with the linear rod-shaped body, you may be made to bend in step shape. When configured in this way, the pulling handle 4 itself or the locking / unlocking display device 4 separated from the handle piece 421 is shifted from the opposed position of the lock body 3 independently, for example, to the center side or upper side of the door, It can be arranged close to the line of sight, and the decoration function can be further extracted.

On the other hand, the operation portion 31 on the surface facing the tip of the driven shaft 54 is linear with a predetermined stroke area from the locking position to the unlocking position with respect to the concave set groove 312 formed in the operation portion 31. A cam body 55 made of resin (material can be appropriately adopted) on which the cam surface 551 is formed is mounted. Thus, the distal end portion of the driven shaft 54 is engaged and slidably contacted on the cam surface 551 in a state in which the distal end portion is always elastically biased, and the driven shaft 54 is linked to the locking / unlocking operation of the operation portion 31 along the cam surface 551. The display body 5 is configured to be able to appear and disappear while being driven.
Instead of the bearing portion 413, the groove portion 424 may be configured as a bearing portion for bearing the display body itself, or the insertion hole 425 may be configured as a bearing portion for the driven shaft 54. In addition, the cam surface 551 is formed toward the handle 4 side, and the display body 5 is configured to be able to protrude from the front and rear in the front-rear direction. However, the cam surface 551 is formed in an arbitrary direction, and is vertically and horizontally and diagonally. You may comprise so that it may invade from the outer surface. For example, if the driven shaft 54 is bent so that the cam surface 551 faces upward, the protrusion amount of the outer peripheral surface portion 51 can be increased, and the front outer peripheral surface portion 51 is displayed in blue. , And the display can be switched to display the unlocked state as the unlocked display and the immersive state as the locked display. Characters, designs, and engravings can be applied to the outer peripheral surface portion 51.

The cam surface 551 is formed with horizontal stroke areas 551b and 551c through the inclined stroke area 551a so that the driven shaft 54 is positioned and held, and the horizontal stroke area 551c of the locked position is The latch body 32 is formed to start as a locked display position where the projection of the display body 5 is completed before the latch body 32 is completely locked to the latch receiver 34. That is, the inclination angle of the inclined stroke area 551a is a locked display position where the protrusion of the display body 5 is completed, and a fitting state is secured so that the base end portion of the display body 5 does not come out of the set groove 312. in is set to the moving amount of the front becomes substantially flush surface portion 51 and the pull casing 42 of the display 5, the display body 5 is restricted so as not to rotate by external factors during projecting. The cam surface 551 is formed with a protrusion 552 between the horizontal stroke region 551c and the inclined stroke region 551a at the locking position. In the locked state, the operation unit 31 is connected to the tip of the driven shaft 54. However, it is impossible to move without overcoming this protrusion 552.

In the embodiment of the present invention configured as described above, the display body 5 that displays whether or not it is in use is moved in and out according to the locking operation of the lock body 3, thereby switching the display of the locked / unlocked state. The lock device 1 according to the present invention is provided with a follower shaft 54 for guiding and supporting the display body 5 on the lock body 3 side and the locking / unlocking display device (puller 4) side. The operation portion 31 is provided with a cam surface 551 formed on the surface facing the distal end portion of the driven shaft 54 with a predetermined stroke area from the locking position to the unlocking position of the latch body 32. The display body 5 is configured to be capable of appearing and retracting by interlocking and interlocking with the locking / unlocking operation of the operation unit 31 and moving forward and backward by following the sliding contact engagement along the cam surface 551. .
That is, when the latch body 32 is in the unlocked position, the unlocking display is performed in which the display body 5 is immersed in the groove portion 424 to indicate that the display body 5 is in the unlocked state and the outer peripheral surface portion 52 is hidden. When the latch body 32 is operated to lock in this state, the driven shaft 54 is driven while being slidably engaged along the linear cam surface 551, the display body 5 is protruded, and the outer peripheral surface portion 52 is exposed from the groove portion 424. Switches to the lock display state. Note that the protruding state may be changed into a blue display indicating unlocking by immersing it.

  For this reason, the display body 5 is guided and supported without blurring between two points, although it is provided with a display body that displays the appearance change according to the locking / unlocking operation, the driven shaft 54 is set to the center of the display body 5. The cam surface 551 is formed on the side of the lock main body 3 so that the display body 5 can be projected and retracted by being formed in a long shape through which the door 2 reaching the operation section 31 is penetrated. As a result, it can be applied not only to the rotary cam that is rotated by the thumb-turn operation unit shown in Patent Document 2, but also to the linear cam in which the operation unit 31 moves straight a predetermined stroke. In addition, the cam surface 551 can be directly formed on the operation portion 31 for operating the latch body 32, and the cam body 55 is provided on the locking / unlocking display device (pull handle 4) side. Etc. It is not necessary to dispose the, it is possible to reduce the substantial parts of the mechanism to display to switch the lock-unlock state of the display 5. In addition, the display body 5 can be formed large on the front surface of the pull handle 4 or the like, and can be moved up and down even if it has a complicated contour shape having a peak portion and a valley portion. 5 itself can also be used as a decorative body, so that the structure of the lock device 1 as a whole can be simplified, and the display body 5, the pull case 42, the lock body case 33, etc. can be individually provided. It can be formed in various shapes and sizes with various variability, and variations can be made easier.

  Further, the lock / unlock display device (pull handle 4) according to the present invention guides and supports the display body 5 on the display body 5 side and the distal end side of the driven shaft 54 engaged with the cam surface 551, respectively. Can be formed large on the front surface of the puller 4 and the like, and can be moved up and down even if it has a complicated external shape. It is possible to construct a decorative body in which symbol marks, character goods, etc. of prefectures, wards, municipalities, etc. are formed on the designed decorative surface. For this reason, for example, by attaching a sticker or display board with a symbol mark or sculpture of a certain ward to each installation location or area such as a hotel, condominium, airport terminal, public park, etc. 51, and it is possible to introduce the display body 5 as a unified display mark by appropriately designing the display body 5 such as forming the display body 5 itself by adapting the peripheral surface portion 52 to the contour shape thereof, Not only can it be used in a different manner from those used in other facilities, but instead of (in conjunction with) the identification mark provided at the upper center position of the conventional door, it should be used for the display body 5 that moves in and out. Can do.

  The locking / unlocking display device is configured as a pull handle 4 provided on the outdoor side, and the guide 5 of the display body 5 is a bearing provided with the driven shaft 54 on the lock body 3 side and the pull handle 4 side, respectively. The driven shaft 54 can be guided and supported by a two-point support structure in which the driven shaft 54 is firmly supported on the display body 5 side and the driven shaft 54 tip side. 54 can be provided at a position shifted from the center of the display body 5, and the display body 5 can be moved up and down even if it is designed with a complicated contour shape of peaks and valleys. In addition, the respective bearing portions 335 and 413 are inserted into the mounting portion 331 (attachment surface 331a) of the lock body case 33 serving as a mounting surface to the door 2 and the base 41 of the pull case 42, respectively. Leg 414 and Nut legs 334 and is arranged can be placed, without complicating the growth and structure of parts, there is an advantage that the present invention may be implemented.

Further, since the cam surface 551 is formed in the cam body 55 mounted in the concave set groove 312 formed in the operation portion 31, the cam surface 551 is naturally molded in the lock body case 33. It can be formed even in a state of being immersed in the door 2.
In addition, the cam surface 551 is formed with a horizontal stroke area 551b and 551c through the inclined stroke area 551a so that the driven shaft 54 is positioned and held, and the horizontal stroke area 551c of the locked position is formed. Since the latch body 32 is formed so as to start as a locked display position where the projection of the display body 5 is completed before the latch body 32 is completely engaged with the latch receiver 34, the display is performed even when the latch body 32 is in the half-locked state. The body 5 can be projected and displayed in a state where locking is completed.
Further, since a protrusion 552 is formed on the cam surface 551 between the horizontal stroke area 551c and the inclined stroke area 551a at the locking position, the cam surface 551 can move unless the tip of the driven shaft 54 gets over the protrusion 552. Therefore, unlocking can be prevented so that the operation unit 31 does not move carelessly, and the lock display state can be maintained.

Further, since the driven shaft 54 is constantly urged to press the display body 5 in the immersion direction, the inclined stroke region 551a in which the tip end portion of the driven shaft 54 is inclined downward beyond the horizontal stroke region 551c of the locking position. Is moved to the horizontal stroke area 551b, which is the unlocking position, even if an operation for stopping the latch body 32 at a halfway position is performed. It moves smoothly, prevents erroneous display different from the unlocked state, can accurately display the state, and can enhance the reliability of the unlocked display.
Although the distal end of the driven shaft 54 is directly engaged with the cam surface 551 to be driven, an engagement piece is provided on the distal end side of the driven shaft 54 so as to be slidably engaged. This engagement piece may be cantilevered because the driven shaft 54 is guided and supported by the two-point support structure.

It is a perspective view which shows the attachment state of a lock main body. It is a rear view of a lock body case. It is a perspective view of a pulling hand which shows the state where a display object projected, (A) is an explanatory view showing an example of a display object of a general shape, and (B) shows an example of a designed display object. It is explanatory drawing. (A) is a rear view of a puller, (B) is an AA sectional view of a puller. It is a horizontal sectional view in the state where a lock main part and a handle are attached, (A) is a sectional view showing an unlocked state, and (B) is a sectional view showing a locked state.

Explanation of symbols

1 Locking device (slide latch lock)
2 Door 21 Opening frame 3 Lock body 31 Operation part 311 Knob piece 312 Set groove 32 Latch body 321 Auxiliary shaft 322 Sliding part 33 Lock body case 331 Mounting part 331a Mounting surface 331b Guide groove 332 Case external part 332a Guide groove 333 Sheet 334 Nut leg 335 Bearing part 34 Latch receiver 4 Locking / unlocking display device (puller)
41 Base 411 Base part 412 Mounting piece 413 Bearing part 414 Bolt insertion leg 415 Bolt 42 Pulling case 421 Hanger piece 423 Screw hole 424 Groove part 425 Insertion hole 5 Display body 51 Surface part 51 'Surface part 52 Outer surface part 53' Outer surface part 53 ' 53a Retaining prevention piece 54 Drive shaft 55 Cam body 551 Cam surface 551a Inclined stroke area 551b Horizontal stroke area 551c Horizontal stroke area 552 Projection

Claims (9)

A lock body provided on the indoor side provided with a latch body that can be freely engaged with and disengaged from the latch receiver by the unlocking operation of the operation section, and a display body that switches and displays the locking and unlocking state according to the locking and unlocking operation of the lock body A locking device comprising a locking / unlocking display device provided on the outdoor side provided on the outer surface,
To configure the display body so that the display can be switched by causing the outer peripheral surface portion to appear and disappear from the outer surface of the locking / unlocking display device.
The display body is provided with a driven shaft whose front end portion reaches the operation section side, and guides and supports the display body on the lock body side and the locking / unlocking display device side,
The operation portion is provided with a cam surface formed with a predetermined stroke area from the locking position of the latch body to the unlocking position on the surface facing the tip of the driven shaft,
The driven shaft is interlocked with the locking / unlocking operation of the operation portion, and the tip end side is driven by sliding contact along the cam surface so that the display body can be moved in and out. A locking device characterized by that. 2. The display body according to claim 1, wherein the display body is configured as a decorative body having a surface portion formed on a decorative surface on which plant marks, animals, vehicles, symbol marks of prefectures, wards, municipalities, etc. are designed. A locking device characterized by that. 3. The locking / unlocking display device according to claim 1, wherein the locking / unlocking display device is configured as a pull provided on an outdoor side, and the guide support of the display body is a bearing provided with the driven shaft on the lock body side and the pull side. A locking device characterized by being configured to be guided and supported by a portion. In Claim 2, The said display body is formed in arbitrary shapes with a surface part and an outer peripheral surface part, The surface part is made different from the outer surface of the said locking / unlocking display apparatus, and its external color, or its surface part. the outer peripheral surface, the lock apparatus characterized by being formed by allowed conform to the contours shape of the decorative body. 5. The locking device according to claim 1, wherein the cam surface is formed on a cam body mounted in a concave set groove formed in the operation portion. The cam surface according to any one of claims 1 to 5, wherein the cam surface forms the locking position and the unlocking position in a horizontal stroke area through an inclined stroke area so that the driven shaft is positioned and held. The horizontal stroke region is formed so as to start as a lock display position at which the projection of the display body is completed before the latch body is completely engaged with the latch receiver. 7. The locking device according to claim 6, wherein a protrusion is formed on the cam surface between a horizontal stroke area and an inclined stroke area at a locking position. The lock body according to any one of claims 1 to 7, wherein the lock body supports the latch body so as to be slidable in a left-right direction, the operation portion and the latch body are integrally configured, and the cam surface is A lock device comprising a straight cam. 9. The locking device according to claim 1, wherein the driven shaft constantly pressurizes the display body in the immersion direction.