JP5771668B2 - Slide bolt - Google Patents

Description

  The present invention is installed on a door of a toilet or the like, and includes an inner lock means for linearly reciprocating a latch bar to lock and unlock the door, and an outer means incorporating a display means for displaying the lock / unlock state on a display board. The present invention relates to a slide bolt that connects a handle to a door via a rotating shaft and switches and displays a door locking / unlocking state by a display means in conjunction with movement of a latch bar.

  Conventionally, as shown in FIG. 14, this type of slide bolt has a latch base that is provided with a lock means a by connecting an inner lock means a for locking and unlocking the door d and an outer handle b with the door d interposed therebetween. 1 is engaged with the groove-shaped latch bar 2 so as to be linearly movable, and after the door d is closed, the latch bar 2 is reciprocated linearly to lock and unlock the door d from the inside. The rotational movement is converted by the pinion mechanism, the rotation is transmitted to the display plate 4 of the display means attached to the tip of the rotary shaft 3, and the different division display surfaces provided on the display plate 4 are switched to switch the display window 5 to the door d. It is structured to display the unlocked / unlocked state on the outside.

  Therefore, the lock means a is provided with a rack 6 along the longitudinal direction on one side of the latch bar 2, and a pinion gear 7 that meshes with the rack 6 is provided at the base end of the rotary shaft 3. In the case 8 of the display means, the reduction gear train g is disposed at the tip of the rotary shaft 3, and the rotary shaft 3 is connected to the display plate 4 via the reduction gear train g. .

  Therefore, normally, when the latch bar 2 is reciprocated by a predetermined distance, the door d is locked and unlocked accordingly, and at the same time, the pinion gear 7 rotates forward and backward through meshing with the rack 6, and the rotation is reduced by the reduction gear train g. Deceleration is transmitted to the display board 4, the display board 4 is rotated forward and backward, and the different display surfaces of the display board 4 facing the display window 5 are switched according to the direction of rotation, so that the door d is unlocked / unlocked. To display.

Japanese Utility Model Publication No. 7-14042

  However, in the conventional slide bolt described above, the reduction gear train g is disposed at the tip of the rotary shaft 3 in the case 8 of the display means, and the rotary shaft 3 is connected to the display plate 4 via the reduction gear train g. Since the rotation of the rotary shaft 3 is decelerated by the reduction gear train g in the display unit case 8, the display plate 4 is rotated forward and backward to switch and display the locked / unlocked state of the door. The handle b as a whole is enlarged by the amount arranged in the case 8 of the display means and protrudes to the outside of the door, which is not preferable for doors of rooms that emphasize aesthetic appearance such as designs such as toilet booths in hotels and hospitals. There was a problem.

  Accordingly, an object of the present invention is to improve the aesthetic appearance such as the design around the door by reducing the protrusion of the slide bolt including a handle on the outside of the door, which incorporates a display means for displaying the door locking / unlocking state. Is to realize.

Therefore, in order to solve the above-described problem, the invention described in claim 1 includes an inner locking means A for locking and unlocking the door D by linearly reciprocating the latch bar 10 as illustrated in the following embodiment. When the latch B 10 is reciprocally moved linearly by connecting the outer handle B incorporating the display means C for displaying the locking / unlocking state of the door on the display board 50 to both sides via the rotary shaft 30 with the door D interposed therebetween. The display plate 50, which is engaged with the drive-side rack 20 provided in the latch bar 10 via intermediate gears 35 and 45 and the driven-side driven gear 40 provided at the base end of the rotary shaft 30 is connected to the shaft tip. In the slide bolt that integrally rotates halfway in the forward and reverse directions and switches and displays the locking / unlocking state of the door D from the display window 59 of the handle B, the locking means A includes the latch bar 10 and the unlocking position of the door D. Out When linearly reciprocate a predetermined distance L between the position, the rotational speed of the driven gear 40, the intermediate gear 35, which the display panel 50 is decelerated to a rotating half of switching display the lock-unlock state of the door D 45 is meshed with the rack 20 and the driven gear 40 to form a reduction gear train G, and the reduction gear train G is disposed in the latch bar 10.

  According to a second aspect of the present invention, in the slide bolt according to the first aspect, the reduction gear train G meshes the intermediate gears 35 and 45 with the rack 40, for example, as shown in the embodiment shown below. The drive-side large gears 35a and 45a and the driven-side small gears 35b and 45b meshing with the driven gear 40 are formed by a composite gear that is coaxially attached to form a two-stage reduction.

  According to a third aspect of the present invention, in the slide bolt according to the second aspect of the invention, the reduction gear train G is opposed to both sides in the radial direction of the driven gear 40, for example, as shown in the following embodiment. A pair of the intermediate gears 35 and 45 are arranged at positions, and the small gears 35b and 45b are engaged with the driven gear 40, respectively, while the large gears 35a and 45a are held at a height position where they are engaged with the rack 20. It is characterized by becoming.

  According to the first aspect of the present invention, when the latch bar linearly reciprocates a predetermined distance between the unlocking position and the locking position of the door, the lock means indicates the number of rotations of the driven gear, and the display plate determines the opening and closing of the door. A reduction gear train is formed by meshing an intermediate gear that reduces to 1/2 rotation for switching and displaying the lock state with a drive-side rack and a driven gear provided on the latch bar, and the reduction gear train is placed in the latch bar. By adopting the arrangement, it is possible to improve the aesthetic appearance such as the design around the door by incorporating a display means that displays the lock / unlock state of the door on the display board and reducing the protrusion of the handle provided outside the door. it can.

  According to the second aspect of the present invention, the reduction gear train includes an intermediate gear formed by a composite gear that coaxially has a driving-side large gear meshing with the rack and a driven-side small gear meshing with the driven gear. By adopting a two-stage reduction, the rotational speed of the driven gear can be efficiently reduced to ½ rotation in which the display plate switches and displays the door locking / unlocking state without using an unnecessarily complicated reduction mechanism. .

  According to the third aspect of the present invention, the reduction gear train has a pair of intermediate gears arranged at opposing positions on both sides in the radial direction of the driven gear, and the small gear meshes with the driven gear, while the large gear is racked. When the latch bar is linearly reciprocated by a predetermined distance between the unlocking position and the locking position, the large gear of the intermediate gear and the rack on one side are moved during the movement. Even if the mesh is disengaged, the linear movement of the intermediate gear on the other side is meshed with the same rack, and the linear movement is converted into a rotational motion, and the rotation is decelerated and transmitted to the display board, and the door is unlocked and unlocked. As a result, it is not necessary to unnecessarily lengthen the rack provided on the latch bar, and accordingly, the latch bar can be miniaturized and the cost can be reduced.

It is a disassembled perspective view which shows the slide bolt which is an example of this invention. It is a disassembled perspective view which shows a slide bolt in the opposite direction to FIG. It is an operation | movement front view which shows the state of the reduction gear train when a latch bar exists in an unlocking position. It is a front view of the slide bolt which shows the meshing state of the reduction gear train. It is a perspective view which shows a slide bolt. It is a disassembled perspective view which shows a slide bolt in the opposite direction to FIG. It is a perspective view which shows the door periphery in which a latch bar exists in an unlocking position seeing from an inner side. It is a perspective view which shows the periphery of a door seeing from the outer side with the handle incorporating the display means. It is a perspective view which shows the door periphery which has a latch bar in a locking position seeing from an inner side. It is an operation | movement front view which shows the state of the reduction gear train in the first half which a latch bar moves to a locking direction. It is an operation | movement front view which shows the state of the reduction gear train in the middle which a latch bar moves to a locking direction. It is an operation | movement front view which shows the state of the reduction gear train in the second half in which a latch bar moves to a locking direction. It is an operation | movement front view which shows the state of the reduction gear train when a latch bar moves to a locking position. It is a longitudinal cross-sectional view which shows a conventional slide bolt partly in cross section.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 6 show a slide bolt as an example of the present invention. The slide bolt in the illustrated example includes a lock means A attached to the inside of the door D in a toilet, for example, and a handle B attached to the outside incorporating the display means C with the door D interposed therebetween.

  The locking means A includes a metal latch bar 10 and a metal latch base 11. The latch bar 10 is formed in a groove shape having a U-shaped cross section as a whole. On the opposing inner side surfaces 10a and 10b, convex guide rails 13 and 14 are formed in the length direction, and the lower inner side surface in the figure. The rack 20 is fixed upward in the figure along the guide rail 13 at the intermediate position in the longitudinal direction 10a. The rack 20 meshes with large gears 35a and 45a of a pair of intermediate gears 35 and 45 described later (see FIGS. 3 and 4), but the intermediate gears 35 and 45 are rotated in the forward and reverse directions by linearly reciprocating the latch bar 10. When this is done, the driven gear 40 is provided with a number of teeth that rotate 1/2 in the forward and reverse directions integrally with the display plate 50.

  Each of the latch bases 11 includes a metal base body 15 and a resin exterior plate 16. The base body 15 is formed in conformity with the groove-shaped concave shape of the latch bar 10, and the guide grooves 11 a and 11 a are recessed on the symmetrical side surfaces corresponding to the guide rails 13 and 14. On the other hand, abutting step portions 17 and 18 for restricting a predetermined distance L between the unlocking position and the locking position of the door D on which the latch bar 10 linearly reciprocates are projected on both ends of the slide surface 15a on one side. On the other hand, on the other component assembly surface 15b, a frame piece 19 having an L-shaped cross section is raised from both side edges to form a fitting recess 21 inside. In the latch base 11, the exterior plate 16 is fitted into the fitting recess 21, and then the base ends 23 a of the male screws 23, 23 are screwed into the screw holes 12, 12 through the stud holes 24, 24, and the exterior plate 16 is fitted into the base body 15. 16 is assembled, and female screw holes 26a are screwed onto the distal ends 23b of the male screws 23 and 23 so as to erect tube shaft-like studs 26 and 26.

  Further, the latch base 11 is provided with communication holes 28 and 29 through which the rotary shaft 30 is inserted into the base body 15 and the exterior plate 16 at the center between the stud holes 24 and 24. On the other hand, the base body 15 is provided with gear holding holes 31 and 32 on both sides of the communication hole 28, and a gear receiving recess 36 is formed between the gear holding holes 31 and 32 on the slide surface 15a.

  The rotary shaft 30 is integrally formed of resin, and a driven gear 40 made of a spur gear is formed on the shaft base end 34a of the main body shaft portion 34 having a locking groove 33 parallel to the length direction of the outer periphery.

  Therefore, the locking means A inserts the shaft tip 34 b into the communication holes 28 and 29, and arranges the driven gear 40 of the shaft base end 34 a in the gear receiving recess 36 and inserts the rotary shaft 30 into the latch base 11. At the same time, with the driven gear 40 engaged with the pair of intermediate gears 35 and 45, the latch base 11 is inserted into the latch bar 10, and the guide rails 13 and 14 are engaged with the guide grooves 11a and 11a to slide. Then, after temporarily stopping at the intermediate position in the length direction, the rack 20 is fixed to the intermediate position of the inner side surface 10a on the lower side in the figure along the guide rail 13 with screws 22. Then, as shown in FIGS. 3 and 4, the latch bar 10 is further slid, the end surface 20 a of the rack 20 is brought into contact with the abutting step portion 17, and is held at the unlocked position, and the locking means A is assembled.

  In the locking means A, the intermediate gears 35 and 45 are formed by compound two-stage gears having large gears 35 a and 45 a and small gears 35 b and 45 b coaxially, and are located at opposite positions on both sides in the radial direction of the driven gear 40. The small gears 35 b and 45 b are held in the gear holding holes 31 and 32 of the latch base 11 and meshed with the driven gear 40, while the large gears 35 a and 45 a are held at a height position meshed with the rack 20. Therefore, when the latch bar 10 linearly reciprocates a predetermined distance L between the unlocking position and the locking position of the door D, the intermediate gears 35 and 45 always have the number of rotations of the driven gear 40 and the display plate 50 of the door D. It is formed by a compound two-stage gear having the number of teeth decelerated to 1/2 rotation for switching and displaying the unlocked state. Therefore, the locking means A meshes the large gears 35a and 45a of the intermediate gears 35 and 45 with the rack 20 on the driving side, while holding the small gears 35b and 45b at a height position meshing with the driven gear 40. A reduction gear train G is arranged in the latch bar 10 between the rack 20 and the driven gear 40 on the driven side.

  On the other hand, as shown in FIGS. 1 and 2, the handle B includes display means C for displaying the locking / unlocking state of the door D, a handle bar 41, and a mounting base 42. The display means C includes a display plate 50, a pipe shaft 51, and a spiral spring 52 for restricting rotation. The display board 50 is provided with a short rectangular tube-shaped connecting projection 56 at the center of the back surface of the disk 55, and the board surface is divided into two equally divided donut-shaped surfaces to indicate whether the door D is locked or unlocked. A seal 60 on which a semicircular segment display surface for identification is printed is pasted. In the center of the circular plate 55, a small rectangular emergency operation hole 55a communicating with the hollow hole of the connecting projection 56 is opened. The pipe shaft 51 has a locking rib 64 in the length direction corresponding to the locking groove 33 of the rotary shaft 30 on the inner peripheral surface of the shaft tip 51a side with a circular shaft hole, while the shaft base end 51b side is The shaft hole is formed by a square rotation restriction hole 65. A connection protrusion 56 is inserted into the rotation restricting hole 65 to connect the display plate 50 to the shaft base end 51 b of the pipe shaft 51.

  The handle bar 41 is made of metal and is formed into a groove shape having a substantially U-shaped cross section corresponding to the latch bar 10. The opposing inner side surface 41 a is provided with protruding guide rails 57 and 57 in the length direction. Form relatively short. A circular display window 59 is provided in the center of the web surface 41b, and a small hole 59a is provided in the display window 59 so that an emergency operation hole 55a of the display board 50 is exposed to the outside by cutting out a part of the inner peripheral edge thereof. Provide.

  The mounting base 42 is made of metal, and the outer shape is formed in accordance with the groove-shaped concave shape of the handle bar 41, and the guide groove 61 is recessed in the symmetrical side surfaces according to the guide rails 57 of the handle bar 41, A pair of screw insertion holes 63 are formed on both ends in the length direction corresponding to the stud holes 26 and 26 of the latch base 11, and the pipe shaft 51 of the display means C is provided at the center between the screw insertion holes 63. A central shaft hole 66 is provided through which is inserted.

  Therefore, in the illustrated slide bolt, as shown in FIGS. 1 and 2, the handle B assembles the mounting base 42 at a predetermined mounting position of the door D in which the insertion holes x, y, and z are previously drilled. The mounting base 42 screws the center shaft hole 66 to a predetermined position of the door D in accordance with the intermediate insertion y. On the other hand, on the lock means A side, from the inside of the door D, the rotary shaft 30 and the studs 26, 26 are inserted into the receiving holes x, y, z, respectively, while from the outside of the handle B, the pipe shaft 51 of the display means C. Is inserted into the intermediate inlet hole y, and the rotary shaft 30 is engaged via the spiral spring 52. Then, the receiving screws 69 and 69 are screwed into the female screw holes of the studs 26 and 26 via the spring washers 70, and the locking means A is fastened to the mounting base 42 of the handle B with the door D interposed therebetween. Next, the guide rails 57 and 57 are engaged with the guide grooves 61 and 61, the handle bar 41 is slid, and the mounting base 42 is mounted so as to cover the display means C and screwed. Therefore, the illustrated slide bolt is assembled by connecting the locking means A inside the door D and the display means C incorporated in the outer handle B so as to be able to transmit motion via the rotating shaft 30, and is shown in FIG. Assemble to door D as shown.

  Now, in the slide bolt having the above-described configuration, for example, when locking the door D closed from the inside of the toilet, as shown in FIGS. 3 and 7, the one end surface 20 a of the rack 20 is now in contact with the abutting step portion 17. Hold the latch bar 10 in the unlocked position and slide it in the locking direction X indicated by the arrow. Then, the latch bar 10 moves linearly by the guide grooves 11a and 11a of the latch base 11 engaged with the guide rails 13 and 14, and when the latch bar 10 moves a predetermined distance L as shown in FIGS. The other end surface 20b abuts against the abutting step portion 18, and the latch bar 10 projects to a locking position straddling the gap between the door D and the panel door frame F to lock the door D. 7 and 9, reference numeral 75 denotes a locking tool that locks the opening of the door D by locking the guide rails 13 and 14 to the circumferential groove 75 a on the tip 10 c side of the latch bar 10 during locking.

  Therefore, as shown in FIG. 3, when the latch bar 10 in the unlocked position starts to move linearly in the locking direction X, the slide bolt shown in FIG. 3 has the rack 20 and the large gear 35a of the latch bar 10 in the reduction gear train G. Is engaged, while the intermediate gear 35 of the compound two-stage gear in which the coaxial small gear 35b meshes with the driven gear 40 starts to rotate, and then the latch bar 10 is moved between the unlocked position and the locked position as shown in FIG. While moving the distance L, for example, 50 mm, the intermediate gear 35 decelerates the rotation according to the number of teeth of the large gear 35a meshing with the drive side rack 20, and the rotation number is reduced to a little less than 2 rotations (about 655 °). At the same time, the driven gear 40 on the driven side, which is meshed with the small gear 35b of the intermediate gear 35, decelerates the rotation according to the difference in the number of teeth from the small gear 35b to reduce the rotational speed by half (180 °). Accordingly, the display plate 50 connected to the shaft tip 34 b of the same rotating shaft 30 is rotated halfway in the positive direction m integrally with the driven gear 40, and thereby the divided display surface of the display plate 50 facing the display window 59. Is switched and the locked state of the door D is displayed outside.

  In the illustrated slide bolt, when the latch bar 10 is linearly moved in the locking direction X by a predetermined distance L from the unlocking position to the locking position, the intermediate gears 35 and 45 are driven by the driven gear 40. In order to hold the large gears 35a and 45a at the height position at which the small gears 35b and 45b are engaged with the rack 20, respectively. As shown in FIGS. 3 and 10, the large gear 35 a of the intermediate gear 35 on the unlocking position side meshes with the rack 20 to convert linear movement into rotational motion, and the rotation is decelerated and transmitted to the display board 50. As shown in FIG. 11, the large gear 45a of the intermediate gear 45 on the locking position side also engages with the same rack 20 to convert the linear movement into a rotational motion, and the rotation is decelerated as shown in FIG. In the latter half of the movement, as shown in FIGS. 12 and 13, the large gear 35 a on the unlocking position side is disengaged from the rack 20, but the intermediate gear 45 on the locking position side is a straight line with the large gear 45 a meshing with the rack 20. The movement is converted into rotational movement, the rotation is decelerated and transmitted to the display board 50, and the locked state of the door D is switched and displayed outside.

  On the other hand, when unlocking the door D thus locked from the inside of the toilet by unlocking, the latch bar 10 is slid a predetermined distance L in the direction opposite to the locking direction X. Then, the latch bar 10 moves linearly by the guide grooves 11a and 11a of the latch base 11 engaged with the guide rails 13 and 14, and when the latch bar 10 moves a predetermined distance L, the one end face 20a of the rack 20 is brought into contact with the abutting step portion 17. The door D is unlocked by moving it straight to the unlocking position where it stops.

  Therefore, in the illustrated slide bolt, when the door D is unlocked in such a manner, when the latch bar 10 in the locking position starts to move linearly in the unlocking direction, the rack 20 and the large gear 45a are moved in the reduction gear train G. On the other hand, the intermediate gear 45 on the locking position side where the small gear 45b meshes with the driven gear 40 starts to rotate, and then the intermediate gear 45 meshes with the driving-side rack 20 while moving the latch bar 10 by a predetermined distance L. The rotation is decelerated according to the number of teeth of the gear 45a, and the number of rotations is reduced to a little less than two. At the same time, the driven gear 40 on the driven side that meshes with the small gear 45b of the intermediate gear 45 has the number of teeth of the small gear 45b. Depending on the difference, the rotation is decelerated and the number of rotations is reduced to 1/2, the rotation is transmitted to the display board 50, the display board 50 is rotated halfway in the reverse direction, and the unlocked state of the door D is switched and displayed. To do.

  Therefore, in the illustrated slide bolt, the locking means A always changes the rotational speed of the driven gear 40 when the latch bar 10 linearly reciprocates the predetermined distance L between the unlocking position and the locking position of the door D as described above. The intermediate gears 35 and 45 are formed by compound two-stage gears with the number of teeth decelerated to ½ rotation for the display plate 50 to switch and display the locking / unlocking state of the door D, and the large gears 35a and 45a of the intermediate gears 35 and 45 are formed. Is held at a height position where the small gears 35b and 45b are engaged with the driven gear 40 to form the reduction gear train G, and the rack 20 and the driven gear 40 in the latch bar 10 are formed. By adopting a configuration arranged between the two, the display means C can be incorporated to reduce the protrusion of the handle B provided outside the door D, and the aesthetic appearance such as the design around the door can be improved.

  In the illustrated slide bolt, even when the latch bar 10 is linearly moved in the unlocking direction X by a predetermined distance L from the locking position to the unlocking position, the intermediate gear 35 on the unlocking position side is now moved from the middle of the movement. The large gear 35a also meshes with the same rack 20 to convert the linear movement into a rotational motion and decelerates the rotation. In the latter half of the movement, the large gear 45a on the locking position side is disengaged from the rack 20, but on the unlocking position side. The intermediate gear 35 can convert linear movement into rotational motion while the large gear 35a is engaged with the rack 20, decelerates the rotation and transmits it to the display board 50, and can switch the lock state of the door D to the outside. .

  Therefore, in the illustrated slide bolt, as described above, the reduction gear train G has a pair of intermediate gears 35 and 45 disposed at opposing positions on both sides in the radial direction of the driven gear 40, and the small gears 35b and 45b are respectively connected to the driven gear 40. When the latch bar 10 is reciprocated by a predetermined distance L linearly between the unlocking position and the locking position by arranging the large gears 35a and 45a to be held at a height position where the large gears 35a and 45a are engaged with the rack 20. During the movement, even if the large gear of the intermediate gear on one side and the rack 20 are disengaged, the linear movement is converted into a rotational motion while the large gear of the intermediate gear on the other side is engaged with the same rack 20, and the rotation Can be transmitted to the display board 50, and the lock / unlock state of the door D can be switched and displayed outside. As a result, the rack 20 provided on the latch bar 10 must be formed unnecessarily long. Is eliminated, the miniaturization of the latch bar 10 advances accordingly, the cost can be reduced.

A Locking means B Handle C Display means D Door G Reduction gear train 10 Latch bar 11 Latch base 20 Rack 30 Rotating shaft 35/45 Intermediate gear 35a / 45a Large gear 35b / 45b Small gear 40 Driven gear 50 Display board

Claims (3)

The inner locking means that locks and unlocks the door by reciprocating the latch bar linearly and the outer handle that incorporates the display means that displays the door locking and unlocking state on the display board are placed on both sides of the door via the rotating shaft. When the latch bar is linearly reciprocated, the driven-side driven gear provided at the shaft base end of the rotary shaft is engaged with the drive-side rack provided on the latch bar via an intermediate gear and the shaft tip is connected to the shaft tip. In the slide bolt that rotates halfway in the forward and reverse directions integrally with the display board, and switches and displays the locking / unlocking state of the door from the display window of the handle,
When the latch bar linearly reciprocates a predetermined distance between the unlocking position and the locking position of the door, the lock means switches and displays the number of rotations of the driven gear and the display plate switches the door unlocking state. / 2 the intermediate gear for decelerating the rotation, the rack and the form a reduction gear train engaged to the driven gear, and characterized by being arranged to reduction gear train in the latch bar, slide bolts .   In the reduction gear train, the intermediate gear is formed by a compound gear in which a driving-side large gear meshing with the rack and a driven-side small gear meshing with the driven gear are coaxially attached to form a two-stage reduction. The slide bolt according to claim 1, wherein:   The reduction gear train has a height at which a pair of intermediate gears are arranged at opposing positions on both sides in the radial direction of the driven gear, and the small gear meshes with the driven gear, while the large gear meshes with the rack. The slide bolt according to claim 2, wherein the slide bolt is held in a position.

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