JP5937049B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device for locking a door to a fixed frame.

  When the handle is rotated on the outside of the door, a locking device that can lock the door to the fixed frame by rotating the stopper on the inner side of the door and engaging the fixed frame is well known. Further, when the handle is rotated, the rod inside the door moves in the vertical and / or horizontal direction of the door and enters the fitting hole formed in the fixed frame so as to be able to be retracted, thereby bringing the door into a locked state. Locking devices that can be used are also well known.

  For example, in the door handle described in Japanese Patent Application Laid-Open No. 8-170466 (Patent Document 1), a stopper fitting to be fitted to a prismatic portion formed at the tip of a shaft portion extending from the operation handle to the inside of the door. Is attached via a machine screw that prevents the prism from falling off. The machine screw enters a screw hole formed at the tip of the shaft portion. In addition to being able to engage the fixed frame itself to lock the door, the stopper is attached with a pair of rods that extend in the vertical direction of the door. Accordingly, the doors can be locked by moving these rods up and down.

JP-A-8-170466

  In the conventional locking device, a stopper is fixed to a prismatic portion formed at the tip of a large-diameter shaft extending from the handle to the inside of the door, and a machine screw is used for the fixing. In such a locking device, if the door in the locked state is subjected to severe vibration due to an earthquake or the like, or if it is repeatedly tried to forcibly open the door without unlocking operation, A force that deforms the prismatic part and the small screw via a stopper acts on the prism and part of the locking device, and a part of the locking device may be damaged or unlocked.

  An object of the present invention is to provide a locking device that is improved so as to be able to withstand severe vibration of a door.

  In order to solve the above problems, the present invention is directed to a shaft portion extending from the outer surface side of the door to the inner surface side and capable of repeating the clockwise and counterclockwise rotational movements, and the outer surface side. An operation unit capable of rotating the shaft part, and a state of being locked and unlocked with respect to the fixed frame by rotating with the rotational movement of the shaft part on the inner surface side. It is a locking device having a fastener that can be made.

  In such a locking device, the shaft portion repeats the rotational movement inside a sleeve-like portion extending from the operation portion toward the inner surface side, and the fastener is a flanged nut that overlaps the sleeve-like portion from the outside. It is fitted to the outer peripheral surface of the cylindrical portion so as to be slidable in the circumferential direction, and has an arm that engages with the fixed frame in the locked state and separates from the fixed frame in the unlocked state, Between the shaft portion and the fastener, the tip portion of the shaft portion extending toward the inner surface side extends in the radial direction of the shaft portion, and is fixed to the tip portion and the fastener. A bridge member capable of rotating the stopper according to the rotational movement of the shaft portion is interposed.

  In one embodiment of the present invention, the shaft portion includes a cylindrical large-diameter portion, and a prismatic portion that extends in the axial direction from the large-diameter portion and forms the tip portion, The bridge member is non-rotatably fitted to the prismatic part in a square hole formed therein.

  In one embodiment of the present invention, the stopper fitting is fitted into a cylindrical portion of the flanged nut in a through hole formed therein, and a peripheral portion of the through hole is fitted into the sleeve-like portion. The spacer member and the flange portion of the flanged nut are sandwiched from the axial direction and are slidable in the circumferential direction of the shaft portion.

  In one embodiment of the present invention, the stopper is formed to be attachable to a rod member that extends in a direction crossing the arm and removably engages with the fixed frame when the door is closed. Has been.

  In one embodiment of the present invention, the operation portion is fixed to the shaft portion in the normal state of the locking device, and the handle portion is detachable from the shaft portion in the normal state of the locking device. Contains one of the handles.

  In the locking device according to the present invention, the shaft portion repeats rotational movement inside the sleeve-like portion extending inward of the door, and the stopper is the outer peripheral surface of the cylindrical portion of the flanged nut that overlaps the sleeve-like portion from the outside. Are slidably fitted in the circumferential direction. The stopper is rotated together with the shaft through a bridge member extending between the shaft and the stopper. If the door vibrates when the arm of the fastener is engaged with the fixed frame and is in the locked position, the door is supported by the fastener and the fixed frame fitted to the outer peripheral surface of the cylindrical portion of the flanged nut. Therefore, the problem that the shaft portion is damaged by the vibration can be prevented.

The drawings illustrate certain embodiments of the invention and include not only the essential components of the invention but also the preferred and preferred embodiments.
The fragmentary perspective view of the locking device in use. The side view of the locking device of FIG. The assembly figure when the locking device of Drawing 1 is seen from the outside of a door. The assembly drawing when the locking device of FIG. 1 is viewed from the inside of the door. The partially broken perspective view of the locking device which shows an example of an embodiment. 6 is a side view of the locking device of FIG. FIG. 6 is an assembly diagram of the locking device of FIG. 5 when viewed from the outside of the door. (A) is an assembly drawing of the locking device of FIG. 5 when viewed from the inside of the door, and (b) is a perspective view of the fastener and the bridge member illustrated in (a).

  The details of the locking device according to the present invention will be described with reference to the accompanying drawings as follows.

  FIG. 1 is a partially broken perspective view showing a usage state of a locking device 10 with a handle which is an example of the locking device according to the present invention. The locking device 10 is attached to a door 6 that opens and closes with respect to the fixed frame 5 via a hinge (not shown). However, only a part of the fixed frame 5 and the door 6 is shown in the figure. The locking device 10 includes a mounting member 11 fixed to the outer surface side of the door 6, an operation unit 14 including a handle 13 capable of reciprocating rotational motion with respect to the mounting member 11, and rotational motion together with the handle 13. And a stopper 15 that reciprocates between a locking position and an unlocking position with respect to the fixed frame 5. The fastener 15 includes a first arm 16 and a pair of second arms 17a and 17b. The first arm 16 is in a locking position behind the edge 5a in the fixed frame 5, and the door 6 is in a locked state. Rod members 18a and 18b are attached to the pair of second arms 17a and 17b, respectively. Each of the rod members 18a and 18b extends in the vertical direction of the door 6, and enters the rod insertion holes 19a and 19b in the fixed frame 5 so as to be able to be retracted. In the illustrated example, when the handle 13 is rotated in the counterclockwise direction indicated by the arrow A, the fastener 15 is also rotated in the counterclockwise direction A, and the engagement of the first arm 16 with the fixed frame 5 is released and the rod members 18a, Each of 18b withdraws from insertion hole 19a, 19b, and locking device 10 and door 6 will be in an unlocking state.

  2 and 3 are a side view of the locking device 10 in FIG. 1 and an assembly view of the locking device 10. However, in FIG. 2, a part of the locking device 10 is shown in a sectional view. In these drawings, the mounting member 11 of the operation portion 14 located on the outer surface side of the door 6 has a sleeve-like portion 20 extending to the inner surface side of the door 6, and the handle 13 is on the inner surface of the door 6 inside the sleeve-like portion 20. It has the axial part 21 extended to the side. The shaft portion 21 has a large-diameter portion 21a fitted to the sleeve-like portion 20 so as to be slidable in the circumferential direction, and a prismatic portion 21b (see FIG. 4) extending from the sleeve-like portion 20. A rubber packing 22 is interposed between the mounting member 11 and the door 6, and insertion holes 23 and 24 for the sleeve-like portion 20 are formed in the door 6 and the rubber packing 22. Inside the door 6, a ring washer 26, a spacer member 27 that covers the ring washer 26, a stopper 15, and a mounting nut 28 with a flange are fitted to the sleeve-shaped portion 20. With respect to the prismatic part 21b in the shaft part 21, the bridge member 31 and the washer 32 are fitted in each of the formed square holes and cannot rotate. A retaining bolt 33 with a spring washer is screwed to the tip of the prismatic portion 21 b via a washer 34.

  FIG. 4 is an assembly view when the locking device 10 is viewed from the inside of the door 6, and a part of the member is cut away. The door 6 and the rubber packing 22 are formed with insertion holes 23 and 24 for the sleeve-like portion 20 of the attachment member 11 of the operation portion 14 and the protrusion 14a that stops the rotation of the attachment member 11 with respect to the door 6. Yes. A large-diameter portion 21a of a shaft portion 21 that is integral with the handle 13 in the normal state of the locking device 10 enters the inside of the sleeve-shaped portion 20 in a rotatable manner. A prismatic portion 21b is formed at the tip of the large diameter portion 21a. The handle 13 that is integral with the shaft portion 21 in the normal state of the locking device 10 can be detached from the mounting member 11 when the locking device 10 is disassembled.

  In the locking device 10 assembled in this manner, the mounting nut 28 has a cylindrical portion 37 and a flange portion 38 having a hexagonal plan shape, and the female screw 39 formed on the inner peripheral surface thereof is a sleeve-like shape. It is screwed into a male screw 20 a formed on the outer peripheral surface of the portion 20. The cylindrical portion 37 enters a through hole 41 formed in the stopper metal 15, and the flange portion 38 cooperates with the spacer member 27 to slidably hold the stopper metal 15 from the axial direction. The stopper 15 is slidable in the circumferential direction with respect to the outer peripheral surface of the cylindrical portion 37. Accordingly, the stopper 15 is in a state of being rotatable in the circumferential direction of the sleeve-like portion 20 via the mounting nut 28. The bridge member 31 extends in the radial direction of the shaft portion 21, and has both end portions 42 a and 42 b and square holes 43 that fit into the prismatic portions 21 b of the shaft portion 21. In the bridge member 31 when fitted to the prismatic portion 21b, both end portions 42a and 42b are accommodated in square hole portions 46a and 46b formed in the second arms 17a and 17b of the fastener 15, respectively. . The square hole portions 46 a and 46 b penetrate the stopper 15 in the thickness direction and have a width that is slightly larger than the width of the bridge member 31.

  In FIG. 1, when the handle 13 is rotated in the counterclockwise direction A, the shaft portion 21 is rotated in the counterclockwise direction A. The bridge member 31 fitted to the prismatic portion 21b also rotates counterclockwise A, and both end portions 42a and 42b of the bridge member 31 are moved through the side wall portions 47a and 47b of the square hole portions 46a and 46b of the fastener 15. The stopper 15 is rotated in the counterclockwise direction A by pressing in the counterclockwise direction A. Then, the engagement (see FIG. 1) of the first arm 16 to the fixed frame 5 in the stopper 15 is released, and the door 6 is unlocked.

  In order to put the door 6 in the unlocked state into the locked state, the handle 13 may be rotated clockwise after the door 6 is closed. When the handle 13 is rotated clockwise, the fastener 15 is rotated clockwise while the bridge member 31 is rotated clockwise, and the first arm 16 of the fastener 15 is moved with respect to the fixed frame 5 as shown in FIG. Can be engaged.

  The locking device 10 can be used in a state where the rod members 18a and 18b are not attached. However, the locking device 10 when the rod members 18a and 18b are attached as shown in FIG. Acts as follows. In FIG. 1, when the handle 13 is operated to rotate the stopper 15 in the counterclockwise direction A, the second arms 17 a and 17 b of the stopper 15 also rotate in the counterclockwise direction A. At that time, the upper rod member 18a in FIG. 1 descends, and the upper end portion thereof retreats from the insertion hole 19a. The lower rod member 18b rises, and the lower end thereof is withdrawn from the insertion hole 19b. Thus, the second arms 17a and 17b are also disengaged from the fixed frame 5, and the door 6 can be opened. The door 6 that is locked to the fixed frame 5 via the first arm 16 and the door 6 that is locked to the fixed frame 5 via the first arm 16 and the second arms 17a and 17b are unlocked. It may vibrate violently due to an operation that tries to open without a lock operation or an earthquake. In such a case, when the closed door 6 vibrates in the direction from the inner surface toward the outer surface, that is, in the direction in which the door 6 opens, the spacer member 27 and / or the flange portion 38 of the mounting nut 28 is fixed to the stopper 15. The movement of the door 6 is stopped in contact with the vicinity of the periphery of the through hole 41. When the door 6 vibrates in the vertical direction or the horizontal direction, the cylindrical portion 37 of the mounting nut 28 integral with the door 6 comes into contact with the vicinity of the periphery of the through hole 41 of the stopper 15 and the movement of the door 6 is stopped. The locking device 10 including such a fastener 15 is a conventional locking device in which the fastener is fitted to the prismatic portion in the shaft portion, or the fastener is fixed to the prismatic portion by a small screw. As compared with the above, damage to the prismatic portion 21b is reduced. The prismatic portion 21b has a generally square end surface 48 (see FIG. 4), and has a screw hole 49 for screwing the bolt 33 into the end surface 48. The length of the diagonal line in the prismatic portion 21b is the same as or smaller than the diameter of the large diameter portion 21a, and the length of one side in the prismatic portion 21b is smaller than the diameter. Therefore, the prismatic part 21b can also be called a small diameter part in comparison with the large diameter part 21a.

  FIG. 5 is a view showing a use state of the handle detachable locking device 210 which is an example of the locking device according to the present invention. The operation unit 214 in the locking device 210 includes an attachment member 211 fixed to the door 6 and a handle 213 having a tip 262 that can be inserted into and removed from a key hole 261 formed in the attachment member 211. When the handle 213 is inserted into the keyhole 261 and rotated in the counterclockwise direction A by a required angle, for example, 90 °, the handle 213 is on the inner surface side of the door 6 in the locked state and is engaged with the edge 5a of the fixed frame 5. The mating stopper 215 also rotates counterclockwise A, disengages from the edge 5a, and the door 6 is unlocked. The tip 262 of the handle 213 rotated by 90 ° is in a position where it cannot be removed from the mounting member 211, and the door 6 opens when the handle 213 is pulled. In the present invention, when the locking device 210 is detachable from the handle, it means that the handle 213 can be inserted into and removed from the operation unit 214 in a normal use state of the locking device 210.

  FIG. 6 is a side view of the locking device 210 of FIG. 5, but a part thereof is shown in a sectional view and a part of the handle 213 is omitted. The attachment member 211 has a sleeve-like portion 220 that extends to the inner surface side of the door 6. Inside the sleeve-shaped portion 220, the shaft portion 221 is fitted in a state in which the shaft portion 221 is slidable in the circumferential direction and cannot be removed. The shaft portion 221 has a large-diameter portion 221 a fitted into the sleeve-like portion 220 and a prismatic portion 221 b extending from the sleeve-like portion 220 toward the inner surface side of the door 6. In the large-diameter portion 221a, a portion that faces the key hole 261 is formed with a key receiving portion (not shown) that has a complementary shape to the tip portion 262 of the key. By combining the tip 262 and the key receiving portion, the handle 213 can rotate the large-diameter portion 221a.

  A ring washer 226, a spacer member 227, a fastener 215, and a mounting nut 228 are fitted to the sleeve-like portion 220 on the outer peripheral surface thereof. For the prismatic portion 221b (see FIG. 8) of the shaft portion 221 extending from the sleeve-shaped portion 220, a disk 263 for restricting the rotation angle when the shaft portion 221 rotates in the circumferential direction, and a bridge The member 231 and the washer 232 are fitted in square holes 263a (see FIG. 8), 243, 232a formed respectively. A retaining bolt 233 with a spring washer is screwed to the tip of the prismatic portion 221 b via a washer 234.

  FIGS. 7 and 8 (a) are assembly drawings of the locking device 210. The locking device 210 of FIG. 7 is in a state when viewed from the outer surface side of the door 6, and the locking device of FIG. The device 210 is in a state when viewed from the inner surface side of the door 6. FIG. 8B is a perspective view of the stopper 215 and the bridge member 231 in FIG. 8A, and shows the positional relationship between the post-square hole 246 of the stopper 215 and the end 242 a of the bridge member 231. Show. However, illustration of the mounting nut 228 shown in FIG. 8A is omitted. In the sleeve-like portion 220 of the mounting member 211, a part 220a of the outer peripheral surface forms a flat surface. The shape of the through-hole 224 formed in the door 6 is complementary to the shape of the sleeve-like portion 220, and the sleeve-like portion 220 inserted into the through-hole 224 rotates both in the clockwise direction and in the counterclockwise direction. There is nothing to do.

  In the locking device 210 assembled in this way, the mounting nut 228 has a cylindrical portion 237 and a flange portion 238 having a hexagonal shape in plan view, and the female screw 239 formed on the inner peripheral surface thereof has a sleeve shape. It is screwed into a male screw 220b formed on the outer peripheral surface of the portion 220. The cylindrical portion 237 enters a through hole 241 formed in the stopper 215, and the flange 238 cooperates with the spacer member 227 to slidably hold the stopper 215 from the axial direction. The stopper 215 is also slidable in the circumferential direction with respect to the outer peripheral surface of the cylindrical portion 237. The bridge member 231 extends in the radial direction of the shaft portion 221, and is formed in both end portions 242a and 242b and one end portion 242b of both end portions 242a and 242b, and is a square hole that fits into the prismatic portion 221b. 243. In the bridge member 231 when fitted to the prismatic part 221b, the other end part 242a of the both end parts 242a and 242b is a square hole part 246 (see FIG. 8 (b).

  5, when the handle 213 is inserted into the key hole 261 of the mounting member 211 and rotated in the counterclockwise direction A in FIG. 5, the shaft portion 221 rotates in the counterclockwise direction A while fitting into the prismatic portion 221b. The joined bridge member 231 is rotated counterclockwise A. One end portion 242a of the both end portions 242a and 242b of the bridge member 231 presses the side wall portion 246a of the square hole portion 246 of the stopper fitting 215 in the counterclockwise direction A, thereby pushing the stopper fitting 215 in the counterclockwise direction A. Rotate to Then, the engagement of the arm 216 with the fixing frame 5 (see FIG. 5) in the stopper 215 is released, and the door 6 is unlocked.

  Also in the locking device 210, the stopper 215 is fitted to the cylindrical portion 237 of the mounting nut member 228 located outside the sleeve-shaped portion 220 having a large diameter in the mounting member 211 so as to be slidable in the circumferential direction. . Further, in the front-rear direction of the door 6, the stopper 215 is sandwiched between the spacer member 227 and the flange portion 238 of the mounting nut 228. Even if the door 6 in the locked state vibrates violently, the prismatic portion 221b that vibrates integrally with the door 6 is not damaged.

DESCRIPTION OF SYMBOLS 5 Fixed frame 6 Door 10 Locking device 13 Handle 14 Operation part 15 Fastening metal fitting 16 Arm (1st arm)
18a Rod member 18b Rod member 20 Sleeve portion 21 Shaft portion 21a Large diameter portion 21b Square columnar portion 27 Spacer member 28 Mounting nut 31 Bridge member 37 Cylindrical portion 38 Flange portion 41 Through hole 43 Square hole 210 Locking device 213 Handle 214 Operation Part 215 Fastening bracket 216 Arm 220 Sleeve part 221 Shaft part 221a Large diameter part 221b Square pillar part 227 Spacer member 228 Mounting nut 231 Bridge member 237 Cylindrical part 238 Flange part 241 Through hole 243 Square hole

Claims (5)

A shaft portion extending from the outer surface side of the door to the inner surface side and capable of repeating a clockwise and counterclockwise rotational movement; and an operating portion on the outer surface side and capable of rotating the shaft portion. A locking device having a stopper that is on the inner surface side and can be rotated with the rotational movement of the shaft portion to lock the door with respect to a fixed frame. ,
The shaft portion repeats the rotational movement inside a sleeve-like portion extending from the operation portion toward the inner surface side,
The fastener is fitted to the outer peripheral surface of the cylindrical portion of the flanged nut that overlaps the sleeve-like portion from the outside so as to be slidable in the circumferential direction, and engages with the fixed frame in the locked state, An arm that is detached from the fixed frame in the unlocked state;
Between the shaft portion and the fastener, the tip portion of the shaft portion extending toward the inner surface side extends in the radial direction of the shaft portion, and is fixed to the tip portion and the fastener. The locking device according to claim 1, further comprising a bridge member capable of rotating the stopper with the rotational movement of the shaft portion.   The shaft portion includes a cylindrical large-diameter portion and a prismatic portion that extends from the large-diameter portion in the axial direction to form the tip portion, and the bridge member has a square hole formed therein. The locking device according to claim 1, wherein the locking device is non-rotatably fitted to the prismatic part.   The stopper is fitted to a cylindrical portion of the flanged nut in a through hole formed therein, and a spacer member in which a peripheral edge of the through hole is fitted to the sleeve-like portion, and the flanged nut The locking device according to claim 1, wherein the locking device is slidable in the circumferential direction of the shaft portion by being sandwiched by the flange portion of the shaft portion.   4. The structure according to claim 1, wherein the stopper is formed to be attachable to a rod member that extends in a direction intersecting with the arm and removably engages with the fixed frame when the door is closed. The locking device according to any one of the above.   2. The handle according to claim 1, wherein the operation portion is fixed to the shaft portion in a normal state of the locking device, and a handle is removable from the shaft portion in a normal state of the locking device. 4. The locking device according to any one of 4 above.

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