JP4738321B2 - Lock - Google Patents

Description

  The present invention relates to a lock in which a handle used to open and close the door also serves as a lock key attached to the door.

Conventionally, a lock in which a handle used to open and close the door is formed integrally with a lock attached to the door is known, and one of them is, for example, Japanese Patent Application Laid-Open No. 2004-92283 (Patent Document 1). There is a locking device disclosed in. The locking device includes a cylindrical housing portion that is attached to a door, a cam cylinder portion that rotates in the circumferential direction inside the housing portion, and a slide that can slide in the circumferential direction and the axial direction inside the cam cylinder portion. A handle for rotating the cam barrel is integrally formed with the cam barrel. The handle extends from the housing part to the outside of the door, and also serves as a handle for opening and closing the door. A claw fitting is attached to the end of the main shaft extending toward the inside of the door. When the handle is reciprocally rotated outside the door, the claw metal fitting repeats the locked state and the unlocked state with respect to the fixed frame to which the door is attached inside the door. Further, in this locking device, the cam is formed in the cam cylinder portion, and when the cam cylinder portion is reciprocally rotated by the handle, the claw metal fitting in the locked state moves closer to and away from the inner surface of the fixed frame. Iterate. If the attachment state of the lock to the door is adjusted so that the claw metal fittings are in close contact with the inner surface of the fixed frame when approaching, the door can be easily brought into close contact with the outer surface of the fixed frame.
JP 2004-92283 A

In the known locking device, when the door is in the locked state or the unlocked state, the handle extending to the outside of the door may get in the way.
Therefore, the present invention has an object to improve the known device so that the handle can be detached from the rotor.

  In order to solve the above-mentioned problems, the present invention is directed to a case having a cylindrical part extending inward from the outside of a door and fixed to the door, and a periphery of the case inside the cylindrical part. A cylindrical rotor which is rotatably fitted in a direction, and is fitted inside the rotor so as to be slidable in a circumferential direction and an axial direction, and the rotor in a direction from the outside to the inside of the door A shaft having a portion extending from the handle, and a claw fitting for locking the door to the fixed frame can be attached to the extending portion, and a handle extending from the rotor to the outside of the door is provided. When the case is rotated in the circumferential direction, the shaft and the claw fitting together with the rotor rotate at a required angle, and then the shaft and the claw fitting are moved to the rotor by the action of a cam provided on the rotor. In the axial direction is a tablet that moves in a direction toward the outside from the inside of the door.

In such a lock with a handle, the present invention is characterized as follows. The rotor and the handle are formed separately. The handle includes a shaft portion that extends in an axial direction of the rotor, and a projecting portion that projects outwardly from one of both sides and one side of the shaft portion in the radial direction at one of both end portions of the shaft portion. And a grip portion formed on the other end of the both end portions. The rotor has a front recess capable of allowing the protruding portion of the handle and the shaft portion in the vicinity thereof to enter and retract from the outside of the door. The front concave portion is formed so that the protruding portion of the handle that has entered is pivotable about the shaft portion, and has a peripheral wall parallel to the axial direction of the rotor. The peripheral wall is provided with a first peripheral wall portion in which the protrusion turns and press-contacts from the turning direction when the handle rotates in the locking direction, and the handle rotates in the unlocking direction. When this is done, the projecting portion turns to form a second peripheral wall portion that is pressed from the turning direction. The case covers a part of the front concave portion of the rotor from the outside of the door, and can guide one of the both end portions including the protruding portion of the handle from the door to the front concave portion. A front portion having a keyhole is formed. In the unlocked state and the locked state, the first peripheral wall portion is disposed so as to overlap the keyhole, the second peripheral wall portion is disposed so as to be hidden behind the front surface portion, and the projecting portion is The handle is turned from the unlocked state by rotating the handle 180 ° in the direction of locking the lock in a state of being pressed against the first peripheral wall, and the lock is pressed in the state where the protrusion is pressed against the second peripheral wall. The lock is formed so as to change from the locked state to the unlocked state by rotating the handle 180 ° in the unlocking direction.
In one of the preferred embodiments of the present invention, when the handle is rotated 180 ° in the locking direction, the claw fitting is turned by the first 90 ° rotation and the nail is fixed to the fixed frame. When the bracket is engaged and the claw bracket is moved closer to the door by the next 90 ° rotation, the handle is first rotated 180 ° in the unlocking direction. The claw fitting is moved away from the door by the 90 ° rotation, and the claw fitting is turned by the next 90 ° rotation to release the engagement of the claw fitting with the fixed frame. A lock is formed.

  In the lock according to the present invention, the rotor and the handle are separate, and the handle can be removed from the keyhole when the lock is in the locked state and the unlocked state. It does not get in the way from the rotor to the outside of the door. When the handle is unlocked, the protrusion of the handle is passed through the key hole to enter the front recess of the rotor and further swung until it contacts the second peripheral wall. If the handle is pulled toward the outside of the door there, the protruding portion of the handle pushes the front portion from behind, so that the door can be opened.

  The details of the lock according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a partially broken side view of a lock in an unlocked state. The lock includes a lock body 1 and a handle 2, and the handle 2 is used as a key of the lock body 1 and also for opening and closing the door 3. The figure also shows the door 3 to which the lock body 1 is attached, and the outer surface 4a and the inner surface 4b of the fixed frame 4 to which the door 3 is attached so as to be openable and closable are partially shown by phantom lines. It is shown. The door 3 is in contact with the outer surface 4a of the fixed frame 4 and closed. The lock body 1 includes a case 11 that is fixed to the door 3 using a nut 6, a ring washer 7, and a packing 8, a shaft 13 that is housed in the case 11, and a stopper cam follower 14 that is attached to the shaft 13. The claw fitting 19 is fixed to the shaft 13 via the screw 16 and washers 17 and 18 behind the stopper cam follower 14 (to the right in the figure). The front portion 31 of the case 11 has a keyhole 32 that is outside the door 3 and that allows the distal end portion 22 of the handle 2 to enter and exit. The handle 2 includes a cylindrical shaft portion 21 and a pair of projecting portions 23a and 23b extending outward in the radial direction on both sides in the radial direction at the tip portion 22 which is one of both end portions of the shaft portion 21. , And a grip portion 24 formed on the other end portion of the shaft portion 21. In the illustrated lock body 1, the distal end portion 22 of the handle 2, that is, the protruding portions 23 a and 23 b and the shaft portion 21 in the vicinity thereof are inserted into the key hole 32 of the case 11, and the handle 2 is rotated clockwise A (see FIG. 3). When rotated 90 °, the stopper cam follower 14 and the claw fitting 19 rotate 90 ° clockwise A. When the handle 2 is further rotated 90 ° in the clockwise direction A, the stopper cam follower 14 and the claw fitting 19 move horizontally in the direction from the inside to the outside of the door 3 so that the claw fitting 19 becomes a virtual line, and the fixed frame 4, the door 3 can be brought into close contact with the outer surface 4 a of the fixed frame 4. For example, there is no gap between the door 3 and the outer surface 4a that are in close contact to allow slight movement of the door 3 and passage of water or air.

  FIG. 2 is a cross-sectional view of the lock body 1 in FIG. In the case 11, a keyhole 32 is formed in the front surface portion 31, and a cylindrical portion 33 extends from the front surface portion 31 toward the inside of the door 3. The outer peripheral surface of the cylindrical portion 33 is formed so that the nut 6 can be screwed together. The rotor 12 is fitted inside the cylindrical portion 33.

  The rotor 12 is in contact with the inner peripheral surface 34 of the cylindrical portion 33 through an O-ring 36 so as to be slidable in the circumferential direction. A stopper ring 37 is provided behind the rotor 12 (on the right side in the figure) to suppress the movement of the rotor 12 in the axial direction and prevent the rotor 12 from falling off the case 11. Such a rotor 12 has a rear recess 41 that opens in the direction from the outside of the door 3 toward the inside, and a front recess 42 that opens toward the outside of the door 3. The rear recess 41 has a circular cross-sectional shape in the radial direction, in which the coil spring 43 is accommodated, and the front end 51 of the shaft 13 is fitted. The coil spring 43 is in a stored state, with the shaft 13 being in pressure contact therewith. The shaft 13 has a cylindrical shape and is slidable with respect to the peripheral surface 44 of the rear recess 41 in the circumferential direction and the axial direction. In addition, cam holes 47a and 47b are formed in the peripheral wall 46 of the rear recess 41 at portions facing each other in the radial direction (see FIG. 3). A through hole 52 extending in the radial direction is formed in the front end portion 51 of the shaft 13 fitted in the rear concave portion 41, and both end portions 53 a and 53 b of the cam follower pin 53 inserted into the through hole 52. Has entered the cam holes 47a and 47b. The front recess 42 in the rotor 12 is formed so that the protrusions 23a and 23b of the handle 2 can enter through the key hole 32 as described in detail in FIGS. Projections 48 are formed on the twelve rotational axes. When the handle 2 is inserted into the keyhole 32, the protrusion 48 can enter the recess 26 (see FIG. 1) of the distal end portion 22 of the handle 2 to guide the handle 2 to an appropriate position of the keyhole 32. .

  The shaft 13 in FIG. 2 has a rear end portion 54 extending rearward (to the right in the drawing) from the case 11, and the stopper cam follower 14 and the claw fitting 19 rotate together with the shaft 13 at the rear end portion 54. It is attached so that it can.

FIG. 3 is an exploded perspective view of the lock body 1 in the unlocked state shown in FIGS. 1 and 2, and the rotor 12 and the shaft 13 are assembled. In addition, the handle 2 and the claw fitting 19 are shown together in this figure . Cam 35a for the rear end of the cylindrical portion 33 in to case 11 to restrict the movement of the shaft 13, 35b are formed. A portion of the stopper cam follower 14 that moves in accordance with the cam 35a is indicated by an imaginary line.

  In the front end portion (upper portion in the figure) of the rotor 12 in FIG. 3, a front concave portion 42 and a protrusion 48 for allowing the distal end portion 22 of the handle 2 to enter are formed. The front recess 42 has a peripheral wall 71 parallel to the rotation axis (not shown) of the rotor 12, and the handle 2 is provided on the peripheral wall 71 when the handle 2 rotates in the clockwise direction A around the protrusion 48. A pair of first peripheral wall portions 71a, 71b in which the pair of protrusions 23a, 23b are pressed from the clockwise direction A, and a pair of second peripheral walls in pressure contact from the counterclockwise direction B when the handle 2 rotates in the counterclockwise direction B Parts 72a and 72b. The pair of cam holes 47a and 47b formed in the peripheral wall portion 46 of the rotor 12 are formed symmetrically with respect to the rotation axis of the rotor 12, and FIG. 3 shows only one of the cam holes 47a. Appears. The cam hole 47a includes a first slope 73 and a second slope 74. The first slope 73 has an upward slope in the counterclockwise direction B, while the second slope 74 has a downward slope in the counterclockwise direction B. Have The first inclined surface 73 has the same inclination angle as the second inclined surface 74, but the length of the inclined surface is made longer than that of the second inclined surface. One end portion 53a of the cam follower pin 53 except for the cam hole 47a including the first and second inclined surfaces 73 and 74 is slidable with respect to the first and second inclined surfaces 73 and 74. In FIG. 43 (see FIG. 2) and is in pressure contact with the first inclined surface 73.

  In FIG. 3, the rear end portion 54 of the shaft 13 extending downward from the rotor 12 has a substantially square cross-sectional shape. The stopper cam follower 14 and the claw fitting 19 attached to the rear end portion 54 are formed with square through holes 76 and 77 that allow the rear end portion 54 to be fitted. A pair of protrusions 78a and 78b are formed on the outer peripheral surface of the stopper cam follower 14 so as to extend in opposite directions in the radial direction.

  The rotor 12 to which the shaft 13 is assembled as shown in FIG. 3 is inserted into the case 11 from below in the figure. After the insertion, the stopper ring 36 is set on the inner peripheral surface of the case 11. Further thereafter, the stopper cam follower 14 and the claw fitting 19 are attached to the shaft 13.

  FIG. 4 is a view taken along the line IV-IV in FIG. 2, in which only the cam 35 of the case 11 is shown by a solid line, and the shaft 13 and the pair of protrusions 78 a and 78 b of the stopper cam follower 14 are shown. Shown in phantom lines. Further, the clockwise direction A in FIG. 3 appears as a virtual line A in FIG. The cam 35 is formed symmetrically with respect to the axis P of the cylindrical portion 33 in the case 11, and as is apparent when referring to FIGS. 3 and 4, the first stopper surfaces 91 a and 91 b that are parallel to each other; Smooth flat surfaces 93a and 93b orthogonal to the first stopper surfaces 91a and 91b, second stopper surfaces 92a and 92b orthogonal to the flat surfaces 93a and 93b and parallel to each other, and a trough deeper toward the front surface portion 31 of the case 11. 94a, 94b. In addition to being orthogonal to the planes 93a and 93b, the first stopper surfaces 91a and 91b and the second stopper surfaces 92a and 92b are also orthogonal to each other. When the lock body 1 is in the unlocked state, the protrusions 78a and 78b of the stopper cam follower 14 are in contact with the first stopper surfaces 91a and 91b from the counterclockwise direction B, respectively.

  To close the door 3 and lock the lock, the following procedure is used. When the handle 2 having the tip portion 22 entering the front concave portion 42 of the rotor 12 is rotated 90 ° in the clockwise direction A, the rotor 12 and the shaft 13 are rotated in the clockwise direction A, and the stopper cam follower 14 is also rotated in the clockwise direction. Rotate 90 ° to A, and the protrusions 78a and 78b turn in a state parallel to the flat surfaces 93a and 93b to contact the second stopper surfaces 92a and 92b from the clockwise direction A, and the rotation of the shaft 13 stops. When the shaft 13 rotates, the claw fitting 19 that extends upward in the figure and is in the unlocked state changes to the claw fitting 19 that extends in the lateral direction in the figure and is in the locked state. When the handle 2 is further rotated 90 ° in the clockwise direction A, only the rotor 12 is rotated in the clockwise direction A. As can be seen from FIG. 3, the cam hole 47 a in the rotor 12 also moves in the clockwise direction A at that time, so that the first inclined surface 73 of the cam hole 47 a connects the end 53 a of the cam follower pin 53 with the front surface portion 31 of the case 11. 3, that is, move upward (to the left in FIG. 2) in FIG. 3. Although not shown, the first inclined surface of the cam hole 47b moves the end portion 53b of the pin 53 upward in FIG. 3 in the same manner as the first inclined surface 73 of the cam hole 47a. As a result of the movement of both end portions 53a and 53b of the pin 53, the shaft 13 is pressed by the pin 53 and moves upward in FIG. 3 (leftward in FIG. 2) while compressing the spring 43. During this time, the stopper cam follower 14 integrated with the shaft 13 has its projections 78a and 78b enter the valleys 94a and 94b in the cam 35 of the case 11 so that the movement of the shaft 13 is not hindered. . Further, the claw fitting 19 integrated with the shaft 13 approaches the inner surface 4 b of the fixed frame 4. When the rotation of the shaft 13 stops and only the rotor 12 rotates 90 ° clockwise A, the first inclined surface 73 passes through the end portion 53a of the pin 53. In other words, the end portion 53a is the first portion. When the climbing of the slope 73 is completed, the end portion 53a descends the second slope 74. The length of the first slope 73 is long enough to press the claw metal fitting 19 against the fixed frame 4, but the length of the second slope 74 is much larger than the length of the first slope 73. It is short, for example, about the diameter of the end 53a. When the second inclined surface 74 is released from the handle 2 rotated by 180 ° in total, the end 53a automatically descends the first inclined surface 73 and is fixed by the action of the spring 43 in the biased state. The door 3 that should have been brought into close contact with the outer surface 4a of the frame 4 is separated from the front surface 4a, and a gap is prevented from being formed between the doors 3 and 4a.

  When unlocking the lock body 1, the following procedure is used. The handle 2 is rotated 90 ° counterclockwise B to rotate the rotor 12, and the end 53 a of the cam follower pin 53 on the second inclined surface 74 is moved to the first inclined surface 73 to return to the state shown in FIG. 2. Then, the claw fitting 19 is separated from the inner surface 4b of the fixed frame. When the handle 2 is further rotated 90 ° in the counterclockwise direction B, the rotor 12 and the shaft 13 are integrally rotated in the counterclockwise direction B, and the protrusions 78a and 78b of the stopper cam follower 14 are connected to the cams 35a and 35b. The lock body 1 is brought into an unlocked state by abutting against the first stopper surfaces 81a and 81b of the cam 35.

  5 and 6 are a front view of the front surface portion 31 of the case 11 in which the keyhole 32 is formed, and a front view of the front recessed portion 42 in the rotor 12. FIG. 5 shows the lock body 1 in an unlocked state. Each of the concave portion 42 when it is in the position, the protrusions 23a and 23b of the handle 2 that has entered the concave portion 42, the claw fitting 19 when it is in the unlocked state, and the claw fitting 19 when it is in the locked state. The protrusions 23a and 23b of the handle 2 are shown in phantom lines in FIG. Note that the protrusions 23a and 23b in FIG. 5 are in a state when the protrusions 23A and 23b in FIG. As shown in FIG. 5, the edge of the keyhole 32 has arc-shaped first and second edges 81 and 82 facing in the vertical direction of the figure and arc-shaped first and second edges facing in the horizontal direction of the figure. 3, fourth edge portions 83 and 84, fifth and sixth edge portions 85 and 86 parallel to each other in the left-right direction above the third and fourth edge portions 83 and 84, and third and fourth edges It includes seventh and eighth edge portions 87 and 88 that are parallel to each other and face each other in the left-right direction below the portions 83 and 84. In the front concave portion 42 of the rotor 12 in the unlocked state in FIG. 5, one of the first peripheral wall portions 71 a and 71 b in the front concave portion 42 is positioned so as to overlap the eighth edge 88 of the key hole 32. Yes, the other peripheral wall portion 71b of the first peripheral wall portions 71a and 71b is in a position overlapping the fifth peripheral wall portion 85 of the keyhole 32. Further, the pair of second peripheral wall portions 72 a and 72 b in the front recessed portion 42 are hidden behind the front surface portion 31 in the case 11. In order to open the door 3 when the rotor 12 is in the state shown in FIG. 5, the distal end portion 22 of the handle 2 is passed through the key hole 32 to enter the front recess 42 of the rotor 12. Next, the handle 2 is rotated in the counterclockwise direction B until each of the projecting portions 23a and 23b in the distal end portion 22 comes into contact with each of the second peripheral wall portions 72a and 72b in the front recess 42. In the lock body 1, when each of the first peripheral wall portions 71a and 71b of the rotor 12 overlaps with any of the fifth and eighth peripheral wall portions 85 and 88 of the key hole 32, the first peripheral wall portions 71a and 71b, The following relationship exists between the two peripheral wall portions 72a and 72b. That is, the protrusions 23a and 23b of the handle 2 that are in contact with the second peripheral wall portions 72a and 72b are preferably of a length in the protruding direction so that each of the protrusions 23a and 23b is behind the front surface portion 31 of the case 11. First with respect to the protrusions 23a and 23b pivoting around the protrusion 48 so that more than 1/2 is behind it, more preferably the entire length in the protruding direction is behind it. The opening angle α between the peripheral wall portion 71a and the second peripheral wall portion 72b and the opening angle β between the first peripheral wall portion 71b and the second peripheral wall portion 72a are adjusted. However, the sizes of the opening angle α and the opening angle β are the same. Therefore, when the handle 2 rotated counterclockwise B as shown in the drawing is pulled toward the outside of the door 3, the door 3 opens. The handle 2 can be extracted from the keyhole 32 by rotating it clockwise A until it comes into contact with the first peripheral wall portions 71a, 71b of the rotor 12.

  5 and 6, the door 3 is brought into the locked state by the following procedure. First, the door 3 is closed when the claw bracket 19 is in the unlocked state. Next, the handle 2 is inserted into the keyhole 32 in FIG. 5 and rotated 90 ° in the clockwise direction A. Then, the upward claws 19 in FIG. 5 turn 90 degrees clockwise A and turn sideways, and come behind the fixed frame 4. When the handle 2 is further rotated by 90 °, the rotor 12 rotates, while the shaft 13 and the claw fitting 19 attached to the shaft 13 move from the inside to the outside of the door 3 so that the claw fitting 19 is fixed. The inner surface 4b of the frame 4 is pressed into contact, and the door 3 comes into close contact with the outer surface 4a of the fixed frame 4 to complete the locking operation. The claws 19 in this state are indicated by phantom lines in FIG. The positional relationship between the keyhole 32 and the front recess 42 of the rotor 12 when the lock body 1 is in the locked state is the same as that in FIG. 5, and the protrusions 23 a and 23 b of the handle 2 are seen from the keyhole 32. The handle 2 can be removed from the keyhole 32 immediately after the locking operation is completed. When the lock body 1 is in the locked state, the rotor 12 can rotate only in the counterclockwise direction B.

  Next, in order to make the door 3 locked based on the state of FIGS. First, the distal end portion 22 of the handle 2 is passed through the keyhole 32, and the handle 2 is rotated in the counterclockwise direction B until the projecting portions 23a and 23b come into contact with the second peripheral wall portions 72a and 72b in the front concave portion 42 of the rotor 12. From here, the handle 2 is rotated by 90 ° to press the second peripheral wall portions 72a and 72b to rotate the rotor 12. Due to the rotation of the rotor 12, the shaft 13 and the claw fitting 19 are moved in a direction away from the inner surface 4 b of the fixed frame 4. The handle 2 is further rotated by 90 ° to return the claw fitting 19 to the unlocked position. The handle 2 at that time has the protrusions 23a and 23b in the state shown in FIG. 5 and is hidden behind the front surface portion 31 of the case 11, so that when the door 3 is opened, the handle 2 faces the outside of the door 3. Just pull. When it is desired to remove the handle 2 from the lock body 1, the handle 2 is rotated in the clockwise direction A so that the protruding portions 23 a and 23 b can be seen through the keyhole 32.

  As is clear from these operations, when the door 3 is opened using the handle 2, the protrusions 23a and 23b of the handle 2 that have entered the front recess 42 of the rotor 12 are moved to the second peripheral wall portions 72a and 72b of the front recess 42. The handle 2 is rotated until it touches. The second peripheral wall portions 72a and 72b are behind the front surface portion 31 of the case 11, and the projecting portions 23a and 23b contacting the second peripheral wall portions 72a and 72b are hidden behind the front surface portion 31 (see FIG. 5). . When the handle 2 is pulled, the projecting portions 23 a and 23 b press the inner surface of the front surface portion 31 with almost the entire area facing the inside of the front surface portion 31. In particular, if at least half of the length of the protrusions 23a and 23b is hidden behind the front face 31, the force pulling the handle 2 is concentrated on a very small part of the protrusions 23a and 23b, or the front face. It is possible to prevent concentration on a small area on the inner surface of 31. Therefore, the case 11 and the handle 2 can prevent the occurrence of the problem that the force when opening the door 3 is concentrated on the local area and is easily damaged. Further, as can be understood from FIG. 5, in the lock body 1 in the locked state, the second peripheral wall portions 72 a and 72 b of the front concave portion 42 to be pressed to unlock the lock body 1 are keyholes in the counterclockwise direction B. 32 is far away from the sixth and seventh edge portions 86 and 87 of the case 32 and is hidden behind the front surface portion 31 of the case 11. Therefore, the rotor 12 is operated by operating the second peripheral wall portions 72 a and 72 b through the keyhole 32. Is difficult to move counterclockwise B. In the lock body 1 in the locked state, when the second peripheral wall portions 72a and 72b are located in the vicinity of the keyhole 32, it is easy to press the second peripheral wall portions 72a and 72b in the counterclockwise direction B. If the second peripheral wall portions 72a and 72b are moved inadvertently in the counterclockwise direction B by an unauthorized operation or the like, the claw bracket 19 is separated from the inner surface 4b of the fixed frame 4, and the outer surface 4a of the fixed frame 4 and the door There may be a gap that should not exist between the three.

  Although the handle 2 in the illustrated example has protrusions 23a and 23b on both sides in the radial direction of the distal end portion 22, the present invention can also be implemented by the handle 2 having a protrusion only on one side in the radial direction. is there.

  According to the present invention, it is possible to manufacture a lock in which a handle that serves as a handle for opening and closing the door and a key for locking and unlocking the lock body is detachable.

The partially broken side view of a lock. Sectional drawing of a lock. The exploded perspective view of a lock. The figure which shows the cam of a case. The figure which shows the front part of a case. The figure which shows the front recessed part of a rotor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lock body 2 Handle 3 Door 4 Fixed frame 11 Case 12 Rotor 13 Shaft 19 Claw metal fitting 21 Shaft part 23a, 23b Protrusion part 24 Gripping part 31 Front part 32 Key hole 33 Cylindrical part 42 Front recessed part 47a, 47b Cam 71 Circumferential wall 71a , 71b First peripheral wall portion 72a, 72b Second peripheral wall portion

Claims (2)

A case having a cylindrical portion extending inward from the outside of the door and fixed to the door; a cylindrical rotor that is fitted inside the cylindrical portion so as to be rotatable in the circumferential direction; and A shaft having a portion that is slidably fitted in the circumferential direction and the axial direction inside the rotor and that has a portion extending from the rotor in a direction from the outside to the inside of the door, and the extending portion Can be attached with a claw fitting for locking the door to the fixed frame, and when the handle extending from the rotor to the outside of the door is rotated in the circumferential direction of the case, the rotor and the shaft After the claw metal fitting rotates at a required angle, the shaft and the claw metal fitting are moved from the inside to the outside of the door in the axial direction of the rotor by the action of a cam provided on the rotor. The lock to be dynamic,
The rotor and the handle are separate;
The handle includes a shaft portion that extends in an axial direction of the rotor, and a projecting portion that projects outwardly from one of both sides and one side of the shaft portion in the radial direction at one of both end portions of the shaft portion. And a grip portion formed on the other end of the both end portions,
The rotor has a front recess capable of causing the protrusion of the handle and the shaft portion in the vicinity thereof to enter and retract from the outside of the door, and the front recess is the protrusion of the handle that has entered. The portion is formed so as to be pivotable about the shaft portion, and has a peripheral wall parallel to the axial direction of the rotor,
When the handle rotates in the direction to lock the lock, the protrusion turns and the handle rotates in the direction to unlock the lock. A second peripheral wall portion that is sometimes formed so that the protrusion turns and is pressed from the turning direction;
The case covers a part of the front concave portion of the rotor from the outside of the door, and can guide one of the both end portions including the protruding portion of the handle from the door to the front concave portion. A front part having a keyhole is formed,
In the unlocked state and the locked state, the first peripheral wall portion is disposed so as to overlap the keyhole, the second peripheral wall portion is disposed so as to be hidden behind the front surface portion, and the projecting portion is The handle is turned from the unlocked state by rotating the handle 180 ° in the direction of locking the lock in a state of being pressed against the first peripheral wall, and the lock is pressed in the state where the protrusion is pressed against the second peripheral wall. The lock formed so as to be changed from a locked state to an unlocked state by rotating the handle by 180 ° in the unlocking direction. When the handle is rotated 180 ° in the locking direction, the claw fitting is turned by the first 90 ° rotation, and the claw fitting is engaged with the fixed frame. While the claw fitting is moved so as to approach the door by rotation, when the handle is rotated 180 ° in the unlocking direction, the claw fitting is moved by the first 90 ° rotation. The lock according to claim 1, wherein the lock is moved so as to be separated from the door, and the claw fitting is turned by the next rotation of 90 ° to release the engagement of the claw fitting with the fixed frame.

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