JP2009002019A - Cylinder lock and lock-unlock device provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock capable of simplifying the assembling work of the whole cylinder lock while attaining satisfactory assembling property of a slide member. <P>SOLUTION: The cylinder lock comprises, in addition to a rotor case 2 and a key rotor 3, a first sleeve 4 movably disposed between the key rotor 3 and the rotor case 2; tumblers 5, 5... separated from the first sleeve 4 by inserting a match key K to the key rotor 3 (key insert hole 30); a second sleeve 7 which performs locking-unlocking operation by rotation of the key rotor 3 in a state where the tumblers 5, 5... are separated from the first sleeve 4; and a slide member 6 which moves in the axial direction by rotation of the first sleeve 4 in a state where the tumblers 5, etc. are engagingly locked by the first sleeve 4 to separate the second sleeve 7 from the key rotor 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cylinder lock and a locking / unlocking device including the same, and more particularly to a cylinder lock for locking / unlocking a door lock mechanism such as a vehicle door panel and a locking / unlocking device including the same.

  As a conventional cylinder lock, there is a cylinder lock that is connected to a door lock mechanism via a link and is rotated by an insertion (insertion) rotation operation of a regular key (match key) (Patent Document 1).

  In addition to the above-described key rotor, the cylinder lock includes a rotor case that rotatably accommodates the key rotor, a first sleeve that can be rotated by the rotation of the key rotor, and a key verification member that can be engaged with and disengaged from the first sleeve. A plurality of tumblers, a pair of slide bars (sliding members) that move to the opposite side of the key insertion side by the rotation of the first sleeve, and the movement of the slide bar to the opposite side of the key insertion side separates the key rotor. And a lever member that rotates in conjunction with the rotation of the second sleeve.

  The rotor case is attached to a vehicle door panel or the like via a bracket, and is entirely formed of a cylindrical body with a mounting flange. A pair of cam portions arranged in parallel at equal intervals in the circumferential direction are provided on the inner peripheral surface of the rotor case.

  The key rotor has a key insertion hole that opens on the end surface on the key insertion side, and a plurality of tumbler holding holes that communicate with the key insertion hole. The key rotor is rotatably accommodated in the rotor case and is engaged with and disengaged from the second sleeve. Connected as possible.

  The first sleeve has a tumbler engaging groove capable of engaging and disengaging a plurality of tumblers, and a pair of guide grooves for moving and guiding a pair of slide bars in the sleeve axial direction, respectively, and the inner peripheral surface of the rotor case and the key rotor It is arrange | positioned so that rotation is possible between these.

  The plurality of tumblers are movably held in the plurality of tumbler holding holes, respectively, and a moving return force is applied by a first spring in the radial direction of the key rotor.

  The pair of slide bars are movably disposed in the guide grooves of the first sleeve and are detachably connected to the rotor case (the pair of cam portions), and a movement return force is applied by the second spring. Yes. Then, the first sleeve moves in the key insertion direction (lever member side) by rotation of the first sleeve, and the second sleeve is detached from the key rotor.

  The second sleeve is disposed in the rotor case so as to be able to rotate and advance / retreat, and is connected to the lever member. And the movement return force and the rotation return force are given by the 2nd spring.

  The lever member is disposed on the axis of the rotor case, and a rotational return force is applied by the second spring. And it is comprised so that a door lock mechanism, such as a vehicle, may be locked and unlocked by rotating together with the second sleeve.

  With the above configuration, when the match key is inserted into the key insertion hole of the key rotor, the plurality of tumblers are disengaged from the tumbler engaging groove of the first sleeve and moved in a direction to be detached from the first sleeve. The key rotor can be rotated independently of the first sleeve. When the match key is rotated in this state, the lever member rotates together with the key rotor and the second sleeve, and the door lock mechanism is locked / unlocked via the link.

On the other hand, when an illegal key or the like is inserted into the key insertion hole of the key rotor, the plurality of tumblers do not release the engagement with the first sleeve, and the key rotor remains rotatable with the first sleeve. When the unauthorized key or the like is rotated in this state, the first sleeve rotates together with the key rotor, and the pair of slide bars are detached from the cam portion of the rotor case, and the engagement (connection) between the key rotor and the second sleeve is performed. To cancel, the key rotor is in a rotation free state with respect to the second sleeve. Thereby, since the lever member is not rotated, the door lock mechanism is not locked / unlocked. In this case, since the key rotor rotates together with the first sleeve, an overload is not applied to the tumbler due to the rotation of the unauthorized key or the like, and deformation (destruction) of the tumbler is prevented.
JP 7-259400 A

  However, according to the cylinder lock of Patent Document 1, each slide bar is relatively small because the pair of slide bars is arranged at a predetermined interval in the circumferential direction with respect to the outer peripheral surface of the first sleeve. Thus, there is a problem that the assembling property of the slide bar with respect to the first sleeve is deteriorated. This is particularly significant in the case of a trunk cylinder lock in which the axial dimension of the rotor case (first sleeve) is large.

  In addition, the need for a pair of slide bars increases the number of parts and complicates the assembly work of the entire cylinder lock.

  Accordingly, an object of the present invention is to provide a cylinder lock and a locking / unlocking device including the cylinder lock that can achieve good assembly of the slide member and can simplify the assembly work of the entire cylinder lock. It is to provide.

(1) To achieve the above object, the present invention provides a rotor case, a key rotor that is rotatably accommodated in the rotor case and has a key insertion hole that opens on an end surface on the key insertion side, and the key rotor. A first sleeve rotatably arranged between the rotor case, a detachable arrangement arranged on the first sleeve, and movably held by the key rotor; A key verification member that is detached from the first sleeve by insertion and a key rotor side end opposite to the key insertion side end of the key rotor are detachably connected, and the key verification member is detached from the first sleeve. A second sleeve that performs locking / unlocking operation by rotation of the key rotor in a state, and a key insertion side of the second sleeve; A cylinder lock comprising: a slide member that moves in the axial direction by rotation of the first sleeve while being locked to the hub, and disengages the second sleeve from the key rotor. To do.

(2) In order to achieve the above object, the present invention provides a locking / unlocking device including a cylinder lock for locking / unlocking a lock mechanism, wherein the cylinder lock includes a rotor case, a rotor case, A key rotor having a key insertion hole opened in an end surface on a key insertion side, a first sleeve rotatably disposed between the key rotor and the rotor case, and the first sleeve A key collating member that is detachably disposed on the key rotor and is movably held by the key rotor, and is detached from the first sleeve by inserting a regular key into the key insertion hole, and a key insertion side end of the key rotor The key collating member is detachably connected to the opposite end of the key, and the key collating member is detached from the first sleeve. A second sleeve to be moved, and disposed on the key insertion side of the second sleeve, and the key collating member is moved in the axial direction by the rotation of the first sleeve in a state where the key collating member is locked to the first sleeve. And a slide member for detaching the second sleeve from the key rotor.

  According to the present invention, it is possible to obtain a good assembling property of the slide member, and it is possible to simplify the assembly work of the entire cylinder lock.

[Embodiment]
FIG. 1 is an exploded perspective view schematically showing an entire cylinder lock according to an embodiment of the present invention. FIG. 2 is a cross-sectional view for explaining a turning operation by inserting a regular key into the cylinder lock according to the embodiment of the present invention. FIG. 3 is a cross-sectional view for explaining a turning operation by inserting an illegal key into the cylinder lock according to the embodiment of the present invention. FIG. 4 is a cross-sectional view showing the cam mechanism of the cylinder lock according to the embodiment of the present invention. FIG. 5 is a view for explaining the main part (a part of the cam mechanism) of the rotor case of the cylinder lock according to the embodiment of the present invention. FIG. 5A is a cross-sectional view showing the rotor case cut in parallel to the axis thereof. FIG.5 (b) is sectional drawing (AA sectional drawing of Fig.5 (a)) which cuts and shows a rotor case at right angles to the axis line.

[Overall configuration of cylinder lock]
In FIG. 1, a cylinder lock denoted by reference numeral 1 can be rotated by rotating a rotor case 2 as an exterior member, a key rotor 3 that is rotated by inserting and rotating a regular key (match key), and rotation of the key rotor 3. The first sleeve 4, a plurality of tumblers 5, 5,... (Shown in FIG. 2 and FIG. 3) as key collating members that can be engaged with and disengaged from the first sleeve 4, and the plurality of tumblers 5, 5,. In the engaged (locked) state with respect to the first sleeve 4, the slide member 6 that moves to the opposite side to the key insertion side by the rotation of the first sleeve 4, and the movement of the slide member 5 to the opposite side to the key insertion side The second sleeve 7 is separated from the key rotor 3 by the lever and the lever member 8 (shown in FIGS. 2 and 3) that rotates in conjunction with the rotation of the second sleeve 7 is generally configured.

(Configuration of rotor case 2)
As shown in FIGS. 2 and 3, the rotor case 2 includes three first body parts 20 to 22 having different inner and outer diameters, and the first body part 20 to the third body part 22. It has a mounting flange 23 that extends around the first body 20, and includes the insertion side of the match key K (leftward in FIGS. 2 and 3) and the opposite side (right in FIGS. 2 and 3). It is formed by a substantially cylindrical body that opens in the direction). For example, it is attached to a vehicle door panel (not shown) via a mounting flange 23.

  As shown in FIG. 4, between the inner peripheral surface of the first body portion 20 and the inner peripheral surface of the second body portion 21, the side opposite to the key insertion side (the lever member side) is directed, and the slide member 6, a stepped surface 24 facing the key insertion side opening end surface (sliding surface) is provided along the circumferential direction. As shown in FIGS. 5A and 5B, the stepped surface 24 is provided with a pair of convex portions 25, 25 arranged in parallel with each other at equal intervals (180 °) in the circumferential direction. Both end surfaces in the circumferential direction of the convex portions 25, 25 are respectively formed by curved surfaces 26, 26 having a gradient descending from the key insertion side toward the opposite side. The front end surfaces of the convex portions 25 and 25 are formed as flat surfaces (planes) 27 and 27 as support surfaces that slidably support a sliding surface (described later) of the sliding member 6. On the inner peripheral surface of the third body 22, there are projecting sleeve positioning projections (not shown) arranged in parallel at equal intervals (180 °) in the circumferential direction.

  A case cover 9 with a through hole is attached to the end of the rotor case 2 on the key insertion side, and a switch unit 10 is attached to the end opposite to the end of the key insertion side.

(Configuration of key rotor 3)
As shown in FIG. 2, the key rotor 3 is accommodated in the rotor case 2 so as to be rotatable about an axis. And it is comprised so that it may rotate by insertion rotation operation of the match key K. FIG. In FIG. 3, the symbol B indicates an unauthorized key.

  The key rotor 3 is provided with a key insertion hole 30 that is open along the axis on the end surface on the key insertion side and into which the match key K can be inserted and removed. Further, the key rotor 3 is provided with a plurality of tumbler holding holes 31, 31,... That are parallel to the axial direction and open in the radial direction. Two tumbler holding holes 31, 31 adjacent to each other among the plurality of tumbler holding holes 31, 31,... Are displaced from each other in the axial direction of the key rotor 3 and are arranged at equal intervals (180 °) in the circumferential direction. .

  On the outer peripheral surface of the key rotor 3, there are provided convex portions 32, 32 for connecting sleeves that protrude in the radial direction and are arranged in parallel with each other at regular intervals (180 °) in the circumferential direction. Further, on the outer peripheral surface of the key rotor 3, an annular first concave groove 33 into which the key rotor retaining plate 300 is fitted on the key insertion side of the convex portions 32, 32, and the key insertion side of the convex portions 32, 32 are provided. An annular second concave groove 34 is provided on the opposite side to fit the washer 301 for retaining the lever member.

  A rotor cover 302 having a key insertion hole 303 and a shutter member 304 capable of opening and closing the key insertion hole 303 from the back surface (inner surface) side of the rotor cover 302 are mounted on the key insertion side end of the key rotor 3. Yes. The shutter member 304 is given an elastic force in the direction of closing the key insertion hole 303 by the return spring 305.

(Configuration of the first sleeve 4)
As shown in FIGS. 2 and 3, the first sleeve 4 is disposed between the inner peripheral surface of the rotor case 2 and the outer peripheral surface of the key rotor 3 so as to be rotatable about an axis, and is formed in a substantially cylindrical shape having a step shape as a whole. Formed by the body.

  As shown in FIG. 1, tumbler engagement holes 40, 40,... For engaging and disengaging a plurality of tumblers 5, 5,. A pair of guides 41, 41 that are parallel to the end of the first sleeve 4 opposite to the key insertion side at equal intervals (180 °) in the circumferential direction and guide the slide member 6 in the axial direction. Is provided. Further, a plate insertion hole 42 through which the key rotor retaining plate 300 is inserted is provided at the end of the first sleeve 4 opposite to the key insertion side end.

(Configuration of tumblers 5, 5, ...)
As shown in FIGS. 2 and 3, the tumblers 5, 5,... Are detachably disposed in the tumbler engaging holes 40, 40,... (Shown in FIG. 1), and the tumbler holding holes 31, 31 are provided. ,... Are movably held. And the elastic force of the return spring (not shown) is given to the direction which engages (locks) with respect to the 1st sleeve 4 (tumbler engagement hole 40,40, ...).

  As shown in FIG. 2, the tumblers 5, 5,... Are provided with insertion holes (not shown) corresponding to the match key K, and convex portions (not shown) protruding from the inner surfaces of these insertion holes. ing. Accordingly, when the match key K is inserted into the insertion holes of the tumblers 5, 5,... By the insertion operation into the key insertion hole 30 of the key rotor 3, the match key K (key groove wall with respect to the convex portions in these insertion holes is inserted. ) Moves in the radial direction (axis line side) of the key rotor 3 to release the engagement with the tumbler engagement holes 40, 40,..., And the key rotor 3 and the first sleeve 4 are moved. It becomes a state which can move independently of each other. When the match key K is pulled out from the insertion holes of the tumblers 5, 5,... By the pulling operation from the key insertion hole 30 of the key rotor 3, the match key K (key groove wall) of the projections in these through holes is extracted. When the pressure is released, the tumblers 5, 5,... Move in the radial direction of the key rotor 3 (side away from the axis) and engage with the tumbler engagement holes 40, 40,. It becomes dependent and can move.

(Configuration of slide member 6)
2 and 3, the slide member 6 is disposed on the key insertion side of the second sleeve 7, and is held on the outer peripheral surface of the first sleeve 4 so as to be movable in the axial direction. It is formed of a single bottomed substantially cylindrical body that opens to the bottom. The slide member 6 is rotated by the rotation of the first sleeve 4 in a state where the tumblers 5, 5,... Are locked in the tumbler engagement holes 40, 40,. It is configured to move in the axial direction (lever member side) against the elastic force of 307 to press the second sleeve 7 and to detach the second sleeve 7 from the key rotor 3 (convex portions 32, 32). Yes. The slide member 6 is rotated by the rotation return of the first sleeve 4, and is moved in the axial direction (on the side opposite to the lever member 8) by the elastic force of the return spring 307 so as to press the second sleeve 7. The second sleeve 7 is configured to be released and locked to the key rotor 3 (convex portions 32, 32).

  The slide member 6 is provided with a key rotor insertion hole 60 whose bottom is opened along both sides in the axial direction and through which the key rotor 3 is inserted. In the inner peripheral portion of the slide member 6, a pair of concave grooves 61 and 61 are provided in parallel with each other in the circumferential direction and movably fitted to the guides 41 and 41 of the first sleeve 4. As shown in FIG. 4, the key insertion side opening end surface of the slide member 6 is formed by a sliding surface 62 that faces the stepped surface 24 (the flat surfaces 27 and 27 of the convex portions 25 and 25) of the rotor case 2. . The opening end portion of the slide member 6 is parallel to each other at equal intervals (90 °) in the circumferential direction from the concave grooves 61, 61, and is respectively formed on the convex portions 25, 25 of the rotor case 2 (stepped surface 24). A pair of notch recesses 63, 63 that can be fitted is provided. The inner surfaces in the circumferential direction of the notch recesses 63 and 63 (only one is shown in FIG. 4), together with the curved surfaces 26 and 26 of the rotor case 2 (protrusions 25 and 25), are cam mechanisms (the first sleeve 4 is rotated). 2 is formed with inclined surfaces 64 and 64 functioning as a mechanism for moving the slide member 6 in a direction in which the sleeve 7 is detached from the key rotor 3.

(Configuration of the second sleeve 7)
As shown in FIGS. 2 and 3, the second sleeve 7 is disposed in the rotor case 2 so as to be rotatable and movable, and can be engaged with and disengaged from the end of the key rotor 3 opposite to the end of the key insertion side. It is connected, and the whole is formed by a substantially cylindrical body through which the key rotor 3 is inserted. Then, in a state where the tumblers 5, 5,... Are detached from the first sleeve 4 (tumbler engagement holes 40, 40,...), The locking and unlocking is performed by the rotation of the first sleeve 4 (key rotor 3). The lever member 8 is rotated (performs locking / unlocking operation). The second sleeve 7 is rotated by the rotation of the first sleeve 4 in a state where the tumblers 5, 5,... Are engaged (locked) with the first sleeve 4 (tumbler engagement holes 40, 40,...). The lever member side end surface of the slide member 6 is slidably brought into contact with the key insertion side opening end surface, and the slide member 6 is rotated (idly rotated) together with the first sleeve 4 and the key rotor 3.

  As shown in FIG. 1, the second sleeve 7 has an opening on the inner peripheral surface (in the radial direction) and the key insertion side, and can be fitted to the convex portions 32, 32 of the key rotor 3. Notch recesses 70, 70,... For connecting the key rotor are provided. An annular flange 71 protruding from the outer peripheral surface is projected from the key insertion side end of the second sleeve 7. As shown in FIG. 1, the outer periphery of the flange 71 opens in the outer peripheral surface (radial direction) and the axial direction of the second sleeve 7, and the convex portion (not shown) of the rotor case 2 (third body portion 22). 2) positioning notches 72 and 72 are provided. Three end portions of the second sleeve 7 opposite to the key insertion side end protrude from the side opposite to the key insertion side, and transmit three parts of rotational power (driving force) to the lever member 8. 73 (only two are shown) are arranged in parallel at equal intervals (120 °) in the circumferential direction.

(Configuration of lever member 8)
As shown in FIGS. 2 and 3, the lever member 8 is accommodated in the rotor case 2 and attached to the end of the key rotor 3 opposite to the key insertion side end by a washer 301. The second sleeve 7 is rotated by rotation, and is configured to be locked / unlocked via a connecting portion 83 to a door lock mechanism (not shown) such as a vehicle.

  A key rotor insertion hole 80 through which the end opposite to the key insertion side end of the key rotor 3 is inserted is inserted in the center of the lever member 8, and the rotational force of the second sleeve 7 is provided around the key rotor insertion hole 80. Receiving holes 81, 81,... (Only one shown) for inserting the transmission pieces 73, 73,.

  At the edge of the lever member 8, a switch pusher 82 (only one is shown) is provided in parallel with each other at a predetermined interval in the circumferential direction and the switch unit 10 is in a switch ON / OFF state.

  Between the key insertion side end surface of the lever member 8 and the lever member side flange end surface of the second sleeve 7, it is located on the outer periphery of the second sleeve 7, and the sliding surface 62 with respect to the slide member 6 is disposed on the rotor. A return spring 307 is provided for applying an elastic force in the direction of approaching the stepped surface 24 of the case 2.

[Operation of cylinder lock 1]
6 (a) and 6 (b) are cross-sectional views for explaining the operation of the cylinder lock according to the embodiment of the present invention by the unauthorized key. FIG. 6A shows a state before the unauthorized key is rotated, and FIG. 6B shows a state after the unauthorized key is rotated. FIGS. 7A and 7B are cross-sectional views showing the cylinder lock shown in FIGS. 6A and 6B rotated 90 ° around the axis. FIG. 7 shows a state before the unauthorized key is rotated, and FIG. 7B shows a state after the unauthorized key is rotated.

  In order to switch the door lock mechanism (not shown) from the locked state to the unlocked state, the match key K is inserted into the key insertion hole 303 of the rotor case 2 (rotor cover 302) and the key insertion hole 30 of the key rotor 3 is inserted. insert. In this case, when the match key K is inserted into the key insertion hole 30 of the key rotor 3, the tumblers 5, 5,... From the engaged state with respect to the tumbler engagement holes 40, 40,. Is moved away from the tumbler engagement holes 40, 40,... Of the first sleeve 4, and the key rotor 3 can be rotated independently of the first sleeve 4. .

  Next, the match key K is rotated in a direction to release the locked state of the door lock mechanism. In this case, when the match key K rotates, this turning force is transmitted to the door lock mechanism via the second sleeve 7 and the lever member 8 and the like, and the door lock mechanism is switched from the locked state to the unlocked state accordingly. .

  Here, when the door lock mechanism is locked, for example, an unauthorized key B or a drill (illegal key B or the like) is inserted into the key insertion hole 30 of the key rotor 3, and the key rotor 3 is rotated by the unauthorized key B or the like in this state. The tumblers 5, 5,... Remain engaged with the tumbler engagement holes 40, 40,... Of the first sleeve 4, so that the first sleeve 4 is rotated together with the key rotor 3.

  In this case, since the slide member 6 rotates together with the first sleeve 4 when the first sleeve 4 rotates, the state shown in FIGS. 6A and 7A, that is, the notch recess 63 of the slide member 6, From the state in which 63 is fitted to the convex portions 25 and 25 of the rotor case 2, the state shown in FIGS. 6B and 7B, that is, the notched concave portions 63 and 63 of the slide member 6 are the convex portions 25 of the rotor case 2. , 25 is displaced in the circumferential direction toward the position where the fitting state is released, and the inclined surfaces 64, 64 of the notch recesses 63, 63 are accordingly formed on the rotor case 2 (projections 25, 25). The curved surfaces 26 and 26 are displaced toward the flat surfaces 27 and 27. As a result, the slide member 6 moves along the guides 41 and 41 on the outer peripheral surface of the first sleeve 4 in a direction away from the stepped surface 24 of the rotor case 2 (against the resilience of the return spring 308). It moves and presses the second sleeve 7 toward the lever member (in the direction away from the key rotor 3).

  Next, when the second sleeve 7 receives a pressing force from the slide member 6 to the lever member side, the second sleeve 7 moves in the pressing direction (the opening direction of the receiving hole 81 in the lever member 8), and the convex portions 32, 32 of the key rotor 3 The fitting state of the second sleeve 7 with the notch recesses 70 is released.

  Then, when the sliding surfaces 62, 62 of the slide member 6 ride on the flat surfaces 27, 27 of the rotor case 2 (convex portions 25, 25) and the first sleeve 4 rotates with respect to the rotor case 2 in this state, the slide The member 6 rotates with respect to the second sleeve 7 (lever member) together with the first sleeve 4 by sliding the sliding surfaces 62, 62 on the flat surfaces 27, 27 of the rotor case 2 (convex portions 25, 25). (Dry). Thereby, since the 2nd sleeve 7 (lever member 8) is not rotated, locking and unlocking of a door lock mechanism are not performed. In this case, since the key rotor 3 rotates together with the sleeve, the tumblers 5, 5,... Are not overloaded by the rotation of the unauthorized key B or the like, and the deformation (destruction) of the tumblers 5, 5,. .

  On the other hand, in order to switch the door lock mechanism (not shown) from the unlocked state to the locked state, the match key K is moved to the rotor case 2 (rotor cover 302) in the same manner as when the door lock mechanism is switched from the locked state to the unlocked state. The key insertion hole 303 is inserted into the key insertion hole 30 of the key rotor 3. In this case, when the match key K is inserted into the key insertion hole 30 of the key rotor 3, the tumblers 5, 5,... From the engaged state with respect to the tumbler engagement holes 40, 40,. It moves in the direction (direction in which the engagement state is released) and is released from the tumbler engagement hole 40 of the first sleeve 4, so that the key rotor 3 can rotate independently of the first sleeve 4.

  Next, the match key K is rotated in the direction in which the door lock mechanism is locked. In this case, when the match key K rotates, this turning force is transmitted to the door lock mechanism via the second sleeve 7 and the lever member 8 and the like, and the door lock mechanism is switched from the unlocked state to the locked state accordingly. .

[Effect of the embodiment]
According to the embodiment described above, the following effects can be obtained.

(1) Since the slide member 6 is formed of a single bottomed substantially cylindrical body, the slide member 6 is larger than the conventional slide member, and good assemblability of the slide member 6 with respect to the first sleeve 4 is obtained. Can do.

(2) Being a single slide member 6 can reduce the number of parts and can simplify the assembly work of the cylinder lock 1.

(3) Since the slide member 6 is disposed in the rotor case 2 so as to be rotatable around the axis and movable in the axial direction, the diameter of the rotor case 2 is larger than that of the mover movable in the case radial direction. The directional dimension can be shortened, and the radial size of the entire structure can be reduced.

  As mentioned above, although the cylinder lock of this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment, It implements in a various aspect in the range which does not deviate from the summary. For example, the following modifications are possible.

(1) In the present embodiment, in order to obtain a cam mechanism for moving the slide member 6 in the axial direction by the rotation of the first sleeve 4, the convex portions 25 are provided on the rotor case 2 (stepped surface 24). In addition, the description has been given of the case where the notch recesses 63 are provided in the slide member 6, but the present invention is not limited to this, and the recess may be provided in the rotor case and the projection may be provided in the slide member. In this case, each circumferential end surface of the concave portion of the rotor case and the convex portion of the slide member is formed of a curved surface or an inclined surface for functioning as a cam mechanism.

(2) In the present embodiment, the case where the door lock mechanism of the vehicle door panel is applied to a locking / unlocking device that locks / unlocks the vehicle is described. However, the present invention is not limited to this, and the vehicle trunk / glove The present invention can also be applied to a locking / unlocking device that locks / unlocks a box locking mechanism or a steering locking mechanism.

1 is an exploded perspective view schematically showing an entire cylinder lock according to an embodiment of the present invention. Sectional drawing shown in order to demonstrate rotation operation by insertion of the regular key with respect to the cylinder lock which concerns on embodiment of this invention. Sectional drawing shown in order to demonstrate rotation operation by insertion of the unauthorized key with respect to the cylinder lock which concerns on embodiment of this invention. Sectional drawing which shows the cam mechanism of the cylinder lock which concerns on embodiment of this invention. (A) And (b) is sectional drawing shown in order to demonstrate the principal part of the rotor case of the cylinder lock which concerns on embodiment of this invention. (A) And (b) is sectional drawing shown in order to demonstrate operation | movement of the cylinder lock which concerns on embodiment of this invention. (A) And (b) is sectional drawing which rotates the cylinder lock shown to FIG. 6 (a) and (b) 90 degrees around an axis line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cylinder lock 2 ... Rotor case, 20 ... 1st trunk | drum, 21 ... 2nd trunk | drum, 22 ... 3rd trunk | drum, 23 ... Mounting flange, 24 ... Stepped surface, 25 ... Convex part, 26 ... Curved surface , 27 ... plane 3 ... key rotor, 30 ... key insertion hole, 31 ... tumbler holding hole, 32 ... convex portion for connecting sleeve, 33 ... first concave groove, 34 ... second concave groove 4 ... first sleeve, 40 ... Tumbler engaging hole, 41 ... guide, 42 ... plate insertion hole 5 ... tumbler 6 ... slide member, 60 ... key rotor insertion hole, 61 ... concave groove, 62 ... sliding surface, 63 ... notch concave portion, 64 ... inclined surface 7 ... second sleeve, 70 ... notch recess, 71 ... flange, 72 ... notch, 73 ... rotational power transmission piece 8 ... lever member, 80 ... key rotor insertion hole, 81 ... receiving hole, 82 ... switch presser, 83 ... Connecting part 9 ... Case cover 10 ... Switch unit 300 ... key rotor omission plates 301 ... lever member missing washer 302 ... rotor cover for preventing for preventing, 303 ... key insertion hole 304 ... shutter member 305, 307 ... return spring K ... matching key B ... wrong key

Claims (3)

A rotor case,
A key rotor that is rotatably accommodated in the rotor case and has a key insertion hole that opens on an end surface on the key insertion side;
A first sleeve rotatably disposed between the key rotor and the rotor case;
A key collating member that is detachably disposed on the first sleeve and that is movably held by the key rotor and is detached from the first sleeve by insertion of a regular key into the key insertion hole;
The key rotor is detachably connected to the end opposite to the key insertion side end, and is locked / unlocked by the rotation of the key rotor in a state where the key collating member is detached from the first sleeve. A second sleeve to perform the operation;
The key sleeve is disposed on the key insertion side of the second sleeve, and in a state where the key collating member is locked to the first sleeve, the key sleeve is moved in the axial direction by rotation of the first sleeve and is moved from the key rotor to the first sleeve. 2. A cylinder lock comprising: a slide member for releasing the sleeve. The slide member has a sliding surface on the key insertion side,
The rotor case has a stepped surface facing the sliding surface inside, and the second sleeve is moved from the key rotor by the rotation of the first sleeve between the stepped surface and the sliding surface. The cylinder lock according to claim 1, wherein a cam mechanism for moving the slide member in a direction of detachment is disposed. In a locking / unlocking device equipped with a cylinder lock for locking / unlocking the locking mechanism,
The cylinder lock is
A rotor case,
A key rotor that is rotatably accommodated in the rotor case and has a key insertion hole that opens on an end surface on the key insertion side;
A first sleeve rotatably disposed between the key rotor and the rotor case;
A key collating member that is detachably disposed on the first sleeve and that is movably held by the key rotor and is detached from the first sleeve by insertion of a regular key into the key insertion hole;
The key rotor is detachably connected to the end opposite to the key insertion side end, and is locked / unlocked by the rotation of the key rotor in a state where the key collating member is detached from the first sleeve. A second sleeve to perform the operation;
The key sleeve is disposed on the key insertion side of the second sleeve, and in a state where the key collating member is locked to the first sleeve, the key sleeve is moved in the axial direction by rotation of the first sleeve and is moved from the key rotor to the first sleeve. 2. A locking / unlocking device comprising a slide member for releasing the sleeve.

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