JP2012031681A - Key rotor and cylinder lock having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key rotor and a cylinder lock having the same which can prevent deposition of foreign materials in an operation area of a tumbler and eliminate the risk of adverse effects on operation of the tumbler.SOLUTION: A key rotor 3 comprises: a key insertion/extraction hole 30 for inserting/extracting a normal key K; and a tumbler holding hole which communicates with the key insertion/extraction hole 30 and movably holds a tumbler for key matching. The key insertion/extraction hole 30 has a protrusion 35 which is for removing foreign materials and fits into a key groove k of the normal key K, and the protrusion 35 for removing foreign materials is disposed on the key insertion side of the tumbler holding hole.

Description

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

  As is well known, a cylinder lock for locking / unlocking a door lock mechanism of a door panel is incorporated in a vehicle such as an automobile.

  Conventionally, this type of cylinder lock includes a key rotor that is connected to a door lock mechanism via a link and is rotated by an insertion (insertion) rotation operation of a match key (regular key) (Patent Document 1).

  The key rotor has a key insertion hole for inserting / removing a regular key and a tumbler holding hole for movably holding a key collating tumbler. The key rotor is rotatably held in the rotor case, and the end of the key insertion side is the rotor cover. Covered by.

  The rotor case is formed of a cylindrical body having an accommodation space for accommodating the key rotor. A case cover that covers the key insertion side end of the rotor case on the front side of the rotor cover is attached.

  Normally, in such a cylinder lock, the rotation of the key rotor is allowed when a regular key is inserted into the key insertion / extraction hole of the key rotor, but when a foreign object (such as a screwdriver) other than the regular key is inserted. The key rotor cannot be rotated by the action of the tumbler.

  By the way, in this type of cylinder lock, a protrusion for preventing picking is provided on the inner surface of the key insertion hole in the tumbler operation region.

Japanese Patent Laid-Open No. 5-295933

  However, according to the cylinder lock provided with the convex portion for preventing picking, foreign matters such as lint and dust adhering to the key groove of the regular key are removed by the convex portion for preventing picking when the key is inserted. As a result, foreign matter accumulates in the tumbler operation area of the key insertion / extraction hole, which may adversely affect the tumbler operation.

  Accordingly, an object of the present invention is to provide a key rotor capable of preventing foreign matter from accumulating in the tumbler operation region and thereby eliminating the possibility of adversely affecting the tumbler operation, and a cylinder lock including the key rotor. is there.

  In order to achieve the above object, the present invention provides a key rotor of (1) to (3) and a cylinder lock provided with the key rotor.

(1) A key insertion / removal hole for inserting / removing a normal key and a tumbler holding hole communicating with the key insertion / removal hole for movably holding a key collating tumbler are provided. A key rotor having a conforming convex portion for removing foreign matter, wherein the convex portion for removing foreign matter is disposed on the key insertion side of the tumbler holding hole.

(2) The key insertion / extraction hole according to the above (1) has a foreign substance reservoir that is interposed between the tumbler holding hole and the convex part for removing the foreign substance to collect foreign substances.

(3) A cylinder lock including a rotor case and a key rotor rotatably accommodated in the rotor case, wherein the key rotor is the key rotor according to (1) or (2).

  According to the present invention, it is possible to prevent foreign matter from accumulating in the tumbler operation region, and to eliminate the possibility of adversely affecting the tumbler operation.

The disassembled perspective view shown in order to demonstrate the whole cylinder lock which concerns on embodiment of this invention. Sectional drawing shown in order to demonstrate insertion rotation operation of the regular key with respect to the cylinder lock which concerns on embodiment of this invention. Sectional drawing shown in order to demonstrate insertion rotation operation of the unauthorized key with respect to the cylinder lock which concerns on embodiment of this invention. (A)-(c) is sectional drawing shown in order to demonstrate the principal part of the cylinder lock which concerns on embodiment of this invention. 1A is a sectional view taken along the line AA in FIG. 1, FIG. 1B is a sectional view taken along the line BB in FIG. 1, and FIG. 1C is a sectional view taken along the line CC in FIG.

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

(Configuration of rotor case 2)
2 and 3 show a state where the key is inserted into the cylinder lock. 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. A substantially cylinder having a mounting flange 23 projecting around the first body 20 and opening on the insertion side of the regular key K (leftward in FIG. 2) and on the opposite side (rightward in FIG. 2). Formed by the body. The rotor case 2 is attached to a vehicle door panel (not shown) via an attachment flange 23, for example.

  The rotor case 2 has a stepped surface 24 that faces the key insertion side opposite to the key insertion side (lever member side) and faces the key insertion side opening end surface (sliding surface) of the slide member 6 along the circumferential direction. Is provided.

  The stepped surface 24 is disposed between the inner peripheral surface of the first body portion 20 and the inner peripheral surface of the second body portion 21. The stepped surface 24 is provided with a pair of convex portions 25 arranged in parallel with each other at regular intervals (180 °) in the circumferential direction.

  Each circumferential end surface of the pair of convex portions 25 is formed with an inclined surface whose width direction dimension decreases from the key insertion side toward the opposite side. The front end surface of each convex portion 25 is formed as a flat surface as a support surface that slidably supports a slide surface (described later) of the slide member 6.

  A case cover 9 having a through window 9a that opens to the key insertion side end surface is provided at the key insertion side end of the rotor case 2, and a switch unit 10 is provided at the end opposite to the key insertion side end of the rotor case 2. Each is attached.

(Configuration of key rotor 3)
The key rotor 3 is accommodated in the rotor case 2 so as to be rotatable about its axis, and is entirely formed of, for example, a zinc die-cast member having a substantially cylindrical shape. The key rotor 3 is configured to rotate by an insertion rotation operation of the regular key K. In FIG. 3, the symbol B indicates an unauthorized key.

  The key rotor 3 is provided with a key insertion / removal hole 30 that opens along the axis on the end surface on the key insertion side and into which the regular key K can be inserted / removed. Details of the key insertion hole 30 will be described later. Further, the key rotor 3 is provided with a plurality of tumbler holding holes 31 that are arranged in parallel in the axial direction and open in the radial direction.

  Two tumbler holding holes adjacent to each other among the plurality of tumbler holding holes 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 a pair of convex portions 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 fitted to the key rotor retaining plate 300 on the key insertion side of the pair of convex portions 32, and the key insertion side of the pair of convex portions 32, An annular second concave groove 34 is provided on the opposite side to be fitted to the washer 301 for retaining the lever member.

  At the key insertion side end of the key rotor 3, a rotor cover 302 that covers the key insertion side end surface and a shutter member 304 that can open and close the key insertion hole 303 from the back surface (inner surface) side of the rotor cover 302 are mounted. ing.

  The shutter member 304 is given a spring force in a direction to close the key insertion hole 303 by the return spring 305.

(Configuration of the first sleeve 4)
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 entirely formed of a stepped substantially cylindrical body.

  A tumbler engagement hole 40 (shown in FIG. 1) for engaging and disengaging the plurality of tumblers 5 is provided at the key insertion side end of the first sleeve 4. A pair of guides 41 (only one of them) that are arranged in parallel at equal intervals (180 °) in the circumferential direction and guide the slide member 6 in the axial direction at the end opposite to the key insertion side end of the first sleeve 4 Is shown). 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 multiple tumblers 5)
Each of the plurality of tumblers 5 is detachably disposed in the tumbler engagement hole 40 (shown in FIG. 1) and is movably held in the tumbler holding hole 31. The plurality of tumblers 5 are given a spring force of a return spring (not shown) in a direction to engage with the first sleeve 4 (tumbler holding hole 31).

  The plurality of tumblers 5 are provided with an insertion hole (not shown) corresponding to the regular key K and a convex portion (not shown) protruding from the inner surface of the insertion hole. Thus, when the regular key K is inserted into each insertion hole of the tumbler 5 by the insertion operation into the key insertion hole 30 of the key rotor 3, the regular key K (key groove wall) is pressed against the convex portion in each insertion hole. As a result, the tumbler 5 moves in the radial direction (axis line side) of the key rotor 3 to release the engagement with the tumbler engagement hole 40, so that the key rotor 3 and the first sleeve 4 can move independently of each other. Further, when the regular key K is pulled out from each insertion hole of the tumbler 5 by the pulling operation from the key insertion hole 30 of the key rotor 3, the normal key K (key groove wall) is released from being pressed against the convex portion in each insertion hole. The tumbler 5 moves in the radial direction of the key rotor 3 (the side away from the axis) and engages with the tumbler engagement hole 40, and the key rotor 3 and the first sleeve 4 become dependent on each other and moveable.

(Configuration of slide member 6)
The slide member 6 is arranged on the key insertion side of the second sleeve 7 and is formed on the outer peripheral surface of the first sleeve 4 so as to be movable in the axial direction. Has been. The slide member 6 rotates by the rotation of the first sleeve 4 in a state where the tumbler 5 is engaged with the tumbler engagement hole 40 of the first sleeve 4, and resists the spring force of the return spring 307 in the axial direction. It is configured to move to the (lever member side) and press the second sleeve 7 to detach the second sleeve 7 from the key rotor 3 (convex portion 32). Further, the slide member 6 rotates by the rotation return of the first sleeve 4 and moves in the axial direction (on the side opposite to the lever member 8) by the spring force of the return spring 307 to release the pressing to the second sleeve 7; The second sleeve 7 is locked to the key rotor 3 (convex portion 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. A pair of concave grooves 61 (shown in FIG. 1) that are parallel to each other in the circumferential direction and are movably fitted to the respective guides 41 of the first sleeve 4 are provided on the inner peripheral portion of the slide member 6. .

  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 of the rotor case 2 (the flat surface of the convex portion 25). At the opening end of the slide member 6 on the key insertion side, the grooves 61 are parallel to each other at equal intervals (90 °) in the circumferential direction, and fitted into the convex portions 25 of the rotor case 2 (stepped surface 24). A pair of notch recesses 63 that can be mated are provided.

  The inner surface in the circumferential direction of the cut-out recess 63 moves along the inclined surface of the rotor case 2 (convex portion 25) with the cam mechanism (the slide member 6 moves away from the key rotor 3 by the rotation of the first sleeve 4). It is formed with the inclined surface which functions as a mechanism to be made.

(Configuration of the second sleeve 7)
The second sleeve 7 is disposed in the rotor case 2 so as to be rotatable and movable, and is detachably connected to the end of the key rotor 3 opposite to the key insertion side, so that the second sleeve 7 is inserted through the key rotor 3 as a whole. It is formed by a cylindrical body. The second sleeve 7 is a lever member for locking and unlocking by rotation of the first sleeve 4 (key rotor 3) in a state where the tumbler 5 is detached from the first sleeve 4 (tumbler engagement hole 40). 8 is configured to rotate. In addition, the second sleeve 7 opens the lever member side end surface of the slide member 6 by the key insertion side opening by the rotation of the first sleeve 4 in a state where the tumbler 5 is engaged with the first sleeve 4 (tumbler engagement hole 40). The slide member 6 is configured to be slidably brought into contact with the end face and to rotate (idle) together with the first sleeve 4 and the key rotor 3.

  In the key insertion side opening of the second sleeve 7, there is a key rotor connecting cutout recess 70 (shown in FIG. 1) that opens to the inner peripheral surface and the key insertion side and that can be fitted to the convex portion 32 of the key rotor 3. ) Is provided. An annular flange 71 protruding from the outer peripheral surface of the second sleeve 7 is provided at the end of the key insertion side. On the outer peripheral edge of the flange 71, a positioning cut that opens in the outer peripheral surface of the second sleeve 7 and in the axial direction and can be fitted to a convex portion (not shown) of the rotor case 2 (third body portion 22). A notch 72 (shown in FIG. 1) is provided.

  Three end portions of the second sleeve 7 opposite to the key insertion side end protrude on the opposite side of the key insertion side and transmit three rotational force transmission pieces 73 (transmitting force) to the lever member 8 ( Only two of them are shown side by side at equal intervals (120 °) in the circumferential direction.

(Configuration of lever member 8)
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 lever member 8 rotates by the rotation of the second sleeve 7 and is configured to lock and unlock a door lock mechanism (not shown) such as a vehicle via the connecting portion 83.

  A central portion of the lever member 8 has a key rotor insertion hole 80 through which an end opposite to the key insertion side end of the key rotor 3 is inserted, and a rotational force transmitting piece of the second sleeve 7 is provided around the key rotor insertion hole 80. Receiving holes 81 (only one is shown) for inserting 73 are provided.

  A pair of switch contacts 82 (only one is shown) project from the edge of the lever member 8 so as to be parallel to each other at a predetermined interval in the circumferential direction and to switch the switch unit 10 in an ON / OFF state. Yes.

  Between the bottom 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 of the rotor case 2 is arranged with respect to the sliding member 6. A return spring 307 is provided for applying a spring force in a direction to approach the stepped surface 24.

  Next, the key insertion hole 30 of the key rotor 3 will be described with reference to FIGS. 4A to 4C show a key rotor. As shown in FIG. 4A, the key insertion / extraction hole 30 of the key rotor 3 has a picking preventing projection 30a that fits the key groove k of the regular key K in the tumbler operation region. Is provided. Two protrusions 30a for preventing picking are formed on the inner surface of the key insertion / extraction hole 30 in accordance with the number of key grooves k.

  As shown in FIG. 4B, the key insertion hole 30 is provided with a convex portion 35 for removing foreign matter that fits into the key groove k of the regular key K. The protrusion 35 for removing foreign matter is on the key insertion side of the tumbler holding hole 31 (shown in FIG. 1), that is, the tumbler operation area, and is substantially the same as the height position of the protrusion 30a for picking prevention with respect to the key rotor 3. It is arranged at the height position. As a result, the foreign matter adhering to the key groove k of the regular key K is removed on the insertion side of the tumbler operation area by the convex portion 35 for removing the foreign matter. Two foreign matter removing convex portions 35 are formed on the inner surface of the key insertion hole 30 in accordance with the number of key grooves k, in the same manner as the number of convex portions 30a for preventing picking.

  Further, as shown in FIG. 4C, a plurality of key insertion holes 30 are provided between the tumbler holding hole 31 and the foreign matter removing convex portion 35 to collect foreign matters in the key rotor 3 (embodiment). , Two) foreign substance reservoirs 36 are provided. Accordingly, the foreign matter removed by the foreign matter removing convex portion 35 when the regular key K is inserted into the key insertion / extraction hole 30 is accumulated in the foreign matter reservoir 36 on the insertion side of the tumbler operation region.

[Operation of cylinder lock 1]
Next, the operation of the cylinder lock according to the embodiment of the present invention will be described with reference to FIGS.

  In order to switch the door lock mechanism (not shown) from the locked state to the unlocked state, the regular 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 regular key K is inserted into the key insertion / extraction hole 30 of the key rotor 3, the tumbler 5 is released from the engagement state of the first sleeve 4 with the tumbler engagement hole 40 in the radial direction of the key rotor 3. And the key rotor 3 can be rotated independently of the first sleeve 4.

  Next, the regular key K is rotated in a direction to release the locked state of the door lock mechanism. In this case, when the regular key K rotates, this rotational 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, in the locked state of the door lock mechanism, for example, an unauthorized key B or a drill is inserted into the key insertion / extraction hole 30 of the key rotor 3, and when the key rotor 3 is rotated by the unauthorized key B or the like in this state, the tumbler 5 is moved to the first sleeve. Since the engagement state with respect to the tumbler engagement hole 4 remains maintained, the first sleeve 4 is rotated together with the key rotor 3.

  In this case, when the first sleeve 4 rotates, the slide member 6 rotates together with the first sleeve 4, so that the notch concave portion 63 of the slide member 6 is protruded from the fitted state with respect to the convex portion 25 of the rotor case 2. Displacement is made in the circumferential direction toward the disengaged position where the fitting to the portion 25 is released, and the inclined surface of the notched concave portion 63 is accordingly projected on the inclined surface of the rotor case 2 (convex portion 25). Displacement toward the flat surface (tip surface). Thereby, the slide member 6 moves along the guide 41 (against the spring force of the return spring 307) in the direction away from the stepped surface 24 of the rotor case 2 along the guide 41, The second sleeve 7 is pressed against the lever member (in the direction of separating from the key rotor 3).

  Next, when the second sleeve 7 receives a pressing force from the slide member 6 toward the lever member, the second sleeve 7 moves in the pressing direction (key insertion direction) to move the convex portion 32 of the key rotor 3 and the notched concave portion 70 of the second sleeve 7. And the fitting state is released.

  Then, when the sliding surface 62 of the slide member 6 rides on the tip surface of the rotor case 2 (convex portion 25) and the first sleeve 4 rotates with respect to the rotor case 2 in this state, the slide member 6 moves to the sliding surface. 62 is slidably contacted with the front end surface of the rotor case 2 (convex portion 25) and rotates with the first sleeve 4 relative to the second sleeve 7 (lever member 8). Thereby, since the lever member 8 is not rotated, the door lock mechanism is not locked or unlocked. In this case, since the key rotor 3 rotates together with the first sleeve 4, an overload is not applied to the tumbler 5 due to the rotation of the unauthorized key B or the like, and deformation (destruction) of the tumbler 5 is prevented.

  On the other hand, in order to switch the door lock mechanism (not shown) from the unlocked state to the locked state, the regular key K is inserted into 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 regular key K is inserted into the key insertion / extraction hole 30 of the key rotor 3, the tumbler 5 is released from the engagement state of the first sleeve 4 with the tumbler engagement hole 40 in the radial direction of the key rotor 3. And the key rotor 3 can be rotated independently of the first sleeve 4.

  Next, the regular key K is rotated in the direction to lock the door lock mechanism. In this case, when the regular key K rotates, this rotational 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) Foreign matter adhering to the key groove k of the regular key K is removed on the insertion side of the tumbler operation area by the convex portion 35 for removing foreign matter. Thereby, the accumulation of foreign matters in the tumbler operation region can be prevented, and the possibility of adversely affecting the tumbler operation can be eliminated.

(2) The foreign matter removed by the foreign matter removing projection 35 when the regular key K is inserted into the key insertion / extraction hole 30 is collected by the foreign matter reservoir 36 on the insertion side of the tumbler operation region, and the foreign matter reaches the tumbler operation region. Can be suppressed.

  As mentioned above, although the key rotor of this invention and the cylinder lock provided with this were demonstrated based on said embodiment, this invention is not limited to said embodiment, In the range which does not deviate from the summary, For example, the following modifications are possible.

  In the above embodiment, the case where there are two foreign matter reservoirs 36 has been described. However, if the foreign matter reservoirs 36 are disposed between the tumbler holding holes 31 and the convex portions 35 for removing foreign matters, the number of foreign matter reservoirs 36 is particularly large. It is not limited.

  Moreover, although the case where it applied to the door lock mechanism in the door panel for motor vehicles was demonstrated in the said embodiment, this invention is not limited to this, You may apply to the door lock mechanism in another door panel, and a door lock The present invention can also be applied to a lock mechanism other than the mechanism as in the above embodiment.

  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, 3 ... Key rotor, 30 ... key insertion / extraction hole, 30a ... convex portion for preventing picking, 31 ... tumbler holding hole, 32 ... convex portion for connecting sleeve, 33 ... first concave groove, 34 ... second concave groove, 35 ... foreign matter removal Convex part 36 ... foreign material reservoir 4 ... first sleeve 40 ... tumbler engagement hole 41 ... guide 42 ... plate insertion hole 5 ... tumbler 6 ... slide member 60 ... key rotor insertion hole 61 ... Recessed groove 62... Sliding surface 63. Notched recess 7. Second sleeve 70. Notched recessed portion 71. Flange 72. Notched 73. Rotary force transmitting piece 8. Lever member 80. Key rotor insertion hole, 81 ... receiving hole, 82 ... switch contact, 83 ... Connection part, 9 ... Case cover, 9a ... Through window, 10 ... Switch unit, 300 ... Key rotor retaining plate, 301 ... Lever member retaining washer, 302 ... Rotor cover, 303 ... Key insertion hole, 304 ... Shutter member, 305, 307 ... return spring, K ... regular key, k ... key groove, B ... illegal key

Claims (3)

A key insertion / extraction hole for inserting / removing a regular key, and a tumbler holding hole communicating with the key insertion / extraction hole for holding a key collating tumbler movably,
The key insertion / extraction hole has a protrusion for removing foreign matter that fits into a key groove of a regular key, and the protrusion for removing foreign matter is arranged on the key insertion side of the tumbler holding hole.   2. The key rotor according to claim 1, wherein the key insertion / extraction hole has a foreign substance reservoir that is interposed between the tumbler holding hole and the convex part for removing the foreign substance to collect foreign substances. A rotor case,
In a cylinder lock provided with a key rotor rotatably accommodated in the rotor case,
The key rotor is the key rotor according to claim 1 or 2. A cylinder lock.

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