JP2017206813A - Cylinder lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder lock device that enhances assembly work efficiency.SOLUTION: A cylinder lock device 1 includes a rotor 30 housed and held rotatably in a cylindrical body 2, a sleeve 5 housed and held rotatably between the body 2 and the rotor 30, a slide member 6 that moves when the rotor 30 and the sleeve 5 are rotated integrally with regard to the body 2, an engaging protrusion 37 formed on an outer peripheral surface of the rotor 30, the engaging protrusion engaging with a clutch member 8 for transmitting rotation of the rotor 30, and a protrusion 60 formed on the slide member 6. The cylinder lock device further includes a ring-form plate 7 slid along the protrusion 60 of the slide member 6 and engaged between an inner surface of the protrusion 60 and the outer peripheral surface of the rotor 30, the ring-form plate blocking pull-out of the rotor 30 when the rotor is pulled out from a front side of the body 2, by bringing the engaging protrusion 37 in contact therewith.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cylinder lock device that is locked and unlocked by rotating a mechanical key.

  As an example of a conventional cylinder lock device, a pin tumbler lock is proposed in which rotation of an inner cylinder and an outer cylinder is regulated by a pin tumbler (see, for example, Patent Document 1).

  The pin tumbler lock described in Patent Document 1 includes a lock main body in which an inner cylinder and an outer cylinder are assembled, and a connecting cam fixed with screws at the inner end of the inner cylinder. The lock body to which the connecting cam is fastened with screws is inserted into the case body in the axial direction from the front side, and a retaining pin that prevents the lock body from falling off is perpendicular to the outer periphery of the case body. It is assembled and engaged with the connecting cam.

JP 10-88874 A

  The pin tumbler lock described in Patent Document 1 has a structure in which a retaining pin is inserted from a direction perpendicular to the insertion direction of the lock body in order to prevent the lock body from falling off. Because of this structure, the lock body and the retaining pin are assembled into the case body from two different directions, so that there is a problem that assembly of the pin tumbler lock takes time and man-hours and the work efficiency is poor.

  Accordingly, an object of the present invention is to provide a cylinder lock device capable of improving the work efficiency of assembly.

  In order to achieve the above object, the cylinder locking device provided by the present invention accommodates a tumbler that is urged in a radial direction across the key insertion hole, and rotates in a cylindrical body that opens back and forth. A rotor that can be accommodated and held, and a sleeve that is rotatably accommodated and held between the body and the rotor, and that releases the engagement with the tumbler by inserting a regular key into the key insertion hole, and A slide member that is disposed between the body and the sleeve and moves to the rear side of the body when the rotor and the sleeve are rotated together with the body; and a clutch member that transmits the rotation of the rotor. A mating engagement protrusion is formed on the outer peripheral surface of the rotor and a protrusion is formed on the slide member. The protrusion is slid along the protrusion and the inner surface of the protrusion and the protrusion A ring-shaped plate that is engaged between the outer peripheral surfaces of the rotor and that prevents the pulling out when the engaging protrusion abuts when the rotor is pulled out from the front side of the body. To do.

  In the cylinder lock device according to the present invention, the protrusion of the slide member has an inclined surface that is gradually inclined upward, and the outer peripheral edge of the ring-shaped plate is slid along the inclined surface of the protrusion. It is preferable to be engaged with the inner surface.

  Furthermore, in the cylinder lock device according to the present invention, the ring-shaped plate has an engagement surface that engages with the inner surface of the protrusion, and an insertion hole that is inserted into the rotor. It is preferable that an insertion hole that is inserted through the engagement protrusion of the rotor is formed on the circumference.

  Furthermore, in the cylinder lock device according to the present invention, the ring-shaped plate is configured to release the engagement between the rotor and the clutch member by moving while being sandwiched between the slide member and the clutch member. It is suitable to have.

  Furthermore, in the cylinder lock device according to the present invention, it is preferable that the clutch member has an engagement recess that is movable and non-rotatably engaged with the engagement protrusion of the rotor.

  ADVANTAGE OF THE INVENTION According to this invention, the assembly property of a cylinder lock apparatus can be improved.

It is a perspective view which shows typically the disassembled state before assembling the cylinder lock apparatus which concerns on suitable embodiment for this invention. It is a perspective view which shows typically the external appearance after assembling a cylinder lock apparatus. It is a principal part cross-sectional enlarged view of the III-III line arrow of FIG. It is explanatory drawing (a)-(e) for demonstrating an example of the assembly procedure of a cylinder lock apparatus. It is the top view (a) seen from the side surface direction of FIG.4 (c), and the top view (b) seen from the side surface direction of FIG.4 (d).

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In the following description, the key insertion hole side of the cylinder lock device is referred to as a front portion, the rear side of the key insertion hole is referred to as a rear portion, and the key insertion hole is referred to as up, down, left, and right when viewed from the front.

(Overall configuration of cylinder lock device)
1 and 2, reference numeral 1 indicating the whole exemplifies a configuration example of a typical cylinder lock device in the present embodiment. The cylinder lock device 1 includes a body 2 that is assembled to a trunk lid of a vehicle body (not shown).

  The body 2 includes a cylindrical portion 20 for housing the internal components of the cylinder lock device 1 and a mounting flange portion 21 that is integrally formed near the front opening of the cylindrical portion 20. As a constituent material of the body 2, for example, a cylindrical metal material that opens in the front-rear direction, such as zinc die casting, is used.

  In the cylindrical portion 20 of the body 2, a regular mechanical key (not shown) (hereinafter referred to as a regular key) and a rotor unit 3 capable of mechanical authentication are inserted and held through the front opening. On the other hand, a freewheel mechanism 4 having a clutch function for switching the rotor unit 3 and a lock mechanism (not shown) between a connected state and a disconnected state is inserted and received and held from the rear opening on the opposite side of the front opening of the body 2. The The lock mechanism includes lock parts such as a coil spring and a lever.

  As shown in FIGS. 1 and 3, the rotor unit 3 includes a columnar rotor 30 that is rotatably accommodated in the cylindrical portion 20 of the body 2. The rotor 30 has a stepped shape in which a large-diameter rotor portion 33 and a small-diameter rotor portion 34 are integrally connected via a stepped portion 35. An annular front partition wall 22 bulges on the inner peripheral surface of the front portion of the body 2, and a stepped portion 35 of the rotor 30 is brought into contact with the front surface of the front partition wall 22. It is prevented from coming out from the opening side.

  Inside the large-diameter rotor portion 33 and the small-diameter rotor portion 34, a key insertion hole 32 for inserting a regular key is formed along the rotation axis CL direction. Inside the small-diameter rotor portion 34, a plurality of long tumblers 31,..., 31 that are urged in the radial direction across the key insertion hole 32 are accommodated so as to be able to advance and retract in the radial direction by the elasticity of a coil spring (not shown). Has been. By inserting the regular key into the key insertion hole 32, the tumbler 31 is immersed in the small diameter rotor portion 34, and the rotor unit 3 can be rotated into the cylindrical portion 20 of the body 2.

  A small-diameter portion 36 is integrally connected to the rear end portion of the small-diameter rotor portion 34 via an annular stepped portion toward the radial center. The small-diameter portion 36 includes a first small-diameter portion 36a and a second small-diameter portion 36b via a connecting portion 36c having a smaller diameter than the small-diameter portion 36. A ring-shaped plate 7 is disposed on the connecting portion 36c. The second small-diameter portion 36b is formed with a pair of step-like engagement protrusions 37, 37 for switching the connection state with the freewheel mechanism 4 to the connection release state so as to protrude in both radial directions. A cylindrical clutch member 8 is movably fitted to the protrusion 37 so as to be movable.

  A cylindrical sleeve 5 is rotatably accommodated in a space formed between the inner peripheral surface of the cylindrical portion 20 of the body 2 and the outer peripheral surface of the small diameter rotor portion 34. The front opening end surface of the sleeve 5 abuts against the rear surface of the front partition wall 22 of the body 2, thereby preventing the sleeve 5 from being pulled out from the front opening of the body 2.

  On the inner peripheral surface of the sleeve 5, tumbler engaging portions (not shown) that are long in the direction of the rotation axis CL are formed on both radial sides. The tumbler engaging portion constitutes a hole for releasing the protruding end portion of the tumbler 31 by inserting the regular key, and the engagement with the tumbler 31 is maintained by inserting the regular key into the key insertion hole 32. At the same time, the engagement with the tumbler 31 is maintained by removing the regular key.

  A pair of T-shaped sliding grooves 50, 50 extending in the direction of the rotation axis CL and in the circumferential direction are formed on both sides in the radial direction on the outer peripheral surface of the sleeve 5. A pair of slide members (slide bars) 6 and 6 are slidably fitted.

  A cam surface (not shown) is formed on the facing surface where the slide member 6 and the slide groove 50 face each other, and the slide member 6 rotates relative to the body 2 so that the slide member 6 is a cylinder of the body 2. It moves toward the lock mechanism along a space formed between the inner peripheral surface of the portion 20 and the sliding groove 50 of the sleeve 5.

(Configuration of rotor pull-out prevention structure)
In the present embodiment, a rotor pull-out prevention structure that is a characteristic portion is provided. As shown in FIGS. 1 and 3, a projecting portion 60 for attaching the ring-shaped plate 7 is formed on the rear end surface that is the front end portion in the moving direction of the slide member 6. An inclined surface 61 that is gradually inclined upward toward the radially outer side of the sleeve 5 is formed at the tip corner of the protrusion 60.

  On the other hand, on a part of the outer peripheral surface of the ring-shaped plate 7, engagement surfaces 72 chamfered in a flat shape to be engaged with the inner surface of the protrusion 60 of the slide member 6 are formed on both radial sides. A circular insertion hole 70 disposed in the coupling portion 36 c of the rotor 30 is formed at the center of the ring-shaped plate 7, and the second small diameter of the rotor 30 is formed on the circumference of the inner diameter surface of the insertion hole 70. Insertion holes 71, 71 that pass through the engagement protrusion 37 of the portion 36 b are formed on both sides in the radial direction with a phase difference of 90 ° from the engagement surface 72.

  In the ring-shaped plate 7, the insertion hole 70 is inserted into the small-diameter portion 36 of the rotor 30 from the rear opening of the body 2, and the edge of the engagement surface 72 is slid along the inclined surface 61 of the protrusion 60 of the slide member 6. By doing so, the engagement surface 72 is engaged and held between the inner surface of the protrusion 60 and the connecting portion 36 c of the rotor 30. In this engaged and held state, the center of the insertion hole 70 of the ring-shaped plate 7 is disposed at a position eccentric from the rotation axis CL of the rotor 30 by a distance D.

  By maintaining the state in which the engagement surface 72 of the ring-shaped plate 7 is engaged and held between the inner surface of the protrusion 60 of the slide member 6 and the connecting portion 36c of the rotor 30, the radial play of the ring-shaped plate 7 is eliminated. You can reduce the date. By causing the ring-shaped plate 7 to come into contact with the clutch member 8 that is biased toward the side opposite to the lock mechanism side, the play of the ring-shaped plate 7 in the rotation axis direction CL can be suppressed.

  The ring-shaped plate 7 configured as described above is configured as a stopper member for preventing the rotor from being pulled out. When the rotor 30 is pulled out from the front opening side of the body 2, the engagement protrusion 37 of the rotor 30 comes into contact with the ring-shaped plate 7.

  Coupled with the fact that the front opening end surface of the sleeve 5 abuts against the rear surface of the front partition wall 22 of the body 2 and the sleeve 5 is prevented from being pulled out of the front opening of the body 2, the ring-shaped plate 7 and the rotor 30. Due to the contact with the engaging projection 37, the rotor 30 can be prevented from being pulled out from the front opening side of the body 2.

(Configuration of freewheel mechanism)
As shown in FIGS. 1 and 3, the freewheel mechanism 4 includes a cylindrical sleeve 5 that is rotatably accommodated between an inner peripheral surface of the cylindrical portion 20 of the body 2 and an outer peripheral surface of the small-diameter rotor portion 34. A pair of T-shaped slide members 6, 6 that are movable along the rotation axis CL direction on the outer peripheral surface of the sleeve 5, a ring-shaped plate 7 that is movable to the connecting portion 36 c of the rotor 30, and a second of the rotor 30. The cylindrical clutch member 8 is movable to the small diameter portion 36b.

  On the circumference of the inner diameter surface of the front opening in the clutch member 8, detachable recesses 80, 80 that can be engaged with and disengaged from the engagement protrusion 37 of the rotor 30 are formed on both sides in the radial direction. The detachable recess 80 has a staircase shape having a step that is stepped down by a required height from the inner diameter surface of the insertion hole 81 that can be inserted into the second small diameter portion 36 b of the rotor 30.

  The clutch member 8 is biased toward the front opening portion of the rotor 30 by a coil spring having a function of biasing toward the opposite side of the lock mechanism and a function of biasing in the rotational direction. The attachment / detachment recess 80 of the clutch member 8 is pressed into contact with the engagement protrusion 37 of the rotor 30 and is fitted and attached.

  An annular rear partition wall 23 having a larger inner diameter than the front partition wall 22 is formed on the rear inner peripheral surface of the body 2, and a flange portion 82 formed on the outer peripheral surface of the clutch member 8 by the elasticity of the coil spring is provided. By contacting the rear surface of the rear partition wall 23, the clutch member 8 is prevented from coming out of the front opening side of the body 2.

  In the locked state where the regular key is not inserted into the key insertion hole 32 of the rotor 30, an unauthorized key other than the regular key or a foreign object such as a driver is inserted into the key insertion hole 32 of the rotor 30 to unlock the cylinder lock. When the illegal act is performed, the rotation of the rotor 30 is restricted by engaging the protruding end portion of the tumbler 31 with the tumbler engaging portion of the sleeve 5.

  When the rotor 30 is forcibly rotated, the sleeve 5 is rotated with respect to the body 2 so that the slide member 6 is directed toward the lock mechanism along the sliding groove 50 of the sleeve 5 against the elasticity of the coil spring. While moving, the ring-shaped plate 7 is sandwiched between the slide member 6 and the clutch member 8 and moved.

  As described above, in addition to the function as a stopper member for preventing the rotor from being pulled out, the ring-shaped plate 7 is sandwiched and moved between the slide member 6 and the clutch member 8 to move the rotor unit 3 and the clutch member 8. It is possible to have a function of releasing the engagement. With this configuration, it is possible to release the fitted state between the detachable recess 80 of the clutch member 8 and the engagement protrusion 37 of the rotor 30, and prohibit the integral rotation of the rotor unit 3 and the clutch member 8. Is possible.

  By the free wheel mechanism 4 configured as described above, the rotor 30 and the sleeve 5 are merely idled with respect to the body 2, and the rotation of the rotor 30 is not transmitted to the clutch member 8, and the lock mechanism does not operate. A clutch function having a connection release function for releasing the engagement between the rotor 30 and the clutch member 8 and causing the rotor 30 to idle with respect to the lock mechanism can be achieved with a simple configuration.

  On the other hand, when the regular key is inserted into the key insertion hole 32 of the rotor 30, all the tumblers 31 are retracted inward from the tumbler engaging portion of the sleeve 5 by engaging with the key groove of the regular key. All the tumblers 31 and the sleeves 5 are disengaged, and the rotor 30 can rotate independently of the sleeves 5.

  When the normal key is rotated in this state, the engagement protrusion 37 of the rotor 30 and the detachment recess 80 of the clutch member 8 are maintained in the engaged state, and the sleeve 5, the slide member 6, and the ring Except for the plate-like plate 7, only the clutch member 8 engaged with the rotor 30 rotates integrally. The rotation of the clutch member 8 switches between a locked state and an unlocked state of the lock mechanism.

(Assembly procedure of cylinder lock device)
Here, referring to FIGS. 4 (a) to 4 (e) and FIGS. 5 (a) and 5 (b), the rotor unit 3 and the freewheel mechanism 4 are shown in the body 2. An example of the assembly process is illustrated.

  Hereinafter, an example of the assembly procedure of the cylinder lock device 1 will be described with reference to FIGS. 3, 4 (a) to 4 (e), and FIGS. 5 (a) and 5 (b). In addition, illustration of the body 2 is abbreviate | omitted from Fig.4 (a) to FIG.4 (e).

  In order to assemble the rotor unit 3 and the free wheel mechanism 4 in the cylindrical portion 20 of the body 2, as shown in FIG. 3, first, the rotor unit 3 is moved from the front opening of the body 2 into the cylindrical portion 20 of the body 2. The step portion 35 of the rotor 30 is engaged with the front partition 22 of the body 2.

  Next, as shown in FIGS. 3, 4 (a) and 4 (b), the sleeve 5 is inserted into the cylindrical portion 20 of the body 2 from the rear opening of the body 2, and the front opening end surface of the sleeve 5 is moved. The body 2 is brought into contact with the front partition 22. Subsequently, the slide member 6 is fitted into the slide groove 50 of the sleeve 5.

  Next, as shown in FIGS. 3, 4 (c) and 5 (a), the insertion hole 70 of the ring-shaped plate 7 is inserted into the second small diameter portion 36 b of the rotor unit 3 from the rear opening of the body 2. At the same time, the insertion hole 71 of the ring-shaped plate 7 is inserted into the engagement protrusion 37 of the second small diameter portion 36b. After the insertion hole 71 of the ring-shaped plate 7 is inserted into the engagement protrusion 37, the insertion hole 70 of the ring-shaped plate 7 is set in the connecting portion 36 c of the rotor unit 3.

  Next, as shown in FIGS. 3, 4 (d) and 5 (b), the edge of the engagement surface 72 of the ring-shaped plate 7 is slid along the inclined surface 61 of the protrusion 60 of the slide member 6. As a result, the engaging surface 72 is engaged and held between the inner surface of the protrusion 60 and the connecting portion 36 c of the rotor 30. The center of the insertion hole 70 of the ring-shaped plate 7 is positioned at a position shifted in the radial direction from the rotation axis CL of the rotor 30 by the distance D, and the ring-shaped plate 7 is assembled as a stopper member for preventing the rotor from being pulled out.

  Finally, as shown in FIG. 3 and FIG. 4 (e), the flange portion 82 of the clutch member 8 is attached to the body 2 by fitting the attachment / detachment recess 80 of the clutch member 8 to the engagement protrusion 37 of the rotor unit 3. It abuts on the rear partition wall 23. The ring-shaped plate 7 is brought into contact with the clutch member 8 to suppress the play of the ring-shaped plate 7 in the rotation axis direction CL. With the above operation, the assembly operation of the rotor unit 3 and the free wheel mechanism 4 to the body 2 is completed.

(Effect of embodiment)
According to the cylinder lock device 1 configured as described above, the ring-shaped plate 7 for preventing the rotor from being pulled out is assembled in the body 2 along the rotation axis CL in the same direction as the assembly direction of the other internal components. Therefore, in addition to the above effects, the following effects can be obtained.

  The assembly man-hour can be reduced by assembling the ring-shaped plate 7 from the direction of the rotation axis CL.

  Since the hole shape for tightening the ring-shaped plate 7 can be eliminated, the simplification of the shape and the reduction of the processing man-hour can be achieved.

  Since the hole shape for tightening the ring-shaped plate 7 can be eliminated, there is no need for secondary processing, and the manufacturing cost can be reduced.

  Since it has a simple structure, it can be easily assembled and can be automated by an automatic robot.

  With a simple structure for preventing the rotor unit 3 from being pulled out by an unauthorized act, it is possible to prevent an unlocking operation due to an unauthorized destruction operation, and to improve the attack resistance.

  Since the ring-shaped plate 7 for preventing the pulling out of the rotor can be used as a component of the freewheel mechanism 4, it is possible to reduce the arrangement space of the housing components in the body 2 without increasing the manufacturing cost. can do.

  In addition, although the case where it applied to a motor vehicle was demonstrated in the typical structural example of the cylinder lock apparatus 1 in this invention, this invention is not limited to this. As long as the ring-shaped plate 7 for preventing the rotor pull-out can be assembled in the body 2 along the rotation axis CL in the same direction as the assembly direction of the other internal components, various types such as construction machines and agricultural machines can be used. Of course, the present invention can be effectively applied to the working vehicle.

  Moreover, in the said embodiment, although the ring-shaped plate 7 for rotor extraction prevention applied to the cylinder locking device 1 which locks and unlocks the trunk lid of a vehicle by mechanical operation was illustrated, It is not limited. As another example, it is needless to say that the structure for preventing the rotor from being pulled out by the ring-shaped plate 7 can be applied to, for example, a cylinder lock device for an ignition cylinder of a vehicle, a door of a vehicle, a door of a house, and other opening / closing bodies.

  As is clear from the above description, the representative embodiments and the illustrated examples according to the present invention do not limit the invention according to the claims. Therefore, it should be noted that not all the combinations of features described in the above embodiments and the illustrated examples are essential to the means for solving the problems of the invention.

DESCRIPTION OF SYMBOLS 1 ... Cylinder locking device, 2 ... Body, 3 ... Rotor unit, 4 ... Free wheel mechanism, 5 ... Sleeve, 6 ... Slide member, 7 ... Ring-shaped plate, 8 ... Clutch member, 20 ... Cylindrical part, 21, 82 ... Mounting flange portion, 22: front partition, 23 ... rear partition, 30 ... rotor, 31 ... tumbler, 32 ... key insertion hole, 33 ... large diameter rotor portion, 34 ... small diameter rotor portion, 35 ... stepped portion, 36 ... small diameter Part 36a ... first small diameter part 36b ... second small diameter part 36c ... connection part 37 ... engagement protrusion 50 ... sliding groove 60 ... protrusion 61 ... inclined surface 70, 81 ... insertion hole 71 ... Insertion hole, 72 ... Engagement surface, 80 ... Desorption recess, CL ... Rotation axis, D ... Distance

Claims (5)

A rotor that is housed in a tubular body that is urged in a radial direction across the key insertion hole and that can be moved forward and backward, and that is rotatably housed in a cylindrical body that opens back and forth;
A sleeve that is rotatably housed and held between the body and the rotor, and releases the engagement with the tumbler by inserting a regular key into the key insertion hole;
A slide member that is disposed between the body and the sleeve and moves to the rear side of the body when the rotor and the sleeve are rotated integrally with the body;
An engagement protrusion that engages with a clutch member that transmits the rotation of the rotor is formed on the outer peripheral surface of the rotor, and a protrusion is formed on the slide member. A ring-shaped plate that is engaged between the inner surface of the protrusion and the outer peripheral surface of the rotor, and the engagement protrusion abuts when the rotor is pulled out from the front side of the body;
A cylinder locking device comprising:   The projecting portion of the slide member has an inclined surface that is gradually inclined upward, and the outer peripheral edge of the ring-shaped plate is slid along the inclined surface to engage the inner surface of the projecting portion. The cylinder lock device according to 1. The ring-shaped plate has an engagement surface that engages with the inner surface of the protrusion, and an insertion hole that is inserted into the rotor.
The cylinder lock device according to claim 1 or 2, wherein an insertion hole is formed on a circumference of an inner diameter surface of the insertion hole so as to be inserted into the engagement protrusion of the rotor.   The ring-shaped plate has a configuration in which the engagement between the rotor and the clutch member is released by being sandwiched and moved between the slide member and the clutch member. The cylinder lock device according to item 1.   5. The cylinder lock device according to claim 1, wherein the clutch member includes an engaging recess that is movable and non-rotatably engaged with the engaging protrusion of the rotor.

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