JP5921470B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device, for example, a locking device used for locking an openable door or a lid.

  The locking device disclosed in Patent Document 1 includes a housing including a lock unit and a cap that is pivotably attached to the housing. By closing the cap, a key hole in which a key is inserted is formed on the front surface of the housing. The entire locking surface is covered.

JP 2002-309811 A

  According to the locking device with a cap disclosed in Patent Document 1, it is possible to prevent dust from entering the keyhole by covering the keyhole with the cap. However, when the operator performs the unlocking / locking operation, the cap cannot be held in its predetermined position while the cap is pivoted upward to expose the keyhole, and the cap pivots downward due to its own weight or slight impact. Therefore, it is necessary to hold it with one hand, and the unlocking / locking operation cannot be performed smoothly. In order to eliminate such disadvantages, the cap can be attracted and attached to the front surface of the locking device using a compression spring or the like, but a configuration and members for that purpose are required.

  An object of the present invention is to provide a locking device including means capable of regulating the turning of a cap using a member that moves by an unlocking operation of a lock unit.

  In order to solve the above problems, the present invention relates to a locking device including a housing having a vertical direction and having a lock unit, and a cap pivotably attached to the housing.

In the locking device according to the present invention, the cap includes a base end portion fixed to the housing via a shaft, and a bent portion extending from the base end portion and extending in front of the shaft and positioned on the front surface of the housing. A covering portion that covers the keyhole, and the base end portion includes a locked portion and a plurality of engaging recesses that are spaced apart from each other in the circumferential direction on the outer peripheral surface thereof, and the lock unit includes: A cam mechanism that converts a rotational motion of a cam that rotates in conjunction with an unlocking operation into a linear motion in the vertical direction of a slide member coupled thereto; and the slide member includes a receiving portion coupled to the cam; A locking portion extending upward from the receiving portion, and the housing has a spherical body that is spring-biased in a direction intersecting the front surface of the housing so as to face the base end portion. The sphere engages in the locked state. The engaging portion of the slide member which is engaged with the engaging portion and is engaged with the engaging recess portion of the cap in a state where the spherical body of the housing is swung upward during the unlocking operation. Is locked to the to-be-latched portion of the cap, whereby the downward turning of the cap is restricted .

  In one of preferred embodiments of the present invention, the housing has a groove part in which the lower end of the slide member can enter and retreat, and the unlocking operation of the lock unit is restricted by the lower end being positioned in the groove part. The

  In one preferred embodiment of the present invention, the housing has indicator means that is located on an outer periphery of the keyhole and is covered with the covering portion in a state where the cap is closed.

  In one preferred embodiment of the present invention, the indicator means is formed from a fluorescent paint.

  According to the locking device of the present invention, the rotational motion of the cam that rotates in conjunction with the unlocking operation of the lock unit is converted into the linear motion in the vertical direction of the slide member connected thereto, and the slide member that has moved upward is converted. Since a part of the cap is locked by the locked portion at the base end of the cap in a state where the cap is pivoted upward, the cap does not pivot downward due to its own weight or the like in the unlocked state. Therefore, the locking / unlocking operation can be smoothly performed without using a spring member or the like to maintain the turning state of the cap or the operator does not press the cap.

The partially broken perspective view which shows the state which the cap at the time of locking closed in the use condition of a locking device. The partially broken perspective view which shows the state which the cap at the time of unlocking opened in the use condition of a locking device. Sectional drawing which follows the III-III line of FIG. Sectional drawing which follows the IV-IV line | wire of FIG. The disassembled perspective view of a locking device. The perspective view which looked at the housing of the handle body from the back. The perspective view of a cam mechanism. The perspective view of a cap. (A) The figure at the time of unlocking of a 2nd cap control means, (b) The figure at the time of locking of a 2nd cap control means. (A) The perspective view of a flange, (b) The front view of a flange. Sectional drawing similar to FIG. 3 which shows an example of the example of a change of a locking device.

  Referring to FIGS. 1 and 2, the locking device 10 is for opening and closing the door 12 with respect to the fixed frame 11, and has a vertical direction Y, a width direction X and a front-back direction Z orthogonal to the vertical direction Y, A handle main body (locking main body) 13 and a cap 15 pivotably attached to the handle main body 13 via a pin 14 are included. The handle body 13 includes a housing 17 having a lock unit 16 and a flange 18 connected to the rear surface of the housing 17. In the present embodiment, the housing 17 and the flange 18 are separate bodies, but may be integrally formed as long as the effects of the present invention described later can be obtained.

<Housing>
Referring to FIGS. 5 and 6, the housing 17 includes a gripping portion 21 that pivots about an axis P, an opening 19 in the center of the front surface, and a base portion 22 in which the lock unit 16 is housed in an internal space. And an extending portion 23 extending rearward from the center of the base portion 22. The base portion 22 protrudes upward and opposes the width direction X, and an upper end portion 22b having a pair of attachment pieces 22a through which a pin 14 is inserted in the center and an opening (spring chamber) 30 into which a spring 29 is inserted. And have. The extending portion 23 has a large-diameter portion 23a extending rearward from the base portion 22 and a small-diameter portion 23b extending rearward from the large-diameter portion 23a, and a rectangular shape to which a latch plate 26 is attached at the rear end of the small-diameter portion 23b. The protrusion 23c is located. A slot 31 for fitting a slide member, which will be described later, is provided at a separation portion located between the attachment pieces 22a of the base portion 22 and a base end of the extension portion 23. Further, the claw portion 32 disposed in the groove portion 58 of the flange 18 described later is located on the lower surface of the base end of the extending portion 23.

  Referring to FIGS. 1 and 2, a locking surface 25 a of a cylinder portion 25 having a key hole 24 into which the key 20 is inserted is disposed in the opening in the front surface of the base portion 22, and the key 20 is inserted into the key hole 24. When rotated in the direction, the lock of the lock unit 16 is released. After unlocking, the operator turns the gripping portion 21 in the R direction, so that the latch plate 26 located inside the door 12 turns in the same direction and the folding portion 12a of the door 12 and the front-rear direction Z In this case, the door 12 is separated from the bent part 11a of the opposing fixed frame 11, and the door 12 is unlocked. Indicator means 27 formed by applying a colored sealing material or applying a colorant such as ink or fluorescent paint is disposed on a portion of the base 22 excluding the front opening. Since the indicator means 27 is provided in a relatively wide range on the front surface of the base portion 22, it is more conspicuous than when the indicator means 27 is disposed on a display window provided on the locking surface 25 a or a part thereof, In a state where the cap 15 pivots upward and the keyhole 24 is exposed, the operator can easily discriminate between locking and unlocking. In particular, when a fluorescent paint is used as the indicator means 27, the unlocking of the locking device 10 can be easily confirmed even at night.

<Lock unit>
The lock unit 16 is housed in the internal space of the base portion 22 of the housing 17 and is fixed to the inner surface of the lower end of the base portion 22 via a set screw (not shown). It has a cylinder part 25 which is located on P and rotates in the rotation direction of the key 20, and a cam mechanism 36 connected to the cylinder part 25. The cylinder portion 25 is connected to a locking surface 25a, a cylindrical portion 37 extending rearward from the locking surface 25a, and a cam mechanism 36 protruding from the rear of the cylindrical portion 37 to rotate the cylinder portion 25. And a fitting portion 38 for transmitting to the head. The cylindrical portion 37 of the cylinder portion 25 has a double structure, and an inner cylinder portion connected to the locking surface 25a and the fitting portion 38 is rotatably disposed on the inner surface, while forming an outer surface of the cylindrical portion 37. The outer cylinder portion to be fixed to the case 34 is non-rotatable.

<Cam mechanism>
Referring to FIGS. 5 and 7, the cam mechanism 36 includes a cylinder portion 25 having a fitting portion 38, a cam 39 fitted to the fitting portion 38, a cam 39 and a rotation of the cam 39. And a slide member 40 that linearly reciprocates in the vertical direction Y. The cam 39 has a columnar pedestal 39a, a pair of leg portions 39b protruding forward from the pedestal 39a and fitted to the fitting portion 38, and a columnar body having a smaller diameter than the pedestal 39a. And a convex portion 41 that is located eccentric to the axis P on the rear surface.

  The slide member (dead bolt) 40 has a receiving portion 43 in which the concave portion 42 into which the convex portion 41 of the cam 39 is inserted is located at the center, and a locking portion 44 that is bent upward and forward from the receiving portion 43. . Referring to FIG. 3, in the locked state, the upper end of the locking portion 44 is substantially flush with the arc portion located behind the upper surface side of the base portion 22 and is not in contact with the base end portion 45 of the cap 15. As will be described later, the lower end of the receiving portion 43 is located behind the claw portion 32 in the wide portion of the first groove portion formed on the inner surface of the flange 18.

<Cap>
Referring to FIGS. 5 and 8, the cap 15 is located between the mounting pieces 22a of the base portion 22 and has a cylindrical base end portion 45 having a through hole 45a through which the pin 14 caulked to the mounting piece 22a passes. And a covering portion 46 extending in a bent shape from the base end portion 45. In the base end portion 45, a locked portion 47 and first and second engaging recesses 48 a and 48 b having a depth dimension smaller than that of the locked portion 47 are located that are separated from each other in the circumferential direction. A groove extending in the length direction is formed on the inner surface of the covering portion 46, and a ring-shaped packing 49 that contacts the locking surface 25a when the cap 15 is closed is fixed to the groove. At the tip of the covering portion 46, a gripping portion 50 that protrudes outward in the width direction X and a concave curved portion 51 that is positioned therebetween are provided. Referring to FIG. 1, when the cap 15 is closed so as to cover the keyhole 24, the step-shaped convex curved portion 52 formed between the front surface of the gripping portion 21 and the front surface of the base portion 22 is a concave curved portion. 51, the front surface of the locking device 10 is substantially flush. The gripping portion 50 extends outward in the width direction X from both side portions of the housing 17 and can be easily gripped with a finger when operating the cap 15.

<First cap turning restricting means>
Referring to FIG. 3, a groove 30 into which a spring 29 is fitted is provided at the upper end portion 22 b of the base portion 22 that faces the base end portion 45 of the cap 15. A metal sphere 53 is disposed between the portions 45. The spherical body 53 is constantly biased toward the base end portion 45 by the spring 29. When the locking device 10 is locked, the sphere 53 is engaged with the first engaging recess 48a, and the turning of the cap 15 due to impact or the like is prevented. On the other hand, at the time of unlocking, when the cap 15 is pivoted upward, the sphere 53 is engaged with the second engagement recess 48 b of the base end 45. Thereby, the cap 15 does not turn downward due to its own weight, and the open state of the cap 15 is temporarily maintained.

<Second cap turning restricting means>
Referring to FIGS. 9A and 9B, when the key 20 inserted into the key hole 24 is rotated in one direction, the cylinder portion 25 is rotated in this direction and is inserted into the fitting portion 38 of the cylinder portion 25. The rotational movement of the cam 39 is converted into a linear movement in the vertical direction Y of the slide member 40. That is, in the unlocked state, the slide member 40 moves upward, and the proximal end portion of the cap 15 that is temporarily kept in the turning state by the first cap turning restricting means (the sphere 53 and the second engaging recess 48b). It is engaged with the to-be-latched part 47 of 45.

  Referring to FIG. 10, the flange 18 covers the entire extending portion 23 of the housing 17, and includes an opening 55 through which the extending portion 23 is inserted, a large diameter portion 56 that contacts the rear surface of the base portion 22, and A cylindrical portion 57 extends rearward from the large-diameter portion 56 and has an inner surface screwed onto the outer peripheral surface of the small-diameter portion 23b of the extending portion 23 with an O-ring 54 interposed therebetween. On the inner surface of the large-diameter portion 56, a groove portion 58 extending in the circumferential direction of the flange 18 is provided in which the receiving portion 43 of the slide member 40 and the claw portion 32 of the housing 17 are disposed. The groove portion 58 communicates with the wide portion 59 where the lower end of the receiving portion 43 of the slide member 40 and the claw portion 32 are located in the locked state and the front portion of the wide portion 59, and in the unlocked state, the grip portion 21 is in the R direction. The claw portion 32 has a narrow portion 60 that moves in the direction when the claw portion 32 is swung to the right. When the slide member 40 enters the wide portion 59 of the groove portion 58, the rotation of the lock unit 16 is restricted and locked. Further, in the narrow portion 60, the turning angle of the claw portion 32 in the R direction is restricted to about 60 °.

  Referring to FIGS. 3 to 5, on the rear surface of the flange 18, a packing for preventing water from entering from the front side to the rear side together with the O-ring 54, that is, from the outside to the inside from the mounting hole 12 b of the door 12. 61 is arranged. The packing 61 has a through hole 61a having the same shape as the mounting hole 12b of the door. A cylindrical portion 57 passes through the central portion of the packing 61, and a pair of protrusions 62 extending rearward from the rear surface of the flange 18 are formed through the mounting hole 12b. It is inserted through a portion extending in the vertical direction from the central portion with the hole 61a. The outer peripheral surface of the cylindrical portion 57 inserted through the mounting hole 12 b via the packing 61 is screwed by a nut 64 via a (toothed) washer 63 and fixed to the door 12. A latch plate 26 inserted through a square hole having the same shape as the rear end is attached to the square protrusion 23c located at the rear end of the extending portion 23 of the housing 17 extending rearward from the rear surface of the cylindrical portion 57 (square hole). ) It is fastened by a bolt 67 inserted into the central opening of the square projection 23c via a washer 65 and a (round hole) washer 66.

  In the locking device having such a configuration, the mechanism when unlocking shown in FIG. 4 from the locked state shown in FIG. 3 will be described. First, by inserting the key 20 into the key hole 24 and rotating it in one direction, The cylinder portion 25 rotates and the cam 39 fitted with the fitting portion 38 rotates simultaneously. As the cam 39 rotates, the slide member 40 moves upward, and the lower end of the receiving portion 43 retreats from the wide portion 59 of the groove portion 58 of the flange 18 to release the locking. At the same time, the locking portion 44 of the slide member 40 is locked to the locked portion 47 of the base end portion 45 of the cap 15. In this state, when the gripping portion 21 of the housing 17 is turned in the R direction, the extending portion 23 is turned and the claw portion 32 is turned in the narrow portion 60 of the groove portion 58 until it contacts the side wall 58a in the R direction. In this way, when the extending portion 23 is swung to a predetermined angle (about 60 degrees), the latch plate 26 attached thereto is also swung away from the fixed frame 11 and the gripping portion 21 is pulled forward. The door 12 can be opened. On the other hand, when locking, by rotating the key 20 in the direction opposite to the direction rotated during unlocking, the cam 39 is rotated to re-enter the wide portion 59 of the groove portion 58 of the flange 18 and extend. The rotation of the portion 23 (housing 17) is restricted.

  As described above, when the unlocking operation is performed, the cap 15 is swung upward, and the spherical body 53 is locked to the second engagement recess 48b, so that the swivel state can be maintained temporarily. The operator can perform the locking / unlocking operation with one hand (first cap turning restricting means). Further, in the unlocked state, the slide member 40 moves upward, and the locking portion 44 is locked to the locked portion 47 of the base end portion 45 of the cap 15. It can be reliably maintained (second cap turning restricting means). Thus, in the unlocked state, the first and second cap turning restricting means reliably maintain the turned state of the cap 15 without holding the cap 15 by hand. The indicator means 27 located on the front surface is always exposed to the outside. Therefore, the operator can visually confirm that the locking device 10 is unlocked without directly confirming whether or not the gripping portion 21 can be turned by operating it. In addition, since the indicator means 27 is disposed on the entire front surface except the opening 19 of the base portion 22, the indicator means 27 can be locked and unlocked as long as the indicator means 27 can be visually recognized even at a location relatively away from the locking device 10. For example, it is convenient when it is necessary to confirm locking and unlocking of the plurality of locking devices 10 almost simultaneously.

  Thus, the slide member 40 functions as a locking means together with the cam mechanism 36 and the groove portion 58 of the flange 18, and also functions as a second cap turning restricting means together with the locked portion 47 of the base end portion 45 of the cap 15. To do. When the slide member 40 fulfills a plurality of functions, the configuration and the assembly operation can be simplified and the manufacturing cost can be reduced as compared with the case where separate members constituting each function are arranged.

<Example of change>
Referring to FIG. 11, in the present embodiment, the receiving portion 43 and the locking portion 44 of the slide member 40 have a rod shape extending continuously in the vertical direction Y, and the base end portion 45 of the cap 15 is the first. Compared to the embodiment, it is arranged rearward. Even if the slide member 40 has such a form, the form of the slide member 40 can be appropriately changed as long as the function as the locking means and the cap turning restricting means can be exhibited and the effects of the present invention can be obtained. Can do. Moreover, in this embodiment, each component which comprises a 1st cap turning control means is not arrange | positioned, and the turning of a cap is controlled only by a 2nd cap turning control means. Even in such a case, at the time of unlocking, there is no fear that the cap 15 turns downward due to its own weight, and the operator locks the locking device 10 by covering the indicator means 27 with the cap 15. There is no misrecognition.

  The components used in the locking device 10 according to the present invention include various known materials that are usually used in this type of field, in addition to the materials described in the present specification, unless otherwise specified. Can be used without limitation. The locking device 10 has an O-ring 54 and packings 49 and 61 and has a waterproof function. However, as long as the effects of the present invention are achieved, the locking device 10 has a configuration that does not have such a waterproof function. May be. Moreover, in each embodiment of this application, although the handle locking device used, such as a door for waterproofing chambers, a switchboard door, etc. is illustrated as the locking device 10, the 2nd cap rotation control means and locking means by the slide member 40 are illustrated. As long as it has the structure, it can also be used for a locking device that does not have a handle in which a known cylinder lock is covered with a cap.

10 Locking device 14 Pin (shaft)
15 Cap 17 Housing 16 Lock unit 24 Key hole 27 Indicator means 36 Cam mechanism 39 Cam 40 Slide member 44 Locking portion 45 Base end portion 46 Covering portion 47 Locked portion 48 First and second engaging recesses 53 Sphere 58 Groove Y Vertical direction

Claims (4)

In a locking device comprising a housing having a vertical direction and having a lock unit, and a cap pivotably attached to the housing,
The cap includes a base end portion fixed to the housing via a shaft, and a covering portion that covers the key hole that is bent from the base end portion and extends in front of the shaft and located on the front surface of the housing. Have
The base end portion has a locked portion and a plurality of engaging recesses arranged in the outer peripheral surface of the base end portion so as to be spaced apart from each other in the circumferential direction.
The lock unit has a cam mechanism that converts a rotational motion of a cam that rotates in conjunction with an unlocking operation into a linear motion in the vertical direction of a slide member connected thereto,
The slide member has a receiving part connected to the cam, and a locking part extending upward from the receiving part,
The housing has a sphere that is spring-biased in a direction intersecting the front surface of the housing so as to face the base end, and the sphere is engaged with the engagement recess in the locked and unlocked state,
During the unlocking operation, the sphere of the housing is engaged with the engagement concave portion of the cap in a state in which the sphere is swung upward, and the locking portion of the slide member moved upward is the cover of the cap. The locking device according to claim 1, wherein the cap is restricted from turning downward by being locked by the locking portion .   2. The locking device according to claim 1, wherein the housing has a groove portion in which a lower end of the slide member can enter and retreat, and the unlocking operation of the lock unit is restricted by the lower end being positioned in the groove portion.   3. The locking device according to claim 1, wherein the housing has indicator means that is located on an outer periphery of the keyhole and is covered with the covering portion in a state where the cap is closed. The indicator means, locking device according to claim 1 provided by the fluorescent coating.

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