JP4652999B2 - Locking device, cap and guard plate - Google Patents

Description

  The present invention relates to a locking device that performs locking and unlocking by rotating a key, and a cap and a guard plate used in the locking device.

  2. Description of the Related Art Conventionally, a locking device that locks / releases a key by rotating a key is used in an automobile or the like. This locking device includes a key cylinder that is locked and released by a key inserted into the key hole, and a cap that is formed with a key hole and covers the key cylinder from the front side.

  The locking device further includes a guard plate that is rotatably provided along with the key rotation operation between the key cylinder and the cap in order to prevent the tool from entering when the tool is illegally inserted into the keyhole. (For example, refer to Patent Document 1).

In addition, the inner side surface which is the surface by the side of the guard plate in a cap, and the outer side surface which is the surface by the side of the cap in a guard plate are formed in the plane. For this reason, grease for maintaining the sliding / lubricating state is applied between the cap and the guard plate.
JP-A-2-3561 (Pages 2 to 3 and FIG. 1)

  However, in the above-described conventional locking device, if a foreign object (dust or sand attached to the key) enters between the cap and the guard plate when the key is inserted, the cap and the guard plate are gradually worn. In addition, the inner surface of the cap or the outer surface of the guard plate (so-called plating or lining) may be peeled off.

  For this reason, the plating or lining and foreign matter that have peeled off exist between the cap and the guard plate, so that every time the guard plate is rotated by the key, the peeled plating or lining and foreign matter are capped with grease. There is a problem that the feeling of operation deteriorates due to spreading between the guard plate and the guard plate. In the worst case, a rotation failure may occur.

  As described above, since the key hole communicating with the key hole of the key cylinder is formed in the cap or the guard plate, it is difficult to completely prevent the intrusion of the foreign matter.

  Therefore, the present invention has been made in view of the above-mentioned problems, and even if a foreign object enters between the cap and the guard plate, the cap or the guard plate can be prevented from being plated or peeled off. An object of the present invention is to provide a locking device capable of suppressing deterioration of the operational feeling, and a cap and a guard plate used in the locking device.

In order to solve the above-described problems, the present invention has the following features. First, the invention according to the first aspect of the present invention has a keyhole key is inserted, a key cylinder for locking and releasing by said key to be inserted the keyhole, the keyhole which the key is inserted formed A cap that covers the key cylinder from the front side, a key hole into which the key is inserted is formed, and a guard plate that is provided between the key cylinder and the cap so as to be rotatable with the rotation of the key, and the inner surface is a surface of the guard plate side of the cap, the outer surface is facing a surface of the cap side of the guard plate, is used for at least one of the sites that slide is projection is provided It is a summary.

  According to such a feature, the cap and the guard plate are provided by providing the protrusion on at least one of the inner surface that is the guard plate side surface of the cap and the outer surface that is the cap side surface of the guard plate. Even if a foreign substance enters between the two, the foreign substance can be released to the groove section (that is, the inner side face of the cap or the outer side face of the guard plate) defined by the protrusions.

  For this reason, no foreign matter is present in the protrusions where the cap and the guard plate are in contact with each other, thereby reducing wear between the cap and the guard plate (that is, the resistance of the guard plate pressed against the cap is reduced (the area is reduced)). Therefore, plating of the cap or guard plate and peeling of the lining can be reduced.

  Moreover, durability (life) of this cap or guard plate can be improved by reducing plating of the cap or guard plate or peeling of the lining.

  Furthermore, since no foreign matter is present in the protrusions where the cap and the guard plate are in contact, a stable sliding / lubricating state can be maintained by the grease, and deterioration of the operational feeling can be suppressed.

  The invention according to the second feature of the present invention is summarized in that the protrusion is formed by a rib or a groove.

  According to such a feature, since the protrusion is formed of a rib or a groove, the durability of the protrusion can be improved and the cost can be reduced as compared with the case where the protrusion is retrofitted by another member. be able to.

  The gist of the invention according to the third feature of the present invention is that the protrusion is formed in an annular shape.

  According to such a feature, since the protrusion is formed in an annular shape, the resistance of the guard plate pressed against the cap becomes uniform in the rotation direction of the key, and the rotation operation of the key when performing locking / release is performed smoothly. It becomes possible.

  The invention according to the fourth feature of the present invention is summarized in that the protrusion is formed concentrically with the rotation center of the key.

  According to such a feature, since the protrusion is formed concentrically with the rotation center of the key, the rotation operation of the key when performing locking / release can be performed more smoothly.

  In the invention according to the fifth feature of the present invention, a plurality of protrusions are provided, and the center side protrusion height at which the center side protrusion located on the rotation center side of the key protrudes is higher than that of the center side protrusion. The gist is that it is the same as or higher than the outer peripheral protrusion height at which the outer peripheral protrusions located on the outer peripheral side protrude.

  According to such a feature, the cap and guard plate are compared with the case where the outer side protruding height is higher than the center side protruding height because the center side protruding height is the same as or higher than the outer side protruding height. It is possible to reduce foreign matter that enters between the two.

  The invention according to the sixth feature of the present invention is that the outer peripheral projection has a notch, and the notch is flush with the inner surface of the cap or the outer surface of the guard plate. To do.

  According to this feature, the outer peripheral projection has a notch, so that the foreign matter that has entered the groove defined by the central projection and the outer projection every time the guard plate rotates. It is possible to escape to the groove section defined by the outer peripheral projection and the outer protrusion 75 located on the outer peripheral side of the outer peripheral protrusion.

  The gist of the seventh aspect of the present invention is that the protrusion has a rounded corner.

  According to such a feature, since the protrusion has a rounded shape at the corner, foreign matter that has entered between the cap and the guard plate can easily escape to the groove defined by the protrusion.

The invention according to an eighth aspect of the present invention, the key is keyhole formed to be inserted, a key cylinder for locking and releasing by said key to be inserted the keyhole across the guard plate from the front side of the key cylinder The gist of the present invention is that the cover is a cap, and a protrusion is provided at a portion that faces and slides on the guard plate on the inner surface that is the surface on the guard plate side.

  According to such a feature, even when a foreign object enters between the cap and the guard plate, it is possible to reduce plating of the cap or the guard plate and peeling of the lining, and to suppress deterioration of the operation feeling. Caps that can be provided can be provided.

The invention according to a ninth aspect of the present invention, the key is keyhole formed to be inserted, between the cap covering the key cylinder and the key cylinder from the front side for locking and releasing by said key to be inserted the keyhole The gist of the present invention is that a guard plate is provided on the outer side surface of the cap side, which is opposed to and slides on the cap side.

  According to such a feature, even when a foreign object enters between the cap and the guard plate, it is possible to reduce plating of the cap or the guard plate and peeling of the lining, and to suppress deterioration of the operation feeling. A guard plate that can be provided can be provided.

  According to the present invention, even when foreign matter enters between the cap and the guard plate, plating of the cap or the guard plate and peeling of the lining can be reduced, and deterioration of the operation feeling is suppressed. And a cap and a guard plate used in the locking device.

  Hereinafter, an example of the locking device according to the present embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings is contained.

(Configuration of lock device)
The configuration of the lock device according to the present embodiment will be described with reference to FIGS. FIG. 1A is a front view (initial state) of the locking device according to the present embodiment, and FIG. 1B is an axial sectional view (initial state) of the locking device according to the present embodiment. 2A is a front view (operation state) of the lock device according to the present embodiment, and FIG. 2B is an axial sectional view of the lock device according to the present embodiment (operation state). ).

  As shown in FIGS. 1 and 2, the lock device 1 is applied to a steering lock device that simultaneously controls a steering shaft and an ignition switch of an automobile. The locking device 1 is roughly constituted by a casing body 10, a housing case 20, a key cylinder 30, a cam portion 40, and a lock portion 50.

  The casing body 10 is assembled around a steering shaft (not shown) which is one of movable members disposed in the vehicle. The casing body 10 is formed with a fixing portion 11 that is fixed to the steering shaft.

  The housing case 20 is formed in a substantially cylindrical shape provided inside the casing body 10. The housing case 20 houses a key cylinder 30 inside a substantially cylindrical shape.

  The key cylinder 30 is rotatably provided inside the housing case 20. The key cylinder 30 is provided with a key hole 31 into which the key K (see FIG. 2) is inserted on one end side, and a connecting portion 32 connected to the cam portion 40 on the other end side.

  The key cylinder 30 is disposed inside the casing body 10 so that the key hole 31 is positioned on the front side (tip side) on one end side of the casing body 10 in a state of being rotatably housed inside the housing case 20. Has been.

  The key cylinder 30 is locked and released by a key K inserted into the key hole 31. Specifically, the key cylinder 30 is unlocked only when the key K inserted into the keyhole 31 is the corresponding key K, and the key K is rotatable together with the connecting portion 32.

  A key insertion detection mechanism 60 is disposed on the housing case 20 and the key cylinder 30. The key insertion detection mechanism 60 detects whether or not the key K (see FIG. 2) has been inserted. Specifically, the key insertion detection mechanism 60 includes an insertion hole 61 that communicates from the outer periphery of the key cylinder 30 to the key hole 31, a key lidar, a spacer, and a key insertion detection switch (not shown) disposed in the insertion hole 61. Has been.

  A cap 70 and a guard plate 80 are disposed on the front side of the housing case 20 and the key cylinder 30. Details of the cap 70 and the guard plate 80 will be described later. The guard plate 80 is urged (pressed) against the cap 70 by an urging portion 33 provided on the front side of the key cylinder 30.

  The cam portion 40 includes a cam 41 that rotates together with the connecting portion 32 of the key cylinder 30 and a hanger 42 that switches the rotational motion of the cam 41 to a reciprocating motion. The hanger 42 is slidably disposed in a hanger storage portion 43 provided in the casing body 10 so as to be perpendicular to the axial direction of the casing body 10.

  The lock part 50 is housed in the casing body 10 and is provided so as to be movable (slidable) between a locking position for engaging with a steering shaft (not shown) and a release position for releasing the engagement. The lock portion 50 is provided along the hanger storage portion 43 and is slidably disposed in the lock storage portion 13 provided with the insertion hole 12 on the side surface of the casing body 10.

  The lock portion 50 holds the lock urging spring 15 between its one end and the back wall 14 of the lock storage portion 13 and is urged and held toward the insertion hole 12. In addition, the lock portion 50 is biased and held toward the insertion hole 12 by the lock biasing spring 15, so that the cam 41 rotates and at the same time is engaged with the steering shaft (not shown) together with the hanger 42. And the release position for releasing the engagement.

(Cap and guard plate)
Next, the cap 70 and the guard plate 80 described above will be described with reference to FIGS. 3 is a perspective view of a cap and a guard plate according to the present embodiment, FIG. 4 is a rear view of the cap according to the present embodiment (A arrow diagram of FIG. 3), and FIG. FIG. 6 is an axial sectional view (BB sectional view of FIG. 4) of the cap according to the embodiment, and FIG. 6 is an axial sectional view (enlarged sectional view of FIG. 5) of the cap according to the present embodiment. .

  As shown in FIG. 3, the cap 70 has a disk shape and covers the key cylinder 30 (including the casing body 10 and the housing case 20) from the front side. The cap 70 is formed with a key hole 71 into which the key K (see FIG. 2) is inserted, and an engaging portion 72 that is engaged with (attached to) the casing body 10.

  The guard plate 80 prevents the tool from entering when the tool is illegally inserted into the key hole 71 of the cap 70. The guard plate 80 is provided between the key cylinder 30 and the cap 70 so as to be rotatable together with the rotation operation of the key K (see FIG. 2). That is, the guard plate 80 is rotatably provided at the same angle as the rotation angle (α) of the key K (see FIG. 4). The guard plate 80 is formed with a key hole 81 into which the key K is inserted.

  Here, as shown in FIGS. 4 to 6, a protrusion 73 is provided on the inner surface of the cap 70 on the guard plate side. The protrusion 73 is formed in an annular shape by ribs or grooves.

  Specifically, the protrusion 73 includes a center-side protrusion 73A positioned on the rotation center side of the key K (see FIG. 2), and an outer peripheral-side protrusion 73B positioned on the outer peripheral side of the center-side protrusion 73A. It is comprised by these two cyclic | annular forms.

  The center side protrusion 73A and the outer periphery side protrusion 73B (projection 73) are formed concentrically with the rotation center of the key K. Further, the center side protrusion 73A and the outer periphery side protrusion 73B have rounded corners (R is given).

  The center side protrusion height at which the center side protrusion 73A protrudes is the same as or higher than the outer periphery protrusion height at which the outer periphery protrusion 73B protrudes (see FIG. 6).

  Further, the outer peripheral projection 73B has two cutout portions 74. The notch 74 is flush with the inner surface of the cap 70. Further, the outer peripheral protrusion 73B is chamfered toward the notch 74.

  The notches 74 formed at two locations are used to remove foreign matter that has entered the groove D1 defined by the center-side protrusion 73A and the outer-side protrusion 73B from the outer-side protrusion 73B and the outer-side protrusion. In order to make it easy to escape to the groove part D2 defined by the outer protrusion 75 positioned on the outer peripheral side with respect to 73B, it is preferably formed at an interval of 140 to 160 degrees (β).

  In particular, one of the notches 74 formed at two locations is when the cap 70 is engaged (attached) to the casing body 10 in order to make it easier for the foreign matter that has entered the groove D1 to escape to the groove D2 by gravity. It is preferable to be arranged on the lower side.

(Action / Effect)
According to the locking device 1 and the cap 70 and guard plate 80 used in the locking device 1 according to the present embodiment described above, the guard plate 80 includes the key cylinder 30 and the cap 70 as shown in FIGS. 2, even if foreign matter enters between the cap 70 and the guard plate 80, the foreign matter is grooved D (that is, separated by the projection 73) (ie, It is possible to escape to the inner surface of the cap 70.

  For this reason, since no foreign matter is present in the protrusion 73 where the cap 70 and the guard plate 80 are in contact with each other, wear of the cap 70 and the guard plate 80 is reduced (that is, the resistance of the guard plate 80 pressed against the cap 70 is reduced). Therefore, plating of the cap 70 or the guard plate 80 and peeling of the lining can be reduced.

  Further, since the plating of the cap 70 or the guard plate 80 and the peeling of the lining can be reduced, the durability (life) of the cap 70 and the guard plate 80 can be improved.

  Furthermore, since no foreign matter is present in the protrusion 73 where the cap 70 and the guard plate 80 are in contact, a stable sliding / lubricating state can be maintained by the grease G, and deterioration of the operational feeling is suppressed. be able to.

  As shown in FIGS. 7 and 8, since the guard plate 80 is rotated between the key cylinder 30 and the cap 70 by the key K (see FIG. 2), the grease G for maintaining the sliding / lubricating state is maintained. Can be spread between the cap 70 and the guard plate 80 by applying to the left and right sides of the inner surface of the cap 70 (or the outer surface of the guard plate 80).

  Further, since the protrusion 73 is formed of a rib or a groove, the durability of the protrusion 73 can be improved and the cost can be reduced as compared with the case where the protrusion is retrofitted by another member. it can.

  Further, since the protrusion 73 is formed in an annular shape and the protrusion 73 (see FIG. 2) is formed concentrically with the rotation center of the key K, the resistance of the guard plate 80 pressed against the cap 70 can be reduced. It becomes uniform in the rotation direction of K, and it is possible to smoothly perform the rotation operation of the key K when performing locking / release.

  Further, since the center side protruding height is the same as the outer periphery side protruding height or higher than the outer periphery side protruding height, the cap 70 and the guard plate 80 are compared with the case where the outer periphery side protruding height is higher than the center side protruding height. Foreign matter entering between them can be reduced. At this time, since the guard plate 80 is urged (pressed) against the cap 70 by the urging portion 33, the outer peripheral projection 73B can support the guard plate 80 in a well-balanced manner.

  In addition, since the outer circumferential protrusion 73B has the notch 74, it is possible to allow foreign matter that has entered the groove D1 to escape to the groove D2 each time the guard plate 80 rotates.

  Further, the protrusion 73 (the center-side protrusion 73A and the outer peripheral-side protrusion 73B) has a shape with rounded corners, so that foreign matter that has entered between the cap 70 and the guard plate 80 is removed by the protrusion 73. It becomes easy to escape to the groove part D1, D2 divided.

(Modification 1)
Although it has been described that the protrusion 73 is provided on the inner side surface of the cap 70 according to the above-described embodiment, the following changes can be made. In addition, the part which is different from the cap and guard plate which concern on embodiment mentioned above is mainly demonstrated.

  The protrusion 73 is not provided on the inner peripheral surface of the cap 70 described above, and may be formed as a flat surface. In this case, as shown in FIG. 9, a protruding portion 82 is provided on the outer surface which is the cap-side surface of the guard plate 80. The protrusion 82 is formed in an annular shape by ribs or grooves.

  Specifically, the protrusion 82 includes a center-side protrusion 82A positioned on the rotation center side of the key K (see FIG. 2), and an outer peripheral-side protrusion 82B positioned on the outer peripheral side of the center-side protrusion 82A. It is comprised by these two cyclic | annular forms.

  The central protrusion 82A and the outer protrusion 82B (protrusion 82) are formed concentrically with the rotation center of the key K in order to smoothly perform the rotation operation of the key K when locking and releasing. It is preferable.

  Further, the center side protrusion 82A and the outer periphery side protrusion 82B (protrusion 82) have rounded corners (R is applied) so that foreign matter can easily escape to the groove D every time the guard plate 80 rotates. A) The shape is preferred.

  Further, the center-side protruding height at which the center-side protruding portion 82A protrudes is the outer-side protruding height at which the outer-side protruding portion 82B protrudes in order to reduce foreign matter entering between the cap 70 and the guard plate 80. Or higher than the protrusion height on the outer peripheral side.

  Moreover, it is preferable that the outer peripheral projection 82B has a notch 83 so that foreign matter is more easily released to the outer peripheral side than the outer peripheral projection 82B every time the guard plate 80 rotates. In this case, it is more preferable that the notch 83 is flush with the outer surface of the guard plate 80. Further, it is more preferable that the outer peripheral projection 82B is chamfered toward the notch 83.

[Other embodiments]
As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention.

  For example, in the above-described embodiment, the protrusion 73 has been described as having two annular shapes including the center-side protrusion 73A and the outer peripheral protrusion 73B. However, the present invention is not limited to this. Of course, it may be composed of three rings or the like.

  In the above-described embodiment, the lock device 1 has been described as being applied to a steering lock device that simultaneously controls a steering shaft and an ignition switch of an automobile. However, the present invention is not limited to this. Of course, it can also be applied to a locker lock or the like.

  In the second modification described above, the projecting portion 82 has been described as having two annular shapes including the central projecting portion 82A and the outer peripheral projecting portion 82B. However, the present invention is not limited to this. Of course, it may be composed of three rings or the like.

  From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

It is a figure (front view and axial direction sectional view) which shows the initial state of the locking device which concerns on this Embodiment. It is a figure (a front view and axial direction sectional view) which shows the operation state of the locking device which concerns on this Embodiment. It is a perspective view of the cap and guard plate which concern on this Embodiment. It is a rear view (A arrow figure of FIG. 3) of the cap which concerns on this Embodiment. It is an axial sectional view (BB sectional view of Drawing 4) of the cap concerning this embodiment. It is an axial sectional view (enlarged sectional view of FIG. 5) of the cap according to the present embodiment. It is a rear view which shows the initial state of the cap and guard plate which concern on this Embodiment. It is a rear view which shows the operation state of the cap and guard plate which concern on this Embodiment. It is a front view of the guard plate concerning the example 1 of a change.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Locking device, 10 ... Casing main body, 11 ... Fixing part, 12 ... Insertion hole, 13 ... Lock storage part, 14 ... Back wall, 15 ... Lock biasing spring, 20 ... Housing case, 30 ... Key cylinder, 31 ... Keyhole, 32 ... connecting part, 33 ... biasing part, 40 ... cam part, 41 ... cam, 42 ... hanger, 43 ... hanger storage part, 50 ... lock part, 60 ... key insertion detection mechanism, 61 ... insertion hole, 70 DESCRIPTION OF SYMBOLS ... Cap, 71 ... Key hole, 72 ... Engagement part, 73 ... Projection part, 73A ... Center side projection part, 73B ... Outer peripheral side projection part, 74 ... Notch part, 75 ... Outer projection, 80 ... Guard plate, 81 ... Keyhole, 82 ... projection, 82A ... center projection, 82B ... outer projection, 83 ... notch, D, D1, D2 ... groove, G ... grease, K ... key

Claims (9)

Has a keyhole key is inserted, a key cylinder for locking and releasing by said key to be inserted the keyhole,
A cap hole into which the key is inserted is formed, and a cap that covers the key cylinder from the front side;
A keyhole into which the key is inserted is formed, and a guard plate is provided between the key cylinder and the cap so as to be rotatable with the rotation of the key.
And the inner surface is a surface of the guard plate side of the cap, the outer surface is facing a surface of the cap side of the guard plate, is used for at least one of the sites that slide is projection is provided A locking device characterized in that:   The locking device according to claim 1, wherein the protrusion is formed by a rib or a groove.   The locking device according to claim 1, wherein the protrusion is formed in an annular shape.   The locking device according to claim 3, wherein the protrusion is formed concentrically with a rotation center of the key. A plurality of the protrusions are provided,
The center-side protruding height at which the center-side protruding portion located on the rotation center side of the key protrudes is the same as the outer-side protruding height at which the outer-side protruding portion located on the outer peripheral side from the center-side protruding portion protrudes. Or the locking device according to claim 3, wherein the locking device is higher than the outer peripheral protruding height. The outer peripheral projection has a notch,
6. The locking device according to claim 3, wherein the notch is flush with an inner surface of the cap or an outer surface of the guard plate.   The locking device according to any one of claims 1 to 6, wherein the protrusion has a rounded corner. Key is keyhole formed to be inserted, a cap covering across the guard plate from the front side of the key cylinder for locking and releasing by said key to be inserted the into the keyhole the key cylinder,
A cap provided with a protrusion on a portion of the inner surface , which is a surface on the guard plate side, facing and sliding on the guard plate . Key is keyhole formed to be inserted, said key cylinder and a key cylinder for locking and releasing by said key to be inserted the keyhole a guard plate is provided between the cap covering from the front side,
A guard plate, characterized in that a protrusion is provided on a portion of the outer surface , which is a surface on the cap side, facing and sliding with the cap .

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