JP7029616B2 - Lid lock device - Google Patents

Description

The present invention relates to a lid locking device such as a vehicle fuel lid.

The fuel supply unit structure of a vehicle described in Patent Document 1 below includes a fuel lid capable of opening and closing a fuel supply opening of a vehicle body, and a fuel adapter (base) connected from the fuel supply opening to the fuel supply port. A lock mechanism for locking the fuel lid and a push-push type (knock cam type) push lifter for pushing open the fuel lid by a push operation are separately attached to the fuel adapter.

On the other hand, the lid device described in Patent Document 2 below is configured to lock and unlock the fuel lid by the push rod of the knock cam type push lifter. In this lid device, the push rod is locked by an electric lock mechanism fixed to the opening housing (base) together with the push lifter. This push rod rotates 90 ° forward about the axis while being displaced from the immersion position to the protrusion position when the fuel lid is pushed open. As a result, the engagement between the locking piece provided at the tip of the push rod and the fuel lid is released, and the fuel lid is unlocked. Further, when the fuel lid is closed, the push rod is displaced by 90 ° in the reverse direction around the axis while being displaced from the protruding position to the immersion position. As a result, the locking piece locks the fuel lid. Then, the electric lock mechanism locks the push rod in this state, so that the push rod is held in the locked state.

In the lid opening / closing device described in Patent Document 3 below, the fuel lid is locked and unlocked by the push rod of the push lifter, and is integrated with the push lifter, similarly to the lid device described in Patent Document 2 below. The push rod is locked by an electric lock mechanism. In this lid switchgear, the push lifter is a heart cam type.

Japanese Unexamined Patent Publication No. 2010-6114 Japanese Unexamined Patent Publication No. 2014-91841 U.S. Patent Application Publication No. 2010/0045049

In the prior art described in Patent Document 1, since the lock mechanism and the push lifter are separately attached to the fuel adapter (base), the attachment structure becomes complicated. In this respect, in the prior art described in Patent Documents 2 and 3, the push lifter and the lock mechanism are attached to the substrate together, so that the attachment structure is simplified.

However, in the prior art described in Patent Documents 2 and 3, if the push rod is accidentally pushed into the immersion position during refueling, that is, when the fuel lid is open, the push rod rotates in the reverse direction and locks. Become a posture. In this state, the locking piece of the push rod improperly engages with the fuel lid, so that the fuel lid cannot be closed, so that it takes time and effort to push the push lifter back. Further, if the push lifter fails while the fuel lid is closed, the fuel lid remains locked by the push rod, and the fuel lid (lid) cannot be opened.

In view of the above circumstances, the present invention can close the lid without pushing back the push rod that has been accidentally pushed in, and can open the lid even if the push lifter fails in the closed state of the lid, and to the substrate. It is an object of the present invention to provide a lid lock device that simplifies the mounting structure of the device.

The lid lock device according to claim 1 is a case in which the lid is attached to a substrate pivotally supported so as to be openable and closable, and the lock shaft is rotated in the forward and reverse directions by the driving force of a drive source housed in the case. It has a lock mechanism for locking and unlocking the lid by a lock portion formed at the tip of the rod, and a push rod formed in a tubular shape and supported by the case and having the lock shaft inserted inside. Each time the push rod is pushed in the axial direction, protrusion and retracting are alternately repeated, and a push lifter that pushes the lid open by the protrusion of the push rod is provided , and the lock shaft is of the push rod. Regardless of the push operation, it is rotated in the forward and reverse directions by the driving force of the driving source .

The "cylindrical" according to claim 1 includes an open cross section such as a C-shaped cross section or a U-shaped cross section when viewed from the axial direction. That is, the "push rod" according to claim 1 may be a substantially cylindrical one into which a lock shaft can be inserted.

In the invention according to claim 1, the case is attached to a substrate in which the lid is pivotally supported so as to be openable and closable. In this case, the drive source of the lock mechanism is housed, and the push rod of the push lifter is supported. In the above-mentioned lock mechanism, the lock shaft is rotated in the forward and reverse directions by the driving force of the drive source, and the lid is locked and unlocked by the lock portion formed at the tip of the lock shaft. The push rod is formed in a cylindrical shape, and each time it is pushed in the axial direction, it alternately repeats protruding and retracting. The protrusion of this push rod pushes open the lid.

In the present invention, the lock shaft is rotated by the driving force of the drive source regardless of the push operation of the push rod. Therefore, even if the push rod is accidentally pushed into the retracted position with the lid open, the lock shaft is rotated. Will not be rotated to the locked position. Therefore, the lid can be closed without pushing the push rod back to the protruding position. Further, since the lock shaft is rotated independently of the push operation of the push rod as described above, the lid can be opened even if the push lifter fails in the closed state of the lid. Moreover, since the lock mechanism and the push lifter are not separately attached to the substrate, the attachment structure to the substrate is simplified.

In the lid lock device according to claim 2, the lock shaft and the push rod are arranged coaxially in the lid lock device according to claim 1.

In the invention according to claim 2, since the push rod formed in a cylindrical shape and the lock shaft inserted inside the push rod are arranged coaxially, the space for arranging the push rod and the lock shaft is saved. Space can be achieved.

The lid lock device according to claim 3 is the lid lock device according to claim 1 or 2, wherein the lock mechanism has a rotation operation unit projecting to the outside of the case, and the rotation operation unit of the rotation operation unit. The lock shaft can be rotated forward and backward by a rotation operation.

In the invention according to claim 3, the lock shaft can be rotated in the forward and reverse directions by rotating the rotation operation unit protruding to the outside of the case. As a result, the lid can be locked and unlocked even when the drive source of the lock mechanism does not operate due to a trouble in the electric system, for example.

The lid lock device according to claim 4 is the lid lock device according to any one of claims 1 to 3, wherein the lock mechanism engages with the worm rotated by the drive source. It also has a fan-shaped worm wheel that is rotated integrally with the lock shaft.

In the invention according to claim 4, when the worm is rotated by the drive source, the fan-shaped worm wheel meshed with the worm is rotated integrally with the lock shaft. In this way, by using the worm and the fan-shaped worm wheel, the lock mechanism can be made into a simple and compact configuration.

The lid lock device according to claim 5 is the lid lock device according to any one of claims 1 to 4, wherein the lock portion engages inside the push rod when the push rod is in a protruding state. By matching, the rotation of the lock shaft is restricted.

According to the fifth aspect of the present invention, in the protruding state of the push rod, that is, in the open state of the lid, the lock portion of the lock shaft engages with the inside of the push rod, so that the rotation of the lock shaft is restricted. This makes it possible to prevent the lock shaft from being inadvertently rotated even if the drive source is erroneously operated while the push rod is in a protruding state.

The lid lock device according to claim 6 is the lid lock device according to any one of claims 1 to 5, wherein the lid is closed and locked by the lock shaft. The convex portion formed on the shaft enters the groove formed inside the push rod, so that the push rod cannot be pushed.

According to the sixth aspect of the present invention, when the lid is closed and locked by the lock shaft, the push rod of the push lifter cannot be pushed, so that the push lifter can be prevented from malfunctioning. ..

The lid lock device according to claim 7 is the lid lock device according to any one of claims 1 to 6, wherein the lock portion is housed inside the push rod when the push rod is in a protruding state. Will be done.

According to the seventh aspect of the present invention, in the protruding state of the push rod, that is, in the open state of the lid, the lock portion of the lock shaft is housed inside the push rod, so that the lock portion can be prevented from being damaged.

As described above, according to the present invention, the lid can be closed without pushing back the push rod that has been accidentally pushed in, and the lid can be opened even if the push lifter fails in the closed state of the lid. Moreover, the mounting structure on the substrate is simplified.

It is a perspective view which shows the fuel lid assembly configured including the lid lock device which concerns on embodiment of this invention, and is the figure which shows the open state of a fuel lid. It is a perspective view which looked at the fuel lid assembly shown in FIG. 1 from the angle different from FIG. It is a perspective view corresponding to FIG. 2 which shows the closed state of a fuel lid. FIG. 3 is a plan view of a part of the configuration shown in FIG. 3 as viewed from the direction of arrow A in FIG. 3, and is a diagram showing an unlocked state of the fuel lid. It is a top view corresponding to FIG. 4 which shows the locked state of a fuel lid. It is a perspective view which shows the lid lock device which concerns on embodiment of this invention, and is the figure which shows the state which the push rod is located in the retracted position, and the lock shaft is located in the unlocked position. It is a perspective view corresponding to a part of FIG. 6 which shows the state which the lock shaft is located in the lock position. It is a perspective view corresponding to a part of FIG. 6 which shows the state which a push rod is located in a protruding position. It is an exploded perspective view which shows the lid lock device which concerns on embodiment of this invention. It is a perspective view which shows the state which a part of FIG. 6 is enlarged and the push rod is cut in the axial direction. It is a perspective view corresponding to FIG. 10 which shows the state which the lock shaft is located in the lock position. FIG. 8 is a plan view of a part of the configuration shown in FIG. 8 as viewed from the direction of arrow B in FIG. It is a perspective view which shows the modification of the lid lock device which concerns on embodiment of this invention. It is an exploded perspective view which shows the modification.

Hereinafter, the lid lock device 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 12. For convenience of explanation, the arrows FR and UP shown in FIGS. 6 to 12 are the forward direction and the upward direction of the lid lock device 10, respectively. Hereinafter, when the description is simply made using the front-back and up-down directions, the direction with respect to the lid lock device 10 is shown. These directions are independent of the orientation of the lid lock device 10 in use. Further, in each drawing, some reference numerals may be omitted in order to make the drawings easier to see.

(Constitution)
As shown in FIGS. 1 to 5, the lid lock device 10 according to the present embodiment is a component of the fuel lid assembly 12. The fuel lid assembly 12 is attached to the vehicle body of a vehicle such as an automobile and constitutes a part of a fuel supply unit, and is pivotally supported by an opening housing 14 as a substrate and an opening housing 14 so as to be openable and closable. It is equipped with a fuel lid 16 as a lid.

The opening housing 14 is formed of, for example, a resin in a long box shape, and has an opening 14A on one side in a direction orthogonal to the longitudinal direction. A fuel supply port 18 is formed on the bottom wall 14B of the opening housing 14. A fuel supply pipe (not shown) is connected to the fuel supply port 18.

The fuel lid 16 is formed of, for example, a resin in a long plate shape, and one end in the longitudinal direction is pivotally supported by one end in the longitudinal direction of the opening housing 14. The fuel lid 16 is located between an open position (positions shown in FIGS. 1 and 2) for opening the opening 14A and a closed position (positions shown with FIGS. 3 to 5) for closing the opening 14A. It is rotatable with respect to the opening housing 14. A substantially rectangular lock hole 20 is formed at the other end of the fuel lid 16 in the longitudinal direction, and a lid lock device 10 is attached to the other end of the opening housing 14 in the longitudinal direction. The lid lock device 10 is arranged at a position facing the lock hole 20 in a state where the fuel lid 16 is located at a closed position (closed state).

As shown in FIGS. 1 to 12, the lid lock device 10 includes a case 30, a lock mechanism 40, and a push lifter 60. The case 30 is composed of an upper case 32 and a lower case 34 which are vertically divided and connected to each other. The upper case 32 and the lower case 34 are connected by, for example, claw fitting.

A pair of front and rear fixing portions 32A and 32B extending upward are formed at both front and rear ends of the upper case 32. These fixing portions 32A and 32B are fixed to the opening housing 14 by means such as screwing. As a result, the lid lock device 10 is configured to be attached to the opening housing 14. Further, a tubular portion 32C having a short axial dimension is formed in the front portion of the upper case 32. The tubular portion 32C is formed with the vertical direction of the lid lock device 10 as the axial direction.

The lock mechanism 40 includes a drive unit 42 housed in the case 30 and a lock shaft 46 rotated by the drive unit 42. The drive unit 42 includes a motor 48 as a drive source, a worm 50 that is rotated integrally with a rotation shaft (not shown) of the motor 48, and a fan-shaped worm wheel 52 that is meshed with the worm 50. The worm 50, the worm wheel 52 and the lock shaft 46 are made of, for example, resin.

The motor 48 is housed in the rear portion of the case 30 in a posture in which the axial direction of the rotation shaft (not shown) is along the front-rear direction of the lid lock device 10. The motor 48 is configured to be rotated in the forward and reverse directions by, for example, operating a centralized door lock button (not shown) provided around the driver's seat of the vehicle.

The worm 50 is housed in the front portion of the case 30 and is coaxially fixed to the rotating shaft of the motor 48. The worm 50 is provided coaxially and integrally with a columnar rotation operation unit 50A extending to the side opposite to the motor 48. The rotation operation unit 50A is inserted into a through hole 54 formed in the case 30 and protrudes to the outside of the case 30. By the rotation operation of the rotation operation unit 50A, the rotation shafts of the worm 50 and the motor 48 can be rotated.

The worm wheel 52 is housed in the front portion of the case 30, and is meshed with the worm 50 in a posture with the vertical direction of the lid lock device 10 as the axial direction. The worm wheel 52 is arranged coaxially with the tubular portion 32C below the tubular portion 32C of the upper case 32. In the worm wheel 52, a shaft portion (not shown) formed on the lower surface is rotatably fitted in a circular bearing hole 56 formed in the bottom wall of the lower case 34. As a result, the worm wheel 52 is rotatably supported by the lower case 34. The worm wheel 52 is configured to rotate forward and reverse within a rotation range of 90 ° by rotating the motor 48 forward and reverse.

The lock shaft 46 is formed in a long columnar shape, and extends upward from the worm wheel 52 with the vertical direction of the lid lock device 10 as the axial direction. The lower end of the lock shaft 46 is coaxially fixed to the worm wheel 52. As a result, the lock shaft 46 is rotated integrally with the worm wheel 52. The lock shaft 46 has the unlocking positions shown in FIGS. 3, 4, 6, 8 to 10 and 12, as the worm wheel 52 is rotated in the forward and reverse directions in a rotation range of 90 °. 5. It is configured to rotate forward and backward with and from the locking position shown in FIGS. 7 and 11. Further, the lock shaft 46 can be rotated between the unlocking position and the locking position by the rotation operation of the rotation operation unit 50A described above.

At the upper end portion (tip portion) of the lock shaft 46, a head hammer 46A as a lock portion projecting from both sides in the radial direction of the lock shaft 46 is formed. The head hammer 46A has a substantially plate shape having a small axial dimension of the lock shaft 46, and has a substantially long rectangular shape (substantially long) when viewed from the axial direction of the lock shaft 46 (vertical direction of the lid lock device 10). It is formed in a circular shape).

An enlarged diameter portion 46B is formed in the vertical intermediate portion of the lock shaft 46. An O-ring 58 is attached to the enlarged diameter portion 46B. Further, the lock shaft 46 is formed with a pair of convex portions 46C protruding in the radial direction of the lock shaft 46 between the head hammer 46A and the enlarged diameter portion 46B. The O-ring 58 and the pair of convex portions 46C correspond to the push lifter 60.

The push lifter 60 includes an outer cylinder portion 62, a pair of upper and lower cap portions 64 and 66, a push rod (inner cylinder portion) 68, a rotor 70, and a compression coil spring (urging member) 72. .. The outer cylinder portion 62, the upper and lower cap portions 64 and 66, the push rod 68, and the rotor 70 are formed of, for example, resin.

The outer cylinder portion 62 is formed in a cylindrical shape with the vertical direction of the lid lock device 10 as the axial direction. The lower portion of the outer cylinder portion 62 is fitted inside the tubular portion 32C of the upper case 32. As a result, the outer cylinder portion 62 is supported by the case 30. The outer cylinder portion 62 extends upward from the case 30, and the lower side of the lock shaft 46 is housed inside the outer cylinder portion 62. The lock shaft 46 extends upward from the outer cylinder portion 62.

The upper and lower cap portions 64 and 66 are formed in a bottomed cylindrical shape having short axial dimensions. Circular through holes 74 and 76 are formed on the bottom walls of the upper and lower cap portions 64 and 66, respectively. The upper cap portion 64 is fitted (mounted) to the upper end portion of the outer cylinder portion 62, and is fixed to the outer cylinder portion 62 by means such as claw fitting. An O-ring 78 (see FIG. 9) is sandwiched between the upper cap portion 64 and the outer cylinder portion 62. The lower cap portion 66 is arranged in the case 30, is fitted (mounted) to the lower end portion of the outer cylinder portion 62, and is fixed to the outer cylinder portion 62 by means such as claw fitting. A ring-shaped shaft portion 52A formed on the upper surface of the worm wheel 52 is rotatably fitted in the through hole 76 formed in the lower cap portion 66. The worm wheel 52 is sandwiched between the lower cap portion 66 and the bottom wall of the lower case 34, and is rotatably supported by the lower cap portion 66 and the lower case 34.

The push rod 68 is formed in a cylindrical shape with the vertical direction of the lid lock device 10 as the axial direction. The lower side of the push rod 68 is inserted (fitted) inside the outer cylinder portion 62, and the push rod 68 is slidable in the axial direction with respect to the outer cylinder portion 62. The outer peripheral surface of the push rod 68 and the outer cylinder portion 62 are sealed by the above-mentioned O-ring 78. Further, the lock shaft 46 described above is coaxially inserted inside the push rod 68. The inner peripheral surface of the push rod 68 and the lock shaft 46 are sealed by the O-ring 58 described above.

As shown in FIGS. 7, 8, 10, and 11, a pair of grooves 68A (FIG. 7, FIG. 8, FIG. 10, FIG. (Not shown) is formed except for 11. These pair of grooves 68A correspond to the pair of convex portions 46C described above. A plurality of (here, four) protrusions 68B protruding outward in the radial direction of the push rod 68 are formed on the outer peripheral portion of the lower end portion of the push rod 68. The plurality of protrusions 68B are fitted into a plurality of (here, four) guide grooves (not shown) formed in the inner peripheral portion of the outer cylinder portion 62. The plurality of guide grooves extend in the axial direction of the outer cylinder portion 62, and the push rod 68 is restricted from rotating relative to the outer cylinder portion 62. The plurality of guide grooves are not formed up to the upper end portion of the outer cylinder portion 62, and the sliding range of the push rod 68 with respect to the outer cylinder portion 62 in the axial direction is shown in FIGS. 1, 2, 8, and 12. It is restricted between the protruding position shown and the retracted position shown in FIGS. 4-7, 10 and 11.

A rotor 70 is arranged in the outer cylinder portion 62 below the push rod 68. The rotor 70 is formed in a ring shape and is arranged coaxially with the push rod 68. A compression coil spring 72 is arranged below the rotor 70. The compression coil spring 72 is compressed between the bottom wall of the lower cap portion 66 and the rotor 70, and urges the rotor 70 upward. As a result, the upper surface of the rotor 70 is pressed against the lower surface of the push rod 68. A plurality of (here, four) protrusions 70A protruding outward in the radial direction of the rotor 70 are formed on the outer periphery of the rotor 70. The plurality of protrusions 70A are fitted into a plurality of (here, four) cam grooves (not shown) formed on the inner peripheral portion of the outer cylinder portion 62. The plurality of cam grooves extend in the axial direction of the outer cylinder portion 62.

The push lifter 60 having the above configuration functions as an opener for the fuel lid 16, and constitutes a known knock cam mechanism. In this push lifter 60, when the push rod 68 is pushed in the axial direction, the rotor 70 rotates while moving in the axial direction, and is positioned alternately at an axially ascending position and an axially descending position. It has become. As a result, each time the push rod 68 is pushed in the axial direction, the push rod 68 is alternately moved between the protruding position and the retracted position (protruding and retracting are alternately repeated). Since this knock cam mechanism is a known one applied to more knock-type writing tools than before, detailed description thereof will be omitted.

As shown in FIGS. 8 and 12, in the state where the push rod 68 is located at the protruding position (protruding state), the head hammer 46A is accommodated inside the upper portion of the push rod 68. The inner peripheral portion 68C of the upper portion of the push rod 68 is formed in a substantially long rectangular shape (substantially oval shape) similar to the head hammer 46A when viewed from the axial direction of the push rod 68. The longitudinal direction of the inner peripheral portion 68C and the longitudinal direction of the head hammer 46A are configured to coincide with each other in a state where the lock shaft 46 is located at the unlocked position. In the above-mentioned protruding state, the head hammer 46A engages (contacts) the inside (inner peripheral portion 68C) of the upper part of the push rod 68, so that the rotation of the lock shaft 46 is restricted. ..

On the other hand, as shown in FIGS. 6, 7, 10, and 11, in the state where the push rod 68 is located at the retracted position (retracted state), the head hammer 46A formed at the upper end of the lock shaft 46 is formed. It is configured to be exposed (protruded) above the upper end of the push rod 68. In this retracted state, the pair of convex portions 46C formed on the lock shaft 46 and the pair of grooves 68A formed on the push rod 68 are arranged at the same height in the vertical direction (axial direction of the push rod 68). To. As shown in FIG. 10, the pair of convex portions 46C are arranged at positions separated from the pair of grooves 68A in the circumferential direction when the lock shaft 46 is located at the unlocked position. Further, the pair of convex portions 46C enters the inside of the pair of grooves 68A when the lock shaft 46 is located at the locked position as shown in FIG. In this state, the push operation of the push rod 68 is regulated by the lock shaft 46 (the push operation becomes impossible).

In the lid lock device 10 having the above configuration, the lock shaft 46 and the push rod 68 are attached to the other end of the opening housing 14 in the longitudinal direction with the lock shaft 46 and the push rod 68 penetrating the other end in the longitudinal direction of the opening housing 14 (FIG. 1 and FIG. 2). The lid lock device 10 is arranged so that the axial direction of the lock shaft 46 and the push rod 68 and the thickness direction of the fuel lid 16 coincide with each other in a state where the fuel lid 16 is closed (see FIGS. 3 to 5). .. In the open state of the fuel lid 16 (see FIGS. 1 and 2), the lock shaft 46 is usually arranged at the unlocked position and the push rod 68 is arranged at the protruding position.

When the fuel lid 16 is closed, the push rod 68 is pushed to the other end of the fuel lid 16 in the longitudinal direction and pushed. As a result, the push rod 68 is moved from the protruding position to the retracted position. When the fuel lid 16 is closed (see FIGS. 3 to 5), the upper end portion of the lock shaft 46 is inserted into the lock hole 20. In this state, when the motor 48 is operated and the lock shaft 46 is rotated from the unlocked position to the locked position, the head hammer 46A engages with the edge of the lock hole 20 as shown in FIG. As a result, the fuel lid 16 is locked in the closed position. On the other hand, when the fuel lid 16 is opened, the motor 48 is operated to rotate the lock shaft 46 from the locked position to the unlocked position. Next, the push rod 68 is pushed by pressing the other end of the fuel lid 16 in the longitudinal direction toward the opening housing 14. As a result, the push rod 68 protrudes from the retracted position to the protruding position. This protrusion pushes open the fuel lid 16 and half-opens the fuel lid 16. After that, a finger or the like is hung on the gap between the half-opened fuel lid 16 and the opening housing 14, so that the fuel lid 16 is fully opened.

(Action and effect)
Next, the operation and effect of this embodiment will be described.

In the lid lock device 10 having the above configuration, the case 30 is attached to the opening housing 14 in which the fuel lid 16 is pivotally supported so as to be openable and closable. In this case 30, the motor 48 of the lock mechanism 40 is housed, and the push rod 68 of the push lifter 60 is supported. The lock mechanism 40 rotates the lock shaft 46 in the forward and reverse directions by the driving force of the motor 48, and locks and unlocks the fuel lid 16 by the head hammer 46A formed at the tip of the lock shaft 46. The push rod 68 is formed in a cylindrical shape, and each time it is pushed in the axial direction, the push rod 68 alternately repeats protruding and retracting. The protrusion of the push rod 68 pushes the fuel lid 16 open.

In this embodiment, the lock shaft 46 is rotated by the driving force of the motor 48 regardless of the push operation of the push rod 68, so that the push rod 68 is erroneously pushed into the retracted position with the fuel lid 16 open. Even in this case, the lock shaft 46 is not rotated to the locked position. Therefore, the fuel lid 16 can be closed without pushing the push rod 68 back to the protruding position. Further, since the lock shaft 46 is rotated independently of the push operation of the push rod 68 as described above, the fuel lid 16 can be opened even if the push lifter fails in the closed state of the fuel lid 16. Moreover, since the lock mechanism 40 and the push lifter 60 are not separately attached to the substrate, the attachment structure to the substrate is simplified.

Further, in the present embodiment, the push rod 68 formed in a cylindrical shape and the lock shaft 46 inserted inside the push rod 68 are coaxially arranged. As a result, the space for arranging the push rod 68 and the lock shaft 46 can be saved, and the design of the push rod 68 and the lock shaft 46 becomes easy.

Further, in the present embodiment, the lock mechanism 40 has a rotation operation unit 50A protruding to the outside of the case 30, and the lock shaft 46 can be rotated forward and reverse by the rotation operation of the rotation operation unit 50A. .. Thereby, for example, even if the motor 48 of the lock mechanism 40 does not operate due to a trouble in the electric system, the fuel lid 16 can be locked and unlocked.

Further, in the present embodiment, the lock mechanism 40 has a worm 50 that is integrally rotated with the rotating shaft of the motor 48, and a fan-shaped worm wheel 52 that is meshed with the worm 50 and is rotated integrally with the lock shaft 46. And have. In this way, by using the worm and the fan-shaped worm wheel 52, the lock mechanism 40 can be made into a simple and compact configuration.

Further, according to the present embodiment, in the protruding state of the push rod 68, that is, in the open state of the fuel lid 16, the head hammer 46A of the lock shaft 46 is housed inside the push rod 68. This makes it possible to prevent the head hammer 46A from being damaged.

Further, according to the present embodiment, in the protruding state of the push rod 68, the head hammer 46A of the lock shaft 46 engages with the inside of the push rod 68, so that the rotation of the lock shaft 46 is restricted. As a result, even if the motor 48 is erroneously operated with the push rod 68 protruding, it is possible to prevent the lock shaft 46 from being inadvertently rotated.

Further, according to the present embodiment, the fuel lid 16 is closed and locked by the lock shaft 46, that is, the push rod 68 is located at the retracted position and the lock shaft 46 is located at the locked position (FIG. 7). And FIG. 11), the convex portion 46C formed on the lock shaft 46 enters the groove 68A formed inside the push rod 68. As a result, the push rod 68 of the push lifter 60 becomes inoperable to push, so that careless operation of the push lifter 60 can be prevented.

<Modification example>
Next, the lid lock device 100 according to the modified example of the above embodiment will be described with reference to FIGS. 13 and 14. In FIGS. 13 and 14, the same reference numerals are given to the same configurations as those of the lid lock device 10. In the push lifter 60 of the lid lock device 100, the upper and lower cap portions 64 and 66 according to the above embodiment are omitted, and the outer cylinder portion 62 is integrally formed with the upper case 32.

Further, the lid lock device 100 includes a worm wheel 102 different from the worm wheel 52 according to the above embodiment. The worm wheel 102 is formed in a bottomed cylindrical shape with an opening on the upper side. A bottomed cylindrical wheel support portion 34A having an open upper side is formed in the front portion of the lower case 34 corresponding to the worm wheel 102, and the worm wheel 102 is rotatably fitted in the wheel support portion 34. It fits. The worm wheel 102 is regulated to be displaced in the axial direction by the lower case 34 and the upper case 32. A flange portion 102A is formed at the upper end portion of the worm wheel 102, and an external tooth 104 formed on a part of the flange portion 102A is meshed with the worm 50. As a result, the worm 50 is rotated in the forward and reverse directions by the motor 48, so that the worm wheel 102 is rotated in the forward and reverse directions within a rotation range of 90 °.

Inside the worm wheel 102, the lower part of the lock shaft 46, the lower part of the push rod 68, the rotor 70, and the compression coil spring 72 are coaxially accommodated. The lock shaft 46 penetrates the push rod 68 and the rotor 70, and the lower end portion of the lock shaft 46 is fixed to the bottom wall (not shown) of the worm wheel 102. As a result, the lock shaft 46 and the worm wheel 102 rotate coaxially and integrally. The compression coil spring 72 is compressed between the rotor 70 and the bottom wall of the worm wheel 102. The worm wheel 102 has the same function as the cap portion 66 according to the above embodiment.

In this lid lock device 100, the upper and lower cap portions 64 and 66 according to the above embodiment are omitted, and the outer cylinder portion 62 is integrally formed with the upper case 32. Therefore, the lid lock device according to the above embodiment. Compared with 10, the number of parts is reduced and the overall configuration is downsized.

<Supplementary explanation of the embodiment>
In the above embodiment, the lock shaft 46 and the push rod 68 are arranged coaxially, but the present invention is not limited to this, and the axis of the lock shaft 46 and the axis of the push rod 68 are arranged so as to be offset (parallel). It may be configured (arranged in).

Further, in the above embodiment, the push rod 68 is formed in a cylindrical shape, but the present invention is not limited to this, and the push rod 68 may be a cylindrical shape or a substantially cylindrical shape, and its cross-sectional shape can be appropriately changed. be. That is, the cross-sectional shape of the push rod 68 may be, for example, a rectangle or a hexagon, or may be a C-shape or a U-shape.

Further, in the above embodiment, the push lifter 60 is configured to be a knock cam type, but the present invention is not limited to this, and the push lifter 60 may be configured to be a heart cam type.

Further, in the above embodiment, the motor 48 is used as the drive source, but the present invention is not limited to this. The drive source may be, for example, a solenoid (solenoid valve). Further, the motor as a drive source includes a servomotor.

Further, in the above embodiment, the case where the lid lock device 10 is used as a component of the fuel lid assembly 12 has been described, but the present invention is not limited to this. The lid lock device according to the present invention can also be applied as a lock device for locking a lid (lid) provided in an electric appliance such as a washing machine.

In addition, the present invention can be implemented with various modifications without departing from the gist thereof. Moreover, it goes without saying that the scope of rights of the present invention is not limited to the above-described embodiment.

10 Lid lock device 14 Opening housing (base)
16 Fuel lid (lid)
30 Case 40 Lock mechanism 46 Lock shaft 46A Head hammer (lock part)
46C Convex 48 Motor (Drive source)
50 Warm 50A Rotation operation part 52 Warm wheel 60 Push lifter 68 Push rod 68A Groove

Claims (7)

A case where the lid can be attached to a pivotally supported substrate that can be opened and closed, and
A lock mechanism that rotates the lock shaft in the forward and reverse directions by the driving force of the drive source housed in the case and locks and unlocks the lid by the lock portion formed at the tip of the lock shaft.
It has a push rod that is formed in a cylindrical shape and is supported by the case and has the lock shaft inserted inside, and each time the push rod is pushed in the axial direction, protrusion and retract are alternately repeated. , A push lifter that pushes open the lid by the protrusion of the push rod,
Equipped with
The lock shaft is a lid lock device that is rotated forward and reverse by the driving force of the drive source regardless of the push operation of the push rod . The lid lock device according to claim 1, wherein the lock shaft and the push rod are arranged coaxially. The lid according to claim 1 or 2, wherein the lock mechanism has a rotation operation unit projecting to the outside of the case, and the lock shaft can be rotated forward and reverse by the rotation operation of the rotation operation unit. Lock device. Any one of claims 1 to 3, wherein the locking mechanism comprises a worm rotated by the drive source and a fan-shaped worm wheel that is meshed with the worm and rotated integrally with the lock shaft. The lid lock device described in the section. The lid lock according to any one of claims 1 to 4, wherein in the protruding state of the push rod, the lock portion engages with the inside of the push rod to regulate the rotation of the lock shaft. Device. In a state where the lid is closed and locked by the lock shaft, the convex portion formed on the lock shaft enters the groove formed inside the push rod, so that the push rod cannot be pushed. The lid lock device according to any one of claims 1 to 5. The lid lock device according to any one of claims 1 to 6, wherein the lock portion is housed inside the push rod in the protruding state of the push rod.

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