JP2010094250A - Lid locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniaturized lid locking device with a lid locking mechanism integrated with a lock detecting part. <P>SOLUTION: The lid locking device includes a lid 3 journaled upward openably/closably, a lid opening/closing detecting mechanism 7 at one end in front of the lid 3, and the lid locking mechanism 10 at the other end. The lid locking mechanism 10 includes: a device casing composed of upper and lower cases; an electromagnet 70 stored within the device casing; a movable iron core 73 which can reciprocate to be attracted to the electromagnet 70; a lid locking rod 40 which can project as operatively connected with the movable iron core 73; a manual releasing rod 63 operatively connected with the lid locking rod 40; and a lid operating lever 84 operatively connected with a lid 8. The lid operating lever 84 is coupled with the manual releasing rod 63 to detect the opening/closing of the lid 8. With this structure, the lid 8 of the washing machine is normally closed and the locking function for safety is mechanically detected, so that the miniaturized, simple and secure fail-safe function can be provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lid (door) locking device that electromagnetically locks opening and closing of a washing machine lid.

  Conventionally, a lid lock device of this type of washing machine slides a sliding member by engaging the hook of the lid by opening and closing the lid, and energizes the switch means by the movement of the sliding member. The structure which hold | maintains a sliding member with a holding means in the state which operates a solenoid by this and does not remove a hook has been proposed (for example, refer to patent documents 1).

  Further, in the case of a device provided with a lid lock device and a lid open / close detection, as means for preventing erroneous operation between the lid open / close operation and the lid lock operation, a lid open / close detection unit, a lid lock solenoid, and a lid lock detection unit The three functions are arranged in the same housing (for example, see Patent Document 2).

  FIG. 7 is a partially cutaway perspective view showing the relationship between the lid switch device and the lid of the lid lock device of the conventional washing machine described in Patent Document 1, and FIG. 8 shows (a) the same lid. It is the front view of a switch apparatus, and (b) sectional side view.

  A lid 209 disposed substantially vertically in FIG. 7 is disposed on an apparatus main body (not shown) so as to be freely opened and closed, and a hook 223 is rotatably mounted in the direction of arrow A via a lid opening / closing lever 224. The claw portion 223a is locked by a sliding member 226 (described later) inside a lid switch 225 provided in the device main body, thereby locking the lid 209 in the closed state.

  8, the configuration of the lid switch 225 is such that the sliding member 226 is movable in the left-right direction in FIG. 8A by a spring 227, and the hook 223 of the lid 209 is engaged when the lid 209 is closed. Slide to move. Due to the movement of the sliding member 226, the operating member 228 is rotated to close the switch means 229. The switch unit 229 is connected to the solenoid 230, and a part of the holding unit 231 coupled to the solenoid 230 is fitted to a part of the sliding member 226, and the sliding member 226 is locked and the lid 209 is closed. This is a configuration frequently used in a drum-type washing machine having a front opening lid that is locked in a state.

  FIG. 9 is an exploded perspective view of a washing machine having a lid lock device for a conventional washing machine described in Patent Document 2. A magnet 123 attached to the lid 119 is used to open a lid such as a reed switch when the lid is opened or closed. The open / closed state of the lid 119 is detected by approaching and leaving the open / close detection unit 130.

  On the other hand, when the lid 119 is in the closed state, the lid lock solenoid 131 locks the lid 119 so that the lid 119 cannot be opened by the operation of the lid lock solenoid 131, thereby configuring the lid lock detecting unit 132 that detects whether the lid 119 is correctly locked.

  The signals of the lid detection unit 130 and the lid lock detection unit 132 are input to the control unit 135 through the signal line 134, and after confirming the locked state, the process proceeds to the next step.

Here, if the lid opening / closing detection unit 130 and the lid locking solenoid 131 are configured at spatially separated positions, malfunction may occur due to deformation of the lid or the like. The solenoid 131 and the lid lock detection unit 132 are both arranged in the same casing, and the lid lock unit 133 is configured.
JP-A-10-272293 JP 2003-210893 A

  However, in the configuration of the cited prior art document 1, the door opening / closing operation of the washing machine box body always operates the lid opening / closing lever 224 so that the claw portion 223a of the hook 223 is connected to the sliding member 226. I had to release the lock. In the case where the lid is constructed in front of the main body and operates to open forward, such as a drum type washing machine, the operation of pressing the hook and releasing the lock does not place a heavy burden on the user, but the vertical washing machine That is, in the type that lifts the lid upward on the top surface of the main body and opens and closes it, after pressing the hook from the top to release the lock, the lid must be lifted, and the operation will be increased for the user. In addition, the arrangement of the hook mechanism as described above on the upper surface of the product has a problem in that foreign matter adhering to the detergent or clothing from the upper side adheres to the sliding portion and causes malfunction.

  Further, in the configuration of the above-described conventional Patent Document 2, the configuration of pressing the hook to release the locking is unnecessary, and the problem of the Patent Document 1 is solved, but the lid opening / closing detection unit, Arranging the lid lock solenoid and the lid lock detector in the same casing to form the lid lock section has a problem that the casing itself becomes complicated.

  In particular, the combination of the lid-side magnet 123 and the lid opening / closing detection unit 130 such as a reed switch, and the combination of the lid lock solenoid 131 and the lid lock detection unit 132 are detection functions that require accuracy. Etc. are desired to be performed independently, and the lid open / close detection unit 130 and the lid lock detection unit 132 detect electrical signals, and thus there is a risk of erroneous detection.

  In addition, since this type of lid lock mechanism is installed in front of the lid of the washing machine, there is a risk that detergents and clothing waste will intrude constantly during use, and repair inspection and replacement of parts are compared to other parts. There are relatively many opportunities. Therefore, since they are arranged in the same housing, there is also a problem that it is an excessive service activity to treat even the lid opening / closing detection unit with few opportunities for repair and replacement.

  The present invention solves the above-mentioned conventional problems. The lid lock mechanism and the lid lock detector are integrated, and the lid lock rod is inserted / removed (reciprocating sliding) depending on the position of the lid operation lever when the lid is closed. It is an object of the present invention to provide a small-sized washing machine lid (door) locking device that can easily detect and lock the door of a washing machine mechanically with a fail-safe function.

  In order to achieve the above object, a lid (door) locking device for a washing machine according to the present invention includes a lid that is pivotably supported upward and downward, a magnet attached to one end of the lid, and a lead at a corresponding position. A lid opening / closing detection mechanism such as a switch; a lid hook integrally configured at the other front end of the lid; and a lid locking mechanism for attaching and detaching a lid lock rod to the lid hook formed on the upper frame. The lock mechanism forms a device box with a lower case and an upper case fitted with the lower case, an electromagnet housed in the device box, and a reciprocating movable iron core attracted by the electromagnet A lid lock rod capable of protruding operation linked to the movable iron core, a manual release rod linked to the lid lock rod, and a lid operation lever linked to the lid hook of the lid body, A manual release rod is connected to detect the opening and closing of the lid. It is intended.

  As a result, the lid of the washing machine is normally closed and the function of operating the lock function for safety is mechanically detected, and then the washing machine is detected by the presence or absence of a signal from the lid open / close detection function that is separately configured. Since the subsequent steps are controlled, a simple and reliable fail-safe function can be obtained.

  The lid locking device of the present invention can provide a lid locking mechanism that is free from erroneous detection when the washing machine lid is opened and closed.

  According to a first aspect of the present invention, there is provided a lid that is pivotably supported above the upper frame disposed on the upper surface of the washing machine main body, a magnet attached to one end of the lid, and a lead disposed corresponding to the magnet. A lid opening / closing detection mechanism such as a switch; a lid hook integrally configured at the other front end of the lid; and a lid locking mechanism for attaching and detaching a lid lock rod to the lid hook formed on the upper frame. The lock mechanism forms a device box with a lower case and an upper case fitted with the lower case, an electromagnet housed in the device box, and a reciprocating movable iron core attracted by the electromagnet A lid lock rod capable of protruding operation linked to the movable iron core, a manual release rod linked to the lid lock rod, and a lid operation lever linked to the lid hook of the lid body, A manual release rod is connected to check the opening and closing of the lid. By the, it is possible to obtain a secure lid lock mechanism in a compact configuration.

  In the second aspect of the invention, in particular, the lower case of the first aspect of the invention forms a support shaft, and a lid lock rod that can slide on the support shaft as a fulcrum, and the lower case and the lid lock rod are always bulleted. A compression coil spring that is energized, a rotating plate that is movable around a support shaft, one of which is hooked on the lid lock rod and the other of which is hooked on the operation plate, and a manual release rod that is linked to the movable iron core And an operation plate having a lock pin guide groove, a lock pin that can be opened and closed by pressing the compression coil spring, and can be locked or released at a fixed position of the lock pin guide groove of the operation plate, and the lock pin is always A structure in which the lid is opened and closed by a leaf spring biased to the lock pin guide groove, and the lock pin is released from a predetermined position of the lock pin guide groove by operating a manual release rod formed integrally with the operation plate. By operating the manual release bar, Check the operation of separately the locking device without having to energize the stone becomes possible, it is possible to improve productivity.

  According to a third aspect of the present invention, in particular, the lid operating lever of the first or second aspect of the invention is based on a suction operation of the movable iron core while the tip of the lid operating lever is pressed from above by a lid hook integrally formed with the lid. When the lid lock bar can be protruded and locked on the lid hook, the lid is locked, and the manual release bar formed integrally with the operation plate is used as a stopper for the lid lever. Therefore, if the lid lock rod is not allowed to protrude, the tip of the lid hook presses the lid operation lever, and the manual release rod abuts against the stopper unless the lid is pushed down to the specified size. Since it has a mechanical fail-safe function that prevents the lid lock bar from protruding, the risk of false detection is eliminated.

  In the fourth aspect of the invention, the stopper of the lid operating lever of the first to third aspects of the invention is formed on the upper surface of the manual release rod side with an inclined surface equivalent to the angle at which the lid operating lever operates when the lid is locked. By making it horizontal, the sliding operation of the manual release rod when releasing the lid from the locked state of the lid becomes smooth, and no malfunction occurs.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external view of a washing machine having a lid locking device according to an embodiment of the present invention, FIG. 2 is a front view of the lid locking device, and FIG. FIG. 4 is a plan view of the lid locking device taken along the line GG in FIG. 3 and FIG. 5 is an operation diagram of the lid operating lever of the lid locking device. These are the structure arrow views for operation | movement explanation of the same lid locking device.

  As shown in FIG. 1, the washing machine constituting the lid lock device of the present invention has an upper frame 2 above the washing machine body 1 with the rotation axis of the washing and dewatering tub 4 included in the washing machine body 1 in the vertical direction. It is a vertical washing machine which constitutes lid 3 which can be opened and closed freely on the upper surface.

  A cover body 3 pivotally supported on the upper frame 2 so as to be freely opened and closed is provided. A magnet 5 attached to one end of the front of the cover body 3 and a reed switch 6 disposed in front of the upper frame corresponding to the magnet 5 A lid opening / closing detection mechanism 7, a lid hook 8 integrally formed at the other front end of the lid body 3, and a lid locking mechanism for attaching and detaching the lid lock rod 40 corresponding to the lid hook 8 formed on the upper frame 2. Prepare.

  In the front view of FIG. 2, the lid lock mechanism 10 is formed in a box shape with an upper case 30 fitted to the lower case 20, and is reciprocated in the left direction in FIG. 2. An interlocking manual release rod 63, a lid operation lever 84 that is rotatable counterclockwise (up to the position indicated by F) around the operation lever rotation shaft 83 formed on the outer bottom surface of the lower case 20, and manual release A stopper 85 integrally formed with the lid operating lever 84 close to the rod 63 is configured.

  In the plan view of FIG. 3, the lower case 20 having the support shaft 21 includes an electromagnet 70 having a movable iron core 73, a lid lock rod 40 that can slide back and forth around the support shaft 21, and the support shaft 21 as the center of rotation. And the operation plate 60 which is engaged with the rotation plate 50 and is connected to the movable iron core 73. Therefore, when electric power is input to the electromagnet 70 and the movable iron core 73 is attracted, the operation plate 60 is transmitted to the leftward protruding operation of the lid lock bar 40 by the rightward movement operation in FIG.

  The lid lock bar 40 is always urged by the compression coil spring 22 in the right direction in FIG.

  The kick spring 62, whose upper end 62a is cantilevered by the lid lock rod 40, is mounted in a free state on a shaft 86 formed integrally with the lower case 20 when the movable iron core 73 is not suctioned, and does not generate any pressing force. In other words, when the lid lock rod 40 protrudes to the left in the figure, the upper end 62a urges the lid lock rod 40 to the right, and at the same time the lower end 62b presses the suction confirmation converter 82 to operate the confirmation switch 80. The electrical circuit is switched to open / close, and an electric signal indicating that the lid lock bar 40 has completed the projecting operation to the operating state is generated, so that, for example, the switching is switched from opening to closing. The electromagnet 70 is demagnetized and controlled by the control device by being transmitted to (not shown), maintains the locked state, and then the subsequent process of the washing machine with or without a signal from the lid open / close detection function that is separately configured. The To your.

  In FIG. 4, the lid operating lever 84 is urged clockwise on the outer bottom surface of the lower case 20 by an operating lever spring 91 around the operating lever rotating shaft 83 formed on the outer bottom surface of the lower case 20. .

  When the lid 3 is closed, the tip 8a of the lid hook 8 presses the lid operating lever 84 from above and overcomes the urging force of the operating lever spring 91 to rotate downward (counterclockwise). The stopper 85 integrally formed with the lever 84 also moves downward, the manual release bar 63 becomes movable in the right direction in FIG. 4, and the lid lock bar 40 can be inserted into the opening 8b formed at the tip of the lid hook 8 to lock the lid. Function works.

  In the operation diagram of FIG. 5, when the lid operating lever 84 is pressed to the position F, the manual release rod 63 can move to the position 63 a as shown in the figure without contacting the stopper 85. At this time, the upper surface of the stopper 85 is substantially horizontal, and when the displacement angle when the lid operating lever 84 is pressed to the position F is N, the upper surface of the stopper 85 is previously provided with an inclined surface 85a corresponding to the angle N. By forming it, it becomes a horizontal state. Therefore, when the movable iron core 73 is moved from the position 63a during suction by the electromagnet 70 in order to store the lid lock bar 40, it slides smoothly when the lower end of the manual release bar 63 slides on the upper surface of the stopper 85. Can move.

  In the arrow view of FIG. 6, the mechanism by which the movable iron core 73 is attracted | sucked by the electromagnet 70 and the lid | rock lock stick | rod 40 is transmitted to protrusion operation | movement is demonstrated.

  When the movable iron core 73 is attracted, the operation plate 60 connected by the operation plate pin 88 operates on the electromagnet 70 side (indicated by an arrow K), and a manual release rod 63 extending downward on the lower surface of the operation plate 60. As a result, the rotating plate 50 rotates counterclockwise (indicated by the arrow M) about the support shaft 21 as the center of rotation.

  The arm 50a on the opposite side to the manual release rod 63 side of the rotating plate 50 operates in the opposite direction, that is, the operation opposite to the suction direction of the movable iron core 73, and the lid lock rod connected to the opposite arm 50a. The lock rod base 90, that is, the lid lock rod 40 is projected through the operation plate pin 89 on the lower surface side of the lock rod base 90 integrally formed. The lock rod base 90 is always elastically biased toward the electromagnet 70 by the compression coil spring 22 at the spring support portion 90a.

  At this time, when the manual release rod 63 operates in the direction of the arrow K, the lid operation lever 84 is not pushed down to the predetermined position (F shown in FIG. 2) by the lid hook 8 of the lid body 3. The stopper 85 formed integrally with the stopper prevents the operation and the lid lock is not completed.

  The operation plate 60 is substantially U-shaped in a plane, interlocked with the movable iron core 73 by an operation plate pin 88 at the center, a manual release rod 63 at one end of the U shape, and a lock pin guiding groove 61 at the other end. The lock pin guide groove 61 is inserted into the lock pin guide groove 61, which is cantilevered by the upper case 30, pressed against the lock pin guide groove 61 by the leaf spring 92, and freely swingable. The lock 61 can be locked or released at the fixed position of the groove 61 and can be opened from the fixed position of the lock pin guide groove 61 of the lock pin 31 by operating the manual release rod 63.

  In this embodiment, the operation of the lid lock bar 40 is transmitted from the suction confirmation converter 82 to the confirmation switch 80 by the kick spring 62. As an alternative to the suction confirmation converter 82, for example, an operation plate It is also possible to incorporate a magnet at 60 or the like and detect the suction confirmation of the movable iron core 73 with a magnetic sensing element.

  The operation and action of the lid lock device for a washing machine configured as described above will be described below.

  First, when the electromagnet 70 is excited and the movable iron core 73 is attracted, the operation plate 60 slides, the rotation plate 50 rotates, the lid lock bar 40 protrudes from the lower case 20, and the compression coil spring 22 is compressed. The lid lock rod 40 locks the lid hook portion of the door body 3 of the washing machine.

  At this time, the lock pin 31 is locked at a fixed position of the lock pin guiding groove 61 so that the lid lock rod 40 cannot be inserted and removed, and the compression coil spring 22 presses the suction confirmation converter 82 by the sliding of the operation plate 60. Then, for example, the switch is changed from open to closed, and the closed switch state is transmitted to the control device or the like of the washing machine, whereby the electromagnet 70 is demagnetized from the control device or the like, but the lid lock state is maintained.

  Next, when the electromagnet 70 is energized again, the lock pin 31 is released from the lock pin guide groove 61 and the cover lock rod 40 is slidably accommodated in the lower case 20 by the elastic force of the compressed compression spring 22. Then, the compression coil spring 22 is separated from the suction confirmation converter 82 and the confirmation switch 80, is switched from closed to open, and the open state is transmitted to the control device or the like, so that the electromagnet is demagnetized from the control device or the like, and the lid lock Is resolved. Further, by opening the lock pin guide groove 61 of the lock pin 31 from a fixed position by operating the manual release rod 63, the lid lock rod 40 is slidably housed in the lower case 20 by the elastic force of the compression coil spring 22. The lid lock is eliminated.

  Further, a pivotable lid operation lever 84 urged to the outer bottom surface of the lower case 20 by an operation lever spring 91 around an operation lever rotation shaft 83 formed on the outer bottom surface of the lower case 20, and a manual release rod 63. When the lid 3 is closed, the front end 8a of the lid hook 8 presses the lid operation lever 84 from above and rotates downward. Then, the stopper 85 formed integrally with the lid operating lever 84 also moves downward, the manual release bar 63 becomes movable, can be inserted into the opening 8b formed at the tip of the lid hook 8, and the locking function of the lid body 3 works. Is.

  In this embodiment, the operation of the lid lock rod 40 is transmitted to the suction confirmation converter 82 by the kick spring 62. However, as an alternative to the suction confirmation converter 82, for example, a magnet is attached to the operation plate 60 or the like. It is also possible to detect the suction confirmation of the movable iron core 73 with a magnetic sensing element.

  Further, if the tip of the lid hook 8 presses the lid operation lever 84 and does not push down to a predetermined dimension (the position F in FIG. 2), the manual release bar 63 comes into contact with the stopper 85 and the lid lock bar 40 projects. Since it has a mechanical fail-safe function that cannot be performed, the risk of false detection is eliminated.

  In addition, when releasing the cover lock from the suction holding state, the lower end of the manual release bar 63 is smoothly slid by the inclined surface 85a of the stopper 85, so that a reliable return operation is possible.

  As described above, the lid locking device according to the present invention can be reliably detected without causing a malfunction, and thus can be applied to an apparatus having a lid and a lid locking mechanism.

1 is an external view of a washing machine having a lid lock device according to Embodiment 1 of the present invention. Front view of the lid lock device Top view with the upper case removed (viewed from the direction of FIG. 2H) GG section sectional view of the lid locking device of FIG. Operation diagram of the lid operation lever of the lid lock device Structural arrow view for explaining the operation of the lid locking device A partially cutaway perspective view showing the relationship between a lid switch device and a lid of a lid lock device of a conventional washing machine (A) Front view of the lid switch device, (b) Side sectional view of the lid switch device An exploded perspective view of a washing machine having a lid lock device of another conventional washing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing machine main body 2 Upper frame body 3 Cover body 5 Magnet 6 Reed switch 7 Cover opening / closing detection mechanism 8 Cover hook 10 Cover lock mechanism 20 Lower case 21 Support shaft 22 Compression coil spring 30 Upper case 31 Lock pin 40 Cover lock rod 50 Rotation Plate 60 Operation plate 61 Lock pin guide groove 63 Manual release rod 70 Electromagnet 73 Movable iron core 82 Suction confirmation converter 84 Lid operation lever 85a Inclined surface 92 Leaf spring

Claims (4)

A lid that is pivotably supported above the upper frame disposed on the upper surface of the washing machine main body, a magnet attached to one end of the lid, and a lid switch detection such as a reed switch arranged corresponding to the magnet. A lid hook integrated with the other end of the front of the lid, and a lid lock mechanism for attaching and detaching a lid lock rod to the lid hook formed on the upper frame, the lid lock mechanism comprising a lower case And an upper case that fits into the lower case constitutes an apparatus box, an electromagnet housed in the apparatus box, a movable iron core that can be reciprocated by the electromagnet, and the movable iron core Provided with a lid lock rod capable of protruding operation linked to the lid, a manual release rod linked to the lid lock rod, and a lid operation lever linked to the lid hook of the lid body, and the lid operation lever and the manual release rod are connected And a lid lock that detects opening and closing of the lid Location. The lower case is integrally formed with a support shaft, a lid lock rod that can slide on the support shaft as a fulcrum, and a compression coil spring that constantly urges and urges the lower case and the lid lock rod. A rotating plate that is movable on the support shaft, which is hooked on the lid lock rod and the other is hooked on the operation plate, and an operation plate having a manual release rod and a lock pin guide groove linked to the movable iron core; , A lock pin that can be opened and closed by pressing the compression coil spring, and can be locked or released at a fixed position of the lock pin guide groove of the operation plate, and a plate that constantly urges the lock pin to the lock pin guide groove The lid locking device according to claim 1, wherein the lid is opened and closed with a spring, and the lock pin is released from a predetermined position of the lock pin guide groove by an operation of a manual release rod formed integrally with the operation plate. The lid operation lever is attached to the lid hook by allowing the lid lock rod to protrude by the suction operation of the movable iron core while the tip of the lid operation lever is pressed from above by the lid hook formed integrally with the lid body. When the lid is locked and the tip of the lid operating lever is not pressed from above, the manual release bar integrally formed on the operation plate is restricted by the lid operating lever stopper, and the lid locking bar cannot be projected. The lid locking device according to claim 1 or 2 of composition. The stopper of the lid operating lever is configured such that an inclined surface equivalent to an angle at which the lid operating lever operates when the lid is locked is formed on the upper surface on the manual release rod side and is substantially horizontal when the lid is locked. The lid locking device according to claim 1.

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