JP4178611B2 - Washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine, and more particularly to a lock mechanism that locks a lid of a washing machine so that it cannot be opened during a washing process or a dehydrating process.
[0002]
[Prior art]
The conventional lock mechanism has a configuration in which the entire lid lock unit is accommodated in the unit frame, and the lock claw of the lid lock lever protrudes from the unit frame. For this reason, there was a problem that it became difficult to attach a lid lock unit to a washing machine because a unit frame became large.
[0003]
Recently, there is a strong tendency to demand ease of use by keeping the length of the washing machine low, and when trying to keep the height of the top cover including the entire lid lock unit as low as possible, the lid lock unit must be made small overall. Don't be.
[0004]
[Problems to be solved by the invention]
In view of the above-described problems, the present invention aims to reduce the size of the lid lock unit and arrange it on a top cover having a low height.
[0005]
In addition, the lid lock state is not easily released due to an impact or the like.
[0006]
[Means for Solving the Problems]
The present invention includes an outer frame of a washing machine, a top cover provided on an upper portion of the outer frame, an openable / closable lid provided on the top cover, a lid lock unit provided on the top cover, and the lid lock unit. And a lid lock lever that engages and disengages from the lid, and includes a side and a lid lock solenoid and a lid lock detection switch in the unit frame of the lid lock unit, and moves in and out of the lid lock solenoid. It has a jar, a pull-out spring that urges the plunger in the protruding direction, a stopper receiving piece on the distal end side of the plunger, a connecting convex portion on the stopper receiving piece, and a connecting convex portion on the distal end side of the plunger The connecting hole is formed large so that the connecting convex part can move to the extent of play, and the above-mentioned connecting hole is swung to the outside of the unit frame. The lid lock lever is provided with a stopper piece that prevents the stopper receiving piece from protruding, and conversely the hand that goes with the stopper receiving piece is blocked, and the lid lock lever engages the lid. In the state of the lid lock that closes the lid, the stopper receiving piece protrudes to prevent the stopper piece from going, and the lid lock state is maintained. The stopper receiving piece is blocked by a stopper piece.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0008]
FIG. 1 is a longitudinal sectional view of a fully automatic washing machine showing an embodiment of the present invention. FIG. 2 is a plan view of the fully automatic washing machine. As shown in FIGS. 1 and 2, an outer tub 2 is suspended inside the outer frame 1 by a suspension rod 3 and a vibration isolation mechanism 4. A washing / dehydrating tub 5 is rotatably provided inside the outer tub 2. A stirring blade 6 is provided at the inner bottom of the washing and dewatering tub 5 so as to be rotatable in the reverse direction.
[0009]
A rotation switching mechanism 7 and a motor 8 are provided on the lower surface of the outer tub 2. A belt 11 is hung on the pulley 9 of the switching mechanism 7 and the pulley 10 of the motor 8. The rotation of the motor 8 is transmitted to the stirring blade 6 by the switching mechanism 7 or to the stirring blade 6 and the washing and dewatering tub 5.
[0010]
A top cover 12 is provided on the top of the outer frame 1. A water supply valve 13 is provided below the top cover 12, and water is connected to the water supply valve 13. The tap water is poured into the washing / dehydrating tank 5 through the water supply valve 13.
[0011]
A drainage channel is connected to the bottom of the outer tub 2, and a drainage valve 14 is provided in the drainage channel. A lid lock unit 15 is provided inside the front side of the top cover 12. The lid lock unit 15 locks the double-folded lid 16 provided on the top cover 12. A garment input port 17 is shown by a dotted line at the lid 16, and the lid 16 closes the input port 17.
[0012]
The lid 16 is placed in a closed state except for putting in and taking out clothes. During the dehydration operation, of course, during the washing operation and during the supply / discharge, the lid 16 is closed and is locked by the lid lock unit 15 so that the lid 16 cannot be opened.
[0013]
An operation panel 18 is provided on the front upper surface of the top cover 12. The operation panel 18 is provided with various input switches.
[0014]
FIG. 3 shows a rough overall circuit of the fully automatic washing machine.
[0015]
As shown in FIG. 3, an FLS circuit 21 (drive circuit), a power supply circuit 22, a start switch 23, a lid lock release switch 24, and a lid lock detection switch 25 are connected to an operation control circuit 20 including a microcomputer. A motor 8, a drain valve 14, a water supply valve 13, and a lid lock solenoid 26 are connected between the FLS circuit 21 and the AC power source.
[0016]
Next, an embodiment of the lid lock unit 15 which is a main part of the present invention will be described with reference to FIGS.
[0017]
As shown in FIGS. 4, 5 and 6, the lid lock unit 15 is provided inside the front side of the top cover 12. 4 shows a state in which the lid 16 is not closed, and FIGS. 5 and 6 show a state in which the lid 16 is closed.
[0018]
The lid lock unit 15 has a unit frame 30. The unit frame 30 is made of synthetic resin. It is strong because it uses polypropylene with glass fiber.
[0019]
The unit frame 30 includes the lid lock solenoid 26 and the lid lock detection switch 25 described above. The lid lock solenoid 26 includes a yoke 31 and a plunger 32.
[0020]
A lid lock lever 40 is rotatably attached to the unit frame 30.
[0021]
The lid lock lever 40 includes a lock lever main body 41, a stopper 42, and a lid push-up member 43.
[0022]
The lock lever main body 41 and the stopper 42 are strong because they are made of a synthetic resin of polypropylene containing glass fiber. The lid push-up member 43 is strong because it is made of Duracon (trade name) synthetic resin.
[0023]
As shown in FIG. 17, the lock lever main body 41 is rotatably supported by support shafts 46 and 47 of support legs 44 and 45 provided at the lower part of the unit frame 30. The stopper 42 is also rotatably supported on the support shafts 46 and 47.
[0024]
22, 23, and 24, the lock lever main body 41 includes two pillar portions 48 and 49, mounting feet 50 and 51, bearing holes 52 and 53 formed in the mounting feet 50 and 51, and lock claws. 54, an enclosure guide 55, and a top plate 56.
[0025]
As shown in FIGS. 25 and 26, the stopper 42 includes a pillar portion 57, mounting feet 58 and 59, bearing holes 60 and 61 formed in the mounting feet 58 and 59, a stopper piece 62, a spring stopper piece 63, and a guide piece 64. Have
[0026]
The guide piece 64 has a spring receiving seat 65, a spring retaining pin 66, and a guide lateral collar 67.
[0027]
The lock lever main body 41 is combined with the stopper 42.
[0028]
The column portion 57 of the stopper 42 is placed between both the column portions 48 and 49 of the lock lever main body 41, the guide piece 64 is placed in the enclosure guide 55, and the mounting feet 58 and 59 are placed between the mounting feet 50 and 51. Unioned. By doing so, the bearing holes 52 and 53 of the lock lever main body 41 and the bearing holes 60 and 61 of the stopper 42 are aligned. Further, the upper end surface of the spring retaining piece 63 comes into substantially contact with the lower surface of the top plate 56.
[0029]
A lid push-up member 42 is further combined at the place where the lock lever main body 41 and the stopper 42 are combined. The lid push-up member 43 is assembled by being fitted into the enclosure guide 55. The lid push-up member 43 is slid up and down in the enclosure guide 55 while being guided from the periphery by the enclosure guide 55. Further, the lid push-up member 43 is received by the guide reed 67 at the inner end. The cover push-up member 43 is slidably supported on the four surfaces in combination of the enclosure guide 55 and the guide ridge 67.
[0030]
As shown in FIGS. 4, 5, and 6, a spring receiving protrusion 70 that protrudes downward from the top surface is formed inside the lid lifting member 43. The spring retaining pin 66 is slidably inserted deeply into the spring receiving projection 70.
[0031]
An insertion hole 71 is formed.
[0032]
The lid push-up member 43 slides up and down in a state where the spring stopper pin 66 is inserted into the insertion hole 71. The guide of the up-and-down slide of the lid push-up member 43 is performed by the enclosure guide 55, the guide horizontal rod 67, the insertion hole 71 and the spring stopper pin 66.
[0033]
A helical push-up spring 72 is fitted around the spring receiving projection 70, and the upper end of the push-up spring 72 is on the top surface of the lid push-up member 43, and the lower end of the push-up spring 72 is the spring receiving seat 65. Since the force is pushed by force, an upward force is always urged to the lid lifting member 43.
[0034]
The lid push-up member 43 has a retaining collar 73 formed on the outer periphery of the lower end. The lid push-up member 43 pushed up by the push-up spring 72 is stopped by the retaining collar 73 coming into contact with the lower end of the enclosure guide 55, so that the lid push-up member 43 does not fall above the enclosure guide 55. Further, when the lid push-up member 43 is pushed down against the push-up spring 72, the lower end of the spring receiving projection 70 abuts against the spring receiving seat 65 and stops, so that the lid push-up member 43 falls off below the enclosure guide 55. There is nothing to do.
[0035]
As described above, the lock lever main body 41, the stopper 42, and the lid push-up member 43 are combined to form the lid lock lever 40.
[0036]
The lid lock lever 40 is rotatably supported by fitting bearing holes 52, 53 and 60, 61 to support shafts 46, 47 of the unit frame 30. The unit frame 30 will be described in more detail. As shown in FIGS. 4 to 18, most of the unit frame 30 is surrounded by a wall 80. Rising partition walls 82, 83, 84, and 85 are integrally formed on the bottom plate 81 of the unit frame 30. The rising partition walls 82 and 83 are connected at a right angle. The rising partition walls 84 and 85 are also connected at right angles. The lid lock solenoid 26 is received by the unit frame 30 by the rising partition wall 83, the rising partition wall 84 and the wall 80. The rising partition wall 85 serves as a guide for the plunger 32 of the lid lock solenoid 26.
[0037]
The lid lock detection switch 25 is accommodated in the unit frame 30 so as to be adjacent to the lid lock solenoid 26.
[0038]
The lid lock detection switch 25 has two movable contacts. The upper movable contact plate 90 and the lower movable contact plate 91 are fixedly supported by the support base 92 at the base side. The upper and lower movable contact piece plates 90 and 91 are made of phosphor bronze plates and are provided so as to face each other with a gap therebetween, and contact points 93 and 94 are provided on the tip side. The support base 92 is formed of an insulating material and has a spacing plate 95 interposed between the vertically movable contact piece plates 90 and 91.
[0039]
The lid lock detection switch 25 is attached in the unit frame 30 by the support base 92 being held by the support recess 96, the rising partition wall 82, and the wall 80. In the lid lock detection switch 25, the contacts 93 and 94 are open when the lid 16 of the washing machine is open. When the lid 16 is closed, the contacts 93 and 94 are closed. The closed contacts 93 and 94 are opened when a safety lever, which will be described later, is activated by an abnormal operation of the washing machine. Details will be described later.
[0040]
Thus, the lid lock solenoid 26 and the lid lock detection switch 25 are stored side by side in the unit frame 30 side by side.
[0041]
The unit frame 30 in which the lid lock solenoid 26 and the lid lock detection switch 25 are housed is covered with the upper lid 100. The relationship between the upper lid 100 and the upper lid 100 and the unit frame 30 will be described with reference to FIGS.
[0042]
FIG. 19 is a plan view of the top lid 100 as seen from the inside upside down. FIG. 20 is a P arrow view of FIG. 19 viewed from the direction of the P arrow. FIG. 21 is a cross-sectional view in a facing state before the unit frame 30 and the upper lid 100 are combined. As shown in the drawing, the upper lid 100 is formed with a lower wall 102 having a low height surrounding the top plate 101. Locking walls 103 and 104 are formed at opposite positions so as to extend below the downward wall 102. Locking claws 105 and 106 are formed inside the lower ends of the locking walls 103 and 104. A locking piece 107 is formed so as to extend downward from the downward wall 102 at a location where the locking walls 103 and 104 are not provided. A locking claw 108 is formed outside the lower end of the locking piece 107.
[0043]
With the unit frame 30 and the upper lid 100 facing each other as shown in FIG. 21, the upper lid 100 is attached to the unit frame 30 by pushing the upper lid 100 into the unit frame 30.
[0044]
When the upper lid 100 is pushed in, the leading ends of the locking walls 103 and 104 are bent so as to spread outward, so that the pushing is easy. This is because the upper lid 100 and the locking walls 103 and 104 are formed of a synthetic resin (polypropylene containing glass fiber), so that they are easily bent. Moreover, since the front ends of the locking claws 105 and 106 are inclined, the inclination is reduced when the locking walls 103 and 104 are pushed in, so that there is little galling and the pushing is easy.
[0045]
When pushed to the back, the locking claws 105, 106 engage with the lower steps 109, 110 of the wall 80 of the unit frame 30. Due to the engagement between the locking claws 105 and 106 and the lower step portion 109, the upper lid 100 attached to the unit frame 30 does not easily come off.
[0046]
When the upper lid 100 is attached to the unit frame 30, the small protrusion 112 formed on the downward wall 102 of the upper lid 100 is fitted into the small groove 111 formed on the wall 80 of the unit frame 30. By fitting the small groove 111 and the small protrusion 112, the wall 80 and the downward wall 102 of the unit frame 30 do not just face each other but are joined to each other and become strong. Also, it is difficult for moisture to enter the unit frame 30. Insulation failure or malfunction of the lid lock detection switch 25 and lid lock solenoid 26 does not occur.
[0047]
Further, when the upper lid 100 is attached to the unit frame body 30, the locking claw 108 of the locking piece 107 is also engaged with the unit frame body 30. That is, since the locking piece 107 is inserted into the insertion hole 113 formed in the unit frame 30 and the locking claw 108 is engaged with the lower step portion 114 provided below, the upper lid 100 is attached to the unit frame 30. Therefore, it becomes harder to come off. Since the tip of the locking claw 108 is inclined, there is little galling when the locking piece 107 is inserted into the insertion hole 113, and the upper lid 100 is attached to the unit frame 30 as much as the locking walls 103 and 104. The workability at the time is good.
[0048]
15 is a cross-sectional view taken along the line 15 / I-15 / II in FIG. 16 is a cross-sectional view taken along the line 16 / I-16 / II in FIG. As shown in FIGS. 14 and 15, a lid lock detection operation piece 120 for operating the lower movable contact piece plate 91 of the lid lock detection switch 25 is formed on the bottom plate 81 of the frame 30. The lid lock detecting operation piece 120 is formed integrally with the bottom plate 81 of the unit frame 30. The lid lock detecting operation piece 120 is formed with a cut groove in the periphery except for the base connected to the bottom plate 81. The lid lock detecting operation piece 120 moves up and down as a fulcrum at the base. It is easy to move because it is thinned out only at the base.
[0049]
An upper convex portion 121 and a lower convex portion 122 are formed at the tip of the lid lock detecting operation piece 120. The upper convex portion 121 contacts the lower movable contact plate 91. The lower convex portion 122 abuts on a lid lock detection external operation plate described later.
[0050]
As shown in FIGS. 14 and 16, the upper movable contact plate 90 of the lid lock detection switch 25 is operated on the bottom plate 81 of the unit frame 30. A dehydration abnormality detecting operation piece 123 is formed. The dehydration abnormality detection operation piece 123 is formed integrally with the bottom plate 81 of the unit frame 30. The dehydration abnormality detecting operation piece 123 is formed with a kerf for separation around the base plate 81 except for a base connected to the bottom plate 81. The dehydration abnormality detecting operation piece 123 moves up and down so as to be lifted with the root as a fulcrum. An upward convex portion 124 is formed on the upper end of the dehydration abnormality detecting operation piece 123, and a downward convex portion 125 is formed on the lower side of the middle. The upward convex portion 124 abuts on the upper movable contact plate 90. The downward convex portion 125 abuts on an external operation portion of a dehydration abnormality detection lever described later.
[0051]
As shown in FIGS. 4 to 10, the lid lock lever 40 described above further includes a lid lock detection external operation plate 130. The lid lock detection external operation plate 130 may be formed integrally with the lock lever main body 41 or the stopper 42 constituting the lid lock lever 40, but is formed separately in the present embodiment.
[0052]
The lid lock detection external operation plate 130 is incorporated in the lid lock lever 40 and swings together with the rotation of the lid lock lever 40.
[0053]
The lid lock detection external operation plate 130 is formed of the same synthetic resin as the lock lever main body 41, but may be formed of a thin metal plate (steel plate, stainless steel plate, etc.).
[0054]
The lid lock detection external operation plate 130 has a curved portion 131 in the vicinity of the base attached to the lid lock lever 40, and the tip extends straight. On the front end side of the lid lock detection external operation plate 130, a pressing convex portion 132 is formed on the upper surface. The pressing protrusion 132 is provided at a position facing the lower protrusion 122 of the lid lock detection operation piece 20.
[0055]
When the lid lock lever 40 is swung, the lid lock detecting operation piece 120 is moved via the pressing convex portion and the lower convex portion 122, and the lower movable contact piece plate 91 is further moved up.
[0056]
As shown in FIGS. 4 to 10, the dehydration abnormality detection lever 140 is swingably supported by the support legs 44 and 45 of the unit frame 30 in the same manner as the lid lock lever 40.
[0057]
The dehydration abnormality detection lever 140 includes a shoulder portion 141 and an arm portion 142 that extends downward from the shoulder portion 141. Protrusion shafts 143 and 144 are formed on the left and right ends of the shoulder 141. The projection shafts 143 and 144 are rotatably supported by bearing holes 145 and 146 formed inside the support shafts 46 and 47 shown in FIG.
[0058]
The bearing hole 146 is a normal circular hole, but the bearing hole 145 is a vertically long hole such as an ellipse extending upward as shown in FIGS. The upper half of the support shaft 46 is an opening.
[0059]
For this reason, the protruding shaft 145 can move up and down in the range of the vertically long bearing hole 145. That is, since the projection shaft 145 can move up and down in the bearing hole 145 with the projection shaft 144 fitted in the bearing hole 146 being a circular hole as a fulcrum, the dehydration abnormality detection lever 140 can move so as to tilt greatly as shown in FIG. .
[0060]
Of course, the dehydration abnormality detection lever 140 can move as shown in FIG. 6 while the protruding shaft 145 is positioned below the bearing hole 145.
[0061]
The dehydration abnormality detection lever 140 includes an external operation unit 147 that rises above the arm unit 142. The upper end of the external operation unit 147 is disposed so as to face the downward convex portion 125 of the dehydration abnormality detection operation piece 123.
[0062]
At the time of dehydration abnormality, the dehydration abnormality detection lever 140 operates, the downward convex portion 125 is pushed by the external operation unit 147, and the dehydration abnormality detection operation piece 123 is moved.
[0063]
As shown in FIGS. 7 to 10, a locking protrusion 150 is formed on the external operation unit 147 of the dehydration abnormality detection lever 140. As shown in FIG. 18, the locking projection 150 is locked to a receiving hook 151 formed on the lower surface of the unit frame 30. Further, the dehydration abnormality detection lever 140 is provided with a helical push-back spring 152. The push-back spring 152 is attached between a spring receiving upward projection 153 provided on the upper portion of the arm portion 142 of the dehydration abnormality detection lever 140 and a spring receiving downward projection 154 formed on the lower surface of the bottom plate 81 of the unit frame 20.
[0064]
The dehydration abnormality detection lever 140 is in the state shown in FIGS. 4 to 6 by the push-back spring 152 and receives a force rotating in the clockwise direction around the bearing holes 145 and 146. Since 150 is locked to the receiving hook 151, it does not go to the right from the position shown in FIGS. If the dehydration abnormality does not occur, the dehydration abnormality detection lever 140 is positioned in the state shown in FIGS.
[0065]
The lid lock solenoid 26 will be described in more detail.
[0066]
As shown in FIGS. 11, 12, and 27, a stopper receiving piece 160 is provided on the plunger 32 of the lid lock solenoid 26. The plunger 32 is made of a ferromagnetic material such as a steel plate, while the stopper receiving piece 160 is made of plastic (Duracon).
[0067]
The stopper receiving piece 160 has a bottom plate portion 161 and a base portion 162 higher than the bottom plate portion 161. A guide groove 163 that runs in the longitudinal direction is formed on the lower surface of the bottom plate portion 161. A guide rail that is slidably fitted in the guide groove 163 is not shown, but is provided on the bottom plate 81 of the unit frame 30.
[0068]
A spring receiving recess 164 is formed in the base portion 162. The spring receiving recess 164 has a rectangular shape. A connecting convex portion 165 is formed on the upper surface of the base portion 162. This connection convex part 165 is formed so that it may stand above the base part 162, and has comprised the semi-cylindrical shape. The connecting convex portion 165 provided so as to rise at the edge of the spring receiving recess 164 is formed so that the flat portion is flush with the edge of the spring receiving recess 164.
[0069]
A connecting hole 166 is formed on the distal end side of the plunger 32. The connecting hole 166 has a circular shape. The inner diameter of the connecting hole 166 is the same as or larger than the outer diameter of the connecting convex portion 165. The plunger 32 is overlapped with the base portion 162 and connected to the stopper receiving piece 160 with the connecting projection 165 fitted in the connecting hole 166.
[0070]
There is play in the connection between the plunger 32 and the stopper receiving piece 160. Since it is connected to the circular connecting hole 166 and the semicircular connecting convex portion 165, the radius is free.
[0071]
One end of the pulling spring 167 of the plunger 32 is inserted into the spring receiving recess 164 from the connecting hole 166 and locked. The other end is locked to a spring receiving groove 168 formed in the rising partition wall 84 of the unit frame 30 as shown in FIGS.
[0072]
The plunger 32 is pulled out from the lid lock solenoid 26 by the spring force of the pull-out spring 167. When the lid lock solenoid 26 is energized, the plunger 32 is pulled into the back side of the lid lock solenoid 26 against the spring force of the drawer spring 167.
[0073]
In the state in which the plunger 32 is retracted, as shown in FIGS. 4, 7 and 12, the stopper receiving piece 160 that prevents the stopper piece 62 of the lid lock lever 40 from moving is retracted. The piece 62 comes until it abuts against the rising partition wall 85.
[0074]
On the other hand, when the plunger 32 is not retracted, the stopper piece 62 of the lid lock lever 40 abuts against the side surface of the stopper receiving piece 160 and is stopped as shown in FIGS. is there.
[0075]
As described above, in order to prevent a malfunction in which the plunger 32 is retracted when the stopper piece 62 is in contact with the side surface of the stopper receiving piece 160 and the lid lock solenoid 26 is not energized, A stopper receiving piece 160 is provided at the tip of 32. The prevention of malfunction will be described in detail later. If the malfunction does not occur, or if the malfunction that the plunger 32 is pulled in can be solved by other solution means, the stopper piece 62 may be directly received by the plunger 32.
[0076]
The lid lock lever 40 is provided with a return spring 170. As shown in FIGS. 4 and 5, the return spring 170 is hung on a spring retaining groove 172 formed in a spring retaining hook 171 of the upper lid 100 and a spring retaining piece 63 of the stopper 42. The upper lid 100 is formed with a recess so that the return spring 170 is dropped. The return spring 170 is biased so that the lid lock lever 40 is reversed to lock the lid 16 of the washing machine.
[0077]
As shown in FIGS. 4, 5, and 25, a groove 173 is formed between the spring retaining piece 63 and the stopper piece 62 of the stopper 42. When the lid lock lever 40 rotates, the flat plate 101 of the upper lid 100 enters and exits the groove 173. The lid lock unit 15 has the above structure. The lid lock unit 15 is arranged such that the lid lock lever 40 faces the lid 16 of the washing machine, and the arm portion 142 of the dehydration abnormality detection lever 140 faces the upper outer periphery of the outer tub 2 via a gap. The lid lock unit 15 is fastened and fixed to the top cover 12 by passing screws through screw holes 174 and 175 provided at both ends of the unit frame 30.
[0078]
As shown in FIGS. 4, 5, and 6, the top cover upper cover 176 that also covers the lid lock unit 15 is formed with a notch 177 that enters and exits when the lock claw 54 of the lid lock lever 40 swings. ing. A claw receiving portion 178 is formed on the front end of the washing machine lid 16 facing the lock claw 54. The claw receiving portion 178 is a recess having a wall 179 on the back side and a bottom plate portion 180 on the bottom side.
[0079]
FIG. 4 shows a state where the lid 16 of the washing machine is not locked by the lid lock lever 40. The lid 16 is pushed up by the lid push-up member 43 of the lid lock lever 40 so that the lid 16 can be opened. The lid 16 can be easily opened by placing a hand on the nail holder 178. The claw receiving portion 178 also serves as a handle.
[0080]
FIG. 5 shows a state in which the lid 16 of the washing machine is locked by the lid lock lever 40. The lock claw 54 of the lid lock lever 40 hooks and pulls the claw receiving portion 178 of the lid 16 and closes the lid 16. Since the claw receiving portion 175 (handle) falls inside the top cover upper cover 176, the lid 16 cannot be opened.
[0081]
The above has described the embodiment of the present invention mainly from the viewpoint of configuration.
[0082]
Next, an embodiment of the present invention will be described mainly from the viewpoint of operation.
[0083]
In the state shown in FIG. 4, since the lid 16 of the washing machine is not locked by the lid lock lever 40, the lid 16 is opened by placing a hand on the nail receiving portion 178 that also serves as a handle. After putting laundry, detergent, etc. through the slot 17, the lid 16 is closed and the lid 16 is pushed down.
[0084]
The lid lifting member 43 of the lid lock lever 40 is pushed down by the bottom plate portion 180 of the claw receiving portion 178 of the lid 16. Since the push-up spring 72 is weaker than the return spring 170 of the lid lock lever 40, the lid push-up member 43 descends against the push-up spring 72 before the lid lock lever 40 rotates. After the lid push-up member 43 is lowered, the lid lock lever rotates counterclockwise against the return spring 170 with the support shafts 46 and 47 as fulcrums. With this rotation, the lock claw 54 enters the claw receiving portion 178 of the lid 16 and enters the state shown in FIG.
[0085]
Since the stopper 42 is rotated together with the lid lock lever 40, the stopper piece 62 comes out of the plunger 32 and the stopper receiving piece 160 of the lid lock solenoid 26. The plunger 32 is pulled out from the lid lock solenoid 26 by the force of the pull-out spring 167. Even if the lid 16 is stopped from being pushed down and the lid lock lever 40 tries to rotate clockwise by the force of the return spring 170, the stopper receiving piece 160 already exists in front of the stopper piece 62, and the tip of the stopper piece 62 is the stopper receiving portion. It strikes against the side surface of the base portion 162 of the piece 160. Therefore, the lid lock lever 40 cannot be rotated further in the clockwise direction, and the locked state of the lid 16 shown in FIG. 5 is maintained.
[0086]
In this lid lock state, the lid lock detection switch 25 is closed by the lid lock detection external operation plate 130 that rotates together with the lid lock lever 40.
[0087]
That is, the pressing projection 132 of the lid lock detection external operation plate 130 pushes the lower projection 122 of the lid lock detection operation piece 120 from below, and the upper projection 121 of the lid lock detection operation piece 120 is below the lid lock detection switch 25. By pushing the side movable contact plate 91 from below, the lower movable contact plate 91 is bent upward, and the contact 94 of the lower movable contact plate 91 comes into contact with the contact 93 of the upper movable contact plate 90 so as to cover it. The lock detection switch 25 is turned on.
[0088]
Thus, the lid 16 of the washing machine is closed and the lid lock detection switch 25 shown in FIG. 3 is closed, so that the washing machine can be operated.
[0089]
Here, when the start switch 23 is turned on, the water supply valve 13 is opened to supply water. When the water supply is completed, the motor 8 is energized and the washing process is executed. After that, the drain valve 14 is opened and the drainage is completed, and the dehydration process is executed. Subsequently, the rinsing process is performed, and the laundry is finished after the final dewatering process is performed.
[0090]
The lid 16 is locked by the lid lock lever 40 even after washing is completed. Here, when the lid lock release switch 24 is turned on, the lid lock solenoid 26 of the lid lock unit 15 is energized, and the plunger 32 moves toward the lid lock solenoid 26 against the drawer spring 167. Since the stopper piece 160 which has received the tip of the stopper piece 62 also moves together and moves away, the lid lock lever 40 is rotated clockwise by being pulled by the return spring 170. The lock claw 54 of the lid lock lever 40 is disengaged from the claw receiving portion 176 of the lid 16, and the lid 16 is pushed up by the push-up spring 72 of the lid push-up member 43 to return to the original state shown in FIG.
[0091]
If the outer tub 2 is vibrated abnormally due to the unbalanced rotation of the washing and dewatering tub 5 during the above dehydration process during the washing operation, the lid lock detection switch 25 is turned off, and the motor 8 rotates according to the instruction of the operation control circuit 20. Is stopped and the operation is ended, or the dehydration operation is skipped and the next operation is shifted to. That is, the lid lock detection switch 25 also has a function of an abnormal dehydration detection switch.
[0092]
That is, when the outer tub 2 abnormally vibrates and the outer tub 2 pushes the arm portion 142 of the dehydration abnormality detection lever 140 outward, the dehydration abnormality detection lever 140 is tilted against the push-back spring 152, so that it is shown in FIG. It becomes a state. When the outer tub 2 moves away from the arm portion 142, the dehydration abnormality detection lever 140 is returned by the force of the push-back spring 152, so that the state shown in FIG.
[0093]
In the dehydration abnormality shown in FIG. 6, the external operation unit 147 of the dehydration abnormality detection lever 140 pushes the downward convex part 125 of the dehydration abnormality detection operation piece 123 from below, and the upward convex part of the dehydration abnormality detection operation piece 123. 124 pushes the upper movable contact plate 90 of the lid lock detection switch 25 from below, so that the upper movable contact plate 90 bends upward, and the contact 93 of the upper movable contact plate 90 becomes the contact of the lower movable contact plate 91. Apart from 94, the lid lock detection switch 25 is turned OFF.
[0094]
Further, in the dehydration process, as shown in FIG. 10, when the laundry 190 jumps out of the washing / dehydration tub 5, the arm portion 142 of the dehydration abnormality detection lever 140 is moved while the laundry 190 that has jumped around the outer periphery of the outer tub 2. Will be hit from the side. When the abnormality detection lever 140 is tilted sideways, the external operation portion 147 of the dehydration abnormality detection lever 140 pushes the downward convex portion 125 of the dehydration abnormality operation piece 123 from below, and the upward convex portion 124 of the dehydration abnormality detection operation piece 123 Since the upper movable contact plate 90 of the lid lock detection switch 25 is pushed from below, the upper movable contact plate 90 bends upward, and the contact 93 of the upper movable contact plate 90 moves from the contact 94 of the lower movable contact plate 91. The lid lock detection switch 25 is turned off. Thereby, the rotation of the motor 8 is stopped.
[0095]
Previously, regarding the lid lock solenoid 26, it has been mentioned that the stopper receiving piece 160 is provided at the tip of the plunger 32 in order to prevent malfunction, but will be described in more detail.
[0096]
During the dehydration process, the outer frame 1 may shake strongly due to imbalance of the washing / dehydration tank 5 or the like. In spite of the fact that the abnormal dehydration detection lever 140 does not operate, a malfunction occurs in which the lid lock detection switch 25 is turned off.
[0097]
It was found that this was due to the plunger 32 that directly received the stopper piece 62 moving and retracted due to the strong shaking of the outer frame. That is, when the plunger 32 is subjected to strong shaking in the direction in which the plunger 32 enters and exits, the steel-made plunger 32 moves due to inertia due to its own weight.
[0098]
If the spring force of the pull-out spring 167 is increased, the movement of the plunger 32 can be stopped, but there is a problem that the lid lock solenoid 26 must be enlarged accordingly.
[0099]
Therefore, by providing the stopper receiving piece 160 having a light weight for receiving the stopper piece 62 at the tip of the plunger 32 and connecting with a play allowance, even if the outer frame 1 is strongly shaken, it does not malfunction. Even if it receives strong shaking, the plunger 32 moves within the range of play allowance of the connecting portion, but the stopper receiving piece 160 receiving the stopper piece 62 cannot be pulled. Of course, since the stopper receiving piece 160 is light, its own inertia force is very small.
[0100]
Next, characteristic items will be enumerated from the embodiments of the present invention described above.
[0101]
(1) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, and the unit frame 30 is covered with an upper lid 100 or the like, and the lid lock lever 40 is swingably supported outside the unit frame 30.
[0102]
As a result, the lid lock solenoid 26 and the lid lock detection switch 25, which are electrical components, are housed in the unit frame 30 separately from the lid lock lever 40, so that waterproofness is improved and safety is improved.
[0103]
Further, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size becomes compact. Therefore, the lid lock unit 15 is convenient to fit in the narrow space of the top cover 12. It is.
(2) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, a plunger 32 that moves in and out of the lid lock solenoid 26 is provided, and the lid lock lever 40 that is swingably supported on the outside of the unit frame 30 is disposed closer to the lid lock solenoid 26 side. When the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the lid 32 is pushed out by the protrusion of the plunger 32. The lock lever 40 is held in a lid lock state.
[0104]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 can be accommodated in a narrow space of the top cover 12. Is convenient.
[0105]
Further, since the lid lock lever 40 that is swingably supported on the outside of the unit frame 30 is disposed closer to the lid lock solenoid 26 side, the plunger lock lever 40 is used in comparison with the lid lock detection switch 25 as a lid lock detection switch 25. The mechanism related to the lock between the lid 32 and the lid lock lever is simply and compactly assembled.
[0106]
(3) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, and a plunger 32 that moves in and out of the lid lock solenoid 26 is provided. The lid lock lever 40 is supported on the outside of the unit frame 30 so as to be swingable. A lid lock detection external operation plate 130 for operating the lid lock detection switch 25 is provided, and the lid lock lever 40 is engaged with the lid 16 to close the lid 16. In the lid lock state, the lid lock lever 40 is held in the lid lock state by the protrusion of the plunger 32, and the lid lock detection switch 25 is operated by the lid lock detection external operation plate 130. It is.
[0107]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 can be accommodated in a narrow space of the top cover 12. Is convenient.
[0108]
Further, the lid lock detection external operation plate 130 for opening / closing the lid lock detection switch 25 swings and rotates together with the lid lock lever 40, so that the lid lock detection switch 25 is reliably opened and closed without error.
[0109]
(4) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25, a plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring that urges the plunger 32 in a protruding direction, and is swingably supported outside the unit frame 30. However, the lid lock lever 40 prevented the plunger 32 from protruding, and conversely, the hand going by the plunger 32 was blocked. In the lid lock state where the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is provided. Is held in a lid-locked state, and when the lid 16 is not in a lid-locked state where the lid 16 can be opened, the plunger 32 which is about to protrude by a pull-out spring is blocked by a stopper piece 62.
[0110]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 can be accommodated in a narrow space of the top cover 12. Is convenient.
[0111]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is brought into the lid lock state. Since the plunger 32 which is to be pushed out by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 is not held and the lid 16 can be opened, the lid 16 is locked and the lid 16 is opened with a simple configuration. It is possible to reliably hold the two states that can be performed, and no malfunction occurs when switching.
[0112]
(5) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. The plunger 32 includes a lock detection switch 25, a plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring that biases the plunger 32 in a protruding direction, and a stopper receiving piece 160 on the distal end side of the plunger 32. The stopper receiving piece 160 is provided with a connecting convex portion 165, and the connecting convex portion 165 is fitted into the distal end side of the plunger 32. The connecting hole 166 is formed large so that the connecting convex portion 165 can move to the extent of play, and is supported on the outside of the unit frame 30 so as to be swingable. The lid receiving lever 160 has a stopper receiving piece 160. A state of lid lock in which a stopper piece is provided that prevents protrusion or conversely a hand that is blocked by the stopper receiving piece 160, and the lid lock lever 40 engages the lid 16 and closes the lid 16 Then, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from moving, and the lid lock state is maintained. When the lid 16 is not in a lid lock state where the cover 16 can be opened, the stopper receiving piece 160 which is to be protruded by a pull spring is used. It is characterized by being blocked by the stopper piece 62.
[0113]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0114]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and closes the lid 16, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from going and the lid lock state is maintained. Since the stopper receiving piece 160 which is about to be protruded by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 can be opened, the lid 16 can be locked and the lid 16 can be opened with a simple configuration. The two states can be reliably held, and no malfunction occurs when switching.
[0115]
Further, a connecting projection 165 is provided on the stopper receiving piece 160, and a connecting hole 166 is provided on the distal end side of the plunger 32 so that the connecting projection 165 can be fitted. The connecting hole 166 can move the connecting projection 165 to an extent of play. Since it is formed large, even if the plunger 32 moves slightly in the direction of entering and exiting due to an impact such as vibration, the movement of the plunger 32 is absorbed by the play of the connecting portion, and the stopper receiving piece 160 does not move as the plunger moves. . For this reason, the malfunction that the lid lock state is released by impact or the like does not occur.
[0116]
Further, since there is play in the connecting portion, the stopper receiving piece 160 starts to be pulled after the plunger 32 is pulled a little. After pulling the plunger 32 and getting a little momentum, the stopper receiving piece 160 that is heavy due to the abutment of the stopper piece 62 is pulled. Therefore, the initial current flowing through the lid lock solenoid 26 can be kept low.
[0117]
In addition, you may make it provide the connection convex part 165 in the plunger 32, and the connection hole 166 in the stopper receiving piece 160. FIG.
[0118]
(6) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. The plunger 32 includes a lock detection switch 25, a plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring that biases the plunger 32 in a protruding direction, and a stopper receiving piece 160 on the distal end side of the plunger 32. The stopper receiving piece 160 is provided with a connecting convex portion 165, and the connecting convex portion 165 is fitted into the distal end side of the plunger 32. The connecting hole 166 is formed large so that the connecting convex portion 165 can move to the extent of play, and one end of the drawer spring is locked to the connecting hole 166 and supported on the outside of the unit frame 30 so as to be swingable. In addition, the lid lock lever 40 is provided with a stopper piece that prevents the stopper receiving piece 160 from protruding, or conversely, a hand that goes by the stopper receiving piece 160 is blocked, and the lid locking lever 40 is attached to the lid 16. In the lid lock state in which the lid 16 is closed by being engaged, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from going and the lid lock state is maintained and the lid 16 can be opened. Then, the stopper receiving piece 160 to be protruded by the drawer spring is blocked by the stopper piece 62.
[0119]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0120]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and closes the lid 16, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from going and the lid lock state is maintained. Since the stopper receiving piece 160 which is about to be protruded by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 can be opened, the lid 16 can be locked and the lid 16 can be opened with a simple configuration. The two states can be reliably held, and no malfunction occurs when switching.
[0121]
Further, a connecting projection 165 is provided on the stopper receiving piece 160, and a connecting hole 166 is provided on the distal end side of the plunger 32 so that the connecting projection 165 can be fitted. The connecting hole 166 can move the connecting projection 165 to an extent of play. Since it is formed large, even if the plunger 32 moves slightly in the direction of entering and exiting due to an impact such as vibration, the movement of the plunger 32 is absorbed by the play of the connecting portion, and the stopper receiving piece 160 does not move as the plunger moves. . For this reason, the malfunction that the lid lock state is released by impact or the like does not occur.
[0122]
Further, since there is play in the connecting portion, the stopper receiving piece 160 starts to be pulled after the plunger 32 is pulled a little. After pulling the plunger 32 and getting a little momentum, the stopper receiving piece 160 that is heavy due to the abutment of the stopper piece 62 is pulled. Therefore, the initial current flowing through the lid lock solenoid 26 can be kept low.
[0123]
Further, the stopper receiving piece 160 is provided with a connecting projection 165, a connecting hole 166 is provided on the distal end side of the plunger 32, and the plunger 32 is locked to the connecting hole 166 at one end of the drawer spring. Therefore, it is not necessary to provide a separate place for locking the connecting hole 16 and the drawer spring, so that the structure becomes simpler.
[0124]
(7) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, and a plunger 32 that moves in and out of the lid lock solenoid 26 is provided. The lid lock lever 40 is swingably supported on the outside of the unit frame 30, and the dehydration abnormality detection lever is supported by the unit frame 30. In the state of a lid lock in which the lid lock lever 40 engages with the lid 16 and closes the lid 16, the plunger 3 is supported in a swingable manner. 2, the lid lock lever 40 is held in the lid lock state, the lid lock detection switch 25 is turned on, and the dehydration abnormality detection lever is activated during the dehydration process. It is characterized by being turned off.
[0125]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0126]
Since the dehydration abnormality detection lever is provided and the lid lock detection switch 25 is operated by the dehydration abnormality detection lever, the lid lock detection switch 25 also serves as the dehydration abnormality detection switch. Can have a switch function.
[0127]
It should be noted that the lid lock detection switch 25 is also used in such a manner that the lid 16 can be opened (ON), the lid lock state (OFF), and the dehydration abnormality (ON).
[0128]
(8) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25; a plunger 32 that moves in and out of the lid lock solenoid 26; and the lid lock lever 40 is swingably supported on support legs 44 and 45 provided on the lower side of the unit frame 30; A lid lock state in which the dehydration abnormality detection lever is swingably supported by the support legs 44 and 45 and the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed. Then, the lid lock lever 40 is held in the lid lock state by the protrusion of the plunger 32 and the lid lock detection switch 25 is turned on, and the dehydration abnormality detection lever is operated during the dehydration process, so that the lid lock The detection switch 25 is turned off.
[0129]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0130]
Since the dehydration abnormality detection lever is provided and the lid lock detection switch 25 is operated by the dehydration abnormality detection lever, the lid lock detection switch 25 also serves as the dehydration abnormality detection switch. Can have a switch function.
[0131]
Further, since the lid lock lever 40 and the dehydration abnormality detection lever are supported on the same support legs 44 and 45 so as to be swingable together, the structure of the support portion is simple and the assemblability is improved.
[0132]
(9) The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, and a plunger 32 that moves in and out of the lid lock solenoid 26 is provided. The lid lock lever 40 is supported on the outside of the unit frame 30 so as to be swingable. An operation plate 130 is provided, and is a lid lock that is formed integrally with the unit frame and swings up and down around a place connected to the unit frame. The lid lock detection operation piece 120 is disposed so as to be interposed between the lid lock detection external operation plate 130 and the lid lock detection switch 25, and the lid lock lever 40 is provided with the lid lock detection operation piece 120. In the lid lock state in which the lid 16 is closed by engaging with the lid 16, the lid lock lever 40 is held in the lid lock state by the protrusion of the plunger 32 and the lid lock detection operation piece 120 is used to detect the outside of the lid lock detection. The lid lock detection switch 25 is turned on by the operation plate 130.
[0133]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0134]
Further, since the lid lock detecting operation piece 120 is formed integrally with the unit frame 30, the number of parts is small and the configuration is simple compared to the case using another part.
[0135]
It is possible to directly operate the lid lock detection switch 25 with the lid lock detection external operation plate 130 without interposing the lid lock detection operation piece 120. Although there is an advantage that the number of parts does not increase, the unit frame 30 must be provided with a hole through which the lid lock detection external operation plate 130 enters and exits. Since water, dust, and the like can easily enter, there is a problem of safety and malfunction. Therefore, it is safe to interpose the lid lock detecting operation piece 120.
[0136]
Further, the lid lock detection switch 25 is turned on in the lid lock state, but it may be used in such a manner that it is turned off.
[0137]
(10). The outer frame 1 of the washing machine, the top cover 12 provided on the top of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, The lid lock unit 15 includes a lid lock lever 40 that engages and disengages from the lid 16. The lid lock unit 15 includes a lid lock solenoid 26 and a lid inside the unit frame 30 of the lid lock unit 15. A lock detection switch 25 is provided, a plunger 32 is provided to move in and out of the lid lock solenoid 26, and the lid lock lever 40 is swung to support shafts 46 and 47 of support legs 44 and 45 provided on the lower side of the unit frame 30. The dehydration abnormality detection lever 140 is swingably supported in the bearing holes 145 and 146 of the support shafts 46 and 47, and the bearing hole 145 is long in the vertical direction. In a lid lock state in which a vertically long hole is formed and the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the plunger 32 protrudes to hold the lid lock lever 40 in the lid lock state and to close the lid. When the lock detection switch 25 is set to (ON) and the dehydration abnormality detection lever is activated during the dehydration process, the lid lock detection switch 25 is set to (OFF). Therefore, when one of the support points of the dehydration abnormality detection lever 140 slides on the longitudinally long bearing hole 145 and falls sideways, the lid lock detection switch 25 is turned off.
[0138]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0139]
Since the dehydration abnormality detection lever is provided and the lid lock detection switch 25 is operated by the dehydration abnormality detection lever, the lid lock detection switch 25 also serves as the dehydration abnormality detection switch. Can have a switch function.
[0140]
Further, since the lid lock lever 40 and the dehydration abnormality detection lever are supported on the same support legs 44 and 45 so as to be swingable together, the structure of the support portion is simple and the assemblability is improved.
[0141]
Further, when the clothing that has popped out during dehydration hits the dehydration abnormality detection lever 140 from the side, when one of the support points of the dehydration abnormality detection lever 140 slides on the longitudinally long bearing hole 145 and falls sideways, the lid lock detection switch 25 Since it is set to (off), it also serves as a clothes jump-out detection switch.
[0142]
(11). The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, and the lid lock unit 15 And a lid lock lever 40 that engages and disengages from the lid 16. The lid frame includes a side lock lid 26 and a lid lock detection switch 25 in the unit frame 30 of the lid lock unit 15. A plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring 167 that biases the plunger 32 in a protruding direction, covers the unit frame 30 with an upper lid, and the lid lock lever 40 is The lid 30 is supported on the outside of the frame 30 so as to be swingable. A stopper 42 is provided on the lid lock lever 40, and the lid lock lever 4 Is provided so as to enter a recess formed on the upper side of the upper lid, and is engaged with the lid 16 by the lid lock lever 40 and the lid 16. In the lid lock state in which the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from moving, and the lid lock lever 40 is held in the lid lock state. The plunger 32 that is about to be protruded by the drawer spring 167 is blocked by a stopper piece 62.
[0143]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0144]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is brought into the lid lock state. Since the plunger 32 which is to be pushed out by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 is not held and the lid 16 can be opened, the lid 16 is locked and the lid 16 is opened with a simple configuration. It is possible to reliably hold the two states that can be performed, and no malfunction occurs when switching.
[0145]
Further, since the return spring 170 is arranged so as to enter the recess formed on the upper lid 100, the return spring 170 does not protrude so much on the upper lid 100, so that the compactness is achieved.
[0146]
(12). The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, and the lid lock unit 15 And a lid lock lever 40 that engages and disengages from the lid 16. The lid frame includes a side lock lid 26 and a lid lock detection switch 25 in the unit frame 30 of the lid lock unit 15. A plunger 32 that moves in and out of the lid lock solenoid 26, a drawer spring 167 that urges the plunger 32 in a protruding direction, covers the upper lid 100 over the unit frame 30, and the lid lock lever 40 The unit frame 30 is supported so as to be swingable, and a stopper 42 is provided on the lid lock lever 40 so that the lid lock lever is provided. -A return spring 170 for urging 40 in the direction of unlocking the lid lock, and the stopper 42 is a stopper that prevents the plunger 32 from protruding or conversely prevents the hand going by the plunger 32. A stopper 62 is provided on the stopper 42, and the return spring 170 with one end hooked on the spring stopper 63 is provided from the tip of the spring stopper 63. In the state of the lid lock in which the other end is placed along the straight direction and the other end is hooked on the spring retaining hook of the upper lid 100 and the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed. The jar 32 sticks out to prevent the stopper piece 62 from moving, and the lid lock lever 40 is held in the lid lock state, and the lid 16 can be opened in the non-lid lock state. It is characterized in that thwart the plunger 32, so projecting the out spring 167 with a stopper piece 62.
[0147]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0148]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is brought into the lid lock state. Since the plunger 32 which is to be pushed out by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 is not held and the lid 16 can be opened, the lid 16 is locked and the lid 16 is opened with a simple configuration. It is possible to reliably hold the two states that can be performed, and no malfunction occurs when switching.
[0149]
Further, since the return spring 170 with one end hooked on the spring stop piece 63 is disposed along the straight direction from the tip of the spring stop piece 63, the force of the return spring 17 acts directly on the lid lock lever 40. Therefore, the spring force works effectively and no force is applied to twist and bend the lid lock lever 40.
[0150]
(13). The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, and the lid lock unit 15 And a lid lock lever 40 that engages and disengages from the lid 16. The lid frame includes a side lock lid 26 and a lid lock detection switch 25 in the unit frame 30 of the lid lock unit 15. A plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring that biases the plunger 32 in a protruding direction, and allows the lid lock lever 40 to swing outside the unit frame 30. The lid lock lever 40 has a lock claw 54 and a lid push-up member 43. The lid push-up member 43 is A return spring that is slidably supported by the lock lever 40 and is urged upward by a push-up spring 42, a stopper piece 62 is provided on the lid lock lever 40, and the lid lock lever 40 is urged in the direction of releasing the lid lock. 170, the lid lock lever 40 is engaged with the lid 16 and the lid 16 is closed. In the lid lock state, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is locked to the lid. In a state where the lid 16 is not locked and the lid 16 can be opened, the plunger 32 which is about to protrude by the pulling spring 167 is blocked by the stopper piece 62, and further, in the state where the lid 16 is not locked, The lid push-up member 43 pushes up the lid 16.
[0151]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 is accommodated in a narrow space of the top cover 12. Convenient above.
[0152]
Further, in the lid lock state in which the lid lock lever 40 is engaged with the lid 16 and closes the lid 16, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from going and the lid lock state is maintained. Since the stopper receiving piece 160 which is about to be protruded by the pull-out spring is blocked by the stopper piece 62 in a state where the lid 16 can be opened, the lid 16 can be locked and the lid 16 can be opened with a simple configuration. The two states can be reliably held, and no malfunction occurs when switching.
[0153]
Further, when the lid 16 is not locked, the lid 16 is pushed up by the lid push-up member 43, so that the hand can be easily put on the lid 16 and the lid 16 can be easily opened.
[0154]
(14). The outer frame 1 of the washing machine, the top cover 12 provided on the upper portion of the outer frame 1, the lid 16 that can be opened and closed provided on the top cover 12, the lid lock unit 15 provided on the top cover 12, and the lid lock unit 15 And a lid lock lever 40 that engages and disengages from the lid 16. The lid frame includes a side lock lid 26 and a lid lock detection switch 25 in the unit frame 30 of the lid lock unit 15. A plunger 32 that moves in and out of the lid lock solenoid 26, a pull-out spring that biases the plunger 32 in a protruding direction, and allows the lid lock lever 40 to swing outside the unit frame 30. The lid lock lever 40 has a lock claw 54 and a lid push-up member 43. The lid push-up member 43 is A return spring that is slidably supported by the lock lever 40 and is urged upward by a push-up spring 42, a stopper piece 62 is provided on the lid lock lever 40, and the lid lock lever 40 is urged in the direction of releasing the lid lock. 170, and a claw receiving portion 178 is provided at the front end of the lid 16. The claw receiving portion 178 has a wall 179 on the back side and a recess having a bottom plate portion 180 on the bottom side, and locks the lid lock lever 40. When the claw 54 is engaged with the claw receiving portion 178 of the lid 16 and the lid 16 is closed, the plunger 32 protrudes to prevent the stopper piece 62 from going and the lid lock lever 40 is locked. In the state where the lid 16 is not locked and the lid 16 can be opened, the plunger 32 that tries to protrude by the pulling spring 167 is blocked by the stopper piece 62. In yet the lid 16 is not locked, is characterized in that the push from below the bottom plate portion 180 of the claw receiving portion 178 with the lid push-up member 43.
[0155]
Accordingly, since the lid lock solenoid 26 and the lid lock detection switch 25 are arranged side by side in the unit frame 30, the length is low and the overall size is reduced. Therefore, the lid lock unit 15 can be accommodated in a narrow space of the top cover 12. Is convenient.
[0156]
Further, when the lock claw 54 of the lid lock lever 40 is engaged with the claw receiving portion 178 of the lid 16 and the lid 16 is closed, the stopper receiving piece 160 protrudes to prevent the stopper piece 62 from going. Since the stopper receiving piece 160 which is to be protruded by the pull-out spring is blocked by the stopper piece 62 in a state where the lid lock state is maintained and the lid 16 can be opened, the stopper piece 62 blocks the lid 16 with a simple configuration. The two states in which the lock and the lid 16 can be opened can be reliably held, and no malfunction occurs when switching.
[0157]
Furthermore, when the lid 16 is not locked, the lid push-up member 43 pushes up the bottom plate portion 180 of the claw receiving portion 178 from below, so that the claw receiving portion 178 can be easily put into the hand and the lid 16 can be easily moved. Can be opened.
[0158]
(15). The outer frame 1 of the washing machine, the outer tub 2 placed in the outer tub 1, the washing / dehydrating tub 5 placed in the outer tub 2, the motor 8 provided on the lower side of the outer tub 2, and the outer frame A top cover 12 provided on the upper portion of 1, a lid 16 that can be opened and closed provided on the top cover 12, a lid lock unit 15 provided on the top cover 12, and a lid lock unit 15 that is provided on and engages with the lid 16. A lid lock lever 40 that is detached, and the rotation of the washing and dewatering tub 5 is defined in the clockwise direction when viewed from above, and is disposed at the front right position on the lid lock unit 15 and the lid The unit frame 30 of the lock unit 15 includes a lid lock solenoid 26 and a lid lock detection switch 25, a plunger 32 that moves in and out of the lid lock solenoid 26, and the lid lock lever 40 is unidirectional. The dehydration abnormality detection lever 140 is swingably supported on the outside of the unit frame 30 and the lid lock lever 40 engages with the lid 16 to support the lid 16. In the state of the lid lock to be closed, the lid lock lever 40 is held in the lid lock state by the protrusion of the plunger 32 and the lid lock detection switch 25 is turned on, and the dehydration abnormality detection lever is turned on during the dehydration process. By operating, the lid lock detecting switch 25 is turned off.
[0159]
Accordingly, since the dehydration abnormality detection lever is provided and the lid lock detection switch 25 is operated by the dehydration abnormality detection lever, the lid lock detection switch 25 also serves as the dehydration abnormality detection switch. Can have multiple switch functions.
[0160]
Usually, the lid 16 is often opened and closed with the right hand, and when the lid 16 is accidentally opened with the lid 16 even though the lid 16 is locked, the lid lock unit is placed at the place where the right hand is hung. Therefore, unlike the case where the lid lock unit 15 is arranged on the left side, the lid 16 is not twisted and deformed.
[0161]
(16). The outer frame 1 of the washing machine, the outer tub 2 placed in the outer tub 1, the washing / dehydrating tub 5 placed in the outer tub 2, the motor 8 provided on the lower side of the outer tub 2, and the outer frame A top cover 12 provided on the upper portion of 1, a lid 16 that can be opened and closed provided on the top cover 12, a lid lock unit 15 provided on the top cover 12, and a lid lock unit 15 that is provided on and engages with the lid 16. A lid lock lever 40 that is detached, and includes a lid lock solenoid 26 and a lid lock detection switch 25 in the unit frame 30 of the lid lock unit 15, and a plunger that moves in and out of the lid lock solenoid 26. 32, and the lid lock lever 40 is swingably supported on a support leg provided on the lower side of the unit frame 30, and the lid lock lever 40 engages with the lid 16 to close the lid 16. In the state of the lid lock, the plunger 32 protrudes to prevent the stopper piece 62 from moving, and the lid lock lever 40 is held in the lid lock state. The plunger 32 to be protruded is blocked by a stopper piece 62, the unit frame 30 is covered with the upper lid 100, and a screw threaded hole of a set screw for attaching the lid lock unit 15 to the top cover 12 on the opposite side of the unit frame 30 174, 175 are provided so that the swingable support axis of the lid lock lever 40 is provided along the side of the unit frame 30 where the screw holes 174, 175 are not provided, and the upper lid 100 is provided in the unit frame 30. The locking walls 103 and 104 of the upper lid 100 and the locking claws 105 and 106 are fixed to the screw holes 174 and 17. The is characterized in that formed on the opposite side to the side of the unit frame 30 is not provided.
[0162]
As a result, when the lock claw 54 of the lid lock lever 40 is engaged with the claw receiving portion 178 of the lid 16 and the lid 16 is closed, the stopper receiving piece 160 protrudes and the hand of the stopper piece 62 goes. Since the stopper receiving piece 160 which is to be protruded by the pulling spring is blocked by the stopper piece 62 in a state where the lid lock is held and the lid 16 can be opened and the lid 16 is not open, the stopper piece 62 is used to block the lid. The two states in which the 16 locks and the lid 16 can be opened can be reliably held, and there is no malfunction in switching.
[0163]
When the lid is locked, the unit frame 30 is deformed so as to bend upward when viewed from the side where the locking walls 103 and 104 and the locking claws 105 and 106 are present. This is against the force that pulls the lid 16 with the lid lock lever 40. With this modification, the mating portion of the upper lid 100 and the unit frame 30 is opened on the side where the locking walls 103 and 104 and the locking claws 105 and 106 are not provided. Since the locking walls 103 and 104 and the locking claws 105 and 106 are provided so as to avoid the mating portion that opens, the engagement by the locking claws 105 and 106 cannot be released.
[0164]
【The invention's effect】
As described above, the present invention includes an outer frame of a washing machine, a top cover provided on an upper portion of the outer frame, an openable / closable lid provided on the top cover, a lid lock unit provided on the top cover, and the lid lock. A lid lock lever that is provided in the unit and that engages and disengages from the lid, and includes a side and lid lock solenoid and a lid lock detection switch in the unit frame of the lid lock unit, and the lid lock solenoid A plunger that moves in and out, a pull-out spring that urges the plunger in the protruding direction, a stopper receiving piece on the distal end side of the plunger, a connecting convex portion on the stopper receiving piece, and a plunger tip A connecting hole into which the connecting convex part fits is provided on the side, and this connecting hole is formed large so that the connecting convex part can move to the extent of play. The lid lock lever is provided with a stopper piece that prevents the stopper receiving piece from protruding and conversely prevents the hand going by the stopper receiving piece. In the lid lock state in which the lock lever is engaged with the lid and the lid is closed, the stopper receiving piece protrudes to prevent the stopper piece from going and the lid lock state can be maintained and the lid can be opened. In the washing machine, the stopper receiving piece to be protruded by the drawer spring is blocked by the stopper piece.
[0165]
According to this configuration, the following advantages can be expected.
[0166]
(1) Since the lid lock solenoid and the lid lock detection switch are arranged side by side in the unit frame, the length is low and the overall size becomes compact. Therefore, the lid lock unit is convenient to fit in the narrow space of the top cover.
[0167]
Further, in the lid lock state where the lid lock lever is engaged with the lid and the lid is closed, the stopper receiving piece protrudes to prevent the stopper piece from going and the lid lock state can be maintained and the lid can be opened. Since the stopper receiving piece to be protruded by the pulling spring is blocked by the stopper piece in a state where the lid is not locked, the two states that the lid can be locked and the lid can be opened with a simple configuration can be surely switched. In this case, no malfunction occurs.
[0168]
Furthermore, the stopper receiving piece is provided with a connecting convex part, and a connecting hole is provided on the distal end side of the plunger so that the connecting convex part is fitted, and this connecting hole is formed large so that the connecting convex part can move to the extent of play. Even if the plunger slightly moves in the direction of entry / exit due to the impact of this, the movement of the plunger is absorbed by the play of the connecting portion, and the stopper receiving piece does not move as the plunger moves. For this reason, the malfunction that the lid lock state is released by impact or the like does not occur.
[0169]
Moreover, since there is play in the connecting portion, the stopper receiving piece starts to be pulled after the plunger is pulled a little. After pulling the plunger and getting a little momentum, you will pull the stopper receiving piece that is heavy with the stopper piece abutting, so pulling the stopper piece and pulling the stopper receiving piece at the same time is easy to pull, The initial current flowing through the lid lock solenoid can be kept low.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a fully automatic washing machine showing an embodiment of the present invention.
FIG. 2 is a plan view of the fully automatic washing machine shown in FIG. 1 as viewed from above.
3 is an electric circuit diagram of the fully automatic washing machine shown in FIG. 1. FIG.
4 is a diagram showing a state where the lid lock unit does not lock the lid in the fully automatic washing machine shown in FIG. 1;
FIG. 5 is a diagram showing a state where the lid lock unit locks the lid in the fully automatic washing machine shown in FIG. 1;
6 is a diagram showing a state in which the dehydration abnormality detection lever is activated in the fully automatic washing machine shown in FIG. 1 in a state where the lid lock unit locks the lid.
7 is a single view of the lid lock unit shown in FIGS. 4, 5, and 6 and corresponds to a state where the lid is not locked. FIG.
FIG. 8 is a single view of a lid lock unit similar to FIG. 7, corresponding to a state in which the lid is locked.
FIG. 9 is a cross-sectional view of the lid lock detection switch as viewed from the side in FIG.
FIG. 10 is a diagram illustrating a state in which the laundry that has jumped out contacts the dehydration abnormality detection lever from the side and operates the dehydration abnormality detection lever in the diagram illustrated in FIG. 9;
FIG. 11 is a diagram of a single unit of the lid lock unit shown in the above diagram, corresponding to a state in which the top lid is removed and the lid viewed from above is locked.
FIG. 12 is a single view of a lid lock unit similar to FIG. 11, corresponding to a state in which the upper lid is removed and the lid viewed from above is not locked.
FIG. 13 is a view corresponding to FIG. 12 with the upper lid covered.
FIG. 14 is a single-unit view of the unit frame according to the lid lock unit shown in the figure, and is a plan view seen from above the unit frame.
15 is a cross-sectional view taken along the line 15 / I-15 / II in FIG.
16 is a cross-sectional view taken along the line 16 / I-16 / II in FIG. 14;
17 is a view of FIG. 14 as viewed from the direction of arrow P. FIG.
18 is a view of FIG. 14 as viewed from the direction of arrow Q. FIG.
FIG. 19 is a single item view of the upper lid according to the lid lock unit shown in the above figure, and is a plan view of the upper lid as viewed from the inside.
20 is a view of FIG. 19 viewed from the direction of arrow P. FIG.
FIG. 21 is a diagram showing a unit frame and an upper lid according to the lid lock unit shown in the above figure, and is a diagram showing a state before the upper lid is attached to the unit frame.
FIG. 22 is a single-piece view of a lock lever main body according to the lid lock unit shown in the above figure.
23 is a view of FIG. 22 as viewed from the direction of arrow P. FIG.
24 is a view of FIG. 22 as seen from the direction of the arrow Q. FIG.
FIG. 25 is a single item view of a stopper according to the lid lock unit shown in the above figure.
26 is a view of FIG. 25 as seen from the direction of arrow P. FIG.
FIG. 27 is an enlarged perspective view showing a plunger and a stopper receiving piece according to the lid lock unit shown in the above figure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer frame, 12 ... Top cover, 15 ... Lid lock unit, 16 ... Lid, 25 ... Lid lock detection switch, 26 ... Lid lock solenoid, 30 ... Unit frame, 40 ... Lid lock lever, 100 ... Upper lid

Claims (1)

An outer frame of the washing machine, a top cover provided on an upper portion of the outer frame, an openable / closable lid provided on the top cover, a lid lock unit provided on the top cover, and provided on the lid lock unit. A lid lock lever that engages and disengages,
In the unit frame of the lid lock unit, there is a side and lid lock solenoid and a lid lock detection switch, a plunger that moves in and out of the lid lock solenoid, a drawer spring that urges the plunger in the protruding direction, and a plan. A stopper receiving piece is provided on the tip side of the jar, a connecting convex portion is provided on the stopper receiving piece, and a connecting hole in which the connecting convex portion is fitted is provided on the distal end side of the plunger. largely formed as front swingably supported on the outside of Kiyu knit frame, the lid locking lever, Dari hampered the stopper receiving pieces come protrude, the way in stopper receiving pieces 160 in the opposite In the state of the lid lock in which a stopper piece that is blocked is provided and the lid lock lever is engaged with the lid and the lid is closed, the stopper receiving piece protrudes and stops. Holding the state of the lid lock hurting the way par piece, a washing machine, characterized in that thwart the stopper receiving piece which attempt to protrude by the extraction spring with a stopper piece in a state not cover lock can open the lid.

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