JP3595236B2 - Container lid structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a lid structure of a container such as an electric water heater or a warming pot, or a warming rice cooker or a cooking pot.
[0002]
[Prior art]
The prior art will be described with reference to FIG. 9 using an example of a warming type electric water heater. Conventionally, a lid 100 of this type of insulated electric water heater is rotatably attached to a rear hinge 103 of a main body upper frame 102 in which an inner container 101 having an open upper end is inserted. At the end on the side, a lock mechanism 105 including a latch 104 and the like for holding the closed state of the inner container 101 is provided. As the lock mechanism 105, there is a lever type in which an engagement portion 107 between the lid 100 and the main body 102 is released by pulling up a latch button 106 rotatably attached to the upper portion of the lid 100. From the viewpoints of operability, certainty of opening / closing of the lid, simplicity of the structure, etc., it has become mainstream as the lid structure.
[0003]
Although there is no problem with the lid structure having such a configuration in normal use, when the latch button 106 happens to be touched, the lock mechanism 105 may be unintentionally loosened. In this case, it is necessary to reclose the lock mechanism 105. .
[0004]
As a countermeasure, for example, in Japanese Patent Application Laid-Open No. H10-155658, a lid lock arm 109 extending from the main body upper frame 102 into the lid 100 by operating a tapping lock lever 108 provided on the main body upper frame 102 is provided. A structure that restricts the movement of the latch button 106 and locks the lid 100 in a closed state is disclosed. Japanese Patent Application Laid-Open No. 11-197022 discloses a structure in which a cover is provided in a recess 110 into which a finger is inserted for operating the latch button 106 in the lever-type lid.
[0005]
[Problems to be solved by the invention]
In Japanese Patent Application Laid-Open No. H10-155658, since the lid and the main body are centered on the hinge portion 103 at the rear, that is, the hinge axis is used as a reference, the dispersion of the lid 100 and each component on the main body side. Are gathered at the front part on the opposite side to the hinge shaft, and the dimensional variation of the engaging portion between the lid 100 and the main body becomes particularly large. Therefore, the lid lock arm 109 enters the lid 100 from the main body side, and it is necessary to tighten the precision of the parts in order to reliably regulate the movement of the latch button. Operation could not be confirmed.
Further, in Japanese Unexamined Patent Application Publication No. 11-197022, when the main body falls over because the latch of the lid is not mechanically locked, the latch may move due to the impact force and the lid may be loosened unintentionally. Conceivable.
[0006]
In order to solve the above-mentioned problems, the present invention directly locks the movement of the latch itself, thereby securely locking the lid in the closed state and preventing the closed state of the lid from being unintentionally released. An object of the present invention is to provide a lid structure.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
The invention according to claim 1 provides an inner container for filling with water, a frame for holding the inner container, a lid for opening and closing the upper opening of the inner container, and turning the lid on the frame. A hinge portion movably supported, and provided on the opposite side of the hinge portion so as to be movably provided on the lid, and engaged with an engaging portion formed on the frame to close the lid. A latch that is held and a latch button that is operated when opening the lid to release the engagement with the engagement portion by moving the latch.Separately from the latch,Along with the lid, the movement of the latchDirectlyA latch restricting piece for restricting is separately provided from the latch button and further provided on the lid so as to be movable in a direction different from the moving direction of the latch.DirectlyA lock operation portion is provided on the lid slidably provided with an operation projection for operating to a restriction position for restricting and a release position for enabling movement of the latch, protruding outward from the surface of the lid. It is a lid structure of a container.
With this configuration, by operating the lock operation unit, the latch restricting piece directly restricts the movement of the latch, so that the locking operation of the lid is reliable and the reliability is high.
[0008]
The invention according to claim 2 provides an inner container for filling with water, a frame for holding the inner container, a lid for opening and closing the upper opening of the inner container, and turning the lid on the frame. A hinge portion movably supported, and provided on the opposite side of the hinge portion so as to be movably provided on the lid, and engaged with an engaging portion formed on the frame to close the lid. A latch to be held and a latch button to be operated when opening the lid to release the engagement with the engaging portion by moving the latch so that the operation portion faces the surface of the lid. A latch restricting piece is provided in the cover so as to be provided in the recessed part of the body and restricts the movement of the latch such that one end thereof fits into the groove of the latch to restrict the movement of the latch. Elastic body that applies force to the piece in the direction that one end of the piece fits into the groove of the latch A lock operation part for releasing one end of the latch restricting piece from the groove of the latch by applying a force in the direction of the lid to the pressing part to release the restriction of the latch, and the pressing part has a concave wall part of the lid. Wherein the latch restricting piece releases the latch restriction when the lock operating portion is pressed against the urging force of the elastic body. Structure.
With this configuration, when the lock operation section is not pressed, the latch is automatically locked, and forgetting to lock can be prevented.
Further, the invention according to claim 3 provides an inner container for filling with water, a frame for holding the inner container, a lid for opening and closing the upper opening of the inner container, and the lid for the frame. A hinge portion rotatably supported on the hinge portion, and the hinge portion is provided on the opposite side to be movably provided on the lid, and is engaged with an engaging portion formed on the frame to close the lid. A latch for holding in a state, and a latch button for releasing the engagement with the engaging portion by operating the latch when opening the lid to release the engagement with the engagement portion, are provided in the recess of the lid, A latch restricting piece for restricting the movement of the latch is further provided on the lid side, and the latch restricting piece is pivotally arranged at a position facing the recess inside the lid so as to form a seesaw structure with a support shaft orthogonal to the moving direction of the latch. One end of the latch regulating piece fits into the groove formed in the latch, An elastic body is provided so as to restrict the movement, and an elastic body is provided so that a force in a direction in which one end of the latch restricting piece fits into the groove is applied. Provided in the hole in the recess wall, the lock operation part The urging force protrudes outward from the recessed wall via the latch restricting piece, and when the lock operating portion is pressed against the urging force of the elastic body, the restriction by the latch restricting piece is released. A lid structure for a container, characterized in that:
With this configuration, when the lock operation section is not pressed, the latch is automatically locked, and forgetting to lock can be prevented.
[0009]
According to a fourth aspect of the present invention, in the container lid structure of the second or third aspect, when the latch button is operated with a finger to open the lid, the finger is inevitably touched at a location. , A pressing portion of the lock operation portion is provided. With this configuration, it is not necessary to perform the operation of unlocking the lock, and the usability is improved.
[0010]
Further, the invention according to claim 5 provides an inner container for filling with water, a frame for holding the inner container, a lid for opening and closing the upper opening of the inner container, and this lid for the frame. A hinge portion rotatably supported, and a cover member movably provided on the lid opposite to the hinge portion and engaged with an engaging portion formed on the frame body to close the lid member; And a latch button for releasing the engagement with the engagement portion by operating the latch when opening the lid to release the engagement with the engaging portion, and controlling the movement of the latch. A latch restricting piece for regulating is further provided on the lid side, a lock operating portion for operating the latch restricting piece is made to face the surface of the lid or in the vicinity thereof, and one of the latch buttons is turned into a recess provided on the upper part of the lid. It is a lever type member that is movably attached,DepartmentProvide a cover that opens and closes to cover the recess entrance for inserting a finger that operates the latch button in conjunction with the operation ofThe cover has a substantially elongated hole elongated in the front-rear direction and a substantially elongated hole elongated in the left-right direction,When the lock operation part is in the operation position for restricting the latch, the cover covers the recess entrance, and the lock operation part is provided with a rotation center boss at a lower part of a rotation knob protruding from the upper surface of the lid. An open / close boss is provided, and the boss at the center of rotation is attached to the lid so that the rotary knob can rotate,The rotation center boss is disposed so as to penetrate a substantially oblong hole elongated in the front-rear direction of the cover,Open / close boss in left and right direction of coverFineIt is arranged so as to penetrate a long substantially oval hole, and converts the rotation operation of the rotary knob into an operation to open and close the recess entrance of the cover in the front and rear direction through the opening and closing boss and the almost oval hole. A lid structure for a container, characterized in that:
With this configuration, when the lock operation portion is at the operation position for restricting the latch, the cover covers the recess entrance. With this configuration, if the lid is locked, the space is automatically covered, so that dust does not easily enter the concave portion, and it is easy to visually recognize whether or not the lock has been performed.
According to a sixth aspect of the present invention, in the lid structure of the container according to the fifth aspect, the opening / closing boss of the lock operating portion is configured such that a lower end of the opening / closing boss is a rear end of the latch when the rotary knob is at a position for closing the cover. And a restricting piece for restricting the movement of the latch.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the lid structure will be described with reference to the drawings, taking an electric water heater as an example of the container according to the present invention. In this description, as shown in FIG. 2, the side with the discharge port of the electric water heater is “front”, the side with the hinge is “rear”, and when the electric water heater is viewed from “front”, the left side is “ "Left" and right side are "right".
[0012]
(First Embodiment)
1 to 3 are explanatory views of an electric water heater according to a first embodiment of the present invention. FIG. 1 is a side sectional view showing an overall configuration, FIG. 2 is a plan view of the same, and FIG. FIG. 3 is an exploded perspective view for schematically explaining a mechanism.
[0013]
1 to 3, reference numeral 1 denotes a main body, a frame body 4 that covers a cylindrical body 2 and an upper part thereof and stores an inner container 3 that stores a liquid such as water, and a bottom cover 5 that covers a lower part of the main body 1. It is composed of
[0014]
The front portion of the frame 4 is a beak portion (beak-shaped portion) 6, which protrudes forward so as to cover the upper part of the discharge port 7 having a reverse "J" shape.
[0015]
Further, an engagement portion 9 having a substantially triangular cross section having a tapered surface 9a is formed at a position facing the lid 8 of the frame 4. A discharge passage 10 for discharging the liquid in the inner container 3 to the outside is provided at a front portion in the main body 1, and a start end thereof is connected to a bottom of the inner container 3 via a discharge pump 11, while an end end is provided. Is a swelling room 10a, in which an elastic resin made of elastic resin has a flat top and a tapered lower part, which accommodates a generally top-shaped safety valve 12, and a safety valve seat 12a having a circular-returned end face at the top. Connected to the discharge port 7. The lower part of the side surface of the safety valve 12 is tapered so that the safety valve 12 can easily move toward the safety valve seat 12a when the vehicle falls, and when the vehicle falls, the safety valve seat 12a is quickly closed and hot water in the inner container 3 flows out from the discharge port. Not to be.
[0016]
The dispensing pump 11 is driven by an electric motor 13. Numeral 14 denotes a heating element mounted on the outer bottom surface of the inner container 3, and although not shown, the temperature of the heating element is controlled by the operation of a temperature sensor or a temperature controller to heat and boil water in the inner container 3. After that, the temperature is maintained at a high temperature (about 97 ° C.).
[0017]
The lid 8 covers the upper opening of the inner container 3 and is attached rotatably around a hinge (hinge shaft) 15 provided at the rear of the frame 4. The lid 8 is fitted with a resin upper lid 16 and a resin lid cover 17 that covers the lower opening thereof, and a stainless steel inner lid 18 is attached and fixed so as to cover the lower surface of the lid cover 17.
[0018]
A long recess 19 is formed on the upper surface of the upper lid 16 on the left and right sides, and the rear half thereof is a peripheral wall 20 (see FIG. 2). Reference numeral 21 denotes a latch button which is provided in the recess 19 and rotates about a shaft 22. An axis vertical section having a horizontal portion and a vertical portion has a substantially L-shaped shape, and an operation knob (knob) serving as the horizontal portion Reference numeral 23 faces the upper surface of the upper lid 16, and the opening / closing piece 24, which is a vertical portion, is configured to press against a connection shaft 25 b of a latch 25 described later.
[0019]
When the lid 8 is opened, there is a gap between the peripheral wall 20 of the recess 19 and the operation knob 23 so that the finger can be put on the lower surface of the operation knob 23.
[0020]
As shown in FIG. 3, the latch 25 has a U-shape in plan view and is slidably provided in the front-rear direction, and includes latch pieces 25a, 25a corresponding to upper and lower sides of the U-shape. And a connecting shaft 25b connecting the latch pieces 25a, 25a. Each of the front end portions of the latch pieces 25a has a tapered surface 25c having a triangular cross section (in the example in the figure, the lower side is a triangular shape whose front is rising), and the tapered surface 25c is provided on a vertical portion of the lid cover 17 facing the tapered surface 25c. It is urged forward by an engagement spring 27 so as to protrude from the through hole 29, and is engaged so as to overlap with the lower surface of the engagement portion 9 of the frame 4 when the lid 8 is closed.
[0021]
An operation projection 30b is provided in front of the latch button 21 so that a lock operation section (in the example in the figure, an operation projection 30b projects in the center of the guide base 30a) 30 penetrates the upper lid 16 and can be operated from the outside. The guide base 30a is provided to protrude, and is slidably movable in the left-right direction. In the inside of the lid 8, a latch restricting piece (for example, a stainless wire is formed by bending a stainless wire into a centrally protruding roughly arcuate shape) which is joined to the lock operation portion 30 with the lock operation portion 30 by force fit (forcibly fitting) or bonding. 31 is provided, and is slidable in the left-right direction together with the lock operation unit 30. Note that the lock operation section 30 and the latch regulating piece 31 may be integrally formed of a resin material or the like. When the lock operation portion 30 is moved rightward (lock direction) as shown in FIG. 3, the tip portions 31a, 31a of the latch restricting piece 31 face the latch pieces 25a, the through holes 25d provided on the side faces of the latch pieces 25a, The latch 25 cannot be moved in the front-rear direction. On the other hand, when the lock operation portion 30 is moved to the left (release direction), the tip portions 31a, 31a of the latch restricting piece 31 come off from the through holes 25d, 25d on the side of the latch pieces 25a, 25a. Can be moved.
[0022]
A clockwise rotation force in FIG. 1 is applied to the latch button 21 through the connection shaft 25b by the engagement spring 27 so that the latch button 21 is stabilized at a predetermined position when the lid 8 is closed. A stop rib 28 extending upward from the bottom of the recess 19 is provided to prevent a finger from entering the inside of the lid 8 when the latch button 21 is operated.
[0023]
A silicone rubber packing 37 having a U-shaped cross section is attached to the periphery of the inner cover 18, and a gap 38 is provided between the inner cover 18 and the cover 17 via a packing 37 by fixing means such as a screw. And watertight. A cylindrical boss 40 is erected from a portion near the hinge portion 15 of the lid cover 17, and a steam vent hole 42 is provided on an upper surface of the boss 40 to allow steam to escape. A water stop valve 44 made of spherical stainless steel is housed between the boss 40 and the inner lid 18 so as to be movable up and down. When the lid 8 is normally closed, the water stop valve 44 sits on the inner lid 18. The steam vent hole 42 is open. When the body falls, the water stop valve 44 moves upward to close the steam vent hole 42. When the lid 8 is closed, the packing 37 is in close contact with the upper opening flange of the inner container 3 so that the inner container 3 and the inner lid 18 are watertight, and the heated steam in the inner container 3 is provided on the inner lid 18. The air is discharged from the small hole 39 through the gap 38 to the boss 40 through the steam vent hole 42 through the steam outlet 45 provided in the upper lid 16.
[0024]
The operation of the electric water heater having the above configuration will be described. In order to open the lid 8 and fill the inner container 3 with water from the state shown in FIG. 1, first, the lock operation unit 30 is operated to the left (release position). In this state, since the tip portions 31a, 31a of the latch restricting piece 31 interlocked with the lock operation section 30 do not fit into the through holes 25d, 25d of the latch pieces 25a, 25a, the latch 25 is movable in the front-rear direction. It has become.
[0025]
Next, when a finger is placed on the lower surface of the operation knob 23 of the latch button 21 and rotated about the shaft 22 so as to be pulled upward, the opening / closing piece 24 integrated with the operation knob 23 also moves counterclockwise about the shaft 22. Then, the connection shaft 25b is pushed rearward against the spring force of the engagement spring 27, and the latch 25 is moved rearward, whereby the tip of the latch piece 25a is provided on the frame body 4. The lid 8 can be opened by disengaging from the fitting portion on the lower surface of the engaging portion 9. In this case, the lid 8 can be held when the angle is slightly opened by 90 degrees. At this time, when the operation knob 23 is released, the latch 25 and the opening / closing operation knob 23 return to their original positions by the spring force of the engagement spring 27.
[0026]
Next, in the process of filling the inner container 3 with water and then closing the lid 8, first, the tapered surface 9a of the frame 4 and the tapered surface 25c of the lid 8 are in contact with each other. Is slightly pressed downward with a fingertip, the downward force becomes a force to move the latch 25 backward by the action of the tapered surfaces 9a and 25c. As a result, the latch 25 resists the spring force of the engagement spring 27. Then, the cover 8 is fitted to the lower surface of the engaging portion 9 by overcoming the peak of the tapered surface 9a of the engaging portion 9 and the cover 8 can be completely closed.
[0027]
Here, by operating the lock operation unit 30 in the right direction (lock position), the lid 8 cannot be opened even if the latch button 21 is operated. In other words, since the distal end portions 31a, 31a of the latch restricting piece 31 interlocking with the lock operating portion 30 fit into the through holes 25d, 25d of the latch pieces 25a, 25a, the latch 25 cannot be moved in the front-rear direction. 8 does not open.
[0028]
Thereafter, when the power is turned on, the water in the inner container 3 is heated and boiled by the heating element 14 and then kept at a high temperature (about 97 ° C.). The steam being heated is discharged from the steam discharge port 45 of the upper lid 16 through the small hole 39 of the inner lid 18 and the vapor vent hole 42, which are the steam passages 46.
[0029]
At the time of tapping, when the tap switch 46 provided on the upper part of the beak portion 6 of the frame 4 is pressed, the electric motor 13 is rotated, whereby the pouring pump 11 is driven and the hot water in the inner container 3 is discharged through the pouring path 10. Hot water can be discharged from the discharge port 7 through the outlet.
[0030]
As is apparent from the above description, in the present embodiment, the lock operation section 30 is operated to directly prevent the movement of the latch 25 that holds the lid 8 in the closed state, so that a reliable lock mechanism is obtained. Can be. Further, in this locked state, even if the container body falls down, the movement of the latch 25 is restricted, so that the lid 8 does not open, and the functions of the safety valve 12 and the water stop valve 44 work together. The hot water in the inner container 3 does not flow out. Further, since the operation of the lock mechanism of the lock operation unit 30 can be confirmed by the lid assembly alone, it is possible to eliminate the malfunction of the lid opening / closing mechanism after the assembly of the body.
[0031]
(Second embodiment)
FIGS. 4 and 5 are views showing the vicinity of a lid in an electric water heater according to a second embodiment of the present invention. FIG. 4 is a partial cross-sectional view of an opening / closing mechanism of the lid, FIG. 4A is a cross-sectional view immediately before a finger is put on a latch to open the lid, and FIG. FIG. 4 is a cross-sectional view when a finger is put on the latch for the purpose. FIG. 5 is a plan view of the lid. Note that the second embodiment is different from the first embodiment only in the periphery of the opening / closing mechanism of the lid, and the description of other parts is omitted and the same parts are denoted by the same reference numerals.
[0032]
In FIG. 4, a rectangular plate-shaped latch restricting piece 50 is formed on the lid cover 17 at a position inside the lid 8 facing the recess 19 of the upper lid 16.axisAt 51, it is pivoted so as to form a seesaw structure and its support shaft51Is perpendicular to the moving direction of the latch 25. One end in front of the latch regulating piece 50 that performs the seesaw operation has a substantially L-shaped shape as viewed in the axial direction and has a downward vertical wall 50a. An elastic body 52 such as a compression spring is disposed between the upper lid 16 and the latch restricting piece 50 so that a downward force is always applied to the vertical wall 50a. A long groove 53 is provided on the upper surface of the connection shaft 25b of the latch 25, and the vertical wall 50a of the latch regulating piece 50 is formed so as to fit into the long groove 53 when the latch button 21 is not operated.
[0033]
On the other hand, a square hole 54 is provided in the peripheral wall 20 of the recess 19 of the upper lid 16, and a substantially L-shaped lock operation portion 55 is provided in the square hole 54 so as to be rotatable in a side view. Specifically, one end of the lock operation portion 55 is pivotally supported by a wall near the upper side 54 a of the square hole 54, and the other end of the lock operation portion 55 passes near the lower side 54 b of the square hole 54 and is located at the rear (vertical) What is the wall 50aaxis51 on the opposite side). The L-shaped corner portion 55 a of the lock operation portion 55 is provided so as to protrude outward from the peripheral wall surface 20 of the recess 19 via the latch restricting piece 50 by the urging force of the elastic body 52.
[0034]
The operation of the lid of the water heater according to the second embodiment will be described. When the lid 8 is closed, the vertical wall 50a of the latch regulating piece 50 is fitted into the long groove 53 of the connecting shaft 25b of the latch 25. Therefore, even if the latch button 21 is operated, the latch 25 does not move. Does not open. When opening and closing the lid 8, the curved portion 55 a of the lock operation portion 55 protruding from the peripheral wall portion 20 of the recess 19 is pressed down, so that the rear portion of the latch regulating piece 50 is also pressed against the urging force of the elastic body 52. The latch button 21 is operated because the vertical wall 50a of the latch regulating piece 50 is raised by the seesaw effect and the fitting with the long groove 53 of the connecting shaft 25b is released, ie, the regulation of the latch 25 is released. Then, the latch 25 moves, and the lid 8 can be opened and closed.
[0035]
When the cover 8 is opened and closed and the hand or finger is released from the latch button 21 or the lock operation section 55, the latch 25 returns to the original position by the urging force of the engagement spring 27, and the latch is regulated by the urging force of the elastic body 52. Since the vertical wall 50a of the piece 50 also fits into the original long groove 53, the latch 25 does not move even if the latch button 21 is operated, so the lid 8 does not open. That is, when the lock operation unit 55 is not pressed down, the lid 8 does not open. That is, there is no need to perform a lock operation so that the lid 8 is not opened, and the lock is always locked. Therefore, even if the latch button is inadvertently touched or the container falls down, the lid does not open, so that no hot water leaks from the inner container 3. In particular, since the lock operation portion is provided in the recessed portion, there is no case where the lock is released against the intention.
[0036]
Further, when the cover 8 is normally opened, a finger 56 is inserted into the recess 19 in order to pinch the latch button 21. At this time, the dimensional relationship is such that the curved portion 55a of the lock operation portion 55 is pressed down at the same time. Therefore, when a finger is inserted between the latch button 21 and the lock operation portion 55 provided in the recess 19 for operation, the finger inevitably touches and depresses the lock operation portion 55. When opening and closing, the two-step operation (two-step operation) of operating the lock operation unit 55 and then operating the latch button 21 can be used as if it were a one-step operation requiring only one operation. Will be better. In addition, by setting the positional relationship such that a finger cannot simultaneously touch the latch button 21 and the lock operation unit 55 only by touching the lid 8 from the surface, careless release of the lock or opening of the lid may occur. I won't.
[0037]
(Third embodiment)
6 to 8 are explanatory views of an electric water heater according to a third embodiment of the present invention. FIG. 6 is a cross-sectional view of a main part of the opening / closing mechanism of the lid, FIG. 6A is a cross-sectional view of a main part in a state where the latch button cannot be operated, and FIG. 6B is a state in which the latch button can be operated. It is principal part sectional drawing of. FIG. 7 is an exploded perspective view for schematically explaining the opening / closing mechanism of the lid, and FIG. 8 is a plan view of the lid. The third embodiment is different from the second embodiment only in the periphery of the opening / closing mechanism of the latch of the lid, and the description of other parts is omitted, and the same parts are denoted by the same reference numerals.
[0038]
6 to 8, an elongated slit hole 61 is provided in the left and right direction above the rear surface of the peripheral wall 20 of the recess 19, and a cover 62 is provided so that the slit hole 61 can be slid in the front and rear direction. When the cover 62 moves forward as shown in FIG. 6A, the recess entrance 63 is covered, and a finger for operating the latch button 21 cannot be put in. On the other hand, when the cover 62 moves rearward as shown in FIG. 6B, a recess entrance 63 appears, and a finger for operating the latch button 21 can be inserted into the recess 19. The cover 62 is made of resin and has a substantially flat plate shape as shown in FIG. 7. A central oval hole (substantially oblong hole) 64 elongated in the front-rear direction on a surface facing the lower surface of the upper lid 16, and a left side of the cover 62. An elongated left oval hole (substantially oblong hole) 65 is provided in the left-right direction.
[0039]
Reference numeral 66 denotes a lock operation portion, in which two bosses are provided on a circular rotary knob 66a in the same direction, and one is a rotary boss 66b provided at the center of the rotary knob 66a. The other one is an opening / closing boss 66c penetrating through the left oval hole 65 of the cover 62. A round hole 67 for insertion of the rotary boss 66b and an arc hole 68 for insertion of the opening / closing boss 66c are provided in the rear part of the concave portion 19 of the upper lid 16. The lower end of the opening / closing boss 66c is close to the protruding portion rear surface 25e of the connection shaft 25b of the latch 25, and the protruding portion rear surface 25e is formed in an arc shape so that the opening / closing boss 66c can rotate around the rotating boss 66b. I have. Reference numeral 69 denotes a rotation shaft attached to the cover 17.
[0040]
In order to assemble the components, first, the cover 62 is inserted into the slit hole 61. The cover 62 is horizontally slidable along the back surface of the upper lid 16 in the front-rear direction. Next, the lock operation part 66 is inserted into the round hole 67 and the arc hole 68 of the upper lid 16 from above. Specifically, the rotation boss 66b of the lock operation part 66 is in the round hole 67 of the upper lid 16 and the central oval hole 64 of the cover 62, and the opening / closing boss 66c is in the arc hole 68 of the upper lid 16 and the left oval hole 65 of the cover 62. insert. After the insertion, when the rotation boss 66b is fitted to the rotation shaft 69, the rotation knob 66a protruding from the upper surface of the upper lid 16 becomes rotatable, and the opening / closing boss 66c also rotates with this rotation. , The movement of the cover 62 in the front-rear direction. The rotation angle of the rotary knob 66a is determined from the position where the cover 62 completely covers the recess entrance 63 (the state shown in FIG. 6A, in which the rotary boss 66b and the opening / closing boss 66c are at the X position in FIG. 7). This corresponds to a position where the recess entrance 63 is completely opened (the state shown in FIG. 6B, in which the rotary boss 66b and the opening / closing boss 66c are at the Y position in FIG. 7). The “closed” position of the lock operation unit 66 in FIG. 8 corresponds to the X position in FIG. 7, and the “open” position of the lock operation unit 66 in FIG. 8 corresponds to the Y position in FIG. Therefore, by rotating (rotating) the rotary knob 66a between “closed” and “open”, the cover 62 slides in the front-rear direction between X and Y of the central oval hole 64 according to the amount of rotation. To open and close the recess entrance 63.
[0041]
When the rotary knob 66a is at the "closed" position, the lower end of the opening / closing boss 66c is at the position (X position) facing the protruding portion rear surface 25e of the connecting shaft 25b in FIG. For this reason, the connection shaft 25b, ie, the latch 25, is prevented from moving in the front-rear direction. While the rotary knob 66a is rotated in the “open” direction (Y direction) from this position, the opening / closing boss 66c comes off the rear surface 25e of the protruding portion. Here, when the opening / closing boss 66c is located between X and Z on the rear surface 25e of the protruding portion, the movement of the latch 25 is restricted by the opening / closing boss 66c and the lid 8 cannot be opened. , The movement of the latch 25 is not restricted by the opening / closing boss 66c, so that the lid 8 can be opened.
[0042]
Here, when the opening / closing boss 66c is between X and Z, the amount of movement of the cover 62 to the rear is reduced so that a finger for operating the latch button 21 does not enter from the recess entrance 63. When the opening / closing boss 66c is located between Z and Y, the amount of movement of the cover 62 to the rear is increased so that a finger for operating the latch button 21 enters from the recess entrance 63, that is, the Z position, The width of the rear surface 25e of the protrusion is determined. Further, when the rotary knob 66a reaches the "closed" position or the "open" position, or when the rotary knob 66a separates from the position, a click feeling is provided, thereby improving the operational feeling.
[0043]
Regarding the operation of the lid opening / closing mechanism according to the third embodiment, the normal rotation knob 66a, that is, the lock operation section 66 is kept at the "closed" position except when the lid 8 is opened / closed. In this case, since the cover 62 covers the recess 19 for operating the latch button 21, the latch button 21 cannot be operated, and the lid 8 does not open. Further, if the lock operation part 66 is at the “closed” position, the lid 8 does not open even if the body falls down because the movement of the latch 25 is regulated by the opening / closing boss 66c. Further, the presence of the cover 62 makes it difficult for dust and the like to accumulate in the concave portion 19, has a good appearance, and facilitates cleaning such as wiping the upper lid 16.
[0044]
Furthermore, since the locked state of the opening / closing mechanism of the lid can be recognized by the opened / closed state of the cover 62, the locked state can be easily confirmed even from a place slightly away from the body, and the possibility of forgetting to lock can be reduced.
[0045]
Next, when it is necessary to open the lid 8 such as when pouring water into the inner container or when cleaning the inside, if the lock operation part 66 is set to the “open” position, the recess 19 is covered. Since the cover 62 is retracted and the movement of the latch 25 by the opening / closing boss 66c is released, the lid 8 can be opened by operating the latch button 21 with a finger.
[0046]
【The invention's effect】
As described above, according to the present invention, by operating the lock operating portion provided on the lid of a container such as an electric water heater, the latch restricting piece interlocked with it operates the latch of the latch engaged with the lid. Because the movement is directly regulated, the lid can be locked securely, and even if the body such as an electric water heater falls down, the latch will move due to the impact and the lid will open or loose, and water in the container etc. This has an excellent effect that the water does not flow out.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an electric water heater according to a first embodiment of the present invention.
FIG. 2 is a plan view of the electric water heater of FIG.
FIG. 3 is an exploded perspective view for schematically explaining an opening / closing mechanism of a lid in the electric kettle of FIG. 1;
FIG. 4 is a partial cross-sectional view of an opening / closing mechanism of a lid in an electric water heater according to a second embodiment of the present invention, where (a) is a cross-sectional view immediately before a finger is put on a latch, and (b) is a cross-sectional view. Is a sectional view when a finger is put on the latch.
FIG. 5 is a plan view of the electric water heater according to a second embodiment of the present invention, which is viewed mainly from a lid.
FIG. 6 is a cross-sectional view of a main part of an opening / closing mechanism of a lid in an electric water heater according to a third embodiment of the present invention, and FIG. 6 (a) is a cross-sectional view of a main part in a state where a latch button cannot be operated. And (b) is a sectional view of a main part in a state where the latch button can be operated.
FIG. 7 is an exploded perspective view schematically illustrating an opening / closing mechanism of the lid in FIG. 6;
FIG. 8 is a plan view of the electric water heater of FIG.
FIG. 9 is a sectional view of a lid of a conventional electric water heater.
[Explanation of symbols]
3 inner containers
4 Frame
8 Lid
9 Engagement part
15 Hinge
19 recess
21 Latch button
25 Latch
30, 55 Lock operation unit
31, 50 Latch regulating piece
52 compression spring (elastic body)
62 cover
63 recess entrance

Claims (6)

An inner container for water,
A frame for holding the inner container,
A lid body that opens and closes the upper opening of the inner container,
A hinge portion rotatably supporting the lid on the frame,
A latch that is provided on the opposite side of the hinge portion and is movably provided on the lid, engages with an engagement portion formed on the frame, and holds the lid in a closed state;
Operated when opening the lid, a latch button for releasing the engagement with the engagement portion by moving the latch is provided separately from the latch on the lid,
A latch regulating piece for directly regulating the movement of the latch is further provided on the lid so as to be movable separately from the latch button and in a direction different from the moving direction of the latch,
A lock operation part in which an operation protrusion for operating the latch restricting piece to a restricting position for directly restricting the movement of the latch and a release position for enabling the movement of the latch projects outward from the surface of the lid slides on the lid. A lid structure for a container, which is provided freely. An inner container for water,
A frame for holding the inner container,
A lid body that opens and closes the upper opening of the inner container,
A hinge portion rotatably supporting the lid on the frame,
A latch that is provided on the opposite side of the hinge portion and is movably provided on the lid, engages with an engagement portion formed on the frame, and holds the lid in a closed state;
Operate when opening the lid, and release the latch button, which releases the engagement with the engagement portion by moving the latch, so that the operation portion faces the lid surface. Be prepared,
A latch regulating piece for regulating the movement of the latch is provided inside the lid so that one end thereof fits into the groove of the latch to regulate the movement of the latch,
An elastic body for applying a force in a direction in which one end of the latch restricting piece fits into the groove of the latch is provided,
By applying a force toward the inside of the lid to the pressing portion, one end of the latch restricting piece is removed from the groove of the latch, and the lock operating portion for releasing the restriction of the latch is moved more than the wall of the concave portion of the lid. A lid structure for a container, characterized in that it is provided so as to protrude outward, and when the lock operation portion is pressed against the urging force of the elastic body, the latch restriction by the latch restriction piece is released. An inner container for water,
A frame for holding the inner container,
A lid body that opens and closes the upper opening of the inner container,
A hinge portion rotatably supporting the lid on the frame,
A latch that is provided on the opposite side of the hinge portion and is movably provided on the lid, engages with an engagement portion formed on the frame, and holds the lid in a closed state;
Operate when opening the lid, and provide a latch button in the recess of the lid to release the engagement with the engaging portion by moving the latch.
A latch regulating piece for regulating the movement of the latch is further provided on the lid,
A latch regulating piece is pivotally mounted at a position facing the recess inside the lid so as to form a seesaw structure with a support shaft perpendicular to the direction of movement of the latch, and one end of the latch regulating piece fits into a groove formed in the latch. The latch operating portion is formed so as to restrict the movement of the latch by applying a force in a direction in which one end of the latch restricting piece fits into the groove. Is provided in a hole in the recessed wall of the lid so that the lock operating portion projects outwardly from the recessed wall via the latch restricting piece by the biasing force of the elastic body, and resists the biasing force of the elastic body. The lid structure of the container, wherein the restriction by the latch restriction piece is released when the lock operation part is pressed. The container according to claim 2, wherein when the latch button is operated with a finger to open the lid, the pressing part of the lock operation part is provided at a place where the finger inevitably touches. Lid structure. An inner container for water,
A frame for holding the inner container,
A lid body that opens and closes the upper opening of the inner container,
A hinge portion rotatably supporting the lid on the frame,
A latch that is provided on the opposite side of the hinge portion and is movably provided on the lid, engages with an engagement portion formed on the frame, and holds the lid in a closed state;
Operate when opening the lid, and provide a latch button on the lid side to release the engagement with the engaging portion by moving the latch.
A latch restricting piece for restricting the movement of the latch is further provided on the lid side,
With the lock operation part for operating this latch restricting piece facing the lid surface or near it,
The latch button is a lever-type member, one of which is rotatably attached to a recess provided in the upper portion of the lid, and a recess for inserting a finger for operating the latch button in conjunction with the operation of the lock operation unit. A cover that opens and closes so as to cover the entrance is provided, the cover has a substantially oblong hole elongated in the front-rear direction and a substantially oblong hole elongated in the left-right direction, and when the lock operation unit is in the operation position for regulating the latch, The recess entrance is covered by the cover,
The lock operation unit is provided with a rotation center boss and an opening / closing boss below the rotation knob protruding from the upper surface of the lid, attaching the rotation center boss to the lid so that the rotation knob is rotatable, and attaching the rotation center boss to the cover. arranged so as to penetrate the longitudinal direction in an elongated substantially oval hole, the opening and closing bosses arranged so as to penetrate the thin long substantially oval holes in the lateral direction of the cover, substantially rotational movement of the rotary knob and the opening and closing boss A lid structure for a container, wherein the operation is converted into an operation of opening and closing a recess entrance of a cover in an anteroposterior direction via an oblong hole. 6. The opening / closing boss of the lock operation section, wherein the lower end of the opening / closing boss is located at the rear end of the latch when the rotary knob is at the position for closing the cover, and is a restricting piece for restricting the movement of the latch. The lid structure of the container according to 1.

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