JPH0126284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lid for an air pot, which pumps air into the pot by the pressure of a bellows, and uses the pumped air to pour out liquid in the pot.

Construction of the conventional example and its problems The lid of the conventional air pot of this type was constructed as shown in FIG. That is, 1 is a bellows housed in the lid body 2, and the bellows 1 has an inlet 3 provided at the center of the upper part, and an outlet 4 provided at the center of the lower part. Further, the lid body 2 is provided with a cylindrical portion 6 having an opening 5 at the center of its upper surface, and a plurality of notches 7 at the lower end of the cylindrical portion 6.
In addition, a flange portion 8 extending in the center direction is provided. Reference numeral 9 denotes a pusher mounted in the cylindrical portion 6 so as to be able to move up and down. A circumferential portion 11 having a slightly smaller diameter, a plurality of guide portions 12 extending radially from the circumferential portion 11 and loosely fitting into the notch 7 of the flange portion 8, A plurality of stoppers 13 protruding toward the side and a cross-shaped rib 14 erected at the center of the back surface of the disc portion 10 are provided. Reference numeral 15 indicates a check valve loosely fitted into the inlet port 3 of the bellows 1, and 16 indicates the inlet port 3 of the bellows 1.
It is a return spring that releases the . A protective plate 17 is interposed between the flange portion 8 of the lid body 2 and the bellows 3, and the protective plate 17 is engaged with a rib 19 provided inside the outer cylinder portion 18 of the lid body 2. Reference numeral 20 denotes an operating knob that is attached to the top surface of the lid body 2 so as to be movable in the circumferential direction. Below this operating knob 20, there is a portion of the circumferential portion 11 similar to the guide portion 12 provided on the pusher body 9. A lock lever 23 provided with a fitting pawl 22 that engages with a guide rib 21 provided on the side is screwed into the lock lever 23 with a screw 24.
It's stuck in place. 25 is a lid cover that covers the lower surface of the lid body 2.

Next, the operation of the air pot lid constructed as described above will be explained.

First, when the operation knob 20 is rotated to the side where the pusher body 9 is prevented from moving downward, the pusher body rotates, and the lower end of the guide portion 12 provided on the circumferential portion 11 of the pusher body 9 is locked to the flange portion 8 provided on the lower end of the cylindrical portion 6 of the lid body 2, so that the pusher body 9 is rotated. Downward movement is prevented. However, since the pushing body 9 is interlocked with the operating knob 20, even if the operating knob 20 is operated to the safe side, that is, to the side that prevents the pushing body 9 from moving downward, the pushing body 9 may be inadvertently moved. When the upper surface is turned and pushed in the direction in which the push body 9 moves downward, the operation knob 20 is easily interlocked and the guide portion 1 of the push body 9 is moved.
2 is loosely fitted into the notch part 7 without being locked to the flange part 8 of the lid body 2, and as a result, the pusher body 9 is moved down and the liquid inside the pot is poured out to the outside and the hot water is poured out. There were problems such as causing burns. In order to solve this problem, in order to prevent the pusher 9 from easily moving downward even if the upper surface of the pusher 9 is turned in the direction of downward movement and pushed, the rotating operation of the operating knob 20 is controlled by a press-contact rib. However, in this case, the operation of the operation knob 20 inevitably becomes heavy, resulting in extremely poor operability. Also, when the pusher 9 moves downward, the pusher 9
When the end of the top surface of the pusher 9 is pressed, the pusher 9 is tilted and pressed.
There was a problem that the guide part 12 and the end face of the notch part 7 of the lid body 2 were fitted, and the pusher body 9 did not return. Therefore, the suction port 3 of the bellows 1 is not closed,
It also had serious drawbacks, such as the liquid inside the pot being automatically discharged to the outside due to internal pressure.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a lid for an air pot that has a simple structure and can improve the safety and operability of the pump mechanism.

Structure of the Invention In order to achieve the above object, the lid body of the air pot of the present invention has a lid body incorporating a telescopic bellows for air pressure feeding, and a cylindrical part that comes into contact with the inner cylinder part of the lid body. , a pusher body that can be raised and lowered to press the bellows; a lever that selectively prevents the pusher from going up and down; a lever that faces a window hole provided in the lid body; and a lever that faces a window hole provided in the lid body; a lock knob integrally formed with an operation part facing the exposure hole of the lock knob, and a protection plate interposed between the pushing body and the bellows and interlocked with the lever;
The protective plate is provided with a cylindrical part, and this cylindrical part is inscribed in the cylindrical part of the pushing body, and the protective plate is vertically attached to the inner surface of the outer peripheral part of the lid main body when the pushing body is locked. The outer periphery is provided with an outer periphery that engages with a plurality of ribs protruding in the direction, and has a cutout groove that loosely fits with the plurality of ribs when the pusher is unlocked, allowing the pusher to move up and down. a first engaging piece that guides the lifting and lowering of the pushing body and restricts its rotation, and a second engaging piece that holds the first engaging piece from both sides; are provided on each of the push bodies, and the protective plate is further provided with a guide plate that holds both sides of the guide plate provided on the lever. According to this configuration, the push body and the operating knob are separated from each other as in the conventional case. Since the lever with the control knob is not interlocked, even if the pusher is turned and pushed carelessly, the lever with the operation knob will not be interlocked, and as a result, the pump mechanism can be simplified. In addition, the pushing body and lock knob are each provided with an engaging piece to guide the lifting and lowering of the pushing body and to control the rotation period of the pushing body. Since the lever is equipped with a guide plate on the protection plate so as to hold both ends of the guide plate provided on the lever, these two
Due to the two guide actions, the pushing body does not tilt.
It can be raised and lowered smoothly.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 2 to 5, 26 is a pot body, and a lid body 28, which can be opened and closed by a pivot 27, is placed on the top. 29
is a bellows housed in the lid body 28. The lid main body 28 is provided with an inner cylindrical portion 31 having an opening 30 at the center of its upper surface, and a plurality of first protrusions 32 are formed at the lower end of the inner cylindrical portion 31.
An outer cylindrical portion 33 is provided on the outer periphery of 8, and this outer cylindrical portion 33
A plurality of ribs 34 projecting in the vertical direction are provided on the inner surface of the
It is integrally formed from synthetic resin. 3
Reference numeral 5 denotes a pusher body which is provided in the inner cylindrical portion 31 so as to be able to rise and fall freely and has a cylindrical portion 36;
A flange portion 37 that engages with the lower end of the inner cylindrical portion 31 of the lid body 28 is provided below the flange portion 37 .
A plurality of second protrusions 38 provided at the lower end of the pot, a notch 39 that engages with the first protrusion 32, and a notch 39 provided on the upper surface of the pot body 26 for storing a cylindrical container 40 with a bottom. A lock knob 46 is integrally formed of synthetic resin with a hook 43 that is removably engaged with the receiving claw 42 of the spout body 41, and an operating portion 45 that faces the exposure hole 44 provided on the front surface of the lid body 28. A second engaging piece 48 is integrally formed of synthetic resin and engages with a substantially linear first engaging piece 47 provided on both sides of the pushing body 35 to guide the lifting and lowering and restrict the rotation.
A cross-shaped rib 49 is integrally formed from synthetic resin at the center of the back surface.

Reference numeral 50 denotes a check valve loosely fitted into the center of the upper part of the bellows 29. The check valve 50 is always urged upward by a spiral return spring 51 built into the bellows 29. The suction port 52 is opened, and the check valve 50 is locked by a plurality of protrusions 53 provided at its lower end. 54 is check valve 5
This is a seal ring provided at 0. Reference numeral 55 denotes a protective plate interposed between the pushing body 35 and the bellows 29, and a cylindrical body that accommodates the protective plate 55 and the bellows 29 and is housed in and inscribed in the cylindrical portion 36 of the pushing body 35. portion 56 and the check valve 50,
and a ring-shaped portion 57 provided on the upper surface of the bellows 29.
The ring hole 58 is fitted loosely into the ring hole 58, and the inner cylinder part 31 and the outer cylinder part 33 which hang down from the upper surface of the lid main body 28 are installed so as to be movable in the circumferential direction. The pusher body 3 is interlocked with the guide plate 62 of the lever 61, which has an operation knob 60 facing the pusher body 35 selectively in the window hole 59 provided therein.
A guide plate 63 that holds both sides of the guide plate 62 is integrally formed with a synthetic resin so as to also serve as a guide for raising and lowering the protective plate 55 when the protective plate 55 is raised and lowered.
The outer peripheral portion 64 extending from the lower end surface of the cylindrical body portion 56 to the outer periphery is provided with a recess 72 for preventing the lock knob 46 set on the lid body 28 from coming into contact with the second engagement piece 48 of the pusher body 35. , outer cylinder part 33 of the lid main body 28
A notch groove 65 that slidably engages with a plurality of ribs 34 protruding in the vertical direction is provided on the inner surface of the body, and when the pusher body 35 is at the upper end position, the notch groove 65 and the ribs 34 engage with each other. The protective plate 55 is made rotatable due to the disconnection.
Further, a guide hole 66 is provided into which a plurality of second projecting pieces 38 provided at the lower end of the flange portion 37 of the pushing body 35 are inserted only when the pushing body 5 is raised and lowered.

Reference numeral 67 denotes a lid cover, and the lid cover 67 is provided with a support portion 69 in the center thereof that locks the boss portion 68 of the bellows 29, and the bellows 29 is attached to the lid body 2.
Store in 8. Reference numeral 70 denotes a lid packing attached to the lower end of the boss portion 68 of the bellows 29 that is engaged with the lid cover 67. When the lid body 28 is closed, the lid packing 70 comes into contact with the inner lid 71 of the pot body 26, thereby separating the bellows 29 and the container. 40.

Next, the operation of the air pot lid configured as described above will be explained. first,
The return spring 51 allows the lid main body 2 to open via the check valve 50.
When the pushing body 35 , which is biased against the upper part of the pushing body 8 , is pressed, the plurality of second projecting pieces 38 provided at the lower end of the flange part 37 of the pushing body 35 push the outer peripheral part 6 of the protection plate 55 .
The cross-shaped rib 49 of the pushing body 35 presses the check valve 50, and the seal ring 54 closes the intake port 52 of the bellows 29. While pressing the bellows 29 via the check valve 50, the pushing body 3
The bellows 29 is pressed and compressed by the flange portion 37 of the bellows 29 through the protection plate 55, and air is thereby forcedly fed from the inside of the bellows 29 into the container 40. Note that the pusher body 35 has a cylindrical portion 36 that is connected to the lid body 2.
The lock knob 46 is guided by the inscribed surface of the inner cylindrical portion 31 of 8 and is set on the lid body 28 at the same time.
Since the second engagement piece 48 that engages with the substantially linear first engagement piece 47 provided on both sides of the lid body 28 guides its vertical movement and restricts its rotation, the inner cylindrical portion 3 of the lid body 28
The pushing body 35 moves up and down smoothly with less inclination and no rotation. Furthermore, the pusher body 35 is slidable on a cylindrical body portion 56 housed in and inscribed within the pusher body 35 and on a plurality of ribs 34 vertically protruding from the inner surface of the outer cylinder portion 33 of the lid body 28. Since the protection plate 55 is moved up and down together with the notch groove 65 that engages with the guide plate 65 and the guide plate 63 provided to hold both sides of the guide plate 62 of the lever 61, it is more reliable and easier to operate. The value will be high.

On the other hand, when not in use, if the operating knob 60 of the lever 61 is moved in the circumferential direction opposite to the position where the pusher body 35 can be raised and lowered, the guide plate 62 provided on the lever 61 allows the guide plate 62 to The protection plate 55 integrally formed with the guide plate 63 rotates so as to hold both sides of the rib 34 , and the notch groove 65
It comes off from above. Even if the pushing body 35 is pressed in this state, the notched groove 65 and the rib 34 do not correspond to each other, so the pushing body 35 does not move downward, and therefore the container 40
The liquid inside will not be poured out. As a result, even if the pushing body 35 is pressed by mistake, the liquid content will not be poured out, making it extremely safe.

As described above, according to this embodiment, the protection plate 55 interposed between the pusher body 35 and the bellows 29 is protected by the lever 61 provided with the operating knob portion 60 that selectively prevents the pusher body 35 from rising and lowering. By rotating, the lifting and lowering of the pushing body 35 is regulated, and the pushing body 35
is not interlocked with the lever 61, so the pusher 3
Even if 5 is turned and pushed, the pushing body 35 does not move downward. Further, the pushing body 35 is engaged with a first engaging piece 47 provided on the lock knob 46, and is slid in the vertical direction by a second engaging piece 48 that guides the lifting and lowering and restricts the rotation. The body 35 does not rotate. Therefore, the lever 61 provided with the operating knob portion 60
The rotation operation may be such that it does not move due to vibrations, etc.

Further, when the pushing body 35 is raised and lowered, the cylindrical part 36 provided on the pushing body 35 and the inner cylindrical part 31 provided on the lid body 28 come into contact with each other, and the cylindrical part 5 provided on the protection plate 55
6 is inscribed in the cylindrical portion 36 of the pushing body 35, and is guided and buffered by the guide plate 62 provided on the lever 61 and the guide plate 63 provided on the protection plate 55.
The pushing body 35 has a reduced inclination with respect to the inner cylindrical portion 31 of the lid body 28, and as a result, the lifting and lowering operations are smooth. Therefore, the pump mechanism in the lid of this air pot has a simple structure to improve safety. It can be made into something with better operability.

Effects of the Invention As described above, according to the present invention, the pusher body and the lever provided with the operating knob do not interlock with each other as in the conventional case, but the protective plate interposed between the pusher body and the bellows and the lever Since the pusher is linked with the pusher, even if the pusher is turned and pushed carelessly, the pusher will not move downwards.As a result, the pump mechanism has a simple configuration that improves safety and operability. In addition, the push body and the lock knob are each provided with an engaging piece to guide the lift up and down of the push body and to restrict the rotation of the push body, and the protection plate and lever are provided with a guide plate provided on the lever. Since the guide plates are provided on the protection plate so as to hold both ends of the push body, the push body can be smoothly raised and lowered without being tilted due to these two guide actions.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of the lid of a conventional air pot.
Fig. 2 is a longitudinal sectional view of an air pot equipped with a lid according to an embodiment of the present invention, Fig. 3 is an exploded perspective view of the lid, Fig. 4 is a half-mounted sectional view of the lid, and Fig. 5. is a sectional view of a main part of the lid. 26... Pot body, 28... Lid body, 29...
...Bellows, 31...Inner cylinder part, 33...Outer cylinder part,
34... Rib, 35... Push body, 36... Cylindrical part, 40... Container, 41... Spout body, 42...
Receiving claw, 43... Hanging claw, 44... Exposure hole, 45...
Operation portion, 46...Lock knob, 47...First engagement piece, 48...Second engagement piece, 55...Protection plate, 56...Cylinder part, 59...Window hole, 60... ...Operation knob, 61...Lever, 62...Guide plate,
63... Guide plate, 64... Outer periphery, 65... Notch groove.

Claims (1)

[Claims] 1. A lid body with a built-in telescopic bellows for air pressure feeding, a push body that has a cylindrical part that comes into contact with the inner cylinder of the lid body and is movable up and down to press the bellows, and this push body a lever with an operating knob facing a window hole provided in the lid main body, and a lock knob integrally formed with an operating knob facing an exposure hole on the front surface of the lid main body;
A protective plate is interposed between the pushing body and the bellows and interlocked with the lever, the protective plate is provided with a cylindrical body part, and the cylindrical body part is inscribed in the cylindrical part of the pushing body. The protection plate is provided with an outer circumferential portion that engages with a plurality of ribs vertically protruding from the inner surface of the outer cylindrical portion of the lid main body when the pusher is locked, and the protection plate is provided with an outer peripheral portion that engages with a plurality of ribs vertically protruding from the inner surface of the outer cylindrical portion of the lid body, and when the pusher is locked. A first engagement that is provided with a notched groove in the outer peripheral portion that loosely fits into the plurality of ribs and allows the pushing body to move up and down when released, and further guides the up and down movement of the pushing body and restricts rotation. A push plate is provided with a second engagement piece that serves as a lock knob, and a second engagement piece that holds the first engagement piece from both sides, and the protection plate further includes a guide plate that holds both sides of the guide plate provided on the lever. An air pot lid with a guide plate to hold it.