JPH0337630Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a lid locking device for an appliance with a built-in heating element,
In particular, the lid of a portable oxygen inhaler that has a replaceable built-in oxygen generating can containing a chlorate candle and is used as an emergency item when people with respiratory or circulatory system problems have difficulty breathing. This relates to locking devices.

BACKGROUND OF THE INVENTION In a portable oxygen inhaler, the oxygen generating can continues to be heated to a high temperature even after the oxygen generating can has finished generating oxygen. It is extremely dangerous to take out the oxygen generating can from the case body in this state, and many users use it without being aware of this situation. For the oxygen generating can, the oxygen generating can cannot be removed from the case body.

Problems that the invention aims to solve With the above-mentioned conventional portable oxygen generating can, even if you want to replace it with a new oxygen generating can after the oxygen generation from the oxygen generating can has finished, you cannot replace it and cannot use it. Used oxygen generating cans were used uneconomically, with the entire case being thrown away.

The present invention has a device that covers the case body with a lid and locks the lid so that it cannot be opened until the surface temperature of the oxygen generating can falls to a temperature that is safe to touch. This is an attempt to solve the problems of

Means for Solving the Problems The present invention will be explained in detail below based on the drawings. 1 is a case body, 2 is a heat transfer tube, and there is a gap 3 between the inside of the case body 1 and the inner surface of the case body 1. is fixed to form a Reference numeral 4 denotes an oxygen generating can containing a chlorate candle, which is provided with a striking part 5 at one end and an oxygen outlet 6 at the other end, with the striking part 5 facing downward and the heat transfer cylinder 2
is inserted into. A bottom plate 7 covers the bottom of the case body 1 and has a ventilation hole 8 communicating with the cavity 3.
A striking pin 9 is connected to the striking part 5 and is attached to the bottom plate 7. 10 is an actuating device for striking the striking pin 9, which has a hammer 11 for striking the striking pin 9, and an operating lever 12 for operating the hammer 11;
It is attached to the bottom plate 7. Numerals 13 and 13 are lock pieces attached to both sides of the outer periphery of the upper end of the heat transfer cylinder 2 with set screws 14, 14, and these are made of a material that deforms in proportion to temperature changes, such as bimetal or shape memory alloy. They are shaped so that they are in close contact with the outer wall of the heat transfer cylinder 2 while the temperature does not rise, and are separated from the outer wall of the heat transfer cylinder 2 as the temperature rises. A lid 15 is placed over the case body 1 and is shaped to form a cavity 16 above the case body 1 in which a hose and an oxygen mask, which will be described later, can be stored. A cap 17 is attached to the upper end of the lid 15 and is used to open and close the cavity 16. 1
Reference numerals 8 and 18 indicate stoppers that protrude toward the outer wall of the heat transfer tube 2 from positions directly below the lock pieces 13 and 13 on both sides of the inner wall of the lower end of the lid body 15, and are screws 19 and 19. Lid body 15
It is fixed at Reference numeral 20 denotes a support plate attached to the inside of the lid 15 so as to partition a position near the oxygen outlet 6 of the oxygen generating can 4, and has a ventilation hole 21. Reference numeral 22 denotes a connecting pipe that communicates with the oxygen outlet 6 when the lid 15 is placed on the case body 1, and is attached to the support plate 20. 23 is a hose whose one end is connected to the connecting pipe 22, and 24 is an oxygen inhalation mask connected to the other end of the hose 23.

Operation: Remove the cap 17, take out the mask 24 from the cavity 16, and operate the operating lever 12 so that the hammer 11 strikes the striking pin 9. Then, an impact force is applied to the chlorate candle in the oxygen generating can 4, a thermal reaction occurs, and oxygen is generated. The generated oxygen is transferred to the oxygen outlet 6 and the connecting pipe 2.
2. Since the oxygen is sent to the mask 24 through the hose 23, the oxygen can be inhaled by covering the mouth and nose with the mask 24.

The above thermal reaction is carried out from the end of the chlorate candle on the striking part 5 side to the oxygen outlet 6 while generating high heat.
Immediately after the start of the thermal reaction, the striking portion 5 of the surface of the oxygen generating can 4
The side edges are heated intensively. Then, the heat is transferred to the heat transfer tube 2, and its heat capacity lowers the maximum temperature, and the surface temperature of the oxygen generating can 4 is also made uniform, lowering the maximum surface temperature and preventing a fire from occurring in the unlikely event of a fire. Remove the cause. As the above thermal reaction progresses and the amount of heat transferred to the heat transfer cylinder 2 increases, and the temperature of the heat transfer cylinder 2 rises, the lock piece 1
3 and 13 are deformed so as to separate from the outer wall of the heat transfer tube 2 as shown by the dotted line in the second diagram, and this deformation occurs not only while the above thermal reaction is in progress, but also after the above thermal reaction is completed. This continues until the surface temperature of the oxygen generating can 4 drops to a temperature that is safe to touch.
Even if you try to remove the lid 15 from the case body 1 in this state, the deformed lock pieces 13, 1
3 engages with the stoppers 18, 18, so that the lid 15 is locked in the state covered with the case body 1.

Note that the heat transmitted from the oxygen generating can 4 to the heat transfer cylinder 2 is radiated to the gap 3 formed around the heat transfer cylinder 2. Then, the air in the gap 3 is heated and rises through the vent hole 21, and at the same time, air outside the case body 1 is sucked into the gap 3 from the vent hole 8, creating an upward air current. The rising air flows out from the upper end opening of the lid 15 while increasing the flow velocity due to the chimney effect of the cavity 16 of the lid 15, exhibiting an air cooling effect, and reducing the heat transfer action of the heat transfer cylinder 2. Since heat dissipation is promoted, the amount of heat transmitted to the case body 1 and the lid body 15 is small, and the surface temperature thereof is maintained at a safe temperature even when touched by hand.

Therefore, the case body 1 and lid body 15 are made of ABS.
It becomes possible to use a lightweight case body and lid made of plastic such as resin.

The present invention may be configured such that the inner surfaces of the case body 1 and the lid body 15 are plated with metal to further reduce radiant heat transfer from the heat transfer cylinder 2.

Embodiment The case body 1 and the lid 15 are formed into a cylindrical shape or other suitable shape.

A protective cover 26 is attached to the lower end of the case body 1, which is formed to cover the periphery of the actuating device 10 and has a ventilation hole 25.

A guide cylinder 27 is fixed to the upper end of the case body 1 with a pin 28 so as to protrude so as to fit into the inner surface of the lower end of the lid body 15 .

Engagement holes 29, 29 are provided on both sides of the guide tube 23, which are cut downward from the upper end and laterally cut from the cut ends, as shown in the fourth figure. Matching holes 29, 29
Engagement pins 30, 30 are provided protrudingly to be engaged with each other, and when the lid body 15 is placed on the case body 1, each engagement pin 3
0 and 30 are introduced into the respective engagement holes 29 and 29 to prevent the lid 15 from coming off even if the lid 15 is simply pulled up from the case body 1.

The heat transfer tube 2 is made of a material with good thermal conductivity such as aluminum, and is molded to a thickness of, for example, about 5 mm.The lower end of the tube 2 is placed on the bottom plate 7, and is fixed to the bottom plate 7 with screws 31, etc. do.

The striking pin 9 has a pin nut 3 in the center of the bottom plate 7.
It is supported by the pin holder 33 attached in step 2.

In the actuating device 10, for example, as shown in FIG. 1, a lever 35 supporting the hammer 11 is pivotally attached to a bracket 34 fixed to the bottom plate 7 via a shaft 36, and the operating lever 12 is pivoted via a shaft 37. A spring 38 is suspended on the lever 35, and a spring 38 is suspended on the lever 35, and a spring 38 is suspended on the operating lever 12, and a spring 38 is suspended on the lever 35, and a spring 38 is suspended on the operating lever 12, and a spring 38 is attached to the lever 35, and a spring 38 is suspended on the lever 35, and a spring 38 is suspended on the lever 35, and a spring 38 is suspended on the operating lever 12, and a spring 38 is suspended on the lever 35, and a spring 38 is suspended on the operating lever 12, and a spring 38 is suspended on the lever 35 to bias the hammer 11 so as to press the hammer 11 into contact with the striking pin 9. A lever 40 for driving the lever 35 is pivotally mounted on a shaft 41, and a spring 42 is suspended on the lever 40 to urge it into pressure contact with the operating lever 12. A pull ring 43 is connected to the end opposite to the end on the pivot side. In this actuating device, when the pull ring 43 is pulled, the operating lever 12 is moved to the shaft 37.
It is raised using the fulcrum as the fulcrum. In the process lever 4
Since the tip of 0 pushes up the tip of lever 35,
At the same time that the lever 35 moves about the shaft 36, the hammer 11 is released from the striking pin 9.
When the lever 35 moves by a certain angle in this manner, the tip of the lever 35 is disengaged from the lever 40. Then, since the elasticity of the spring 38 acts on the lever 35, the lever 35 and the hammer 11 suddenly return to their original positions, and the hammer 11 strikes the striking pin 9, giving an impact to the chlorate candle. Therefore, when the operation of pulling the pull ring 43 is released,
Since the elasticity of the spring 39 acts on the operating lever 12, the operating lever 12 rapidly returns to its original position. In this process, the tip of the lever 40 is pressed against the tip of the lever 35, so the lever 40 moves away from the operating lever 12 using the shaft 41 as a fulcrum, but when it moves a certain angle, the tip of the lever 40 is removed from the tip of the lever 35. Then, since the elastic force of the spring 42 acts on the lever 40, the lever 40 suddenly returns to its original position.

The lock pieces 13, 13 do not deform or break even if the lid body 15 is pulled by hand, and the stopper 18,
Use one that has the strength to reliably engage with 18. Its strength can be adjusted, for example, by adjusting the thickness of the material used for the lock pieces 13, 13. Further, the temperature at which the locking pieces 13, 13 start locking the lid 15 and the temperature at which the locking is released are different from that of the locking piece 1.
It is possible to set an appropriate temperature by selecting the type or characteristics of the materials used in 3 and 13. In addition, the accuracy of the lock temperature is determined by the lock piece 13,
Adjustment is possible depending on the length of the material used for 13.

The connecting pipe 22 is connected to the oxygen outlet 6 via a nipple 44, and the nipple 44 is always pressed against the oxygen outlet 6 by a spring 48. When the lid 15 is removed from the case body 1, the nipple 44 and the connecting pipe are connected to each other. Since the oxygen generating can 22 is also removed from the oxygen outlet 6, the used oxygen generating can 4 can be taken out and a new oxygen generating can can be inserted into the heat transfer cylinder 2.

As shown in Figure 5, the oxygen inhalation mask 24 has a built-in mark 45 and a spring 46 that presses the mark 45, and has a flow indicator 47 in which the mark 45 is displaced against the elasticity of the spring 46 due to the oxygen supply pressure. In some cases, the configuration is such that it can be attached so that it can be determined whether or not oxygen is being sent from the oxygen generating can 4 to the mask 24.

A large number of grooves are provided on the outer periphery of the case body 1.
By reducing the contact area of the hand with respect to the case body 1, the amount of heat transmitted to the hand may be reduced, or a heat-sensitive label may be attached to display the temperature change of the case body 1.

The present invention may be configured such that various heating elements other than the oxygen generating can 4 are inserted into the heat transfer cylinder 2.

Effects of the invention Since the invention is configured as described above, after generating heat in a heating element such as an oxygen generating can, the lid is closed until the surface temperature of the heating element falls to a temperature that is safe to touch. The body cannot be removed from the case body, and the lid can be removed once the temperature has cooled down to a temperature that is safe to touch, so take out the heating element such as a used oxygen generating can outside the case body, and insert a new one. It is economical because it can be replaced with the heating element, and the heating element does not have to be thrown away together with the case itself.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
FIG. 3 is a bottom view, FIG. 4 is a partial side view with the lid removed from the case body, and FIG. 5 is a diagram showing an example in which a flow indicator is attached to an oxygen inhalation mask. DESCRIPTION OF SYMBOLS 1...Case body, 2...Heat transfer tube, 3...Gap, 4...Oxygen generation can, 5...Blowing part, 7...Bottom plate, 8...Vent hole, 10...Actuation device, 13, 1
3... Lock piece, 15... Lid, 16... Hollow,
17... Cap, 18, 18... Stopper,
23...hose, 24...oxygen inhalation mask.

Claims (1)

[Claims for Utility Model Registration] (1) A heat transfer tube that forms a gap with the inner surface of the case body is fixed inside the case body, and this heat transfer tube includes a chlorate candle having a striking part. Insert an oxygen generating can or other heating element into which an oxygen inhalation mask is connected to the oxygen outlet, and insert the oxygen generating can into the bottom plate of the case body.
A ventilation hole communicating with the above-mentioned gap is provided, and the above-mentioned case body is covered with a lid that forms a cavity above the case body, and a heating element with a built-in heat generating element is attached to the upper end of this lid to open and close the above-mentioned cavity. In the portable appliance, the outer wall of the heat transfer cylinder is provided with a lock piece formed of a material that deforms in proportion to temperature changes, and the lid is provided with a lock piece that deforms in proportion to temperature changes, and the lid body has a lock piece that deforms in proportion to temperature changes.
A lid locking device for a device with a built-in heating element, which is provided with a stopper that engages with the locking piece. (2) The bottom plate of the case body is provided with an actuation device that communicates with the striking part of the oxygen generating can, one end of a hose is connected to the oxygen outlet of the oxygen generating can, and an oxygen inhalation mask is connected to the other end of the hose. A lid locking device for a device with a built-in heating element according to claim 1, which is connected to the utility model. (3) A lid locking device for an appliance with a built-in heating element according to claim 1 or 2 of the utility model registration claim, wherein the inner surfaces of the case body and the lid are metal plated.