JP2009072072A - Floor cushion with warming function, and warming apparatus used for the floor cushion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply, readily and rapidly separate a warming unit from a cushion, and to clean the cushion and comfortably warm a pet or a human body on the cushion, using a warming plate. <P>SOLUTION: A floor cushion with a warming function is equipped with the cushion 2 having a center hole 5 and the warming unit 1 arranged so as to be demountable from the central hole 5 of the cushion 2. The warming unit 1 is provided with the warming plate 3, having an external shape larger than the internal shape of the central hole 5, and a heating part 4 thermally connected and linked to the undersurface of the warming plate 3 and having an external shape arranged in the center hole 5 of the cushion 2. In the floor cushion with the warming function, the heating part 4 of the warming unit 1 is introduced into the center hole 5 of the cushion 2, and the warming plate 3 is placed on the top surface of the cushion 2 with the warming unit 1 mounted freely detachably in the cushion 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cushion provided with a heating function and a heating device used for the cushion, and more particularly to a cushion with a heating function optimal for pets and a heating device used for the cushion.

  Pet cushions have been developed. (See Patent Documents 1 to 3) Patent Document 1 is made by molding a plastic with good heat retention effect, fixing a container filled with a heat storage material containing a heater inside, and covering the upper surface with a cloth with good heat retention effect. It describes a warmer for pets. Patent Document 2 describes a pet cushion in which a flexible sealing bag body is filled with a heat retaining liquid and stored in a protective storage cover together with a cushion material. Furthermore, patent document 3 has described the cushion for pets which made the soft cloth into the bag shape and provided the heat retention warmer in the inside. The pet cushions described in these publications have a drawback that they cannot be easily washed when the pet gets dirty or urine adheres.

Moreover, although it is not for pets, a cushion used by a person and heated by a disposable body warmer or the like has been developed. (See Patent Document 4)
JP 2005-198637 A Utility Model Registration No. 3073621 Japanese Utility Model Publication No. 61-182259 Japanese Utility Model Publication No. 1-1119654

  In the publication of Patent Document 4, a space part is provided in the center, a heating part such as a disposable body warmer is disposed here, and a far-infrared radiation member in which a far-infrared radiation ceramic is coated on a cloth is inserted on both sides to be bonded on both sides. A cushion is fixed to the inner peripheral surface with a tape and the bottom of the space is closed with a lid. This cushion is used mainly by people with bad habits and sits down, and has the characteristic of not causing pain to the anus when sitting. However, this cushion cannot be easily replaced with cloth that emits far-infrared rays, so it cannot be easily cleaned when it gets dirty, and it cannot be removed cleanly with urine, etc. There are disadvantages that cannot be used.

  The present invention has been developed for the purpose of solving these conventional drawbacks. An important object of the present invention is that the heating unit can be easily and quickly separated from the cushion to clean the cushion, and the pet and human body on the cushion can be comfortably heated by the heating plate. The object is to provide a cushion with a temperature function and a heating device used for the cushion.

The seat cushion with a heating function of the present invention has the following configuration in order to achieve the above-described object.
The cushion with a heating function includes a cushion 2 having a center hole 5 and a heating unit 1 disposed so as to be attached to and detached from the center hole 5 of the cushion 2. The heating unit 1 is connected to the heating plate 3 having an outer shape larger than the inner shape of the center hole 5 and the lower surface of the heating plate 3 by thermal coupling, and is disposed in the center hole 5 of the cushion 2. And a heat generating part 4 having an outer shape. A cushion with a warming function allows the heating unit 1 of the warming unit 1 to be placed in the center hole 5 of the cushion 2 and the warming plate 3 is placed on the upper surface of the cushion 2 so that the warming unit 1 can be attached to and detached from the cushion 2. It is attached to.

  The heating cushion 4 of the heating unit 1 includes a warmer 10 that heats the surface with a built-in battery 11.

  Further, according to claim 3 of the present invention, the heating cushion 4 with the heating function includes a battery 11 that can be charged by the warmer 10 that is the heat generating portion 4, a heater 13 that is heated when energized by the battery 11, and is heated by the heater 13. The heat radiating plate 14 is thermally coupled to the heating plate 3.

  Furthermore, the seat cushion with a heating function according to claim 4 of the present invention is such that the inner surface of the center hole 5 is inclined so that the inner diameter is gradually increased upward, and the outer periphery of the heating plate 3 is formed on the inclined surface 5A. The part is set.

  Furthermore, in the cushion cushion with a heating function according to claim 5 of the present invention, the cushion 2 has a circular outer shape and a center hole 5.

  A heating device for a cushion according to claim 6 of the present invention includes a heating unit 1 arranged so as to be detachable from a cushion 2 having a center hole 5. The heating unit 1 is connected to the heating plate 3 having an outer shape larger than the inner shape of the center hole 5 and the lower surface of the heating plate 3 by thermal coupling, and is disposed in the center hole 5 of the cushion 2. And a heat generating part 4 having an outer shape. In this heating device, the heating unit 4 is placed in the center hole 5, the heating plate 3 is placed on the upper surface of the cushion 2, and the heating unit 1 is detachably attached to the cushion 2.

  The heating device for a cushion of Claim 7 of the present invention includes a heating unit 4 in which the heating unit 4 of the heating unit 1 is thermally coupled to the heating plate 3 and a case 8 in which the warming unit 10 is stored. The warmer 10 includes a battery 11 that can be charged, a heater 13 that is energized by the battery 11 and generates heat, and a heat dissipation plate 14 that is heated by the heater 13. The case 8 accommodates the warmer 10 at a position where the heat dissipation plate 14 of the warmer 10 faces the inner surface of the heating plate 3, and a heat conducting member 53 is disposed between the heat dissipation plate 14 and the heating plate 3. Yes. Furthermore, the case 8 includes a pressing portion 52 that presses the stored warmer 10 and presses the heat radiating plate 14 to the inner surface of the heating plate 3 in a thermally coupled state.

  The heating device for a cushion according to claim 8 of the present invention includes a heating unit 1 arranged so as to be detachable from a cushion 2 having a center hole 5. The heating unit 1 is connected to a heating plate 3 having an outer shape larger than the inner shape of the center hole 5 and a lower surface of the heating plate 3 and has an outer shape disposed in the center hole 5 of the cushion 2. The heat generating part 4 is provided. The heating unit 4 has a structure that can accommodate a heater that is thermally coupled to the heating plate 3. In this warming device, a heater is housed in the heat generating part 4, the heat generating part 4 is placed in the center hole 5, the heating plate 3 is placed on the upper surface of the cushion 2, and the heating unit 1 is made into the cushion 2. Wear detachable.

  The seat cushion with the heating function and the warming device for the seat cushion of the present invention are characterized in that the heating unit can be easily and quickly removed from the cushion to clean the cushion. That is, the heating cushion for the seat cushion and the cushion for heating of the present invention has a heating part in the center hole of the cushion, and a heating plate larger than the center hole connecting the heating parts is placed on the upper surface of the cushion. This is because the heating unit is mounted and connected to the cushion. The cushion and the heating device can be easily removed from the cushion by pulling up the heating unit from the center hole, and can be easily placed at a fixed position in the center hole.

  Furthermore, the seat cushion with the heating function and the warming device for the seat cushion of the present invention are characterized in that the pet or the human body placed on the cushion can be comfortably heated with the heating plate. This is because the heating part is placed in the center hole and the heating plate is placed on the cushion, and the heating part is thermally coupled to the lower surface of the heating plate.

  According to a second aspect of the present invention, the heating cushion of the heating unit includes a warmer that heats the surface of the heating unit with a battery. This cushion can warm the heating plate to a comfortable temperature with batteries. Also, a warmer heated by a battery can comfortably warm the heating plate for a long time simply by replacing or charging the battery.

  Furthermore, the seat cushion with a heating function according to claim 3 of the present invention uses a warmer including a battery that can be charged, a heater that generates heat when energized by the battery, and a heat radiating plate that is heated by the heater as a heating part. The heat sink of the warmer is thermally coupled to the heating plate. This cushion can be used comfortably by thermally coupling the heat sink of the warmer to the heating plate and heating the heating plate wider than the heat dissipation plate.

  Furthermore, the seat cushion with a heating function according to claim 4 of the present invention is such that the inner surface of the center hole is inclined so as to gradually increase the inner diameter upward, and the outer peripheral portion of the heating plate is placed on the inclined surface. It is set. With this structure, the heating plate can be disposed at a position slightly lower than the upper surface of the cushion. For this reason, the pet can stably ride on the heating plate, and when the human body uses it, the heating plate does not strongly press the body surface, and can comfortably contact and warm to an appropriate temperature.

  Furthermore, since the cushion cushion with a heating function according to claim 5 of the present invention has a circular outer shape and center hole of the cushion, the entire shape of the cushion can be used as a donut shape and can be conveniently used without any directionality.

  Furthermore, the heating device for the cushion of Claim 7 of the present invention includes a heating unit in which a heating portion of the heating unit is thermally coupled to a heating plate, and a case for storing the warming plate. However, it is equipped with a heat dissipation plate that is heated by a heater that energizes the built-in battery and generates heat, and a warmer is housed in the case so that the inner surface of the heat dissipation plate and the heating plate face each other. A heat conducting member is disposed between the plate and the heating plate. In addition, the heating device includes a pressing portion that presses the warmer that is stored and presses the heat radiating plate in a thermally coupled state to the inner surface of the heating plate. Therefore, this warming instrument can heat the warming plate efficiently with the warmer by reliably thermally coupling the heat dissipating plate and the warming plate of the warmer housed in the case via the heat conducting member. In particular, since this warming device can be thermally coupled in a state in which the warmer is pressed by the pressing portion so that the heat radiating plate of the warmer, the heat conducting member and the warming plate are in close contact with each other, the heat generated by the warmer is heated from the heat radiating plate. It is possible to conduct heat reliably.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies a seat cushion with a heating function and a heating device for the seat cushion for embodying the technical idea of the present invention, and the present invention is a seat cushion with a heating function and a seat cushion. The following heating equipment is not specified.

  Further, in this specification, for easy understanding of the scope of claims, numbers corresponding to the members shown in the embodiments are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The cushion with heating function shown in FIGS. 1 to 3 is used as a cushion for pets, or as a cushion used by a person. This cushion includes a cushion 2 and a heating unit 1 connected to the cushion 2 so as to be detachable. The heating unit 1 is used as a heating device that is detachably attached to the cushion 2.

  The cushion 2 has a predetermined thickness and outer shape, and a central hole 5 is provided in a central portion so as to penetrate vertically. The cushion 2 is softened so that an elastic material 6 such as cotton, non-woven fabric, plastic foam or the like is put inside or a flexible elastic material 6 such as soft plastic is formed so that a pet or person can be elastically deformed on the surface. ing. The cushion has a free thickness of about 5 cm on which no pets or people can rest. However, since the thickness of the cushion is set to an optimum value depending on the application, it can be set to 2 cm to 10 cm, for example.

  Further, the cushion 2 of FIG. 2 has a circular outer shape and a central hole 5. The circular cushion 2 has an outer diameter of 20 to 50 cm and an inner diameter of the center hole 5 of 5 to 10 cm. However, the outer diameter and inner diameter of the cushion are set to optimum values depending on the application, for example, small for a small pet and large for a person or a large pet. The cushion 2 having a circular outer shape and inner shape is formed by connecting a surface sheet 7 cut into a disk shape with a predetermined width by sewing the outer peripheral edge and the inner peripheral edge with a sewing machine or the like, and filling the inside with an elastic material 6 Produced. The cushion 2 having a circular outer shape and inner shape can be conveniently used without specifying the direction when used and when the heating unit 1 is set while having a clean and beautiful design. However, the cushion does not necessarily have a circular outer shape and inner shape. For example, although not shown, the cushion may be a polygon or an ellipse.

  As shown in the cross-sectional view of FIG. 3, the center hole 5 of the cushion 2 allows the heating unit 1 to be smoothly inserted, and the heating plate 3 of the heating unit 1 is slightly from the upper surface of the cushion 2, for example, 5 mm. In addition, it is inclined so as to gradually increase the inner diameter so as to be arranged at a position lowered by 3 cm. Furthermore, the cushion 2 in FIG. 3 has a vertically symmetrical shape. This cushion 2 can be conveniently used without any distinction between the upper and lower sides, that is, the upper and lower sides are reversed. For example, if the upper surface becomes dirty, it can be used upside down.

  As shown in FIGS. 2 to 4, the heating unit 1 is connected to the heating plate 3 having an outer shape larger than the inner shape of the center hole 5 of the cushion 2 and the lower surface of the heating plate 3 by thermal coupling. And a heat generating portion 4 having an outer shape disposed in the central hole 5 of the cushion 2. This heating unit 1 has a heat generating portion 4 placed in a central hole 5 and a heating plate 3 is placed on the upper surface of the cushion 2 so as to be detachably attached to the cushion 2.

  The heating plate 3 is a metal plate excellent in heat conduction such as an aluminum plate. The heating plate 3 is larger than the inner shape of the center hole 5 of the cushion 2 so as not to come out of the center hole 5. The heating plate 3 of FIG. 3 is set at a position lower than the upper surface of the cushion 2 as an outer shape on which the outer peripheral portion is placed on the inclined surface 5A of the center hole 5. With this structure, the vertical position of the heating plate 3 with respect to the cushion 2 can be controlled by adjusting the outer shape of the heating plate 3. The heating plate 3 can be made small and low with respect to the cushion 2 and can be made large and high. In the cushion of the present invention, the outer peripheral portion of the heating plate is not necessarily arranged on the inclined surface of the center hole. This is because the cushion 2 is elastically deformed by the weight of the heating unit 1, so that the cushion 2 can be deformed and the heating plate 3 can be disposed at a position lower than the upper surface of the cushion 2.

  The difference between the outer shape of the warming plate 3 and the outer shape of the cushion 2 specifies the width that allows the cushion 2 to be exposed on the upper surface outside the warming plate 3. The outer shape of the heating plate 3 is made smaller than the outer shape of the cushion 2, and the width of the cushion 2 exposed on the upper surface is increased. On the contrary, the heating plate 3 can be enlarged by increasing the outer shape of the heating plate 3. Therefore, the outer shapes of the heating plate 3 and the cushion 2 are set to optimum values in consideration of the heating area and the required width of the cushion 2 to be exposed. For example, when the heating plate 3 and the cushion 2 are disk-shaped, the outer diameter of the heating plate 3 is set to 1/4 to 2/3 of the outer diameter of the cushion 2. Since the cushion allows a part of the cushion 2 to be exposed on the upper surface, the outer diameter of the heating plate 3 is made smaller than the outer diameter of the cushion 2.

  As shown in FIGS. 4 and 5, the heat generating unit 4 is connected to the lower surface of the heating plate 3 in a thermally coupled state to heat the heating plate 3. The heating unit 4 shown in the figure includes a warmer 10 that is a heater that is thermally coupled to the heating plate 3, and a case 8 that houses the warmer 10 and is connected to the warming plate 3.

  As shown in FIGS. 5 to 8, the warmer 10 includes a battery 11, a case 12 containing the battery 11, a heater 13 that is energized and heated by the battery 11 built in the case 12, A heat dissipation plate 14 that is thermally coupled to the heater 13 and a control circuit 16 that controls the power supplied to the heater 13 are provided. The warmer 10 energizes a built-in heater 13 and heats it with the heat generated by the heater 13. The warmer 10 is characterized in that it can be stably heated to a predetermined temperature over a long period of time. However, this invention does not specify the heater accommodated in the heat generating part as a warmer incorporating a heater. As the heater, a warmer that warms with heat generated by a chemical reaction, such as a disposable warmer, a heat storage material, or the like can be used as a heater.

  The heater 13 is a planar PTC heater 13A. However, in addition to the planar PTC heater, a heater utilizing the heat generated by the transistor, a resistor, etc. can be used as the heater.

  The battery 11 is a prismatic secondary battery 11A made of a prismatic lithium ion secondary battery or a lithium polymer battery. The prismatic secondary battery 11A is sealed by putting an electrode and an electrolytic solution in an outer can formed by pressing aluminum or an aluminum alloy into a square shape. The prismatic secondary battery 11A is a lithium ion secondary battery having a voltage of 3.7V and a capacity of 2000 mAh. The battery 11 can be used for about 8 to 10 hours by heating the heat radiating plate 14 to 42 ° C. to 46 ° C. with a planar PTC heater 13A. However, a lithium polymer battery can also be used as the battery.

  The case 12 has an oval overall planar shape. The cross-sectional shape is also a thin ellipse. The case 12 is made of plastic. The case 12 includes a plastic first case 12A and a second case 12B in which the square secondary battery 11A is built.

  The first case 12 </ b> A is formed in a size that incorporates a square secondary battery 11 </ b> A and a circuit board 17 on which electronic components of the control circuit 16 are mounted. Further, the first case 12A is integrally formed with a connecting rib 21 into which a set screw 20 for connecting the second case 12B is screwed. The connecting ribs 21 are provided so as to be positioned at the four corners of the prismatic secondary battery 11A. Further, the illustrated first case 12A is provided with an operation portion 39 of the power switch 19 on the surface thereof. The power switch 19 shown in FIG. 7 is a slide switch. Therefore, the operation unit 39 is connected to the first case 12A so as to be slidable in a direction in which the power switch 19 can be switched on and off.

  The second case 12 </ b> B is provided with a peripheral wall 22 that fixes the heat radiating plate 14 around the body plate 15. The body plate 15 closes the opening of the first case 12A that houses the prismatic secondary battery 11A. The main body plate 15 is formed in a plate shape along the flat surface of the square secondary battery 11A. An adjustment sheet 18 for controlling heat conduction is disposed on the flat surface of the main body plate 15 and the square secondary battery 11A, and the heat conduction between the planar PTC heater 13A as the heater 13 and the square secondary battery 11A is performed. Can be controlled. By using a sheet having a low thermal conductivity as the adjustment sheet 18, the thermal conduction between the planar PTC heater 13 </ b> A and the square secondary battery 11 </ b> A can be reduced. The heat conduction between the planar PTC heater 13A and the square secondary battery 11A can also be controlled by the thickness of the main body plate 15 and the heat conductivity.

  The second case 12 </ b> B fixes the heat radiating plate 14 to the upper end edge of the peripheral wall 22 and arranges the heat radiating plate 14 on the surface of the case 12. The heat radiating plate 14 closes the opening of the peripheral wall 22 provided in the second case 12B. The opening of the peripheral wall 22 is equal to the outer shape of the heat dissipation plate 14. Further, the peripheral wall 22 is provided with a step portion 23 for fitting the outer peripheral edge portion of the heat radiating plate 14 along the upper edge. The second case 12B has a shape in which the lower end edge of the peripheral wall 22 is connected to the outer peripheral edge of the first case 12A. A planar PTC heater 13A is disposed between the main body plate 15 and the heat radiating plate 14 in a state where the heat radiating plate 14 is fixed to the second case 12B. The square secondary battery 11A is disposed between the bottom plate 24 and the main body plate 15 of the first case 12A. The planar PTC heater 13A is disposed between the main body plate 15 and the heat radiating plate 14, and directly heats the heat radiating plate 14 to heat the square secondary battery 11A via the main body plate 15. .

  The planar PTC heater 13A has a substantially disk shape and is disposed on the upper surface of the main body plate 15 of the second case 12B. The heat dissipation plate 14 is fixed by being thermally coupled to the planar PTC heater 13A, and the planar PTC heater 13A heats the heat dissipation plate 14. When the planar PTC heater 13A is energized and the temperature rises to the set temperature, the electrical resistance increases rapidly and the current is substantially cut off. Accordingly, the planar PTC heater 13A has a function of controlling the temperature below the set temperature by itself, and the maximum temperature can be made lower than the set temperature without using a control circuit for controlling the temperature. However, the planar PTC heater 13A can also control the temperature by controlling the current to be applied. The flat PTC heater 13A has silver-plated electrodes formed on both surfaces thereof, and power is supplied by contacting the surfaces of the PTC heater 13A while pressing the metal plates 25 and 26. That is, the planar PTC heater 13 </ b> A is disposed at a fixed position between the main body plate 15 and the heat radiating plate 14 with both surfaces sandwiched between the two metal plates 25 and 26. The metal plates 25, 26 are formed by extending bent pieces 25 A, 26 A so as to penetrate the main body plate 15, and these bent pieces 25 A, 26 A are electrically connected to the circuit board 17.

  The heat radiating plate 14 is made of a metal plate having excellent heat conduction such as aluminum or copper. The heat radiating plate 4 is disposed on the upper surface of the second case 12B, and is connected to the second case 12B in a state where the outer peripheral edge is fitted to the step portion 23 provided at the boundary between the periphery of the body plate 15 and the peripheral wall 22. The The heat radiating plate 14 shown in the figure has a protruding piece 14A provided at one end inserted into a recess 27 provided inside the stepped portion 23, and a set screw 28 inserted through a screw hole 14B provided at the other end is provided in the second case. Screwed into 12B and fixed in place.

  A circuit diagram of the warmer 10 is shown in FIG. The warmer 10 in this circuit diagram includes a control circuit 16 that controls the power supplied from the square secondary battery 11A that is the battery 11 to the planar PTC heater 13A that is the heater 13, and a temperature sensor that detects the temperature of the heat radiating plate 14. 30. The control circuit 16 controls the power supplied to the planar PTC heater 13A to control the temperature of the planar PTC heater 13A, that is, the temperature of the heat dissipation plate 14.

  The control circuit 16 is provided between the battery 1 and the planar PTC heater 3A and is connected in series with the power switch 19 and a control unit 32 including a microcomputer that controls the switching element 31 on and off. Is provided. In this warmer 10, the planar PTC heater 13 </ b> A is connected in series with the battery 11 via the switching element 31, so that the planar PTC heater 13 </ b> A is also used in the protection circuit of the battery 11. For example, even if the switching element 31 is internally short-circuited or welded and held in the ON state, the planar PTC heater 13A has a suddenly large electrical resistance at a set temperature, and the current is substantially cut off, thereby Because it protects.

  The control unit 32 controls the temperature of the heat dissipation plate 14 by controlling the duty for switching the switching element 31 on and off at a predetermined cycle. It is possible to increase the temperature of the planar PTC heater 13A, that is, to increase the temperature of the heat radiating plate 14, by increasing the time during which the control unit 32 turns on the switching element 31. On the other hand, the control unit 32 can shorten the ON time of the switching element 31 to lower the temperatures of the planar PTC heater 13A and the heat radiating plate 14. Further, the control unit 32 can control the duty of the switching element 31 with a signal from the temperature sensor 30 that detects the temperature of the heat radiating plate 14 to set the planar PTC heater 13 </ b> A and the heat radiating plate 14 to the set temperature. .

  The control circuit 16 includes a memory 33 that stores a set temperature in the control unit 32. The control unit 32 controls the duty for switching the switching element 31 on and off so that the planar PTC heater 13 </ b> A has a set temperature stored in the memory 13. The control unit 32 does not necessarily need to control the temperature with the duty by switching the switching element 31 on and off at a predetermined cycle. The control unit 32 switches off the switching element 31 when the planar PTC heater 13A becomes higher than the set temperature in response to a signal from the temperature sensor 30, and turns on the switching element 31 when the planar PTC heater 13A becomes lower than the set temperature. It is also possible to maintain the planar PTC heater 13A at the set temperature by controlling to switch to.

  Further, the warmer 10 shown in FIGS. 7 and 8 includes a display LED 29. The LED 29 is fixed to the circuit board 17 built in the case 12, and the lighting state is controlled by the control circuit 16. The lighting state of the LED 29 is controlled to display the operating state of the warmer 10, for example, the on / off state of the power switch 19, the heating state of the heater 13, and the remaining capacity of the battery 11. The control circuit 16 stores a lighting pattern for lighting the LED 29 in the memory 33 of the control unit 32. For example, when the remaining capacity of the battery 11 is displayed, the control circuit 16 can change the blinking cycle of the LED 29 according to the degree of the remaining capacity and display the difference in the remaining capacity in stages. In the illustrated warmer 10, the first case 12A disposed below the LED 29 is made of a light-transmitting plastic. This case 12 can transmit the light emitted from the LED 29 and display it outside without providing an opening window for exposing the LED 29. However, the case can be displayed on the outside by providing an opening window so that the LED is exposed from the case.

  Further, the warmer 10 of FIG. 8 has a charging circuit 35 for the battery 11 built in the case 12. The charging circuit 35 is mounted on the circuit board 17 built in the case 12. The charging circuit 35 includes a charge control unit 36 that charges a lithium ion secondary battery or a lithium polymer battery that is the square secondary battery 11A. This charging control unit 36 charges the square secondary battery 11A with constant current / constant voltage, detects full charge, and stops charging. Further, the charging circuit 35 shown in the figure has a protective FET 37 connected in series with the rectangular secondary battery 11A, and the protective FET 37 is controlled by the protective circuit 38. The protection circuit 38 detects overcharge or overdischarge of the battery 11 and controls the protection FET 37 to be turned on / off. When the charged battery 11 is fully charged and overcharged, the protection circuit 38 switches off the protection FET 37 and stops charging. When the discharged battery 11 is overdischarged, the protection circuit 38 switches off the protection FET 37 to stop the discharge of the battery 11.

  The warmer 10 in the circuit diagram of FIG. 8 is connected to the AC adapter 40, and direct current for charging the battery 11 is input from the AC adapter 40. The warmer 10 is provided with a DC jack 34 for connecting the AC adapter 40, and the DC jack 34 is connected to the charging circuit 35. Since the warmer 10 does not include a circuit for converting the commercial power source into the charging voltage of the battery 11, the charging circuit 35 can be made small. However, the warmer can be directly connected to a commercial power source to charge the battery. Although not shown, this warmer is provided with an AC plug so that it can be folded into a case, and this AC plug is connected to a power outlet to charge a built-in battery. This warmer includes a charging circuit with a built-in circuit for converting a commercial power source into a battery charging voltage, and the battery is charged by this charging circuit.

  The above body warmer 10 is detachably housed in the case 8 and heats the heating plate 3. The warmer 10 is housed in a fixed position of the case 8 in a state where the heat radiating plate 14 is thermally coupled to the heating plate 3. A case 8 shown in FIGS. 4 and 5 accommodates the body 10 inside, a case main body 41 to which the heating plate 3 is connected on the upper surface, and a lid that detachably closes the opening at the lower end of the case main body 41. And a body 42. As shown in FIG. 9, the case 8 is inserted and removed from the opening 43 of the case body 41 with the lid 42 removed.

  As shown in FIG. 4, the case main body 41 has the heating plate 3 connected to the upper end of a circular cylindrical portion 41 </ b> A that accommodates the warmer 10. The case body 41 shown in the figure has a dish shape formed by connecting a circular flange 41B to the outer periphery of the upper end of the cylinder portion 41A, and the outer periphery of the heating plate 3 is placed on and connected to the upper surface of the flange 42B. Yes. The flange 41 </ b> B has an outer shape substantially equal to the outer shape of the heating plate 3. Further, the case body 41 is integrally formed with a connecting boss 45 into which a set screw 44 for connecting the heating plate 3 is screwed. The case main body 41 is integrally formed with the connecting boss 45 in four directions on the upper end portion of the cylindrical portion 41A. The heating plate 3 has a plurality of screw holes 3 </ b> A into which set screws 44 are screwed. The set screws 44 inserted through the screw holes 3 </ b> A are screwed into connecting bosses 45 to be connected to the case body 41. .

  Furthermore, the heating unit 1 shown in the figure has a ring-shaped and sheet-shaped packing 46 laminated between the flange portion 41 </ b> B of the case main body 41 and the heating plate 3. This structure can connect the heating plate 3 and the case body 41 to a watertight structure. The heating unit 1 can effectively prevent urine or the like excreted by a pet from entering the case 8 to adversely affect the warmer 10 or cause odors. Since the case main body 41 shown in the figure includes a flange 41B along the outer peripheral portion of the heating plate 3, the outer peripheral portion of the heating plate 3 can be supported from below and the deformation of the heating plate 3 can be prevented. There is. However, the case main body does not necessarily need to be provided with a collar portion, and the upper end of the cylindrical portion can be connected to and supported by the central portion of the heating plate.

  The outer diameter of the cylindrical portion 41 </ b> A of the case main body 41 is substantially equal to or slightly smaller than the inner diameter of the center hole 5 so that it can be disposed in the center hole 5 of the cushion 2. Further, the cylinder portion 41A is provided with a storage portion 47 for storing the body 10 therein. 4 and 9 is integrally provided with a partition wall 48 having a shape along the outer periphery of the warmer 10, and the inner side of the partition wall 48 serves as a storage portion 47 of the warmer 10. Since the overall shape of the warmer 10 shown in the figure is an elliptical shape, the inner shape of the storage portion 47 is an elliptical shape that follows the outer shape of the warmer 10. Further, the cylinder portion 41A shown in FIGS. 4 and 9 is provided with concave portions 49 on both sides of the storage portion 47 in order to make it easy to take out the warmer 10 stored in the storage portion 47. According to this structure, a hand can be easily taken out by inserting a finger into the concave portion 49 and inserting it into the storage portion 47.

  As shown in FIGS. 4 and 9, the lid body 42 is detachably coupled to the opening 43 of the case body 41. The lid body 42 is formed of a plastic having translucency. The lid 42 having translucency can visually recognize the operation state of the warmer 10 accommodated in the case 8 from the outside. For example, the position of the operation part 39 of the warmer 10 in the case 8 can be visually confirmed through the lid 42 to confirm the on / off state of the power switch 19 of the warmer 10, or the light emission of the LED 29 that is the display part of the warmer 10 (Displayed by cross-hatching in FIG. 9) can be confirmed, and the state of charge of the battery 11 can be confirmed.

  The lid body 42 shown in the figure has a cap shape capable of closing the opening 43 of the cylinder portion 41A, and has a peripheral wall 42B around a circular bottom plate 42A. The lid body 42 can be connected to the cylinder portion 41A with a locking structure. The locking structure shown in the figure includes a fitting male screw 50 provided on the inner surface of the peripheral wall 41A of the lid body 42 and a fitting female screw 51 provided on the outer peripheral surface of the lower end portion of the cylindrical portion 41A. The lid body 42 is screwed and connected to the cylindrical portion 41 </ b> A in a state where the fitting male screw 50 is fitted to the fitting female screw 51. However, the locking structure between the lid and the cylinder is not limited to the above structure, and can be any other structure that can be detachably connected to the cylinder.

Furthermore, the lid body 42 shown in FIG. 4 is provided with a pressing portion 52 that protrudes inward at the center portion of the bottom plate 42A. As shown in FIG. 5, the pressing portion 52 presses the warmer 10 housed in the tubular portion 41 </ b> A from the lower surface to add the heat radiating plate 14 of the warmer 10 in a state where the lid 42 is connected to the tubular portion 41 </ b> A. The inner surface of the warm plate 3 is pressed in a thermally coupled state. However, the case does not necessarily need to be provided with a protruding portion on the bottom plate to be a pressing portion, and an elastic body may be disposed between the bottom plate and the warmer to form the pressing portion. As this elastic body, one that can elastically press the body against the inner surface of the heating plate, such as a coil spring or a rubber-like elastic body, can be used.
Further, instead of providing a protruding portion on the bottom plate to form a pressing portion, the bottom plate 42A is simply planar, and the bottom plate 42A presses the warmer 10 from the lower surface in a state where the lid 42 is connected to the cylindrical portion 41A. It is also good. In this case, the portion of the bottom plate that comes into contact with the warmer 10 becomes the pressing portion.

  Furthermore, the heating unit 1 shown in FIG. 4 and FIG. 5 is configured to conduct heat between the heat radiating plate 14 and the heating plate 3 in order to reliably thermally couple the heat radiating plate 14 of the warmer 10 to the heating plate 3. A member 53 is provided. The heat conducting member 53 shown in the figure is a member having excellent heat conduction, for example, a heat conducting sheet 53A obtained by molding a high heat conducting rubber into a sheet shape. Thus, the heat conductive sheet 53A made of rubber having excellent heat conduction is disposed in a state of being laminated between the heat radiating plate 14 and the heating plate 3, and is in close contact with the surfaces of the heat radiating plate 14 and the heating plate 3. Thus, heat can be conducted very efficiently. In particular, the heat generating part 4 shown in the figure presses the lower surface of the warmer 10 with the pressing part 52 provided on the bottom plate 42 </ b> A of the lid body 42, so that the heat radiating plate 14 of the warmer 10 is thermally coupled to the inner surface of the heating plate 3. Since the pressing is performed, the heat radiation plate 14 of the warmer 10, the heat conductive sheet 53 </ b> A, and the heating plate 3 are thermally coupled to each other so that the heat generated by the warmer 10 can be reliably conducted from the heat radiation plate 14 to the heating plate 3. . Further, the heat conductive sheet 53A is heated together with the heat radiating plate 14 even when the body 10 is again housed in the case 8 after the body 10 is taken out from the case 8 and the battery 11 built in the body 10 is charged. There is also a feature that it can be used repeatedly by being arranged in a stacked state with the plate 3. However, the heat conducting member is not necessarily specified as a heat conducting sheet. For the heat conduction member, a metal plate is bent or bent and formed into a shape along the surface of the heat dissipation plate and the heating plate, or the surface of the heat dissipation plate and the heating plate is elastically pressed to adhere It is also possible to use a structure having the following structure. Further, as the heat conducting member, a heat conducting paste can be applied between the heat radiating plate and the heating plate. For example, silicon grease can be used for the heat conductive paste.

  Furthermore, the lid body 42 is provided with a ring-shaped packing 54 at a boundary portion with the lower end edge of the cylindrical body 41A on the outer peripheral portion of the bottom plate 42A. With this structure, the lid body 42 and the case main body 41 can be connected to the watertight structure. Therefore, it is possible to effectively prevent urine or the like excreted by the pet from entering this case 8 into the case 8 and adversely affecting the warmer 10 or causing odors.

The cushion with a heating function having the above structure is used as follows.
(1) The battery 11 built in the warmer 10 is charged. The warmer 10 is taken out of the case 8 of the heating unit 1 and charged.
(2) The power switch 19 is turned on by operating the operation part 39 of the warmer 10, and after inserting the warmer 10 into the storage part 47 of the case main body 41, as shown in FIG. The lid 42 is closed.
(3) As shown in FIG. 3, the heating unit 4 of the heating unit 1 is placed in the center hole 5 of the cushion 2, and the heating plate 3 is placed on the upper surface of the cushion 2.

  Further, when the use of the cushion cushion with the heating function is stopped, after removing the heating unit 1 from the cushion 2, the lid 42 is removed, and the power switch 19 is switched off by operating the operation unit 39 of the warmer 10. . Further, in this state, the warmer 10 is taken out from the case body 41 and the battery 11 built in the warmer 10 is charged.

  The above-mentioned cushion with a heating function allows the heating unit 1 of the heating unit 1 to be removed from the center hole 5 of the cushion 2 and the heating unit 1 can be taken out of the cushion 2 very easily. Furthermore, the heating unit 1 shown in FIG. 10 has a structure that can be connected to the central hole 5 of the cushion 2 without being detached. In FIG. 10, the same components as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heating unit 1 shown in FIG. 10 has a structure in which a retaining member 60 can be detachably connected to the lower end of the case 68. The illustrated retaining member 60 includes a connecting portion 60A that is detachably connected to the case 68 of the heat generating portion 4, and a flange portion 60B that is connected to the lower end of the connecting portion 60A. The retaining member 60 has an outer shape of the flange portion 60 </ b> B larger than the inner shape of the central hole 5 of the cushion 2 so that the heating unit 1 can be prevented from coming off from the central hole 5. The retaining member 60 shown in the figure has an outer shape in which the flange portion 60 </ b> B is brought into contact with the inclined surface 5 </ b> B on the lower surface side of the center hole 5. However, the retaining member can be arranged on the same plane as the lower surface of the cushion by making the outer shape of the flange portion equal to or slightly larger than the lower surface of the cushion. The retaining member 60 shown in the figure has a connecting portion 60 </ b> A having a cylindrical shape, and has a structure that can be screwed and connected to a connecting cylinder 63 provided protruding from the lower surface of the lid 62 of the case 68. The retaining member 60 having this structure can be easily connected to the case 68. However, the retaining member can be structured so as to be detachably coupled to the case body as an integral structure with the case lid.

  The cushion cushion with a heating function shown in FIG. 10 inserts a retaining member 60 from the opposite side of the center hole 5 in a state where the heat generating portion 4 of the warming unit 1 is placed in the center hole 5 of the cushion 2. Is connected to the case 68 of the heat generating portion 4. The heating unit 1 is disposed in a state in which the upper surface and the lower surface of the center hole 5 of the cushion 2 are sandwiched by the heating plate 3 and the retaining member 60, and is connected to the cushion 2 without being removed. This cushion can hold the heating unit 1 in a state that does not come off the cushion 2 even when the pet is rampaging or playing with the cushion 2.

It is a perspective view of the cushion cushion with a heating function concerning one Example of this invention. It is a disassembled perspective view of the cushion with a heating function shown in FIG. It is sectional drawing of the cushion with a heating function shown in FIG. It is a disassembled perspective view of a heating unit. It is sectional drawing of a heating unit. It is a disassembled perspective view of Cairo. It is the disassembled perspective view which looked at Cairo from the lower side. It is a block diagram of Cairo. It is a disassembled perspective view which shows the state which removed the cover body of the heating unit. It is sectional drawing of the cushion cushion with a heating function concerning the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Heating unit 2 ... Cushion 3 ... Heating plate 3A ... Screw hole 4 ... Heat generating part 5 ... Center hole 5A ... Inclined surface
5B ... Inclined surface 6 ... Elastic material 7 ... Surface sheet 8 ... Case 10 ... Cairo 11 ... Battery 11A ... Square secondary battery 12 ... Case 12A ... First case
12B ... 2nd case 13 ... Heater 13A ... Planar PTC heater 14 ... Radiation plate 14A ... Projection piece
14B ... Screw hole 15 ... Body plate 16 ... Control circuit 17 ... Circuit board 18 ... Adjustment sheet 19 ... Power switch 20 ... Set screw 21 ... Connecting rib 22 ... Peripheral wall 23 ... Stepped portion 24 ... Bottom plate 25 ... Metal plate 25A ... Fold Bending piece 26 ... Metal plate 26A ... Bending piece 27 ... Recess 28 ... Set screw 29 ... LED
DESCRIPTION OF SYMBOLS 30 ... Temperature sensor 31 ... Switching element 32 ... Control part 33 ... Memory 34 ... DC jack 35 ... Charging circuit 36 ... Charge control part 37 ... Protection FET
DESCRIPTION OF SYMBOLS 38 ... Protection circuit 39 ... Operation part 40 ... AC adapter 41 ... Case main body 41A ... Tube part
41B ... buttocks 42 ... lid 42A ... bottom plate
42B ... peripheral wall 43 ... opening 44 ... set screw 45 ... coupling boss 46 ... packing 47 ... storage part 48 ... partition wall 49 ... recess 50 ... fitting male screw 51 ... fitting female screw 52 ... pressing part 53 ... heat conducting member 53A ... heat conduction sheet 54 ... packing 60 ... retaining member 60A ... connecting part
60B ... buttocks 62 ... lid body 63 ... connecting cylinder 68 ... case

Claims (8)

  A cushion (2) having a central hole (5) and a heating unit (1) arranged so as to be removable from the central hole (5) of the cushion (2). The heating plate (3) having an outer shape larger than the inner shape of the center hole (5) and the lower surface of the heating plate (3) are connected by thermal coupling and the center hole (5) of the cushion (2). With the heat generating part (4) of the outer shape arranged in the case, put the heat generating part (4) into the center hole (5), and place the heating plate (3) on the upper surface of the cushion (2) A cushion with a warming function that allows the warming unit (1) to be detachably attached to the cushion (2).   The heating cushion (10) according to claim 1, wherein the heating unit (4) of the heating unit (1) includes a warmer (10) for heating the surface with a built-in battery (11).   The warmer (10), which is the heat generating part (4), can be charged with a battery (11), a heater (13) that is heated when energized by the battery (11), and heat dissipation that is heated by the heater (13). A cushion according to claim 2, further comprising a plate (14), wherein the heat radiating plate (14) is thermally coupled to the heating plate (3).   The inner surface of the center hole (5) is inclined so as to gradually increase the inner diameter upward, and the outer peripheral portion of the heating plate (3) is set on the inclined surface (5A). A cushion with a heating function according to Item 1.   The cushion according to claim 1, wherein the cushion (2) has a circular outer shape and a central hole (5).   A heating unit (1) is provided so that it can be attached to and detached from the cushion (2) with the center hole (5) .The heating unit (1) has a larger outer shape than the inner shape of the center hole (5). A heating plate (3) and a heat generating part (4) having an outer shape disposed in the central hole (5) of the cushion (2) while being coupled to the lower surface of the heating plate (3) by thermal coupling. The heating unit (4) is placed in the center hole (5), and the heating plate (3) is placed on the upper surface of the cushion (2) so that the heating unit (1) can be attached to and detached from the cushion (2). A heating device for cushions to be worn.   The heating unit (1) of the heating unit (1) includes a warmer (10) that is thermally coupled to the warming plate (3), and a case (8) that houses the warmer (10). (10) includes a rechargeable battery (11), a heater (13) that heats when the battery (11) is energized, and a heat dissipation plate (14) that is heated by the heater (13). The case (8) stores the warmer (10) in a position where the heat dissipation plate (14) of the warmer (10) faces the inner surface of the heating plate (3), and the heat dissipation plate (14) and the heating plate (3) is provided with a heat conducting member (53), and further, the heat sink (10) is pressed to heat the heat radiating plate (14) to the inner surface of the heating plate (3). The heating device for a cushion cushion according to claim 6, further comprising a pressing portion (52) for pressing in a combined state. A heating unit (1) is provided so that it can be attached to and detached from the cushion (2) with the center hole (5) .The heating unit (1) has a larger outer shape than the inner shape of the center hole (5). The heating plate (3) is connected to the lower surface of the heating plate (3) and has a heat generating part (4) having an outer shape disposed in the central hole (5) of the cushion (2). The part (4) has a structure that can store a heater that is thermally coupled to the heating plate (3).
Place the heater in the heat generating part (4), put the heat generating part (4) in the center hole (5), and place the heating plate (3) on the upper surface of the cushion (2). A heating device for cushions, which is designed to detachably attach 1) to the cushion (2).

Images