CPAP Device

Abstract

To suppress undesired short circuiting in an electric connection part of a main unit and a base unit.SOLUTION: A CPAP device 10 includes: a main unit 20 equipped with a first electric circuit including an air blower and a connection terminal 24 connected to the first electric circuit; and a base unit 30 that can be connected to the main unit 20, and is equipped with a blower tube, a second electric circuit different from the first electric circuit, and a connection terminal 50 connected to the second electric circuit. The main unit 20 includes a first electric connection part including an exposed part of the connection terminal 24 and a first surrounding part for surrounding the first electric connection part. The base unit 30 includes a second electric connection part including an exposed part of a second connection terminal and a second surrounding part for surrounding the second electric connection part. There is a part where a spatial distance Gnr that the first surrounding part and the second surrounding part are opposed to each other is shorter than a spatial distance Gec that a proximity part around the connection terminal 24 in the first electric connection part and a proximity part around the connection terminal 50 in the second electric connection part are opposed to each other.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a CPAP device comprising a main unit and a base unit. [Background technology]

[0002] Patent Document 1 describes a CPAP device that includes a main unit and a base unit. The main unit can be used alone, but may also be used in combination with the base unit.

[0003] When the main unit and the base unit are used in combination, the main unit is attached and fixed to the base unit. In this case, the main unit and the base unit each have electrical contacts (connection terminals) exposed from the housing. The main unit and the base unit are electrically connected by bringing these electrical contacts into contact with each other.

[0004] The CPAP device also includes a container for storing water in the base unit. The CPAP device heats the water in the container, vaporizes it, and supplies it to the user along with the gas to be blown. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2020 / 217843 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the configuration of conventional CPAP devices, when water is supplied to the container or during use, water may get onto the electrical contacts, causing undesirable short circuits, such as short circuits between multiple connection terminals.

[0007] SUMMARY OF THE PRESENT EMBODIMENTS It is therefore an object of the present invention to provide a CPAP device that can suppress undesirable short circuits. [Means for solving the problem]

[0008] The CPAP device of the present invention comprises a main unit having a first electrical circuit including a blower and a first connection terminal connected to the first electrical circuit, and a base unit connectable to the main unit and having an air blower, a second electrical circuit, and a second connection terminal connected to the second electrical circuit.

[0009] The main unit has a first electrical connection portion including an exposed portion of the first connection terminal and a first peripheral portion surrounding the first electrical connection portion. The base unit has a second electrical connection portion including an exposed portion of the second connection terminal and a second peripheral portion surrounding the second electrical connection portion. A first distance at which the first peripheral portion and the second peripheral portion face each other has a portion that is shorter than a second distance at which a nearby portion around the first connection terminal in the first electrical connection portion faces each other and a nearby portion around the second connection terminal in the second electrical connection portion face each other.

[0010] In this configuration, water from outside the first peripheral portion and the second peripheral portion is retained between the first peripheral portion and the second peripheral portion and does not penetrate between the first electrical connection portion and the second electrical connection portion. Effect of the Invention

[0011] According to the present invention, undesired short circuits can be suppressed. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of the appearance of a CPAP device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an external perspective view of the CPAP device according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a side cross-sectional view of a CPAP device according to an embodiment of the present invention. [Figure 4] 4(A) and 4(B) are external perspective views of the main unit according to the embodiment of the present invention. [Diagram 5] FIG. 5(A) is a top view of a main unit according to an embodiment of the present invention, and FIG. 5(B) is a bottom view of the main unit. [Figure 6] 6(A), 6(B), and 6(C) are side views of a main unit according to an embodiment of the present invention, and FIG. 6(D) is a side cross-sectional view of the main unit according to an embodiment of the present invention. [Figure 7] Figure 7(A) is an enlarged bottom view of a portion including a recess formed on the underside of the main unit, and Figure 7(B) is an enlarged side cross-sectional view of a portion including a recess formed on the underside of the main unit. [Figure 8] FIG. 8 is an external perspective view of the base unit according to the embodiment of the present invention. [Figure 9] FIG. 9(A) is a top view of the base unit, and FIG. 9(B) is a side view of the base unit. [Figure 10] 10(A) and 10(B) are side views of the base unit. [Figure 11] Figure 11(A) is an enlarged top view of a portion including a convex portion formed on the top surface of the base unit, and Figure 11(B) is an enlarged side cross-sectional view of a portion including a convex portion formed on the top surface of the base unit. [Figure 12] FIG. 12(A) is an enlarged cross-sectional side view of an electrical connection portion between a main unit and a base unit, and FIG. 12(B) is a diagram showing a concept of preventing water intrusion. [Figure 13] FIG. 13 is an enlarged side cross-sectional view of an electrical connection portion between a main unit and a base unit in the first modification. [Figure 14] FIG. 14 is an enlarged cross-sectional side view of an electrical connection portion between a main unit and a base unit in the second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A CPAP device according to an embodiment of the present invention will be described with reference to the drawings.

[0014] (Overview of CPAP device 10) Figures 1 and 2 are external perspective views of a CPAP device according to an embodiment of the present invention. Figure 3 is a side cross-sectional view of a CPAP device according to an embodiment of the present invention. Figures 1 and 3 show a state in which a main unit is attached to a base unit (a state in which the main unit and the base unit are connected), and Figure 2 shows a state in which the main unit is removed from the base unit.

[0015] As shown in FIGS. 1, 2 and 3, the CPAP device 10 includes a main unit 20 and a base unit 30.

[0016] The main unit 20 is a rectangle having a long dimension and a short dimension in a plan view. Note that the rectangle in this embodiment is not limited to a perfect rectangle, and includes those with various chamfered corners. The outer shape of the main unit 20 is a rectangular parallelepiped, and the height is shorter than the length in the long dimension and the length in the short dimension. Note that the rectangular parallelepiped in this embodiment is not limited to a perfect rectangular parallelepiped, and includes those with various chamfered tops and edges.

[0017] The base unit 30 is a rectangle having a long dimension and a short dimension in a plan view. The base unit 30 has a high back portion and a low back portion, and the high back portion is higher than the low back portion. In other words, the external shape of the base unit 30 is a shape in which a rectangular parallelepiped high back portion and a rectangular parallelepiped low back portion are connected in the long dimension of the base unit 30.

[0018] The main unit 20 can be attached to the upper surface of the low back portion of the base unit 30. When the main unit 20 is attached to the base unit 30, the external shape of the CPAP device 10 is a rectangular parallelepiped.

[0019] In a state where the main unit 20 is attached to the base unit 30 (attached state), the gas flow path of the main unit 20 communicates with the gas flow path of the base unit 30. In addition, the first electric circuit of the main unit 20 and the second electric circuit of the base unit 30 are electrically connected. As a result, the main unit 20 and the base unit 30 work together to realize the functions of the CPAP device 10.

[0020] At this time, water is stored in the base unit 30, and when the main unit 20 is attached to the base unit 30, the CPAP device 10 vaporizes the water to supply gas having a predetermined humidity to the user.

[0021] When the main unit 20 is detached from the base unit 30, the main unit 20 operates independently and realizes the functions of the CPAP device 10.

[0022] The specific details of the mounting state, flow paths, and electrical connections between the main unit 20 and the base unit 30 will be described later, and a specific configuration example of the main unit 20 and the base unit 30 will be described first.

[0023] (Main Unit 20) 4(A) and 4(B) are external perspective views of the main unit according to the embodiment of the present invention. FIG. 4(A) is a view from the top side, and FIG. 4(B) is a view from the bottom side. FIG. 5(A) is a top view of the main unit according to the embodiment of the present invention, and FIG. 5(B) is a bottom view of the main unit. FIG. 6(A), FIG. 6(B), and FIG. 6(C) are side views of the main unit according to the embodiment of the present invention, and FIG. 6(D) is a side cross-sectional view of the main unit according to the embodiment of the present invention. FIG. 6(A) is a view from the short side wall 203 side, FIG. 6(B) is a view from the short side wall 204 side, and FIG. 6(C) is a view from the long side wall 205 side. FIG. 6(D) is a side cross-sectional view from the same side as FIG. 6(C).

[0024] As shown in Figures 4(A), 4(B), 5(A), 5(B), 6(A), 6(B), 6(C), and 6(D), the main unit 20 includes a housing 200.

[0025] The outer shape of the housing 200 is a rectangular parallelepiped having a long dimension (x20 axis direction) and a short dimension (y20 axis direction) and a predetermined height (length in the z20 axis direction). The housing 200 includes an upper wall 201, a lower wall 202, a side wall 203, a side wall 204, a side wall 205, and a side wall 206.

[0026] The upper wall 201 and the lower wall 202 face each other. The side wall 203 and the side wall 204 are parallel to the short dimension direction and face each other. The side wall 205 and the side wall 206 are parallel to the long dimension direction and face each other. The side wall 203, the side wall 204, the side wall 205, and the side wall 206 are connected to the periphery of the upper wall 201 and the lower wall 202. As a result, the housing 200 has an internal space S200 surrounded by the upper wall 201, the lower wall 202, the side wall 203, the side wall 204, the side wall 205, and the side wall 206. A first electric circuit is disposed in the internal space S200 (not shown in detail).

[0027] The side wall 203 has an intake port 281 and an exhaust port 291. The intake port 281 corresponds to the first intake port, and the exhaust port 291 corresponds to the first exhaust port. The intake port 281 and the exhaust port 291 penetrate the side wall 203 in the thickness direction. The intake port 281 and the exhaust port 291 connect the internal space S200 of the housing 200 to the external space of the housing 200. The outer surface of the side wall 203 corresponds to the flow path forming surface of the main unit 20.

[0028] The intake port 281 and the exhaust port 291 are arranged side by side in the width direction of the side wall 203. The intake port 281 and the exhaust port 291 are arranged in this order from one end to the other end in the width direction of the side wall 203. The one end in the width direction of the side wall 203 is the end where the side wall 203 is connected to the side wall 205, and the other end is the end where the side wall 203 is connected to the side wall 206.

[0029] A cylindrical body 290 is installed on the side wall 203. The cylindrical body 290 is shaped to protrude from the outer surface of the side wall 203. A central opening of the cylindrical body 290 is connected to an exhaust port 291 formed in the side wall 203, and this portion also functions as the exhaust port 291.

[0030] An air filter 22 is disposed in the air intake 281. A filter cover 21 is attached to the outer surface side of the air filter 22. The air filter 22 is fixed to the air intake 281 by being sandwiched between the filter cover 21 and the side wall 203.

[0031] A recess 231 is formed in the side wall 203. The recess 231 is formed in the vicinity of one end of the side wall 203. That is, the recess 231 is disposed apart from the cylinder 290 forming the exhaust port 291 in the width direction of the side wall 203.

[0032] A power supply port 26 is disposed on the side wall 204. The power supply port 26 is connected to a first electric circuit in the internal space S200. By connecting the power supply port 26 to an external power adapter, power is supplied to the first electric circuit.

[0033] An operation button 29 is disposed on the top wall 201. The operation button 29 is connected to a first electric circuit in the internal space S200. By operating the operation button 29, the operation of the first electric circuit, such as starting and stopping, is controlled.

[0034] (Specific Configuration of Recess 230 of Main Unit 20) A recess 230 is formed in the bottom wall 202. The recess 230 is recessed upward (toward the inside of the housing 200) from the surface of the bottom wall 202 (corresponding to the "second surface" of the present invention). The recess 230 is formed at a position closer to one end of the bottom wall 202 than to the other end. The one end of the bottom wall 202 is the end where the bottom wall 202 is connected to the side wall 203, and the other end is the end where the bottom wall 202 is connected to the side wall 204.

[0035] Fig. 7(A) is a bottom view of an enlarged portion including a recess formed on the bottom surface of the main unit, and Fig. 7(B) is a side cross-sectional view of an enlarged portion including a recess formed on the bottom surface of the main unit. Fig. 7(B) shows a cross section taken along the line Bm-Bm in Fig. 7(A).

[0036] The recess 230 includes a bottom wall 23, a side wall 233, a side wall 234, a side wall 235, and a side wall 236. The bottom wall 23 is disposed above the lower wall 202 of the housing 200.

[0037] The side wall 233, the side wall 234, the side wall 235, and the side wall 236 connect the bottom wall 23 and the lower wall 202. The side wall 233 connects the bottom wall 23 and the part of the lower wall 202 on the side wall 203 side, and the side wall 234 connects the bottom wall 23 and the part of the lower wall 202 on the side wall 204 side. The side wall 235 connects the bottom wall 23 and the part of the lower wall 202 on the side wall 205 side, and the side wall 236 connects the bottom wall 23 and the part of the lower wall 202 on the side wall 206 side. The part consisting of the side wall 233, the side wall 234, the side wall 235, and the side wall 236 corresponds to the "first peripheral part" of the present invention.

[0038] The planar area of ​​bottom wall 23 is smaller than the opening area of ​​lower wall 202 of recess 230. Therefore, side wall 233, side wall 234, side wall 235, and side wall 236 have an inclined shape when viewed from the side. The angle formed by side wall 233, side wall 234, side wall 235, and side wall 236 and bottom wall 23 (the angle formed on the inside of recess 230) is greater than 90 degrees.

[0039] A plurality of connection terminals 24 are arranged on the surface (the surface on the recess 230 side) of the bottom wall 23. The plurality of connection terminals 24 are arranged parallel to one another in the short dimension direction of the lower wall 202 of the housing 200. The portion of the bottom wall 23 where the plurality of connection terminals 24 are arranged corresponds to the "first electrical connection portion" of the present invention, and the portion around the portion of the bottom wall 23 where the plurality of connection terminals 24 are arranged corresponds to the "proximal portion around the first connection terminal" of the present invention.

[0040] A circuit board 240 constituting a first electric circuit is disposed on the inner space S200 side of the bottom wall 23. The circuit board 240 is connected to the multiple connection terminals 24 by conductors that penetrate the bottom wall 23 in the thickness direction.

[0041] A groove 25 is formed in the bottom wall 23. The groove 25 penetrates the bottom wall 23 and extends parallel to the short dimension direction of the lower wall 202.

[0042] (Base Unit 30) Fig. 8 is an external perspective view of the base unit according to the embodiment of the present invention. Fig. 9(A) is a top view of the base unit, and Fig. 9(B), Fig. 10(A) and Fig. 10(B) are side views of the base unit. Fig. 9(B) is a view seen from the long side walls 315, 325 side, Fig. 10(A) is a view seen from the short side walls 314, 324 side, and Fig. 10(B) is a view seen from the short side walls 313, 323 side.

[0043] As shown in FIGS. 8, 9(A), 9(B), 10(A) and 10(B), the base unit 30 includes a plurality of housings 31 and 32.

[0044] (General shape of base unit 30) The outer shape of the housing 31 and the housing 32 is a rectangular parallelepiped having a long dimension (x30 axis direction) and a short dimension (y30 axis direction) and a predetermined height (length in the z30 axis direction). The long dimension of the housing 31 is longer than the long dimension of the housing 32.

[0045] The housing 32 is disposed on the upper wall 311 side of the housing 31, and the housings 31 and 32 are connected to each other. The internal space S31 of the housing 31 and the internal space S32 of the housing 32 communicate with each other through an opening 3110 of the housing 31 and an opening 3220 of the housing 32. The housing 32 is rotatable or detachable with respect to the housing 31.

[0046] Side wall 313 of housing 31 and side wall 323 of housing 32 are flush with each other, side wall 315 of housing 31 and side wall 325 of housing 32 are flush with each other, and side wall 316 of housing 31 and side wall 326 of housing 32 are flush with each other.

[0047] As a result, base unit 30 has a step midway in the longitudinal direction, and has a high back portion where housing 31 and housing 32 overlap, and a low back portion where only housing 31 is present.

[0048] (Case 31) Housing 31 includes top wall 311, bottom wall 312, side wall 313, side wall 314, side wall 315, and side wall 316. Top wall 311 and bottom wall 312 face each other. Side wall 313 and side wall 314 are side walls parallel to the short dimension direction and face each other. Side wall 315 and side wall 316 are side walls parallel to the long dimension direction and face each other.

[0049] Side wall 313, side wall 314, side wall 315, and side wall 316 are connected to the periphery of top wall 311 and bottom wall 312. This causes housing 31 to have internal space S31 surrounded by top wall 311, bottom wall 312, side wall 313, side wall 314, side wall 315, and side wall 316. At least a part of a second electric circuit is disposed in internal space S31 (not shown in detail).

[0050] An opening 3110 is formed in the top wall 311. The opening 3110 is a hole penetrating the top wall 311 in the thickness direction. The opening 3110 has a predetermined length in the long dimension direction and is open over substantially the entire top wall 311 in the short dimension direction. The opening 3110 is formed so as to leave a predetermined area on the side of the top wall 311 connected to the side wall 314. In other words, the opening 3110 is formed in an area a predetermined width inward from an area in which the housing 32 is disposed.

[0051] Frame bodies 344, 345, and 346 are formed around the periphery of top wall 311. Frame bodies 344, 345, and 346 protrude upward from the upper surface of top wall 311. Frame body 344 runs along the connection between top wall 311 and side wall 314, frame body 345 runs along the connection between top wall 311 and side wall 315, and frame body 346 runs along the connection between top wall 311 and side wall 316.

[0052] (Specific Configuration of Protrusion 40 of Base Unit 30) A protrusion 40 is formed on the top wall 311. The protrusion 40 is shaped to protrude upward (toward the outside of the housing 31) from the surface of the top wall 311 (corresponding to the "second surface" of the present invention). The protrusion 40 is formed at a position closer to one end of the top wall 311 than to the other end. The one end of the top wall 311 is the end where the top wall 311 connects to the step, and the other end is the end where the top wall 311 connects to the side wall 314.

[0053] Fig. 11(A) is a top view of an enlarged portion including a protrusion formed on the upper surface of the base unit, and Fig. 11(B) is a side cross-sectional view of an enlarged portion including a protrusion formed on the upper surface of the base unit. Fig. 11(B) shows a cross section taken along line Bb-Bb of Fig. 11(A).

[0054] The protrusion 40 includes a top wall 401, a side wall 403, a side wall 404, a side wall 405, and a side wall 406. The top wall 401 is disposed above the upper wall 311 of the housing 31.

[0055] The side wall 403, the side wall 404, the side wall 405, and the side wall 406 connect the top wall 401 and the upper wall 311. The side wall 403 connects the top wall 401 and the part of the upper wall 311 on the cross section side, and the side wall 404 connects the top wall 401 and the part of the upper wall 311 on the side wall 314 side. The side wall 405 connects the top wall 401 and the part of the upper wall 311 on the side wall 315 side, and the side wall 406 connects the top wall 401 and the part of the upper wall 311 on the side wall 316 side. The part consisting of the side wall 403, the side wall 404, the side wall 405, and the side wall 406 corresponds to the "second peripheral part" of the present invention.

[0056] The planar area of ​​the top wall 401 is smaller than the planar area of ​​the portion connected to the upper wall 311 of the protrusion 40. Therefore, the side walls 403, 404, 405, and 406 have an inclined shape when viewed from the side. The angles formed by the side walls 403, 404, 405, and 406 and the top wall 401 (the angles formed on the inside of the protrusion 40) are greater than 90 degrees. The angles formed by the top wall 401 of the protrusion 40 and each side wall are approximately the same as the angles formed by the bottom wall 23 of the recess 230 and each side wall.

[0057] A plurality of connection terminals 50 are arranged on the surface of the top wall 401 (the exposed surface of the protrusion 40). The plurality of connection terminals 50 protrude outward from the surface of the top wall 401 at a predetermined height. The plurality of connection terminals 50 are arranged parallel to one another in the short dimension direction of the upper wall 311 of the housing 31. The portion of the top wall 401 where the plurality of connection terminals 50 are arranged corresponds to the "second electrical connection portion" of the present invention, and the portion around the portion of the top wall 401 where the plurality of connection terminals 50 are arranged corresponds to the "proximal portion around the second connection terminal" of the present invention.

[0058] A circuit board 500 constituting a second electric circuit is disposed in the internal space S31 of the top wall 401. An electronic component ECb is mounted on the circuit board 500. The circuit board 240 is connected to a plurality of connection terminals 24 by conductors that penetrate the bottom wall 23 in the thickness direction.

[0059] A groove 600 is formed in the top wall 401. A hook member 60 is inserted into the groove 600. The hook member 60 is used when attaching the main unit 20 to the base unit 30 or detaching it from the base unit 30.

[0060] (Overview of the Operation of CPAP Device 10) (Main unit 20 used alone) The main unit 20 includes a blower (not shown) electrically connected to the first electric circuit. The blower is disposed in the internal space S200 of the housing 200. When the blower is driven, the main unit 20 takes in air from the intake port 281 and exhausts it from the exhaust port 291. By providing the air filter 22 in the intake port 281, the main unit 20 supplies gas (air) of a desired cleanliness to the user from the exhaust port 291.

[0061] (Main unit 20 is attached to base unit 30 for use) When the main unit 20 is attached to the base unit 30, the main unit 20 is placed on the upper surface of the low back part of the base unit 30 (upper surface of the upper wall 311). The lower wall 202 of the housing 200 of the main unit 20 faces the upper wall 311 of the housing 31 of the base unit 30. At this time, the hook member 60 of the base unit 30 engages with the portion where the groove 25 is formed on the bottom wall 23 of the recess 230 in the main unit 20, thereby fixing the main unit 20 to the base unit 30.

[0062] Furthermore, the outer surface of side wall 203 of housing 200 and the outer surface of side wall 324 of housing 32 are close to or in contact with each other, and are in close contact with each other. Side wall 203 and side wall 324 may be in close contact with each other via an elastic body.

[0063] At this time, the cylinder 290 constituting the exhaust port 291 of the main unit 20 is inserted into the intake port 39 of the base unit 30. Also, the intake port 281 of the main unit 20 and the exhaust port 38 of the base unit 30 overlap when viewed along the x-axis (x10-axis). As a result, the flow path forming surface on the main unit 20 side and the flow path forming surface on the base unit 30 side face each other closely. The intake port 281 of the main unit 20 and the exhaust port 38 of the base unit 30 pass through each other without causing gas leakage. The exhaust port 291 of the main unit 20 and the intake port 39 of the base unit 30 pass through each other without causing gas leakage.

[0064] In this state, when the blower is driven, the base unit 30 takes in gas from the intake port 36, and exhausts the gas from the exhaust port 38 through the internal space S31 and the internal space S32. The main unit 20 takes in the gas exhausted from the exhaust port 38 from the intake port 281, and exhausts the gas from the exhaust port 291. The base unit 30 takes in the gas exhausted from the exhaust port 291 from the intake port 39, and exhausts the gas from the opening 350 of the air blower duct 35. As a result, the CPAP device 10 with the main unit 20 attached to the base unit 30 supplies gas (air) of a desired cleanliness to the user from the opening 350 of the air blower duct 35.

[0065] Furthermore, a water tank 390 is housed in the high back portion of the base unit 30. The base unit 30 also includes a heater for heating the water in the water tank.

[0066] The base unit 30 has an intake port for taking in water vapor heated by a heater in a flow path that connects from the intake port 39 to the opening 350 of the air blower duct 35. In the CPAP device 10 in which the main unit 20 is attached to the base unit 30, the heater heats and vaporizes the water in the water storage tank 390, and the gas (air) with the desired humidity is supplied to the user from the opening 350 of the air blower duct 35.

[0067] (Specific configuration of electrical connection part) FIG. 12(A) is an enlarged cross-sectional side view of an electrical connection portion between a main unit and a base unit, and FIG. 12(B) is a diagram showing a concept of preventing water intrusion.

[0068] 12, the convex portion 40 of the base unit 30 is fitted into the concave portion 230 of the main unit 20. Then, the multiple connection terminals 50 of the base unit 30 abut on the multiple connection terminals 24 of the main unit 20 and are electrically connected.

[0069] At this time, the multiple connection terminals 50 are pushed in by the main unit 20 (multiple connection terminals 24). As a result, the multiple connection terminals 50 generate a biasing force in a direction (electrical connection direction) to connect to the multiple connection terminals 24. Therefore, the connection resistance between the multiple connection terminals 50 and the multiple connection terminals 24 can be reduced, and the reliability of the electrical connection is improved.

[0070] In this state, the top wall 401 of the protrusion 40 and the bottom wall 23 of the recess 230 face each other. Furthermore, the side wall 403 of the protrusion 40 faces the side wall 233 of the recess 230. The side wall 404 of the protrusion 40 faces the side wall 234 of the recess 230. The side wall 405 of the protrusion 40 faces the side wall 235 of the recess 230. The side wall 406 of the protrusion 40 faces the side wall 236 of the recess 230.

[0071] The distance between the opposing surfaces of the top wall 401 and the bottom wall 23 (the distance between the first electrical connection portion and the second electrical connection portion) is Gec (hereinafter referred to as the spatial distance Gec). More specifically, the spatial distance Gec is the distance between the surface of the top wall 401 facing the bottom wall 23, which is the surface of the adjacent portion around the multiple connection terminals 24, and the surface of the bottom wall 23 facing the top wall 401, which is the surface of the adjacent portion around the multiple connection terminals 50. In other words, the spatial distance Gec is the spatial distance between the adjacent portions of the connection terminals. If the spatial distance Gec varies in the opposing region of the top wall 401 and the bottom wall 23, the minimum value is the spatial distance Gec. The spatial distance Gec corresponds to the "second distance" of the present invention.

[0072] The distance between the opposing surfaces of side wall 405 and side wall 235 (the distance between the opposing first peripheral portion and the opposing second peripheral portion) is Gnr (hereinafter referred to as spatial distance Gnr of the peripheral portion). More specifically, spatial distance Gnr of the peripheral portion is the distance between the surface of side wall 405 facing side wall 235 and the surface of side wall 235 facing side wall 405. If spatial distance Gnr of the peripheral portion varies in the opposing region of side wall 405 and side wall 235, the maximum value is spatial distance Gnr of the peripheral portion. Spatial distance Gnr corresponds to the "first distance" of the present invention.

[0073] Similarly, the side wall 403 and the side wall 233 face each other at the spatial distance Gnr of the peripheral portion, the side wall 404 and the side wall 234 face each other at the spatial distance Gnr of the peripheral portion, and the side wall 406 and the side wall 236 face each other at the spatial distance Gnr of the peripheral portion. In this case, when the spatial distance Gnr between the side wall 403 and the side wall 233, the spatial distance Gnr between the side wall 404 and the side wall 234, the spatial distance Gnr between the side wall 405 and the side wall 235, and the spatial distance Gnr between the side wall 406 and the side wall 236 are different, the maximum value becomes the spatial distance Gnr of the peripheral portion.

[0074] As shown in Fig. 12, the spatial distance Gnr of the surrounding area is shorter than the spatial distance Gec of the adjacent area of ​​the connection terminal. For example, the spatial distance Gnr of the surrounding area is preferably 0.7 mm or less, and more preferably about 0.15 mm. On the other hand, the spatial distance Gec of the adjacent area of ​​the connection terminal is 0.8 mm or more.

[0075] In such a configuration, when the main unit 20 is attached to the base unit 30 with water present between the top wall 311 of the base unit 30 and the bottom wall 202 of the main unit 20 (outside the portion where the concave portion 230 and the convex portion 40 face each other), as shown in Figure 12 (B), the water reaches the portion where the side wall 405 and the side wall 235 face each other (the narrow area ZNnr in the peripheral portion), but does not reach the portion near the connection terminal where the top wall 401 and the bottom wall 23 face each other.

[0076] This phenomenon occurs due to the capillary action of water, which occurs when the spatial distance Gnr in the surrounding area (narrow area ZNnr) is smaller than the spatial distance Gec in the adjacent area of ​​the connection terminal. In particular, as described above, by making the spatial distance Gnr in the surrounding area approximately 0.15 mm or less, the capillary action can be more reliably generated.

[0077] Therefore, the CPAP device 10 can prevent water from entering the vicinity of the connection terminals even if water is present on the surface of the upper wall 311 of the base unit 30. This allows the CPAP device 10 to suppress undesired short-circuiting of the multiple connection terminals 24 and the multiple connection terminals 50. In particular, as described above, by setting the spatial distance Gnr of the surrounding area to approximately 0.15 mm or less, retention of water in the surrounding area due to capillary action and infiltration of water into the vicinity of the connection terminals can be more reliably suppressed.

[0078] The spatial distance Gnr of the surrounding area is not limited to the above-mentioned specific example. The spatial distance Gnr of the surrounding area (narrow area ZNnr) is shorter than the spatial distance Gec of the adjacent area of ​​the connection terminal, and may be set so that capillary action occurs based on the adhesion between the liquid such as water handled by the CPAP device 10 and each side wall of the convex part 40 and the concave part 230.

[0079] In the above-mentioned configuration, the narrow area ZNnr is provided on the entire circumference surrounding the vicinity of the connection terminal in plan view. However, even if the narrow area ZNnr is partially absent, the effect of suppressing water infiltration into the vicinity of the connection terminal can be obtained more than in the case where the narrow area ZNnr is not present at all. In addition, in the area where the narrow area ZNnr is not present, an elastic dam material or the like may be arranged so as to be sandwiched between the upper wall 311 and the lower wall 202.

[0080] In the CPAP device 10, the height of the frame bodies 344, 345, 345 of the base unit 30 is made lower than the height of the protruding portion 40. In other words, the height of the protruding portion 40 is greater than the height of the frame bodies 344, 345, 345 of the base unit 30. This makes it possible for the CPAP device 10 to suppress the intrusion of water into the vicinity of the connection terminal even if there is water on the upper wall 311 up to the height of the frame bodies 344, 345, 345, for example.

[0081] (Variation 1) FIG. 13 is an enlarged side cross-sectional view of an electrical connection portion between a main unit and a base unit in the first modification.

[0082] The CPAP device 10A of the first modification is different from the above-mentioned CPAP device 10 in the shape of the convex portion 40A of the base unit 30A. The other configuration of the CPAP device 10A is the same as that of the CPAP device 10, and the description of the similar parts will be omitted.

[0083] The protrusion 40A includes a frame 49 on the periphery of the top wall 401 that protrudes upward from the surface of the top wall 401.

[0084] With this configuration, the CPAP device 10A can further prevent water from entering the vicinity of the connection terminal.

[0085] (Variation 2) FIG. 14 is an enlarged cross-sectional side view of an electrical connection portion between a main unit and a base unit in the second modification.

[0086] The CPAP device 10B of the second modification is different from the above-mentioned CPAP device 10 in that a recess 40B is provided in the base unit 30B. The other configurations of the CPAP device 10B are the same as those of the CPAP device 10, and the description of the similar parts will be omitted.

[0087] The base unit 30B includes a recess 40B. The recess 40B is obtained by forming the above-mentioned protrusion 40 on the internal space S31 side of the housing 31. In other words, the recess 40B has a shape that protrudes toward the internal space S31 side of the housing 31.

[0088] In the CPAP device 10B, the narrow area ZNnr in the peripheral portion is formed by the opposing portion between the lower wall 202 of the main unit 20 and the upper wall 311 of the base unit 30B.

[0089] With this configuration, the CPAP device 10B can achieve the same effects as the CPAP device 10.

[0090] <1> a main unit including a first electric circuit including a blower and a first connection terminal connected to the first electric circuit; a base unit connectable to the main unit and including an air duct, a second electric circuit, and a second connection terminal connected to the second electric circuit; Equipped with the main unit has a first electrical connection portion including an exposed portion of the first connection terminal, and a first surrounding portion surrounding the first electrical connection portion, the base unit has a second electrical connection portion including an exposed portion of the second connection terminal, and a second peripheral portion surrounding the second electrical connection portion; A CPAP device, wherein a first distance between the first peripheral portion and the second peripheral portion is shorter than a second distance between a nearby portion around the first connection terminal of the first electrical connection portion and a nearby portion around the second connection terminal of the second electrical connection portion.

[0091] <2> around the entire circumference of a portion where a portion of the first electrical connection portion adjacent to the first connection terminal and a portion of the second electrical connection portion adjacent to the second connection terminal face each other, The first distance is less than the second distance. <1> CPAP device.

[0092] <3> the main unit has a first surface, and the first electrical connection portion is disposed on a bottom surface of a recess recessed from the first surface; the base unit has a second surface, and the second electrical connection portion is disposed on a top surface of a protrusion protruding from the second surface; The first peripheral portion is a side surface of the recessed portion, and the second peripheral portion is a side surface of the protruding portion. <1> or <2> CPAP device.

[0093] <4> The second surface of the base unit includes a first frame body that is higher than the protrusion and is disposed outside the second peripheral portion. <3> CPAP device.

[0094] <5> the second electrical connection portion includes a second frame surrounding the second connection terminal when viewed in a direction perpendicular to the second surface. <3> or <4> CPAP device.

[0095] <6> the first distance is 0.15 mm; <1> ~ <5> Any CPAP device.

[0096] <7> The base unit includes a storage tank for storing water. <1> ~ <6> Any CPAP device. [Explanation of symbols]

[0097] 10, 10A, 10B: CPAP device 20: Main unit 21: Filter cover 22: Air filter 23: Bottom wall 24: Connection terminal 25: Groove 26: Power port 29: Operation button 30, 30A, 30B: Base unit 31, 32: Housing 35: Air pipe 36: Air intake 38: Exhaust port 39: Air intake 390: Water tank 40, 40A: Convex 40B: Recess 49:Frame body 50: Connection terminal 60: Hook member 200: Cabinet 201:Top wall 202: Bottom wall 203, 204, 205, 206: Side wall 230: Recess 231: Recess 233, 234, 235, 236: Side wall 240: Circuit board 281: Air intake 290: Cylinder 291: Exhaust port 311:Top wall 312: Bottom wall 313, 314, 315, 316: Side wall 323, 324, 325, 326: Side wall 344, 345, 346: Frame 350:Aperture 401: Top wall 403, 404, 405, 406: Side wall 500: Circuit board 600: Groove 3110, 3220: Aperture ECb:Electronic components Gec: Spatial distance of adjacent parts Gnr: Clearance distance around the perimeter S200, S31, S32: Internal space ZNnr: Narrow area

Claims

1. a main unit including a first electric circuit including a blower and a first connection terminal connected to the first electric circuit; a base unit connectable to the main unit and including an air duct, a second electric circuit, and a second connection terminal connected to the second electric circuit; Equipped with the main unit has a first electrical connection portion including an exposed portion of the first connection terminal, and a first peripheral portion surrounding the first electrical connection portion, the base unit has a second electrical connection portion including an exposed portion of the second connection terminal, and a second peripheral portion surrounding the second electrical connection portion; a first distance between the first peripheral portion and the second peripheral portion is shorter than a second distance between a nearby portion around the first connection terminal of the first electrical connection portion and a nearby portion around the second connection terminal of the second electrical connection portion, the main unit has a first surface, and the first electrical connection portion is disposed on a bottom surface of a recess recessed from the first surface; the base unit has a second surface, and the second electrical connection portion is disposed on a top surface of a protrusion protruding from the second surface; the first peripheral portion is a side surface of the recessed portion, and the second peripheral portion is a side surface of the protruding portion, the second electrical connection portion includes a second frame surrounding the second connection terminal when viewed in a direction perpendicular to the second surface. CPAP device.

2. around the entire circumference of a portion where a portion of the first electrical connection portion adjacent to the first connection terminal and a portion of the second electrical connection portion adjacent to the second connection terminal face each other, The first distance is less than the second distance.

2. The CPAP device of claim 1.

3. The second surface of the base unit includes a first frame body that is higher than the protrusion and is disposed outside the second peripheral portion.

2. The CPAP device of claim 1.

4. The first distance is 0.15 mm.

3. A CPAP device according to claim 1 or 2.

5. The base unit includes a storage tank for storing water.

3. A CPAP device according to claim 1 or 2.

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