Cable wiring structure for a rotating structure, and CPAP device

Abstract

This structure for wiring a cable to a rotating structure comprises: a non-rotating structure; the rotating structure, disposed rotatably with respect to the non-rotating structure; and a cable (CBL) having one end connected to the non-rotating structure and the other end connected to the rotating structure. The non-rotating structure includes a cavity portion (3299) that permits deformation of a routing shape of the cable (CBL) when the rotating structure rotates. The rotating structure includes: a main body (351) around which the cable (CBL) is wound; a cover (352) disposed spaced apart from the main body (351) to the side of the main body (351); and, between the main body (351) and the cover (352), a cavity portion (359) that permits deformation of the routing shape of the cable (CBL) when the rotating structure rotates.

Description

Technical Field

[0001] The present invention relates to a structure including a non-rotating structure, a rotating structure, and a cable having one end connected to the non-rotating structure and the other end connected to the rotating structure. Applicable

Background Art

[0002] Patent Document 1 describes a driving force transmission device for a rotating body. The device of Patent Document 1 includes a rotating cylinder, a rotary terminal, and a cable. The device of Patent Document 1 winds the cable around the outer peripheral surface of the rotating cylinder in accordance with the turning of the rotating cylinder. The device of Patent Document 1 introduces the cable into the rotating cylinder through the rotary terminal.

[0003] Patent Document 2 describes a connector device. The device of Patent Document 2 includes a cylindrical housing and a flat cable. The housing incorporates an annular cylindrical shaft portion having a gap in a part of the circumferential direction. The device of Patent Document 2 feeds and winds up the flat cable through the gap of the cylindrical shaft portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the conventional configurations as shown in Patent Document 1 and Patent Document 2, there are portions where a large load is applied to the cable when the cable is fed or wound up. For this reason, there has been a possibility that the cable is disconnected.

[0006] Therefore, the objective of the present invention is to suppress disconnection of a cable in which one end is connected to a non-rotating structure and the other end is connected to a rotating structure. [Means for solving the problem]

[0007] The cable wiring structure to a rotating structure according to an embodiment of this invention comprises a non-rotating structure, a rotating structure rotatably positioned relative to the non-rotating structure, and a cable having one end connected to the non-rotating structure and the other end connected to the rotating structure.

[0008] The non-rotating structure has a first cavity that allows deformation of the cable routing shape when the rotating structure rotates. The rotating structure has a main body having sides around which the cable is wound, a cover positioned spaced apart from the sides of the main body, and a second cavity between the main body and the cover that allows deformation of the cable routing shape when the rotating structure rotates.

[0009] In this configuration, when the rotating structure rotates relative to the non-rotating structure, even if the distance between one end of the cable and the other end of the cable changes, the deflection of the cable due to the change in distance is contained by at least one of the first and second cavities. This prevents unwanted stress from being applied to the cable. [Effects of the Invention]

[0010] According to this invention, it is possible to suppress disconnection of a cable in which one end is connected to a non-rotating structure and the other end is connected to a rotating structure. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is an external perspective view of a CPAP device according to an embodiment of the present invention. [Figure 2] Figure 2 is an external perspective view of a base unit according to an embodiment of the present invention. [Figure 3] Figures 3(A) and 3(B) are plan views showing the arrangement of ventilation pipes in the base unit. [Figure 4] Figure 4(A) is a perspective view from the front side of the ventilation pipe, and Figure 4(B) is an exploded perspective view of the ventilation pipe. [Figure 5] Figure 5(A) is a perspective view from the back side of the ventilation pipe, and Figure 5(B) is a partial side cross-sectional view of the ventilation pipe. [Figure 6] Figure 6(A) is an external perspective view of the main body of the ventilation pipe, and Figure 6(B) is a plan view of the main body of the ventilation pipe. [Figure 7] Figure 7(A) is an external perspective view of the front side of the cover of the ventilation pipe, and Figure 7(B) is an external perspective view of the back side of the cover of the ventilation pipe. [Figure 8] Figure 8(A) is a plan view showing the arrangement structure of the ventilation pipe on the lid, and Figure 8(B) is a view showing the state where the cover in Figure 8(A) is removed. [Figure 9] Figures 9(A) and 9(B) are plan views each showing one aspect during the rotation of the ventilation pipe. [Figure 10] Figure 10 is a plan view showing one aspect during the rotation of the ventilation pipe.

Mode for Carrying Out the Invention

[0012] The cable wiring structure of the rotating structure according to an embodiment of the present invention fart will be described with reference to the drawings. In this embodiment, the CPAP device fart will be described as an example of the application target of the cable wiring structure of the rotating structure. However, the application target of the cable wiring structure of the rotating structure fart is not limited to the CPAP device.

[0013] (Outline of CPAP Device 10) Figure 1 is an external perspective view of a CPAP device according to an embodiment of the present invention. Figure 1 shows a state where the main unit is attached to the base unit.

[0014] As shown in Figure 1, the CPAP device 10 includes a main unit 20 and a base unit 30.

[0015] The outer shape of the main unit 20 is a rectangular parallelepiped, and its height is shorter than the length in the long direction and the length in the short direction. Note that the rectangular parallelepiped in this embodiment is not limited to a perfect rectangular parallelepiped, and includes those with various chamfers on the vertices and edges.

[0016] The base unit 30 is a rectangle having a long direction and a short direction in a plan view. The base unit 30 has a high back and a low back, and the high back is higher than the low back. That is, the outer shape of the base unit 30 is a shape in which the high back of the rectangular parallelepiped and the low back of the rectangular parallelepiped are connected in the long direction of the base unit 30.

[0017] The main unit 20 can be mounted on the upper surface of the low back of the base unit 30. In a state where the main unit 20 is mounted on the base unit 30, the outer shape of the CPAP device 10 is a rectangular parallelepiped.

[0018] In a state where the main unit 20 is mounted on the base unit 30 (mounted state), the gas flow path of the main unit 20 and the gas flow path of the base unit 30 communicate with each other. Also, the first electric circuit of the main unit 20 and the second electric circuit of the base unit 30 are electrically connected. Thereby, the main unit 20 and the base unit 30 cooperate to realize the functions of the CPAP device 10. Note that in a state where the main unit 20 is removed from the base unit 30, the main unit 20 operates independently to realize the functions of the CPAP device 10.

[0019] Although not shown in the figure, the main unit 20 incorporates a blower. By driving the blower, the CPAP device 10 generates an air flow to be supplied to the user.

[0020] (Base unit 30) FIG. 2 is an external perspective view of a base unit according to an embodiment of the present invention. The base unit 30 corresponds to the main body of the CPAP device 10 in the present invention.

[0021] As shown in Figure 2, the base unit 30 comprises a box body 31 and a lid 32. Schematically, the box body 31 has an opening on its top surface. The lid 32 is rotatably connected to the box body 31.

[0022] (Box 31) The box body 31 comprises an upper wall 311, a lower wall 312, side walls 313, 314, 315, 316, and 317. The box body 31 has a space S31A formed by the upper wall 311, the lower wall 312, the side walls 314, 315, 316, and 317. At the same time, the box body 31 has a space S31B formed by the upper wall 311, the lower wall 312, the side walls 313, 315, 316, and 317.

[0023] Space S31B, viewed in plan on the upper side where the upper wall 311 is located, has an opening between the side wall 317 and the side wall 313. The portion forming this space S31B accommodates a humidification chamber (not shown).

[0024] The side wall 314 has an intake port 36. The intake port 36 penetrates the side wall 314 in the thickness direction. The side wall 317 has an exhaust port 38 and an intake port 39 above the portion that connects to the upper wall 311. The exhaust port 38 penetrates the interior of the side wall 317 and connects to the space S31A. The intake port 39 penetrates the side wall 317 in the thickness direction.

[0025] (Lid 32) The lid 32 comprises an upper wall 321, side walls 323, side walls 325, and side walls 326. The lid 32 has a space S32 formed by the upper wall 321, side walls 323, side walls 325, and side walls 326. The lid 32 corresponds to the non-rotating structure of the present invention.

[0026] A ventilation pipe 35 is located on the upper wall 321. 2 It has a shape that protrudes outward from 1. The vent pipe 35 has a vent hole 350. The vent pipe 35 is arranged to be rotatable by 180° when viewed from above (see Figures 9(A), 9(B), and 10). The vent pipe 35 corresponds to the rotating structure of the present invention. The specific configuration of the vent pipe 35 will be described later.

[0027] With this structure, the CPAP device 10 generates airflow using the blower in the main unit 20, draws in gas through the intake port 36 of the base unit 30, and discharges the gas through the vent pipe 35. At this time, the CPAP device 10 drives and controls the blower and heats the water in the storage tank with a heater to deliver an airflow with the desired flow rate, discharge pressure, and humidity.

[0028] The vent pipe 35 is physically and electrically connected to the inhalation mask worn by the user via piping (not shown in the diagram). This allows the airflow delivered from the CPAP device 10 to be provided to the user.

[0029] (Cable wiring structure for ventilation pipes (Cable wiring structure for rotating structures)) Figures 3(A) and 3(B) show the ventilation pipes in the base unit. fart This is a plan view showing the arrangement of the components. Figure 3(A) shows the unit with the top cover removed, and Figure 3(B) shows the unit with the top cover attached.

[0030] (Base unit cover (non-rotating structure)) As shown in Figures 3(A) and 3(B), the lid 32 of the base unit 30 comprises a main body B321 and a main body cover 3211. The lid 32 corresponds to the non-rotating structure of the present invention.

[0031] The main body B321 has a recess that opens on its upper side. As shown in Figures 3(A) and 3(B), the main body B321 has a circular opening 3210 when viewed from above. The main body cover 3211 is plate-shaped and has an opening that is approximately the same shape as the outer shape of the base 3522 of the ventilation pipe 35 (details will be described later). In a plan view, the opening of the main body cover 3211 overlaps with (communicates with) the opening 3210 of the main body B321 and is smaller than the opening 3210. In this state, the main body cover 3211 covers the opening on the upper side of the main body B321. As a result, the lid 32 has a space of a predetermined height outside the opening 3210. A hole that communicates with the ventilation hole 350 of the ventilation pipe 35 may be made in the center of the recess of the opening 3210.

[0032] The main body B321 has an annular peripheral wall 3290 surrounding the opening 3210. The peripheral wall 3290 is interrupted midway in the circumferential direction. The interrupted portion of the peripheral wall 3290 is the guide opening G329.

[0033] A guide wall 3291 is formed at one end of the cut portion of the peripheral wall 3290. The guide wall 3291 is arc-shaped when viewed from above. For example, the guide wall 3291 is arc-shaped for about 1 / 4 of the circumference and bulges towards the guide opening G329.

[0034] One end of the guide wall 3291 connects to one end of the cut portion of the peripheral wall 3290. This connection is arc-shaped. In other words, one end of the guide wall 3291 does not have an angular shape. Ku Connects to the surrounding wall 3290.

[0035] The other end of the guide wall 3291 is connected to a wall that extends in the opposite direction to the peripheral wall 3290, with respect to the guide wall 3291. The guide wall 3291 corresponds to the first guide wall of the present invention.

[0036] A guide wall 3292 is formed at the other end of the cut portion of the peripheral wall 3290. The guide wall 3292 is approximately arc-shaped when viewed from above.

[0037] One end of the guide wall 3292 connects to the other end of the cut portion of the peripheral wall 3290. This connection is arc-shaped. In other words, one end of the guide wall 3292 does not have an angular shape. Ku It connects to the peripheral wall 3290. The other end of the guide wall 3292 connects to the outer surface of the peripheral wall 3290. The guide wall 3292 corresponds to the second guide wall of the present invention.

[0038] Guide walls 3291 and 3292 have the structure described above, and by connecting them to the peripheral wall 3290 as described above, a cavity 3299 with a large area is formed outward from the guide opening G329 between guide walls 3291 and 3292 when viewed from above. The cavity 3299 corresponds to the first cavity of the present invention.

[0039] Functionally speaking, the size of the cavity 3299 is large enough to accommodate the slack of the cable CBL described later, or in other words, large enough to allow deformation of the cable CBL's routing shape outside the guide opening G329 (see Figure 9(B), etc.).

[0040] The main body B321 further includes a plurality of protruding walls 3297 and cable connection parts 3298. The plurality of protruding walls 3297 and cable connection parts 3298 are located on the outer side of the main body B321, in a direction along the peripheral wall 3290, and closer to the guide wall 3292. In this circumferential direction, the plurality of protruding walls 3297 and cable connection parts 3298 are arranged in that order from the guide wall 3292 side.

[0041] (Ventilation pipe (rotating structure)) Figure 4(A) is a perspective view of the vent pipe from the front, and Figure 4(B) is an exploded perspective view of the vent pipe. Figure 5(A) is a perspective view of the vent pipe from the back, and Figure 5(B) is a partial side cross-sectional view of the vent pipe.

[0042] (General structure of the ventilation pipe) As shown in Figures 4(A), 4(B), 5(A), and 5(B), the ventilation pipe 35 comprises a main body 351 and a cover 352. The ventilation pipe 35 corresponds to the rotating structure of the present invention. Schematically, the cover 352 covers the side of the main body 351. The cover 352 and the main body 351 are spaced apart, and a cavity 359 is formed between the cover 352 and the main body 351. The cavity 359 corresponds to the second cavity of the present invention.

[0043] Functionally speaking, the size of the cavity 359 is large enough to accommodate the slack of the cable CBL, as described later; in other words, it is large enough to allow deformation of the cable CBL's routing shape inside the ventilation pipe 35 (see Figure 9(B), etc.).

[0044] (Main component of the vent pipe) Figure 6(A) is an external perspective view of the main body of the vent pipe, and Figure 6(B) is a plan view of the main body of the vent pipe.

[0045] As shown in Figures 6(A) and 6(B), the main body 351 comprises a substrate 3511, a base 3512, a main wall 3513, an external connection wall 3514, an external terminal housing 3516, an internal connection terminal 3517, a cable fixing part 3518, and a ventilation pipe cover 3519.

[0046] The substrate 3511 is an annular flat plate. The shape of the outer edge (external shape) of the substrate 3511 is approximately the same as the shape of the opening 3210 of the main body B321 of the lid 32 (see Figures 3(A), 3(B), 8(A), 8(B), etc.). In this case, the substrate 3511 is sized to fit into the opening 3210.

[0047] The base 3512 is approximately circular when viewed from above. The outer shape of the base 3512 is smaller than the outer shape of the substrate 3511. The base 3512 is positioned above the substrate 3511. The outer edge of the base 3512 connects to the inner edge of the substrate 3511. A recess C3512 is formed on the outer circumference of the base 3512, which is recessed inward when viewed from above.

[0048] The main wall 3513 is cylindrical with an internal space. One end of the cylindrical main wall 3513 in the direction of extension is connected to the upper surface of the base 3512. The direction of extension of the main wall 3513 is not perpendicular to the upper surface of the base 3512, but has a predetermined angle with respect to the upper surface. The internal space of the main wall 3513 is the inner part of the base 3512 to which the main wall 3513 is connected. of It communicates with the opening. The walls forming the cylindrical shape of the main wall 3513 correspond to the sides of the rotating structure of the present invention.

[0049] The external connecting wall 3514 is cylindrical with an internal space. 3514 The direction in which it extends is approximately the same as the direction in which the main wall 3513 extends. One end of the cylindrical extension direction of the external connecting wall 3514 connects to the other end of the cylindrical extension direction of the main wall 3513.

[0050] The internal space of the external connecting wall 3514 communicates with the internal space of the main wall 3513. These internal spaces form the ventilation holes 350 of the ventilation pipe 35.

[0051] The vent pipe cover 3519 is positioned at the connection point between the main wall 3513 and the external connecting wall 3514. The vent pipe cover 3519 is a flat plate. The vent pipe cover 3519 has a shape that extends radially with respect to the cylindrical central axis of the main wall 3513 and the external connecting wall 3514.

[0052] The external terminal housing 3516 is formed by connecting to the circumferential surface of the external connection wall 3514. The external terminal housing 3516 is equipped with electrical external connection terminals.

[0053] The internal connection terminal 3517 is located on the opposite side of the external terminal housing 3516, with the ventilation pipe cover 3519 in between. The internal connection terminal 3517 is equipped with an electrical internal connection terminal. The internal connection terminal 3517 is electrically connected to the electrical external connection terminal of the external terminal housing 3516.

[0054] The cable fixing portion 3518 is a flat plate. The cable fixing portion 3518 is shaped to protrude outward from the circumferential surface of the main wall 3513 and is a plate parallel to the cylindrical extension direction of the main wall 3513. The cable fixing portion 3518 is positioned in approximately the same location as the internal connection terminal 3517 in the circumferential direction of the main wall 3513. At least one groove or rod is formed in the cable fixing portion 3518. The cable fixing portion 3518 may also be formed in the cover 352.

[0055] (Ventilation pipe cover) Figure 7(A) is a perspective view of the front side of the vent cover, and Figure 7(B) is a perspective view of the back side of the vent cover.

[0056] The cover 352 comprises a substrate 3521, a base 3522, a cylindrical body 3523, a projection 3528, and a projection 3529.

[0057] The substrate 3521 is an annular flat plate. The shape of the outer edge (external shape) of the substrate 3521 is substantially the same as the opening 3210 of the main body B321 of the lid 32 (see Figures 3(A), 3(B), 8(A), 8(B), etc.) and the shape of the substrate 3511 of the main body 351.

[0058] The base 3522 is approximately circular in shape when viewed from above. The outer shape of the base 3522 is smaller than the outer shape of the substrate 3521. The base 3522 is positioned above the substrate 3521. The outer edge of the base 3522 connects to the inner edge of the substrate 3521.

[0059] The cylindrical body 3523 has an internal space 3524. One end of the cylindrical body 3523 in the direction of extension is connected to the base 3522. The opening cross-sectional area of ​​the other end of the cylindrical body 3523 in the direction of extension is the same as the planar area of ​​the vent cover 3519 of the main body 351, and the opening shape is the same as the external shape of the vent cover 3519. The cross-sectional area of ​​the internal space 3524 is approximately the same regardless of the position of the cylindrical body 3523 in the direction of extension.

[0060] The protrusions 3528 and 3529 protrude from the back surface of the substrate 3521. When viewed from above, the protrusions 3528 and 3529 are flattened ovals. However, the shape of the protrusions 3528 and 3529 is not limited to this shape; any shape without corners on its circumferential surface is acceptable.

[0061] The protrusions 3528 and 3529 are spaced apart along the circumferential direction of the substrate 3521. The space between these protrusions 3528 and 3529 is the guide opening G352 on the ventilation pipe 35 side.

[0062] (Placement of main subject and cover) The cover 352 is positioned on the main body 351 such that the main wall 3513 of the main body 351 is housed within the internal space 3524 of the cylindrical body 3523 of the cover 352. The base plate 3521 of the cover 352 faces the base plate 3511 of the main body 351 at a distance, and the base 3522 of the cover 352 faces the base 3512 of the main body 351.

[0063] The space created when the substrate 3521 of the cover 352 and the substrate 3511 of the main body 351 face each other, and the base 352 of the cover 352 2 and The space created when the main body 351 faces the base 3512 is connected to the main body 351 through the recess C3512 of the base 3512.

[0064] The projections 3528 and 3529 of the cover 352 are positioned in the recess C3512.

[0065] The opening at the other end of the cylindrical body 3523 of the cover 352 is closed by the ventilation pipe cover 3519 of the main body 351.

[0066] With this configuration, the ventilation pipe 35 has a cavity 359 between the main wall 3513 of the main body 351 and the cylindrical body 3523 of the cover 352 (see Figures 4(A), 4(B), 5(A), 5(B), and 8(B)).

[0067] This cavity 359 communicates with the outside from the outer end of the ventilation pipe 35 through the space between the base 3512 and the base 3522, the space created by the recess C3512, and the space between the substrate 3511 and the substrate 3521.

[0068] (How cables are routed inside ventilation pipes) As shown in Figures 4(A) and 4(B), within the vent pipe 35, the vent pipe side end of the cable CBL is connected to the internal connection terminal 3517 and routed along the direction in which the main wall 3513 extends. The cable CBL is routed circumferentially along the main wall 3513, while being secured by the grooves and projections of the cable fixing part 3518. The cable CBL is guided substantially along the circumferential direction of the main wall 3513 to the guide opening G352 between projections 3528 and 3529. From the guide opening G352, the cable CBL is routed into the space between the substrate 3511 and the substrate 3521 and pulled out to the outside of the vent pipe 35.

[0069] (Placement and rotation of the vent pipe on the cover) Figure 8(A) is a plan view showing the arrangement of the vent pipe on the cover, and Figure 8(B) shows the state with the cover removed as in Figure 8(A). Figures 9(A), 9(B), and 10 are plan views showing one aspect of the vent pipe during rotation.

[0070] The vent pipe 35 is housed in the opening 3210 of the lid 32. The vent pipe 35 is rotatably positioned relative to the lid 32.

[0071] More specifically, when viewing the lid 32 from above, the ventilation pipe 35 is rotatably positioned on the lid 32 such that the external opening of the ventilation hole 350 faces the side wall 325, with one end of rotation being the configuration where the external opening of the ventilation hole 350 faces the side wall 323 (the configuration shown in Figure 9(A)), and the other end of rotation being the configuration where the external opening of the ventilation hole 350 faces the opposite side of the side wall 323 (the side wall 317) (the configuration shown in Figure 10).

[0072] Ventilation pipe 35 from The pulled-out cable CBL is guided into the lid 32 through the guide opening G329 of the lid 32. The cable CBL is routed between several protruding walls 3297 and connected to and secured at the cable connector 3298.

[0073] Since the cover 32 has a hollow section 3299 and the ventilation pipe 35 has a hollow section 359, the routing shape of the cable CBL deforms as shown below in accordance with the rotation of the ventilation pipe 35.

[0074] In the embodiment shown in Figure 9(A), the cable CBL is wrapped around the circumferential surface of the main wall 3513 of the main body 351 of the ventilation pipe 35, and is guided through the space formed by the cavity 359 and recess C3512 of the ventilation pipe 35, bending in contact with the circumferential surface of the projection 3529, and into the space between the substrate 3511 and the substrate 3521. The cable CBL then bends along the circumferential surface of the guide wall 3291 and is guided through the guide opening G329 into the cavity 3299.

[0075] Because the circumferential surfaces of the projection 3529 and the guide wall 3291 are smooth (without sharp corners), the cable CBL does not bend sharply. Therefore, breakage of the cable CBL is suppressed.

[0076] In the embodiment shown in Figure 9(B), the rotation of the ventilation pipe 35 loosens the wrapping of the cable CBL around the main wall 3513. In this case, slack occurs in the cable CBL. This slack is accommodated to a certain extent in the cavity 359. This suppresses buckling of the cable CBL.

[0077] Furthermore, if the slack in the cable CBL cannot be tolerated by the cavity 359 alone, the cable CBL will be pushed out of the ventilation pipe 35. Here, because the lid 32 has a cavity 3299, the slack in the cable CBL pushed out of the ventilation pipe 35 is contained in the cavity 3299. This further reliably suppresses buckling of the cable CBL.

[0078] In the embodiment shown in Figure 10, the cable CBL is wrapped again around the circumferential surface of the main wall 3513 of the main body 351 of the ventilation pipe 35, and is guided through the space formed by the cavity 359 and recess C3512 of the ventilation pipe 35, bending in contact with the circumferential surface of the projection 3528, and into the space between the substrate 3511 and the substrate 3521. The cable CBL then bends along the circumferential surface of the guide wall 3292 and is guided through the guide opening G329 into the cavity 3299.

[0079] Because the circumferential surfaces of the projection 3528 and the guide wall 3292 are smooth (without sharp corners), the cable CBL does not bend sharply. Therefore, breakage of the cable CBL is suppressed.

[0080] As described above, by having the ventilation pipe 35 and the cover 32 configured as described, even if the ventilation pipe 35 rotates relative to the cover 32, buckling of the cable CBL is suppressed, and the breakage of the cable CBL is suppressed.

[0081] Furthermore, in the above configuration, the end of the cable CBL on the ventilation pipe 35 side is connected to the internal connection terminal 3517 in a curved state in the direction of extension of the main wall 3513, unlike the circumferential surface of the main wall 3513 around which the cable CBL is wrapped. The cable CBL is then fixed by the cable fixing part 3518 at the curved position on the main wall 3513. This relieves the stress caused by the rotation of the ventilation pipe 35 at the connection point of the cable CBL on the ventilation pipe 35 side. Therefore, disconnection of the cable CBL at the connection point on the ventilation pipe 35 side is suppressed.

[0082] Furthermore, in the above configuration, the end of the cable CBL on the lid 32 side is fixed through a plurality of protruding walls 3297. The outer surfaces of the plurality of protruding walls 3297 are arc-shaped. This relieves the stress caused by the rotation of the ventilation pipe 35 at the connection part on the lid 32 side of the cable CBL. Therefore, disconnection of the cable at the connection part on the lid 32 side of the cable CBL is suppressed.

[0083] Furthermore, the ventilation pipe 35 and the cover 32 have the following relationship.

[0084] The guide wall 3292 does not overlap with the first common external tangent line Ls1 (dotted line in Figure 8(B)) between a virtual circle containing the arc shape formed by the circumferential surface of the guide wall 3291 (dashed line in Figure 8(B) (first virtual circle)) and a circle containing the side surface of the ventilation pipe 35 that the cable CBL contacts (the circumferential surface connecting the outer circumferential end of the base 3512 of the main body 351 and the inner circumferential end of the substrate 3511) (second virtual circle). As a result, when the ventilation pipe 35 rotates, unwanted contact between the cable CBL and the guide wall 3292 is suppressed.

[0085] The guide wall 3291 does not overlap with the second common external tangent line Ls2 (the dashed line in Figure 8(B)) formed by the arc of the circumferential surface of the guide wall 3292 (the third virtual circle) and the circle (the second virtual circle) that includes the side surface of the ventilation pipe 35 that the cable CBL of the ventilation pipe 35 contacts (the circumferential surface connecting the outer edge of the base 3512 of the main body 351 and the inner edge of the substrate 3511). As a result, when the ventilation pipe 35 rotates, unwanted contact between the cable CBL and the guide wall 3291 is suppressed.

[0086] These measures prevent unwanted stress from being applied to the cable CBL due to the rotation of the ventilation pipe 35. Therefore, buckling and breakage of the cable CBL are suppressed.

[0087] Furthermore, as shown in Figure 8(B), for example, the intersection point Ps of the first common external tangent line Ls1 and the second common external tangent line Ls2 is defined as the cavity 359 and the cavity 32 9 Point 9 is positioned in the region of opposite vertical angles. This prevents the cable CBL from undesirably colliding with the wall of the cover 32 or the wall of the ventilation pipe 35 when the cable CBL is routed between the cavity 359 and the cavity 3299. Therefore, it prevents undesirable stress from being applied to the cable CBL.

[0088] Furthermore, the height or width of the space formed by the side surface (circumferential surface) of the base 3512, the substrate 3511, the substrate 3521, and the peripheral wall 3290 (corresponding to the tubular portion of the present invention) is preferably three times or less the width of the cable CBL. This suppresses unwanted bending of the cable CBL in the space formed between the substrate 3511 and the substrate 3521. Note that the upper and lower walls of this tubular portion are not limited to both being components of the ventilation pipe 35. For example, one may be a component of the ventilation pipe 35 and the other may be a component of the base unit 30.

[0089] Furthermore, it is preferable that the outer surface of the cable CBL be covered with fluororesin. This improves the slipperiness of the cable CBL and suppresses unwanted bending and buckling.

[0090] (1) Non-rotating structure and A rotating structure rotatably positioned relative to a non-rotating structure, A cable having one end connected to the non-rotating structure and the other end connected to the rotating structure, It has, The non-rotating structure has a first cavity that allows deformation of the cable routing shape when the rotating structure rotates, The aforementioned rotating structure is A main body having a side portion around which the cable is wound, A cover positioned spaced apart from the side of the main body, Between the main body and the cover is a second cavity that allows deformation of the cable routing shape when the rotating structure rotates, A cable wiring structure for a rotating structure having the following characteristics.

[0091] (2) The subject said to be, The cylindrical wall which is the side portion, A connection terminal is provided which the cable is connected in a direction different from the circumferential direction, and which is disposed in a direction perpendicular to the circumferential direction of the cylindrical wall at a position different from the second cavity, Equipped with, The aforementioned rotating structure is A cable wiring structure to the rotating structure of (1), comprising a cable fixing portion that curves and fixes the cable in a direction toward the connection terminal from the circumferential direction.

[0092] (3) The non-rotating structure is A first guide wall and a second guide wall are arranged at intervals around the rotating structure, Between the first guide wall and the second guide wall, there is a guide opening through which the cable is inserted, It has, The first guide wall and the second guide wall have an arc shape on the guide opening side, The first common outer tangent line, which is tangent to the first virtual circle that overlaps the arc of the first guide wall and the second virtual circle that overlaps the side portion of the main body of the rotating structure, does not overlap the second guide wall. A cable wiring structure to the rotating structure of (1) or (2), wherein the third virtual circle that overlaps the arc of the second guide wall and the second common external tangent line that is tangent to the second virtual circle, respectively, do not overlap the first guide wall.

[0093] (4) A cable wiring structure for the rotating structure of (3), wherein the first cavity and the second cavity are located in a region of opposite vertical angles with respect to the intersection of the first common external tangent and the second common external tangent.

[0094] (5) When viewed in plan with respect to the rotating structure and the non-rotating structure, the rotating structure and the non-rotating structure are positioned outward from the cylindrical wall of the main body and include a tubular portion formed by the rotating structure and the non-rotating structure, A cable wiring structure to any of the rotating structures (1) to (4), wherein the height of the tubular portion is no more than three times the width of the cable.

[0095] (6) When viewed in plan with respect to the rotating structure and the non-rotating structure, the rotating structure and the non-rotating structure are positioned outward from the cylindrical wall of the main body and include a tubular portion formed by the rotating structure and the non-rotating structure, A cable wiring structure to any of the rotating structures (1) to (5), wherein the width of the tubular portion is 3 times or less the width of the cable.

[0096] (7) A cable wiring structure to any of the rotating structures (1) to (5), wherein the outer surface of the cable is covered with fluororesin.

[0097] (8) A cable wiring structure to any of the rotating structures of (1) to (7), The aforementioned non-rotating structure is the main body that generates airflow, The aforementioned rotating structure is a vent pipe in a CPAP device. [Explanation of Symbols]

[0098] 10:CPAP device 20: Main Unit 30: Base Unit 31: Box body 32: Lid 35: Vent 36, 39: Air intake 38: Exhaust vent 311: Upper wall 312: Lower wall 313, 314, 315, 316, 317: Side wall 321: Upper wall 323, 325, 326: Side wall 350: Ventilation holes 351: Subject 352: Cover 359: Cavity 3210:Aperture 3211: Main unit cover 3290: Peripheral wall 3291, 3292: Guide wall 3297: Convex wall 3298: Cable connection part 3299: Cavity 3511: Circuit board 3512: Base 3513: Main wall 3514: External connection wall 3516: External terminal housing 3517: Internal connection terminal 3518: Cable fixing part 3519: Ventilation pipe cover 3521: Circuit board 3522: Base 3523:Cylinder 3524: Interior space 3528, 3529:Protrusion B321: Main unit C3512: Recess CBL: Cable G329, G352: Guide opening Ls1: 1st common external tangent Ls2: 2nd common external tangent Ps: intersection S31A, S31B, S32: Space

Claims

1. Non-rotating structures and A rotating structure rotatably positioned relative to a non-rotating structure, A cable having one end connected to the non-rotating structure and the other end connected to the rotating structure, It has, The non-rotating structure has a first cavity that allows deformation of the cable routing shape when the rotating structure rotates, The aforementioned rotating structure is A main body having a side portion around which the cable is wound, A cover positioned spaced apart from the side of the main body, Between the main body and the cover is a second cavity that allows deformation of the cable routing shape when the rotating structure rotates, Having, Cable routing structure for a rotating structure.

2. The aforementioned entity is, The cylindrical wall which is the side portion, A connection terminal is provided which the cable is connected in a direction different from the circumferential direction, and which is disposed in a direction perpendicular to the circumferential direction of the cylindrical wall at a position different from the second cavity, Equipped with, The aforementioned rotating structure is The cable fixing part is provided for curving and fixing the cable in a direction toward the connection terminal from the circumferential direction. Cable wiring structure for a rotating structure according to claim 1.

3. The non-rotating structure is A first guide wall and a second guide wall are arranged at intervals around the rotating structure, Between the first guide wall and the second guide wall, there is a guide opening through which the cable is inserted, It has, The first guide wall and the second guide wall have an arc shape on the guide opening side, The first common outer tangent line, which is tangent to the first virtual circle that overlaps the arc of the first guide wall and the second virtual circle that overlaps the side portion of the main body of the rotating structure, does not overlap the second guide wall. The third virtual circle that overlaps the second guide wall in an arc shape, and the second common external tangent line that is tangent to the second virtual circle, respectively, do not overlap the first guide wall. A cable wiring structure for a rotating structure according to claim 1 or claim 2.

4. The first cavity and the second cavity are located in a region with vertically opposite angles based on the intersection of the first common external tangent and the second common external tangent. Cable wiring structure for a rotating structure according to claim 3.

5. Viewed in plan with respect to the rotating structure and the non-rotating structure, the rotating structure and the non-rotating structure are positioned outward from the cylindrical wall of the main body and include a tubular portion formed by the rotating structure and the non-rotating structure, The height of the tubular portion is no more than three times the width of the cable. A cable wiring structure for a rotating structure according to claim 1 or claim 2.

6. Viewed in plan with respect to the rotating structure and the non-rotating structure, the rotating structure and the non-rotating structure are positioned outward from the cylindrical wall of the main body and include a tubular portion formed by the rotating structure and the non-rotating structure, The width of the tubular portion is no more than three times the width of the cable. A cable wiring structure for a rotating structure according to claim 1 or claim 2.

7. The outer surface of the cable is covered with fluororesin. Cable wiring structure for a rotating structure according to claim 1.

8. A cable wiring structure to a rotating structure according to claim 1 or claim 2, The aforementioned non-rotating structure is the main body that generates airflow, The rotating structure is a ventilation pipe. CPAP device.

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