JP6917826B2 - Bathroom heater - Google Patents

Description

The present invention relates to a bathroom heater, particularly a bathroom heater embedded in the ceiling of a bathroom.

Conventionally, in a so-called ceiling-embedded bathroom heater that is installed in a state of being embedded in a fixture mounting port opened on the ceiling of a bathroom, an air passage for guiding air taken into the main body case by a circulation fan into the bathroom. However, it is composed of a fixed main body cylinder that extends from the arrangement part of the circulation fan and a movable cylinder that is continuously installed at the lower end of the main body cylinder so that it can be moved up and down. When attaching the cover to the installed main body case with the ceiling sandwiched from the bathroom side, by pulling down the movable cylinder part from the predetermined upper position in the main body case, the lower end opening of the movable cylinder part regardless of the thickness of the ceiling Is known to be connectable to the air outlet of the cover (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-138693

However, in the above-mentioned conventional bathroom heater, since a predetermined clearance is provided between the movable cylinder portion and the main body cylinder portion, when the movable cylinder portion is pulled down from the main body case, the movable cylinder portion moves back and forth and left and right. In some cases, it rattled and was caught in the cylinder of the main body and could not be pulled down smoothly.

The present invention has been made in view of the above problems, and an object of the present invention is to improve installation workability in a bathroom heater in which the position of the lower end opening of the air passage can be adjusted up and down.

The present invention includes a box-shaped main body case having an open bottom surface arranged behind the ceiling of the bathroom, an air supply means for introducing air in the bathroom into the main body case, and air introduced into the main body case into the bathroom. It is a bathroom heater provided with a guiding air passage, and the air passage is a main body cylinder portion extending from an arrangement portion of an air supply means toward a case opening on the lower surface of the main body case, and a case of the main body cylinder portion. It is connected to the end on the opening side so that it can move up and down, and is composed of a movable cylinder that opens downward. It is provided on one side of the movable cylinder, and the movable cylinder is lowered from a predetermined upper position. It has a guide portion that movably supports the guide portion and a guide receiving portion that is provided on the inner side wall of the main body case facing the one side surface portion and holds the guide portion so as to be slidable up and down. When the direction opposite to the inner side wall is the left-right direction, and the direction orthogonal to the left-right direction and the up-down direction is the front-rear direction, at least one of the guide portion and the guide receiving portion elastically engages with the other in the front-rear direction. , The movement of the movable cylinder portion in the front-rear direction is restricted.

In this case, the guide portion provided on one side surface portion of the movable cylinder portion and the guide receiving portion provided on the inner side wall of the main body case are orthogonal to the facing direction between the one side surface portion and the inner side wall in the front-rear direction. Since the movable cylinder is elastically engaged with and the movement of the movable cylinder in the front-rear direction is restricted, the movable cylinder is smoothly pulled down from the upper position when the lower end opening of the movable cylinder is connected to the outlet of the cover. be able to.

According to the first aspect of the present invention, in the bathroom heater, the guide portion engages with the guide receiving portion in opposite outward directions in the front-rear direction at a position closer to the base end, and the movable cylinder portion is hooked at the upper position. When the movable cylinder part moves from the upper position to the lower position, which is hooked by the temporary fixing part , at the upper end position with the pair of temporary fixing parts to be engaged, the guide receiving part is engaged in the opposite outward directions in the front-rear direction. In addition, it is provided with a pair of retaining portions that restrict the downward movement of the movable cylinder portion.

Like the conventional bathroom heater described above, a claw portion for temporary fixing is projected from one side surface portion of the movable cylinder portion toward the outer facing surface portion, and an engaging portion provided on the outer facing surface portion. In the case where the movable cylinder portion is configured to be engaged and held at a predetermined upper position in the main body case by engaging the claw portion with the above, the clearance direction between the side surface portion and the outer facing surface portion ( Due to the rattling in the opposite direction), the positional relationship between the claw portion and the engaging portion was displaced, and a constant engaging strength could not be obtained. Therefore, the movable cylinder portion may not be easily pulled down from the upper position or may be inadvertently removed from the upper position.

However, in the present invention, the temporary fixing portion provided on the guide portion is configured to engage with the guide receiving portion from opposite directions in the front-rear direction, and to hook the movable cylinder portion at the upper position. Regardless of the rattling of the movable cylinder portion in the front-rear direction, the temporary fixing portion can be engaged with the guide receiving portion in a fixed positional relationship. That is, the positional relationship between the temporary fixing portion and the guide receiving portion is unlikely to shift, and a constant engagement strength can be ensured. Therefore, when the movable cylinder portion is pulled down from the upper position, there is no variation in the ease of disengagement of the temporary fixing portion from the guide receiving portion, and the movable cylinder portion can always be pulled down with a constant force. The downward movement of the movable cylinder portion is limited to the lower position where the retaining portion engages with the guide receiving portion.

According to the second aspect of the present invention, in the bathroom heater, the movable cylinder portion abuts on the other side surface portion of the movable cylinder portion facing the opposite side of the one side surface portion, and the movable cylinder portion is allowed to move in the vertical direction. A guide plate for restricting movement in the left-right direction is provided, and the guide plate is formed so as to extend downward from the upper part of one side surface portion of the main body cylinder portion so as to have a gap between the guide plate and the main body cylinder portion. The other side surface portion of the movable cylinder portion is inserted from below into the gap formed between one side surface portion of the main body cylinder portion and the guide plate, and is sandwiched by one side surface portion of the main body cylinder portion and the guide plate. It is a configuration that is made.

In this case, the guide plate and the guide receiving portion regulate the movement of the movable cylinder portion in the front-rear direction, while the guide plate regulates the movement of the movable cylinder portion in the left-right direction, so that the movable cylinder portion is made smoother. Can be moved up and down.

As described above, according to the present invention, since the movable cylinder portion can be smoothly moved up and down, it is possible to reduce the time and effort required to connect the lower end opening of the movable cylinder portion to the air outlet portion of the cover. Therefore, the installation workability is improved.

FIG. 1 is a schematic vertical sectional view of a bathroom heater according to an embodiment of the present invention. FIG. 2 is a schematic vertical sectional view of the bathroom heater according to the embodiment of the present invention. FIG. 3 is a perspective view of the vicinity of the guide portion of the bathroom heater according to the embodiment of the present invention. FIG. 4 is a perspective view of the vicinity of the guide plate of the bathroom heater according to the embodiment of the present invention. FIG. 5 is a perspective view showing another embodiment A around the guide portion of the bathroom heater according to the embodiment of the present invention. FIG. 6 is a perspective view showing another embodiment B around the guide portion of the bathroom heater according to the embodiment of the present invention. FIG. 7 is a perspective view showing another embodiment C around the guide portion of the bathroom heater according to the embodiment of the present invention.

Next, a mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the bathroom heater 1 according to the embodiment of the present invention is a so-called ceiling-embedded bathroom installed in a state of being embedded in an appliance mounting port 410 opened in the ceiling 41 of the bathroom 4. A heater, which is a substantially rectangular box-shaped main body case 11 whose lower surface is open, and a downward-viewing substantially rectangular cover 12 that covers the lower surface opening (hereinafter, referred to as “case opening”) 110 of the main body case 11 from below. The outer shell is composed of and.

The cover 12 has a suction port 121 formed of a plurality of slits for introducing the air in the bathroom 4 into the inside of the main body case 11 (hereinafter, referred to as “inside the case”) 10, and the air introduced into the case inside 10. A substantially rectangular elongated hole-shaped air outlet 122 is provided for leading to the bathroom 4. The air outlet 122 extends at a position closer to one long edge 12A of the cover 12. In the present specification, the side wall of the main body case 11 on the long edge 12A side, that is, the side wall on the outlet 122 side is located on the front wall 11A and on the side opposite to the long edge 12A, and the side wall facing the front wall 11A is rearward. The two facing side walls connecting the side edges of the wall 11B, the front wall 11A and the rear wall 11B are the left side wall 11C and the right side wall 11D, respectively, and the front wall 11A and the rear wall 11B face each other in the front-rear direction and the left side wall. The direction in which the 11C and the right side wall 11D face each other is referred to as the left-right direction, and the direction orthogonal to each of the front-back and left-right directions is referred to as the up-down direction.

A flange 112 is formed outwardly over the entire circumference of the outer peripheral edge of the lower end of the main body case 11, and the main body case 11 has a case opening 110 above the fixture mounting port 410 (attic 40 side). The upper surface of the flange 112 is fixed to the attic 40 by a plurality of hanging bolts and nuts (not shown) in a state where the upper surface of the flange 112 is in contact with the lower part of the peripheral edge of the fixture mounting port 410. On the other hand, the cover 12 is screwed and fixed to the main body case 11 from the bathroom 4 side so as to cover the entire fixture mounting port 410 from below. In this way, the bathroom heater 1 is installed so that the main body case 11 is first fixed to the ceiling 40 and the ceiling 41 is sandwiched between the flange 112 and the cover 12 from above and below.

The case interior 10 incorporates a circulation fan 14 that circulates the air in the bathroom 4 through the air passage 13 of the case interior 10, and a heat exchanger 15 that heats the air introduced into the air passage 13. The front wall 11A of the main body case 11 is provided with an exhaust fan 17 that introduces the air in the bathroom 4 into the case inside 10 and discharges it to the outside through an exhaust pipe (not shown). As described above, the bathroom heater 1 according to the present embodiment is an air conditioner provided with an exhaust fan 17, and in addition to the heating operation in which the air in the bathroom 4 is heated and circulated by the heat exchanger 15, the bathroom 4 It is configured to be able to execute a drying operation in which the air inside is discharged to the outside by the exhaust fan 17 and circulated in the bathroom 4 by the circulation fan 14, a ventilation operation in which the air in the bathroom 4 is discharged to the outside by the exhaust fan 17. ing.

The circulation fan 14 is a substantially cylindrical sirocco fan that is long to the left and right, and is rotatably supported between the left and right inner surfaces of the air passage 13. Although not shown, a fan motor serving as a drive source for the circulation fan 14 is connected to a shaft portion at one end of the circulation fan 14.

The heat exchanger 15 is a heat medium circulation type heat exchanger that heats the surrounding air by the heat of a heat medium such as hot water supplied from a heat source machine (not shown), and a plurality of heat exchangers 15 are arranged vertically facing each other in the left-right direction. It is composed of a heat absorbing fin 151 to be arranged and a plurality of heat absorbing tubes 152 inserted into the heat absorbing fin 151 from the left and right directions, and is provided at a position downstream of the circulation fan 14 (suction port 121 side) in the air passage 13. ing.

The air passage 13 is provided on the main body cylinder portion 20 extending diagonally forward and downward from the arrangement portion of the circulation fan 14 toward the front position of the case opening 110, and on the case opening 110 side of the main body cylinder 20. It is composed of a movable cylinder portion 21 extending downward from an end portion (hereinafter, referred to as “downstream end portion”) 201. Both the main body cylinder portion 20 and the movable cylinder portion 21 are formed in a substantially rectangular cylinder shape having a wide width in the left-right direction. The opening 130 on the lower end side of the movable cylinder portion 21 (hereinafter, referred to as “lower end opening”) becomes the downstream end of the air passage 13, and is connected to the peripheral edge of the air outlet 122 of the cover 12 from above.

The main body cylinder portion 20 is integrally formed with the main body case 11, and is formed so as to extend from a substantially central position between the front and rear of the case inner 10 to a position substantially coincident with the case opening 110. The heat exchanger 15 is arranged so as to cover the circulation fan 14 from below and behind in the space on the upstream side of the main body cylinder portion 20.

The movable cylinder portion 21 is in a state where it can slide up and down between a predetermined upper position (temporary fixing position) housed in the case inner portion 10 and a predetermined lower position protruding downward from the case opening 110. It is ring-mounted on the outer periphery of the downstream end portion 201 of the tubular portion 20. Although not shown, the peripheral edge of the lower end opening 130 is provided with a screw hole for screwing and fixing the movable cylinder 21 to the peripheral edge of the outlet 122, and the cover 12 is screwed and fixed to the main body case 11. Then, by screwing and connecting a screw to the screw hole from the lower surface side of the cover 12, the lower end opening 130 abuts and is connected to the peripheral edge of the air outlet 122. As a result, even if the thickness of the peripheral edge of the instrument mounting port 410 is different, an unnecessary gap is not formed between the lower end opening 130 of the movable cylinder portion 21 and the peripheral edge of the air outlet 122, and air leakage is unlikely to occur.

Inside the movable cylinder portion 21, a louver 18 is provided that can change the air blowing direction during operation and close the lower end opening 130 when stopped. As shown in FIG. 2, the louver 18 is rotatably supported by the left and right side surface portions 21C and 21D of the movable cylinder portion 21 at the left and right shaft ends 18C and 18D. One shaft end (here, the right shaft end) 18D of the louver 18 is connected to a wind direction control motor 180 for rotating the louver 18. The wind direction control motor 180 is attached to the outer surface of one side surface portion (here, the right side surface portion, hereinafter referred to as “the right side surface portion of the movable cylinder) 21D of the movable cylinder portion 21).

As shown in FIGS. 2 and 3, the movable cylinder portion 21 is mounted on the outer peripheral surface of the other side surface portion (here, the left side surface portion, hereinafter referred to as “the left side surface portion of the movable cylinder”) 21C of the movable cylinder portion 21 as the main body case. A claw portion 22 is provided as a guide portion that supports the portion 11 so as to be movable downward from a predetermined upper position.

Inside the left side wall 11C of the main body case 11, a substantially rectangular box-shaped electrical case 19 for accommodating electrical components such as a control board that controls the operation of the bathroom heater 1 is provided, and the left side surface portion 21C of the movable cylinder portion 21C. Faces the right side surface portion 19D of the electrical case 19. That is, the right side surface portion (hereinafter referred to as “case inner side wall”) 19D of the electrical case 19 constitutes one of the inner side walls of the main body case 11 as the outer facing surface portion of the movable cylinder left side surface portion 21C.

On the outer surface of the inner side wall 19D of the case, a claw engaging portion 32 as a guide receiving portion for engaging and holding the claw portion 22 so as to be slidable up and down is provided. The claw engaging portion 32 is formed so as to project from the outer surface of the inner side wall 19D of the case toward the right side, that is, toward the left side surface portion 21C of the movable cylinder, and when the movable cylinder portion 21 is in a predetermined upper position, the movable cylinder portion 32 is formed. When the upper surface of the trapezoidal portion 211 formed on the left side surface portion 21C abuts on the lower surface of the claw engaging portion 32, the movement of the movable cylinder portion 21 upward from the upper position is restricted.

A substantially rectangular claw insertion hole 320 that opens in the vertical direction is provided in the substantially central portion of the claw engaging portion 32, and the claw portion 22 of the movable cylinder portion 21 slides vertically into the claw insertion hole 320 from below. It is movably inserted.

As shown in FIG. 3, the claw portion 22 is composed of two elongated plate-shaped slide plate pieces 221, 222 arranged in the front-rear direction. The slide plate pieces 221, 222 are formed so as to extend upward from the upper surface of the trapezoidal portion 211, respectively.

The right side surfaces (hereinafter, "right side surface of the claw") 22D of the slide plate pieces 221, 222 respectively face each other in close proximity to the right side surface of the inner circumference of the claw insertion hole 320 (hereinafter, "right side surface of the insertion hole") 32C. The right side surface portion 22D of the claw comes into surface contact with the right side surface portion 32C of the insertion hole, so that the movable cylinder portion 21 is restricted from moving to the right.

When the movable cylinder portion 21 is in a predetermined upper position, the front surface portion (hereinafter, referred to as “claw front surface portion”) 22A of the front slide plate piece 221 comes into surface contact with the inner peripheral front surface portion 32A of the claw insertion hole 320. The rear surface portion (hereinafter, referred to as “claw rear surface portion”) 22B of the slide plate piece 222 on the rear side is in surface contact with the inner peripheral rear surface portion 32B of the claw insertion hole 320.

The slide plate pieces 221, 222 all have elasticity that allows them to swing in the front-rear direction within a predetermined range, and the claw front surface portion 22A and the claw rear surface portion 22B each have an inner peripheral surface portion of the claw insertion hole 320 facing each other. That is, the movement of the movable cylinder portion 21 in the front-rear direction is restricted by elastically contacting and engaging with the inner peripheral front surface portion 32A or the inner peripheral rear surface portion 32B.

The front surface portion 22A of the nail and the rear surface portion 22B of the nail are formed so as to protrude outwardly opposite to each other in the front-rear direction, respectively, from above in the opposite outward direction with respect to the upper peripheral edge 321 of the nail insertion hole 320. A temporary fixing protrusion 33 is provided as a temporary fixing portion for hooking the movable cylinder portion 21 at a predetermined upper position by engaging with the movable cylinder portion 21.

The upper end positions of the claw front surface portion 22A and the claw rear surface portion 22B are respectively formed so as to project outwardly opposite to each other, and when the movable cylinder portion 21 moves from the upper position (temporary fixing position) to the lower position, the claw insertion hole is formed. A retaining protrusion 34 is provided to prevent the movable cylinder portion 21 from falling off by engaging with the upper peripheral portion 321 of the 320 in the opposite outward directions in the front-rear direction from above.

The temporary fixing protrusion 33 is formed in a substantially V-shape in a lateral view in which the outer lower surface (lower half area of the outer surface) is inclined outward and upward, and the outer lower surface (upper half area of the outer surface) is inclined outward and downward. ing. Therefore, when the movable cylinder portion 21 is pulled down from the upper position, a pressing force is applied inward (front-back direction) from the upper peripheral portion 321 of the claw insertion hole 320 to the outer lower surface of the temporary fixing protrusion 33, and the slide plate piece 221 , 222 is elastically tilted inward, and the temporary fixing protrusion 33 enters the inside of the claw insertion hole 320 against the elastic force of the slide plate pieces 221,222. As a result, the hooked state between the temporary fixing protrusion 33 and the peripheral upper portion 321 is released. Then, when the movable cylinder portion 21 is further pulled down and the pressing force on the temporary fixing protrusion 33 disappears, the movable cylinder portion 21 is in a state where it can freely move up and down.

However, since the retaining protrusions 34 are formed so as to protrude outward (front-back direction) from the claw front surface portion 22A and the claw rear surface portion 22B at the upper ends of the slide plate pieces 221, 222, respectively, the lower side of the movable cylinder portion 21. The movement to the claw insertion hole 320 is limited to the lower position where the retaining protrusion 34 engages with the upper peripheral edge 321 of the claw insertion hole 320.

On the other hand, when the movable cylinder portion 21 is pushed up from the lower position and the lower peripheral edge 322 of the claw insertion hole 320 comes into contact with the outer upper surface of the temporary fixing protrusion 33, the lower peripheral edge 322 of the claw insertion hole 320 with respect to the outer upper surface. A pressing force is applied inward (front-back direction), and while the slide plate pieces 211 and 222 are elastically tilted inward, the temporary fixing protrusion 33 resists the elastic force of the slide plate pieces 221,222 and the claw insertion hole 320. Get inside. When the movable cylinder portion 21 is further pushed up, the temporary fixing protrusion 33 is engaged with the upper peripheral portion 321 of the claw insertion hole 320, and the claw front surface portion 22A and the claw rear surface portion 22B face each other of the claw insertion hole 320. The movable cylinder portion 21 is engaged and held in the upper position by contacting and engaging with the inner peripheral surface portion (inner peripheral front surface portion 32A or inner peripheral rear surface portion 32B).

In the bathroom heater 1 according to the present embodiment, the movable cylinder portion 21 is engaged and held at a predetermined upper position in the main body case 11, that is, a temporary fixing position in the factory-shipped state before installation. Therefore, at the time of installation, after the main body case 11 is suspended and fixed to the ceiling 40 as described above, the cover 12 is attached to the main body case 11 from the bathroom 4 side and provided on the peripheral edge of the movable cylinder portion 21. Tighten the screw holes from the lower surface side of the cover 12. As a result, the movable cylinder portion 21 is pulled down to release the hooked state of the temporary fixing protrusion 33 with respect to the claw engaging portion 32, and further screw tightening connects the lower end opening 130 and the peripheral edge of the air outlet 122. Will be done. Further, when the cover 12 is removed from the main body case 11 for maintenance after installation, the movable cylinder portion 21 is pushed up to the original temporary fixing position, and the temporary fixing protrusion 33 is hooked on the claw engaging portion 32. Return it to the stopped state. By engaging and holding the movable cylinder portion 21 at the temporarily fixed position in this way, the movable cylinder portion 21 does not protrude downward from the case opening 110, so that the cover 12 can be attached to the main body case 11 during installation or after maintenance. The movable cylinder portion 21 does not interfere with the work when it is attached to the cover 12, and it is possible to prevent scratches and damage due to contact between the cover 12 and the movable cylinder portion 21.

As shown in FIGS. 2 and 4 , the movable cylinder portion 21 is moved up and down by abutting the inside of the main body case 11 from the outside on one side surface portion (here, the right side portion of the movable cylinder) 21D of the movable cylinder portion 21. A guide plate 24 is provided that allows movement in the direction and restricts movement in the left-right direction (here, the right direction).

The guide plate 24 extends downward from one side surface portion (here, the right side surface portion, hereinafter referred to as “main body cylinder right surface portion”) 20D of the main body cylinder portion 20 substantially parallel to the main body cylinder right side surface portion 20D. A predetermined gap S is formed between the right side surface portion 20D of the main body cylinder and the guide plate 24. The movable cylinder right side surface portion 21D is inserted into the gap S from below. That is, the movable cylinder portion 21 is allowed to move in the vertical direction and the movement in the left-right direction is restricted by sandwiching the movable cylinder right side surface portion 21D by the main body cylinder right side surface portion 20D and the guide plate 24 from the left and right. ..

According to the bathroom heater 1, the claw portion 22 provided on the left side surface portion 21C of the movable cylinder and the claw engaging portion 32 provided on the inner side wall 19D of the case are formed between the left side surface portion 21C of the movable cylinder and the inner side wall 19D of the case. Since the movable cylinder portion 21 is elastically engaged in the front-rear direction orthogonal to the opposite direction and the movement of the movable cylinder portion 21 in the front-rear direction is restricted, the lower end opening 130 of the movable cylinder portion 21 is covered with the peripheral edge portion of the outlet 122 of the cover 12. The movable cylinder portion 21 can be smoothly pulled down from the upper position when connected to. As a result, it is possible to reduce the time and effort required to connect the lower end opening 130 of the movable cylinder portion 21 to the peripheral edge portion of the air outlet 122, and the installation workability is improved.

Moreover, in this case, the temporary fixing protrusion 33 provided on the claw portion 22 engages with the claw engaging portion 32 from opposite directions in the front-rear direction, whereby the movable cylinder portion 21 is hooked at the upper position. Therefore, regardless of the rattling of the movable cylinder portion 21 in the front-rear direction, the temporary fixing protrusion 33 can always be engaged with the claw engaging portion 32 in a constant positional relationship. That is, the positional relationship between the temporary fixing protrusion 33 and the claw engaging portion 32 is unlikely to shift, and a constant engaging strength can be ensured. As a result, when the movable cylinder portion 21 is pulled down from the temporary fixing position, there is no variation in the ease of disengagement of the temporary fixing protrusion 33 from the claw engaging portion 32, and the movable cylinder portion 21 can always be pulled down with a constant force. Therefore, the installation workability is further improved.

Further, in this case, the movement of the movable cylinder portion 21 in the front-rear direction is restricted by the claw portion 22 and the claw engaging portion 32, while the guide plate 24 provided in the main body case 11 restricts the movement of the movable cylinder portion 21. Since the movement in the left-right direction is restricted, the movable cylinder portion 21 can be moved up and down more smoothly. As a result, the time and effort required to connect the lower end opening 130 of the movable cylinder 21 to the peripheral edge of the air outlet 122 can be further reduced, and the installation workability is further improved.

In particular, in the bathroom heater 1, the wind direction control motor 180 of the louver 18 is provided on the right side surface portion 21D of the movable cylinder, and the center of gravity of the movable cylinder portion 21 is on the right side of the center between the left and right, that is, the right side surface portion 21D of the movable cylinder. It is biased to the side. Therefore, when the movable cylinder portion 21 is pulled down from the upper position, the movable cylinder portion 21 tends to tilt downward on the right side with the engaging portion between the claw portion 22 and the claw engaging portion 32 as an axis. However, in this case, since the guide plate 24 is provided on the outside of the movable cylinder right side surface portion 21D, it is also restricted that the movable cylinder portion 21 is greatly tilted downward on the right side as described above. As a result, the movable cylinder portion 21 can be moved up and down more smoothly, and the installation workability is further improved.

Further, in this case, since the right side surface portion 22D of the claw comes into surface contact with the right side surface portion 32C of the insertion hole, the movement of the movable cylinder portion 21 in the left-right direction is more reliably restricted, so that the movable cylinder portion 21 can be made smoother. It can be moved up and down. As a result, the time and effort required to connect the lower end opening 130 of the movable cylinder 21 to the peripheral edge of the air outlet 122 can be further reduced, and the installation workability is further improved.

In the above embodiment, the one in which the claw portions 22 are composed of two slide plate pieces 221, 222 arranged in the front-rear direction has been described, but as in the form A shown in FIG. 5 and the form B shown in FIG. 22 may be formed in the shape of one substantially plate.

More specifically, in the form A shown in FIG. 5, a thin-walled portion 220 having elasticity is formed in the central portion of the claw portion 22 in the front-rear direction, and the front surface portion 22A of the claw is formed by the elastic force of the thin-walled portion 220 in the front-rear direction. And the claw rear surface portion 22B elastically contact and engage with the opposite inner peripheral surface portion (inner peripheral front surface portion 32A or inner peripheral rear surface portion 32B) of the claw insertion hole 320, respectively. Further, when the movable cylinder portion 21 is pulled down from the upper position and a pressing force is applied to the contact portion between the temporary fixing protrusion 33 and the claw engaging portion 32 from the front-rear direction, the thin-walled portion 220 is elastically deformed. The hooked state of the temporary fixing protrusion 33 with respect to the claw engaging portion 32 is released. As a result, the same effect as that of the above-described embodiment is obtained. Further, since the claw portion 22 has the above configuration, it is possible to secure sufficient deformation strength of the claw portion 22 with respect to the pressing force from the front-rear direction. Therefore, even if the movable cylinder portion 21 is repeatedly moved up and down, the claw portion 22 The engaging force between the 22 and the claw engaging portion 32 is unlikely to decrease.

On the other hand, in the form B shown in FIG. 6, the claw engaging portion 32 is composed of two engaging pieces 35 having a substantially L-shaped upward view facing each other in the front-rear direction, and the elastic force of the engaging pieces 35 in the front-rear direction causes the engaging pieces 35. , The inner side surface portion (inner peripheral front surface portion 32A or inner peripheral rear surface portion 32B) of the engaging piece 35 is elastically contact-engaged with the claw front surface portion 22A and the claw rear surface portion 22B. Further, when the movable cylinder portion 21 is pulled down from the upper position and a pressing force is applied from the front-rear direction to the contact portion between the temporary fixing protrusion 33 and the inner side surface portion of the engaging piece 35, the engaging pieces 35 are separated from each other. The temporary fixing protrusion 33 is released from the hooked state by elastically deforming in the front-rear and outward directions so as to do so. As a result, the same effect as that of the above-described embodiment is obtained.

In the above embodiment B, the temporary fixing protrusions 33 formed on the front surface portion 22A of the claw and the rear surface portion 22B of the claw are movable by engaging with the engaging piece 35 in the opposite outward directions in the front-rear direction from above. Although the tubular portion 21 is temporarily fixed and supported at a predetermined upper position, it is temporarily fixed to the claw front surface portion 22A and the claw rear surface portion 22B, respectively, inward facing each other in the front-rear direction as shown in the form C shown in FIG. The recess 36 is formed, and the convex portions 37 formed on the inner peripheral surface portions (inner peripheral front surface portion 32A and inner peripheral rear surface portion 32B) of the engaging piece 35 facing the concave portion 36 face each other in the front-rear direction. The movable cylinder portion 21 may be configured to be temporarily fixed and supported at a predetermined upper position by engaging inwardly.

In the above embodiment B, the claw engaging portion 32 is composed of two engaging pieces 35, and when the movable cylinder portion 21 is pulled down from the upper position, the engaging piece 35 elastically deforms outward, thereby engaging. Although the structure is described so that the temporary fixing protrusion 33 is released from the hooked state with respect to the unit 35, a long hole is provided on the root side (center side in the front-rear direction of the claw portion 22) of the temporary fixing protrusion 33. A gap may be provided by a notch or a notch, and the temporary fixing protrusion 33 may be elastically deformed inward so that the temporary fixing protrusion 33 is released from the hooked state with respect to the claw engaging portion 32. ..

In each of the above embodiments, the claw portions 22 and the guide plate 24 are provided on the left and right side surface portions 21C and 21D of the movable cylinder portion 21 so as to face each other. The claw portion 22 and the guide plate 24 may be provided so as to face each other (for example, the claw portion 22 is provided on the front surface portion of the movable cylinder portion 21, while the claw portion 22 is provided on the inner surface of the front wall 11A of the main body case 11. The joint portion 32 is provided, and the guide plate 24 is provided in the gap between the downstream end portion 201 of the main body cylinder portion 20 and the heat exchanger 15, or the claw portion 22 is provided on the rear surface portion of the movable cylinder portion 21. A claw engaging portion 32 is provided on the inner side wall of the gap between the downstream end portion 201 of the main body cylinder portion 20 and the heat exchanger 15, and a guide plate 24 is provided inside the front wall 11A of the main body case 11). In this case, the claw portion 22 and the claw engaging portion 32 provided at the front or rear facing position (inner side wall) of the claw portion 22 are elastically engaged in the left-right direction, so that the movable cylinder portion 21 moves in the left-right direction. Movement is restricted. Further, temporary fixing protrusions 33 are provided on the left and right side surface portions 21C and 21D of the claw portion 22, and the temporary fixing protrusions 33 engage with the claw engaging portion 32 in opposite outward directions in the left-right direction. Then, the movable cylinder portion 21 is hooked at the upper position. Further, the guide plate 24 comes into contact with the side surface portion of the movable cylinder portion 21 facing the side opposite to the arrangement surface portion of the claw portion 22, so that the movement of the movable cylinder portion 21 in the front-rear direction is restricted. As a result, the same effect as that of the above-described embodiment is obtained.

1 Bathroom heater 11 Main body case 110 Case opening 13 Blower 14 Circulation fan (air supply means)
19D case inner side wall (inner side wall of main body case)
20 Main body cylinder 201 Downstream end of main body cylinder (end on the case opening side)
21 Movable cylinder 21C Left side of the movable cylinder (one side surface of the movable cylinder)
22 Claw part (guidance part)
32 Claw engaging part (guidance receiving part)

Claims (2)

A box-shaped main body case with an open bottom that is arranged behind the ceiling of the bathroom, an air supply means that introduces the air in the bathroom into the main body case, and an air passage that guides the air introduced into the main body case into the bathroom. It is a bathroom heater equipped with
The air passage is connected to the main body cylinder portion extending from the arrangement portion of the air supply means toward the case opening on the lower surface of the main body case and the end portion of the main body cylinder portion on the case opening side so as to be movable up and down. It is composed of a movable cylinder that is installed and opens downward.
A guide portion provided on one side surface of the movable cylinder portion and supporting the movable cylinder portion so as to be movable downward from a predetermined upper position.
It is provided on the inner side wall of the main body case facing the one side surface portion, and has a guide receiving portion that engages and holds the guide portion so as to be slidable up and down.
When the opposite direction of the one side surface portion and the inner side wall is the left-right direction, and the direction orthogonal to the left-right direction and the up-down direction is the front-rear direction.
By elastically engaging at least one of the guide portion and the guide receiving portion with the other in the front-rear direction, the movement of the movable cylinder portion in the front-rear direction is restricted.
The information section
A pair of temporary fixing portions that engage with the guide receiving portion in opposite outward directions in the front-rear direction and hook the movable cylinder portion at the upper position at a position near the base end.
When the movable cylinder portion moves from the upper position hooked by the temporary fixing portion to the lower position at the upper end position, it engages with the guide receiving portion in the opposite outward directions in the front-rear direction, and is below the movable cylinder portion. A bathroom heater with a pair of retaining parts that restrict movement to. A box-shaped main body case with an open bottom that is arranged behind the ceiling of the bathroom, an air supply means that introduces the air in the bathroom into the main body case, and an air passage that guides the air introduced into the main body case into the bathroom. It is a bathroom heater equipped with
The air passage is connected to the main body cylinder portion extending from the arrangement portion of the air supply means toward the case opening on the lower surface of the main body case and the end portion of the main body cylinder portion on the case opening side so as to be movable up and down. It is composed of a movable cylinder that is installed and opens downward.
A guide portion provided on one side surface of the movable cylinder portion and supporting the movable cylinder portion so as to be movable downward from a predetermined upper position.
It is provided on the inner side wall of the main body case facing the one side surface portion, and has a guide receiving portion that engages and holds the guide portion so as to be slidable up and down.
When the opposite direction of the one side surface portion and the inner side wall is the left-right direction, and the direction orthogonal to the left-right direction and the up-down direction is the front-rear direction.
By elastically engaging at least one of the guide portion and the guide receiving portion with the other in the front-rear direction, the movement of the movable cylinder portion in the front-rear direction is restricted.
Inside the main body case, there is a guide plate that comes into contact with the other side surface of the movable cylinder that faces the side opposite to the one side surface, allows the movable cylinder to move in the vertical direction, and regulates the movement in the horizontal direction. Provided,
The guide plate is formed so as to extend downward from the upper part of one side surface portion of the main body cylinder portion so as to have a gap between the guide plate and the main body cylinder portion.
The other side surface portion of the movable cylinder portion is inserted from below into the gap formed between one side surface portion of the main body cylinder portion and the guide plate, and is sandwiched by one side surface portion of the main body cylinder portion and the guide plate. Bathroom heater.

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