JPH0731070Y2 - Swing-type outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a rocking cylinder composed of a fixed cylinder that is airtightly fixed to the peripheral portion of the blowout opening of an air conditioner, and a rotary cylinder that is rotatably fitted to the fixed cylinder. Regarding the dynamic outlet.

<Prior Art> Conventionally, as this type of swing-type air outlet, for example, one having a schematic structure as shown in FIG.
-211096). This swing-type outlet is composed of a fixed cylinder 32 having a collar portion 32a that is airtightly fixed to the peripheral edge of the blowout opening of an air conditioner (not shown), and a rotary cylinder 33 that is rotatably fitted to the fixed cylinder 32. An annular air seal spacer 34 made of synthetic resin having an L-shaped cross section is fitted in between (see FIG. 4 (b)),
The inside of the cylinder is kept airtight. Further, the conventional swing-type outlet shown in FIG. 5 has a rectangular cross section and an annular groove 44a on the lower surface at the periphery of the circular hole of the fixing plate 42 which has a circular hole 42a and is hermetically fixed to the air outlet. The annular air seal spacer 44 provided is adhered, and the rotary cylinder 43 is rotatably fitted on the air seal spacer 44 (see FIG. 5 (b)) to keep the inside of the cylinder airtight.

<Problems to be Solved by the Invention> However, the conventional swing-type air outlet described above includes the rotating cylinder 33 (fourth
(See FIG. 5B) is in surface contact over the entire outer surface of the air seal spacer 34 having an L-shaped cross section, or the rotary cylinder 43 (see FIG. 5B) is the upper surface of the air seal spacer 44 having a rectangular cross section. Since the entire surface is in surface contact, the frictional force becomes large, and there is a drawback that a large rotational torque is required to reciprocally swing the rotary cylinders 33 and 43 at a certain angle to swing the blown air. . Therefore, a large drive motor and a large swing mechanism are required, which not only requires a large amount of power for driving, but also the friction of the air seal spacers 34, 44 is large. When a bending force acts on the shafts 43 and 43, there is a problem that the frictional force becomes excessive and the rocking becomes impossible.

Therefore, an object of the present invention is to make the rotary cylinder linearly contact with the fixed cylinder via the air seal spacer, and to make the rotary cylinder support the linear contact while maintaining the linear contact even if bending force is applied to the rotary cylinder. An object of the present invention is to provide an oscillating air outlet capable of significantly reducing the rotational torque required for oscillating while maintaining airtightness in the cylinder, downsizing, and saving power.

<Means for Solving the Problems> In order to achieve the above object, the swing-type air outlet of the present invention has a peripheral edge portion of the air outlet 1a of the air conditioner 1 as illustrated in FIGS. 1 and 3. A fixed cylinder 2 that is airtightly fixed to the fixed cylinder 2 and a rotary cylinder 3 that has the same inner diameter as the fixed cylinder 2 and that is rotatably fitted to the fixed cylinder 2. While forming an L-shaped cross section into an annular notch to form an outer peripheral stepped portion 20, the inner periphery is formed at the base end of the rotary cylinder 3 by L
While forming an inner peripheral step portion 21 which is cut out in an annular shape with a letter cross section and is externally fitted to the outer peripheral step portion 20, between the outer peripheral step portion 20 and the inner peripheral step portion 21 facing cylindrical surfaces 20a, 21a. A cylindrical portion 23 fitted with a gap, an inner peripheral flange portion 24 continuous with one end of the cylindrical portion 23, and having an annular protrusion 24a having a semicircular cross section which is in contact with the tip end surface 20c of the fixed cylinder 2 on the lower surface; An outer peripheral collar portion 25 which is connected to the other end of the cylindrical portion 23 and is fitted into the outer peripheral step portion 20 and the inner peripheral step portion 21 with facing annular flat surfaces 20b, 21b with a gap therebetween.
The air seal spacer 22 composed of is fitted between the fixed cylinder 2 and the rotary cylinder 3, and the inner circumference of the air seal spacer 22 is pressed so that the annular protrusion 24a is pressed toward the tip surface 20c of the fixed cylinder 2. The collar portion 24 and the annular flat surface 21 inside the rotary cylinder 3
An annular seal material 26 made of a stretchable material is fitted between c and.

<Operation> The fixed cylinder 2 which is airtightly fixed to the peripheral edge portion of the blowout opening 1a of the air conditioner 1 has an outer peripheral step portion 20 having an L-shaped cross section at the tip, and an air seal spacer 22 is interposed in the outer peripheral step portion 20. Then, the rotary cylinder 3 is rotatably attached by externally fitting the inner peripheral step portion 21 of the L-shaped cross section at the base end. Cylindrical part 3 of the air seal spacer 22
And the outer peripheral collar portion 25 connected to the other end of the
While being fitted with a gap between the opposed cylindrical surfaces 20a, 21a of the inner peripheral stepped portion 21 and between the opposed annular flat surfaces 20b, 21b, the inner peripheral flange portion 24 connected to one end of the cylindrical portion 23 is a rotary cylinder. The upper surface is pressed by the annular flat surface 21c on the inner side of 3 through the annular sealing material 26 made of a stretchable material, and the annular projection 24a having a semicircular cross section on the lower surface is pressed against the distal end surface 20c of the fixed barrel 2 and the end surface 20c It is in line contact with the ring. Therefore, the entire inner peripheral flange portion 24 of the air seal spacer 22 or this and the cylindrical portion 23
Compared with the case where the whole is in contact with the outer peripheral stepped portion 20 of the fixed barrel 2 and the inner peripheral stepped portion 21 of the rotary barrel 3, the frictional force is reduced, and the rotational torque required for swinging the rotary barrel 3 is greatly reduced. Can be reduced to

On the other hand, when an excessive bending force acts on the rotary cylinder 3, the cylindrical portion 23 and the outer peripheral flange portion 24 of the air seal spacer 22 come into contact with the surroundings and can support the excessive bending force. Then, the line contact of the annular protrusion 24a is maintained.

<Embodiment> The present invention will be described in detail below with reference to an illustrated embodiment.

In FIG. 1, a fixed cylinder 2 having a flange portion 2a is airtightly fixed to a peripheral edge of a blowout opening 1a provided in a case 1 of a spot cooler, and a plurality of radial arms are provided on a peripheral wall 2b of the fixed cylinder 2. A small-diameter shaft 6 is projectingly provided on a boss portion 2d which is continuous via 2c with a flat washer 7 interposed therebetween. On the other hand, the rotary cylinder 3 airtightly connected to the elbow-shaped blow-out duct 5 through the flexible fitting joint 4 has a boss portion 3d connected to the peripheral wall 3b through a plurality of radial arms 3c, The boss portion 3d is rotatably fitted over the shaft 6 via a slide bearing 8, and nuts 10 are screwed onto both ends of the shaft 6 via a flat washer 7 and a spring washer 9, respectively. It is pressed against the flat washer 7 of the boss portion 2d of the fixed cylinder with an appropriate force so as not to move in the axial direction.

In addition, one arm 3c of the rotary cylinder 3 has a groove 11 in the longitudinal direction.
And a through slot 12 are provided, and the through slot 12 has a protrusion 13a on the lower surface.
Through which the block 13 is slidably fitted in the groove 11, the block 13 is moved in the longitudinal direction by the rod 14 protruding from the outer circumference of the cylinder, and the block 13 is attached to the inner end 12a or the outer end 12b of the through slot 12. The position is fixed selectively. Then, the tip of the lever 16 fixed at a right angle to the output shaft 15a of the motor 15 protruding into the fixed barrel 2 and the block 13 are connected by a connecting rod 19 via hinges 17 and 18, thereby forming a lever crank mechanism. Then, the turning motion of the lever 16 is converted into the reciprocating angular motion of the arm 3c, and the rotary cylinder 3 is moved to 70 ° at the inner end position 12a of the block 13 described above.
It swings at an angle of 50 ° at the outer end position 12b.

An outer peripheral step portion 20 is formed by cutting the outer periphery into an annular shape with an L-shaped cross section at the tip 12 of the fixed cylinder 2, and an inner peripheral surface of the rotary cylinder 3 has an L-shaped cross section. Cut out in a ring,
An inner peripheral step portion 21 that is fitted onto the outer peripheral step portion 20 is formed, and an annular air seal spacer 22 made of polyacetal resin having a Z-shaped cross section is formed in the gap between the both step portions 20, 21. An annular seal material 26 made of a stretchable material such as foamed synthetic rubber (for example, ethylene propylene diene copolymer) is fitted.

2 and 3 are an exploded perspective view and a detailed sectional view, respectively, showing a fitting portion of the fixed barrel 2 and the rotary barrel 3 which is a main part of the present invention.
As described above, the rotary cylinder 3 is rotatably fitted on the fixed cylinder 2 via the air seal spacer 22 and the annular seal material 26. The air seal spacer 22 is shown in FIG.
As shown in (b), the outer peripheral step portion 20 of the fixed cylinder 2 and the rotary cylinder 3
Of the inner peripheral stepped portion 21 of the cylindrical surface 20a, the cylindrical portion 23 to be fitted with a gap between the cylindrical surface 20a, and the upper end of the cylindrical portion 23,
An inner peripheral flange portion 24 having an annular protrusion 24a having a semicircular cross section, which is in contact with the front end surface 20c of the fixed cylinder 2, on the lower surface, and a lower end of the cylindrical portion 23. The outer peripheral step portion 20 and the inner peripheral step portion 21 face each other. The outer peripheral flange portion 25 is fitted between the annular flat surfaces 20b and 21b with a gap. On the other hand, as shown in FIG. 3 (a), the annular seal member 26 has an inner peripheral flange portion of the air seal spacer 22.
The inner peripheral flange portion 2 is provided between the ring 24 and the annular flat surface 21c inside the rotary cylinder 3.
The annular projection 24a on the lower surface of 4 is fitted so as to be pressed toward the tip surface 20c of the fixed cylinder 3. The outer edge of the base end of the rotary cylinder 3 extends so as to cover the outer periphery of the fixed cylinder 2 to further maintain the airtightness inside the cylinder.

The swing-type outlet having the above structure operates as follows.

As shown in FIG. 3 (a), the fixed cylinder 2 which is airtightly fixed to the peripheral portion of the case 1 of the spot cooler has an outer peripheral step portion 20 having an L-shaped cross section at the tip thereof. An inner peripheral step portion 21 having an L-shaped cross section at the base end is provided via an air seal spacer 22 made of polyacetal resin and an annular seal material 26 made of foam synthetic rubber.
And the rotary cylinder 3 is rotatably attached. The cylindrical portion 23 of the air seal spacer 2 and the outer peripheral flange portion 25 connected to the lower end of the cylindrical portion 23 are respectively the outer peripheral step portion 20 and the inner peripheral step portion 21.
Between the cylindrical surfaces 20a, 21a facing each other and the annular flat surface 20 facing each other
While being fitted with a gap between b and 21b, the inner peripheral flange portion 24 continuing to the upper end of the cylindrical portion 23 is an annular flat surface 21c inside the rotary cylinder 3.
The upper surface is pressed by the annular sealing member 26, and the lower surface annular protrusion 24a is pressed against the front end surface 20c of the fixed cylinder 2 and is in line contact with the front end surface 20c in an annular shape.

Therefore, the rotary cylinder 3 described in FIGS. 4 (b) and 5 (b)
Compared with the conventional example in which 3,43 are in contact with the entire outer side surface of the air seal spacer 34 or the entire upper side surface of the air seal spacer 44, the frictional force is significantly reduced, and the rotational torque required to swing the rotary cylinder 3 is reduced. Can be significantly reduced, and since the air seal spacer 22 is made of polyacetal resin, smooth swing can be obtained. In addition, the reduction of the rotating torque enables the lever crank mechanism such as the motor 15 and the connecting rod 19 to be downsized, and the power required for swinging can be reduced.

On the other hand, an arrow A (see FIG. 3 (a)) appears on the rotary cylinder 3 during swinging.
When a bending force as shown in (4) is applied, the annular sealing material 26 made of foamed synthetic rubber is flexibly deformed, and the air seal spacer 22 having the Z-shaped cross section is appropriately deformed in the space around it. While the airtightness is maintained, the line contact of the annular projection 24a with the tip surface 20c of the fixed cylinder is maintained, and the frictional force that hinders the swinging does not increase. Further, when an excessive bending force is applied to the rotary cylinder 3, the gap around the air seal spacer 22 is closed, and the fixed cylinder 2 can support the excessive bending force.

In the above embodiment, since the central boss portion 3d of the rotary cylinder 3 is rotatably and immovably supported in the axial direction on the shaft 6 projecting from the central boss portion 2d of the fixed cylinder 2, The fitting gap between the outer peripheral step portion 20 and the inner peripheral step portion 21 of the rotary cylinder 3 can be accurately maintained, the rotary cylinder 3 can be smoothly swung, and the hinge 18 at one end is movable in the radial direction. There is an advantage that the swing angle can be switched between two stages by the lever crank mechanism using the connecting rod 19.

Needless to say, the present invention is not limited to the illustrated embodiment.

<Effect of the Invention> As is clear from the above description, the swing-type outlet of the present invention has an L-shaped cross section at the tip of the fixed cylinder that is airtightly fixed to the peripheral edge of the outlet of the air conditioner. An inner peripheral step portion having an L-shaped cross section, which is formed at the base end of the rotary cylinder, forms an annular outer peripheral step portion, and is freely rotatable to the outer peripheral step portion via an air seal spacer and an annular seal material made of a stretchable material. The outer peripheral flange portion connected to the cylindrical portion of the air seal spacer and the other end of the air seal spacer is provided between the annular flat surfaces facing the cylindrical surfaces of the outer peripheral step portion and the inner peripheral step portion facing each other. Fit,
An annular projection having a semicircular cross section provided on the lower surface of the inner peripheral flange portion connected to one end of the cylindrical portion is pressed toward the tip end surface of the fixed cylinder by the annular flat surface inside the rotary cylinder via the annular seal material. Therefore, the rotary cylinder and the fixed cylinder make line contact with each other via the annular projection, the frictional force is reduced, and the rotational torque required for swinging the rotary cylinder can be greatly reduced. The dynamic mechanism can be downsized, and even if a bending force is applied to the rotating cylinder, it is possible to suppress the increase in frictional force while maintaining the airtightness inside the cylinder, and to support if an excessive bending force is applied. .

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the swinging air outlet of the present invention, FIG. 2 is an exploded perspective view showing a fitting state of the fixed barrel and the rotary barrel of FIG. 1, and FIG. FIG. 1 is a detailed cross-sectional view of the fitting portion of the fixed cylinder and the rotary cylinder, and FIGS. 4 and 5 are an exploded perspective view and a detailed cross-sectional view showing a schematic configuration of a conventional swing-type air outlet. 1 ... Case, 1a ... Blowout opening, 2 ... Fixed cylinder, 3 ...
Rotating cylinder, 20 ... Outer peripheral step, 21 ... Inner peripheral step, 22 ... Air seal spacer, 23 ... Cylindrical section, 24 ... Inner peripheral flange section, 25 ...
… Outer collar part, 26 …… annular sealing material.

Claims (1)

[Scope of utility model registration request] 1. A fixed cylinder (2) which is airtightly fixed to a peripheral portion of an outlet (1a) of an air conditioner (1), and a fixed cylinder (2) having the same inner diameter as the fixed cylinder (2). In a swing-type air outlet consisting of a rotary cylinder (3) rotatably fitted in 2), the outer periphery of the fixed cylinder (2) is cut into an annular shape with an L-shaped cross section, and the outer peripheral step ( On the other hand, the inner peripheral stepped portion (21) is formed at the base end of the rotary cylinder (3) so as to have an L-shaped cross section, and is notched in an annular shape to be externally fitted to the outer peripheral stepped portion (20).
And a cylindrical portion (23) which is fitted with a gap between the outer peripheral stepped portion (20) and the inner peripheral stepped portion (21) facing each other (20a, 21a). Of the inner peripheral flange portion (24) having an annular projection (24a) having a semicircular cross section, which is continuous with one end of the above), and which is in contact with the tip surface (20c) of the fixed cylinder (2), and the cylindrical portion (23). An annular flat surface (20b, 20b, which is continuous with the other end and faces the outer peripheral step (20) and the inner peripheral step (21).
An air seal spacer (22) consisting of an outer peripheral flange portion (25) which is fitted with a gap between 21b) is fitted between the fixed cylinder (2) and the rotary cylinder (3), and the annular projection (24a) is fitted. ) Toward the tip surface (20c) of the fixed tube (2),
An annular seal material (26) made of a stretchable material is fitted between the inner peripheral flange portion (24) of the air seal spacer (22) and the annular flat surface (21c) inside the rotary cylinder (3). Characteristic rocking type outlet.