JP2017096560A - Louver of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost louver which has a heat insulation space.SOLUTION: A direction along a long side of a rectangle, a direction along a short side, and a direction crossing an XY plane are defined as an X direction, a Y direction, and a Z direction, respectively. An inner member has a rib P which extends to the outside at a Y direction end and presses an inner peripheral surface of a wall 5 and a rib Q which projects in the Z direction in the vicinity of the Y direction end and presses a bottom section 4 in a fitted state with an outer member. The outer member has a rib R for preventing the rib P from being away from the bottom section 4 in the Z direction and a rib M for preventing the rib Q from being away from the wall 5 in the Y direction. A spacer which is made of a material having a lower friction efficient than the outer member and the inner member or a layer of lubricant is provided between the rib P and the wall 5 and/or the rib R, and the rib Q and the bottom 4 and/or the rib M.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a louver that regulates the direction of wind blown from a blowout port in an air conditioner.

  In the louver, in order to prevent condensation on the surface not exposed to the cold air, a device for insulating the surface exposed to the cold air from the surface not exposed to the air is required. A heat insulating means that has become widespread in recent years is one in which the louver is made of resin and has a hollow structure. In other words, the louver is made of a combination of a resin front plate or outer plate and a back plate or inner plate, and a heat insulating space is formed by these two plates to be bonded together. The heat conduction between the face plate (inner plate) and the surface plate (outer plate) that does not contact is cut off in the heat insulating space (Patent Document 1).

  Then, in order to bond the inner plate and the outer plate, a method is adopted in which a wall is raised on the periphery of the outer plate, the inner plate is fitted inside the wall, and the fitting portion is sealed with resin (for example, Patent Document 2). Is widely used.

Japanese Patent No. 373299 JP 2014-70745 A

However, since the peripheral portions of the two plates are narrow and long, it is difficult to directly bond them as in Patent Document 1, and the productivity is low. Moreover, in order to seal a fitting part with resin like patent document 2, in addition to the metal mold | die and molding machine which shape | mold two sheets, a metal mold | die and a molding machine for sealing are required, and a metal mold | die is used. Since the product cannot be taken out until the temperature of the product drops to near room temperature, a large cost is required.
Therefore, an object of the present invention is to provide a louver having a heat insulating space inside at a low cost.

In order to solve the problem, the louver of the present invention is
An outer member having a substantially rectangular shape in plan view and having a wall at the periphery of the bottom portion, and an inner member having a top portion fitted to the inner peripheral surface of the wall and forming a heat insulating space with the outer member.
And when the direction along the long side of the rectangle is the X direction, the direction along the short side is the Y direction, and the direction crossing the XY plane is the Z direction,
The inner member is in a fitted state with the outer member, and protrudes in the Z direction near the end in the Y direction, and a rib P that projects outward at the end in the Y direction and presses the inner peripheral surface of the wall. Having a rib Q to press the bottom,
The outer member has a step T that prevents the rib P from moving away from the bottom in the Z direction, and a step L that prevents the rib Q from moving away from the wall in the Y direction,
A spacer made of a material having a lower coefficient of friction than the outer member and the inner member, or a lubricant, between the rib P and the wall and / or step T and between the rib Q and the bottom and / or step L. A layer is provided.

According to the louver of the present invention, the inner member and the outer member are fixed by simply laying and fixing the outer member and fitting the inner member in order from the end. The time required for fixing is short, and no specially expensive machine is required.
Since the rib P presses the inner peripheral surface of the wall in the fitted state between the inner member and the outer member, the rib tends to shift in the Y direction due to a reaction force from the wall. The shift of Q in the same direction is prevented by the step L. For this reason, the inner member does not move to either side in the Y direction.
Further, since the rib Q presses the bottom portion, the inner member tends to lift in the Z direction due to the reaction force from the bottom portion, but the shift in the same direction of the rib P is prevented by the step T. . For this reason, the inner member does not float.

  In this way, the reaction force received by the rib P from the wall and the reaction force received by the rib Q from the step L are in tension, and the reaction force received by the rib Q from the bottom and the reaction force received by the rib P from the step T are thrust. Matching. Accordingly, a considerable frictional force acts between the rib P and the wall and the step T and between the rib Q and the bottom and the step L in the relative movement in the X direction. On the other hand, an external force for twisting the louver may be unexpectedly applied to the louver during transportation after assembly or during use after being attached to an air conditioner. Once the louver is twisted, it does not return naturally due to the frictional force.

  Therefore, the spacer or lubricant layer is provided to reduce the frictional force. Thereby, even if the louver is twisted, the elastic restoring force of the outer member and the inner member overcomes the frictional force and returns naturally. The low friction material is preferably one or more selected from polyacetal, polyamide and polytetrafluoroethylene. The lubricant is preferably a quick-drying lubricant.

  A preferable combination of the rib P and the step T is that the rib P protrudes outward at a position where the rib P is lowered toward the bottom by the thickness of the top at the Y direction end, and the inner peripheral surface of the wall is rib The rib R protrudes inward so as to overlap the upper surface of P, and the rib R functions as a step T. With such a structure, after the inner member is fitted into the outer member, the rib R not only prevents the rib P from shifting in the direction away from the bottom, but also when the fitting is fitted, the wall of the outer member and the vicinity thereof The rib P gets over the rib R by being bent outward in the Y direction, that is, elastically deformed, and the rib P fits under the rib R by the restoring force, and the tip of the rib P presses the inner peripheral surface of the wall.

  Further, in a preferable combination of the rib Q and the step L, the outer member has a rib M protruding from the bottom at a position shifted inward in the Y direction by the thickness of the rib Q, and the rib M functions as the step L. Is. In such a structure, after the inner member is fitted into the outer member, the rib Q not only prevents the rib Q from shifting in the Y direction away from the wall, but also when the rib Q is fitted, This is because the inner member is fitted into the outer member at the accurate Y-direction position guided by the rib M. The protruding dimension of the rib M is desirably designed so that the rib M contacts the rib Q before the rib P contacts the wall when the inner member is fitted to the outer member.

  The ribs P and the ribs Q may be provided intermittently in the X direction, or may be provided over the entire length of the louver in the X direction. Preferably, the ribs P are provided intermittently in the X direction, the ribs Q are provided at least in the X direction positions corresponding to the ribs P, and the total length of the ribs Q in the X direction is greater than the total length of the ribs P in the X direction. Is also big.

  In the case where the rib P is provided intermittently and only the spacer is provided among the spacer and the lubricant layer, even if the rib Q is provided over the entire length of the louver in the X direction, the rib Q and the bottom portion and Between the step L and / or the step L, a spacer may be provided only at a position corresponding to the rib P or in the vicinity thereof. This is because the spacer has a thickness, and the rib Q at the position where the spacer is not provided is not in contact with the bottom and / or the step L.

  The spacer provided between the rib P and the wall and / or the step T is preferably fitted with the rib P. This is because the spacer is prevented from being displaced when the inner member is fitted to the outer member by fitting the spacer to the rib P before the inner member is fitted to the outer member. For the same reason, it is preferable that the spacer provided between the rib Q and the bottom and / or the step L is also fitted with the rib M.

  As described above, the louver of the present invention lays and fixes the outer member, and the inner member and the outer member can be fixed simply by fitting the inner member in order from the end. There is no need for expensive machines. Therefore, according to this invention, the louver which has a heat insulation space inside can be obtained at low cost.

The louver of Embodiment 1 is shown, (a) is the top view, (b) is AA sectional drawing of (a). It is a perspective view of the outer member applied to the louver. (A) is a top view of the outer member, and (b) is an AA sectional view of (a). It is a perspective view of the inner member applied to the louver. (A) is a bottom view of the inner member, and (b) is an AA sectional view of (a). It is the B section enlarged view in FIG. It is the C section enlarged view in FIG. The louver of Embodiment 2 is shown, (a) is the top view, (b) is AA sectional drawing of (a). It is a perspective view of the outer member applied to the louver. (A) is a top view of the outer member, and (b) is an AA sectional view of (a). It is a perspective view of the inner member applied to the louver. (A) is a bottom view of the inner member, and (b) is an AA sectional view of (a). It is the B section enlarged view in FIG. The louver of Embodiment 3 is shown, (a) is the top view, (b) is AA sectional drawing of (a). It is a perspective view of the outer member applied to the louver. (A) is a top view of the outer member, and (b) is an AA sectional view of (a). It is a perspective view of the inner member applied to the louver. (A) is a bottom view of the inner member, and (b) is an AA sectional view of (a). It is the B section enlarged view in FIG. It is the B section enlarged view in FIG. The modification of the louver of Embodiment 3 is shown, (a) is the top view, (b) is AA sectional drawing of (a). It is BB sectional drawing in FIG. 21, and each part enlarged view.

Embodiment 1
A first embodiment of the present invention will be described with reference to the drawings.
The louver 1 is attached to a blowout port of the air conditioner via a rotation shaft (not shown), and functions to close the blowout port when the air conditioner is not in operation, and rotates around the rotation shaft during operation. The air outlet is opened, and the direction of the wind blown from the air outlet is regulated by the opening angle.

  As shown in FIG. 1, the louver 1 is composed of an outer member 2 and an inner member 3 made of resin such as ABS and PS, both of which are substantially rectangular in a plan view, and are located at both ends in the longitudinal direction among the four corners. Two adjacent corners have a shape cut out by two sides parallel to the long side and the short side, and the bearing of the rotating shaft is disposed in the cut portion. Hereinafter, for convenience of explanation, the direction along the long side of the rectangle is the X direction, the direction along the short side is the Y direction, and the direction intersecting the XY plane is the Z direction.

  As shown in FIGS. 1 to 3, the external member 2 has a bottom 4 and a wall 5 on the periphery of the bottom 4. The bottom 4 has a curved shape with a small curvature like a bow when viewed from the side. The wall 5 has an angle with respect to the bottom portion 4 or has a gradient that gradually increases while continuing from the bottom portion 4, but is inclined so as to open outward rather than parallel to the Z direction in a side view. As shown in FIGS. 1 and 4 to 5, the inner member 3 has a top portion 6 that is curved so as to substantially follow the bottom portion 4. The top portion 6 is fitted to the inner peripheral surface of the wall 5. In this fitted state, the outer member 2 and the inner member 3 form a heat insulating space surrounded by the bottom portion 4, the wall 5 and the top portion 6. In the fitted state, the opening end surface of the outer member 2, that is, the upper end surface of the wall 5 is flush with the upper surface of the top portion 6.

  As shown in FIGS. 4 to 7, the inner member 3 includes a rib P that protrudes outward at a position lowered toward the bottom 4 by the thickness of the top 6 at the end in the Y direction, and a top 6 near the end in the Y direction. And a rib 7 protruding in the Z direction from the top 6 on the inner side in the Y direction than the rib Q. The ribs P are provided intermittently at equal intervals in the X direction, and the ribs Q are provided along the entire circumferential length of the inner member 3 in the X direction. However, the rib Q protrudes larger in the Z direction than the other positions at a position corresponding to the rib P. Two ribs 7 are provided in parallel over the entire length in the X direction excluding the cut-out portion where the bearing is disposed.

  The protruding dimension of the rib Q at a position corresponding to the rib P is slightly larger than the distance between the upper surface of the bottom part 4 and the lower surface of the top part 6 in the fitted state, and that of the rib 7 is equal to the same distance. A quick-drying lubricant layer G is formed on the tip surface of the rib P and the inner surface of the rib Q. The lubricant of the layer G is a mixture of powder and liquid, which is applied immediately before the assembly stage of the louver 1 and is quickly dried after application to leave only the powder. Examples of such a lubricant include MOLYKOTE (registered trademark) / PD-930 manufactured by Toray Dow Corning Co., Ltd., and HANARL (registered trademark) manufactured by Kanto Kasei Corporation.

  As shown in FIGS. 2 to 3 and FIGS. 6 to 7, the outer member 2 includes a rib R protruding inward so as to overlap the upper surface of the rib P at the upper end of the inner peripheral surface of the wall 5, and the thickness of the rib P more than the rib R. The rib 8 protrudes in the same direction as the rib R at the position lowered by the thickness, and the rib M protrudes from the bottom 4 at the position shifted inward in the Y direction by the thickness of the rib Q. The ribs 8 are triangular in a side view and are provided intermittently in the X direction. The ribs M are provided along the entire circumferential length of the outer member 2 in the X direction. A lubricant layer G is also formed on the inner peripheral surface of the wall 5 and the outer surface of the rib M.

  When the louver 1 is assembled, the outer member 2 is laid and fixed, the inner member 3 is placed thereon, and the position of the inner member 3 in the XY direction with respect to the outer member 2 is adjusted. The lower end of the rib Q contacts the upper end of the rib M. Then, the inner member 3 is pushed.

  Then, the inner member 3 descends while the rib Q is guided along the outer surface of the rib M, that is, along the surface on the wall 5 side. Since the rib Q is guided by the rib M, the position in the Y direction is accurately determined. When the rib P reaches the upper end surface of the wall 5, a stronger force is applied to the inner member 3 in order from the end in the X direction. When the wall 5 and the bottom part 4 are bent outward in the Y direction, the rib P is lowered along the inner peripheral surface of the rib R. Subsequently, the rib P fits under the rib R by the restoring force and presses the inner peripheral surface of the wall 5. At substantially the same time, the rib Q and the rib 7 press the bottom portion 4.

  Even when the inner member 3 is pushed from above with a strong force at the time of fitting, the rib P is supported by the rib 8, so that the inner member 3 does not sink downward, and it is not necessary to use much nerve at the time of pushing. In this way, the inner member 3 and the outer member 2 are completely fixed. The time required for fixing is short, and no specially expensive machine is required.

  In the louver 1, when the inner member 3 and the outer member 2 are fitted, the rib P presses the inner peripheral surface of the wall 5, so that the inner member 3 is shifted in the Y direction by receiving a reaction force from the wall 5. However, the rib M is prevented from shifting in the same direction of the rib Q. For this reason, the inner member 3 does not move to either side in the Y direction. In addition, since the rib Q presses the bottom portion 4, the inner member 3 tends to lift in the Z direction due to the reaction force from the bottom portion 4, but the shift of the rib P in the same direction is prevented by the rib R. Yes. For this reason, the inner member 3 does not float up. Moreover, since the bottom portion 4 is curved, the rib Q does not shift in the Y direction approaching the wall 5 even if an external force is applied to the louver 1.

  Furthermore, even if pressure is applied to the Y direction intermediate portion of the louver 1, the rib 7 presses the bottom portion 4, so that the top portion 6 does not bend. Regarding the X direction, since the lubricant layer G exists at the place where the strongest frictional force is exerted between the outer member 2 and the inner member 3, the long side of the outer member 2 and the long side of the inner member 3 are in the X direction. Even if it is relatively moved, it can be easily restored.

  As described above, the louver 1 not only forms a heat insulating space in the interior between the outer member 2 and the inner member 3, but also adheres to the outer member 2 and the inner member 3 even when an unexpected external force is applied. It is kept firmly. The rib Q at a position not corresponding to the rib P is not in contact with the rib M, but supplements the strength of the entire rib Q.

Embodiment 2
A second embodiment of the present invention will be described with reference to the drawings. Also in this embodiment, the louver 11 includes the outer member 12 and the inner member 13 as shown in FIGS. However, the outer member 12 and the inner member 13 have grooved ribs 22 and 32 in addition to the configuration of the first embodiment. Since other parts are substantially the same as those in the first embodiment, the same reference numerals as those in the first embodiment are used to substitute for the description.

  As shown in FIGS. 9 to 10 and 13, the grooved ribs 22 are provided at several positions along each corner and the X direction peripheral edge of the outer member 12, and face the wall 5 and are parallel to the XZ plane 22 a and YZ. It consists of the part 22b parallel to a surface. The dimension in the X direction of the portion 22a is substantially equal to the dimension in the Y direction of the portion 22b. Each of these portions has a Z-direction dimension that is slightly smaller than the distance between the bottom portion 4 and the top portion 6. Then, a groove 22c having a depth of about ½ of the length from the upper end to the bottom 4 is formed in the portion 22b.

  As shown in FIGS. 11 to 12 and 13, the grooved rib 32 is provided on the inner member 13 corresponding to the grooved rib 22, and faces the wall 5 on the portion 32 a parallel to the XZ plane and the YZ plane. It consists of the parallel part 32b. The X direction dimension of the part 32a is larger than the X direction dimension of the part 22a, and the Y direction dimension of the part 32b is smaller than the Y direction dimension of the part 22b. Each of these portions has a Z-direction dimension that is slightly smaller than the distance between the bottom portion 4 and the top portion 6. And the groove | channel 32c of the depth of about 1/2 of the length from the upper end to the top part 6 is formed in the position corresponding to the groove | channel 22c in the part 32a.

  In the louver 11, when the outer member 12 and the inner member 13 are fitted, the portion 22 b of the rib 22 and the portion 32 a of the rib 32 are engaged with each other at the positions of the grooves 22 c and 32 c, so that the external force is excessively large. As long as is not added, the long side of the outer member 12 and the long side of the inner member 13 do not move relative to each other in the X direction. Even if the long side of the outer member 12 and the long side of the inner member 13 are moved relative to each other in the X direction, the lubricant layer G is applied to a place where the strongest frictional force acts between the outer member 12 and the inner member 13. Therefore, the elastic restoring force of the portion 22b overcomes the X-direction frictional force between the outer member 12 and the inner member 13, and returns naturally. For this reason, even if some external force is applied to the louver 11, the louver 11 does not remain twisted indefinitely.

  As described above, the louver 11 not only forms a heat insulating space in the inside by the outer member 12 and the inner member 13, but also adheres between the outer member 12 and the inner member 13 even when an unexpected external force is applied. It is kept firmly.

Embodiment 3
A third embodiment of the present invention will be described with reference to the drawings. Also in this embodiment, the louver 101 includes an outer member 102 and an inner member 103 as shown in FIGS. 14 to 18 as in the first and second embodiments. As in the second embodiment, the outer member 102 and the inner member 103 have grooved ribs 42 and 52.

  However, unlike the first and second embodiments, as shown in FIG. 19, the rib P does not directly press the wall 5, but presses it through the spacer S1. In addition, a spacer S2 is interposed between the rib Q and the rib M and at a position in the X direction corresponding to the rib P. At the position in the X direction where the spacer S2 is not interposed, the rib Q and the rib M are opposed to each other through a gap. The spacers S1 and S2 are made of polyacetal. Since other parts are substantially the same as those in the first embodiment, the same reference numerals as those in the first embodiment are used to substitute for the description.

  The spacer S1 has a shape that follows all the surfaces of the rib P except for both end surfaces in the X direction. Further, the spacer S <b> 2 has a U shape in the X direction so as to cover the rib M, and has an X direction dimension substantially the same as the X direction dimension of the rib P. As shown in FIG. 20, the spacer S1 is put on the rib P, and the spacer S2 is put on the rib M as shown in FIGS. 15 to 16, and in this state, the outer member 102 and the inner member 103 are covered. And the louver 101 is assembled. Therefore, the positions of the spacers S1 and S2 do not shift when the outer member 102 and the inner member 103 are fitted.

  In the louver 101, when the outer member 102 and the inner member 103 are fitted, the portion 42b of the rib 42 and the portion 52a of the rib 52 mesh with each other at the positions of the grooves 52c and 52c, so that the external force is too large. As long as is not added, the long side of the outer member 102 and the long side of the inner member 103 do not move relative to each other in the X direction. Even if the long side of the outer member 102 and the long side of the inner member 103 move relative to each other in the X direction, a low friction called polyacetal is provided at the place where the strongest frictional force acts between the outer member 102 and the inner member 103. Since the spacers S1 and S2 made of the coefficient material exist, the elastic restoring force of the portion 42b overcomes the X-direction frictional force between the outer member 12 and the inner member 13, and returns naturally. For this reason, even if some external force is applied to the louver 101, the louver 101 does not remain twisted indefinitely.

  As described above, the louver 101 not only forms a heat insulating space in the interior between the outer member 102 and the inner member 103, but also adheres between the outer member 102 and the inner member 103 even when an unexpected external force is applied. It is kept firmly.

  The spacer S1 need not be provided over the entire length of the rib P in the X direction, and may be provided only at both ends of the rib P in the X direction or intermittently as shown in FIGS. . Similarly, the spacer S2 may be provided only in a portion corresponding to the vicinity of the midpoint in the X direction of the rib P or only in a portion corresponding to the vicinity of both ends of the rib P in the X direction.

1, 11, 101 Louver 2, 12, 102 External material 3, 13, 103 Inner member 4 Bottom 5 Wall 6 Top

Claims (9)

An outer member having a substantially rectangular shape in plan view and having a wall at the periphery of the bottom;
It has a top portion that fits to the inner peripheral surface of the wall, and includes an inner member that forms a heat insulating space with the outer member,
A louver that regulates the direction of wind blown from a blowout port in an air conditioner,
When the direction along the long side of the rectangle is the X direction, the direction along the short side is the Y direction, and the direction intersecting the XY plane is the Z direction,
The inner member is in a fitted state with the outer member, and protrudes in the Z direction near the end in the Y direction, and a rib P that projects outward at the end in the Y direction and presses the inner peripheral surface of the wall. Having a rib Q to press the bottom,
The outer member has a step T that prevents the rib P from moving away from the bottom in the Z direction, and a step L that prevents the rib Q from moving away from the wall in the Y direction,
A spacer made of a material having a lower coefficient of friction than the outer member and the inner member, or a lubricant, between the rib P and the wall and / or step T and between the rib Q and the bottom and / or step L. A louver characterized in that a layer is provided.   The rib P protrudes outward at a position where the rib P is lowered toward the bottom by the thickness of the top at the Y-direction end, and the rib protrudes inward so that the inner peripheral surface of the wall overlaps the upper surface of the rib P The louver according to claim 1, wherein the louver has R and the rib R functions as a step T.   The louver according to claim 1 or 2, wherein the outer member has a rib M protruding from the bottom at a position shifted inward in the Y direction by the thickness of the rib Q, and the rib M functions as a step L.   4. The louver according to claim 3, wherein the rib Q and the rib M are in contact with the rib P before the wall is in contact with the outer member when the inner member is fitted to the outer member.   The rib P is intermittently provided in the X direction, the rib Q is provided at least in the X direction position corresponding to the rib P, and the total length in the X direction of the rib Q is larger than the total length in the X direction of the rib P. Item 5. The louver according to any one of Items 1 to 4.   The louver according to any one of claims 1 to 5, wherein the low friction material is one or more selected from polyacetal, polyamide, and polytetrafluoroethylene.   The louver according to any one of claims 1 to 6, wherein a spacer provided between the rib P and the wall and / or the step T is fitted with the rib P.   The louver according to claim 3, wherein a spacer provided between the rib Q and the bottom and / or the step L is fitted with the rib M. 5.   The louver according to claim 1, wherein the lubricant is a quick-drying lubricant.

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