Wind direction adjustment device

Abstract

To provide a wind direction adjustment device improved in airtightness of blockage of a wind channel caused by overlapping of adjacent louvers.SOLUTION: A wind direction adjustment device 1 comprises: a plurality of louvers 10 that are adjacently arranged so that rotation axes A can be parallel to each other; and a link 15 that rotates the louvers 10 interlockingly with each other. One of the adjacent louvers 10 and 10 sequentially overlaps the other to enable blocking of a wind channel 3. One of the adjacent louvers 10 and 10 is disposed so that at least a part thereof can cross over the rotation axis A at a prescribed rotation position with respect to the other. A shaft 19 is formed in one of the louver 10 and the link 15. A hole 18 into which the shaft 19 is inserted is formed in the other of the louver 10 and the link 15. In the hole 18, a first hole 18a and a second hole 18b having an opening larger than that of the first hole 18a are set.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an airflow direction adjusting device capable of closing off an air passage by sequentially overlapping adjacent louvers at predetermined rotation positions. [Background technology]

[0002] Conventionally, air conditioners used in vehicles such as automobiles include air direction adjustment devices that adjust the direction of air blown out. Air direction adjustment devices are also called air conditioner air blowing devices, air outlets, ventilators, registers, etc., and are installed in various parts of the vehicle, such as the instrument panel or center console, and contribute to improving comfort performance through heating and cooling.

[0003] Among such air direction adjustment devices, there is known a device that has a so-called louver shut function in which adjacent louvers overlap each other to block conditioned air. In this case, if the structure is such that one end of adjacent louvers simply abuts against the other end, there is a risk that the abutment of the louvers will be insufficient and gaps will be generated due to dimensional errors of the louvers or changes in the dimensions of the louvers caused by temperature changes after assembly. For this reason, a configuration is known in which the distance between holes formed in the links that link the louvers together is set to be larger than the distance between the rotation axis set in the louvers and the link axis inserted into the hole in the link (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-34734 A (pages 4-6, Figures 1-4) Summary of the Invention [Problem to be solved by the invention]

[0005] In the case of the above-mentioned air direction adjustment device, some of the louvers are configured to abut against the case body in order to regulate the rotation angle of the louvers, so further configuration is required to prevent gaps from occurring between all of the louvers when the louvers abut against the case body at a position before they abut against each other due to dimensional errors, etc.

[0006] The present invention has been made in consideration of the above-mentioned points, and has an object to provide an air direction adjusting device that improves airtightness to prevent blockage of the air passage due to overlapping of adjacent louvers. [Means for solving the problem]

[0007] The airflow direction adjustment device according to claim 1 comprises a plurality of louvers arranged adjacent to each other with their rotation axes parallel to each other, and a link that rotates the louvers in conjunction with each other, and is capable of closing off an air passage by one of the adjacent louvers overlapping the other in a predetermined rotation position, and one of the adjacent louvers is arranged such that at least a portion of it exceeds the rotation axis at the predetermined rotation position relative to the other, and a shaft portion is formed on one of the louvers and the link, and a hole portion into which the shaft portion is inserted is formed on the other of the louvers and the link, and the hole portion is set to have a first hole portion and a second hole portion having an opening larger than that of the first hole portion. The shaft portion is set to a first shaft portion that is inserted into the first hole portion and a second shaft portion that is inserted into the second hole portion, and the second hole portion has a clearance with respect to the second shaft portion in a rotation direction of the louver, so that the louver corresponding to the second hole portion can be rotated so as to approach the adjacent louver by the movement of the second shaft portion within the second hole portion. It is something.

[0008] The airflow direction adjustment device according to claim 2 is the airflow direction adjustment device according to claim 1, The first shaft portion is The under-shaped hole is inserted into the first hole to prevent the under-shaped hole from coming out. The second shaft portion is It is formed into a cylindrical shape and inserted into the second hole. R It is something.

[0009] The airflow direction adjustment device according to claim 3 is the airflow direction adjustment device according to claim 1 or 2, wherein the first holes and the second holes are alternately arranged in the adjoining direction of the louvers.

[0010] The airflow direction adjustment device according to claim 4 is the airflow direction adjustment device according to any one of claims 1 to 3, wherein the second hole portion is an elongated hole extending along the rotation direction of the louver. Effect of the Invention

[0011] According to the airflow direction adjustment device described in claim 1, the louver corresponding to the second hole portion can be rotated close to its adjacent louver, and the gap between adjacent louvers can be reduced, thereby improving airtightness to prevent blockage of the air passage due to overlapping of adjacent louvers.

[0012] According to the airflow direction adjusting device of claim 2, in addition to the effects of the airflow direction adjusting device of claim 1, the first axis portion is unlikely to come out of the first hole portion when rotated, and the second axis portion can rotate smoothly within the second hole portion, so that the louvers corresponding to the second axis portion and the second hole portion can be reliably rotated to push adjacent louvers into each other, ensuring airtightness to prevent blockage of the air passage due to overlapping of adjacent louvers.

[0013] According to the airflow direction adjustment device of claim 3, in addition to the effect of the airflow direction adjustment device of claim 1 or 2, by rotating the louver corresponding to the second axis portion and the second hole portion, it is possible to more reliably close the gap with the adjacent louver, and the airtightness of the blockage of the air passage due to the overlap of adjacent louvers can be further improved.

[0014] According to the airflow direction adjusting device of claim 4, in addition to the effect of the airflow direction adjusting device of any one of claims 1 to 3, when the air passage is blocked by the louvers, the louvers corresponding to the second hole portions can be smoothly rotated. [Brief description of the drawings]

[0015] [Figure 1] 1 is a plan view showing an airflow direction control device according to a first embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view showing a part of the airflow direction adjustment device. [Diagram 3]FIG. 2A is a perspective view showing a first shaft portion, and FIG. 2B is a perspective view showing a second shaft portion. [Figure 4] FIG. 11 is a plan view showing an airflow direction control device according to a second embodiment of the present invention. [Diagram 5] FIG. 5 is an enlarged plan view of a portion of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A first embodiment of the present invention will now be described with reference to the drawings.

[0017] In FIG. 1 and FIG. 2, 1 is an airflow direction adjustment device. The airflow direction adjustment device 1 is also called an air outlet, a ventilator, a register, etc., and adjusts the blowing direction of air from an air conditioner or the like. In the following, in order to clarify the explanation, the leeward side of the airflow direction adjustment device 1, which is the side from which airflow blows out, is defined as the front side, the front side, or the near side, and the opposite side, that is, the upwind side, which is the side that receives airflow, is defined as the rear side, the back side, or the far side, and the left-right direction or width direction as viewed from the front side, and the up-down direction are defined. In this embodiment, the airflow direction adjustment device 1 is applied to an air conditioner for a vehicle such as an automobile. The airflow direction adjustment device 1 may be disposed in any position, but in the drawings, it is disposed so that the side indicated by the arrow FR is the front side, the side indicated by the arrow RR is the rear side, the side indicated by the arrow L is the left side, the side indicated by the arrow R is the right side, the side indicated by the arrow U is the upper side, and the side indicated by the arrow D is the lower side. These directions are merely illustrated as examples, and are to be changed as appropriate depending on the installation position and installation direction of the airflow direction adjustment device 1.

[0018] The airflow direction adjustment device 1 includes a case body 2. Inside the case body 2, an air passage 3 is formed, through which the conditioned air flows as a fluid. The conditioned air passes through the air passage 3 in a forward / rearward direction, which is a predetermined first direction. That is, in the air passage 3, the rear side is the upstream side in the ventilation direction, and the front side is the downstream side in the ventilation direction. The case body 2 also has an inlet for receiving the conditioned air into the air passage 3. The inlet is located at the rear end, which is the upstream end of the air passage 3. The case body 2 also has an outlet 5, through which the conditioned air that has passed through the air passage 3 is blown out. The outlet 5 is located at the front end, which is the downstream end of the air passage 3. The outlet 5 is connected to the interior of the vehicle cabin, and is disposed so as to blow the conditioned air into the vehicle cabin.

[0019] In this embodiment, case body 2 is formed in a square tube shape. Case body 2 has a predetermined length in the ventilation direction of air passage 3. Case body 2 is composed of one or more members.

[0020] A louver 10, which is one of the air distribution bodies serving as an air distribution section, is attached to the case body 2. The louver 10 is an air distribution member also called a fin. The louver 10 is rotatably supported by the case body 2. In this embodiment, the louver 10 has a cylindrical rotating shaft 11, and plate-shaped one and other straightening sections 12, 13 are formed by extending from one side and the other side of the rotating shaft 11 in the direction perpendicular to the axis. The one and other straightening sections 12, 13 form a main body of the louver 10 that straightens the air conditioning air. The one and other straightening sections 12, 13 are formed so that their thickness gradually decreases as they move away from the rotating shaft 11.

[0021] In the illustrated example, the louvers 10 rotate left and right around an axis extending in the up-down direction to distribute air in the left and right direction. That is, the louvers 10 are vertical fins with rotation shafts 11 rotatably supported on the upper and lower parts of the case body 2. In this state, the louvers 10 are arranged such that the thickness directions of the one and other straightening sections 12, 13 are in the left and right direction, with one straightening section 12 extending to the downstream side, which is the rear side, and the other straightening section 13 extending to the upstream side, which is the front side.

[0022] A plurality of louvers 10 are arranged facing the air outlet 5. A plurality of louvers 10, for example five louvers 10, are arranged in the left-right direction so that the rotation axes 11, i.e., the rotation axis lines A which are the central axes of the rotation axes 11, are parallel to each other. For clarity of explanation, these five louvers 10 will be referred to as first to fifth louvers 10a to 10e from left to right in this embodiment. In this embodiment, the louvers 10 are arranged across the entire left-right width of the air outlet 5.

[0023] In addition, the distance between the rotation axes A, A of the adjacent louvers 10, 10 is set to be shorter than the length from the rotation axis A of one of the straightening sections 12. In this embodiment, the distance between the rotation axes A, A of the adjacent louvers 10, 10 is set to be approximately the same as the length from the rotation axis A of the other straightening section 13. Therefore, as shown in FIG. 1, the tip of one straightening section 12, which is at least a part of one of the adjacent louvers 10, overlaps with the rotation axis 11 at a predetermined rotation position relative to the other of the adjacent louvers 10, for example, at a position rotated maximally in a predetermined direction, in the illustrated example, to the right, and exceeds the rotation axis A. In this embodiment, the tip of one straightening section 12 of the adjacent louvers 10 is arranged to overlap with the base end of one of the straightening sections 12 from the other straightening section 13 beyond the rotation axis 11 at a predetermined rotation position relative to the other of the adjacent louvers 10. In the illustrated example, of the adjacent louvers 10, 10, one straightening section 12 of the left louver 10 is arranged to overlap from the other straightening section 13 of the right louver 10 across the rotation axis 11 to one straightening section 12. In this way, one of the adjacent louvers 10, 10 sequentially overlaps the other at a predetermined rotation position, making it possible to block the air passage 3. In other words, the multiple louvers 10 in this embodiment function as a shutting member that blocks the air conditioning wind.

[0024] The maximum rotation position of louver 10 in the direction in which it blocks air passage 3, i.e., the shut direction, is restricted by stopper portion 14. Stopper portion 14 is formed on case body 2. A part of louver 10 abuts against stopper portion 14, thereby restricting louver 10 from rotating any further. In this embodiment, the tip of the other straightening portion 13 of first louver 10a and the tip of one straightening portion 12 of fifth louver 10e are capable of abutting against stopper portions 14a, 14b, respectively.

[0025] These multiple louvers 10 are connected to each other by links 15, and are interlocked so that their rotation directions are the same. In the illustrated example, the links 15 are connected to the other straightening section 13. In this embodiment, the other straightening section 13 is formed shorter in the axial direction of the rotation shaft 11 than the one straightening section 12. In the illustrated example, the other straightening section 13 is set so that its upper end is lower than the one straightening section 12. The links 15 are located at the upper end of this other straightening section 13.

[0026] Link 15 is formed in an elongated shape and is arranged so as to connect louvers 10 in an adjacent direction, in the left-right direction in this embodiment. In this embodiment, link 15 is plate-shaped and arranged so as to have a thickness in the up-down direction.

[0027] The louver 10 and the link 15 are connected to each other via a connecting portion 17. The connecting portion 17 has a hole portion 18 and a shaft portion 19 that is inserted into the hole portion 18 and held rotatably.

[0028] Hole 18 is formed in one of louver 10 and link 15, and shaft 19 is formed in the other of louver 10 and link 15. In this embodiment, hole 18 is formed in link 15, and shaft 19 is formed in louver 10.

[0029] The holes 18 are set according to the number of louvers 10. The holes 18 are formed penetrating the link 15 in the thickness direction. The holes 18 are arranged in the longitudinal direction of the link 15 at approximately equal intervals.

[0030] The hole 18 has a first hole 18a and a second hole 18b. The first hole 18a has a relatively small opening, and the second hole 18b has an opening larger than the first hole 18a. In this embodiment, the first hole 18a is a round hole, and the second hole 18b is an elongated hole. The second hole 18b is preferably set to correspond to the louvers 10 other than the louvers 10 at both ends in the adjacent direction. In this embodiment, the second hole 18b is preferably set to correspond to at least one of the second louvers 10b to the fourth louvers 10d. The first hole 18a and the second hole 18b are alternately arranged in the adjacent direction of the louvers 10, which is the left-right direction in this embodiment. In the illustrated example, the first hole 18a is located at both ends and the center of the link 15, and the second hole 18b is located between them. That is, first holes 18a correspond to first louver 10a, third louver 10c, and fifth louver 10e, and second holes 18b correspond to second louver 10b and fourth louver 10d.

[0031] Second hole portion 18b is formed along an arc or a tangent thereof centered on rotation axis A of louver 10. That is, in this embodiment, second hole portion 18b is an elongated hole extending along the rotation direction of louver 10.

[0032] On the other hand, the shaft portions 19 are set in the same number as the holes 18. The shaft portions 19 are formed parallel to the rotation axis 11 and the rotation axis A. In this embodiment, the shaft portions 19 are provided to protrude from an upper portion of the other straightening portion 13 of the louver 10 at a position away from the rotation axis 11 and the rotation axis A. In the example shown in the figure, the shaft portions 19 are provided to protrude from an upper portion of the other straightening portion 13 to an upper portion of a shaft installation portion 21 extending in the thickness direction of the other straightening portion 13.

[0033] The shaft portion 19 has a first shaft portion 19a rotatably inserted into the first hole portion 18a and a second shaft portion 19b rotatably inserted into the second hole portion 18b. That is, the first shaft portion 19a corresponds to the first louver 10a, the third louver 10c, and the fifth louver 10e, and the second shaft portion 19b corresponds to the second louver 10b and the fourth louver 10d.

[0034] As shown in Fig. 3(a), first shaft portion 19a has an undershape 23 formed between its tip and base ends to prevent it from slipping out of first hole portion 18a (Fig. 1). That is, first shaft portion 19a is formed so that its diameter gradually increases from the tip to the middle portion and gradually decreases from the middle portion to the base end. For example, in this embodiment, first shaft portion 19a is formed in a spherical shape.

[0035] As shown in FIG. 3(b), the second shaft portion 19b is formed in a cylindrical shape. That is, the second shaft portion 19b has a straight shape with a substantially constant diameter from the tip to the base. The second shaft portion 19b is rotatable within the second hole portion 18b (FIG. 1) and is movable within the second hole portion 18b (FIG. 1). In this embodiment, as shown in FIG. 1 and FIG. 2, the second hole portion 18b has a clearance in the rotation direction of the louver 10 (the shut direction that blocks the air passage 3) with respect to the second shaft portion 19b, so that the second shaft portion 19b is movable within the second hole portion 18b in the longitudinal direction of the second hole portion 18b.

[0036] In this embodiment, although not shown, downstream louvers (horizontal fins) which are other air distribution bodies that rotate in a direction intersecting the louvers 10, for example, in the vertical direction, are attached to the case body 2 downstream, i.e., rearward, of the louvers 10. The downstream louvers are arranged facing the air outlet 5, and both ends are rotatably supported by the case body 2. One or more downstream louvers are set. An operating part such as a knob for rotating the louvers 10 is arranged on the downstream louvers 10 movably along the downstream louvers, i.e., in the left-right direction, and an operating connection part 25 for connecting the operating part and the louvers 10 is formed on the louver 10 (third louver 10c) arranged in the center in the left-right direction. The operating connection part 25 is formed, for example, along a direction parallel to the rotation axis A. In addition, a cutout part 26 is formed on the louvers 10 adjacent to the operating connection part 25 and extending from one straightening part 12 to the other straightening part 13. In addition, the louver 10 (fourth louver 10d) adjacent to the louver 10 (third louver 10c) located in the center in the left-right direction has an accommodation section 27 recessed in the thickness direction of the other straightening section 13, which can accommodate an operating section such as a gear that operates in response to the movement of the operating section when the operating section is moved.

[0037] Next, the operation of the first embodiment will be described.

[0038] The airflow direction adjustment device 1 is disposed with its inlet connected to an air conditioner. The conditioned air from the air conditioner passes through the air passage 3, is directed left and right by the louvers 10, is directed up and down by the downstream louvers, and is blown out from the air outlet 5.

[0039] In the open position (air distribution position) shown in Fig. 2, the louvers 10 face the air outlet 5. By operating the operating unit up and down, the downstream louvers rotate up and down, straightening the conditioned air in the up and down direction. Also, by operating the operating unit left and right along the downstream louvers, the operating unit and operating connector 25 engage with each other, causing the louvers 10 to rotate left and right, straightening the conditioned air in the left and right direction. Therefore, by combining the up and down air distribution by the rotation of the downstream louvers and the left and right air distribution by the rotation of the louvers 10, the air direction adjustment device 1 can adjust the air direction in any direction.

[0040] On the other hand, louvers 10 are used to block the conditioned air passing through air passage 3 from being blown out from air outlet 5. That is, by rotating louvers 10 to the maximum in one predetermined rotation direction, in this embodiment to the right (clockwise in FIG. 1), adjacent louvers 10 overlap one another in sequence to block air passage 3, as shown in FIG.

[0041] At this time, the straightening section 12 of one of the adjacent louvers 10, 10, in this embodiment the louver 10 located on the left side, overlaps the other louver 10, i.e., the adjacent louver 10 on the right side, exceeding the pivot axis 11 and pivot axis A, so that the right louver 10 is pushed forward, i.e., upstream, by the adjacent louver 10 on the left side. In this embodiment, the second louver 10b to the fifth louver 10e are pushed upstream by the first louver 10a to the fourth louver 10d, respectively.

[0042] Therefore, as the second axis portion 19b moves within the second hole portion 18b in the rotation direction of the louver 10, i.e., the longitudinal direction of the second hole portion 18b, the louvers 10 corresponding to the second hole portion 18b, in this embodiment the second louver 10b and the fourth louver 10d, rotate further to the right (shut direction).

[0043] Therefore, second louver 10b pushes first louver 10a further downstream, and fourth louver 10d pushes third louver 10c further downstream.

[0044] Therefore, adjacent louvers 10, 10, i.e., the first louver 10a and the second louver 10b, the second louver 10b and the third louver 10c, the third louver 10c and the fourth louver 10d, and the fourth louver 10d and the fifth louver 10e, are pushed into each other in the shut direction, and in particular, the third louver 10c is pushed into the second louver 10b from the downstream side and into the fourth louver 10d from the upstream side, so that the gaps between adjacent louvers 10, 10 are hermetically closed.

[0045] Although the second louver 10b and the fourth louver 10d are pushed upstream by the first louver 10a and the third louver 10c, the first louver 10a and the fifth louver 10e are abutted against the stopper portions 14a, 14b of the case body 2, respectively, thereby restricting the rotational position of each louver 10, and therefore each louver 10 does not rotate any further and remains in a shut state that blocks the air passage 3.

[0046] In addition, even if the fifth louver 10e hits the stopper portion 14b first when the louver 10 rotates in the shut direction, the second louver 10b and the fourth louver 10d corresponding to the second hole portion 18b are pushed by the wind pressure of the air conditioning air, and the second shaft portion 19b rotates according to the clearance of the second hole portion 18b, thereby reducing the gap between the first louver 10a and the third louver 10c and ensuring airtightness of the closed air passage 3. In this case, although a small gap is generated between the first louver 10a and the stopper portion 14a, in this embodiment, since the louver 10 is inclined to the right in the shut state, the air conditioning air flows from the left side to the right side, that is, from the first louver 10a side to the fifth louver 10e side to join together, so only a small amount of the air conditioning air leaks from the gap between the first louver 10a and the stopper portion 14a, and the performance of the air direction adjustment device 1 is hardly affected.

[0047] On the other hand, if the first louver 10a hits the stopper portion 14a first when the louver 10 rotates in the shut direction, a gap will be generated between the fifth louver 10e and the stopper portion 14b, and since the louver 10 is inclined to the right in the shut state as described above, the conditioned air flows from the first louver 10a side toward the fifth louver 10e side so as to merge, there is a risk of the conditioned air leaking largely from the gap between the fifth louver 10e and the stopper portion 14b, and such leakage will affect the performance of the air direction adjustment device 1. For this reason, in the air direction adjustment device 1, it is preferable to adjust the stopper portion 14a by cutting so that the louver 10 located at the extreme end of the rotation direction (to the right in this embodiment) for the shut state, the fifth louver 10e located at the right end in this embodiment, hits the stopper portion 14 first before the louver 10 located at the opposite end thereof, the first louver 10a located at the extreme left end in this embodiment.

[0048] As described above, according to the first embodiment, at least a part of one of the adjacent louvers 10, 10 is disposed so as to exceed the rotation axis A at a predetermined rotation position relative to the other, and the first hole 18a and the second hole 18b having a larger opening than the first hole 18a are set in the hole 18 into which the shaft 19 for connecting the louvers 10 and the link 15 is inserted. Even if the louver 10 rotated in the shut direction hits the stopper 14 first and the rotation position is restricted, the louver 10 corresponding to the second hole 18b can rotate close to the adjacent louver 10, and the gap between the adjacent louvers 10, 10 can be reduced. Therefore, the airtightness of the blockage of the air passage 3 due to the overlap of the adjacent louvers 10, 10 can be improved.

[0049] In addition, the shaft portion 19 is provided with a first shaft portion 19a having an under-shape 23 to prevent it from coming loose and being inserted into the first hole portion 18a, and a second shaft portion 19b formed in a cylindrical shape and being inserted into the second hole portion 18b. This means that the first shaft portion 19a is unlikely to come loose from the first hole portion 18a when rotated, while the second shaft portion 19b can rotate smoothly within the second hole portion 18b. This allows the louvers 10 corresponding to the second shaft portion 19b and the second hole portion 18b to be rotated reliably so that adjacent louvers 10, 10 are pushed into each other, ensuring airtightness against blockage of the air passage 3 due to overlapping of adjacent louvers 10, 10.

[0050] By arranging the first hole portions 18a and the second hole portions 18b alternately in the adjacent direction of the louvers 10, it becomes possible to more reliably close the gap between the adjacent louvers 10 by rotating the louvers 10 corresponding to the second axis portion 19b and the second hole portions 18b, thereby further improving the airtightness of the blockage of the air passage 3 due to the overlap of adjacent louvers 10, 10.

[0051] Furthermore, by making second hole portion 18b an elongated hole extending along the rotation direction of louver 10, when louver 10 blocks air passage 3, louver 10 corresponding to second hole portion 18b can be rotated smoothly.

[0052] In the first embodiment described above, the second hole 18b is not limited to an elongated hole, and may be a round hole having a larger opening than the first hole 18a, as in the second embodiment shown in Figures 4 and 5. In this case, the second hole 18b is formed so as to have a clearance between it and the second shaft 19b at least in the direction of rotation of the louver 10 in the shut direction. Even in this case, the louver 10 corresponding to the second hole 18b can rotate close to the adjacent louver 10, the gap between the adjacent louvers 10, 10 can be reduced, and the airtightness of the air passage 3 due to the overlap of the adjacent louvers 10, 10 can be improved, and the same effects as those of the first embodiment can be achieved.

[0053] In addition, in each of the above embodiments, the holes 18 may be formed in the louvers 10 and the shafts 19 may be formed in the links 15 .

[0054] Furthermore, the number of louvers 10 is not limited to five, but may be any number.

[0055] Furthermore, the configuration is not limited to one in which the louvers 10 are rotated by operating an operating unit, and may be one in which the louvers 10 are rotated, for example, by moving the links 15 directly or indirectly manually or by using an actuator or the like. In that case, a downstream louver may not be provided. In other words, the downstream louvers and the operating unit are not essential components. Therefore, in addition to the louvers 10, any air distribution body may be movably arranged in the case body 2, or only the louvers 10 may be arranged.

[0056] Furthermore, louver 10 does not need to have pivot shaft 11, and may be configured to be rotatably supported on a pivot shaft formed in case body 2. [Industrial Applicability]

[0057] The present invention can be suitably used, for example, as a wind direction adjustment device for an air conditioner in an automobile. [Explanation of symbols]

[0058] 1 Wind direction adjustment device 3 Wind path 10 Louver 15 Links 18 Hole 18a First hole 18b Second hole 19 Shaft 19a First shaft part 19b Second shaft part 23 Under Shape A Rotation axis

Claims

1. A wind direction adjustment device comprising a plurality of louvers arranged adjacent to each other so that their rotation axes are parallel to each other, and a link that rotates the louvers in conjunction with each other, wherein one of the adjacent louvers overlaps the other louvers in a predetermined rotation position to block an air passage, One of the adjacent louvers is disposed so that at least a portion of the louver extends beyond a rotation axis line at the predetermined rotation position relative to the other louver, A shaft portion is formed on either the louver or the link, a hole into which the shaft portion is inserted is formed in the other of the louver and the link; The hole portion includes a first hole portion and a second hole portion having an opening larger than that of the first hole portion. The shaft portion includes a first shaft portion to be inserted into the first hole portion and a second shaft portion to be inserted into the second hole portion, The second hole portion has a clearance with respect to the second shaft portion in the rotation direction of the louver, so that the louver corresponding to the second hole portion can be rotated close to the adjacent louver by the movement of the second shaft portion within the second hole portion. A wind direction adjustment device characterized by the above.

2. The first shaft portion has an under-shape for preventing it from coming out and is inserted into the first hole portion, The second shaft portion is formed in a cylindrical shape and is inserted into the second hole portion.

2. The airflow direction adjusting device according to claim 1.

3. The first holes and the second holes are alternately arranged in the adjoining direction of the louvers.

3. The airflow direction adjusting device according to claim 1 or 2.

4. The second hole is an elongated hole extending in the direction of rotation of the louver.

4. The airflow direction adjusting device according to claim 1, wherein the airflow direction adjusting device is a wind direction adjusting device.

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