JP2010179879A - Air blow-off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air blow-off device that is superior in manufacturing costs while surely maintaining the performance to regulate an air-flow direction. <P>SOLUTION: The air blow-off device 10 includes a first cylindrical body 21, a second cylindrical body 22 supported inside the first cylindrical body 21, and an air-flow regulating member 30. The second cylindrical body 22 includes each protrusion (respectively arranged at 22e) integrally formed on the second cylindrical body 22. Each protrusion protrudes toward the radial outside of the second cylindrical body 22 while elastically pressing the inner wall of the first cylindrical body 21 toward the radial outside of the second cylindrical body 22. By this, it is possible to prevent the relative displacement (a backlash) between the first cylindrical body 21 and the second cylindrical body 22, thereby maintaining a smooth rotating state of the second cylindrical body 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air blowing device used for an air conditioner such as an automobile.

  Conventionally, for the purpose of adjusting the indoor environment of automobiles, etc., switching between supply and shutoff of air conditioning air etc. in the same room and switching the air flow direction when supplying air conditioning air etc. into the same room has been performed Air blowing devices have been proposed.

  One conventional air blowing device includes a plurality of wind direction adjusting plates, an inner cylindrical body, and an outer cylindrical body fixed to a vehicle body interior member or the like. The plurality of wind direction adjusting plates are connected to each other by a connecting member and rotate in conjunction with each other. Further, the plurality of wind direction adjusting plates are supported by the inner cylinder so as to be rotatable around a rotation axis perpendicular to the rotation axis (center axis) of the inner cylinder. ing. On the other hand, the inner cylindrical body that supports a plurality of wind direction adjusting plates has an outer cylindrical body that is coaxially rotatable with respect to the outer cylindrical body around the axis of the outer cylindrical body inside the outer cylindrical body. Is supported against. That is, this air blowing device can adjust the rotation angle of the wind direction adjusting plate with respect to both the axis of the outer cylindrical body and the rotation axis perpendicular to the coaxial line. Thereby, this air blowing apparatus can operate the blowing direction of an airflow (for example, refer patent document 1). Hereinafter, for the sake of convenience, the rotation axis of a member is also simply referred to as “axis”.

JP 2004-237854 A

  By the way, the conventional air blowing device has a clearance (clearance) between the inner cylindrical body and the outer cylindrical body so that the inner cylindrical body can smoothly rotate without contacting the outer cylindrical body. It is configured to exist.

  On the other hand, the “inner cylindrical body” employed in the conventional air blowing device has a “plurality of supporting arm portions” extending from the inner wall toward the axis (center axis) and the plurality of supporting arm portions. And a “central bearing portion” held at a predetermined position on the axis. On the other hand, the “outer cylindrical body” includes a “net part” provided so as to cover the opening (air inflow part) and a “center” held at a predetermined position on the axis (center axis) by the net part. A shaft portion ". The central shaft portion is inserted into the central bearing portion of the inner cylindrical body when the inner cylindrical body is supported inside the outer cylindrical body. As a result, the inner cylindrical body can rotate around the axis of the outer cylindrical body around the “central shaft portion of the outer cylindrical body inserted into the central bearing portion”.

  With the above configuration, the “inner cylindrical body axis” and the “outer cylindrical body axis” are made to coincide with each other, and the inner cylindrical body and the outer cylindrical body are prevented from being decentered. Even so, it is possible to avoid relative movement of the inner cylindrical body relative to the outer cylindrical body (so-called rattling). Furthermore, by providing the above “gap”, even when the shapes of the inner cylinder and the outer cylinder change due to, for example, a temperature change, both of them make excessive contact, making it difficult or impossible to rotate the inner cylinder. (Hereinafter, a state in which the rotation of the inner cylindrical body is difficult or impossible is referred to as a “rotation abnormal state”).

  However, since the above-described support arm portion and the central bearing portion are provided so as to cover the opening portion of the inner cylindrical body, it is an obstacle of “operation for assembling a member such as a wind direction adjusting plate inside the inner cylindrical body” Become. Therefore, this assembling work becomes complicated, and the assembling work takes time. As a result, there exists a problem that the cost which manufactures an air blowing apparatus increases.

  Here, it is conceivable to deal with the above problem by removing the “plurality of supporting arm portions” and the “central bearing portion” from the inner cylindrical body. However, when these are removed from the inner cylinder, in order to avoid rattling of the inner cylinder, the “gap” between the outer wall surface of the inner cylinder and the inner wall surface of the outer cylinder is made very small. There is a need. However, if the “gap” is made very small, the inner cylinder may fall into an abnormal rotation state when the shapes of the inner cylinder and the outer cylinder change as described above.

  In other words, when the plurality of support arm portions and the central bearing portion are removed from the inner cylindrical body, it is also referred to as “a state in which the inner cylindrical body can rotate smoothly inside the outer cylindrical body (hereinafter referred to as“ normally rotated state ”). ) ”May not be maintained.

  The present invention has been made to address the above problems. That is, an object of the present invention is to provide an air blowing device that can reduce the manufacturing cost by facilitating the manufacturing and can reliably maintain the normal rotation state.

In order to achieve the above object, an air blowing device of the present invention includes a first cylindrical body, a second cylindrical body, and a wind direction adjusting plate, and rotatably supports the second cylindrical body inside the first cylindrical body. At the same time, the wind direction adjusting plate is rotatably supported inside the second cylindrical body. More specifically,
The air blowing device of the present invention is
A first cylindrical body that forms an air lead-out path, and air that flows in from an opening portion on the rear end side of the first cylindrical body is blown out from an opening portion on the front end side of the first cylindrical body. "When,
A “second cylindrical body” disposed inside the first cylindrical body and rotatably supported around the axis of the first cylindrical body with respect to the first cylindrical body;
A wind direction adjusting plate for adjusting the direction of air blown from the first cylindrical body, and is disposed inside the second cylindrical body and is an axis of the second cylindrical body with respect to the second cylindrical body. A “wind direction adjusting plate” that is supported so as to be rotatable about a rotation axis perpendicular to the axis of the second cylindrical body.

In this air blowing device,
The second cylindrical body is a first protrusion that elastically presses the inner wall of the first cylindrical body toward the radially outer side of the second cylindrical body, and is formed integrally with the second cylindrical body. And at least one first protrusion protruding outward in the radial direction of the second cylindrical body. In the present specification, the side through which air flows in each member is referred to as “rear end side”, and the side from which air flows out is referred to as “front end side”.

  In the air blowing device of the present invention configured as described above, the “first protrusion” formed on the “second cylindrical body” has the second cylindrical body supported inside the first cylindrical body, The inner wall of the first cylindrical body is “elastically pressed” toward the radially outer side of the second cylindrical body. Here, when one of the “at least one first protrusion” presses the inner wall of the first cylindrical body, the first protrusion receives a reaction force from the inner wall of the first cylindrical body. . This reaction force is directed in the direction opposite to the direction in which the first protrusion presses the inner wall of the first cylindrical body (that is, radially inward). Since the first protrusion is formed “integrally” with the second cylindrical body, the second cylinder receives a force corresponding to the reaction force applied to the first protrusion.

  Therefore, by the force according to the reaction force, the outer wall of the second cylindrical body (if there are two or more first protrusions, the other first different from the first protrusion receiving the reaction force) (Including the protrusion) abuts against the inner wall of the first cylindrical body. Therefore, the second cylindrical body is prevented from moving relative to the first cylindrical body in the radial direction. Further, when the second cylinder is to move relative to the first cylinder in the radial direction due to an external force or the like applied to the second cylinder, the second protrusion is moved from the first protrusion to the second cylinder. A force is applied to prevent relative movement of the cylinder. This prevents the second cylinder from moving relative to the first cylinder (rattle).

  In addition, since the first protrusion elastically presses the inner wall of the first cylindrical body, for example, the shape of the first cylindrical body and the second cylindrical body is changed due to a temperature change or the like. Even so, the first protrusions can be displaced according to their shape changes. That is, the first protrusion can absorb the shape change of the first cylindrical body and the second cylindrical body. Thereby, since it can avoid that a 1st cylindrical body is pressed with an excessive force with respect to a 2nd cylindrical body, it can prevent that a 2nd cylindrical body falls into a rotation abnormal state. As a result, the air blowing device of the present invention can maintain a normal rotation state.

  As described above, the air blowing device of the present invention can maintain a normal rotation state even without the plurality of support arm portions and the central bearing portion provided in the conventional air blowing device. As a result, since the air blowing device can be easily manufactured, the manufacturing cost of the air blowing device can be reduced.

  In addition, in the air blowing device of the present invention, even when vibration or the like is applied to the air blowing device from the outside of the air blowing device, the first protrusion can absorb (mitigate) the vibration. Therefore, the outer wall surface of the second cylindrical body can be prevented from colliding with the inner wall surface of the first cylindrical body. As a result, the air blowing device of the present invention can also prevent the generation of abnormal noise due to the collision between the first cylindrical body and the second cylindrical body (hereinafter, this abnormal noise is referred to as “impact noise”). Also called.)

  The number of first protrusions, the position where the first protrusions are formed, the magnitude of the force with which the first protrusions press the inner wall of the second cylinder, etc. It can be appropriately determined within a range in which the rotation of the second cylinder is not hindered by being pressed by the two cylinders with an excessive force.

The air blowing device of the present invention further includes
A load applying member that urges the second cylindrical body forward in the axial direction, which is along the axis of the second cylindrical body and toward the front end side of the second cylindrical body, and is held by the second cylindrical body And a “load applying member” that comes into contact with the first cylindrical body at a “first predetermined location” of the first cylindrical body,
A “restricting member” that restricts the second cylindrical body from moving forward by a predetermined distance relative to the first cylindrical body in the axial direction;
Is provided.

  In the air blowing device including the “load applying member” and the “regulating member”, the second cylindrical body is a direction along the axis of the second cylindrical body and toward the rear end side of the second cylindrical body. A second protrusion that protrudes toward the “back in the axial direction” and abuts against the first cylindrical body at a “second predetermined location” of the first cylindrical body, and is formed integrally with the second cylindrical body. It is preferable to provide a second protrusion.

  As described above, the air blowing device of the present invention maintains a normal rotation state by the “first protrusion” formed on the second cylindrical body. However, when a large external force is applied to the second cylinder so as to incline the axis of the second cylinder with respect to the axis of the first cylinder, the normal rotation state is sufficiently achieved only by the first protrusion. There is a possibility that it cannot be maintained.

  Therefore, in the above configuration, the second cylindrical body is prevented from moving forward by a predetermined distance with respect to the first cylindrical body with respect to the first cylindrical body by the “regulating member”. Further, the second cylindrical body is biased “forward in the axial direction” by the load applying member. In addition, the second cylindrical body protrudes toward the “back in the axial direction” and does not move rearward in the axial direction by the “second protrusion” contacting the first cylindrical body.

  With the above configuration, it is possible to more reliably prevent the axis of the second cylindrical body from “inclining” with respect to the axis of the first cylinder. Hereinafter, this point will be described in more detail with reference to FIG. FIG. 1 is a schematic diagram for explaining a state in which the second cylinder is supported in the first cylinder, and the first cylinder, the second cylinder supported in the first cylinder, and the restriction. The cross section in the case of cutting members in a plane parallel to their axes is shown.

  First, for example, a case where the second cylindrical body is provided with a load applying member “only” will be described. In this case, as shown in FIG. 1A, the second cylindrical body 22 is regulated by the regulating member 23 so as not to move forward in the axial direction from the predetermined position PP. It is pressed in the left direction in FIG. 1 (see the arrow in the figure). At this time, the first protrusion P <b> 1 formed on the second cylindrical body 22 elastically presses the inner wall surface of the first cylindrical body 21, and the second cylindrical body 22 against the first cylindrical body 21. In contrast, relative movement in the radial direction (rattle) is prevented.

  Here, when the second cylindrical body 22 moves rearward in the axial direction from the predetermined position PP (rightward in FIG. 1) due to the external force applied to the second cylindrical body 22, for example, in FIG. As shown, the axis AL of the second cylinder 22 “tilts” with respect to the axis of the first cylinder 21. When the axis AL of the second cylindrical body 22 is inclined, the first cylindrical body 21 is pressed against the second cylindrical body 22 with an excessively large force (hereinafter also referred to as “abnormal contact”). There is a possibility that the air blowing device falls into an abnormal rotation state.

  Therefore, when the second cylindrical body 22 includes the “second projecting portion P2 that protrudes rearward in the axial direction and contacts the first cylindrical body 21” as in the above configuration, as shown in FIG. The two cylindrical bodies 22 are prevented from moving rearward in the axial direction. Thereby, it is possible to prevent the axis AL of the second cylindrical body 22 from being inclined.

  As a result, the air blowing device of the present invention can prevent the axis of the second cylinder from tilting with respect to the axis of the first cylinder, and can thus maintain the normal rotation state more reliably.

  Here, the air blowing device of the present invention may be configured such that the second protrusion “elastically presses” the first cylindrical body. When the second protrusion is configured in this manner, even if the shapes of the first cylindrical body and the second cylindrical body change due to, for example, a temperature change, the second protrusion is appropriately formed into the first cylindrical body. The abutted state can be maintained. Thereby, a normal rotation state can be maintained more reliably.

  In the present invention, the “first protrusion” and the “second protrusion” are formed in any form as long as the second cylinder can maintain the normal rotation state as described above. It may be provided. Hereinafter, a preferable form of the “first protrusion” will be described first.

In the air blowing device of the present invention,
The second cylindrical body includes a “flexible portion” formed by at least one slit,
The “first protrusion” is preferably provided in the flexible portion.

  By providing the first projecting portion on the “flexible portion” provided on the second cylindrical body, the flexible portion is elastically deformed, and the above-described “first projecting portion is the inner wall of the first cylindrical body”. The function of pressing elastically toward the outside in the radial direction can be obtained. In other words, the above function can be obtained without providing an elastic member or the like separate from the second cylindrical body.

  In addition, the magnitude of the force with which the first protrusion presses the inner wall of the first cylindrical body changes according to the shape of the flexible portion. Therefore, by changing the shape of the flexible portion according to the environment in which the air blowing device is used, the magnitude of the force with which the first protrusion presses the inner wall of the first cylindrical body is set to an appropriate value. Can do. Thereby, the air blowing apparatus which can maintain a normal rotation state more reliably can be obtained.

  Note that the shape of the flexible portion can be easily and freely determined by changing the length, width, shape, and the like of the slit provided in the second cylindrical body. Hereinafter, preferable examples of the shape of the flexible portion will be described.

In the air blowing device of the present invention,
Preferably, the flexible portion is formed such that one end portion is “connected” to the second cylindrical body and another end portion different from the one end portion is a “free end”. .

As an alternative,
The flexible portion is preferably formed such that “both” of one end and the other end different from the one end are “connected” to the second cylindrical body.

  In any of the cases described above, the magnitude of the force with which the first protrusion presses the inner wall of the first cylindrical body can be adjusted by changing the length and width of the flexible portion. The position on the flexible part where the first protrusion is provided is not particularly limited. For example, the first protrusion may be provided at the tip of the flexible part or may be provided at the center of the flexible part.

Furthermore, in the air blowing device of the present invention,
The first protrusion provided on the flexible portion is preferably configured to have a curved surface shape.

  As described above, the first protrusion elastically presses the inner wall of the first cylindrical body. Therefore, when the second cylinder rotates inside the first cylinder, the first protrusion moves on the inner wall surface of the first cylinder while maintaining a state in contact with the inner wall surface of the first cylinder. . Therefore, if the first protrusion is configured to have a curved shape, the first protrusion can easily get over the unevenness even when there is unevenness on the inner wall surface of the first cylindrical body, for example. Can do. Thereby, the air blowing apparatus which can maintain a normal rotation state more reliably can be obtained.

Next, a preferred form of the “second protrusion” will be described.
That is, in the air blowing device of the present invention,
The first cylindrical body has a “annular protrusion” including a plurality of protrusions arranged in an annular shape along the inner wall surface of the first cylinder.
The load applying member has a curved surface shape that abuts against the annular projection at the first predetermined position that is a part of the annular projection and elastically presses the annular projection. With protrusions,
The second protrusion has a flat surface at a tip portion of the second protrusion, and the plurality of the annular protrusions at the second predetermined position where the flat surface is a part of the annular protrusion. It is preferable to be configured to abut against the tip of at least two of the protrusions.

  As described above, the second protrusion is in contact with the first cylindrical body to prevent the second cylindrical body from moving rearward in the axial direction, so that the axis of the second cylindrical body becomes the axis of the first cylindrical body. To prevent tilting (see FIG. 1). In the above configuration, the second protrusion includes a “plane” having the shape described above, and abuts on the “annular protrusion” of the first cylindrical body. Here, first, the “annular protrusion” that is a member with which the second protrusion abuts will be described.

  The “annular protrusion” is a portion including a plurality of protrusions arranged in an annular shape along the inner wall surface of the first cylindrical body. A “third protrusion” included in the “load applying member” is elastically pressed against the annular protrusion. Since the load applying member is held by the second cylindrical body, it moves with the rotation of the second cylindrical body. At this time, since the third projection has a curved surface shape and is elastically pressed by the annular projection, the third projection is `` so that it can get over sequentially '' while maintaining the state of contact with the annular projection. Moving. Thereby, the operation load (hereinafter also referred to as “rotational operation load”) when rotating the second cylindrical body, and the moderation feeling at that time (hereinafter also referred to as “rotational operation moderation feeling”). Can be obtained.

  Next, the “second protrusion” that comes into contact with the “annular protrusion” will be described. The flat surface provided at the tip of the second protrusion is in contact with the “tips of at least two protrusions” of the plurality of protrusions of the annular protrusion. Therefore, the tip of the second protrusion does not enter “between the protrusions” of the annular protrusion. Therefore, when the second protrusion moves with the rotation of the second cylindrical body, the tip of the second protrusion can move on the “tip of the protrusion of the annular protrusion”.

  Thereby, even when the second cylindrical body is rotating, the magnitude of the force applied to the second cylindrical body by the second protrusion can be prevented from changing. As a result, even when the second cylindrical body is rotating, it is possible to reliably prevent the inclination of the axis of the second cylindrical body. Further, it is possible to suppress the inclination of the axis of the second cylindrical body that occurs when the load applying member gets over the protrusion as the second cylindrical body rotates.

  In addition, since the second protrusion is brought into contact with the “annular protrusion” for obtaining the rotational operation load, it is necessary to provide a part for the second protrusion to contact with the first cylindrical body individually. Absent. Therefore, the structure of the first cylindrical body can be simplified. As a result, the manufacturing cost of the air blowing device can be reduced.

  Here, the position at which the second protrusion is formed is not particularly limited. For example, the second protrusion can be formed on a flexible part on which the first protrusion is formed.

It is a schematic diagram for demonstrating a mode that another cylindrical body is supported inside one cylindrical body. It is a perspective view which shows one Embodiment of the air blowing apparatus of this invention. It is a disassembled perspective view of the air blowing apparatus shown in FIG. It is the schematic of the axial direction arm part which concerns on the air blowing apparatus shown in FIG. It is sectional drawing of the air blowing apparatus which cut | disconnected the air blowing apparatus shown in FIG. 2 by the plane along line 1-1. It is sectional drawing of the same air blowing apparatus which cut | disconnected the air blowing apparatus shown in FIG. 2 in the plane along line 2-2. It is sectional drawing of the same air blowing apparatus which cut | disconnected the air blowing apparatus shown in FIG. 2 in the plane along line 2-2. It is a schematic diagram for demonstrating a mode that another cylindrical body is supported inside the one cylindrical body in the air blowing apparatus shown in FIG. It is a schematic diagram for demonstrating the other example by which another cylindrical body is supported inside the one cylindrical body. It is the schematic which shows the other example of the inner register | resistor which can be applied to the air blowing apparatus of this invention. It is the schematic of the circumferential direction arm part with which the inner register shown in FIG. 10 is provided. It is the schematic which shows the further another example of the inner register | resistor which can be applied to the air blowing apparatus of this invention. It is the schematic which shows the further another example of the inner register | resistor which can be applied to the air blowing apparatus of this invention. It is the schematic which shows the further another example of the inner register | resistor which can be applied to the air blowing apparatus of this invention.

  Hereinafter, embodiments of the air blowing device of the present invention will be described with reference to the drawings.

  As shown in FIG. 2, the air blowing device 10 according to the embodiment of the present invention includes a cylindrical body 20 and an air flow adjusting member 30 that is rotatably supported inside the cylindrical body 20. As shown by an arrow A in FIG. 2, air flows into the air blowing device 10 from the rear end side of the cylinder 20, and the inflowed air flows to the front end side of the cylinder 20 (opening in which the air flow adjusting member 30 is provided). Part).

  As shown in FIG. 3, the cylindrical body 20 includes a cylindrical retainer 21, an inner register 22 supported inside the retainer 21, and an annular bezel 23 fitted to an end portion on the front end side of the retainer 21. , Is formed from. The retainer 21, the inner register 22, and the bezel 23 are coaxially arranged.

  The retainer 21 is a cylindrical body in which the front end portion 21a and the rear end portion 21b are opened. That is, the retainer 21 has a front end portion 21a that constitutes an air outlet and a rear end portion 21b that constitutes an air inlet. The inner diameter of the portion of the retainer 21 on the front end side from the substantially central portion in the axial direction is slightly larger than the inner diameter of the portion on the rear end side of the central portion in the axial direction of the retainer 21. The retainer 21 is connected to the front end portion and the rear end portion, and the retainer 21 has an annular stepped portion (hereinafter referred to as “a plurality of protrusions”) continuously provided on the inner peripheral portion thereof. This is referred to as an “annular protrusion”.) 21c is formed. Each of the plurality of protrusions protrudes in the axial direction and the front end side of the retainer 21 (see also FIGS. 5 to 7).

  Furthermore, the retainer 21 includes a plurality of locking claws 21d on the outer wall surface in the vicinity of the front end portion 21a. In addition, the retainer 21 includes a honeycomb-shaped net portion 21e provided so as to cover the open portion of the rear end portion 21b (see FIGS. 5 to 7).

  The inner register 22 is a cylindrical body in which a front end portion 22a and a rear end portion 22b are opened. The inner register 22 has a thin part and a thick part. The thick portion is provided at two locations facing each other. On one of the thick portions provided at these two locations, a load applying member attaching portion 22c having a concave shape is formed. The load applying member attachment portion 22c includes a circular recess and a groove extending from the recess along the axial direction of the inner register 22. On the other hand, a bearing hole 22d is formed on the other of the thick portions so as to face the circular concave portion of the load applying member mounting portion 22c.

  Further, the thin portion of the inner register 22 is provided with two pairs of slits (that is, two pairs of slits) extending along the axial direction from the end surface of the rear end portion 22b toward the front end portion 22a. . Each slit is open at its rear end and closed at its front end. That is, between one of the two pairs of slits, “one end is connected to the inner resistor 22 and the other end different from the one end is a free end. And an arm-shaped flexible portion 22e ”extending along the axial direction of the inner resistor 22 is formed. Hereinafter, the arm-shaped flexible portion 22e is also referred to as an “axial arm portion 22e”. Similarly, an axial arm portion 22e is formed between the other pair of slits. That is, the inner register 22 includes two axial arm portions 22 e formed integrally with the inner register 22.

  The two axial arm portions 22e are formed at positions sandwiching the thick portion where the above-described bearing hole 22d is formed, that is, at thin portions near both ends of the thick portion.

  Further, as shown in FIG. 4A, the axial arm portion (flexible portion) 22e includes an axial connection portion 22e1 having one end portion connected to the inner resistor 22, and a free connection between the axial connection portion 22e1. A first protrusion 22e2 that is provided at the tip of the end and protrudes radially outward of the inner register 22, and a tip that is provided at the tip of the free end of the axial connecting portion 22e1 and that extends along the axial direction of the inner register 22 The second protrusion 22e3 protrudes. The first protrusion 22e2 has a curved surface shape. Furthermore, as shown in FIG. 4B, a flat surface 22e4 is provided at the tip of the second protrusion 22e3.

  The description will be continued with reference to FIG. 3 again. The bezel 23 is an annular member. The bezel 23 includes a plurality of locking holes 23a on the outer periphery thereof. Each of the plurality of locking holes 23 a is provided at a position corresponding to each of the locking claws 21 d provided in the retainer 21.

  The air flow adjusting member 30 is a member in which a plurality of plate-like air direction adjusting plates are integrally connected. More specifically, the air flow adjusting member 30 has three air direction adjusting plates, a first air direction adjusting plate 31, a second air direction adjusting plate 32, and a third air direction adjusting plate 33. The three wind direction adjusting plates are coupled to each other by a first coupling member 34 and a second coupling member 35 (see FIG. 5). The first connecting member 34 and the second connecting member 35 have a substantially rectangular plate shape, and connect the respective ends of the three wind direction adjusting plates.

  The first wind direction adjusting plate 31 has a substantially disk shape. More specifically, the first wind direction adjusting plate 31 has a shape in front view substantially the same as the shape of the open portion (front end portion 22a) on the front end side of the inner register 22. Moreover, the 2nd wind direction adjustment board 32 and the 3rd wind direction adjustment board 33 have a substantially semicircular disk shape. Furthermore, a pair of round shaft-like rotation shafts 36 protruding outward in the radial direction of the second air direction adjusting plate 32 are provided at both ends of the second air direction adjusting plate 32 on the longer diameter side. Around the base end portion of the rotating shaft 36, a sliding portion is provided that forms an annular sliding surface 37 that is perpendicular to the rotating shaft 36.

  Each member constituting the air flow adjusting member 30 (that is, the three air direction adjusting plates 31 to 33, the two connecting members 34 and 35, the rotating shaft 36, etc.) is made of the same material (in this example). Is made of a synthetic resin and is molded integrally (inseparable).

  The air blowing device 10 further includes a load applying member 40. As shown in FIG. 3, the load applying member 40 is a member including a rotating shaft support portion 41, a prismatic (rod-shaped) connecting portion 42, two leg portions 43, and a third protrusion 44. These members constituting the load applying member 40 are made of the same material (in this example, synthetic resin) and are integrally formed (inseparable).

  More specifically, the rotation shaft support portion 41 is connected to one end portion of the coupling portion 42. A bearing hole 41 a is formed in the rotation shaft support portion 41.

  Each of the two leg portions 43 has a prismatic shape (bar shape). The two leg portions 43 are connected to the other end of the connecting portion 42 so as to have a V shape. That is, the two leg portions 43 extend at a predetermined angle (in this example, about 160 degrees) from the connection portion with the connecting portion 42. Thus, the rotation shaft support portion 41 and the two leg portions 43 are connected by the connecting portion 42.

  The third protrusion 44 is provided at the tip of each of the two leg portions 43. The third protrusion 44 protrudes in a direction along the longitudinal direction of the connecting portion 42. The third protrusion 44 has a curved surface shape.

  The air blowing device 10 is manufactured by sequentially assembling the above-described members. Hereinafter, a method for manufacturing the air blowing device 10 will be described.

  First, the load applying member 40 is fitted into the load applying member attaching portion 22 c of the inner register 22 so that the longitudinal direction of the connecting portion 42 is substantially parallel to the axis of the inner register 22. More specifically, the rotation shaft support portion 41 is fitted into the circular recess of the load applying member attaching portion 22c, and the connecting portion 42 is fitted into the groove portion of the load applying member attaching portion 22c. At this time, the load applying member 40 has a tip end portion of the leg portion 43 (that is, an end portion where the third protrusion 44 is provided) protruding beyond the rear end portion 22b of the inner resistor 22 toward the rear end side. Are held in the inner register 22.

  Next, the air flow adjusting member 30 is attached inside the inner resistor 22. More specifically, one of the pair of rotating shafts 36 of the air flow adjusting member 30 is inserted into the bearing hole 22d of the inner register 22, and the other of the pair of rotating shafts 36 is the load applying member mounting portion. It is press-fitted into the bearing hole 41a of the load applying member 40 attached to 22c. As described above, the air flow adjusting member 30 is supported inside the inner register 22 so as to be rotatable around the rotation axis obtained by the pair of rotation shafts 36.

  Next, the inner resistor 22 that supports the air flow adjusting member 30 is inserted into the retainer 21. More specifically, the inner register 22 moves from the opening 21a of the retainer 21 to the rear end side of the retainer 21 until the third protrusion 44 of the load applying member 40 contacts the annular protrusion 21c of the retainer 21. Is inserted towards. At this time, the first protrusion 22e2 provided on the axial arm portion 22e of the inner register 22 elastically presses the inner wall of the retainer 21.

  Finally, the bezel 23 is attached to the opening 21a of the retainer 21 so that the respective locking claws 21d of the retainer 21 are fitted into the respective locking holes 23a. At this time, the inner register 22 is pushed by the bezel 23 toward the rear end side of the retainer 21 until reaching a predetermined position. Further, the bezel 23 restricts the inner register 22 from moving to the front end side from the predetermined position. That is, the bezel 23 restricts the inner register 22 from moving more than a predetermined distance forward of the retainer 21 in the axial direction of the retainer 21.

  When the inner register 22 is pushed toward the rear end side, the third projecting portion 44 of the load applying member 40 is pressed by the annular projecting portion 21c, and the leg portion 43 of the load applying member 40 is formed by the annular projecting portion. It bends (elastically deforms) in a direction away from 21c. As a result, the third protrusion 44 of the load application member 40 elastically presses the annular protrusion 21c. Furthermore, at this time, the second protrusion 22e3 provided on the axial arm portion 22e of the inner register 22 comes into contact with the annular protrusion 21c of the retainer 21.

  Thus, the air blowing apparatus 10 is manufactured by assembling each member. Hereinafter, the operation of the air blowing device 10 will be described with reference to FIGS. 5 to 7 and FIG. 8 which is a schematic diagram.

  As described above, the first protrusion 22e2 of the inner register 22 is configured to elastically press the inner wall of the retainer 21. More specifically, when the inner register 22 is supported inside the retainer 21, the axial arm portion 22e is elastically deformed so as to bend radially inward (rightward in FIG. 5). Yes. The first protrusion 22e2 elastically presses the inner wall of the retainer 21 toward the radially outer side (left direction in FIG. 5) by the force to recover the elastic deformation.

  At this time, according to the force with which the first protrusion 22e2 presses the inner wall of the retainer 21, the first protrusion 22e2 receives a reaction force directed radially inward (rightward in FIG. 5) from the inner wall of the retainer 21. Due to this reaction force, a part of the outer wall surface of the inner register 22 (part CP in FIGS. 5 and 8) that faces the portion where the first protrusion 22 e 2 is provided abuts against the inner wall of the retainer 21.

  When the inner register 22 rotates about the axis within the retainer 21, the first protrusion 22 e 2 and a part CP of the outer wall surface of the inner register 22 are aligned with the inner wall surface of the retainer 21 (more specifically, the front end of the retainer 21. It is possible to move on the inner wall surface while maintaining the state of elastic contact with the inner wall surface of the side portion. As a result, the inner register 22 is prevented from moving relative to the retainer 21 in the radial direction (rattle).

  Further, as described above, the third protrusion 44 of the load applying member 40 is configured to elastically press the annular protrusion 21c. At this time, according to the force with which the third protrusion 44 presses the annular protrusion 21c, the third protrusion 44 receives a reaction force directed forward in the axial direction (upward in FIG. 5) from the annular protrusion 21c. . This reaction force is applied to the inner register 22 via the load applying member 40. That is, the inner register 22 is elastically pressed forward by the load applying member 40 in the axial direction. On the other hand, the inner register 22 is restricted by the bezel 23 so as not to move forward in the axial direction (upward in FIG. 5) from the predetermined position. In addition, as described above, the second protrusion 22e3 of the axial arm portion 22e comes into contact with the annular protrusion 21c on the flat surface 22e4 provided at the tip portion.

  As a result, even when an external force that tilts the axis of the inner register 22 is applied to the inner register 22, a part or all of the inner register 22 moves rearward in the axial direction (downward in FIG. 5). It is prevented. That is, it is possible to prevent the axis of the inner register 22 from being inclined with respect to the axis of the retainer 21. As a result, the air blowing device 10 can prevent the inner register 22 from abnormally contacting the inner wall surface of the retainer 21, so that the normal rotation state can be more reliably maintained.

  On the other hand, as described above, the air flow adjusting member 30 can be rotated around the rotation axis obtained by the pair of rotation shafts 36. More specifically, in the air flow adjusting member 30, the air flow starts from a state in which the opening portion on the front end side of the air blowing device is closed (see FIG. 6, hereinafter also referred to as “fully closed state”). It can be rotated in a range up to a state where air is blown in a direction parallel to the axis of the air blowing device (see FIG. 7, hereinafter also referred to as “fully open state”). When the air flow adjusting member 30 is in the fully closed state, the first air direction adjusting plate 31 alone closes the opening portion on the front end side of the inner register 22.

  Here, an operation load (rotation operation) when the air flow adjusting member 30 is rotated by a frictional force generated between the bearing hole 41a and the rotation shaft 36 press-fitted into the bearing hole 41a. Load). Furthermore, the air flow adjusting member 30 can maintain a state where the rotation is stopped at an arbitrary position in the range from the fully closed state to the fully open state by this frictional force.

  Furthermore, since the air flow adjusting member 30 is supported by the inner register 22, it can rotate around the axis of the retainer 21 together with the inner register 22. Here, as described above, the inner register 22 holds the load applying member 40. Since the third protrusion 44 of the load applying member 40 has a curved surface shape and elastically presses the annular protrusion 21c, when the inner register 22 rotates around its axis, the annular protrusion 21c. It is possible to move so as to get over the protrusions sequentially while maintaining the state in contact with.

  As a result, a rotational operation load and a rotational operation moderation feeling can be obtained. Further, the air flow adjusting member 30 can maintain a state where the rotation is stopped at an arbitrary position.

  The air blowing device 10 configured as described above is used by being mounted on an air outlet of an air conditioner provided in a room such as an automobile. Then, when the air flow adjusting member 30 is in a fully closed state (see FIG. 6), the air flow into the room of an automobile or the like can be blocked. Further, when the upper portion of the first air direction adjusting plate 31 in the fully closed state (in the vicinity of the elliptical concave portion in FIG. 2) is pushed into the air blowing device 10, the air flow adjusting member 30 rotates. If this rotation is continued, the air flow adjusting member 30 reaches a fully open state (see FIG. 7). Furthermore, the air flow adjusting member 30 can be fixed at an arbitrary position in the range from the fully closed state to the fully closed state. In addition, the air flow adjusting member 30 can be rotated around its axis together with the inner resistor 22. By these, the blowing direction of the air flow can be manipulated.

As explained above,
An air blowing device 10 according to an embodiment of the present invention includes:
A first cylindrical body (retainer 21; hereinafter simply referred to as “21”) that forms an air lead-out path, and air that has flowed in from the open portion 21b on the rear end side of the first cylindrical body 21 is the first cylindrical body. A first cylindrical body 21 blown out from an opening 21a on the front end side of the body 21,
A second cylindrical body (inner register 22; hereinafter referred to as being disposed inside the first cylindrical body 21 and rotatably supported around the axis of the first cylindrical body 21 with respect to the first cylindrical body 21). Simply “22”).
A wind direction adjusting plate (air flow adjusting member 30, hereinafter simply referred to as “30”) for adjusting the direction of air blown from the first cylindrical body 21, and disposed inside the second cylindrical body 22. And is supported so as to be non-rotatable about the axis of the second cylinder 22 and rotatable about a rotation axis perpendicular to the axis of the second cylinder 22 with respect to the second cylinder 22. Wind direction adjusting plates (first wind direction adjusting plate 31, second wind direction adjusting plate 32, and third wind direction adjusting plate 33);
With
The second cylindrical body 22 is a first protrusion 22e2 that elastically presses the inner wall of the first cylindrical body 21 toward the radially outer side of the second cylindrical body 22, and the second cylindrical body 22 And at least one first protrusion 22e2 that is formed integrally with and protrudes radially outward of the second cylindrical body 22.

The air blowing device 10 further includes
A load applying member 40 for urging the second cylindrical body 22 forward in the axial direction that is along the axis of the second cylindrical body 22 and toward the front end side 22a of the second cylindrical body 22; A load applying member 40 held by two cylindrical bodies 22 and abutting against the first cylindrical body 21 at a first predetermined position (a part of the annular projection 21c) of the first cylindrical body 21;
A restricting member (bezel 23; hereinafter simply referred to as “23”) for restricting the second cylindrical body 22 from moving forward by a predetermined distance relative to the first cylindrical body 21 in the axial direction;
With
The second cylindrical body 22 projects along the axial line of the second cylindrical body 22 and protrudes rearward in the axial direction, which is the direction toward the rear end side 22b of the second cylindrical body 22. 2 A second protrusion 22e3 that contacts the first cylindrical body 21 at a predetermined location (a part of the annular protrusion 21c), and is a second protrusion formed integrally with the second cylindrical body 22. 22e3.

Furthermore, in this air blowing device 10,
The second cylindrical body 22 includes a flexible portion (axial arm portion 22e; hereinafter simply referred to as “22e”) formed by at least one slit,
The first protrusion 22e2 is provided on the flexible portion 22e.

  The flexible portion is formed such that one end is connected to the second cylindrical body 22 and the other end different from the one end is a free end.

  Further, the first protrusion 22e2 has a curved surface shape.

In addition, in this air blowing device,
The first cylindrical body 21 has an annular protrusion 21c having a plurality of protrusions arranged in an annular shape along the inner wall surface of the first cylindrical body 21,
The load applying member 40 has a curved surface shape that abuts against the annular projection 21c at the first predetermined portion which is a part of the annular projection 21c and elastically presses the annular projection 21c. A third protrusion 44 having
The second protrusion 22e3 has a flat surface 22e4 at the tip of the second protrusion 22e3, and the flat surface 22e4 is at the tip of at least two of the plurality of protrusions of the annular protrusion 21c. It is comprised so that it may contact | abut.

  In the air blowing device configured as described above, the first protrusion prevents the second cylindrical body from moving relative to the first cylindrical body in the radial direction (rattle). Furthermore, even if the shapes of the first cylinder and the second cylinder change due to a change in temperature or the like, the first protrusion can absorb the shape change. In addition, since the axis of the first cylinder and the axis of the second cylinder are prevented from being inclined by the second protrusion, the first cylinder and the second cylinder are prevented from abnormally contacting each other. . Thus, the air blowing device of the present invention can reliably maintain the normal rotation state even without the plurality of support arm portions and the central bearing portion provided in the conventional air blowing device. As a result, since the air blowing device can be easily manufactured, the manufacturing cost of the air blowing device can be reduced.

  The present invention is not limited to the above embodiment, and various modifications can be employed within the scope of the present invention. For example, the air blowing device 10 described above includes a first protrusion 22e2 formed on the second cylindrical body 22 and a part CP of the outer wall surface of the second cylindrical body 22 with respect to the inner wall surface of the first cylindrical body 21. Are configured to contact each other (see FIG. 8). However, the air blowing device of the present invention may be configured such that only the first protrusion 22e2 formed on the second cylindrical body 22 contacts the inner wall surface of the first cylindrical body 21 (see FIG. 9). reference.).

  Further, the inner register 22 employed by the air blowing device 10 described above includes an axial arm portion 22e extending in the “axis” direction as a flexible portion. However, the inner register 22 may include an arm portion extending in the “circumferential” direction instead of the axial arm portion 22e. More specifically, as shown in FIG. 10, the inner register 22 is “one end is connected to the inner register 22 and the other end different from the one end is a free end. In addition, an arm portion 22f ”extending along the circumferential direction of the inner register 22 may be provided (hereinafter, this arm portion is referred to as“ circumferential arm portion 22f ”).

  Here, the inner register 22 can include two circumferential arm portions 22f as with the axial arm portions 22e. Further, the two circumferential arm portions 22f can be formed in thin portions near both ends of the thick portion so as to sandwich the thick portion where the bearing hole 22d is formed. At this time, each of the two circumferential arm portions 22f can be configured such that the end portion on the side close to the thick portion is a free end.

  Further, as shown in FIG. 11A, the circumferential arm portion 22f is provided on the free end side of the circumferential connecting portion 22f1 whose one end portion is connected to the inner register 22 and the circumferential connecting portion 22f1. A first protrusion 22f2 protruding outward in the radial direction of the inner register 22, and a second protrusion 22f3 provided on the free end side of the circumferential connecting portion 22f1 and protruding in a direction along the axial direction of the inner register 22. It can comprise. The first protrusion 22f2 can be configured to have a curved surface shape. In addition, as shown in FIG. 11B, a flat surface 22f4 can be provided at the tip of the second protrusion 22f3.

  Furthermore, as shown in FIG. 12, the inner register 22 may include both an axial arm portion 22e and a circumferential arm portion 22f. In this case, the axial arm portion 22e and the circumferential arm portion 22f are formed in the thin portion near both ends of the thick portion so as to sandwich the thick portion where the bearing hole 22d is formed, as described above. Can do. At this time, the circumferential arm 22f can be configured such that the end near the thick portion is a free end.

  Furthermore, the shape of the “flexible portion” is not limited to the above-described arm shape. For example, as shown in FIG. 13, the inner register 22 includes a flexible portion 22 g in which “both” of one end and the other end different from the one end are connected to the second cylindrical body. May be configured. In addition, for example, as illustrated in FIG. 14, the inner register 22 has one end connected to the second cylindrical body at a predetermined connecting portion, and has an end different from the connecting portion, and the connection You may comprise so that the flexible part 22h where a width | variety may become small as it goes to the said edge part from a part may be provided.

  Further, in the air blowing device 10 described above, “the air flow adjusting member 30 in which the three wind direction adjusting plates and the two connecting members are integrally formed so as not to be separated” is employed. However, the number of wind direction adjusting plates is not limited to three and can be changed to an arbitrary number. In addition, in the air blowing device of the present invention, instead of the air flow adjusting member 30, “at least one independent wind direction adjusting plate and these wind direction adjusting plates are connected to each other and the wind direction adjusting plates are interlocked. And an air flow adjusting member having a connecting member that is rotated.

  Furthermore, the air blowing device of the present invention may be provided with a mechanism capable of obtaining a predetermined moderation feeling when the air flow adjusting member 30 is in a fully closed state (see FIG. 6).

DESCRIPTION OF SYMBOLS 10 ... Air blowing apparatus, 20 ... Cylindrical body, 21 ... Retainer, 22 ... Inner resistor, 22e ... Axial direction arm part, 22e1 ... Axial direction connection part, 22e2 ... 1st protrusion, 22e3 ... 2nd protrusion, 22e4 ... Planar part, 23 ... Bezel, 30 ... Air flow adjusting member, 40 ... Load applying member, 44 ... 3rd Protrusion

Claims (7)

A first cylindrical body that forms an air lead-out path, in which air that has flowed from an opening portion on the rear end side of the first cylindrical body is blown out from an opening portion on the front end side of the first cylindrical body; ,
A second cylinder disposed within the first cylinder and supported rotatably about the axis of the first cylinder with respect to the first cylinder;
A wind direction adjusting plate for adjusting the direction of air blown from the first cylindrical body, and is disposed inside the second cylindrical body and is an axis of the second cylindrical body with respect to the second cylindrical body. A wind direction adjusting plate that is supported so as to be rotatable around a rotation axis that is non-rotatable around and perpendicular to the axis of the second cylindrical body;
In an air blowing device comprising:
The second cylindrical body is a first protrusion that elastically presses the inner wall of the first cylindrical body toward the radially outer side of the second cylindrical body, and is formed integrally with the second cylindrical body. And an air blowing device comprising at least one first protrusion protruding outward in the radial direction of the second cylindrical body. The air blowing device according to claim 1,
A load applying member that urges the second cylindrical body forward in the axial direction that is along the axis of the second cylindrical body and toward the front end side of the second cylindrical body, and is held by the second cylindrical body And a load applying member that contacts the first cylindrical body at a first predetermined location of the first cylindrical body,
A regulating member that regulates movement of the second cylindrical body by a predetermined distance or more forward in the axial direction with respect to the first cylindrical body;
With
The second cylindrical body protrudes toward the rear in the axial direction, which is a direction along the axis of the second cylindrical body and toward the rear end side of the second cylindrical body, at a second predetermined position of the first cylindrical body. An air blowing device configured to include a second protrusion that is in contact with the first cylindrical body and is formed integrally with the second cylindrical body. In the air blowing device according to claim 1 or 2,
The second cylindrical body includes a flexible portion formed by at least one slit,
The first protrusion is an air blowing device provided in the flexible portion. In the air blowing device according to claim 3,
The flexible portion is an air blowing device in which one end is connected to the second cylindrical body and the other end different from the one end is a free end. In the air blowing device according to claim 3,
The flexible portion is an air blowing device in which one end and another end different from the one end are connected to the second cylindrical body. In the air blowing device according to any one of claims 1 to 5,
The air blowing device configured such that the first protrusion has a curved shape. In the air blowing device according to any one of claims 2 to 6,
The first cylindrical body has an annular protrusion including a plurality of protrusions arranged in an annular shape along the inner wall surface of the first cylinder,
The load applying member has a curved surface shape that abuts against the annular projection at the first predetermined position that is a part of the annular projection and elastically presses the annular projection. With protrusions,
The second protrusion has a flat surface at a tip portion of the second protrusion, and the plurality of the annular protrusions at the second predetermined position where the flat surface is a part of the annular protrusion. An air blowing device configured to be in contact with tip ends of at least two of the protrusions.

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