JP2013252832A - Installation method of rotary shaft and bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation method for installing a load applying member as a member for applying a load, a rotary shaft as a member for receiving the load, and a bearing as a member for supporting a member for receiving the load so that the load is applied to the rotary shaft via the load applying member from the bearing by the simplest method.SOLUTION: An installation method includes a process of inserting a rotary shaft into a bearing, a process of adjusting a rotary position of the rotary shaft to the bearing to a first position, and a process of installing the load applying member in at least one of the rotary shaft and the bearing, and executes a step of adjusting the rotary position of the rotary shaft to the bearing to a second position (the rotary position for applying the load to the rotary shaft via the load applying member from the bearing when the load applying member does not enter a recessed part), after executing a step of not executing the adjusting process after executing both the inserting process and the installing process.

Description

  The present invention provides a rotating shaft that can rotate around an axis, a bearing that can support the rotating shaft, and a load applying member that can apply a load to the rotating shaft, and the load rotates from the bearing through the load applying member. The present invention relates to an assembling method for assembling so as to be given to a shaft.

  2. Description of the Related Art Conventionally, an air blowing device that controls the flow rate and the flow direction of air for heating and cooling supplied into the room has been proposed for the purpose of adjusting the environment in a room such as an automobile. One conventional air blowing device (hereinafter also referred to as “conventional device”) includes an adjustment plate for adjusting the flow rate of air blown from the air blowing device, and a rotation plate for rotating the adjustment plate. And an operation knob. In the conventional device, the projection provided on the operation knob and the elastic locking piece provided on the casing of the air blowing device come into contact with and separate from each other as the operation knob is operated. It is possible to obtain a moderation feeling when the operation is performed (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 6-79612

  In the conventional device, when the convex part of the operation knob and the locking piece of the housing are in contact with each other, the convex part presses the locking piece, so that the locking piece elastically deforms, and the reaction caused by the elastic deformation occurs. A load resulting from the force is applied from the locking piece to the convex portion.

  On the other hand, in the conventional device, when the convex portion of the operation knob and the locking piece of the housing are separated from each other, the locking piece does not elastically deform, so that no load is applied from the locking piece to the convex portion. . Therefore, when the operation knob is operated, an operation sensation according to the load may occur when the convex portion and the locking piece are in contact with each other. It will not occur. In other words, the undulation of the operation sensation is intense between the operation sensation when the convex portion and the locking piece are in contact with each other and the operation sensation when they are separated from each other. However, from the viewpoint of comfortably operating the operation knob, it is desirable that the undulation of the operation feeling is not excessively large.

  As understood from the above description, the undulation of the operational feeling in the conventional device is the same as the load applied to the convex portion when the convex portion and the locking piece are in contact with each other and when the convex portion is separated from each other. This is due to the difference between the load and the load. Therefore, for example, if the air blowing device is configured so that a load is always applied to the operation knob (for example, the convex portion and the locking piece in the conventional device are always in contact), the undulation of the operation feeling is reduced. I think it can be done.

  However, when the air blowing device is configured so that a load is always applied to the operation knob, in the process of manufacturing the air blowing device, generally, a state in which a load is applied to the operation knob is maintained (for example, in the past) Various members need to be assembled (while maintaining the state in which the protrusions and the locking pieces in the apparatus come into contact with each other and the locking pieces are elastically deformed). Producing an air blowing device in this way generally requires a complicated process for assembling various members to the extent that it is necessary to continue to apply a load (or continue to counter the reaction force corresponding to the load). Become.

  Furthermore, as understood from the above description, the present invention is not limited to the case of assembling the members constituting the air blowing device, and various members (e.g., members for applying a load, aiming at a state in which a predetermined load is always generated) It is generally considered difficult to assemble a member that receives a load, a member that supports a member that receives a load, and the like.

  In view of the above problems, an object of the present invention is to make a load applying member as a member that applies a load, a rotating shaft as a member that receives a load, and a bearing as a member that supports the member that receives the load as simple as possible. An object of the present invention is to provide an assembling method in which a load is applied from a bearing to a rotating shaft via a load applying member.

An assembling method according to the present invention for solving the above problems is as follows.
A "rotating shaft" rotatable around an axis, a "bearing" capable of supporting the rotating shaft, and a "load applying member" capable of applying a load to the rotating shaft. This is an assembling method for assembling so as to be imparted to the rotating shaft via a load imparting member.

  In other words, the assembling method according to the present invention is such that the load is always applied from the bearing to the rotating shaft through the load applying member in a state where the rotating shaft, the bearing and the load applying member are assembled to each other (final). As shown, this is an assembling method for assembling the rotating shaft, the bearing, and the load applying member.

  The “rotating shaft” may be configured to be rotatable around a predetermined axis, and the shape and size thereof are not particularly limited. For example, as a rotation axis, when the rotation axis is cut by a plane perpendicular to a predetermined axis, the cross-sectional shape of the rotation axis is a circle, an ellipse, a polygon, and a polygon with rounded corners A rotating shaft that is either of the following may be employed.

  The “bearing” may be configured so as to be able to support a rotatable rotating shaft (that is, so as to rotatably support the rotating shaft), and the structure thereof is not particularly limited. For example, a sliding bearing or a rolling bearing can be adopted as the bearing.

  The “load applying member” is configured so that a load can be applied to the rotating shaft (more specifically, when the rotating shaft, the bearing, and the load applying member are assembled to each other, the same load is applied from the bearing. The shape and material are not particularly limited as long as it is configured so that it can be applied to the rotating shaft via the applying member. For example, an elastically deformable member such as a member constituted by a leaf spring and a member constituted by a coiled spring can be employed as the load applying member.

  The assembly method of the present invention includes “first step” and “second step” in this order.

Specifically, the assembling method of the present invention includes, as a first step,
(A) an insertion step of inserting the rotating shaft into the bearing;
(B) An adjustment step of adjusting the rotation position of the rotation shaft with respect to the bearing to the “first position”. Here, the first position is “if the load applying member is attached to at least one of the rotating shaft and the bearing, at least a part of the load applying member is at least one of the rotating shaft and the bearing. A rotation position where the load is not applied to the rotating shaft when at least a part of the load applying member is in the recess.
(C) an attaching step of attaching the load applying member to at least one of the rotating shaft and the bearing;
And the step in which the adjustment step (b) is not performed after both the insertion step (a) and the attachment step (c) are performed.

Furthermore, the assembling method of the present invention includes, as a second step,
After performing the first step, the step of adjusting the rotational position of the rotary shaft with respect to the bearing to the “second position” is performed. Here, the second position is “a rotational position where the load is applied from the bearing to the rotating shaft via the load applying member when the load applying member does not enter the concave portion”. .

According to the above configuration, when the first step is completed, the rotating shaft is inserted into the bearing (insertion process) while the load applying member is attached to at least one of the rotating shaft and the bearing (attachment). Step), a load is not applied to the rotating shaft (adjustment step).
More specifically, when the load applying member is attached to at least one of the rotating shaft and the bearing during the first step (attachment process), no load is applied to the rotating shaft (in other words, As a result, there is no reaction force corresponding to the load from the rotating shaft to the load applying member), so the load applying member rotates very easily compared to when the load applying member is attached while applying a load to the rotating shaft. It can be attached to at least one of a shaft and a bearing.

  Furthermore, according to the above configuration, after the rotating shaft, the bearing, and the load applying member are assembled in the first step (as described above, no load is applied to the rotating shaft at the stage where the first step is completed. ), The load is applied to the rotating shaft by the second step. That is, when the second step is completed, a load is always applied from the load applying member to the rotating shaft.

  As a result, the assembling method of the present invention can easily assemble the rotating shaft, the bearing, and the load applying member, but always applies a load to the rotating shaft in the final state in which they are assembled to each other. Can be realized. That is, according to the assembling method of the present invention, the load applying member, the rotating shaft and the bearing are assembled by a method as simple as possible so that the load is applied from the bearing to the rotating shaft through the load applying member. Can do.

  Furthermore, as understood from the above description, the assembly method of the present invention is not limited to the case where a member constituting a specific device (for example, an air blowing device such as a conventional device) is assembled, and a predetermined load is applied. The present invention can be applied to the case where the rotating shaft, the bearing, and the load applying member are assembled to aim at a state that is always generated.

  By the way, the “first step” is a step “including” the (a) insertion step, (b) adjustment step, and (c) attachment step (however, the adjustment step after both the insertion step and the attachment step are performed). Is not performed.) That is, in the first step, the insertion process, the adjustment process, and the attachment process are not necessarily performed in this order (in order of a, b, and c).

Specifically, in the first step,
(A) Each step may be performed in the order of the insertion step, adjustment step, and attachment step (abc order),
(B) Each step may be performed in the order of the adjustment step, the insertion step, and the attachment step (bac order),
(C) Each step may be performed in the order of the adjustment step, the attachment step, and the insertion step (bca order),
(D) Each step may be performed in the order of the attachment step, the adjustment step, and the insertion step (in cba order).

  That is, in the first step, if each step is performed in an order that can realize a state in which no load is applied from the load applying member to the rotating shaft (that is, no reaction force is generated in the load applying member). Good.

  Here, the concave portion into which at least a part of the load applying member enters in the first step may be provided in “at least one of the rotating shaft and the bearing”. The number and shape thereof are not particularly limited. However, as understood from the fact that the positional relationship between the recess and the load applying member changes as the rotational position of the rotary shaft is adjusted (changed) from the first position to the second position, the load applying member and the load The concave portion into which at least a part of the applying member enters corresponds to each other (that is, if one is provided on the rotating shaft, the corresponding other is provided on the bearing, and if one is provided on the bearing, the corresponding other is the rotating shaft. If one is provided on the rotary shaft and the bearing, the corresponding other is provided on the bearing and the rotary shaft).

  Specifically, when the load applying member is provided only on the bearing, the concave portion may be provided on the rotating shaft so as to correspond to the load applying member. On the other hand, when the load applying member is provided only on the rotating shaft, the recess may be provided in the bearing so as to correspond to the load applying member. Furthermore, when the load applying member is provided on both the bearing and the rotating shaft, the recess may be provided on both the rotating shaft and the bearing so as to correspond to the load applying member.

  Therefore, for example, when the load applying member is provided in the bearing and the recess is provided in the rotating shaft, when the rotating shaft is rotated (for example, when the rotating position is changed from the first position to the second position). The position of the recess with respect to the load applying member changes as the recess moves with the rotation of the rotating shaft. On the contrary, when the load applying member is provided on the rotating shaft and the concave portion is provided on the bearing, when the rotating shaft is rotated, the load applying member moves along with the rotation of the rotating shaft. The position of the recess relative to will change.

  The “recess” is a portion (or a space formed by being recessed in the same object so as to be recessed toward the inside of the object (at least one of the rotation shaft and the bearing) in which the recess is provided. -Area), and the shape and size thereof are not particularly limited. For example, as a recess, a part of a surface of a target where the recess is provided is recessed to a depth that does not penetrate the target (that is, has a shape of a hole in which one end is closed and the other end is opened), or the same. A portion that is recessed so that a part of the surface of the object penetrates the object (that is, has a shape of a hole that is open at both ends) may be employed.

  The above “at least a part of the load applying member enters the recess” means that the portion formed in the same object so as to be recessed toward the inside of the object in which the recess is provided (or by being recessed as such. It represents that at least a part of the load applying member exists in the formed space / region.

  In the assembling method of the present invention, it is only necessary that the second step is performed after the first step. As long as the order in which these steps are performed is maintained, the first step and the second step are performed. Other steps other than these steps may be included. That is, for example, (i) one or more other steps may be performed before the first step and the second step are performed, and (ii) between the first step and the second step. One or more other steps may be performed, and (iii) one or more other steps may be performed after both the first step and the second step are performed, and (iv) ) One or more other steps may be performed to combine two or more of i-iii.

  Here, when the load applied to the rotation shaft is examined in more detail, after the rotation position of the rotation shaft is changed to the second position in the second step, the rotation position of the rotation shaft is returned to the first position again. As long as the rotational position of the rotary shaft is adjusted within a range where it does not return, a state in which a load is always applied from the load applying member to the rotary shaft is maintained.

However, from the viewpoint of more positively maintaining a state where a load is always applied to the rotating shaft, in the assembly method of the present invention,
When the rotation position of the rotation shaft is changed from the first position to the second position in the second step, “the rotation position of the rotation shaft is prohibited from returning from the second position to the first position. As described above, at least one of the rotating shaft, the bearing, and the load applying member may be configured.

  The above-mentioned “the rotational position of the rotational shaft is prohibited” means that the rotational position of the rotational shaft is substantially prevented from changing from the second position to the first position. The specific method for realizing the prohibition is not particularly limited. For example, as a method of realizing such a change prohibition, (i) the rotation shaft can be rotated so that the rotation position of the rotation shaft is physically prohibited from changing from the second position to the first position. (Ii) Even if the rotational position of the rotational shaft temporarily changes from the second position to the first position, the rotational position is forced thereafter. And a method of providing a specific structure for returning to the second position from the first position on the rotating shaft and the bearing, and (iii) without rotating the rotating position of the rotating shaft from the second position to the first position. In such a manner, it is possible to employ a method of calling attention to the operator of the rotary shaft.

  An example of a specific method for realizing that “the rotational position of the rotating shaft is prohibited” will be described. In the assembling method of the present invention, the rotating shaft and the rotating shaft and the following five items are satisfied. A bearing may be configured.

A disk-shaped member that rotates coaxially with the rotation shaft and cannot rotate relative to the rotation shaft, the outer circumferential surface of the disk-shaped member being directed radially outward of the disk-shaped member; A disk-shaped member is provided that includes a protruding first convex portion and a hollow portion provided in the vicinity of the first convex portion.
-The 2nd convex part which protruded toward the radial inside of the said disk-shaped member is provided in the said bearing.
-When the first surface, which is a part of the surface constituting the first convex portion, and the second convex portion are in contact, the first convex portion is movable toward the cavity portion, When the second surface which is the other part of the surface constituting one convex portion and the second convex portion are in contact with each other, the first convex portion is not movable toward the hollow portion.
When the rotational position of the rotation shaft is changed from the first position to the second position, the first surface of the first convex portion and the second convex portion come into contact with each other, and the first convex portion By being movable toward the hollow portion, the first convex portion can pass through the position where the second convex portion is provided.
When the rotational position of the rotation shaft is changed from the second position to the first position, the second surface of the first convex portion and the second convex portion come into contact with each other, and the first convex portion is By being immovable toward the hollow portion, the first convex portion cannot pass through the position where the second convex portion is provided.

  When the assembling method of the present invention is applied to the rotating shaft and the bearing configured to satisfy the above-described items, the rotating position of the rotating shaft can advance from the first position to the second position. However, since the first convex portion can pass through the position where the second convex portion is provided, once the rotational position changes to the second position, it can return from the second position to the first position again. It is impossible (because the first convex portion cannot pass the position where the second convex portion is provided).

  As described above, the first convex portion and the second convex portion in the above configuration prohibit the rotational position of the rotating shaft from returning from the second position to the first position again.

More specifically about the disk-shaped member described above,
The disc-shaped member may be configured such that at least a part of the hollow portion exists between a center of the disc-shaped member and the first convex portion.

  Further, the disk-shaped member may be configured to have a curved shape so that the hollow portion is along the outer peripheral surface of the disk-shaped member.

  If the disk-shaped member is configured to have one or both of the above-described configurations, the first convex portion can be more easily formed into the hollow portion when the rotational position of the rotation shaft is changed from the first position to the second position. It will be possible to move towards. Therefore, if the said structure is employ | adopted about a disk shaped member, a rotating shaft, a bearing, and a load provision member can be assembled | attached still more easily.

By the way, the “load” applied from the load applying member to the rotating shaft may be a load for achieving various purposes. For example, in the assembly method of the present invention,
The load may be a load for suppressing rotation of the rotating shaft.

  Here, as the “load for suppressing the rotation of the rotation shaft”, for example, a load for generating a force that prevents the rotation of the rotation shaft, and the rotation shaft is stationary. Sometimes, a load for generating a force that keeps the rotation stationary is mentioned.

  Further, when at least one of the rotating shaft and the bearing is provided with an engaging portion that can engage with the load applying member, the load causes the load applying member to engage with the engaging portion. Load.

  Here, as the “load for engaging the load applying member and the engaging portion”, for example, when the load applying member approaches the engaging portion, a force for pulling the load applying member to the engaging portion is generated. For example, and a load for generating a force that prevents the load applying member from separating from the engaging portion after the load applying member and the engaging portion are once engaged.

As described above, the assembling method of the present invention can be applied when assembling various rotating shafts, bearings, and load applying members. For example, in the assembly method of the present invention,
When the assembly method is applied to the assembly of an air blowing device capable of blowing air in a predetermined flow rate and flow direction,
The bearing is a part of a housing of the air blowing device, and the rotating shaft is a part of a member for adjusting at least one of a flow rate and a flow direction of the air blown from the air blowing device. Can be applied.

  As a result, a load is always applied from the load applying member to the member (rotating shaft) that adjusts the flow rate of air provided in the housing (bearing) of the air blowing device, and the above-described undulation of the operational feeling can be appropriately reduced. It will be.

  As described above, according to the assembling method of the present invention, the rotating shaft, the bearing, and the load applying member are applied to the rotating shaft from the bearing through the load applying member by the simplest possible method. An assembling method for assembling can be provided.

It is a schematic perspective view when an example of the air blowing apparatus manufactured by the assembling method of the present invention is seen from the front direction. It is the schematic when the air blowing apparatus of FIG. 1 is seen from the side surface direction. It is the schematic of the air flow rate adjustment dial employ | adopted as the air blowing apparatus of FIG. It is a schematic diagram which shows a mode that the convex part of the air flow rate adjustment dial employ | adopted as the air blowing apparatus of FIG. 1 and the convex part of the housing | casing of the air blowing apparatus contact. It is a schematic diagram which shows a mode that the convex part of the air flow rate adjustment dial employ | adopted as the air blowing apparatus of FIG. 1 and the convex part of the housing | casing of the air blowing apparatus contact. It is a schematic diagram which shows a mode that the air blowing apparatus of FIG. 1 is manufactured by the assembly | attachment method of this invention. It is a schematic diagram which shows a mode that the air blowing apparatus of FIG. 1 is manufactured by the assembly | attachment method of this invention. It is a schematic diagram which shows a mode that the air blowing apparatus of FIG. 1 is manufactured by the assembly | attachment method of this invention.

  Hereinafter, an embodiment in which the assembling method of the present invention is applied to manufacture of an air blowing device will be described with reference to the drawings. As described above, the assembling method of the present invention is not necessarily applied only to the assembly of the air blowing device, and can be applied when assembling various rotating shafts and bearings. That is, the following description in this embodiment is an example of an embodiment to which the assembling method of the present invention is applied.

<Outline of device>
First, an outline of an air blowing device manufactured by applying the assembling method of the present invention will be described with reference to FIGS.

  An air blowing device 10 shown in FIG. 1 is a vehicle air blowing device manufactured by applying the assembling method of the present invention. The air blowing device 10 includes an air flow rate adjustment dial 11, a casing 21, a plurality of wind direction adjustment plates 31, a wind direction adjustment plate operation knob 41, and a bezel 51.

  The air flow rate adjustment dial 11 is a disk-shaped member having a disk shape (see, for example, FIG. 3), and the rotating shaft 12 of the air flow rate adjustment dial 11 is a housing 21 as shown in FIG. It is inserted in the bearing 22 provided in. Thereby, the air flow rate adjustment dial 11 can be rotated around a predetermined axis (around the axis perpendicular to the paper surface in FIG. 2 through the center of the rotary shaft 12). Here, a load applying spring 61 capable of applying a load to the rotating shaft 12 is attached to the bearing 22, and the same load is applied to the rotating shaft 12 from the bearing 22 via the load applying spring 61. It has become.

  Here, the load applying spring 61 is a metal leaf spring having a substantially square shape (see, for example, FIGS. 5 to 7). More specifically, as shown in FIG. 5, the load applying spring 61 is a tip portion located at a central portion of the load applying spring 61 (a peripheral portion of the curved end of the leaf spring curved in a substantially square shape). 61a, a first arm portion 61b extending from the tip end portion 61a in the first direction, and a second arm portion 61c extending from the tip end portion 61a in the second direction. The first arm portion 61b and the second arm portion 61c are connected at the distal end portion 61a so as to form a predetermined angle θ around the distal end portion 61a. In other words, the tip portion 61a, the first arm portion 61b, and the second arm portion 61c are formed by bending one metal plate so as to form an angle θ. The end of the first arm portion 61b on the side away from the distal end portion 61a is curved in a direction opposite to the direction in which the distal end portion 61a protrudes (substantially a square-shaped convex direction). Similarly, the end portion of the second arm portion 61c on the side away from the tip end portion 61a is also curved in the direction opposite to the direction in which the tip end portion 61a protrudes.

  As shown in the partial enlarged view of the periphery of the distal end portion 61a in FIG. 5, the distal end portion 61a of the load applying spring 61 has the most distal end portion (the distal end portion of the curved end of the leaf spring) as the first arm portion 61a. And the second arm portion 61b has a convex shape that projects in the same direction as the direction in which the load applying spring 61 projects (substantially a U-shaped convex direction) so as to form an angle γ that is smaller than the angle θ formed by the second arm portion 61b. doing.

  The load applying spring 61 has an end portion on the side away from the distal end portion 61a of the first arm portion 61a and the same end portion of the second arm portion 61b provided in the casing 21 (part of the casing 21). ) It is attached to the bearing 22 so as to be connected to a predetermined position of the bearing 22. The load applying spring 61 has a direction in which the load applying spring 61 protrudes (substantially in a convex shape) when the tip end portion 61a contacts the outer peripheral surface of the rotating shaft 12 (details will be described later). Is elastically deformed in the opposite direction, and a load caused by a reaction force due to the elastic deformation is applied to the outer peripheral surface of the rotating shaft 12. In this way, a predetermined load is applied to the rotary shaft 12 from the bearing 22 via the load applying spring 61.

  Referring to FIG. 1 again, the housing 21 has a hollow, substantially prismatic shape with a front end portion 23 and a rear end portion 24 opened. The housing | casing 21 forms the flow path 25 for allowing air to pass through. And the air which flowed into the housing | casing 21 from the rear-end part 24 passes this flow path 25, and is blown off from the front-end part 23 (refer the white arrow A of FIG. 1, FIG. 2). .

  Each of the plurality of wind direction adjusting plates 31 has a substantially rectangular plate shape. The plurality of wind direction adjusting plates 31 are provided in the vicinity of the front end portion 23 of the housing 21. Each of the plurality of wind direction adjusting plates 31 is supported by the casing 21 so as to be rotatable around an axis perpendicular to the axis of the casing 21. The plurality of wind direction adjusting plates 31 are connected to each other by a connecting member (not shown). When a wind direction adjusting plate operation knob 41 provided on one of the plurality of wind direction adjusting plates 31 is operated, the plurality of wind direction adjusting plates 31 are operated. All of the plates 31 are interlocked to rotate around their respective rotation axes. Thus, the flow direction of the air blown out from the air blowing device 10 is adjusted by rotating the plurality of wind direction adjusting plates 31.

  Next, a mechanism for adjusting the flow rate of air blown from the air blowing device 10 by operating the air flow rate adjustment dial 11 will be described.

  As shown in FIG. 3, the air flow rate adjustment dial 11 and the rotating shaft 12 are integrally formed. As a result, the air flow rate adjustment dial 11 rotates coaxially with the rotary shaft 12 and cannot rotate relative to the rotary shaft 12. The air flow rate adjustment dial 11 is provided in the vicinity of a convex portion 13 (hereinafter also referred to as a “first convex portion 13”) that protrudes radially outward from the outer peripheral surface thereof, and the first convex portion 13. The cavity 14, the connection port 15 to which a link member 26 described later is connected, a recess 16 (details will be described later) provided on the outer peripheral surface thereof, and a load applied when the rotary shaft 12 is operated. It has a groove-like engaging portion 17 with which the spring 61 is engaged.

  The hollow portion 14 is a through hole provided so as to penetrate the air flow rate adjustment dial 11 in a direction perpendicular to the paper surface in FIG. More specifically, the cavity 14 is configured such that at least a part of the cavity 14 exists between the center of the air flow rate adjustment dial 11 and the first protrusion 13. Furthermore, the cavity 14 has a curved shape along the outer peripheral surface of the air flow rate adjustment dial 11.

  Referring to FIG. 2 again, as shown by the arrow in FIG. 2, when the air flow rate adjustment dial 11 is rotated (rotated clockwise in the drawing), the rotary shaft 12 also rotates in the same direction. . The rotation of the air flow rate adjustment dial 11 is provided inside the casing 21 (air flow path 25) via a link member 26 that is rotatably connected to the connection port 15 of the air flow rate adjustment dial 11. This is transmitted to the rotary shaft 28 connected to the flow rate adjusting plate 27. As a result, the flow rate adjusting plate 27 rotates. When the flow rate adjusting plate 27 rotates, the effective sectional area of the flow path 25 changes according to the rotation angle, and the flow rate of air that can pass through the flow path 25 changes.

  Thus, the air blowing device 10 has a mechanism that adjusts the flow rate of air blown from the air blowing device 10 by operating (rotating) the air flow rate adjusting dial 11.

  On the other hand, the casing 21 of the air blowing device 10 is provided with a convex portion 29 (hereinafter also referred to as “second convex portion 29”) that protrudes inward in the radial direction of the air flow rate adjustment dial 11. Yes. As will be described later, the second convex portion 29 is configured to limit the rotatable range of the air flow rate adjustment dial 11 by contacting the first convex portion 13 of the air flow rate adjustment dial 11.

  If the relationship between the 1st convex part 13 and the 2nd convex part 29 is described in detail, the 1st convex part 13 will have the 1st surface 13a and the 2nd surface 13b, as FIG. 3 shows. The first convex portion 13 has a substantially triangular cross-section when cut by a plane perpendicular to the axial direction of the air flow rate adjusting dial 11 by the first surface 13a and the second surface 13b.

  Then, as shown in FIG. 4A, the first convex portion 13 is movable toward the cavity portion 14 when the first surface 13 a and the second convex portion 29 are in contact with each other. (For example, as indicated by an arrow in the figure, the first convex portion 13 and its peripheral members can be deformed so as to be depressed toward the inside of the cavity portion 14). . On the other hand, as shown in FIG. 4B, the first convex portion 13 cannot move toward the cavity portion 14 when the second surface 13 b and the convex portion 29 are in contact with each other. It is configured.

  The above is the outline of the air blowing device 10 manufactured by applying the assembling method of the present invention.

<Assembly method>
Next, an assembly method of the present invention applied to the air blowing device 10 (hereinafter also referred to as “method example”) will be described with reference to FIGS.

  5 to 8 show respective steps in which the rotating shaft 12 of the air flow rate adjusting dial 11, the bearing 22 of the housing 21, and the load applying spring 61 are assembled. More specifically, FIG. 5 shows “a step of inserting the rotary shaft 12 into the bearing 22” and “a step of adjusting the rotational position of the rotary shaft 12 with respect to the bearing 22 to a predetermined position (first position described later)”. 6 shows a “step of attaching the load applying spring 61 to the bearing 22”, and FIG. 7 shows a “step of adjusting the rotational position of the rotary shaft 12 relative to the bearing 22 to a predetermined position (second position described later)”. , Respectively.

  First, as shown by the arrow in FIG. 5, the rotary shaft 12 of the air flow rate adjustment dial 11 is inserted into the bearing 22 of the housing 21. At this time, the rotational position of the rotating shaft 12 is “if the load applying spring 61 is attached to the bearing 22 (housing 21), at least a part of the load applying spring 61 is provided in the recess 16 provided in the rotating shaft 12. Rotational position (hereinafter also referred to as “first position”) ”. The recess 16 is configured such that no load is applied to the rotary shaft 12 when at least a part of the load applying spring 61 is in the recess 16. For example, the recess 16 is configured to have a shape, depth, and the like that the load applying spring 61 cannot contact the recess 16 in a state where the load applying spring 61 is attached to the bearing 22.

  The rotational position of the rotary shaft 12 may be adjusted to the first position before the rotary shaft 12 is inserted into the bearing 22, and is adjusted to the first position after the rotary shaft 12 is inserted into the bearing 22. Alternatively, the rotary shaft 12 may be adjusted to the first position while being inserted into the bearing 22.

  Next, as shown by the arrow in FIG. 6, the load applying spring 61 is attached to the bearing 22. At this time, a part of the load applying spring 61 (the front end portion 61 a facing the rotating shaft 12 and its peripheral portion) enters the recess 16. Therefore, when the load application spring 61 is attached to the bearing 22, no load is applied to the rotary shaft 12. In other words, at this time, the load applying spring 61 is not subjected to a reaction force from the rotating shaft 12. As a result, the load applying spring 61 can be attached to the bearing 22 very easily as compared with the case where the load applying spring 61 is attached to the bearing 22 while applying a load to the rotating shaft 12.

  Next, as indicated by an arrow in FIG. 7, the rotational position of the rotary shaft 12 is adjusted to “a rotational position where the load applying spring 61 does not enter the recess 16 (hereinafter also referred to as“ second position ”)”. Is done. The second position is a rotational position where the load is applied from the bearing 22 to the rotary shaft 12 through the load application spring 61 when the load application spring 61 does not enter the recess 16. More specifically, when the rotation position of the rotating shaft 12 is changed (rotated) from the first position to the second position, the tip end portion 61a of the load applying spring 61 and its peripheral portion come out of the recess 16. The tip end portion 61 a of the load applying spring 61 is in contact with the outer peripheral surface of the rotating shaft 12. As a result, a load is applied to the rotating shaft 12 from the load applying spring 61.

  As a result, while the rotary shaft 12, the bearing 22 and the load applying spring 61 are easily assembled, in the final state in which they are assembled with each other (more strictly, the rotational position of the rotary shaft 12 is the first position). As long as the rotational position of the rotary shaft 12 is adjusted within a range where it does not return to the position again, a state in which a load is applied to the rotary shaft 12 is realized. That is, according to the assembling method of the present invention applied to the manufacture of the air blowing device 10, the load is applied from the bearing 22 to the rotating shaft 12, the bearing 22, and the load applying spring 61 by a method as simple as possible. It can be assembled so as to be applied to the rotary shaft 12 via the spring 61.

  Further, when the rotational position of the rotary shaft 12 is changed from the first position to the second position, the “first surface 13 a” of the first convex portion 13 of the air flow rate adjustment dial 11 and the second convex portion 29 come into contact with each other. It will be. At this time, the 1st convex part 13 passes the position in which the 2nd convex part 29 was provided, when the 1st convex part 13 moves toward the cavity part 14. FIG. That is, the air flow rate adjustment dial 11 rotates clockwise in FIG. 7 so that the first convex portion 13 gets over the second convex portion 29.

  However, once the rotational position of the rotary shaft 12 is changed from the first position to the second position, even if the rotational position of the rotary shaft 12 attempts to return from the second position to the first position, “ The 2nd surface 13b "and the 2nd convex part 29 will contact. At this time, since the 1st convex part 13 cannot move toward the cavity part 14, the 1st convex part 13 cannot pass the position in which the 2nd convex part 29 was provided. That is, the 1st convex part 13 cannot get over the 2nd convex part 29, and the air flow rate adjustment dial 11 is counterin FIG. 7 (rather than the position where the 1st convex part 13 and the 2nd convex part 29 contact). Cannot rotate clockwise.

  That is, the rotation shaft 12 of the air flow rate adjustment dial 11 and the bearing 22 of the housing 21 rotate once the rotation position of the rotation shaft 12 is changed from the first position to the second position (step shown in FIG. 7). The rotational position of the shaft 12 is configured to be prohibited from returning again from the second position to the first position. Thereby, the state where a load is always applied to the rotating shaft is more positively maintained.

  More specifically, the load applied to the rotating shaft 12 will be described. When the rotational position of the rotating shaft 12 is changed from the first position to the second position, the tip end portion 61a of the load applying spring 61 is the outer periphery of the rotating shaft 12. While being in contact with the surface, the load applying spring 61 is elastically deformed, and a load corresponding to the degree of the elastic deformation is applied to the outer peripheral surface of the rotating shaft 12. Due to this load, a frictional force (static frictional force, dynamic frictional force) can be generated between the outer peripheral surface of the rotating shaft 12 and the tip end portion 61 a of the load applying spring 61. That is, it can be said that this load is a load for suppressing the rotation of the rotating shaft 12. In addition, by suppressing the rotation of the rotating shaft 12 in this way, an operation feeling (operation load) when operating the air flow adjustment dial 11 can be generated.

  On the other hand, when the rotating shaft 12 is rotated and approaches the engaging portion 17 (groove-shaped portion) on the outer peripheral surface of the rotating shaft 12, the load applying spring 61 is deformed in such a direction that the elastic deformation is eliminated, and the tip portion 61a. Enters the engaging portion 17. As a result, the tip end portion 61 a of the load applying spring 61 is engaged with the engaging portion 17. That is, it can be said that the load is a load for engaging the load applying spring 61 and the engaging portion 17. In addition, by engaging the load applying spring 61 with the engaging portion 17 in this way, a feeling of moderation when operating the air flow adjustment dial 11 can be generated.

  As explained above, it is a part of the bearing 22 which is a part of the housing 21 of the air blowing device 10 and the air flow adjusting dial 11 for adjusting the flow rate of the air blown from the air blowing device 10. When the rotating shaft 12 and the load applying spring 61 are assembled, the assembling method of the present invention can be applied. Thereby, while it is possible to easily assemble the rotary shaft 12, the bearing 22, and the load application spring 61, a state in which a load is always applied to the rotary shaft 12 in a final state in which they are assembled to each other. Can be realized. That is, these members can be assembled by a method as simple as possible so that a load is applied from the bearing 22 to the rotary shaft 12 via the load applying spring 61.

<Summary of Embodiment>
As described with reference to FIGS. 1 to 7, the assembly method (method embodiment) of the present invention applied to the manufacture of the air blowing device 10 is as follows.
A rotating shaft 12 that can rotate around an axis, a bearing 22 that can support the rotating shaft 12, and a load applying member 61 that can apply a load to the rotating shaft 12. This is an assembling method for assembling so as to be applied to the rotary shaft 12 via a load applying member 61.

Specifically, the method embodiment is:
An insertion step of inserting the rotating shaft 12 into the bearing 22 (see FIG. 5);
An adjustment step of adjusting the rotational position of the rotary shaft 12 with respect to the bearing 22 to a first position, wherein the load applying member 61 is attached to at least one of the rotary shaft 12 and the bearing 22. Then, at least a part of the load applying member 61 is a recess 16 provided in at least one of the rotating shaft 12 and the bearing 22, and at least a part of the load applying member 61 enters the recess 16. An adjusting step, which is a rotational position that will enter the recess 16 where the load is not applied to the rotary shaft 12 (FIG. 5),
An attaching step of attaching the load applying member 61 to at least one of the rotating shaft 12 and the bearing 22 (FIG. 6);
And after performing the first step in which the adjustment step is not performed after both the insertion step and the attachment step are performed,
A second step of adjusting the rotational position of the rotary shaft 12 with respect to the bearing 22 to a second position, wherein the load is applied when the load applying member 61 does not enter the recess 16; A second step, which is the rotational position to be applied to the rotary shaft 12 from the bearing 22 through the load applying member 61, is performed (FIG. 7).

Furthermore, in the example method:
When the rotational position of the rotary shaft 12 is changed from the first position to the second position in the second step (FIG. 7), the rotational position of the rotary shaft 12 is changed from the second position to the first position. At least one of the rotating shaft 12, the bearing 22, and the load applying member 61 is configured so as to be prohibited from returning to (Figs. 3, 4A, and 4B).

More specifically, for each member of the air blowing device 10 to which the embodiment method is applied,
A disk-shaped member 11 that rotates on the rotating shaft 12 coaxially with the rotating shaft 12 and cannot rotate relative to the rotating shaft 12, and the diameter of the disk-shaped member 11 from the outer peripheral surface of the disk-shaped member 11. A disc-shaped member 11 including a first convex portion 13 projecting outward in the direction and a hollow portion 14 provided in the vicinity of the first convex portion 13;
The bearing 22 is provided with a second convex portion 29 projecting inward in the radial direction of the disk-shaped member 11,
When the first surface 13a, which is a part of the surface constituting the first convex portion 13, and the second convex portion 29 are in contact, the first convex portion 13 is movable toward the cavity portion 14. Yes (FIG. 4A), when the second surface 13b, which is the other part of the surface constituting the first convex portion 13, and the second convex portion 29 are in contact with each other, the first convex portion 13 becomes the hollow portion 14. Incapable of moving toward (FIG. 4B),
When the rotational position of the rotary shaft 12 is changed from the first position to the second position, the first surface 13a of the first convex portion 13 and the second convex portion 29 come into contact with each other. Since the convex portion 13 is movable toward the hollow portion 14, the first convex portion 13 can pass through the position where the second convex portion 29 is provided (FIG. 7).
When the rotational position of the rotary shaft 12 is changed from the second position to the first position, the second surface 13b of the first convex portion 13 and the second convex portion 29 come into contact with each other. Since the convex portion 13 cannot move toward the hollow portion 14, the first convex portion 13 cannot pass through the position where the second convex portion 29 is provided (FIG. 7).
Thus, the rotating shaft 12 and the bearing 22 are configured.

  Here, the disc-like member 11 is configured such that at least a part of the hollow portion 14 exists between the center of the disc-like member 11 and the first convex portion 13.

  Further, the disk-shaped member 11 is configured to have a shape in which the hollow portion 14 is curved so as to follow the outer peripheral surface of the disk-shaped member 11.

  By the way, it can be said that the load is a load for suppressing the rotation of the rotary shaft 12.

  Further, if the engaging portion 17 that can engage with the load applying member 61 is provided on at least one of the rotating shaft 12 and the bearing 22, the load is applied to the load applying member 61 and the engaging portion 17. It can also be said that it is a load for engaging with.

As described above, the embodiment method is applied to the assembly of the air blowing device 10 in which the assembly method of the present invention can blow out air in a predetermined flow rate and flow direction.
In the air blowing device 10, the bearing 22 is a part of the housing of the air blowing device 10, and the rotating shaft 12 is for adjusting at least one of the flow rate and the flow direction of the air blown from the air blowing device 10. It is a part of the member.

<Other aspects>
The present invention is not limited to the above embodiments, and various modifications can be adopted within the scope of the present invention.

  For example, in the air blowing device 10 to which the assembling method of the present invention is applied, the load applying spring 61 is not necessarily attached to the bearing 22 and may be attached to the rotating shaft 12. When the load applying spring 61 is attached to the rotating shaft 12, the recess 22 may be provided in the bearing 22. The load applying spring 61 may be attached to both the rotating shaft 12 and the bearing 22, and the recess 16 may be provided to both the rotating shaft 12 and the bearing 22.

  Furthermore, the load applying spring 61 does not necessarily need to be configured by a plate spring, and may be configured by a coiled spring.

  In addition, the assembling method of the present invention is not necessarily applied only when the air blowing device 10 is manufactured, but can be applied when assembling various rotating shafts, bearings, and load applying members.

  As described above, the present invention assembles the rotating shaft, the bearing, and the load applying member in such a simple manner as possible so that the load is applied from the bearing to the rotating shaft through the load applying member. It can be used as a method.

  DESCRIPTION OF SYMBOLS 10 ... Air blowing apparatus, 11 ... Air flow adjustment dial, 12 ... Rotating shaft, 21 ... Housing | casing, 22 ... Bearing, 61 ... Load application spring

Claims (8)

A rotating shaft that can rotate around an axis, a bearing that can support the rotating shaft, and a load applying member that can apply a load to the rotating shaft, the load from the bearing through the load applying member An assembly method for assembling so as to be applied to the rotating shaft,
An insertion step of inserting the rotating shaft into the bearing;
An adjustment step of adjusting a rotational position of the rotary shaft with respect to the bearing to a first position, wherein the first position is when the load applying member is attached to at least one of the rotary shaft and the bearing; At least a part of the load applying member is a recess provided in at least one of the rotating shaft and the bearing, and the load is applied to the rotating shaft when at least a part of the load applying member is in the recess. An adjustment step, which is the rotational position that will enter the recess that will not be applied,
An attaching step of attaching the load applying member to at least one of the rotating shaft and the bearing;
And after performing the first step in which the adjustment step is not performed after both the insertion step and the attachment step are performed,
A second step of adjusting a rotational position of the rotary shaft with respect to the bearing to a second position, wherein the load is applied from the bearing to the load when the load applying member does not enter the recess; Performing the second step, which is the rotational position to be imparted to the rotational shaft via the imparting member;
Assembly method. The assembly method according to claim 1,
When the rotation position of the rotation shaft is changed from the first position to the second position in the second step, the rotation position of the rotation shaft is prohibited from returning from the second position to the first position. The assembly method, wherein at least one of the rotating shaft, the bearing, and the load applying member is configured. The assembly method according to claim 2,
A disk-shaped member that rotates coaxially with the rotation shaft and cannot rotate relative to the rotation shaft, and protrudes from the outer peripheral surface of the disk-shaped member toward the radially outer side of the disk-shaped member. A disc-shaped member having a first convex portion and a hollow portion provided in the vicinity of the first convex portion,
The bearing is provided with a second convex portion projecting radially inward of the disk-shaped member,
When the first surface, which is a part of the surface constituting the first convex portion, and the second convex portion contact each other, the first convex portion is movable toward the hollow portion, When the second surface which is the other part of the surface constituting the convex portion and the second convex portion are in contact with each other, the first convex portion is immovable toward the hollow portion,
When the rotational position of the rotation shaft is changed from the first position to the second position, the first surface of the first convex portion and the second convex portion are in contact with each other, and the first convex portion is By being movable toward the hollow portion, the first convex portion can pass through the position where the second convex portion is provided,
When the rotational position of the rotation shaft is changed from the second position to the first position, the second surface of the first convex portion and the second convex portion are in contact with each other, and the first convex portion is By being immovable toward the hollow portion, the first convex portion cannot pass through the position where the second convex portion is provided.
Thus, the assembling method in which the rotating shaft and the bearing are configured. The assembly method according to claim 3,
The assembling method, wherein the disk-shaped member is configured such that at least a part of the hollow portion exists between a center of the disk-shaped member and the first convex portion. In the assembly method according to claim 3 or claim 4,
The assembling method, wherein the disk-shaped member is configured to have a curved shape so that the hollow portion is along the outer peripheral surface of the disk-shaped member. In the assembling method according to any one of claims 1 to 5,
The assembly method, wherein the load is a load for suppressing rotation of the rotating shaft. An assembly method according to any one of claims 1 to 6,
At least one of the rotating shaft and the bearing is provided with an engaging portion that can be engaged with the load applying member,
The assembling method, wherein the load is a load for engaging the load applying member and the engaging portion. In the assembling method according to any one of claims 1 to 7,
When the assembly method is applied to the assembly of an air blowing device capable of blowing air in a predetermined flow rate and flow direction,
The assembly is a part of a housing of the air blowing device, and the rotating shaft is a part of a member for adjusting at least one of a flow rate and a flow direction of air blown from the air blowing device. Method.

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