JP2012042210A - Manufacturing method for fin supporting member for air conditioning outlet and fin supporting member for air conditioning outlet manufactured by the method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a fin supporting member for an air conditioning outlet which is capable of obtaining good fin operating feeling by preventing the sudden change of the rotation load of the fin upon turning the fin, and the fin supporting member manufactured by this manufacturing.SOLUTION: When the fin supporting member 4 for the air conditioning outlet is formed through mold forming by employing an olefin system thermoplastic elastomer of Shore A80 or D60 as a material, many fine recesses and projections which are distributed substantially uniformly on the surface of the fin supporting member 4 are formed even when irregular recesses and projections on the surface of the mold are not removed beforehand and proper hardness can be imparted to these recesses and projections. These hardness of Shore A and D are the hardness measured based on ASTM2240. Many fine recesses and projections are distributed substantially uniformly on the surface of the fin supporting member 4 by comprising the peripheral surface of a through hole 4b and, as a result, the rotary shafts of air guiding fins 7a-7d are supported by the peripheral surface of the through hole 4b through so called point contact.

Description

  The present invention relates to a method of manufacturing a fin support member for an air conditioning outlet of a vehicle or the like. The present invention also relates to a fin support member for an air-conditioning outlet manufactured by the same method.

  2. Description of the Related Art Conventionally, an air conditioning outlet having a plurality of fins for changing the direction of airflow flowing out of an air conditioning duct and an operation knob manually operated by an automobile driver or the like to change the direction of these fins. A blowing direction changing device has been proposed. For example, Japanese Patent Application No. 9-63307 (Japanese Patent Laid-Open No. 10-250357) discloses a wind direction adjusting device for preventing the deterioration of the external appearance associated with the use of an operation knob and sliding the operation knob with a small force. Disclose.

  The wind direction adjustment of such a device is performed by rotating the fins by the driver of the automobile operating the operation knob by hand. Therefore, the operational feeling is influenced not only by the slidability of the operation knob but also by the rotational load of the fins. The vehicle air outlet device disclosed in Japanese Patent Application No. Hei 6-280646 (Japanese Patent Laid-Open No. Hei 8-145455) has a substantially lower portion of the lower shaft portion of the central vertical blade in order to adjust the operation load of the vertical blade (fin). It is supported by a shim made of an elastic material such as rubber or elastomer, or a blade connecting member made of elastomer is used in place of this shim.

Japanese Patent Application Laid-Open No. 2002-293950 discloses a method of heat-molding using a mold having a fine structure on the surface as a method of giving a fine uneven structure to the rubber surface. Japanese Patent Application Laid-Open No. 2006-306935 describes that an elastomer having fine irregularities can be obtained by molding with a roughened mold, for example.
Japanese Patent Laid-Open No. 10-250357 JP-A-8-145455 JP 2002-293950 A JP 2006-306935 A

When a polyester thermoplastic elastomer is injected into a normal mold and the part is molded, irregular irregularities on the mold surface are transferred to the part surface, and the part surface is compared as shown in the micrograph in FIG. Large irregularities are extremely irregularly formed. As a result, when another component in contact with the surface of the component is slid, as shown in FIG. 9, a sudden load change occurs at the peaks P ₁ and P ₂ of the curve R ₁ representing the load change. Accordingly, when the rotation shaft of the fin is supported by the parts having such a surface form, not only the operation feeling of the fin is lowered, but also the rotation operation of the fin becomes unstable. Further, when the rotation operation of the fin is repeated, the parts supporting the fin are likely to be worn or unevenly worn. When the parts that support the fins wear, the rotational load of the fins changes, so that it becomes difficult to maintain the operational feeling of the fins for a long period of time. Furthermore, in order to remove irregular irregularities on the mold surface and form a smooth surface that does not deteriorate the function of the molded part, it is generally necessary to perform expensive surface processing. In addition, in order to remove irregular irregularities on the surface of the mold and to give a desired pattern to the surface of the molded product, so-called drawing processing may be applied. In any case, when irregular irregularities on the mold surface are inconvenient, a process for removing these irregularities from the mold surface is performed.

  An object of the present invention is to provide a method for manufacturing a fin support member for an air-conditioning outlet, which can obtain a stable rotational load when rotating the fins and can obtain a good operational feeling for rotating the fins. Is to provide.

  Another object of the present invention is to prevent an abrupt change in the rotational load of the fin when rotating the fin, and to obtain a good operational feeling for rotating the fin. It is providing the manufacturing method of a fin support member.

  Still another object of the present invention is to provide a method for manufacturing a fin support member for an air-conditioning outlet, in which the operational feeling for rotating the fin is not significantly reduced even if the rotation of the fin is repeated. is there.

  Still another object of the present invention is to stop the fin at a desired angle and hold it at that position, and rotate the fin with a substantially constant operating force regardless of the fin stop position. It is in providing the manufacturing method of the fin support member of the blower outlet for air conditioning which can be made.

  Still another object of the present invention is to eliminate the necessity of performing an expensive surface treatment on a mold, and to manufacture a fin support member for an air conditioning outlet at a low cost. It is to provide a manufacturing method.

  Still another object of the present invention is to provide a fin support member for an air-conditioning outlet manufactured by the above-described manufacturing method.

  The method for manufacturing a fin support member for an air-conditioning outlet according to the present invention has irregular irregularities on the mold surface, and when a molded product is obtained by injecting a polyester-based thermoplastic elastomer, the surface of the molded product is obtained. An olefin-based thermoplastic elastomer having a Shore hardness of A80 to D60 is injected into a mold to which the irregular irregularities are transferred to form a fin support member for an air-conditioning outlet, and among the surfaces of the fin support member A plurality of fine irregularities distributed almost uniformly are formed at least on the fin support surface, and desired hardness is imparted to the fine irregularities. Here, the numerical values of Shores A and D of the present invention are numerical values measured according to ASTM 2240.

  The fin support member of the present invention rotatably supports the rotation shaft of the fin that restricts the direction of airflow at the air conditioning outlet and restricts the rotational load of the fin. When the rotation axis of the fin is constituted by a cylindrical protrusion, a hole for fitting the cylindrical protrusion is formed in the fin support member of the present invention, and the fin support surface that rotatably supports the rotation axis of the fin is formed. It can be constituted by the peripheral surface of the hole.

When the fin support member of the air-conditioning outlet is molded using an olefinic thermoplastic elastomer having a hardness of Shore A80 to D60 as a molding material, it is not necessary to remove irregular irregularities on the mold surface. A large number of fine irregularities distributed almost uniformly on the surface are formed, and at the same time, a desired hardness is imparted to these numerous fine irregularities. Therefore, the fin support member of the air-conditioning outlet having the various preferable characteristics described above can be easily manufactured. Here, the numerical values of Shores A and D of the present invention are numerical values measured according to ASTM 2240. The fin support structure for an air-conditioning outlet according to the present invention forms the fin support member with an olefin-based thermoplastic elastomer having the property that the mold transferability is inferior to other thermoplastic elastomers. Regardless of the processing state, a large number of fine irregularities are formed on the fin support member and the fin support surface. FIG. 8 shows a photomicrograph of the surface morphology of the fin support member of the present invention molded from an olefinic thermoplastic elastomer. Comparing the photomicrograph of FIG. 8 with the photomicrograph of FIG. 7, it can be seen that many fine irregularities are distributed almost uniformly on the surface form of FIG. As described above, a large number of fine irregularities are distributed almost uniformly on the fin support surface of the fin support member of the present invention. As a result, the rotation axis of the fin is supported by so-called point contact by the fine irregularities of the fin support surface. It is in the state. Therefore, when the fin supported by the fin support surface is rotated, as shown in FIG. 10, the load is substantially constant at the peaks P ₃ and P ₄ of the curve R ₂ representing the load change. This is in contrast to the conventional load change curve R ₁ shown in FIG. 9 that causes a sudden load change at the peaks P ₁ and P ₂ . Thereby, the fin support member of the air-conditioning outlet manufactured by the manufacturing method of the present invention can apply a stable rotational load to the fin during rotation of the fin, which is good for rotating the fin. A feeling of operation can be obtained.

  In addition, since the fin support surface of the fin support member of the air-conditioning outlet manufactured by the manufacturing method of the present invention has a large number of fine irregularities formed almost uniformly, it is affected by fine powder generated by wear. hard. Therefore, even if the rotation operation of the fin is repeated, it is difficult to cause a load change for operating the fin, and even when used for a long period of time, it is possible to prevent the feeling of operation for rotating the fin from being significantly reduced. .

  In addition, the fin support member of the air-conditioning outlet manufactured by the manufacturing method of the present invention is composed of an olefin-based thermoplastic elastomer having a Shore hardness of A80 to D60. Hardness can be set. Furthermore, since the fin support surface of the fin support member has a large number of fine irregularities formed substantially uniformly, when the fin rotates, a rotational load having a substantially constant magnitude is applied over the entire rotation region of the fin. Can act on fins. In addition, since the fin can be stopped at any position in the rotation area of the fin, the fin can be stopped at a desired angle, and even if the fin is stopped at any position, the operation force is almost the same. The fin can be rotated from the stop position.

  And since the fin support member of the blower outlet for air conditioning of this invention does not need to give an expensive surface process to a metal mold | die, it can be manufactured cheaply.

  Other features of the present invention will become apparent from the following description of this specification.

It is a perspective view of the air conditioning blower outlet of the vehicle which equipped the fin support structure ventilation of the air conditioning blower of this invention. It is a longitudinal cross-sectional view which follows the II-II line of FIG. It is a perspective view of the fin support structure of this invention. It is a cross-sectional view which follows the IV-IV line of FIG. It is an expanded sectional view of the fin support member vicinity of FIG. It is a disassembled perspective view of an operation knob. It is the drawing substitute photograph which injected the conventional polyester-type thermoplastic elastomer into the normal shaping | molding die, shape | molded components, and image | photographed the surface form, and is the microscope picture expanded 500 times. It is a drawing substitute photograph which image | photographed the surface form of the fin support member of this invention shape | molded with the metal mold | die by the olefin type thermoplastic elastomer, and is the microscope picture expanded 500 times. It is a table | surface which shows the change of the rotational load of a wind guide fin when a conventional fin support member which has the surface form of FIG. It is a figure which shows the change of the rotational load of a wind guide fin when a wind guide fin is supported on the fin support member of this invention which has the surface form of FIG.

  The surface of the mold has irregular irregularities, and when a molded product is obtained by injecting a polyester-based thermoplastic elastomer, the irregular irregularities are transferred to the surface of the molded article. A80 to D60 olefin-based thermoplastic elastomer is injected to form a fin support member for the air-conditioning outlet. Then, among the surfaces of the fin support member, at least the fin support surface is formed with a large number of fine irregularities distributed almost uniformly, and a desired hardness is imparted to these fine irregularities. The hardness of these Shores A and D is the hardness measured according to ASTM2240.

  1 to 6 show an embodiment in which the fin support structure of the present invention is applied to an air-conditioning outlet opening in a passenger compartment of an automobile. An opening 3 is formed in the panel portion 2 formed at the end of the air conditioning duct 1, and a fin support member 4 is attached to the center of the opening 3. A cover 4a is attached to the front surface of the fin support member 4, and the opening 3 is partitioned into two air conditioning outlets 3a and 3b by the support member 4 and the cover 4a. As shown in FIGS. 2 and 5, the support member 4 is connected to a partition wall 5 that divides the inside of the air conditioning duct 1 into two passages 1 a and 1 b. Accordingly, the air conditioning outlet 3a communicates with the passage 1a, and the air conditioning outlet 3b communicates with the passage 1b.

  A blowing direction changing device 6 is installed in each of the air conditioning outlet 3a communicating with the passage 1a and the air conditioning outlet 3b communicating with the passage 1b. The air guide fins 7a, 7b, 7c, 7d of each blowing direction changing device 6 extend in the horizontal direction, and the rotation fins 8a, 8b, arranged upstream of these air guide fins 7a, 7b, 7c, 7d, 8c, 8d, and 8e extend in the vertical direction.

  As shown in FIGS. 1 to 3, the air guide fins 7a-7d of each blowing direction changing device 6 are arranged at regular intervals in the vertical direction. As shown in FIGS. 2 to 6, a rotating shaft 9a is formed on the outer end face in the blade length direction of each air guide fin 7a-7d, and the inner end face in the blade length direction of each air guide fin 7a-7d. A rotating shaft 9b is formed in the shaft. These rotary shafts 9a and 9b have a cylindrical shape and protrude in the horizontal direction from the outer and inner end surfaces of the airflow fins 7a to 7d in the blade length direction. The rotating shaft 9a of each air guide fin 7a-7d is inserted into the insertion port 2a formed in the panel portion 2 and is rotatably supported. The rotating shaft 9b of each air guide fin 7a-7d is shown in FIG. As described above, the fin support member 4 is inserted into a plurality of through holes 4b penetrating both side surfaces and is rotatably supported. The through holes 4b are formed at regular intervals in the vertical direction on the side surfaces of the fin support member 4, and the peripheral surfaces of these through holes 4b rotatably support the rotation shafts 9b of the air guide fins 7a-7d. Of the bearing surface. Since the fin support member 4 of this embodiment supports the air guide fins 7a-7d of the pair of blowing direction changing devices 6 provided side by side in the lateral direction, the insertion hole of the rotating shaft 9b is formed by the through hole 4b. However, the insertion hole of the rotating shaft 9b does not need to be a through hole, and any hole that can support the rotating shaft 9b rotatably is sufficient. In this embodiment, the rotating shaft 9b is formed by a cylindrical protrusion protruding from the inner end face of the air guide fins 7a-7d, and this protrusion is inserted into the through hole 4b of the fin support member 4. On the contrary, it is also possible to form a columnar projection on the fin support member 4 and insert this projection into an insertion hole formed on the inner end face of the air guide fins 7a-7d in a rotatable manner. The air guide fins 7a-7d are connected by the link member 10 so that the fins 7a-7d rotate in conjunction with each other.

  Each of the rotation fins 8a, 8b, 8c, 8d, and 8e has a rotation shaft 11 that extends in the vertical direction. The rotation fins 8a-8e are arranged at regular intervals in the passages 1a, 1b of the air conditioning duct 1, and are supported so as to be rotatable in the left-right direction around the respective rotation shafts 11. The rotating shaft 11 of the rotating fins 8a-8e is parallel to the plane including the rotating shaft 9 of the air guide fins 7a-7d and rotated 90 degrees from the position overlapping the rotating shaft 9 of the air guide fins 7a-7d. Extend to. The rotating fins 8a-8e are connected by the link member 12 so that the fins 8a-8e rotate in conjunction with each other. In addition, an opening 13 is formed in the rotary fin 8 c, and a link member 14 is formed at a position adjacent to the opening 13.

  An elastic member 15 is fixed to the air guide fins 7 b of each blowing direction changing device 6. The elastic member 15 is fitted to a protrusion 17 formed at the central portion of the downstream end edge 16 of the air guide fin 7b. The protrusion 17 protrudes horizontally from the downstream end edge 16 of the air guide fin 7b, and the elastic member 15 fitted to the protrusion 17 protrudes horizontally from the downstream end edge 16 of the air guide fin 7b. The elastic member 15 can be made of a rubber-based elastic material such as silicon rubber.

  An operation knob 18 is attached to the air guide fins 7 b of each blowing direction changing device 6. As shown in FIGS. 2, 4 and 6, a wind guide fin housing portion 18a is formed inside the operation knob 18, and the wind guide fin 7b is housed in the wind guide fin housing portion 18a. A support rib 19 protruding toward the elastic member 15 fixed to the air guide fin 7 b is attached to the air guide fin housing portion 18 a, and the support rib 19 abuts on the elastic member 15. A guide projection 18b extending in the direction in which the operation knob 18 reciprocates is formed in the wind guide fin housing portion 18a. The guide projection 18b engages with a sliding groove 20 formed on the lower surface of the wind guide fin 7b. To do. The operation knob 18 is further formed with a pair of locking claws 18c, and these locking claws 18c engage with the upstream end surface 21 of the air guide fin 7c. That is, the operation knob 18 is a pair of engagement with the support rib 19 that contacts the elastic member 15, the guide protrusion 18b that engages with the sliding groove 20 of the air guide fin 7b, and the upstream end surface 21 of the air guide fin 7c. Are attached to the air guide fins 7b so as to be slidable in the blade length direction of the air guide fins 7b. Here, the blade length direction refers to the BB direction in FIG. The operation knob 18 is also formed with a pair of lever portions 18d so that the link member 13 of the rotary fin 8c is rotatably and slidably held by the pair of lever portions 18d (see FIGS. 2 and 4). .

  The fin support member 4 is made of an olefin-based thermoplastic elastomer having a Shore hardness of A80 to D60. The fin support member 4 is manufactured by molding an olefin-based thermoplastic elastomer with a molding die. Olefin-based thermoplastic elastomers have the property of being inferior in mold transferability compared to other thermoplastic elastomers. When the fin support member is formed of the olefinic thermoplastic elastomer having such characteristics, a large number of fine irregularities are formed on the formed fin support member and the fin support surface regardless of the processing state of the mold surface. . The fin support structure of the present invention is characterized in that the fin is rotatably supported by the fin support member or the fin support surface in which such a large number of fine irregularities are formed.

FIG. 8 shows a photomicrograph of the surface morphology of the fin support member of the present invention molded from an olefinic thermoplastic elastomer. On the other hand, FIG. 7 shows a photomicrograph of the surface morphology of a part formed by injecting a conventional polyester-based thermoplastic elastomer into a normal molding die. When the micrograph of FIG. 8 is compared with the micrograph of FIG. 7, many fine irregularities are distributed almost uniformly on the surface form of FIG. 8, whereas the surface form of FIG. As a result of the irregular irregularities on the mold surface being transferred to the component surface, it can be seen that relatively large irregularities are formed extremely irregularly on the component surface. As described above, the surface of the fin support member 4 according to the present invention includes a large number of fine irregularities including the peripheral surface of the through hole 4b. As a result, the rotation shaft of the air guide fins 7a-7d penetrates. The peripheral surface of the hole 4b is supported in a so-called point contact state. Therefore, when rotating the air guide fins 7a-7d, as shown in FIG. 10, no load change in the peak P ₃ and P ₄ of the curve R ₂ representing a load change. In other words, the conventional load change curve R ₁ shown in FIG. 9 causes a sudden load change at the peaks P ₁ and P ₂ , whereas the peak P ₃ of the load change curve R ₂ of the present invention shown in FIG. and the load of P ₄ is substantially constant.

  Briefly explaining the operation of the air blowing direction changing device 6 described above, the air-conditioning air flowing down in the direction A in FIG. It flows out from 3b. At this time, if the operation knob 18 is slid in the blade length direction, the lever member 18d of the operation knob 18 applies a rotational force to the link member 14 of the rotation fin 8c, and the rotation fins 8a-8e are moved to a desired angle in the left-right direction. Can only be rotated. Further, when the operation knob 18 is rotated in the vertical direction, the air guide fins 7a-7d can be rotated in the vertical direction by a desired angle. Thereby, the ventilation direction of the air-conditioning air which flows out out of the two air-conditioning blower outlets 3a and 3b can each be changed to arbitrary directions.

  As described above, the fin support member attached to the air conditioning outlet opening in the passenger compartment of the automobile has been described, but the manufacturing method of the fin support structure of the present invention is not limited to the fin support member attached to the air conditioning outlet of the vehicle. The present invention can be widely applied to the manufacture of fin support members that are attached to the air outlets of domestic or commercial blower devices.

DESCRIPTION OF SYMBOLS 1 Air conditioning duct 2 Panel part 4 Fin support member 4a Cover 4b Through-hole 5 Partition member 6 Air blowing direction change apparatus 7a-7d Air guide fin 8a-8e Rotating fin 9 Rotating shaft 11 Rotating shaft 18 Operation knob

Claims (2)

  The surface of the mold has irregular irregularities, and when a molded product is obtained by injecting a polyester-based thermoplastic elastomer, the irregular irregularities are transferred to the surface of the molded article. Injected a olefinic thermoplastic elastomer of A80 to D60 to form a fin support member for an air-conditioning outlet, and among the surfaces of the fin support member, a large number of fine distributions distributed almost uniformly on at least the fin support surface. A method for producing a fin support member for an air-conditioning outlet, wherein irregularities are formed and desired hardness is imparted to the fine irregularities.   A fin support member for an air-conditioning outlet manufactured by the manufacturing method according to claim 1.