JP2009143422A - Dial knob of register - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dial knob of a register allowing imparting of stable operation load, remarkable reduction of man-hour of an assembling work and efficient manufacturing, in the dial knob having a soft surface part on an operation surface and provided with an operation load imparting part in a boss part. <P>SOLUTION: This dial knob 10 of this register performs a rotating operation to adjust an air blowing state of the register. In a knob body 11, a circular-arc shaped surface holding part 14 is formed. In the surface holding part 14, the soft surface part 20 made of soft synthetic resin is coated and attached. The knob body 11 is provided with the boss part 12 to fit a knob supporting shaft 7 for rotatably journaling the knob body 11. In the boss part 12, a storing part 17 for storing the operation load imparting part 22 is formed. In the storing part 17, the operation load imparting part 22 made of soft synthetic resin is arranged integrally with the soft surface part 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a register dial knob for rotating a damper plate, a movable louver, a barrel or the like in a register used for an air outlet for ventilation or air conditioning in an automobile interior.

  As an air conditioning register for automobiles, a laterally movable louver and a longitudinally movable louver are arranged in the bezel to adjust the wind direction, etc., and the air flow is stopped or the air volume is adjusted at the rear of the ventilation path provided with the movable louver. A register provided with a damper plate that can be opened and closed is known in Patent Document 1 below.

  The damper mechanism used in this register is such that a damper plate is pivotally supported in the ventilation path, and a dial knob for manual operation is pivotally supported on the front side of the retainer, and a tooth portion provided at the rear of the dial knob. In addition, the damper arm is linked and connected to the shaft of the damper plate, and the damper plate is rotated by the operation of the dial knob to stop the blowing or adjust the air volume.

  By the way, when turning the damper plate by operating the dial knob by manual operation, if it moves too lightly, there is a bad operability such as difficult to stop at any position, and the damper plate is natural due to wind pressure and vibration. There is a problem of rotating. Therefore, conventionally, a rubber or soft boss member is fitted to the shaft support portion of the dial knob so that a certain amount of operation load is applied when the dial knob is turned.

  In the structure in which this operation load is applied to the dial knob, when the dial knob is fitted to the shaft portion, a rubber or soft, flanged boss member is fitted between the shaft portion and the shaft hole of the dial knob. The spring washer is fitted to the tip while being pressed, and thereby an appropriate operating load is generated for the rotation of the dial knob by the sliding frictional resistance of the rubber or soft synthetic resin boss member.

  However, since this type of dial knob is molded by synthetic resin molding, and the soft boss member is also molded by rubber or soft synthetic resin molding, dimensional variation (dimensional error) during molding varies from product to product. May occur. In such a case, there is a problem that the boss member fitted in the shaft support portion is rattled or the assembly work is difficult.

On the other hand, in a dial knob for damper operation in a register, for example, as described in Patent Document 2 below, a soft skin portion is fitted into the dial body on the dial operation surface to improve the feeling during operation. The dial knob is known.
Japanese Utility Model Publication 1-148553 JP 2000-335234 A

  In this type of dial knob, the dial main body and the soft skin portion are separately formed, and the soft skin portion is fitted into the outer peripheral portion of the dial main body in a subsequent assembling process.

  If there is a dimensional variation (dimension error) during molding of the dial body and soft skin part, during assembly work, there will be one member each from among the many dial bodies and soft skin parts that have subtle differences in dimensions. When it is taken out and assembled, if a dimensional error of each member occurs on the side where the fitting is loosened, the soft skin portion is likely to be loosely fitted. On the other hand, if a dimensional error occurs on the side where the fitting is tight, the assembling work becomes difficult, and the work of the smooth assembling process tends to be hindered.

  The present invention solves the above-mentioned problems, and can provide a stable operation load in a dial knob having a soft skin portion on an operation surface and an operation load applying portion on a boss portion. It is an object of the present invention to provide a register dial knob that can be manufactured efficiently while greatly reducing the number of work steps.

  The register dial knob according to the present invention is a register dial knob that is rotated to adjust the air blowing state of the register. An arc-shaped skin holding portion is formed in the knob body, and the skin holding portion is soft. A soft skin part made of a synthetic resin is covered and attached, and a boss part for fitting a knob support shaft that pivotally supports the knob body is provided on the knob body. An accommodating portion for accommodating the load applying portion is formed, and an operating load applying portion made of a soft synthetic resin is disposed integrally with the soft skin portion in the accommodating portion.

  Here, a flow path frame portion is formed between the housing portion of the boss portion and the skin holding portion, and during molding, the soft synthetic resin material is passed through the flow path frame portion in the housing portion and the skin holding portion during molding. The soft skin portion and the operation load applying portion can be integrally formed. Thereby, the peeling resistance of the soft skin portion and the operation load applying portion can be increased and the peeling can be prevented. Insert molding with soft synthetic resin using the knob body as an insert, or 2 of hard synthetic resin and soft synthetic resin. By color molding, a dial knob having a soft skin portion can be easily manufactured with less man-hours.

  In addition, a damper plate is disposed in the ventilation passage of the register, and a lever portion that is linked to the damper support shaft of the damper plate can project from the knob body. Thus, the damper plate can be favorably opened and closed by operating the dial knob.

  Moreover, a thermoplastic elastomer can be used as the soft synthetic resin. Thereby, the feeling (operation feeling) at the time of operation of a dial knob can be made favorable.

  Further, in order to stop and hold the rotation operation position of the dial knob with a sense of moderation, an elastic holding portion can be provided in a part of the knob body so as to be elastically deformable. Thus, for example, when the damper plate is opened / closed by the dial knob, the damper plate can be kept stationary with a sense of moderation and held at the open / closed positions of the damper.

  According to the dial knob of the register having the above configuration, the arc-shaped skin holding portion provided on the knob body is covered with the soft skin portion made of soft synthetic resin, and the knob body is rotated on the knob body. Provided with a boss part for inserting a knob support shaft that is pivotally supported, a boss part is formed with an accommodating part for accommodating an operation load applying part, and an operating load applying part made of soft synthetic resin is formed in the accommodating part Is provided integrally with the soft skin.

  Therefore, the soft skin part can improve the feel and operation feeling during operation, the operation load applying part of the boss part can provide a stable operation load, and the boss part in the assembly process Compared with the work in which the elastic body for the operation load is assembled manually, the man-hour can be greatly reduced and the dial knob can be manufactured efficiently.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view of a register for air conditioning mounted on an instrument panel or the like of a vehicle, and FIG. 2 shows a perspective view in a state where a part of the register is broken.

  This register includes a retainer 2 formed in a duct shape having a square cross section and a bezel 1 fitted to the front portion of the retainer 2. The front portion of the retainer 2 protrudes from the front side on the left side and the right side It is formed in an oblique shape that is retracted rearward, and an air passage 2 a is formed in the retainer 2. The front surface of the bezel 1 is provided with an air outlet 1a and a knob opening 1b for a dial knob.

  A damper plate 8 is disposed at the rear portion of the ventilation path 2a in the retainer 2 so as to be capable of rotating operation in order to stop air blowing or adjust the air volume. The damper plate 8 is formed in a plate shape by providing bearing portions on both sides, and a shaft is fitted into the bearing portion from a shaft hole provided in the side wall of the retainer 2 and is supported rotatably. In particular, a large-diameter damper support shaft 9 having a lever portion 9 a is fitted from the left side wall of the damper plate 8, and the damper support shaft 9 is rotatably supported by the left side wall portion of the retainer 2. 8 is rotatably supported together with the damper support shaft 9. The damper plate 8 has a soft edge portion 8a such as a sponge sheet attached to the edge thereof, and when closed, the soft edge portion 8a is brought into contact with the inner peripheral surface of the air passage 2a to improve the sealing performance.

  A front movable louver 3 is disposed between the front portion of the retainer 2, that is, between the bezel 1 and the retainer 2, and a rear movable louver 4 is disposed behind the front movable louver 3. The front movable louver 3 has a plurality of horizontal fins 3a arranged at regular intervals, and each horizontal fin 3a is rotatably held at the front portion of the retainer 2 via the shafts on both sides. In addition, an eccentric shaft projecting from one end of each horizontal fin 3a is connected to a single link bar (not shown) so that all the horizontal fins 3a can be synchronously changed in direction. .

  The rear movable louver 4 has a plurality of vertical fins 4a arranged at regular intervals, and each vertical fin 4a is rotatably held at the front portion of the retainer 2 via a vertically projecting shaft. In addition, one link bar (not shown) is connected to an eccentric shaft projecting from one end of each vertical fin 4a, and all the vertical fins 4a can be synchronously changed in direction to the left and right. Further, a linkage portion such as a fan-shaped gear portion is provided at the front portion of one vertical fin 4a, and is engaged with a linked portion such as a gear portion provided at the rear portion of the slide knob 5 described later. When slid in the left-right direction, the orientation of the vertical fins 4a of the rear movable louver 4 is adjusted to the left and right.

  The slide knob 5 is externally slidably fitted to one lateral fin 3a of the front movable louver 3 so as to protrude forward. The slide knob 5 adjusts the direction of the horizontal fins 3a of the front movable louver 3 up or down by rotating up and down, and through the engaging portion by sliding the slide knob 5 in the left-right direction. The left and right directions of the vertical fins 4a of the rear movable louver 4 are adjusted to the left or right.

  As shown in FIG. 2, the dial knob 10 can be rotated by a damper support shaft 9 on the left side surface of the front portion of the retainer 2 in order to rotate the damper plate 8 disposed in the ventilation path 2 a. It is pivotally supported. The dial knob 10 is attached to the outer peripheral portion of the skin holding portion 14 of the knob body 11 so as to cover the soft skin portion 20, and the operation load applying portion 22 is placed in the housing portion 17 of the boss portion 12 of the knob body 11. It is configured to accommodate.

  As shown in FIG. 7, the knob main body 11 is basically formed in a circular frame shape, and a lever portion 13 is formed to protrude sideways on a part of the circular frame, and a link pin 13 a is formed at the tip of the lever portion 13. It is erected. The front half of the circular frame of the knob body 11 is formed in a semicircular shape as the skin holding portion 14, and the display holding portion 14 covers and forms a soft skin portion 20 described later. A substantially square boss portion 12 is formed in the center of the knob body 11, and the boss portion 12 is provided with a storage portion 17 for storing the operation load applying portion 22. The knob body 11 is integrally formed into a shape as described above using a hard synthetic resin such as PVC. As will be described later, the operation load applying portion 22 is formed integrally with the soft skin portion 20 by insert molding using a soft synthetic resin such as a thermoplastic elastomer.

  The boss portion 12 is surrounded by a substantially square polygonal peripheral wall portion 12a, is formed in a rectangular box shape by providing a bottom plate 12b at an internal intermediate position, a polygonal hole 12c is formed at the center of the bottom plate 12b, and the four corners of the bottom plate 12b are formed. A small hole 12d is formed in the hole. Between the polygonal peripheral wall portion 12 a of the boss portion 12 and the circular frame of the knob main body 11, the flow path frame portion 16 is connected and formed in a form of bridging. The inside of the boss portion 12 is a housing portion 17 for the operation load applying portion 22.

  Further, an elastic holding portion 15 for holding the rotation operation position is provided outside the boss portion 12 on the inner side of the circular frame of the knob body 11 with a protruding portion 15a protruding from the central portion of the elastic frame. The elastic holding portion 15 is formed so as to be elastically deformable when the projection portion 15a receives a load from the outer periphery, and is provided on the retainer 2 side when the dial knob 10 is rotated to a predetermined closed position or open position. The protrusion 15a is engaged with the positioning recess, and the dial knob 10 is surely stationary with a sense of moderation.

  When attaching the operation load applying portion 22 and the soft skin portion 20 to the knob body 11 having the above structure, the operation load applying portion 22 and the soft skin portion 20 are integrally formed by insert molding with a soft synthetic resin using the knob body 11 as an insert. Molded.

  At the time of manufacture, the knob body 11 is molded in advance into a shape as shown in FIG. 7 with a hard synthetic resin such as PVC. The knob body 11 is set as an insert in a molding die having a predetermined shape, and a soft synthetic resin is injected into the cavity of the molding die so that the operation load applying portion 22 and the soft skin portion 20 are attached to the knob body 11. It insert-molds so that it may coat | cover or fill the accommodating part 17. FIG. As the soft synthetic resin, thermoplastic elastomers such as polyolefin, polyurethane, styrene, ethylene, butylene, and copolymer can be used.

  At the time of molding, a soft synthetic resin material such as an elastomer injected into the mold is filled in the accommodating portion 17 and the periphery of the arcuate frame portion 14b in the knob body 11, but in the accommodating portion 17 and the arcuate frame portion 14b. As shown in FIG. 6, the soft synthetic resin material flows through the flow path frame portion 16 therebetween, and the cavity is filled with the material. And the operation load provision part 22 and the soft skin part 20 are integrally molded with respect to the knob main body 11 at once by insert molding. Further, as shown in FIGS. 5 and 6, the soft synthetic resin material also wraps around the back surface of the knob body 11 during molding, so that the cover is covered over the front and back surfaces and the front surface of the arc-shaped frame portion 14 b of the knob body 11. A skin portion 20 is formed. On the other hand, the soft synthetic resin material is also filled in the accommodating portion 17 of the boss portion 12, and that portion is formed as the operation load applying portion 22, and the shaft hole 22 a is formed in the center of the operation load applying portion 22.

  In this case, as shown in FIG. 4, the soft synthetic resin material flows into both side surfaces of the front surface and the back surface of the housing portion 17 and is molded with high peel resistance. As shown in FIG. 7, a bottom plate 12b is formed in the boss portion 12 of the knob body 11, and a polygonal (hexagonal) hole 12c is formed at the center of the bottom plate 12b, and the bottom plate around the polygonal hole 12c. A small hole 12d is formed in 12b, and a small hole is also formed in the flow path frame portion 16.

  Therefore, at the time of insert molding, the soft synthetic resin material passes from the front surface to the back surface of the boss portion 12 through the polygonal hole 12c and the small hole 12d and is filled in the cavity. Furthermore, the soft synthetic resin material flows on both the front and back surfaces of the flow path frame portion 16, thereby forming the flow path filling portions 21 on the front and back surfaces of the flow path frame portion 16.

  Therefore, the soft synthetic resin of the operation load applying portion 22 in the boss portion 12 after molding is filled as anchors around the small holes 12d and the polygonal holes 12c as shown in FIG. The operation load applying portion 22 can be firmly attached in the housing portion 17 of the boss portion 12. Further, a protrusion 14a is provided at the center of the arc-shaped frame portion 14b of the skin holding portion 14 of the knob body 11, and when the soft skin portion 20 is molded, a soft synthetic resin material surrounds the periphery of the protrusion 14a. Since it is molded, the peel resistance of the soft skin portion 20 can be improved, and the soft skin portion 20 covering the arcuate frame portion 14b can be firmly attached. At the time of molding, a fine uneven portion is formed on the front surface side of the soft skin portion 20 to improve the touch when operated with a finger and prevent slipping.

  As described above, when the dial knob 10 is manufactured, the soft skin portion 20 and the operation load applying portion 22 are integrally formed and attached to the knob body 11 by insert molding. Assembling of the soft skin part and the operation load applying part in the work becomes unnecessary, and the number of steps can be greatly reduced and the dial knob can be manufactured efficiently.

  As shown in FIG. 2, a knob support shaft 7 projects from the left wall portion of the retainer 2, and the dial knob 10 is rotatably supported on the knob support shaft 7. As described above, the dial knob 10 has the lever portion 13 protruding sideways, and the linkage pin 13 a provided at the tip of the lever portion 13 engages with the guide hole 6 c provided at one end of the rotary link member 6. is doing.

  The rotation link member 6 is formed in an arm shape with link portions projecting on both sides of the shaft portion, and the shaft portion is rotatably fitted to a shaft 6a projecting outside the left wall portion of the retainer 2. Are combined. An engagement pin 6b protrudes from the end of the rotation link member 6, and this engagement pin 6b is engaged with the guide hole 9b of the lever portion 9a of the damper support shaft 9 described above. Thereby, the rotation link member 6 rotates according to the rotation operation of the dial knob 10, and the damper support shaft 9 and the damper plate 8 rotate according to the rotation.

  The register having the dial knob 10 having the above-described configuration is attached to an instrument panel or a dashboard portion in a car so that the end of the retainer 2 is connected to a ventilation duct (not shown). The air sent from the ventilation duct is blown out from the ventilation path 2a in the retainer 2 through the air outlet 1a.

  When adjusting the air blowing direction up or down, when the slide knob 5 is operated up or down, the horizontal fins 3a of the front movable louver 3 rotate and the direction changes up and down, and the air blowing direction. Is adjusted up and down.

  When adjusting the air blowing direction to the left and right, if the slide knob 5 is operated to the right or left, the vertical fins 4a of the rear movable louver 4 rotate about the upper and lower rotating shafts, and the left and right directions are It changes in a predetermined angle range, and the blowing direction of air is adjusted to right and left.

  When the air flow is stopped or throttled or the ventilation path 2a is opened, the dial knob 10 located at the front left end of the bezel 1 is pushed with a finger or the like and turned up or down. At this time, the dial knob 10 rotates around the knob support shaft 7. At this time, an operation load applying portion 22 made of a soft synthetic resin (made of thermoplastic elastomer) is disposed on the boss portion 12 through which the knob support shaft 7 is inserted, and the periphery of the knob support shaft 7 is held appropriately. A large operation load is applied to the operation of the dial knob 10.

  The turning force of the dial knob 10 is transmitted from the lever portion 13 to the damper plate 8 through the rotary link member 6 and the damper support shaft 9, and the damper plate 8 is in the closing direction of the ventilation path 2a or in the opening direction. To turn. In the closed position and the open position of the damper plate 8, the protrusion 15 a of the elastic holding portion 15 of the dial knob 10 is engaged and held by the engaging portion on the retainer 2 side. The position can be maintained.

  In this manner, the arc-shaped skin holding portion 14 provided on the knob body 11 is attached with the soft skin portion 20 made of soft synthetic resin so that the knob body 11 can be turned on the knob body 11. A boss portion 12 for fitting the knob support shaft 7 to be supported is provided, and a housing portion 17 for housing the operation load applying portion 22 is formed in the boss portion 12, and the housing portion 17 is made of a soft synthetic resin. Since the operation load applying portion 22 is provided integrally with the soft skin portion 20, the soft skin portion 20 can improve the feel and operation feeling during operation, and is stabilized by the operation load applying portion of the boss portion 12. An operation load can be applied. Furthermore, compared with the operation | work which assembled | attached the elastic body for the operation load to the boss | hub part by the assembly process by the assembly process like the past, a man-hour can be reduced significantly and a dial knob can be manufactured efficiently.

  In addition, this invention is not limited to said embodiment, It can implement also with the following aspects.

  In the above embodiment, an example in which the dial knob is used for the operation of the damper plate has been described, but the dial knob of the present invention can also be used for the rotation operation of the front movable louver and the rear movable louver.

  In the above embodiment, insert molding using the knob main body as an insert is performed for molding the soft skin portion and the operation load applying portion of the dial knob. However, the knob main body and the soft soft resin are formed by two-color molding of a hard synthetic resin and a soft synthetic resin. The skin part and the operation load applying part can also be molded.

It is a perspective view of a register showing one embodiment of the present invention. It is a perspective view of the register | resistor which attached the fracture | rupture part in part. It is a top view of the dial knob of a register. FIG. 4 is a perspective view including a IV-IV partial cross section of FIG. 3. It is a bottom view of the dial knob. It is a perspective view of the dial knob. It is a perspective view of the knob main body of a dial knob.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bezel 2 Retainer 2a Ventilation path 3 Front movable louver 4 Rear movable louver 7 Knob support shaft 8 Damper plate 10 Dial knob 11 Knob main body 12 Boss part 12a Polygonal peripheral wall part 12b Bottom plate 12c Polygonal hole 13 Lever part 14 Skin holding part 14a Protruding portion 14b Arc-shaped frame portion 16 Flow path frame portion 17 Storage portion 20 Soft skin portion 22 Operation load applying portion

Claims (5)

In the dial knob of the register that rotates to adjust the air blowing state of the register,
An arcuate skin holding portion is formed on the knob body, and the skin holding portion is covered with and attached with a soft synthetic resin soft skin portion, and a knob support shaft that pivotally supports the knob body is provided. A boss portion for insertion is provided in the knob body, and a housing portion for housing an operation load applying portion is formed in the boss portion, and the housing portion is made of a soft synthetic resin integrally with the soft skin portion. A dial knob for a register, characterized in that an operation load applying portion is provided.   A flow path frame portion is formed between the housing portion of the boss portion and the skin holding portion, and at the time of molding, a soft synthetic resin material is caused to flow into the housing portion and the skin holding portion through the flow path frame portion. 2. The register dial knob according to claim 1, wherein the soft skin portion and the operation load applying portion are integrally formed.   3. A register dial knob according to claim 1, wherein a damper plate is disposed in the ventilation passage of the register, and a lever portion linked to a damper support shaft of the damper plate is projected from the knob body. .   The register dial knob according to claim 1, wherein a thermoplastic elastomer is used as the soft synthetic resin. 5. The elastic holding portion is provided in a part of the knob body so as to be elastically deformable so as to stop and hold the rotation operation position of the dial knob with a sense of moderation. The dial knob of the listed register.

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