JP2017177980A - Dial knob apparatus for register - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dial knob apparatus for register, in which workability upon assembling operation of a dial knob may be improved.SOLUTION: A boss part 12 comprising a shaft hole is formed on a knob main body 11 of a dial knob 10, a circumferential wall part 12a is arranged on circumferential part of the boss part 12, and a knob support shaft 20 is arranged on a retainer 2. A plate spring member 30 comprising a projecting part 31 is attached near the knob support shaft 20 in a manner where the projecting part 31 contacts to circumferential surface of the circumferential wall part 12a. A recessed part 12b is arranged on circumferential surface of the circumferential wall part 12a, onto which the projecting part 31 of the plate spring member 30 may be engaged. An inside folded part 32 is arranged in an inwardly inclined manner to the projecting part 31 on a side part of the projecting part 31 of the plate spring member 30.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a register dial knob device 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 stopped upstream of the ventilation path provided with the movable louver. A resistor provided with a damper plate that can be opened and closed is used.

  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 to the shaft of the damper plate, and the damper plate is rotated by operating the dial knob to stop 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.

  In order to solve such a problem, an operation load applying member is fitted to a boss portion that supports the support shaft of the dial knob, and the friction between the operation load applying member and the support shaft is turned when the dial knob is rotated. A register that applies an operation load by a resistor is known from Patent Document 1 below.

  This register has an arcuate skin holding part formed on the knob knob's knob body, and the skin holding part is covered with a soft skin part made of soft synthetic resin, so that the knob body can be pivotally supported. The knob body is provided with a boss portion for inserting the knob support shaft, and the boss portion is formed with a housing portion for housing the operation load applying portion. The housing portion is formed of a soft synthetic resin integrally with the soft skin portion. An operation load applying unit made of metal is disposed.

JP 2009-143422 A Utility Model Registration No. 3189745

  However, since this dial knob is formed integrally with the soft skin part of the knob body and the operation load applying part of the boss part, the material of the soft skin part and the operation load applying part is the same. Cannot be set independently regardless of the soft epidermis. For this reason, it is difficult to arbitrarily set the operation load of the dial knob according to the type and structure of the register.

  In addition, this dial knob is provided with convex portions on the fixed side and dial knob side in order to create a sense of moderation, and when the damper plate is opened and closed, the convex portion gets over the convex portion and creates a sense of moderation. I am letting. For this reason, when the convex part of the dial knob gets over the convex part on the fixed side, a relatively large load is generated on the dial knob, and the movement of the dial knob is likely to deteriorate.

  In view of the above, in the above-mentioned Patent Document 2, the present applicant attaches a leaf spring member having a convex portion in the vicinity of the knob spindle that pivotally supports the dial knob, and attaches the convex portion to the circumferential wall portion of the boss portion of the dial knob. We proposed a dial knob device with a structure to contact the

  In this dial knob device, in addition to a leaf spring member, an operation load applying member of a polymer elastic body having a shaft hole is accommodated in a housing portion of a boss portion of the dial knob, and an axis of the operation load applying member is provided on a knob support shaft. When the dial knob is turned by inserting the hole, the frictional resistance between the operation load applying member and the knob support shaft and the friction resistance between the convex portion of the leaf spring member and the circumferential surface of the circumferential wall portion of the boss portion are appropriate. An operation load is generated, and the dial knob can be rotated with a good operation feeling.

  However, when the dial knob is assembled at the time of manufacture, the boss portion 52 of the dial knob 51 is fitted into the knob support shaft 50 provided on the side wall of the retainer, as shown in FIG. At this time, the boss portion 52 is brought into contact with the knob support shaft 50 while bringing the circumferential surface of the circumferential wall portion 55 of the boss portion 52 into contact with the convex portion 54 of the leaf spring member 53 attached in the vicinity of the knob support shaft 50 in advance. It is fitted to push.

  At this time, the convex portion 54 of the leaf spring member 53 is very small, and the boss portion 52 of the dial knob 51 becomes a blind so that the assembling operator can hardly see the convex portion 54 of the leaf spring member 53. Moreover, it is necessary to push the boss portion 52 while accurately contacting the peripheral surface of the circumferential wall portion 55 of the boss portion 52 with the convex portion 54 of the leaf spring member 53.

  For this reason, the operator predicts the positions of the convex portion 54 of the leaf spring member 53 and the circumferential wall portion 55 of the boss portion 52, and moves the circumferential wall portion 55 of the boss portion 52 of the dial knob 51 near the knob support shaft 50. The operation is performed so as to be inserted from the side edge portion side of the leaf spring member 53.

  However, at this time, the circumferential wall portion 55 of the boss portion 52 is very easily caught on the side edge portion (cutting edge of a stainless steel plate or the like) of the leaf spring member 53. For this reason, the boss portion 52 of the dial knob 51 is attached to the knob support shaft. The operation of inserting the dial knob to the proper position with respect to 50 is complicated and difficult, and there is a difficulty in workability when the dial knob is assembled.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and to provide a register dial knob device capable of improving workability at the time of dial knob assembly work.

In the register dial knob device according to the present invention, the operation dial knob is pivotally supported by a part of the retainer via a knob support shaft and a boss portion fitted to the knob support shaft so as to be rotatable. In the dial knob device of the register,
The knob body of the dial knob is provided with the boss portion having a shaft hole, the outer peripheral portion of the boss portion is provided with a circumferential wall portion, and the knob support shaft is provided on a part of the retainer,
A leaf spring member having a convex portion is attached in the vicinity of the knob support shaft with the convex portion in contact with the circumferential surface of the circumferential wall portion, and the convex portion of the leaf spring member is disposed on the circumferential surface of the circumferential wall portion. A recess is provided with which the part can be engaged,
An inner bent portion is provided on at least one side of the convex portion of the leaf spring member so as to be inclined toward the inner side of the convex portion.

  According to the dial knob device of the present invention, when the dial knob is assembled, when the boss portion of the dial knob is fitted to the knob support shaft provided on the side wall of the retainer, the circumferential surface portion of the circumferential wall portion of the boss portion is the plate. Since it is fitted in contact with the inclined surface of the inner bent portion provided on the side of the convex portion of the spring member, the problem that the circumferential wall portion of the boss portion of the dial knob is caught on the side edge portion of the leaf spring member is prevented, The boss portion of the dial knob can be smoothly inserted to an appropriate position with respect to the knob support shaft, and the workability of assembling the dial knob can be improved.

  Here, the leaf spring member can be provided with a U-shaped portion bent in a substantially U shape on both sides of the spring body, and a convex portion bent in an arc shape can be provided in the approximate center of the spring body. . In addition, a spring accommodating portion for assembling the leaf spring member is provided in the vicinity of the knob support shaft, and a locking portion for engaging the U-shaped portions on both sides of the leaf spring member can be provided in the spring accommodating portion. According to this, at the time of assembly, the leaf spring member can be easily and reliably attached to the position facing the circumferential wall portion of the dial knob.

  Here, the boss portion is provided with a housing portion, an operation load applying member of a polymer elastic body having a shaft hole is received in the housing portion, and the dial knob is provided on the knob support shaft with the operation load applying member. The shaft hole can be inserted, and the peripheral surface of the circumferential wall portion can be brought into contact with the convex portion of the leaf spring member to be pivotally supported. According to this, when the dial knob is rotated, the operation load is caused by the friction resistance between the operation load applying member and the knob spindle and the friction resistance between the convex portion of the leaf spring member and the peripheral surface of the circumferential wall portion of the boss portion. Therefore, the dial knob can be rotated with a good operation feeling.

  Also, when opening and closing the damper, the engagement of the convex part of the leaf spring member and the concave part of the circumferential wall part creates a feeling of moderation, so that a smooth feeling of moderation is generated and dial operation is performed with a good operation feeling. Can be done.

  Furthermore, since the convex part of the leaf spring member is brought into contact with the circumferential wall part of the outer peripheral part of the boss part, the radius of the circumferential wall part can be made relatively small, and thereby the entire rotation angle range of the dial knob. A stable frictional resistance, that is, an operation load can be applied.

  According to the dial knob device of the register of the present invention, when the dial knob is assembled, the boss portion thereof can be easily inserted to an appropriate position with respect to the knob support shaft, and the dial knob assembly workability is improved. Can do.

It is a front view of the register | resistor which shows one Embodiment of this invention. It is a left view of the register. It is the perspective view seen from the back side of the register. It is a disassembled perspective view of the register. It is VV sectional drawing of FIG. It is a left view with an enlarged view which shows the knob spindle periphery provided in the side part of the retainer. It is a perspective view which shows the knob support shaft periphery provided in the side part of the retainer. It is a perspective view at the time of mounting | wearing the leaf | plate spring member in the vicinity of a knob spindle. It is IX-IX sectional drawing with an enlarged view of FIG. (A) is the side view seen from the inner side which shows the positional relationship of a dial knob, a link member, and a damper support shaft and a leaf | plate spring member, (b) is the perspective view. (A) is an enlarged front view of a leaf | plate spring member, (b) is the left view, (c) is the top view. (A) is an expansion perspective view of a leaf | plate spring member, (b) is the perspective view seen from the back side. It is an explanatory sectional view at the time of attaching a leaf spring member to a storage part. FIG. 4 is an explanatory cross-sectional view when the boss portion of the dial knob is fitted into the peripheral edge portion of the knob support shaft 20. It is the fragmentary sectional view which looked at the dial knob, the link member, and the damper support shaft from the inside when the damper plate is closed. It is the fragmentary sectional view which looked at the dial knob, the link member, and the damper support shaft from the inner side when the damper plate is opened. It is a description perspective view at the time of fitting the boss | hub part of a dial knob in the knob support axis | shaft of the conventional retainer side.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a front view of an air-conditioning register mounted on an instrument panel or the like of a vehicle, FIG. 2 shows a left side view of the register, and FIG. 5 shows a VV cross-sectional view of FIG. In addition, the front part and the rear part of the register are described with the downstream side of the airflow flowing through the ventilation path 2a as the front part and the upstream side as the rear part.

  This register has a duct shape with a substantially square cross section, and includes a retainer 2 having a ventilation path 2a therein and a bezel 1 fitted to the front portion of the retainer 2, as shown in FIGS. A ventilation passage 2 a is provided in the retainer 2 so as to communicate with the air outlet 1 a of the bezel 1. Inside the air outlet 1a, a cross-fin type front movable louver 3 and a rear movable louver 4 are arranged with fins arranged orthogonally to each other.

  Further, as shown in FIG. 1, the front portion of the bezel 1 is provided with a knob opening 1b for the dial knob together with the air outlet 1a, and the dial portion 13 of the dial knob 10 for damper operation is provided with the knob opening. It is exposed from the part 1b.

  As shown in FIG. 5, a damper plate 8 for stopping air blowing or adjusting the air volume is disposed at the rear part of the air passage 2a in the retainer 2 so as to be rotatable. The damper plate 8 is formed in a plate shape capable of closing the ventilation path 2a, and a sealing material made of a rubber sheet such as sponge rubber is attached to the peripheral edge. As shown in FIG. 4, the damper plate 8 opens and closes in the ventilation path 2 a of the retainer 2. For this purpose, a shaft support 8 a protrudes from one side of the damper plate 8, and the shaft support 8 a serves as the retainer 2. It is rotatably fitted in a shaft hole provided in the side wall of this.

  On the other hand, a large-diameter hole portion 2b is provided in the wall portion of the retainer 2, and a large-diameter damper support shaft 9 having a lever portion 9a is fitted into the hole portion 2b from the outside. The locking portion 9c of the damper support shaft 9 is fitted into the fitting portion 8b (FIG. 4) provided in the portion. Thereby, the damper plate 8 is rotatably supported by the side wall portions on both sides of the retainer 2 by the damper support shaft 9 and the shaft support portion 8 a, and is rotatably supported together with the damper support shaft 9.

  As shown in FIG. 2, a rod-shaped spring wire 9 b is attached to the side wall portion of the retainer 2 so as to elastically contact the peripheral surface of the damper support shaft 9, thereby preventing the damper support shaft 9 from rattling. . The damper plate 8 has a soft edge such as a sponge sheet attached to the edge thereof, and when closed, the soft edge is brought into contact with the inner peripheral surface of the air passage 2a to improve the sealing performance.

  As shown in FIGS. 4 and 5, the front movable louver 3 is disposed between the bezel 1 and the retainer 2 at the front part of the retainer 2, and the rear movable louver 4 is located behind (upstream) the front movable louver 3. Arranged. The front movable louver 3 has three front fins 3a arranged in a substantially horizontal direction (horizontal direction) at intervals, and each front fin 3a is connected to the left and right bearing portions via shafts on both sides. It is held rotatably.

  Moreover, one link bar is connected to the eccentric shaft projecting from one end of each front fin 3a, and all the front fins 3a are synchronized so that the direction can be changed up and down. Further, a slide knob 5 is fitted on the center front fin 3a so as to be slidable left and right, and the front movable louver 3 is tilted up and down by applying a finger to the slide knob 5 and slid left and right. A rear movable louver 4 described later is tilted left and right.

  As shown in FIGS. 4 and 5, the rear movable louver 4 has five rear fins 4a arranged at intervals in the vertical direction, and each rear fin 4a has an upper and lower shaft with respect to the bearing portion arranged vertically. It is hold | maintained so that rotation is possible. In addition, one link bar (not shown) is connected to an eccentric shaft protruding from one end of each rear fin 4a, and all the rear fins 4a can be synchronously changed in direction from side to side.

  The rear movable louver 4 is provided with a linkage portion such as an engagement shaft portion or a gear portion at the front portion of one rear fin 4a, and an engagement leg portion, a rack portion or the like provided at the rear portion of the slide knob 5. When the slide knob 5 is slid in the left-right direction by engaging with the linkage portion, the rear fin 4a is adjusted in the left-right direction.

  Thereby, the slide knob 5 adjusts the direction of each front fin 3a of the front movable louver 3 up or down by the up / down rotation operation, and the slide knob 5 performs the engagement portion by the left / right sliding operation. The left and right directions of the rear fins 4a of the rear movable louver 4 are adjusted to the left or right via.

  As shown in FIGS. 4 and 6, a knob support shaft is provided with a dial knob 10 projecting from the right side surface of the front portion of the retainer 2 in order to open and close the damper plate 8 disposed in the ventilation path 2 a. 20 and is pivotally supported so as to be rotatable. As shown in FIG. 2, the dial knob 10 has a semicircular dial portion 13 at the front portion of the knob body 11, and the dial portion 13 is a knob opening provided on the right side of the bezel 1 in a mounted state. It protrudes or is exposed from the portion 1b to the front surface.

  As shown in FIG. 10, the dial knob 10 is provided with a boss portion 12 in the center of a substantially disc-shaped knob body 11, and the boss portion 12 has a substantially rectangular shape for accommodating an operation load applying member 16. A box-shaped accommodation portion 12d is provided, and the operation load applying member 16 is accommodated and attached in the accommodation portion 12d.

  The knob body 11 is formed in a substantially circular frame shape including the dial portion 13, and a lever link portion 15 is projected from the opposite side of the dial portion 13. As shown in FIG. 10, the link member 7 is connected to the tip of the lever link portion 15, and the other end of the link member 7 is connected to the lever portion 9 a of the damper support shaft 9 of the damper plate 8. Thereby, when the dial knob 10 is rotated, the damper plate 8 is rotated via the lever link portion 15, the link member 7, and the lever portion 9a to open and close the ventilation path 2a.

  As described above, the dial knob 10 is provided with the boss portion 12 substantially at the center of the knob body 11, the boss portion 12 is provided with the box-shaped storage portion 12d, and the operation load applying member 16 is provided in the storage portion 12d. Is fixed. The operation load applying member 16 is formed in a rectangular plate shape from a thermoplastic elastomer such as polyolefin, polyurethane, styrene, ethylene, butylene, or a copolymer, or a polymer elastic body such as silicone rubber, and a shaft hole is formed in the center thereof. Is done. When the dial knob 10 is attached, the dial knob 10 is attached such that the knob knob 20 projecting on the retainer 2 side is fitted into the shaft hole of the operation load applying member 16 so as to be rotatable.

  As shown in FIG. 10, the boss portion 12 of the dial knob 10 is provided with a circumferential wall portion 12a so as to surround the operation load applying member 16 in the housing portion 12d, and on the outer circumferential surface of the circumferential wall portion 12a. Is a structure in which the convex portion 31 of the leaf spring member 30 on the retainer 2 side contacts with the dial knob 10 mounted on the knob support shaft 20. Thereby, when the dial knob 10 is rotated, a sliding friction resistance is generated between the convex portion 31 of the leaf spring member 30 and the circumferential wall portion 12a together with the friction resistance between the operation load applying member 16 and the knob support shaft 20, A stable operation load is applied by these frictional resistances. In addition, it can also comprise so that the convex part of a leaf | plate spring member may contact the internal peripheral surface of the circumferential wall part 12a.

  Further, on the outer peripheral surface of the circumferential wall portion 12a of the boss portion 12, there are recessed portions 12b at two predetermined angular positions (angular positions when the dial knob 10 is operated to the damper open position and the damper closed position). Is provided.

  On the other hand, as shown in FIG. 6, a spring accommodating portion 22 of a leaf spring member 30 is provided in the vicinity of the knob support shaft 20 provided on the side wall of the retainer 2, and in the spring accommodating portion 22, FIGS. A leaf spring member 30 as shown in FIG. As shown in FIG. 6, locking portions 22 a are formed on both sides of the spring accommodating portion 22, and when the leaf spring member 30 is inserted, U-shaped portions 33 provided at both ends of the leaf spring member 30 are formed. It has a structure that is locked to the locking portion 22a. Further, an outer annular wall 24 is provided so as to surround the outer side of the knob support shaft 20, and the circumferential wall portion of the boss portion 12 of the dial knob 10 is formed in the annular space 24 a (FIG. 6) inside the outer annular wall 24. 12a is rotatably inserted.

  As shown in FIGS. 11 and 12, the leaf spring member 30 is formed by bending a spring body of a belt-like metal plate, and a convex portion 31 is formed in a convex shape at a substantially central portion thereof. Further, a U-shaped portion 33 is formed at both end portions by bending it into a U-shape. Furthermore, the leaf spring member 30 is provided on both sides of the convex portion 31 so that inner bent portions 32 are bent inward, and an inclined surface 32 a is provided on the surface of the inner bent portion 32.

  Thus, the leaf spring member 30 is formed with an inclined surface 32a inclined inward from the upper surface of the convex portion 31 to both sides, and the circumferential wall portion 12a of the boss portion 12 is formed when the dial knob 10 is assembled. The spring member 30 has a structure that is not caught on the side edge. In this embodiment, the inner bent portion 32 is provided on both sides of the convex portion 31, but the inner bent portion 32 is located outside in a state where the leaf spring member 30 is placed in the spring accommodating portion 22. You may provide in the one side part of the convex part 31 only in the side.

  In other words, in the state where the leaf spring member 30 is inserted into the spring accommodating portion 22, the inner bent portion located inside the convex portion 31 (the inner side of the accommodating portion) does not come into contact with the boss portion 12 when fitted, and thus is unnecessary. Become. As shown in FIG. 11 and the like, the leaf spring member 30 has a symmetrical shape with the convex portion 31 as the center. Therefore, an inner bent portion may be provided on either side of the convex portion 31, but in the spring accommodating portion 22. In consideration of ease of work when the leaf spring member 30 is inserted into the leaf spring member 30, if the inner bent portions 32 are provided on both sides of the convex portion 31 as in the present embodiment, the operator can use the leaf spring member. The leaf spring member 30 can be attached without worrying about the vertical direction of the 30.

  As described above, the leaf spring member 30 having such a shape is inserted into the spring accommodating portion 22 in the vicinity of the knob support shaft 20 provided on the side wall of the retainer 2. The U-shaped portion 33 is locked to the locking portion 22a, and in this state, the convex portion 31 of the leaf spring member 30 faces the knob support shaft 20 side (the circumferential wall portion 12a side of the dial knob 10), and the dial knob 10 At the time of mounting, the convex portion 31 comes into contact with the outer peripheral surface of the circumferential wall portion 12a.

  Thereby, when the dial knob 10 is operated to the damper open position, the convex portion 31 of the leaf spring member 30 is engaged with the concave portion 12b of the circumferential wall portion 12a, and similarly, when the dial knob 10 is operated to the damper closed position. The convex portion 31 of the leaf spring member 30 is engaged with the concave portion 12b of the circumferential wall portion 12a so that a moderate feeling of moderation can be obtained at the closed position and the open position of the damper plate 8.

  When attaching the dial knob 10 to the retainer 2 at the time of assembling the register, first, the leaf spring member 30 is inserted into the spring accommodating portion 22 near the knob support shaft 20 provided on the side wall of the retainer 2. The U-shaped portions 33 at both ends are locked to the locking portions 22a in the spring accommodating portion 22, and the leaf spring member 30 is attached. Next, in the state where the operation load applying member 16 is mounted in the housing portion 12d of the boss portion 12, a shaft hole at the center of the operation load applying member 16 is formed on the knob support shaft 20 protruding from the side wall portion of the retainer 2. The dial knob 10 is attached so as to be fitted.

  At this time, the circumferential wall portion 12 a of the boss portion 12 of the dial knob 10 enters the outer peripheral portion of the knob support shaft 20 and enters the annular space 24 a (FIG. 6) inside the outer annular wall 24. Since the convex portion 31 of the spring member 30 protrudes into the annular space 24 a, the circumferential wall portion 12 a of the boss portion 12 easily comes into contact with the convex portion 31.

  In particular, the convex portion 31 of the leaf spring member 30 is very small, and the boss portion 12 of the dial knob 10 is blinded to the assembling operator, and the convex portion 31 of the leaf spring member 30 is difficult to see. The circumferential wall portion 12a is easily caught on the convex portion 31.

  However, since the inner bent portion 32 is provided on both sides of the convex portion 31 of the leaf spring member 30 so that the inner bent portion 32 is bent inward, the circumferential wall portion 12a of the boss portion 12 is not attached to the inner bent portion 32 when assembled. It enters the annular space 24a so as to slide on the inclined surface 32a. For this reason, the circumferential wall portion 12a of the boss portion 12 does not come into contact with the side edge portion of the convex portion 31 of the leaf spring member 30, and the boss portion 12 of the dial knob 10 smoothly moves to the outer periphery of the knob support shaft 20. It will be inserted in the part so that rotation is possible. And in this state, the convex part 31 of the leaf | plate spring member 30 attached to the spring accommodating part 22 of the knob support shaft 20 vicinity will be in the state which contacts the outer peripheral surface of the circumferential wall part 12a of the boss | hub part 12, or the recessed part 12b.

  On the other hand, as shown in FIG. 4, the damper plate 8 is inserted into the ventilation path 2 a of the retainer 2 so as to fit the shaft support 8 a provided at the end thereof from the inside, and from the hole 2 b on the side wall of the retainer 2, The damper plate 9 is attached in the ventilation path 2a by inserting the engaging portion 9c of the damper support shaft 9 and fitting it into the fitting portion 8b of the damper plate 8 from the outside. As a result, the damper plate 8 is pivotally supported by the shaft support portion 8a and the damper support shaft 9 so as to be vertically rotatable in the ventilation path 2a.

  Next, the link member 7 is connected between the lever link portion 15 of the dial knob 10 and the lever portion 9 a of the damper support shaft 9 of the damper plate 8. Accordingly, when the dial portion 13 of the dial knob 10 is rotated downward as shown in FIG. 15, the damper plate 8 is rotated so as to close the ventilation path 2a, and as shown in FIG. When the 10 dial portions 13 are rotated upward, the damper plate 8 is rotated so as to open the ventilation path 2a. When the damper plate 8 is closed and opened, the concave portion 12b of the circumferential wall portion 12a of the dial knob 10 is engaged with the convex portion 31 of the leaf spring member 30 on the knob support shaft 20 side, and the dial knob 10 is rotated. The user who clicks will have an appropriate click feeling (moderation feeling) at the time of closing and opening.

  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, as shown in FIG. 5, when the slide knob 5 is operated up or down, the front fin 3a of the front movable louver 3 rotates and the direction changes up and down. The air blowing direction is adjusted up and down.

  When adjusting the air blowing direction to the left and right, when the slide knob 5 is slid to the right or left, the rear fin 4a of the rear movable louver 4 rotates about its upper and lower rotation shafts, The direction changes in a predetermined angle range, and the air blowing direction is adjusted to the left and right as shown in FIG.

  When the air flow is stopped or restricted, or conversely, the ventilation path 2a is opened, the dial knob 10 on the front left side of the bezel 1 is pushed up or down with a finger or the like to rotate. At this time, the dial knob 10 rotates about the knob support shaft 20, and the turning force is transmitted to the damper plate 8 via the link member 7.

  When the dial knob 10 is turned, an appropriate frictional resistance is generated between the outer peripheral surface of the knob support shaft 20 and the inner peripheral surface of the operation load applying member 16, and the outer peripheral surface of the circumferential wall portion 12a of the boss portion 12 is supported by the knob support. Since the contact with the convex portion 31 of the leaf spring member 30 in the vicinity of the shaft 20, the frictional resistance due to the contact is generated stably, and thereby an appropriate operation load is stabilized for the turning operation of the dial knob 10. Will be granted.

  Further, since the operation load at the time of turning the dial knob 10 is generated by the frictional resistance of the leaf spring member 30 together with the operation load applying member 16, even if any one of the frictional resistances is reduced, the necessary frictional resistance is generated. Therefore, the operation load can be generated stably. Furthermore, since the convex part 31 of the leaf | plate spring member 30 is made to contact the circumferential wall part 12a of the outer peripheral part of the boss | hub part 12, the radius of the circumferential wall part 12a can be made comparatively small, and, thereby, the dial knob 10 It is possible to generate a stable frictional resistance, that is, an operation load in the entire rotation angle range.

  The turning force of the dial knob 10 is transmitted from the lever link portion 15 to the damper plate 8 via the link member 7, the lever portion 9 a, and the damper support shaft 9. Accordingly, as shown in FIG. 15, when the dial knob 10 is rotated downward, the damper plate 8 is rotated in the closing direction of the ventilation path 2a, and the circumferential wall of the boss portion 12 is in the closed position. Since one concave portion 12b of the portion 12a is engaged with the convex portion 31 of the leaf spring member 30, the user can obtain a good moderation feeling when the damper is closed.

  As shown in FIG. 16, when the dial knob 10 is rotated upward, the damper plate 8 rotates in the opening direction of the ventilation path 2a, and the circumferential wall portion 12a of the boss portion 12 at the opening position. Since the other concave portion 12b engages with the convex portion 31 of the leaf spring member 30, the user can obtain a good moderation feeling when the damper is opened.

  Thus, when the dial knob 10 is assembled, when the boss portion 12 of the dial knob 10 is fitted into the knob support shaft 20 provided on the side wall of the retainer 2, the peripheral surface portion of the circumferential wall portion 12a of the boss portion 12 is Since it fits in contact with the inclined surface 32 a of the inner bent portion 32 provided on the side portion of the convex portion 31 of the leaf spring member 30, the circumferential wall portion 12 a of the boss portion 12 of the dial knob 10 is on the side of the leaf spring member 30. The problem of being caught on the edge is prevented, and the boss portion 12 of the dial knob 10 can be smoothly inserted into the proper position with respect to the knob support shaft 20, so that the workability of assembling the dial knob 10 can be improved.

  In the above-described embodiment, an example in which the dial knob 10 is used for operating the damper plate 8 has been described. However, the dial knob device of the present invention is used for rotating the front movable louver and the rear movable louver. You can also.

1 Bezel 1a Air outlet 1b Knob opening 2 Retainer 2a Ventilation path 2b Hole 3 Front movable louver 3a Front fin 4 Rear movable louver 4a Rear fin 5 Slide knob 7 Link member 8 Damper plate 8a Shaft support 8b Fitting 9 Damper support shaft 9a Lever portion 9b Spring wire 9c Locking portion 10 Dial knob 11 Knob body 12 Boss portion 12a Circumferential wall portion 12b Recess 12d Housing portion 13 Dial portion 15 Lever link portion 16 Operation load applying member 20 Knob support shaft 22 Spring housing Part 22a Locking part 24 Outer annular wall 24a Annular space 30 Member 31 Convex part 32 Inner bent part 32a Inclined surface 33 U-shaped part

Claims (4)

In the dial knob device of the register, the dial knob for operation is pivotally supported by a part of the retainer via a knob support shaft and a boss part fitted to the knob support shaft.
The knob body of the dial knob is provided with the boss portion having a shaft hole, the outer peripheral portion of the boss portion is provided with a circumferential wall portion, and the knob support shaft is provided on a part of the retainer,
A leaf spring member having a convex portion is attached in the vicinity of the knob support shaft with the convex portion in contact with the circumferential surface of the circumferential wall portion, and the convex portion of the leaf spring member is disposed on the circumferential surface of the circumferential wall portion. A recess is provided with which the part can be engaged,
A register dial knob device, wherein an inner bent portion is provided on at least one side of the convex portion of the leaf spring member so as to be inclined toward the inner side of the convex portion.   The leaf spring member is provided with a U-shaped portion bent in a substantially U-shape on both sides of the spring body, and a convex portion bent in an arc shape is provided in the approximate center of the spring body. The dial knob device of the register according to claim 1.   A spring accommodating portion for assembling the leaf spring member is provided in the vicinity of the knob support shaft, and a locking portion for engaging the U-shaped portions on both sides of the leaf spring member is provided in the spring accommodating portion. The register dial knob device according to claim 2. The boss portion of the dial knob is provided with an accommodating portion, and an operation load applying member of a polymer elastic body having a shaft hole is accommodated in the accommodating portion, and the dial knob applies an operation load to the knob support shaft. 2. The dial knob device for a register according to claim 1, wherein a shaft hole of the member is fitted, and the peripheral surface of the circumferential wall portion is pivotally supported by contacting the convex portion of the leaf spring member.

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