JP6873793B2 - register - Google Patents

Description

The present invention relates to a register mainly used for adjusting the air outlet of an air conditioner such as an automobile, and is particularly a round shape having a cylindrical retainer and a substantially circular air outlet and a damper device provided in a ventilation passage. Regarding the register of.

Conventionally, as a round register having a circular air outlet in a cylindrical frame, a register having a structure in which a cylindrical barrel is supported in a cylindrical frame so as to be tiltable up, down, left and right around the center of the air outlet. However, it is known from Patent Document 1 below.

A plurality of fixed fins are radially provided inside the cylindrical barrel of this register, and an operation knob of the damper device is rotatably supported at the center of the barrel so as to be rotatable around the center. The rotation shaft of the operation knob is connected to the central rotation shaft supported in the center of the case via a universal joint, and a bevel gear is attached to the end of the central rotation shaft. The gear rotates.

Further, a damper device provided with a semi-circular damper is arranged on the upstream side of the barrel in the ventilation passage so that the ventilation passage can be opened and closed. A pair of semi-circular dampers are pivotally supported in this damper device so that the ventilation passage can be opened and closed, and the rotation axis of each semi-circular damper is linear in the ventilation passage in the center of the transverse direction orthogonal to the ventilation direction. Placed and supported in. Each pair of semi-circular dampers of the damper device is connected so that the rotation axis is positioned on the string portion (straight line portion) in a straight line and is rotatably supported by each other within a range of about 90 °. Then, both end portions of the rotating shaft are rotatably supported on the wall portion of the case. A bevel gear piece is integrally formed with the semi-circular damper in the vicinity of the rotation shaft of the semi-circular damper.

The bevel gear piece provided near the rotation shaft of each semi-circular damper meshes with the bevel gear, and by rotating the operation knob, the rotational power is transmitted to the central rotation shaft via the universal joint. , The rotation of the central rotation shaft rotates a pair of semicircular dampers in the opposite directions within a range of about 90 via the bevel gear and the bevel gear piece, and opens and closes the dampers.

In the register having the above configuration, a bevel gear is provided at the end of the central rotation shaft connected to the ball of the universal joint, and the central rotation shaft is used as a case with the bevel gear meshing with the bevel gear piece of the semicircular damper. On the other hand, since the structure is pivotally supported by the bearing portion, the operating load of the operating knob is likely to vary from product to product due to variations in component dimensions, and rattling is likely to occur in the rotating operation of the operating knob due to aging or the like.

Japanese Unexamined Patent Publication No. 2016-159721

For this purpose, the damper device of the register is formed with a soft friction member such as a polymer elastomer coated on the outer periphery of the ball of the universal joint, and a coil spring for urging the ball of the universal joint to the socket side is provided. It is fitted on the outer periphery of the central rotation shaft. This register prevents the occurrence of rattling and abnormal noise (gritty feeling) in the rotation transmission mechanism of the operation knob by covering the coil spring and the ball with a frictional resistance member, and also applies an operation load to the operation knob. ing.

However, when the elastomer is coated on the ball of the universal joint, two-color molding is performed at the time of molding the ball, and it is necessary to assemble a small coil spring to the central rotation shaft as a separate part, which increases the number of parts. There is a problem that the manufacturing cost becomes high due to the increase in the assembly man-hours.

The present invention has been made in view of the above points, and an object of the present invention is to provide a register capable of preventing rattling and abnormal noise of a rotation transmission mechanism for rotating a damper device at low cost. To do.

In order to achieve the above object, the registers of the present invention are
A barrel having a cylindrical frame and fixed fins is tiltably arranged in a retainer that is cylindrical and has a ventilation passage, a knob shaft support is provided in the center of the barrel, and an operation knob is provided in front of the knob shaft support. Is rotatably supported, a damper device is mounted in the ventilation path on the upstream side of the barrel, and the damper device opens and closes the ventilation path via a rotation transmission mechanism by rotating the operation knob. In the register
The rotation transmission mechanism of the operation knob is connected to the back surface of the operation knob, and a ball shaft member of a ball joint having a ball at the tip, a socket member fitted to the ball, and the socket member are connected to the retainer. A socket support member that is rotatably supported on the central shaft branch of the ball and has a synthetic resin bevel gear attached to the tip.
The ball shaft member, on the center line of the blowing direction parallel to the barrel within the barrel, rotatably supported by said knob shaft bearing of the barrel,
The damper device has a pair of semicircular dampers each having a shaft portion provided on a straight portion, and each shaft portion is provided with a bevel gear piece that meshes with the bevel gear, and the shaft portion of the straight portion of each semicircular damper is provided. It is configured to open and close the ventilation path by rotating around the center in opposite directions.
A gear mounting shaft is projected from the central shaft position of the socket support member, a gear support portion that penetrates and supports the gear mounting shaft is provided at the central shaft support portion, and an end portion of the gear support portion is provided. An annular support surface is provided,
It said bevel gear, to the gear attaching shaft projecting to the damper device side through the gear support portion is connected to fitting the gear shaft portion, a plurality of resilient arms on the outer peripheral portion of the gear shaft portion integrally It is molded and the elastic arm is in contact with the support surface of the gear support portion.

Here, in this specification, the front portion, the rear portion, the downstream side, and the upstream side of the register are such that the front portion is the downstream side of the ventilation path and the rear portion is the upstream side.

According to the register of the present invention, when the operation knob at the center of the barrel is turned, the rotational power of the operation knob is transmitted to the damper device via the ball joint of the rotation transmission mechanism, the socket member, the bevel gear, and the bevel gear piece, and a pair The semi-circular damper rotates around the shaft in the opening direction or the closing direction to open and close the ventilation path.

At this time, since the elastic arm provided on the gear shaft portion of the bevel gear elastically contacts the support surface of the gear support portion and slides, rattling during the rotation operation is eliminated, an appropriate operating load is generated, and the operation is smooth. The damper can be opened and closed with a comfortable operation feeling.

Further, since the bevel gear is always urged to one side of the bevel gear by the urging force of the elastic arm, it is possible to eliminate the gap between the bevel gear and the bevel gear piece, thereby preventing backlash and abnormal noise due to backlash. .. Therefore, it is not necessary to apply grease to prevent the bevel gear from generating abnormal noise, and the grease application process can be eliminated to reduce the manufacturing cost.

Furthermore, it is not necessary to externally fit a coil spring to the shaft of a ball joint or bevel gear as in the past, reducing the number of parts and eliminating the work of assembling a small coil spring, making it possible to manufacture registers at low cost. it can.

Here, it is preferable to provide a hemispherical convex portion at the tip of the elastic arm so that the hemispherical convex portion comes into contact with the support surface of the gear support portion. According to this, it is possible to reduce the sliding frictional resistance between the elastic arm and the gear support portion generated during the damper opening / closing operation, and to prevent the occurrence of abnormal noise and rattling feeling.

Further, here, it is preferable that the shape of the elastic arm is formed so that the thickness in the vicinity of the tip portion is relatively thinner than the thickness of the base portion. According to this, an appropriate elastic force can be generated in the elastic arm.

Further, here, the shaft portions of the pair of semicircular dampers are arranged linearly along the axial direction of the shaft portions and are rotatably connected to each other so that one of the connecting portions of the shaft portions abuts. A plurality of point-shaped convex portions are provided on the surface, and a plurality of point-shaped convex portions are provided on one contact surface of the connecting portion of the shaft portion, and the point-shaped convex portions hit the other contact surface. It is preferable to configure them so as to be in contact with each other. According to this, the sliding friction resistance of the contact surface of the connecting portion of the shaft portion is reduced, and the abnormal noise and the gritty feeling that are likely to occur in the shaft portion of the pair of semicircular dampers during the opening / closing operation of the dampers are prevented. The damper device can be opened and closed smoothly.

Further, here, it is preferable to continuously provide small uneven portions on the arcuate edge portions of the pair of semicircular dampers. As a result, it is possible to prevent the vortex flow that tends to occur when the air flow passes through the narrow gap between the inner peripheral wall surface of the retainer and the edge of the semicircular damper, and prevent the generation of abnormal noise such as whistling sound. ..

Further, here, the socket member is composed of a pair of half-split socket members divided into two, and engages with a locking hole that is fitted and locked to the contact surface of the half-split socket member. A stop pin is provided, and a pair of the half-split socket members are fitted together with the corresponding contact surfaces by fitting the locking hole and the locking pin in a state where the ball is inserted into the inner ball hole. It can be configured as such. Further, the pair of half-split socket members are molded as a load-applying member with a soft synthetic resin, and the half-split ball holes provided inside the half-split socket members cover a surface area wider than the hemispherical portion of the ball. It is preferable to form the above.

According to this, an appropriate operating load can be satisfactorily applied to the socket member during the tilting operation of the barrel, and further, each component including the ball joint can be easily assembled, and the ball and the socket member can be easily assembled. The mated state of the above can be reliably held without providing another elastic urging means or the like.

According to the register of the present invention, when the damper device is opened and closed by turning the operation knob, rattling and abnormal noise generated in the rotation transmission mechanism are prevented by a mechanism with a small number of parts, and the register can be manufactured at low cost. can do.

It is a front view of the register which shows one Embodiment of this invention. It is a right side view of the register. It is a rear view of the register. It is a perspective view of the register. It is a perspective view seen from the back of the register. It is an exploded perspective view of a register. It is a perspective view of the state in which the bevel gear, the socket support member, the socket member, and the ball shaft member are assembled in the retainer. It is a perspective view seen from the back of the state in which the bevel gear, the socket support member, the socket member, and the ball shaft member are assembled in the retainer. (A) is a perspective view of the retainer, and (b) is a perspective view seen from the back surface of the retainer. (A) is a perspective view of the barrel, and (b) is a perspective view seen from the back surface of the barrel. (A) is a perspective view in a state where the ball shaft member is attached to the barrel, and (b) is a perspective view seen from the back surface of the barrel. It is a perspective view which shows the rotation transmission mechanism of the operation knob to a damper device. (A) is a perspective view in a state where the operation knob and the rotation transmission mechanism are assembled, and (b) is a plan view thereof. (A) is a perspective view of a ball shaft member, a socket member, and a socket support member assembled, (b) is a perspective view seen from the back side thereof, and (c) is a plan view thereof. (A) is a perspective view of the ball shaft member and the socket member assembled, (b) is a sectional view thereof, and (c) is an exploded perspective view thereof. It is a perspective view when assembling a ball shaft member and a socket member to a socket support member. It is an exploded plan view of a ball shaft member, a socket member, and a socket support member. (A) is a perspective view of the socket support member as viewed from the back surface, (b) is a perspective view of the ball shaft member, and (c) is a perspective view of the operation knob. It is an exploded perspective view of the operation knob, the load-applying member, the barrel, the ball shaft member, the socket member, and the socket support member. (A) is a front view of the bevel gear, (b) is a left side view thereof, (c) is a perspective view thereof, and (d) is an enlarged front view showing the width dimension of the elastic arm of the bevel gear. (A) An exploded perspective view of the damper device, (b) is an exploded perspective view of the damper device with a different viewing angle, and (c) is an exploded front view thereof. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a sectional view taken along the line CC of FIG. It is a cross-sectional view of BB of FIG. It is sectional drawing in the state which the barrel is tilted upward. It is sectional drawing in the state which the damper device is closed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 6 show a round register for air conditioning installed in the passenger compartment of an automobile. In the illustrated register, a central shaft support 2 is provided at the center of the cylindrical retainer 1, and the barrel 3 is supported by the central shaft support 2 so as to be tiltable up, down, left, and right. A substantially cylindrical knob shaft support 5 is provided in the center of the front portion of the barrel 3, and the operation knob 6 is rotatably supported on the front portion of the knob shaft support 5. A circular air outlet 29 is formed at the front portion of the barrel 3. As shown in FIG. 6, an annular bezel 7 is fitted to the front end portion of the retainer 1 by locking the locking claw to the locking portion on the retainer 1 side.

As shown in FIGS. 10 and 11, the barrel 3 has a cylindrical cylindrical frame 3a on the outer peripheral portion, and the cylindrical frame 3a is formed by being curved in the axial direction so as to form a part of a spherical surface. As shown in FIG. 24, the front inner peripheral surface in the retainer 1 is formed to be curved so as to form a part of a spherical surface corresponding to the cylindrical frame 3a. Further, as shown in FIGS. 6 and 7, an arcuate engaging groove portion 1d is formed in the front-rear direction from the upper portion in the retainer 1 to the upper portion in the bezel 7, and the engaging convex portion 3c protrudes from the upper portion of the barrel 3. Will be set up.

The barrel 3 is assembled by engaging the engaging convex portion 3c with the engaging groove portion 1d on the retainer 1 side so as to be tiltable. The knob shaft support 5 provided at the center of the barrel 3 is attached to the central shaft support 2 of the retainer 1 via a ball joint (universal joint) 8 so as to be tiltable up, down, left and right. When the barrel 3 is tilted to the left or right while the barrel 3 is tilted upward, the barrel 3 is tilted to the left or right about the line connecting the engaging convex portion 3c and the ball 111.

As shown in FIG. 23, a ventilation passage 9 is formed in the retainer 1, and a damper device 20 having a pair of semicircular dampers 21 and 22 is arranged on the rear upstream side in the ventilation passage 9. The damper device 20 is provided so that when the operation knob 6 is rotated, its rotational power is input via the rotation transmission mechanism 10 to open and close the ventilation passage 9. As shown in FIG. 9, bearing holes 1a of the damper device 20 are provided on both sides of the side wall portion of the retainer 1, and the tips of the shaft portions 23 and 24 of the semicircular dampers 21 and 22 in the damper device 20 can be rotated. It is fitted into the bearing holes 1a on both sides. As shown in FIG. 26, for example, as shown in FIG. 26, the pair of semicircular dampers 21 and 22 of the damper device 20 opens their tips on both sides when receiving rotational power in the opening direction by rotating the operation knob 6. It is configured to rotate and close the ventilation passage 9.

A large-diameter annular frame 1c is provided in the ventilation passage 9 of the retainer 1 via the radial frame 1b, and a cylindrical central shaft support 2 is arranged at the inner center position of the annular frame 1c. The central shaft support 2 is configured to tiltably support the knob shaft support 5 at the center of the barrel 3 and pivotally support the rotation transmission mechanism 10 of the damper device 20 inside.

As shown in FIG. 9, the central shaft support portion 2 is formed by providing a flange portion inside the cylinder, and a gear support portion 2a that rotatably supports the bevel gear 15 is provided in the flange portion. Further, as shown in FIG. 9B, a support surface 2b with which the elastic arm 17 of the bevel gear 15 abuts is formed on the gear support portion 2a on the back surface side of the flange portion. Further, the central shaft support portion 2 is provided with an engaging groove 2c with which the engaging claw 13a provided on the socket support member 13 of the ball joint 8 engages.

As shown in FIG. 12, the rotation transmission mechanism 10 for transmitting the rotational power to the damper device 20 is from the ball shaft member 11, the socket member 12, the socket support member 13, the bevel gear 15, and the bevel gear pieces 25, 26 of the ball joint 8. It is configured, and when the operation knob 6 is rotated, the turning power is transmitted to the damper device 20.

When the socket support member 13 of the ball joint 8 is rotatably fitted in the central shaft support 2, the engaging claw 13a provided on the socket support member 13 is rotatably engaged within a predetermined angle range. Engage in groove 2c (FIG. 9). At this time, the gear mounting shaft 14 having a modified cross section provided at the tip of the socket support member 13 penetrates the central hole of the gear support portion 2a and projects to the back side, that is, to the side of the damper device 20. Then, the gear shaft portion 16 of the bevel gear 15 is fitted to the tip of the gear mounting shaft 14.

As shown in FIG. 20, a deformed hole is formed in the gear shaft portion 16, the gear mounting shaft 14 having a deformed cross section is inserted into the deformed hole of the gear shaft portion 16, and the bevel gear 15 rotates integrally with the gear mounting shaft 14. It is fitted so that it does. As shown in FIG. 14, the gear mounting shaft 14 is formed in a hollow shape that can be elastically deformed in the radial direction, and the gear shaft portion 16 of the bevel gear 15 can be easily fitted onto the gear mounting shaft 14.

On the other hand, as shown in FIG. 20, three elastic arms 17 are projected on the outer peripheral portion of the gear mounting shaft 14 of the bevel gear 15 at intervals of 120 ° so as to be elastically deformable in the axial direction. Small-diameter hemispherical convex portions 17a are provided at the tips of the three elastic arms 17, and these hemispherical convex portions 17a come into contact with the support surface 2b of the gear support portion 2a of the central shaft support portion 2 in the assembled state. As a result, the bevel gear 15 is urged to the anti-central shaft support 2 side, that is, the bevel gear pieces 25 and 26 side of the damper device 20 with elastic force.

Further, as shown in FIG. 20D, the shape of each elastic arm 17 is curved and formed longer, and the width dimension L2 of the tip portion thereof is formed shorter than the width dimension L1 of the base portion thereof. To. As a result, the tip end side of the elastic arm 17 is formed so as to be easily bent. Due to the elastic bending action of the elastic arm 17, the bevel gear 15 is urged toward the bevel gear pieces 25 and 26 with spring-like elasticity. Therefore, the gap between the bevel gear 15 and the bevel gear pieces 25 and 26 is eliminated to prevent backlash of the bevel gear 15.

As shown in FIGS. 10 and 11, the barrel 3 has a plurality of fixed fins 4 radially arranged between the cylindrical frame 3a and the central knob shaft support 5, and the radial fixed fins 4 are in the middle thereof. The portions are connected to each other by the annular fins 4a and held. The knob shaft support 5 is formed so as to rotatably support the operation knob 6 fitted from the front portion thereof around the shaft and within a predetermined angle range.

As shown in FIG. 18C, a pair of locking claws 6a are projected on the back side of the operation knob 6, and the operation knob 6 opens the locking claw 6a in an arc shape of the knob shaft support 5. It is attached by inserting it through the portion 5a. The locking claw 6a of the operation knob 6 projects toward the back surface side of the knob shaft support portion 5 and is locked in the locking hole 118 of the disk portion 114 of the ball shaft member 11 attached to the back surface side. As a result, the operation knob 6 is rotatably supported with respect to the knob shaft support portion 5 of the barrel 3 within a predetermined angle range (angle range of the arcuate opening 5a), and the rotational power of the operation knob 6 is the ball joint 8. Is transmitted to the ball shaft member 11.

As shown in FIGS. 12 and 13, the ball joint 8 includes a ball shaft member 11, a socket member 12 that fits into the ball 111 at the tip of the ball shaft member 11, and a socket support member 13 that supports the socket member 12. The bevel gear 15 is attached to the gear attachment shaft 14 projecting from the tip of the socket support member 13. As shown in FIGS. 7 and 8, the socket support member 13 is rotatably inserted and supported in the central shaft support 2 in the retainer within a predetermined angle range.

As shown in FIGS. 15 to 18, the ball shaft member 11 of the ball joint 8 is integrally molded with a synthetic resin by providing a ball 111 at the tip of the shaft portion 115 and a disk portion 114 at the end of the shaft portion 115. .. Two engaging pins 112 are projected from the ball 111, and the ball shaft member 11 can be tilted in the socket member 12 by engaging the engaging pins 112 with the engaging grooves provided in the socket member 12. However, the structure is such that the rotational force around the axis of the ball shaft member 11 is transmitted to the socket member 12.

Further, as shown in FIG. 18, a plurality of small circular recesses 113 are formed on the outer peripheral portion of the ball 111. These circular recesses 113 adjust the frictional resistance between the ball 111 and the ball hole 12a of the socket member 12. On the other hand, as shown in FIGS. 14 and 15 (c), the disk portion 114 at the end of the ball shaft member 11 is provided with a locking hole 118 into which the locking claw 6a of the operation knob 6 is inserted and locked. The elastic holding portion 116 is provided on the outer peripheral portion of the disk portion 114, and the protrusion 117 is projected from the tip of the elastic holding portion 116.

As shown in FIG. 11, the ball shaft member 11 of the ball joint 8 is inserted into the knob shaft support 5 of the barrel 3 from the back surface side, and at this time, the elastic holding portion 116 of the disk portion 114 is inside the knob shaft support 5. Located in. A protrusion 117 is provided at the tip of the elastic holding portion 116 of the disk portion 114 to generate a click feeling (moderation feeling), and in the assembled state, contacts and slides on the inner peripheral surface of the knob shaft support portion 5. A convex portion 5b (FIG. 10b) is projected from the inner peripheral surface of the knob shaft support portion 5 at a position where the ball shaft member 11 reaches the damper closing position. As a result, when the damper device 20 is closed by turning the operation knob 6, the protrusion 117 rides over the convex portion 5b on the inner peripheral surface at the tip of the elastic holding portion 116 to generate a click feeling. Further, as shown in FIG. 18B, a fan-shaped recess 119 is formed on the outer peripheral portion of the disk portion 114 to regulate the rotation angle range of the ball shaft member 11.

As shown in FIG. 15, the ball hole 12a of the socket member 12 is fitted on the outside of the ball 111 of the ball shaft member 11 so as to be tiltable within a predetermined angle range. As shown in FIG. 15C, the socket member 12 is composed of a pair of half-split socket members 12b, 12c divided into two, and is fitted to each other on the contact surfaces of the half-split socket members 12b, 12c. A locking hole 12e and a locking pin 12d are provided. Hemispherical ball holes are formed inside the pair of half-split socket members 12b and 12c, respectively, and these are overlapped to form the ball holes 12a.

Further, as shown in FIG. 15C, the ball joint 8 is provided with an engaging groove 12f in which the engaging pin 112 of the ball 111 is engaged in the ball hole 12a, and the ball shaft member 11 is provided in the vertical and horizontal directions. When the ball shaft member 11 is rotated around the shaft while allowing tilting to, the rotational force is transmitted to the socket member 12 side.

As shown in FIG. 15, the pair of half-split socket members 12b and 12c have the locking holes 12e with the balls 111 of the ball shaft members 11 arranged inside and the balls 111 positioned in the ball holes 12a. And the locking pin 12d are fitted to each other, and the contact surfaces of the half-split socket members 12b and 12c are aligned and fitted.

Further, the pair of half-split socket members 12b and 12c are molded as load-applying members by a soft synthetic resin such as a thermoplastic elastomer (poleolefin, polyurethane, styrene, ethylene, butylene, copolymer). As a result, an appropriate frictional resistance is generated between the ball 111 and the inner peripheral surface of the ball hole 12a, and an appropriate operating load is applied by the socket member 12 when the barrel 3 is tilted, so that a rugged feeling is not generated. It is said that.

Further, as shown in FIG. 15B, the half-split ball holes 12a provided inside the half-split socket members 12b and 12c are formed so as to cover a surface area wider than the hemispherical portion of the ball 111. As a result, the socket members are fitted with the pair of half-split socket members 12b, 12c fitted to the outer peripheral portion of the ball 111 of the ball shaft member 11 with both half-split socket members 12b, 12c fitted to each other. The ball 111 is securely held in the ball hole 12a of the 12 to prevent the ball 111 from coming off.

In such a ball joint 8, each component can be easily assembled, and the ball shaft member can be adjusted to the fitted state of the ball 111 and the socket member 12 by another elastic urging means such as a coil spring. Can be reliably held without providing an urging means such as pressing the ball against the socket member side.

As shown in FIG. 16, a socket support member 13 made of hard synthetic resin is fitted to the outside of the socket member 12 of the ball joint 8. The socket support member 13 is formed in a substantially cup shape so as to cover and fit the outside of the socket member 12, a gear mounting shaft 14 is projected from the tip on the back side, and a bevel gear 15 is provided on the gear mounting shaft 14. The gear shaft portion 16 is fitted.

As shown in FIG. 16, a plurality of locking claws are projected on the outer surface of the socket member 12, and a plurality of locking portions for locking the locking claws on the outer surface of the socket member 12 are provided inside the socket support member 13. It is formed at a predetermined angular position. As a result, when the socket support member 13 is fitted to the outer peripheral portion of the socket member 12, the locking claw and the locking portion are fitted at a fixed angle position, whereby the socket support member is fitted to the ball shaft member 11. 13 is held at a constant angular position.

The cross section of the gear mounting shaft 14 is formed in a deformed cross section such as a rectangle, and as shown in FIG. 20, the gear mounting shaft 14 is fitted by simply inserting the gear mounting shaft 14 into the gear shaft portion 16 of the bevel gear 15 having the deformed hole. It has a possible structure. Further, as shown in FIG. 14, the gear mounting shaft 14 is formed so as to have an elastic flexed portion by forming the inside in a hollow shape, thereby facilitating the fitting of the bevel gear 15.

As shown in FIG. 7, the socket support member 13 is rotatably fitted in the central shaft support 2 of the retainer 1 within a predetermined angle range, and for this purpose, a pair on the back surface side of the socket support member 13. The engaging claw 13a of the above is projected. As shown in FIG. 9A, an engaging groove 2c is provided in the central shaft support 2 at a position corresponding to the engaging claw 13a, and when the socket support member 13 is inserted into the central shaft support 2, the engaging groove 2c is provided. A pair of engaging claws 13a of the socket support member 13 engages with the engaging groove 2c, and the engaging claws 13a engage with the edge portion. As a result, the fitting of the socket support member 13 and the central shaft support 2 is maintained, and the socket support member 13 is rotatably held in a predetermined angle range with respect to the central shaft support 2.

As shown in FIG. 9B, a flange-shaped gear support portion 2a is formed on the back surface of the central shaft support portion 2 of the retainer 1, and a support surface 2b for the bevel gear 15 is formed on the back surface of the gear support portion 2a. To. As described above, the hemispherical convex portion 17a of the elastic arm 17 provided on the gear shaft portion 16 of the bevel gear 15 comes into contact with the support surface 2b, whereby the bevel gear 15 is moved to the back side, that is, the semicircular shape of the damper device 20. The dampers 21 and 22 are urged toward the bevel gear pieces 25 and 26 to prevent backlash of the bevel gear 15.

As shown in FIGS. 18C and 19, the operation knob 6 is formed in the shape of a dial knob that can be rotated, and a pair of locking claws 6a are projected on the back side, and the cylindrical frame 3a of the barrel 3 is provided. It is rotatably attached to the knob shaft support 5 provided in the center of the above in a predetermined angle range.

As shown in FIG. 10, an arcuate opening 5a is formed in the flange of the knob shaft support 5, and the locking claw 6a of the operation knob 6 is inserted into the arcuate opening 5a. Further, as shown in FIG. 19, the locking claw 6a of the operation knob 6 is inserted into the locking hole 118 provided in the disk portion 114 of the ball joint 8 inserted into the knob shaft support portion 5 from the back surface side of the barrel 3. It is plugged in and locked. When assembling the operation knob 6, as shown in FIG. 19, a load-applying member 19 made of an annular soft synthetic resin such as a thermoplastic elastomer is formed between the operation knob 6 and the flange portion of the knob shaft support 5. When the operation knob 6 is rotated by being inserted, an appropriate operating load is applied by the frictional resistance thereof.

As shown in FIGS. 22 and 23, the damper device 20 is arranged on the upstream side of the barrel 3 in the ventilation passage 9 of the retainer 1. As shown in FIG. 21, the damper device 20 is configured to have a pair of semicircular dampers 21 and 22 having shaft portions 23 and 24 respectively provided in a straight line portion so as to be rotatable. Bevel gear pieces 25 and 26 that mesh with the bevel gear 15 are integrally formed on the shaft portions 23 and 24 of the straight portions of the semicircular dampers 21 and 22.

As shown in FIG. 21, the shaft portions 23 and 24 provided on the straight portions of the pair of semicircular dampers 21 and 22 have a connecting shaft 24d projecting from the axial center position of one shaft portion 24 and the other shaft portion. A connecting hole 23b is provided at the shaft support position of the 23, and the connecting shaft 24b is inserted into the connecting hole 23b and connected. The pair of semicircular dampers 21 and 22 are configured to rotate around the shaft portions 23 and 24 in an angle range of about 90 ° in the opposite directions to open or close the ventilation passage 9.

In the pair of semicircular dampers 21 and 22 of the damper device 20, the end portions of the shaft portions 23 and 24 are fitted into the bearing holes 1a (FIG. 9) provided on the side wall of the retainer 1 to rotatably support the shaft. Will be done. As a result, as shown in FIG. 24, the damper device 20 opens the ventilation passage 9 when the pair of semicircular dampers 21 and 22 rotate to a state parallel to the ventilation direction, and as shown in FIG. 26, the damper device 20 is half-circular. When the circular dampers 21 and 22 rotate in a direction increasing the angle between them and the outer peripheral edges of the semicircular dampers 21 and 22 rotate until they come into contact with the wall surface in the retainer 1, the ventilation passage 9 is closed.

Further, as shown in FIG. 22, the shaft portions 23, 24 of the pair of semicircular dampers 21 and 22 are arranged linearly along the axial direction of the shaft portions as described above, and can rotate with each other. Is connected to. As shown in FIG. 21, small uneven portions 21a and 22a are provided on the arc peripheral portions of the semicircular dampers 21 and 22. Further, the uneven portion 24c is provided on the shaft portion 24 of the semicircular damper 22, and the uneven portion 21b is provided on the straight portion of the corresponding semicircular damper 21. The small uneven portions 21a and 22a and the uneven portions 21b and 24c prevent the generation of eddy currents that are likely to occur when the air flow flows through the narrow gap between the inner peripheral wall surface of the retainer 1 and the edges of the semicircular dampers 21 and 22. However, this prevents the generation of abnormal noise such as whistling noise.

Further, a contact surface 23a is provided on the connecting portion of one shaft portion 24, and a plurality of point-shaped convex portions 23c are provided on the other shaft portion 23. As a result, as shown in FIG. 22, when the damper device 20 is assembled in the retainer 1, the point-shaped convex portion 23c of one shaft portion 23 comes into contact with or comes into contact with the contact surface 24a of the other shaft portion 24. .. This reduces the sliding frictional resistance between the shafts 23 and 24, and prevents rattling, abnormal noise, and rattling that are likely to occur on the shafts 23 and 24 of the pair of semi-circular dampers when the dampers are opened and closed. , The damper device 20 can be opened and closed smoothly.

When assembling the register having the above configuration, first, as shown in FIG. 15, the half-split socket members 12b and 12c of the socket member 12 are fitted into the ball 111 of the ball shaft member 11 from above and below, and the locking holes thereof are fitted. The locking pin 12d is fitted into the 12e to fit the ball shaft member 11 and the socket member 12.

Further, as shown in FIG. 16, the socket support member 13 is fitted to the outside of the socket member 12, and the ball joint 8 is assembled. In this state, the ball shaft member 11 is assembled to the socket member 12 and the socket support member 13 so as to be tiltable up, down, left, and right.

Next, the ball joint 8 is inserted into the front portion of the central shaft branch 2 in the retainer 1, and the gear mounting shaft 14 of the ball joint 8 is projected toward the rear side of the central shaft branch 2. In this state, the gear shaft portion 16 of the bevel gear 15 is fitted into the gear mounting shaft 14 of the ball joint 8 from the rear side of the central shaft support portion 2. As a result, the ball joint 8 is held in the central shaft support 2 so as to be tiltable around the ball 111, and when the ball shaft member 11 is rotated, the bevel gear 15 is predetermined together with the gear mounting shaft 14 of the socket support member 13. It is rotatably supported in the angle range of.

Further, at this time, when the hemispherical convex portion 17a of the elastic arm 17 of the gear shaft portion 16 comes into contact with the support surface 2b of the gear support portion 2a and the bevel gear 15 meshes with the bevel gear pieces 25 and 26 of the damper device 20, it is elastic. It acts to apply urging force and eliminate the gap between the gears.

Next, as shown in FIG. 21, the semicircular dampers 21 and 22 of the damper device 20 are rotatably connected to each other by fitting the connecting shaft 24d and the connecting hole 23b, and the side wall of the rear portion inside the retainer 1. The end portions of the shaft portions 23 and 24 are fitted into the bearing holes 1a provided in the above, and are assembled in the ventilation passage 9.

At this time, the pair of semicircular dampers 21 and 22 are assembled so that the bevel gear pieces 25 and 26 mesh with the bevel gear 15 located at the rear portion of the central shaft support 2, and the elastic arm 17 of the bevel gear 15 is the gear support portion. The bevel gear 15 is urged toward the bevel gear pieces 25 and 26 so as to come into contact with the support surface 2b of 2a.

As a result, the bevel gear 15 is securely meshed with the bevel gear pieces 25 and 26, no gap is generated between the gears, and when the ball shaft member 11 of the ball joint 8 is rotated, the rotational power does not cause backlash. It is transmitted to the semicircular dampers 21 and 22 of the damper device 20, and the semicircular dampers 21 and 22 are in a state of opening and closing and rotating.

Next, as shown in FIG. 19, the operation knob 6 is fitted into the front portion of the knob shaft support 5 of the barrel 3 via the load applying member 19, and the locking claw 6a of the operation knob 6 is inserted into the knob shaft support 5. The barrel 3 is inserted into the front portion of the retainer 1 in a state of being inserted into the arc-shaped opening 5a of the above.

At this time, the engaging convex portion 3c of the barrel 3 is inserted into the engaging groove portion 1d on the retainer 1 side, and the locking claw 6a of the operation knob 6 is the locking hole 118 of the disk portion 114 of the ball shaft member 11 (FIG. It is inserted into 7) and locked inside.

As a result, the operation knob 6 is assembled to the knob shaft support 5 of the barrel 3, and when the operation knob 6 is grasped and tilted up, down, left and right, the barrel 3 can be tilted in the retainer 1 as shown in FIG. Become.

Further, in this state, when the operation knob 6 is turned clockwise or counterclockwise, the rotational power of the operation knob 6 is transferred to the semicircular damper of the damper device 20 via the ball joint 8, the bevel gear 15, and the bevel gear pieces 25 and 26. It is transmitted to 21 and 22, and the semicircular dampers 21 and 22 rotate so as to open and close the ventilation passage 9. Finally, the bezel 7 is fitted into the front portion of the retainer 1, and the locking claw and the locking portion provided on the peripheral portion thereof are fitted and locked to complete the assembly of the register.

The register having the above configuration is used by being attached to, for example, an air outlet of an air conditioner provided on an instrument panel of an automobile.

As shown in FIG. 23, when the damper device 20 is opened and the barrel 3 is in a straight state in front of the front of the register, that is, the center line S2 of the barrel 3 is the center line S1 along the axial direction of the ventilation path 9. When it is in a state parallel to the above, the air flow is guided by the fixed fins 4 of the barrel 3 and the like, and is blown straight forward.

When changing the blowing direction of the register, the operation knob 6 is held to tilt the barrel 3 up / down or left / right. For example, as shown in FIG. 25, when the operation knob 6 is tilted upward, the engaging convex portion 3c at the upper end of the barrel 3 moves upward in the engaging groove portion 1d, and the ball joint 8 moves the ball. The shaft member 11 tilts upward in the socket member 12 via the ball 111. As a result, the center line S2 of the barrel 3 is inclined upward with respect to the center line S1 of the retainer 1, is directed diagonally upward, and the blowing direction is changed diagonally upward. When the operation knob 6 is tilted downward, the barrel 3 is tilted in the same manner, and the blowing direction is changed diagonally downward.

Further, when the operation knob 6 is tilted to the right or left in that state, the barrel 3 is tilted to the right or left with respect to the axis connecting the engaging convex portion 3c and the ball 111 of the ball joint 8, and the blowing direction. Can be changed diagonally to the upper right or left.

On the other hand, when blocking the ventilation, the operation knob 6 is turned to the right or left to the rotating end. As a result, the rotational power of the barrel 3 is transmitted to the semicircular dampers 21 and 22 of the damper device 20 via the ball joint 8 of the rotation transmission mechanism 10, the bevel gear 15, and the bevel gear pieces 25 and 26. As a result, the semicircular dampers 21 and 22 rotate in opposite directions (opening direction when viewed from the front and rear) as shown in FIG. 26, and the peripheral edge portion of the semicircular dampers 21 and 22 hits the side wall in the retainer 1. It touches and closes the ventilation passage 9.

Since the rotation transmission of the rotation transmission mechanism 10 accompanying the operation of the operation knob 6 is performed via the ball joint 8, the damper device 20 is closed even when the barrel 3 is tilted in any direction. , The ventilation passage 9 can be completely closed and the ventilation can be stopped.

On the other hand, when restarting the ventilation, if the operation knob 6 is turned in the opposite direction to the above, the turning power is transmitted through the ball joint 8, the bevel gear 15, and the bevel gear pieces 25 and 26, and the semicircular damper 21 of the damper device 20. It is transmitted to 22, the semicircular dampers 21 and 22 rotate to the open side, the ventilation passage 9 is opened, and the ventilation is restarted.

By rotating the operation knob 6 around its axis in this way, the rotational power is transmitted to the damper device 20 via the ball joint 8 of the rotation transmission mechanism 10, the bevel gear 15, and the bevel gear pieces 25 and 26. The damper is transmitted to the semi-circular dampers 21 and 22 and operates so as to open and close. At this time, the elastic arm 17 provided on the gear shaft portion 16 of the bevel gear 15 elastically attaches to the support surface 2b of the gear support portion 2a. Since it slides in contact with each other, it is possible to eliminate rattling during the rotation operation, generate an appropriate operating load, and open and close the damper with a smooth operation feeling.

Further, since the bevel gear 15 is always urged to the bevel gear pieces 25 and 26 by the urging force of the elastic arm 17, the gap between the bevel gear 15 and the bevel gear pieces 25 and 26 is eliminated, which causes backlash and backlash. It is possible to prevent the generation of abnormal noise. Therefore, it is not necessary to apply grease to prevent the bevel gear 15 from generating abnormal noise, and the grease application process can be eliminated to reduce the manufacturing cost.

Furthermore, it is not necessary to externally fit a coil spring to the shaft of a ball joint or bevel gear as in the past, reducing the number of parts and eliminating the work of assembling a small coil spring, making it possible to manufacture registers at low cost. it can.

Further, when the barrel 3 is tilted up and down by holding the operation knob 6, the barrel 3 is tilted up and down around the ball 111 of the ball joint 8, and when the barrel 3 is tilted left and right, the barrel 3 is engaged at the upper part. The ball 111 of the ball joint 8 is tilted to the left and right about the line connecting the convex portion 3c and the ball 111. At this time, an appropriate operating load is applied to the ball 111 of the ball joint 8 by the socket member 12 which also serves as a load applying member, and the barrel is smoothly barreled without rattling. 3 can be tilted.

1 Retainer 1a Bearing hole 1b Radial frame 1c Circular frame 1d Engagement groove 2 Central shaft support 2a Gear support 2b Support surface 2c Engagement groove 3 Barrel 3a Cylindrical frame 3c Engagement convex part 4 Fixed fin 4a Circular fin 5 Knob Shaft support 5a Arc-shaped opening 5b Convex 6 Operation knob 6a Locking claw 7 Bezel 8 Ball joint 9 Ventilation path 10 Rotation transmission mechanism 11 Ball shaft member 12 Socket member 12a Ball hole 12b Half-split socket member 12c Half-split socket member 12d Locking pin 12e Locking hole 12f Engagement groove 13 Socket support member 13a Engagement claw 14 Gear mounting shaft 15 Bevel gear 16 Gear shaft part 17 Elastic arm 17a Hemispherical convex part 19 Load applying member 20 Damper device 21 Semi-circular damper 21a Small Concavo-convex part 21b Concavo-convex part 22 Semi-circular damper 23 Shaft part 23a Contact surface 23b Connecting hole 23c Point-shaped convex part 24 Shaft part 24a Contact surface 24b Connecting shaft 24c Concavo-convex part 24d Connecting shaft 25 Bevel gear piece 26 Bevel gear piece 29 Air outlet 111 Ball 112 Engagement pin 113 Circular recess 114 Disk part 115 Shaft part 116 Elastic holding part 117 Protrusion part 118 Locking hole 119 Fan-shaped concave part

Claims (7)

A barrel having a cylindrical frame and fixed fins is tiltably arranged in a retainer that is cylindrical and has a ventilation passage, a knob shaft support is provided in the center of the barrel, and an operation knob is provided in front of the knob shaft support. Is rotatably supported, a damper device is mounted in the ventilation path on the upstream side of the barrel, and the damper device opens and closes the ventilation path via a rotation transmission mechanism by rotating the operation knob. In the register
The rotation transmission mechanism of the operation knob is connected to the back surface of the operation knob, and a ball shaft member of a ball joint having a ball at the tip, a socket member fitted to the ball, and the socket member are connected to the retainer. A socket support member that is rotatably supported on the central shaft branch of the ball and has a synthetic resin bevel gear attached to the tip.
The ball shaft member, on the center line of the blowing direction parallel to the barrel within the barrel, rotatably supported by said knob shaft bearing of the barrel,
The damper device has a pair of semicircular dampers each having a shaft portion provided on a straight portion, and each shaft portion is provided with a bevel gear piece that meshes with the bevel gear, and the shaft portion of the straight portion of each semicircular damper is provided. It is configured to open and close the ventilation path by rotating around the center in opposite directions.
A gear mounting shaft is projected from the central shaft position of the socket support member, a gear support portion that penetrates and supports the gear mounting shaft is provided at the central shaft support portion, and an end portion of the gear support portion is provided. An annular support surface is provided,
It said bevel gear, to the gear attaching shaft projecting to the damper device side through the gear support portion is connected to fitting the gear shaft portion, a plurality of resilient arms on the outer peripheral portion of the gear shaft portion integrally A register that is molded and features the elastic arm in contact with the support surface of the gear support.
The register according to claim 1, wherein a hemispherical convex portion is provided at the tip of the elastic arm, and the hemispherical convex portion abuts on a support surface of the gear support portion. The register according to claim 2, wherein the shape of the elastic arm is formed so that the thickness in the vicinity of the tip portion is relatively thinner than the thickness of the base portion. The shaft portions of the pair of semi-circular dampers are arranged linearly along the axial direction of the shaft portion and are rotatably connected to each other, and are connected to one contact surface of the connecting portion of the shaft portions. The register according to claim 1, wherein a plurality of point-shaped convex portions are provided, and the point-shaped convex portions abut on the other contact surface. The register according to claim 1, wherein small uneven portions are continuously provided on the arcuate edge portions of the pair of semicircular dampers. The socket member is composed of a pair of half-split socket members divided into two, and a locking hole and a locking pin that are fitted and locked to each other are provided on the contact surface of the half-split socket member. The pair of half-split socket members are fitted together with the corresponding contact surfaces by fitting the locking hole and the locking pin in a state where the ball is inserted into the inner ball hole. The register according to claim 1. The pair of half-split socket members are molded as a load-applying member from a soft synthetic resin, and the half-split ball holes provided inside the half-split socket members cover a surface area wider than the hemispherical portion of the ball. The register according to claim 6, wherein the register is formed in.

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