JPS6334285A - Steering device - Google Patents

Abstract

PURPOSE:To facilitate the molding of a planetary gear by molding both small module gear part and large module gear part of said planetary gear in an integrated form with a soft synthetic resin. CONSTITUTION:A planetary gear 38 has a small module gear part 39 and a large module gear part 40 in its upper and lower parts which are meshed with the internal gears 23, 28 of an upside cylindrical member 20 and a downside cylindrical member 25 respectively. The small module gear part 39 is meshed with small module tooth parts 23a, 28a, while the large module gear part 40 is placed leaving a space from large module tooth parts 23b, 28b. And, both gear parts 39, 40 are molded in an integrated form with a soft synthetic resin, thereby, preventing the occurrence of unusual sound caused by the meshing of gears.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a seven-ring steering system for automobiles, etc., and in particular, the present invention relates to a seven-ring steering wheel mounting system for automobiles. It's about what you hold.

(Prior Art) Recently, steering wheels have been used in which the operating parts of various control mechanisms are arranged on the pad part in the center of the steering wheel, but in this case, when the steering wheel is rotated, the pad part is It is necessary to keep it in one rotation state and cover it.

Conventionally, as a method for setting the J sea urchin pad portion in a non-rotating state, for example, the method disclosed in Japanese Patent Application Laid-Open No. 60-203549 has been proposed.

This conventional device has a boss fixed to the steering shaft at the center of the steering wheel, and an upper cylindrical member with an internal gear on the inside of the outer periphery and a pad on the top is rotatably fitted around the outer periphery of the boss. An upper cylindrical member having an internal gear on the inner side of its outer periphery is rotatably arranged at a lower position of the first side member, and the steering shaft is inserted through the upper cylindrical member. ] It is stuck to the ujl etc.

Also, the TI machining v1' that meshes with the internal teeth of the upper cylindrical member and the upper cylindrical member! The shaft is rotatably mounted on a shaft fixed to the boss.

- When you turn the steering wheel, Tl
The gear rotates on its own axis through engagement with the internal teeth of the upper cylindrical member that is statically rotated, and the gear rotates around its own axis through engagement with the internal teeth of the upper cylindrical member on the south center of the planet. The upper cylindrical member is held stationary.

In addition, the planetary south center has a part that meshes with the internal teeth of the child side cylindrical part (O and the upper cylindrical member), and a soft gear part made of a soft synthetic resin or rubber material that is always in contact with the internal teeth. Then, the hard gear parts made of hard synthetic resin J or metal are arranged side by side with the gap to the right. In addition, if the handle is suddenly operated or an external force is applied to the above-mentioned pad in the direction of the rotating knob, the soft gear part will deform and the hard gear part will mesh with the internal gear. By doing so, it is possible to prevent the southward jump and to maintain the non-rotating state.
It is designed to last for t.

(Problems to be Solved by the Invention) However, when manufacturing the planetary center part of the 11-tooth center gear as described above, for example, the hard gear part is integrally molded with the rotating shaft, and this The soft gear part is integrally molded with (T) extrusion molding, but the hard gear part is
νC Because the soft gear part is integrally molded separately from the hard gear part, molding is difficult and the structure is not suitable for close use.

In addition, when the handle is turned suddenly or an external force is applied to the pad in the rotational direction, the hard gear directly comes into contact with the internal teeth, creating an abnormal noise due to the meshing of the gears.

The present invention was developed in view of the above-mentioned problems, and it is designed to make the structure of the planetary center easier to mold, making it suitable for premature birth, and to prevent sudden handle operations and external forces in the rotational direction of the pad. The object of this invention is to provide a steering device that can prevent abnormal noises caused by gear meshing even when used for fishing.

(Structure of the Invention) (Means for Solving the Problems) The steering device of the present invention includes a rim portion 4, spoke portions 7,
and a steering wheel body 1 fixed to the steering shaft 14 by the boss 8 on the right side,
An upper cylindrical member 20 that is rotatably fitted around the outer periphery of the boss 8, has an internal gear 23 on the inner side of the outer periphery, and has a pad 54 on the upper part, and is substantially rotatable above the upper cylindrical member 20. The upper cylindrical member 20, such as the upper cylindrical member 25, which is fixed in a fixed state and has an internal gear 28 inside its outer periphery.
and 1, 1 gears 38 which are engaged with the inner teeth 23 and 28 of the upper cylindrical member 25 and rotate together with the boss 8, and the upper cylindrical member 20 and the upper cylindrical member 21) Medium 23.28 joule small module tooth part 2
3a, 28a, etc., the large canine module tooth portion 23b of the module.

28b, and the planetary center 38 has a small module of internal teeth 23.28 at -, the portion that meshes with the internal teeth 23.28 of the upper cylindrical member 20 and the upper cylindrical member 25. A small module gear part 39 with a small modulus that always meshes with the tooth parts 23a and 28a and a large module gear part 40 with a large module that covers and leaves a gap with the tooth parts 23b and 28b are made of soft synthetic resin or It is integrally formed from rubber material.

(For JL) The steering device of the present invention has an M4 structure in which the small module gear part 39 and the large module gear part 40 of the M star gear gear 38 are integrally formed from soft synthetic resin or rubber material. Easy to mold ¥38, J
Even when the steering wheel is suddenly manipulated or an external force is applied to the pad 54 in the rotational direction, the module remains strong.
Joule tooth portion 23b.

28b.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 5, 1 is a steering wheel body, and this steering wheel body 1 includes an annular rim portion 4 that covers the outside of a rim core metal 2 with a covering material 3, and is welded to the rim core metal 2. The outer side of the connected plate-shaped spoke core metal 5 is covered with a shield 6, and a boss 8 which has been welded to the center part of the plate-shaped spoke part 7 and the spoke core metal 5 is attached to the right. . This boss 8 has an annular flange portion 9 in the middle portion.
are integrally provided, and a cylindrical portion 10.14 is provided at the upper part of this flange portion 9, and this both-turn cylindrical portion 1
Ring on the outer edge of 0.11! 1 where ThM2.13 is formed, and 1°20 where the center part of the boss 8 is fitted onto the flat end of the steering shaft 14 and secured with a knot 15 are integrally made of hard synthetic resin. The formed cylindrical "-" side cylindrical member 20 has an inner fitting cylindrical section 21 and an outer annular section 22, and has an inner side of this annular section 22. In addition, the small module teeth 23a of the first wheel and the middle part of the small module teeth 23a are drilled.
23b of small diameter module
An internal gear 23 is formed. So,
Assuming that the inner fitting cylindrical portion 21 is rotatably fitted to the outer periphery of the cylindrical portion 10 of the post 80) δ;, the ring i? A λ nozzle ring 24 is fitted to I′ 112 to prevent a person from coming into contact with the upper surface of the joint tube portion 21.

Reference numeral 25 denotes a cylindrical upper cylindrical member integrally formed with a hard synthetic resin.
J3 and an annular portion 27 on the outer periphery, and this annular portion 21
On the inside of the module, there is a small pebble wheel: 1-le tooth part 28.
ayo 3J-Biko no Ko-shi Joule 1'! At the lower part of the first part 28a, there is a large modulus with a slightly smaller diameter and a large t-joule tooth part 2.
An internal gear 28 consisting of 8b is formed. Then, the inner fitting cylindrical part 26 is rotatably fitted to the outer periphery of the cylindrical part 11 of the boss 8, and the ring 13 of the boss 8 comes into contact with the upper surface of the fitting cylindrical part 2G. A snap ring 29 for handling is fitted. Further, a fixing mechanism 31 is provided on the upper cylindrical member 25 to substantially fix it to the suar ring ram 30 side through which the steering sheath 14 is inserted. This fixing mechanism 31
, a plurality of protrusions 32 for rotating well barriers are integrally provided on the lower surface of the upper cylindrical member 25, and each protrusion 32 corresponds to a switch case 33 fixed to the steering column 30. J-shaped engagement holes 34 are formed, and each protrusion 32 is engaged in each engagement hole 34 to connect the upper cylindrical member 25.
to stop rotation.

1-A substantially U-shaped support frame 351) is fixed near the center of the Suboke core metal 5 with a bend 37 via a mounting 3G, and the Yuko south wheel 38 is rotatably mounted on this support frame 35. Iroro. This recreational rhinoceros south width 381.1.1-ki 1-111
11 parts 20 and internal gear 23 of upper cylindrical member 25
．． In the upper part of G that engages with 28, 23 in the inner part of A
．． 28 small module teeth 23a, 28a are always 1
Small module tooth part 39 with small L joule that also fits together
There is a gap between the eastern part of the human module 23b and 28b, and a diameter slightly smaller than that of the small module tooth part 39, and the soil part 1-
The tooth center part 40 has a large diameter and a high split bamboo.
1. U'cL J which is integrally formed from soft synthetic resin or rubber material such as polyester or rubber material.
5. The middle portions 39 and 40 of both teeth are formed in an involute chevron shape.

Therefore, in manufacturing this idler gear 38, a support 1 whose both ends protrude from the end face of T15'i7 teeth 38 is used.
1.) Both tooth middle parts 39 and 40 are integrally molded by index molding.

Then, both ends of the upper half of the support shaft 41 are fitted into the support 1) frame 35 and rotatably fitted into the I-shaped bearing 42.
Against 3, Tonko Yamanaka 38 spins White I 1 and supports J? + and -
(There is.

[An electric knit 50 is attached to the 1N-shaped member 201- on the first side with a screw 52 via a handle 51, and a plurality of operation buttons 53 are arranged in parallel on the upper surface of the electric knit 50. A pad 54 is fitted over the electric connector 50 and with each operation button 53 protruding.

Then, when you rotate the steering wheel body 1,
The Tlfl gear 38 rotates and revolves through engagement with the internal gear 28 of the stationary upper cylindrical member 25, and also engages the M star south middle 38 and the inner tI4 middle 23 of the ↓ side member 20. The electrical unit 50 and pad 54 are held static together with the upper cylindrical member 20 via the upper cylindrical member 20 .

At this time, the small module gear part 39 of the star tooth width 38 contacts and meshes with the small module teeth parts 23a and 28a of the internal gear 23.28, and the normal operation is as shown in Fig. 5. As shown in the figure, only the small module gear portion 39 is kept in a non-rotating state. Therefore, no abnormal noise is generated due to gear meshing.

Furthermore, even if the small module gear portion 39 is significantly deformed when the handle is suddenly operated or an external force is applied to the pad 54 in the rotational direction, the large module tooth width portion 40, which has a large module and high tooth rigidity, is Since it meshes with the large module ridges 23b and 28b of the gears 23 and 28, tooth skipping is prevented and the one-rotation state can be reliably achieved.Moreover, the module gear part 40 is integral with the small module gear part 39. Since it is made of soft synthetic resin or rubber material, it will not occur due to gear meshing.

In addition, in the above-mentioned embodiment, there is an impurity 1 on the eastern part of the mandrel tooth 40 of the middle 38 free teeth. − l~Internal gear 2 for Yamayama-shaped output
3.28 The human module tooth portions 23b and 28b come to mesh with each other. Part 23
It is also possible to use an arcuate tooth profile for 28b and 28b. In this case, the rigidity of the wheel gear part 40 is further increased, and tooth skipping can be reliably prevented. Can be done.

[Effects of the Invention] According to the present invention, the planetary gear has the small module gear portion and the large module tooth portion integrally formed from soft synthetic resin or rubber material. It is effective for producing one product because it can be molded into
In addition, even when the handle is suddenly operated or an external force is applied to the pad in the rotational direction, the large module gear part, which has a large module and high rigidity, meshes with the large module tooth part of the internal gear, thereby preventing 11 skipping. At the same time, it is possible to prevent the occurrence of abnormal noise due to gear meshing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a main part showing an embodiment of the steering device of the present invention, Fig. 2 is a vertical sectional view of its rest, Fig. 3 is an enlarged longitudinal sectional view of a part thereof, and Fig. 4 is a Longitudinal cross-sectional view of its main parts,
FIG. 5 is an enlarged cross-sectional view of the main part thereof, and FIG. 6 is an enlarged cross-sectional view of the main part showing another embodiment of the present invention. 1. Steering wheel body, 4. Rim part, 7.
- Spoke portion, 8... Boss, 14... Steering shaft, 20... Upper cylindrical member, 23... Internal gear, 23a
・・Homodule tooth portion, 23b ・・Large module tooth portion, 25・・Upper cylindrical member, 28・・Internal gear, 28a・
・Small module mountain part, 28b...Large = 13- King gear 2-gear tooth part, 38...''M3? gear, 39...Small module gear part, 40...Large module gear part, 54
··pad.

Claims (1)

[Claims] (1) A steering wheel body that has a rim part, spoke parts, and a boss and is fixed to the steering shaft by the boss, and a steering wheel body that is rotatably fitted on the outer periphery of the boss and has an internal gear on the inside of the outer periphery and a pad on the upper part. a lower cylindrical member fixed in a substantially non-rotating state below the upper cylindrical member and having an internal gear on the inside of its outer periphery; a planetary gear meshed with an internal gear and co-rotating with the boss, the upper cylindrical member and the lower cylindrical member each having a small module tooth portion of the module and a large large module tooth portion of the module. The planetary gear is formed by forming a portion of the upper cylindrical member and the lower cylindrical member that meshes with the internal gear with a small small module gear portion of the module that always meshes with the small module tooth portion of the internal gear. A steering device characterized in that a large module gear portion of a module having a gap with respect to the large module tooth portion is integrally formed from a soft synthetic resin or a rubber material.