JPH0222371Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a non-rotating pad type steering wheel having a planetary gear mechanism, and particularly to the structure of a bearing portion for pivotally supporting the planetary gear.

Prior Art In this type of steering wheel, the shaft of the planetary gear must be rotatably attached to the boss plate.

Therefore, in the past, as shown in FIGS. 1 and 2, the planetary shaft 53 that connects the planetary gears 51 and 52 on the column side and the pad side is installed in a mounting recess 55 formed in the edge of the boss plate 54 with a bearing member 56. It has been considered that a spring member 57 is provided to urge the coaxial bearing member 56 inwardly into the mounting recess 55. In this conventional example,
The planetary gears 51, 52 and the planetary shaft 53 can be assembled from the outside of the boss plate 54, and the planetary gears 51, 52 and the sun gears 58, 5 can be assembled from the outside of the boss plate 54.
9 can be suppressed by pressurization by the spring member 57, and rattling between the same gears can be prevented.

However, since the bearing member 56 and the spring member 57 are completely separate bodies, when assembling the planetary gears 51, 52 and the planetary shaft 53 as described above, the bearing member 56 and the spring member 57 may be damaged due to a mistake or the like.
may come off or fall separately.
It was necessary to pay considerable attention to their support. Therefore, its assembly and maintenance have become troublesome.

Purpose This invention was devised to solve the above-mentioned problems with conventional steering wheels, and its purpose is to prevent the bearing member and its biasing member from coming off separately due to a mistake during assembly, etc. To provide a new steering wheel which can be easily assembled and maintained because there is no fear of the steering wheel falling or falling, and the steering wheel can be easily supported.

Structure The steering wheel of this invention has a planetary shaft connecting planetary gears on the column side and the pad side movably fitted into a mounting recess formed at the edge of the boss plate via a bearing member.
The structure is such that a biasing member for pressing the planetary gear against the sun gear is slidably but not detachably attached to the bearing member.

Embodiment Hereinafter, an embodiment of a steering wheel embodying this invention will be described with reference to FIGS. 3 to 7. Reference numeral 1 indicates a column of an automobile. 2 is column 1
A steering shaft passes through the inside of the steering shaft, and a boss plate 3 is fastened to an end of the steering shaft with a nut 4. As shown in FIG. 4, this boss plate 3 has a substantially octagonal shape when viewed from the front, and cutouts are formed in both upper and lower edges of the boss plate 3 so that mounting recesses 5 open outward.

Reference numeral 6 denotes a ring portion for performing a steering operation, the center core 7 of which is supported by a plurality of spoke portions 8 extending from the boss plate 3, and the surface thereof is coated with a urethane resin layer 9.

Reference numeral 10 denotes a column-side sun gear made of synthetic resin or the like, which is fixed to the column 1 with a plurality of bolts 11, and whose center is connected to the steering shaft 2.
is pervasive. A pad side sun gear 12 is also made of synthetic resin or the like, has the same number of teeth as the column side sun gear 10, and is rotatably supported on the steering shaft 2 by a nut 4.

13 is various switches, indicators, etc. (not shown)
A pad portion that can be attached to the sun gear 12 on the pad side using a plurality of bolts 14.
installed on.

Reference numeral 15 designates a pair of planetary shafts rotatably mounted in both mounting recesses 5 of the boss plate 3 by the following bearing members. Reference numeral 16 denotes a bearing member fitted into a mounting recess 5 formed of a synthetic resin such as polyacetal, and a holding groove 17 for holding the planetary shaft 15 as a sliding bearing is cut out inside the bearing member. 18 is bearing member 1
The boss plate 3 is a flange integrally formed so as to protrude upward and downward from both sides of the boss plate 6, and the boss plate 3 is sandwiched between the upper and lower flange portions 18 so as to substantially abut on each other. Reference numeral 19 denotes a side surface portion appearing between the flanges 18 on both sides of the bearing member 16, and is fitted into the mounting recess 5 of the boss plate 3 so as to substantially abut on both inner side surfaces 20 thereof.

Reference numeral 21 indicates two guide grooves provided on the outer surface of the bearing member. Reference numeral 22 denotes a cover body that covers the outer surface of the bearing member, and is integrally formed with the bearing member 16 together with the hinge 23 at the edge thereof.
It is provided so that it can be opened and closed around 3. 24
2 is a locking hole provided on the outer surface of the bearing member 16;
Reference numeral 5 denotes a projection provided on the inner surface of the cover body 22, and when the locking hole 24 and the projection 25 are fitted, the cover body 22 is locked to the bearing member 16 in a closed state. It's becoming like that. Reference numeral 26 denotes two guide grooves provided on the inner surface of the cover body 22, which are opposed to the guide grooves 21 when the cover body 22 is closed, and a guide hole 27 is formed in each groove.

Reference numeral 28 denotes a biasing member made of a metal wire assembled to the bearing member 16, and has a U-shaped hooking portion 29 bent at one end. Reference numeral 30 denotes two wire portions extending from the hook portion 29, each of which is slidably fitted into the guide hole 27. 31 are two coil springs integrally formed in the middle of each wire portion 30. 32 is each wire part 3
This is a hook integrally formed on the tip of the 0.

The biasing member 28 has a hook 29 hooked to a notch 33 formed on the outer edge of the boss plate 3, and a hook 32 hooked to a protrusion 34 provided on both sides of the boss plate 3. As a result, the bearing member 16 is stretched in a mountain shape under tension, and urges the bearing member 16 and the planetary shaft 15 inwardly into the mounting recess 5 .

Numerals 35 and 36 are column-side and pad-side planetary gears that are provided at both ends of each planetary shaft 15 and have the same number of teeth, and mesh with the column-side and pad-side sun gears 10 and 12, respectively. . Each of the planetary gears 35 and 36 is connected to the biasing member 2.
8 through the planetary shaft 15, and revolves around the outer periphery of both sun gears 10, 12 while rotating as the boss plate 3 rotates due to steering operation. I'm starting to do that.

Further, both front and rear end surfaces 37 of the bearing member 16 substantially contact the inner end surfaces 38 of the planetary gears 35, 36 to regulate the positions of the planetary gears 35, 36. Prevents axial movement.

In the steering wheel configured as described above, the method of assembling the planetary gears 35, 36, etc. will be explained in particular. First, the planetary gears 35, 36 are attached to both ends of the planetary shaft 15. Further, the wire portion 30 of the biasing member 28 is fitted into the guide groove 21 of the bearing member 16, the cover body 22 is closed, and the biasing member 28 is assembled to the bearing member 16.

Next, the planetary gears 35, 36 and the planetary shaft 15 are fitted to the bearing member 16, and fitted into the mounting recess 5 of the boss plate 3, and the planetary gears 35, 36 are engaged with the sun gears 10, 12. match. Next, the hook 32 is hooked to the protrusion 34 and the hook portion 29 is hooked to the notch 33 while the coil spring 31 is extended.

As described above, in this embodiment, the biasing member 28 is assembled to the bearing member 16, so that they do not come off or fall separately due to a mistake during assembly, and can be easily supported. be able to. Therefore, assembly or maintenance can be performed easily.

Moreover, not only can the cover body 22 be easily formed integrally with the bearing member 16, but also the biasing member 2 can be easily formed integrally with the bearing member 16.
8 can be easily assembled.

Next, when the steering wheel of this embodiment is rotated, as described above, the planetary gears 35 and 36 rotate and revolve while being pressed by the sun gears 10 and 12, so that they are not fixed to the column side sun gear 10. The pad portion 13 does not rotate relative to the column 1. Furthermore, since the backlash between the gears is absorbed by being compressed, backlash due to backlash can be prevented.

Note that this invention is not limited to the configuration of the embodiment described above, and may be embodied as follows, for example.

(1) Changing the shape and structure of the bearing member 16. For example, the flange portions 18 may be formed only on one side, or the cover body 22 may be formed as a separate detachable body.

(2) Changing the shape and structure of the biasing member 28. For example, the wire parts 30 and the like on the pad side and the column side can be separated by separating at the hook part 29, or the position of the coil spring 31 can be changed.

(3) As shown in FIG. 8, the outer surface of the bearing member 16 is formed to be smooth or grooved, and a pipe 39 is loosely fitted into the wire portion 30 of the biasing member 28. Next, after heating the pipe 39 to a temperature equal to or higher than the softening temperature of the synthetic resin forming the bearing member 16, the pipe 39 is pressed against the outer surface of the bearing member 16 to soften the bearing member 16 while embedding it therein. . As described above, the biasing member 28 may be slidably assembled to the bearing member 16.

In addition, the biasing member 28 can be assembled to the bearing member 16 by any suitable method.

Effects As detailed above, this invention is a steering wheel in which the pads do not rotate using a planetary gear mechanism, and a planetary shaft that connects the planetary gears on the column side and the pad side is formed on the edge of the boss plate. A biasing member that is movably fitted into the mounting recess via a bearing member and that presses the planetary gear against the sun gear is attached to the bearing member in a slidable and non-removable manner. This eliminates the risk of the bearing member and its biasing member coming off or falling off due to a mistake during assembly, etc., and it is easy to support them, making assembly and maintenance easier. It has a great effect.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a conventional steering wheel, Fig. 2 is an exploded front view of the main parts,
Fig. 3 is a partially cutaway side view showing an embodiment embodying this invention, Fig. 4 is a perspective view of the main parts of the bearing member seen from the front, and Fig. 5 is a state in which the cover body of the bearing member is opened. FIG. 6 is a perspective view of the main part showing the state in which the biasing member is assembled to the bearing member. FIG. 7 is a perspective view of the main part showing the state in which the bearing member is attached to the boss plate. FIG. 8 is a perspective view of a main part showing another method of assembling the biasing member to the bearing member. Boss plate 3, mounting recess 5, column side sun gear 10, pad side sun gear 12, planetary shaft 1
5, bearing member 16, biasing member 28, column side sun planet 35, pad side planetary gear 36.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a steering wheel with non-rotating pads using a planetary gear mechanism, the planetary shaft 15 connecting the planetary gears 35, 36 on the column side and the pad side is attached to the edge of the boss plate 3. The planetary gears 35, 3 are movably fitted into the formed mounting recess 5 via the bearing member 16.
6 against the sun gears 10, 12. A steering wheel characterized in that a biasing member 28 for pressing the sun gears 10 and 12 is slidably but not detachably attached to the bearing member 16. 2. The steering wheel according to claim 1, wherein a guide groove 21 is formed on the outer surface of the bearing member 16, and a cover body 22 is provided to cover the outer surface of the bearing member 16. 3 Connect the bearing member 16 and the cover body 22 to the hinge 23
The cover body 22 is integrally formed through the hinge 2.
3. The steering wheel according to claim 2, wherein the steering wheel is configured to be opened and closed centering on the steering wheel. 4. Request for registration of a utility model characterized in that the biasing member 28 consists of a wire portion 30 that fits into the bearing member 16, a spring portion 31 that connects to the wire portion 30, and locking portions 29 and 32 at both ends. range 1
Item 2 is the steering wheel described in Item 3.