JPS6114089Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a light bulb holding device for an outboard motor or the like.

More specifically, the holder for holding the light bulb is formed by a double inner and outer cylinder made of rubber or the like, the light bulb is inserted and supported in the inner cylinder part, and a ring recess is formed on the outer periphery of the outer cylinder part. The groove is engaged with the opening of the fuselage, and the groove is fitted into this part, and the engagement skirt part of the cover, which has a cap-shaped transparent part at the tip, is force-fitted and press-fitted into the gap between the inner and outer cylinder parts, The base end of the skirt engages with the inner periphery of the outer cylinder, and the outer periphery of the inner cylinder presses the skirt in the radial direction, holding the light bulb elastically and away from the fuselage opening. This invention relates to a light bulb holding device that prevents the harmful effects of vibration on light bulbs, improves the durability and lifespan of light bulbs, and also improves waterproofness.

FIG. 5 shows a plan view of the outboard motor 1 with the cover removed. In the figure, the right side is the hull side, and the hull side is provided with a handle 2, a handle 3, a shift lever 4, etc.
The internal combustion engine 6 and its accessories are housed in the oil case 5 to which this is attached. An indicator lamp 7 for displaying the operating status of the engine, etc. is placed on the hull side wall surface of the oil case 5 with the lamp portion exposed on the hull side outer surface.

Indicator lamp 7 provided on the outboard motor 1 as described above
Because it is used in a water environment, there are many opportunities for it to be submerged in water from waves, etc., and there are also many opportunities for it to be washed away by rainwater. For this reason, there is a high demand for waterproofing of the light bulbs and electrical connection equipment installed inside. In addition, the indicator lamp 7 is attached to the oil case 5, and since the oil case 5 is equipped with an internal combustion engine, the vibrations caused by the operation of the engine can damage the vehicle body or cushioning materials, such as the indicator lamps and other lamps of the vehicle. It acts directly on the indicator lamp 7 without any intervention. As a result, the built-in light bulb is directly affected by the vibrations, often causing accidents such as filament breakage, and the life and durability of the light bulb are extremely short.

Further, the indicator lamp 7 is often composed of a colored translucent cover and a holder for holding a light bulb, and the connection between the two is generally a screw type. For this reason, the work of connecting the two is troublesome and complicated, and when the cover is used under the above-mentioned vibration conditions, the cover may loosen and come off naturally, causing the cover to be lost.Furthermore, the loosening of the cover may cause water to leak out in the event of flooding, etc. There is also a risk that the electric bulb may get in and damage the electrical function, or that if the cover comes off, the internal light bulb may fly out due to the vibration and be damaged.

The inventor of the present invention created the present invention in order to effectively solve these problems in view of the above-mentioned problems in mounting and holding light bulbs that constitute indicator lamps used in water environments such as those found in outboard motors, which have a lot of vibration. This is what I did.

The purpose of this invention is to attenuate vibrations as much as possible even when used under conditions with a lot of vibration, such as the indicator lamps of outboard motors, and to securely hold the light bulb as a vibration-proof structure. To provide a light bulb holding device which prevents as much as possible the adverse effects of vibration and has improved durability and service life.

In addition, the object of the present invention is to provide a light bulb holding device that is extremely waterproof, exhibits extremely high waterproofness even when used in a water environment such as an outboard motor, and has an excellent waterproof effect. Furthermore, the present invention provides a light bulb holding device in which a holder and a cover are connected by press-fitting without screw connection, and the installation is easy and the connection is reliable.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Figure 1 is a side sectional view showing how it is attached to the fuselage, Figure 2 is a front view of the holder, and Figure 3 is Figure 2 3-3.
The line sectional view, FIG. 4, shows a side sectional view of the cover.

Reference numeral 10 denotes a holder, and the holder 10 is made of a flexible elastic material such as rubber. The holder 10 includes an inner cylinder part 11 and an outer cylinder part 18. The inner cylindrical part 11 includes a cylindrical space part 13 whose tip is opened as an insertion port 12, and a thick bottom part 14 that closes the base end of the space part 13. A boss portion 15 is provided on a part of the outer periphery of the bottom portion 14, one end is opened at the end surface of the boss portion 15, and the other end is opened in the cylindrical space portion 1 of the bottom portion 14.
An L-shaped cord insertion passage 16 that opens at the inner bottom of the bottom part 14 is provided in the bottom part 14.

Further, protrusions 17 are provided radially on the outer periphery of the tip of the inner cylinder 11, and these protrusions 17 are arranged at a predetermined number of equiangular intervals on the outer periphery of the tip of the inner cylinder as shown in FIG. This protrusion 17 is provided in the inner cylinder part 1.
1 and other parts are integrally molded.

An outer cylindrical portion 18 having a larger diameter is provided concentrically on the outer periphery of the inner cylindrical portion 11, and the tip of the outer cylindrical portion 18 is flush with the tip of the inner cylindrical portion 11. A cylindrical space portion 20 including a tip opening 19 of the outer cylinder portion 18 is provided so as to span the protrusions 17 in the axial direction. A ring-shaped gap S is formed between the inner wall of the cylindrical space 20 of the outer cylinder part 18 and the outer wall of the inner cylinder part 11, and this gap S becomes a gap S ₁ at the protrusion 17 due to its protrusion. It is narrowly structured as... An engagement groove 21 is formed in the outer peripheral part of the outer cylinder part 18 in a direction perpendicular to the axial direction, and is formed in a ring shape around the entire circumference. A flange portion 22 having a larger diameter than other portions of the outer cylinder portion 18 is formed on the outer periphery of the tip portion.

After the cylindrical space 20, the outer cylinder part 18 is narrowed toward the outer periphery of the base of the inner cylinder part 11, continues as a truncated conical base 23, and continues with the outer periphery of the base of the inner cylinder part 11. A space is formed between the base 23 and the inner cylindrical portion 11 so that its tip is continuous with the cylindrical space 20 and has a substantially triangular cross section with the apex at the rear in the axial direction. space 2
At the boundary of the inner wall of the base part 0, an engaging surface 24 is formed over the entire inner periphery, and the end surface is inclined radially outward.

Reference numeral 30 denotes a light bulb cover, the tip of which is provided with a transparent cap body 31 that is colored or the like, and the ring-shaped base end 32 of the cap body 31 has a stepped portion 34 formed at the tip of a cylindrical skirt portion 33. are fitted and integrated by adhesive etc. The outer diameter of the skirt portion 33 is the same as that of the holder 1 above.
0, and the inner diameter is smaller than the diameter of the locus connecting the protrusions 17 of the inner cylinder part 11, that is, the width of the gap _S1 is smaller than the width of the skirt part 33. Set the wall thickness to a large value. A flange portion 35 is formed on the outer periphery of the distal end of the skirt portion 33, that is, the outer periphery on the cap body 31 side, and a flange portion 35 is formed on the outer periphery of the base end, that is, the outer periphery of the engagement surface 24.
An engaging protrusion 36 projecting radially outward in a chevron shape is formed on the side outer periphery over the entire circumference.

Next, how the light bulb is held by the holder 10 and cover 30 will be explained.

FIG. 1 shows the installation and holding state of the light bulb, in which a conductive base 50 which also serves as one pole of the light bulb 40 is fitted into the cylindrical space 13 of the inner cylinder 11 of the holder 10, and the base base of the light bulb 40 is inserted. 41 is inserted into the base 50, and the protrusions provided on the outer periphery are engaged with the grooves formed on the inner wall thereof. A push plate 52 which is pressed by a spring 51 is provided at the bottom of the bulb base 41, and a contact 53, which is the other pole, is provided at the center of the push plate 52, and a lead wire of a cord 54 introduced into the space through the insertion passage 16 is provided. is connected to the cap 50 and the contact 53, and the bulb is connected to a power source through the cap 41 and the contact 42 at the bottom. In this fitted state of the light bulb 40, the inner periphery of the insertion opening 12 in the space 13 surrounds and comes into close contact with the outer periphery of the base of the light bulb body made of glass or the like.

The holder 10 with the light bulb 40 assembled as described above is inserted into the opening 61 provided in the fuselage body 60 such as the oil case of an outboard motor from the outside with the bottom 14 at the head. The outer diameter of the groove portion 21 is set to be approximately equal to the outer diameter of the groove portion 21 . Therefore, although the rear part of the groove part 21 has a larger diameter than the inner diameter of the opening part 61, the outer cylinder part 1
Since 8 is a cylindrical body made of rubber or the like, it can be elastically bent and reduced in diameter, and insertion can be easily performed. Then, the inner diameter portion of the opening 61 and the groove portion 21 are engaged with each other by insertion, and the flange portion 22 of the outer cylinder portion 18 comes into contact with the periphery of the outer surface of the opening portion 61 .

Next, the cover 10 is firmly inserted into the gap S of the holder 10 with the base of the skirt portion 33. An engaging projection 36 is provided at the base of the skirt portion 33, and this is inserted between the projections 17 of the gap S and the inner circumference of the outer cylinder member 18, but the skirt portion 33 is thicker than the width between them, and Although the protrusion 36 is thicker, due to its small size and the fact that the inner and outer cylinder members are made of rubber, etc., the protrusion 36 bends elastically and is forcibly inserted into the protrusion 3.
6 crosses the gap S, and at the crossing position, the protrusion 36 reaches the slope 24 of the space communicating with the gap S, and the protrusion 3
The surface 36a of No. 6 engages with the inclined surface 24 and performs a wedge action. At the same time, the rear surface of the flange portion 35 of the skirt portion 33 is in close contact with the front surface of the flange portion 22 of the holder 10. Even if the cover 31 is installed roughly, such as by inserting the cover somewhat diagonally, the light bulb 40
Since the outer circumference of the base of the cover 31 is held by the circumference of the open end of the inner cylindrical part 11, there is no possibility that the skirt part 33 of the cover 31 or the end of this comes into contact with the light bulb, which could damage the light bulb if it comes into contact with it when the cover is attached. Prevent situations like this from occurring.

As a result of the above, the light bulb 40 is held as shown in FIG.

In the above, the skirt portion 33 of the cover 30 is reliably held by the inner wall of the outer cylinder portion 18 and the elastic action of the protrusion 17, and the protrusion 33 of the skirt portion 33
The wedge effect prevents it from coming off. Also skirt part 33
Flange portion 2 of holder 10 of flange portion 35 of
2, the inner wall of the outer cylinder part 18 and the skirt part 33
The close contact of the outer periphery acts like a rubber seal, providing high waterproofness. Furthermore, since the holder outer cylinder portion 18 in contact with the opening 61 is made of rubber with a high vibration-proofing effect, vibrations of the body 60 are first absorbed and attenuated in this portion. The vibrations propagated to the inner cylinder part 11 via the skirt part 33 of the cover 30 are attenuated by interference with the skirt part 33 by synthetic resin, etc., and are propagated to the inner cylinder part 11 via the protrusion 17. . Since this portion, including the protrusion 17, is also molded from rubber, it is effectively absorbed and attenuated, and the vibrations imparted to the light bulb 40 are made as small as possible. In addition, since the above-mentioned gap S is provided between the inner diameter of the opening 61 of the body 60 and the light bulb 40, the distance between the vibrating part and the light bulb 40 becomes large, and this together with the above-mentioned damping effect This reduces vibrations to the bulb. In addition, the inner cylindrical portion 11 that holds the light bulb contacts the skirt portion of the cover 30 that propagates vibrations only at the plurality of protrusions 17, and does not touch the other portions, thereby also preventing resonance of the light bulb.

Furthermore, as described above, since the inner periphery of the opening of the inner tube 11 is in contact with the outer periphery of the bulb base, in addition to the above, propagation of vibrations to glass or the like is suppressed, thereby preventing damage to bulbs made of glass or the like.

According to the present invention as described above, even when the aircraft is used under conditions with a lot of vibration, such as the display lamps of outboard motors, the vibrations of the aircraft are doubly absorbed and attenuated by the vibration isolating member, and during this time This space prevents the built-in bulb from resonating, and it is also possible to set a large distance between the vibrating body and the bulb, and the synergistic effect of the above effectively reduces vibrations to the bulb, resulting in an excellent anti-vibration effect. The present invention provides a light bulb holding device that prevents the light bulb from breaking due to vibration as much as possible, and improves the life and durability of the light bulb.

Further, because of the above structure, the holder and the cover are reliably connected due to the wedge effect and the action of the protrusions, and the effect of the protrusions provides excellent watertightness, making it possible to obtain a highly waterproof light bulb holding device.

Furthermore, during installation, it is only necessary to firmly fit the cover skirt part into the holder, which contributes to simplifying the installation work, and also allows removal of the cover and holder while maintaining high sealing performance and reliable retention as described above. In addition to being easy to carry out, it also exhibits various features such as not requiring any special anti-vibration means since the holding device has a vibration-isolating function, making it highly practical.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a side sectional view of the installed state, Fig. 2 is a plan view of the holder, Fig. 3 is a sectional view taken along the line 3-3 in Fig. 2, and Fig. 4 is a sectional view of the holder. 5 is a side sectional view of the cover, and FIG. 5 is a plan view of the outboard motor with the engine cover removed. In the drawing, 10 is a holder, 11 is an inner cylinder part, and 16 is a holder.
is a cord lead-out portion, 17 is a protrusion, 18 is an outer cylinder portion,
22 is a groove portion, S is a gap, 30 is a cover, 31 is a transparent portion, 33 is a skirt portion, 40 is a light bulb, 50 is a base, and 54 is a cord.

Claims (1)

[Claims for Utility Model Registration] A cylindrical outer cylinder part with a ring-shaped groove on the outer periphery of the tip that engages with the opening of the fuselage body, and this part is continuous at the rear base and is connected to the inner wall of this part. It is formed concentrically and integrally with this part with a gap in between, a base into which the light bulb fitting is inserted and held is housed in the cylindrical part, a plurality of protrusions are provided radially around the outer periphery of the tip part, and a rear end part A holder is formed by integrally forming a bottomed cylindrical inner cylinder body that is closed except for the cord lead-out hole with a flexible elastic member such as rubber, and a flange is formed on the outer periphery of the distal end, and a flange is formed on the outer periphery of the proximal end. A skirt portion formed with an engaging protrusion that fits into the gap between the outer cylinder portion and the inner cylinder body, and a translucent cap body that is integrally connected to the skirt portion. A light bulb holding device comprising: a cover that firmly press-fits a skirt portion including the engaging protrusion into a gap between an outer cylinder portion and an inner cylinder body.