JPS626484Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for detecting the angle of inclination of a vehicle such as a motorcycle, and in particular, a device for detecting the angle of inclination of a vehicle having a structure that simultaneously prevents leakage of damper oil, vibration of electrical parts, water exposure, etc. Regarding.

Conventionally, as a device for detecting the inclination angle of a vehicle such as a motorcycle, a weight that tilts relative to the casing according to the inclination angle of the vehicle is used as the inclination angle sensing means. When the angle exceeds the angle, the permanent magnet embedded in the weight activates the reed switch used as part of the detection means and sends a signal indicating that the vehicle's angle of inclination has exceeded a predetermined value. A device designed to do this is used. In such devices, the casing that houses the weight is usually filled with damper oil, and the angle of inclination of the vehicle does not exceed a predetermined value due to vibrations of the vehicle during normal driving or external forces acting on the vehicle during cornering. However, the system prevents the weight from tilting beyond a predetermined value and transmitting an erroneous signal indicating that the angle of inclination of the vehicle has exceeded the predetermined value.

Of course, if the damper oil filled in such a device leaks, it will not be possible to prevent the transmission of the erroneous signal.

The present invention includes a casing, an inclination angle sensing means rotatably mounted in the casing, and a detection means that outputs a detection signal when the inclination angle sensed by the inclination angle sensing means exceeds a predetermined value. A vehicle inclination angle detection device comprising oil filled between the casing and inclination angle sensing means, wherein the casing has an upper opening at the top and a substantially semi-cylindrical casing bottom at the bottom. The inclination angle sensing means is housed in the bottom of the casing, and a step is provided on the inner circumferential wall of the upper end opening at a position above the inclination angle sensing means to cover the inclination angle sensing means. At the same time, a lid having an oil inlet that can seal the filled oil is fixed to the stepped portion, and a space above the lid forming a casing is filled with resin. It is characterized by being fixed by hardening and reliably preventing oil leakage of damper oil, and also has a dual effect of preventing vibration and waterproofing of electrical parts and leakage of damper oil inside the casing. The present invention provides a vehicle inclination angle detection device that can improve reliability and improve productivity by simplifying management during manufacturing.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an example in which a conventional inclination angle detection device is applied to a motorcycle. Reference numeral 1 indicates an engine, and an intake passage 2 is connected to the engine 1. A fuel injection nozzle 3 is attached to the intake passage 2 near an engine intake port (not shown), and is connected to a fuel pump 5 via a fuel supply pipe 4. A battery case 8 is installed in a side cover 7 attached under the seat indicated by reference numeral 6, and the inclination angle detecting device 9 of the present invention is attached to the side wall of this battery case. This inclination angle detection device 9 is electrically connected to an electronic fuel control device 10.
The fuel pump 5 is electrically connected to the output side of the electronic fuel control device 10.

The inclination angle detection device 9 is attached to the side wall of the battery case so that the central axis of its weight (described in detail later) is at the center position in the width direction of the vehicle and is horizontal.
When the angle of inclination of the vehicle exceeds a predetermined value, the inclination angle detection device 9 supplies a signal to the electronic fuel control device 10 indicating that the angle of inclination exceeds the predetermined value. When the signal is input, the electronic fuel control device 10 stops the power supply to the fuel pump 5 and stops the fuel supply from the fuel pump 5 to the fuel injection nozzle 3, thereby stopping the fuel supply to the engine 1. Stop supply.

FIG. 2 shows the internal structure of the inclination angle detection device shown in FIG. The casing body 11 consists of an upper part with a rectangular vertical cross section and a lower part with a substantially semi-cylindrical vertical cross section,
Moreover, it consists of a generally semi-cylindrical member with one end open and the other end closed. Inside the casing body 11, there is a partition wall 11a that is integrally installed between both side walls and cooperates with the lower circumferential wall to define a space 13 with a circular cross section. A vertical wall 11b that hangs down to the vicinity is formed. A semi-cylindrical weight 12 is housed in the space 13 so as to be rotatable about a central shaft 12a extending through a semi-circular central shaft hole 12c. Permanent magnets 12b, 12b are embedded in this weight so as to penetrate the both side edges thereof in the axial direction. The open end of the casing body 11 has a separate side lid 1 of a corresponding shape welded to the casing body end face 11c.
4. Further, a reed switch 15 is mounted in the axial direction on the upper surface of the central portion of the partition wall 11a. This conventional inclination angle detection device stores a weight 12 in the space 13, then welds a side cover 14 to the side end surface 11c of the casing body 11, and then seals off the damper oil and the like described above. However, as the welded parts are distributed in the height direction as shown by diagonal lines in Figure 2, there is a risk of oil leaking from the welded parts, and strict manufacturing controls are required to prevent such oil leakage. It was necessary.

Next, an embodiment of the inclination angle detection device according to the present invention will be described in detail with reference to FIGS. 3 to 5.

3 is a front view of the inclination angle detection device 9, FIG. 4 is a sectional view taken along line A-A in FIG. 3, and FIG. Figures are shown respectively. In FIGS. 3 to 5, the reference numeral 90 indicates a casing made of synthetic resin or the like, and this casing has approximately the same external shape as the casing main body 11 in FIG. 2 described above, but the side shown in FIG. It has an integral structure in which a side wall portion corresponding to the lid 14 is integrally molded. Similarly to FIG. 2, the weight 91 is formed into a semi-cylindrical shape, and a central shaft hole 91a is formed through the semicircular center of the weight 91 as a tilting angle sensing means, and a permanent hole 91a is formed in the both side edges. A magnet 91b is embedded to penetrate in the axial direction. The weight 91 is rotatable, for example, by 90 degrees left and right about a central axis 92 passing through a semicircular central axis hole 91a, and is mounted in the semicylindrical bottom of the casing 90. Both ends of the central shaft 92 are supported by the bottoms of grooves 90b vertically formed in the inner wall surfaces of the casing 90 at both ends.

The weight 91 is made of synthetic resin or the like, and a weight (for example, lead) is embedded inside to adjust the balance appropriately so that the permanent magnets 91b on both sides are always in a horizontal position regardless of the inclination angle of the casing 90. ing. Reference numeral 93 indicates an upper lid whose bottom part is molded into a semi-cylindrical shape from a synthetic resin, and whose entire periphery in the form of a flange is placed and fixed on a horizontal step 90a provided on the inner peripheral wall of the upper end opening of the casing 90. .
The lower wall of this upper lid 93 cooperates with the bottom inner wall of the casing 90 to form a space 94 having a substantially circular cross section. A hanging wall 93a is formed in the center of the upper lid 93 in the axial direction. Furthermore, an oil inlet 93b is provided in the upper lid 93 and is closed with a plug 95. Above the center part of the upper lid 93 is the hanging wall 93a.
A reed switch 96 is installed along the
This reed switch 96 is connected to an electric circuit 98 provided on an electric circuit board 97 as a detection means arranged above the top lid 93.
is connected to the input side of the electronic fuel control system 10 shown in FIG. 1 via a lead wire 98a. The lead wire 98a is attached to the upper wall of the upper end opening of the casing 90 by a grommet 98b. The space between the upper lid 93 and the electric circuit board 97 and the electric circuit board 97 in the upper end opening of the casing 90
The upper part is filled with resin 99. In FIG. 5, the inclination angle detection device 9 is formed with mounting flanges 90c, 90c integrally extending from both sides, and is attached to the side wall via the flanges, bolts 8a protruding from the side wall of the battery case 8, and the rubber damper 6. There is.

Next, a method of assembling the inclination angle detection device 9 configured as described above will be explained.

The center shaft 92 is press-fitted into the bottom of the groove 90b on the inner wall at both ends of the casing 90 from above, and the weight 91 is inserted into the space 9.
4, then attach the upper cover 93 to the casing 9.
0 and fixed on the horizontal step 90a of the upper end opening. Next, damper oil is filled into the space 94 from the oil inlet 93b, and the oil inlet 93b is connected to the plug 9.
Blocked at 5. Furthermore, an electric circuit board 97 is placed above the top cover 93 and filled with resin 99 to complete the assembly.

The effects of the above-mentioned inclination angle detection device of the present invention will be explained below.

Now, when the tilt angle of the vehicle exceeds a predetermined value and the weight 91 rotates to the position shown by the broken line in FIG. A signal indicating that the angle of inclination of the vehicle has exceeded a predetermined value is supplied from the electric circuit 98 to the electronic fuel control device 10 .

When the weight 91 rotates to the position shown by the broken line in FIG. It flows through the gap with the semi-cylindrical bottom. The sizes of these gaps are set to appropriate values to provide a damper effect to the rotation of the weight 91.

According to the inclination angle detection device of the present invention having the configuration detailed above, the inclination angle detected by the casing, the inclination angle sensing means rotatably mounted in the casing, and the inclination angle sensing means is A vehicle inclination angle detection device comprising a detection means for outputting a detection signal when a predetermined value is exceeded, and in which oil is filled between the casing and the inclination angle detection means, wherein the casing has an upper end opening extending upwardly. The casing is formed into an integral structure so as to have a substantially semi-cylindrical casing bottom at the bottom, and the inclination angle sensing means is housed in the casing bottom, and the inclination angle sensing means is located above the inclination angle sensing means and the upper end opening is located at a position above the inclination angle sensing means. A step is provided on the inner circumferential wall, a lid having an oil inlet that covers the inclination angle sensing means and is capable of sealing filled oil is fixed to the step, and the sensing means including the electric circuit board is fixed to the step. It is characterized in that the space forming the casing above the lid is filled with resin and fixed by hardening, and it is possible to reliably prevent oil leakage of damper oil, and further,
While making effective use of the space in the casing, we have achieved vibration isolation for electrical parts, waterproof effects, and double leakage prevention effects for the damper oil inside the casing, thereby increasing the reliability of the vehicle tilt angle detection device and improving the manufacturing process. Productivity can be improved by simplifying management and the like.

[Brief explanation of the drawing]

Fig. 1 is a side view of a motorcycle equipped with an inclination angle detection device, Fig. 2 is a diagram illustrating a conventional inclination angle detection device, and Fig. 3 is a partial cross-sectional front view of the structure of the inclination angle detection device according to the present invention. 4 is a sectional view taken along the line AA in FIG. 3, and FIG. 5 is a partially sectional side view of the present invention attached to a battery of a motorcycle. 1...Engine, 3...Fuel injection nozzle, 5...
...Fuel pump, 9...Inclination angle detection device, 10...
...electronic fuel control device, 90...casing, 9
1... Weight, 93... Top lid, 96... Reed switch, 97... Electric circuit board, 99... Resin.

Claims (1)

[Scope of utility model registration request] A casing, an inclination angle sensing means rotatably mounted in the casing, and a detection means for outputting a detection signal when the inclination angle sensed by the inclination angle sensing means exceeds a predetermined value, In a vehicle tilting angle detecting device in which oil is filled between a casing and a tilting angle sensing means, the casing is integrally constructed so as to have an upper end opening at the top and a substantially semicylindrical casing bottom at the bottom. molding, storing the inclination angle sensing means in the bottom of the casing, and providing a stepped portion on the inner circumferential wall of the upper end opening above the inclination angle sensing means;
A lid formed with an oil inlet capable of covering the inclination angle sensing means and sealing filled oil is fixed to the stepped portion, and the sensing means including an electric circuit board forms a casing above the lid. A vehicle inclination angle detection device characterized in that the space in which the vehicle falls is filled with resin and fixed by hardening.