JPS622899Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improved structure for attaching a vehicle generator to a vehicle, which is mounted on a vehicle and charges a storage battery or supplies power to an electric load device of the vehicle.

First, FIG. 1 shows a situation in which a vehicle generator is mounted on a vehicle. In the figure, 1 is a driving shaft pulley provided on the output shaft of the engine 2, 3 is a generator, 4 is a cooling fan for cooling the engine 2 and a radiator (not shown), and 5 is the generator 3 and the cooling fan 4. The V-belt for driving the generator 3
The groove pulley 6 is stretched between the V-groove pulley 7 of the cooling fan 4 and the drive shaft pulley 1.

In the vehicle engine configured as above,
The generator 3 is fixedly attached to the engine at two bolt fastening points 8 and 9. That is, FIG. 2 is a diagram showing the internal structure of a conventional generator and the mounting and fixing state of the engine at one of the mounting portions 8 shown in FIG. 1. Note that the same applies to the other attachment parts 9, so the description thereof will be omitted. In FIG. 2, 10 is the rotating shaft 11
A rotary shaft 14 is driven by a V-groove pulley 6 fixed with a nut 13 together with a fan 12 at the tip of the rotor, and a V-belt stretched between the drive shaft pulley 1 of the engine 2; 15 is a rectifier to which the output of the three-phase winding is connected and converts alternating current into direct current; 16 is a stator that maintains the output voltage of the generator at a predetermined value. This voltage regulating device is arranged on the back side of the holder 20 of the brush 19 that supplies excitation current to the field coil 18 of the rotor through the slip ring 17 of the rotor. A front bracket 21 supports a bearing 22 inserted into one end of the rotating shaft 11 and one end of the stator 14;
a and 21b are integrally formed by casting. 23 is a bearing 2 inserted into the other end of the rotating shaft 11.
4, and the rectifier 15, voltage regulator 16,
A rear bracket that supports the brush holder 20 and one end of the stator 14 is integrally formed with a mounting leg 23a by casting.

25 is the output terminal, 26 is the front bracket 2
1 and the rear bracket 23 through the iron core of the stator 14.

By the way, in the conventional generator 3 configured as described above, the mounting bolts 27 and nuts 28 are connected via the mounting legs 21a and 23a in the 8 parts of the engine mounting diagram of the generator shown in FIG. Fixed to engine 2. Reference numeral 29 is an auxiliary tool for fixing the nut 28 so that it does not rotate when the mounting bolt is tightened.

Figures 3 and 4 are partial views of the mounting foot 23a on the rear bracket 23 of a conventional generator, and the mounting bolt 2
A mounting hole 30 into which 7 is inserted is provided.

Conventional vehicle generators are constructed as described above, so mounting bolts and nuts are required to attach the generator to the engine, and when tightening the mounting bolts, use a wrench to prevent the nuts from rotating together. This requires auxiliary tools such as auxiliary tools, making the work extremely difficult.
Due to the increase in the number of engine-mounted parts and auxiliary equipment such as piping due to the shift to FF, auxiliary tools such as spanners to prevent nuts from turning can come into contact with the engine and auxiliary equipment and cannot be inserted, resulting in work failures. There were drawbacks such as being able to do so.

This idea was made in order to eliminate the above-mentioned drawbacks. When installing the generator on the engine, a nut to be used as a pair with the mounting bolt is provided on the generator side in advance, and the nut is prevented from rotating on the generator side. By configuring it to have this function, there is no need to prepare a nut when installing the generator to the engine, and there is no need for an auxiliary tool to prevent the nut from rotating.It is extremely easy to work with and can be installed in a narrow space. The purpose is to provide an excellent mounting device that allows the generator to be easily mounted even in a small space.

An embodiment of this invention will be described below with reference to FIGS. 5 to 7. Mounting foot 2 of rear bracket 23
Nut storage box 3 having a hexagonal or other shaped recess at one end of 3a to prevent the nut 28 from rotating.
1 and a cylindrical cover 32 around the nut storage box 31 are integrally cast with the mounting legs 23a, and a mounting hole 30 is provided in the center of the nut storage box 31. A pair of nuts 28 used together with the mounting bolts 27 are attached to the nut storage box 31.
In order to prevent the nut 28 from falling off during the transport process until the generator is assembled into the vehicle, a cylindrical shape is provided around the nut storage box 31 through the processing process described below. cover 32
The tip is crushed and sealed.

That is, FIG. 7 is a view showing the process of sealing the nut inserted into the nut storage box of the generator of this invention, and FIG. 7A shows the state of the cover 32 before being processed. In the figure, 23a is a mounting foot, 28 is a nut, 30
3 is a mounting hole, 31 is a nut storage box, 32 is a cylindrical cover, and the tip of the cover 32 is formed to be slightly long to allow for crushing allowance. In the state set up as described above, in the next step, the press mold 33 is lowered onto the tip of the cover 32 as shown in FIG. The tip of the cover is crushed to a diameter d that does not fall off from the nut storage box 31. (Nut large diameter D>cover tip diameter d).

According to the above-mentioned invention, the nut used in pair with the mounting bolt when attaching the generator to the engine is provided in advance on the generator side, and a mechanism for preventing rotation of the nut is provided on the generator side. Since there is no need to prepare a nut when installing the engine, and no auxiliary tools are required to prevent the nut from rotating, the workability is very good, and the generator can be easily installed even in a narrow installation space. It has a remarkable effect.

In addition, instead of casting the mounting foot and nut as one unit or applying thread cutting, we installed a standard nut, which is a mechanical part, separately from the mounting foot, and installed a nut storage box to prevent the nut from falling off. Since the tip is sealed by crushing it, it has many advantages, such as reducing overall costs including processing and assembly costs.

[Brief explanation of the drawing]

Figure 1 is a diagram of the engine installation of the generator, Figure 2 is a detailed diagram of the internal structure and engine installation of a conventional generator, Figure 3 is a side external view of the rear bracket mounting foot of a conventional generator, and Figure 4 is Fig. 3 is a sectional view taken along the - line in Fig. 3; Fig. 5 is a side external view of the rear bracket mounting foot of the generator of this invention; Fig. 6 is a sectional view taken along the - line in Fig. 5;
The figure is a diagram showing the process of sealing the nuts stored in the nut storage box of the generator of this invention. In the figure, 2 is the engine, 3 is the generator, 21a, 21
b, 23a are mounting feet, 27 is a mounting bolt, 28 is a nut, 31 is a nut storage box, and 32 is a cylindrical cover. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a vehicle generator that has a mounting leg for mounting on an engine and is fixed to the engine with a mounting bolt and nut, the nut integrally formed around a bolt insertion hole at one end of the mounting leg also serves as a rotation stopper. A nut storage box, a cylindrical cover integrally formed around an end of the nut storage box, and a nut stored in the nut storage box and sealed by crushing the cylindrical cover. A vehicle generator featuring: