JPS6239295Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to guidelines for various instruments such as automobiles, motorcycles, and ships.

Generally, in this type of meter, a pointer 3 is press-fitted into a pointer shaft 2 formed in a meter body 1, as shown in FIGS. 1 and 2. Further, a dial plate 5 is fixed to the instrument body 1, and has a display index 4 such as a scale or letters that can be read by comparison with the indication of the pointer 3.

In this case, a through hole 6 through which the pointer shaft 2 is inserted is formed in the dial 5.

By the way, generally speaking, an indicating instrument has a dial 5 attached to the instrument body 1, and the scale and
The pointer 5 is attached to the instrument body 1 so that the pointer 3 points along the display index 4 such as characters, and the mechanism of the instrument body 1 is finely adjusted so that the pointer 3 operates within the specifications of the display index 4 on the dial plate 5. We have adjusted the instructions accordingly.

Therefore, if a defect occurs in an indicating instrument installed in a car, for example, even if at least one part of the instrument body 1, pointer 3, and dial plate 5 is defective, the instrument body 1 will be damaged. After attaching the pointer 3 to the pointer shaft 2, the indication is adjusted by matching the indication of the pointer 3 to the display indicator 4 on the dial 5. Therefore, the pointer 3 may be removed and, for example, only the defective pointer 3 replaced. When the pointer 3 is reassembled on the dial 5, the fitting of the pointer shaft 2 and pointer 3 may be poor due to deformation of the fitting portion of the two, deformation of the pointer shaft 2, and errors in indication adjustment may occur.
This may lead to a decline in quality, and considerable skill may be required to replace parts.

Therefore, if a defect occurs in the indicating instrument, it is common to replace the entire indicating instrument, which includes the instrument body 1, dial 5, and pointer 3, which have already been adjusted, which increases the cost of parts replacement. It also leads to factors.

In order to avoid this, there is a device in which a slit 7 is formed to bridge between a through hole 6 formed in the dial 5 and the outer peripheral side of the dial 5, as shown in FIG. In this case, by providing a slit 7 in the dial plate 5 through which the pointer shaft 2 portion with the pointer 3 attached to the meter body 1 shown in FIG. 2 or the base portion of the pointer 3 can be inserted. The dial plate 5 side can be attached and detached with the pointer 3 attached, so that the dial plate 5 or the instrument body 1 side with the pointer 3 attached can be replaced.

In addition, as shown in FIG.
It is also conceivable to form a slit portion 7A and allow the pointer 3 to pass through the slit portion 7A.

However, the positions of the slits 7 and slit portions 7A must not only be selected at locations that do not pose any particular problems in terms of the design of the display indicators 4 such as scales and letters on the dial 5, but also the positions of the slits 7
A board (not shown) of the same color as the dial plate 5 is attached to the instrument body 1 in correspondence with the slit portion 7A, and when the dial plate 5 is attached to the instrument body 1, the slit 7 and the slit portion 7A are connected to the substrate. It needs to be blocked off, which is not very desirable in terms of design.

Furthermore, since the pointer 3 is attached to the meter body 1, it is not suitable for replacing only the pointer 3 or the meter body 1 alone.

In addition, for indicating instruments, in order to ensure good readability at night, a translucent dial is placed in close contact with the surface of a light guide made of synthetic resin, and the surface of this dial is Display indicators such as letters and scales are applied to the dial board to form a dial board, and the irradiated light from the illumination lamp is guided into the light guide, and the display indicators formed on the dial are brightly illuminated by the light rays from the light guide. In recent years, translucent pointers such as acrylic resin have been used, and the light from the illumination lamp enters the base of the pointer through the light guide to brightly illuminate the pointing section of the pointer. A lighting device using a light guide has been proposed to improve visibility.

However, when the dial 4 shown in FIG. 3 or 4 is used, the dial 4 is placed below the dial 4.
If you arrange a light guide with a notch equivalent to the slit 7 or slit portion 7A, guide the irradiated light from the illumination lamp into the light guide, and make this light enter the base of the pointer, The light beam may be scattered by the cutout portion of the light guide, and the amount of light entering the inside of the pointer may be insufficient.

This invention focuses on the above-mentioned problem, and allows parts such as the instrument body, dial, or pointer to be easily attached and detached without disturbing the indicating characteristics of the indicating instrument. This patent relates to an improved structure of Utility Application No. 1987-75126 presented in

An embodiment of this invention will be described below with reference to FIGS. 5 to 9.

In the same figure, a meter body 11 is housed and fixed inside a meter housing 10, and this meter body 11
A pointer shaft 12, which constitutes a part of the instrument body 11, is formed to protrude upward.

A light guide 13 made of acrylic resin or the like is disposed above the instrument body 11, and a through hole 14 through which the pointer shaft 12 is inserted is formed in the light guide 13. A light guide reflection surface 15 is formed by cutting the inner wall of the hole 14.

A dial plate 16 made of a synthetic resin such as polycarbonate and having translucent properties on the surface side of the light guide 13
are arranged in a laminated manner, and the dial 16 is formed with a notch 17 that is cut out at a position corresponding to the light guide reflective surface 15 of the light guide 13.
A display index 18 such as a transparent scale or characters is formed on the surface of the display 6 .

In this case, the light guide 13 and dial plate 16 are fixed to the instrument body 11 with screws 19, and an illumination light 20 is provided at the end of the light guide 13.

Therefore, a pointer seat 2 is provided at the upper end of the pointer shaft 12.
In this case, the pointer shaft 12 is formed on the lower side of the pointer seat 21.
A press-fit hole 22 for press-fitting the upper end portion is formed, and a threaded portion 23 is formed on the upper side thereof,
Further, a rotation preventing portion 24 is formed on the lower outer periphery of the threaded portion 23 of the pointer seat 21.

The pointer 25 is made of a translucent material such as acrylic resin, and the pointer 25 has a base 26 attached to the pointer shaft 12 side, and the pointer 25 is arranged almost parallel to the dial 16. An indicator portion 27 is integrally formed from the base portion 26, and the screw portion 2 of the pointer seat 21 is attached to the base portion 26.
3, and a detent hole 29 that engages with the detent portion 24 of the pointer seat 21 are formed.

Further, from the center of the base 26 to the base 26 located on the base end side of the indicator 27 of the pointer 25, the indicator 27
A reflective surface 30 is formed at an angle of approximately 45 degrees toward the direction of the indicator 7, and a reflective surface 31 is formed at the rear side of the insertion hole 28 in the base 26 at an angle of approximately 45 degrees toward the indicator 27 from the rear end of the base 26. Furthermore, a locking pin 32 is erected on this reflective surface 31 portion, and guide walls 33 are provided on both sides of this locking pin 32.

Also, on the side of the pointer 25 opposite to the instruction part 27,
Both the guide walls 3 are inserted through the locking pin 32.
A balance weight 34 for maintaining the weight balance of the entire pointer 25 is attached and held along the line 3.

Further, when the pointer 25 and the pointer seat 21 are attached, the fixing nut 3 is screwed into the threaded portion 23 of the pointer seat 21 protruding from the upper surface side of the base 26 of the pointer 25.
5 is provided, in this case this fixing nut 3
5 is made of a magnetic material such as iron, and serves as one magnetic coupling member.

Further, a pointer cap 36 that covers the upper surface side and the circumferential side of the base portion 26 of the pointer 25 is formed of a light-shielding material, and this pointer cap 36 is provided with a fixing nut 35 that is one of the above-mentioned magnetic coupling members.
A magnet 37, which serves as the other magnetic coupling member, is buried opposite to the magnet 37.

The assembly of the above configuration will be explained.
First, when the base 26 side of the pointer 25 is inserted into the pointer seat 21, the detent hole 29 formed in the base 26 of the pointer 25 is inserted and engaged with the detent portion 24 formed in the pointer seat 21, and the pointer 25 and the pointer 25 is held in a non-rotating manner.

At this time, the screw portion 23 formed on the pointer seat 21 is inserted into the insertion hole 28 of the pointer 25, and the upper end portion of the screw portion 23 is arranged to protrude from the upper end surface of the base portion 26 of the pointer 25. In this state, the fixing nut 35 By screwing into the screw portion 23 of the pointer seat 21 and tightening, the pointer seat 21 and the pointer 25 are integrally fixed. Further, after attaching and holding the balance weight 34 along the locking pin 32 formed on the base 26 of the pointer 25 and the guide wall 33, the pointer cap 36 is placed over the base 26 of the pointer 25, and at the same time,
A fixing nut 35, which is one magnetic coupling member that fixes the pointer 25 to the pointer seat 21, and a pointer cap 36.
The base 26 side of the pointer 25 and the pointer cap 36 are attracted to each other due to the magnetic force exerted by the magnet 37, which is the other magnetic coupling member provided in the
The sides can be magnetically coupled and fixed, making it easy to assemble and fix with one touch.

Further, the dial 16 and the light guide 13 are fixed to the instrument body 11 side via screws 19, and then the press-fit hole 22 of the pointer seat 21 assembled to the pointer 25 side is inserted into the notch of the dial 16. 17 and the pointer shaft 12 located in the through hole 14 of the light guide 13 is press-fitted. At this time, the indicator 27 of the pointer 25 is press-fitted into the indicator 18 provided on the dial 16 so that the direction of the indicator 27 matches, and the instrument body 11 is finely adjusted to adjust the indication, thereby assembling the entire instrument mechanism. ends.

Therefore, the irradiated light from the illumination lamp 20 is transmitted to the light guide 1.
3, is guided to the base 26 side of the pointer 25 via the light guide reflective surface 15 of the light guide 13, and is guided to the base 26 side of the pointer 25.
The light is reflected by each of the reflecting surfaces 30 and 31 formed on the surface and guided toward the indicator 27, so that the indicator 27 of the pointer 25 is illuminated.

By the way, to explain the case where, for example, the pointer 25 mechanism is replaced among the instrument body 11 mechanism, dial 16 mechanism, and pointer 25 mechanism, first, the pointer cap 36 side of the pointer 25 mechanism and the base 26 side of the pointer 25 are replaced. The pointer cap 36 is removed against the magnetic coupling force with the base 26 of the pointer 25.
Rotate the fixing nut 35 that has been tightened to loosen it, and remove the fixing nut 3 from the threaded part 23 of the pointer seat 21.
5, and then remove the pointer 25 from the pointer seat 21 side while raising the pointer 25. At this time, since the pointer seat 21 is press-fitted into the pointer shaft 12 of the instrument body 11, it is supported and held as it is on the instrument body 11 side.

Subsequently, when attaching another pointer 25 to the pointer seat 21, the detent hole 2 formed in the base 26 of the pointer 25 is inserted along the detent portion 24 formed in the pointer seat 21.
9 is inserted and locked, thereby indicating the direction of the pointer seat 21 which is press-fitted and fixed to the instrument body 11 in the initially assembled instrument body 11 with the indication adjustment completed, that is, the same direction as the direction of the indicating portion 27 of the pointer 25 which is first assembled. Another pointer 25 can be assembled in this state, and parts replacement work can be performed without the indicated position of the pointer 25 being out of order.

After attaching the pointer 25, the pointer 25 is fixed to the instrument body 11 side by tightening the fixing nut 35 to the screw portion 23 of the pointer seat 21, and then one of the magnets arranged on the base 26 side of the pointer 25 is fixed. The base 26 of the pointer 25 is magnetically coupled to the fixing nut 35, which is a coupling member, and the magnet 37, which is the other magnetic coupling member provided on the pointer cap 36 side.
The pointer cap 36 can be easily attached to the side, thereby completing the rearrangement of the pointer 25.

In addition, when replacing the dial 16 or the instrument body 11, disassemble the dial 16 by following the same procedure as when replacing the pointer 25 described above, and then disassemble the dial 16.
By removing the screw 19 on 6, the dial 16
or the instrument body 11 can be replaced.

Figure 10 shows each embodiment of this invention.
In FIG. 10A, a fixing nut 35A serving as one magnetic coupling member is formed of a magnet, and a magnet 37 serving as the other magnetic coupling member is fitted and fixed in the pointer cap 36. The fixing nut 35 consisting of
The 6 side and the pointer cap 36 side are magnetically coupled and fixed.

Further, in FIG. 10B, the fixing nut 35 serving as one magnetic coupling member is formed of a magnet, and the pointer cap 36 is provided with a magnetic body 37A such as an iron plate serving as the other magnetic coupling member. The magnetic body 37A is attracted to the fixed nut 35 made of a magnet, and the pointer 25 is thereby attracted.
The base 26 side and the pointer cap 36 side are magnetically coupled and fixed.

Although not shown in the drawings, the other magnetic coupling member disposed on the pointer cap may be extended to the opposite side of the pointer to the pointing portion to serve also as a balance weight.

As detailed above, a pointer seat equipped with a rotation stopper that determines the orientation of the pointer indicator is press-fitted and fixed to the pointer shaft of the instrument body, and the base of the pointer is attached to this pointer seat to form the pointer seat. The pointer can be easily attached or removed by tightening the fixing nut on the threaded part, and by using the fixing nut as one magnetic coupling member and arranging the other magnetic coupling member on the pointer cap. The base side of the pointer and the pointer cap side can be magnetically connected and separated with a single touch operation, increasing the efficiency of assembly work.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the conventional device, Fig. 2 is a plan view showing the main part of Fig. 1 in cross section, and Figs. 3 and 4 are dial plates showing other embodiments of the conventional device. Fig. 5 is a front view showing the top of the dial, Fig. 6 is a plan view showing the main part of Fig. 5 in cross section, and Fig. 7 is an enlarged cross section of the main part of Fig. 6. Figure 8 is an exploded cross-sectional view of the main parts of Figure 7, Figure 9 is a perspective view of Figure 8, and Figures 10A and B are cross-sectional views of the main parts showing other embodiments of this invention. . 10... Housing, 11... Instrument body, 12
... pointer shaft, 13 ... light guide, 14 ... through hole,
15... Light guiding reflective surface, 16... Dial plate, 17...
Notch portion, 18...display index, 19...screw,
20... Illumination light, 21... Pointer seat, 22... Press-fit hole, 23... Threaded portion, 24... Rotating portion, 25
... Pointer, 26 ... Base, 27 ... Indication section, 28
...insertion hole, 29...rotation hole, 30, 31...
... Reflective surface, 32 ... Locking pin, 33 ... Guide wall, 34 ... Balance weight, 35, 35A ...
... Fixing nut, 36 ... Pointer cap, 37 ...
Magnet, 37A...magnetic material.

Claims (1)

[Scope of utility model registration request] In a device in which the pointer is attached to the pointer shaft of the instrument body, a press-fit hole into which the upper end of the pointer shaft is press-fitted is provided in the pointer seat, a threaded portion is formed on the upper end side of the pointer seat, and a screw portion of the pointer seat is formed. A rotation preventing portion is formed at the lower part, the pointer has a base portion attached to the pointer shaft side, and an indicator portion extending from the base portion, and the base portion has an insertion hole through which the threaded portion of the pointer seat is inserted. and a locking hole that engages with the locking portion of the pointer seat, and a fixing nut located on the upper surface side of the base of the pointer and screwed into the threaded portion of the pointer seat; is formed as one magnetic coupling member, and the other magnetic coupling member that magnetically couples with the one magnetic coupling member is provided on the pointer cap that covers the upper surface side and the circumferential side of the base of the pointer. Indicating instrument.