JP2985920B2 - Instrument unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument unit mounted on a vehicle such as an automobile and a motorcycle, and more particularly to a counter mechanism for preventing a counter mechanism mounted on the instrument unit from being turned over.

[0002]

2. Description of the Related Art Heretofore, various types of instruments such as a speedometer and an engine tachometer and a counter mechanism for integrating and displaying a running distance have been integrally assembled via a frame to form a unit. An instrument unit of this type includes a counter mechanism including a plurality of display wheels, a driving motor such as a guard motor for driving the counter mechanism, and a cross-coil movable magnet used for a speedometer or the like. The instrument and the instrument are integrally assembled and fixed to a frame consisting of a frame, and a display plate is arranged above the display wheel. On the upper surface of the display plate, a pointer shaft of a cross coil type movable magnet type instrument is provided. A pointer having a pointing portion extending and extending substantially parallel to the display plate is fixed to the tip of the pointer shaft by press-fitting. (For example, Japanese Utility Model Laid-Open No. 4-71111, Japanese Utility Model Laid-Open No. 4-7111)
No. 8, JP-A-4-36667, JP-A-3-2
No. 82991)

In such an instrument unit, a window is formed at a display plate position corresponding to the display wheel of the counter, and the count of the display wheel is visually recognized through the window. The counter can be easily installed by inserting a rod-shaped device from the window into the counter mechanism while it is mounted on the vehicle and forcibly reversing the display wheel or the pinion (carrying mechanism) connected to the display wheel. In order to prevent this, a counter mechanism provided with a reverse rotation preventing member has been proposed. (For example, Japanese Utility Model Publication No. 58-12269, Japanese Utility Model Publication No. 5
No. 7-47868)

[0004]

However, even if such an anti-reverse means is provided in the instrument unit, if the instrument unit is removed from the vehicle, the drive motor can be easily removed from the frame in the conventional example. Can be removed to
If a motor for reverse rotation is mounted instead of a regular drive motor, there is a problem that the reverse rotation can be easily performed without fear of damaging the counter mechanism.

In consideration of this point, it is conceivable to fix the drive motor to the frame by welding. However, the welded portion formed by welding can be easily removed with a sharp blade or the like. If an adhesive or the like is used, the driving motor can be re-fixed to the frame, so that it has not been a fundamental solution.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an instrument unit capable of preventing removal of a driving motor and preventing reverse rotation of a counter. .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a counter having a plurality of display wheels rotatably held on a support shaft so as to be able to carry out a shift, and a support shaft of the counter. A frame which is held above the base, a display plate which is located above the display wheel and which is provided so that the display wheel can be visually recognized from the outside, and which is disposed below the base of the frame; An instrument main body having a pointer shaft inserted into the display panel side through the frame, and an indicating portion fixed to the tip of the pointer shaft of the instrument main body and extending substantially parallel to the display panel. A driving motor provided with a pointer, a driving gear mounted on and fixed to the frame accommodating portion located on the lower digit side of the display wheel, and having a driving gear for driving the display wheel; It is formed on at least one of the instrument main bodies and regulates removal of the drive motor. Those having a control unit.

A counter comprising a plurality of display wheels rotatably held on a support shaft so as to be able to shift by a shift; a frame for holding a support shaft of the counter above a base portion thereof; A display plate positioned above the wheel so that the display wheel can be visually recognized from the outside; and a display plate disposed below the base of the frame and through the frame to the display plate side. A meter body having a pointer shaft to be inserted, a pointer having an indicating portion fixed to the tip of the pointer shaft of the meter body and extending substantially parallel to the display plate, and located at a lower digit side of the display wheel; The frame
A drive motor mounted on and fixed to a housing portion of the instrument and provided with a drive gear for driving the display wheel; and
The drive motor covers the fixed portion of the drive motor to the frame.
And a covering portion for controlling the removal of the cover.

[0009]

According to the present invention, the drive motor or the restricting portion formed on the instrument main body abuts both of them, making it impossible to remove the drive motor.

Further, according to the present invention, the covering portion formed on the instrument main body covers the fixing portion of the driving motor to the instrument frame, making it impossible to remove the driving motor.

【Example】

FIGS. 1 to 3 show a first embodiment of the present invention. Hereinafter, the first embodiment of the present invention will be described with reference to FIG.

The instrument unit according to the present embodiment displays a counter mechanism 1 composed of two types of counters, a drive motor 2 for driving the counter mechanism 1, and a vehicle speed and the like according to an applied voltage based on a measurement signal. For example, an instrument main body 3 composed of a cross-coil movable magnet type instrument, a synthetic resin frame 4 integrally assembled with them, and this frame 4
And a pointer 6 connected to the instrument main body 3 on the upper surface of the display plate 5.

In this case, the counter mechanism 1 comprises a resettable reset counter 7 for displaying a trip of the vehicle travel distance, and a non-resettable od counter 8 for displaying an integrated display of the vehicle travel distance. Numerals 7 and 8 are provided so that a plurality of display wheels 9 are rotatably held on a support shaft 10 by a feed operation.
At the end of the display wheel 9 which is the lowest digit of the display wheels 9, a connecting gear 11 which is connected to a drive motor described later and carries the display wheel 9 is fixed to the support shaft 10. The counter mechanism 1 is located on the upper surface of the base portion 13 of the frame 4 defined by the partition wall 12, and its support shaft 10
Are welded and held by holding portions 14 formed on the side surfaces of the frame 4.

The reset counter 7 is provided with a reset mechanism 15 for resetting the reset counter 7. The reset mechanism 15 performs a reset operation on a C-shaped holding piece 16 formed on the side wall of the frame 4. It is kept possible.

The driving motor 2 has a motor 18 inside a case 17.
And the motor body outside the case 17
A drive gear 19 is provided to output the drive of 18 to the connection gear 11 of each of the counters 7 and 8. This drive motor 2
Are accommodated from below in a housing portion 20 formed on the side surface of the frame 4. At this time, the drive motor 2 can be attached and guided to the housing portion 20, and a guide is provided on the frame 4 side. A wall 21 is formed, and a pair of guide grooves 22 are formed on the case 17 side of the drive motor 2 along the guide wall 21 so that the drive motor 2 can be stored therein. After the drive motor 2 is mounted on the accommodating portion 20, the drive motor 2 is attached to the frame 4 by a fixing member such as a screw (not shown) through a mounting hole 23a formed in the lower portion of the case 17. The drive motor 2 is securely fixed to the frame 4 without looseness.

The frame 4 of the case 17 of the driving motor 2
A restricting arm piece 24 having a stepped portion 23 whose upper surface is in contact with the frame 4 and whose lower surface is fitted to the instrument main body 3 to restrict the removal of the drive motor 2 is provided on the side wall portion. It is formed integrally from the case 17.

The instrument body 3 comprises a cross-coil movable magnet type instrument, and a bobbin case 26 around which a cross coil 25 is wound.
A magnet rotor 27 which rotates in accordance with a voltage flowing through the cross coil 25 is accommodated therein, and a pointer shaft 28 is fixed to the magnet rotor 27, and the pointer shaft 28 is connected to a bobbin case.
The bearing is held at 26, and a leg 29 is formed integrally with the bobbin case 26 outside the bobbin case 26. A terminal 30 for energizing the cross coil 25 and the outside is embedded in the leg 29. The instrument body 3 has a bracket 32 formed at the lower portion of the leg portion 29 and having a hole 31 for fixing the instrument body 3 to the frame 4 via an attachment member such as a screw (not shown). When the instrument main body 3 is fixed to the frame 4, the leg portion 29 of the main body 3 is fitted in contact with the lower surface of the regulating arm piece 24 of the drive motor 2 when the instrument main body 3 is fixed to the frame 4. A regulating piece 33 for regulating the removal of the drive motor 2 is integrally formed. In this embodiment, a regulation section 34 for regulating the removal of the driving motor by the regulation piece 33 and the regulating arm 24. Is composed. Reference numeral 35 denotes a shield case for shielding disturbance factors such as geomagnetism.

The instrument main body 3 is attached to the frame 4 from below the frame 4. At this time, the distal end of the pointer shaft 28 passes through the inside of the frame 4 and the upper part of the frame 4 A through hole 36 is formed in the frame 4 so that the frame 4 can be inserted.

The display plate 5 has a display portion 37 formed of numerals and scales on the surface thereof, and a mounting hole 38 formed so that a pointer 6 described later is positioned on the display plate 5 and can be fixed to a tip end of the pointer shaft 28. ,
It has a pair of windows 39 so that the display of the counter mechanism 1 located on the back surface of the display plate 5 can be viewed from above, and the display plate 5 is mounted and fixed on the upper side of the frame 4. At this time, a fixing hole 40 is formed on the display plate 5 side and a receiving hole 41 is formed on the frame 4 side so that the display plate 5 can be attached to the frame 4. Display plate 5 is screwed
The screw is fixed by 42.

The pointer 6 has an indicator 43 extending substantially parallel to the display plate 5 and a mounting portion 44 which is press-fitted and fixed to the pointer shaft 28. The pointer 6 is fixed to the pointer shaft 28. Pointer axis
By rotating together with 28, it is possible to read and contrast the instruction unit 43 and the display unit 37.

In this case, since the fixing strength of the pointer 6 fixed to the pointer shaft 28 is set higher than the breaking strength of the pointer, the front side of the display plate 5 is manually or manually operated by a tool such as a driver or pliers. If the instrument main body 3 is forcibly removed from the lower side of the frame 4 or from the lower side of the frame 4, the pointer 6 is broken.

As described above in detail, in the present embodiment, the removal of the drive motor 2 is regulated by the regulation arm piece 24 formed on the drive motor 2 and the regulation receiving piece 33 formed on the instrument body 3. In order to remove the drive motor 2 in order to reverse the counter mechanism 1, the pointer shaft 28 of the instrument body 3 is provided.
If the pointer 6 is destroyed, the instrument unit cannot be restored to its original state. Therefore, the removal of the drive motor 2 must be abandoned. This makes it impossible to remove the drive motor 2 and prevents the counter mechanism 1, in this case, the od counter 8 that cannot be reset, from rotating in the reverse direction.

FIG . 4 shows a second embodiment of the present invention.
In the embodiment, the driving motor 2 is integrally formed from the case 17 of the driving motor 2.
With a screw hole 46 for attaching and fixing the frame 2 to the frame 4.
The attachment piece 47 is formed so as to protrude, and through the screw hole 46 of the attachment piece 47.
The drive motor 2 is mounted and fixed to the frame 4 with screws 48.
A fixing section 49 is provided, and the instrument body 3 is
Forming a covering portion 50 for covering the portion 49 from below the frame 4;
By covering the fixing portion 49 with the covering portion 50, the driving motor
Equivalent to the regulation part 34 of the first embodiment for regulating the removal of
And the other parts
Are substantially the same as those in the first embodiment, so
The same reference numerals are given to the same or similar parts, and the detailed description is omitted.
You.

As described in detail above, in this embodiment, the drive
A covering part that covers the fixed part 49 of the moving motor 2 from below the frame 4.
By forming 50, the same effect as in the first embodiment is obtained.
Fruit can be obtained.

In this embodiment, the mounting piece of the driving motor 2 is used.
The case where 47 is mounted and fixed with screws 48 is shown,
The mounting fixing means forming 49 can be set as appropriate, for example
For example, means by welding may be used.

FIG . 5 shows a third embodiment of the present invention.
In the embodiment, the drive gear 19 of the drive motor 2 is moved from the side of the case 17.
An outwardly projecting portion for accommodating the frame 4 (see FIG. 1)
To the instrument body 3 and the drive module
Contacting the lower part of the drive gear 19 in the direction in which the
If the control piece 45 for controlling the removal of the drive motor 2 is the leg 29,
And protrudes toward the drive motor 2 side.
Regulation for removing the drive gear 19 by the dynamic gear 19
And the other parts are the first and second parts.
Since it is almost the same as the embodiment, the same location or equivalent location
Are denoted by the same reference numerals, and detailed description is omitted.

As described in detail above, in this embodiment, the driving
The drive gear 19 of the motor 2 projects outward from the side of the case 17
The protruding drive gear 19 is regulated by the instrument body 3.
Contact the receiving piece 45 in the direction in which the drive motor 2 is removed.
With such a configuration, it is substantially the same as the first and second embodiments.
Similar effects can be obtained.

In the first and third embodiments , the regulating pieces 33 and 45 of the instrument main body 3 are integrally connected to the bobbin 26 by the front.
In the second embodiment , the covering portion 50 of the instrument main body 3 is formed integrally with the bobbin 26. However, these restricting pieces 33 , 45 or the covering portion 50 are formed on the instrument main body 3, and the drive motor 2 is removed. As long as a regulating portion for regulating the pressure can be configured, the setting can be made as appropriate.

[0029]

As described above in detail, according to the present invention, there is provided a counter comprising a plurality of display wheels rotatably held on a support shaft and a support shaft of the counter mechanism. An instrument frame held above the display wheel, a display plate positioned above the display wheel and provided so that the display wheel can be visually recognized from the outside,
An instrument body provided below the base portion of the instrument frame and having a pointer shaft inserted into the display panel side through the instrument frame; and a tip of the pointer of the instrument body. A pointer that is fixed and has an indicator that extends substantially parallel to the display plate, and a drive that is mounted and fixed to a housing portion of the instrument frame located on the lower digit side of the display wheel and drives the display wheel. A drive motor provided with a gear; and a regulating portion formed on at least one of the drive motor and the instrument main body to regulate removal of the drive motor. The drive motor can not be removed by the contact of both sides by the regulating part formed on the main body,
This makes it possible to provide an instrument unit capable of preventing the counter from reversing.

A counter formed by holding a plurality of display wheels on a support shaft so as to be able to shift by a digit, an instrument frame for holding a support shaft of the counter mechanism above a base portion thereof,
A display plate located above the display wheel and provided so that the display wheel can be visually recognized from the outside; and a display plate provided below a base portion of the instrument frame, and through the instrument frame. A meter body having a pointer shaft inserted into the display panel side, a pointer fixed to the tip of the pointer of the meter body, and having an indicator extending substantially parallel to the display plate, and a lower digit of the display wheel A drive motor provided with a drive gear for driving the display wheel, which is mounted and fixed to a housing portion of the instrument frame located on the side of the instrument frame, and an instrument frame of the drive motor formed on the instrument main body. And a cover for covering the fixed portion to the motor and restricting the removal of the drive motor, so that the cover formed on the instrument body covers the fixed portion of the drive motor to the instrument frame for driving. It is impossible to remove the motor, which prevents the counter from reversing. It can provide an instrument unit.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is a sectional view of a main part of FIG.

FIG. 4 is a sectional view of a main part of a second embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a third embodiment of the present invention.

[Explanation of symbols]

 1 Counter mechanism 2 Drive motor 3 Instrument body 4 Frame 5 Display board 6 Pointer 8 Od counter 9 Display wheel 10 Support shaft 13 Base 19 Drive gear 28 Pointer shaft 34 Restrictor 43 Indicator 49 Cover

Continuation of the front page (56) References Japanese Utility Model Sho 58-34054 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06M 1/00-3/14 G01C 22/00 G01P 1 / 00-3/80

Claims (2)

(57) [Claims] 1. A counter comprising a plurality of display wheels rotatably held on a support shaft so as to be capable of shifting by a shift, a frame for holding a support shaft of the counter above a base portion thereof, and the display. A display plate positioned above the wheel so that the display wheel can be visually recognized from the outside; and a display plate disposed below the base of the frame and through the frame to the display plate side. A meter body having a pointer shaft to be inserted, a pointer having an indicating portion fixed to the tip of the pointer shaft of the meter body and extending substantially parallel to the display plate, and located at a lower digit side of the display wheel; A drive motor mounted on and fixed to the frame accommodating portion and provided with a drive gear for driving the display wheel; and a drive motor formed on at least one of the drive motor and the instrument body. An instrument unit having a regulation unit for regulating removal of the instrument. 2. A counter comprising a plurality of display wheels rotatably held on a support shaft in a shiftable manner, a frame for holding a support shaft of the counter above a base portion thereof, and the display device. A display plate positioned above the wheel so that the display wheel can be visually recognized from the outside; and a display plate disposed below the base of the frame and through the frame to the display plate side. A meter body having a pointer shaft to be inserted, a pointer having an indicating portion fixed to the tip of the pointer shaft of the meter body and extending substantially parallel to the display plate, and located at a lower digit side of the display wheel; A drive motor mounted on and fixed to the frame accommodating portion and provided with a drive gear for driving the display wheel, and a fixing portion formed on the instrument main body and fixing the drive motor to the frame. A cover unit for covering and restricting removal of the drive motor.