JPH07146311A - Multi-axial type movement - Google Patents

Abstract

PURPOSE:To provide a multi-axial type movement having a zero-point stopper and hair spring retainer which can be adjusted with high workability. CONSTITUTION:A zero-point stopper for pointer, the peripheral one end of which is protruded outward from a shield case 2, and a hair spring retainer 6, the peripheral one end of which is protruded from the case 2 and which fixes one end of a zero-returning spring 5 of the pointer, are provided at the end section 3a of a cover 3 fitted to the top of the case 2. In addition, a guide section 13 which guides an adjusting rod 7 to the peripheral sections of the retainer 6 and zero-point stopper is provided at the end section of the cover 3 and the peripheral sections of the stopper and retainer 6 are made easily operable so that the zero-point position and indicating position of the pointer can be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-axis movement used for a vehicle instrument or the like.

[0002]

2. Description of the Related Art Conventionally, a multi-axis type movement has been used in various places as a pointer driving source for measuring instruments, because it requires less rotational torque of a motor and can be made thinner. Among the multi-axis movements, for example, a bi-axial type is shown in FIG. As shown in FIG. 4, this biaxial movement 1 has a shield case 2 made of metal and a cover 3 on the upper side thereof.
In the space formed by the shield case 2 and the cover 3,
A bobbin (not shown) is stored. Two sets of coils are wound on the outside of the bobbin so as to intersect each other, and a magnet rotor is arranged inside the bobbin.

The magnet rotor has a rotary shaft 14, one end of which is supported by a bearing portion provided on the bottom of the bobbin and the other end of which is projected from a hole above the bobbin. It is arranged. A disk-shaped magnet having a pair of S and N poles magnetized at its ends is attached to the center of the rotary shaft, and a signal current is passed through the coil wound in the intersecting manner. The magnet and the rotating shaft are integrated and rotate in the direction of the synthetic magnetic field generated by the coil.

As shown in FIG. 4, a cover 3 made of plastic is fitted on the upper side of the case 2, and a hole 3 as shown in FIG.
b is provided, and the pointer shaft 4 is fitted into the hole 3b. The tip of the pointer shaft 4 is projected to the outside of the cover 3 to attach a pointer, and the rear end of the pointer shaft 4 is fitted in a hole of a bobbin housed in the case 2 so as to be rotatable. It is supported.

Further, one end of a balance spring (zero balance spring) 5 for zeroing the pointer is fixed to the center of the pointer shaft 4, and the other end of the balance spring 5 is used for adjusting the indication of the pointer. It is fixed to the mustache holder 6 as an adjusting part. The beard holder 6 is rotatably attached to the upper end 3a of the cover 3, and the gear teeth 6 are attached to the end.
a is formed, and its gear tooth 6a portion is arranged so as to project outward from the end surface of the case 2.

As shown in the figure, the adjustment of the pointing accuracy of the pointer attached to the pointer shaft 4 is given to the pointer shaft 4 by fitting and turning the pinion 7a portion of the adjusting rod 7 to the gear tooth 6a portion. It is performed by changing the rotating torque.

FIG. 5 shows B of the movement 1 shown in FIG.
A sectional view taken along line -B 'is shown. As shown in the figure, a gear 8 is fitted on the pointer shaft 4, and the gear 8
One projection 8a is provided on the upper surface of the. This gear 8
Gear teeth are meshed with teeth of a gear (not shown) attached to the rotary shaft 14 of the rotary unit, and the rotary shaft 14 of the rotary unit rotates so that the pointer shaft 4 also rotates. There is. The diameter of the gear 8 attached to the pointer shaft 4 is larger than that of the gear attached to the rotating shaft 14, and the output torque of the rotating portion is reduced accordingly.

Further, as shown in the figure, a zero point stopper 9 is rotatably attached to the back surface of the end portion 3a of the cover 3 which is the lower side of the beard holder 6 as an adjusting portion for adjusting the indication of the pointer. Gear teeth 9a are also formed at the ends of the zero-point stopper 9, and the gear teeth 9a are arranged so as to project outward from the end surface of the case 2. Further, a projection 9b is provided on the lower surface of the zero-point stopper 9, and the gear 8 rotates when the gear 8 rotates and the projection 8a provided on the upper surface thereof engages with the projection 9b.
Is stopped, and the pointer attached to the pointer shaft 4 indicates the zero point.

The adjustment of the zero point by the zero point stopper 9
As with adjustment of the mustache 6, it is carried out after the movement 1 is installed. Usually, in order to drive the pointer to the pointer shaft 4, a constant current, for example, a current corresponding to a vehicle speed of 40 km / h is applied to the coil, and the pointer shaft 4 is rotated by a certain angle to a position of 40 km / h of the dial. It is done so that the pointer points to the position of h. At this time, if the pointing position is not correct, the gear bar 6a of the beard holder 6 is attached to the adjusting rod 7
The movement of the movement 1 is adjusted by fitting and rotating the pinion 7a portion of FIG.

If the pointer is turned off and the pointer indicates the zero point of the dial, and if it does not return to the zero point, the adjusting rod 7 is inserted from the hole 10a formed in the substrate 10 and the gear tooth 9 is formed.
The adjustment is performed by fitting the pinion 7a portion of the adjusting rod 7 into the portion a and rotating it. Next, again apply the current to the coil to see if the pointer indicates 40 km / h. If the pointer is incorrect, hold the beard again 6
The instruction adjustment of the movement 1 is performed by fitting the pinion 7a portion of the adjusting rod 7 into the gear tooth 6a portion of the above and turning the instruction to adjust the instruction.

[0011]

However, when adjusting the zero point stopper and the mustache, it is a groping condition to engage the pinion portion of the adjusting rod with the gear teeth provided on the peripheral portion of the zero point stopper and the beard. As a result, workability is poor and efficiency is poor.

In order to solve the above problems, it is an object of the present invention to provide a multi-axis movement having good workability when adjusting a zero point stopper or a mustache holder.

[0013]

According to the present invention, rotation is transmitted from a rotary shaft of a rotary portion arranged in a central portion of a case to a pointer shaft provided in the vicinity of an end portion of the case via a gear, and the pointer is provided. While driving the pointer attached to the shaft, the cover mounted on the case is provided with an adjusting portion with one end of the peripheral portion protruding to the outside of the case for adjusting the indication of the pointer, and the peripheral portion of the adjusting portion is provided. In a multi-axis movement in which the pointer is adjusted by operating the adjusting rod, a guide portion for guiding the adjusting rod to the peripheral portion of the adjusting portion is provided at one end of the cover. I am trying.

[0014]

With the construction as described above, in the assembling work of the measuring instrument, the movement is first attached to the substrate, the dial is attached to the upper surface of the movement, and the pointer is driven into the pointer shaft of the movement by a predetermined method. At that time, if it becomes necessary to adjust the pointing position of the pointer,
Insert the adjusting rod into each guide on the cover. Then, the tip of the adjusting rod is guided by the guide portion and easily guided to the peripheral portion of the adjusting portion. If the adjusting rod is operated in that state, the pointing position of the pointer can be easily adjusted and workability is improved.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same or corresponding parts as those described in the section of the related art are designated by the same reference numerals. FIG. 1 shows a perspective view of a multi-axis movement 11 which is a first embodiment of the present invention. As shown in the figure, the multi-axis movement 11 according to this embodiment is different from the conventional multi-axis movement 1 shown in FIG. 4 in that the pinion 7a portion of the adjusting rod 7 is attached to the end of the cover 3. This is that a guide portion 13 for guiding to the gear tooth 6a portion of the holding 6 and the gear tooth 9a portion of the zero point stopper 9 is provided.

The shape of the guide portion 13 is an inlet 13a having a trumpet-shaped opening on the lower side, followed by the cylindrical portion 1
3b is formed, and an opening 13c is provided at the upper end of the cylindrical portion 13b. The inner diameter of the cylindrical portion 13b, that is, the diameter of the opening 13c is formed so that the adjusting rod 7 can pass therethrough, and the position of the opening 13c is the position of the pinion 7a of the adjusting rod 7 when the adjusting rod 7 is passed through. However, it is located at a position where it meshes with the gear tooth 6a portion of the mustache 6 and the gear tooth 9a portion of the zero point stopper 9.

FIG. 2 is a sectional view taken along the line AA ′ of the multi-axis movement 11 shown in FIG. 1. When the adjusting rod 7 is inserted through the hole 10a of the substrate 10, the guide portion 13 is formed.
It is adapted to be naturally guided to the gear tooth 6a portion of the beard 6 and the gear tooth 9a portion of the zero point stopper 9 via the trumpet-shaped inlet 13a. In this way, when adjusting the zero point position or the pointing position of the pointer, simply inserting the adjusting rod 7 through the hole 10a of the substrate 10 ensures that the pinion 7a portion of the adjusting rod 7 has the gear teeth 6a of the bearer 6. Since it can be meshed with the portion and the gear tooth 9a portion of the zero point stopper 9, workability is improved. Also, for example, the hole 1 of the substrate 10
Even if the position of 0a is slightly displaced, the entrance 13 of the guide portion 13
Since a has a trumpet shape, this deviation can be absorbed. Further, in the conventional case, the situation in which the adjusting rod 7 is forcibly engaged with the gear teeth 6a of the beard 6 and the like and the parts are damaged is avoided by using this embodiment. be able to.

Next, a second embodiment of the present invention will be described. The second embodiment, as shown in the sectional view of FIG.
The first embodiment differs from the first embodiment in the shape of the guide portion. That is, as shown in the drawing, the guide portion 23 is formed by a semi-cylindrical portion 23b in which a half of the cylinder toward the gear tooth 6a portion of the beard 6 or the gear tooth 9a portion of the zero point stopper 9 is cut out. And the guide of the adjusting rod 7 is on the outside of this semi-cylindrical part 2
Only 3b is used. Even in this case, if the hole 10a of the substrate 10 is formed almost accurately, the adjusting rod 7 can be accurately guided, the material can be saved, and the die cutting can be simplified.

[0019]

As described above, according to the present invention, the guide portion for guiding the adjusting rod is provided at one end of the cover of the movement and the adjusting portion for performing the instruction adjustment of the pointer. Adjustment is easy and workability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ of the multi-axis movement shown in FIG.

FIG. 3 is a sectional view of a second embodiment of the present invention.

FIG. 4 is a perspective view of a conventional multi-axis movement.

5 is a cross-sectional view of the multi-axis movement shown in FIG. 4, taken along the line BB '.

[Explanation of symbols]

 1,11 Multi-axis movement 2 Shield case 3 Cover 4 Pointer shaft 5 Balancing spring (Returning spring) 6 Balancing bar 7 Adjustment rod 8 Gear 8a Protrusion 9 Zero point stop 9b Protrusion 10 Board 13 Guide part 14 Rotating shaft

Claims (1)

[Claims] 1. Rotation is transmitted from a rotating shaft of a rotating portion arranged in the center of the case to a pointer shaft provided near the end of the case via a gear, and a pointer attached to the pointer shaft is driven. In addition, the cover mounted on the case is provided with an adjusting part with one end of the peripheral edge protruding outside the case for adjusting the pointer indication, and the peripheral edge of the adjusting part is operated by an adjusting rod. In the multi-axis movement, the guide is provided at one end of the cover for guiding the adjustment rod to the peripheral edge of the adjustment section.