JPH03252013A - Adjustable rotation type encoder - Google Patents

Abstract

PURPOSE:To keep a timing of a pulse signal and adjustment degree constant by providing a spring contact portion and a brush contact portion on the same line passing a rotational center of an operating shaft of a brush table in a unit as a contact plate having a circular comb-like contact for a pulse signal and a adjusting groove. CONSTITUTION:A pulse signal generator of a rotary encoder with an adjustment function and a adjusting groove 12a provided every single pulse in a rotating operation are integrally constituted as a contact plate 12 in an operating shaft 11. A spring contact 16a and a pair of brush contacts for a pulse signal are positioned on substantially the same line passing the rotational center of the operating shaft of a brush table 17. Even if the rotational center of the operating shaft of the brush table 17 is deviated from the rotational center of the operating shaft 11, a circular comb-like contact is brought into contact with the brush contacts at the same angle in the same positional relationship. Therefore, it is possible to improve variation in timing of adjustment and a pulse signal.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a moderating encoder used as a data input device for timer setting of electronic equipment such as video tape recorders and microwave ovens.

2. Description of the Related Art The prior art will be explained using moderation encoders shown in FIGS. 6 to 8.

FIG. 6 is a side sectional view of the moderating encoder, FIG. 6 is a plan view of the main part of the circuit board, and FIG. 7 is an explanatory diagram illustrating the output signals generated.

According to the figure, the moderating encoder is formed by printing or etching a metallic slider 3 having spring properties on a rotary insulating plate 2 attached to an operating shaft 1, or by printing or etching it onto an insulating substrate. A signal generating section that generates a pulse signal by sliding on a substrate 4 having circular comb-shaped contacts 8 and 9 integrally formed with an insulating molding material, and a substrate having one circular comb-shaped liquid point 8 and 9. The click spring 5 is composed of a moderation plate 7 having a radial groove 71 connected to a cover 6 attached to the cover 4, and a click spring 5 having a spring property that is compressed by the operation motion 1 and rotates together with the operation shaft 1.

Then, as shown in FIG. 6, the angles of each convex portion 8a on the outer ring and each convex portion 9a on the inner ring of the double printed comb-shaped contact 8.9 are shifted in a certain direction from the center of the circular contact. A detection circuit (not shown) for detecting an output signal as shown in FIG. 7 determines whether the count is up or down.

In addition, when the operating shaft 1 is not operated, the contact portion Sa of the click spring 6 is in a state of fitting into the groove portion 7a of the moderation plate 7, but in this state, the metal slider 3 and the contact portion 8 , 9 is in contact, circuit 1 or 2 turns on, malfunctions and counts up or down, so circuit 1.21-i turns off.
There are 7.

or,? , -·T are terminals, and the terminals T, , T3 are electrically connected to the comb-shaped contacts 9.13, respectively, and the terminal T2 is electrically connected to the annular current collector 1o. Here, as shown by hatching in FIG. 6, an insulating coating portion 111L is provided at the connection portion between the current collector 1 (the terminal T2) and the connection portion between the circular contact 9 and the terminal T and the apricot.

11b is provided.

Problems to be Solved by the Invention In the conventional moderating encoder described above, the moderating plate 7 having the moderating groove 7a and the circular comb-shaped contacts 8.9 for pulses are placed on the substrate 4 in the same positional relationship. A rotary insulating plate 2, which is set so that the and moderation spring contact Sa are in the same positional relationship, is sliding due to the rotation of the operating shaft 1, but if the centers of these two plates are eccentric, then Initially, even if the brush contact portion and the circular comb-shaped contacts are in parallel contact, when the rotary insulating plate 2 is rotated, for example, about 90 degrees, the brush contact portion and the circular comb-shaped contacts 8 and 9 are in contact with each other at an angle α. As described above, each time the rotation angle of the rotary insulating plate 2 changes, the angle formed between the contact portion of the brush 3 and the circular comb-shaped contacts 8 and 9 changes, and the positional relationship also changes. It is important to eliminate variations in the signal and moderation when the operation shaft rotates, and to ensure that the connection between the terminals 13b and 14b is electrical when the moderation spring contact 5a is fitted into the groove 7a for the node 5, that is, when the operation shaft is stable. The present invention has a problem in that it is not possible to guarantee an insulated state in a rotary moderating encoder. The generation part and the moderation groove provided for each single pulse during rotation operation are used as contact plates on the operating shaft, and the positions of the moderation spring contacts and the pair of brush contacts on the pulse signal layer are The operating axes of all related brush holders are placed almost on the same line, facing each other during rotation.

Function As configured as above, even if m−+r occurs between the center of rotation of the operating shaft of the brush stand and the rotating center of the operating shaft, the two-circular comb-shaped contact point and the brush=f cedar point are 1Ilij. - The positional relationship is such that they touch each other at the same angular displacement, and variations in moderation and timing of pulse ffj can be improved.

Example A one-shot embodiment of the present invention will be explained with reference to FIGS. 1-4.

No.' f, :hi +1 Honkai Akira S'') shi1\, Q', f
i is a side sectional view of the J.Korg, FIG. 2 is a plan view of the brush stand, which is the main part, FIG. 3 is a perspective view of the operating shaft and contact plate, which are the main parts, and FIG. The figure is a diagram illustrating the positional relationship between the brush contact, the moderation spring contact, and the circular comb-shaped contact.

According to the figure, the operating shaft 11 [insert-molded contact plate 12 has a moderation groove 121L, circular comb-shaped contacts 12b and 12c for pulse signals, and a circular contact 12d formed in a circumferential shape are integrally constructed. There is. Here, a circular comb-shaped contact 12b for pulse signals is provided.

The 100 circumferential direction is on the surface, and unevenness is provided in the circumferential direction of the moderation groove 12a.

41111 is held by a bearing 2° mirrored in the cover 19, and brush brushes 3, 14, and 15 are attached to the brush stand 17 by insert molding). In addition, a moderation spring 1e is attached between the cover 19J and the brush stand 11''.1, brush contacts 13L14 rL, 151L, and brush contacts 13L14 rL, 151L, and Opposed C
= Terminal portions 13b1+b and 16b are provided at the ends. At this time, the brush contacts 13a, 141L, and 15a are on substantially the same straight line passing through the center of rotation of the shaft as the moderating spring contact 16a.

Next, to explain the operation in detail, the rotation of the operating shaft 11 causes the pulse signal circular comb-shaped contact 12b to move to the brush contact 1.
3a above, 12c on 142L, circular contact 12d on 1
5a while maintaining electrical continuity.

The brush contacts 131L and 14& are set to be electrically insulated when the moderation spring contact 161L is fitted into the depression of the moderation groove 12a.

The circular comb-shaped contacts 12b and 12C for pulse signals are connected to circuit 1 (terminals 13b to 1
5b) and circuit 2 (between terminals 14b and 15b), the pulse signals are set to be out of phase with each other.

As mentioned above, the moderation spring contact 161L and the brush contact 13a
, 14a, and 15a are arranged on almost the same line XC passing through the center of rotation of the operating shaft of the brush stand 17, and above it are integrated circular comb-shaped contacts 12b and 12C for 5-pulse signals and groove portion 121L for moderation as a contact plate. By constructing the brush contact portions 13 & , 14 a , 16 ! even if the contact plate is rotated 90 degrees, even if the contact plate is rotated 90 degrees, even if both of them are eccentric as shown in FIG. Since L, the circular comb-shaped contact 12b120, and the moderation spring contact 16a are in a parallel state, their positional relationship remains unchanged, and the timing of the signal and moderation can always be constant.

Effects of the Invention As described above, the moderation spring contact portion and the brush contact portion are provided on almost the same straight line passing through the rotation center of the operating shaft of the brush stand, and the contact plate has the circular comb-shaped contacts for pulse signals and the moderation groove portion. Since it is provided as an integral member, the timing of the pulse signal and moderation can always be kept constant even if the positional relationship between the brush stand and the contact plate is eccentric, and since the moderation groove is provided on the contact plate, the number of parts can be reduced. It is also possible to reduce the

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the moderating encoder of the present invention. Fig. 2 is a plan view of the brush stand, which is the main part, Fig. 3 is a perspective view of the operating shaft and contact plate, which are the main parts, and Fig. 4 is a side sectional view.
FIG. 6 is a plan view of the main part of the board. FIG. 7 is an explanatory diagram illustrating generated output signals. 11...Operation axis, 12.Old...Contact plate, 12&...
...Moderation groove, 13...-Brush, 1Sa.
...-- Spring contact for moderation, 17... Brush stand.

Claims (3)

[Claims] (1) An operating shaft and a contact plate provided on the opposite side of the operating shaft from the operating side and formed of a circular comb-shaped contact for pulse signals, a moderation groove, and a circular contact formed on the circumference. ,
The brush stand includes a pair of brush contact portions in which the circular contacts and the circular comb-shaped contacts for pulse signals come into sliding contact with each other when the operating shaft rotates, and a moderation spring contact that slides into the moderation groove portion; An encoder with moderation in which the brush contact and the moderation spring contact are arranged on substantially the same straight line passing through the rotation center of the operating shaft of the brush stand. (2) The moderation encoder according to claim 1, wherein the moderation groove is formed as a part of the operating shaft by molding. (3) The moderating encoder according to claim 1, wherein the circular comb-shaped contact for pulse signals and the circular contact are formed on the operation shaft by insert molding.