JPS6213035Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a composite display wristwatch having a pointer type display (analog display) means and an electro-optical display (digital display) means.

Display correction of conventional combined display wristwatches was performed by reusing the analog display and by combining a plurality of button operations for the digital display. Products that adopted this modification method had operating instructions or button functions written clearly on a parting board or other easily visible part. This was done because the operation method was complicated and difficult to understand. In addition, in order to improve operability, a large number of buttons are required, which poses problems in terms of cost and waterproofness of the exterior, and concerns remain regarding operability. In addition, the increase in the number of various switches complicates the structure, increases costs due to the increased number of parts, and makes installation difficult.

The purpose of the present invention is to eliminate these drawbacks, simplify input operations from external operating members, and provide a composite display electronic wristwatch that is easy to assemble and manufacture. do.

1 and 2 are plan and sectional views showing an embodiment of the present invention in a normal carrying state. FIG. 3 is a plan view showing a digital display correction state in which the winding stem is pulled out one step from the normal carrying state. FIG. 4 is a plan view showing an analog display correction (hereinafter referred to as needle alignment) state in which the winding stem is pulled out one step further from the state shown in FIG.
FIG. 5 is a plan view showing an arbitrary operating state in FIG. 3.

In Figures 1 and 2, 3 is the pusher, 4 is the bolt, and 5 is the bolt presser, and by pushing and pulling the winding stem 2, the watch is normally carried, the digital display is corrected,
This is a switching member for setting the hands in three states, and the function and operation are similar to the switching mechanism of a conventional date/day analog wristwatch, so a description thereof will be omitted. Reference numeral 6 is a small iron wheel, which is rotatably supported on a pull-out pin of the main plate 1, and a bolt presser foot 5.
is held down by 7 is a wheel with a square hole, an engagement groove with the bolt 4, a flat engagement groove that is sandwiched between the upper teeth 7a on the inside of the watch, and two pawls 7 on the outside.
It has a pawl portion having a shape b, and is loosely fitted into the corner portion of the winding stem 2.

Reference numeral 8 denotes a switch cam (the potential is the same positive potential as that of the base plate 1) which is supported on the extraction pin 1a of the main plate, and is mechanically welded, pin-crimped, etc. with a switch spring 9 having an elastic part 9b that constantly presses the circuit board 12.
and are electrically integrated, and are held down by a bolt presser foot 5. Reference numeral 10 denotes a spring portion 10 that constantly holds down the oshidori 3 and the changeover switch spring 20.
b, and a spring 10a for positioning the switch cam 8. The jump control spring 10a has a contact portion with the switch cam formed by one circular arc. 11 is each presser foot 1
0 and the bolt presser foot 5 are screwed to the base plate 1. 12 is a circuit board with electrode patterns (hereinafter referred to as patterns) 12a, 12b,
12c, 12d, one end of each is MOS-
Connected to IC13. 14 is a liquid crystal panel arranged at an arbitrary angle with respect to the plane of the base plate 1;
Reference numeral 5 indicates a battery, and hour, minute, and second hands 17, 18, and 19 are supported by the hour wheel, second wheel, and fourth wheel. Reference numeral 16 denotes a regulating lever, which has a deformed hole so as to be actuated by a pin in which a mandarin lock 4 is implanted when moving from the digital display to the hand alignment state, and is rotated by the rotor in the normal hand movement state by the tip of the elastic part. The fifth wheel & pinion 21 forming part of the wheel train to which power is transmitted is regulated. The changeover switch spring 20 has its plane position regulated by the dowel 3a of the oshidori 3 and the oshidori shaft 22,
This is because they are pressed together by the pressure foot 10.
Its operation follows Oshidori 3. It also has two spring parts that press the circuit board 12 at all times. The tip of this spring part that is in contact with the circuit board 12 is moved from the plane position of the edge 1b of the main plate, which is the fulcrum when the winding stem is removed (normally, this operation is only possible when carried), to the tail of the oshidori 3 (the winding stem), which is the point of force. It is formed on the side opposite to the engaging portion of the lock 2 and the lock 3. Therefore, by removing the winding stem, the changeover switch spring 20 becomes weak, and patterns 12c,
It is impossible for there to be a connection failure with d. This switch constituted by the changeover switch spring 20 (potential is the same positive potential as the main plate 1) and the patterns 12c and 12d is used to detect the state of normal cell phone use, digital display correction, and hand alignment. In addition, the spring portion of the switch spring 20 presses the circuit board 12 with its tip, and is made of a thin elastic member, and the spring width is wider than the plate thickness (width/plate thickness ≧ 3), and the inertia of the spring portion is small. The spring properties vibrate due to external disturbances such as shocks while carrying,
It will not touch the patterns 12c and 12d and cause the switch to malfunction.

In this state, the wheel 7 is moved counterclockwise by the lock spring (the direction in which the winding stem 2 is pulled out in the figure).
The bar 4 and the slope 2a of the winding stem are about to rotate.
Positioned by. Further, the stop wheel 7 is not engaged with either the switch cam 8 or the small iron wheel 6. The tip end 9a of the switch spring 9 that presses the circuit board 12 is positioned by the spring 10a at a neutral position where it does not come into contact with the patterns 12a, b. Therefore, even if the winding stem 2 is rotated in this state, the analog/digital display will not change.

Changeover switch spring 20 and patterns 12c, d
are not in contact. Each of the members described above, except for the winding stem 2 and the stopper wheel 7, are arranged on the front surface side of the main plate 1, that is, on the front surface of the main plate 1, or in the space formed by the circuit board 12 and the main plate surface plane. It has been done.

In FIG. 3, the clutch wheel 7 is actuated by the switching member and is engaged with the switch cam 8. When the winding stem 2 is rotated in the direction of the arrow A in this state, the switch cam 8 is moved by the claw 7b of the wheel.
The switch spring 9 operates in the direction of pattern 12.
a and operates to the position indicated by the chain double-dashed line in the figure.

When the winding stem 2 is further rotated, the engagement between the pawl 7b and the protrusion 8a of the switch cam is disengaged, and the spring control spring 10a is released.
As a result, the switch cam 8 returns to the neutral state.

Further, if the winding stem 2 is continued to be turned in the same direction, the above-mentioned operation will be repeated. Therefore, when the pattern 12a comes into contact with the tip 9a of the switch spring, the switch is turned on and the digital display is lowered. The direction of rotation of the winding stem 2 is matched to the direction in which the hand lags when the hands are aligned. Also, when the winding stem 2 is rotated in the opposite direction to the arrow A, the tip 9a of the switch spring
is switched on because it comes into contact with pattern 12b in the same way as the above-mentioned operation (however, the direction of operation is opposite);
Move up the digital display. This winding stem direction corresponds to the direction in which the hands move when the needles are aligned.

In FIG. 5, the operations of the switch cam 8, the switch spring 9, and the spring control spring 10a are repeated as the winding stem 2 continues to rotate in the states indicated by the solid line, one-dot chain line, two-dot chain line, and the solid line. At this time, if we pay attention to the relationship between the operating position of the switch cam 8 and the contact point between the spring 10a and the switch cam 8, we can see that the position of the contact point moves depending on the rotational position of the switch cam 8. This has the effect of reducing wear on the switch cam 8 and the spring 10a. Also, if we pay attention to the shape of the switch cam 8, the above-mentioned contact point is 1
(The distance l between the center of the circle and the center of the axis 1a of the switch cam 8, and the distance L from the center of the axis to the tip of the switch spring, that is, the contact point between the switch spring 9 and the circuit board 12, are expressed by the relationship l≧1/3L. ) is set to move in an arc shape. This reduces the amount of change in the moment by which the spring 10a attempts to return the switch cam 8 even if the amount of rotation of the switch cam 8 changes due to variations in related parts.
This is intended to stabilize operation. The above-mentioned details also apply to operations in the opposite direction.

The position of the changeover switch spring 20 in this digital display state is in contact with the pattern 12c but not in contact with the pattern 12d. That is, one switch is closed and the other switch is open.

In FIG. 4, the switching member
is in operation, and the upper teeth 7a and the small iron wheel 6 are engaged.

When the winding stem 2 is rotated, the winding wheel 7 and the small iron wheel 6
In the same way as the hands of a conventional pointer-type display wristwatch, the hands are set using the reverse wheel train. When the winding stem 2 is rotated in the direction of arrow A, the pointer is corrected counterclockwise (lag direction). Further, when the winding stem 2 is turned in the direction opposite to arrow A, the pointer is adjusted clockwise. This is consistent with the digital display correction direction. When the needles are aligned, the handwheel 7 and the switch cam 8
is not engaged and is positioned at the neutral position by the spring 10a, so even if the winding stem 2 is rotated, the digital display will not be corrected. Further, since the switch spring 20 is in contact with the patterns 12c and 12d, the two switches are closed. The switch of pattern 12d also serves as an analog reset switch. Since the switch spring 9 is a thin elastic member, the spring width is wider than the plate thickness (width/plate thickness≧3), and it is highly durable (it is used particularly frequently because it is used for digital display correction). ) Further, the regulating lever 16 regulates the fifth wheel & pinion 21.

In this embodiment, the switch spring 9 and the cam 8 are separated, but they can be considered as a single switch member. Furthermore, the wheel 7 may be collectively referred to as a correction member.

As described above, according to the present invention, in the composite display electronic wristwatch, the correction switch of the electro-optical display means is arranged between the correction wheel provided coaxially with the winding stem and the main plate and the circuit board, and the rotating shaft is connected to the winding stem. It is formed of a switch member provided on the shaft, a jump spring that keeps the switch member in a neutral position, and a correction wheel train arranged on the opposite side of the correction wheel from the switch member, and the correction wheel and the switch member are engaged. When the winding stem is continued in one direction at the axial position of the winding stem to be matched, the switch member rotates until the claw of the correction wheel and the switch member disengage, and after the engagement disengages, the jump control lever Therefore, the switch member is arranged to return to the neutral position, and at this time, the elastic part formed integrally with the switch member moves over the surface of the circuit board and comes into contact with the electrodes on the circuit board, thereby correcting the correction switch of the electro-optical display stage. A switch spring is provided which rotates in conjunction with the movement of the winding stem in the axial direction. A first elastic arm that makes contact and a second elastic arm that comes into contact with the reset pattern when the winding stem is at the needle alignment position are formed from one plate material, and the first and second arms are connected to the circuit board. Since the structure is such that it slides on the surface of the circuit board with elastic force in the thickness direction, it brings about the following effects.

a. A correction wheel is provided coaxially with the winding stem, a switch member forming a correction switch for the electro-optical display is placed between the machine frame and the circuit board, and the rotation axis of the switch member is orthogonal to the winding stem axis. Since the switch member is rotated by the claw portion of the correction member and the protrusion of the switch member, there is no need to increase the diameter of the correction member, and the structure is simplified because the correction member and the switch member are directly engaged. This allows the structure around the switching mechanism to be made thinner and in a smaller space.

b The switching member is rotated by its protruding part and the claw part of the correction member, and when disengaged, it is returned to the neutral position by the jump control lever, so it can be operated in a limited space. Therefore, it is advantageous for miniaturization, and continuous switching operation can be performed by rotating the winding stem in one direction, which provides excellent operability.

c Since the switch member, correction member (wheel drive wheel), and correction gear train are arranged without overlapping in a plane, the structure can be made thinner, and as mentioned in a and b, the switch mechanism can be formed in a small space in a plane. Therefore, it was possible to provide a thin and small switching mechanism. In addition, since the elastic part 9b of the switch member is pressed in the vertical direction of the circuit board and slides, it has the advantage that there is no chittering or incorrect input even if there is an external impact, and the gap between the electrode and the elastic part 9b is Miniaturization can be achieved by reducing the distance. In addition, since the rotation axis of the switch member is located on the winding stem axis, the elastic part moves equally when the correction member rotates in both directions, making the design easier and providing a switch mechanism that is easy to use. can.

d. Since the winding stem has an electronic display correction position and a needle alignment position (reset position) in the axial direction, a detection switch that electrically detects the two winding stem positions is required. In the present invention, a changeover switch spring consisting of a single elastic plate that rotates in conjunction with the winding stem has a first switch spring that contacts the electronic display correction pattern on the circuit board at the electronic display correction position of the winding stem.
Since the arm part and the second arm part, which contacts the reset pattern at the needle alignment position of the winding stem, are formed into one piece from a thin metal plate, the positional relationship between the two switches can be adjusted only by adjusting the pattern on the circuit board. This has the advantage of reducing the number of parts and significantly facilitating assembly and manufacturing.

[Brief explanation of the drawing]

1 to 5 are a plan view and a sectional view showing an embodiment of the present invention. 1... main plate, 2... winding stem, 6... small iron car, 7...
...Trolling wheel, 7a... Instep teeth, 7b... Claw, 8...
Switch cam, 9...Switch spring, 10...Oshidori presser foot, 10a...Jump spring, 12...Circuit board, 14...Liquid crystal panel, 17...Hour hand, 18
...Minute hand, 19...Second hand, 20...Switch spring, 3...Oshidori, 4...Kanuki, 5...
Bolt presser foot, 16...Regulation lever, 21...Fifth wheel.

Claims (1)

[Scope of utility model registration request] In a correction mechanism for a composite display timepiece having a pointer-type display means and an electric display means, a winding stem 2 serving as a display correction input, a correction wheel 7 disposed loosely fitted to the winding stem 2, and a correction wheel 7 of the pointer-type display means are provided. A correction wheel train 6, correction members 8 and 9 for electrically correcting the electrical display means, and a switching mechanism that works in conjunction with the winding stem and positions the correction wheel in multiple stages at least at a needle alignment position and an electrical display correction position. 3, 5, and a changeover switch spring 20 that rotates in conjunction with the switching mechanism and electrically detects the electrical display correction position of the winding stem and the needle alignment position, and the correction wheel 7 has the adjustment A tooth portion 7a that engages with the correction wheel train at the position and a claw portion 7b that engages with the correction members 8 and 9 at the electrical display correction position are provided, and the correction members 8 and 9 are provided with the correction wheels. Engagement part 8a with claw part 7b
, an elastic contact portion 9a that is pressed against the surface of the circuit board on which the correction input patterns 12a and 12b are provided with a force in the thickness direction of the circuit board, and a cam that further engages with the neutral position regulating elastic member 10. The correction members 8, 9 and the correction wheel train 6 are arranged on opposite sides of the correction wheel 7, and at least a part of the correction members 8, 9 is formed from the correction wheel train 6. The neutral position regulating elastic member 10 and the correction member 8 are disposed opposite to each other directly above the winding.
When the cam portion 8b of 9 is in the neutral position, the elastic contact portion is connected to the correction input patterns 12a, 12b.
When the correction members 8 and 9 swing in accordance with the rotation of the winding stem 12, the elastic contact portion 9a and the correction input patterns 12a and 12b are maintained in a non-contact position.
The changeover switch spring 20 has a fixed part 20a connected to the mandrel 3 which is connected to the winding stem 2 and rotates as the winding stem moves in the axial direction, and a fixed part 20a that is connected to the winding stem 2 and rotates as the winding stem moves in the axial direction. pattern 1
A first arm portion 20b and a second arm portion 20c are pressed against the surface of the circuit board 12 on which the reset pattern 12d and the reset pattern 12d are provided, with a force in the thickness direction of the circuit board.
is formed of one elastic plate, and the changeover switch spring 20 rotates in conjunction with the movement of the winding stem in the axial direction, so that the first arm portion 21d is in the electrical display correction position of the winding stem 2. The second arm portion 20b contacts the electrical display correction position detection pattern 12c, the second arm portion 20b contacts the reset pattern 12d at the needle alignment position of the winding stem, and the first arm portion 20b contacts the reset pattern 12d at the needle alignment position of the winding stem. 21d and the second arm 21b are held in non-contact positions with respect to the electrical display correction position detection pattern 12c and the reset pattern 12d, respectively.