JPS6120983B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention uses the spring force of a mainspring to rotate a cam, and a step provided on the outer periphery of the cam enables a cam switch driven by this to be turned on and off. This is related to a wind-up time switch.

Conventionally, when the cam switch in a clockwork time switch is turned on or off, a large amount of force is required to lift the driven piece of the cam switch to the high part of the cam, so it is necessary to use a large force in the clock mechanism provided to drive it. The mainspring was overloaded during the above-mentioned lifting, and as a result, the operation of the clock mechanism was slowed down, causing a problem in which time accuracy deteriorated.

Therefore, an object of the present invention is to solve the above-mentioned problems, and when lifting the driven piece of the cam switch which is driven by the unevenness provided on the outer periphery of the cam, the force of the fast-forward mainspring is applied to the cam. By adding an additional force to the clock mechanism, it is possible to prevent excessive stress from being applied to the spring-type clock mechanism and maintain good time accuracy, and when the cam lifts up the driven piece, the cam is rotated rapidly. In particular, it is an object of the present invention to provide a clockwork type time switch whose contacts can be opened or closed quickly.

The drawings showing the embodiments of the present application will be described below. Reference numerals 1 and 2 denote well-known base plates, which are arranged parallel to each other with a spacer 3 in between. 5 is the main plate 1,
The main shaft 6 is rotatably provided with respect to 2, and 6 is a main spring, one end of which is fixed to the main shaft 5 via a connecting pin 7, and the other end is fixed to the main plate 1 via a stopper 8. 10 is the number one wheel, which is connected to the main shaft 5 via a well-known slip mechanism. Reference numeral 11 denotes a speed regulating mechanism connected to the first wheel 10, which is composed of a balance wheel 12, an escape wheel, a gear train, etc., as is well known. Reference numeral 13 indicates a reversing cam connected in the middle of the gear train, and 14 indicates a known reversing switch. Next, 16 is a drive piece fixed to the main shaft 5, and 17
Reference numeral 18 indicates an interlocking wheel that is loosely fitted to the main shaft 5, and 18 is a fan-shaped recess as shown in the figure, within which a drive piece 16 is placed. 19 is a connecting hole,
Reference numeral 20 indicates a boss portion. Next, in the main cam 22, 23 is a drum loosely fitted to the main shaft 5;
Reference numeral 24 denotes a connecting piece protruding from the side surface of the drum 23, and is formed to fit into the connecting hole 19 described above. 25, 25... are cam elements formed integrally with the drum 23 on the outer periphery of the drum 23, and these form a multilayer cam. Reference numeral 26 indicates a base between the cam elements 25, and 27 indicates an interlocking piece formed protruding from the side surface of the drum 23. Next, 28 is the interlocking car 17
The control cam is loosely fitted on the outer circumference side of the boss portion 20, and the outer circumference includes a high step portion 29, or a low step portion 30, which is an example of an unlocking portion, and a stop deeper than the low step portion 30. A portion 31 is formed. Reference numeral 33 denotes an interlocking hole, which is formed in a long hole shape as shown in the figure, and the interlocking piece 27 is placed inside the interlocking hole. The main cam 22, the control cam 28, etc. are made of a hard material with high wear resistance and good sliding properties, such as Diurapon. The same applies to many of the gears mentioned above and below.

Next, the quick feed mechanism 34 will be explained.
Reference numeral 35 denotes a rotating shaft rotatably provided with respect to the base plates 1 and 2, and 36 a fast-forwarding mainspring, the inner peripheral end of which is fixed to the rotating shaft 35 via a connecting pin 37. Reference numeral 38 indicates a barrel fixed to the main plate 1, and the outer circumferential end of the fast-forwarding mainspring 36 is in contact with the inner circumferential surface of the barrel. Note that this barrel 38 functions similarly to those used in automatic watches, that is, the mainspring 3 is rotated by the rotation of the rotating shaft 35.
6 is wound and the torque it possesses exceeds a certain level, the outer peripheral end of the mainspring 36 and the barrel 38 slip, thereby preventing the fast-forward mainspring 36 from being wound excessively. Next, the transmission mechanism 39 between the rotating shaft 35 and the interlocking wheel 17 will be explained. 40 is a main driving wheel fixed to the rotating shaft 35, 41 is an idler wheel arranged between the main driving wheel 40 and the interlocking wheel 17, and one end is normally moved in the direction of arrow 81 by a presser spring 42 fixed to the base plate 2. The main driving wheel 40 and the interlocking wheel 17 are engaged with each other by being pushed by the main driving wheel 40 . Further, this idler wheel 41 is interposed between the base plate 2 and the control cam 28 so as to prevent its movement in the axial direction. The idler wheel 41 is constructed to operate as a one-way clutch, as will be described later. (This structure is also known, for example, in Japanese Utility Model Application Publication No. 50-42177.) Next, 43, 44, and 45 are the rotating shafts 3
A gear train 46 is connected to the tooth train 5, and a locking ring 46 is connected to the tooth train. It is configured such that the fast-forward mainspring 36 can be stopped from returning by simply rotating the locking ring, reducing its rotational torque, and thereby locking the locking ring with a small locking force. Note that a large number of concave and convex portions for locking are formed on the outer periphery of the locking ring 46. This locking ring 46 includes, for example, a gear. In addition, a one-way clutch (not shown) is interposed in the gear train, and when the rotating shaft 35 rotates in the direction to wind up the fast-forward mainspring 36, the rotational force is applied via the gear train. It is configured so that it is not transmitted to the retaining ring 46.

Next, the locking lever 48 will be explained. Reference numeral 49 denotes a driven portion, and its shaft piece 50 is placed in a through hole 51 formed in the base plates 1 and 2, so that it can freely swing in the direction of the arrow shown in FIG. Note that this driven portion 49 is formed by bending a metal plate, for example. Reference numeral 52 denotes a balance balance holder integrally formed with the driven part 49, so as to stop the swinging of the balance 12 when the driven part 49 comes into contact with the stop part 31 of the control cam 28, as shown in FIG. It is configured. Reference numeral 53 denotes a locking portion, which is made of an elastic material, and is fixed to the driven portion 49 with a rivet 54 so that it can swing together therewith. Reference numeral 55 denotes a biasing spring formed integrally with the locking portion 53, and is configured to have its tip engaged with a pin 56 fixed to the base plate 2 to apply a biasing force in the direction of arrow 82 to the driven portion 49. There is.

Next, the switch section 60 will be explained. Reference numeral 61 denotes a support base fixed to the base plate 2, and is made of an arbitrary insulating material. In this, 62 is a support piece;
63 indicates an insertion hole. Reference numeral 64 indicates a cam switch, in which reference numeral 65 is a holding block made of an insulating material, and reference numeral 66 is a fitting hole, which is configured to fit into the support piece 62 with almost no play. 6
Reference numeral 7 indicates an insertion hole, which is formed to have approximately the same inner diameter as the insertion hole 63. Reference numerals 68 and 69 indicate fixed contact plates supported by the holding block 65, and 70 indicates a movable contact plate, which are constructed using a contact plate material having elasticity as is well known.
Contacts 72, 73 are formed between them. Note that 71 indicates a driven piece formed integrally with the movable contact plate 70. Next, reference numeral 75 indicates a positioning piece fixed to the fixed contact plate 68, and is also made of an insulating material. In this figure, 76 is a sliding piece, and 77 is a spacing piece. Next, 78 indicates a fixing piece, and the insertion hole 6
7 and is inserted into the insertion hole 63. Reference numeral 79 indicates a connecting piece that connects the two fixed pieces 78, 78 to each other.

Next, a procedure for assembling the switch section 60 in the above structure will be explained. First, the main shaft 5 is attached to the main plates 1 and 2, and then the main cam 22 and other members are attached to the main shaft 5. Further, a support stand 61 is attached to the base plate 2 described above. On the other hand, apart from this, there is a cam switch 6 in which contact plates 68, 69, and 70 are integrated with the holding block 65.
4 are assembled in a known manner. The above-described cam switch 64 is first fitted into the support piece 62 in the fitting hole 66 to be in the state shown in FIG. 8. Next, this cam switch 64 is rotated about the support piece 62 in the direction of arrow 83, the sliding piece 76 of the positioning piece 75 comes into contact with the base 26 of the main cam 22, and the driven piece 71 follows the cam element 25. be brought into a state of
Next, the fixing piece 78 is inserted into the insertion hole 63 through the insertion hole 67.
Then, the cam switch 64 is fixed.

Cam switch 6 assembled in this way
4, the sliding piece 76 in the positioning piece 75
is in contact with the base portion 26 between the cam elements 25, so that the contact plate 68 is properly positioned with respect to the outer circumference of the cam element 25, and the contact plate 68 in the axial direction of the cam 22 is in contact with the base portion 26. 68 is also properly positioned. Furthermore, the spacing piece 7
7 pushes up the fixed contact plate 69, and the distance between the fixed contact plates 68 and 69 is also kept constant.
Therefore, the movable contact plate 70 that is driven by the cam element 25 via the driven piece 71 can appropriately repeatedly contact and separate from the fixed contact plate 68 or 69.

Next, the operation of the time switch having the above structure will be explained based on FIGS. 9 to 12 of the drawings. First, when the main shaft 5 is manually rotated in the set direction indicated by the arrow 84, the mainspring 6 is wound up and the interlocking wheel 17 is rotated in the same direction via the drive piece 16 as shown in FIG. Ru. As a result, the main cam 22 is rotated to a predetermined position via the interlocking piece 24, and the control cam 28 is also rotated to a predetermined position in the same direction via the interlocking piece 27. At the same time, the main shaft wheel 40 is rotated in the direction of arrow 85 via the idler wheel 41 due to the rotation of the interlocking wheel 17, and the fast-forward mainspring 36 is also wound up via the rotating shaft 35. In this case, as described above, the one-way clutch provided in the tooth train 43, 44, 45 operates, so the locking portion 53
Even if the locking ring 46 is locked by
Rotation 5 is performed without any problem.

Next, when you release your hand from the spindle 5 in this state, the spindle 5
is rotated in a timed rotation direction 86 as shown in FIG. 10 by the return force of the main spring 6. Note that the speed of this rotation is kept constant by the speed regulating mechanism 11, as is well known. As a result, the interlocking wheel 17 is rotated in the same direction via the drive piece 16 fixed to the main shaft 5, and the main cam 22 is further rotated in the same direction via the linking piece 24. Furthermore, the control cam 28 is also rotated in the same direction via the interlocking piece 27. In this case, the idler wheel 41 is rotated in the direction of the arrow 86 by the rotation of the interlocking wheel 17 in the direction of the arrow 86 against the biasing force of the pressing spring 42.
direction, and the idler wheel 41 and the main driving wheel 40 are not engaged and connected. Further, in this state, since the driven portion 49 of the locking lever 48 is in contact with the high step portion 29 of the control cam 28, the locking portion 53 locks the locking ring 46. Therefore, rotation of the rotating shaft 35 is prevented, and the fast-forwarding mainspring 3
6 is prevented from returning unnecessarily.

While the main cam 22 and the control cam 28 are rotating at a constant speed in this way, when the driven part 49 approaches the inclined part 32 of the control cam 28, the driven part 49 moves as shown in the arrow by the urging force of the urging spring 55. Since the control cam 28 is pressed in the 82 direction, the control cam 28 is rotated in advance in the direction of the arrow 86 with respect to the main cam 22 due to the pressing force, and the driven part 49 moves to the lower part as shown in FIG. 30. (This advance rotation is performed without any problem because the main cam 22 and the control cam 28 are interlocked by the interlocking piece 27 and the elongated interlocking hole 33.) The locking state of the locking ring 46 by the portion 53 is released, and the rotating shaft 35 is rotated in the direction of the arrow 88 by the urging force of the fast-forwarding mainspring 36, as shown in FIG. As a result, the main driving wheel 40, the idler wheel 4
1, the interlocking wheel 17 moves toward the main shaft 5 in the direction of arrow 86.
It is rapidly rotated prior to the rotation of . (This advance rotation is carried out without any problem because the drive piece 16 is placed in the fan-shaped recess 18 of the interlocking wheel 17.) Due to such rapid rotation of the interlocking wheel 17, the main cam 22 also moves in the same direction. Rotates rapidly. Therefore, the lower step portion 25a of the cam element 25 in the main cam 22
The driven piece 71, which was facing the
b, and the contact 72 is quickly opened and the contact 73 is quickly closed. Cam switch 64 like this
After the rapid movement of , the driven portion 49 climbs onto the high stage portion 29 of the control cam 28 again. For this reason, the locking ring 46 is locked again by the locking portion 53, and the main cam 22 and the control cam 28 are moved to the main shaft 5 by the urging force of the mainspring 6, as shown in FIG.
The rotation returns to slow constant speed rotation via the drive piece 16. Note that from the state shown in FIG. 10, the driven part 49 falls onto the low step part 30 of the control cam 28 as shown in FIG. 11, and the cam is rapidly rotated as shown in FIG. , again the driven part 49
The time it takes for the cam to rise to the high step 29 of the cam 28, that is, to reach the same state as shown in FIG. . Thereafter, in the same manner, the driven piece 71 of the cam switch 64 is connected to the cam element 2 of the main cam 22.
5, each time the control cam 28 faces the boundary between the low step 25a and the high step 25b (the slope of the climb and the descent), a low step is formed at a position corresponding to the boundary in the control cam 28. Since the driven portion 49 of the portion 30 is depressed, the cams 22 and 28 are rapidly rotated, and the contacts in the cam switch 64 are repeatedly opened or closed quickly.

The rapid movement of the cam switches 64 as described above is similarly performed when a plurality of cam switches 64 are operated (opened, closed, or switched) simultaneously. That is, since the unlocking portion 30 of the control cam 28 is formed to correspond to the above-mentioned boundary portions of all the cam elements, when a plurality of cam switches 64 are to be operated simultaneously, those cam switches Rapid forwarding continues until they are all activated, and the cam switches are all activated almost simultaneously.

In addition, in the case of manually winding the main spring 6 and the fast-forward mainspring 36 as described above, the main spring 5
After manually rotating the main shaft 5 in the setting direction 84, the main shaft 5 is manually returned in the direction of the arrow 86. When the process (which occurs when the user changes his/her mind and returns to the set) is repeated, the rapid traverse mainspring 36 is linked to the main shaft 5 via the idler wheel 41 which acts as a one-way clutch, so the rapid traverse is stopped. The mainspring 36 will be wound up rapidly, but since the outer peripheral end of the mainspring 36 only contacts the inner peripheral surface of the barrel 38 as described above, excessive winding is prevented. As described above, the present invention uses a clock mechanism that includes a main cam 22 attached to the main shaft 5, a main spring 6, and a speed regulating mechanism that adjusts the return speed of the main spring. Since the main cam 22 is rotated at a constant speed, the cam switch 64 has the advantage of being able to be turned on and off according to a program (concavities and convexities) provided in the main cam 22, similar to a normal clockwork time switch. Moreover, even if the cam switch 64 is turned on and off by the unevenness of the cam 22, when the driven piece of the cam switch 64 is lifted from the lower part of the cam to the higher part of the cam, that is, when the clock mechanism When a large load is about to be applied to the main cam 22, the main cam 22 is biased in the return direction by another fast-forwarding spring 36 that is interlocked with the main cam 22. Therefore, the negative effect on the clock mechanism when lifting the driven piece (the negative effect of delaying the operation of the clock mechanism due to overload)
It has the advantage that the main cam 22 can be rotated accurately according to a time limit.

Moreover, with the above structure, the stepped portion of the main cam 22 causes the driven piece of the cam switch 64 to quickly reach the high step portion because the main cam 22 is urged by another rapid-feeding mainspring. This allows the contacts in the cam switch 64 to be opened and closed quickly, which has the effect of reducing damage to the contacts and allowing them to last for a long time.

Moreover, even if the present invention is provided with an extra fast-forwarding mainspring 36, if the fast-forwarding mainspring 36 is to store biasing force, it can be synchronized with it by rotating the main shaft 4 in the set direction for time setting operation. Since the rotating shaft 35 rotates via the transmission mechanism 39 and the biasing force is accumulated in the fast-forward spring 36, the biasing force can be accumulated without requiring any special operation for accumulating the biasing force. It has the above effect.

Furthermore, even if the fast-forwarding mainspring 36 is connected to the main shaft 5 as described above, when setting the time limit, the rotation angle (time limit) due to manual operation of the main shaft 5 is too large, and the main shaft 5 must be manually forced in the counter-setting direction. If the speed is returned to 1, the one-way clutch in the transmission mechanism 39 can cut off the transmission of force from the main shaft 5 to the rotating shaft 35, so the biasing force stored in the fast-forwarding mainspring 36 is wasted. This has the effect of allowing the main shaft 5 to be returned at will without any trouble.

Furthermore, as mentioned above, when the main shaft 5 is manually rotated in the setting direction, the fast-forward mainspring 36 is wound up, and when it is returned, it is not unraveled.In other words, if the operation is repeated many times, the fast-forward mainspring 36 is wound up. Even in cases where there is a possibility that the main shaft 5 may be wound too much and be cut, or the fast-forward mainspring 36 may be wound too tightly, making it impossible to further rotate the main shaft 5 in the setting direction, the present invention is suitable. When the fast-forward mainspring 36 is about to wind too much, the outer circumferential end of the fast-forward mainspring 36 slips against the inner circumferential surface of the barrel 38 to prevent the fast-forward mainspring 36 from winding up excessively. This has the advantage of being able to prevent failures such as breakage of the rapid feed mainspring 36 and inoperability of the main shaft 5.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway side view of a time switch (a part of the switch part and a reversing switch are not shown), and FIG. 2 is a view taken in the direction of the arrow in FIG. 1. 3 is a directional view in the direction of the arrow in FIG. 1, FIG. 4 is a longitudinal sectional view showing the relationship between the main shaft, interlocking wheel, and cam, FIG. 5 is an exploded perspective view, and FIG. 7 is a sectional view taken along the - line in FIG. 3, FIG. 8 is a partial view showing the assembly process, and FIGS.
Figure 2 is a cutaway view of the main parts showing the operating state. 5...Main shaft, 6...Main spring, 22...Main cam, 64...Cam switch, 36...Mainspring for fast forwarding.

Claims (1)

[Claims] 1. A main shaft mounted on the main plate so as to be rotatable in the time rotation direction and the opposite direction, the set direction, a main cam having an uneven circumference and fastened to the main shaft, and a main cam driven by the main shaft. A cam switch that is turned on and off as the main cam rotates, a mainspring that is connected to the main shaft and biases the main shaft in a timed rotation direction, and a return of the main mainspring. The clock mechanism is equipped with a speed regulating mechanism that regulates the speed to a constant speed, and when the main shaft is rotated in the set direction, the main spring is wound up, and when the main shaft is released, the main main spring is wound up. In a clockwork type time switch, the main shaft and the main cam connected thereto are rotated at a constant speed in a timed rotation direction by a biasing force, a barrel is fixed to the main plate, and a barrel for fast forwarding is fixed to the main plate. A rotating shaft is rotatably attached to the main plate, and a fast-forwarding spring is provided in the barrel, and the inner end of the mainspring is fixed to the rotating shaft, while the outer end is attached to the inner end of the barrel. The mainspring is wound against the circumferential surface by the rotation of the rotating shaft, and when the torque it possesses exceeds a certain level, the outer circumferential end of the mainspring is brought into contact with the inner circumferential surface of the barrel so as to slip, and then the above-mentioned rapid feed The rotating shaft and the main cam are connected via a transmission mechanism for transmitting the urging force of the fast-forward mainspring to the main cam in a direction that provides an urging force in the timed rotation direction to the main cam, Moreover, a one-way clutch is interposed in the transmission mechanism, which transmits the rotation of the main cam in the setting direction toward the rotating shaft, but not the rotation in the opposite direction. A control cam having a lock release portion is connected to the cam so as to be rotatable in conjunction with the control cam, and a lock lever is rockably driven by the control cam by the rotation of the control cam, The free end of the locking lever is configured to be able to lock and release the fast-forwarding mainspring from movement in the return direction by swinging itself, and the locking release portion provided on the outer periphery of the control cam is The locking lever is formed at a position where when the driven piece of the cam switch driven by the main cam is lifted up, the locking lever comes into contact and the force of the fast-forwarding mainspring is transmitted to the main cam. A time switch equipped with a cam having concavities and convexities around its periphery for operating electrical contacts.