JPS6120982B2 - - 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, if the driven piece of the cam switch is lifted up to the high part of the cam, the clock mechanism provided to drive it, especially its mainspring, may be overloaded. This caused problems such as slow operation of the clock mechanism and deterioration of time accuracy.

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. This prevents excessive stress from being applied to the spring-type clock mechanism and maintains good time accuracy.Moreover, at the moment when the cam lifts up the driven piece, the cam rotates rapidly. It is an object of the present invention to provide a clockwork type time switch in which the contacts can be opened or closed quickly by adjusting the speed.

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. 26 is a cam element 25
The base portion 27 between each other indicates an interlocking piece protruding from the side surface of the drum 23. Next, 28 is interlocking car 1
7 shows a control cam loosely fitted on the outer periphery side of the boss portion 20, and on the outer periphery there is a high step portion 29 or a low step portion 30 exemplified as an unlocking portion, and a control cam that is deeper than the low step portion 30. A stop 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. In addition, the main cam 22 and the control cam 28
These 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 disposed between the main driving wheel 40 and the interlocking wheel 17, and one end is normally fixed to the base plate 2 by a presser spring 42, which prevents the mark 81 from being removed. The main driving wheel 40 and the interlocking wheel 17 are engaged with each other by being pushed in the direction shown in FIG. 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 holder integrally formed with the driven part 49, which stops 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 composed of 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 mounted on the main plates 1 and 2, and then the main cam 22 and other members are mounted on 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-mentioned cam switch 64 is first put into the state shown in FIG. 8 by fitting the fitting hole 66 into the support piece 62. 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 linking piece 24, and the control cam 28 is also rotated to a predetermined position in the same direction via the linking piece 27. At the same time, the rotation of the interlocking wheel 17 causes the main driving wheel 40 to rotate in the direction of arrow 85 via the idler wheel 41, 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 a slow constant speed via the drive piece 16. Note that from the state shown in Figure 10,
As shown in FIG. 11, the driven portion 49 falls onto the low step portion 30 of the control cam 28, the cam is rapidly rotated as shown in FIG. The time required for the cam to rise to the position 29, that is, to return to the same state as shown in FIG. 10, is almost instantaneous because the rapid movement of the cam by the rapid movement mainspring 36 is carried out extremely rapidly. Thereafter, in the same manner, each time the driven piece 71 of the cam switch 64 comes to face the boundary between the low step part 25a and the high step part 25b of the cam element 25 of the main cam 22 (the slope of the climb and the descent). Since the driven portion 49 of the low step portion 30 formed at a position corresponding to the boundary portion of the control cam 28 falls down, the cams 22 and 28 are rapidly rotated, and the contact point of the cam switch 64 is opened quickly or Rapid closing is repeated.

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 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 occurs. The mainspring 36 is wound up more and more, but because 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 has a main cam attached to the main shaft, and the main shaft is rotated at a constant speed by a clock mechanism consisting of a main spring and a speed regulating mechanism that adjusts the return speed of the main spring. Since the cam switch is designed to move, the cam switch has the advantage of being able to be turned on and off according to the program (concave and convex) provided in the main cam, similar to a normal clockwork time switch. Moreover, even if the cam switch is turned on and off by the unevenness of the cam, when the driven piece of the cam switch is lifted from the lower part of the cam to the higher part of the cam, that is, when the driven piece of the cam switch is lifted from the lower part of the cam to the higher part, i.e. When a large load is to be applied, the cam is biased in the return direction by another fast-forwarding spring that works in conjunction with this spring, so when the driven piece is lifted up by the stepped portion of the main cam, The main cam has the advantage of being able to eliminate the negative influence of the clock mechanism on the clock mechanism (adverse effect of delaying the operation of the clock mechanism due to overload) and accurately rotate the main cam in accordance with the time limit. Furthermore, with the above configuration, the driven piece of the cam switch is rapidly lifted to the high step by the stepped portion of the cam because the main cam is urged by another rapid-travel mainspring. This makes it possible to quickly open and close the contacts in the switch, which also has the effect of reducing damage to the contacts and allowing them to last for a long time.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially broken 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 rapid feed, 28...Control cam, 48...Latching lever.

Claims (1)

[Claims] 1. A main cam which has an uneven circumference and is fixed to the main shaft, a cam switch which is driven by the main cam so as to operate in accordance with the rotation of the main cam, and a cam switch which is connected to the main shaft. and a speed regulating mechanism configured to regulate the return speed of the main spring to a constant speed. When rotating in the set direction, which is the opposite direction to the moving direction, the mainspring is wound up; on the other hand, when the mainspring is released, the mainspring's biasing force causes the mainspring and the main cam connected to it to be rotated in the timed rotation direction. A clockwork type time switch configured to rotate at a constant speed includes a fast-forwarding mainspring configured to apply a biasing force to a rotating shaft for fast-forwarding, and a rotating shaft for fast-forwarding and the above-mentioned rotating shaft for fast-forwarding. The main cam is connected to the main cam via a transmission mechanism that transmits the biasing force of the mainspring for rapid forwarding in a direction that applies a biasing force in the direction of timed rotation to the main cam, while releasing the lock from the periphery. A control cam having a section is coupled to the cam so as to be rotatable in conjunction with the cam, and a locking lever is pivotably 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 the locking lever contacts the moment the driven piece of the cam switch driven by the main cam is lifted and the force of the fast-forwarding mainspring is transmitted to the main cam. A clockwork time switch.