DE1523926B2 - Clock with self-winding mainspring - Google Patents

Description

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There are different types of clocks with automatic self included in the circuit, but serve Elevation of the tension spring by means of an electric motor only for the actuation of contact springs, which are between known. The actual switch-on contact will be established on this basis, if possible, seen that only a range of the mainspring tension. Accordingly, the invention is based on a clock is exploited, the one revolution of the spring wheel 5 with automatic winding of the tension spring by means of a is equivalent to. This can lead to a good gear in the electric motor, in which the electric motor flattens out Part of the spring characteristic can be placed. driven winding wheel and the spring wheel each one

The known solutions, however, satisfy all switching pins that enter once with each revolution not right. In particular, the known associated ratchet actuate that with a Kon devices the contacts and other parts erio clock spring is engaged. The invention is significant Subject to wear and tear and need is characterized in that the two ratchet wheels are firmly sometimes also great forces to operate. .. ,, .. are interconnected and designed in such a way that

Thus, the contact is made by a ball between the contact springs provided with contacts

see two mutually rotatable ratchet wheels, rotation of the ratchet wheels by the spring-wheel switch

where the current is stretched over at the same time to the detent 15 pin, and the contacts that make the circuit

serving contact spring is supplied, according to the winding motor close, be closed,

German patent 528 653 very unsafe and due to the fact that the switching

the further development. With technology, wheels have long since overtaken the contacts with the winding gear shift pin

been. ...... to be opened again and that the switch pins

After all, this switching device was in spite of 20 compared to the gears assigned to them

their other defects a jerky in and out a certain angle are freely rotatable,

circuit of the elevator motor, through which the con- This can be achieved by appropriate design of the

clock wear is reduced, possible. This is relatively easy for the teeth of the two ratchet wheels

the. most newer switching devices cannot be reached / reached. One of the two firmly united

whereby the arrangement according to the German patent 25 bound ratchet wheels also opens the contact,

script 606 337, in which the circuit is dependent and the other ratchet wheel closes the contact. the

due to the fact that the switching wheels are only operated briefly,

disregarded due to gear fluctuations so that a jerky opening and closing

can stay. the contact is guaranteed and required

In the arrangement according to the German interpretation, the actuation of the contact springs, which do not involve any special

writing 1050 275 can have a fairly sudden continuous mechanical task, but very little

"Switching on can be achieved; but to switch off ■ - ■ power.

of the drive motor becomes a contact brush gradually. . An embodiment of the invention is according to

Lich lifted from the collector of the drive motor. described standing on the basis of the drawing. Here-

Damage to the collector and the brush are 35 in

this is inevitable in the long run. A b b. 1 is a general view of the movement of a

The same applies in the opposite sense to the clock according to the invention with an automatic spring solution according to the German utility model winding; ■: .l (
1700 253, in which a contact of the drive Fig. 2 a perspective view of the return motor is slowly closed by a pin on the spring drive wheel only 40 running blockage for the elevator motor with gear drive. In addition, grinds during * A b b. 3 an enlarged perspective part of the revolution of the drive motor, a pawl, constant 'view' of the contact springs and the double cam on the circumference of the winding wheel, as a result of which a ratchet wheel takes place for rapid contact wear of these parts. spring actuation,

; ■■: '' In the "German patent specification: 240 029 '., 4'S ::! -. Fig. 4 and 5 are a representation of the two switching

Pawls and rotating cam disks also wheel profiles,

in constant contact, and also happens A b b. 6 to 13 adjustment of various positions

also here the switching on and off of the motor, the contact springs of the cam disk and the two

, ·, Through. Hang up and. Take off, a brush on the. .Switching pins and. ,.,

"Collector with the disadvantage described above. '50"' Ä b b. 14 is a perspective view of the train US Pat. No. 1,733,689, the spring arrangement occurs.

Making contact through a circumferential sliding contact In the drawings, 1 is an electric motor, 2 is a

and a brush, whereby the duty cycle of the motor - pinion sitting on the motor shaft and 3 a reverse

by a driver. on, spring output gear, running lock. 4 is a meshing with the pinion 2 and is correct. Here, too, ^{J '} switch-on and -'5S ¹ -'an'-gear attached to the shaft go. Around the wave 5

Switching off only gradually in front of you, ·. ' ! _r:; \\ ■ '· .: is a compression spring 6 wound on to a loose

U.S. Patent -3 031: 837; is the shaft 5 arranged locking disk 7 acts. You also have a contact arm, in. .Longer has a stop 8, ordering from a contact with a contact surface on the winding bow end piece, 'And · one ^! opposite to this wheel and is also controlled by the spring tension by means of 60 locking clamps 9 _; ^J which is also influenced by a contact. Here, too, there is a suddenly bent end piece and switching on and off in a winding wheel is not possible. 13 can intervene.

In contrast, the invention takes effect since the locking disk 7 lies loosely on one of the

long abandoned ratchet wheels back, the only shaft 5 attached pinion 10 and stands with this

a reliable jerky switching on and off 65 in frictional contact. The pinion 10 is with the

guarantee. In contrast to the earlier Kon- on the tension spring shaft 18 freely rotatable winding wheel

However, according to the invention, the two 13 are in engagement. The shaft 5 is in a plate 11

Ratchet wheels firmly connected to each other and not stored, which has a retaining slot 12 for engaging the

Has stop 8. An elevator switch pin 14 is carried along by the elevator wheel 13. The switch pin 14 has a certain freedom of movement in relation to the winding wheel 13. On wave 18 - that's for Drive of the gear mechanism serving spring wheel 15 attached. Between the two gears 13 and 15 the tension spring 17 is tensioned. As from A b b. 14, the gear 15 also has a switching pin 16 on. Both switch pins are opposite in a certain angular range (for example by about 90 °) the associated gears are freely rotatable. A pinion 19 attached to the winding shaft 18 is used for actuation of the pointer mechanism 21. ■ ■■■■ -. · ■

Upon rotation of the engine 1 via the gears 4 and 10, a rotation of the gear 13 and thus lift the tension spring 17 Durch'die spring biasing force, the position indicator 21 and the other part of the regulator 22 via the one ^hand: engine 20 is driven at a constant speed. In order to maintain the torque required for proper interruption, the tension spring 17 has a certain pretension. - ¹

The switching pins 14 and 15 act on switching wheels 24 and 25. These are on a common ,, ' Shaft 23 attached and - "form a double cam, disk for actuating the contact springs 26 and 27. As shown in A b b. 3 is the contact spring

26 from the cam disk 24 and the contact spring

27 actuated by the cam disk 25. 28 is a holding plate for the contact springs. The lower contact spring 26 carries a contact 29 and the upper contact spring 27 carries a contact 30. The two contacts come into contact with one another when the contact spring 26 is raised. The upper contact spring 27 has a bent leg 31 on its head part 32. An electric battery 33 (A b b. 1) serves as a power source.

The operation of the invention is explained below.

In A b b. 6 the contacts are open and the engine has been switched off for some time. During the Motor switch pin 14 is stationary, the rotation of the spring switch pin 16 continues during the entire time continue in the direction of the arrow.

In the in A b b. 8 position shown, the spring switch pin 16 ^ begins to take the cam disk 25 with it. The head part 32 of the upper contact spring 27 slides on the circumference of the cam disk 25th

According to A b b. 9 is released when the cam disk 25 is carried along by the spring switch pin 16 the upper contact spring 25 of the cam and the contacts 29 and 30 close for one Moment. This causes the motor to start rotating and the motor switch pin 14 to rotate in the direction of the arrow. In the meantime the mainspring has continued to turn. The motor switch pin However, 14 rotates much faster than the spring switch pin 16. In the present embodiment the motor switch pin 14 is set so that it makes one revolution in 2 seconds during the spring switch pin 16 covers one such in 10 minutes.

In A b b. 10, the motor switch pin 14 has already made a full turn, the cam disk 24 and the lower contact spring 26 together with the upper contact spring 27 raised. A certain amount of force is required to lift the two springs Torque of the motor 1 is supplied, there is no reaction on the tension spring 17 and the Gear regulator 22 instead. - ■ ·. · ._ "·: ·:; ...: -. ^ I:

If the rotation continues, the lower contact spring 26 falls off the cam disk 24 as shown in FIG. 7. In this case, the contact spring 27 remains on the cam disk 25, so that the contacts 29 and 30 suddenly separate from one another and the motor 1 is switched off A groove formed by the cam disks 24 and 25. ■ ■ · ■ '' - · ^; '' - ^ ^Λ ■ "- ■ '■ -' ■ '■■ - ■■■■: - ■ ;;., ■ ■ '■' ■ '■' · ■■■■ '' ■ - ■■■■ ^! .YA: uü-J '.; Hy-i

The elevator process described is repeated periodically in such a way that the motor when the The tension spring pulls it up by one turn in the manner described. The regulator 22 is therefore continuously driven with an almost constant torque. That way results high accuracy. Is the tension that-C Battery 33 decreased so much that the motorÜ no longer sufficient torque 'to wind up when the tension spring 17 is applied, the contacts first close as in Fig. 9 around the motor seeks to begin its rotary motion. As a result of the insufficient torque, however, the motor switch pin remains 14, as shown in Fig. 11, stand in any position. The spring switch pin 16 initially continues to rotate independently of the switching pin 14, but when it comes into contact with the circumference of the switching wheel 25 brought to a standstill, so that the clockwork loses its driving force and also stops.

The spring-driven switch pin 16 is now looking to take the cam disk 25 in the opposite direction, but is prevented by the bent part 31 of the contact spring 27 from doing so. When not available of part 31, the cam disk would be locked on the head part 32, the cam disk but would move a little backwards beforehand, whereby the circumference of the cam disk 24 would get into the path of the elevator switch pin 14. When the engine rotates later and the like Driving the elevator shift pin 14 would bring this into contact with the circumference of the Switching wheel 24 come ^ and therefore cannot set it in rotation. This is why the bent part 31 is attached to the contact spring 27.

The mainspring cannot relax completely, but retains part of its preload at. When a new battery has been inserted, the motor starts rotating again and develops sufficient torque to wind the mainspring.

Thus, the cam disk 24 is shown in Fig. 12 rotated, the spring switch pin 16 comes free from the cam surface 25, and at the same time the contact spring 26 is raised. The motor 1 continues its rotation, the contacts open according to Fig. 13, and the engine is switched off again. Thereupon a new rotation quickly takes place of the spring switch pin 16 a. After a while, the cam is actuated according to A b b. 8, and the periodic drive sequence continues in the manner described.

As mentioned earlier, the switch pins have

14 and 16 in the direction of rotation with respect to the gears 13 and 15 some play. If that is double If the ratchet wheel is rotated further by a switch pin, the next following switch tooth pushes in the Position of A b b. 9 from behind onto the second switch pin. When the tooth 25 'is actuated by the Spring switch pin 16 entrains the motor switch pin 14 through the tooth 24 "located behind the tooth 24 '; likewise when the Tooth 24 "by the motor switch pin 14 a take along of the spring switch pin 16 from behind by the Tooth 25 "in A b b. 7. If the gear and the associated switch pin are firmly connected, if they get stuck at this point, the cam disc cannot turn any further. Because of the mutual play of the switching pins and gears only results in a twisting of the trailing one Switching pin opposite its gear, which prevents the cam disc from jamming can. With the next gear drive, the gear will overtake the switch pin and then work again normal.

Claims (1)

Claim: Clock with automatic winding of the mainspring by an electric motor, which is done by the electric motor driven winding wheel and the spring wheel each carry a switching pin, which with each revolution operate once an assigned ratchet wheel, each with a contact spring is in engagement, characterized in that the two switching wheels (24, 25) are fixed to one another are connected and designed such that the contact springs provided with contacts (29, 30) (26,27) when the switching wheels (24,25) rotate by the spring wheel switching pin (16) and the contacts (29, 30) which close the circuit of the elevator motor, closed be that in the subsequent rotation of the ratchet wheels (24,25) by the elevator wheel holding pin t (14) the contacts (29,30) are opened again and that the switching pins (14,16) freely rotatable through a certain angle with respect to the gears assigned to them (13, 15) are. For this purpose 2 sheets of drawings