JPS61237324A - Spring type time switch - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention aims to solve the following problems.

(Industrial Application Field) The present invention includes a first cam and a second cam, and operates a first switch driven by the first cam at long intervals, and a second switch driven by the second cam. This invention relates to a time switch that operates at short intervals.

(Prior art) In this type of time switch,
By connecting the second cam to an intermediate gear in a series of gears connecting the first cam and the clock mechanism, the second cam can be connected to the first cam.
The cams are rotated at a faster speed than the cams, and the first and second switches are individually driven by the cams. However, in such a case, the second switch must be placed in a position different from the first switch and overlapped with the gear train, resulting in a problem that the time switch becomes larger in size. In addition, in order to eliminate this problem, the second cam was replaced with the first cam.
If the second cam were to rotate integrally with the cam, the pitch of the concave and convex portions of the second cam would have to be made finer, creating a new problem in that the accuracy of the operating time of the second switch would deteriorate.

(Problems to be Solved by the Invention) This invention eliminates the above-mentioned conventional problems and provides a mainspring that not only can obtain two types of time signals, but also has high time precision and can be miniaturized. It attempts to provide an expression timesinch.

The configuration of the present invention is as follows.

(Means for Solving the Problems) The present invention takes the measures as described in the claims above, and its effects are as follows.

(Operation) The rotation of the first cam activates the first switch that is driven by the rotation of the first cam. In this case, the second cam, which is interlocked with the first cam through a speed-increasing gear train, rotates farther than the first cam, and the second switch that is driven by the second cam operates at shorter intervals than the first switch. do.

(Example) Below, drawings showing examples of the present application will be described. A case (2) is composed of a base plate 2 and a cover 3 detachably fixed to the base plate 2 with a set screw 3a. 2a indicates a mounting portion. 4 is a rotatable main shaft, 5 is a No. 1 gear connected to the main shaft 4 via a well-known friction transmission mechanism 6, and 7 is a mainspring, one end of which is fixed to the No. 1 gear and the other end to the base plate 2. be. 8 is a driving body fixed to the main shaft 4, and 9 is a driving piece.

Next, 11 is a first cam attached to the main shaft 4, and a cam element 12
and another cam element 14 attached to the shaft part 13 of the cam element 12, and a driving piece 9 is positioned in each through hole 15 to receive rotational force.
1 shows a shaft attached to the case 1. Among the members attached to the shaft, 17 is a second gear, 18 is a second pinion, and a well-known one-way clutch 19 is interposed between them.

20.21 is the 4th pinion and 4th pinion formed integrally with each other.
The 0th gear 22 indicates another shaft attached to the case 1. In the members attached to this, 23.24
25 shows the second cam and 26 the third cam, which are designed to rotate integrally with the third gear 24. 28 is a well-known escape wheel, and 28 is a balance wheel, which constitute a well-known clock mechanism. Note that the gears No. 1 to No. 3 and each pinion constitute a gear train for increasing the rotational speed of the first cam and transmitting the rotation to the clock mechanism. Next, reference numeral 30 denotes a space for arranging a switch, which is provided adjacent to the first to third cams, and the gear train is provided on the side opposite to the space with respect to these cams, as shown in the figure. ing. 31 is a first switch, which includes a support body 32 and a plurality of contact plates 31 supported by the support body 32;
It consists of a, 31b, and 31C. As clearly shown in FIGS. 5 and 6, one end of each contact plate projects from the support 32, and the cage there serves as a terminal 33 for connection. Next, numeral 34 is a second switch that is movably in contact with the second cam 25, and numeral 37 is a third switch.
A third switch is placed in contact with the cam 26 in a freely movable manner, and is configured equally with the first switch 31, and is arranged in an overlapping manner in the axial direction of the main shaft 4 with respect to the first switch 31 as shown in the figure. It is set up. In these switches,
Reference numerals 35 and 38 indicate a support, and 36 and 39 indicate connection terminals. The supports 32, 38, 35 are connected to each other in a stacked manner and are fixed to the substrate 2.
is a transmission body, and a shaft body 42 provided at its base is rotatably supported by bearings 43 and 44 formed on the base plate 2 and the cover 3. Cam contact portion 41a of this transmission body 41
is brought into contact with the cam element 12, and the switch contact portion 41b is brought into contact with one contact plate 31a of the first switch 31.

45 is another transmission body, and its base portion 46 is rotatably mounted on the shaft body 42 of the transmission body 41. The cam contact portion 45a of the transmission body 45 is brought into contact with the circumferential surface of the force element 14, and the switch contact portion 45b is brought into contact with the other contact plate 31b of the first switch 31, respectively. Reference numeral 47 denotes a balance lever holder integrally formed with the transmission body 41, and is configured to stop the operation of the balance 128 when the cam contact portion 41a abuts the recessed portion of the cam element 12.

Next, mainly in FIGS. 9 to 11, 50 indicates a number of lead wires connected to the terminals 33, 36, 39, and 51
shows the terminal cover removably attached to the case. In this case, reference numeral 52 denotes a fitting piece that fits into a fitting part 53 provided on the substrate 2. Reference numeral 54 denotes an engaging claw that engages with a retaining portion 55 provided on the cover 3. Reference numeral 56 denotes a removal operation hole, through which the tip of a screwdriver or the like can be inserted to disengage the engagement claw 54 and the engagement portion 55. Reference numeral 57 is a positioning groove for connecting the plurality of lead wires 50 to the first position.
This is a part provided to position it in the state shown in Figure 0.

In the above configuration, when the main shaft 4 is manually rotated in the setting direction, the first cam 11 is rotated by the drive piece 9, and the first gear 5 is integrally rotated via the friction transmission mechanism 6. Rotate. As a result, a biasing force is accumulated in the mainspring 7. In this case, the second pinion 18 rotates,
The rotation is blocked at the one-way clutch 19 and is not transmitted to the second gear 17. As the cam 11 rotates as described above, the transmission body 41.45 tilts around the shaft body 42, When the switch 31 is opened or closed, the balance holder 47 is separated from the balance 28. When the hand is released from the output shaft 4 after the setting operation as described above, the biasing force of the mainspring 7 attempts to rotate the main shaft 4 back in the opposite direction through the No. 1 gear 5. In this case, since the one-way clutch 19 is connected in the direction of rotation, the rotation of the No. 1 gear 5 is controlled by the No. 2 pinion 18.
．． The speed is increased in the process of being transmitted through the No. 2 gear 17.3 and the nion 23, and the second cam 25 and the third cam 26
It rotates at a faster speed than the cam 11. The rotation of the third gear 24 is further accelerated through the fourth pinion 20 and the fourth gear 21, and is transmitted to the escape wheel 27. And the escape wheel 27
By the well-known operation of the balance wheel 28, the rotational speed of the fourth gear 21 is controlled to be constant. As a result, the second cam 25
, the rotational speeds of the third cam 26 and the first cam 11 are controlled to a constant speed. As the second cam 25 and the third cam 26 rotate as described above, the second switch 34 and the third switch 37, which are movably brought into contact with each other, can be opened/closed or closed depending on the uneven shape of each cam. The above-described switching operation continues, and when the set time limit elapses, the cam contact portions 41a, 45a switch to the cam element 12. ,.

14, the first switch 31 returns to the state shown in FIGS. 5 and 6. Also, balance presser 4
7 stops the operation of the balance wheel 28 and the operation of the time switch.

Next, in the time switch configured as described above, if it is not necessary to operate the contact plate 31b of the first switch 31, the cam element 14 of the first cam 11 and the transmission body 45 are removed. In this case, even if they are removed, the shaft portion 13 of the cam element 12 extends to a position close to the cover 3, so the cam element 12 will not be displaced in the axial direction, and the transmission body 41 will not be displaced. Since the shaft body 42 at the base is supported by bearings 43 and 44, displacement of the main shaft 4 in the axial direction is prevented. As a result, they can carry out their prescribed operations without any hindrance.

Next, in the time switch having the above configuration, when the lead wires 50 are drawn out from the multiple connection terminals 33, 36, 39, the lead wires 50 are welded or brazed to each terminal in the direction shown in FIG. is connected by a means, with the fitting piece 52 of the terminal cover 51 fitted into the fitting part 53, and the end of the cover 51 on the side where the engaging claw 54 is provided facing the cover 3. By pressing it, the engaging claw 54 engages with the engaging portion 55, and the terminal can be surrounded by the cover 51. In this case, since the inner surface of the cover 51 is formed in a long groove shape in the direction in which the supports 32, 38, 35 overlap, the inner space of the cover 51 can be used as a duct for drawing out the lead wires 50, which is very convenient. be.

(Effect of the invention) As described above, in the present invention, the first
And when operating the second switch 31, 34, the first switch 31 can be operated at long intervals by the first cam 1, and the second switch 34 can be operated at short intervals by the second cam 25. It has the advantage that two different timed operating signals can be obtained from the switches 31, 34.

Moreover, in the above case, even if the second cam 25 operates the second switch 34 at short intervals, the second cam 25
rotates at a higher speed than the first cam 11, so the second cam 2
No. 5 has the effect that the pitch of the concave and convex portions is large, and the timing accuracy of the operation of the second switch 34 can be improved.

Further, as described above, the first and second switches 31 and 34 are respectively connected to the first and second cams 11.34 having different rotational speeds as described above.
25, a space for arranging the switch is provided adjacent to the first and second cams 11.25, and the gear train connecting the cam and the clock mechanism is located in that space. are arranged on opposite sides, the first and second switches 31 and 34 can be arranged in the switch arrangement space so as to overlap each other, and as a result, the form of the time switch can be reduced in size. There is an effect that can be done.

[Brief explanation of drawings]

The drawings show an embodiment of the present application; FIG. 1 is a front view of the time switch with the cover removed; FIG. 2 is a longitudinal sectional view showing the correspondence between a plurality of cams and a plurality of switches; Figure 3 shows the second position at the ■-■ line position in Figure 2.
4 is a diagram showing the relationship between the third cam and the third switch at the rl/-IV line position in FIG. 2, and FIGS. 5 and 6 are diagrams showing the relationship between the cam and the second switch. Each V in Figure 2
-A diagram showing the relationship between the first cam and the first swing at the V line position and the Vl-VI line position.
Figure 8 is a partial sectional view taken along the line ■-■ in Figure 1, Figure 9 is an exploded perspective view showing the relationship between the cover and the terminal cover, and Figure 10 is the terminal cover and FIG. 11 is a partial perspective view showing the state in which the lead wires are attached, and is taken from XI-X I! in FIG. 10. #I sectional view. 1... Case, 4... Main shaft, 11... First cam,
25...Second cam, 31...First switch, 34...
...Second switch. Figure 1 Figure 2

Claims (1)

[Claims] The first cam, which is rotatably provided in the case and rotated by a spring, is equipped with a clock mechanism for controlling its rotation speed, and the rotation speed of the first cam is sequentially increased. A second cam is connected to the clock mechanism through a gear train, and a second cam is rotatably connected to a gear in the middle of the gear train, and a first switch and a second cam are connected to the case. The first cam and the second cam are provided with two switches, and the first cam and the second cam are arranged so that the first switch is actuated at long intervals, and the first cam is actuated by the first cam at long intervals. In a wind-up time switch in which the second switch is operated at short intervals by a second cam that rotates at a high speed, a space for arranging the switch is formed on the side of the first cam, and
The second cam is disposed adjacent to the space, the tooth train is disposed on a side opposite to the space with respect to the second cam, and the first and second switches are disposed in the second cam. A wind-up time switch characterized by being arranged in an overlapping manner in the switch arrangement space.