JPS649693B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time switch.

Conventional time switches have a motor and cam mounted on the main plate, and a dial above it.
Therefore, there is a problem that the time switch is thick or deep. As described above, since the thickness is increased, when the device is embedded, the space for installing the time switch becomes larger, and the main device also becomes larger. Furthermore, in the case of panel mounting, even if the protrusion to the front surface of the panel can be reduced, the protrusion to the back surface becomes large and may get in the way of other equipment. Furthermore, if the thickness is large, mounting on a printed board becomes difficult in practice.

A conventional time switch that is designed to be thinner has been proposed in which a dial consisting of a disk portion and a cylindrical wall on the outer periphery of the dial is disposed around the outer periphery of the clock mechanism.

However, like other conventional time switches, this time switch also uses dedicated support means such as bearings to rotatably support the dial. Further, parts such as nuts are required to prevent the support portion from coming off. Therefore, there are problems in that the number of parts for the support means and the retaining means increases, and the number of assembly steps also increases.

In addition, conventionally, when electrically connecting a drive part with a built-in dial drive motor and speed reduction mechanism to a main body with a motor drive circuit, the connection was made by soldering lead wires, etc., which made the work easier. There is a problem that it is bad.

The plug-in connection type improves assembly work efficiency. However, when the drive section is rotated and attached to the main body, for example, as in a bayonet type, there is a problem that the plug-in connection section interferes and rotation cannot be performed.

An object of the present invention is to provide a time switch that can simultaneously achieve a reduction in thickness and improved ease of assembly.

Another object of the invention as set forth in claim 5 is to provide a time switch in which the drive section and the main body can be electrically connected easily and the rotation of the drive section with respect to the main body is not hindered.

An embodiment of the invention is shown in FIGS. 1 to 14. In FIGS. 1 to 4, reference numeral 1 denotes a main body, a movement 2 serving as a driving section is attached to the center of the upper surface of the main body, and a dial block 3 is provided around the outer periphery of the movement 2. 4 is a transparent front cover. The movement 2 is formed into a stepped cylindrical shape with a large diameter at the top and a small diameter at the bottom, and a retaining flange 5 is formed on the outer periphery of the upper edge. The outer circumferential surface 6 of the large diameter portion of the movement 2 serves as a guide surface for the dial block 3, and a dial body 7 of the dial block 3 is rotatably fitted thereon. A protrusion 8 is provided on the outer peripheral surface 6 of the large diameter portion to improve sliding.
There are multiple protruding pieces. The dial main body 7 is prevented from being removed from the top and bottom between the removal preventing flange 5 of the movement 2 and the upper surface of the main body 1. The movement 2 is attached to the main body 1 using a plurality of engagement protrusions 9 (Fig. 4,
5) is engaged with the engagement notch 11 provided on the inner surface of the inner cylinder 10 of the main body 1. The engagement notch 11 is an L-shaped notch, and by slightly rotating the movement 2 after the engagement protrusion 9 is inserted, the movement 2 can be prevented from coming off.

FIG. 5 is an exploded perspective view showing the movement 2 upside down. The case of movement 2 is
Opaque upper case 13 and transparent lower case 1
It consists of 4. The surface of the upper case 13 is printed and serves as a dial 13a. The peripheral edge of the dial plate 13a serves as the retaining flange 5. 1
5 is a rotor, which consists of a permanent magnet and a plastic pinion 15a. 16 is a coil, and iron core 1
7 and hardened and homed by coating with alcohol. The iron core 17 is made of ferromagnetic material. The iron core 17 is formed into a substantially annular shape, and both ends thereof are shaped to apply a magnetomotive force to the rotor 15. The coil 16 is housed in a recess 18 provided on the outer periphery of the upper and lower cases 13 and 14. A coil collar 19 is made of an insulator and is fitted onto a part of the iron core 17. 20 is a pair of conductive terminal springs;
Each coil flange 19 supports and insulates the iron core 17 . A coil 16 is attached to one end of the terminal spring 20.
Both ends of the windings are soldered, respectively, and the other end of the terminal spring 20 is inserted into the terminal spring insertion hole 21 of the lower case 14.
exposed to the outside through This terminal spring 20
The other end is connected to the printed circuit board 22 (fourth
It comes into elastic contact with the surface of a terminal 23 made of a double-sided electrode plate provided in FIGS. In Figure 5, 2
Reference numeral 4 denotes a second wheel made of plastic, to which rotation is transmitted at a reduced speed from the pinion 15a of the row 15. The second wheel 24 has a pinion 24a, and the deceleration rotation is sequentially transmitted to similarly shaped plastic gears 25, 26, and 27. 28 is a plastic minute wheel that rotates once every 60 minutes. The minute wheel 28 has an annular portion, and an internal gear is provided on the inner periphery thereof. Also,
The minute wheel 28 has a through hole in the center. Reference numeral 29 denotes a metal rod serving as a minute hand shaft, which loosely fits into a hole in the minute hand wheel 28, and is provided with a one-way clutch wheel 30.
The clutch wheel 30 is capable of transmitting rotation in the forward direction of rotation of the minute wheel 28, and the minute wheel 28 does not rotate even if the clutch wheel 30 is turned in the other direction. The clutch wheel 30 is made of plastic. 31 is a minute wheel, which is rotated by the minute wheel 28 and meshes with an internal gear 32 of the dial body 7 (FIG. 3). The sun wheel 31 is the lower case 14
A portion protrudes from the opening 33 of. Note that each of the above-mentioned parts is held in upper and lower cases 13 and 14. The upper and lower cases 13 and 14 are connected by several setscrews 34.

In FIGS. 3 and 4, 35 is a minute hand, and a metal rod 29 passes through the minute wheel 28 (FIG. 5).
installed on. Rotation is transmitted from the minute hand 35 to the hour hand 36 with harmonic deceleration. That is, an eccentric cam (not shown) provided on the minute hand 35
The clock 36 is driven, and the rotation speed is determined by the fixed gear 37 of the upper movement case 13 and the hour hand 36.
It is regulated by the meshing of the internal gear 38.

Figures 7 and 8 for dial block 3
This will be explained with figures. The dial main body 7 has a large number of setting support recesses 39 evenly distributed in the circumferential direction on the upper surface of the bottom wall, and a hook portion 40 is provided on the upper edge of the inner periphery. Further, a regulation hole 41 is provided in the bottom wall of the dial body 7 adjacent to the outer circumferential side of each setter support recess 39 . Each setter support recess 39 has a setter 42.
is located. The setting element 42 is the disk part 42
a, an operating piece 42b extending tangentially upward from the disk portion 42a, and a switch engaging piece 42c extending tangentially downwardly and protruding from the regulation hole 41. The operating piece 42b has a spring property and has a locking protrusion 42d on the outer surface of the operating piece 42b. The switch engaging piece 42c has a strength close to that of a rigid body. The setter 42 is connected to the setter support recess 39 in the disc portion 42a.
It is rotatably supported. The rotation direction is a direction in which the dial main body 7 undulates in the radial direction. The lock protrusion 42d of the setter 42 is connected to the hook portion 40.
It can be hooked to. The number of setters 42 is provided depending on the minimum setting time interval. For example, once
When turning on and off at 15 minute intervals, 96 pieces are required. 43 is the dial upper plate, and the dial body 7
It has a plurality of attachment protrusions 45 that engage with the engagement holes 44 (FIG. 7). A setting support protrusion 46 is provided on the lower surface of the dial upper plate 43, and a time display 47 is provided on the upper surface. 48 is a display ring with a round cross section, which is connected to the disc portion 42 of the setter 42.
a and the operating piece portion 42b. The display ring 48 includes the dial body 7 and the dial top plate 4.
3 and setter 42, and has a complementary color relationship different from that of setter 42. For example, the setter 42 is white and the display ring 48 is red.

The transmission system from the setter 42 to the switch contact will be explained. In FIGS. 4, 8, and 14, 50 is a plastic switch lever, one end of which is rotatably supported by a column 51 (FIG. 14) protruding from the main body 1. The switch lever 50 is connected to the setter 42 as shown in FIG. 8A.
The length is such that it engages with the setter 42 when it is upright (on state), but does not engage when it is folded down (off state) as shown in FIG. 8B. An adjustment bush 53 is protruded near the center of the switch lever 50 to operate the movable piece 52 when the setter 42 is turned on (falls down). The degree of protrusion of the adjustment bush 53 can be changed using a screwdriver or other instrument. The adjustment bush 53 is molded at the same time as the switch lever 50, or is press-fitted therein. Reference numeral 54 denotes a movable piece support body, which supports the movable piece 52 inserted into an opening at one end, and makes the movable piece 52 rotatable about this part as a fulcrum. The movable piece support 54 has a mounting slit 55 provided in the main body 1.
It is press-fitted into the The other end of the movable piece support 54 forms a terminal 54a, which is connected to an external charging terminal through a mounting slit 55 in the main body 1. Movable piece 52
has a hooking notch 52a at one end, and this notch 52
It is rotatably supported by a movable piece support 54 at point a.
The movable piece 52 has a bent portion near the center, an opening at the other end, and engages with the movable contact piece 56 by rotation. The movable contact piece 56 is made of conductive metal, and one end engages with the movable piece 52, and the other end has a hole into which the movable contact 57 is press-fitted. At a position closer to the center, there is a small hole that holds a restoring spring 59 for keeping the contact points 57 and 58 normally open. The center portion of the movable contact piece 56 in the longitudinal direction is left empty for escape for mounting a restoring spring 59. Movable contact 57
is press-fitted and fixed into a hole provided in the movable contact piece 56. One end of the restoring spring 59 is hooked and supported by the movable contact piece 56, and the other end is hooked onto the support 6 that protrudes from the main body 1.
It has a round shape so that it can be hooked to 0. The fixed contact piece 61 has the fixed contact 5 in a small hole provided at one end.
8 is press-fitted and fixed, and is press-fitted into a mounting slit 62 provided in the main body 1. The other end of the fixed contact piece 61 has a terminal 61a similar to that of the movable piece support 54. The intermediate portion of the fixed contact piece 61 has the function of a lead wire. Reference numeral 63 denotes a terminal for receiving input from an external charging section, and is press-fitted into a mounting slit 64 provided in the main body 1. The printed board 22 is attached to a part of the terminal 63.
A spring plate provided on the printed board 22 comes into elastic contact with the printed board 22, and the circuit on the printed board 22 is energized. The printed circuit board 22 has circuit components mounted thereon, and the connection terminals that require connection are patterned by etching. Reference numeral 65 denotes a metallic spring material, one end of which is fixed to the printed board 22 by soldering, and a portion of the spring portion is in pressure and elastic contact with the terminal 63. This also prevents the printed board 22 from floating up.
66 is a capacitor, and 67 is a resistor, which suppress the charging current of the secondary battery 68. The secondary battery 68 is connected in parallel to the secondary side of the rectifier 69. The secondary battery 68 is used during a power outage. 70 is a crystal oscillator module in which a crystal oscillator, an IC, a resistor, a trimmer, etc. are mounted and sealed in a cylindrical tube. When a predetermined voltage is applied to the crystal oscillator module 70, a motor driving pulse is obtained. A capacitor 71 sets the drive pulse width of the output of the crystal oscillator module 70 to a predetermined value.

In FIGS. 9 to 13, reference numeral 72 is a manual switch piece for switching between two modules, a timer function and a normally closed module, which is formed in a U-shape and is elastically attached to one side of the main body 1. The annual switch piece 72 has protrusions 72a and 72b, and is attached to the guide groove 73 of the main body 1 so as to be able to slide sideways. The manual switch piece 72 has a protrusion 72c to provide a click feeling in the sliding direction, and the main body 1 is also provided with a protrusion 75 at a predetermined position. Further, the manual switch piece 72 has one end in the sliding direction extended toward the main body 1 side, and presses the free end of the column 51 on which the switch lever 50 is rotatably mounted, thereby preventing the switch lever 50 from coming off. There is. The manual switch piece 72 has a sloped part 72d at the center in the sliding direction, and by using this slope, the switch lever 50 is pushed in and the contacts 57, 5
Close 8.

The main body 1 is made of plastic, has a bowl shape, and has four protrusions 76 near the four corners of the top surface. This protrusion 76 is provided with a recess 77 for mounting the front cover 4 and a mounting hole 78 for mounting the time switch on a device or panel. The main body 1 also has a recess 79 for mounting the manual switch piece 72, and the recess 79
The surface has the guide groove 73 (FIG. 12) and a protrusion 75 (FIG. 11) for a click feeling. The central portion of the main body 1 is raised in the shape of a disk, and the outer circumferential surface thereof protrudes upward to form the inner circumferential cylinder 10 for stopping the movement 2. The inner wall has a plurality of stop guide grooves and slide grooves. A plurality of mounting slits 55, 62, and 64 for press-fitting and fixing terminals are radially opened in the disc-shaped raised portion. The opposite surface is hollow, with the central part between the holes protruding. The concave portion of the main body 1 other than the disk-shaped central portion is provided with a printed board guide protrusion and a cut-off portion for showing through solder of a circuit component, in addition to the aforementioned loading means and support.

Next, the operation of this time switch will be explained. Power is supplied from a pair of external input terminals 63 to a rectifier 69 through a spring plate 65, a capacitor 66, and a resistor 67 that come into elastic contact with the rectifier 69. Power is supplied from the secondary output terminal of the rectifier 69 to a secondary battery 68 and a crystal oscillator module 70 connected in parallel. As a result, the secondary battery 68 is charged, and a pulse is transmitted from the crystal oscillator module 70. This pulse width is variable depending on the capacitance of the capacitor 71. This driving pulse is applied from the double-sided electrode plate terminal 23 to the coil 16 through the terminal spring 20. As a result, the rotor 15 rotates, and the rotation is transmitted to each of the gears 24 to 27, thereby moving the minute wheel 28. The clock wheel 31 is rotated via the clutch wheel 30. It is transmitted from the minute wheel 31 to the internal teeth 32 of the dial block 3, and the dial block 3 rotates. Therefore, when the time set by the setter 42 comes,
The switch engaging piece 42c of the setter 42 pushes down the switch lever 50, and the displacement is transmitted to each member, and finally the contacts 57 and 58 are closed. This is drawn out via the fixed contact piece 61 and the movable piece support 54.

In order to keep the contacts 57, 58 closed, the manual switch piece 72 can be slid to keep the switch lever 50 depressed at all times.

The operation of the setter 42 will be explained. In FIG. 8A and FIG. 14B, the setting element 42 is connected to the switch lever 5.
0 engaged state (time setting state)
shows. 8B and 14A are setter 42.
This is a state in which the switch lever 50 is disengaged (a state in which no time is set). In FIG. 8A, the setter 42 loosely supported by the dial body 7 and the dial upper plate 43 is moved by the hooking protrusion 40 of the dial body 7 by the protrusion 42d of the operating piece 42b.
rotation in one direction is stopped. Rotation in the other direction is stopped by the edge of the regulating hole 41 of the dial body 7. Thereby, even if the switch lever 50 is engaged with the switch lever 50 provided on the main body 1, the switch lever 50 can be displaced without rotating. The display ring 48 attached to the gap in the center of the setter 42 can be seen from the top.
It can be seen that the visible part is the contact closed state. In FIG. 8B, when the hook protrusion 40 of the dial body 7 and the setter 42 are disengaged, the setter 4
2 switch engaging piece 42c and switch lever 50
The engagement relationship with is removed. The operating piece 42b of the setter 42 comes off the hook protrusion 40 of the dial body 7 and comes into contact with its tip surface, and the lower switch engagement piece 42c comes into contact with the reflective edge of the regulation hole 41 of the dial body 7. It is fixed, that is, its rotation is restricted.

Although the operation is performed in this manner, the following advantages can be obtained because of the above-mentioned configuration. Since the movement 2 is arranged in the space inside the dial block 3, it is possible to make it thinner. Since the movement 2 uses a motor with an annular coil 16, the movement 2 can be made smaller, thinner, and have a higher ampere turn. In addition, since the movement 2 is made into a round shape using the annular coil 16, the dial block 3 can be placed around the outer circumference without any gaps.
The overall size and thickness can be further reduced. Since the dial block 3 is rotatably mounted using the outer circumferential surface of the movement 2 as a guide surface, there is no need to provide another means for guiding, and the number of parts can be reduced and the structure can be simplified. Since the setting element 42 is attached to the dial body 7, it does not need to be stored unlike conventional removable setting elements, and is convenient to use. Moreover, the setting element 42 can be operated by simply tilting it down or raising it up, making the setting operation easy. Since the display ring 48 is provided, the set time can be easily seen. Main body 1 and movement 2,
Since it is integrated into the dial block 3, assembly is easy. Moreover, since the movement 2 and the printed board 22 of the main body 1 are energized by elastic contact between the spring terminal 20 and the double-sided electrode plate terminal 23, assembly is even easier. minute hand 3
Since the speed reduction from 5 to the hour hand 36 is a harmonic speed reduction type, the number of gears can be reduced, and this also allows the watch to be made thinner. Since it has a clock display, it is possible to make settings on the spot. Furthermore, since the dial block 3 is prevented from coming off by the retaining flange 5 provided on the movement 1 and the upper surface of the main body 1, there is no need for a means for preventing the dial block 3 from coming off, which further simplifies the structure. The dial block 3 can be prevented from coming off at the same time as the assembly, and the number of assembly steps can be reduced. Double-sided electrode plate terminals 23 connected to the spring terminals 20 are provided on both sides of an insulating plate that protrudes parallel to the tangential direction of the dial body 7, so when the movement 2 is rotated relative to the body 1, these double-sided electrodes are connected to the spring terminal 20. The plate terminal 23 and the terminal spring 20 do not interfere with each other, and the installation work of the movement 2 is not hindered. Other advantages include power outage compensation and quartz type high accuracy.

In the above embodiment, the rotary setting element 42 is used for the dial block 3, but the present invention can also be applied to a conventional removable setting element.

As described above, the time switch of this invention is
Since the annular dial is used and the drive section is provided therein, the device can be made thinner. However, since the dial is rotatably supported using the outer peripheral surface of the drive section as a guide surface, there is no need for a dedicated support means for rotatably supporting it, and the number of parts is reduced, making the structure simpler and more compact. can get. Further, since the dial is prevented from coming off by the retaining flange provided on the drive part and the upper surface of the main body, no detachment preventing means is required, which further simplifies the structure and reduces the number of assembly steps.

According to the invention set forth in claim 5, in addition to the above-mentioned effects, the following effect cannot be obtained; that is, the pair of terminal springs connected to the coil of the motor within the drive section are made to protrude from the drive section. Since it contacts the terminal of the main body, electrical connection can be made at the same time by assembling the main body and the drive part, eliminating the need for connection work. However, since the terminals are provided on both sides of an insulating plate that protrudes parallel to the tangential direction of the dial, these terminals and the terminal spring do not interfere when the drive unit is rotated relative to the main body, and the drive unit The effect is that it does not interfere with the installation work.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of the upside down state, FIG. 3 is a partially omitted sectional view, FIG. 4 is an exploded perspective view of the same, and FIG. The figure is an exploded perspective view of the movement upside down, Figure 6 is a sectional view showing the terminal spring and terminal, Figure 7 is an exploded perspective view of the dial block, and Figures 8A and B are Similarly, FIGS. 9 and 10 are respectively a front view and a side view of the manual switch piece, and FIGS. 11A to 11C are illustrations of the operation of the manual switch piece. Fig. 12 is a sectional view of the stairs taken along line XII-XII in Fig. 11A, Fig. 13 is a sectional view of the stairs in the operating state of Fig. 11B, and Figs. 14A and B are explanatory diagrams of the switch operation using the setter. It is. 1...Main body, 2...Movement (drive unit), 3...
Dial block, 4... Front cover, 6... Outer circumferential surface (cylindrical guide surface), 7... Dial body, 13... Upper case, 14... Lower case, 15... Rotor, 16... Coil, 17... Iron core, 20... Terminal spring , 21...Terminal spring insertion hole, 22...Printed circuit board, 23...Double-sided electrode plate terminal, 28...Minute wheel, 30...Clutch wheel, 3
1...Day wheel, 32...Internal gear, 35...Minute hand, 36
...Clock, 39...Setter support recess, 40...Hook part,
41...Regulation hole, 42...Setter, 42a...Disc part, 42b...Operation piece, 42c...Switch engagement piece,
42d...Protrusion, 43...Dial top plate, 48...Display ring, 50...Switch lever, 53...Movable piece,
54...Movable piece support, 56...Movable contact piece, 57...
Movable contact, 58... Fixed contact, 59... Restoration spring, 6
5...Metallic spring plate, 68...Secondary battery, 70...Crystal oscillator module, 72...Manual switch piece.

Claims (1)

[Scope of Claims] 1. A main body housing a motor drive circuit section and a switch contact section, a dial drive motor and a speed reducer whose outer circumferential surface is formed into a cylindrical guide surface and has a retaining flange on the upper edge of the outer circumference. It has a drive part that houses a mechanism and is attached to the top surface of the main body, and a setter that sets the time, and is rotatably fitted onto the outside of the drive part and is prevented from coming out by the retaining flange and the top surface of the main body. A time switch with a ring-shaped dial. 2. The time switch according to claim 1, wherein the dial has internal teeth, and an output gear forming a part of the speed reduction mechanism of the drive section projects from the drive section and meshes with the internal teeth. 3. The time switch according to claim 1, wherein a clock hand drive shaft driven by the speed reduction mechanism protrudes from the center of the upper surface of the drive section. 4. The time switch according to claim 1, wherein the case of the drive unit is comprised of an opaque upper case whose upper surface serves as a dial plate, and a transparent lower case. 5 A main body housing a motor drive circuit and a switch contact part, and a dial drive motor whose outer circumferential surface is formed into a cylindrical guide surface, has a retaining flange on the upper edge of the outer circumference, and has a terminal spring insertion hole on the lower surface. and a drive section that houses a deceleration mechanism and is attached to the top surface of the main body, and a setter that sets a time, which is rotatably fitted onto the drive section and is pulled out by the retaining flange and the top surface of the main body. a fixed annular dial; a pair of opposing terminal springs connected to the coil of the motor of the drive unit and protruding outward from the terminal spring insertion hole; A time switch comprising a pair of terminals provided on both sides of an insulating plate projecting in parallel and connected to the motor drive circuit of the main body so that the pair of terminal springs come into elastic contact in a pinched state.