CN115808866A

CN115808866A - Timer with alarm clock function

Info

Publication number: CN115808866A
Application number: CN202211579835.8A
Authority: CN
Inventors: 池汉军; 池睿平; 赵建飞; 游亮
Original assignee: Hangzhou Jingcheng Sanhe Timer Industry Co ltd
Current assignee: Hangzhou Jingcheng Sanhe Timer Industry Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-17
Also published as: WO2024119594A1

Abstract

The present invention relates to a timepiece. The timer has the advantages of being clear and definite in alarm time and real-time display, easy to identify, simple to use, fast and convenient. The technical scheme is a timer with alarm clock function, its characterized in that: the shell is also internally provided with a timer movement and a timing assembly driven by the timer movement; the alarm clock is characterized in that an angle displacement sensing assembly which is electrically communicated with the main control circuit to set alarm time is further arranged in the shell, and an alarm time display structure matched with the angle displacement sensing assembly is arranged on the dial disc.

Description

Timer with alarm clock function

Technical Field

The invention relates to a timing device, in particular to a timer with an alarm clock function.

Background

The alarm clock is a necessary timing appliance for every family; and the alarm clocks on the market are various in variety and have various characteristics. For example, CN2643359Y discloses a pointer type quartz electronic time-telling alarm clock which can synchronize voice time-telling with pointer travel time, and has functions of pressing time-telling and pressing halving; the automatic quartz alarm clock and the movement thereof disclosed in CN2420666Y have a timing alarm-stopping function. The alarm clock has the defects that the functions are few, and only real-time and set alarm time can be displayed; in addition, the setting of the alarm time is mostly in a pointer type or a key type; in the pointer type, a user usually rotates the timing pointer for a plurality of circles to align the required time scales, and the timing pointer has a tiny structure, so that the operation is troublesome. The alarm clock is of a key type, and the alarm clock can be set only by displaying the alarm clock on a display screen and frequently repeating the drum stamping key for a plurality of times by a user; . In addition, the conventional timer has only a timer function, and is not high in use rate for many users.

Disclosure of Invention

The invention aims to overcome the defects of the background technology and provide the timer with the alarm clock function, which has the functions of an alarm clock and timing, and has the characteristics of clear and definite alarm time and real-time display, easy identification, simple use, quickness and convenience.

The technical scheme provided by the invention is as follows:

a timer with alarm clock function comprises a casing provided with a battery and a main control circuit, a clock circuit and an alarm circuit which are fixed in the casing and electrically connected with the main control circuit, and a display screen which is arranged on a dial disc at the front part of the casing and electrically connected with the main control circuit; the method is characterized in that:

a timer movement and a timing assembly driven by the timer movement are also arranged in the shell;

the alarm clock is characterized in that an angle displacement sensing assembly which is electrically communicated with the main control circuit to set alarm time is further arranged in the shell, and an alarm time display structure matched with the angle displacement sensing assembly is arranged on the dial disc.

The angle displacement sensing assembly is arranged on the rear side of the dial and comprises a sensing circuit board which is fixed on the front shell and arranged in parallel with the dial and an angle circuit board which is arranged in parallel with the sensing circuit board and driven by the knob, and the sensing circuit board is matched with the angle circuit board in a sensing mode so as to output signals of the main control circuit.

The induction circuit board is fixed on the front side end face of the machine core cover plate, and the angle circuit board is driven by the knob to perform induction matching with the induction circuit board; the knob shaft inserted and matched with the knob is rotatably positioned at the central part of the front side end face of the machine core cover plate, and the connecting plate coaxially mounted on the knob shaft is rotatably positioned on the front side end face of the induction circuit board through the matched ball retaining structure, so that the angle circuit board coaxially mounted on the back face of the connecting plate and the induction circuit board are kept parallel to each other.

The ball holding structure includes: the ball grooves are arranged on the front side and the back side of the connecting plate and are regularly arranged, and a plurality of balls are arranged in each ball groove; the axes of all the balls arranged on the front surface or the back surface of the connecting plate are respectively positioned on the same circumferential surface, and the circumferential surface and the axis of the knob shaft are coaxially arranged.

The alarm time display structure comprises a pointer or color block display structure; the color block display structure comprises an access seam arranged in the center of the dial and an indicator plate which is driven by a knob to penetrate through the access seam and rotate between the back surface of the dial and the surface of the dial.

The indicating sheet is arranged in parallel to the dial surface and penetrates through the access seam to rotate from the dial back to the dial surface so as to represent the corresponding alarm time through the scales on the dial surface which are shielded.

The access seam extends from the central hole of the dial to the 0-scale part of the dial; the sheet-shaped dial face of the indicating sheet is arranged in parallel with the dial face and is also provided with a straight groove corresponding to the gap, the straight groove extends from the center of the indicating sheet to the edge of the indicating sheet along the radius direction and divides the indicating sheet into a starting end and a tail end.

The timer movement comprises a minute wheel component driven by the quartz movement and a running wheel driven by the minute wheel component; the timer movement is arranged in a positioning groove of the rear shell, and the front side of the timer movement is clamped, pressed and positioned by a movement cover plate; the minute wheel shaft is fixed in the front of the quartz movement shell, the minute wheel part is rotationally sleeved on the minute wheel shaft, and the driving tooth of the movement is meshed with the gear of the minute wheel part and drives the minute wheel part.

The main control circuit is respectively and electrically connected with a first display circuit, a second display circuit, a clock circuit, a timer circuit and an alarm circuit, the first display circuit is respectively and electrically connected with an angle sensing circuit, an alarm clock circuit, a display screen backlight circuit and a display screen, and the second display circuit is also electrically connected with the display screen; the power supply circuit is used for supplying power to the main control circuit, the first display circuit, the second display circuit and the angle sensing circuit respectively; the main control circuit and the first display circuit are respectively provided with a key for connecting with a power supply.

The invention has the beneficial effects that:

the invention has two functions of a timer and an alarm clock, thereby remarkably expanding the application range; adopt angular displacement sensing subassembly to set for the time of alarming sound, only need rotate once just can directly set for the time of alarming sound, not only easy operation is swift convenient, can guarantee regularly accurate, and the time of alarming sound shows striking, discerns directly perceived difficult mistake, gives the brand-new experience of consumer and feels moreover.

Drawings

Fig. 1 is a schematic view of a main view structure (displaying alarm clock time by using a color block display structure) in embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the right-side structure of fig. 1.

Fig. 3 is a schematic front view of embodiment 2 of the present invention.

Fig. 4 is a cross-sectional enlarged structural view of fig. 2.

Fig. 5 is an exploded view of an embodiment of the present invention.

Figure 6 is an exploded schematic view of the timepiece movement of figure 5.

Fig. 7 is an enlarged schematic view of a portion a in fig. 6.

Fig. 8 is a front view schematically showing the structure of the connection plate of fig. 5.

Fig. 9 is a rear view of the connection plate of fig. 5.

Fig. 10 is a schematic view of the connection relationship between the connection plate and the knob in fig. 5.

FIG. 11 is a schematic diagram showing the fitting relationship between the indicator piece and the dial in a color block display structure.

Fig. 12 is a circuit schematic diagram of embodiment 1 of the present invention.

Fig. 13 is a circuit configuration diagram of embodiment 1 of the present invention.

Fig. 14 is an enlarged schematic view of a printed circuit board of the signal pickup portion of the induction wiring board in embodiment 1.

Fig. 15 is a schematic view of an enlarged structure of a printed wiring of the signal collecting section of the angle wiring board in embodiment 1.

The labels in the figure are:

1. a knob; 1.1, a knob shaft; 2. a transparent lens; 3. a dial scale; 3.1, entering and exiting the seam; 4. an indicator sheet; 4.1, straight grooves; 5. a front housing; 6. a display screen; 7. a display screen support; 8. a connecting plate; 8.1, rolling balls; 8.2, a ball groove; 9. an angle circuit board; 10. an induction circuit board; 12. a main circuit board; 13. pressing a key; 14. an alarm element; 15. a rear housing; 16. a magnetic block; 17. a battery; 18. a timepiece movement; 19. a USB interface; 20. separating wheel shafts; 21. a minute wheel part; 22. a machine core splint; 23. a quartz movement; 24. a deck cover plate; 25. a wheel is walked; 25.1, a deflector rod; 26. a core board; 27 an elastic contact piece; 28. a switch post; 29. the core is the initiative tooth.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the embodiments illustrated in the drawings.

The alarm clock with timer function as shown in fig. 1 comprises a casing (formed by connecting a front casing 5 and a rear casing 15) equipped with a battery 17 and a main control circuit, a clock circuit and an alarm circuit (wherein the alarm element is preferably a buzzer) fixed at the rear part of the casing and electrically connected with the main control circuit, a dial 3 positioned at the front part of the casing, and a display screen (displaying the actual time of walking) positioned at the front part of the casing and electrically connected with the main control circuit; the dial front is also closed with a clear lens 2 to keep the inside of the housing clean.

The structure is similar to the existing quartz movement alarm clock.

The improvement of the invention is that:

a timer movement 18 and a timing assembly driven by the timer movement are also arranged in the shell;

as can be seen from fig. 5 and 6: the timer movement and the timing assembly are both in the prior art (see CN 106773609A); the timer movement comprises a quartz movement 23 generating a driving magnetic field (a main control chip sends out excitation current with set frequency, and a corresponding driving magnetic field is generated through a timing coil in the quartz movement), a movement driving tooth 29 driven by the driving magnetic field through a central output wheel assembly, and a minute wheel component 21 driven by the movement driving tooth; the timer movement is arranged in a positioning groove of the rear shell, and the front side of the timer movement is clamped, pressed and positioned by a movement cover plate 22; the minute wheel shaft 20 is fixed at the front part of the quartz movement shell, the minute wheel part 21 is rotationally sleeved on the minute wheel shaft, and the driving tooth of the movement extends out of the opening at the front part of the quartz movement shell and is meshed with the gear of the minute wheel part to drive the minute wheel part. The gear shaft of the minute wheel part passes through the holes in the center of the machine core splint 22 and the machine core cover plate 24 in sequence and then extends forwards (the gear shaft of the minute wheel part is connected with the gear through a certain friction force; when the timing time is set, the gear shaft is screwed but the gear does not rotate, the gear slides between the gear shaft and the gear; a movement clamping plate 22 is fixed on the quartz movement shell, and a timing assembly (the prior art) is arranged in the space between the movement clamping plate and the quartz movement shell; the timing assembly comprises an elastic contact 27 arranged on a circuit board of the movement, a switch post 28 and a passing wheel 25 driven by a minute wheel part, wherein a poking rod 25.1 is arranged on the passing wheel, and the poking rod forces the elastic contact to be bent and then to contact the switch post so as to output signals.

The alarm clock is characterized in that an angular displacement sensing assembly is further arranged in the shell, the angular displacement sensing assembly is electrically connected with the circuit board and used for setting alarm time (namely alarm time of the alarm clock), and an alarm time display structure corresponding to the alarm time in opposite directions is arranged on the dial.

As can be seen from fig. 4: the angular displacement sensing assembly is positioned at the rear side of the dial 3 (namely the right side direction of the figure 4), and comprises an induction circuit board 10 and an angle circuit board 9 which is in induction fit with the induction circuit board; the induction circuit board is provided with an angle sensing chip U4 and a signal acquisition part, and the induction circuit board is fixed on the front end face of the movement cover plate 24, and the center hole of the induction circuit board is coaxial with the dial (the rear side edge of the movement cover plate is propped against the front side edge of the movement clamp plate). The angle circuit board is fixed on the back surface (the surface opposite to the induction circuit board) of the connecting plate 8 and can be driven by the connecting plate to rotate around the axis of the dial; in the rotating process, the signal acquisition part of the angle circuit board is in capacitive sensing matching with the signal acquisition part of the sensing circuit board, so that the signal acquisition part of the sensing circuit board generates an angle signal in a sensing way every time the angle circuit board rotates by an angle; after the rotation is stopped, the finally generated angle signal is output to the angle sensing chip U4 as a corresponding alarm setting signal (eight signals including CL1 to CL8 are respectively output through eight contacts), and the U4 converts the angle signal and sets the angle signal as alarm time of an alarm clock or timer setting time (when the alarm time is up, the main circuit board starts an alarm element to make a sound). Obviously, the structure and the working principle of the angular displacement sensing assembly are the same as those of a conventional angular displacement sensor, and therefore, the detailed description is omitted.

The induction circuit board rotates for 360 degrees for 12 hours which is just the scale of the clock face; the angle is therefore exactly matched to the transition of the time scale: rotating 90 degrees to obtain 3 o 'clock of time scale, and rotating 180 degrees to obtain 6 o' clock of time scale; and so on.

See fig. 8-10; the connecting plate structure is similar to the sliding sheet disclosed in CN217932436U, and is a disc-shaped plate of the knob shaft 1.1 fixed at the axis position, and two ends of the knob shaft respectively extend out from the central position of the connecting plate to the end faces at two sides, one end is tightly matched with the gear shaft of the minute wheel component to drive the gear shaft of the minute wheel component to rotate, and the other end is a knob handle capable of being matched with the knob. The connecting plate is also the same as the sliding sheet, and the rotation stability of the connecting plate is kept through the matched ball retaining structure; the ball holding structure includes: a plurality of ball grooves 8.2 (four ball grooves are respectively arranged on each end face in fig. 8 and 9) which are arranged on the front and back surfaces of the connecting plate and are regularly arranged, and a plurality of balls 8.1 (three balls are respectively arranged in fig. 8 and 9) are arranged in each ball groove; the axes of all the balls arranged on the front surface or the back surface of the connecting plate are respectively positioned on the same circumferential surface, and the circumferential surface and the axis of the knob shaft are coaxially arranged. After the balls are installed, the balls can be exposed out of the ball grooves, so that the balls in the ball grooves on the front surface of the connecting plate are in abutting fit with a matching surface 5.1 (namely one surface of the contraction edge part facing the connecting plate) of the front shell; the balls in the ball grooves on the back of the connecting plate are abutted against the front surface of the outer edge part of the induction circuit board for rolling fit (the circuit on the induction circuit board is annular, the diameter of the circuit is smaller than the diameter of the circumference of the ball grooves, and the circuit is just avoided during rolling fit).

The timing alarm time display structure comprises a pointer or color block display structure. When the pointer is adopted, the pointer is only required to be fixed on the knob shaft (conventional structure).

The color lump display structure is the same as the structure disclosed in CN214586412U, and comprises an inlet and outlet slot 3.1 arranged on the dial plate along the radius direction, and an indicator plate 4 which is driven by a knob shaft and moves between the back surface of the dial plate and the surface of the dial plate through the inlet and outlet slot (the timing time can be set by rotating a knob handle).

The inlet and outlet seam extends from the center hole of the dial to the 0 scale part of the dial; the sheet-shaped and circular dial surface of the indicating sheet is arranged in parallel with the dial surface and is also provided with a straight groove 4.1 corresponding to the gap, the straight groove extends from the center of the indicating sheet to the edge of the indicating sheet along the radius direction and divides the indicating sheet into a starting end and a tail end; the tail end of the indicating sheet (the tail end is arranged at the right side of the straight groove in fig. 5) can be inserted into the back of the dial from the access seam, and the starting end part can be shielded on the surface of the dial, so that the alarm time can be represented by the scale pointed by the starting end. When the alarm clock is used, the starting end of the indicating sheet is driven by the knob shaft and rotates to the surface of the dial from the rear side of the dial through the access seam, and a certain scale on the dial pointed by the starting end is the set alarm time; for example (see fig. 11), the beginning edge of the indicator piece is aligned with the 3 'scale, indicating that the alarm time is 3 o' clock.

Referring to fig. 12: in this embodiment, a main control circuit including a main control chip U1, a clock circuit, a timer circuit, an alarm circuit, a second display circuit including a second display chip U3, and a power supply circuit with a battery are disposed on a main circuit board 12, which is mounted in a positioning seat of a rear case; the display screen circuit board arranged on the display screen support 7 is provided with a first display circuit for displaying a first display chip U2, an alarm clock circuit and a display screen backlight circuit, and the sensing circuit board is provided with an angle sensing circuit comprising an angle sensing chip U4 (the first display circuit, the second display circuit, the angle sensing circuit and the main control circuit can also be integrated on the main circuit board and then are arranged on the connecting board). The circuit connection relation is as follows: the main control circuit is respectively and electrically connected with the first display circuit, the second display circuit, the clock circuit, the alarm circuit (comprising an alarm element) and the timer circuit, the first display circuit is respectively and electrically connected with the angle sensing circuit, the alarm clock circuit, the display screen backlight circuit and the display screen (the angle sensing circuit, the alarm clock circuit, the display screen backlight circuit and the display screen are respectively and electrically connected through the main control circuit through the first display circuit), and the second display circuit is also electrically connected with the display screen; the power supply circuit is used for supplying power to the main control circuit, the first display circuit, the second display circuit and the angle sensing circuit respectively; the main control circuit is also electrically connected with the key S1, and the first display circuit is also electrically connected with the key S2 and the key S3.

The specific circuit is shown in fig. 13.

1. A main control circuit provided with a main control chip U1 and used for timing and alarming;

2. the first display circuit is provided with a first display chip U2, the second display circuit is provided with a second display chip U3, and the second display circuit is responsible for controlling the LCD display screen through the display screen backlight circuit and setting the time of the time-in-time display and the alarm time of the alarm clock and the timer;

3. and an angle sensing circuit provided with an angle sensing chip U4 is used for acquiring capacitance variable parameters between the angle circuit board signal acquisition part and the sensing circuit board signal acquisition part and converting angle values of the parameters into time values.

4. And the alarm clock circuit is responsible for setting alarm time.

5. And the clock circuit is responsible for ensuring the clock time-travelling precision and the clock correction.

Relation of circuit connection

U1 chip: the pin 1# is connected with two paths in parallel (one path is sequentially connected with a connecting resistor R1, a capacitor C4, a triode Q1, a resistor R2 and a diode D1, and the other path is sequentially connected with a resistor R3 and a key S2) and is connected with a working power supply VDD, so that the high-level time-out and time-recovery timer can stop the running time and can stop the alarm sound of a buzzer; the 2# pin and the 3# pin control the output of the 12# pin and the 13# pin through a key S1, and open or close a clock coil SZXQ; the pin 4 is connected with a positive power supply, the pin 11 is connected with a negative power supply, and a capacitor C3 is connected with the power supply in parallel to perform the functions of filtering, resisting interference and stabilizing; the pin 5 and the pin 6 are connected with a clock circuit (composed of an oscillator Y1 and capacitors C2 and C3 to ensure the clock timing precision); the 14# pin (terminal SI) is connected with the 8# pin of the chip U2 through an anti-interference resistor R13, and is connected with the 2# pin of the chip U3 through an anti-interference resistor R19 to carry out signal transmission; the pin 7# is connected with the pin 16# of the chip U2 through an anti-interference resistor R4 for signal transmission. The No. 8 pin and the No. 9 pin are respectively connected with an alarm circuit (comprising an alarm clock and a timer); wherein: the No. 8 pin is sequentially connected with the base electrode of a triode Q2 through a resistor R7, and the emitting electrode of the triode Q2 is connected with the emitting electrode of a triode Q3 and is grounded; the collector of the triode Q2 is connected with the key S4, two contacts of the S4 are respectively connected with the diode D4 and the series resistor R8 and the light-emitting diode D2, and then are connected with the working power supply VDD in parallel; the pin 9 is connected with the base electrode of a triode Q3 through a resistor R6, the collector electrode of the triode Q3 is connected with a contact of the S4, and meanwhile, two ends of the alarm component 14 are respectively connected with a working power supply and the collector electrode of the triode Q3. The No. 10 foot is connected with the ground through the resistor R4 switching key S3, the key S3 is disconnected, namely the timer works (the alarm clock stops), and the key S3 is closed, namely the alarm clock works (the timer stops). The pin 12 is connected with the pin 13 through a resistor R5 and a timing coil JSXQ, and provides high-frequency exciting current for the timing coil. The No. 10 foot is grounded or suspended through an anti-interference resistor R4 to select the use of a timer or an alarm clock.

U2 chip: the pin 2 is connected with a working power supply through a resistor R14, a triode Q4, a resistor R9 and an LED lamp D3, so that a signal is amplified through the triode Q4 and then a high level is output to the LED lamp D3 (the D3 is used as a backlight source of an LCD display screen) to control the LED lamp to emit light; the resistor R9 is used for adjusting the brightness of the LED display screen; and pull down resistor R12As a clock mode selection (12-hour on and 24-hour off). The pin 5 is connected with a positive power supply, the pin 12 is connected with a negative power supply, and the power supply is connected with a capacitor C5 for filtering. The 9 SEG pins are used as the output of the display pen segment and connected with 9 pins of the joint end J4 of the LCD display screen, wherein the SEG1 is correspondingly connected with the No. 5 pin of the joint end J4 of the display screen (LCD display screen), the SEG2 is correspondingly connected with the No. 6 pin-SEG 9 of the joint end J4 of the display screen (LCD display screen) and is correspondingly connected with the No. 13 pin of the joint end J4 of the LCD on the display screen. In addition, the power key S5 is connected with the 3# pin of the U2 chip through a resistor R10 and the power key S6 through a resistor R11 ^And a No. 4 pin for setting the alarm time of the clock circuit; the two keys are also connected with a pin 7# of the chip U1 through a pin 16# and an anti-interference resistor R4 to correct a clock circuit; the No. 16 pin is connected with the No. 7 pin of the chip U1 through an anti-interference resistor R4 to control the sound of the alarm clock; and when the actual time is consistent with the set alarm time, a signal is sent to the buzzer to make the buzzer send out alarm sound

U3 chip: the pin 1 is connected with a positive power supply, the pin 8 is connected with a negative power supply, and a capacitor C7 is connected in parallel with the power supply to perform filtering anti-interference stabilization; the pin No. 2 is connected with the pin No. 14 of the U1 and the pin No. 8 of the U2 through a resistor R19 and serves as a signal transmission end; the output of the backlight circuit of the display screen is taken as 4 connecting ends (COM 1 to COM 4) formed by connecting every two pins 3-7 in parallel through resistors R20 to R27 respectively, the output of the backlight circuit of the display screen is taken as 1# to 4# pins (a 3# pin resistor R26 and a 4# pin resistor R25 which are connected in parallel as an output end COM4 screen connecting joint J4, a 5# pin resistor R23 and a 4# pin resistor R24 which are connected in parallel as an output end COM3 screen connecting joint J3, a 5# pin resistor R22 and a 6# pin resistor R21 which are connected in parallel as an output end COM2 screen connecting joint J3, a 7# pin resistor R27 and a 6# pin resistor R20 which are connected in parallel as an output end COM1 screen connecting joint J3), when the connection, COM1 is correspondingly connected with 4# pin-and COM4 is correspondingly connected with 4# pin.

U4 chip: the pin 2 is the positive pole, the pin 15 is the negative pole and carries out the access of power, and the anti-interference stabilizing action of electric capacity C6 filtering is connected in parallel on the power. CL 1-CL 8 pins are used as capacitance signal acquisition input and are respectively connected with 8 pins (pin 1 to pin 8; pin 1 to pin 8 are omitted in FIG. 9) of the angle circuit board signal acquisition part CJB; the pin 13# is a pin 15# which is connected with the angle circuit board signal acquisition part CJB (connector pin) and is grounded through a resistor R18 and connected with a working power supply through a resistor R14; the pull-up resistor R15 and the pull-down resistor R14 perform voltage sensing (change along with the change of the capacitance) change, and the CL 1-CL 8 pin capacitance variable is subjected to digital-to-analog conversion by the chip U4, so that the time value of the angle value is calculated in real time. Pin 7 transmits the signal to pin 15 of the chip U2 through the anti-interference resistor R15, and pin 12 transmits the signal to pin 14 of the chip U2 through the anti-interference resistor R16. The clock circuit NZDL (conventional general circuit) is connected in series between pins 14# and 15# of the U2 chip and pins 7# and 12# of the U4 chip.

The working principle of the timer circuit is as follows: the timer is completed by a signal provided by the U1 chip; when the pin 2# of the U1 is grounded, the pin 12# and the pin 13# of the U1 output alternate voltages; the alternating voltage is connected with a timing coil of the quartz movement to generate a driving magnetic field to drive the gear to travel; in a time-running state, the key S2 can be operated, so that a high level enters a pin 1 of the U1 through the anti-interference resistor, and the output of the pin 12 and the pin 13 of the U1 is paused, so that a gear (a core driving tooth 30) of the quartz core can stop rotating; when the key S1 is operated, the pin 2# of the U1 is disconnected with the ground, when the pin 3# is grounded, the U1 stops supplying power to the pin 12# and the pin 13# and the pin 8# outputs high level to amplify voltage through the resistor R7 and the triode Q2 to give an alarm to the buzzer; the key S2 can be operated, so that the high level enters the pin 1# of the U1 through the anti-interference resistor R3, and the alarm sound at the moment can be turned off.

Angle sensing principle: the U4 chip is installed on the fixed induction circuit board and is coaxial and parallel to the angle circuit board, and the angle circuit board can rotate and keeps a certain gap with the induction circuit board, so that different angle signals are generated by using the change of capacitance between the angle circuit board and the induction circuit board. The printed circuit of the angle circuit board signal acquisition part is divided into 12 equal sectorial cells, and the angle of each cell is 30 degrees (1-12 shown in figure 15). In the printed circuit of the signal acquisition part of the induction circuit board, a circular A area is divided into 12 large areas (A1-A12 shown in figure 14) to correspond to 12 fan-shaped small areas of the angle circuit board, wherein each large area is divided into 8 small fan-shaped areas, and the corresponding angle of each small fan-shaped area is 30/8 degrees; the circular B area in the induction circuit board is connected to GND (ground) to prevent the capacitance from being interfered by surrounding signals when the capacitance is changed; the circular ring-shaped C area (the smallest ring) of the induction circuit board is connected to a 13# pin (CHECKIN pin) of the U4 chip; when the circuit board is rotated, the capacitance value variable is generated between a large interval and a small interval of the induction circuit board, the capacitance value variable is converted into a voltage variable through a pull-up resistor R17 and a pull-down resistor R18 which are connected with a 13# pin (CHECKIN pin) of a U4 chip, the voltage variable is converted into an angle value through digital-to-analog conversion of the chip U4, and the angle value is converted into a time value in real time, namely the alarm clock setting is completed; meanwhile, the 7# pin of the chip U4 transmits the signal to the 15# pin of the chip U2 through the anti-interference resistor R15 and the alarm clock circuit, the 12# pin of the chip U4 transmits the signal to the 14# pin of the chip U2 through the anti-interference resistor R16 and the alarm clock circuit, and the chip U2 and the chip U3 display the time set by the corresponding alarm clock on an LCD screen. When the time runs to the set alarm time and the time of the clock corresponds to each other, the chip U2 transmits a signal to the No. 7 pin of the chip U1 through the No. 16 pin, and the chip U1 outputs a high level through the No. 8 pin, amplifies the signal through the triode Q2 and outputs the amplified signal to the alarm element (buzzer) for alarming; when the buzzer alarms, a high level signal can be input into the No. 1 pin of the chip U1 through the key 2, and the buzzer can be temporarily closed.

As can be seen from the figure: the magnetic block 16 on the back of the casing can be used for fixing on any ferrous object; the case is provided with a USB interface 19.

The use mode of the invention is as follows: the starting key S2 starts a power supply to start up;

the key S3 (namely the key 13 arranged on the back of the shell) is pushed to be in an alarm clock gear, and the actual time of the alarm clock is displayed on the display screen; rotating the knob to drive the pointer or the indicating sheet to rotate on the dial, wherein the scale corresponding to the pointer or the indicating sheet is the alarm time set by the alarm clock; when the set time of the alarm clock is up, the alarm clock sends out the alarm sound for prompting.

Then, the key S3 is shifted to be in a gear position of the timer, then the knob is rotated to drive the pointer or the indicating sheet to rotate on the dial, the scale corresponding to the indicating sheet is the timing time set by the timer, and the display screen displays the timing time (from zero); as time goes by, the indicator piece slowly turns into the back of the dial; when the set time is up, the timer gives out prompt (sound or light flashing), the indicator is also turned to the back of the dial, and the time displayed on the display screen is the time used by the previous time.

Claims

1. A timer with alarm clock function, including the chassis equipped with battery (17) and master control circuit, fix in chassis and connect electrically clock circuit and alarm circuit of the said master control circuit, install on the dial (3) of the front part of chassis and connect electrically the display screen (6) of the said master control circuit; the method is characterized in that:

a timer movement (18) and a timing assembly driven by the timer movement are also arranged in the shell;

2. Timer with alarm clock function according to claim 1, characterized in that: the angular displacement sensing assembly is arranged on the rear side of the dial and comprises a sensing circuit board (10) which is fixed on a front shell (5) and is arranged in parallel with the dial and an angle circuit board (9) which is arranged in parallel with the sensing circuit board and is driven by a knob (1), and the sensing circuit board and the angle circuit board are matched in a sensing mode to output signals of the main control circuit.

3. Timer with alarm clock function according to claim 2, characterized in that: the induction circuit board is fixed on the front end face of the cover plate (24) of the machine core, and the angle circuit board is driven by the knob to be in induction fit with the induction circuit board; a knob shaft (1.1) which is inserted and matched with the knob is rotatably positioned at the central part of the front side end face of the core cover plate, and a connecting plate (8) which is coaxially arranged on the knob shaft is rotatably positioned on the front side end face of the induction circuit board through a matched ball retaining structure, so that the angle circuit board which is coaxially arranged on the back face of the connecting plate and the induction circuit board are kept parallel to each other.

4. A timepiece with alarm clock function according to claim 3, characterized in that: the ball holding structure includes: a plurality of ball grooves (8.2) which are arranged on the front surface and the back surface of the connecting plate and are regularly arranged, and a plurality of balls (8.1) are arranged in each ball groove; the axes of all the balls arranged on the front or the back of the connecting plate are respectively positioned on the same circumferential surface, and the circumferential surface and the axis of the knob shaft are coaxially arranged.

5. Timer with alarm clock function according to claim 4, characterized in that: the alarm time display structure comprises a pointer or color block display structure; the color block display structure comprises an access seam (3.1) arranged at the center of the dial and an indicator plate (4) which is driven by a knob to penetrate through the access seam to rotate between the back surface of the dial and the surface of the dial.

6. Timer with alarm clock function according to claim 5, characterized in that: the indicating sheet is arranged in parallel to the dial face of the dial, penetrates through the access seam and rotates from the back face of the dial to the surface of the dial, and accordingly the corresponding alarm time is represented through the scales on the surface of the dial which are shielded.

7. Timer with alarm clock function according to claim 6, characterized in that: the access seam extends from the central hole of the dial to the 0-scale part of the dial; the sheet-shaped dial face of the indicating sheet is arranged in parallel with the dial face and is also provided with a straight groove (4.1) corresponding to the gap, the straight groove extends from the center of the indicating sheet to the edge of the indicating sheet along the radius direction and divides the indicating sheet into a starting end and a tail end.

8. Timer with alarm clock function according to claim 7, characterized in that: the timer movement comprises a minute wheel component (21) driven by a quartz movement (23) and a running wheel (25) driven by the minute wheel component; the timer movement is arranged in a positioning groove of the rear shell, and the front side of the timer movement is clamped, pressed and positioned by a movement cover plate (22); the minute wheel part (21) is rotationally sleeved on a minute wheel shaft (20) at the front part of the quartz movement shell, and a movement driving tooth (30) is meshed with a gear of the minute wheel part and drives the minute wheel part.

9. Timer with alarm clock function according to claim 8, characterized in that:

the main control circuit is respectively and electrically connected with a first display circuit, a second display circuit, a clock circuit, a timer circuit and an alarm circuit, the first display circuit is respectively and electrically connected with an angle sensing circuit, an alarm clock circuit, a display screen backlight circuit and a display screen, and the second display circuit is also electrically connected with the display screen; the power supply circuit respectively supplies power to the main control circuit, the first display circuit, the second display circuit and the angle sensing circuit; the main control circuit and the first display circuit are also respectively provided with a key for connecting a power supply.