CN2783380Y

CN2783380Y - Movement for three-pointer big clock

Info

Publication number: CN2783380Y
Application number: CN 200420098676
Authority: CN
Inventors: 张模福
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-15
Filing date: 2004-12-15
Publication date: 2006-05-24
Anticipated expiration: 2014-12-15

Abstract

The utility model discloses a clock movement for a three-hand big clock, which comprises a machine casing, wherein the interior of the machine casing is provided with a second hand axis, a minute hand axis, an hour hand axis and a correspondingly gear transmission wheel train. The utility model is characterized in that the outer side of the machine casing is provided with two stepping motors; the inner of the machine casing is provided with two worm gear pairs; the two stepping motors are respectively connected with endless screws of the two worm gear pairs; the two worm gear pairs are respectively meshed with a second hand axis gear transmission wheel train and a minute and hour hand axis gear transmission wheel train through gears. The utility model adopts dual motors and dual worm gear pairs which respectively drive the second hand axis and the minute and hour hand axis, thus, two input ends are formed, each drive mechanism can be adjusted independently, and timing speeds can be improved more than 30 times; compared with a traditional multistage straight gear wheel train, and driving structure is simplified to more than 30 percents. The utility model has the advantages of steady run, no noise, self-locking function, low cost and long service life, and can ensure accumulated errors of timing precision to be zero.

Description

The big clock movement of a kind of three pins

Technical field

The utility model relates to a kind of watch and clock movement, the big clock movement of specifically a kind of three pins.

Background technology

The movement that uses is the transmission of single motor-driven spur gear train interlock at present, and shortcoming is that its running is discontinuous, the shake operation, not steady, noise is big, does not have sealing, and is unlubricated, and the train wearing and tearing are big, and timing is slow, does not have auto-lock function, whole cassette mechanism structure complexity, cost height.

Summary of the invention

The purpose of this utility model is intended to overcome the defective that prior art exists, and a kind of stable drive is provided, but continuous motion, low noise, timing is fast, and has auto-lock function, and is simple in structure, the big clock movement of a kind of three pins with low cost.

The technical solution of the utility model is: the big clock movement of a kind of three pins, it has a casing, be provided with second hand axle, minute hand shaft and corresponding gear drive train in the casing, characteristics are, be provided with two stepper motors in the outside of casing, in casing, be provided with two worm gear pairs of forming by worm screw, worm gear, two stepper motors are connected with the worm screw of two worm gear pairs respectively, constituting two input ends respectively is first order reduction gearing mechanism, and two worm gear pairs are meshed with second hand axle gear drive train and branch hour hand axle gear wheel system respectively by gear.

The utility model has following good effect compared with the prior art: one, in order to solve the drive mechanism pass is the contradiction of importing low speed output at a high speed, it is first order transmission that the utility model has been selected the bigger worm gear pair structure of ratio of gear for use, having simplified drive mechanism than traditional multistage straight-tooth train reaches more than 30%, optimized drive connection, and because worm gear pair is a kind of inclined-plane motion principle, so stability of rotation, noiseless, can drive the running that the clock pin reaches quiet scan-type, its auto-lock function that has can also make the not resilience of clock pin, guarantees that it is zero that timekeeping performance reaches cumulative errors; Its two, the utility model adopts bi-motor, two worm gear pair to drive second hand axle respectively and divides hour hand axle, constitutes two input ends, each driving mechanism can independently be adjusted, timing makes things convenient for, timing speed improves more than 30 times.

Below in conjunction with the drawings and specific embodiments the utility model is at length explained.

Description of drawings

Fig. 1-structural representation of the present utility model;

The left view of Fig. 2-Fig. 1;

The right view of Fig. 3-Fig. 1;

The A-A of Fig. 4-Fig. 1 is to cut-open view.

The explanation of accompanying drawing drawing:

1 casing, 2 casings, 3 casings, 4 stepper motors, 5 stepper motors, 6 worm screws, 7 worm screws, 8 bearings, 9 worm gears, 10 worm gears, 11 tooth axles, 12 gears, 13 gears, 14 second hand axles, 15 minute hand shafts, 16 hour hand axles, 17 lubricating fluids.

Embodiment

With reference to figure 1-Fig. 4, it adopts casing 1, casing 2, casing 3 to be connected and fixed closed rectangular case of formation, is provided with second hand axle 14, minute hand shaft 15, hour hand axle 16 in the housing, and corresponding gear drive train; In housing, be provided with two worm gear pairs of forming by worm screw 6 and worm gear 9, worm screw 7 and worm gear 10 respectively, in order to simplify drive mechanism and to reduce cost, worm gear 9 and worm gear 10 can be installed on the same tooth axle 11, wherein, worm gear 9 slides on tooth axle 11 by being installed in its inner bearing holder (housing, cover), worm gear 10 cooperates by key fixedlys connected with tooth axle 11, on worm gear 9, fixedly install gear 12, gear 12 is meshed with the gear drive train of second hand axle, be fixed with gear 13 on tooth axle 11, gear 13 is meshed with the gear drive train of dividing hour hand axle; Stepper motor 4, stepper motor 5 are set respectively in the housing both sides, and an end and the stepper motor 4 of worm screw 6 are screwed, and the other end is fixed on the movement housing by bearing 8, and worm screw 7 can be adopted in the same way and be connected with stepper motor 5 and movement housing.

Principle of work

During work, adopt chip processor control step motor 4,5, rotating band moving gear 12, gear 13 by worm gear 9,10 order about respectively organizes the train running, and the differential operation that realizes second hand axle and divide hour hand axle drives clock pin instruction time.

In addition,, can fill lubricating fluid 17, both can reduce the wearing and tearing between each parts, can play cooling effect again, prolong the serviceable life of movement greatly in the bottom of closure casing in order to guarantee normal operation.

Claims

1, the big clock movement of a kind of three pins, it comprises casing, be provided with second hand axle (14) in the casing, minute hand shaft (15), hour hand axle (16) and corresponding gear drive train, it is characterized in that, be provided with stepper motor (4) in the outside of casing, (5), in casing, be provided with two respectively by worm screw (6) and worm gear (9), the worm gear pair that worm screw (7) and worm gear (10) are formed, stepper motor (4), (5) respectively with worm screw (6), (7) connect, constituting two input ends respectively is first order reduction gearing mechanism, and two worm gear pairs are meshed with second hand axle gear drive train and branch hour hand axle gear wheel system respectively by gear.

2, according to the big clock movement of described a kind of three pins of claim 1, it is characterized in that worm gear (9), (10) are located on the same tooth axle (11), worm gear (9) is gone up at tooth axle (11) and is slided, and worm gear (10) is fixed on the tooth axle (11).

According to the big clock movement of described a kind of three pins of claim 1, it is characterized in that 3, described casing is the combined closing formula structure that is made of casing (1), (2), (3).