Watch tooth dividing shaft

Abstract

The utility model discloses a watch tooth dividing shaft, which relates to the technical field of mechanical watches and comprises a central shaft, a minute wheel shaft sleeve and an hour wheel shaft sleeve, the minute wheel shaft sleeve is movably sleeved outside the central shaft, the hour wheel shaft sleeve is movably sleeved outside the minute wheel shaft sleeve, outer teeth are arranged at the top end of the minute wheel shaft sleeve, and the hour wheel shaft sleeve is sleeved outside the hour wheel shaft sleeve. According to the utility model, the structure of the meter body is improved, so that the pointer is in interference fit in a manner that the external gear is nested in the internal gear, and the line contact at the present stage is changed into surface contact, thereby improving the firmness degree of pointer installation; the pointer is still accurate in indication under the conditions of long-time use and frequent vibration of the meter body, and meanwhile, the integrated lubrication is adopted, so that an operator can lubricate the central shaft, the minute gear shaft and the hour gear shaft under the condition that the central shaft, the minute gear shaft and the hour gear shaft are not disassembled, and the later maintenance of the meter body is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical watch technical field especially, relates to a watch split tooth shaft. BACKGROUND

[0002] Mechanical watch can be usually divided into the following two kinds: manual winding and automatic winding watch. The power source of the two kinds of mechanical watches is the mainspring in the movement, which drives the gear and then the hands. The only difference is the way of power source. The manual winding watch uses the mainspring as power source by hand winding. The movement is thinner than the automatic winding watch, so the weight of the watch is relatively lighter. The automatic winding watch uses the power generated by the automatic rotating disc in the movement to drive the mainspring. However, the thickness of the manual winding watch is smaller than that of the automatic winding watch.

[0003] The center part of the mechanical watch is composed of a hollow center shaft, a split gear shaft and a time gear shaft. The top of the split gear shaft and the time gear shaft is fixed with a minute hand and a hour hand respectively. The minute hand and the hour hand are directly fitted on the outside of the split gear shaft and the time gear shaft by friction force at present. Since it is linear contact, the minute hand and the hour hand will be deviated and loose in the case of long time use and frequent vibration of the watch body, which leads to inaccurate indication of the hands. In addition, the center shaft, the split gear shaft and the time gear shaft need to be lubricated by professional personnel after a period of use, otherwise the friction between them will cause irreversible wear of the parts. SUMMARY

[0004] The utility model discloses a split tooth shaft of watch to solve the technical problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A split tooth shaft of watch, comprising: a center shaft, a split gear shaft sleeve and a time gear shaft sleeve, the split gear shaft sleeve is movably fitted on the outside of the center shaft, the time gear shaft sleeve is movably fitted on the outside of the split gear shaft sleeve, the top of the split gear shaft sleeve is provided with external teeth, the top of the split gear shaft sleeve is fitted with a minute hand, the top of the time gear shaft sleeve is provided with external teeth, and the top of the time gear shaft sleeve is fitted with a hour hand.

[0007] The utility model further sets up that the inside of the minute hand is provided with internal teeth, and the internal teeth of the minute hand and the external teeth of the split gear shaft sleeve are fitted.

[0008] The utility model further sets up that the inside of the hour hand is provided with internal teeth, and the internal teeth of the hour hand and the external teeth of the time gear shaft sleeve are fitted.

[0009] The utility model further sets up three lubricating ring grooves outside the center shaft, one lubricating long groove outside the center shaft, and the lubricating long groove passes through the three lubricating ring grooves.

[0010] The utility model further sets up three lubricating ring grooves outside the center shaft, one lubricating long groove outside the center shaft, and the lubricating long groove passes through the three lubricating ring grooves.

[0011] The utility model further sets up three lubricating ring grooves outside the center shaft, one lubricating long groove outside the center shaft, and the lubricating long groove passes through the three lubricating ring grooves.

[0012] The utility model further sets up three lubricating ring grooves outside the center shaft, one lubricating long groove outside the center shaft, and the lubricating long groove passes through the three lubricating ring grooves.

[0013] The utility model discloses the beneficial effect is: the utility model discloses the structure of the table body is improved, and the pointer is nested with the external gear in the internal gear and is in interference fit, changes from the line contact of present stage to the surface contact, improves the firm degree of pointer installation, and under the condition that the table body often vibrates in long -time use, the pointer is still accurate to instruct, and simultaneously, the utility model discloses integral type lubrication, can make the operator without disassembling center shaft, split gear shaft, hour gear shaft to lubricate three, and the post -maintenance of table body is convenient. ACCURACY

[0014] Figure 1 The utility model discloses a kind of overall structure schematic diagram of watch split gear shaft is proposed;

[0015] Figure 2 The utility model discloses a kind of overall structure schematic diagram of watch split gear shaft is proposed;

[0016] Figure 3 The utility model discloses a kind of overall structure schematic diagram of watch split gear shaft is proposed;

[0017] Figure 4 The utility model discloses a kind of overall structure schematic diagram of watch split gear shaft is proposed;

[0018] In the drawing: 1, center shaft;2, split gear shaft sleeve;3, hour gear sleeve;4, minute hand;5, hour hand;6, lubricating ring groove;7, lubricating long groove. SPECIFIC IMPLEMENTATION

[0019] The technical scheme of the patent is further explained in detail in combination with specific implementation.

[0020] Embodiments of the present patent are described below in detail with reference to the accompanying drawings, wherein the same or similar elements or elements having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present patent, and cannot be understood as a limitation on the present patent.

[0021] In the description of the present patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present patent and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present patent.

[0022] In the description of the present patent, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0023] Referring to Figures 1-4 A watch pinion shaft, comprising: a center shaft 1, a minute shaft sleeve 2 and a hour shaft sleeve 3, the minute shaft sleeve 2 is movably sleeved outside the center shaft 1, the hour shaft sleeve 3 is movably sleeved outside the minute shaft sleeve 2, the top end of the minute shaft sleeve 2 is provided with external teeth, the top end of the minute shaft sleeve 2 is sleeved with a minute hand 4, the top end of the hour shaft sleeve 3 is provided with external teeth, the top end of the hour shaft sleeve 3 is sleeved with a hour hand 5, the inside of the minute hand 4 is provided with internal teeth, and the internal teeth of the minute hand 4 and the external teeth of the minute shaft sleeve 2 are sleeved, the inside of the hour hand 5 is provided with internal teeth, and the internal teeth of the hour hand 5 and the external teeth of the hour shaft sleeve 3 are sleeved, the outside of the center shaft 1 is provided with three lubricating ring grooves 6, the outside of the center shaft 1 is provided with one lubricating long groove 7, and the lubricating long groove 7 passes through the three lubricating ring grooves 6, the outside of the minute shaft sleeve 2 is provided with three lubricating ring grooves 6, the outside of the minute shaft sleeve 2 is provided with one lubricating long groove 7, and the lubricating long groove 7 passes through the three lubricating ring grooves 6, the minute hand 4 and the minute shaft sleeve 2 adopt interference fit, and the hour hand 5 and the hour shaft sleeve 3 adopt interference fit.

[0024] Working principle: in the production installation time, the operator first lubricating ring groove 6 and lubricating long groove 7 in the center shaft 1 coating lubricating oil, and the pinion shaft sleeve 2 installed outside the center shaft 1, then the pinion shaft sleeve 2 lubricating ring groove 6 and lubricating long groove 7 in the coating lubricating oil, then the hour wheel shaft sleeve 3 installed outside the pinion shaft sleeve 2, finally the hour hand 5 installed at the top of the hour wheel shaft sleeve 3, finally the minute hand 4 installed at the top of the pinion shaft sleeve 2.

[0025] In the later maintenance, the operator only needs to take down the minute hand 4, hour hand 5 respectively, with lubricating oil injector respectively to the lubricating long groove 7 of the center shaft 1, lubricating long groove 7 of the pinion shaft sleeve 2 injection lubricating oil to complete the maintenance of the center part, lubricating oil will flow from the lubricating long groove 7 to three lubricating ring groove 6.

[0026] The above, only for the preferred specific embodiments of the present application, but the scope of the present application is not limited to this, any skilled in the art of the technical personnel in the present application disclosed in the technical range, according to the technical scheme of the present application and the utility model concept to be equivalent to replace or change, should be covered in the scope of the present application.

Claims

1. A watch gear pinion, comprising: A central shaft (1), a wheel bushing (2), and an hour wheel bushing (3), wherein the wheel bushing (2) is movably fitted outside the central shaft (1), and the hour wheel bushing (3) is movably fitted outside the wheel bushing (2), characterized in that the top end of the wheel bushing (2) is provided with external teeth, the top end of the wheel bushing (2) is fitted with a minute hand (4), the top end of the hour wheel bushing (3) is provided with external teeth, and the top end of the hour wheel bushing (3) is fitted with an hour hand (5).

2. The watch gear shaft according to claim 1, characterized in that, The inner teeth of the dividing needle (4) are provided, and the inner teeth of the dividing needle (4) are engaged with the outer teeth of the dividing wheel bushing (2).

3. A watch gear shaft according to claim 1, characterized in that, The clock hand (5) has internal teeth, and the internal teeth of the clock hand (5) engage with the external teeth of the clock wheel bushing (3).

4. A watch gear shaft according to claim 1, characterized in that, The central shaft (1) has three lubrication ring grooves (6) on its outside and a lubrication long groove (7) on its outside, and the lubrication long groove (7) passes through the three lubrication ring grooves (6).

5. A watch gear shaft according to claim 1, characterized in that, The outer side of the wheel bushing (2) is provided with three lubrication ring grooves (6) and a lubrication long groove (7) is provided on the outer side of the wheel bushing (2), and the lubrication long groove (7) passes through the three lubrication ring grooves (6).

6. A watch gear shaft according to claim 1, characterized in that, The minute hand (4) and the minute wheel bushing (2) are interference fit.

7. A watch gear shaft according to claim 1, characterized in that, The hour hand (5) and the hour wheel bushing (3) are fitted with an interference fit.

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