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Gear trains, movements and clocks

A technology of gear train and movement, applied in the direction of gear mechanism, clock, mechanically driven clock, etc., can solve the problems of reduced assembly, not inserted, unable to visually see the position of the transmission gear or shaft support hole pointer gear, etc. , to achieve the effect of restraining sway, shortening the shaft length, and restraining the deviation of needle movement

Active Publication Date: 2018-12-07
SEIKO INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in the structure of the above-mentioned Patent Document 1, when the shaft portion is shortened, before the wheel train support is assembled to the base plate (before the shaft portion is inserted into the shaft support hole of the wheel train support), the wheel train support The part may come into contact with the bent part of the pointer restraining spring, so that the pointer gear is pressed to the train support part side
As a result, the meshing of the pointer gear and the transmission gear may be disengaged, or the shaft portion of the pointer gear may not be inserted into the shaft support hole of the gear train support, etc., and the assembly property may be reduced.
[0015] In particular, in the structure of Patent Document 1, when the gear train support is assembled, the pointer gear and the transmission gear are covered by the train train support, so the position of the transmission gear or the shaft support hole relative to the pointer gear cannot be visually seen.
In this respect, it is also a major cause of the decrease in assemblability.

Method used

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  • Gear trains, movements and clocks
  • Gear trains, movements and clocks
  • Gear trains, movements and clocks

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0052] [Watch]

[0053] The mechanical body that contains the driving part of the clock is generally called the "movement." The state where the dial and hands are mounted on the movement, and the finished product is called the "complete" of the timepiece.

[0054] Among the two sides of the bottom plate constituting the timepiece substrate, the side having the glass of the timepiece case, that is, the side having the dial is referred to as the "back side" of the movement. In addition, the side of the case back cover with the watch case on both sides of the bottom plate, that is, the side opposite to the dial is referred to as the "front side" of the movement.

[0055] figure 1 It is an external view showing the timepiece 1 according to the embodiment of the present invention.

[0056] Such as figure 1 As shown, the complete body of the timepiece 1 has a movement 100, a dial 11, and hands 12-14 inside a timepiece case 3 composed of a case back cover (not shown) and glass 2.

[0057] Th...

no. 2 Embodiment approach

[0118] Next, the second embodiment of the present invention will be described. Figure 8 It is a partial cross-sectional view showing the movement 110 of the second embodiment of the present invention. In the needle movement deviation suppression mechanism 131 of the present embodiment, the difference from the above-mentioned first embodiment is that a pressing force applying portion 190 is formed on the back object pressing member (内物压さえ) 130. In addition, in the following description, detailed descriptions of the same structural parts as those of the first embodiment will be omitted, and only different parts will be described.

[0119] Such as Figure 8 As shown, in the movement 110 of the present embodiment, the movement deviation suppression mechanism 131 has a pressing member 170, a support portion 180, and a pressing force applying portion 190.

[0120] The support part 180 has a support seat 181 formed on the upper surface of the bottom plate 20 and a guide pin 182 which is ...

no. 3 Embodiment approach

[0135] Next, a third embodiment of the present invention will be described. In the needle movement deviation suppression mechanism 231 of this embodiment, the difference from the above-mentioned embodiment is that the pressing force applying portion 290 is formed on the bottom plate 20. In addition, in the following description, the detailed description of the same structural parts as the first and second embodiments will be omitted, and only the different parts will be described. Picture 10 It is a cross-sectional view showing the movement 210 of the third embodiment. Picture 11 It is a perspective view of the movement 210 viewed from the front side.

[0136] Such as Picture 10 , Picture 11 As shown, in the movement 210 of this embodiment, the support portion 280 of the movement deviation suppression mechanism 231 has a support base 81, a guide pin 282 erected from the support base 81, and a support base 81 formed on the outer peripheral side of the support base 81. Press th...

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Abstract

The invention provides a gear mechanism, a movement and a clock which can realize thinness and improve assembling performance under the condition of restraining swinging and pointer deviation caused by gear inertia. The gear mechanism is characterized by comprising a No.4 wheel (41), wherein two end portions of a wheel shaft (60) can both be supported by a bottom plate (20) and a gear support piece (29) in a mode of rotating relative to the bottom plate (20) and the gear support piece (29); a press component (70) maintained to press the lower end surface (62b) of the No.4 wheel (41); and a press applying portion (90) pressing the press component (70) towards the lower end surface (62b) of a No.4 gear (62), and applying press to the press component (70).

Description

Technical field [0001] The invention relates to a gear train mechanism, a movement and a clock. Background technique [0002] A gap that is desired to be provided in the rotation direction, that is, a so-called "backlash", is provided between the gears that are transmitted power from the power source and meshed to rotate. In addition, the backlash appropriately suppresses the friction between the tooth surfaces of the meshed gears, so the gears rotate. [0003] In this way, backlash is indispensable for the mutual rotation of gears. However, sometimes there are cases where the gears rotate unexpectedly within the range of the backlash due to the gap set as the backlash, resulting in so-called "wobble ( がたつき)". [0004] Due to this "wobble", for example, a phenomenon called "wobble" in which the second hand rotates in a clockwise or counterclockwise direction unintentionally occurs at the fourth wheel on which the second hand is attached. [0005] Specifically, as follows, at the four...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04B13/00G04B35/00
Inventor 藤原俊行河田正幸小棚木进佐藤贤
Owner SEIKO INSTR INC