Barrel drum assembly, movement and timepiece

A technology of components and barrels, which is applied to clocks, movement sizes, mechanically driven clocks, etc., can solve problems such as decomposition and damage, and achieve the effect of inhibiting slippage and excellent maintainability

Active Publication Date: 2019-12-20
SEIKO INSTR INC
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the parts are securely fixed to each other in such a way that no slipp

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Barrel drum assembly, movement and timepiece
  • Barrel drum assembly, movement and timepiece
  • Barrel drum assembly, movement and timepiece

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0048] Generally, a mechanical body including a driving part of a timepiece is called a "movement". The state in which the dial and hands are attached to the movement and put into the watch case to form a finished product is called the "finished product" of the watch. Of the two sides of the bottom plate constituting the base plate of the timepiece, the side where the glass of the timepiece case exists (that is, the side where the dial exists) is referred to as the "back side" of the movement. In addition, the side where the case back of the timepiece case exists (that is, the side opposite to the dial) among both sides of the bottom plate is referred to as the "front side" of the movement.

[0049] In addition, in the present embodiment, the direction from the dial to the case back cover will be described as the upper side, and the opposite side will be described as the lower side.

[0050] figure 1 It is a plan view of the movement of 1st Embodiment.

[0051] Such as fig...

no. 2 approach

[0095] Next, refer to Figure 4 A second embodiment will be described. In the first embodiment, the drum arbor 60 is screwed into the barrel arbor 50 . On the other hand, the second embodiment is different from the first embodiment in that the drum arbor 160 is pressed into the arbor 150 . In addition, structures other than those described below are the same as those of the first embodiment.

[0096] Figure 4 It is a sectional view of the barrel unit of the second embodiment.

[0097] Such as Figure 4 As shown, instead of the internal thread 51 of the arbor 50 of the first embodiment, a press-fit surface 151 into which the drum arbor 160 is press-fit is formed on the inner peripheral surface of the arbor 150 of the second embodiment. On the outer peripheral surface of the drum axle 160 of the second embodiment, a press-fit surface 163 into which the arbor 150 is pressed is formed to replace the external thread 63 of the drum axle 60 of the first embodiment. Thus, the d...

no. 3 approach

[0102] Next, refer to Figure 5 A third embodiment will be described. The third embodiment is different from the first embodiment in that a pin 273 is inserted into the through hole 165 of the flange 64 of the drum axle 160 . In addition, structures other than those described below are the same as those of the second embodiment.

[0103] Figure 5 It is a sectional view of the barrel unit of the third embodiment.

[0104] Such as Figure 5 As shown, a pin 273 protruding upward is provided on the large steel wheel 227 . The pin 273 is press-fitted into a pin insertion hole 274 formed in the drum 227 . In addition, the pin 273 may be press-fitted into a recess formed on the upper surface of the drum 227 . In addition, the pin 273 may also be integrally formed with the drum 227 . The pin 273 is inserted into the through hole 165 of the flange 64 of the drum shaft 160 from below. As a result, the drum 227 and the drum shaft 160 engage with each other in the circumferential...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a barrel drum assembly, a movement and a timepiece of which maintenance is facilitated and which are thinner while being such that sliding of the ratchet is prevented. The barrel drum assembly (17) includes: a barrel (28) which contains a barrel spring (80) therein, to which one end of the barrel spring (80) is attached and which rotates on an axis (O1) by disarming the barrel spring (80); a hollow barrel shaft (50) which is arranged coaxially with the axis (O1) and carries the barrel (28) in rotation relative to same, and to which the other end of the barrel spring (80)is attached; a ratchet shaft (60) which includes an upper pivot (61) and a lower pivot (62), and which is inserted inside the barrel shaft (50) so as to be arranged coaxially with the axis (O1); a ratchet (27) arranged coaxially with the axis (O1) between the upper pivot (61) and the lower pivot (62); and a relative rotation prohibition part such as flats (57 and 72) preventing relative rotationbetween the barrel shaft (50) and the ratchet (27) by engagement.

Description

technical field [0001] The invention relates to a barrel assembly, a movement and a timepiece. Background technique [0002] Conventionally, the movement of a mechanical timepiece has a barrel, which accommodates a power spring; an arbor, which supports the barrel so as to be rotatable; Wind up the mainspring (for example, refer to Patent Document 1 and Patent Document 2). [0003] Patent Document 1 discloses a watch movement, which includes: a barrel arranged between the bottom plate and the barrel bridge; Locked on the inner peripheral surface of the barrel wheel; the bar shaft, which is supported by the bottom plate and the barrel bridge to rotate freely, and the inner peripheral end of the mainspring body is installed on the bar shaft; and the large steel wheel, which is separated by the barrel The opposite side of the box splint and the barrel wheel is installed on the protruding end of the bar shaft by the big steel wheel screw. [0004] In Patent Document 2, a barr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G04B3/00G04B3/04
CPCG04B1/16G04B33/14G04B3/00G04B3/041
Inventor 藤枝久伊东贤吾
Owner SEIKO INSTR INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap