JPH0548145Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clock with a second hand called a skeleton. The purpose of the design is to emphasize the skeleton even though it has a second hand. The gist of the invention is a structure that connects the second hand to the body of the second hand wheel, bypassing the holding member that prevents the second hand wheel from coming off. This will be explained using drawings.

FIG. 1 is a sectional view of a first embodiment of the present invention, and FIG. 2 is a partial sectional view of the second embodiment.

1 is a seconds gear, 2 is a seconds pinion, and when assembled, 1 and 2 form a seconds hand wheel. 3 is a minute transmission gear meshing with second gear 1, 4 is a minute transmission pinion, and 3 and 4 are assembled to form a minute transmission. 5 is a main plate, 6 is a shaft, and 7 is a transmission shaft. 6 and 7 are caulked to the main plate 5 and stand upright. 5, 6, and 7 may be integrally molded from resin. The second kana 2 has a through hole 8. The through hole 8 is fitted into the shaft 6, and the second hand wheel is rotatably supported on the shaft 6. When the second hand wheel is assembled, the end 9 of the shaft 6 projects above the through hole 8. Reference numeral 10 denotes a holding member, which in this embodiment is ring-shaped. The holding member 10 is press-fitted into the end 9 of the shaft. The second hand wheel is prevented from coming off upward by the holding member 10. A holding member 11 is similarly press-fitted into the split transmission to prevent it from coming off. The holding members 10 and 11 are holding means, and may be screwed or expanded at the end of the shaft.
The presser members 10 and 11 are separated from each other. If this is a connected receiving member, it will interfere with observation from above (in the direction of arrow 12), and the essence of the skeleton, which is to directly see the gear itself, will be missed. It is preferable for the skeleton not to connect the holding members. The present invention attempts to attach a second hand to meet the requirements of this skeleton. 13 is a second hand, 14 is a hook, and 15 is a second hand holding member. 16 is a pipe of the second hand holding member 15. Reference numeral 17 denotes a fitting portion provided on the end face of the second pinion 2, which has a cylindrical shape. The inner diameter of the pipe 16 is press-fitted into the diameter of the fitting part 17. The inner diameter of the pipe 16 is larger than the outer diameter of the holding member 10, so that the two do not interfere with each other. The second hand holding member 15 rotates integrally with the second hand wheel. 18 is the second hand holding member 1
A hook 14 having a second hand 13 is attached to the tip of the second hand 5. In this state, a skeleton is provided in which the second gear 1 can be seen directly behind the second hand 13. 1
9 is a second plate ring. 20 is a holding plate for the seconds plate ring 19. Although 19 and 20 are not shown,
It is configured to be held stationary together with the base plate 5. The second plate ring 19 has a scale so that the position of the second hand 13 can be read. 21 is a hole from which the second gear 1 can also be seen.

FIG. 2 shows a configuration in which the number of parts is reduced. 22 is a second hand wheel with a pinion integrally molded. 23 is an integrated second hand. The shaft 6, end portion 9, and holding member 10 are the same as those described in FIG. The second hand wheel 22 is assembled to the shaft 6 and is stopped by a holding member 10. 24 is a pipe that stands up integrally from the second hand wheel 22. The inner diameter of the pipe forms a fitting portion 25. The dimensions of the fitting portion 25 are larger than the outer diameter of the holding member 10 and do not come into contact with each other. 26 is second hand 2
3 and its diameter is pushed into the inner diameter of the pipe which is the fitting part 25. The second hand 23 is the second hand wheel 2
Rotates as one with 2. 25 and 26 may be fitted in the opposite manner. Since the gist of the invention is to connect the second hand to the body of the second hand wheel by bypassing the presser member 10, any method including adhesion may be used for the connection.

With the above invention, it has become possible to provide a timepiece with a second hand that has good skeleton properties.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a second embodiment of the present invention. 1...Second gear, 5...Main plate, 6...Shaft, 10...
... Pressing member, 13, 23 ... Second hand, 15 ... Second hand holding member, 22 ... Second hand wheel, 17, 25 ... Fitting portion.

Claims (1)

[Scope of utility model registration request] A rotating second hand wheel having a shaft that stands upright on the main plate, a through hole that fits into the shaft, and a presser that is fixed to the end of the shaft to prevent the second hand wheel from coming off after it is assembled to the shaft. The second hand wheel has a fitting portion larger in size than the presser member, and the second hand or the member for holding the second hand is press-fitted into the fitting portion, so that the second hand wheel has a fitting portion larger in size than the presser member, and the second hand or the member to hold the second hand is press-fitted into the fitting portion. A timepiece with a second hand, characterized in that it is supported by the second hand wheel without touching any parts.