JP4298328B2 - Cell phone clock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable timepiece having an improved structure for attaching a winding stem pipe to a case.
[0002]
[Prior art]
Generally, a winding stem pipe that penetrates a pipe mounting hole of a portable watch case is fixed to the case by brazing (see, for example, Patent Document 1).
[0003]
In addition, there is a type in which a winding stem pipe penetrating through a pipe attachment hole of the cylinder is fixed to the cylinder with an adhesive (for example, see Patent Document 2).
[0004]
In addition, a winding stem pipe with a hook is inserted into the stepped pipe mounting hole from the inside of the trunk, and a waterproof packing is provided in the large diameter hole of the pipe mounting hole, and a waterproof fixing ring that closes the large diameter hole is attached to the winding stem pipe. There is also a type in which the winding stem pipe is fixed to the barrel by press-fitting or screwing to the outer periphery and sandwiching the barrel between the collar portion of the winding stem pipe and the waterproof fixing ring (see, for example, Patent Document 2).
[0005]
In addition to this, in a portable timepiece having a screw lock structure, a male screw portion different from the male screw portion to which the crown is screwed is provided in an intermediate portion in the axial direction of the winding stem pipe, and the other male screw portion is provided on the trunk pipe. In addition to being screwed into the mounting hole, a waterproof packing is sandwiched between the barrel and the winding stem pipe along with this screwing.
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 57-46181 (right column on page 1, lines 9 to 10, FIGS. 1 to 2)
[0007]
[Patent Document 2]
Japanese Patent Laid-Open No. 7-287077 (paragraphs 0002, 0003, 0008, FIG. 1, FIG. 4, FIG. 5)
[0008]
[Problems to be solved by the invention]
When maintaining a portable watch, the outer surface of the case is often polished. In this case, in the configuration in which the winding stem pipe is fixed to the trunk by brazing or bonding as described in paragraphs 0002 and 4 of Patent Document 1 and Patent Document 2, the winding stem pipe protrudes outside the trunk. The outer end portion of the case serves as an obstacle to polishing the outer surface of the case.
[0009]
Furthermore, in the configuration in which the winding stem pipe is fixed to the body by brazing or bonding, if it is necessary to replace the winding stem pipe for some reason, it is not possible to replace the parts of the winding stem pipe alone. As a result, the watch exterior assembly including the case has to be replaced, and there is a need for improvement.
[0010]
The configurations of paragraph 0003, paragraph 0008, FIG. 1 and FIG. 5 of Patent Document 2 are intended to solve the problem of improving the reliability of the fixing force of the winding stem pipe to the barrel and preventing it from coming off, so the winding stem pipe is removed from the barrel. There is no teaching.
[0011]
Even if the winding stem pipe can be removed, it is necessary to pull out the winding stem pipe to the inner side of the pipe because the hook of this pipe is on the inner side. Moreover, the movement of the winding stem pipe with respect to the pipe mounting hole is often awkward due to the generation of metal oxide or the like between the pipe mounting hole of the trunk and the winding stem pipe with use over time. For this reason, it takes time and effort to remove the winding stem pipe from the trunk. In addition, even in a configuration in which the winding stem pipe is screwed into the trunk, it is easy to take time and effort to remove the winding stem pipe from the same circumstances.
[0012]
Also, for example, a crown is screwed into the outer end of the winding stem pipe, and this crown is screw-locked (screw engagement is used to prevent the crown from being rotated inadvertently while carrying the watch). In the case of a portable watch, the function of the screw lock may be deteriorated due to wear due to aging. When such a situation occurs, in a portable watch in which the winding stem pipe is fixed to the case by brazing, parts of the winding stem pipe alone cannot be replaced, and the watch exterior assembly including the case must be replaced. ing.
[0013]
On the other hand, in a portable timepiece in which the winding stem pipe is screwed into the case, it is considered that, in principle, it is possible to replace the parts of the winding stem pipe alone. However, every time the crown is screwed into or removed from the winding stem pipe, a rotational force acts on the winding stem pipe.
[0014]
As a countermeasure, an adhesive may be filled in the threaded portion between the winding stem pipe and the trunk. In such a case, it is difficult to remove the winding stem pipe from the trunk, and in practice, it is impossible to replace the components of the winding stem pipe alone. For this reason, when the screw lock function is lowered, the watch exterior assembly including the trunk is forced to be replaced, and the winding stem pipe becomes an obstacle when the outer surface of the trunk around the winding stem pipe is polished.
[0015]
Furthermore, in the configuration in which the winding stem pipe is screwed into the barrel, it is necessary to process the male thread portion with respect to the winding stem pipe and the processing of the female thread portion with respect to the pipe mounting hole of the barrel, but since these threading operations are relatively troublesome, High cost. In addition, as the winding stem pipe is screwed in, this pipe is stressed, so that the winding stem pipe needs to have strength to withstand the stress. As a result, there are many design restrictions such as the material and thickness of the winding stem pipe.
[0016]
The problem to be solved by the present invention is to provide a portable timepiece having excellent maintenance around the winding stem pipe.
[0017]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention has a stepped structure in which the pipe mounting hole of the trunk has an elastic body accommodating hole that opens to the outer surface of the trunk. A winding stem pipe inserted into the pipe mounting hole is inserted into the pipe mounting hole so that it can be inserted into and removed from the outer side of the barrel, and an insertion portion having an inner end located on the inner side of the barrel is disposed on the outer side of the barrel. It is set as the structure which has the trunk | drum outer side edge part and the collar part provided between these. Further, the elastic body is sandwiched between the inner surface of the elastic body housing hole and the flange portion, and the winding stem pipe is urged toward the outer side by the elastic body, and the engaging groove at the inner side end portion The pipe stopper is detachably engaged to prevent the winding stem pipe from coming off.
[0018]
In the present invention, the trunk and the winding stem pipe can be suitably made of a material such as a metal such as stainless steel, but are not limited thereto and can be made of a synthetic resin. In the present invention, the insertion portion of the winding stem pipe is “freely inserted” into the pipe mounting hole when the insertion portion is inserted into the pipe mounting hole in a non-press-fit state, and from the outer side of the insertion portion to the mounting hole. It indicates the insertion state that allows the insertion and removal. In the inserted state, it is preferable to provide a slight gap (play) between the insertion portion and the pipe mounting hole, but this gap may be substantially absent. In the present invention, the pipe stopper can be used as a stopper part by itself, such as C-type or E-type retaining rings, nuts, etc. In addition, the pipe stopper is placed inside the case (inside the case) to support the watch movement. It is also possible to integrally form a plate portion having a U-shaped groove in an inner frame made of synthetic resin or the like, and use this plate portion as a pipe stopper. In this case, the plate portion can be made to function as a pipe stopper by fitting a U-shaped groove into the engagement groove at the inner end portion of the trunk of the winding stem pipe. Furthermore, depending on the type of pipe stopper, the engagement groove at the inner end of the body can be formed as an annular groove or a screw groove. In the present invention, a coil spring can be suitably used as the elastic body, and a rubber-like elastic body can be used, or these can be used together.
[0019]
In the present invention, the winding stem pipe is held in a state in which the winding stem pipe is urged toward the outer side by the urging force of the elastic body by a retaining action by a pipe stopper disposed on the inner side of the winding stem pipe. It is attached to the trunk without being fixed to. For this reason, in a state where the pipe stopper is removed for maintenance, the winding stem pipe loosely inserted into the pipe mounting hole can be easily pulled out to the outer side of the trunk. In addition, in this case, as the urging force of the elastic body is released toward the outer side of the cylinder, the winding stem pipe is pushed out to the outer side of the cylinder in accordance with the restoring dimension where the elastic body returns to the free state. The initial operating force when pulling out is small.
[0020]
In a preferred embodiment of the present invention, the flange portion is in contact with a contact surface formed on the cylinder, and the pipe stopper is in contact with the cylinder inner surface of the cylinder, and the flange portion and the pipe stopper are connected to the pipe mounting hole. Is sandwiched from the inside and outside of the cylinder, which is excellent in that there is no shakiness in the axial direction of the winding stem pipe with respect to the cylinder.
[0021]
In the preferable form of this invention, since the said elastic body is a coil spring, it is excellent at the point which can ensure the initial stage extrusion at the time of drawing out a winding stem pipe.
[0022]
In a preferred embodiment of the present invention, since the elastic body is a rubber packing, the elastic body is excellent in that it can also serve as a waterproof between the winding stem pipe and the pipe mounting hole.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
[0024]
Reference numeral 11 in FIG. 1 indicates a wristwatch as a portable timepiece. The timepiece 11 accommodates a timepiece movement (not shown) in a timepiece exterior assembly 12. The watch movement is powered by a small battery or mainspring, or is self-winding, or compatible with a digital watch that digitally displays the time on the dial plate using a quartz oscillation module, or compatible with a digital watch. Any of those that are used in combination with these may be used.
[0025]
The watch exterior assembly 12 has a cover glass 14 mounted in a liquid-tight manner on one surface in the thickness direction of an annular metal barrel 13, and a back cover 15 made of metal or the like on the rear surface in the thickness direction of the barrel 13 (see FIG. 2). ) Is liquid-tightly mounted. The dial plate 16 and the like can be seen through the cover glass 14, and the back cover 15 can be removed.
[0026]
As shown in FIG. 2, a pipe attachment hole 17 that penetrates the cylinder 13 in the radial direction is formed in a part of the cylinder 13. One end of the pipe attachment hole 17 is opened inside the case, that is, inside the watch exterior assembly 12, and the other end of the pipe attachment hole 17 is opened outside the case, ie, outside the watch exterior assembly 12.
[0027]
The pipe mounting hole 17 includes a small-diameter hole portion 17a that opens to the body inner surface 13a of the body 13, a large-diameter hole portion 17b that opens to the body outer surface 13b of the body 13, and an elastic body provided between them. The housing hole 17c is formed. The trunk inner surface 13a refers to a surface facing the internal space (the trunk inner side) of the trunk 13. The elastic body accommodation hole 17c opened to the outer surface 13b through the large diameter hole 17b has a larger diameter than the small diameter hole 17a, but a smaller diameter than the large diameter hole 17b. For this reason, while the back surface 17d of the elastic body accommodation hole part 17c is made by the cyclic | annular 1st level | step difference which makes the boundary of the small diameter hole part 17a and the elastic body accommodation hole part 17c, the large diameter hole part 17b and an elastic body A contact surface 17e that forms the inner surface of the large-diameter hole portion 17b is formed by an annular second step that forms a boundary with the accommodation hole portion 17c.
[0028]
A winding stem pipe 21 made of metal, for example, stainless steel, is attached to the barrel 13 so as to pass through the pipe mounting hole 17 and be inserted and removed from the outside of the barrel.
[0029]
Specifically, as shown in FIG. 2, the winding stem pipe 21 includes an annular flange portion 22 that is integrally projected on the outer periphery of the axially intermediate portion, and an insertion portion 23 that is disposed inside the trunk with the flange portion 22 as a boundary. And a trunk outer end 24 disposed on the trunk outer side with the collar portion 22 as a boundary.
[0030]
The flange portion 22 is in contact with the contact surface 17e and regulates the insertion depth of the winding stem pipe 21 with respect to the trunk 13, and the diameter thereof is smaller than the large diameter hole portion 17b and larger than the elastic body accommodation hole portion 17c. Further, the thickness of the flange portion 22 is the same as the depth of the large-diameter hole portion 17b so that the outer surface of the flange portion 22 is flush with the trunk side surface 13b in a state where the flange portion 22 and the contact surface 17e are in contact with each other. Is desirable.
[0031]
The maximum diameter of the insertion portion 23 is slightly smaller than that of the small-diameter hole portion 17a, whereby a slight gap (play) is created between the small-diameter hole portion 17a and the insertion portion 23 as shown in FIG. ing. When the winding stem pipe 21 is positioned in the axial direction on the contact surface 17e, the insertion portion 23 is arranged such that the trunk inner end portion 23a of the insertion portion 23 farthest from the flange portion 22 protrudes inside the barrel 13. Has a length.
[0032]
For example, an annular engagement groove 25 that opens to the outer periphery of the end portion 23a is formed at the root of the trunk inner end portion 23a. A pipe stopper 26 made of an E-shaped retaining ring or the like is detachably engaged with the engaging groove 25. The pipe stopper 26 is in contact with the cylinder inner surface 13 a and functions as a retaining stopper for the winding stem pipe 21 to the cylinder outer side with respect to the pipe mounting hole 17. Further, the pipe stopper 26 attaches the winding stem pipe 21 to the barrel 13 by sandwiching the periphery of the pipe attachment hole 17 together with the flange portion 22 from the inside and outside of the barrel 13.
[0033]
An elastic body such as a coil spring 27 accommodated in the elastic body accommodating hole 17c is wound around the outer periphery of the insertion portion 23. One end of the coil spring 27 is received by the back surface 17 d and the other end is received by the flange portion 22, and the back surface 17 d and the flange portion 22 are sandwiched in a compressed state. For this reason, the winding stem pipe 21 is urged toward the outer side of the cylinder by the repulsive force of the coil spring 27 in the compressed state, and accordingly, the pipe stopper 26 on the inner surface 13a of the pipe attachment hole 17 is opened. Contact is maintained.
[0034]
Reference numeral 28 in FIG. 2 denotes a rubber annular waterproof packing. The packing 28 is fitted and mounted in an annular groove provided on the outer periphery of the insertion portion 23, and is sandwiched in an elastically deformed state between the insertion portion 23 and the small diameter hole portion 17a. 17 and the winding stem pipe 21 are waterproofed.
[0035]
The winding stem pipe 21 is attached to the trunk 13 in the following procedure. First, in a state in which the coil spring 27 is accommodated in the elastic body accommodating hole portion 17c from the outer side of the body, or in a state in which the coil spring 27 is fitted to the outer periphery of the insertion portion 23 of the winding stem pipe 21, Is inserted through the pipe mounting hole 17. Along with this, the coil spring 27 in the free state is compressed, and the trunk inner end 23a of the insertion portion 23 protrudes to the inner side of the trunk 13 (the inner space of the trunk 13). Insertion of the insertion portion 23 into the pipe attachment hole 17 is restricted by the flange portion 22 coming into contact with the contact surface 17e formed from the inner surface of the large-diameter hole portion 17b. With this restriction, the engagement groove 25 of the trunk inner end portion 23a is regulated. Is appropriately positioned with respect to the trunk inner surface 13a. Next, under the positioning, the pipe stopper 26 is fitted into the engagement groove 25 along the body inner surface 13a.
[0036]
Thereby, the winding stem pipe 21 inserted into the pipe mounting hole 17 is attached to the trunk 13. In this case, the insertion portion 23 of the winding stem pipe 21 is not press-fitted with a driving operation into the pipe mounting hole 17, so that the insertion operation is easy. Therefore, the workability of attaching the winding stem pipe 21 is good. In the state where the winding stem pipe 21 is attached to the trunk 13, the trunk outer end 24 of the pipe 21 is disposed so as to protrude outward from the trunk outer surface 13 b of the trunk 13.
[0037]
The winding stem pipe 21 attached to the trunk 13 is held in a state in which the winding stem pipe 21 is urged toward the outer side of the trunk by the urging force of the coil spring 27 by a retaining action by the pipe stopper 26. Therefore, the winding stem pipe 21 is attached to the trunk 13 without being fixed to the pipe attachment hole 17.
[0038]
For this reason, it is possible to remove the winding stem pipe 21 from the barrel 13 during maintenance or the like in the reverse procedure of the assembly described above. This detachment can be performed by removing the pipe stopper 26 on the inner side of the trunk and withdrawing the winding stem pipe 21 loosely inserted in the pipe mounting hole 17 to the outer side of the trunk with the back cover 15 removed. In this case, since the retaining function of the winding stem pipe 21 is lost by removing the pipe stopper 26, the urging force of the coil spring 27 is released toward the outer side of the trunk. Along with this, the winding stem pipe 21 is pushed out to the outer side of the cylinder in accordance with at least the restoration dimension in which the coil spring 27 returns to the free state. For this reason, the initial operating force when the winding stem pipe 21 is pulled out can be small. In addition, since the coil spring 27 can be compressed so as to obtain a larger restoring dimension as compared with the rubber-like elastic body, the initial pushing force is strong and a large initial pushing amount can be secured. For this reason, even if the movement of the winding stem pipe 21 is reluctant, reliable initial extrusion can be expected. Therefore, after this, the winding stem pipe 21 can be easily pulled out to the outside of the body with a small operating force.
[0039]
The crown indicated by reference numeral 31 in FIG. 1 is made of metal, and has a crown main portion 32 and a crown shaft portion 33 that extends integrally from the central portion in the axial direction as shown in FIG. The crown main portion 32 is provided with an annular relief groove 34 that surrounds the root side portion of the crown shaft portion 33. The escape groove 34 is a portion into which the trunk outer end portion 24 of the winding stem pipe 21 is inserted.
[0040]
The crown shaft portion 33 is inserted into the winding stem pipe 21 from the outer side of the trunk. A rubber annular waterproof packing 35 is attached to an annular groove formed on the outer periphery of the shaft portion 33. The waterproof packing 35 is elastically deformed and sandwiched between the inner peripheral surface of the winding stem pipe 21 and the outer peripheral surface of the crown shaft portion 33, and bears water resistance therebetween. A winding stem 36 of a timepiece movement is connected to the crown shaft portion 33 from the inner side of the trunk. Therefore, by rotating the crown 31 in a predetermined state, the time adjustment is performed by operating the timepiece movement.
[0041]
When maintaining the portable timepiece 11 having the above configuration, the winding stem pipe 21 can be removed from the trunk 13 as described above with the crown 31 removed by a known method.
[0042]
Therefore, when the winding stem pipe 21 needs to be replaced in maintenance, the winding stem pipe 21 can be replaced independently. As a result, it becomes possible for the repair requester to replace the watch exterior assembly 12 including the trunk 13 and the like without being forced to replace the parts, thereby reducing the cost burden. Furthermore, regardless of whether the winding stem pipe 21 is exchanged or not, when the barrel outer surface 13b is polished by buffing or the like for cleaning to clean the barrel 13, the winding stem pipe 21 is easily removed and the outer side of the barrel is removed. It is possible to carry out in a state where the end portion 24 does not interfere with the polishing operation. For this reason, it is easy to polish, and the outer surface 13b can be reliably polished.
[0043]
In the assembled state, the pipe stopper 26 attached to the winding stem pipe 21 and the flange portion 22 of the winding stem pipe 21 sandwich the periphery of the pipe mounting hole 17 of the trunk 13 from inside and outside. For this reason, even if an impact is applied when the portable timepiece 11 falls, it is possible to prevent the winding stem pipe 21 from rattling in the axial direction with respect to the case 13.
[0044]
Further, as described above, when the winding stem pipe 21 is attached to the trunk 13, it is not necessary to screw the winding stem pipe 21, so that it is possible to prevent the winding stem pipe 21 from being stressed due to the attachment to the trunk 13. The For this reason, as the strength required for the winding stem pipe 21 can be lowered, it is possible to increase the degree of design freedom of the material and thickness of the winding stem pipe 21. Moreover, the process of making the pipe mounting hole 17 with a stepped hole is easier than the process of making the threaded portion, and the processing of the male threaded portion for the winding stem pipe 21 and the processing of the female threaded portion for the pipe mounting hole 17 are not required. Therefore, the processing cost can be reduced.
[0045]
FIG. 3 shows a second embodiment of the present invention. Since the second embodiment is basically the same as the first embodiment, the same parts are denoted by the same reference numerals as those of the first embodiment, and the description thereof is omitted. Hereinafter, the second embodiment is different from the first embodiment. The part will be described.
[0046]
In the second embodiment, an annular packing 127 made of rubber is adopted instead of the coil spring. The packing 127 functions as an elastic body that urges the winding stem pipe 21 toward the outer side of the trunk and a waterproof packing. For this reason, the waterproof packing 28 employed in the first embodiment is omitted in the second embodiment. It is. A dimension A in FIG. 3 indicates the thickness of the packing 127 in a free state.
[0047]
The configuration other than the points described above is the same as that of the first embodiment. Therefore, even in the second embodiment, the same effect as in the first embodiment can be obtained to solve the problem of the present invention. Moreover, in the second embodiment, the packing 127 functioning as an elastic body also serves as a waterproof between the trunk 13 and the winding stem pipe 21. Accordingly, the number of parts can be reduced, and the groove processing for the insertion portion 23 can be reduced, which is preferable in that the processing cost can be reduced.
[0048]
The present invention is not limited to the two embodiments, and can be applied to, for example, a pocket watch or a divers watch having a high-pressure waterproof function in addition to a normal wristwatch. Furthermore, it is applicable also to a portable timepiece having a screw lock structure. In this case, for example, both the large-diameter hole portion 17b and the flange portion 22 fitted to the large-diameter hole portion 17b are made non-circular such as a polygon, and the winding stem pipe 21 is prevented from being rotated by these engagements. A female screw portion is formed on the outer periphery of the screw 24, and a female screw portion that is removably screwed to the male screw portion is formed on the inner peripheral surface of the crown main portion 32. What is necessary is just to prevent it from rotating carelessly. Further, the contact surface 17e can also serve as the body outer surface 13b.
[0049]
【The invention's effect】
According to the present invention, the winding stem pipe which is provided without being loosely inserted into the pipe mounting hole and fixed to the trunk and is urged by the elastic body can be pulled out of the trunk by removing the pipe stopper in maintenance. Is possible. As a result, the initial operating force when pulling out the winding stem pipe can be reduced, and the winding stem pipe does not get in the way when polishing the outer surface of the trunk, and the winding stem pipe can be replaced separately. A portable watch with easy maintenance around the pipe can be provided.
[0050]
According to the invention having a configuration in which the periphery of the pipe mounting hole is sandwiched from the inside and outside of the barrel by the flange portion of the winding stem pipe contacting the barrel contact surface or the barrel inner surface and the pipe stopper, the axial direction of the winding stem pipe with respect to the barrel A portable watch capable of suppressing rattling can be provided.
[0051]
According to the invention provided with the elastic body made of the coil spring, it is possible to provide a portable timepiece in which the initial push-out when the winding stem pipe is pulled out during the maintenance is reliable.
[0052]
According to the invention provided with the elastic body made of rubber packing, it is possible to provide a portable timepiece that can also serve as a waterproof between the winding stem pipe and the pipe mounting hole.
[Brief description of the drawings]
FIG. 1 is a front view showing a portable timepiece according to a first embodiment of the invention.
FIG. 2 is a cross-sectional view showing a winding stem pipe and its surroundings along line F2-F2 in FIG.
FIG. 3 is a cross-sectional view showing around a winding stem pipe of a portable timepiece according to a second embodiment of the invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Portable timepiece 12 ... Clock exterior assembly 13 ... Body 13a ... Body inner surface 13b ... Body outer surface 17 ... Pipe attachment hole 17c ... Elastic body accommodation hole part of a pipe attachment hole 17d: Back surface 17e of the elastic body receiving hole portion ... Contact surface 21 of the barrel ... Winding pipe 22 ... Winding pipe flange 23 ... Winding pipe insertion portion 23a ... -Inner cylinder end 24 of the insertion part ... Winder pipe outer cylinder end 25 ... Engaging groove 26 ... Pipe stopper 27 ... Coil spring (elastic body)
127... Packing (elastic body)

Claims (2)

A cylinder provided with a stepped pipe attachment hole having an elastic body accommodating hole opening on the outer surface of the cylinder;
An insertion portion that is loosely inserted into the pipe mounting hole from the outside of the cylinder and has a cylinder inner end disposed inside the cylinder; a cylinder outer end disposed outside the cylinder; And a winding stem pipe having a flange provided between the insertion portion and the outer end of the trunk,
A coil spring that is sandwiched between the inner surface of the elastic body accommodating hole and the flange and is accommodated in the elastic body accommodating hole, and biases the winding stem pipe toward the outer side of the trunk;
A pipe stopper that is detachably engaged with an engagement groove provided at the inner end portion of the cylinder and prevents the winding stem pipe from coming off;
A portable watch equipped with   The flange portion is in contact with the contact surface of the cylinder, the pipe stopper is in contact with the cylinder inner surface of the cylinder, and the flange portion and the pipe stopper sandwich the periphery of the pipe mounting hole from the inside and outside of the cylinder. The portable timepiece according to claim 1.

Images