JPH11109053A - Sealing device, timepiece having sealing device, and electronic apparatus having sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device, a clock having the sealing device, and a sealing device capable of waterproofing and preventing locking and capable of positioning a rotating second member at a correct position. Provide electronic equipment. SOLUTION: This is a sealing device 10 disposed in a housing portion 11 provided between a first member 2 and a second member 3 which rotates with respect to the first member 2, and the sealing device 10 side. The first sealing portion 21 is formed in a horizontal direction so as to protrude from the first member 2 and performs waterproofing between the first member 2 and the second member 3. The first sealing portion 21 is formed so as to protrude in the vertical direction toward the second member 3. The second member 3
Is elastically deformed when fixed by rotating
A second sealing portion 22 for preventing locking between the member 2 and the second member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device disposed in an accommodating portion provided between a first member and a second member which rotates with respect to the first member. The present invention relates to an electronic device having a timepiece and a sealing device.

[0002]

2. Description of the Related Art A general wristwatch will be described as an example of a clock or an electronic device. Watch (watch)
In order to be carried and used at all times, it is required to withstand various environmental conditions such as water pressure, atmospheric pressure, temperature change, shock, vibration, magnetism, and light. Among them, for example, in the case of a wristwatch, waterproofing is extremely important to protect the internal movement and the like.
Is a conventional wristwatch case 1000 and this case 10
9 shows an example of screwing the back cover 1002 attached to the back cover 100.

In the conventional wristwatch shown in FIG.
0 and the back cover 1002, a ring-shaped packing 10
04 is arranged. The cross-sectional shape of the packing 1004 is rectangular.

The external thread 1006 of the case back 1002 engages with the internal thread 1008 of the case 1000, and the case 1004 is elastically deformed as shown in FIG. 16 by rotating the case back 1002 about the center axis CL of rotation. Thereby, case 1000 and back lid 100
The packing 100 is provided in the accommodation portion 1010 formed between
4 and the case 1000 and the back lid 1002
It is designed to be waterproof between.

[0005]

However, as shown in FIG. 17, when the thickness of the packing 1004 is smaller than a predetermined value due to manufacturing reasons, the case 1000 and the back cover 100 are not provided.
The packing 1004 cannot be sufficiently filled between the housing portions 1010 provided between the two, and water enters from outside into the case 1000 through the gap of the packing 1004 as shown by an arrow W. Therefore, there is a problem of causing poor waterproofing.

On the other hand, if the thickness of the gasket is too thicker than a predetermined value, when the back cover 1002 is rotated and tightened as shown in FIG.
2 occurs and the packing 1004 and the back lid 100
A gap 1014 remains between the two. To this end, water is also introduced from outside as shown by arrow W in the packing 1.
004 of the gasket 004, and the durability of the gasket 1004 is reduced.
Becomes stiff.

If the watch is to be repaired,
2 is removed from the case 1000, and after repair, the back cover 1002 is again
When installing using, this packing 1004 is too hard to use as it is,
New packing must be used.

Further, as described above, since the gap 1014 is formed between the case back 1000 and the back cover 1002, there is a problem that the external appearance is deteriorated.

Further, even if the packing has a predetermined thickness,
Even if the dimensions of the case and the accommodation portion of the packing vary, the same problem as described above occurs.

When a mark or the like is written on the outer surface of the back cover 1002, the back cover 1002 is simply screwed to the case 1000 using the male screw 1006 and the female screw 1008. If the back cover 1002 is closed tightly to raise the height, the mark cannot be positioned properly at a correct position, and there is a practical problem that the posture of the mark is inclined when the back cover 1002 is closed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a sealing device and a sealing device capable of waterproofing and preventing loosening and capable of positioning a rotating second member at a correct position with respect to a first member. It is an object to provide a timepiece having a device and an electronic device having a sealing device.

[0012]

According to the first aspect of the present invention, there is provided the following:
In a sealing device in which a sealing member is arranged in a housing portion provided between a member and a second member that rotates with respect to the first member, the sealing member is arranged in a horizontal direction toward the second member. A first sealing portion for waterproofing between the first member and the second member, and a second sealing member formed to protrude vertically toward the second member to rotate the second member with respect to the first member. And a second sealing portion for elastically deforming the first member to fix the first member and the second member to prevent loosening.

According to the first aspect of the present invention, the sealing device is disposed in a housing provided between the first member and the second member that rotates with the first member. The first sealing portion is formed to protrude in the horizontal direction toward the second member, and performs waterproofing between the first member and the second member.

The second sealing portion is formed so as to protrude vertically to the second member side, and is elastically deformed when rotating and fixing the second member with respect to the first member. 1
The locking between the member and the second member is performed.

Thus, the first sealing portion exerts a waterproof function between the first member and the second member, and the second sealing portion functions as a locking function between the first member and the second member. Demonstrate.

When the second member is rotated and fixed relative to the first member, the final positioning in the rotation direction by the rotation of the second member can be correctly set. This is because the second sealing portion only needs to exhibit the function of preventing the first member and the second member from loosening, and only the first sealing portion needs to have a waterproof function. This is because the amount of rotation of the two members does not affect the waterproof function.

According to a fifth aspect of the present invention, in the sealing device according to any one of the first to fourth aspects, the first sealing portion is in contact with the first member, and the first sealing portion is the second sealing portion. The portion that contacts the inner surface of the member is mirror-finished or provided with a lubricant, and the surface portion where the second sealing portion contacts the first member and the second sealing portion are formed of the second member. The part in contact with
It is rough.

According to the fifth aspect of the present invention, the surface portion where the first sealing portion abuts the first member and the portion where the first sealing portion abuts the inner surface of the second member have a mirror finish or a lubricant. Since it is provided, the adhesion performance is improved and the waterproof effect can be further improved. In addition, if the surface portion where the second sealing portion contacts the first member and the portion where the second sealing portion contacts the second member are rough surfaces, the second sealing portion may be the first member or the first member. The first sealing portion can reliably prevent loosening between the first member and the second member without being shifted with respect to the two members.

A sixth aspect of the invention is a timepiece including the sealing device according to any one of the first to fifth aspects.

According to the sixth aspect of the present invention, the first sealing portion exhibits a waterproof function between the first member and the second member, and the second sealing portion serves as a portion between the first member and the second member. Demonstrate the function of preventing loosening.

When the second member is rotated and fixed relative to the first member, the final positioning in the rotation direction by the rotation of the second member can be correctly set. This is because the second sealing portion only needs to exhibit the function of preventing the first member and the second member from loosening, and only the first sealing portion needs to have a waterproof function. This is because the amount of rotation of the two members does not affect the waterproof function.

According to a seventh aspect of the present invention, in the timepiece having the sealing device according to the sixth aspect, the first member is a case of a portable timepiece, and the second member is screwed by rotating on the back side of the first member. A back lid that is stopped or bayonet-stopped.

According to the seventh aspect of the present invention, the waterproof function and the function of preventing loosening between the case and the back cover of the portable timepiece and the back cover can be positioned in a correct posture in the rotating direction.

According to an eighth aspect, in the timepiece having the sealing device according to the sixth aspect, a waterproof function and a locking function between the case of the portable timepiece and the rotating bezel can be exhibited.

According to a ninth and tenth aspect of the present invention, in the timepiece having the sealing device according to the sixth aspect, a waterproof function and a locking function between the screw portion of the portable timepiece and the external operation member are exhibited. Can be.

An eleventh aspect of the present invention is an electronic device having the sealing device according to any one of the first to fifth aspects.

According to the eleventh aspect of the present invention, the first sealing portion exhibits a waterproof function between the first member and the second member, and the second sealing portion forms the first member and the second member. Demonstrate the function of preventing loosening. When the second member is rotated and fixed relative to the first member, the final positioning in the rotation direction due to the rotation of the second member can be correctly set. This is because the second sealing portion only needs to exhibit the function of preventing the first member and the second member from loosening, and only the first sealing portion needs to have a waterproof function. This is because the amount of rotation of the two members does not affect the waterproof function.

[0028]

FIG. 1 shows a preferred embodiment of an electronic device having a sealing device or a timepiece having a sealing device according to the present invention.

FIG. 1 is a sectional view showing an example of the structure of a wristwatch. This watch is a portable watch or a wristwatch. This wristwatch 1 has a case 2, a back cover 3, a glass 4, a movement 5, a dial 6, a winding stem 7,
A crown 8, a middle frame 9 and a sealing device (also referred to as a sealing member) 10 of the present invention are provided.

Examples of the material of the case 2 of the wristwatch 1 include, for example, those generally plated with stainless steel or a copper-based alloy, plastics or aluminum alloys, and furthermore, titanium, titanium alloys such as platinum and gold peeling materials. Alternatively, a cemented carbide or the like can be employed.

The case 2 has a glass 4 fixed on the surface side, and the glass 4 may be made of, for example, safar glass, general inorganic glass, acrylic resin, borosilicate glass, or the like.

A movement 5 is arranged in the case 2, and the movement 5 has a movement base plate 5 a, and a winding stem 7 is provided for the movement 5. A crown 8 is connected to the winding stem 7. A dial 6 is arranged on the movement 5, and a long hand 6 a and a short hand 6 b are provided on the axis of the movement 5.

On the back side of the case 2, the back cover 3 can be fixed by rotating about the center axis CL of rotation.

The sealing device 10 according to the embodiment of the present invention seals the lower end portion 2a of the case 2 and the screw connection portion of the back cover 3 to provide a waterproof function and a function of preventing the back cover 3 from being loosened. Is to demonstrate.

FIG. 2 is an enlarged view of a portion P of the sealing device 10 of FIG.

This portion P is disposed between the lower end 2a of the case 2 and the back cover 3 as shown in FIG. The sealing device 10 includes a lower end 2 a of the case 2.
And a housing (space) 11 formed between the back lid 3
It is arranged in.

The sealing device 10 is preferably ring-shaped, as shown in FIG.
1 and a second sealing portion 22. In the sealing device 10 shown in FIG. 3, the first sealing portion 21 and the second sealing portion 22
As shown in FIGS. 2A and 2B, they are integrally formed in a ring shape.

As shown in FIG. 2A, the first sealing portion 2
1 has a rectangular portion 21a and a protruding portion 21b when viewed in cross section. The projection 21b is substantially triangular in cross section. On the other hand, the sealing portion 22 has a rectangular shape.

The case 2 corresponds to a first member that does not rotate,
The back cover 3 is a second member which is rotated with respect to the case 2 and fastened with screws.

The protruding portion 21b of the first sealing portion 21 abuts against the outer peripheral surface 3a of the back cover 3 to be elastically deformed. The upper end surface 21c of the first sealing portion 21 is a portion that comes into contact with the lower surface of the lower end portion 2a of the case 2. The lower end surface 21d of the first sealing portion 21 is an open surface.

The upper end surface 22c of the second sealing portion 22 is a portion that contacts the lower surface of the lower end portion 2a of the case 2. The lower end surface 22 d of the second sealing portion 22 is a portion that comes into contact with the receiving surface 3 b of the back cover 3. Inner peripheral surface 22e of second sealing portion 22
And the inner peripheral surface 21 e of the first sealing portion 21 is a portion that comes into contact with the inner peripheral surface of the lower end 2 a of the case 2.

FIG. 2A shows a state in which the back cover 3 has not yet been completely tightened even though the external thread 3f of the back cover 3 is engaged with the female screw 2f of the case 2. FIG. 2B shows a state in which the back cover 3 is tightened to a predetermined position.

When the back cover 3 is screwed in the direction T about the center axis CL shown in FIGS. 1 and 2 as shown in FIG. 2B, the protrusion 21b is elastically deformed with respect to the outer peripheral surface 3a of the back cover 3. And the lower end surface 22d of the second sealing portion is pressed by the receiving surface 3b of the back cover 3 to be elastically deformed.

As described above, the first sealing portion 21 of the sealing device 10 is brought into close contact with the outer peripheral surface 3a of the back cover 3 by being elastically deformed. Thus, the first sealing portion 21 has a waterproof function in the housing 11 between the case 2 and the back cover 3. At the same time, the second sealing portion 22 plays a role of preventing the back cover 3 from rotating around the lower end 2 a of the case 2.

The first sealing portion 2 of such a sealing device 10
The first and second sealing portions 22 are made of, for example, nitrile rubber (NB).
R), butyl rubber (IIR), fluoro rubber (FKM),
Ethylene propylene rubber (EPT), styrene butadiene rubber (SBR), silicon rubber (Si), chloroprene rubber (CR) and the like are used in the same type or in different types. In general, nitrile rubber (NBR) is used, and when water resistance is required, butyl rubber (IIR) is used. When quality is required, fluoro rubber (FKM) is used.

Further, in order to enhance the waterproof function of the first sealing portion 21 of the sealing device 10 and enhance the function of preventing the second sealing portion 22 from rotating, it is more desirable to perform the following processing.

That is, regarding the first sealing portion 21,
One or both of the protrusion 21b and the outer peripheral surface 3a of the back cover 3,
And / or applying a mirror finish or applying a lubricant or the like to one or both of the upper end surface 21c and the lower surface of the case 2 so that the elastically deformed protrusion 2 of the first sealing portion 21 is formed.
1b and the outer peripheral surface 3a of the back cover 3 and the upper end surface 21c.
And the lower surface of the case 2 so as to further improve the waterproof function at this position.

On the other hand, between the lower end surface 22d of the second sealing portion 22 and the receiving surface 3b of the back cover 3 and / or between the upper end surface 22c and the lower surface of the case 2 in FIG. 2 (B)
It is desirable to make the rough surface 40 as shown in FIG. As a method of forming the shape of the rough surface 40, for example, there is a method of forming a slit, a streak, a groove shape, or performing a honing process.

In the state where the back cover 3 is securely fastened to the lower end 2a of the case 2 as shown in FIG. 2B, for example, the dimension a of the sealing device 10 is smaller than the dimension b and the dimension c Is smaller than the dimension d, as an example.

As shown in FIG. 2B, the back cover 3 is attached to the lower end 2a.
In a state in which the lower end 2a is tightened as shown in FIG.
Opposing forces F, F are generated between the rear lid 3 and the rear lid 3, and the opposing forces F1, F are also generated between the lower end 2a and the receiving surface 2b of the rear lid 3.
F1 has occurred. The opposing forces F, F perform a waterproof function,
The opposing forces F1 and F1 serve to prevent the back lid 3 from loosening.

By the way, as described above, the sealing device 10
Since the first sealing portion 21 that is responsible for waterproofing and the second sealing portion 22 that is responsible for preventing the back cover 3 from being loosened are separately assigned, as shown in FIG. Can be demonstrated. That is, when the mark M is described on the surface 3g of the back cover 3, if the conventional packing is used, the waterproof effect cannot be obtained unless the back cover 3 is firmly tightened to the case side. At the time of assembly, in many cases, the mark M could not be arranged along the predetermined line PL as shown in FIG. On the other hand, as shown in FIG. 11B, the use of the sealing device 10 of the present invention enables accurate positioning along the rotation direction T. This is because the first sealing portion 21 shown in FIGS. 2A and 2B has a waterproof function, and the second sealing portion 22 simply has to function to prevent the back cover 3 from rotating. The waterproof function is the first even if it is not tightly tightened against the case 2 side.
This is because the sealing portion 21 is used. Therefore, at the time of manufacturing, assembling or repairing, it is only necessary to turn the back cover 3 with respect to the case 2 so that the mark M is along the predetermined line PL as shown in FIG.

Next, another embodiment of the sealing device of the present invention will be described with reference to FIGS.

FIGS. 5 and 6 show another embodiment of the present invention corresponding to FIG.

First, the sealing device 110 of the embodiment shown in FIG.
Has a first sealing portion 21 and a second sealing portion 22, and the first sealing portion 21 and the second sealing portion 22
Is made in a ring shape but is made of a separate member unlike the example of FIG.

In this manner, similarly to the embodiment of FIG. 2, the first sealing portion 21 exhibits a waterproof function, and the second sealing portion 22 functions to prevent the back cover 3 from being loosened and to align the back cover 3. Demonstrate function.

The sealing device 210 shown in FIG. 6 is the same as the sealing device 1 shown in FIG.
Compared to 0, a plurality of through holes 22h are formed in the second sealing portion 22 in a planar manner. Thus the second
By forming a through hole 22h which is a hollow portion with respect to the sealing portion 22, the second sealing portion 22 is
Between the lower end portions 2a of the back cover 3 to enhance the function of preventing the back cover 3 from loosening. Furthermore, it is possible to elastically deform in a well-balanced manner by uniformly forming a plurality of portions in a plane.

7 to 9 show another embodiment of the sealing device of the present invention. FIG. 7 (A),
8B and FIG. 8, the protruding portion 21b of the first sealing portion 21 is not a triangular shape but a semicircular shape when viewed in cross section. Other points of the sealing device 310 of the embodiment of FIG. 7 are the same as those of the embodiment of FIG.

Next, the sealing device 410 shown in FIG.
The first sealing portion 21 and the second sealing portion 22 are ring-shaped and separate members, and the projection 21b of the first sealing portion 21 has a cross section. It looks like a semicircle.

In FIG. 9B, a through hole 22h is formed in the second sealing portion 22 and the first sealing portion 21
Is not a triangular shape but a semicircular shape when viewed in cross section.

The sealing device 610 shown in FIG.
The case 502 is disposed in the storage section 611 between the first and second cases.
The screw diameter A of the back cover 503 is set smaller than the inner diameter C of the protruding portion 21 b of the first sealing portion 21 and the inner diameter B of the outer peripheral surface (contact surface) 3 a of the back cover 3. By doing so, assemblability can be improved. because,
If the screw diameter A and the packing inner diameter C are the same or C is small when the packing is attached to the back cover 503, it interferes with the screw portion and the assembling property is deteriorated. Therefore, the above problem was solved by setting the portion of the inner diameter B to be larger than the screw diameter A. This is the same in the bayonet method.

FIG. 12 shows an electronic device, for example, the crown 8 of the wristwatch 1 as described above, engaged with the screw portion 700. The shaft 8 a of the crown 8 passes through the center of the screw 700. The sealing device 800 of the present invention is disposed between the crown 8 and the screw 700. This sealing device 800
The first sealing portion 21 and the second sealing portion 21 are similar to the sealing device described above.
It has a sealing portion 22.

The protruding portion 21b of the first sealing portion 21 abuts against the outer peripheral surface of the shaft 8a of the crown 8 and is elastically deformed, and exhibits a waterproof function between the crown 8 and the screw 700. Also, the second sealing portion 22 has a crown 8 with a screw 70
It has a loosening prevention function that stops loosening easily with respect to zero.

As described above, the sealing device 800 uses the crown 8
A waterproof function and a locking function between the screw 700 and the screw 700 are exhibited.

Further, as shown in FIG.
In the case where the mark M1 as shown in FIG. 13 is formed on the end face 8c, the mark M1 as shown in FIG.
13 so that 1 does not tilt with respect to the predetermined line PL.
As shown in (B), the mark M1 can be correctly positioned along the predetermined line PL. This can be done because the first sealing portion 21 has only the waterproof function and the second sealing portion 22 only has to perform the locking between the crown 8 and the screw 700. This is because the crown 8 can be arbitrarily positioned at a position where the loosening can be exhibited.

FIG. 14 shows another embodiment of the sealing device of the present invention. The sealing device 900 includes a case 902
A waterproof function and a detent function between the rotating bezel 910 and the rotating bezel 910 are exhibited. The rotating bezel 910 is, for example, an adhesive 9
30 and are integrated with the glass 904. The first portion 921 of the sealing device 900 provides a waterproof function between the rotating bezel 910 and the case 902, and the second portion 922 of the sealing device 900
0 is prevented from loosening. Glass 904 is adhesive 9
30 and co-rotate with the rotating bezel 910 to form the second part 9
At 22, a rotating torque is generated when rotating the rotating bezel.

As described above, the sealing device of the present invention exhibits the functions of waterproofing and locking between the case back and the case, between the crown or button and the screw portion, and between the rotating bezel and the case. In addition, when a mark is described for a member corresponding to the second portion as necessary, the waterproofing function is left to the first sealing portion, and the second sealing portion is used to perform the locking function. It can be positioned at a position in the appropriate rotational direction to exert.

As described above, the sealing device according to the embodiment of the present invention uses a packing such as a substantially L-shaped elastic member, and ensures the waterproofness of the case (body) and the back cover 3 in the first portion. The second sealing portion 22 functions to stop the rotation of the back cover 3. As described above, the rotating second member may be a glass edge or a pipe in addition to the back cover.

In the example of FIG. 14, the first portion 921 has a waterproof function, and the second portion 922 has a detent function. On the other hand, in the conventional rotating bezel 1200 shown in comparison with FIG. 19, only the packing 1240 for locking the case 1210 is used, so that the rotating bezel 1200 and the glass 1270 cannot be integrated.
If the rotating bezel 1200 and the glass 1270 are integrated, water from the outside passes through the vicinity of the packing 1240 and passes between the glass 1270 and the case 1210 to enter the inside. For this reason, the glass 1270 is conventionally waterproofed with the packing 1290 to the case 1210. This is not necessary by using the sealing device 900 according to the embodiment of the present invention as shown in FIG. 14, and the rotating bezel 910 and the glass 904 are connected via a packing or an adhesive 930 as shown in FIG. There is a merit that it can rotate integrally with the center axis CL1 in the T1 direction.

The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the scope of the present invention.

The above-mentioned wristwatch is, for example, a quartz oscillation type timepiece, and may be of a battery type, a manual winding type, a self-winding type, or a solar cell type. Such a so-called electronic wristwatch is a kind of timepiece intended by the present invention, and is also a kind of electronic equipment.

The concept of the timepiece in the present invention is not limited to a wristwatch, but includes a table clock, a wall clock, and the like, and may be any type provided with a first member that is a fixed part and a second member that is a rotating part.

The concept of the electronic device according to the present invention is not limited to a timepiece, but is not limited to a timepiece as long as it includes a first member that is a fixed portion and a second member that is a rotating portion.
The invention can be applied to other fields or areas. For example, the electronic device is a pager such as an electronic organizer, an electronic desk calculator, a portable personal computer, a mobile phone, a pager, and the like.

Further, the concept of a wristwatch includes not only the above-mentioned electronic wristwatch but also a mechanical timepiece such as a hand-wound timepiece or an automatic timepiece. The back lid may be stopped by bayonet instead of screwing.

[0074]

According to the present invention, waterproofing and loosening prevention are possible, and the rotating second member can be positioned at a correct position.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a wristwatch provided with a sealing device of the present invention.

FIG. 2 is an enlarged view showing a portion P of FIG. 1;

FIG. 3 is a perspective view showing a sealing device used in FIGS. 1 and 2;

FIG. 4 is a diagram showing an example in which a force is applied by a sealing device.

FIG. 5 is a diagram illustrating another embodiment of the sealing device of the present invention.

FIG. 6 is a view showing still another embodiment of the sealing device of the present invention.

FIG. 7 is a view showing still another embodiment of the sealing device of the present invention.

FIG. 8 is a perspective view showing the embodiment of FIG. 7;

FIG. 9 is a perspective view showing still another embodiment of the sealing device of the present invention.

FIG. 10 is a view showing still another embodiment of the sealing device of the present invention.

FIG. 11 is a diagram showing alignment in the rotation direction of the back cover in the embodiment of the present invention.

FIG. 12 is a view showing still another embodiment to which the sealing device of the present invention is applied.

FIG. 13 is a diagram showing an example of alignment of a crown mark in FIG. 12;

FIG. 14 is a view showing still another application example of the sealing device of the present invention.

FIG. 15 is a view showing an example of packing between a back cover and a case in a conventional timepiece.

FIG. 16 is a diagram showing a state where the packing of FIG. 15 is tightened.

FIG. 17 is a diagram showing a state in which the packings of FIGS. 15 and 16 are small and do not perform a waterproof function.

FIG. 18 is a view showing a state in which the packings of FIGS. 15 and 16 are too large to form a gap or crack.

FIG. 19 is a view showing an example of packing between a conventional rotating bezel and a case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wristwatch (watch, electronic device) 2 Case (1st member) 3 Back cover (2nd member) 10 Sealing device 11 Housing 21 First sealing portion 22 Second sealing portion 21b Projection 40 Rough surface

Claims (11)

[Claims] 1. A sealing device in which a sealing member is disposed in a housing portion provided between a first member and a second member rotating with respect to the first member, wherein the sealing member is A first sealing portion that is formed to protrude horizontally in the second member and performs waterproofing between the first member and the second member; and that is formed to protrude vertically in the second member and is formed in the first member. And a second sealing portion that elastically deforms when rotating and fixing the second member to prevent loosening between the first member and the second member. . 2. The sealing device according to claim 1, wherein the first sealing portion and the second sealing portion are integrally formed in a ring shape. 3. The sealing device according to claim 1, wherein the first sealing portion and the second sealing portion are ring-shaped and are separate members. 4. The first sealing portion and the second sealing portion are ring-shaped and have an L-shaped cross section.
3. The sealing device according to claim 1. 5. A mirror-finished surface or a lubricant is applied to a surface portion where the first sealing portion contacts the first member and a portion where the first sealing portion contacts the inner surface of the second member. The surface portion where the second sealing portion contacts the first member and the portion where the second sealing portion contacts the second member are rough surfaces. The sealing device as described in the above. 6. A timepiece comprising the sealing device according to claim 1. 7. The sealing device according to claim 6, wherein the first member is a case of a portable timepiece, and the second member is a back lid which is screwed or bayonet-fastened by rotating on the back side of the first member. Watch with. 8. The timepiece having the sealing device according to claim 6, wherein the first member is a case of a portable timepiece, and the second member is a rotating bezel rotatably disposed with respect to the first member. 9. The timepiece having the sealing device according to claim 6, wherein the first member is a screw portion of the portable timepiece, and the second member is an external operation member rotatably arranged with respect to the first member. . 10. The timepiece having the sealing device according to claim 9, wherein the external operation member is a button or a crown. 11. An electronic apparatus comprising the sealing device according to claim 1.