CN1037377C

CN1037377C - Method for positioning watch glass on watch case and corresponding watch

Info

Publication number: CN1037377C
Application number: CN92115374A
Authority: CN
Inventors: M·伊夫斯; K·奥利维埃
Original assignee: Ebauchesfabrik ETA AG
Current assignee: Ebauchesfabrik ETA AG
Priority date: 1991-12-28
Filing date: 1992-12-24
Publication date: 1998-02-11
Anticipated expiration: 2007-12-24
Also published as: MX9207262A; BR9205175A; ATE166731T1; AU665966B2; JPH05264750A; EP0549978B1; AU3049292A; CN1078050A; CH683482GA3; KR930013896A; DE69225687D1; CA2084953A1; EP0549978A1; TW223684B; CH683482B5

Abstract

A method for fixing a watch glass on a watch case and a watch with a positioning device manufactured by the method. A watch according to the invention comprises a case, a watch glass mounted on the case and provided with notches, and angular positioning means for attaching the watch glass to a seat of said case. The case seat is provided with a protruding angle engaging with the notch, and this angle positioning device is used to ensure that the above-mentioned watch glass is positioned and installed on the above-mentioned case.

Description

The method that watch glass is positioned on the watchcase reaches corresponding table

The present invention relates to a kind of watch glass is loaded on method on the watchcase by predetermined angular position.

It also relates to a kind of table that contains locating device in addition, and this locating device is used for watch glass is contained in housing, and the watch glass and the housing that are used to assemble described table.

Or rather, the present invention relates to watch glass that plastic material is made and install and be positioned on the watchcase that same material makes,, can be welded on the watch glass heat seal in the housing by a kind of technology as ultrasonic soldering.

This class solder technology in European patent EP 0101663 by introduction.

Also have, can pre-determine angle and make watch glass be fixed on the fixed system on the housing and the locating device that is used for above-mentioned welding is known.

Yet a subject matter of said method is complex structure or is observable from the outside.

Therefore, the purpose of this invention is to provide a kind of on watchcase the method for loader table glass, a kind of table that has locating device is provided, this locating device is used for above-mentioned watch glass is fixed on housing, and does not have the shortcoming introduced above.

For this purpose, the present invention have a kind of with fixed table glass under the predetermined relative positioning angle in a method that comprises on the watchcase of at least one shell block, the step that comprises is as follows:

(a) locating slot directly is set on the limes marginis of watch glass, is used to be fastened to shell block;

(b) on shell block, directly be provided with one with the corresponding coign of described groove, its shape can make it mesh in groove,

(c) watch glass is put on the shell block, described notch and described coign are aligned, they are bonded with each other and watch glass is fixed on the housing.

For this purpose, the invention provides a kind of table, it comprises:

---a watchcase has at least one shell block;

---piece is fixed on the watch glass on the housing,

---be used for watch glass is fixed on device on the shell block of housing,

---be used for this watch glass is fixed on angle locating device on the shell block.

This table is characterised in that: above-mentioned angle locating device is configured to, and on the one hand, a notch is set directly on the limes marginis of watch glass, on the other hand, a coign is set directly on shell block, and meshes in described notch.

For this purpose, watch glass is characterised in that and comprises a locating notch of being made by the V-type groove on the one hand, this groove radially extends and is set on the edge of watch glass, on the other hand, housing comprises a shell block and a bonnet, it is characterised in that and also comprises a location coign that is arranged on the shell block that the local at least shape of this coign is that a drift angle is about 80 ° isosceles triangle.

Other features and advantages of the present invention will be by following more detailed description, and provides with reference to accompanying drawing and illustrational mode.

Fig. 1 is the partial sectional view of table assembly, and this table assembly comprises by the installation of installation method of the present invention and locating device and is positioned at watch glass on the housing.

Fig. 2 is the partial sectional view of the part watch glass that arrow II shows in Fig. 1 according to the present invention.

Fig. 3 be according to the present invention in Fig. 2 the side view of the watch glass shown in the arrow III.

Fig. 4 is the partial top view of watchcase of the present invention.

Fig. 5 is along the partial sectional view shown in the arrow V-V among Fig. 4.

Fig. 6 is similar to Fig. 5, but the watch glass that shows in Fig. 2 and 3 is positioned on the housing of Figure 4 and 5, and prepares heat seal and be welded on this housing.

As shown in Figure 1, in this embodiment, table according to the present invention comprises the watchcase 1 that has integrally formed shell block 2 and tongue and groove 4, thereby constitutes a simple assembly.

Described table comprises that also one is installed in the watch glass 6 on the housing 1.In the present embodiment, watch glass 6 and housing 1 are to make with heat sealable thermoplastic.For example, watch glass is to be formed by the transparent acrylic resin that is commonly called as organic glass on the market (PMMA).For housing, it can be masked as ABS by abbreviation, and one of material of ASA or SAN is made.Above-mentioned material is respectively acrylic acid---butadiene---styrol copolymer, acrylic acid styrene-acrylonitrile copolymer resin copolymer and the rare vinyl cyanide of benzene second.Between watch glass 6 and housing 1, insert an index dial 8.

At the index dial of housing 1 M of table mechanism of standard is housed for 8 times, resembles characteristic ground with empty line here and represent.

With further reference to Fig. 2 and Fig. 3, it has represented one according to the watch glass 6 that supplies meter apparatus to use of the present invention in more detailed mode.

Watch glass 6 has an outside enlarging, and be used to housing 1 on the periphery limes marginis 10 (Fig. 1 and Fig. 4) that matches of circular trough 12.In aforesaid European patent, described limes marginis 10 with more detailed mode and be inserted on the housing 1 and welded by heat seal, particularly carry out heat and merge by ultrasonic technology.

It should be noted that watch glass 6 contains the notch 14 of a location, form the V-type groove that radially extends along watch glass 6 at least on notch top, and notch 14 forms on edge 10.

The notch 14 that is illustrated forms the drift angle A (Fig. 3) of an isosceles triangle at least on its top, the selective value of drift angle A is between 85 ° to 95 °, and best value is 90 °.Therefore, notch 14 is arranged in the edge 10 outermost radial positions, and its opening is in the horizontal with respect to opening inside and outside the watch glass.

With further reference to Fig. 4 and Fig. 5, it shows one according to the housing 1 for table assembling usefulness of the present invention in more detailed mode.

Housing 1 comprises shell block 2, and it extends from wedge angle 18 can tighten fixedly watch chain, not shown, and shell block also comprises a bonnet 20.

As previously mentioned, housing 1 is provided with a passage or a ring groove 12 that is used for forming with the edge 10 of watch glass 6 weld zone.

According to the present invention, housing 1 comprises a location coign 22 disposed thereon, exactly is on shell block 2.

The coign 22 that forms on groove or passage 12 its local shape at least is an isosceles triangle, and its drift angle B (Fig. 5) is approximately 80 °.

Fig. 6 is illustrated in before the mutual welding of two elements, and watch glass 6 is positioned on the housing 1.Therefore, merit attention to such an extent that be, the coign 22 of Zhan Shiing in the drawings, the head portion at it is cut into wedge angle at least, is extended to watch glass 6 by housing 1 in common mode.

Or rather, notch 14 is that end face is represented with E in the face of housing 1 launches.

Therefore, be appreciated that in the method that watch glass is installed on the housing it is to realize in passages or the groove 12 by on housing 1, watch glass 6 being located, then edge 10 being inserted.Watch glass is rotated clockwise or counterclockwise, enter engagement, and notch/4 can the oneself be adjusted on coign 22 up to notch 14 and coign 22.

Ultrasonic soldering is operated and realized by a high frequency sound mechanical vibrator (sonotrode), and is not shown, in the European patent specification 0101663 of Jie Shaoing detailed explanation arranged in front.

Fig. 1 has represented to be formed by notch 14 and coign 22 the assembling table of the regional F of a coincidence.So the notch 14 and the coign 22 of this shape can be welded as a whole.

From the whole peripheral hot weld at edge 10 in shell block 2 passage or groove 12 in after, overlap the district and on table, stretch with circular pattern, by welding two kinds of materials, watch glass 6 be fixed on the housing 1 and obtain so-called coincidence.

The notch 4 and the coign 22 that form locating device on this table can integrally form with aforesaid stationary installation.

Fixing means according to the present invention is as described below:

At first, locating notch 14 is set directly on watch glass 6 on the one hand, for example obtains notch 14 by molded above-mentioned watch glass.Or rather, be arranged on the shape such as the notch 14 of the groove on watch glass 6 edges 10, form V-arrangement at least at an upper portion thereof, and extend diametrically with respect to watch glass, its opening is towards the latter's free end face.

On the other hand, the coign 22 that has illustrated directly is set on housing 1, the shape of coign 22 is corresponding with notch 14, i.e. isosceles triangle, and its shape can mesh with the latter.

In these steps, the angle that notch 14 and coign 22 provide respectively is 90 ° A and 80 ° B.

Next step is placed on watch glass 6 on the appropriate location of housing 1, makes notch 14 relative with coign 22 so that they can be meshed, thereby can be on housing 1 fixed table glass 6.

At last, adopt the notch 14 and the coign 22 of the method fusion component of heat seal welding, simultaneously with outward flange 10 heat seals of watch glass 6 to housing 1.

Said method and the device of having described of the present invention are to determine after the test of many times that watch glass is installed to best located angle on the housing, therefore, can't see any element from the outside of the table made, for example see over from the top of watch glass.Because the formation of notch 14 and coign 22 does not need to add in addition manufacturing process, they are these two structures that element itself has during molded, for example during the process of injection moulding watch glass and housing respectively, and therefore, the present invention is simple and cheaply.

In addition, the watch glass that has notch 14 is suitable for being positioned on the housing that is provided with coign, and coign allows adaptability and fabulous bendability preferably on the position of making assembly.

Claims

1. A method for fixing the watch glass on a watch case comprising at least one case base (2) with a predetermined relative positioning angle, comprising the following steps:

(a) A positioning groove (14) is directly provided on the groove edge (10) of the watch glass (16) for fastening to the case seat (2);

(b) A protruding angle (22) corresponding to said groove (14) is directly provided on the shell seat (2), and its shape can make it engage in the groove,

(c) Place the watch glass (6) on the case base (2), aligning said notches (14) with said protruding corners (22) so that they engage each other and make the watch glass (6) fixed on the housing (1).

2. The method according to claim 1, characterized in that in step (a) said notch (14) is V-shaped at least in its upper part and extends radially relative to the watch glass (6), which The opening is towards the free end face (E).

3. The method according to claim 2, characterized in that the groove (14) is shaped like an isosceles triangle with an apex angle (A) of approximately 90°.

4. The method according to claim 3, characterized in that the shape of the protruding horn (22) in step (b) forms an isosceles triangle with an apex angle (B) of about 80° at least in its upper part.

5. The method according to any one of the preceding claims, characterized in that: the watch glass (6) and the shell seat (2) are heat weldable materials, and in step (c) the watch glass (6) passes through it The edge is heat seal welded to the case seat (2), the edge of which coincides with the material of the housing, while the notch (14) and the prongs (22) are heat seal welded and the free edge of the watch glass is welded to on the shell seat (2).

6. A watch comprising

a watch case (1); having at least one case seat (2),

A watch glass (6) installed on the watch case (1);

a device for securing the watch glass (6) to the base (2) of the watch case (1); and

An angular positioning device for mounting the watch glass (6) on the case base (2);

It is characterized in that, on the one hand, the angle positioning device includes a notch (14) directly arranged on the groove edge (10) of the watch glass, and on the other hand, it also includes a protruding angle (22) directly arranged on the case seat (2) , and the lug engages said notch (14).

7. Watch according to claim 6, characterized in that said notch (14) is arranged at the outermost radial position of the crystal.

8. The watch as claimed in claim 6 or 7, characterized in that the notch (14) opens laterally towards the outside and the inside relative to the watch glass (6).

9. The watch according to claim 7 or 8, characterized in that: said notch (14) is made into a V-shaped groove at least on its upper part, and extends along the radial direction of the watch glass (6), and its opening facing the shell.

10. Watch according to claim 9, characterized in that said notch (14) is in the shape of an isosceles triangle.

11. The watch according to claim 10, characterized in that the apex angle (A) of said notch is chosen between 85° and 95°.

12. Watch according to claim 11, characterized in that the apex angle (A) of said notch (14) has an angle of 90°.

13. The watch as claimed in claim 11 or 12, characterized in that said horn (22) presents, at least in its upper part, the shape of an isosceles triangle with an apex angle (B) of 80°.

14. Watch according to any one of claims 6 to 13, characterized in that said positioning means (14, 22) form an integral part of the means for fixing the watch glass to the bezel (2) of the case .

15. The watch according to claim 14, characterized in that said case base (2) and said watch glass (6) are made of heat-weldable materials, said notch (14) and said The above-mentioned protruding horns (22) are welded together.