GB2273736A - Buckle for watch bands. - Google Patents
Buckle for watch bands. Download PDFInfo
- Publication number
- GB2273736A GB2273736A GB9324667A GB9324667A GB2273736A GB 2273736 A GB2273736 A GB 2273736A GB 9324667 A GB9324667 A GB 9324667A GB 9324667 A GB9324667 A GB 9324667A GB 2273736 A GB2273736 A GB 2273736A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- push plates
- buckle
- push
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/18—Fasteners for straps, chains or the like
- A44C5/22—Fasteners for straps, chains or the like for closed straps
- A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/18—Fasteners for straps, chains or the like
- A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
- A44C5/2052—Fasteners provided with at least one push-button acting parallel to the main plane of the fastener and perpendicularly to the direction of the fastening
Landscapes
- Buckles (AREA)
- Toys (AREA)
- Assembled Shelves (AREA)
Abstract
A buckle has an upper plate 21 rotatably connected to an end of a first band member, a middle plate connected to the upper plate, and a lower plate 27 rotatably connected to the middle plate and rotatably connected to a second band member. A guide frame is secured to an underside of the upper plate, and a pair of push plates 37, 38 are slidably mounted in the guide frame. A pair of springs are provided between the push plates for outwardly urging the push plates respectively. One of the push plates has an upper thin plate portion and the other push plate has a lower thin plate portion. Both the thin plate portions are overlapped each other. Each push plate has a downwardly slanting chamfer 37c, 38c. An engaging projection 30 is provided on the lower plate to be projected to the push plates. The engaging projection has a pair of upwardly slanting chamfers 30a, 30a' and hooks formed on an underside of the upwardly slanting chamfer portions. The upward slanting chamfer portions are engaged with the downward slanting chamfer portions so as to inwardly move the push plates when the upper plate is pivoted toward the lower plate. The hooks engage with the push plates when the hooks pass the downward slanting chamfer portions. <IMAGE>
Description
BUCKLE FOR WATCH BANDS
The present invention relates to a buckle for watch bands, and more particularly to a triple-fold type buckle having a pair of push plates for locking the buckle.
Japanese Utility Model Application Laid-open No.
59-70514 discloses a triple-fold type buckle having a pair of push plates for locking the buckle.
Figs. 11 to 13 show the buckle. The buckle comprises an upper plate 1 connected to one of the watch bands (not shown), a middle plate 11 connected to the upper plate, and a bottom plate 12 connected to the middle plate and to the other band. The upper plate 1 comprises a top plate la and opposite side plates 2.
Each side plate 2 has a rectangular opening 3 formed in a central portion thereof.
A pair of lateral plates 4 are laterally provided between the side plates 2 opposite to each other. An upper plate 5 and a lower plate 6 are provided between the lateral plates 4 at a predetermined distance there-between so that a space is defined by the lateral plates and upper and lower plates formed therein.
A pair of push plates 8 are slidably mounted in the space and a pair of springs 9 are provided between the push plates 8 at both sides thereof so as to urge the push plates outwardly. Each push plate 8 has a manipulating portion 7 projected from the opening 3 of the side plate 2, and a hole 16 formed on an inner portion thereof. Each of the upper and lower plates 5 and 6 has a pair of holes 15 formed corresponding to the holes 16 of the push plates 8.
The upper plate 1 is further provided with a pair of connecting lugs 10 formed on the underside of the top plate la at an end portion thereof. An end of the middle plate 11 is pivotally mounted on a lateral pin 10a provided between the connecting lugs 10.
The bottom plate 12 comprises a pair of plate portions 12a formed apart a predetermined distance from each other to be engaged with the sides of the middle plate 11. Each end of the plate portions 12a is extended over the connecting lugs 10 of the upper plate 1 and a band connecting link 18 is secured to the ends.
The other ends of the plate portions 12a are pivotally connected to the other end of the middle plate 11 by a lateral pin.
The bottom plate 12 further has a pair of engaging projections 13 formed on the plate portions 12a corresponding to the holes 16 of the push plates 8 to be engaged with the holes. Each engaging projection 13 comprises a stem 14 and a conical head 13a.
When locking the buckle, the upper plate 1 and the middle plate 11 are folded on the bottom plate 12 so that the middle plate 11 engages with the plate portions 12a of the bottom plate, while the conical head 13a of each engaging projection 13 is inserted in the hole 16 of each push plate 8 passing through the hole 15 of the lower plate 6. As shown in Fig. 13, the conical heads 13a engage with slants 16a of the holes 16 to inwardly push the push plates 8 against the elastic forces of the springs 9. When conical heads 13a pass the slants 16a, the push plates are returned by the springs 9 and engaged with the stems 14 of the engaging projections 13. Thus, the upper plate 1 is locked to the bottom plate 12.
When releasing the locking of the buckle, the manipulating portions 7 of the push plates 8 are pushed at the same time against the elastic forces of the springs 9 so that the holes 16 are moved to disengage the conical heads 13a of the engaging projections 13 from the holes.
In such a buckle, since two engaging projections are provided, it is necessary to accurately adjust the position between the engaging projections 13 and the holes 16 of the push plates 8. Furthermore, since the push plates 8 and springs 9 are arranged in a plane in the space of the upper plate 1, the width of the buckle is increased in the lateral direction of the band. Such a buckle is not available for the lady's watch having a small width.
An object of the present invention is to provide a triple-fold type buckle which is reduced in size and may be easily manufactured.
According to the present invention, there is provided a buckle for a watch band, the buckle including an upper plate having opposite side plates, each of which has an opening, a middle plate connected to the upper plate at an end thereof, a lower plate pivotally connected to the other end of the middle plate.
The buckle has a guide frame secured to an underside of the upper plate, a pair of push plates slidably mounted in the guide frame so as to slide in the lateral direction with respect to the longitudinal direction of the band, one of the push plates having an upper thin plate portion at an inner portion thereof, the other push plate having a lower thin plate portion at an inner portion thereof, both the thin plate portions being overlapped each other, spring means provided between the push plates for outwardly urging the push plates respectively, stopping means for stopping each of the push plates at a position where an outer end portion of the push plate is projected from the opening of the side plate of the upper plate so as to be operated by a finger of a wearer, each push plate having an engaging portion and a downward slant formed on an underside of the engaging portion, an engaging projection provided on the lower plate to be projected to the push plates, the engaging projection having upward slant means and hook means formed on an underside of the upward slant means.
The upward slant means is engaged with the downward slants so as to inwardly move the push plates when the upper plate is pivoted toward the lower plate. The hook means engages with engaging portions of the push plates when the hook means passes the downward slants.
The upward slant means comprises a pair of upward slants and the hook means comprises a pair of hooks levels of which are different from each other corresponding to levels of the engaging portions of the push plates.
The stopping means comprises a pin secured to the guide frame and a hole formed in each of the push plates engaged with the pin.
These and other objects and features of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings, in which
Fig. 1 is a sectional plan view showing a triple-fold type buckle according to the present invention;
Fig. 2 is a sectional view of the buckle taken along a line II-II of Fig. 1;
Fig. 3 is a sectional view of the buckle taken along a line III-III of Fig. 1;
Fig. 4 is a sectional side view of the buckle in a disengaged state;
Fig. 5 is a sectional plan view showing a buckle of a second embodiment of the present invention;
Fig. 6 is a sectional view of the buckle taken along a line VI-VI of Fig. 5;
Fig. 7 is a sectional view of the buckle taken along a line VII-VII of Fig. 5;
Fig. 8 is a sectional plan view showing a buckle of a third embodiment;;
Fig. 9 is a sectional view of the buckle taken along a line IX-IX of Fig. 8;
Fig. 10 is a sectional view of the buckle taken along a line X-X of Fig. 8;
Fig. 11 is a sectional plan view of a conventional buckle;
Fig. 12 is a side view of the conventional buckle; and
Fig. 13 is a sectional view of the conventional buckle.
Referring to Figs. 1 to 4, a triple-fold type buckle of the present invention comprises an upper plate 21 connected to a first band member 23 of a watch band, a lower plate 27 connected to a second band member 28, and a middle plate 26 connected to the upper plate 21 and the lower plate 27.
The upper plate 21 has a pair of side plates 21a integral therewith, and a guide frame 22 having a
U-shaped section. Each side plate 21a has a rectangular notch 21b formed in a central portion thereof. The guide frame 22 is engaged with the notches 21b and secured to the underside of the upper plate 21 by brazing. Thus, a space is formed between the upper plate 21 and the guide frame 22. The upper plate 21 is connected to the first band member 23 by a spring-loaded pin 24 engaged with holes of the side plates 21a.
A connecting link 25 is secured to the underside of the guide frame 22 by brazing. An end of the middle plate 26 is connected to the connecting link 25. The other end of the middle plate is pivotally connected to an end of the lower plate 27 by a lateral pin 26a.
The lower plate 27 has a U-shaped frame portion 27a (Fig. 3) and a pair of connecting lugs 27b each of which has a pin hole are formed at the other end. The second band member 28 is connected to the connecting lugs 27b by a spring-loaded pin 29. The lower plate 27 further has a T-shaped engaging projection 30 formed in the central portion of the frame portion 27a by cutting and bending the plate. The engaging projection 30 has guide slants 30a and 30a' formed on the top thereof opposite to each other, and hooks 30b and 30b' formed on the underside of the respective slants 30a and 30a' at a different level in the vertical direction.
Alternatively, the engaging projection 30 may be secured to the lower plate 27 by brazing.
A pair of push plates 31 and 32 are slidably mounted in the space in the guide frame 22 so as to be moved in the lateral direction of the band. The push plate 31 has a manipulating projection 31a projected from the upper plate 21, an oval hole 31c, a step portion 31b, and an upper thin plate portion 37 extending from the step portion 31b. The upper thin plate portion 37 has a rectangular opening 37a formed corresponding to the engaging projection 30 of the lower plate 27. The opening 37a has an engaging portion 37b having a downward slant 37c. The push plate 32 has a manipulating projection 32a projected from the upper plate 21, an oval hole 32c, a step portion 32b, and a lower thin plate portion 38 extending from the step portion 32b. The lower thin plate portion 38 has a rectangular opening 38a formed corresponding to the opening 37a and the engaging projection 30.The opening 38a has an engaging portion 38b having a downward slant 38c.
Each of the upper and lower thin plate portions is formed by forging or cutting the plate.
Corresponding to the engaging projection 30, the upper plate 21 has a recess 21c and the guide frame 22 has an opening 22a.
In assembling, the upper thin plate portion 37 of the push plate 31 is mounted on the lower thin plate portion 38 of the push plate 32 to be slidably engaged with each other. The openings 37a and 38a are disposes so as to correspond to each other and to correspond to the engaging projection 30 at the engaging portions 37b and 38b. A pair of springs 33 and 34 are attached to both sides between steps 31d and 32d of the push plates 31 and 32 so as t6 outwardly urge the push plates. The combined push plates 31 and 32 are inserted into the space in the guide frame 22 together with the springs 33 and 34. A pair of stopper pins or screws 35 and 36 are secured to the guide frame 22 and engaged with the oval holes 31c and 32c of the respective push plates 31 and 32.Each of the push plates is stopped by the stopper pin at a position where the manipulating projection is projected from the upper plate 21. Thus, the push plates are prevented from removing from the upper plate.
Describing the use of the buckle, it is assumed that the lock of the buckle is released. The middle plate 26 connected to the upper plate 21 is opened about the pin 26a from the lower plate 27 to expand the buckle, and the first and second band members 23 and 28 are applied to a wrist of the wearer.
The upper plate 21 connected to the middle plate 26 is pushed to the lower plate 27 so that the middle plate 26 is pressed on the lower plate 27. As shown in Fig.
3, the top of the engaging projection 30 of the lower plate 27 is inserted into the opening 38a of the push plate 32 and the opening 37a of the push plate 31 passing through the opening 22a of the guide frame 22.
The slants 30a and 30a' of the engaging projection 30 are respectively engaged with the slants 38c and 37c of the engaging portions 38b and 37b of the respective openings. Thus, the push plates 31 and 32 are inwardly pushed by the slants against the elastic forces of the springs 33 and 34. When the slants 30a and 30a' pass the slants 38c and 37c, the engaging portions 38b and 37b are returned by the springs and engaged with the hooks 30b and 30b' of the projection 30, respectively.
Thus, the upper plate 21 is locked to the lower plate 27. In this state, the top of the engaging projection 30 is disposed in the recess 21c of the upper plate 21.
When releasing the lock, the manipulating projections 31a and 32a of the push plates 31 and 32 are pushed at the same time so that the engaging projection 30 is disengaged from the engaging portions 37b and 38b.
Thus, the upper plate 21 is released from the lower plate 27.
In accordance with the present invention, the buckle is locked by the single engaging projection so that the adjustment of positioning is not necessary.
Furthermore, the push plates are partially overlapped with each other. Thus, the thickness and width of the buckle are reduced to be available for the lady's watch having a small width.
Figs. 5 to 7 show the buckle of the second embodiment. Parts which are the same as the first embodiment are identified with the same reference numerals as Figs. 1 to 4.
The buckle of the second embodiment comprises a base plate 40. The end of the middle plate 26 is pivotally connected to the base plate 40 by a lateral pin 41. The other end of the base plate is pivotally connected to a lower plate 47 by a lateral pin 42. The lower plate 47 has connecting lugs 47a for the second band member 28. The engaging projection 30 provided on the lower plate is the same as the previous one, except for the length of the stem thereof. The stem is shorter than that of the first embodiment.
Describing the use of the buckle, the lower plate 47 and the middle plate 26 connected to the upper plate 21 are widely opened about the pins 42 and 41 in the opposite directions against the base plate 40. When the buckle is folded, the middle plate 26 and the lower plate 47 are pressed on the base plate 40.
The locking operation and release operation are the same as the first embodiment.
Referring to Figs. 8 to 10 showing the third embodiment, the buckle comprises an upper plate 51 connected to the first band member 23 by the pin 24, a lower plate 57 connected to the second band member 28 by the pin 29, and a middle plate 56 connected to the upper plate 51 through the connecting link 25 and the lower plate 57 by the pin 26a.
The upper plate 51 has a pair of side plates 51a.
Each side plate 51a has a series of adjusting holes 52 to adjust the effective length of the first band member 23. The length is adjusted by changing the hole 52 to be engaged with the pin 24. In the embodiment, the lengths of the middle and lower plates 56 and 57 are elongated corresponding to the side plates 51a of the upper plate 51.
Other structures are the same as the first embodiment and the same parts thereof are identified with the same reference numerals as Figs. 1 to 4.
Claims (8)
1. A buckle for a watch band, the buckle including an upper plate having opposite side plates, each of which has an opening, a middle plate connected to said upper plate at an end thereof, a lower plate pivotally connected to the other end of said middle plate, the buckle comprising
a guide frame secured to an underside of said upper plate;
a pair of push plates slidably mounted in said guide frame so as to slide in the lateral direction with respect to the longitudinal direction of the band;
one of the push plates having an upper thin plate portion at an inner portion thereof;
the other push plate having a lower thin plate portion at an inner portion thereof;
both the thin plate portions being overlapped each other;
spring means provided between the push plates for outwardly urging the push plates respectively;;
stopping means for stopping each of the push plates at a position where an outer end portion of the push plate is projected from the opening of said side plate of the upper plate so as to be operated by a finger of a wearer;
each push plate having an engaging portion and a downward slant formed on an underside of the engaging portion;
an engaging projection provided on said lower plate to be projected to the push plates, the engaging projection having upward slant means and hook means formed on an underside of the upward slant means and being arranged such that the upward slant means is engaged with said downward slants so as to inwardly move the push plates when the upper plate is pivoted toward the lower plate, and that the hook means engages with engaging portions of the push plates when the hook means passes the downward slants.
2. The buckle according to claim 1, wherein
said upward slant means comprises a pair of upward slants and said hook means comprises a pair of hooks levels of which are different from each other corresponding to levels of the engaging portions of the push plates.
3. The buckle according to claim 1, wherein
said stopping means comprises a pin secured to the guide frame and a hole formed in each of the push plates engaged with the pin.
4. The buckle according to claim 1, wherein
each of the push plates has a rectangular opening and said downward slant is formed on an inner side edge of the opening.
5. The buckle according to claim 1, wherein
said spring means comprises a pair of spring disposed on both sides of the push plates.
6. The buckle according to claim 1, wherein
said middle plate is connected to the lower plate through a base plate.
7. A buckle for a watch band substantially as hereinbefore described with reference to Figs. 1 - 4, or Figs. 5 - 7, or Figs. 8 - 10 of the accompanying drawings.
8. A watch band having a buckle as claimed in any one of Claims 1 - 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992090151U JP2596491Y2 (en) | 1992-12-08 | 1992-12-08 | Tri-fold Nakadome structure |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9324667D0 GB9324667D0 (en) | 1994-01-19 |
| GB2273736A true GB2273736A (en) | 1994-06-29 |
| GB2273736B GB2273736B (en) | 1995-11-22 |
Family
ID=13990501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9324667A Expired - Fee Related GB2273736B (en) | 1992-12-08 | 1993-12-01 | Buckle for watch bands |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2596491Y2 (en) |
| CN (1) | CN1083254C (en) |
| GB (1) | GB2273736B (en) |
| HK (1) | HK163896A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19620838A1 (en) * | 1995-05-31 | 1996-12-05 | Hattori Seiko Co Ltd | Band lock |
| WO2000069301A1 (en) | 1999-05-13 | 2000-11-23 | Citizen Watch Co., Ltd. | Center arrester of band-shaped ornament and band-shaped ornament |
| WO2006079605A1 (en) * | 2005-01-25 | 2006-08-03 | Tag Heuer Sa | Unfolding clasp for wrist band |
| CH699067A1 (en) * | 2008-07-01 | 2010-01-15 | Elfix Production Sa | Length fine adjustment device for watch strap, has ball element engaging one of two borings for fixing support to opening and closing cover, where borings respectively define two fine adjustment positions of strand of strap |
| WO2019029792A1 (en) * | 2017-08-08 | 2019-02-14 | Baby Dan A/S | Child safety lock apparatus for preventing access to the interior of the cabinet or drawer |
| RU208492U1 (en) * | 2021-07-12 | 2021-12-21 | Ольга Анатольевна Лазарева | FASTENER LOCK |
| RU221868U1 (en) * | 2023-10-12 | 2023-11-28 | Общество С Ограниченной Ответственностью "Грант" | Jewelry castle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2534970B1 (en) * | 2011-06-16 | 2014-04-16 | Montres Breguet SA | Triple-opening clasp |
| WO2017096593A1 (en) * | 2015-12-10 | 2017-06-15 | 华为技术有限公司 | Watch band and watch having same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0529607Y2 (en) * | 1987-04-03 | 1993-07-29 |
-
1992
- 1992-12-08 JP JP1992090151U patent/JP2596491Y2/en not_active Expired - Lifetime
-
1993
- 1993-12-01 GB GB9324667A patent/GB2273736B/en not_active Expired - Fee Related
- 1993-12-08 CN CN 93120785 patent/CN1083254C/en not_active Expired - Fee Related
-
1996
- 1996-09-05 HK HK163896A patent/HK163896A/en not_active IP Right Cessation
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19620838A1 (en) * | 1995-05-31 | 1996-12-05 | Hattori Seiko Co Ltd | Band lock |
| US5735629A (en) * | 1995-05-31 | 1998-04-07 | Seiko Kabushiki Kaisha | Band connection fitting |
| ES2130938A1 (en) * | 1995-05-31 | 1999-07-01 | Hattori Seiko Co Ltd | Band connection fitting |
| EP1147721A4 (en) * | 1999-05-13 | 2007-03-14 | Citizen Watch Co Ltd | Center arrester of band-shaped ornament and band-shaped ornament |
| EP1147721A1 (en) * | 1999-05-13 | 2001-10-24 | Citizen Watch Co. Ltd. | Center arrester of band-shaped ornament and band-shaped ornament |
| WO2000069301A1 (en) | 1999-05-13 | 2000-11-23 | Citizen Watch Co., Ltd. | Center arrester of band-shaped ornament and band-shaped ornament |
| WO2006079605A1 (en) * | 2005-01-25 | 2006-08-03 | Tag Heuer Sa | Unfolding clasp for wrist band |
| KR100897732B1 (en) | 2005-01-25 | 2009-05-15 | 태그-호이어 에스.에이. | Unfolding clasp for wrist band |
| US7748087B2 (en) | 2005-01-25 | 2010-07-06 | Lvmh Swiss Manufactures Sa | Unfolding clasp for wrist band |
| CH703540B1 (en) * | 2005-01-25 | 2012-02-15 | Lvmh Swiss Mft Sa | Folding clasp for bracelet and method of assembling such a clasp. |
| CH699067A1 (en) * | 2008-07-01 | 2010-01-15 | Elfix Production Sa | Length fine adjustment device for watch strap, has ball element engaging one of two borings for fixing support to opening and closing cover, where borings respectively define two fine adjustment positions of strand of strap |
| WO2019029792A1 (en) * | 2017-08-08 | 2019-02-14 | Baby Dan A/S | Child safety lock apparatus for preventing access to the interior of the cabinet or drawer |
| RU208492U1 (en) * | 2021-07-12 | 2021-12-21 | Ольга Анатольевна Лазарева | FASTENER LOCK |
| RU221868U1 (en) * | 2023-10-12 | 2023-11-28 | Общество С Ограниченной Ответственностью "Грант" | Jewelry castle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1083254C (en) | 2002-04-24 |
| JPH0646513U (en) | 1994-06-28 |
| JP2596491Y2 (en) | 1999-06-14 |
| HK163896A (en) | 1996-09-13 |
| GB2273736B (en) | 1995-11-22 |
| CN1097292A (en) | 1995-01-18 |
| GB9324667D0 (en) | 1994-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |