EP3241591A1 - Yoke for a ball game racket - Google Patents

Abstract

The invention relates to a bridge for a ball game racket and a ball game racket frame with bridge.

Description

The present invention relates to a bridge for a ball game racket and a ball game racket with the bridge according to the invention.

Racket frames for ball game rackets typically include a handle portion, a club head, and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the handle portion and a bridge. The bridge takes over several, essential for the playing behavior of the ball game rackets functions. On the one hand, the bridge usually absorbs several longitudinal strings of the clothing and thus influences the behavior of the clothing. In particular, for geometric reasons, these are the central longitudinal strings that run through the so-called "sweet spot" and thus have a decisive influence on the player's perceived feel of the game. Furthermore, the bridge closes the club head to an annular structure, which has a decisive influence on the deformability of the club head. Furthermore, the bridge also stabilizes the two frame spars and thus affects the overall stability of the ball game racket frame.

Against this background, there were already different approaches to optimize the bridge of a ball game racket with regard to different properties. For example, the DE 10 2007 056 831 A1 a bridge with a joint, with the help of which targeted and controlled the deformation behavior of the racket can be adjusted. A similar approach follows the DE 28 12 647 which discloses a perpendicular to the plane of the racket elastically deflectable centerpiece. From the US 4,828,259 is a double bridge with a damping material known.

Nevertheless, there remains a need to further optimize the bridge of a ball racket frame with respect to its mechanical requirements. This object is achieved by a bridge according to claim 1. Preferred embodiments of the bridge according to the invention (as well as the ball game racket according to the invention with the bridge according to the invention) are described in the dependent claims and in the aspects.

Accordingly, the invention is directed to a bridge for a ball game racket, the bridge having a central portion and two edge portions intended to be connected to the frame of a ball game racket. At least one lower web and at least two upper webs extend from the middle section on both sides to the two edge sections. The middle section has first passage openings for receiving longitudinal strings. At least two further passage openings for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them extend in each case between the corresponding two upper webs.

The directions "down" and "up" refer to the orientation of the bridge in the assembled state, ie, when the bridge is connected to the rest of the frame of a ball game racket, the ball game racket is oriented so that the handle portion below and the club head located at the top. In other words, the two lower webs are on the handle portion facing side of the bridge and the four upper webs on the head portion facing side of the bridge.

The middle section together with the two lower webs preferably has the function of a regular bridge, wherein in particular the central section has passage openings for receiving longitudinal strings and is preferably provided for deflecting one or more longitudinal strings in the region of the central section. Preferably, the two lower webs also each have passage openings for receiving longitudinal strings, wherein the longitudinal strings do not necessarily have to be deflected in the region of the lower webs. Rather, one or more longitudinal strings can each be passed through one of the lower webs and up to the corresponding frame members of the ball game racket frame. The at least four upper webs are preferably not the recording or deflection of strings, but rather the stabilization of the bridge through a connection further up the club head. If a regular bridge were tied into a similar section of the clubhead, this would disadvantageously shorten the length of the string. At the same time, the connection of the bridge to the racket frame by means of the four upper webs and the two lower webs on the one hand allows a good application of force acting on the bridge forces in the club head and on the other hand excellent stabilization against torsional deformation. For this purpose, it is preferred that the bridge is formed substantially mirror-symmetrical, wherein in the assembled state of the bridge, the string plane formed by the covering forms the associated Speigelfläche. Preferably, the bridge is designed such that the longitudinal strings to be received by the at least two second through openings each extend without contact between the corresponding two upper webs. This ensures that the bridge is stored by the four upper webs accordingly stable on the club head, without the string length of the longitudinal strings would be adversely shortened. However, embodiments are also possible in which a damping material is provided in each case between the two upper webs. In other words, the longitudinal strings are admittedly received by the middle section and optionally the two lower webs, but the strings can indirectly, for example via a damping element, also be in contact with the four upper webs.

The webs are preferably geometrically separate elements, which are preferably spaced from each other. It is preferred that each of the lower web between the central portion and the corresponding edge portion is connected to neither of the two upper webs. Furthermore, the two upper webs between the middle section and the corresponding edge section are preferably not connected to each other. Preferably, the distance between the two upper webs at least in sections at least 5 mm, preferably at least 10 mm and more preferably at least 15 mm, wherein the distance between two opposite outer surfaces of the webs, measured perpendicular to the clothing plane is meant. In other words, the distance between the webs corresponds to the extent of the gap between the two webs.

It is further preferred that the projection of the distance between in each case one of the upper webs and the lower web is at least partially at least 5 mm, preferably at least 10 mm and particularly preferably at least 15 mm, on the clothing plane formed by the clothing. Also, this distance is to be understood as a distance between the opposite outer surfaces of the respective webs and thus refers to the dimensions of the gap between adjacent webs (projected on the string plane). In other words, a passage opening is formed in each case between the two upper webs and the lower web, which appears in a viewing direction perpendicular to the clothing plane as a passage opening. The visible cross-sectional area of this passage opening is preferably at least 1.5 cm ² , more preferably at least 2 cm ² and more preferably at least 2.5 cm ² . The bridge structure makes the bridge not only lighter overall, but also acts through the through holes formed between the webs less massive and therefore provides a particularly aesthetic overall impression. Furthermore, the passage openings are also aerodynamically advantageous.

In order to keep the expansions of the central portion of the bridge as small as possible, but on the other hand to allow connection of the upper webs as far above the club head, it is preferred that the distance between each one of the two upper webs and the lower web from the center distance to the corresponding edge portion increases. It is further preferred that in each case the distance between the two upper webs increases from the middle section to the corresponding edge section in order to make the middle section of the bridge as narrow as possible, but on the other hand to connect the two upper webs in the region of the outer sides of the frame section forming the club head enable.

In principle, the two edge portions of the bridge can each be formed by the outer ends of the webs, wherein the outer ends of the webs of both edge portions can be connected to each other or can be separated from each other. The edge portions of the bridge or these outer web ends can then be connected in any way with the rest of the frame of the ball game racket, for example by screwing, welding, gluing, etc. It is particularly preferred, however, that at the two edge portions each connection tabs are provided which are suitable to connect the bridge as large as possible with a racquet frame. Particularly preferably, these connection straps are designed such that they allow a connection with a racket frame to be produced by means of a tubular blowing method. For this purpose, it is preferred that the attachment tabs each have a concave outer surface. It is further preferred that the attachment tabs have an outer surface which is preferably at least 10 cm ² , more preferably at least 15 cm ² and most preferably at least 20 cm ² . Preferably, in each case at least one of the second passage openings is arranged in each case in one of the connection lugs. This makes it possible to guide a longitudinal string through a passage opening in the attachment tab and a corresponding passage opening in the corresponding frame spar of the ball game racket and, for example, to deflect a string on the frame spar.

Additionally or alternatively, the attachment tabs may each have at least one, preferably two third passage openings for receiving longitudinal and / or transverse strings. In other words, the connection tab may have one or more further passage openings, wherein the longitudinal and / or transverse strings received by these passage openings do not have to pass between the two upper bridges.

Preferably, all webs open on one side of the bridge in a common connection tab. However, it is also possible to provide a plurality of connecting straps per side, for example a connecting strap for the upper webs and a common connecting strap for the two lower webs. Alternatively, a separate connection tab could be provided for each bridge.

Since the middle section is arranged centrally in the bridge and, accordingly, the longitudinal strings accommodated by the central section run through the so-called "sweet spot", the mechanical properties of this central section are essential for the playing behavior of the ball game racket. In principle, this middle section can be designed as a solid solid body with, for example, an approximately round, elliptical, rectangular or similar cross-sectional profile. However, it is preferred that the middle section is channel-shaped. This allows the production of a particularly stable bridge in lightweight construction. Furthermore, such a channel-shaped structure allows an extension of the corresponding longitudinal strings without sacrificing the stability of the bridge. The sides of the channel-shaped central portion may be formed as a continuous side wall or as a truss structure. The latter is particularly advantageous with regard to the lowest possible weight of the bridge. The channel-shaped middle section also has two opposite edges, from which the webs extend to the edge sections of the bridge. The gutter is preferably closed at these opposite edges in each case by means of an end wall, so that the gutter has a pot-like structure with four (partially interrupted) surrounding walls. The bottom of the channel preferably has at least two, more preferably at least three, particularly preferably at least four passage openings for receiving longitudinal strings.

The extension of the middle section of the bridge in a direction perpendicular to The fabric tension level is preferably less than 20 mm, more preferably less than 15 mm and particularly preferably less than 13 mm. The wall thickness of the continuous side wall or truss structure of the channel is, at least in sections, preferably less than 5 mm, more preferably less than 4 mm and particularly preferably less than 3 mm. The extension of the middle section along the racket longitudinal axis (ie from the handle section to the head section) is, at least in sections, preferably greater than 10 mm, more preferably greater than 12 mm. The gutter-shaped central portion can also be divided by an intermediate wall into two pot-like sections.

The upper and / or lower webs of the bridge may be relatively filigree structures, as the stability of the bridge is ensured inter alia by the presence of a plurality of spaced-apart webs. Thus, the cross-sectional area of the lower web and / or the upper webs is at least partially preferably less than 50 mm ² , more preferably less than 40 mm ² and particularly preferably less than 30 mm ² . The cross-sectional area of one or more of the webs preferably increases from the middle section of the bridge to the edge section of the bridge. It is further preferred that the cross-sectional area of the lower web, at least in sections, is greater than the cross-sectional area of the upper webs.

At least some of the through openings and preferably all through openings are designed to receive a single string in each case. Accordingly, some and preferably all through-holes preferably have a cross-sectional area of less than 5 mm ² , more preferably less than 4 mm ^2, and most preferably less than 3 mm ² . It is further preferred that in each case at least one of the second passage openings is arranged in each case one of the lower webs. Preferably, at least one of the second passage openings, which is arranged in one of the lower webs, extends from the upper side of the lower web to the edge section or to the connection tongue of the bridge, so that a longitudinal string of the clothing is guided through the lower web and through a frame spar of the racket frame can.

In a preferred embodiment of the present invention extend from the central portion of the bridge on both sides in each case two lower webs to the two edge portions. In this embodiment, it is preferable that the longitudinal strings to be received by the second through holes each between the corresponding ones two lower webs run through. Preferably, in this case, the second passage openings are provided in the connection tabs of the bridge.

Preferably, the bridge according to the invention is integrally formed. Furthermore, the bridge according to the invention is preferably designed as a metal casting, more preferably as a metal injection molded part. In principle, different light metals, such as, for example, aluminum, aluminum alloys, titanium or titanium alloys, are suitable for this purpose. However, it is particularly preferred that the bridge is made of a magnesium alloy. For example, suitable magnesium alloys (such as SAE SiC / AZ91) can be used to produce particularly stable bridges that can be extremely light at the same time. Preferably, the total weight of the bridge according to the invention is less than 35 g, more preferably less than 30 g, and most preferably less than 25 g.

The present invention is further directed to a ball game racket having a racket frame having a handle portion, a club head and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the handle and a bridge as described above. The ball game racket is preferably further provided with a string formed by longitudinal and transverse strings, wherein at least a first longitudinal string is passed through a through hole in the central portion of the bridge and at least one second longitudinal string through a through hole of the two lower webs of the bridge. The two second longitudinal strings preferably run in each case between the corresponding two upper webs of the bridge. The racket frame is preferably designed as a carbon fiber hollow profile and formed directly on the bridge.

According to an alternative preferred embodiment, the two further second through openings do not necessarily have to be provided in the bridge (for example in the attachment tabs). Rather, the corresponding longitudinal strings can also be recorded directly from passage openings in frame members of the ball game racket. Accordingly, the present invention is also directed to a ball game racket with a racquet frame having a handle portion, a club head and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the grip portion and a bridge. The bridge has a central portion and two edge portions which coincide with the frame of the Ball game rackets are connected. At least one lower web and at least two upper webs extend from the middle section on both sides to the two edge sections. The middle section has first passage openings for receiving longitudinal strings. Furthermore, at least two further second passage openings in the two frame members for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them extend in each case between the corresponding two upper webs.

All the preferred features discussed above can also be used according to the invention in this alternative embodiment. In particular, in this embodiment it is preferred that two lower webs each extend from the middle section to the two edge sections on both sides. Preferably, the longitudinal strings to be received by the second passage openings then extend in each case also between the corresponding two lower webs.

1. 1. Brücke für einen Ballspielschläger, wobei die Brücke einen Mittelabschnitt und zwei Randabschnitte aufweist, die dazu vorgesehen sind, mit dem Rahmen eines Ballspielschlägers verbunden zu werden, wobei sich von dem Mittelabschnitt beidseitig jeweils ein unterer Steg und zwei obere Stege zu den beiden Randabschnitten erstrecken, wobei der Mittelabschnitt erste Durchgangsöffnungen zur Aufnahme von Längssaiten aufweist und wobei mindestens zwei weitere zweite Durchgangsöffnungen zur Aufnahme von Längssaiten derart angeordnet sind, dass die von ihnen aufzunehmenden Längssaiten jeweils zwischen den entsprechenden zwei oberen Stegen hindurch verlaufen.
2. 2. Brücke nach Aspekt 1, wobei die von den mindestens zwei zweiten Durchgangsöffnungen aufzunehmenden Längssaiten jeweils berührungslos zwischen den entsprechenden zwei oberen Stegen hindurch verlaufen.
3. 3. Brücke nach Aspekt 1 oder 2, wobei jeweils der untere Steg zwischen dem Mittelabschnitt und dem entsprechenden Randabschnitt mit keinem der beiden oberen Stege verbunden ist.
4. 4. Brücke nach einem der vorigen Aspekte, wobei jeweils die beiden oberen Stege zwischen dem Mittelabschnitt und dem entsprechenden Randabschnitt nicht miteinander verbunden sind.
5. 5. Brücke nach einem der vorigen Aspekte, wobei jeweils der Abstand zwischen den beiden oberen Stegen vom Mittelabschnitt zum entsprechenden Randabschnitt hin zunimmt.
6. 6. Brücke nach einem der vorigen Aspekte, wobei jeweils zwischen den beiden oberen Stegen und dem unteren Steg eine Durchgangsöffnung senkrecht zu einer durch die Bespannung definierte Ebene gebildet wird, deren Querschnittfläche bevorzugt mindestens 1,5 cm², stärker bevorzugt mindestens 2 cm² und besonders bevorzugt mindestens 2,5 cm² beträgt.
7. 7. Brücke nach einem der vorigen Aspekte, wobei an den beiden Randabschnitten jeweils Anbindungslaschen vorgesehen sind, die dazu geeignet sind, die Brücke an einem mittels Schlauchblasverfahren herzustellenden Schlägerrahmen anzubinden.
8. 8. Brücke nach Aspekt 7, wobei die Anbindungslaschen jeweils eine konkave Außenfläche aufweisen, die bevorzugt mindestens 10 cm², stärker bevorzugt mindestens 15 cm² und besonders bevorzugt mindestens 20 cm² beträgt.
9. 9. Brücke nach Aspekt 7 oder 8, wobei jeweils mindestens eine der zweiten Durchgangsöffnungen in jeweils einer der Anbindungslaschen angeordnet ist
10. 10. Brücke nach Aspekt 7, 8 oder 9, wobei die Anbindungslaschen jeweils mindestens eine, bevorzugt zwei dritte Durchgangsöffnung(en) zur Aufnahme von Längs- und/oder Quersaiten aufweisen.
11. 11. Brücke nach einem der vorigen Aspekte, wobei der Mittelabschnitt rinnenförmig ausgebildet ist und wobei die Seiten der Rinne jeweils als durchgehende Seitenwand oder als Fachwerkstruktur ausgebildet sind.
12. 12. Brücke nach Aspekt 11, wobei die Rinne gegenüberliegende Ränder aufweist, von denen sich die Stege zu den Randabschnitten erstrecken, und wobei die Rinne an diesen gegenüberliegenden Rändern jeweils mittels einer Stirnwand verschlossen ist.
13. 13. Brücke nach Aspekt 11 oder 12, wobei der Boden der Rinne mindestens zwei, bevorzugt mindestens vier Durchgangsöffnungen zur Aufnahme von Längssaiten aufweist.
14. 14. Brücke nach einem der vorigen Aspekte, wobei mindestens einige, bevorzugt alle Durchgangsöffnungen zur Aufnahme jeweils einer einzelnen Saite ausgebildet sind.
15. 15. Brücke nach einem der vorigen Aspekte, wobei jeweils mindestens eine der zweiten Durchgangsöffnungen in jeweils einem der unteren Stege angeordnet ist.
16. 16. Brücke nach einem der vorigen Aspekte, wobei sich von dem Mittelabschnitt beidseitig jeweils zwei untere Stege zu den beiden Randabschnitten erstrecken.
17. 17. Brücke nach Aspekt 16, wobei die von den zweiten Durchgangsöffnungen aufzunehmenden Längssaiten jeweils zwischen den entsprechenden zwei unteren Stegen hindurch verlaufen.
18. 18. Brücke nach einem der vorigen Aspekte, wobei die Brücke als Metall-Gussteil, bevorzugt als Metall-Spritzgussteil ausgebildet ist.
19. 19. Ballspielschläger mit einem Schlägerrahmen, der einen Griffabschnitt, einen Schlägerkopf und einen dazwischen angeordneten Herzbereich aufweist, wobei der Herzbereich durch zwei sich vom Griffabschnitt erstreckende Rahmenholme und eine Brücke nach einem der vorigen Aspekte gebildet wird.
20. 20. Ballspielschläger nach Aspekt 19, ferner mit einer durch Längs- und Quersaiten gebildeten Bespannung, wobei mindestens eine erste Längssaite durch eine Durchgangsöffnung im Mittelabschnitt der Brücke und jeweils mindestens eine zweite Längssaite durch eine Durchgangsöffnung der beiden unteren Stege der Brücke geführt ist und wobei die beiden zweiten Längssaiten jeweils zwischen den entsprechenden zwei oberen Stegen der Brücke hindurch verlaufen.
21. 21. Ballspielschläger nach Aspekt 19 oder 20, wobei der Schlägerrahmen als Kohlefaser-Hohlprofil ausgebildet und an die Brücke angeformt ist.
22. 22. Ballspielschläger mit einem Schlägerrahmen, der einen Griffabschnitt, einen Schlägerkopf und einen dazwischen angeordneten Herzbereich aufweist, wobei der Herzbereich durch zwei sich vom Griffabschnitt erstreckende Rahmenholme und eine Brücke gebildet wird, wobei die Brücke einen Mittelabschnitt und zwei Randabschnitte aufweist, die mit dem Rahmen des Ballspielschlägers verbunden sind, wobei sich von dem Mittelabschnitt beidseitig jeweils ein unterer Steg und zwei obere Stege zu den beiden Randabschnitten erstrecken, wobei der Mittelabschnitt erste Durchgangsöffnungen zur Aufnahme von Längssaiten aufweist und wobei mindestens zwei weitere zweite Durchgangsöffnungen in den beiden Rahmenholmen zur Aufnahme von Längssaiten derart angeordnet sind, dass die von ihnen aufzunehmenden Längssaiten jeweils zwischen den entsprechenden zwei oberen Stegen hindurch verlaufen.
23. 23. Ballspielschläger nach Aspekt 22, wobei die von den mindestens zwei zweiten Durchgangsöffnungen aufzunehmenden Längssaiten jeweils berührungslos zwischen den entsprechenden zwei oberen Stegen hindurch verlaufen.
24. 24. Ballspielschläger nach Aspekt 22 oder 23, wobei jeweils der untere Steg zwischen dem Mittelabschnitt und dem entsprechenden Randabschnitt mit keinem der beiden oberen Stege verbunden ist.
25. 25. Ballspielschläger nach einem der Aspekte 21-24, wobei jeweils die beiden oberen Stege zwischen dem Mittelabschnitt und dem entsprechenden Randabschnitt nicht miteinander verbunden sind.
26. 26. Ballspielschläger nach einem der Aspekte 21-25, wobei jeweils der Abstand zwischen den beiden oberen Stegen vom Mittelabschnitt zum entsprechenden Randabschnitt hin zunimmt.
27. 27. Ballspielschläger nach einem der Aspekte 21-26, wobei jeweils zwischen den beiden oberen Stegen und dem unteren Steg eine Durchgangsöffnung senkrecht zu einer durch die Bespannung definierte Ebene gebildet wird, deren Querschnittfläche bevorzugt mindestens 1,5 cm², stärker bevorzugt mindestens 2 cm² und besonders bevorzugt mindestens 2,5 cm² beträgt.
28. 28. Ballspielschläger nach einem der vorigen Aspekte, wobei an den beiden Randabschnitten jeweils Anbindungslaschen vorgesehen sind, über die die Brücke mit dem Rahmen des Ballspielschlägers, der bevorzugt mittels Schlauchblasverfahren hergestellt ist, verbunden ist.
29. 29. Ballspielschläger nach Aspekt 28, wobei die Anbindungslaschen jeweils eine konkave Außenfläche aufweisen, die bevorzugt mindestens 10 cm², stärker bevorzugt mindestens 15 cm² und besonders bevorzugt mindestens 20 cm² beträgt.
30. 30. Ballspielschläger nach Aspekt 28 oder 29, wobei jeweils mindestens eine der zweiten Durchgangsöffnungen in jeweils einer der Anbindungslaschen angeordnet ist
31. 31. Ballspielschläger nach Aspekt 28, 29 oder 30, wobei die Anbindungslaschen jeweils mindestens eine, bevorzugt zwei dritte Durchgangsöffnung(en) zur Aufnahme von Längs- und/oder Quersaiten aufweisen.
32. 32. Ballspielschläger nach einem der Aspekte 21-31, wobei der Mittelabschnitt rinnenförmig ausgebildet ist und wobei die Seiten der Rinne jeweils als durchgehende Seitenwand oder als Fachwerkstruktur ausgebildet sind.
33. 33. Ballspielschläger nach Aspekt 32, wobei die Rinne gegenüberliegende Ränder aufweist, von denen sich die Stege zu den Randabschnitten erstrecken, und wobei die Rinne an diesen gegenüberliegenden Rändern jeweils mittels einer Stirnwand verschlossen ist.
34. 34. Ballspielschläger nach Aspekt 32 oder 33, wobei der Boden der Rinne mindestens zwei, bevorzugt mindestens vier Durchgangsöffnungen zur Aufnahme von Längssaiten aufweist.
35. 35. Ballspielschläger nach einem der Aspekte 21-34, wobei mindestens einige, bevorzugt alle Durchgangsöffnungen zur Aufnahme jeweils einer einzelnen Saite ausgebildet sind.
36. 36. Ballspielschläger nach einem der Aspekte 21-35, wobei jeweils mindestens eine der zweiten Durchgangsöffnungen in jeweils einem der unteren Stege angeordnet ist.
37. 37. Ballspielschläger nach einem der Aspekte 21-36, wobei sich von dem Mittelabschnitt beidseitig jeweils zwei untere Stege zu den beiden Randabschnitten erstrecken.
38. 38. Ballspielschläger nach Aspekt 37, wobei die von den zweiten Durchgangsöffnungen aufzunehmenden Längssaiten jeweils zwischen den entsprechenden zwei unteren Stegen hindurch verlaufen.
39. 39. Ballspielschläger nach einem der Aspekte 21-38, wobei die Brücke als Metall-Gussteil, bevorzugt als Metall-Spritzgussteil ausgebildet ist.
40. 40. Ballspielschläger nach einem der Aspekte 21-39, ferner mit einer durch Längs- und Quersaiten gebildeten Bespannung, wobei mindestens eine erste Längssaite durch eine Durchgangsöffnung im Mittelabschnitt der Brücke und jeweils mindestens eine zweite Längssaite durch eine Durchgangsöffnung der beiden unteren Stege der Brücke geführt ist und wobei die beiden zweiten Längssaiten jeweils zwischen den entsprechenden zwei oberen Stegen der Brücke hindurch verlaufen.
41. 41. Ballspielschläger nach einem der Aspekte 21-40, wobei der Schlägerrahmen als Kohlefaser-Hohlprofil ausgebildet und an die Brücke angeformt ist.

In particular, the present invention also relates to the following aspects:

1. A bridge for a ball game racket, wherein the bridge has a central portion and two edge portions which are intended to be connected to the frame of a ball game racket, extending from the middle portion on both sides in each case a lower web and two upper webs to the two edge portions wherein the central portion has first passage openings for receiving longitudinal strings, and wherein at least two further second passage openings for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them extend in each case between the corresponding two upper webs.
2. 2. The bridge according to aspect 1, wherein the longitudinal strings to be received by the at least two second through-holes each extend without contact between the corresponding two upper webs.
3. 3. Bridge according to aspect 1 or 2, wherein in each case the lower web between the central portion and the corresponding edge portion is connected to none of the two upper webs.
4. 4. Bridge according to one of the preceding aspects, wherein in each case the two upper webs between the central portion and the corresponding edge portion are not interconnected.
5. 5. Bridge according to one of the preceding aspects, wherein in each case the distance between the two upper webs from the central portion to the corresponding edge portion increases.
6. 6. Bridge according to one of the preceding aspects, wherein in each case between the two upper webs and the lower web, a passage opening is formed perpendicular to a plane defined by the clothing whose cross-sectional area is preferably at least 1.5 cm ² , more preferably at least 2 cm ² and more preferably at least 2.5 cm ² .
7. 7. Bridge according to one of the preceding aspects, wherein at the two edge portions each connection tabs are provided which are adapted to connect the bridge to a manufactured by means of tubular blowing racket frame.
8. 8. Bridge according to aspect 7, wherein the attachment tabs each have a concave outer surface, which is preferably at least 10 cm ² , more preferably at least 15 cm ² and particularly preferably at least 20 cm ² .
9. 9. Bridge according to aspect 7 or 8, wherein in each case at least one of the second passage openings is arranged in each case one of the connection tabs
10. 10. Bridge according to aspect 7, 8 or 9, wherein the attachment tabs each have at least one, preferably two third passage opening (s) for receiving longitudinal and / or transverse strings.
11. 11. Bridge according to one of the preceding aspects, wherein the central portion is channel-shaped and wherein the sides of the channel are each formed as a continuous side wall or as a truss structure.
12. 12. Bridge according to aspect 11, wherein the channel has opposite edges, of which the webs extend to the edge portions, and wherein the channel is closed at these opposite edges in each case by means of an end wall.
13. 13. Bridge according to aspect 11 or 12, wherein the bottom of the channel has at least two, preferably at least four through holes for receiving longitudinal strings.
14. 14. Bridge according to one of the preceding aspects, wherein at least some, preferably all passage openings for receiving a single string are formed.
15. 15. Bridge according to one of the preceding aspects, wherein in each case at least one of the second passage openings in each case one of the lower webs is arranged.
16. 16. Bridge according to one of the preceding aspects, wherein extending from the central portion on both sides in each case two lower webs to the two edge portions.
17. 17. A bridge according to aspect 16, wherein the longitudinal strings to be received by the second passage openings extend in each case between the corresponding two lower webs.
18. 18. Bridge according to one of the preceding aspects, wherein the bridge is formed as a metal casting, preferably as a metal injection molded part.
19. 19. A ball game racket comprising a racket frame having a handle portion, a club head and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the handle portion and a bridge according to any one of the preceding aspects.
20. 20. Ball game rackets according to aspect 19, further comprising a string formed by longitudinal and transverse strings, wherein at least a first longitudinal string is guided through a through hole in the middle portion of the bridge and at least one second longitudinal string through a through hole of the two lower webs of the bridge and wherein the both second longitudinal strings each extend between the corresponding two upper webs of the bridge.
21. 21. Ball game rackets according to aspect 19 or 20, wherein the racket frame is formed as a carbon fiber hollow profile and formed on the bridge.
22. 22. A ball game racket with a racket frame having a handle portion, a club head and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the handle portion and a bridge, the bridge having a central portion and two edge portions connected to the frame the ball game racket are connected, wherein extending from the central portion on both sides in each case a lower web and two upper webs to the two edge portions, wherein the central portion has first passage openings for receiving longitudinal strings and wherein at least two further second through holes in the two frame spars for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them each extend between the corresponding two upper webs.
23. 23. Ball game rackets according to aspect 22, wherein the longitudinal strings to be received by the at least two second passage openings each extend in a contactless manner between the corresponding two upper bars.
24. 24 ball game racket according to aspect 22 or 23, wherein in each case the lower web between the central portion and the corresponding edge portion is connected to none of the two upper webs.
25. 25. Ball game rackets according to one of the aspects 21-24, wherein in each case the two upper webs between the central portion and the corresponding edge portion are not connected to each other.
26. 26. Ball game rackets according to any one of aspects 21-25, wherein in each case the distance between the two upper webs increases from the central portion to the corresponding edge portion.
27. 27. Ball game racket according to one of the aspects 21-26, wherein in each case between the two upper webs and the lower web, a passage opening is formed perpendicular to a plane defined by the clothing whose cross-sectional area is preferably at least 1.5 cm ² , more preferably at least 2 cm ² and more preferably at least 2.5 cm ² .
28. 28 ball game racket according to one of the preceding aspects, wherein at the two edge portions respectively connecting tabs are provided, via which the bridge with the frame of the ball game racket, which is preferably made by means of tubular blowing process is connected.
29. 29. Ball game racket according to aspect 28, wherein the attachment tabs each have a concave outer surface, which is preferably at least 10 cm ² , more preferably at least 15 cm ² and particularly preferably at least 20 cm ² .
30. 30. Ball game rackets according to aspect 28 or 29, wherein in each case at least one of the second passage openings is arranged in each case one of the connection tabs
31. 31 ball game racket according to aspect 28, 29 or 30, wherein the connection tabs each have at least one, preferably two third passage opening (s) for receiving longitudinal and / or transverse strings.
32. 32. Ball game racket according to one of the aspects 21-31, wherein the central portion is channel-shaped and wherein the sides of the channel are each formed as a continuous side wall or as a truss structure.
33. 33. A ball game racket according to aspect 32, wherein the channel has opposite edges, from which the webs extend to the edge portions, and wherein the channel is closed at these opposite edges in each case by means of an end wall.
34. 34. Ball game rackets according to aspect 32 or 33, wherein the bottom of the channel has at least two, preferably at least four through holes for receiving longitudinal strings.
35. 35. Ball game racket according to one of the aspects 21-34, wherein at least some, preferably all passage openings for receiving a single string are formed.
36. 36. Ball game rackets according to one of aspects 21-35, wherein in each case at least one of the second passage openings is arranged in each case one of the lower webs.
37. 37. Ball game racket according to one of the aspects 21-36, wherein extending from the central portion on both sides in each case two lower webs to the two edge portions.
38. 38. A ball game racket according to aspect 37, wherein the longitudinal strings to be received by the second passage openings each extend between the respective two lower lands.
39. 39. Ball game racket according to one of aspects 21-38, wherein the bridge is formed as a metal casting, preferably as a metal injection molded part.
40. 40. Ball game racket according to one of aspects 21-39, further comprising a string formed by longitudinal and transverse strings, wherein at least a first longitudinal string passed through a through hole in the central portion of the bridge and at least one second longitudinal string through a through hole of the two lower lands of the bridge is and where the two second longitudinal strings each extending between the corresponding two upper webs of the bridge.
41. 41. Ball game rackets according to any one of aspects 21-40, wherein the racket frame is formed as a carbon fiber hollow profile and formed on the bridge.

• Fig. 1 eine schematische frontale Ansicht eines erfindungsgemäßen Rahmens gemäß einer bevorzugten Ausführungsform;
• Fig. 2A eine schematische perspektivische Ansicht einer erfindungsgemäßen Brücke gemäß einer bevorzugten Ausführungsform;
• Fig. 2B eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 2A durch die Linie A-B gemäß Fig. 1;
• Fig. 2C eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 2A durch die Linie C-D gemäß Fig. 1;
• Fig. 3A eine schematische perspektivische Ansicht einer erfindungsgemäßen Brücke gemäß einer weiteren bevorzugten Ausführungsform;
• Fig. 3B eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 3A durch die Linie A-B gemäß Fig. 1;
• Fig. 3C eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 3A durch die Linie C-D gemäß Fig. 1;
• Fig. 4 eine schematische perspektivische Ansicht eines erfindungsgemäßen Rahmens gemäß einer weiteren bevorzugten Ausführungsform von frontal schräg oben;
• Fig. 5A-5D je eine schematische frontale Ansicht einer erfmdungsgemäßen Brücke gemäß weiteren bevorzugten Ausführungsformen;
• Fig. 6A eine schematische perspektivische Teilansicht einer erfindungsgemäßen Brücke gemäß einer weiteren bevorzugten Ausführungsform;
• Fig. 6B eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 6A durch die Linie A-B gemäß Fig. 1;
• Fig. 6C eine schematische Ansicht eines Querschnitts der Brücke aus Fig. 6A durch die Linie C-D gemäß Fig. 1;
• Fig. 6D eine schematische frontale Ansicht eine Abschnitts eines erfindungsgemäßen Rahmens gemäß einer weiteren bevorzugten Ausführungsform mit der Brücke aus Fig. 6A; und
• Fig. 6E einen vergrößerten Ausschnitt der Fig. 6D.

Hereinafter, preferred embodiments of the bridge according to the invention or the frame according to the invention are described in detail with reference to FIGS. Show it:

• Fig. 1 a schematic frontal view of a frame according to the invention according to a preferred embodiment;
• Fig. 2A a schematic perspective view of a bridge according to the invention according to a preferred embodiment;
• Fig. 2B a schematic view of a cross section of the bridge Fig. 2A according to the line AB Fig. 1 ;
• Fig. 2C a schematic view of a cross section of the bridge Fig. 2A through the line CD according to Fig. 1 ;
• Fig. 3A a schematic perspective view of a bridge according to the invention according to a further preferred embodiment;
• Fig. 3B a schematic view of a cross section of the bridge Fig. 3A according to the line AB Fig. 1 ;
• Fig. 3C a schematic view of a cross section of the bridge Fig. 3A through the line CD according to Fig. 1 ;
• Fig. 4 a schematic perspective view of a frame according to the invention according to another preferred embodiment of frontally obliquely above;
• Figs. 5A-5D in each case a schematic frontal view of a bridge according to the invention according to further preferred embodiments;
• Fig. 6A a schematic perspective partial view of a bridge according to the invention according to a further preferred embodiment;
• Fig. 6B a schematic view of a cross section of the bridge Fig. 6A according to the line AB Fig. 1 ;
• Fig. 6C a schematic view of a cross section of the bridge Fig. 6A through the line CD according to Fig. 1 ;
• Fig. 6D a schematic frontal view of a portion of a frame according to the invention according to a further preferred embodiment with the bridge Fig. 6A ; and
• Fig. 6E an enlarged section of the Fig. 6D ,

Fig. 1 shows a schematic frontal view of a frame 2 for a ball game racket according to the present invention. The frame 2 has a head portion or club head 4 for receiving a clothing, not shown, on a handle portion 10, whose central axis coincides with the longitudinal axis 14 of the frame 2. Between the club head 4 and the handle portion 10, a heart region 3 is arranged, which is formed by two extending from the handle portion 10 frame beams 5a, 5b and a bridge 6. Of course, dimensions and shape of the frame 2 are merely exemplary. The in Fig. 1 The illustrated schematic frame 2 can have any bridges according to the invention, for example the preferred embodiments described below for bridges according to the invention.

A preferred embodiment of a bridge 6 is in a perspective view in FIG Fig. 2A shown. The bridge is for any ball game racket, such as the ball game racket according to Fig. 1 suitable. The bridge has a central portion 18 and two edge portions 16a, 16b which are intended to be connected to the frame of a ball game racket. In the illustrated preferred embodiment the Fig. 2A the two edge portion are formed by two connecting straps 16a, 16b, which serve to connect the bridge 6 with the frame beams 5a, 5b and / or a part of the head portion 4. The attachment tabs 16a, 16b define the illustrated bridge 6 at both ends of its guide curve and preferably have concave outer surfaces which can engage correspondingly shaped convex portions of the frame and / or can be positively connected.

A lower web 24a, 24b and two upper webs 22a, 22b extend on both sides from the middle section 18 of the bridge 6 to the two edge sections or connecting links 16a, 16b. The middle section 18 has (in this case four) first passage openings 28 for receiving longitudinal strings, wherein at least two further second through openings (not shown) for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them each between the corresponding two upper webs 22a, 22b pass through. Preferably, at least some of these second passage openings are respectively provided in the lower webs 24a, 24b. Alternatively or additionally, at least some of these second passage openings may be provided in connection lugs 16a, 16b, respectively (see also the discussion of FIGS FIGS. 6D and 6E ).

Fig. 2B represents a cross section of the bridge Fig. 2A according to the line AB Fig. 1 represents. Fig. 2B thus represents a cross section through the central portion 18 of the bridge Fig. 2A (at a portion without passage or string opening 28). As in Fig. 2B can be seen, the bridge in the illustrated preferred embodiment, a central portion 18 with exclusively convex cross-section, which is designed here by way of example substantially rectangular on. Alternatively, the cross section may also have rounded corners, be round, elliptical or polygonal or have any other cross-sectional shape. Fig. 2C represents a cross section of the bridge Fig. 2A through the line CD according to Fig. 1 represents. Fig. 2C thus represents a cross section through the web portion of the bridge Fig. 2A as in Fig. 2C it can be seen, the webs 22 and 24 of the bridge in the illustrated preferred embodiment also each have a convex cross-sectional profile, also designed as an example substantially rectangular on. Alternatively, the cross section may also have rounded corners, be round, elliptical or polygonal or have any other cross-sectional shape.

As can be seen from the different cross-sectional shapes in the FIGS. 2B and 2C results, which are to be understood merely by way of example, concerns an idea of the invention to provide a stable middle section 18 for receiving the longitudinal strings and this by means of relatively filigree webs 22 and 24 (optionally via connecting straps 16a and 16b) to the remaining racket frame to tie. This bridge structure allows it to look like FIG. 1 schematically, the bridge with the aid of the upper webs 22a and 22b to attach relatively high above the club head 4, without thereby the length of the longitudinal strings would be disadvantageously shortened, since the longitudinal strings between the opposite upper webs 22a and 22b extend therethrough. Furthermore, the web structure reduces the total weight of the bridge in an advantageous manner. This advantage can also with other cross-sectional profiles than those according to FIGS. 2B and 2C be achieved. Thus, while it is preferred that the cross-sectional area of the lower land 24 is greater than the cross-sectional area of an upper land 22, as shown schematically in FIG Figure 2C is shown, however, the lower web 24 in a direction perpendicular to the clothing plane does not have to extend as far as the two upper webs 22 (as also shown in FIG Figure 2C is shown). The two upper webs 22 each have a distance w1 or w2 from the lower web 24 and a distance h from each other. These distances are preferably in each case at least 5 mm, more preferably at least 10 mm and particularly preferably at least 15 mm, wherein the distance along the guideline of the webs can vary and preferably each increases from the central portion 18 in the direction of the edge portions 16a and 16b.

Fig. 3A shows a further preferred embodiment of a bridge 6 for a frame 2 according to the invention, in which also the central portion 18 is formed channel-shaped. Fig. 3B represents a cross section of the bridge Fig. 3A according to the line AB Fig. 1 Accordingly, the bridge points out Fig. 3A a groove-shaped recess 26 in the central portion 18, which has a side toward the string bed side, but is completed on both sides by means of end walls 26b. Together with the two side walls 26a of the channel-shaped middle section 18, these end walls 26b form a cup-shaped structure. The bottom of the channel preferably has at least two passage or string openings (not shown).

With regard to in Fig. 3C illustrated cross-sectional profile of the bridge Fig. 3A through the line CD according to Fig. 1 the above statements apply to Fig. 2C analogous.

The extent D of the middle section in the longitudinal direction of the racket frame (see. Fig. 3b ) is at least in sections preferably at least 10 mm, more preferably at least 12 mm. The gutter depth d is preferably at least 8 mm, more preferably at least 10 mm. Of course, the groove-shaped recess 26 need not be formed with a square cross section, as in Fig. 3B is indicated, but may also be formed, for example, rectangular or U-shaped.

FIG. 4 shows a schematic perspective view of a frame according to the invention with the bridge according to Fig. 3 , The frame comprises a handle portion 10 and head portion 4 with bridge 6 in a view from the front obliquely above. The middle section 18 is located centrally in the bridge 6. Each two upper webs 22a and 22b grown from the central portion 18 and extend to the nearest connection tab, which can not be seen here, since the connection tabs in the finished racket frame preferably in the carbon fiber composite material of the club head are incorporated. The central portion 18 has a groove-shaped recess 26 which is open to the string bed 8. The facing in the direction of the sides a and b end faces and pointing in the direction of handle portion 10 bottom of the channel are closed, so that the central portion 18 may be referred to as cup-shaped. The bottom of the cup-shaped channel 26 has four as previously specified string openings 28 for performing corresponding longitudinal strings of the fabric. Instead of four string openings 28, more (eg six or eight) or fewer (eg two or three) string openings may also be provided in the bottom of the cup-shaped channel 26.

In the FIGS. 5A-D By way of example, four further embodiments of the bridge 6 are shown schematically in frontal view. The embodiments correspond in their basic structure (ie, for example, with regard to the arrangement of the upper and lower webs 22, 24) to the embodiments of Fig. 2 or 3 However, in addition to those already associated with the Figures 2 and 3 features described a truss structure 30 in the central portion 18. The truss structure 30 is formed by the mutually conditional forms of the struts 32 and the spaces 34 and depends inter alia on the number thereof.

The number of spaces or through holes 34 in the FIGS. 5A and 5B is five each. In alternative embodiments, the number of spaces 34 may take other values. For example, the embodiment of the FIG. 5C each three spaces 34, while the embodiment of the Fig. 5D has nine spaces 34. However, the number of spaces 34 is preferably at least 2.

The spaces in between can generally take many forms. For example, the spaces 34 may be oval, triangular, quadrangular, convex, or concave polygonal and / or of irregular shape, with corners may be pointed or rounded.

In the Fig. 5A illustrated preferred embodiment of a bridge 6 according to the invention has in the front view five round spaces 34. In the Fig. 5B illustrated alternative preferred embodiment of a bridge 6 according to the invention has in the front view of five largely triangular spaces 34 which point with a tip alternately direction club head 4 and handle portion 10. The gap triangles may have rounded corners and may be oblique, isosceles, and / or equilateral. In the illustrated embodiment, the middle and the two outer interspaced triangles have the tips of the head section 4 and the remaining two triangles the direction of the handle section 10. In alternative embodiments, the directions in which the apices of the triangles face are just reversed. Alternatively, the triangles may also point in other directions.

A truss structure according to the invention may have similarly shaped gaps 34 and / or similarly shaped struts 32 and additionally or alternatively have non-similarly shaped gaps 34 and / or non-similarly shaped struts. The areas of the gap shapes may remain the same within one embodiment as shown in FIGS FIGS. 5A and 5B is shown, or vary between the space shapes, as shown in the Fig. 5D is shown.

The different in the FIGS. 5A to 5D shown truss structures are to be understood as exemplary only and are intended to illustrate that the bridge weight can be minimized by means of a truss structure according to the invention in different ways, without affecting the mechanical stability of the bridge. In the case of a one-piece bridge, such complex and delicate structures can preferably be made from one Produce magnesium alloy. The use of magnesium provides the necessary stability and lightweight construction, whereas the one-piece design ensures, among other things, that the structures shown can be produced with the corresponding precision, without fractures occurring at joints. Preferably, the illustrated structures can be produced in a casting, particularly preferably injection molding process, so that the finished bridge consists of a single cast or injection-molded part.

FIG. 6A schematically shows a perspective section of another preferred embodiment of a bridge 6 according to the invention. A part of the frame portion, with which the bridge is connected via the connection tab 16 is indicated by dashed lines. The illustrated bridge section of the bridge 6 of Fig. 6A has a connection tab 16 and a part of the middle section 18. The middle section 18 is cut off graphically beyond the longitudinal axis 14. In this embodiment, the bridge 6 four struts per side a and b, two upper struts 22 and two lower struts 24th Fig. 6B represents a cross section of the bridge Fig. 6A according to the line AB Fig. 1 represents. Fig. 6B thus represents a cross section through the central portion 18 of the bridge Fig. 6A represents. Fig. 6C represents a cross section of the bridge 6 Fig. 6A through the line CD according to Fig. 1 represents. Fig. 6C thus represents a cross section through the web portion of the bridge 6 Fig. 6A represents.

The embodiment of Fig. 6A is in the Fig. 6D shown in a frontal view, so that the string guide of the fabric is easily visible. In the embodiment of the FIGS. 6A-E none of the webs has a string opening 28. Instead, the longitudinal strings 36 and 37 each run without contact between the two upper webs 22 of the corresponding side a and b and between the two lower webs 24 of the corresponding side a and b, respectively. The longitudinal strings 36 and 37 engage in a respective string opening 28 in the connection tab 16 of the corresponding side a and b, respectively. This is especially clear Fig. 6E can be seen, an enlargement of the frame area to the side of the bridge 6 a Fig. 6D shows. In the Figures 6D and 6E the boundary curves between the connection tabs 16 and the adjoining, for example, carbon-containing frame section are schematically marked by dashed lines. Alternatively or additionally, a string 36 and / or 37 can also engage in the frame outside of the attachment tabs and outside the bridge.

In the Figures 6D and 6E an advantage of the web structure according to the invention is apparent: although the upper webs 22a, 22b attach relatively high above the club head 4 by means of the connection tabs 16a and 16b, thus ensuring a good flow of force from the bridge into the club head, the length of the longitudinal strings 36 and 37 is not adversely affected by the profile of the webs 22a and 22b, as the strings 36 and 37 pass between the upper webs 22a and 22b and are guided through corresponding string holes 28 in the connecting tabs 16a and 16b and the rest of the racket frame. This also applies to the embodiments according to the FIGS. 1 to 4 to, in each case only a lower web 24a is provided and, for example, the string 37a (see. FIG. 6E ) is guided through a string opening in this single lower web 24a.

The in the Figures 1A-6E listed embodiments are exemplary and in no way conclusive. All figures are to be seen as a schematic representation, based on which specific preferred features are to be explained. Therefore, in illustrations of embodiments, features may have been omitted for clarity. For example, in the FIGS. 2A-C . 3A-C . 4 and 6A-D completely or partially dispensed with the representation of string openings 28. This means that features from different representations can be combined, unless this has been explicitly excluded.

Claims (17)

A bridge for a ball game racket, wherein the bridge has a central portion and two edge portions which are intended to be connected to the frame of a ball game racket, extending from the central portion on both sides in each case a lower web and two upper webs to the two edge portions the middle section has first passage openings for receiving longitudinal strings, and wherein at least two further second passage openings for receiving longitudinal strings are arranged such that the longitudinal strings to be received by them extend in each case between the corresponding two upper bridges. A bridge according to claim 1, wherein the longitudinal strings to be received by the at least two second through-holes each extend without contact between the corresponding two upper webs. Bridge according to claim 1 or 2, wherein in each case the lower web between the central portion and the corresponding edge portion is connected to neither of the two upper webs. Bridge according to one of the preceding claims, wherein in each case the two upper webs between the central portion and the corresponding edge portion are not interconnected. Bridge according to one of the preceding claims, wherein in each case the distance between the two upper webs increases from the central portion to the corresponding edge portion. Bridge according to one of the preceding claims, wherein in each case between the two upper webs and the lower web a passage opening perpendicular to a is formed by the covering defined plane whose cross-sectional area is preferably at least 1.5 cm ² , more preferably at least 2 cm ² and more preferably at least 2.5 cm ² . Bridge according to one of the preceding claims, wherein at the two edge portions each connection tabs are provided which are adapted to connect the bridge to a manufactured by means of tubular blowing racket frame. Bridge according to claim 7, wherein the attachment tabs each have a concave outer surface, which is preferably at least 10 cm ² , more preferably at least 15 cm ² and particularly preferably at least 20 cm ² . Bridge according to claim 7 or 8, wherein in each case at least one of the second passage openings is arranged in each case one of the connection tabs Bridge according to claim 7, 8 or 9, wherein the attachment tabs each have at least one, preferably two third passage opening (s) for receiving longitudinal and / or transverse strings. Bridge according to one of the preceding claims, wherein the central portion is channel-shaped and wherein the sides of the channel are each formed as a continuous side wall or as a truss structure. Bridge according to claim 11, wherein the channel has opposite edges, from which the webs extend to the edge portions, and wherein the channel is closed at these opposite edges in each case by means of an end wall. Bridge according to claim 11 or 12, wherein the bottom of the channel has at least two, preferably at least four through holes for receiving longitudinal strings. Bridge according to one of the preceding claims, wherein in each case at least one of the second passage openings is arranged in each case one of the lower webs. Bridge according to one of the preceding claims, wherein extending from the central portion on both sides in each case two lower webs to the two edge portions, wherein preferably to be absorbed by the second through-holes longitudinal strings each extending between the respective two lower webs. A ball game racket comprising a racket frame having a handle portion, a club head and a heart portion disposed therebetween, the heart portion being formed by two frame spars extending from the handle portion and a bridge according to any one of the preceding claims. A ball game racket comprising a racket frame having a handle portion, a club head and a heart portion therebetween, the heart portion being formed by two frame spars extending from the handle portion and a bridge, the bridge having a central portion and two edge portions which engage the frame of the ball game racket are connected, wherein on both sides in each case a lower web and two upper webs extend to the two edge portions, wherein the central portion has first passage openings for receiving longitudinal strings and wherein at least two further second through holes arranged in the two frame beams for receiving longitudinal strings such are that the longitudinal strings to be picked up by them each extend between the corresponding two upper webs.

Images