EP0038342A1

EP0038342A1 - Mast heel for windsurfing board

Info

Publication number: EP0038342A1
Application number: EP80902057A
Authority: EP
Inventors: Hannes Marker; Hans Wehrli
Original assignee: Individual
Current assignee: Individual
Priority date: 1979-10-26
Filing date: 1981-05-04
Publication date: 1981-10-28
Also published as: JPS56501448A; WO1981001125A1

Abstract

Un pied de mat pour planche a voile consiste en un appui (1) fixe sur la planche a voile et en un embranchement relie a l'appui de maniere articulee; on obtient ainsi une mobilite dans tous les sens entre les deux parties. Ces parties sont munies, d'une part d'une demi-coque ou d'une coque (8) annulaire, et d'autre part d'une sphere tenant lieu de coussinet ou d'un anneau (4) en forme de boudin (5), ces elements etant en prise l'un avec l'autre. L'appui (1) et l'embranchement (6) sont tenus ensemble par un tirant (12), ce qui, d'une part, facilite la separation de la liaison articulee par l'allongement elastique du tirant (12) et d'autre part, rend possible, apres separation, d'assembler a nouveau les elements de la liaison articulee. Dans le but de faciliter le deplacement du mat sur la planche a voile, l'appui (1) est relie a un curseur deplacable longitudinalement sur la planche ou l'appui est fait d'une piece avec ce curseur.A mast for windsurfing consists of a support (1) fixed on the windsurfing board and a branch connected to the support in an articulated manner; mobility is thus obtained in all directions between the two parties. These parts are provided, on the one hand with an annular half-shell or shell (8), and on the other hand with a sphere serving as a cushion or a ring (4) in the form of a rod (5), these elements being engaged with each other. The support (1) and the branch (6) are held together by a tie (12), which, on the one hand, facilitates the separation of the articulated connection by the elastic extension of the tie (12) and d on the other hand, makes it possible, after separation, to reassemble the elements of the articulated connection. In order to facilitate the movement of the mast on the windsurfing board, the support (1) is connected to a cursor which can be moved longitudinally on the board where the support is made in one piece with this cursor.

Description

Mast base for sailing boards

The invention relates to a mast base for sailing boards, consisting of a holding part which can be fastened to the sailing board and a connecting part which is connected to the latter by a universal joint and which can be connected to the mast.

If the mast is released by the surfer and falls on the water in an approximately parallel position to the sail board, the mast foot should be able to easily detach from the sail board, so that injuries to the surfer by pinching limbs between the mast and sail board are avoided. The detachability of the mast foot from the sail board often also leads to an undesired separation of the two parts, so that the surfer has to put the two together again before he can use the device again.

The object of the invention is therefore to provide a joint for a mast foot which on the one hand enables the mast to be easily detached from the sail board, but on the other hand avoids manipulations for reconnecting the mast foot after such loosening with the sail board.

According to the invention this object is achieved in that the holding part and the connecting part are provided with curved surfaces which roll on each other in their all-round movement and which engage in a form-fitting manner, and that the holding part and the connecting part are held together by an elastic tension element. In the normal position of use, the elastic pulling element holds the holding part and the connecting part together, so that a universal joint is formed by their curved surfaces that roll against each other. However, if forces act on the mast that tend to release the articulated connection, the elastic tension element enables the articulated connection to be separated, so that injuries to the user are avoided. For renewed use, the elastic pulling element pulls the mast back in and automatically joins the articulated connection, so that special manipulations for reconnecting the mast base to the sail board are not necessary.

A particularly simple reassembly of the joint parts is achieved in that the holding part is provided with a ring provided with a bead-shaped edge and the connecting part with a complementary ring groove. After a separation, the elastic tension element holding the two parts together pulls the connection part, which is drawn with its annular groove onto the vuist-shaped edge and thereby automatically restores the articulated connection.

Depending on the respective wind or wave conditions, it is desirable that the surfer can adjust the mast in the longitudinal direction of the sailing board without having to put it down. In another embodiment of the invention it is therefore provided that the holding part is attached to a slide or as Sled is formed, which is guided in a longitudinally displaceable manner on a guide running along the central axis of the sailing board. A simple adjustment option for the surfer results from the fact that the slide is connected in an articulated manner to a pedal which is connected via a lever device to a spring-loaded locking piece engaging in the recesses in the guide in such a way that when the pedal is depressed it is disengaged from the respective locking recess becomes.

According to a further embodiment of the invention it is provided that the longitudinally displaceable and lockable slide on the sail board is combined with the elastic pulling element holding the universal joint together.

A further embodiment of the invention relates to the special design of the pedal of the slide and of the locking element interacting with it.

The slide is expediently guided on its guide with a resiliently balanced play, so that sand falling into the guide cannot impair the good displaceability of the slide.

Embodiments of the invention are explained below with reference to the drawing.

In this shows

FIG. 1 shows a longitudinal section through a first embodiment of a mast foot that is longitudinally displaceable on a carriage,

2 shows the mast foot according to FIG. 1 in an angled position. development of the connecting part,

3 shows the mast base according to FIG. 1 and FIG. 2 with the connecting part removed,

FIG. 4 shows a longitudinal section through a second embodiment of a mast foot that is longitudinally displaceable on a carriage,

FIG. 5 shows a longitudinal section through a third embodiment of a mast foot that is longitudinally displaceable on a carriage,

FIG. 6 shows a plan view of another embodiment of a slide with a guide for receiving the holding part of the mast base,

7 shows a longitudinal section through the slide guide according to FIG. 6 and

8 shows a representation corresponding to FIG. 7 in the momentary state of the unlatching.

In the embodiment according to FIGS. 1 to 3, the holding part 1 is designed as a slide which is guided in a longitudinally displaceable manner on a T-shaped guide piece 2. The guide piece 2 is provided with a base plate 3, which can be attached to the sail board.

The holding part 1 has a collar-shaped ring 4, which is provided with a bead-shaped edge 5. The connecting part 6 has in its lower region a flange-shaped collar 7 which has a corresponding annular groove 8 on its side facing the bead-shaped edge 5, the shape of which corresponds to the shape of the shaped edge 5 is adapted. The connecting part 6 has a central extension 9 which tapers conically and with which the connecting part 6 engages in the ring 4 to below the bead-shaped edge 5.

The holding part 1 and the connecting part 6 are provided with central bores 10, 11, in which a rubber band 12 connecting both parts runs. The rubber band 12 has a lower thickened head 13, with which it is fixed in a widened space of the holding part 1 behind the edge of the bore 10. Instead of the thickened head 13, retaining washers or other fastening means for the rubber band can also be provided.

At the opposite end, the rubber band 12 has a retaining pin 14 passing through it, the. Ends are supported on an annular shoulder 15 which is formed behind the bore 11. The ends of the pin 14 can slide on the annular shoulder 15, so that the connecting part 6 can be rotated relative to the holding part 1 without any twisting of the rubber band 12.

The mast 16 is attached to the connecting part by plugging it on or in some other way.

The bead-shaped edge 5 and the annular groove 8 form an articulated connection in that the holding part 1 and the connecting part 6 are held together under the elastic tension of the rubber band 12 such that the connecting part 6 is in its annular groove 8 on the bead-shaped edge 5 of the holding part 1 supports. This support is ensured in the manner shown in FIG. 2 even when the connecting part 6 is pivoted relative to the holding part 1. If a stronger pull is exerted on the connecting part 6, the rubber band 12 is stretched in the manner shown in FIG. 3, so that the connecting part 6 can separate from the holding part 1. The rubber band 12 strives to restore the articulated connection by pulling the connecting part 6 against the holding part 1. The ring groove 8 automatically couples to the bead-shaped edge 5.

The embodiment according to FIGS. 4 and 5 is described below.

In FIGS. 4 and 5, the middle part of a sailing board is shown cut open in the area of the mast connection and designated 101. The upper side 102 of the sail board has a recess 103 which runs in the central longitudinal axis of the sail board and receives a box 104 which carries the device according to the invention for connecting the sail mast to the sail board. The box is removably mounted in the recess, for which purpose it carries a pawl 105 which is under the influence of a spring 106 and normally engages behind a catch 107. A loop 108 attached to the pawl serves to release the latching.

With reference to the embodiment according to FIG. 4, two guide grooves 110, 111, each congruently opposite one another, are provided in the longitudinal side walls 109 of the box 104. The ends of two pins 112 are guided in the guide grooves 110 and are rotatably mounted in the cheeks 113 of a carriage 114. The cheeks 113 form the legs of a U, the web 115 of which is designed as a bearing for a support member of the mast. In the present case, the bearing forms the joint socket 116 of the universal mast joint designed as a ball joint. The joint socket receives the joint ball 117, on which a connecting pin 118 for the sail mast, not shown, is formed. The joint socket 116 also has an enlarged annular bead 119.

A latching pin 120 is mounted parallel to the pins 112 in vertical longitudinal slots (not shown) of the cheeks 113 of the slide 114. Normally, with each end it engages in a locking trough 121 of a row of locking troughs formed by the guide groove 111 and thus secures the slide 114 against longitudinal displacement. The latching is secured in the present case by a spring 122 designed as a rubber rope. The spring wraps around a deflection roller 123 provided on the pins 112 and 120 and extends through both parts 116, 117 of the universal mast joint into the mast, where it is more suitable is not anchored with both ends. By adjusting the anchor point, the bias of the spring can be varied in a known manner. A slide 133 for guiding the spring is also movably mounted in the web 115 of the slide 114 in a plane parallel to the upper side 102 of the sailing board.

The two pins 112 also serve as axle pins for a lever 124 and 125, respectively. The levers are designed as angle levers and are formed from a U-shaped part, the web of which forms a step notch 126 and 127, respectively. With their legs 128 and 129, which extend beyond the pin 112 and form the second lever arm, the levers engage under the deflecting roller 123 on the locking pin 120. Rest position kept.

To move the carriage 114 in the longitudinal direction of the Sailing boards 101 is one of the two levers 124, 125 by depressing its footrest, as shown in FIG. 4 for the lever 124, in order to pivot the corresponding pin 112, as a result of which the deflecting roller 123 and thus also the locking pin 120 are raised by the second lever arm 128 and so that the locking pin is disengaged from the locking recess 121. In this state, the carriage can be moved forward or backward. After releasing the step lock, the slide is automatically locked again under the influence of the spring 122 when the locking pin 120 is opposite a locking recess 121. When the deflection roller 123 goes down on the locking pin 120, the lever is simultaneously pivoted back into its normal position.

If the sail surfer lets go of the sail mast, since he is unbalanced, he lays down, the ball 117 rotating in the socket 116. The spring 122 is tensioned here. The annular bead 119, which is elastic, prevents damage to the joint socket by the falling mast, and prevents injury to the sail surfer, for example by pinching a foot. Furthermore, the ring bead allows the sail mast to be erected more easily, especially when the spring is weak.

Figure 5 shows a slightly modified version compared to Figure 4. The same reference numerals are used for the same parts. The box received here by the recess 103 in the sailing board 101 is designated 134. A guide groove 136 is provided in each longitudinal side wall 135 of the box. The guide grooves of both longitudinal side walls are again congruently opposite one another. Two pins 137 carry rollers 138 at their ends, which engage in pairs in a guide groove 136. As in the previous embodiment, the pins are supported in cheeks 139 of a slide 14θ. Parts 115 to 119 and 133 correspond to the previous version,

A locking pin 120 is in turn mounted parallel to the pin 137 in vertical longitudinal slots (not shown) of the cheeks 139. Also in this embodiment, the locking pin engages with each end in a locking recess 121 of a row of recesses formed in this case by the guide groove 136. The locking is also secured by a spring 141 designed as a rubber rope, which wraps around a deflection roller 123 mounted on the locking pin 120 and extends through both parts 116, 117 of the universal mast joint into the mast.

The two pins 137 in turn form axle pins for a lever 142 or 143. As in the previous embodiment. each lever is formed from a U-shaped part, the web 144 and 145 of which forms the step notch. The legs of this lever are guided over the deflection roller 123 on the locking pin 120, so that the levers are held in their rest position by the spring 141 via the deflection roller 123. As in the previous embodiment, the detent pin 120 is released by pressing down one of the two levers 142, 143. When the detent pin is released, the carriage 140 can be moved forwards or backwards. A renewed locking of the locking pin 120 in a locking recess 121 takes place after releasing the depressed lever when the locking pin is opposite a locking recess under the influence of the spring 141.

The embodiment according to FIGS. 6 to 8 is described below. The device shown in these figures is used to connect a mast to a sail board, which can be of any construction and are therefore not shown. The same applies to the universal mast joint. For the embodiment shown, a round pin on the universal latching joint is necessary, via which this is to be connected to the device according to the invention. A vertical bearing bore 201 is provided for this purpose.

This bearing bore 201 is located in a bearing 202 which is designed as a slide which is displaceable in a guide 203 provided on the upper side of the sailing board. A U-shaped rail serves as a guide, the legs 204, 205 of which are angled inwards. The guide is, for example, screwed onto the top of the sail board, for which purpose screw holes (not shown) are present. With their bends, the legs 204, 205 overlap a slide plate 206 which, together with a molded part 207, forms the carriage 202 '. The bearing bore 201 is located in the molded part 207. Furthermore, the molded part carries a spring wire clip 208 which, in a manner to be described below, secures both the locking of the support member (not shown) of the universal mast joint in the bearing bore and the locking of the carriage 202 'in the guide 203.

With a central part, the spring wire clip 208 forms a pivot axis 209 which is mounted horizontally in the molded part 207 transversely to the direction of displacement of the carriage 202 '. The end part 210 and the end part 211 of the spring wire bow 208 are angled several times with respect to the pivot axis 209, so that the end part 210 is in the same horizontal plane as the pivot axis and parallel to it lies, while the end part 211 is angled vertically downwards and forms a locking lug. This locking lug serves to interact with a respective locking recess 212 of a series of locking recesses which are provided in the web of the guide 203.

The pivot axis 209 and the end part 210 parallel to it form diametrically opposite secants of the circumference of the bearing bore 201 (see in particular FIG. 6). In this way, two notches are formed, which hold the support member of the universal mast joint in the bearing bore 201 in a force-fitting manner. For latching, the support member has, in a manner known per se, an annular groove near its free end, into which the parts 209 and 210 of the spring wire clip 208 are inserted. Spreading the two parts apart, the support member can be inserted into the bearing bore and pulled out of it. In order to enable the spreading apart, the two parts are mounted in the molded part 207 with a sufficiently large amount of play.

From the swivel axis 209, the spring wire clip 208 initially runs obliquely upwards towards the end part 210 and extends outside the molded part 207 (see in particular the dash-dot lines in FIGS. 7 and 8). This part forms the one lever arm of a two-armed lever, the other arm of which is the part of the spring wire clip 208 lying beyond the pivot axis 209. The free end of this part is equipped with a pedal 213. Depressing the pedal takes place against the resistance of this arch of the spring wire clip 208 as a result of the elastic deformation occurring, since yes. End part 210 is mounted at a distance from the pivot axis 209 in the molded part 207. Depressing the pedal 213 causes the locking lug 211 to be raised, so that it does not Engagement with the locking recess 212 comes. In this state, the carriage 202 'in the guide 203 can be moved according to the respective requirements.

In the event of danger, the supporting member can move out of the bearing bore 201 while overcoming a structurally predetermined force, i.e. the rig detach from the sail board. To arbitrarily pull out the support member from the bearing bore, the pedal 213 is to be raised so that the parts 209 and 210 spread and thus emerge from the annular groove of the support member. In order to facilitate the insertion of the support member into its position of use, the pedal can also be raised.

Claims

1. mast foot for sailing boards, consisting of a mountable on the sail board holding part and a connected to this by a universal joint connecting part that is connectable to the mast, characterized in that the holding part and the connecting part with their all-round movement rolling, arching Surfaces are provided which interlock positively, and that the holding part and the connection part are held together by an elastic tension element.

2. Mast base according to claim 1, characterized in that the holding part on the one hand and the connecting part on the other hand are provided with a half-shell and a bearing ball supported in this.

3. mast base according to claim 1, characterized in that the holding part on the one hand and the connecting part on the other hand are provided with a bead-shaped ring and a complementary annular groove.

4. mast base according to claim 3, characterized in that the ring is provided with a bead-shaped edge on the holding part.

5. mast foot according to one of claims 1 to 4, characterized in that the elastic tension element in the stretched state the holding part and the connecting part runs along their common central axis.

6. Mast base according to one of claims 1 to 5, characterized in that the elastic tension element consists of a rubber band which is held at least in the holding part or connecting part by a rotary connection.

7. mast foot for sailing boards, consisting of a mountable on a sail board holding part and a connected to this by a universal joint to the connecting part, which can be connected to the mast, characterized in that the holding part is attached to a sled or is designed as a sled on a guide running along the central axis of the sail board is guided so as to be longitudinally displaceable.

8. mast base according to one of claims 1 to 7, characterized in that the carriage is articulated with a pedal which is connected via a lever device with a spring-loaded locking piece engaging in the recesses of the guide that this at

Depressing the pedal is disengaged from the respective locking groove.

9. mast foot according to claim 7, characterized in that the carriage is articulated to a pedal which is connected via a lever device with the brake shoes acting on the guide in such a way that when it is depressed it releases the spring-loaded brake shoes.

10. mast foot for sailing boards, consisting of a mountable on the sail board holding part and a connecting part connected to it by a universal joint, which can be connected to the mast, characterized in that the holding part is connected to a carriage which is in a vertical longitudinal slot of the sailing board is displaceable and locked in position that a spring secures the locking, that the holding part is part of the universal joint designed as a ball joint and the connecting part the other part and that the spring or an inelastic rope loaded by it extends from the locking through both parts of the joint extends into the mast.

11. mast foot according to claim 10, characterized in that a rubber rope serves as a spring.

12. mast foot according to claim 10, characterized in that the spring is completely housed in the mast and that the rope loaded by the spring extends out of the mast.

13. Mast foot according to one of claims 10 to 12, characterized in that a horizontal locking pin is mounted in the carriage transversely to the longitudinal slot of the sailing board and is limited vertically displaceable and that the rope loops around the locking pin hairpin-shaped on the unlatching side.

14. mast foot according to claim 13, characterized in that two guide pins are provided for the slide parallel to the locking pin, each of which carries a lever which both rests on the locking pin on the locking side and also extends out of the slot of the sail board and forms a pedal with its free end.

15. Mast base according to one of claims 1O to 14, characterized in that the connecting part forms the joint ball and the holding part the joint socket and that the joint socket ne has an enlarged annular bead.

16. Mast base according to claim 7, characterized in that the carriage with a bearing for receiving the

Holding part is provided and carries a spring wire bracket, which both the locking of the holding part in the camp and the locking of the carriage in the

Leadership ensures.

17. Mast base according to claim 16, characterized in that the spring wire bracket forms a pivot axis with a central part, which is horizontally mounted in the slide transversely to the direction of displacement, that the two end parts of the spring wire bracket are angled several times with respect to the pivot axis, so that the one end part in the same horizontal plane as the pivot axis and parallel to it in the slide and the other end part is angled vertically downwards and forms a locking lug which engages in a locking recess of a longitudinal row of locking recesses in the base of the guide that the pivot axis and the parallel end part form diametrically opposite secants of the circumference of a vertical bearing bore in the slide and that the spring wire bracket from the pivot axis to the pa rallel end part initially runs obliquely upwards and extends to outside the slide.

18. Mast foot according to claim 17, characterized in that the outside of the carriage between the

Pivot axis and the part of the spring wire bracket lying parallel to its end part carries a pedal.

19. Mast foot according to one of claims 16 to 18, characterized in that the guide is a U-shaped rail with inwardly angled legs.

20. Mast base according to claim 19, characterized in that the longitudinal row of the locking recesses is provided in the middle of the U-web.

21. The device according to one of claims 7 to 20, characterized in that the carriage is mounted with play on its guide and that the game is compensated for by spring elements that the slide is pressed with its sliding edges against sliding opposite edges of the guide.