DE10254311B3 - Hydraulic fluid compensating vessel for hydraulic brake system or clutch has locking element which in locked position secures cap element on fluid reservoir through positive locking at least in one rotational direction - Google Patents

Abstract

The hydraulic fluid compensating vessel has a reservoir (10) for hydraulic fluid, a cap element (40) for the closing and the opening of the reservoir, and a locking element (30) constructed in such a way that in a locked position it secures the cap element on the reservoir through positive locking at least in one rotational direction. The locking element in the locked position allows a rotation between the reservoir and cap element in a direction opposite to the rotational direction in which the locking element secures the cap on the reservoir. An independent claim is included for a use of a hydraulic fluid compensating vessel which is in a hydraulic brake system or hydraulic clutch system.

Description

The invention relates to a hydraulic fluid expansion tank according to the preamble of claim 1. In particular, the invention relates to a hydraulic fluid expansion tank for hydraulic Brake systems or clutch systems, especially of motorcycles.

Such a known hydraulic fluid expansion tank is shown schematically in 11 shown.

In these known hydraulic fluid expansion tanks, the are currently used in braking systems of motorcycles the closure element on the receptacle screwed. The securing element is a bracket that is screwed on of the closure element is attached laterally to the receptacle with a screw. The known Securing element includes an extension of the closure element reaches around the top. In this way, the securing element prevents that this closure element from the receptacle can be screwed because it cannot move upwards.

The well-known hydraulic fluid expansion tank has the disadvantage that the Securing element when filling or refill to open of the receptacle unscrewed and lost. Another disadvantage is that you can not only on the closure element, i.e. the cover, but also take care of the removed securing element got to. It is also very cumbersome the closure element on the receptacle to install. First of all closure element be screwed on and screwed on. Then the bracket may have to be searched and be attached. Finally must the Screw for fastening the bracket be tightened with a tool.

There is also the disadvantage that this Outside attached securing element is optically disturbing and one not negligible Represents a risk of injury.

Another disadvantage of the known hydraulic fluid expansion tank is in that the Sliding disc on which the closure element is screwed slides, is not secured against rotation. Therefore, the static friction between the bellows and the guide washer greater than the static friction between the disc and the closure element can be set to adversely twist the bellows avoid.

In addition, the known hydraulic fluid expansion tank has the Disadvantage that the Overall size by the outside Parts of the securing element and the screw is larger than the actual container. This creates restrictions for the Design of the other components of the motorcycle.

The invention is therefore the object based on specifying a hydraulic fluid expansion tank, in which the closure element can be easily attached and secured.

The object of the invention is achieved with a hydraulic fluid expansion tank according to the features solved by claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

According to the invention, the hydraulic fluid expansion tank includes one Receptacle for hydraulic fluid, a closure element to lock and opening of the receptacle a rotary movement and a securing element for securing the closure element on the receptacle, wherein the securing element is designed such that it in a locking position, the closure element on the receptacle via a Form fit at least secures in a rotational direction.

This construction makes the hydraulic fluid expansion tank easy and can be assembled with just a few parts. A visually pleasing structure let yourself reach because the locking element because of the rotation lock over a Form fit preferably either in the closure element or the receptacle can be integrated. This considerably simplifies the user friendliness.

The invention also has the advantage that this Fuse element can be designed such that it either on the receptacle or the closure element can be arranged captively. The closure element can simply on the receptacle be attached. In this case, the securing element can advantageously arrange automatically in the safety position so that none further steps as required in the prior art.

If, according to one embodiment, the closure element is screwed onto the receptacle, for example, it is sufficient if the securing element secures the closure element on the receptacle in one direction, ie in the unscrewing direction. In the other direction it can allow rotation so that the closure element can be screwed on without the securing element hindering this movement. For this purpose, the securing element can preferably be designed such that, in the securing position, rotation between the receptacle and the closure element permits rotation in a direction opposite to the direction in which the securing element the closure element ment on the receptacle via a positive lock secures.

If the closure element according to one embodiment, for example with a bayonet catch the receptacle is secured, the securing element can be designed such that it in a locking position, the closure element on the receptacle via a Positive locking in secures in both directions of rotation.

According to an execution of the Invention, the securing element can be designed such that it in a release position releases the fuse. That has the advantage, that this The securing element does not have to be removed, but in the release position on the receptacle or the closure element can remain if the closure element from the receptacle is separated.

According to an execution of the Invention, the securing element has an actuating section with which the securing element from the securing position into the release position is movable. The actuating section is preferably arranged in such a way that he actuated in one direction of movement must be, preferably perpendicular to the direction of movement lies with which the closure element from the receptacle is solved. In this way, unintentional opening is safely avoided.

According to an execution of the Invention, the securing element can be designed such that the direction of movement the securing element from the securing position into the release position lies in a plane defined by the vector of a force is that to solve of the closure element from the receptacle suitable is. As the two directions of movement required to open are essentially perpendicular to each other, an unintentional opening is certain avoided.

According to an execution of the Invention, the securing element can be designed such that the direction of movement the securing element from the securing position into the release position lies in a plane defined by the vector of a torque is that to solve of the closure element from the receptacle suitable is. The direction of movement should preferably be vertical to the direction of rotation to achieve the advantages mentioned above.

According to an execution of the Invention, the securing element can be part of a bayonet catch. The construction of a bayonet lock is known to the person skilled in the art and it is in his ability the hydraulic fluid expansion tank accordingly train.

According to an execution of the Invention can the securing element and / or the closure element be designed such that the Protection element against the closure element is rotatable in one direction and in the opposite direction is non-rotatable. This is particularly in connection with a screw connection advantageous. The closure element can be easier Movement to be screwed on while unscrewing requires releasing the safety element, unintentional opening safe to avoid. The result is a particularly low number of parts and easy construction.

According to an execution of the Invention can the closure element a mounting section and the receptacle a mounting section have that can be connected to each other. The attachment section of the closure element an internal thread and the mounting portion of the receptacle Have external thread. Alternatively, the fastening section of the closure element can also be used an external thread and the fastening section of the receptacle has an internal thread. The securing element is preferably on the one with the internal thread Part over in both directions a positive locking secured. On which the external thread having part, it is then preferred in the securing position only in one direction a positive locking secured to prevent unintentional turning off of the closure element to prevent.

According to an execution of the Invention can the receptacle two preferably opposite Have recesses for receiving the securing element. In these The securing element can have recesses in a rotationally fixed manner via a positive connection be included.

According to an execution of the Invention can the closure element have at least one recess for receiving the securing element.

According to an execution of the Invention, the securing element can comprise an engagement section, on one side an inclined, arc-shaped and / or ramp-like in the direction of rotation Has a page boundary. This makes it possible for the securing element to pass through the one exercised when screwing on Torque brought from the locked position to the release position to enable easy screwing on. According to one execution the opposite side of the engaging portion can have a surface which is essentially perpendicular to the direction of rotation, to bring about a positive fit, which hinders unscrewing the closure element.

According to one embodiment of the invention, the closure element can have a plurality of cutouts for receiving the securing element, which are preferably distributed uniformly over the circumference. This embodiment is particularly advantageous in the case of a closure element with an internal thread, because the closure element can be secured in a corresponding plurality of rotational positions, so that a connection which is as firm as possible can be achieved. Alternatively, the variety of recesses conditions can also be provided in the receptacle, in particular if an internal thread is formed on the receptacle and an external thread on the closure element.

According to an execution of the Invention can the recesses are each an inclined, arc-shaped and / or in one direction of rotation have ramp-like side boundary. As explained above, in this way an easy attachment of the closure element to reach. Preferably can the opposite Sides of the recesses substantially perpendicular to the direction of rotation trending areas have to as explained an opening through a positive fit to avoid.

The invention also relates to a braking system or Coupling system, preferably for a motorcycle with such a hydraulic fluid expansion tank.

The invention is illustrated below of the embodiment shown in the figures.

1 shows a perspective view of an embodiment of the invention.

2 shows a sectional view through the middle of the embodiment of 1 ,

3 shows a perspective view of the receptacle of the embodiment of FIG 1 ,

4 shows a sectional view through the center of the receptacle of 3 ,

5 shows a perspective view of the sealing element of the embodiment of FIG 1 ,

6 shows a sectional view through the center of the sealing element of FIG 5 ,

7 shows a perspective view of the securing element of the embodiment of FIG 1 ,

8th - shows a sectional view through the center of the fuse element of 7 ,

9 shows a perspective view of the closure element of the embodiment of FIG 1 ,

10 shows a sectional view through the center of the closure element of 9 ,

11 shows a prior art.

In the description of the embodiment the following reference numerals are used:

10

receptacle

11

wall

12

attachment section (Male thread)

13

recess

14

Connection

20

sealing element (Bellows)

21

side portion

22

collar section

23

recess

30

fuse element (Disc with legs)

31

disk portion

32

leg

33

engaging

34

actuating section (for approval)

40

closure element (Cover)

41

end wall

42

Side wall

43

attachment section (Inner thread)

44

recess

The 1 to 10 show an embodiment of the invention.

1 shows a hydraulic fluid expansion tank according to the invention, in which the closure element 40 is screwed onto the receptacle. The securing element 30 protrudes with its operating section 34 (please refer 7 and 8th ) under the edge of the closure element. Overall, the hydraulic fluid expansion tank according to the invention has a size that essentially corresponds to the size of the receptacle.

2 shows a cross section of the hydraulic fluid expansion tank of FIG 1 with the receptacle 10 , the sealing element 20 , the securing element 30 and the closure element 40 ,

3 shows a perspective view of the receptacle 10 , The lower section comprises a substantially cylindrical wall 11 that in a mounting section 12 with an external thread. There are two recesses in the area of the fastening section 13 or rails or grooves for non-rotatably receiving the securing element 30 (Please refer 7 and 8th ) intended. The securing element 30 can with legs 32 in the recesses 13 eingriefen. Due to the protruding edges is the securing element 30 captive in the receptacle 10 added. 4 shows a cross section of the receptacle 10 , In addition to the elements already described, it has a connection 14 for a hydraulic line, not shown.

The 5 and 6 show the sealing element 20 in one perspective or in cross section. The sealing element 20 made of rubber has a side portion 21 on, the outer shape of the inner shape of the receptacle 10 equivalent. Due to the corresponding non-round shapes there is a rotation lock of the sealing element 20 opposite the receptacle 10 , The sealing element has at its upper edge 20 a collar section 22 with which the sealing element 20 when assembled on the upper edge of the receptacle 10 rests. In the collar section 22 are the recesses 13 corresponding cutouts 23 provided for the securing element 30 with his legs 32 through the recesses 23 in the recesses 13 can be introduced.

The 7 and 8th show the securing element 30 in one perspective or in cross section. The securing element 30 has a disc section 31 with a sliding washer and two legs 32 on the edge of the disc section perpendicular to the disc plane at a distance of about 180 Degrees are arranged. The legs 32 each have an engagement section 33 and an operating section 34 on. The intervention section 33 is tapered on one side or tapered. On the other hand, it has an essentially rectangular transition. The respective end of the legs facing away from the pane section comprises an actuating section 34 , How special 8th it becomes clear that the legs are pretensioned in such a way that the legs bend outwards. In the assembled state, the engaging portions 33 of the two legs are therefore against the internal thread of the closure element 40 pressed. With the legs 32 becomes the securing element 30 in the recesses 13 of the receptacle 10 held against this twist.

The 9 and 10 show the closure element 40 in one perspective or in cross section. The closure element 40 includes an end wall 41 and a side wall 42 , On the inside of the side wall 42 is an internal thread 43 intended. The threads are through recesses 44 interrupted at regular intervals. The distances between the recesses 44 and the width of the recesses 44 are chosen so that a secure guidance in the thread is still guaranteed, and the legs of the securing element 30 in the recesses 44 can snap into place. The threads have on one side of the recess 44 a bevel. On the other side of the recess, they have a sharp transition.

The closure element 40 can on the receptacle 10 be screwed on easily because the bevelled sides of the threads on the bevels of the securing element 30 to meet. This will make the legs 32 of the securing element 30 pressed inwards, making rotation in this direction easily possible. As soon as the closure element is screwed tight, the end plate comes 41 in. Stop with the disc section 31 , preventing further rotation.

In the opposite direction, the vertical surfaces of the threads and the legs meet 32 on each other as soon as the legs 32 due to the preload in recesses 44 reach. One turn to unscrew the closure element 40 can only be done if the actuators 34 is actively pressed inwards against the preload when turning. This design has the advantage that the anti-rotation lock is reset immediately, even if the actuator is touched accidentally 34 a rotation should have taken place. There are still two opposite legs 32 on the securing element 30 are provided, this accidental unwanted touch must occur simultaneously on two opposite sides, which is extremely unlikely.

According to an alternative embodiment, too no bevels be provided on the legs of the securing element. In this Case must at Unscrew the closure element the rotation lock is active by exerting a force on the actuating sections of the securing element are canceled.

Claims (18)

Hydraulic fluid expansion tank with a receptacle ( 10 ) for hydraulic fluid, a closure element ( 40 ) for closing and opening the receptacle ( 10 ) by a rotary movement and a securing element ( 30 ) to secure the locking element ( 40 ) on the receptacle ( 10 ), characterized in that the securing element ( 30 ) is designed such that the locking element ( 40 ) on the receptacle ( 10 ) non-rotatably secures at least in one direction of rotation. Hydraulic fluid expansion tank according to claim 1, characterized in that the securing element ( 30 ) is designed in such a way that in the securing position a rotation between the receptacle ( 10 ) and the closure element ( 40 ) in a direction of rotation that is opposite to the direction of rotation in which the securing element ( 30 ) the closure element ( 40 ) on the receptacle ( 10 ) non-rotatably secured via a positive connection. Hydraulic fluid expansion tank according to claim 1, characterized in that. the securing element ( 30 ) is designed such that the locking element ( 40 ) on the receptacle ( 10 ) non-rotatably secures in both directions of rotation. Hydraulic fluid expansion tank after one of the preceding claims, characterized in that the securing element ( 30 ) is designed such that it releases the fuse in a release position. Hydraulic fluid expansion tank according to claim 4, characterized in that the securing element ( 30 ) an operating section ( 34 ) with which the securing element ( 30 ) can be moved from the securing position into the release position. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the securing element ( 30 ) Is part of a bayonet catch. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the securing element ( 30 ) or the closure element ( 40 ) is designed such that the securing element ( 30 ) opposite the closure element ( 40 ) is rotatable in one direction, and is rotationally fixed in the opposite direction. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the securing element ( 30 ) and the closure element ( 40 ) are designed such that the securing element ( 30 ) opposite the closure element ( 40 ) is rotatable in one direction, and is rotationally fixed in the opposite direction. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the closure element ( 40 ) a mounting section ( 43 ) with an internal thread and the receptacle ( 10 ) a mounting section ( 12 ) with an external thread. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the closure element ( 40 ) a mounting section ( 43 ) with an external thread and the receptacle ( 10 ) a mounting section ( 12 ) with an internal thread. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the receiving tank ( 10 ) two preferably opposite recesses ( 13 ) to accommodate the securing element ( 30 ) having. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the closure element ( 40 ) at least one recess ( 44 ) to accommodate the securing element ( 30 ) having. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the securing element ( 30 ) an engaging section ( 33 ) which has on one side an oblique, arc-shaped or ramp-like side boundary in the direction of rotation. Hydraulic fluid expansion tank according to claim 13, characterized in that the opposite side of the engagement section ( 33 ) has a surface running essentially perpendicular to the direction of rotation. Hydraulic fluid expansion tank according to one of the preceding claims, characterized in that the closure element ( 40 ) a variety of recesses ( 44 ) to accommodate the securing element ( 30 ), which are preferably distributed evenly over the circumference. Hydraulic fluid expansion tank according to claim 15, characterized in that the recesses ( 44 ) each have an oblique, arc-shaped or ramp-like side boundary in one direction of rotation. Hydraulic fluid expansion tank according to claim 16, characterized in that the respectively opposite sides of the recesses ( 44 ) have surfaces running essentially perpendicular to the direction of rotation. Use of a hydraulic fluid expansion tank after any of the preceding claims in a hydraulic brake system or in a hydraulic clutch system.