DE102015115489A1 - Spring brake cylinder with double sealed bayonet lock - Google Patents

Abstract

The invention relates to a pneumatic spring brake cylinder (3) for braking systems of vehicles, with a movable in the axial direction, by a storage spring (9) actuated spring brake piston (7), which on one side of a pressure chamber (11) and on the opposite side of a spring chamber (15) accommodating the accumulator spring (9) is delimited, the accumulator spring (9) being supported, on the one hand, by the spring accumulator brake piston (7) and, on the other hand, by a bottom of the spring accumulator brake cylinder (3), a support and connecting wall (5) having an opening (19) through which a Federspeicherbremskolbenstange (17) connected to the spring brake piston (7) extends in the axial direction, a bayonet connection (27) between one in the pressure chamber (11) arranged end portion (29) of the spring brake cylinder (3) and a first flange part (31) of the support and connection wall (5), wherein the bayonet connection (27) at a first Ring surface (33) of the first flange (31) of the support and connection wall (5) has first locking elements and on a second annular surface (35) of the end portion (29) of the spring brake cylinder (3) second locking elements, wherein at least partially overlapping the first annular surface (33) and the second annular surface (35) engage positively behind the first and second locking elements, and with a seal arrangement (37) in the region of the bayonet connection (27) which between the pressure chamber (11) and the atmosphere surrounding the spring brake cylinder (3) (43) acts sealing. The invention provides that the sealing arrangement (37) comprises at least one first elastic ring seal (39) and at least one second elastic ring seal (41), the at least one seen in a direction from the atmosphere (43) into the pressure chamber (11) first elastic ring seal (39) of the bayonet joint (27) upstream and the at least one second elastic ring seal (41) of the bayonet joint (27) is arranged downstream, and wherein the at least one first ring seal (39) and the at least one second ring seal (41) respectively between the first flange (31) of the support and connecting wall (5) and the end portion (29) of the spring brake cylinder (3) are radially clamped.

Description

State of the art

The invention relates to a pneumatic spring brake cylinder for brake systems of vehicles, with a movable in the axial direction, actuated by a storage spring brake piston, which is bounded on one side by a pressure chamber and on the opposite side of a spring receiving the spring pressure chamber, wherein the memory spring supported on the one hand on the spring brake piston and on the other hand at the bottom of the spring brake cylinder, a support and connecting wall having an opening through which a Federspeicherbremskolben connected to the spring brake piston rod extends in the axial direction, a bayonet connection between an arranged in the pressure chamber end portion of the spring brake cylinder and a first flange the supporting and connecting wall, wherein the bayonet connection to a first annular surface of the first flange portion of the supporting and connecting wall first locking elements un d at a second annular surface of the end portion of the spring brake cylinder second locking elements, wherein at least partially overlapping the first annular surface and the second annular surface engage behind the first and second locking elements form fit, and with a seal assembly in the bayonet connection, which between the pressure chamber and the Spring storage cylinder surrounding atmosphere acts sealing, according to the preamble of claim 1 and of a method for its preparation according to claims 8 and 9.

In such spring brake cylinders, there is the problem that the pressurizable and ventable pressure chamber is to be sealed from the atmosphere, but between the atmosphere and the pressure chamber, the bayonet connection is arranged. The arranged in the bayonet joint seal assembly should therefore prevent flow between the pressure chamber and the atmosphere. In particular, should be prevented by the seal assembly penetration of dust and dirt into the pressure chamber, since such dirt could then get into the compressed air system of the brake system.

A generic spring brake cylinder is for example off DE 41 35 943 A1 known, wherein the bayonet connection between an end portion of the spring brake cylinder and a first flange of the supporting and connecting wall is formed. As a sealing arrangement acts a single sealing ring, which is viewed from the atmosphere in the pressure chamber downstream of the bayonet connection.

Object of the invention

The object of the invention is in contrast to further develop a spring brake cylinder of the type mentioned in such a way that it ensures an improved sealing of the pressure chamber.

This object is solved by the features of claim 1. The independent claims 8 and 9 each indicate a method for producing such a spring brake cylinder.

Disclosure of the invention

It is proposed that the sealing arrangement comprises at least a first elastic ring seal and at least one second elastic ring seal, the at least one first elastic ring seal upstream of the bayonet connection and the at least one second elastic ring seal downstream of the bayonet connection in one direction from the atmosphere into the pressure chamber is, and wherein the at least one first annular seal and the at least one second annular seal are clamped radially between each of the first flange portion of the support and connecting wall and the end portion of the spring brake cylinder.

In other words, the bayonet connection is interposed between the at least one first elastic ring seal and the at least one second elastic ring seal with respect to an imaginary connection between the atmosphere and the pressure chamber.

Characterized in that the at least one first annular seal and the at least one second annular seal are clamped radially between the first flange of the support and connecting wall and the end portion of the spring brake cylinder, a high sealing effect. The extent of the clamping of the ring seals determined by those skilled in consideration of elasticity and geometry of the existing example of an elastomer ring seals.

Characterized in that the bayonet connection in a direction from the atmosphere into the pressure chamber is arranged upstream of the at least one first elastic ring seal, the bayonet joint is protected from penetration of moisture, dirt and dust, whereby there is a lower tendency to corrosion. Then the bayonet connection for maintenance and repair purposes can be solved easily. Overall serves Therefore, the at least one first elastic ring seal primarily for keeping away moisture, dirt and dust from the locking elements of the bayonet connection or from the pressure chamber.

Characterized in that seen in a direction from the atmosphere into the pressure chamber upstream of the at least one first elastic ring seal of the bayonet connection and the at least one second elastic ring seal of the bayonet connection is downstream, arises a kind of labyrinth seal with multiple flow deflection. Should therefore come from the pressure chamber compressed air contrary to expect the at least one second ring seal, the compressed air flow is repeatedly deflected by the locking elements of the bayonet connection and the at least one first elastic ring seal, where it is "dead", so that at the end no or only extremely little compressed air could escape from the pressure chamber.

Starting from the two annular surfaces of the bayonet connection, the at least one first elastic ring seal of the atmosphere and the at least one second elastic ring seal particularly preferably face the pressure chamber.

• a) Positionieren der wenigstens einen ersten elastischen Ringdichtung und der wenigstens einen zweiten elastischen Ringdichtung an einer radial äußeren Umfangsfläche des ersten Flanschteils der Trag- und Anschlusswand derart, dass die erste Ringfläche mit den ersten Verriegelungselementen der wenigstens einen ersten elastischen Ringdichtung und der wenigstens einen zweiten elastischen Ringdichtung zwischengeordnet ist,
• b) translatorisches Einführen des Flanschteils der Trag- und Anschlusswand in den Endabschnitt des Federspeicherbremszylinders unter axialem Eingriff der ersten und zweiten Verriegelungselemente und unter radialem Klemmen der wenigstens einen ersten elastischen Ringdichtung und der wenigstens einen zweiten elastischen Ringdichtung zwischen dem ersten Flanschteil der Trag- und Anschlusswand und dem Endabschnitt des Federspeicherbremszylinders,
• c) Verdrehen von Federspeicherspeicherbremszylinder und Trag- und Anschlusswand gegeneinander, derart, dass sich die ersten und zweiten Verriegelungselemente formschlüssig hintergreifen.

In particular, the end portion of the spring brake cylinder can engage over the first flange part of the support and connection wall (radially). The method for producing such a spring brake cylinder then includes at least the following steps:

• a) positioning the at least one first elastic ring seal and the at least one second elastic ring seal on a radially outer peripheral surface of the first flange of the support and connecting wall such that the first annular surface with the first locking elements of the at least one first elastic ring seal and the at least one second elastic ring seal is interposed,
• b) translationally inserting the flange portion of the support and connecting wall into the end portion of the spring brake cylinder under axial engagement of the first and second locking members and radially clamping the at least one first elastic ring seal and the at least one second resilient ring seal between the first flange portion of the support and connecting wall and the end portion of the spring brake cylinder,
• c) rotation of the spring accumulator brake cylinder and supporting and connecting wall against each other, such that the first and second locking elements engage behind a positive fit.

• a) Positionieren der wenigstens einen ersten elastischen Ringdichtung und der wenigstens einen zweiten elastischen Ringdichtung an einer nach radial außen weisenden Umfangsfläche des Endabschnitts des Federspeicherbremszylinders derart, dass die zweite Ringfläche mit den zweiten Verriegelungselementen der wenigstens einen ersten elastischen Ringdichtung und der wenigstens einen zweiten elastischen Ringdichtung zwischengeordnet ist,
• b) translatorisches Einführen des Endabschnitts des Federspeicherbremszylinders in den Flanschteil der Trag- und Anschlusswand unter axialem Eingriff der ersten und zweiten Verriegelungselemente und unter radialem Klemmen der ersten elastischen Ringdichtung und der zweiten elastischen Ringdichtung zwischen dem ersten Flanschteil der Trag- und Anschlusswand und dem Endabschnitt des Federspeicherbremszylinders,
• c) Verdrehen von Federspeicherspeicherbremszylinder und Trag- und Anschlusswand gegeneinander, derart, dass sich die ersten und zweiten Verriegelungselemente formschlüssig hintergreifen.

Alternatively, the first flange part of the support and connection wall can engage over the end section of the spring brake cylinder (radially). The method for producing such a spring brake cylinder then includes at least the following steps:

• a) positioning the at least one first elastic ring seal and the at least one second elastic ring seal on a radially outwardly facing peripheral surface of the end portion of the spring brake cylinder such that the second annular surface with the second locking elements of the at least one first elastic ring seal and the at least one second elastic ring seal is interposed,
• b) translationally inserting the end portion of the spring brake cylinder into the flange portion of the support and connection walls under axial engagement of the first and second locking elements and radially clamping the first elastic ring seal and the second elastic ring seal between the first flange portion of the support and connection wall and the end portion of spring brake cylinder,
• c) rotation of the spring accumulator brake cylinder and supporting and connecting wall against each other, such that the first and second locking elements engage behind a positive fit.

In the context of the relative rotation according to steps c), the first and second annular seals can then each slide along the through the contacted surfaces on the first flange of the support and connection wall or at the end portion of the spring brake cylinder.

Particularly preferably, the at least one first elastic ring seal and the at least one second elastic ring seal each have a circular cross-section, whereby they are easy to manufacture and low.

Particularly preferably, the at least one first elastic ring seal and the at least one second elastic ring seal are each received in a groove of a radially outer peripheral surface of the first flange of the support and connection wall and / or the end portion of the spring brake cylinder. By clinging the elastic ring seals on each groove bottom the tightness is increased. Furthermore, the ring seals are fixed in position, which is advantageous in the translational and rotational movements during assembly of the bayonet connection.

Particularly preferably, the spring brake cylinder forms together with a Service brake cylinder a combined service brake and spring brake cylinder, with one or a arranged in the service brake cylinder, actuated by a pressure medium (s) service brake piston or service brake diaphragm which is operatively connected to a projecting from the service brake cylinder, acting on brake actuation service brake piston rod, which through the opening the support and connection wall ersteckende Federspeicherbremskolbenstange with the service brake piston or with the service brake diaphragm acts together and an end portion of the service brake cylinder is connected to a second, facing away from the spring brake cylinder flange portion of the support and connection wall. The connection between the second flange portion of the support and connecting wall and the end portion of the service brake cylinder is preferably formed by a strap or by a bead.

drawings

The invention will be illustrated by way of example with reference to the drawing. In the drawing shows

1 a cross-sectional view of a portion of a combined service brake and spring brake cylinder according to a preferred embodiment;

2 an enlarged section 1 in the range of a bayonet connection between the spring brake cylinder and a support and connection wall.

Description of the embodiment

In 1 The drawing is for exemplary explanation of the invention, a combined service brake and spring brake cylinder, hereinafter combination cylinder 1 called, shown. The combination cylinder 1 consists of a service brake cylinder, not produced here, and of a spring-loaded brake cylinder structurally and functionally connected to it 3 , The service brake cylinder and the spring brake cylinder 3 are through a supporting and connecting wall 5 separated from each other, these also the coats of the service brake cylinder and the spring brake cylinder 3 wearing. In the event that the spring brake cylinder 5 is carried out separately and without service brake cylinder forms the support and connection wall 5 an outer wall or a bottom or end of the spring brake cylinder 3 ,

By means of the spring brake cylinder 3 For example, a spring-loaded brake is actuated in the context of a peumatic or electro-pneumatic parking or parking brake and by means of the service brake cylinder a peumatic or electro-pneumatic service brake. In this respect, these brake cylinders form part of the said brakes.

Inside the spring brake cylinder 3 is a spring brake piston 7 arranged axially displaceable, wherein on one side of the spring brake piston 7 a memory spring 9 is applied. The memory spring 9 rests on its opposite side at the bottom of the spring brake cylinder 3 from. In accordance with 1 to the left with respect to the spring brake piston 7 existing pressure chamber 11 opens an inlet 13 through which compressed air is introduced to the spring brake piston 7 under tension of the storage spring 9 in 1 to shift to the right to release the spring brake. In this shift of the spring brake piston 7 is the air, which is inside a the storage spring 9 receiving spring chamber 15 exists, for. B. via a (not shown) check valve pushed out. If, however, for the purpose of braking the pressure in the pressure chamber 11 of the spring brake cylinder 3 upon actuation of a known per se, to the inlet 13 the pressure chamber 11 Relieves the connected valve, then can the memory spring 9 the spring brake piston 7 as shown in 1 to shift left to harness the spring brake.

The spring brake piston 7 is with a spring brake piston rod 17 connected by a central opening 19 the support and connection wall 5 through into the region of a pressure chamber 21 extends the service brake cylinder. One in the opening 19 the support and connection wall 5 used seal 23 seals the pressure chambers 11 and 21 during the axial movements of the spring brake piston rod 17 from. The wall of the spring brake cylinder 3 is preferably made of steel or aluminum.

In the pressure chamber 21 the service brake cylinder opens an inlet 25 , via which compressed air is introduced and / or discharged for actuating the service brake cylinder. The compressed air acts, for example, on a diaphragm plate of a diaphragm used inside the service brake cylinder and not shown here. The diaphragm plate is connected to a push rod, also not shown here, with a brake actuation mechanism outside of the combination cylinder 1 interacts. This may be, for example, the operating parts of a disc brake of a motor vehicle.

For detachable connection of the spring brake cylinder 3 with the support and connection wall 5 is a bayonet connection 27 intended. The bayonet connection 27 more precisely, there is one in the area of the pressure chamber 11 arranged end portion 29 of the spring brake cylinder 3 and a first flange part 31 the support and connection wall 5 , Preferably, the end portion overlaps 29 of the spring brake cylinder 3 the first flange part 31 the support and connection wall 5 , in particular axially and radially engages over this. Alternatively, could also be the first flange 31 the support and connection wall 5 the end section 29 of the spring brake cylinder 3 axially overlap and overlap radially.

The bayonet connection 27 points to a first ring surface 33 of the first flange part 31 the support and connection wall 5 first locking elements not visible here and on a second annular surface 35 of the end section 29 of the spring brake cylinder 7 also not visible here second locking elements, wherein at least partially overlapping the first annular surface 33 and the second ring surface 35 the first and second locking elements engage behind a positive fit to form the bayonet connection.

As in DE 10 2011 115 122 A1 can be on the first and second ring surface 33 . 35 each radially outwardly projecting locking segments and be formed radially inwardly formed Ausnehmungssegmente, with locking segments and recess segments each alternate over the circumference without gaps and each may have the same segment arc length. Alternatively, any type of locking element or combinations of locking elements is conceivable, by which a bayonet lock or a bayonet connection 27 as a result of translation and subsequent rotation.

The service brake cylinder, not shown here, for example, by a clamping band or a flare connection with a second flange 55 the support and connection wall 5 connected.

For sealing the pressure chamber 11 opposite the atmosphere 43 is a seal arrangement 37 in the area of the bayonet connection 27 intended. The seal arrangement 37 includes a first elastic ring seal 39 and a second elastic ring seal 41 , being in one direction from the atmosphere 43 in the pressure chamber 11 seen the first elastic ring seal 39 the bayonet connection 27 upstream and the second elastic ring seal 41 the bayonet connection 27 is subordinate. The pre or post order with respect to the bayonet connection 27 Here, for example, refers to the axial direction, which through a central axis 45 of the spring brake cylinder 3 or here also by the direction of movement of the spring brake piston 7 is defined.

As in particular from 2 shows are the first ring seal 39 and the second ring seal 41 each between a radially outer peripheral surface 47 of the first flange part 31 the support and connection wall 5 and a radially inner peripheral surface 49 of the end section 29 of the spring brake cylinder 3 clamped radially.

Particularly preferably, the first elastic ring seal 39 and the second elastic ring seal 41 each have a circular cross section. Furthermore, the first elastic ring seal 39 and the second elastic ring seal 41 each in a groove 51 respectively. 53 for example, the radially outer peripheral surface 47 of the first flange part 31 the support and connection wall 5 recorded, namely in a first groove 51 and in a second groove 53 , Alternatively, the grooves could 51 . 53 also on the radially inner peripheral surface 49 of the end section 29 of the spring brake cylinder 3 be formed, or at least one groove 51 or 53 on the radially outer peripheral surface 47 of the first flange part 31 the support and connection wall 5 and at least one more groove 51 or 53 on the radially inner peripheral surface 49 of the end section 29 of the spring brake cylinder 3 , It is based on 2 clear that the circular cross-section of the first elastic ring seal 39 and the second elastic ring seal 41 no longer corresponds to a pure circular shape in the clamped state, but has flat sections with surface contact.

The first ring surface 33 with the first locking elements of the bayonet connection 27 is then on the radially outer peripheral surface 47 of the first flange part 31 the support and connection wall 7 and the second ring surface 35 with the second locking elements of the bayonet connection 27 on the radially inner peripheral surface 49 of the end section 29 of the spring brake cylinder 3 arranged. At least the end section 29 of the spring brake cylinder 3 is cylindrical, as is the first flange 31 the support and connection wall 7 ,

The first elastic ring seal 39 is preferably designed so that it can penetrate dirt, dust and moisture into the bayonet connection 27 or in the pressure chamber 11 prevents while the second elastic ring seal 41 is preferably designed such that it seals the pressure chamber against the atmosphere pressure-tight. These properties can be achieved, for example, by a targeted selection of geometry and elasticity of the ring seals 39 . 41 be achieved.

Against this background, the spring brake cylinder 3 with the support and connection wall 5 connected as follows or the bayonet connection 27 prepared as follows.

First, the first elastic ring seal 39 in the first groove 51 and the second elastic ring seal 41 in the second groove 53 in the first flange part 31 mounted, for example by elastic expansion and subsequent contraction. Here is the first ring surface 33 with the first locking elements of the bayonet connection 27 the first elastic ring seal 39 and the second elastic ring seal 41 interposed.

Then, the first flange part 31 the support and connection wall 5 in the end section 29 of the spring brake cylinder 3 under axial engagement of the first and second locking elements and with radial clamping of the first elastic ring seal 39 and the second elastic ring seal 41 between the radially outer peripheral surface 47 of the first flange part 31 the support and connection wall 5 and the radially inner peripheral surface 49 of the end section 29 of the spring brake cylinder 3 introduced translationally. This step therefore corresponds to the typical translation movement in the production of a bayonet connection.

Subsequently, the spring accumulator brake cylinder 3 and the supporting and connecting wall 5 twisted against each other, such that the first and second locking elements of the bayonet connection 27 can engage behind positively. This step then corresponds to the typical rotational movement following the translation movement during the production of a bayonet connection.

Alternatively, if the first flange 31 the support and connection wall 5 the end section 29 of the spring brake cylinder 3 axially overlapped and radially overlaps, so are the first elastic ring seal 39 in a first groove and the second elastic ring seal 41 in a second groove of the radially outer peripheral surface of the end portion 29 of the spring brake cylinder 3 positioned. Then the second ring surface 35 with the second locking elements of the first elastic ring seal 39 and the second elastic ring seal 41 interposed.

Subsequently, the end portion 29 of the spring brake cylinder 3 in the first flange part 31 the support and connection wall 5 translationally introduced, under axial engagement of the first and second locking elements of the bayonet connection 27 and with radial clamping of the first elastic ring seal 39 and the second elastic ring seal 41 between the radially inner peripheral surface of the first flange portion 31 the support and connection wall 5 and the radially outer peripheral surface of the end portion 29 of the spring brake cylinder 3 ,

Finally, the spring accumulator brake cylinder 3 and the supporting and connecting wall 5 rotated against each other, so that the first and the second locking elements can engage behind a positive fit.

The elastic compression of the two ring seals 39 . 41 in the radial direction between the first flange part 31 the support and connection wall 5 and the end section 29 of the spring brake cylinder 3 on the one hand ensures a sealing of the pressure chamber 11 opposite the atmosphere 43 and on the other hand for a frictional connection between the first flange 31 the support and connection wall 5 and the end section 29 of the spring brake cylinder 3 , which is a release of the bayonet connection 27 with special needs.

LIST OF REFERENCE NUMBERS

1

 Spring Brake

3

 Spring brake cylinder

5

 Supporting and connecting wall

7

 Spring brake piston

9

 storage spring

11

 pressure chamber

13

 inlet

15

 spring chamber

17

 Spring brake piston rod

19

 opening

21

 pressure chamber

23

 poetry

25

 inlet

27

 bayonet connection

29

 end

31

 first flange part

33

 first ring surface

35

 second ring surface

37

 sealing arrangement

39

 first ring seal

41

 second ring seal

43

 the atmosphere

45

 central axis

47

 radially outer peripheral surface

49

 radially inner peripheral surface

51

 first groove

53

 second groove

55

 second flange part

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4135943 A1 [0003]
• DE 102011115122 A1 [0028]

Claims (9)

Pneumatic spring brake cylinder ( 3 ) for braking systems of vehicles, with a) a movable in the axial direction, by a memory spring ( 9 ) actuatable spring brake pistons ( 7 ), which on one side of a pressure chamber ( 11 ) and on the opposite side of one the memory spring ( 9 ) receiving spring chamber ( 15 ) is limited, wherein the memory spring ( 9 ) on the one hand on the spring brake piston ( 7 ) and on the other hand at a bottom of the spring brake cylinder ( 3 ), b) a supporting and connecting wall ( 5 ) with an opening ( 19 ), through which one with the spring brake piston ( 7 ) connected spring brake piston rod ( 17 ) extends in the axial direction, c) a bayonet connection ( 27 ) between one in the region of the pressure chamber ( 11 ) arranged end portion ( 29 ) of the spring brake cylinder ( 3 ) and a first flange part ( 31 ) of the supporting and connecting wall ( 5 ), wherein the bayonet connection ( 27 ) on a first annular surface ( 33 ) of the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) first locking elements and on a second annular surface ( 35 ) of the end section ( 29 ) of the spring brake cylinder ( 3 ) has second locking elements, wherein at least partially overlapping the first annular surface ( 33 ) and the second ring surface ( 35 ) The first and second locking elements engage behind a positive fit, and with d) a sealing arrangement ( 37 ) in the area of the bayonet connection ( 27 ), which between the pressure chamber ( 11 ) and the spring brake cylinder ( 3 ) surrounding atmosphere ( 43 ) has a sealing effect, characterized in that e) the sealing arrangement ( 37 ) at least a first elastic ring seal ( 39 ) and at least one second elastic ring seal ( 41 ), wherein in one direction from the atmosphere ( 43 ) into the pressure chamber ( 11 ) seen the at least one first elastic ring seal ( 39 ) of the bayonet connection ( 27 ) and the at least one second elastic ring seal ( 41 ) of the bayonet connection ( 27 ), and wherein f) the at least one first ring seal ( 39 ) and the at least one second annular seal ( 41 ) in each case between the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) and the end section ( 29 ) of the spring brake cylinder ( 3 ) are radially clamped. Spring brake cylinder according to claim 1, characterized in that with respect to the bayonet connection ( 27 ) or both ring surfaces ( 33 . 35 ) the at least one first elastic ring seal ( 39 ) of the atmosphere ( 43 ) and the at least one second elastic ring seal ( 41 ) of the pressure chamber ( 11 ) is facing. Spring brake cylinder according to one of the preceding claims, characterized in that the at least one first elastic ring seal ( 39 ) and the at least one second elastic ring seal ( 41 ) each have a circular or any cross-section. Spring brake cylinder according to one of the preceding claims, characterized in that the at least one first elastic ring seal ( 39 ) and the at least one second elastic ring seal ( 41 ) each in a groove ( 51 . 53 ) a radially outer peripheral surface ( 47 ) of the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) and / or the end section ( 29 ) of the spring brake cylinder ( 3 ) are included. Spring brake cylinder according to one of the preceding claims, characterized in that it together with a service brake cylinder a combined service brake and spring brake cylinder ( 1 ), with one or one arranged in the service brake cylinder, actuated by a pressure medium (s) service brake piston or service brake diaphragm which or which is in operative connection with a projecting from the service brake cylinder, acting on brake actuation service brake piston rod, which through the opening ( 19 ) of the supporting and connecting wall ( 5 ) extending spring brake piston rod ( 17 ) cooperates with the service brake piston or with the service brake diaphragm and an end portion of the service brake cylinder with a second, from the spring brake cylinder ( 3 ) pointing away flange ( 55 ) of the supporting and connecting wall ( 5 ) connected is. Spring brake cylinder according to one of the preceding claims, characterized in that the end section ( 29 ) of the spring brake cylinder ( 3 ) the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) overlaps. Spring brake cylinder according to one of claims 1 to 5, characterized in that the first flange ( 31 ) of the supporting and connecting wall ( 5 ) the end section ( 29 ) of the spring brake cylinder ( 3 ) overlaps. Method for producing a spring-loaded brake cylinder ( 3 ) according to claim 6, characterized by the following steps: a) positioning the at least one first elastic ring gasket ( 33 ) and the at least one second elastic ring seal ( 41 ) on a radially outer peripheral surface ( 47 ) of the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) such that the first annular surface ( 33 ) with the first locking elements of the at least one first elastic ring seal ( 39 ) and the at least one second elastic ring seal ( 41 ), b) translational insertion of the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) in the end section ( 29 ) of the spring brake cylinder ( 3 ) under axial engagement of the first and second locking elements and with radial clamping of the at least one first elastic ring seal ( 39 ) and the at least one second elastic ring seal ( 41 ) between the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) and the end section ( 29 ) of the spring brake cylinder ( 3 ), d) turning spring accumulator brake cylinders ( 3 ) and supporting and connecting wall ( 5 ) against each other, such that the first and second locking elements engage behind a positive fit. Method for producing a spring-loaded brake cylinder ( 3 ) according to claim 7, characterized by the following steps: a) positioning of the at least one first elastic ring gasket ( 39 ) and the at least one second elastic ring seal ( 41 ) on a radially outer peripheral surface of the end portion ( 29 ) of the spring brake cylinder ( 3 ) such that the second annular surface ( 35 ) with the second locking elements of the at least one first elastic ring seal ( 39 ) and the at least one second elastic ring seal ( 41 ), b) translational insertion of the end section ( 29 ) of the spring brake cylinder ( 3 ) in the first flange ( 31 ) of the supporting and connecting wall ( 5 ) under axial engagement of the first and second locking elements and with radial clamping of the at least one first elastic ring seal ( 39 ) and that of the at least one second elastic ring seal ( 41 ) between the first flange part ( 31 ) of the supporting and connecting wall ( 5 ) and the end section ( 29 ) of the spring brake cylinder ( 3 ), e) rotating spring accumulator brake cylinders ( 3 ) and supporting and connecting wall ( 5 ) against each other, such that the first and second locking elements engage behind a positive fit.

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