Mounting kit and procedure for changing the pads of a disc brake

Abstract

A mounting set comprising a brake pad (3), in particular a brake pad (3) for a commercial vehicle and a spacer (16) for mounting the brake pad (3) in a disc brake (1), wherein the spacer (16) a beam (17) for insertion into a space between a plane formed by a brake carrier (8) of the disc brake parallel to its brake disc and a brake caliper (4) of the disc brake (1) and has a bearing area (19) for storing the beam (17) in the inserted position in the disc brake (1), wherein the spacer (16) has at least a means for axially fixing the beam (17) in its inserted position on the disc brake (1) and a method for mounting a brake pad into a disc brake.

Description

[0001] The present invention relates to an assembly kit and a method for changing the lining of a disc brake.

[0002] When replacing brake pads on a commercial vehicle disc brake, it is particularly important to avoid damaging the seals of the caliper guide and / or the pressure piece guide. Such a seal is usually designed as a bellows, the folds of which can protrude into the space between the brake carrier and the caliper when the brake pad is removed.

[0003] The object of the present invention is therefore to reduce or completely avoid the risk of damage to the aforementioned seals, starting from the assembly situation described above.

[0004] The present invention solves this problem by providing an assembly kit with the features of claim 1 and by providing a method with the features of claim 10.

[0005] An assembly set according to the invention comprises a brake pad, in particular a brake pad for a commercial vehicle, and a spacer for mounting the brake pad in a disc brake.

[0006] The spacer is only relevant when changing brake pads. Therefore, it is a disposable accessory, and its size and shape can vary depending on the type of brake pad and the brake system. It is therefore recommended that the spacer be included in a brake pad kit for pad replacement. The installation kit can optionally include packaging, such as a box or carton, in one or more parts.

[0007] The spacer can have a beam for insertion into an area between a brake carrier and a brake caliper of the disc brake, as well as a bearing area for supporting the beam in its inserted position within the brake. The term "beam" refers only to the shape of the spacer as seen from a view and provides no information about its thickness. Thus, the beam can also be strip-shaped, for example, made of cardboard.

[0008] The bearing area prevents the beam from slipping through the gap between the brake carrier and the brake caliper. The bearing area thus serves to radially support the beam. This support can be achieved, for example, by bracing it against an outer side or edge of the brake caliper.

[0009] Furthermore, the spacer has at least one means for axially fixing the beam in its inserted position on the disc brake. While the bearing area can only be formed as a support, the means for axially fixing the beam allow the spacer to be fixed against displacement in a direction parallel to the axis of rotation of the brake disc or against rotation within the space. This allows the beam to be held or pressed against the brake caliper and / or the clamping device located therein, enabling secure fixing of the spacer and protection of the aforementioned seals.

[0010] During installation, a spacer is always positioned between the respective seal, e.g., the bellows, and the brake pad. Therefore, mechanical damage to the seal during brake pad replacement is impossible.

[0011] Advantageous embodiments of the invention are the subject of the dependent claims.

[0012] It is advantageous if the spacer is positively fixed to a wall of the packaging. This allows for significant savings in packaging volume.

[0013] The spacer can be designed in a space-saving and easy-to-handle, plate-shaped manner.

[0014] The spacer can be made from cardboard in an environmentally sustainable way, or at least comprise a layer of cardboard.

[0015] The spacer can, in particular, form part of a packaging wall and be detached from the packaging via a predetermined breaking point. This is especially sustainable because part of the packaging is reused for assembly. Such considerations have not previously been a focus in the field of brake manufacturing.

[0016] Furthermore, the spacer, in particular the bearing area, may have an undercut designed to engage behind an edge of a brake caliper, thus enabling secure positioning on the brake.

[0017] The undercut can protrude parallel to the beam from the bearing area, making its function relatively intuitive to recognize during assembly.

[0018] The invention further comprises a method for mounting a brake pad in a disc brake, wherein the disc brake includes a brake disc and a brake carrier with a pad recess and a brake caliper, in particular a linearly displaceable brake caliper. The disc brake also has a gap between a plane formed by the brake carrier and extending parallel to the brake disc and the brake caliper. This gap can be located between the brake carrier itself and the brake caliper or at the level of the pad recess, but in the plane of the brake carrier. The method comprises at least the following steps: i) Inserting and positioning a spacer in the gap, partially contacting the brake caliper or a clamping device arranged therein and ii) Inserting the brake pad into the pad recess, past the spacer, to a final position within the pad recess; and iii) Removing the spacer from the gap.

[0019] The process steps clearly demonstrate that the spacer can be used as an assembly aid in a straightforward manner. By positioning the spacer, a gap is created between the brake pad and the seal(s) during brake pad installation, preventing damage to the seal(s) when the brake pads are inserted.

[0020] It is advantageous if the clamping device has a linearly movable pressure piece or a linearly movable brake caliper, wherein the disc brake has a flexible and / or elastic seal that is fixed on one side to the brake caliper or the pressure piece.

[0021] The seal is positioned within the brake such that it spans the opening of a guide channel for the linear guidance of the brake caliper. Alternatively, it can span an insertion opening in the interior of a brake caliper or a guide channel of the pressure piece.

[0022] The aforementioned seal is protected from damage by the aforementioned spacer. The spacer can be positioned, at least partially, in the gap adjacent to the seal.

[0023] A spacer can be a preferred spacer in the design of the aforementioned assembly set according to the invention.

[0024] For particularly secure positioning, the spacer can be positively locked to the brake caliper in step i).

[0025] The invention will now be explained in more detail using an exemplary embodiment and the accompanying figures. These show: Fig. 1 a perspective view of a disc brake for the use of a spacer of a mounting set according to the invention; Fig. 2 an enlargement of the bearing area for the storage of the movable brake caliper and the spacer used in this area; Fig. 3 a perspective view of the spacer of the Fig. 2; Fig. 4. A perspective view of packaging with such a spacer as part of a wall; and Fig. 5 a detailed view of the disc brake of the Fig. 1.

[0026] Fig. 1 and Fig. Figure 5 shows a disc brake 1 according to the invention for a commercial vehicle with a brake disc (not shown) and brake pads 3. The disc brake of the Fig. 1 is designed as a floating caliper disc brake. It has a sliding brake caliper 4, which divides the brake pads into a clamping-side brake pad 3 and a reaction-side brake pad.

[0027] The in Fig. The disc brake shown in Figure 1 can be used particularly for commercial vehicles over 3.5 tons. The brake caliper 4 can have a mounting opening in the area of ​​the caliper back, which is sufficiently large to allow the brake pads to pass through but too small to allow the brake disc to pass through. The brake disc has a brake disc rotation axis 2a, which runs in the y-direction. The y-direction is subsequently also referred to as the axial direction. The brake disc lies in an xz-plane. The brake pads 3 can each be installed in a [missing information - likely a specific location or feature] for illustrative purposes. Fig. 1. The brake lining channel of a brake carrier (not shown) is inserted. The brake carrier 8 and the lining channel 7 are at least partially in Fig. Figure 5 shows that the outer walls of the brake lining chamber can preferably be straight. The brake linings are preferably loosely guided in the brake lining chamber and can be inserted in a perpendicular insertion direction to the cross-section of the mounting opening up to a chamber floor of the brake lining chamber.

[0028] The mounting opening can be spanned by a locking bracket, which prevents the brake pads from being lifted out of the pad recess. A pressure piece 9 of a clamping device is arranged adjacent to the pad recess. The clamping device can include a power transmission unit, e.g., a pressure spindle device, a hydraulic, electromechanical, and / or pneumatic drive unit, or the like, which is arranged in an interior space within the brake caliper 4. The power transmission device can, for example, include a pressure lever, a brake shaft, and the like. Such clamping devices are known per se.

[0029] The force transmission device is inserted into the interior of the brake caliper 4 via an insertion opening 13 and mounted or positioned there. The insertion opening 13 itself is sealed, with the design of the seal 14 taking into account the movement of the pressure piece 9. Various designs of pressure pieces are known. These include pressure pieces with pressure heads and guide rods, cylindrical pressure pieces, or pressure piece plates with one or more guide arms, e.g., spindle rods. The brakes have one or more guide channels in which one or more individual parts of the pressure pieces, such as guide arms, or the entire pressure piece, are guided for linear movement.

[0030] Furthermore, a disc brake 1 has at least two bearings 5, 6, preferably configured as a fixed bearing and a floating bearing, which serve to guide the linearly displaceable brake caliper 4 during the reaction-side clamping movement. One or both bearings 5, 6 are preferably designed as plain bearings. The bearings 5, 6 have a cylindrical plain bearing sleeve, which is slidably arranged on a guide bar and which is fixedly arranged with the brake carrier 8. The plain bearing sleeve defines a guide channel, and the sliding sleeve can be fixedly connected to the rest of the brake caliper 4, which is thereby linearly movable, in particular by means of a plain bearing, on the guide bar. Here, too, a correspondingly flexible and / or elastic seal 14' is provided to cover the guide channel and the guide bar.

[0031] Typically, in these linearly movable sliding bearing sleeves or guide rails of the brake caliper 4 and / or the pressure piece 9, the respective seals 14 and 14' are designed to be flexible and / or elastic in such a way that the seal is fixed beyond the guide pin on the pressure piece 9 and / or on the brake caliper 4, so that the seal either spans the insertion opening or at least the opening of the respective guide channel. In both cases, the seal 14, 14' has a certain material protrusion to compensate for the length differences compared to the extended state of the pressure piece and / or the brake caliper. The material protrusion can be, among other things, designed as a bellows.

[0032] When changing the brake lining, especially the clamping-side brake lining, damage to the seal 14, 14' can occur. To keep the brake lining 3 away from the seal during installation, a spacer 16 is provided within the scope of the present invention, which is Fig. 2 is inserted and positioned in the area between the brake caliper 4 and the brake carrier 8, in whose pad recess 7 one of the brake pads 3 is arranged. The spacer 16 is described in detail in Fig. Figure 3 shows the spacer 16 having a beam 17 with a free first end 18 and a bearing area 19 at the second end 20 of the beam 17. The beam 17 has a beam width b1 and a longitudinal extent l1. The bearing area 19 has a width b2, which is greater than the beam width b1. The longitudinal extent l1 of the beam 17 is at least twice as great as the longitudinal extent l2 of the adjacent bearing area 19. The bearing area 19 has a stop edge 20b, which is designed to rest on the brake caliper 4.

[0033] Furthermore, an overreach 21 can be advantageously provided at the bearing area, which projects parallel to the beam 17 opposite the reference line 20a, which is defined by the stop edge 20b, and which, when the beam 17 is placed laterally against the brake caliper 4, overreaches it at an edge 15 and thereby fixes the spacer 16.

[0034] The spacer 16 is plate-shaped, with the plate thickness extending perpendicular to the beam width b1 and the longitudinal extent l1. The entire spacer 17 extends over a single plate plane P. The spacer 16 serves to guide the brake pad 3 during its installation in the brake carrier 8 and protects the seal 14' during the lateral insertion of the brake pad.

[0035] In a first step, the spacer can be pre-positioned and preferably fixed on the brake, in particular on the brake caliper 4, as part of an assembly method according to the invention.

[0036] Subsequently, the brake pad 3, in particular the clamping-side brake pad 3, can be inserted past the spacer, preferably into the pad recess of the brake caliper, until its final position is reached.

[0037] Finally, the spacer 16 is removed from the brake, in particular from the area of ​​the brake's air play.

[0038] The spacer 16 can be made of a rigid material, meaning that it does not bend under its own weight. The spacer can preferably be made of cardboard or plastic. Within the scope of the present invention, the spacer 16 can be provided in or on a packaging 22 for the brake pads 3. An example of such packaging 22 is shown in Fig. 4 shown.

[0039] Preferably, the brake pad 3 can be packaged individually, as part of a brake pad set, or pre-assembled in a disc brake 1 within a box-like container 22. The box-like container can be single- or multi-piece, particularly with a separate lid. A wall 23 of the container 22 can incorporate the spacer 16 as an integral wall segment, which is preferably removable from the container wall via a predetermined breaking point 24. This saves packaging space and ensures that the spacer cannot be lost during packaging. REFERENCE MARK 1 disc brake 2a Brake disc pivot axis 3 brake pads 4 brake calipers 5 bearings 6 bearings 9 printing piece 13 Insertion opening 14 Seal (pressure piece) 14' Seal (bearing) 15 edge (brake caliper) 16 spacers 17 bars 18 free ending 19 Storage area 20 End of bar 20a Reference line 20b Stop edge 21. Backstabbing 22 Packaging 23 wall 24 Breakaway point b1 Beam width b2 Width (storage area) l1 Longitudinal extent (beam) 12 Longitudinal extent (storage area)

Claims

[1] Mounting set comprising a brake pad (3), in particular a brake pad (3) for a commercial vehicle and a spacer (16) for mounting the brake pad (3) in a disc brake (1), characterized by , that the spacer (16) a beam (17) for insertion into a space between a plane formed by a brake carrier (8) parallel to the brake disc of the disc brake and a brake caliper (4) of the disc brake (1) and has a bearing area (19) for storing the beam (17) in the inserted position in the disc brake (1), wherein the spacer (16) has at least a means for axially fixing the beam (17) in its inserted position on the disc brake (1). [2] Mounting kit according to claim 1, characterized by , that the assembly set includes a packaging (22) for the brake pad (3), wherein the spacer (16) is positively fixed to a wall (23) of the packaging (22). [3] Mounting kit according to claim 1 or 2, characterized by , that the spacer (16) is plate-shaped. [4] Mounting kit according to one of the preceding claims, characterized by that the spacer (16) is made of cardboard or at least comprises a layer of cardboard. [5] Mounting kit according to one of the preceding claims, characterized by , that the spacer (16) forms a part of a wall (23) of the packaging (22) and can be separated from the packaging (22) via a predetermined breaking point (24). [6] Mounting kit according to one of the preceding claims, characterized by , that the spacer (16), in particular the bearing area (19), has an undercut (21) as a means for axially fixing the beam (17) in its inserted position on the disc brake (1), which is designed to engage behind the edge (15) of a brake caliper (4). [7] Mounting kit according to one of the preceding claims, characterized by , that the undercut (21) protrudes parallel to the beam (17) from the bearing area (19). [8] Mounting kit according to one of the preceding claims, characterized by , that the storage area (19) has a width (b2) which is greater than the beam width (b1) of the beam (17). [9] Mounting kit according to any one of the preceding claims, characterized by , that the longitudinal extent (l1) of the beam (17) is at least twice greater than the longitudinal extent (l2) of the adjacent bearing area (19). [10] Method for mounting a brake pad (3) into a disc brake (1), wherein the disc brake (1) has at least one brake disc, a brake carrier (8) and a brake caliper (4), wherein the disc brake (1) has a gap between a plane formed by the brake carrier (8) parallel to the brake disc and the brake caliper (4), wherein the method is characterized by the following steps: i) Inserting and positioning a spacer (16) into the gap, at least partially in contact with the brake caliper (4) or a clamping device arranged in the brake caliper (4); ii) Inserting the brake pad (3) into the disc brake, past the spacer (16), to an end position; and iii) Removing the spacer (16) from the gap. [11] Method according to claim 10, characterized by , that the disc brake (1) has a flexible and / or elastic seal (14, 14') which is fixed on one side to the brake caliper or a pressure piece (9) of a clamping device and that the seal (14') spans an opening of a guide channel for linear guidance of the brake caliper (4) or that the seal (14) spans an insertion opening (13) of an interior of the brake caliper (4) and / or the opening of a guide channel of the pressure piece (9). [12] Method according to claim 11, characterized by, that the spacer (16) is arranged at least partially in the space adjacent to the seal (14, 14'). [13] Method according to any one of the preceding claims, characterized by , that the spacer (16) is designed as a spacer (16) according to one of the preceding claims 1-10. [14] Method according to any one of the preceding claims, characterized by , that the spacer (16) is positively locked in the axial direction to the brake disc rotation axis (2a) in step i) on the brake caliper (4).

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