Spring for brake pad assembly of brake device

Abstract

A spring (102) for a brake device (100), in particular a brake pad assembly (101) of a disc brake, in which the spring (102) is configured to be slidable onto a form-fitting element (103) of a brake pad backing plate (104), the spring (102) comprising a clamp (105) for fixing the spring (102) to the form-fitting element (103) and a support portion (106) for supporting on and sliding on a brake caliper (107), wherein the support part (106) of the spring (102) has a first leg (13) which is designed to face the brake caliper (107) and has a concave curved shape, and wherein the first leg (13) forms a connection connecting the second leg (12) and the third leg (14) when the brake pad backing plate (104) and the spring (102) are mounted in the brake caliper (107), the third leg (14) is configured to contact the brake caliper (107) in a supporting and sliding manner, the clamp (105) of the spring (102) has a fourth leg (1), a fifth leg (5) and a sixth leg (8) which are designed and arranged such that the legs face the brake pad backing plate (104) when the brake pad backing plate (104) and the spring (102) are mounted in the brake caliper (107), and the spring (102) further comprises a connection leg (16) integrally connecting the clip (105) of the spring (102) to the support portion (106). The invention also relates to a brake pad assembly (101) and to a brake device (100).

Description

Technical Field

[0001] The invention relates to a spring for a brake pad assembly of a braking device, in particular a disc brake, wherein the spring is configured to be pushed onto a form-fitting element of a brake pad back plate. The spring comprises a clamp for fastening the spring to the form-fitting element and a support portion for supporting and sliding on a brake caliper or a brake caliper housing. In this context, a brake pad assembly and a braking device, in particular a disc brake, are also claimed. Background Art

[0002] Disc brakes are used to slow down and stop motor vehicles by the friction generated between the friction surface of the brake pads and the rotating part, i.e. the brake disc. The most common design of a disc brake comprises two brake pads, also called brake blocks, brake discs and brake calipers, which are all mounted in an assembly on one end of the axle of the motor vehicle. Moreover, other suspension components, such as steering and wheel suspension, may be mounted on the ends of the respective axles. The two brake pads are arranged on a brake caliper, which covers the brake disc on both sides, i.e. the inside and the outside. The brake pads are mounted with a friction material surface facing the brake disc and placed parallel to the surface of the brake disc, so that the brake disc can rotate freely between the two blocks without friction. The opposite side of the brake pad carries a metal backing plate or support plate, which points away from the friction material surface, i.e. to the outside. The brake disc is rotationally fixedly connected to the wheel or the wheel hub of the motor vehicle so that the wheel and the brake disc rotate at the same speed. When the brakes are actuated, the brake pads are pressed against the brake disc so that the friction between the respective brake pads and the brake disc slows the rotational speed of the brake disc and wheel until a complete stop.

[0003] Typically, a brake caliper has one or more pistons that can be moved by a hydraulic circuit in a direction perpendicular to the back plate surface when pressure is applied to the brake pedal of a motor vehicle. This piston movement is transmitted to the brake pads, which move closer to the brake disc surface from both sides of the brake disc, thereby clamping the brake disc. The rotational movement of the brake disc generates sliding friction on the pad surface, which is transmitted to the brake caliper via the back plate.

[0004] The conventional design of the back plate consists of a flat laminated metal sheet with a thickness of 5 to 6 millimeters (mm) and a peripheral lateral corresponding form which fits into the brake caliper and has the most effective characteristics for the transmission of the braking force. The back plate of the brake pad must have a contact surface with the brake caliper. These contact surfaces are designed to withstand high mechanical forces during braking. In order to reduce the braking noise that occurs when the brake pad moves in the brake caliper, commonly known as "squeaking", and preferably to avoid this braking noise completely, a clamp (also called a clip) or an elastic spring is usually arranged on the contact surface of the brake pad with the brake caliper. Such a clamp can be used to control the movement of the pad inside the brake caliper in all directions, usually in a tangential direction relative to the direction of rotation of the brake disc and / or in a radial direction relative to the direction of rotation of the brake disc.

[0005] The clamps known in the prior art are usually made of laminated steel with a curved form, with legs facing the two surfaces to be separated. The corresponding leg facing the back plate has a special shape in order to connect to the back plate and support it, with a minimum gap for sliding against the back plate. The leg facing the brake caliper is designed so that it is curved and has a convex face that contacts the surface of the brake caliper. This configuration means that the forces are concentrated on a limited contact area.

[0006] EP 2 072 850 A1 discloses an example of a resilient clip arranged on a back plate for separating the protruding bottom side of the brake pad back plate from the bottom side of the brake caliper. When a corresponding resilient clip or spring is installed in the brake caliper, it prevents direct contact between the lower side of the back plate and the upper surface of the brake caliper and thus avoids the so-called "squeak" when a braking force is applied to decelerate the vehicle. Summary of the invention

[0007] The object of the invention is to provide a spring for a brake pad assembly, a brake pad assembly for a brake device and a brake device with improved NVH properties (noise, vibration and harshness). This object is achieved by the subject matter of claims 1, 12 and 14. Further advantageous embodiments are given in the dependent claims.

[0008] The basic concept of the present invention is to change the convex form of the contact surface between the spring and the brake caliper into a flat form or a concave form. This embodiment improves the stability of the contact surface and reduces the possibility of vibration or deformation of the parts. Moreover, the NVH characteristics are improved, which leads to a better driving feel.

[0009] According to a first aspect of the invention, a spring for a brake pad assembly of a braking device, in particular a disc brake, is proposed, wherein the spring is adapted to be pushed onto a form-fitting element of a brake pad back plate, the spring comprising a clamp and a support portion, wherein the clamp is used to fasten the spring to the form-fitting element, and the support portion is used to be supported on a brake caliper and to slide on the brake caliper, wherein The supporting portion of the spring has a first leg, which is adapted to face the brake caliper and has a concave curved shape, wherein when the brake pad back plate and the spring are mounted inside the brake caliper, the first leg forms a connection between a second leg and a third leg, the second leg and the third leg being adapted to abut against the brake caliper in a supporting and sliding manner, The clamp of the spring includes a fourth leg, a fifth leg and a sixth leg, the fourth leg, the fifth leg and the sixth leg being designed and arranged to face the brake pad backing plate when the brake pad backing plate and the spring are installed inside the brake caliper, and The spring further includes a connecting leg that integrally connects the clamp to the support portion of the spring.

[0010] A spring is to be understood as a clamp, in particular a brake pad clamp or a clamp of a brake pad assembly. These terms are to be understood synonymously. The spring serves to separate the brake pad backing plate of the brake pad assembly from the brake caliper and to reduce the tendency for brake noise and vibration. Moreover, the spring is provided to disengage the two aforementioned metal parts from each other, i.e. the brake pad backing plate on one side and the brake caliper on the other side, in particular when they are mounted in the brake caliper in a radial direction of the axis of rotation of the brake disc. Direct contact between the brake pad backing plate and the brake caliper is prevented.

[0011] The spring has a plurality of legs connected integrally to one another, wherein in the longitudinal extent of the spring, substantially flat and substantially bent or curved legs are arranged in series, alternating one behind the other. Preferably, each bent leg is followed by a flat leg and vice versa. The legs of the spring are connected together integrally and form the spring. The legs of the spring are configured such that the spring substantially forms an S-shape. The spring firstly has legs which are formed and arranged such that they are in contact with the form-fitting elements of the brake pad back plate. These are the legs of the clamp of the spring. The spring also has legs which are formed and arranged such that they are in contact with the brake caliper. These are the legs of the support part of the spring.

[0012] The spring is formed by a clamp, which in the installed state of the brake pad assembly fastens the spring to the brake pad backing plate, a support portion, which in the installed state of the brake pad assembly supports the spring on the brake caliper, and a connecting leg, which can have one or more interconnected legs and integrally connects the clamp to the support portion. In other words, the connecting leg can be formed by a plurality of flat and / or curved legs.

[0013] The form-fitting element of the brake pad back plate is an eyelet or a projection on the brake pad back plate which projects in the circumferential direction of the rotating part, in particular a brake disc. The spring is arranged, in particular clamped, on this form-fitting element in order to separate the brake pad back plate from the brake caliper. The form-fitting element is thus a lateral projection of the brake pad back plate.

[0014] The second leg and the third leg of the spring, which are connected together by the first leg, serve as a contact portion for supporting the spring on the brake caliper and sliding on the brake caliper. In the installed state of the brake pad assembly, the first leg of the support portion of the spring does not contact the brake caliper due to its concave curved form. In other words, the first leg is formed to be curved so that in the installed state of the brake pad assembly, a gap is formed between the first leg and the brake caliper. The support portion is supported on the brake caliper only via the second leg and the third leg. This shape of the support portion is conducive to ensuring that contact with the surface of the brake caliper occurs in two different areas, which are separated from each other and are separated by the length of the arched first leg. Since two contact points are provided instead of only one contact point, a better support of the spring on the back plate of the brake caliper and vice versa can be achieved.

[0015] Preferably, the spring is formed of metal, in particular a stainless laminated flat strip. The spring is preferably made of stainless steel. Thus, the spring can be easily and cheaply produced. The spring is advantageously produced by rolling, stamping and forming. In an exemplary embodiment, the spring has a substantially rectangular cross-section. Preferably, the thickness of the spring is between 0.5 mm and 1.0 mm, in particular between 0.6 mm and 0.8 mm. Preferably, the width of the spring is between 2 mm and 5 mm, in particular between 2.5 mm and 4.0 mm. Preferably, the width and / or thickness of the spring remains substantially constant along its length (i.e. in the theoretically straightened state of the spring). In this sense, the spring is preferably formed without holes, protrusions and / or grooves on the surface.

[0016] Preferably, the spring is configured such that, in the installed state, the spring is connected to the brake pad back plate by a form fit. In other words, the width of the spring is selected such that a form-fitting connection is formed with the brake pad back plate. To this end, the brake pad back plate can preferably have a recess, which, in the installed state of the brake pad assembly, is configured to receive the spring, in particular a single or all legs of a clamp of the spring, by a form fit. In this sense, the width of the spring is designed such that it forms an effective form-fitting connection with the recess width of the form-fitting element or with the lateral protrusion of the brake pad back plate.

[0017] The invention includes the following technical teaching: The fourth leg and / or the fifth leg of the clip is formed so as to make a flat contact with the form-fitting element of the brake pad back plate. As a result, a uniform force transmission without stress peaks can occur between the spring and the brake pad back plate. Moreover, the spring is thereby better supported on the brake pad back plate and vice versa.

[0018] Preferably, in the installed state of the spring, the surface of the fourth leg facing the brake pad back plate and the surface of the fifth leg facing the brake pad back plate are arranged at an angle of 90° to each other. This is advantageous in the installed state of the brake pad assembly in the braking device in order to ensure a firm connection between the brake pad back plate and the clamp.

[0019] Preferably, the opening distance between the fourth leg and the sixth leg is smaller than the thickness of the brake pad back plate. This ensures that when the spring is mounted on the brake pad back plate, the spring is fixedly connected to the brake pad back plate by elastic deformation of the legs of the clamp. In a preferred embodiment, the opening distance is 0.5 to 1.5 mm smaller than the thickness of the brake pad back plate.

[0020] In an exemplary embodiment, the seventh leg is arranged on the side of the third leg opposite to the first leg, the seventh leg being shorter in its longitudinal extent than the fourth leg. This ensures that in the installed state of the brake pad assembly there is no contact between the seventh leg and the fifth leg or another leg of the clamp.

[0021] According to a second inventive aspect, a brake pad assembly for a brake device is provided, the brake pad assembly comprising at least one spring according to the first inventive aspect, wherein the spring is arranged on a brake pad backing plate. Thus, the brake pad assembly comprises one or more brake pad backing plates and corresponding springs, a brake pad being arranged on each brake pad backing plate. Preferably, each brake pad backing plate is received on a brake caliper via two springs. The brake caliper may be a brake caliper housing or a part of a brake caliper housing.

[0022] Preferably, the brake pad backing plate has a recess which is configured to receive a leg of the clamp by form fit, so that a movement of the brake pad backing plate relative to the spring in a circumferential direction of the brake disc of the braking device and vice versa is prevented. Preferably, the recess at least partially receives the fourth leg of the spring so as to form a form fit connection.

[0023] According to a third invention aspect, a braking device is proposed, which includes a brake pad assembly according to the second invention aspect. The braking device is preferably configured as a disc brake. The braking device has a brake caliper, in which, in the installed state, a brake disc and the brake pad assembly are arranged; when the braking device is correspondingly activated, the brake disc can be brought into frictional contact with the brake pad of the brake pad assembly. The braking device or disc brake preferably includes: two brake pads, each brake pad is formed by a brake pad backing plate and a brake pad arranged thereon; a brake disc; and a brake caliper. The two brake pads are arranged on a brake caliper, which covers the brake disc on both sides transverse to the direction of travel (i.e., on the inside and on the outside).

[0024] The above definitions and statements about the technical effects, advantages and advantageous embodiments of the spring according to the present invention in the first invention aspect are also applicable to the brake pad assembly according to the present invention and the brake device according to the present invention in the third invention aspect, and vice versa. It should be understood that the features described in the above technical solutions or claims and / or drawings can also be combined in some cases to achieve corresponding achievable advantages and effects in a cumulative manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Preferred exemplary embodiments of the present invention are explained in more detail below with reference to the accompanying drawings, wherein the same or similar elements carry the same reference numerals. In the drawings:

[0026] Figure 1 shows a schematic cross-sectional view of a brake device according to the invention in the form of a disc brake,

[0027] Figure 2 It shows that according to the present invention Figure 1 A schematic perspective view of a brake pad of a brake pad assembly of a brake device (only partially shown),

[0028] Figure 3 Shown according to Figure 2 A first detailed perspective view of a brake pad,

[0029] Figure 4 Shown according to Figure 2 and Figure 3 A second detailed perspective view of the brake pad,

[0030] Figure 5 Shown according to Figures 2 to 4 A third detailed perspective view of the brake pad,

[0031] Figure 6 Shown according to Figure 1 The brake device (partially shown) is arranged according to Figures 2 to 5 A highly schematic cross-sectional view of a brake pad assembly in the installed state,

[0032] Figure 7 It shows that according to the present invention, Figures 1 to 6 A schematic perspective view of a spring of a brake pad assembly prior to assembly, and

[0033] Figure 8 It shows that according to the present invention, Figure 7 Schematic diagram of the spring of the brake pad assembly before assembly. DETAILED DESCRIPTION

[0034] Figure 1 A brake device 100 in the form of a disc brake according to the invention is shown, which can be actuated mechanically. The disc brake 100 has a brake caliper 107 which has a U-shaped cross section in a known manner. The brake caliper 107 is Figure 1 The right leg shown comprises an actuation piston 108 which can be displaced by mechanical actuation and which is guided in a cylinder (not shown here). The actuation piston 108 can be moved in a direction towards the brake disc 109 or away from the brake disc 109 so that the outer brake pad 110 and the inner brake pad 111 can be pressed against the brake disc 109 or separated therefrom. The cylinder acts as a reaction element which acts on the facing reaction surfaces of the brake caliper 107 during mechanical actuation of the disc brake 100 so that both the outer brake pad and the inner brake pad of the corresponding brake pad 110, 111 can be pressed substantially simultaneously.

[0035] The respective brake pad 110, 111 is formed by a respective brake pad backing plate 104 and an associated brake pad 112, wherein the respective brake pad 112 is physically arranged between a brake disc 109 and the respective brake pad backing plate 104. The brake disc 109 is arranged between the two brake pads 112. The brake pads 110, 111 are part of a brake pad assembly 101 according to the invention.

[0036] according to Figures 2 to 5 Combined with Figure 1 and Figure 6, on the opposite side of the brake pad back plate 104 of the respective brake pads 110, 111 in the circumferential direction of the brake disc 109, a form-fitting element 103 is formed, which is integrally connected to the rest of the brake pad back plate 104 of the respective brake pads 110, 111. The respective form-fitting element 103 is a lateral protrusion of the brake pad back plate 104. The spring 102 according to the present invention is arranged to act on each form-fitting element 103. The respective spring 102 is configured to be pushed onto the associated form-fitting element 103 of the brake pad back plate 104, wherein the respective spring 102 is designed and arranged so that the brake pad back plate 104 is supported on the brake caliper 107 in a sliding manner, as shown in FIG. Figure 6 As shown. The respective brake pad back plate 104 is thus separated from the brake caliper 107 by the two springs 102 fastened thereto, thereby reducing the tendency of the brake device 100 to emit brake noise and vibrations when actuated. Next, one of the form-fitting elements 103 of the brake pad back plate 104 is considered and shown as an example, wherein the respective other form-fitting element 103 of the same brake pad back plate 104 is formed to be mirrored thereto.

[0037] according to Figure 7 and Figure 8 Combined with Figures 3 to 6 , the spring 102 comprises a clamp 105, which is configured for fastening the spring 102 to the form-fitting element 103, and a support portion 106, which is configured for supporting on and sliding on the brake caliper 107. In the present case, the spring 102 consists of fifteen legs, some of which are formed flat, i.e. not curved, and some of which are formed curved, and these legs are integrally connected together, so that the spring 102 substantially forms an S-shape. The spring 102 is formed of a stainless laminated flat strip (here stainless steel) and has a rectangular cross-sectional profile. Throughout its entire extent, the spring 102 has a constant thickness D1 between 0.6 mm and 0.8 mm, and a constant width B between 2.5 mm and 4.0 mm. The spring 102 is also formed without holes, protrusions and / or grooves on the surface.

[0038] In the installed state of the brake pad assembly 101, the support portion 106 of the spring 102 is arranged to face the brake caliper 107. The spring 102 has a first leg 13, a second leg 12 and a third leg 14, wherein the first leg is formed with a concave curvature and integrally connects the second leg 12 and the third leg 14 together. Figure 6It is particularly shown that when the brake pad backing plate 104 and the spring 102 are mounted on or in the brake caliper 107, due to the curved form, the first leg 13 does not rest on the brake caliper 107, while the second leg 12 and the third leg 14 serve as contact points between the spring 102 and the brake caliper 107 and therefore rest on the brake caliper 107. The legs 12, 14 are constructed and formed so that the spring 102 can slide on the surface of the brake caliper 107. Therefore, the first leg 13 should be understood as a connecting portion of the second leg 12 and the third leg 14. At the side of the third leg 14 opposite to the first leg 13, a seventh leg 15 is arranged, which is formed shorter than the fourth leg 1. This prevents the support portion 106 from resting on the clamp 105.

[0039] In the mounted state of the brake pad assembly 101, the clamp 105 of the spring 102 is arranged facing the form-fitting element 103 of the brake pad back plate 104. The clamp 105 comprises a fourth leg 1, a fifth leg 5 and a sixth leg 8, wherein the legs 1, 5, 8 are designed and arranged such that they surround the form-fitting element 103 and thus fasten the spring 102 to the brake pad back plate 104. Furthermore, when the brake pad back plate 104 and the spring 102 are mounted on or in the brake caliper 107, the legs 1, 5, 8 rest on the brake pad back plate 104.

[0040] In the installed state, the spring 102 is also connected to the brake pad backing plate 104 by form fit. For this purpose, the brake pad backing plate 104 has a recess 113, which is configured to receive a leg of the clamp 105 by form fit. In the present case, the recess 113 is arranged so that the fourth leg 1 of the spring 102 is inserted into the recess and prevents the spring 102 from moving relative to the brake pad backing plate 104 in the circumferential direction of the brake disc 109, and vice versa.

[0041] The fourth leg 1 and the fifth leg 5 are configured so that they are in flat contact with the form-fitting element 103 of the brake pad back plate 104. In the installed state of the spring 102, the surface 1a of the fourth leg 1 facing the brake pad back plate 104 and the surface 5a of the fifth leg 5 facing the brake pad back plate 104 are arranged at an angle of 90° to each other. Moreover, the opening distance A between the fourth leg 1 and the sixth leg 8 is smaller than the thickness D2 of the brake pad back plate 104, so that when the spring 102 is clamped onto the brake pad back plate 104, a supporting effect is achieved and the spring 102 is firmly seated on the form-fitting element 103 of the brake pad back plate 104.

[0042] The clamp 105 and the supporting portion 106 are integrally connected together via the connecting leg 16 , wherein the connecting leg 16 is formed by the eighth leg 9 , the ninth leg 10 and the tenth leg 11 .

[0043] The eleventh leg 2 , the twelfth leg 3 and the thirteenth leg 4 are arranged between the fourth leg 1 and the fifth leg 5 and are configured such that they do not come into contact with the form-fitting element 103 of the brake pad back plate 104 .

[0044] The fourteenth leg 6 and the fifteenth leg are arranged between the fifth leg 5 and the sixth leg 8 and are configured such that they do not come into contact with the form-fitting element 103 of the brake pad back plate 104 .

[0045] In the theoretical straightened state of the spring 102, the eleventh leg 2 is integrally formed on the fourth leg 1, the eleventh leg 2 is adjacent to the twelfth leg 3, the twelfth leg 3 is adjacent to the thirteenth leg 4, the thirteenth leg 4 is adjacent to the fifth leg 5, the fifth leg 5 is adjacent to the fourteenth leg 6, the fourteenth leg 6 is adjacent to the fifteenth leg 7, the fifteenth leg 7 is adjacent to the sixth leg 8, the sixth leg 8 is adjacent to the eighth leg 9, the eighth leg 9 is adjacent to the ninth leg 10, the ninth leg 10 is adjacent to the tenth leg 11, the tenth leg 11 is adjacent to the second leg 12, the second leg 12 is adjacent to the first leg 13, the first leg 13 is adjacent to the third leg 14 and the third leg 14 is adjacent to the seventh leg 15.

[0046] Legs 1, 3, 5, 7, 9, 11 and 15 are formed to be substantially flat, whereas legs 2, 4, 6, 8, 10, 12, 13 and 14 are formed to be substantially curved.

[0047] Reference numerals list

[0048] 1The fourth leg of the spring

[0049] 1a Surface of the fourth leg

[0050] 2 Eleventh leg of the spring

[0051] 3 The twelfth leg of the spring

[0052] 4 Spring 13th leg

[0053] 5 The fifth leg of the spring

[0054] 5a The surface of the fifth leg

[0055] 6 Spring 14th leg

[0056] 7 Spring 15th leg

[0057] 8 The sixth leg of the spring

[0058] 9 The eighth leg of the spring

[0059] 10 The ninth leg of the spring

[0060] 11 The tenth leg of the spring

[0061] 12 The second leg of the spring

[0062] 13 The first leg of the spring

[0063] 14 The third leg of the spring

[0064] 15 Seventh leg of the spring

[0065] 16 Connect the legs

[0066] 100 brakes or disc brakes

[0067] 101 brake pad assembly

[0068] 102 Spring

[0069] 103 Brake pad backing plate form fitting element

[0070] 104 Brake pad backing plate

[0071] 105 Spring Clamp

[0072] 106 Spring support part

[0073] 107 brake calipers

[0074] 108 Actuating piston

[0075] 109 brake disc

[0076] 110 outer brake pad

[0077] 111 inner brake pad

[0078] 112 brake pads

[0079] 113 grooves

[0080] A Opening distance

[0081] B Spring Width

[0082] D1 spring thickness

[0083] D2 The thickness of the brake pad backing plate.

Claims

1. A spring (102) for a brake pad assembly (101) of a braking device (100), in particular a disc brake, the spring (102) being adapted to be pushed onto a form-fitting element (103) of a brake pad back plate (104), the spring (102) comprising a clamp (105) for fastening the spring (102) to the form-fitting element (103) and a support portion (106), wherein the clamp (105) is used to fasten the spring (102) to the form-fitting element (103), and the support portion (106) is used to be supported on a brake caliper (107) and to slide on the brake caliper, Features - the supporting portion (106) of the spring (102) has a first leg (13) adapted to face the brake caliper (107) and having a concave curved shape, wherein when the brake pad back plate (104) and the spring (102) are mounted inside the brake caliper (107), the first leg (13) forms a connection between a second leg (12) and a third leg (14), the second leg (12) and the third leg (14) being adapted to abut against the brake caliper (107) in a supporting and sliding manner, - the clamp (105) of the spring (102) comprises a fourth leg (1), a fifth leg (5) and a sixth leg (8), the fourth leg (1), the fifth leg (5) and the sixth leg (8) being designed and arranged to face the brake pad backing plate (104) when the brake pad backing plate (104) and the spring (102) are mounted inside the brake caliper (107), and - The spring (102) also comprises a connecting leg (16) which integrally connects the clamp (105) to a supporting portion (106) of the spring (102).

2. The spring (102) according to claim 1, wherein: The spring (102) is formed of metal.

3. The spring (102) according to claim 2, wherein: The spring (102) is formed from a stainless laminated flat strip.

4. The spring (102) according to any one of the preceding claims, wherein The fourth leg (1) and / or the fifth leg (5) are formed so that the fourth leg (1) and / or the fifth leg (5) are in flat contact with the form-fitting element (103) of the brake pad back plate (104).

5. The spring (102) according to claim 4, wherein: In the assembled state of the spring (102), a surface (1a) of the fourth leg (1) facing the brake pad back plate (104) and a surface (5a) of the fifth leg (5) facing the brake pad back plate (104) are arranged at an angle of 90° to each other.

6. The spring (102) according to any one of the preceding claims, having a thickness (D1) between 0.5 mm and 1.0 mm.

7. The spring (102) according to any one of the preceding claims, comprising a width (B) between 2 mm and 5 mm.

8. The spring (102) according to any of the preceding claims, the spring (102) being designed such that it is connected to the brake pad back plate (104) in a form-locking manner in the assembled state.

9. The spring (102) according to any one of the preceding claims, wherein The spring (102) is formed without holes, protrusions and / or grooves on the surface.

10. The spring (102) according to any one of the preceding claims, wherein An opening distance (A) between the fourth leg (1) and the sixth leg (8) is smaller than a thickness (D2) of the brake pad back plate (104).

11. The spring (102) according to any one of the preceding claims, wherein The seventh leg (15) is arranged on a side of the third leg (14) opposite to the first leg (13), and the seventh leg (15) is shorter than the fourth leg (1) in its longitudinal extent.

12. A brake pad assembly (101) for a braking device (100), comprising at least one spring (102) according to any one of the preceding claims, the spring being arranged on a brake pad back plate (104).

13. The brake pad assembly (101) according to claim 12, wherein: The brake pad backing plate (104) comprises a groove (113) which is configured to receive the leg (1) of the clamp (105) in a form-locking manner so that the brake pad backing plate (104) is prevented from moving relative to the spring (102) in a circumferential direction of a brake disc (109) of the brake device (100), and vice versa.

14. A braking device (100), in particular a disc brake, comprising a brake pad assembly (101) according to claim 12 or 13.

Images