Brake caliper with pad spring

Abstract

Brake caliper, comprehensive: a case (110); Pistons (121, 122) are arranged on opposite sides of the housing (110); inner and outer lining plates (123, 124) which are at least partially arranged in the housing (110) and are movably configured by the pistons (121, 122), each of the inner and outer lining plates (123, 124) having projections (123a, 124a) on opposite sides of each of the inner and outer lining plates (123, 124); inner and outer friction linings (125, 126) coupled to the inner and outer lining plates (123, 124) respectively; and a lining spring (200, 300, 400) comprising a plurality of guide supports (220, 250) configured to guide the movement of the inner and outer lining plates (123, 124), each of the guide supports (220, 250) comprising the following: a concave curved section (230, 260, 330, 430, 460) in which one of the projections (123a, 124a) of the inner and outer covering plates (123, 124) is arranged; and a return tab (240, 270, 340, 440) configured to elastically support one of the inner and outer lining plates (123, 124) such that one of the inner and outer lining plates (123, 124) returns to an original position in response to the movement of one of the inner and outer lining plates (123, 124) by the return tab (240, 270, 340, 440), wherein the concave curved section (230, 260, 330, 430, 460) of the lining spring comprises an upper part (230a, 260a), a side part (230b, 260b) which is bent downwards from the upper part (230a, 260a) of the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400), and a lower part (230c, 260c) which extends from the side part (230b, 260b) of the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400) to one of the inner and outer lining plates (123, 124) is bent, and wherein each of the guide supports (220, 250) further comprises a lateral support projection (246, 281) which is curved and extends from a lower section (245, 280) of one of the guide supports (220, 250) which is located below the concave curved section (230, 260, 330, 430, 460) in a direction away from one of the inner and outer covering plates (123, 124).

Description

TECHNICAL AREA

[0001] The present invention relates to a brake caliper with a lining spring and in particular to a brake caliper with a lining spring in a braking device of a vehicle. BACKGROUND

[0002] A braking device fitted to a vehicle is generally a device for slowing down, stopping, or maintaining a stopped state of the vehicle. For example, the braking device provides a braking force by pressing a circular disc that rotates along with a wheel with brake pads on opposite sides. In the braking device, a brake caliper exerts a braking force by bringing a pad into close contact with the disc in the vehicle and is also called a brake caliper.

[0003] It is known in the prior art to guide the linings by means of a lining spring. Such lining springs are disclosed, for example, in DE 10 2016 010 301 A1, DE 10 2017 001 089 A1, US 2006 / 0 037 821 A1, US 2016 / 0 076 612 A1, WO 2017 / 114780 A1, US 2020 / 0 040 953 A1, JP 2013 - 096 454 A, CN 219159409 U and US 2015 / 0 101 895 A1. REVELATION OF THE INVENTION

[0004] It is an object of the present invention to provide a brake caliper that can reduce the number of parts by eliminating pins and / or clamps, shorten the assembly working time and improve the pad behavior.

[0005] According to the invention, this problem is solved by a brake caliper having the features of claim 1.

[0006] According to the present invention, a brake caliper with a lining spring comprises: a housing; pistons arranged on opposite sides within the housing; inner and outer lining plates arranged on opposite sides within the housing and movable by each of the pistons; friction linings arranged on the inner and outer lining plates, respectively; and a lining spring configured to guide movement of the inner and outer lining plates within the housing, each of the inner and outer lining plates having projections on opposite sides, the lining spring comprising two guide supports each of which guides the movement of the inner and outer lining plates, each of which comprises: a concave curved section into which the projections of the inner and outer lining plates are inserted;and a return spring configured to elastically support one of the inner and outer lining plates to return to an original position;

[0007] In some embodiments, the housing may include a recess into which the concave curved section of the lining spring is inserted.

[0008] In some embodiments, the brake caliper may also include an upper connector that joins the upper sections of the two guide supports.

[0009] According to the invention, the concave curved section comprises the following: an upper surface; a side surface that is curved from the upper surface and extends downwards; and a lower surface that is curved from the side surface to the inner and outer covering plates.

[0010] In some embodiments, the upper surface of the concave curved section may include a supporting projection of the upper surface that extends upwards.

[0011] In some embodiments, the reset device can be arranged on the side surface of the concave curved section.

[0012] According to the invention, a lateral support projection, which is curved and extends in a direction away from the inner and outer covering plates, is arranged in a lower section of the guide support, which is located below the concave curved section.

[0013] In some embodiments, the housing may include a recess into which the concave curved section of the lining spring is inserted; the side surface of the concave curved section may include a through hole and an internal support projection extending from an edge of the through hole to the recess of the housing.

[0014] In some embodiments, the recess may include a stepped section on a base, and the inner support projection may be supported by the stepped section.

[0015] In some embodiments, the inner support projection may include a curved section which is supported by the stepped section.

[0016] In some embodiments, the return device may include a curved section that is bent in a direction inwards towards the concave curved section at one end of the return device.

[0017] In some embodiments, the guide support may further include a lower curved support that is bent from a lower end of the guide support to the inner and outer lining plates to support lower sections of the inner and outer lining plates.

[0018] In some embodiments, the upward and downward width of the concave curved section can gradually increase towards the inside of the concave curved section.

[0019] In some embodiments, the projection of the inner and outer covering plates towards the inside of the concave curved section can gradually increase.

[0020] In some embodiments, the housing may include a recess into which the concave curved section of the lining spring is inserted, and the upward and downward width of the recess gradually increases inwards.

[0021] In some embodiments, the return device may include: a first projection that is bent and extends in one direction from the concave bent section to the inner and outer lining plates; a first bent section that is bent inwards towards the concave bent section at one end of the first projection; a second projection that extends from the first bent section in one direction away from the inner and outer lining plates; a second bent section that is bent towards the inner and outer lining plates at one end of the second projection; and a third projection that extends from the second bent section to the inner and outer lining plates.

[0022] According to another embodiment of the present invention, a brake caliper with a lining spring comprises: a housing; pistons arranged on opposite sides in the housing; inner and outer lining plates arranged on opposite sides in the housing and movable by each of the pistons; friction linings arranged on the inner and outer lining plates, respectively;and a lining spring configured to guide movement of the inner and outer lining plates in the housing, the lining spring comprising two guide supports each guiding the movement of the inner and outer lining plates, each of the guide supports comprising a return device configured to elastically support one of the inner and outer lining plates to return to an original position, and the return device comprising a pair of first projections extending while spaced apart from each other.

[0023] In some embodiments, the reset device may further include an end connector that joins the ends of the pair of first projections together.

[0024] In some embodiments, the inner and outer lining plates may include projections on opposite sides, and each of the guide supports may further include a concave curved section into which the projections of the inner and outer lining plates are inserted.

[0025] According to one or more embodiments of the present invention, a brake caliper is provided which is reduced in the number of parts by eliminating pins and clamps, reducing assembly time and improving pad behavior.

[0026] Furthermore, according to one or more embodiments of the present invention, a brake caliper is provided which can smoothly perform a pad return function, while a pad spring stably supports a pad plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other aspects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings. Fig. Figure 1 is a perspective view to illustrate a fixed brake caliper. Fig. Figure 2 is an enlarged view to illustrate a section of the fixed brake caliper, where a pad plate with a pin is inserted. Fig. 1 is coupled. Fig. Figure 3 is a cross-sectional view illustrating a brake caliper brake according to an embodiment of the present invention. Fig. Figure 4 is a perspective exploded view illustrating a brake caliper brake according to the present invention. Fig. Figure 5 is a perspective view illustrating a lining spring in the present invention. Fig.Figure 6 is a view illustrating a coupling relationship between a lining spring and a lining plate in the present invention. Fig. Figure 7 is a view illustrating a lining spring according to another embodiment of the present invention. Fig. Figure 8 is a view illustrating a lining spring according to another embodiment of the present invention. Fig. Figure 9 is a view illustrating a lining spring according to another embodiment of the present invention. Fig. Figure 10 is a table showing an experiment of a restoring force of a lining spring in the present invention. DETAILED DESCRIPTION

[0028] The advantages and features of the present invention and methods for its implementation will become clear from the detailed description of the following embodiments, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but is implemented in various forms. These embodiments merely complete the disclosure of the present invention and are provided to fully inform the person skilled in the art in the field to which the present invention belongs. The present invention is defined only by the scope of the claims. Therefore, in some embodiments, known process steps, known apparatus structures, and known techniques have not been described in detail in order to avoid obscuring the interpretation of the present invention.The same reference symbols denote identical elements throughout the entire description.

[0029] In the drawings, the thickness has been increased to clarify the different layers and areas. The same reference symbols have been assigned to identical parts throughout the description. When a part, such as a layer, film, area, plate, etc., is described as being "on" another part, this includes not only the case where it is "directly on" another part, but also the case where another part is located between them. Conversely, when a part is described as being "directly on" another part, this means that no other part is located between them. Furthermore, when a part, such as a layer, film, area, plate, etc., is described as being "under" another part, this includes not only the case where it is "directly beneath" the other part, but also the case where another part is located in between.Conversely, if a part is described as being "directly underneath" another part, this means that there is no other part in between.

[0030] The spatially relative terms "under," "below," "lower," "above," "above," and the like can be used to easily describe the correlation between elements or components and other elements or components. Spatially relative terms should be understood to encompass various orientations of elements in use or operation in addition to those illustrated in the drawings. For example, if elements illustrated in the drawings are reversed, elements described as "under" or "below" other elements may be located "above" them. Thus, the exemplary term "under" can include directions from both below and above. Elements may also be oriented in other ways, and therefore spatially relative terms can be interpreted according to orientation.

[0031] As used here, when a part is described as being connected to another part, this includes not only the case where it is directly connected, but also the case where it is connected to another element placed in between. Furthermore, when a part includes a specific component, this means that it may also include other components, without excluding other components, unless otherwise specified.

[0032] As used here, terms such as first, second, and third can be used to describe different components, but these components are not limited by the terms. The terms are used for the purpose of distinguishing one component from other components. For example, a first component could be referred to as a second or third component, and so on, and similarly, a second or third component could also be referred to interchangeably without departing from the scope of the present invention.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) as used herein may be used in a meaning generally known to those skilled in the art in the field to which the present invention belongs. Furthermore, terms defined in commonly used dictionaries shall not be interpreted ideally or excessively unless expressly defined in a specific manner.

[0034] Brake calipers can be classified, for example, but not limited to, into a fixed brake caliper, in which brake pads and pistons are arranged on opposite sides of a disc, with a caliper housing fixed so that the pads are in close contact with the disc on opposite sides of the disc to brake; and a double-acting brake caliper, in which a piston arranged on one side of the disc pushes a brake pad and comes into close contact with the disc, and in response the housing moves in the opposite direction so that the brake pad, which is arranged in the housing on the opposite side of the disc, moves towards the disc to brake.

[0035] Fig. 1 and Fig. 2 are views to illustrate a fixed brake caliper 1. Fig. Figure 1 is a perspective view illustrating the fixed brake caliper 1, and Fig.Figure 2 is an enlarged view to illustrate a section where a covering plate and a pin are located in Fig. 1 are coupled.

[0036] The in Fig. 1 The illustrated fixed brake caliper 1 includes a housing 10, pistons 11 and 12, lining plates 13 and 14, friction linings 15 and 16 and a lining spring 20 which is arranged in the housing 10.

[0037] The pistons 11 and 12 are each arranged on opposite sides in the housing 10 of the brake caliper 1, and two pistons 11 are arranged in an inner direction of the vehicle with respect to a disc while the brake caliper 1 is mounted on the vehicle, and two pistons 12 are arranged in an outer direction of the vehicle.

[0038] During braking, the pistons 11 and 12 push the pad plates 13 and 14 and the friction linings 15 and 16 towards the disc.

[0039] The lining plates 13 and 14 are arranged on the piston and are located on opposite sides of the housing 10. During braking, the lining plates 13 and 14 can move towards the disc via the pistons 11 and 12.

[0040] The inner lining plate 13, which is positioned on the inside of the disc, can move by means of two inner pistons 11, and the outer lining plate 14, which is positioned on the outside of the disc, can move by means of two outer pistons 12.

[0041] The inner lining plate 13 and the outer lining plate 14 are coupled with a pin 17, and a clamp 18, configured to prevent the pin 17 from being separated, is fixed to the outside of the inner and outer lining plates 13 and 14.

[0042] The friction linings 15 and 16 are arranged on the lining plates 13 and 14 and move together with a movement of the lining plates 13 and 14 to press the disc, and the friction linings 15 and 16 are respectively arranged on the inner lining plate 13 and the outer lining plate 14.

[0043] The lining spring 20 is arranged at both ends of the inner and outer lining plates 13 and 14 to support the inner and outer lining plates 13 and 14, and is arranged between the housing 10 and both ends of the inner and outer lining plates 13 and 14.

[0044] The lining spring 20 can be fixed by a pin.

[0045] With the fixed brake caliper 1, hydraulic pressure can be provided so that the inner and outer pistons 11 and 12 move forward to press the inner and outer pad plates 13 and 14 and the friction linings 15 and 16, and thus the friction linings 15 and 16 press the disc to generate a braking force.

[0046] In such a case, the inner and outer lining plates 13 and 14 move from opposite sides of the pin 17 in the direction of the disk and are guided by the pin 17 as they move forward.

[0047] In the case of the fixed brake caliper 1, the pin 17 and the clamp 18 may be included to prevent the pin 17 from being separated, to guide the pad plates 13 and 14, and drilling may be required to fix the pin 17 to the housing 10.

[0048] In the following, a brake caliper brake 100 with a lining spring according to an embodiment of the present invention is described in detail with reference to the drawings.

[0049] The brake caliper brake 100 according to one embodiment of the present embodiment is described as an example applied to a fixed brake caliper. However, the present invention is not limited to this.

[0050] Fig. Figure 3 is a cross-sectional view to illustrate a brake caliper brake according to an embodiment of the present invention. Fig. Figure 4 is a perspective exploded view to illustrate a brake caliper brake according to an embodiment of the present invention. Fig. Figure 5 is a perspective view to illustrate a lining spring according to an embodiment of the present invention. Fig.Figure 6 is a view illustrating a coupling relationship between a lining spring and a lining plate according to an embodiment of the present invention. Fig. Figure 7 is a view illustrating a lining spring according to a further embodiment of the present invention. Fig. Figure 8 is a view illustrating a lining spring according to a further embodiment of the present invention. Fig. Figure 9 is a perspective view to illustrate a lining spring according to a further embodiment of the present invention.

[0051] The brake caliper 100 with a lining spring according to an embodiment of the present invention can include a housing 110, pistons 121 and 122, lining plates 123 and 124, friction linings 125 and 126 and a lining spring 200.

[0052] The housing 110 forms a body of the brake caliper 100, and the pistons 121 and 122, the lining plates 123 and 124, the friction linings 125 and 126 and the lining spring 200 are at least partially arranged in the housing 110.

[0053] When the brake caliper 100 is attached to a vehicle with a lower section of the housing 110 open, an upper section of a rotor, such as a brake disc, is inserted into the housing 110 and partially arranged within the housing 110.

[0054] Pistons 121 and 122 are arranged on opposite sides of the housing 110 to press the friction linings 125 and 126, together with the lining plates 123 and 124, against the disc. As shown in Fig.As illustrated in Figure 4, two pistons are arranged on each of the opposite sides of the housing 110, and in the state in which the brake caliper 100 is attached to the vehicle, two pistons 121 are located on an inside of the disc, and two pistons 122 are located on an outside of the disc.

[0055] Accordingly, when hydraulic pressure is applied to a cylinder during braking, the pistons 121 and 122 press the pad plates 123 and 124 as they move forward, and the friction linings 125 and 126, which are coupled to the pad plates 123 and 124, can move forward towards the disc.

[0056] The lining plates 123 and 124 are arranged on the pistons 121 and 122 and are movably mounted to move forward or backward within the housing 110. The lining plates 123 and 124 are located on opposite sides of the housing 110. When the brake caliper 100 is fitted to the vehicle, the inner lining plate 123 is located on an inner side of the disc, and the outer lining plate 124 is located on an outer side of the disc, facing the inner lining plate 123.

[0057] The pad plates 123 and 124 can move towards the disc during braking by means of the pistons 121 and 122, and the inner pad plate 123, which is located on the inside of the disc, can move towards the disc by means of two inner pistons 121, and the outer pad plate 124, which is located on the outside of the disc, can move by means of two outer pistons 122.

[0058] Projections 123a and 124a, which extend outwards, are formed on opposite side surfaces of the inner and outer covering plates 123 and 124.

[0059] Each of the projections 123a and 124a is inserted into concave curved sections 230 and 260 of the lining spring 200, and when the inner and outer lining plates 123 and 124 move towards or away from the disk by the pistons 121 and 122, the projections 123a and 124a can slide while inserted into the concave curved sections 230 and 260 of the lining spring 200.

[0060] As in Fig. 1 and Fig. As illustrated in Figure 2, in the fixed brake caliper 1, the inner pad 13 and the outer pad 14 are coupled to a pin 17 and guided by the pin 17 as they move forward. In the Fig. 3 to Fig.However, in the 9 illustrated embodiments, the projections 123a and 124a on opposite sides of the lining plates 123 and 124 are slidable in a state in which they are inserted into the concave curved sections 230 and 260 of the lining spring 200. Accordingly, in contrast to a Fig. 1 and Fig. In the embodiment shown in Figure 2, the pin 17 is used to guide the covering plates 13 and 14, the clamp 18 prevents the pin 17 from separating, and the hole machining in which the pin 17 is fixed to the housing 10 is shown in the other embodiment shown in Figure 2. Fig. 3 to Fig. 9 illustrated embodiment not required, and accordingly the movement of the covering plates 123 and 124 can be guided stably, while reducing the number of parts and the number of assembly processes and working hours (man hours).

[0061] The friction linings 125 and 126 serve to exert a braking force by pressing the disc during braking, and the friction linings 15 and 16 are each arranged on the inner lining plate 13 and the outer lining plate 14, so that the lining plates 123 and 124 can move together with the movement by the pistons 121 and 122 to press the disc.

[0062] The lining spring 200 is arranged at opposite ends of the lining plates 123 and 124 to support the lining plates 123 and 124 and to guide their forward and backward movement. The lining spring 200 is located between the housing 110 and one of the opposite ends of the lining plates 123 and 124.

[0063] Each configuration of the lining spring 200 according to an embodiment of the present invention is described with reference to the Fig. 5 and Fig. 6 described in detail.

[0064] The lining spring 200 includes an upper connector 210 and two guide supports 220 and 250, which are spaced apart from each other.

[0065] The upper connector 210 forms an upper part of the lining spring 200 and has a substantially flat plate shape, but is not limited to this. The upper connector 210 connects the upper sections of the two guide supports 220 and 250 to each other.

[0066] An upper curved section 211 is formed at an upper end of the upper connector 210 and is bent and inclined upwards from the upper connector 210 in a direction away from the covering plates 123 and 124.

[0067] The guide supports 220 and 250 are spaced apart from each other on opposite sides of the upper connecting section 210 and extend downwards and are coupled to the housing 110 to support the lining plates 123 and 124 and to guide the forward and backward movement of the lining plates 123 and 124.

[0068] Each of the guide supports 220 and 250 is formed in a substantially flat plate shape, but is not limited to this, and the concave curved sections 230 and 260 are formed in the middle of the guide supports 220 and 250 respectively.

[0069] The concave curved sections 230 and 260 are bent in a substantially “c” or “U” shape in one direction away from the lining plates 123 and 124 and are inserted into a recess 111 of the housing 110. Accordingly, the recess 111 of the housing 110, into which the concave curved sections 230 and 260 are inserted, is also formed in a substantially “c” shape in cross-section to match the shape of the concave curved sections 230 and 260 of the lining spring 200.

[0070] The concave curved sections 230 and 260 include upper surfaces or parts 230a and 260a, which are curved in a direction towards the groove 111 of the housing 110 from the upper section of the guide supports 220 and 250, side surfaces or parts 230b and 260b, which are curved from the upper surfaces 230a and 260a and extend downwards, and lower surfaces or parts 230c and 260c, which are curved from the side surfaces 230b and 260b to the covering plates 123 and 124, respectively.

[0071] The upper surfaces or parts 230a and 260a of the concave curved sections 230 and 260 are curved at a substantially right angle to the upper sections of the guide supports 220 and 250 (e.g., in a direction perpendicular to the guide supports 220) and extend in the direction of the recess 111 of the housing 110. A supporting projection or tab 235 of the upper surface, extending upwards, is formed on an inner edge of each of the upper surfaces or parts 230a and 260a adjacent to two guide support sections 220 and 250. The supporting projection or tab 235 of the upper surface rests on an upper edge of the recess 111 in the housing 110 into which the concave curved sections 230 and 260 are fitted.

[0072] The side surfaces or parts 230b and 260b of the concave curved sections 230 and 260 are bent at a substantially right angle to the upper surfaces or parts 230a and 260a (e.g., in a direction perpendicular to the upper surfaces or parts 230a and 260a) and extend downwards. Through holes 231 and 261 are formed in the side surfaces or parts 230b and 260b, and internal support projections or tabs 232 and 262, extending in the direction of the recess 111 of the housing 110, are formed at or extend from a lower edge of the through holes 231 and 261. The internal support projections or tabs 232 and 262 are supported on a base of the recess 111 of the housing 110.For this purpose, the recess 111 of the housing 110 can be formed deeper (in a direction away from the covering plates 123 and 124) than the concave curved sections 230 and 260, and a stepped section 111a can be formed in the recess 111 so that the inner support projections 232 and 262 are supported. As shown in . Fig. As illustrated in Figure 3, the stepped section 111a of the recess 111, which includes a step that is more concave than the bottom of the recess 111, on which the lower surfaces 230c and 260c of the concave curved sections 230 and 260 are supported, can be formed, and the inner support projections 232 and 262 of the lining spring 200 are supported on the stepped section 111a of the housing 110.

[0073] The inner support projections or tabs 232 and 262 can have curved sections 232a and 262a which are bent in a V-shape, and the curved sections 232a and 262a of the lining spring 200 can be supported by the stepped section 111a of the recess 111 to prevent separation from the recess 111 of the housing 110 and to be more firmly supported.

[0074] Furthermore, resetters 240 and 270 (e.g. reset tabs) are formed on inner edges next to the two guide supports 220 and 250 on each of the side surfaces or parts 230b and 260b.

[0075] The return springs 240 and 270 elastically support the lining plates 123 and 124 to return the lining plates 123 and 124 and the friction linings 125 and 126 to their original positions when the brake is released. The return springs 240 and 270 have shapes that are curved and extend outward from an inner edge (e.g., in a direction toward the lining plates 123 and 124) of each of the side faces or parts 230b and 260b. Ends of the return springs 240 and 270 may be curved toward the lining plates 123 and 124. Furthermore, as shown in Fig. Figure 6 illustrates that the ends of the return pieces 240 and 270 include curved sections 242 and 272 which are bent in a direction inwards of the concave curved sections 230 and 260 (e.g. in a direction away from the covering plates 123 and 124).

[0076] As described above, according to one embodiment of the present invention, the lining spring 200 includes the return springs 240 and 270 on the side surfaces of parts 230b and 260b of the concave curved sections 230 and 260, so that the return springs 240 and 270 can elastically support the lining plates 123 and 124 and allow the lining plates 123 and 124 to quickly return to their original positions when the brakes are released. Accordingly, the residual resistance can be reduced or improved when the hydraulic brake pressure is released due to the brakes being released, thereby reducing noise and improving the vehicle's fuel efficiency.

[0077] The lower surfaces or parts 230c and 260c of the concave curved sections 230 and 260 are bent from the side surfaces or parts 230b and 260b to the covering plates 123 and 124 and are supported on the bottom of the recess 111 of the housing 110.

[0078] Lower sections 245 and 280 of the guide supports 220 and 250 are curved and extend downwards from the lower surfaces or parts 230c and 260c of the concave curved sections 230 and 260, and lateral support projections or tabs 246 and 281 are formed on the inner edges adjacent to two guide supports 220 and 250 and project forward from them. The lateral support projections 246 and 281 are curved and extend rearward from the inner edges adjacent to two guide supports 220 and 250 on the lower sections 245 and 280 of the guide supports 220 and 250 (e.g., in a direction away from the covering plates 123 and 124) and are supported by the housing 110.In this way, the side support projections or tabs 246 and 281 are formed on or at the lower sections 245 and 280 of each of the guide supports 220 and 250, so that the fastening of the guide supports 220 and 250 for the lining plates 123 and 124 can be stably secured when the lining plates 123 and 124 move forward (e.g., towards the disc).

[0079] The lining spring 200 includes lower curved sections 247 and 290 at the lower ends of the lower sections 245 and 280 of the guide supports 220 and 250.

[0080] The lower curved sections 247 and 290 are bent at the lower sections 245 and 280 of the guide supports 220 and 250 to support the lower sections of the decking plates 123 and 124, and the lower sections 245 and 280 of the guide supports 220 and 250 are bent and extend forward from the lower ends of the lower sections 245 and 280 (e.g. in a direction towards the decking plates 123 and 124) to support the lower sections of the decking plates 123 and 124.

[0081] Next, an operation of the brake caliper brake 100, which is provided with the lining spring 200, according to an embodiment of the present invention is described.

[0082] When hydraulic pressure is applied during braking in a state where the projections 123a and 124a, formed on opposite sides of the pad plates 123 and 124, are inserted into the concave curved sections 230 and 260 of the pad spring 200, the pistons 121 and 122 press the pad plates 123 and 124 as they move forward (e.g., towards the disc).

[0083] Then the lining plates 123 and 124 are laterally supported or guided by the lining spring 200 and are configured to be sliding.

[0084] Then, as the lining plates 123 and 124 move forward (e.g., towards the disc), as in Fig. Figure 6 illustrates that the covering plates 123 and 124 move forward (e.g., downwards). Fig.6), while they touch the ends of the return springs or return tabs 240 and 270 of the lining spring 200, and the return springs 240 and 270 are deformed together with the advance of the lining plates 123 and 124.

[0085] Simultaneously, as the lining plates 123 and 124 move forward (e.g., towards the disc), the friction linings 125 and 126, which are coupled to the lining plates 123 and 124, press the disc to exert a braking force.

[0086] Then, when the brake is released, the return springs 240 and 270 are returned to their original state by the return force of the brake pad spring 200, as shown in Fig. Figure 6 illustrates that the lining plates 123 and 124, which are released by the hydraulic brake pressure, can return to their original positions by means of the reset devices 240 and 270.

[0087] When the brake is released, if the pad plates 123, 124 do not quickly return to their original position, noise can be generated due to residual resistance, which negatively affects the vehicle's fuel efficiency. According to one embodiment of the present invention, the pad plates 123 and 124 can be quickly returned to their original position by means of the return springs or the return tabs 240 and 270 to improve the residual resistance, thereby improving the vehicle's fuel efficiency along with reducing noise.

[0088] Fig. Figure 10 is a table showing an experiment of a restoring force of the lining spring 200 according to an embodiment of the present invention and showing a restoring force according to the deformation of the restorers 240 and 270 when the lining plates 123 and 124 move forward (e.g., move in the direction of the disc). Fig.Case 1 is an example in which the bent sections 242 and 272 of the ends of the return springs 240 and 270 of the lining spring 200 are bent in a direction away from the lining plates 123 and 124, and Case 2 is an example in which the bent sections 242 and 272 of the ends of the return springs 240 and 270 of the lining spring 200 are bent in a direction towards the lining plates 123 and 124.

[0089] As in Fig. As illustrated in Figure 10, in case 1 the restoring force was greater according to the deformation of the restorers 240 and 270.

[0090] Table 1 below is a table showing resistance values ​​according to a brake pressure (all units of result values: kgf.cm, CL indicates reliability).

[0091] In Table 1, when the brake pressure is 15 bar, the average resistance value is 0.6 when the resetter 240, 270 is applied to a brake pad spring, but it is 22 when the resetter 240, 270 is not applied to a brake pad spring. Accordingly, Table 1 shows that the resistance value is significantly reduced when the resetter 240, 270 is applied to the brake pad spring according to one embodiment of the present invention. [Table 1] category Baseline 15 bar 30 bar Remarks Average Standard deviation Average Standard deviation Average Standard deviation Result 0,5 0,4 0,6 0,4 1,0 0,8 Reset applied CL95% 1,1 1,3 2,4 Result 18,1 5,2 22,0 4,0 30,9 4,2 Backslide nis ler not applied CL95% 26,7 28,6 37,9

[0092] Next, a lining spring 200 according to a second embodiment of the present invention is described with reference to the Fig. 7 to Fig. 9 described. Fig. Figure 7 is a side view to illustrate a lining spring 200 according to a second embodiment of the present invention.

[0093] The lining spring 200 according to a second embodiment of the present invention differs from the first embodiment in that the upward and downward width of the concave curved sections 230 and 260 (e.g. a distance between the lower surface or lower part 230c, 260c and the upper surface or upper part 230a, 260a) in the lining spring 200 gradually increases towards an inside of the recess 111 of the housing 110. In addition, the upward and downward width of the recess 111 of the housing 110 (e.g., a distance between an upper inner surface and a lower inner surface of the recess 111) gradually increases, and the left and right projections 123a and 124a of the covering plates 123 and 124, which are inserted into the concave curved sections 230 and 260, are also designed to have an upward and downward width (e.g.,a thickness or distance between an upper surface and a lower surface of the left and right projections 123a and 124a) which gradually increases towards the inside of the concave curved sections 230 and 260.

[0094] In the second embodiment, the upward and downward width of the concave curved sections 230 and 260 of the lining spring 200, the recess 111 of the housing 110, and the left and right projections 123a and 124a of the lining plates 123 and 124 gradually increases towards the inside of the concave curved sections 230 and 260. When the lining plates 123 and 124 are guided by the lining spring 200 to move in a sliding manner, left and right movements can be suppressed, thus improving the straightness of the lining plates 123 and 124 and allowing the lining plates 123 and 124 to move and be supported more stably.

[0095] Other configurations and effects of the second embodiment are the same as or similar to those of the first embodiment of the present invention described above, so detailed descriptions thereof are omitted here.

[0096] Next, a lining spring 300 according to a third embodiment of the present invention will be described. Fig. Figure 8 is a side view to illustrate a section of a lining spring 300 according to a third embodiment of the present invention.

[0097] The lining spring 300 according to a third embodiment of the present invention differs from the first and second embodiments in that a return 340 of a concave curved section in a lining spring includes a first projection 341 which is curved and extends outwards from an inner edge of side sections or parts 230b and 260b (e.g. in a direction towards the lining plates 123 and 124); a first curved section 342 which is curved towards an inner side of a concave curved section 330 from an end of the first projection 341; a second projection 343 which extends from the first curved section 342 to an inner edge of the concave curved section 330 (e.g.in a direction away from the paving slabs 123 and 124); a second curved section 344, which is curved in a direction towards the paving slabs 123 and 124 from one end of the second projection 343; a third projection 345, which extends from the second curved section 344 to the paving slabs 123 and 124; and a third curved section 346, which is curved in a direction towards the first curved section 342 from one end of the third projection 345.

[0098] Since the lining spring 300 is configured as described above according to the third embodiment of the present invention, the lining plates 123 and 124 can move forward during braking (e.g. towards the disc), and the third curved section 346 can contact the first curved section 342 through the lining plates 123 and 124 to deform the return element 340, and when the brake is released, the lining plates 123 and 124 can return more quickly and stably by means of an additional return force provided by the third curved section 346, which is separated from the first curved section 342 together with the return force of the first projection 341 in addition to the return force of the second projection 343 and the third projection 345.

[0099] Other configurations and effects of the third embodiment are the same as or similar to those of the first and second embodiments, so a detailed description thereof is omitted here, and the configuration of the lining spring 200 of the second embodiment can also be applied to the third embodiment.

[0100] Next, a lining spring 400 according to a fourth embodiment of the present invention will be described. Fig. Figure 9 is a perspective view to illustrate a lining spring 400 according to a fourth embodiment of the present invention.

[0101] The lining spring 400 according to a fourth embodiment of the present invention differs from the first to third embodiments in that the lining spring 400 comprises return springs 440 and 460 of concave curved sections 430 and 460, each comprising a pair of first projections 441 formed by being bent outwards from an inner edge of the side surfaces or parts 230b and 260b (e.g., in a direction towards the lining plates 123 and 124) and extending while being spaced apart from one another; and an end connector 442 connecting the ends of the pair of first projections 441. The end connector 442 can be bent outwards from the concave curved sections 430 and 460 or can be bent inwards towards the concave curved sections 430 and 460.

[0102] In the fourth embodiment, when the lining plates 123 and 124 move forward (e.g., towards the disc) during braking, they come into contact with the end connector 442, deforming the pair of first projections 441. When the brake is released, the lining plates 123 and 124 can return to their original position due to the restoring force of the pair of first projections 441. In the fourth embodiment, the two first projections 441 are paired to form the restorers 440 and 460, thus doubling the restoring force and allowing the lining plates 123 and 124 to quickly return to their original positions.

Claims

[1] Brake caliper, encompassing: a case (110); Pistons (121, 122) are arranged on opposite sides of the housing (110); inner and outer lining plates (123, 124) which are at least partially arranged in the housing (110) and are movably configured by the pistons (121, 122), each of the inner and outer lining plates (123, 124) having projections (123a, 124a) on opposite sides of each of the inner and outer lining plates (123, 124); inner and outer friction linings (125, 126) coupled to the inner and outer lining plates (123, 124) respectively; and a lining spring (200, 300, 400) comprising a plurality of guide supports (220, 250) configured to guide the movement of the inner and outer lining plates (123, 124), each of the guide supports (220, 250) comprising the following: a concave curved section (230, 260, 330, 430, 460) in which one of the projections (123a, 124a) of the inner and outer covering plates (123, 124) is arranged; and a return tab (240, 270, 340, 440) configured to elastically support one of the inner and outer lining plates (123, 124) such that one of the inner and outer lining plates (123, 124) returns to an original position in response to the movement of one of the inner and outer lining plates (123, 124) by the return tab (240, 270, 340, 440), wherein the concave curved section (230, 260, 330, 430, 460) of the lining spring comprises an upper part (230a, 260a), a side part (230b, 260b) which is bent downwards from the upper part (230a, 260a) of the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400), and a lower part (230c, 260c) which extends from the side part (230b, 260b) of the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400) to one of the inner and outer lining plates (123, 124) is bent, and wherein each of the guide supports (220, 250) further comprises a lateral support projection (246, 281) which is curved and extends from a lower section (245, 280) of one of the guide supports (220, 250) which is located below the concave curved section (230, 260, 330, 430, 460) in a direction away from one of the inner and outer covering plates (123, 124). [2] Brake caliper according to claim 1, wherein the housing (110) includes a recess (111) in which the concave curved section (230, 260, 330, 430, 460) of the pad spring (200, 300, 400) is arranged. [3] Brake caliper according to claim 1 or 2, further comprising an upper connector (210) connecting the upper section of the guide supports (220, 250) of the pad spring (200, 300, 400). [4] Brake caliper according to claims 1 to 3, further comprising a support projection (235) of the upper part (230a, 260a) which projects upwards from the upper part (230a, 260a) of the concave curved section (230, 260, 330, 430, 460) of the pad spring (200, 300, 400). [5] Brake caliper according to one of claims 1 to 4, wherein the return tab (240, 270, 340, 440) extends from the side part (230b, 260b) of the concave bent section (230, 260, 330, 430, 460) which is bent downwards from the upper part of the concave bent section (230, 260, 330, 430, 460) of the pad spring (200, 300, 400). [6] Brake caliper according to any one of claims 1 to 5, wherein: the housing (110) includes a recess (111) in which the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400) is arranged, and the side part (230b, 260b) of the concave curved section (230, 260, 330, 430, 460), which is bent downwards from the upper part (230a, 260a) of the concave curved section (230, 260, 330, 430, 460) of the lining spring (200, 300, 400), has a through hole (231, 261) and an inner support projection (232, 262) that extends from an edge of the through hole to the recess (111) of the housing (110). [7] Brake caliper according to claim 6, wherein: a stepped section (111a) is formed on a base of the recess (111) of the housing (110), and the inner support projection (232, 262), which extends from the edge of the through-hole of the side part (230b, 260b) of the concave curved section (230, 260, 330, 430, 460) to the recess (111) of the housing (110), is supported by the stepped section (111a) formed on the bottom of the recess (111) of the housing (110). [8] Brake caliper according to claim 7, wherein the inner support projection (232, 262) which extends from the edge of the through-hole of the side part (230b, 260b) of the concave curved section (230, 260, 330, 430, 460) to the recess (111) of the housing (110) has a curved section (232a, 262a) which is supported by the stepped section (111a) formed on the bottom of the recess (111) of the housing (110). [9] Brake caliper according to one of the preceding claims, wherein the return tab (240, 270) includes a curved section (242, 272) which is bent at one end of the return tab (240, 270) in a direction away from one of the inner and outer lining plates (123, 124). [10] Brake caliper according to one of the preceding claims, wherein at least one of the guide supports (220, 250) further comprises a lower curved section (247, 290) which is bent from a lower end of the at least one of the guide supports (220, 250) to one of the inner and outer lining plates (123, 124) in order to support a lower section of one of the inner and outer lining plates (123, 124). [11] Brake caliper according to one of the preceding claims, wherein a distance between an upper part (230a, 260a) and a lower part (230c, 260c) of the concave curved section (230, 260, 330, 430, 460) gradually increases in a direction away from one of the inner and outer lining plates (123, 124). [12] Brake caliper according to claim 11, wherein the thickness of one of the projections (123a, 124a) of the inner and outer lining plates (123, 124) gradually increases towards a distal end of one of the projections (123a, 124a) of the inner and outer lining plates (123, 124). [13] Brake caliper according to claim 12, wherein the housing (110) includes a recess (111) in which the concave curved section (230, 260, 330, 430, 460) of the pad spring (200, 300, 400) is arranged, and a distance between an upper surface (230a, 260a) and a lower surface of the recess (111) of the housing (110) gradually increases inwards. [14] Brake caliper according to any of the preceding claims, wherein the return tab (340) comprises: a first projection (341) which is curved and extends from the concave curved section (330) of the lining spring (300) to one of the inner and outer lining plates (123, 124); a first curved section (342) which is bent from the first projection (341) to an inside of the concave curved section (330) of the lining spring (300); a second projection (343) extending from the first curved section (342) in a direction away from one of the inner and outer covering plates (123, 124); a second curved section (344) which is curved from the second projection (343) to one of the inner and outer covering plates (123, 124); and a third projection (345) extending from the second curved section (344) to one of the inner and outer covering plates (123, 124). [15] Brake caliper according to claim 14, wherein the return tab (340) further comprises a third curved section (346) which is bent from an end of the third projection (345) to the first curved section (342) which is bent from the first projection (341) to the inside of the concave curved section (330) of the pad spring (300). [16] Brake caliper according to one of the preceding claims, wherein the return tab (440) includes a pair of projections (441) spaced apart from each other. [17] Brake caliper according to claim 16, wherein the return tab (440) further comprises an end connector (442) which connects the ends of the pair of projections (441) together. [18] Brake caliper according to claim 16 or 17, wherein the pair of projections (441) of the return tab (440) protrudes from the concave curved section (430, 460) of the pad spring (400).

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