Caliper brake

Abstract

A caliper brake may include a bracket fixedly mounted on a vehicle body and including a guide hole, a guide rod slidably inserted into the guide hole of the bracket, and a caliper housing coupled to the guide rod so as to be movable together with the guide rod relative to the bracket. An end portion of the guide rod may be fixedly coupled to a coupling hole formed at the caliper housing, and a guide hole is formed in a protruding portion of the bracket protruding toward an interior of the vehicle body.

Description

Technical Field

[0001] The present disclosure generally relates to a caliper brake. In particular, some embodiments of the present disclosure relate to a caliper brake with improved structural stability and operational reliability. Background Art

[0002] A brake system for performing braking must be installed in a vehicle, and various types of brake systems have been developed for the safety of a driver and passengers.

[0003] The conventional braking system mainly uses a hydraulic mechanism, which uses a mechanically connected booster to supply the hydraulic pressure required for braking to the wheel cylinder when the driver steps on the brake pedal.

[0004] Also, an electromechanical brake (EMB) system may perform braking of a vehicle by receiving a driver's braking intention as an electric signal and operating an electric device such as a motor based on the electric signal.

[0005] In such an EMB, since a motor for driving and an actuator for converting the rotational force of the motor into linear motion may be installed at or around the side of the wheel cylinder of the caliper housing, the weight of the brake assembly of the EMB may be heavier than that of a conventional hydraulic caliper brake, and the center of gravity of the EMB may be moved to the inside of the vehicle body. Therefore, a tilting phenomenon in which one side of the actuator droops may occur. Summary of the invention

[0006] An aspect of the present disclosure is to provide a caliper brake in which a contact surface between a guide rod and a guide hole is fixed to prevent a tilting phenomenon of a caliper housing.

[0007] Another aspect of the present disclosure is to provide a caliper brake having improved structural and operational stability.

[0008] Another aspect of the present disclosure is to provide a caliper brake having improved assemblability and mountability.

[0009] Yet another aspect of the present disclosure is to provide a caliper brake having improved performance and operational reliability.

[0010] Yet another aspect of the present disclosure is to provide a caliper brake that is easy to maintain.

[0011] According to one aspect of the present disclosure, a caliper brake includes: a bracket fixedly mounted on a vehicle body and including a guide hole; a guide rod slidably inserted into the guide hole; and a caliper housing connected to the guide rod to be arranged to move relative to the bracket, wherein an end portion of one side of the guide rod is arranged to be connected to a coupling hole provided in the caliper housing, and the guide hole is formed inside the bracket, and the bracket includes a protruding portion formed to extend and protrude to the inside of the vehicle body.

[0012] The bracket may further include: a main beam in which a knuckle hole connected to the vehicle body is formed; and a pair of guide beams disposed on both sides of the main beam, wherein the protruding portion may be formed to extend from each of the pair of guide beams and protrude into the interior of the vehicle body.

[0013] At least a portion of a contact area where an inner wall of the guide hole contacts an outer peripheral surface of the guide rod may be located further inside the vehicle body than an inner end portion of the main beam.

[0014] The caliper brake may further include a protection cover provided between an outer peripheral surface of the guide rod and an inner opening of the guide hole.

[0015] The guide hole may include a protective cover coupling portion to which the protective cover is fastened.

[0016] The protection cover may be provided to surround an outer peripheral surface of the guide rod, and the protection cover coupling portion may be formed to be recessed in an inner peripheral surface of the guide hole in a circumferential direction.

[0017] The protective cover coupling portion may include a coupling groove formed in an inner side surface in a circumferential direction, and the protective cover may include an outer protrusion formed to protrude from an outer circumferential surface of the protective cover, at least a portion of the outer protrusion being inserted into and fastened to the coupling groove.

[0018] The protection cover may further include a flange portion formed to protrude outward from an inner end portion of the protection cover in a circumferential direction to seal an inner opening of the protection cover coupling portion.

[0019] An inner diameter of at least a portion of an inner peripheral surface of the protective cover may be smaller than or equal to a diameter of the guide rod.

[0020] The protection cover may include at least one inner protrusion formed to protrude inwardly from an inner circumferential surface of the protection cover in a circumferential direction.

[0021] The guide hole may be formed through the bracket in the axial direction.

[0022] The caliper brake may further include a stopper member sealing an outer opening of the guide hole.

[0023] The guide rod may include a fastening portion inserted into the coupling hole, and the fastening portion and the coupling hole are thread-coupled.

[0024] The fastening portion may include a stopper formed to protrude outward from the fastening portion from an outer peripheral surface of the fastening portion so as to come into contact with an outer surface of the caliper housing.

[0025] The stopper may include a coupling surface at least a portion of which is provided as a flat surface to which a tool configured to rotate the guide rod is coupled.

[0026] According to another aspect of the present disclosure, a caliper brake includes: a bracket fixedly mounted on a vehicle body and including a guide hole formed to pass through the bracket in an axial direction; a guide rod slidably inserted into the guide hole; and a caliper housing connected to the guide rod to move relative to the bracket, wherein an inner opening of the guide hole is sealed by a protective cover interposed between an outer peripheral surface of the guide rod and an inner peripheral surface of the guide hole, and an outer opening of the guide hole is sealed by a stopper member.

[0027] An end portion of one side of the guide rod may be provided to be coupled to a coupling hole provided in the caliper housing, and the guide hole is formed inside a bracket including a protruding portion formed to extend and protrude to the inside of the vehicle body.

[0028] The bracket may include a main beam coupled to the vehicle body, and at least a portion of a contact area where an inner wall of the guide hole contacts an outer peripheral surface of the guide rod may be located further inside the vehicle body than an inner end portion of the main beam.

[0029] The guide hole may include a boot coupling portion formed to be recessed in an inner peripheral surface of the inner opening, and at least a portion of the boot may be inserted into and fastened to the boot coupling portion.

[0030] The protective cover connecting part may include a connecting groove formed to be recessed in the inner surface of the protective cover connecting part along the circumferential direction, and the protective cover may include an outer protrusion formed to protrude from the outer circumferential surface of the protective cover, wherein at least a portion of the outer protrusion is inserted into and fastened to the connecting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] These and / or other aspects of the present disclosure will become apparent and more easily understood through the following description of embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 is a perspective view showing a caliper brake according to an embodiment of the present disclosure;

[0033] Figure 2 is a side view showing a caliper brake according to an embodiment of the present disclosure;

[0034] Figure 3 is an exploded perspective view showing a caliper brake according to an embodiment of the present disclosure;

[0035] Figure 4 is a cross-sectional view showing a caliper brake according to an embodiment of the present disclosure;

[0036] Figure 5 is a perspective view showing a guide rod according to an embodiment of the present disclosure;

[0037] Figure 6 is a cross-sectional perspective view showing a protective cover according to an embodiment of the present disclosure; and

[0038] Figure 7 : is a front view showing the caliper brake according to the embodiment of the present disclosure in a state in which a tool fastening portion for coupling or detaching a guide rod is exposed to the outside of the caliper brake. DETAILED DESCRIPTION

[0039] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following embodiments provide the spirit of the present disclosure to those skilled in the art. The present disclosure is not limited to the embodiments disclosed herein and may be implemented in different forms. In the accompanying drawings, in order to clarify the present disclosure, parts not related to the description may be omitted, and the size of the components may be enlarged in order to facilitate understanding of the present disclosure.

[0040] Figure 1 is a perspective view showing a caliper brake according to an embodiment of the present disclosure. Figure 2 is a side view showing a caliper brake according to an embodiment of the present disclosure. Figure 3 is an exploded perspective view showing a caliper brake according to an embodiment of the present disclosure. Figure 4 is a cross-sectional view showing a caliper brake according to an embodiment of the present disclosure. Figure 5 is a perspective view showing a guide rod according to an embodiment of the present disclosure.

[0041] See also Figures 1 to 5 , the caliper brake according to the present embodiment may include a pair of pads 10, a bracket 100, a guide rod 400, a caliper housing 200, an actuator 300, and a protective cover 500. The pads 10 may be configured to press the two side surfaces of the disc, which is configured to rotate with the wheel. In the bracket 100, the pair of pads 10 are supported to be movable forward or backward, and a guide hole 110 is formed. The guide rod 400 is inserted into and slidably coupled to the guide hole 110. The caliper housing 200 is coupled to the guide rod 400 to slide to the bracket 100. The actuator 300 is configured to provide a driving force to press the pair of pads 10. The protective cover 500 is configured to seal between the outer peripheral surface of the guide rod 400 and the opening or end of the guide hole 110.

[0042] The disc rotates with the wheel, and at least a portion of one side of the outer circumference of the disc may be inserted or rotatably arranged inside a bracket 100 coupled to the vehicle body. The bracket 100 may be fixedly mounted to the vehicle body and support the pair of pads 10 so that the pair of pads 10 may move forward or backward. Figure 3 and Figure 4 , the bracket 100 may include a main beam 130, a pair of guide beams 135, and a protruding portion 140. The main beam 130 may have a knuckle hole 150 coupled to the vehicle body. The main beam 130 may be arranged in the form of a beam extending to be connected between the pair of knuckle holes 150. The pair of guide beams 135 may be provided at both sides of the main beam 130. The protruding portion 140 may protrude from each guide beam 135 toward the inside of the vehicle body.

[0043] The main beam 130 may be fixed to the vehicle body using a fastener such as, but not limited to, a mounting bolt fastened to the knuckle hole 150, and a sliding groove is formed on each of both sides of the main beam 130, and a protruding portion of each of the pads 10 inserted into the sliding groove may be formed in the guide beam 135. The protruding portion 140 may be formed at or in the inner end of the guide beam 135 to extend and protrude toward the inside of the vehicle body. When the protruding portion 140 extends and protrudes toward the inside of the vehicle body, a tilting phenomenon caused by a center of gravity shift during braking may be prevented, which will be described in detail below.

[0044] The guide hole 110 may be formed in the guide beam 135 along the axial direction of the disc to pass through the guide beam 135 and the protruding portion 140 of the bracket 100. A guide rod 400 (to be described below) may be slidably inserted into the guide hole 110, and due to the structure of the guide hole 110 and the guide rod 400, the caliper housing 200 may stably move linearly relative to the bracket 100.

[0045] The caliper housing 200 may further include a cylinder and an actuator 300. A pressing member such as a piston is provided in the cylinder of the caliper housing 200, the pressing member being configured to press at least one of the pads 10, and the actuator 300 configured to operate or move the pressing member may be supported by the caliper housing 200. The actuator 300 may include, for example but not limited to, one or more of a motor configured to provide a rotational driving force, a reduction gear unit configured to transmit the rotational driving force of the motor, and a pressing portion configured to convert the rotational driving force into a linear motion in response to the rotational driving force transmitted from the reduction gear unit to press the piston.

[0046] The caliper housing 200 may be coupled to the guide rod 400 or enable the guide rod 400 to slide relative to the bracket 100 , and the coupling hole 210 may be formed to be recessed in the caliper housing 200 in the axial direction of the disc or pass through the caliper housing 200 to be firmly coupled to the guide rod 400 .

[0047] The inner end portion of the guide rod 400 may be coupled to the caliper housing 200 to be slidably inserted into the guide hole 110. Alternatively, the bracket 100 and the caliper housing 200 may have a pair of guide holes 110 and a pair of guide rods 400 that are symmetrically disposed, respectively.

[0048] A fastening portion or a fixing portion (faster part) 420 may be provided or formed on an end portion of the guide rod 400 (e.g., an inner end portion of the guide rod 400 coupled to the caliper housing 200), and the fastening portion 420 may be directly coupled to a coupling hole 210 provided in the caliper housing 200. The fastening portion 420 and the coupling hole 210 may be spirally coupled so that the guide rod 400 and the caliper housing 200 may be securely coupled, but this is not required. To this end, a thread may be formed on an outer peripheral surface of the fastening portion 420 of the guide rod 400 and an inner peripheral surface of the coupling hole 210 of the caliper housing 200. Alternatively, the guide rod 400 and the caliper housing 200 may be coupled to each other by any coupling means (e.g., a press-fit coupling structure in which the fastening portion 420 is press-fitted into the coupling hole 210).

[0049] Meanwhile, the loads of the caliper housing 200 and the actuator 300 are supported by the contact area CA where the outer peripheral surface of the guide rod 400 may be in direct contact with the inner wall of the guide hole 110 .

[0050] Generally, the actuator 300 is mounted on or in the caliper housing 200 inside the vehicle body. Therefore, the center of gravity of the caliper housing 200 and the actuator 300 is biased toward the inside of the vehicle body, and thus, a tilting phenomenon occurs in which the connection portion between the caliper housing 200 and the actuator 300 hangs downward from the actuator 300. Since the tilting phenomenon may reduce the structural stability of the brake system and affect the brake performance and product durability, it is necessary to suppress or prevent the tilting phenomenon.

[0051] Therefore, in the caliper brake according to the present embodiment, the contact area CA can be extended to the interior of the vehicle body so that the center of gravity of the connecting part between the caliper housing 200 and the actuator 300 is located in the contact area CA to stably support the caliper housing 200 and the actuator 300 and suppress or prevent tilting caused by the shift of the center of gravity.

[0052] Specifically, at least a portion of the contact area CA where the inner wall of the guide hole 110 contacts the outer peripheral surface of the guide rod 400 may be formed or arranged to be located further inside the vehicle body than the inner end of the main beam 130. Therefore, since the center of gravity of the connection portion between the caliper housing 200 and the actuator 300 is located in the contact area CA, structural stability may be improved or achieved. To this end, as described above, the protruding portion 140 formed with the guide hole 110 may protrude from the inner end of the guide beam 135 and extend to the inside of the vehicle body.

[0053] Will refer to Figure 5 The guide rod 400 is described in more detail.

[0054] The guide rod 400 includes a rod body 410 which is inserted into the guide hole 110 and is configured to be slidable in the guide hole 110. The rod body 410 may be formed in a rod shape having a predetermined length. The fastening portion 420 is provided at or in an end portion of one side of the guide rod 400 to be inserted into the coupling hole 210 and fixedly coupled to the coupling hole 210. As described above, since a thread may be provided on the outer peripheral surface of the fastening portion 420, the fastening portion 420 may be threadedly coupled to the coupling hole 210. The stopper 430 formed to protrude outward from the outer peripheral surface of the guide rod 400 (e.g., the outer peripheral surface of the fastening portion 420) may be provided to contact the outer surface of the outer peripheral portion of the caliper housing 200 where the coupling hole 210 is formed. The stopper 430 may be disposed on a portion outside the fastening portion 420 of the rod body 410 to contact the outer surface of the caliper housing 200 when the fastening portion 420 is threadedly connected to the connecting hole 210 of the caliper housing 200, thereby limiting the fastening stroke to prevent damage to components due to excessive tightening between the guide rod 400 and the connecting hole 210 and to improve assembly quality.

[0055] The coupling surface 435 may be provided on the outer peripheral surface of the stopper 430. At least a portion of the coupling surface 435 may have a flat surface to be coupled to a tool for rotating the guide rod 400. Also, the coupling surface 435 may be at different angles to the outer peripheral surface of the stopper 430. Since a tool (e.g., a wrench) for rotating the guide rod 400 may contact and be supported by the coupling surface 435, when the tool can rotate the guide rod 400, the coupling surface 435 may improve the assemblability of the guide rod 400 and may make maintenance easy. Additionally or alternatively, a tool fastening portion or structure 440 may be provided at or in the end of the other side of the guide rod 400, and a tool configured to rotate the guide rod 400 may be coupled to the tool fastening portion or structure 440.

[0056] Figure 6 is a perspective cross-sectional view showing a protective cover according to an embodiment of the present disclosure.

[0057] Reference Figures 1 to 6 , the protective cover 500 may be provided between the guide rod 400 and the guide hole 110. The protective cover 500 may be configured to seal between the outer peripheral surface of the guide rod 400 and the inner peripheral surface of the guide hole 110. For example, the protective cover 500 may be provided in a cylindrical shape having a hollow portion passing therethrough in the axial direction of the disk, and inserted between the outer peripheral surface of the guide rod 400 and the inner opening of the guide hole 110 to seal the inner opening of the guide hole 110. Therefore, foreign matter or moisture may be prevented from entering or flowing in through the inner opening of the guide hole 110, and the lubricant filling the guide hole 110 may be prevented from leaking to the outside of the guide hole 110.

[0058] The protective cover 500 may be provided to surround or cover the outer peripheral surface of the guide rod 400, and be fastened to the guide hole 110 and supported in the guide hole 110. To this end, the guide hole 110 may include a protective cover coupling portion 120 recessed from the inner peripheral surface of the guide hole 110 in the circumferential direction. The protective cover coupling portion 120 is formed at a portion of the inner peripheral surface of the guide hole 110, and at least a portion of the protective cover 500 is inserted and installed at the portion. As an example, the protective cover coupling portion 120 may be provided so that the inner diameter of the inner opening side of the guide hole 110 into which the guide rod 400 is inserted is greater than the inner diameter of the inner peripheral surface of the guide hole 110. Therefore, during the installation process of the protective cover 500, first, the protective cover 500 may be installed to surround the outer peripheral surface of the guide rod 400, and then the guide rod 400 and the protective cover 500 may be inserted and installed in the guide hole 110.

[0059] The protective cover coupling portion 120 may further include a coupling groove 125 recessed from the inner side surface of the protective cover coupling portion 120 in the circumferential direction to more stably support the protective cover 500. In addition, the outer protrusion 510 protrudes from the outer peripheral surface of the protective cover 500 in the circumferential direction, and when at least a portion of the outer protrusion 510 of the protective cover 500 is inserted and fastened to the coupling groove 125 of the bracket 100, the protective cover 500 can be fastened to the guide hole 110 and supported in the guide hole 110.

[0060] The flange portion 520 may be configured to seal the inner opening of the protective cover coupling portion 120 and may be provided at or on the inner end of the protective cover 500. The flange portion 520 may be formed to protrude outward from the outer peripheral surface of the inner end of the protective cover 500 in the circumferential direction, and since the flange portion 520 may be in close contact with a portion around the inner opening of the protective cover coupling portion 120 on the outer surface of the bracket 100, entry or inflow of foreign matter may be more effectively suppressed or prevented.

[0061] The inner diameter of at least a portion of the inner circumferential surface of the protective cover 500 may be smaller than or equal to the inner diameter of the guide rod 400. Specifically, the inner diameters of the front end portion 530 and the rear end portion 540 of the protective cover 500 in the insertion direction of the guide rod 400 may be smaller than or equal to the diameter of the guide rod 400. Therefore, when the guide rod 400 passes through and is coupled to the front end portion 530 and the rear end portion 540, the shapes of the front end portion 530 and the rear end portion 540 are deformed so that the inner circumferential surfaces of the front end portion 530 and the rear end portion 540 can be in close contact with the outer circumferential surface of the guide rod 400 to prevent foreign matter from entering or flowing between the guide rod 400 and the protective cover 500.

[0062] Meanwhile, the inner diameter of the inner peripheral surface of the portion of the protective cover 500 located between the front end portion 530 and the rear end portion 540 may be greater than the outer diameter of the guide rod 400. Therefore, the lubricant injected into the guide hole 110 may be contained in the space formed between the inner peripheral surface of the protective cover 500 and the outer peripheral surface of the guide rod 400. When the lubricant is applied to the space between the inner peripheral surface of the protective cover 500 and the outer peripheral surface of the guide rod 400, the friction between the protective cover 500 and the guide rod 400 may be reduced, and the generation of noise or vibration may be suppressed during the sliding movement of the guide rod 400. In addition, damage to the protective cover 500 due to friction may be prevented.

[0063] The protective cover 500 includes one or more inner protrusions 550 protruding inwardly from the inner peripheral surface of the protective cover 500 in the circumferential direction. The inner protrusion 550 may be provided as a single protrusion 550 or a plurality of inner protrusions 550 on the inner peripheral surface of the protective cover 500. The inner diameter of the inner protrusion 550 may be less than or equal to the outer diameter of the guide rod 400, and greater than the inner diameter of each of the front end portion 530 and the rear end portion 540. Therefore, the inner protrusion 550 of the protective cover 500 contacts the outer surface of the guide rod 400 to prevent foreign matter from entering or flowing in, and allows the protective cover 500 to be easily mounted on the guide rod 400.

[0064] The stopper member 600 is configured to close and seal the outer opening of the guide hole 110 (e.g., the outer end of the guide hole 110). The stopper member 600 may include an insertion portion having an outer diameter equal to or greater than an inner diameter of the outer opening of the guide hole 110, so that the insertion portion of the stopper member 600 can be inserted into and seal the guide hole 110. Therefore, foreign matter or moisture can be prevented from entering or flowing in through the outer opening of the guide hole 110, and the lubricant filling the inner space of the guide hole 110 can be prevented from leaking to the outside of the guide hole 110. As described above, the inner opening or end of the guide hole 110 can be sealed by the protective cover 500, and the outer opening or end of the guide hole 110 can be sealed by the stopper member 600 to prevent the reduction of durability due to the inflow or entry of foreign matter or the leakage of lubricant, and to achieve operational stability.

[0065] Figure 7 : is a front view showing the caliper brake according to the embodiment of the present disclosure in a state where a tool fastening portion for coupling or detaching a guide rod is exposed to the outside of the caliper brake.

[0066] Hereinafter, a method of manufacturing or assembling the caliper brake according to the present embodiment will be described. First, a method of mounting the caliper brake according to the present embodiment will be described.

[0067] A bracket 100 installed to allow a pair of backing plates 10 to move forward or backward is fixed to a vehicle (eg, a vehicle body) so that a portion of an outer peripheral surface of the disc is rotatably positioned between the pair of backing plates 10 .

[0068] When the bracket 100 is fixed to the vehicle, the end of the other side of the guide rod 400 provided with the fastening portion 420 is inserted into the end of one side of the guide hole 110 of the bracket 100. When the guide rod 400 is inserted into the guide hole 110, the caliper housing 200 is positioned so that the fastening portion 420 of the guide rod 400 faces the coupling hole 210 of the caliper housing 200. When the caliper housing 200 is positioned so that the fastening portion 420 faces the coupling hole 210 of the caliper housing 200, the finger portion of the caliper housing 200 is arranged outside the outer pad 10, and the cylinder of the caliper housing 200 is arranged outside the inner pad 10.

[0069] When the caliper housing 200 is positioned, the fastening portion 420 is directly inserted into or coupled to the coupling hole 210 of the caliper housing 200. The fastening portion 420 may be threadedly coupled to the coupling hole 210, and to this end, the guide rod 400 may be rotated to couple the threads of the outer peripheral surface of the fastening portion 420 and the threads of the inner peripheral surface of the coupling hole 210. The tool fastening portion 440 may be used to couple the fastening portion 420 to the coupling hole 210. To this end, first, a tool is installed using an outer opening of the guide hole 110 formed to pass through the bracket 100. Since the guide hole 110 is formed to pass through the bracket 100, the tool fastening portion 440 provided on the end of the guide rod 400 is exposed to the outside of the bracket 100 through the outer opening, which is the opposite side of the inner opening into which the guide rod 400 is inserted. In Figure 7 , the shape of the tool fastening portion 440 exposed to the outside of the bracket 100 as described above is shown.

[0070] The tool inserted through the outer opening is coupled to the tool fastening portion 440 of the guide rod 400. As an example, the tool fastening portion 440 has a slotted flat surface and may have a straight groove, and a flat head screwdriver may be inserted through the through hole to be coupled to the straight groove. Then, the inserted tool is rotated to screw the fastening portion 420 to the coupling hole 210. When the tool coupled to the tool fastening portion 440 rotates, the guide rod 400 also rotates with the tool fastening portion 440, and the threads of the outer peripheral surface of the fastening portion 420 may be coupled to the threads of the inner peripheral surface of the coupling hole 210 by the rotation of the guide rod 400. When the fastening portion 420 is coupled to the coupling hole 210, the operator may rotate the tool until the stopper 430 of the fastening portion 420 contacts the caliper housing 200 to generate a certain torque. After the fastening portion 420 is coupled to the coupling hole 210 , the stopper member 600 may be coupled to the through hole of the opened guide hole 110 to seal the outer opening, and thus foreign matter may be prevented from flowing into the guide hole 110 from the outside of the guide hole 110 .

[0071] Meanwhile, in the present embodiment, the coupling surface 435 may also be used to couple the fastening portion 420 to the coupling hole 210. To this end, a tool is coupled to the coupling surface 435 provided on at least a portion of the outer peripheral surface of the stopper 430 protruding outward from the outer peripheral surface of the guide rod 400 so as to contact the surface of the caliper housing 200 formed with the coupling hole 210. The coupling surface 435 may be provided as at least one pair of flat surfaces facing each other. As described above, a tool such as a wrench may be coupled to the coupling surface 435 provided as at least one pair of flat surfaces facing each other.

[0072] Then, the coupled tool is rotated to screw the fastening portion 420 to the coupling hole 210. When the tool coupled to the coupling surface 435 is rotated, the guide rod 400 is also rotated together with the coupling surface 435, and the threads of the outer peripheral surface of the fastening portion 420 can be coupled to the threads of the inner peripheral surface of the coupling hole 210 by the rotation of the guide rod 400. The operator can rotate the tool until the stopper 430 of the fastening portion 420 contacts the surface of the caliper housing 200 to generate a certain torque when the fastening portion 420 is coupled to the coupling hole 210.

[0073] Hereinafter, a method of removing or disassembling the caliper brake for maintenance according to the present embodiment will be described.

[0074] The method of removing or disassembling the caliper brake may be performed in the reverse order of the method of installing the caliper brake described above.

[0075] When the caliper brake is removed or disassembled, only the caliper housing 200 can be separated for operations such as replacing the backing plate 10. In order to separate the caliper housing 200, the fastening portion 420 is separated from the coupling hole 210 of the caliper housing 200, and the caliper housing 200 is removed. In this case, in order to separate the fastening portion 420 from the coupling hole 210, the tool fastening portion 440 can be used as when the fastening portion 420 is coupled to the coupling hole 210. To this end, first, the stopper member 600 coupled to the outer opening formed to pass through the guide hole 110 of the bracket 100 is separated. When the stopper member 600 is separated to open the outer opening, the tool fastening portion 440 of the guide rod 400 inserted into the guide hole 110 is exposed to the outside.

[0076] After the stopper member 600 is separated or removed from the bracket 100, a tool is inserted through the outer opening of the guide hole 110. The tool inserted through the outer opening of the guide hole 110 is coupled to the tool fastening portion 440 of the guide rod 400, and rotated to separate or remove the fastening portion 420 threadedly coupled to the coupling hole 210 from the guide hole 110 of the bracket 100.

[0077] In addition, the coupling surface 435 can also be used to remove or separate the fastening portion 420 from the coupling hole 210. To this end, a tool is coupled to the coupling surface 435, which is provided on at least a portion of the outer peripheral surface of the stopper 430 protruding outward from the outer peripheral surface of the guide rod 400 so as to contact the surface of the caliper housing 200 formed with the coupling hole 210. As described above, the coupling surface 435 can be provided as at least one pair of flat surfaces facing each other, and the coupling surface 435 can be coupled to a tool such as a wrench. Then, the coupled tool is rotated to separate the fastening portion 420 threadedly coupled to the coupling hole 210.

[0078] In the caliper brake according to the present embodiment, the inclination phenomenon of the caliper housing can be prevented by fixing the contact surface between the guide rod and the guide hole.

[0079] According to the present embodiment, the structural stability and operational stability of the caliper brake can be improved.

[0080] According to the present embodiment, the assemblability and mountability of the caliper brake can be improved.

[0081] According to the present embodiment, the performance and operational reliability of the caliper brake can be improved.

[0082] According to the present embodiment, the caliper brake can be easily maintained.

Claims

1. A caliper brake, comprising: a bracket, the bracket comprising a guide hole; a guide rod, the guide rod being slidably inserted into the guide hole of the bracket; as well as a caliper housing fixed to the guide rod so as to be movable together with the guide rod relative to the bracket, wherein an end of the guide rod is fixedly coupled to a coupling hole formed at the caliper housing, and The guide hole is formed in a protruding portion of the bracket that protrudes toward a vehicle body.

2. The caliper brake according to claim 1, wherein: The bracket also includes: a main beam having a knuckle hole to be coupled to the vehicle body; and a pair of guide beams, the pair of guide beams being arranged on both sides of the main beam, wherein the protruding portion of the bracket is formed to extend and protrude from each of the pair of guide beams toward the vehicle body.

3. The caliper brake according to claim 2, wherein: At least a portion of a region of the inner wall of the guide hole with which the outer peripheral surface of the guide rod can contact by the sliding movement of the guide rod is located further inside the vehicle body than an inner end portion of the main beam. 4 . The caliper brake according to claim 1 , further comprising a protection cover provided between an outer peripheral surface of the guide rod fixed to the caliper housing and an inner surface of the guide hole of the bracket.

5. The caliper brake according to claim 4, wherein: The guide hole of the bracket has a protective cover coupling portion to which the protective cover is coupled.

6. The caliper brake according to claim 5, wherein: The protective cover covers at least a portion of an outer peripheral surface of the guide rod; and The protective cover coupling portion is formed to be recessed from an inner peripheral surface of the guide hole of the bracket.

7. The caliper brake according to claim 6, wherein: The protective cover includes an outer protrusion protruding from an outer peripheral surface of the protective cover, wherein at least a portion of the outer protrusion of the protective cover is inserted into a coupling groove formed on an inner surface of the protective cover coupling portion of the guide hole of the bracket.

8. The caliper brake according to claim 7, wherein: The protection cover further includes a flange portion protruding outward from an end portion of the protection cover to seal an opening of the protection cover coupling portion of the guide hole of the bracket.

9. The caliper brake according to claim 6, wherein: An inner diameter of at least a portion of an inner peripheral surface of the protection cover is smaller than or equal to an outer diameter of the guide rod.

10. The caliper brake according to claim 6, wherein: The protection cover includes at least one inner protrusion protruding inwardly from an inner peripheral surface of the protection cover.

11. The caliper brake according to claim 1, wherein: The guide hole is formed through the bracket in the axial direction of the caliper brake. 12 . The caliper brake according to claim 11 , further comprising a stopper member covering an opening of the guide hole, the opening of the guide hole being formed to be opposite to another opening of the guide hole into which the guide rod is inserted.

13. The caliper brake according to claim 11, wherein: The guide rod includes a threaded portion inserted into the coupling hole of the caliper housing; and The threaded portion of the guide rod and the coupling hole of the caliper housing are threadably coupled to each other.

14. The caliper brake according to claim 13, wherein: The guide rod includes a stopper that protrudes outward from an outer peripheral surface of the guide rod such that the stopper of the guide rod is disposed to contact an outer surface of the caliper housing.

15. The caliper brake according to claim 14, wherein: A flat surface is formed on at least a portion of an outer peripheral surface of the stopper so that a tool configured to rotate the guide rod is coupled to the flat surface of the stopper.

16. A caliper brake, comprising: a bracket including a guide hole passing through at least a portion of the bracket in an axial direction of the caliper brake; a guide rod, the guide rod being slidably inserted into the guide hole of the bracket; a caliper housing fixed to the guide rod so as to be movable relative to the bracket together with the guide rod; a protective cover coupled to one opening of the guide hole of the bracket and disposed between an outer peripheral surface of the guide rod and an inner peripheral surface of the guide hole of the bracket; as well as A stopper member covers the other opening of the guide hole of the bracket.

17. The caliper brake according to claim 16, wherein: An end portion of the guide rod is fixedly coupled to a coupling hole of the caliper housing; and The guide hole is formed in a protruding portion of the bracket that protrudes toward an inner portion of a vehicle body.

18. The caliper brake according to claim 17, wherein: The bracket includes a main beam coupled to the vehicle body; and At least a portion of a region of the inner wall of the guide hole with which the outer peripheral surface of the guide rod can contact by the sliding movement of the guide rod is located further inside the vehicle body than an inner end portion of the main beam.

19. The caliper brake according to claim 17, wherein: At least a portion of the protection cover is inserted into a protection cover coupling portion recessed from an inner peripheral surface of the guide hole.

20. The caliper brake according to claim 19, wherein: The protective cover includes an outer protrusion protruding from an outer peripheral surface of the protective cover, wherein at least a portion of the outer protrusion of the protective cover is inserted into a coupling groove formed on an inner surface of the protective cover coupling portion of the guide hole of the bracket.

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