Braek pedal apparatus and vehicle having the same

Abstract

The disclosed embodiment relates to a brake pedal device and a vehicle equipped with the same, wherein a pedal part (200) operated by a driver and a brake master cylinder (300) that generates brake hydraulic pressure are provided together in a single case (100), the direction of operation of the pedal part (200) and the direction of installation of the brake master cylinder (300) are the same in the front-rear direction, and the pedal part (200) is configured to be an organ-type pedal, so that the external size of the brake pedal device can be configured to a compact size and can be effectively applied to small vehicles.

Description

Technology Field

[0001] The disclosed embodiment relates to a brake pedal device and a vehicle equipped with the same, and more specifically, to a brake pedal device in which a pedal part operated by a driver and a brake master cylinder that generates brake hydraulic pressure are provided together in a single case, and to a vehicle equipped with the same. Background Technology

[0002] The vehicle may be equipped with a brake pedal operated by the driver for braking.

[0003] Brake pedals are classified into pendant type and organ type depending on the mounting structure.

[0004] In the pendant type, the center of rotation of the pedal pad is located at the top, allowing the driver to operate it by pressing or pushing it forward, while in the organ type, the center of rotation of the pedal pad is located at the bottom, allowing the driver to operate it by rotating the pedal pad forward.

[0005] In the case of a mechanical braking system, the driver's pedal pad operation force is transmitted to the brake master cylinder to generate brake hydraulic pressure, and the generated brake hydraulic pressure is transmitted to the braking devices on the front and rear wheels to generate braking force on the front and rear wheels.

[0006] In general, small vehicles (small electric vehicles) that are small in size and have limited interior space may find it difficult to individually secure mounting space for the brake pedal device and the brake master cylinder.

[0007] Therefore, it is necessary to develop a new type of brake pedal device that can be effectively applied to small vehicles.

[0008] The matters described as background technology above are intended only to enhance understanding of the background of the disclosed embodiments and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. The problem to be solved

[0009] The disclosed embodiment is a brake pedal device in which a pedal part operated by a driver and a brake master cylinder that generates brake hydraulic pressure are provided together in a single case, and the external size can be configured in a compact size and effectively applied to small vehicles, thereby aiming to improve productivity and marketability. means of solving the problem

[0010] A brake pedal device according to a disclosed embodiment for achieving the above-mentioned purpose is characterized by comprising: a case fixedly installed on a vehicle panel; a pedal portion rotatably installed on the case and operated by a driver; and a brake master cylinder fixedly installed within the case, which operates by transmitting operating force through the pedal portion and generates brake hydraulic pressure upon operation.

[0011] It is characterized by further including a power transmission unit located within the above-mentioned case and arranged in the front-rear direction, which connects the pedal unit and the brake master cylinder to transmit the driver's pedal operation force to the brake master cylinder.

[0012] The above pedal part is characterized as an organ-type pedal that operates by rotating back and forth relative to the case, centering on the other end hinged to the case, when the driver steps on the end protruding upward from the case with their foot.

[0013] The above pedal portion is characterized by comprising: a pedal pad operated by a driver; a hinge bracket fixed within the case; and a pedal arm installed through the upper surface of the case, one end of which is coupled to the pedal pad from the outside of the case, and the other end of which is rotatably coupled to the hinge bracket.

[0014] The first nipple and the second nipple connected to the brake oil reservoir tank in the above brake master cylinder are characterized by being provided to penetrate the upper surface of the case and be exposed to the outside.

[0015] The first port and the second port connected to the front wheel braking device and the rear wheel braking device in the above brake master cylinder are characterized by being provided to be exposed to the outside by penetrating one side of the case.

[0016] The power transmission unit is characterized by comprising: a rotary link having one end rotatably coupled to the pedal unit at a position above the rotational center of the pedal unit and the other end extended forward; a pedal rod rotatably coupled to the other end of the rotary link, extending forward, and having a first rack gear at its front end; a master cylinder rod arranged parallel to the pedal rod, having one end connected to a brake master cylinder and the other end equipped with a second rack gear; and a pinion gear that meshes simultaneously with the first rack gear and the second rack gear between the pedal rod and the master cylinder rod.

[0017] One end of the rotary link coupled to the above-mentioned pedal part is positioned relatively higher than the other end of the rotary link coupled to the pedal rod, so the rotary link is installed in a diagonal direction.

[0018] One side of the interior of the above case is provided with a guide groove that is formed with an arc-shaped cross-section and extends in the front-rear direction; and a master cylinder rod is inserted into the guide groove, and the movement of the master cylinder rod in the front-rear direction is guided by the guide groove.

[0019] The above pedal part is characterized by the fact that when the front surface of the pedal part contacts a case hole formed in the case when the pedal part rotates forward relative to the case by the driver's operation, the operation stroke of the pedal part is restricted.

[0020] It is characterized by further including: a spring seat located within the case and coupled to the pedal part; a spring block located within the case and fixed to the case; and a return spring installed with both ends supported by the spring seat and the spring block, which returns the pedal part by spring force.

[0021] The above pedal rod is characterized by being installed to be movable back and forth through a spring block.

[0022] The outer surface of the pedal rod exposed toward the front through the spring block is provided with a protruding rod projection; and when the pedal part returns to the front of the spring block by the spring force of the return spring, the return stroke of the pedal part is restricted when the rod projection contacts the front of the spring block.

[0023] The invention is further characterized by including: a brake light switch fixedly coupled to the above case; a stopper bracket provided to be connected to the above pedal part; and a stopper fixedly provided to the above stopper bracket, which contacts the brake light switch when the driver does not operate the pedal part, and separates from the brake light switch when the driver operates the pedal part.

[0024] The above pedal rod and master cylinder rod are spaced apart to the left and right; and the above pedal rod and master cylinder rod are connected to move in opposite directions relative to the vehicle's front-rear direction.

[0025] The master cylinder rod moves linearly backward by the rotation of the pinion gear when the above pedal rod moves forward; and the master cylinder rod moves linearly forward by the rotation of the pinion gear when the above pedal rod moves backward.

[0026] A vehicle according to the disclosed embodiment is characterized by comprising: a case installed in a vehicle panel portion, a pedal portion and a brake master cylinder installed together in the case, wherein the operating direction of the pedal portion and the installation direction of the brake master cylinder are the same in the front-rear direction; and a braking device located on a wheel of the vehicle and generating braking force when the brake pedal device is operated. Effects of the invention

[0027] The brake pedal device according to the disclosed embodiment is configured such that a pedal part operated by a driver and a brake master cylinder that generates brake hydraulic pressure are provided together in a single case, allowing the external size of the brake pedal device to be configured in a compact size and effectively applicable to small vehicles, thereby enabling improved productivity and marketability.

[0028] In addition, the disclosed embodiment has a configuration in which the operating direction of the pedal part and the installation direction of the brake master cylinder are the same in the front-rear direction, and through this, the width of the brake pedal device in the left-right direction can be reduced, thereby having the effect of being effectively applicable to small vehicles with limited interior space in the left-right direction.

[0029] In addition, the disclosed embodiment is configured such that the pedal part is an organ-type pedal, which has an advantageous effect for pedal operation when applied to a small vehicle with a high seating position in the driver's seat.

[0030] The effects obtainable from the disclosed embodiments are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the disclosed embodiments belong from the description below. Brief explanation of the drawing

[0031] FIGS. 1 and 2 are perspective views of the combined state of a brake pedal device according to a disclosed embodiment, Fig. 3 is an exploded view of Fig. 2, FIGS. 4 to 7 are drawings for explaining cases of disclosed embodiments, FIGS. 8 to 10 are drawings of the assembly process of a brake pedal device, FIGS. 11 to 13 are drawings of the state before the driver operates the pedal part. FIGS. 14 to 16 are drawings of the state in which the driver operates the pedal part. Specific details for implementing the invention

[0032] In describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the embodiments disclosed in this specification. Furthermore, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of this disclosure. The disclosure below is not intended to limit this disclosure to the described form or specific field, and it is considered that various alternative modes and modifications to this disclosure are possible, whether explicitly stated or implied in this specification. Those skilled in the art will recognize that the form and details of this disclosure may change.

[0033] The present disclosure is described with reference to specific embodiments. However, as understood by those skilled in the art to which the present disclosure pertains, the various embodiments disclosed herein may be modified or otherwise implemented in various other ways without departing from the spirit and scope of the present disclosure. Accordingly, the following description should be considered illustrative and is intended to teach those skilled in the art to the manner in which various embodiments are made and used. It will be understood that the forms of the disclosure shown and described herein are to be taken as representative embodiments. Equivalent elements, or materials, processes, or steps may be substituted for those representatively exemplified and described in the present disclosure. Expressions used in describing the present disclosure, such as "including," "comprising," "incorporating," "consisting of," "have," "is," etc., should be interpreted as allowing items, components, or elements not explicitly described to be indicated in a non-exclusive manner, i.e., to be indicated. In addition, references to the singular should be interpreted as including those related to the plural.

[0034] Furthermore, the various embodiments disclosed herein should be accepted as illustrative and descriptive and should not be interpreted as limiting the content of the disclosure. All references to joining (e.g., attached, affixed, coupled, connected, etc.) are used solely to aid in understanding the disclosure and are not intended to limit the location, orientation, or use of the configuration or the methods disclosed herein. Accordingly, where joining references exist, they should be interpreted broadly. Moreover, in such joining references, it is not assumed that two or more elements are directly connected to each other. Additionally, all numeric terms, e.g., "first," "second," "third," "primary," "secondary," "major," or any other general or numeric terms, are to be taken solely as identifiers to aid in understanding the various components, forms, variations, or modifications of the present disclosure and are not to imply any limitation to any component, form, variation, or modification, or to any order or preference thereof. That is, while such expressions may be used to describe various components, the components are not limited by such expressions. Such expressions are used solely for the purpose of distinguishing one component from another.

[0035] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification, and do not inherently possess distinct meanings or roles.

[0036] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0037] Furthermore, the terms "Unit" or "Control Unit" included in the name are merely terms widely used to name controllers that control specific vehicle functions, and do not refer to generic function units.

[0038] A controller may include a communication device that communicates with other controllers or sensors to control the function it is responsible for, a memory that stores an operating system, logic instructions, and input / output information, and one or more processors that perform judgments, calculations, decisions, etc., necessary for controlling the function it is responsible for.

[0039] Any number of components or various components in any configuration described herein may be included within the disclosure described herein. Components may include any combination of features described herein and may be arranged in any configuration among the various configurations described herein. Concepts regarding the structure and arrangement of the components of the disclosure, as well as their use and operation, may be applied to any number of embodiments in any combination, as well as to specific embodiments discussed herein. Embodiments including those having various features of various arrangements are described below with reference to the drawings.

[0040] Hereinafter, various embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0041] A brake pedal device according to a disclosed embodiment may include: a case (100) fixedly installed on a vehicle panel part (10) as shown in FIGS. 1 to 16; a pedal part (200) rotatably installed in the case (100) and operated by a driver; a brake master cylinder (300) fixedly installed within the case (100), which operates by transmitting operating force through the pedal part (200) and generates brake hydraulic pressure when operated; and a power transmission part (400) located within the case (100) and arranged in the front-rear direction, which connects the pedal part (200) and the brake master cylinder (300) to transmit the operating force of the driver's pedal part (200) to the brake master cylinder (300).

[0042] The brake pedal device according to the disclosed embodiment is configured such that a pedal part (200) operated by a driver and a brake master cylinder (300) that generates brake hydraulic pressure are provided together in a single case (100). This allows the external size of the brake pedal device to be configured in a compact size, thereby providing the advantage of being effectively applicable to small vehicles.

[0043] The case (100) may be composed of a first case (110) on the left and a second case (120) on the right, and the first case (110) and the second case (120) may be assembled via a plurality of first pins (130).

[0044] The case (100) is fixedly installed on the panel section (10) of the vehicle, for example, the panel section (10) can be a floor panel and can be installed in the interior space of the vehicle where the driver's seat is located.

[0045] According to the disclosed embodiment, the operating direction (rotational direction) of the pedal unit (200) and the installation direction of the brake master cylinder (300) are configured to be the same in the front-rear direction, and through this, the size of the left-right width (D1) of the brake pedal device can be reduced, so there is an advantage that it can be effectively applied to small vehicles with limited interior space in the left-right direction.

[0046] The pedal part (200) can be an organ-type pedal that operates by rotating back and forth relative to the case (100) around the other end (bottom) which is hinged to the case (100) when the driver steps on the upper end (top) protruding from the top of the case (100) with their foot.

[0047] The organ-type pedal has the advantage of good operability because the movement of the pedal part (200) and the trajectory of the driver's foot are similar, and it is particularly advantageous to operate compared to the pendant-type pedal when the seating position of the driver's seat is high.

[0048] The pedal unit (200) may include a pedal pad (210) operated by a driver stepping on it with their foot; a hinge bracket (220) fixed inside the case (100); and a pedal arm (230) installed through the upper surface of the case (100), with one end connected to the pedal pad (210) outside the case (100) and the other end rotatably connected to the hinge bracket (220).

[0049] A hinge bracket (220) is installed in the internal space of the case (100) so as to be fixed at the rear lower end via a plurality of second pins (240), and the other end (lower end) of the pedal arm (230) is connected to the hinge bracket (220) via a third pin (250), and is connected so as to be rotatable in the front and rear directions around the third pin (250).

[0050] The pedal arm (230) penetrates the upper surface of the case (100) and protrudes to the outside of the case (100), and one end (upper end) of the pedal arm (230) protruding to the outside of the case (100) is connected to the pedal pad (210) via the fourth pin (260).

[0051] A case hole (140) that allows a pedal arm (230) to pass through the upper surface of the case (100) and to allow rotation of the pedal arm (230) in the forward and backward directions may be formed to extend in the forward and backward directions.

[0052] The first nipple (310) and the second nipple (320) connected to the brake oil reservoir tank (20) in the brake master cylinder (300) can be exposed to the outside by penetrating the upper surface of the case (100).

[0053] The first nipple (310) and the second nipple (320) are provided with the same directionality in the brake master cylinder (300) and are structured to penetrate the upper surface of the case (100) together, thereby contributing to the realization of a compact size of the brake pedal device.

[0054] A reservoir hose is connected to each of the first nipple (310) and the second nipple (320) so that they can be connected to the brake oil reservoir tank (20) through the reservoir hose.

[0055] Additionally, the first port (330) and the second port (340), which are connected to the front wheel braking device (30) and the rear wheel braking device (40) in the brake master cylinder (300), may be provided to be exposed to the outside by penetrating one side of the case (100).

[0056] The braking device may be located on the wheels of the vehicle and may include a brake caliper for a disc brake and a wheel cylinder for a drum brake.

[0057] In the case of a small three-wheeled vehicle, the first port (330) can be connected to the front wheel, and the second port (340) can be connected to the rear wheel.

[0058] In the case of a four-wheel vehicle, the first port (330) is connected to the front left wheel (FL) and the rear right wheel (RR), and the second port (340) can be connected to the front right wheel (FR) and the rear left wheel (RL).

[0059] The first port (330) and the second port (340) are provided with the same directionality in the brake master cylinder (300) and are structured to penetrate one side of the case (100) together, thereby contributing to the realization of a compact size of the brake pedal device.

[0060] Hydraulic hoses are connected to the first port (330) and the second port (340), respectively, so that brake hydraulic pressure can be transmitted to the front wheel braking device (30) and the rear wheel braking device (40), respectively, through the hydraulic hoses.

[0061] The power transmission unit (400) may include: a rotation link (410) having one end rotatably coupled to the pedal unit (100) at a position above the rotation center of the pedal unit (100) and the other end extended forward; a pedal rod (420) rotatably coupled to the other end of the rotation link (410), extending forward, and having a first rack gear (421) at the front end; a master cylinder rod (430) arranged parallel to the pedal rod (420), having one end connected to the brake master cylinder (300) and the other end equipped with a second rack gear (431); and a pinion gear (440) that meshes simultaneously with the first rack gear (421) and the second rack gear (431) between the pedal rod (420) and the master cylinder rod (430).

[0062] The rotating link (410) is formed as a straight rod and can be configured as a pair for stable operation.

[0063] One end of the rotating link (410) can be rotatably connected to the pedal arm (230) via the fifth pin (451), and the other end of the rotating link (410) can be rotatably connected to one end of the pedal rod (420) via the sixth pin (452) while extended forward.

[0064] According to the disclosed embodiment, one end of the rotating link (410) coupled with the pedal portion (200) is positioned relatively higher than the other end of the rotating link (410) coupled with the pedal rod (420), so that the rotating link (410) can be installed in a diagonal direction.

[0065] That is, the fifth pin (451) connecting one end of the pedal arm (230) and the rotation link (410) can be located relatively higher than the third pin (250), which is the rotation center of the pedal arm (230).

[0066] Additionally, with the other end of the rotating link (410) positioned to face forward, the fifth pin (451) can be positioned relatively higher than the sixth pin (452) that connects the other end of the rotating link (410) and one end of the pedal rod (420), and as a result, the rotating link (410) can be installed diagonally with the rear higher and the front lower.

[0067] The diagonal installation structure of the rotary link (410) is intended to induce smooth rotation of the rotary link (410) when the pedal arm (230) is rotated by driver operation, and thereby induce smooth linear movement of the pedal rod (420).

[0068] The pedal rod (420) and the master cylinder rod (430) can be spaced apart from each other left and right, extended forward and backward, and arranged parallel to each other.

[0069] A first rack gear (421) and a second rack gear (431) are provided at the front end of the pedal rod (420) and the front end of the master cylinder rod (430), respectively, and the first rack gear (421) and the second rack gear (431) are arranged facing each other, and a pinion gear (440) is arranged between the first rack gear (421) and the second rack gear (431) so that the pinion gear (440) can mesh with the first rack gear (421) and the second rack gear (431) simultaneously.

[0070] A bush (450) that serves as the rotational center of the pinion gear (440) penetrates the center of the pinion gear (440), and a bolt (460) can penetrate the bush (450) and the case (100) to be combined with a nut (470).

[0071] The pedal rod (420) and the master cylinder rod (430) can be connected to move in opposite directions relative to each other with respect to the vehicle's front and rear directions.

[0072] That is, when the pedal rod (420) moves forward, the master cylinder rod (430) moves straight backward by the rotation of the pinion gear (440), and when the pedal rod (420) moves backward, the master cylinder rod (430) can move straight forward by the rotation of the pinion gear (440).

[0073] A standard pedal has the disadvantage that the pedal operation direction and the movement direction of the master cylinder rod (430) are the same, and thus the space occupied by the pedal and the brake master cylinder (300) is large, but the disclosed embodiment overcomes this disadvantage and can be effectively applied to small vehicles with limited interior space.

[0074] A brake pedal device according to the disclosed embodiment may further include: a spring seat (510) located within a case (100) and coupled to a pedal portion (200); a spring block (520) located within the case (100) and fixed to the case (100); and a return spring (530) installed so that both ends are supported by the spring seat (510) and the spring block (520) and returns the pedal portion (200) by spring force.

[0075] The spring seat (510) can be fixedly coupled to the pedal arm (230) located above the rotating link (410) within the case (100) via the seventh pin (540).

[0076] The spring block (520) is installed so as to be fixed to the inner bottom of the case (100) via the eighth pin (550), but can be installed so as to be fixed at a position sufficiently spaced forward so as not to interfere with the rotating link (410) when the rotating link (410) is operated.

[0077] According to the disclosed embodiment, the pedal rod (420) can be installed to move back and forth through the spring block (520), and thus the spring block (520) can serve to guide the forward and backward movement of the pedal rod (420).

[0078] The return spring (530) serves to return the pedal arm (230) by spring force and can be composed of, for example, a coil spring.

[0079] When the driver operates the pedal pad (210) and the pedal arm (230) rotates forward, the return spring (530) is compressed, and when the driver's operating force is released from the pedal pad (210) while the pedal arm (230) is rotated forward, the pedal arm (230) can return to its initial position by the spring force of the return spring (530).

[0080] According to the disclosed embodiment, when the pedal part (200) rotates forward relative to the case (100) by operation of the driver, if the front surface of the pedal part (200) comes into contact with the case hole (140) formed in the case (100), the operation stroke of the pedal part (200) can be restricted.

[0081] That is, when the driver operates the pedal pad (210) and the pedal arm (230) rotates forward, if the front surface of the pedal arm (230) comes into contact with the front surface of the case hole (140), the stroke during operation of the pedal part (200) can be restricted.

[0082] According to the disclosed embodiment, a rod projection (480) may be provided to protrude from the outer surface of the pedal rod (420) that is exposed toward the front through the spring block (520).

[0083] The rod protrusion (480) can be formed to protrude radially from the pedal rod (420) and connected to a circular ring along the circumferential direction of the pedal rod (420).

[0084] Accordingly, when the pedal part (200) returns to the starting position using the spring force of the return spring (530), if the rod projection (480) comes into contact with the front of the spring block (520), the return stroke of the pedal part (200) can be restricted.

[0085] That is, when the driver's operating force is released from the pedal pad (210) while the pedal arm (230) is rotated forward, the pedal arm (230) rotates in a direction of return due to the spring force of the return spring (530), and at this time, when the rod projection (480) provided on the pedal rod (420) contacts the front of the spring block (520), the return stroke of the pedal arm (230) can be restricted.

[0086] The brake pedal device according to the disclosed embodiment may further include: a brake light switch (610) fixedly coupled to a case (100); a stopper bracket (620) provided to be connected to the pedal part (200); and a stopper (630) fixedly provided to the stopper bracket (620), which contacts the brake light switch (610) when the driver's pedal part (200) is not operated, and separates from the brake light switch (610) when the driver's pedal part is operated.

[0087] The brake light switch (610) can be fixedly coupled to the upper surface of the case (100), and the stopper bracket (620) can be fixedly coupled to the spring seat (510) coupled to the pedal arm (230), so that the stopper bracket (620) can be provided to be connected to the pedal part (200) through the spring seat (510).

[0088] Referring to FIGS. 4 to 7, the case (100) may be composed of a first case (110) on the left and a second case (120) on the right.

[0089] A case hole (140) that allows a pedal arm (230) to pass through the upper surface of the case (100) and to allow rotation of the pedal arm (230) in the forward and backward directions may be formed to extend in the forward and backward directions.

[0090] Additionally, on the upper surface of the case (100), a nipple hole (151) to which the first nipple (310) and the second nipple (320) are coupled, and a switch hole (152) to which the brake light switch (610) is coupled may be formed.

[0091] A port hole (153) to which a first port (330) and a second port (340) are combined may be formed on one side of the case (100).

[0092] A first guide (154) and a second guide (155) may be provided on the inner bottom of the case (100) so as to be spaced apart in the front and rear directions.

[0093] The left and right sides of the hinge bracket (220) can be inserted into the space between the bottom of the case (100) and the first guide (154) and then fixedly coupled by the second pin (240), and the left and right sides of the spring block (520) can be inserted into the space between the bottom of the case (100) and the second guide (155) and then fixedly coupled by the eighth pin (550).

[0094] By using the first guide (154) and the second guide (155), the hinge bracket (220) and the spring block (520) can be installed more stably and securely.

[0095] Additionally, on one side of the interior of the case (100), a guide groove (156) formed with an arc-shaped cross section and extended in the front-rear direction may be provided, and a master cylinder rod (430) may be inserted into the guide groove (156) so that the movement of the master cylinder rod (430) in the front-rear direction may be guided by the guide groove (156).

[0096] Below the guide groove (156), a seating portion (157) may be provided in which a pinion gear (400) is rotatably seated.

[0097] FIGS. 11 to 13 show the state before the driver operates the pedal unit (100), and FIGS. 14 to 16 show the state after the driver operates the pedal unit (100).

[0098] When the driver operates the pedal pad (210) by stepping on it with their foot (arrow F1), the rotation link (410) rotates (arrow R2) by the forward rotation of the pedal arm (230) (arrow R1), and the pedal rod (420) moves straight forward by the rotation of the rotation link (410) (arrow M1), and the master cylinder rod (430) moves straight backward by the rotation of the pinion gear (440) (arrow R3) when the pedal rod (420) moves forward (arrow M2).

[0099] When the master cylinder rod (430) moves backward, the brake master cylinder (300) is compressed, and brake hydraulic pressure is generated. The generated brake hydraulic pressure is transmitted to the front wheel braking device (30) and the rear wheel braking device (40) through the first port (330) and the second port (340) to generate braking force.

[0100] A vehicle according to the disclosed embodiment may include a case (100) installed on a vehicle panel part (10), a pedal part (200) and a brake master cylinder (300) installed together on the case (100), a brake pedal device in which the operating direction of the pedal part (200) and the installation direction of the brake master cylinder (300) are the same in the front-rear direction; and a braking device located on a wheel of the vehicle and generating braking force when the brake pedal device is operated.

[0101] The braking device may include a front wheel braking device (30) and a rear wheel braking device (40).

[0102] As described above, the brake pedal device according to the disclosed embodiment is configured such that a pedal part (200) operated by a driver and a brake master cylinder (300) that generates brake hydraulic pressure are provided together in a single case (100), and the external size of the brake pedal device can be configured to a compact size, and it can be effectively applied to small vehicles, thereby having the advantage of improving productivity and marketability.

[0103] In addition, the disclosed embodiment has the advantage of being effectively applicable to small vehicles with limited interior space in the left and right directions, as the operating direction of the pedal unit (200) and the installation direction of the brake master cylinder (300) are the same in the front and rear directions, thereby allowing the size of the width (D1) of the brake pedal device in the left and right directions to be reduced.

[0104] In addition, the disclosed embodiment is configured such that the pedal part (200) is an organ-type pedal, which has the advantage of being advantageous for pedal operation when applied to a small vehicle with a high seating position in the driver's seat.

[0105] Although specific embodiments of the disclosed embodiments have been illustrated and described, it will be obvious to those skilled in the art that the disclosed embodiments may be modified and changed in various ways without departing from the technical spirit of the disclosed embodiments provided by the following claims. Explanation of the symbols

[0106] 10 - Panel section 20 - Brake fluid reservoir tank 30 - Front braking system 40 - Rear braking system 100 - Case 110 - Case 1 120 - Case 2 130 - 1st pin 140 - Case Hole 151 - Nipple Hole 152 - Switchhole 153 - Switchhole 154 - Guide 1 155 - 2nd Guide 156 - Guide Home 200 - Pedal section 210 - Pedal Pad 220 - Hinge bracket 230 - Pedal Arm 240 - 2nd pin 250 - 3rd pin 260 - 4th pin 300 - Brake Master Cylinder 310 - 1st nipple 320 - 2nd nipple 330 - 1st port 340 - 2nd port 400 - Power transmission unit 410 - Rotating link 420 - Pedal Road 421 - 1st Rack Gear 430 - Master Cylinder Rod 431 - 2nd Rack Gear 440 - Pinion gear 450 - Bush 460 - Bolt 470 - Nut 480 - Road protrusion 510 - Spring Seat 520 - Spring Block 530 - Return spring 540 - 7th pin 550 - 8th pin 610 - Brake light switch 620 - Stopper Bracket 630 - Stopper

Claims

Claim 1 A brake pedal device characterized by comprising: a case fixedly installed on a vehicle panel; a pedal part rotatably installed on the case and operated by a driver; and a brake master cylinder fixedly installed within the case, which operates by transmitting operating force through the pedal part and generates brake hydraulic pressure upon operation. Claim 2 A brake pedal device according to claim 1, further comprising a power transmission unit positioned within the case and arranged in the front-rear direction, connecting the pedal unit and the brake master cylinder to transmit the driver's operating force of the pedal unit to the brake master cylinder. Claim 3 A brake pedal device according to claim 1, wherein the pedal portion is an organ-type pedal that operates by rotating back and forth relative to the case around the other end hinged to the case when the driver steps on one end protruding upward from the case with their foot. Claim 4 A brake pedal device according to claim 1, wherein the pedal portion comprises: a pedal pad operated by a driver; a hinge bracket fixed within the case; and a pedal arm installed through the upper surface of the case, one end of which is coupled to the pedal pad from the outside of the case, and the other end of which is rotatably coupled to the hinge bracket. Claim 5 A brake pedal device according to claim 1, characterized in that the first nipple and the second nipple connected to the brake oil reservoir tank in the brake master cylinder are provided to penetrate the upper surface of the case and be exposed to the outside. Claim 6 A brake pedal device according to claim 1, characterized in that the first port and the second port connected to the front wheel braking device and the rear wheel braking device in the brake master cylinder are provided to be exposed to the outside by penetrating one side of the case. Claim 7 A brake pedal device according to claim 2, wherein the power transmission unit comprises: a rotary link having one end rotatably coupled to the pedal portion at a position above the rotation center of the pedal portion and the other end extending forward; a pedal rod rotatably coupled to the other end of the rotary link, extending forward, and having a first rack gear at the front end; a master cylinder rod arranged parallel to the pedal rod, having one end connected to a brake master cylinder and the other end having a second rack gear; and a pinion gear that meshes simultaneously with the first rack gear and the second rack gear between the pedal rod and the master cylinder rod. Claim 8 A brake pedal device according to claim 7, characterized in that one end of the rotating link coupled to the pedal part is positioned relatively higher than the other end of the rotating link coupled to the pedal rod, so that the rotating link is installed in a diagonal direction. Claim 9 A brake pedal device according to claim 7, wherein one inner side of the case is provided with a guide groove formed with an arc-shaped cross-section and extended in the front-rear direction; and wherein a master cylinder rod is inserted into the guide groove and the front-rear movement of the master cylinder rod is guided by the guide groove. Claim 10 A brake pedal device according to claim 1, characterized in that when the pedal part rotates forward relative to the case by operation of the driver, the front surface of the pedal part contacts a case hole formed in the case, thereby restricting the operation stroke of the pedal part. Claim 11 A brake pedal device according to claim 7, further comprising: a spring seat located within the case and coupled to the pedal portion; a spring block located within the case and fixed to the case; and a return spring installed such that both ends are supported by the spring seat and the spring block, and which returns the pedal portion by spring force. Claim 12 A brake pedal device according to claim 11, characterized in that the pedal rod is installed to be movable back and forth through a spring block. Claim 13 A brake pedal device according to claim 11, wherein a rod projection is provided protruding from the outer surface of a pedal rod exposed toward the front through the spring block; and wherein the return stroke of the pedal part is restricted when the rod projection contacts the front surface of the spring block when the pedal part performs a return operation by the spring force of the return spring. Claim 14 A brake pedal device according to claim 1, further comprising: a brake light switch fixedly coupled to the case; a stopper bracket provided to be connected to the pedal portion; and a stopper fixedly provided to the stopper bracket, which contacts the brake light switch when the driver does not operate the pedal portion and separates from the brake light switch when the driver operates the pedal portion. Claim 15 A brake pedal device according to claim 7, wherein the pedal rod and the master cylinder rod are spaced apart from each other left and right; and the pedal rod and the master cylinder rod are connected to move in opposite directions relative to the vehicle's front-rear direction. Claim 16 A brake pedal device according to claim 7, characterized in that when the pedal rod moves forward, the master cylinder rod moves linearly backward by the rotation of the pinion gear; and when the pedal rod moves backward, the master cylinder rod moves linearly forward by the rotation of the pinion gear. Claim 17 A vehicle characterized by comprising: a case installed in the vehicle panel section, a pedal section and a brake master cylinder installed together in the case, wherein the operating direction of the pedal section and the installation direction of the brake master cylinder are the same in the front-rear direction; and a braking device located on the wheel of the vehicle and generating braking force when the brake pedal device is operated.

Images