Brake operating mechanism

Abstract

To provide a brake operation mechanism capable of properly using a brake without loosening a brake wire when applying the brake with a simple constitution, and easily adding an operation means.SOLUTION: The transmission portion 340 that connects the first wire 311, the second wire 321, and the brake wire 331 to transmit a tensile force includes the transmission portion main body 350, the slide member 360 connected to the second wire 321, and the pulling member 370 connected to the first wire 311 and the brake wire 331, and is configured such that the first wire 311 pulls the pulling member 370 to pull the brake wire 331 when the first wire 311 is pulled. When the second wire 321 is pulled, the slide member 360 is pulled, and the pulling member 370 in contact with the slide member 360 is pulled to pull the brake wire 331.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a brake actuating mechanism that actuates a brake unit by at least two operating means. [Background technology]

[0002] Conventionally, a known braking device used on a tricycle or the like having a pair of rear wheels is equipped with a brake actuation mechanism that applies the brakes to both wheels of the pair on the left and right sides simultaneously by operating one of two operating means, i.e., brake levers, attached to the left and right sides of the handlebars, thereby controlling the vehicle body equally (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2013-119341 Summary of the Invention [Problem to be solved by the invention]

[0004] The brake device 22 provided on a bicycle 2 (the names and symbols of the components in this and the next paragraphs follow the notation in Patent Document 1) known from Patent Document 1 etc. comprises a pair of brake levers 30 attached to the left and right sides of the handlebars 10, which are connected to a connector 36 by a lever wire 38, and the connector 36 comprises a pulling part 62, a driven part 64, and a pin 66; when either the left or right brake lever 30 is operated, the lever wire 38 connected to that brake lever 30 is pulled, and the pulling part 62 connected to the lever wire 38 rotates, thereby pulling the driven part 64 evenly. As a result, the pair of rear wheels 14 are braked equally regardless of whether the left or right brake lever 30 is operated. However, when either the left or right lever wire 38 is operated and the follower part 64 is pulled accordingly, there is a risk that the lever wire 38 that is not pulled will not be tensioned and will become loose.In addition, this will cause the brake lever 30 to also become loose, and even if the brake lever 30 is squeezed, the braking effect will not change, which could mean that the driver will not be able to apply the brakes as intended, and it could also mean that the driver will not be able to use the brakes properly.

[0005] Furthermore, as the towing portion 62 rotates, the orientation of the towing portion 62 relative to the stay 42 changes, which may cause sliding resistance when the wire main body 46 moves, and furthermore, there is a risk that the wire main body 46 may break due to repeated sliding. Furthermore, if one were to add a new means of applying the brakes, such as a parking brake, to the brake device 22, one of the lever wires would have to be diverted for parking, or a new lever wire 38 would have to be connected to the towing section 62 and pulled, but there would be no tension on the lever wire 38 that is not being pulled, and there is a risk that the lever wire 38 would become loose. Furthermore, as the lever wire 38 becomes loose, the brake lever 30 also becomes loose, and even when the brake lever 30 is gripped, the braking effect does not change, which may result in the driver being unable to apply the brakes as intended, making it impossible to use the brakes in different ways, and further, reducing the expandability of the operating means.

[0006] The present invention is intended to solve these problems, and aims to provide a brake operating mechanism that has a simple configuration, does not loosen the brake wire when the brakes are applied, allows for different brakes to be used, and allows for easy addition of operating means. [Means for solving the problem]

[0007] The brake actuation mechanism of the present invention is a brake actuation mechanism that actuates a brake unit by at least two operating means, and has a first wire that is pulled by a first operating means, a second wire that is pulled by a second operating means, a brake wire that pulls and activates the brake unit, and a transmission unit that connects the first wire, the second wire, and the brake wire and transmits a tensile force, the transmission unit having a transmission unit main body, a slide member connected to the second wire, and a pulling member connected to the first wire and the brake wire, and is configured so that when the first wire is pulled, the first wire pulls the pulling member, thereby pulling the brake wire, and when the second wire is pulled, the second wire pulls the slide member, thereby pulling the pulling member abutting the slide member, thereby pulling the brake wire, thereby solving the above-mentioned problem. [Effects of the Invention]

[0008] According to the inventions of claims 1 and 6, there is provided a brake device comprising a first wire pulled by a first operating means, a second wire pulled by a second operating means, a brake wire that pulls and activates the brake unit, and a transmission unit that connects the first wire, the second wire, and the brake wire and transmits a tensile force, the transmission unit comprising a transmission unit main body, a slide member connected to the second wire, and a pulling member connected to the first wire and the brake wire, and configured such that when the first wire is pulled, the first wire pulls the pulling member, thereby enabling the brake wire to be pulled, and when the second wire is pulled, the second wire pulls the slide member, thereby pulling the pulling member abutting against the slide member, thereby enabling the brake wire to be pulled, so that when the brake unit is activated, the first wire or the second wire does not slacken, and the brake unit can be activated as intended by the driver. Furthermore, since the brake portion can be operated by the operating means of the first wire and the second wire, it is possible to use different operating means. Furthermore, since the longitudinal directions of the brake wire, first wire, and second wire are aligned with the operating directions of the slide member and tension member, no sliding resistance occurs in the wires, which not only reduces the force required to operate the brake unit but also extends the service life of the wires.

[0009] According to the configuration described in claim 2, the tensioning member is connected to at least two or more brake wires and is configured to be able to pull simultaneously, so that when the brake unit is activated, braking can be applied to multiple objects simultaneously.

[0010] According to the configuration described in claim 3, the second wire has an engaging member, and when the second wire is pulled, the engaging member and the sliding member come into contact with each other, thereby pulling the pulling member, thereby ensuring that the pulling member is pulled.In addition, by changing the mounting position of the engaging member, the play when the second wire is pulled and the operation of the brake section can be easily adjusted.

[0011] According to the configuration described in claim 4, the brake wire, the first wire, and the second wire are each inserted through the outer tube so as to be movable relative to the outer tube, and one end of the outer tube of the brake wire and one end of the outer tube of the second wire are fixed to the transmission unit main body, and one end of the outer tube of the first wire is fixed to the slide member.Therefore, when the slide member and the pulling member are pulled, the brake wire, the first wire, and the second wire do not slide directly against the transmission unit main body and the slide member, and the useful life of each wire can be extended.

[0012] According to the configuration described in claim 5, the outer tube of the first wire is not fixed to the transmission unit main body, and when the second wire is pulled, the outer tube of the first wire is also pulled as the sliding member is pulled, which not only allows the sliding member to be pulled smoothly, but also prevents the first wire and the transmission unit main body from sliding directly against each other, thereby extending the service life of the first wire. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front perspective view of a tricycle equipped with a brake actuation mechanism according to an embodiment of the present invention; [Figure 2] Top view of the tricycle in Figure 1. [Figure 3] 2. A cross-sectional view of the AA section in FIG. [Figure 4] FIG. 2 is a perspective view of the propulsion unit of the tricycle of FIG. 1 from above. [Figure 5] FIG. 2 is a front perspective view of the running unit of the tricycle of FIG. 1. [Figure 6] FIG. 2 is a side view of the propulsion unit of the tricycle of FIG. 1; [Figure 7] FIG. 4 is a perspective view of the brake actuation mechanism as seen from the first wire unit side. [Figure 8] FIG. 4 is a perspective view of the brake actuation mechanism as seen from the brake wire unit side. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. 10 is an enlarged cross-sectional view of a transmission part taken along the cross section BB in FIG. 9 . [Figure 12] FIG. 10 is an enlarged cross-sectional view of a transmission part taken along the CC cross section in FIG. 9 . [Figure 13] FIG. 4 is an enlarged top view of a transmission section of the brake actuation mechanism when in the first operating mode. [Figure 14] FIG. 14 is an enlarged cross-sectional view of the transmission part taken along the cross section DD in FIG. 13 . [Figure 15] FIG. 10 is an enlarged top view of the transmission section of the brake actuation mechanism when in the second operating mode. [Figure 16] FIG. 16 is an enlarged cross-sectional view of a transmission section taken along the E-E cross section in FIG. 15 . DETAILED DESCRIPTION OF THE INVENTION

[0014] A tricycle 100 equipped with a brake actuation mechanism 300 according to an embodiment of the present invention will now be outlined with reference to the drawings. 1 to 3, other components of the traveling vehicle, such as a drive unit and a transmission mechanism, are not shown. Also, in Figures 1 and 2, the first wire unit 310 and the second wire unit 320 are not shown, but in reality the first wire unit 310 is connected to the left brake lever 123L, and the second wire unit 320 is connected to the lock lever 125, and the rear wheel brake section 160 can be operated by operating the left brake lever 123L and the lock lever 125. Also, although the brake wire unit 330 is not shown in Figures 1 to 3, in reality a pair of brake wire units 330 are connected to the brake operating mechanism 300 and are configured to be able to operate the rear wheel brake section 160 when the left brake lever 123L and the lock lever 125 are operated. Furthermore, directions such as forward, backward, right, left, etc. are based on the line of sight of the user riding the tricycle 100 in a straight line.

[0015] As shown in Figures 1 to 3, the tricycle 100 has a main frame 110, an operating unit 120, a front wheel 130, a front wheel brake unit 140, a pair of left and right rear wheels 150 (right rear wheel 150R, left rear wheel 150L), a pair of left and right rear wheel brake units 160 (right rear wheel brake unit 160R, left rear wheel brake unit 160L), a running unit 200, and a brake operating mechanism 300.

[0016] The main body frame 110 is formed with a down tube 111, a head tube 112 that rotatably supports a handlebar 121, and a seat tube 113 that supports a saddle . A pair of left and right front panels 114 are fixed to the rear side of the main body frame 110, and a pair of left and right rear panels 115 are fixed to the rear side of the pair of left and right front panels 114. In FIG. 1, only the outlines of the left front panel 114 and the left rear panel 115 are shown, and in FIG. 2, only the outlines of the saddle 116 are shown.

[0017] The operating unit 120 includes a handlebar 121 rotatably supported above the head tube 112, a pair of left and right handlebar grips 122 (right handlebar grip 122R, left handlebar grip 122L) fixed to both the left and right ends of the handlebar 121, a pair of left and right brake levers 123 (right brake lever 123R, left brake lever 123L) fixed to both the left and right sides of the handlebar 121, a front fork 124 supported below the head tube 112 so as to be rotatable in conjunction with the movement of the handlebar 121, and a lock lever 125 fixed on the seat tube 113 and having a locking function.

[0018] The front wheel 130 is rotatably connected to the front fork 124 . The front wheel brake section 140 has a front wheel brake caliper 142 fixed to the lower part of the front fork 124 and a front wheel brake disc connected coaxially with the front wheel 130 so as to be able to rotate integrally, and is configured to be able to suppress rotation of the front wheel 130.

[0019] Next, the running unit 200 of the tricycle 100 will be described with reference to the drawings. As shown in Figures 4 to 6, the traveling unit 200 has a swing transmission unit 220 connected to the front panel 114 and the rear panel 115, a pair of left and right swing arms 212 (right swing arm 212R, left swing arm 212L) that are swingably mounted on the swing transmission unit 220 around a swing shaft 211 (right swing shaft 211R, left swing shaft 211L), and rear wheels 150 (right rear wheel 150R, left rear wheel 150L) that are rotatably connected to the swing arms 212 by respective rotation shafts 213 (right rotation shaft 213R, left rotation shaft 213L). The swing transmission part 220 has a semicircular right swing sprocket 221 which is a right swing rotating body connected by the right swing arm 212R and the right swing shaft 211R, a semicircular left swing sprocket 222 which is a left swing rotating body connected by the left swing arm 212L and the left swing shaft 211L, a right transmission sprocket 223 which is a right transmission rotating body that transmits rotation via the right swing sprocket 221 and the right chain 226 which is a right transmission member, and a left transmission sprocket 224 which is a left transmission rotating body that transmits rotation via the left swing sprocket 222 and the left chain 227 which is a left transmission member. The right transmission sprocket 223 and the left transmission sprocket are connected by a linking shaft 225 that connects their respective rotation shafts.

[0020] The right chain 226 has both ends fixed to the right swing sprocket 221 and the right transmission sprocket 223 , and is looped between the lower side of the right swing sprocket 221 and the lower side of the right transmission sprocket 223 . The left chain 227 has both ends fixed to the left swing sprocket 222 and the left transmission sprocket 224 , and is looped between the lower side of the left swing sprocket 222 and the upper side of the left transmission sprocket 224 . This allows the right swing sprocket 221 and the left swing sprocket 222 to rotate in opposite directions in conjunction with each other.

[0021] The rear wheel brake section 160 has a pair of left and right rear wheel brake calipers 162 (right rear wheel brake caliper 162R, left rear wheel brake caliper 162L) fixed to a pair of left and right fixed members 163 (right fixed member 163R, left fixed member 163L) connected to a pair of left and right swing arms 212 (right swing arm 212R, left swing arm 212L), and a pair of left and right rear wheel brake discs 161 (right rear wheel brake disc 161R, left rear wheel brake disc 161L) connected coaxially with the rotation shaft 213 (right rotation shaft 213R, left rotation shaft 213L) so as to be able to rotate integrally, and is configured to be able to suppress rotation of the rear wheel 150.

[0022] Next, the brake actuation mechanism 300 of the tricycle 100 will be described with reference to the drawings. As shown in FIGS. 1 and 3, the brake actuation mechanism 300 is attached to the inside of the left front panel 114, and is configured to be able to actuate the rear wheel brake section 160 by means of a first operating means and a second operating means. As shown in Figures 3 and 7 to 12, the brake operating mechanism 300 has a first wire unit 310 that is inserted inside the down tube 111 and connected to the left brake lever 123L, a second wire unit 320 that is inserted inside the seat tube 113 and connected to the lock lever 125, a pair of brake wire units 330 that are connected to the rear wheel brake section 160, and a transmission section 340 that is connected to the first wire unit 310, the second wire unit 320, and the pair of left and right brake wire units 330 and transmits tensile force.

[0023] In the first wire unit 310, the first wire 311 is inserted through an outer tube 312 of the first wire 311 so as to be relatively movable. Furthermore, the left brake lever 123L and a first wire 311 are connected together, and when the left brake lever 123L is pulled, the first wire 311 is also pulled.

[0024] In the second wire unit 320, the second wire 321 is inserted through an outer tube 322 of the second wire 321 so as to be relatively movable, and the second wire 321 has an engaging member 323 at one end thereof. In addition, the lock lever 125 and the second wire 321 are connected, and when the lock lever 125 is pulled, the second wire 321 is also pulled, and when the lock lever 125 is locked in the pulled state, the second wire 321 is also configured to remain pulled.

[0025] In each of the pair of brake wire units 330, a brake wire 331 is inserted into an outer tube 332 of the brake wire 331 so as to be relatively movable, and an engaging member 333 is provided at one end of the brake wire 331. In addition, one of the pair of brake wire units 330 is connected to the right rear wheel brake section 160R, and the other is connected to the left rear wheel brake section 160L, so that when the brake wire 331 is pulled, the rear wheel brake section 160 can be operated.

[0026] The transmission part 340 has a transmission part main body 350, a slide member 360 to which the second wire unit 320 is connected, and a tension member 370 to which the first wire unit 310 and the pair of brake wire units 330 are connected.

[0027] The transmission unit main body 350 has a lower surface 351 with an attachment hole 358, and an abutment wall 352 with a pair of brake wire slits 356 and a first wire slit 357, and a traction wall 353 with a first wire through hole 354 and a second wire through hole 355 are configured to form a U-shape with respect to the lower surface 351. One end of each outer tube 332 of the pair of brake wires 331 is fixed to the outer surface of the contact wall 352, and the brake wire 331 is inserted through the brake wire slit 356 so as to be relatively movable. Further, the outer tube 312 of the first wire 311 is inserted into the first wire through hole 354 so as to be relatively movable, and one end of the first wire 311 is inserted into the first wire slit so as to be relatively movable. One end of the outer tube 322 of the second wire 321 is fixed to the outer surface side of the traction wall 353, and the second wire 321 is inserted through the second wire through hole 355 so as to be relatively movable.

[0028] The slide member 360 has a lower surface 361, and is configured such that an abutment wall 362 having a pair of brake wire through holes 366 and a first wire slit 367, and a traction wall 363 having a first wire through hole 364 and a second wire through hole 365 form a U-shape with respect to the lower surface 361. Furthermore, the pair of brake wires 331 inserted through the brake wire slits 356 so as to be relatively movable are inserted through the brake wire through holes 366 so as to be relatively movable. In addition, one end of the outer tube 312 of the first wire 311, which is inserted into the first wire through hole 354 so as to be able to move relative to the first wire, is fixed to the outer surface side of the traction wall 363, the first wire 311 is inserted into the first wire through hole 364 so as to be able to move relative to the first wire, and one end of the first wire 311 is inserted into the first wire slit 367 so as to be able to move relative to the first wire. In addition, the second wire 321, which is inserted into the second wire through hole 355 so as to be able to move relative to the first wire, is inserted into the second wire through hole 365 so as to be able to move relative to the first wire, and is configured so that the engaging member 323 abuts against the inner surface of the traction wall 363.

[0029] The tension member 370 is formed by fastening an upper member 371 formed in a roughly triangular shape having a first wire fixing member 376 and a pair of upper engagement holes 372, and a lower member 373 having a pair of lower engagement holes 374 with a fastening member 375, and an engagement member 333 of the brake wire 331 inserted into the brake wire through hole 366 so as to be able to move relative to the upper engagement hole 372 and the lower engagement hole 374 is engaged with. In addition, the first wire fixing member 376 is configured to be able to fix the first wire 311, and by fixing the first wire 311 that is inserted into the first wire through hole 364 so as to be able to move relatively, when the first wire 311 is pulled, the pulling member 370 can be pulled.

[0030] Here, when the first wire 311 and the second wire 321 are not pulled, the outer surface of the abutment wall 362 of the slide member 360 and the inner surface of the abutment wall 352 of the transmission unit main body 350 are configured to abut, and further, the side of the tension member 370 to which the engaging member 333 is engaged and the inner surface of the abutment wall 362 of the slide member 360 are configured to abut. Furthermore, the longitudinal length of the transmission unit main body 360 is longer than the longitudinal length of the slide member 360, and the longitudinal length of the slide member 360 is longer than the length of the tension member 370 in the tension direction. This makes it possible to pull the slide member 360 between the inner surface of the abutment wall 352 of the transmission unit main body 350 and the inner surface of the pulling wall 353, and also makes it possible to pull the tension member 370 between the inner surface of the abutment wall 362 of the slide member 360 and the inner surface of the pulling wall 363.

[0031] Next, the operation of the rear wheel brake unit 160 by the brake actuation mechanism 300 of the tricycle 100 will be described with reference to FIGS. The brake actuation mechanism 300 of the tricycle 100 can actuate the rear wheel brake unit 160 by two operating means, that is, a first operating means and a second operating means. The first operating means is a means that is primarily used to operate the rear wheel brake 160 to adjust the traveling speed when the tricycle 100 is traveling, and the second operating means is a means that is primarily used to operate the rear wheel brake 160 when the tricycle 100 is stopped, suppressing the interlocking movement of the rear wheel 150, thereby stopping the tricycle 100 while maintaining its self-standing state. This allows the rear wheel brake 160 to be used differently depending on the usage situation of the tricycle 100.

[0032] First, the first operating means for operating the rear wheel brake unit 160 by pulling the first wire 311 will be described. When the left brake lever 123L to which the first wire 311 is connected is pulled, the first wire 311 is also pulled in the direction of the inner surface of the pulling wall 363 of the slide member 360 accordingly. At this time, since the first wire 311 is fixed to the pulling member 370 by the first wire fixing member 376, as the first wire 311 is pulled, the pulling member 370 is pulled toward the inner surface of the pulling wall 363 of the slide member 360.

[0033] As the tension member 370 is pulled, the pair of brake wires 331 engaged with the tension member 370 by the engagement member 333 are also simultaneously pulled toward the inner surface of the pulling wall 363 of the slide member 360 . This allows the rear wheel brake unit 160 connected to the pair of brake wires 331 to be operated. At this time, the relative positions of the transmission unit main body 350 and the slide member 360 do not change, so that the second wire 321 does not become loose when the tension member 370 is pulled.

[0034] Next, a second operating means for operating the rear wheel brake unit 160 by pulling the second wire 321 will be described. When the lock lever 125 to which the second wire 321 is connected is pulled, the second wire 321 is also pulled in the direction of the inner surface of the pulling wall 353 of the transmission unit main body 350 . At this time, the engaging member 323 at the end of the second wire 321 is configured to abut against the inner surface of the pulling wall 363 of the slide member 360, so that as the second wire 321 is pulled, the slide member 360 is pulled toward the inner surface of the pulling wall 353 of the transmission unit main body 350. Here, since the inner surface of the abutment wall 362 of the slide member 360 is configured to abut against the tension member 370, as the slide member 360 is pulled, the tension member 370 is also pulled toward the inner surface of the pulling wall 353 of the transmission unit main body 350.

[0035] As the tension member 370 is pulled, the pair of brake wires 331 engaged with the tension member 370 are also simultaneously pulled in the inner surface direction of the pulling wall 353 of the transmission part main body 350 . This allows the rear wheel brake unit 160 connected to the pair of brake wires 331 to be operated. At this time, as the slide member 360 is pulled, the outer tube 312 of the first wire 311 is also pulled in the direction of the pulling wall 353 of the transmission unit main body 350, and the relative positions of the slide member 360 and the pulling member 370 do not change, so the first wire 311 does not slacken as the slide member 360 is pulled. In addition, by making the pull of the second wire 321 by the lock lever 125 greater than that of the first wire 311 by the left brake lever 123L of the first operating means, that is, by making the distance over which the slide member 360 and the pulling member 370 are pulled by the second operating means greater than the distance over which the pulling member 370 is pulled by the first operating means, it is possible to increase the braking force of the rear wheel brake unit 160.

[0036] Next, the interlocking operation of the rear right wheel 150R and the rear left wheel 150L by the traveling unit 200 of the three-wheeled bicycle 100 according to the embodiment of the present invention will be described with reference to FIGS. First, when the tricycle 100 is stopped and the body tilts to the left, the left rear wheel 150L rotates in response to the body tilt, and the left swing arm 212L swings upward about the left swing shaft 211L. At this time, the left swing sprocket 222 connected to the left swing arm 212L by the left swing shaft 211L also rotates, and since the left chain 227 is wound in opposite directions around the left transmission sprocket 224 and the left swing sprocket 222, the left transmission sprocket 224 rotates in the opposite direction to the left swing sprocket 222.

[0037] Furthermore, the right transmission sprocket 223 and the left transmission sprocket 224 are connected by a linking shaft 225 that connects their respective rotation shafts, so the right transmission sprocket 223 rotates in the same direction as the left transmission sprocket 224. Since the right chain 226 is wound around the right transmission sprocket 223 and the right swing sprocket 221 in the forward direction, the right swing sprocket 221 rotates in the same direction as the right transmission sprocket 223 and rotates in the opposite direction to the left swing sprocket 222. As a result, the right swing arm 212R connected to the right swing sprocket 221 by the right swing shaft 211R swings downward, causing the vehicle body to tilt leftward and the right rear wheel 150R to rotate. Furthermore, the interlocking relationship between the right rear wheel 150R and the left rear wheel 150L also acts such that the left swing arm 212L swings downward when the vehicle body tilts to the right.

[0038] Next, the locking operation of the tricycle 100 by the second operating means of the brake actuation mechanism 300 of the tricycle 100 will be described. First, when the tricycle 100 is stopped and the body is upright, and neither the right swing arm 211R nor the left swing arm 211L is swinging, if the lock lever 125 is pulled and locked in that state, the rear wheel brake section 160 is activated by the second operating means, and the state is maintained by locking the lock lever 125, thereby suppressing rotation of the right rear wheel 150R and the left rear wheel 150L. At this time, since the right rear wheel 150R and the left rear wheel 150L do not rotate, neither the right swing arm 212R nor the left swing arm 212L swings, and the tricycle 100 remains upright.

[0039] This allows the tricycle 100 to remain standing when stopped, eliminating the need for parts such as a stand. Furthermore, even when the tricycle 100 is parked sideways on a slope, the body can be kept standing by itself by locking the lock lever 125 while the swinging arm 212 is left swinging. Furthermore, by increasing the pulling amount of the second wire 321 by the lock lever 125, it is possible to increase the braking force when the tricycle 100 is stopped in the second operating mode. Furthermore, when the lock lever 125 is unlocked, the restriction on the rotation of the right rear wheel 150R and the left rear wheel 150L is also released, allowing the right rear wheel 150R and the left rear wheel 150L to move in conjunction with each other.

[0040] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design modifications can be made without departing from the present invention as set forth in the claims. The mounting manner of the brake actuation mechanism 300 is not limited to the inside of the left front panel 114 as described above, but may be any as long as it is configured so that the rear wheel brake section 160 can be actuated by an operating means. Furthermore, in the above-described embodiment, the lock lever 125 is provided on the seat tube 113, but it may be located in any position that is easy for the user to use, such as near the handlebars 121, for example. Furthermore, for example, in addition to the lock lever 125, an operating means such as a motor may be further provided to electrically pull the second wire 321. Furthermore, the vehicle may have two front wheels and the aforementioned propulsion unit may be provided on the front wheel side. [Explanation of symbols]

[0041] 100 ··· Tricycle 110 Main frame 111 Down tube 112 Head tube 113 Seat tube 114 Front Panel 115 Rear panel 116 Saddle 120...Operation unit 121 Handle 122 Handle Grip 123 Brake lever 124 Front fork 125 Lock lever 130 ··· front wheel 140 Front wheel brake 141 Front brake disc 142 Front brake caliper 150 ··· rear wheel 160 Rear wheel brake 161 Rear brake disc 162 Rear brake caliper 163 Fixing member 200 ··· Travel unit 211 ··· Oscillating shaft 212 ... swinging arm 213 Rotation axis 220 ··· Swing transmission part 221 Right-hand oscillating sprocket (right-hand oscillating rotor) 222 Left-handed sprocket (left-handed sprocket) 223 Right transmission sprocket (right transmission rotor) 224 Left transmission sprocket (left transmission rotor) 225 ··· Interlocking shaft 226 ... Right chain (right transmission strip) 227 Left Chain (Left Communicating Striata) 300 Brake operating mechanism 310 First wire unit 311 First Wire 312 Outer tube of first wire 320 Second wire unit 321 Second Wire 322 - Outer tube of second wire 323 Engagement member 330 Brake wire unit 331 Brake wire 332 Brake wire outer tube 333 Engagement member 340 Transmission section 350 Transmission unit body 351 ... bottom surface 352 ... abutting wall 353 ··· Traction wall 354 First wire through hole 355 Second wire through hole 356 Brake wire slit 357 First wire slit 358 Mounting hole 360 Slide member 361 ... bottom surface 362 ... abutting wall 363 ··· Traction wall 364 First wire through hole 365 - Second wire through hole 366 Brake wire through hole 367 First wire slit 370 Tensile member 371 Upper member 372... Upper engagement hole 373 Lower member 374 Lower engagement hole 375 Fastening member 376 First wire fixing member

Claims

1. A brake actuation mechanism that actuates a brake unit by at least two operating means, a first wire pulled by a first operating means; a second wire pulled by a second operating means; a brake wire that pulls and activates the brake unit; a transmission unit that connects the first wire, the second wire, and the brake wire and transmits a tensile force, the transmission unit includes a transmission unit main body, a slide member connected to the second wire, and a tension member connected to the first wire and the brake wire, When the first wire is pulled, the first wire pulls the tension member, thereby allowing the brake wire to be pulled, A brake actuation mechanism characterized in that, when the second wire is pulled, the second wire pulls the slide member, thereby pulling the pulling member abutting the slide member and thereby pulling the brake wire.

2. 2. The brake actuation mechanism according to claim 1, wherein the tension member is connected to at least two or more of the brake wires and configured to be able to pull the wires simultaneously.

3. 2. The brake actuation mechanism according to claim 1, wherein the second wire has an engaging member, and when the second wire is pulled, the engaging member comes into contact with the slide member, thereby pulling the tension member.

4. the brake wire, the first wire, and the second wire are inserted through the outer tube so as to be movable relative to the outer tube, one end of the outer tube of the brake wire and one end of the outer tube of the second wire are fixed to the transmission unit main body, 2. The brake actuating mechanism according to claim 1, wherein one end of the outer tube of the first wire is fixed to the slide member.

5. the outer tube of the first wire is not fixed to the transmission unit body, 5. The brake actuating mechanism according to claim 4, wherein when the second wire is pulled, the outer tube of the first wire is also pulled in conjunction with the pulling of the slide member.

6. A three-wheeled bicycle with two rear wheels, equipped with a brake actuation mechanism that actuates a brake unit by at least two operating means, 6. A tricycle, wherein the brake devices for the two rear wheels are actuated by a brake actuation mechanism according to any one of claims 1 to 5.

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