JP2018176860A - Braking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a braking device that is compact, can be readily operated without the necessity of a strong force, and can realize a safe and smooth braking action.SOLUTION: A braking device includes: a cylindrical internal wall surface that internally forms a cylindrical through hole; a cylindrical external wall surface that houses the internal wall surface in a separated state; and a slit that makes a part of the external wall surface open in a circumferential direction. The braking device includes: a fixing part that houses and fixes a handle in the through hole; a winding part that is housed in a cavity formed between the internal wall surface and the external wall surface, and is constituted by a curved shape in which a diameter from the center of a sectional circle of the through hole continuously varies from a small diameter to a large diameter so as to wind up the other end of a brake wire along the curved shape; and an operating part that is connected to the winding part through the slit and is formed with a projection-like operation lever that is movable along the slit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a brake device installed on a steering wheel and capable of stopping the traveling of a bicycle, and more particularly to a brake device which can be operated easily and has a safe and smooth braking action without requiring a strong force.

  In current bicycle brakes, the wire is pulled by pulling the brake lever provided on the handle toward the front with a grip force, and the brake mechanism acts on the wheel according to the tensile force of the wire. It is a mechanism to stop the rotation. Thus, there is an advantage that the operation can be easily understood since the bicycle can be stopped by the simple operation of simply grasping the brake device by hand.

  Furthermore, a brake device has been proposed in the prior art for making the brake operation easy to handle.

  In a conventional brake device, the brake mechanism is raised at the grip end and the grip is formed in an L-shape. For example, the grip can be made rotatable around its axis and integrated with the grip or the grip Patent Document 1 discloses a grip having an integrated brake actuator, in which a tip of a brake wire is locked to a part of a rotating continuum, and the grip is pulled to pull the brake wire to operate the brake.

  Also, for example, a female thread portion of a feed screw is provided at the tip of the grip, and similarly, an external thread portion of the feed screw is provided at the end of the handle so as to engage with the female thread, and a brake wire is passed through the hollow of the handle to the tip of the grip Lock the brake wire by moving and transmitting the force obtained by rotating the grip by applying the principle of the feed screw by combining the handle portion and the grip portion of the bicycle. There is also disclosed a braking device for a bicycle integrated with a rotating grip that is performed (see Patent Document 2).

JP, 2014-162365, A Unexamined-Japanese-Patent No. 11-321760 gazette

  However, in the conventional brake device, for example, as in the case of Patent Document 1 described above, in a shape in which the grip end of the brake device is L-shaped, a strong grip is required to sufficiently rotate the grip in order to apply the brake. And twisting of the wrist is also required, and a certain degree of familiarity is required, and the operability of the brake remains unfamiliar to general consumers. In addition, since the grip shape is a deformed shape different from the general shape, a certain degree of familiarity is required to require a handle operation different from usual not only for brake operation but also for normal driving, The operability of the steering wheel and brake is unfamiliar to general consumers, and the operability is limited.

  Further, for example, in the case where the brake wire is expanded and contracted by movement and transmission of the force obtained by rotating the grip itself as in the above-mentioned Patent Document 2, the grip itself is rotated, so that ordinary traveling In addition to the possibility that the hand-grip fixation may become unstable, a strong grip and twisting of the wrist are also required to fully rotate the grip in order to make the brake work, and some degree of habituation is necessary. Yes, the operability of the brakes is unfamiliar to general consumers and the operability is limited.

  Thus, in the conventional brake device, strong grip and twisting of the wrist are also required, and the operability is limited. In particular, for people with weak grip, those with injured hands and fingers, and those with hand disabilities, it is difficult to apply strong grip to the brake device, so that the brakes should be sufficiently effective. In many cases, you may not be able to drive a bicycle, or you may give up driving.

  Further, in the conventional brake device, the shapes of the left- and right-hand brake devices are mirror-symmetrical, so they have different shapes, and the manufacturing cost and the maintenance cost are also bulky. Furthermore, in terms of the degree of braking, safety and operability, a smoother brake is desired rather than a linear response brake, but at present, such flexibility still remains. There is no known brake system that can provide high braking performance.

  The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a brake device which has a compact shape, is easy to operate, can realize a safe and smooth brake operation without requiring a strong force. .

  The brake device disclosed in the present application is a brake device attached to the left and right handles of the bicycle, and is connected to the other end side of the brake wire whose one end side is fixed to the brake mechanism disposed in the vicinity of the wheel In the brake device that performs the braking operation on the wheel by the brake mechanism by pulling the other end side of the cylinder, the handle has a cylindrical shape, and the handle is inserted in a cylindrical through hole formed inside the cylindrical shape. It is formed between an inner wall surface which accommodates and fixes it and the inner wall surface, which has a cylindrical shape and which has a slit in the circumferential direction of the cylindrical shape, the inner wall surface and the outer wall surface Is formed in a curved shape which is accommodated in the hollow portion of the through hole and in which the distance from the cross-sectional circle center of the through hole continuously changes from the small diameter to the large diameter. The other end side of the yarn is an operation formed from a winding unit that winds up, and a projecting operation lever that is connected to the winding unit via the slit and has mobility along the circumferential direction of the slit And a unit.

  Thus, the winding portion is formed in a curved shape in which the distance from the cross-sectional circle center of the through hole continuously changes from the small diameter to the large diameter, and along the curved shape, the other end of the brake wire As the other side of the brake wire is taken up by the take-up unit since the winding side takes up the side, the braking radius acts gradually by the small diameter of the take-up radius initially, and the take-up radius gradually By continuously changing to a large diameter, the brake acts sharply, enabling efficient braking with less force, and it is possible to use a gentle brake and a strong brake smoothly, A more convenient and safer braking operation can be performed.

  In addition, since the winding unit constituting the operation unit is wound in the circumferential direction with the center of the cross-sectional circle of the through hole (i.e., the center of the cross section of the handle) as a central axis, the projection operation is performed according to the principle of leverage. Only by moving the lever in the vertical direction, by the easy operation of pushing only, even if it is a weak force, the force to pull the brake wire is amplified and the other end side of the brake wire is pulled more efficiently. As a result, a strong braking operation can be realized by an easy operation of simply pressing with a weak force without requiring a grip force. In addition, since the brake device has a ring shape having a cylindrical through hole inside the cylindrical shape, it becomes a structure for both the left and right handlebars, and parts for exclusive use with the left handlebar and parts for the right handlebar are unnecessary. The time and effort of maintenance such as replacement and the like is also suppressed, and it becomes an easy-to-use and excellent one.

  In the brake device disclosed in the present application, the take-up portion is rotatably accommodated in the hollow portion as needed. As described above, since the winding unit winds up the other end side of the brake wire in a braking operation, the diameter from the center of the cross section circle of the through hole along with the braking operation. However, the other end of the brake wire will be wound along a continuously changing curve shape more smoothly and dynamically from small diameter to large diameter, and at the beginning of the braking operation, the gentle braking works. In the second half of the braking operation, it is possible to more smoothly use the strong braking function effectively and perform the braking operation with higher convenience and safety.

  Moreover, the brake device disclosed in the present application is provided with an auxiliary fixing portion that winds the other end side of the brake wire at a front stage of the winding portion, as necessary. Thus, after the auxiliary fixing portion temporarily winds the other end side of the brake wire and then sends the other end side of the brake wire to the winding portion, the auxiliary fixing portion is like a pulley. While absorbing the movement (noise) of the brake wire that naturally occurs during bicycle travel, the load on the brake device is suppressed, and only the desired brake operation is accurately taken from the brake wire. As a result, the brake operation can be realized which is more efficient, more convenient and safer.

  Moreover, the brake device disclosed in the present application is provided with an end fixing portion connected to the fixing portion at the handle end side as needed. As described above, since the end fixing portion is connected to the fixing portion, the palm finger ball of the palm holding the end fixing portion performs the operation by holding the end fixing portion and performing the handle operation. The operation lever of the unit can be moved up and down, and an easy braking operation can be realized more simply and surely by simply inclining the ball of the hand holding the handle.

BRIEF DESCRIPTION OF THE DRAWINGS The sectional view showing the structure of the brake device which concerns on the 1st Embodiment of this invention is shown. The explanatory view showing the effect of the brake device concerning a 1st embodiment of the present invention is shown. The explanatory view explaining the composition at the time of providing the notch part of the brake device concerning a 1st embodiment of the present invention is shown. The explanatory view showing the state where the brake equipment concerning a 1st embodiment of the present invention was attached to the bicycle is shown. BRIEF DESCRIPTION OF THE DRAWINGS The sectional view showing the structure of the brake device which concerns on the 1st Embodiment of this invention is shown. The explanatory view explaining the outline of the brake operation of the brake device concerning a 1st embodiment of the present invention is shown. The explanatory view explaining the outline of the brake operation of the brake device concerning a 1st embodiment of the present invention is shown. The sectional view showing the composition of the brake equipment concerning a 2nd embodiment of the present invention is shown. The explanatory view showing operation of the brake equipment concerning a 3rd embodiment of the present invention is shown. The explanatory view showing the state where a brake device concerning a 4th embodiment of the present invention was joined to a steering wheel of a bicycle is shown. The explanatory view of the operation state which joined the brake device concerning a 4th embodiment of the present invention to the handle of a bicycle is shown.

First Embodiment
The brake system according to the first embodiment will be described below based on FIGS. 1 to 7 described above.

  The brake device according to the first embodiment is a brake device mounted on the left and right handles 100 of a bicycle as shown in FIG. 1A, and one end side thereof is fixed to a brake mechanism disposed in the vicinity of a wheel The brake device is connected to the other end side of the brake wire 200, and by pulling the other end side of the brake wire 200, the brake mechanism performs the braking operation on the wheel by the brake mechanism, and a cylindrical through hole is formed inside. And a cylindrical outer wall 12 for accommodating the inner wall in a separated state, and a slit 13 in which a part of the outer wall is opened along the circumferential direction. And the fixed portion 1 for accommodating and fixing the handle 100 in the through hole, and the hollow portion formed between the inner wall surface 11 and the outer wall surface 12; The diameter from the heart is configured in a curved shape that continuously changes from the small diameter to the large diameter, and along the curved shape, the winding portion 2 that winds the other end side of the brake wire 200 and the slit 13 And an operation unit 3 connected to the winding unit 12 and formed from a projecting operation lever having a movability along the slit 13.

  Further, as shown in FIG. 1A, a Tyco 201 for fixing the brake wire 200 is attached to the end of the other end of the brake wire 200, and the fixing unit 1 receives and fixes the Tyco 201. The inside of the outer wall surface 12 is provided with the Tyco accommodating portion 11 a. Further, an inlet 14 for introducing the end of the other end of the brake wire 200 into the inside of the outer wall 12 is provided in a part of the outer wall 12. The end of the other end of the brake wire 200 is introduced to the inside of the outer wall surface 12 through the introduction port 14 and accommodated in the above-mentioned Tyco accommodating part 11 a.

  The position at which the introduction port 14 is disposed is not particularly limited, and is preferably disposed in the lower half of the outer wall surface 12 in the vertical direction, considering that the wire 200 is used by hanging down. Furthermore, in consideration of using the wire 200 having a high hardness usually in a suspended state, it is more preferable that the initial position of the Tyco 201 (braking is applied in the lower half of the outer wall surface 12 in the vertical direction). It is to arrange in the vicinity directly under the condition of

  In addition to this, as a position where the inlet 14 is disposed, it is also possible to dispose the position just beside the initial position of the Tyco 201. In this case, the brake wire 200 is equally (equally) wound up by the operation lever of the operation unit 3 in any of the up and down movement, and by the up and down operation by the operation lever of the operation unit 3 (bidirectional ), It is possible to apply the brake operation, and it is possible to apply the brake operation with excellent operability in both directions, which has not been achieved conventionally.

  The material of the fixing portion 1 (including the inner wall surface 11 and the outer wall surface 12) is not particularly limited, and various synthetic resins and metals can be used. Preferably, an aluminum material is used, and more preferably , Anodized aluminum material, it is possible to obtain both lightness and robustness.

  The inner wall surface 11 forms a cylindrical through hole inside, and fixes the handle 100 by accommodating and tightening the handle 100 in the through hole. Although the method of fixing is not particularly limited, the inner wall surface 11 can be firmly tightened and fixed to the handle 100 by screwing using a screw.

  The slit 13 is formed by hollowing out a part along the circumferential direction of the cross-sectional circle of the outer wall surface 12. The width (circumferential length) opened along the circumferential direction is not particularly limited, but a width (circumferential length) of 30 ° to 90 ° in the circumferential direction is defined. It is preferable to hold it so that the braking operation can be performed smoothly without bending the wrist too much.

  The fixing portion 1 accommodates the handle 100 in the through hole, and fixes the handle 100 by bringing the entire inner wall 11 into contact with the handle 100 by tightening the inner wall 11 with a screw.

  The material of the winding unit 2 is not particularly limited, and various synthetic resins and metals can be used. Preferably, the material is an aluminum material, and more preferably an aluminum material subjected to an alumite treatment, Lightweight and robust. Although this winding part 2 is comprised by said curve shape, it does not specifically limit as this curve shape, Preferably, it can be made elliptical shape. Of course, a complete elliptical shape may be formed, but it is sufficient if it has an elliptical shape only in the area through which the brake wire 200 passes. That is, the curved shape may be a shape obtained by partially cutting an elliptical shape, or substantially only the movable range of the brake wire 200 may be an elliptical shape.

  In addition, since the brake device is formed in a ring shape having a cylindrical through hole inside the inner wall surface 11, the left and right handles are used together, and a left handle exclusive product and a right handle exclusive product are provided. It becomes unnecessary to separately manufacture, and the trouble of maintenance management such as attachment / detachment and replacement is suppressed, and it becomes excellent in usability.

  That is, the brake device can be designed to be able to use the same left and right parts by being configured in a ring shape, can be replaced without requiring a separate design or members, and can be easily manufactured. .

  The material of the operation unit 3 is not particularly limited, and various synthetic resins and metals can be used. Preferably, the material is an aluminum material, more preferably an aluminum material subjected to an alumite treatment, and light weight. It is possible to obtain

  The material of the operation lever constituting the operation unit 3 is not particularly limited, and various synthetic resins and metals can be used. Preferably, a material having a better touch feeling is preferable, for example, synthetic rubber It can be made of plastic or plastic, and at the time of braking, when the driver directly touches the operating lever and presses it, a soft touch is obtained for the driver's hand, and the braking operation is performed with a good sense of contact. be able to.

  By forming the operation unit 3 of a metal or resin made of a material familiar to the driver's hand, it is possible to maintain a high state of fixing between the brake device and the driver's hand, thereby further enhancing the stability. It can support the brake operation. In addition, when the driver uses it, also because it is a material that is used to being used conventionally, it is possible to obtain an excellent feeling of use that it is difficult to feel discomfort due to this operation lever.

The projecting control lever constituting the operation unit 3 is connected to the inner wall surface 11 by the connecting portion 31 constituting the operation unit 3 through the slit 13 as shown in FIG. 1A. .
In addition, since the operation lever is detachably connected to the inner wall surface 11, it is possible to enhance maintainability such as replacement or repair of the operation lever.

  Further, the arrangement position of the projecting control lever is not particularly limited as long as it is a position where the driver's hand strikes, but preferably, it is a position that can abut on the palm. The brake device having such a configuration is also called a palm brake bar (palm brake lever) in that, according to the name of the inventor, it applies to a palm (for example, depressing with a palm) to cause a braking operation. It is

  Further, the winding unit 2 is also not particularly limited as long as the other end side of the brake wire 200 is wound in the circumferential direction, but more preferably, it is wound in the circumferential direction centering on the center of the cross section of the handle 100 It is a configuration to be taken. As described above, since the winding unit 2 winds up in the circumferential direction with the cross-sectional center of the handle 100 as the central axis, it is only pushed by moving the projecting control lever in the vertical direction according to the principle of leverage. With such an easy operation, even if it is a weak force, the pulling force of the brake wire is amplified and the other end of the brake wire is pulled more efficiently, so the driver does not need to have a grip and is weak. A strong braking action can be realized by the easy operation of pushing only by force.

  This braking operation is the same principle as a so-called well water pulley, that is, the same principle as pulling a rope manually when pulling up a bucket in the case of a well water pulley, as shown in FIG. 1 (a) By the extremely simple operation of pushing down the operating lever of the operating unit 3 only in the X direction, the force pushing down the operating lever with the central axis of the handle 100 as the fulcrum becomes the force point, and the brake wire 200 follows the lever principle. As shown in FIG. 1 (b), this is an excellent mechanism in which a long distance is strongly pulled along the oval (direction A) on the winding unit 2 and a strong braking force can be obtained.

  With respect to the operation of winding up the brake wire 200, first, as shown in FIG. 1 (c), from the initial state in which the brake wire 200 is hanging down, as shown in FIG. 1 (d), the brake wire 200 is In addition to receiving a force that is pushed up in the A direction and a force that the brake wire 200 is lowered in the downward direction (direction B) by its own weight, the traveling path of the brake wire 200 is combined with the winding portion 2. The oval shape C is formed along the oval slope of the winding portion 2. Furthermore, as shown in FIG. 1E, the elliptical slope of the winding portion 2 is crawled up, and as a result, the traveling direction of the brake wire 200 maintains a stable elliptical shape C.

As described above, the operation of the brake wire 200 has a curved shape in which the distance from the center of the cross section circle of the through hole continuously changes from the small diameter to the large diameter by the configuration in which the operation of the brake wire 200 proceeds along the elliptical shape. Since the other end side of the brake wire 200 is wound along the curved shape, as shown in FIG. 2A and FIG. As the other end is wound up, the winding radius is initially small (position D ₁ ), so that the small diameter (R ₁ ) causes the brake to work gently and gradually (position D ₂ to D ₃ ) by radius continuously changes to larger diameter (R ₂ from R _3), the brake becomes to act sharply, with initially the brake, it is possible to perform efficient braking operation with a smaller force, blurring In the second half of the key operation, since it is possible to perform robust brake, it is possible to perform a gentle brake smoothly used selectively in a strong braking, the high safety braking operation more convenient.

  Moreover, as shown to Fig.3 (a), the fixing | fixed part 1 may equip the inner wall surface 11 with the notch part 11b which notched a part of this inner wall surface 11. As shown in FIG. As shown to Fig.3 (a), the inner wall surface 11 of a brake apparatus equips the notch part 11b as a cavity. When the other end of the brake wire 200 is introduced into the inside of the outer wall surface 12 through the introduction port 14 by the notch 11b, the notch 11b firmly fixes the brake wire 200, and the introduction Work can be made easier.

  The brake device 10 is fixed to the end of the handle 100 of the bicycle, as shown in FIG. 4, and the other end of the brake wire 200 can be fixedly attached. Moreover, it can also be made detachable from the handle 100. By pushing the operating lever, a tensile force of the brake wire 200 can be caused to cause a braking action on the bicycle wheel.

  Further, the elliptical shape of the winding unit 2 is not limited to being attached to the above-described outer wall surface 12 side, and in addition to this, it may be attached to the inner wall surface 11 side as shown in FIG. It is possible.

  Also in this case, as described above, as shown in FIG. 5A, the control lever is operated with the central axis of the handle 100 as a fulcrum by an extremely simple operation of only pushing the control lever of the operation unit 3 in the X direction. The pressing force is the point of force, and the brake wire 200 can be strongly pulled a long distance along the oval (direction A) on the winding unit 2 as shown in FIG. 5 (b) according to the lever principle. It is an excellent mechanism that a strong braking force can be obtained.

  Furthermore, as described above, as shown in FIG. 2, the winding unit 2 is formed in a curved shape in which the distance from the cross-sectional circle center of the through hole continuously changes from the small diameter to the large diameter. Since the other end side of the brake wire 200 is wound along the curved shape, as the other end side of the brake wire 200 is wound by the winding unit 2, the winding radius is gentle because the winding radius is initially small. The brake acts and the winding radius gradually changes to the large diameter gradually, so that the brake acts sharply, and in the initial stage of the braking, efficient braking operation can be performed with a smaller force. At the same time, in the second half of the braking operation, since it is possible to perform strong braking, it is possible to use gentle braking and strong braking smoothly, and it is more convenient and safer. It is possible to perform the braking operation.

  From such a configuration, when the bicycle driver depresses the projecting control lever in the operation unit 3, the other end of the brake wire 200 is pulled, and the driver does not need to have a grip. A firm braking operation can be realized by the easy operation of pushing only. In addition to depressing the operation lever as described above, it is possible to push up the operation lever during the braking operation, and it is possible to design according to the application.

  In this way, the driver can easily perform the brake operation while holding the steering wheel and driving the bicycle, and at the beginning of the brake operation, the gentle braking action is exhibited and the force is applied to the brake operation. The strong braking action is gradually exerted, and the braking action with higher operability can be obtained than the conventional brake in which the braking force is simply increased linearly.

  The brake device may be configured such that the take-up unit 2 is fixed to the hollow portion, but in addition, the take-up unit 2 can be pivoted to the hollow portion. It is also possible to be stored.

  As described above, since the winding unit 2 rotatably winds the other end side of the brake wire 200 at the time of the braking operation, along with the braking operation, from the center of the cross section circle of the through hole. The other end of the brake wire 200 is wound along a continuously changing curve shape (for example, an elliptical shape) whose diameter changes more smoothly and dynamically from small diameter to large diameter. It is possible to use brakes more smoothly and more safely by making it possible to use smooth braking in the second half of the braking operation more smoothly as well as moderate braking.

  The outline of the brake operation by the brake device of the present embodiment will be described with reference to FIG. As shown in the cross-sectional view of FIG. 6A, in the configuration provided with the wire groove 12a for winding the wire 200 (fixed by the Tyco 201) so as to be sandwiched by the outer wall surface 12, the wire 200 (TYCO 201). 6 (c) is wound from the initial state shown in FIG. 6 (b), as shown in FIG. 6 (c), as the wire 200 is wound up to 45 °, By winding up in a range where the inner diameter is small among the oval shapes of the part 2, the brake acts with a relatively gentle force, and as shown in FIG. 6 (d), when the wire 200 is rolled up to 90 °. On the other hand, the winding portion 2 is wound up in a range in which the inner diameter is large among the oval shapes of the winding portion 2, and the brake acts with a relatively strong force, so that a smooth and safe brake mechanism is realized.

  In addition, the wire 200 fixed by the Tyco 201 as described above is not limited to the case hanging down directly below, and the wire 200 may be drawn out from just beside the Tyco 201.

  For example, as shown in the cross-sectional view of FIG. 7A, in the configuration provided with the wire groove 12a for winding the wire 200 (fixed by the Tyco 201) so as to be sandwiched by the outer wall surface 12, As shown in FIG. 7 (c), the wire 200 pulled out from just beside is wound up in the brake operation by depressing the operation lever of the operation unit 3 from the initial state shown in FIG. 6 (b). As the wire 200 is wound up to 45 °, the brake can be applied stepwise by being wound up while the inner diameter is gradually expanded from a range where the inner diameter is small to a large range of the oval shape of the winding part 2 On the other hand, as shown in FIG. 7 (d), by pushing up the control lever of the control unit 3, it is wound up in the downward direction by the braking operation. As the wire 200 is wound up to 45 °, the brake is acted on in a stepwise manner by being wound up while the inner diameter is gradually expanded from the range where the inner diameter is small to the large range among the oval shapes of the winding portion 2 be able to.

  As described above, it is also possible to realize a smooth and safe brake mechanism not only by moving the control lever downward or upward but also by moving the control lever up and down.

Second Embodiment
The brake device according to the second embodiment is composed of the fixing portion 1, the winding portion 2, and the operation portion 3 as in the first embodiment described above, and is further shown in FIG. As described above, the auxiliary fixing portion 21 for winding the other end side of the brake wire 200 is provided at the front stage of the winding portion 2.

  A pulley can be used as the auxiliary fixing portion 21. The end on the other end side of the brake wire 200 can be fixed to one point of the wire fixing portion 22 disposed on the curved shape (elliptical shape) of the winding portion 2.

  Although FIG. 8 conceptually shows the wire fixing portion 22 for fixing the wire 200 by using (black dots), it is of course also included to fix the wire 200 using the Tyco 201, and further, Fixing the wire 200 by means other than Tyco 201 is also included.

  Thus, after the auxiliary fixing portion 21 once winds the other end side of the brake wire 200, the auxiliary fixing portion 21 sends out the other end side of the brake wire 200 to the winding portion 2, so that the auxiliary fixing portion 21 Function to absorb the shake motion (noise) of the brake wire 200 that occurs naturally during bicycle travel, to suppress the load applied to the brake device, and to properly perform only the desired brake motion. As a result, the braking force can be propagated to the winding unit, and a braking operation that is more efficient, convenient, and highly safe can be realized.

Third Embodiment
The brake device according to the third embodiment includes the fixing portion 1, the winding portion 2, the auxiliary fixing portion 21, and the operation portion 3 as in the second embodiment. Further, the winding unit 2 is rotatably accommodated in the hollow portion.

  In the brake device, as shown in FIG. 9A, when the brake wire 200 is wound up in the X direction, the brake wire 200 is once wound up by the auxiliary fixing portion 21 as shown in FIG. 9B. At the same time, the winding unit 2 has a two-stage winding configuration in which the brake wire 200 is wound up while rotating the hollow portion.

  In FIG. 9, although the wire fixing portion 22 for fixing the wire 200 is conceptually shown by using (black point), it is of course also included to fix the wire 200 using the Tyco 201, and further, Fixing the wire 200 by means other than Tyco 201 is also included.

  As described above, in the braking operation, after temporarily winding the other end side of the brake wire 200 by the auxiliary fixing portion 21, the other end side of the brake wire 200 is delivered to the winding portion 2, and Since the take-up unit 2 rotatably takes up the other end of the brake wire 200, the shake operation (noise) of the brake wire 200 that naturally occurs while the bicycle is traveling is accompanied by the brake operation. A curved shape (for example, an ellipse) in which the diameter of the through hole from the center of the cross section of the through hole continuously and smoothly changes from small diameter to large diameter while absorbing the load on the brake device In accordance with the shape), the other end side of the brake wire 200 will be wound up, and at the beginning of the braking operation a gentle braking is applied and in the latter half of the braking operation a strong Distinguish that over key is effective against is, while suppressing an excessive vibration applied to the brake wire 200, and more smoothly performed, it is possible to perform highly safe braking operation more convenient.

Fourth Embodiment
The brake device according to the fourth embodiment is constituted by the fixed portion 1, the winding portion 2, and the operation portion 3 as in the above embodiments, and further, the handle end On the side, the terminal fixing portion 4 connected to the fixing portion 1 is provided.

  The material for the end fixing portion 4 is not particularly limited, and various synthetic resins and metals can be used. For example, a plastic cap can be used. Preferably, an aluminum material is used. It is a cap, more preferably a cap of anodized aluminum material.

  Since this end fixing portion 4 is attached to the handle end side, it can also be called an end bar, and as shown in FIG. 10 (a), a space at the handle end side of the fixing portion 1 is used. As shown to 10 (b), it is the structure connected with the said fixing | fixed part 1. FIG.

  As shown in FIG. 11 (a), the driver operates while holding the end fixing portion 4 (end bar) during driving, and when applying a brake, as shown in FIG. 11 (b). While holding the end fixing portion 4, a reliable and smooth braking operation can be realized only by the operation of tilting the thumb ball (depressing with the thumb ball) of the end fixing portion 4.

  In addition to the fact that the operation lever of the operation unit 3 moves up and down in the fixed state as described above with respect to the slit 13, as shown in FIG. 11 (c), the operation lever itself rotates. In this case, the operating lever can be depressed at an angle which is more easily depressed by the thumb ball, and the driver's braking operation can be performed more easily.

  As described above, since the end fixing portion 4 is connected to the fixing portion 1, the thumb ball of the palm holding the end fixing portion 4 by holding the end fixing portion 4 and performing a handle operation. Can be used to move the operating lever of the operating unit 3 up and down (while holding the end fixing portion 4), and it is possible to simply and surely simply tilt the thumb ball of the hand holding the handle as it is. Can realize easy brake operation.

  Furthermore, since the end fixing portion 4 is provided, the operation of the operation lever of the operation unit 3 can be fixed more firmly, and the brake operation can be performed more stably without requiring a strong force such as a grip force. It can be performed.

  As described above, in the brake device according to each of the above embodiments, since the position of the operation lever is disposed on the thumb side of the driver, a strong grip is not necessary, and it is easy to simply press the operation lever with the thumb. With this operation, it is possible to use the brakes that are gentle at the beginning of the braking operation and to use the strong braking more smoothly in the latter half of the braking operation, and to perform the braking operation with more convenience and safety. It is possible to realize a firm and stable braking operation which has not been achieved in the past.

DESCRIPTION OF SYMBOLS 1 fixed part 11 inner wall surface 11a Tyco storage part 11b Notch part 12 outer wall surface 12a wire groove 13 slit 14 introduction port 2 winding part 21 auxiliary fixed part 22 wire fixed part 3 operation part 4 auxiliary fixed part 100 handle 200 brake wire 201 Tyco

Claims (4)

A brake device attached to the left and right handlebars of a bicycle, which is connected to the other end of a brake wire whose one end is fixed to a brake mechanism disposed in the vicinity of a wheel, and the other end of the brake wire is pulled. In the brake device that performs the braking operation on the wheel by the brake mechanism,
A cylindrical inner wall surface forming a cylindrical through hole inside, a cylindrical outer wall surface accommodating the inner wall surface in a separated state, and a slit in which a part of the outer wall surface is opened along the circumferential direction And a fixing portion configured to receive and fix the handle in the through hole.
The through hole is accommodated in a hollow portion formed between the inner wall surface and the outer wall surface, and the diameter from the center of the cross section of the through hole is formed in a curved shape continuously changing from a small diameter to a large diameter, A winding unit for winding the other end of the brake wire along a curved shape;
An operation unit connected to the winding unit via the slit and formed from a projecting operation lever having mobility along the slit;
A brake device comprising: In the brake device according to claim 1,
The winding device is rotatably accommodated in the hollow portion. Brake device. In the brake device according to claim 1 or 2,
An auxiliary fixing portion which winds the other end side of the brake wire is provided at a front stage of the winding portion. In the brake device according to any one of claims 1 to 3.
A brake device comprising a terminal fixing portion connected to the fixing portion on the handle end side.

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