KR200470449Y1 - Apparatus for self-adjusting tension of a brake cable and brake apparatus using it - Google Patents

Abstract

An automatic tensioning device for a brake cable and a brake device using the same are provided. According to one or more embodiments of the present invention, an apparatus for automatically adjusting tension of a brake cable may include: a housing forming a through hole at a center thereof, and forming a punching hole perpendicular to the through hole; A pair of coupling grooves coupled by a pair of rear cables, forming a through hole between the pair of coupling grooves, and forming a through hole perpendicular to the through hole to form a drilling hole and a connection pin of the housing. An equalizer connected by; A rod installed in the through hole of the housing and the through hole of the equalizer, the rod having a plurality of teeth in the longitudinal direction on both sides of an outer circumferential surface thereof; An elastic member connected to the housing to move the housing by an elastic force; A pair of adjustment poles rotatably mounted on both sides of the housing, the pair of adjusting poles being engaged with the teeth of the rod to fix the housing moved by the elastic member; And a return spring that provides an elastic force for repositioning the adjustment pole changed by rotation.

Description

Apparatus for self-adjusting tension of a brake cable and brake apparatus using it}

The present invention relates to a device for automatically adjusting a tension of a brake cable for automatically adjusting the tension of a brake cable, and a brake device using the same. Relates to a device.

In general, a vehicle includes a hand brake or a side brake used to stop or park a vehicle in addition to a foot brake that stops or slows down the vehicle. This is called a parking brake device.

The parking brake device performs a function of keeping the vehicle in a stopped state, and serves to brake the front wheel or the rear wheel of the vehicle to maintain the parking state of the vehicle. For example, the parking brake may include a brake drum, a shoe and a spring, and the parking brake shoe may be in close contact with the parking brake drum to brake the wheels of the vehicle.

In general, the operation of the parking brake device can be achieved by the driver operating the lever of the parking brake. For example, when the driver pulls the lever of the parking brake, the cable of the parking brake is pulled to brake the wheel of the vehicle. In contrast, releasing the lever releases the cable of the parking brake and releases the brake on the wheel of the vehicle. You can.

Since the operation and release of the parking brake device is performed every time the vehicle is parked, it may be repeated until the life of the vehicle is reached. Each time the parking brake is actuated, the cable of the parking brake will be loosened by a certain repeated tensile force, permanent deformation by excessive tension, permanent deformation by fatigue for a long time, durability deterioration, etc. Can be.

If you operate the parking brake with the cable loosened, you will have to pull the lever of the parking brake more than before. As such, as the cable is loosened, the stroke of the brake lever becomes long, and when the cable is stretched more than a predetermined level, the performance of the parking brake may not be substantially performed.

Thus, a serious safety problem may occur if the parking brake device fails to perform the function of keeping the vehicle parked. For example, if a parking brake device of a vehicle parked on an inclined road surface or inclined residential area loses function by loosening cables, the parked vehicle may slide down the inclined road surface. As a result, a vehicle collision, human injury, and the like may occur.

In order to solve this problem, a tension adjusting device for adjusting the tension of the cable is adopted. Conventional tension control device is designed to increase or decrease the tension of the cable by turning the tension adjusting nut in one direction to adjust the tension of the cable.

1 is a schematic perspective view of a conventional cable tensioning device. Conventional cable tension adjusting device (1) is applied to the nut (5) for adjusting the tension of the cable, the front cable (3) for transmitting the force applied from the parking brake lever (2), and the front cable (3) It consists of an equalizer 4 for transmitting the losing force and two rear cables 6 for transmitting the force transmitted through the equalizer 4 to the brake drum.

However, in the conventional cable tension adjusting device, since the tension of the cable must be adjusted by manual labor, it is difficult to adjust the tension and the work time is long, resulting in a problem of deterioration of the work efficiency.

Therefore, there is a need for a device and a brake device capable of automatically and constantly adjusting the tension of the cable so that the parking brake can brake the wheels of the vehicle even if the length of the cable varies. In addition, there is a need for a device for automatically adjusting the tension of the brake cable, which can be connected to the foot brake in addition to the parking brake.

The problem to be solved by the present invention is to provide a device for automatically adjusting the tension of the brake cable to automatically adjust the tension of the cable so that the tension of the brake cable is kept constant in a predetermined range.

In addition, the problem to be solved by the present invention is to provide a brake device using the automatic tension device of the brake cable that can continuously perform the function of the parking brake by automatically pulling the cable when the brake cable is extended.

In addition, the problem to be solved by the present invention is to provide a device for automatically adjusting the tension of the brake cable to automatically adjust the tension of the brake cable compatible with the foot brake in addition to the parking brake.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned may be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a device for automatically adjusting a tension of a brake cable, the housing including a through hole at the center and a perforated hole perpendicular to the through hole; A pair of coupling grooves coupled by a pair of rear cables, forming a through hole between the pair of coupling grooves, and forming a through hole perpendicular to the through hole to form a drilling hole and a connection pin of the housing. An equalizer connected by; A rod installed in the through hole of the housing and the through hole of the equalizer, the rod having a plurality of teeth in the longitudinal direction on both sides of an outer circumferential surface thereof; An elastic member connected to the housing to move the housing by an elastic force; A pair of adjustment poles rotatably mounted on both sides of the housing, the pair of adjusting poles being engaged with the teeth of the rod to fix the housing moved by the elastic member; And a return spring that provides an elastic force for repositioning the adjustment pole changed by rotation.

In order to achieve the above object, a brake device according to an embodiment of the present invention, a cable inner connected from the brake assembly; A pair of rear cables connected from the brake drum; And an automatic adjustment of the tension of the brake cable for transmitting an operation according to the driving of the brake assembly to the brake drum through the cable inner and the pair of rear cables, and adjusting the tension of the cable inner and the pair of rear cables. And a module, wherein the automatic tension control module of the brake cable comprises: a housing forming a through hole at the center thereof and forming a perforated hole perpendicular to the through hole; A pair of coupling grooves coupled by the pair of rear cables, forming a through hole between the pair of coupling grooves, and forming a through hole perpendicular to the through hole to connect with the drilling tool of the housing. An equalizer connected by pins; A rod installed in the through-hole of the housing and the through-hole of the equalizer, having a hollow formed therein, and having a plurality of teeth in the longitudinal direction on both sides of an outer circumferential surface thereof; An elastic member connected to the housing to move the housing by an elastic force; A pair of adjustment poles rotatably mounted on both sides of the housing, the pair of adjusting poles being engaged with the teeth of the rod to fix the housing moved by the elastic member; And a return spring that provides an elastic force for repositioning the adjustment pole changed by rotation.

Other specific details of the present invention are included in the detailed description and drawings.

Even if the cable is stretched, the cable is automatically pulled to maintain the cable tension within a predetermined range, so that the adjustment work for adjusting the cable tension can be omitted, and the cable tension can be adjusted accurately.

In addition, since the tension of the cable is automatically maintained within a predetermined range, it is possible to reliably operate the parking brake and to improve the stability of the vehicle driver.

In addition, foot brakes as well as parking brakes can be connected to the device that automatically adjusts the tension of the cable to improve the compatibility of the device, the simple structure of the device can prevent malfunction and failure, and reduce the production cost .

1 is a schematic perspective view of a conventional cable tensioning device.
2 is an external perspective view of a device for automatically adjusting tension of a brake cable according to an exemplary embodiment of the present invention.
3 is an internal perspective view of a device for automatically adjusting tension of a brake cable according to an exemplary embodiment of the present invention.
4 is a plan view of a device for automatically adjusting tension of a brake cable according to an exemplary embodiment of the present invention.
5 is a plan view of a rod that is an element of the automatic tension control device of the brake cable according to an embodiment of the present invention.
6 is a perspective view of a hand brake device using a device for automatically adjusting tension of a brake cable according to an embodiment of the present invention.
7 is a perspective view of a foot brake device using the automatic tension device for adjusting the brake cable according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. Is provided to fully inform the owner of the category of design, and the design is only defined by the scope of the claim. Like reference numerals refer to like elements throughout.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. It is, of course, also possible that the first element, the first element or the first section mentioned below may be a second element, a second element or a second section within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms "comprises" and / or "made of" means that a component, step, operation, and / or element may be embodied in one or more other components, steps, operations, and / And does not exclude the presence or addition thereof.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is an external perspective view of the automatic tension device of the brake cable according to an embodiment of the present invention, Figure 3 is an internal perspective view of the automatic tension device of the brake cable according to an embodiment of the present invention, Figure 4 A plan view of a device for automatically adjusting tension of a brake cable according to an embodiment of the present invention.

2 to 4, the device 100 for automatically adjusting the tension of the brake cable according to an embodiment of the present invention includes a housing 106, an equalizer 105, a rod 101, an elastic member 103, And a pair of adjustment poles 108 and a return spring 109. In addition, the apparatus 100 for automatically adjusting the tension of the cable may further include a holder 102, a fixing ring 107, and a cable inner 110.

The housing 106 serves to support the various components. The housing 106 forms a through hole in the center, and forms a punched hole perpendicular to the through hole.

In addition, the equalizer 105 has a pair of coupling grooves 115 to which a pair of rear cables 125 are coupled, and forms a through hole between the pair of coupling grooves 115 and the through hole. Perforations are formed at right angles to the perforations of the housing 106 and are connected by connecting pins 104. Here, the rear cable 125 may be provided with a head 126 to be inserted into the coupling groove 115 formed at both ends of the equalizer 105 so as not to be separated. The head 126 has a cross-sectional area wider than that of the rear cable 125 so that the head 126 can be easily detached from the defect groove 115. The opposite side of the rear cable 125 that is not fitted into the coupling groove 115 is connected to a brake drum (not shown).

That is, the rear cable 125 is connected to the equalizer 105 and the brake drum of the vehicle wheel, and transmits a brake command according to the movement of the equalizer 105 to the brake drum. The rear cable 125 is a pair and is connected to both wheels of the vehicle at a predetermined length, respectively. For example, rear cables 125 may be connected to one coupling hole 115 formed at both ends of the equalizer 105 so as to closely contact the parking brake shoes with the drums of the right and left wheels of the vehicle.

The connecting pin 104 is fastened to the drilling tool of the housing 106 and the drilling hole of the equalizer 105 so that the housing 106 and the equalizer 105 are connected, and the connecting pin 104 is inserted vertically, It acts as an anchor.

The rod 101 is installed in the through hole of the housing 106 and the through hole of the equalizer 105, and includes a plurality of teeth 111 in the longitudinal direction on both sides of the outer circumferential surface. That is, the rod 101 is inserted into the through hole of the housing 106 and the through hole of the equalizer 105. Here, the plurality of tooth teeth 111 may be symmetrically located on both sides of the outer peripheral surface of the rod 101, or may be asymmetrically located. The advantages thereof will be described below. In addition, a hollow may be formed in the longitudinal direction inside the rod 101, and the cable inner 110 may be inserted into the hollow. Here, the cable inner 110 includes a flexible portion so that both ends of the cable inner 110 can be bent freely when the rod 101 and the brake assembly are connected to each other, thereby improving convenience of connection. Therefore, when using the cable inner 110, there is an advantage that the foot brake can be used as well as the hand brake as the brake assembly.

In addition, the elastic member 103 is fitted to the rod 101, one end is connected to one side of the housing 106 serves to move the housing 106 by the elastic force. 2 to 4, one end of the elastic member 103 can be seen that the other end is connected to the holder 102. Since the elastic member 103 connected to the holder 102 is fixed, the elastic force of the elastic member 103 acts on the housing 106 side. Thus, when the rear cable 125 connected to the defect groove 115 of the equalizer 105 is stretched, the elastic member 103 provides an elastic force toward the housing 106 to move the housing 106.

The fixing ring 107 may further include a fixing ring 107 which fixes the holder 102 holding the elastic member 103 to provide an elastic force by the elastic member 103 to the housing 106. That is, the fixing ring 107 serves to fix the elastic member 103 and the holder 102. As an example of the fixing ring 107, an e-ring may be used to fit the rod 101 to fix the elastic member 103 and the holder 102.

And, a pair of adjustment poles 108 are mounted on both sides of the housing 106 so as to be rotatable, and the housing 106 is engaged with the teeth 111 of the rod 101 and moved by the elastic member 103. Fix it. As shown in FIG. 4, the adjusting pawl 108 has protrusions engaged with the teeth 111 of the rod 101 in one region. When the rear cable 125 connected to the defect groove 115 of the equalizer 105 is extended, the elastic member 103 provides an elastic force toward the housing 106 to move the housing 106, and the adjusting pole 108. Protrusions are engaged with the teeth 111 of the rod 101 to prevent movement of the housing 106.

Then, the return spring 109 provides an elastic force for repositioning the adjusting pole 108 changed by the rotation. The return spring 109 is connected to both ends of the housing 106 and the adjusting pole 108, respectively. When the housing 106 is moved, the projection of the adjusting pole 108 is engaged with the engaging teeth 111 of the rod 101 so that the tension of the rear cable 125 is maintained, and the return spring 109 is the adjusting pole 108. It provides an elastic force in the opposite direction of rotation of the housing 106 to prevent movement of the housing 106 and rotation of the adjustment pole 108. That is, the return spring 109 serves to provide a force for engaging the teeth 111 of the rod 101 and the projection of the adjusting pawl 108. Since the return spring 109 should provide a twisting elastic force, a torsion spring or the like may be used.

Here, the plurality of tooth teeth 111 may be symmetrically located on both sides of the outer peripheral surface of the rod 101, or may be asymmetrically located.

5 is a plan view of a rod that is an element of the automatic tension device for adjusting the brake cable according to an embodiment of the present invention, a plurality of teeth 111 provided on both sides of the rod 101 in Figure 5 is asymmetrically Are arranged.

In FIG. 5, when the distance between the tooth teeth 111 arranged on one side is D, it can be seen that the tooth teeth 111 facing the other side are spaced apart from the tooth teeth 111 by D / 2. That is, the plurality of tooth teeth 111 positioned on both sides of the outer circumferential surface of the rod 101 may be arranged such that the centers of the tooth teeth 111 facing each other are spaced apart from each other by a predetermined distance, and the spaced predetermined distances may be adjacent to each other. It may be 1/2 of the distance between the centers of the two tooth teeth (111).

When both teeth of the rod 101 are staggered, a pair of adjustment poles 108 can be engaged in order, respectively, so that the rotation of the equalizer 105 is caused by the difference in the length of the pair of rear cables 125. Interference between the equalizer 105 and the return spring 109 can be prevented. In addition, when both teeth are symmetrically arranged, the movement of the housing 106 is more precisely possible than the movement of the housing 106 depends only on the distance between the teeth 111, so that the rear cable 125 It is possible to control the pitch more precisely. That is, by arranging the teeth of the rod 101 staggered, the tension of the rear cable 125 can be adjusted more precisely.

Looking at the operation of the automatic tension device 100 of the brake cable with reference to Figure 4, the initially installed rear cable 125 is in equilibrium, the rear cable 125 is stretched according to the use of the vehicle. . When the tension of the rear cable 125 is loosened, the housing 106 moves in the direction of the arrow A by the elastic member 103, and the adjustment pole 108 on both sides of the housing 106 moves in accordance with the movement of the housing 106. The projection of is engaged with the teeth of the rod 101 is fixed. Both teeth of the rod 101 are engaged with the projections of the pair of adjustment poles 108, respectively, in which case the adjustment poles 108 are engaged in order when both teeth of the rod 101 are arranged alternately. That is, when both teeth of the rod 101 are arranged alternately with each other, the adjusting pole 108 is engaged in order, so that the equalizer 105 and the adjusting pole when the equalizer 105 is rotated by the length difference of the rear cable 125. 108) interference can be prevented. Thereafter, the return spring 109 provides the adjustment pole 108 with an elastic force opposite to the moving direction of the housing 106 to fix the housing 106 or the like.

6 is a perspective view of a hand brake device using a device for automatically adjusting a tension of a brake cable according to an embodiment of the present invention, and FIG. 7 is a foot brake device using a device for automatically adjusting a tension of a brake cable according to an embodiment of the present invention. Perspective view.

The brake devices 10 and 11 using the automatic tension adjustment device of the brake cable include a cable inner 110 connected from the brake assemblies 200 and 300 and a pair of rear cables 125 connected from a brake drum (not shown). And the operation according to the driving of the brake drum to the brake drum through the cable inner 110 and the pair of rear cables 125, and the cable inner 110 and the pair of rear cables ( 125, the automatic tension control module 100 of the brake cable for adjusting the tension of the.

Here, the automatic tension control module 100 of the brake cable is the automatic tension control device 100 of the brake cable described above. That is, the automatic tension control module 100 of the brake cable, the through-hole is formed in the center, the housing 106 to form a punching hole perpendicular to the through-hole, the pair of rear cable 125 is coupled A pair of coupling grooves 115 are provided, and a through hole is formed between the pair of coupling grooves 115, and a perforation hole is formed perpendicularly to the through hole to connect with the drilling tool of the housing 106. It is installed in the equalizer 105 connected by the pin 104, the through-hole of the housing 106 and the through-hole of the equalizer 9120, a hollow is formed inside, a plurality of teeth in the longitudinal direction on both sides of the outer peripheral surface. A rod 101 having a 111, an elastic member 103 connected to the housing 106 to move the housing 106 by elastic force, and rotatably mounted on both sides of the housing 106, respectively. And the tooth is engaged with the tooth 111 of the rod 101 A pair of adjustment poles 108 for holding the housing 106 moved by the member 103, and a return spring 109 for providing an elastic force for repositioning the adjustment poles 108 changed by rotation. can do.

As described above, the rear cable 125 is connected to the equalizer 105 and the brake drum (not shown) of the vehicle wheel, and transmits a brake command according to the movement of the equalizer 105 to the brake drum (not shown). Do it. The rear cable 125 may be formed in a pair, and may be connected to both wheels of the vehicle with a predetermined length, respectively. For example, the rear cables 125 may be connected to one coupling hole 115 formed at both ends of the equalizer so as to closely contact the parking brake shoes with the drums of the right and left wheels of the vehicle.

Cable inner 110 serves to connect between the automatic tension control module 100 and the brake assembly (200, 300) of the brake cable. The cable inner 110 is pulled or relaxed according to the operation of the brake assemblies 200 and 300 to advance or reverse the automatic tension adjusting module 100 of the brake cable. One end of the cable inner 110 may be fixed to the automatic tension control module 100 of the brake cable, and the other end may be fixed to the brake assemblies 200 and 300 by known coupling means.

The rod 101 provided in the automatic tension control module 100 of the brake cable may have a hollow, and the cable inner 110 may be connected to the hollow. In addition, the cable inner 110 may include a flexible portion, and may be freely bent when the rod 101 and the brake assemblies 200 and 300 are connected to each other. Accordingly, even in a narrow space, the rod 101 and the brake assemblies 200 and 300 may be connected through the cable inner 110. Therefore, the cable inner 110 is connected to one end of the rod 101 and can be connected to the parking brake lever of various packages, and furthermore, the cable inner 110 can be connected to the brake pedal. That is, the brake devices 10 and 11 using the automatic tension device for the brake cable are compatible with the foot brake device 11 as well as the hand brake device 10. Thus, at least one of the hand brake assembly 200 or the foot brake assembly 300 may be connected to the brake assemblies 200 and 300. 6 shows a hand brake device 10 using the automatic tension device 100 of the brake cable, and FIG. 7 shows a foot brake device 11 using the automatic tension device 100 of the brake cable. have.

In FIG. 6, the hand brake assembly 200 serves to pull or relax the cable inner 110 connected by the user to pull or relax the brake lever. For example, when the hand brake assembly 200 is placed after the brake lever is pulled by the user, the hand brake assembly 200 stops while the cable inner 110 is pulled out by the operation of the cable tension adjustment module 100. When the user lowers the brake lever while pressing a predetermined button of the brake lever, the cable inner 110 may relax and the parking brake state may be released.

In FIG. 7, similar to the hand brake assembly 200, the cable inner 110 and the rear cable 125 may be tensioned by the foot brake assembly 300 through the automatic cable tension adjusting module 100. do.

Therefore, the flexible cable inner 110 is connected to one end of the cable tension automatic adjustment module 100 so as to be compatible with various hand brake assemblies 200 and foot brake assemblies 300, thereby automatically tensioning cables. It is possible to adjust the brake device (10, 11).

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may realize the present invention in other specific forms without changing its technical spirit or essential features. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: tensioning device of cable
101: load
102: holder
103: elastic member
104: connecting pin
105: equalizer
106: housing
107: retaining ring
108: adjusting pole
109: return spring
110: cable inner
200: hand brake assembly
300: foot brake assembly

Claims (11)

A through hole formed at a center thereof and forming a perforated hole perpendicular to the through hole;
A pair of coupling grooves coupled by a pair of rear cables, forming a through hole between the pair of coupling grooves, and forming a through hole perpendicular to the through hole to form a drilling hole and a connection pin of the housing. An equalizer connected by;
A rod installed in the through hole of the housing and the through hole of the equalizer, the rod having a plurality of teeth in the longitudinal direction on both sides of an outer circumferential surface thereof;
An elastic member connected to the housing to move the housing by an elastic force;
A pair of adjustment poles rotatably mounted on both sides of the housing, the pair of adjusting poles being engaged with the teeth of the rod to fix the housing moved by the elastic member; And
A return spring that provides an elastic force for repositioning the adjustment pole changed by rotation;
A plurality of teeth located on both sides of the outer circumferential surface of the rod tooth automatic adjustment device of the tension of the brake cable spaced apart from each other by the center of the tooth teeth facing each other. The method of claim 1,
The plurality of toothed teeth automatically adjusting the tension of the brake cable which is located symmetrically on both sides of the outer peripheral surface of the rod. delete The method of claim 1,
And the spaced predetermined distance is one half of the distance between the centers of two adjacent teeth. The method of claim 1,
And a holder for holding the elastic member to provide the elastic force by the elastic member to the housing side. 6. The method of claim 5,
Device for automatically adjusting the tension of the brake cable further comprises a fixing ring for fixing the elastic member and the holder. The method of claim 1,
The rod automatically adjusts the tension of the brake cable to form a hollow therein. 8. The method of claim 7,
Device for automatically adjusting the tension of the brake cable further comprises a cable inner inserted into the hollow. A cable inner connected from the brake assembly;
A pair of rear cables connected from the brake drum; And
The automatic tension control module of the brake cable for transmitting the operation according to the driving of the brake assembly to the brake drum through the cable inner and the pair of rear cables, and adjusts the tension of the cable inner and the pair of rear cables Including;
The automatic tension control module of the brake cable,
A through hole formed at a center thereof and forming a perforated hole perpendicular to the through hole;
A pair of coupling grooves coupled by the pair of rear cables, forming a through hole between the pair of coupling grooves, and forming a through hole perpendicular to the through hole to connect with the drilling tool of the housing. An equalizer connected by pins;
A rod installed in the through-hole of the housing and the through-hole of the equalizer, having a hollow formed therein, and having a plurality of teeth in the longitudinal direction on both sides of an outer circumferential surface thereof;
An elastic member connected to the housing to move the housing by an elastic force;
A pair of adjustment poles rotatably mounted on both sides of the housing, the pair of adjusting poles being engaged with the teeth of the rod to fix the housing moved by the elastic member; And
A return spring that provides an elastic force for repositioning the adjustment pole changed by rotation;
A plurality of teeth located on both sides of the outer circumferential surface of the rod which is a brake device in which the center of the teeth facing each other spaced a predetermined distance apart. The method of claim 9,
And the cable inner includes a flexible portion connecting the brake assembly and the rod. The method of claim 10,
Said brake assembly being a hand brake assembly or a foot brake assembly.

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