TWI547408B - Brake automatically adjustment apparatus - Google Patents

Description

Brake automatic adjustment device

The invention relates to a brake automatic adjusting device, in particular to an automatic adjusting device for automatically adjusting the length of the brake wire of the drum brake to adjust the distance between the brake shoe and the brake drum.

The conventional drum brake has a good self-tapping effect, and under the condition of generating the same braking torque, the diameter of the drum of the drum brake can be much smaller than the diameter of the brake disc of the disc brake, and the drum brake has the parts. The low cost and convenient maintenance make the drum brakes widely used in the braking system of automobiles, locomotives, bicycles or other vehicles.

It is worth noting that the drum brake is easy to wear the brake shoe with the increase of the number of brakes, which makes the distance between the brake shoe and the brake drum wide, and the brake line used to drive the brake shoe must be pulled longer. The distance can make the brake shoe contact the friction brake drum. In other words, the stroke of the user pulling the brake lever or stepping on the brake pedal must be extended to obtain the same braking force as before the brake shoe is not worn.

In detail, please refer to FIG. 1 , which is a conventional drum brake device 8 , which comprises a brake handle 81 , a brake unit 82 and a brake line 83 . The brake line 83 is connected to the brake handle 81 and a screw respectively. 831. The brake unit 82 includes a swing arm 821 pivotally connected to the screw 831 and positioned through a nut 822. The nut 822 is screwed to the screw 831. Thereby, when the user pulls the brake handle 81, the brake wire 83 connected to the brake handle 81 is driven together, so that the nut 822 screwed to the screw 831 follows The brake wire 83 is displaced and pressed against the swing arm 821. Therefore, the swing arm 821 extends the driveable shoe (not shown) outward to press against the brake drum mounted on the wheel of the vehicle, thereby generating Driving force.

As the use time increases, the brake shoe is gradually worn, so that the distance between the brake shoe and the brake drum is enlarged, so that the stroke of the user must pull the brake handle 81 must be extended, so that the brake shoe and the brake drum can be made. Contact occurs to produce a braking effect. Accordingly, the conventional drum brake device 8 needs to manually rotate the nut 822, forcing the swing arm 821 to move toward the brake line 83 to slightly open the brake shoe, so that the brake shoe and the brake drum are The spacing is formed at the same level as before the brake shoe has not worn to maintain the braking effect of the conventional drum brake device 8.

However, for users who are unfamiliar with the maintenance of the vehicle, the nut 822 is usually adjusted by the professional maintenance personnel, so that the swing arm 821 cannot be tightly adjusted through the nut 822 after the brake shoe system is worn out. In order to make the vehicle's braking force insufficient, the braking distance is greatly increased, which seriously jeopardizes the driving safety of the vehicle. Moreover, in order to avoid the above situation, the maintenance personnel frequently rotate the nut 822 for the user to reduce the distance between the brake shoe and the brake drum to be small, so that the conventional drum brake device 8 is in the brake shoe. It can still maintain a certain braking effect after wear. However, if the distance between the brake shoe and the brake drum is too small, the brake operation may be too sensitive. Once the user accidentally touches the brake handle 81, unpredictable braking behavior may occur (for example, the tire locks and slips). accident.

In order to solve the above problem, please refer to FIG. 2 , which is a conventional brake automatic adjusting device 9 , which can be applied to the conventional drum brake device 8 . The conventional brake automatic adjusting device 9 includes a touch switch 91 and a power source. 92 a gear set 93 and a control unit 94. The trigger switch 91 is connected to the brake handle 81; the power source 92 is fixed to the swing arm 821 of the brake unit 82; the gear set 93 includes a first gear member 931 and a second gear member 932 that mesh with each other. The first gear member 931 is coupled to the power source 92 and directly receives the power The second gear member 932 is coupled to the nut 822 of the brake unit 82, and the second gear member 932 and the nut 822 are integrally connected to each other in a state of being integrally linked. The control unit 94 is coupled to the touch switch 91 and the power source 92 respectively. An embodiment of the conventional brake automatic adjusting device 9 has been disclosed in the Patent Case No. 549283 of the Republic of China, "Motorcycle Brake Electric Automatic Compensation Device".

By setting the conventional brake automatic adjusting device 9, when the brake shoe wears and the distance between the brake shoe and the brake drum is enlarged, the user pulls the brake handle 81 to extend the stroke, so that the touch switch 91 is pressed, and The control unit 94 coupled to the touch switch 91 activates the power source 92. The power source 92 drives the first gear member 931 to rotate, thereby driving the second gear member 932 and the nut 822 to rotate together to force the The swing arm 821 moves toward the brake line 83 to slightly open the brake shoe, so that the distance between the brake shoe and the brake drum forms the same level as before the brake shoe has not worn. Accordingly, the conventional brake automatic adjusting device 9 can maintain a constant value of the distance between the brake shoe and the brake drum of the drum brake, and effectively control the variation range of the braking effect of the conventional drum brake device 8.

However, the conventional brake automatic adjusting device 9 needs to use electronic components such as the touch switch 91, the power source 92, and the control unit 94, so that it has the disadvantages of high cost, high failure rate, and difficulty in maintenance, and is low in cost and easy to maintain. The important advantage of the drum brake is that setting the conventional brake automatic adjustment device 9 will greatly reduce the market value of the drum brake, which obviously does not meet the needs of the industry. In addition, the power source 92 must be fixed to the swing arm 821 of the brake unit 82. In fact, the space for accommodating the power source 92 is not reserved in the brake system of the existing vehicle, and the swing arm 821 of the existing vehicle is not provided. The corresponding joint portion can be assembled by the power source 92. In other words, the conventional brake automatic adjusting device 9 cannot be applied to a commercially available vehicle, and cannot be sold separately for the user to purchase and install, and the scope of application is severely limited. Moreover, the conventional brake adjusting device 9 also needs to install the touch switch 91 at the position of the brake handle or the brake pedal, and couple the control unit 94 to the touch switch 91 and the power source 92 by wires respectively, so that the conventional brake is used. Automatic tuning The entire device 9 is difficult to apply to a locomotive or bicycle in which the vehicle body space is limited.

In summary, the automatic brake adjustment device 9 has "cost too high" and "suitable" Disadvantages such as narrow range, there is a need to provide a further improved brake automatic adjustment device for installation in a conventional drum brake device for maintaining the distance between the brake shoe and the brake drum of the drum brake device. It ensures the driving effect of the conventional drum brake device and effectively improves the driving safety of the vehicle.

An object of the present invention is to provide an automatic brake adjusting device for mounting on a drum brake device, wherein the brake automatic adjusting device comprises a connecting rod, a first adjusting member, a second adjusting member, a fork and a fork a bracket, when the brake shoe of the brake device is excessively worn, the distance that the link, the first adjusting member and the second adjusting member are pulled is increased, and the fork is rotated relative to the connecting rod, forcing the first adjusting member Rotating to reduce the distance between the first adjusting member and the second adjusting member, the length of the brake wire can be automatically adjusted, so that the distance between the brake shoe and the brake drum of the drum brake device is kept constant, without the brake shoe The wear causes a change in the pitch, ensuring the braking effect of the drum brake device, and has the effect of improving the driving safety of the vehicle.

A further object of the present invention is to provide an automatic brake adjusting device, which can be connected to a brake wire and a brake wire of a brake device via the connecting rod and the second adjusting member respectively. Among the brake devices, the distance between the brake shoe and the brake drum of the brake device is controlled to improve the range of application.

In order to achieve the foregoing object, the technical means for the present invention include: a brake automatic adjusting device, comprising: a connecting rod, one end of the connecting rod forming a connecting member for coupling a brake line, the connecting rod is provided with a connecting rod a first adjusting member, the first adjusting member is rotatably coupled to the connecting rod, and the first adjusting member is further provided with a gear and a first thread portion; and a second adjusting member is provided with a a second threaded portion, the second threaded portion is screwed to the first threaded portion, and the second adjusting member is further provided with a connecting member for coupling a brake wire; a shifting fork comprising a first joint portion, a second joint portion and an end portion, the first joint portion is coupled to the connecting rod, and the back pressure spring abuts the first joint portion to The joint portion is pressed toward the outer surface of the connecting rod; and a bracket is provided with a slide rail, and the second joint portion of the shift fork is movably coupled to the slide rail, the end portion is disposed toward the gear .

In the brake automatic adjusting device of the present invention, the slide is a long groove, the link has an axial direction, and the slide is not parallel to the axial direction of the link.

The brake automatic adjusting device of the present invention further comprises a body, and an outer surface of the second adjusting member forms a plane or other non-circular surface, and the seat abuts the outer surface of the second adjusting member.

In the brake automatic adjusting device of the present invention, the end of the fork is positioned in one of the slots of the gear.

In the brake automatic adjusting device of the present invention, the connecting rod is further provided with a pull-back spring, and the pull-back spring is respectively connected to the connecting rod and the shifting fork.

The brake automatic adjusting device of the present invention, wherein the connecting rod opens an opening, the opening is opened at the other end of the connecting rod away from the connecting member, the first adjusting member is provided with a cylinder, and the cylindrical body extends through the opening In the link.

In the brake automatic adjusting device of the present invention, the first threaded portion is an external thread, and the second threaded portion is an internal thread.

In the brake automatic adjusting device of the present invention, a housing interior defines an accommodating space for accommodating the brake automatic adjusting device, and the housing is provided with a fixing portion for fixing the housing to a vehicle.

The brake automatic adjusting device of the present invention further includes an abrasion amount warning module, wherein the wear amount warning module comprises a sensing unit, a baffle and a warning unit, and the sensing unit is coupled to the second adjusting member The baffle is coupled to the first adjusting member, and the sensing unit is disposed opposite to the baffle in an axial direction of the connecting rod, and the warning unit is coupled to the sensing unit.

The brake automatic adjusting device of the present invention, wherein one end of the bracket is provided with a slideway, one end of the bracket is movably coupled to the slide rail for adjusting the angle between the slide rail of the bracket and the axial direction of the connecting rod .

〔this invention〕

1‧‧‧Automatic brake adjustment device

11‧‧‧ Connecting rod

111‧‧‧Connecting parts

112‧‧‧ openings

113‧‧‧Return spring

114‧‧‧Retraction spring

12‧‧‧First adjustment

121‧‧‧Cylinder

122‧‧‧ Gears

122a‧‧ ‧ cogging

122a’‧‧‧ cogging

123‧‧‧First threaded part

13‧‧‧Second adjustment

131‧‧‧Second thread

132‧‧‧Connecting parts

133‧‧‧ outer surface

14‧‧‧ fork

14a‧‧‧ first joint

4b‧‧‧Second junction

141‧‧‧End

15‧‧‧ bracket

151‧‧‧Slide

152‧‧ ‧ chute

16‧‧‧ body

17‧‧‧Abrasion warning module

171‧‧‧Sensor unit

172‧‧ ‧ baffle

173‧‧‧ warning unit

2‧‧‧煞车线

21‧‧‧煞Handle

3‧‧‧Shell

31‧‧‧ Fixed Department

B‧‧‧ brake device

B1‧‧‧ brake wire

[study]

8‧‧‧Used drum brake device

81‧‧‧煞车把手

82‧‧‧ brake unit

821‧‧‧ swing arm

822‧‧‧ nuts

83‧‧‧煞车线

831‧‧‧ screw

9‧‧‧Used car automatic adjustment device

91‧‧‧Touch switch

92‧‧‧Power source

93‧‧‧ Gear Set

931‧‧‧First gear

932‧‧‧second gear parts

94‧‧‧Control unit

Figure 1 is a schematic view of a conventional drum brake device.

Figure 2 is a schematic view of a conventional brake automatic adjusting device.

Figure 3 is a schematic view showing the appearance of an embodiment of the present invention.

Figure 4 is a schematic exploded view of an embodiment of the present invention.

Figure 5 is a schematic cross-sectional view showing an embodiment of the present invention.

Figure 6 is a partially enlarged schematic view of an embodiment of the present invention.

Figure 7 is a partial cross-sectional view showing an embodiment of the present invention.

Figure 8 is a schematic view showing the use of the handlebar of the handlebar according to an embodiment of the present invention.

Fig. 9 is a partially enlarged schematic view showing the smaller hand pull amount of the handlebar according to an embodiment of the present invention.

Figure 10 is a partial cross-sectional view showing the handlebar handlebar of the embodiment of the present invention having a smaller hand pull amplitude.

Fig. 11 is a partially enlarged schematic view showing the larger range of the handlebar movement of the handlebar according to an embodiment of the present invention.

Figure 12 is a partial cross-sectional view showing a larger range of hand-operated handlebars according to an embodiment of the present invention.

Figure 13 is a partial cross-sectional view showing the brake automatic adjusting device of the embodiment of the present invention when the brake shoe is excessively worn and the link is released.

Figure 14 is a cross-sectional view showing another embodiment of an embodiment of the present invention.

Fig. 15 is a cross-sectional view showing the arrangement of two automatic brake adjusting devices of the embodiment of the present invention in a casing.

The above and other objects, features and advantages of the present invention will become more apparent and obvious. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Referring to Figures 3 and 4, the brake automatic adjusting device 1 according to an embodiment of the present invention is automatically adjusted. The device 1 includes a connecting rod 11 , a first adjusting member 12 and a second adjusting member 13 . The first adjusting member 12 is coupled to the connecting rod 11 and the second adjusting member 13 respectively.

One end of the connecting rod 11 forms a connecting member 111, and the connecting member 111 can be used for knotting One of the brake lines 2, one end of the brake line 2 can be combined with a handlebar 21, which can be controlled by a user to drive the brake line 2 to expand and contract; however, the brake line 2 is combined with the brake handle 21 The structure can also be combined with the brake pedal or other structure that can control the braking line 2, and the invention is not limited thereto.

The first adjusting member 12 is rotatably coupled to the connecting rod 11 in the embodiment. The opening of the connecting rod 11 is preferably open to the other end of the connecting member 111. The first adjusting member 12 is provided with a cylinder 121. The opening 112 extends through the connecting rod 11 such that the first adjusting member 12 can stably rotate relative to the connecting rod 11. However, the first adjusting member 12 can be rotatably coupled to the connecting rod 11 via various conventional pivoting structures, and the invention is not limited thereto.

The first adjusting member 12 is further provided with a gear 122 and a first thread portion 123. The second adjusting member 13 is provided with a second threaded portion 131 , and the second threaded portion 131 is screwed to the first threaded portion 123 . In this embodiment, the first threaded portion 123 is an external thread, and the second threaded portion 131 is an internal thread. However, the first and second threaded portions 123 and 131 can also be internally and externally threaded, respectively. Anyone having ordinary knowledge in the field to which the present invention pertains can be easily considered. The second adjusting member 13 is further provided with a connecting member 132 for coupling with a brake wire B1 of a braking device B, and an outer surface 133 of the second adjusting member 13 is formed into a plane or other non-circular surface. Wherein, the braking device B can be a conventional drum brake, and the braking device B can be connected via a brake wire B1 is coupled with the connecting member 132 of the second adjusting member 13. When the braking wire B1 is pulled by the connecting member 132 of the second adjusting member 13, the brake shoe that can drive the braking device B is opened to make it The friction of the brake drum produces a braking effect.

In addition, the brake automatic adjusting device 1 is further provided with a fork 14 and a fork The frame 15 and the body 16 include a first joint portion 14a and a second joint portion 14b. The first joint portion 14a is coupled to the connecting rod 11, and the connecting rod 11 is provided with a back pressure spring 113. The back pressure spring 113 abuts the first joint portion 14a to press the first joint portion 14a toward the outer surface of the connecting rod 11. The shift fork 14 further has an end portion 141 facing the end portion The gear 122 of the first adjusting member 12 is disposed; the bracket 15 is provided with a slide 151, and the second joint portion 14b of the shifting fork 14 is movably coupled to the slide 151; the seat 16 abuts the first The outer surface 133 of the second adjusting member 13 is in surface contact with the outer surface 133. Since the outer surface 133 is formed into a plane or other non-circular surface, the seat body 16 is in surface contact with the outer surface 133 to limit the The second adjustment member 13 can only slide in the axial direction of one of the links 11; in other words, the second adjustment member 13 will not be rotatable relative to the link 11. In the embodiment, the slide 151 is a long slot, and the slide 151 is not parallel to the axial direction of the link 11, and the angle between the slide 151 and the axial direction of the link 11 can be Adjust according to design needs. However, the slide 151 may also be an elliptical groove, a ring groove, or an irregular hole.

Please refer to Figures 5, 6 and 7 when the user has not pulled the handlebar. At 21 o'clock, the brake line 2 does not exert a pulling force on the connecting rod 11, and the connecting rod 11 will be in a fixed position, and the end portion 141 of the shifting fork 14 is positioned in one of the slots of the gear 122. Among the 122a.

Please refer to Figures 8, 9 and 10, if the brake shoe of the brake device B is not Wear occurs, that is, when the distance between the brake shoe and the brake drum of the brake device B is normal, when the user pulls the brake handle 21 to pull the brake wire 2, the linkage 11 of the brake automatic adjustment device 1 is driven. The first adjusting member 12 and the second adjusting member 13 are along the axial direction of the connecting rod 11 Moving toward the brake wire 2, since the first joint portion 14a of the fork 14 is coupled to the link 11, the fork 14 will also move toward the first pivot portion 11a along the axial direction of the link 11. . The second joint portion 14b of the shift fork 14 will slide in the slide rail 151. Since the slide rail 151 is a long slot that is not parallel to the axial direction of the connecting rod 11, the shift fork 14 will Rotation with respect to the link 11 causes the end portion 141 to be displaced and slightly raised in a direction away from the gear 122. In this case, the amplitude of the shifting fork 14 relative to the link 11 is relatively small, so that the end portion 141 is also lifted to a lesser extent and will remain positioned in the slot 122a. Accordingly, once the user releases the brake handle 21, the link 11 will return to the fixed position without any influence on the brake automatic adjustment device 1.

However, please refer to Figures 11 and 12, if the brake device B is smashed When the distance between the brake shoe and the brake drum is increased, when the user continues to pull the brake handle 21 to pull the brake wire 2, the brake automatic adjustment device 1 will be driven. The rod 11, the first adjusting member 12 and the second adjusting member 13 are moved together along the axial direction of the connecting rod 11 toward the braking line 2, and the connecting rod 11, the first adjusting member 12 and the second adjusting member 13 are The pulling distance will be longer than in the foregoing case, so that the amplitude of the rotation of the shifting fork 14 relative to the connecting rod 11 is increased, so that the end portion 141 is lifted away from the gear 122 and disengaged from the tooth groove 122a.

Referring to FIG. 13 again, the connecting rod 11 is provided with the back pressure spring 113 to The first joint portion 14a of the shifting fork 14 is pressed toward the outer surface of the connecting rod 11, so that when the end portion 141 is disengaged from the tooth groove 122a, it will be pressed by the back pressure spring 113 to be positioned with the tooth. The slot 122a is adjacent to the other slot 122a'. Accordingly, once the user releases the brake handle 21, the link 11 will return to the fixed position, and the end portion 141 will be pressed in the direction of the gear 122, thereby pressing the gear 122 to rotate the angle of the single tooth groove. The end portion 141 is formed to be positioned in the other tooth groove 122a'. The first adjusting member 12 is synchronously rotated with the gear 122, and the first threaded portion 123 of the first adjusting member 12 is screwed to the second thread of the second adjusting member 13. The portion 131 is abutted against the outer surface 133 of the second adjusting member 13 to restrict the second adjusting member 13 from sliding only in the axial direction of the connecting rod 11, so the second adjusting member 13 cannot rotate with the first adjustment member 12. Therefore, the first threaded portion 123 will pivot relative to the second threaded portion 131, thereby reducing the distance between the first adjusting member 12 and the second adjusting member 13, so that the braking line 2 and the braking device B are braked. The distance of the wire B1 is shortened, and the effect of automatically adjusting the length of the brake wire B1 is generated to compensate for the expansion of the distance between the brake shoe and the brake drum of the brake device B, so that the brake shoe of the brake device B and the brake drum are fixed. Pitch.

Therefore, it can be seen that the brake automatic adjusting device 1 of the embodiment of the present invention can When the vehicle shoe of the vehicle device B is excessively worn, the distance by which the link 11, the first adjusting member 12, and the second adjusting member 13 are pulled is increased, and the fork 14 is rotated relative to the connecting rod 11 to cause the end portion 141. Lifting and disengaging the slot 122a, and positioning the end portion 141 with the other slot 122a' adjacent to the slot 122a by the back pressure spring 113, so that after the user releases the brake handle 21, The shift fork 14 can force the gear 122 to rotate to maintain a constant distance between the brake shoe and the brake drum of the brake device B. Accordingly, the automatic brake adjusting device of the embodiment of the present invention can maintain the fixed distance between the brake shoe and the brake drum of the brake device B, so that the braking force of the brake device B is not affected by the wear of the brake shoe, and the brake is ensured. The braking effect of the device B does have the effect of improving the driving safety of the vehicle.

Furthermore, the brake automatic adjusting device 1 can be connected via the connecting rod 11 The brake wire B1 is coupled to the brake wire B1 of the brake device B via the connecting piece 132 of the second adjusting member 13, so that the user can control the brake device B via the brake handle 21 combined with the brake wire 2. Acting. In other words, the brake automatic adjusting device 1 is connected to the brake wire 2 and the brake wire B1 via the connecting rod 11 and the second adjusting member 13 respectively, and is installed in the braking device B, thereby controlling the braking device. The distance between the car blade and the brake drum of B. Accordingly, the brake automatic adjusting device 1 can be applied to a drum type brake system of a commercially available vehicle, and the power source 92 must be fixed compared to the conventional brake automatic adjusting device 9. The swing arm 821 of the conventional drum brake device 8 makes it unsuitable for use in a commercially available vehicle. The brake automatic adjusting device 1 of the embodiment of the present invention does have the effect of improving the applicable range.

On the other hand, the connecting rod 11 is preferably further provided with a pull-back spring 114, and the pull-back spring The spring 114 is connected to the connecting rod 11 and the shifting fork 14, respectively. When the shifting fork 14 rotates relative to the connecting rod 11, the pull-back spring 114 will be forced to extend. Thereby, when the end portion 141 is pressed downward in the direction of the gear 122, the restoring force of the pull-back spring 114 can increase the pressure under the end portion 141, ensuring that the end portion 141 can force the gear 122 to rotate, avoiding the The rotation speed of the shift fork 14 is insufficient to cause the gear 122 to be unable to rotate normally. In addition, the brake automatic adjusting device of the embodiment of the present invention is provided with a casing 3 for providing component support, dustproof, waterproof and protection functions. The interior of the casing 3 forms an accommodating space for accommodating the brake automatic adjusting device 1 . The brake wire 2 and the brake wire B1 of the brake device B can be inserted through the casing 3 to respectively engage the brake automatic adjusting device 1 , and the bracket 15 and the seat 16 of the brake automatic adjusting device 1 can be fixed to the casing Within the perimeter of the wall. The housing 3 can be provided with a fixing portion 31. The fixing portion 31 can be a conventional fixing structure such as a seat hole, a locking point or a card slot for the user to fix the housing 3 to a frame of a vehicle or Other body parts.

Please refer to FIG. 14 , which is a brake automatic adjusting device according to an embodiment of the present invention. In another embodiment, an alarming warning module 17 is further provided. The warning module 17 includes a sensing unit 171, a baffle 172 and a warning unit 173. The sensing unit 171 can be coupled to the sensing unit 171. The second adjusting member 13 is coupled to the first adjusting member 12, and the sensing unit 171 is disposed opposite to the baffle 172 along an axial direction of the connecting rod; the warning unit 173 is coupled The sensing unit 171. In detail, the sensing unit 171 can be a conventional sensing device such as a micro switch, a proximity switch, or an electromagnetic switch, and the sensing unit 171 is preferably coupled to the side of the second adjusting member 13 away from the connecting member 132. The baffle 172 is preferably coupled between the gear 122 of the first adjustment member 12 and the first threaded portion 123.

As the user uses the brake device B for a long time, the fork 14 will continue to be forced Rotating the gear 122 to drive the first threaded portion 123 to pivot relative to the second threaded portion 131, thereby reducing the distance between the first adjusting member 12 and the second adjusting member 13 to maintain the brake shoe of the brake device B The distance from the brake drum is constant. Under the action of the automatic adjustment mechanism, when the wear amount of the brake shoe of the brake device B increases, the distance between the first adjustment member 12 and the second adjustment member 13 must be With the decrement, the distance between the brake shoe and the brake drum of the brake device B can be effectively compensated. Therefore, by providing the above-mentioned wear amount warning module 17, when the brake shoe of the brake device B is completely worn out, the distance between the first adjusting member 12 and the second adjusting member 13 is greatly reduced, so that the sensing is performed. The unit 171 is capable of contacting the flap 172. Thereby, the sensing unit 171 can send a signal to the alert unit 173 to control the alert unit 173 to generate an alert message. In detail, the warning unit 173 can be coupled to the driving computer or the instrument panel of the vehicle. Therefore, when the sensing unit 171 contacts the blocking piece 172, the warning unit 173 can send a warning light or warning sound to the user. The warning message is used to remind the user that the brake shoe of the brake device B has been completely worn out, and it is not necessary to replace the brake shoe as soon as possible to maintain the braking effect of the brake device B.

On the other hand, one end of the bracket 15 can be provided with a sliding slot 152. The sliding slot 152 is preferably an arcuate slot, and one end of the bracket 14 is movably coupled to the sliding slot 152 for adjusting the bracket 15 One of the ends is in the position in the chute 152 and is fixed. Accordingly, the angle between the guide rail 151 of the bracket 15 and the axial direction of the connecting rod 11 can be adjusted by the sliding slot 152.

Referring to FIG. 15 , two brake automatic adjusting devices 1 of the embodiment of the present invention can be simultaneously disposed in the housing 3 , wherein the connecting members 111 of the connecting rods 11 of the automatic braking device 1 can be combined with two Similarly, the connecting member 131 of the second adjusting member 13 of the second automatic adjusting device 1 is combined with the braking wire B1 of the second braking device B, respectively. Thereby, the two-car automatic adjustment device 1 can respectively control the distance between the brake shoe and the brake drum of the two brake device B, so as to be applicable to vehicles with multiple brake devices B, such as locomotives, bicycles or automobiles, which are more than two wheels. Among them, it is easy for those who have ordinary knowledge in the field to which the present invention pertains Think about it.

In summary, the automatic brake adjusting device of the embodiment of the present invention can be applied to an automobile, a locomotive, a bicycle or other various vehicles, and the length of the brake wire of the brake device is automatically adjusted to adjust the shoe and the brake of the brake device. The spacing of the drums achieves the effects of improving the safety of the vehicle and improving the range of functions of the automatic adjustment device of the brakes.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Automatic brake adjustment device

11‧‧‧ Connecting rod

111‧‧‧Connecting parts

112‧‧‧ openings

113‧‧‧Return spring

114‧‧‧Retraction spring

12‧‧‧First adjustment

121‧‧‧Cylinder

122‧‧‧ Gears

123‧‧‧First threaded part

13‧‧‧Second adjustment

131‧‧‧Second thread

132‧‧‧Connecting parts

133‧‧‧ outer surface

14‧‧‧ fork

14a‧‧‧ first joint

14b‧‧‧Second junction

141‧‧‧End

15‧‧‧ bracket

151‧‧‧Slide

16‧‧‧ body

2‧‧‧煞车线

3‧‧‧Shell

31‧‧‧ Fixed Department

B1‧‧‧ brake wire

Claims (10)

The utility model relates to an automatic adjusting device for braking, which is used for automatically adjusting the length of the brake wire of a braking device. The automatic adjusting device of the braking device comprises: a connecting rod, one end of the connecting rod forms a connecting piece for coupling a connecting line, the connecting rod The first adjusting member is rotatably coupled to the connecting rod, and the first adjusting member is further provided with a gear and a first threaded portion; and a second adjusting member is disposed. a second threaded portion is provided, the second threaded portion is screwed to the first threaded portion, and the second adjusting member is further provided with a connecting member for coupling the brake wire of the braking device; a fork, the fork includes a first joint portion, a second joint portion and an end portion, the first joint portion is coupled to the connecting rod, and the back pressure spring abuts the first joint portion to face the first joint portion toward the connecting rod The outer surface is extruded; and a bracket is provided with a slide, and the second joint of the fork is movably coupled to the slide, the end being disposed toward the gear. The brake automatic adjusting device according to claim 1, wherein the slide is a long groove, the link has an axial direction, and the slide is not parallel to the axial direction of the link. The brake automatic adjusting device according to claim 1, wherein the bracket further comprises a body, and an outer surface of the second adjusting member forms a plane or other non-circular surface, and the seat abuts the second adjustment. The outer surface of the piece. The brake automatic adjusting device according to claim 1, wherein the end of the fork is positioned in one of the slots of the gear. The brake automatic adjusting device according to claim 1, wherein the connecting rod is further provided with a pull-back spring, and the pull-back spring is respectively connected to the connecting rod and the shifting fork. The automatic adjusting device for the brake car according to the first aspect of the invention, wherein the connecting rod defines an opening, the opening is open at the other end of the connecting rod away from the connecting member, and the first adjusting member is provided with a cylinder, The cylinder extends through the opening through the connecting rod. The brake automatic adjusting device according to claim 1, wherein the first threaded portion is an external thread, and the second threaded portion is an internal thread. The automatic adjusting device for the brakes according to any one of the preceding claims, wherein the inside of the casing forms an accommodating space for accommodating the automatic adjusting device for the brake, the casing is provided with a fixing portion. This is used to fix the housing to a vehicle. The brake automatic adjustment device according to any one of claims 1 to 7, wherein an abrasion amount warning module is further provided, the wear amount warning module comprises a sensing unit, a baffle and a warning unit. The sensing unit is coupled to the second adjusting member, the baffle is coupled to the first adjusting member, and the sensing unit is disposed opposite to the baffle in an axial direction of the connecting rod, the warning unit is The sensing unit is coupled. The brake automatic adjusting device according to claim 2, wherein one end of the bracket is provided with a slide, one end of the bracket is movably coupled to the slide rail for adjusting the slide rail of the bracket and the joint The angle between the axial direction of the rod.