Brake cable regulator

Abstract

The utility model discloses a brake cable regulator, and relates to the technical field of brake cable regulation. The device comprises an adjusting box and a box cover, a two-way lead screw is connected in the adjusting box, a worm gear and a threaded block are connected to the outer surface of the two-way lead screw, a tensioning wheel is connected to the top of the threaded block through a fixing rod, and a guide rail is installed in the adjusting box. Through the arrangement of the pull ring, the rotary drum, the first limiting teeth and the second limiting teeth, when the tensioning of the brake cable is adjusted, a worker pulls the pull ring to drive the sleeve to move upwards and compress the spring, the sleeve is driven to rotate through the engagement of the first limiting teeth and the second limiting teeth and the rotation of the pull ring, and under the cooperation of the first limiting teeth and the second limiting teeth, the tension of the brake cable is adjusted. The worm drives the worm gear to rotate, so that the two-way lead screw drives the two threaded blocks to move oppositely or reversely, the distance between the two tensioning wheels is adjusted, and the purpose of freely adjusting the tensioning degree of the brake cable is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake cable adjusting technical field, concretely is a brake cable adjuster. BACKGROUND

[0002] The brake system of the bicycle is to reduce the speed of the bicycle or prevent it from moving; when braking, when the brake handle is pinched with fingers, the brake cable will pull the brake pad to make the brake pad move to the wheel rim, contact the wheel rim to generate dynamic friction, and force the vehicle to brake; the tightness of the brake cable determines the sensitivity of the bicycle brake, so when the sensitivity of the bicycle brake needs to be adjusted, the tightness of the brake cable needs to be adjusted.

[0003] Through the search, a brake cable adjuster with the application number 202223501634.4 is found, the device drives the limiting plate to move by adjusting the movement of the push plate, and then drives the brake inner core to move, then pulls the brake inner core to be in a tight state, the limiting plate can better control and adjust the position of the brake inner core, so that the brake cable can be more conveniently adjusted in a tight state without tools, and the riding safety of the bicycle is improved, although the device can tension the brake cable to a certain extent, but since the position of the limiting plate is fixed, the tensioning degree of the brake cable can only be tightened and cannot be loosened, the tensioning degree cannot be freely controlled, and the tensioning degree may be adjusted too much, which has certain limitations. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a brake cable adjuster to solve the technical problems in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a brake cable adjuster, which comprises an adjusting box and a box cover, the inside of the adjusting box is connected with a bidirectional screw rod, the outer surface of the bidirectional screw rod is connected with a worm gear and a threaded block, the top of the threaded block is connected with a tensioning wheel through a fixed rod, the inside of the adjusting box is installed with a guide rail, the lower part of the inside of the adjusting box is connected with a worm, the top of the worm is installed with a first limiting tooth through a limiting disc, the inside of the box cover is connected with a rotating drum, the top of the rotating drum is connected with a pull ring, the lower part of the outer surface of the rotating drum is connected with a supporting disc, the top of the supporting disc is installed with a spring between the box cover, and the inside of the rotating drum is installed with a second limiting tooth.

[0006] Further, the adjusting box is provided with an entry port and an exit port.

[0007] Through the above technical scheme, when installing, the staff puts one end of the brake cable into the adjusting box through the entry port, puts the brake cable into the two tensioning wheels respectively, and then leaves from the exit port and is fixed, the box cover is fixed by screwing the bolt, and the installation is completed.

[0008] Further, the rotating drum is movably connected with the box cover, and the rotating drum penetrates through the bottom of the box cover.

[0009] By adopting the above technical scheme, when the brake cable tension is adjusted, the staff pulls the pull ring to drive the sleeve to move upwards and compress the spring, the first limiting tooth is engaged with the second limiting tooth, the pull ring is rotated to drive the sleeve to rotate forward or reversely, the worm drives the worm gear to rotate under the cooperation of the first limiting tooth and the second limiting tooth, so that the bidirectional screw rod drives the two threaded blocks to move oppositely or reversely, the distance between the two tension pulleys is adjusted, and the purpose of adjusting the tension of the brake cable is achieved.

[0010] Further, the worm gear is engaged with the worm, and the worm is rotatably connected with the adjusting box.

[0011] By adopting the above technical scheme, under the driving of the sleeve, the worm gear drives the bidirectional screw rod to rotate through the engagement of the worm and the worm gear, the two threaded blocks drive the tension pulleys to move through the guidance and limiting of the guide rail, the distance between the two tension pulleys is adjusted, the adjusted position is self-locked and fixed through the cooperation of the worm gear and the worm, and the bidirectional screw rod is prevented from rotating by itself.

[0012] Further, the threaded block is in the shape of "T" in the longitudinal section, and the threaded block is slidably connected with the guide rail.

[0013] By adopting the above technical scheme, when the tension pulley is adjusted, the threaded block bottom slides in the guide rail, the threaded block is guided and limited by the guide rail, and the threaded block is prevented from rotating with the bidirectional screw rod, so that the practicability of the device is affected.

[0014] Further, the tension pulley is provided with two groups, and the two groups of tension pulleys are symmetrically distributed.

[0015] By adopting the above technical scheme, when the brake cable tension is adjusted, the threaded block drives the two groups of tension pulleys to move oppositely or reversely under the driving of the bidirectional screw rod, the distance between the two groups of tension pulleys is expanded or reduced, and the effect of adjusting the brake cable tension is achieved.

[0016] Further, the first limiting tooth is engaged with the second limiting tooth, and the longitudinal sections of the first limiting tooth and the second limiting tooth are both in the shape of triangle.

[0017] By adopting the above technical scheme, the tooth surfaces of the first limiting tooth and the second limiting tooth are oppositely arranged, and the two inclined surfaces of the triangle of the first limiting tooth and the second limiting tooth can make the first limiting tooth and the second limiting tooth more easily engaged together when they are engaged.

[0018] Further, the supporting disc is rotatably connected with the rotating drum.

[0019] By adopting the above technical scheme, after the brake cable is adjusted, the pull ring is loosened, the sleeve is driven downward to the original position by the spring elastic force under the action of the support disc, the first limiting tooth is disengaged from the second limiting tooth, and the pull ring enters the inside of the box cover, so that the impact is avoided to cause the worm to rotate, and the practicability of the device is affected.

[0020] Further, one side of the adjusting box is connected with four guide rollers, two guide rollers form a group, and the guide rollers are rotationally connected with the adjusting box.

[0021] By adopting the above technical scheme, the outer surface of the guide roller is coated with an ultrahigh molecular weight polyethylene coating, the friction coefficient between the brake cable and the guide roller is reduced, the brake cable is guided by the guide roller, the brake cable does not contact the box wall at the inlet opening during use, and thus the friction is avoided to cause the brake cable and the adjusting box to be severely worn, and the service life of the brake cable and the adjusting box is prolonged.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The pull ring, rotating drum, first limiting tooth and second limiting tooth are arranged, when the brake cable is adjusted, the staff pulls the pull ring to drive the sleeve to move upward and compress the spring, the first limiting tooth is engaged with the second limiting tooth, the sleeve is rotated by rotating the pull ring, the worm is rotated by the cooperation of the first limiting tooth and the second limiting tooth, the bidirectional screw rod drives the two threaded blocks to move oppositely or reversely, the distance between the two tension pulleys is adjusted, and the purpose of freely adjusting the tension degree of the brake cable is achieved.

[0024] 2. The support disc and the spring are arranged, after the brake cable is adjusted, the pull ring is loosened, the sleeve is driven downward to the original position by the support disc under the action of the spring elastic force, the first limiting tooth is disengaged from the second limiting tooth, and the pull ring enters the inside of the adjusting box, so that the impact is avoided to cause the worm to rotate, and the practicability of the device is affected. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the utility model;

[0026] Figure 2 It is a sectional structure schematic view of the adjusting box of the utility model;

[0027] Figure 3 It is a sectional structure schematic view of the adjusting box of the utility model;

[0028] Figure 4 It is a sectional structure schematic view of the box cover of the utility model;

[0029] Figure 5 It is a sectional structure schematic view of the box cover of the utility model;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the rotating drum of this utility model.

[0031] In the diagram: 1. Adjustment box; 2. Box cover; 3. Cable inlet; 4. Cable outlet; 5. Guide rail; 6. Double-acting lead screw; 7. Threaded block; 8. Tensioning wheel; 9. Worm gear; 10. Worm; 11. Limiting plate; 12. First limiting tooth; 13. Rotary drum; 14. Second limiting tooth; 15. Support plate; 16. Spring; 17. Pull ring; 18. Guide roller. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] Example 1: A brake line adjuster, such as Figures 1-6 As shown, the device includes an adjustment box 1 and a cover 2. A bidirectional lead screw 6 is connected inside the adjustment box 1. A worm gear 9 and a threaded block 7 are connected to the outer surface of the bidirectional lead screw 6. A tensioning wheel 8 is connected to the top of the threaded block 7 via a fixing rod. A guide rail 5 is installed inside the adjustment box 1. A worm gear 10 is connected to the lower part of the adjustment box 1. A first limiting tooth 12 is installed on the top of the worm gear 10 via a limiting plate 11. A rotating cylinder 13 is connected inside the cover 2. A pull ring 17 is connected to the top of the rotating cylinder 13. A support plate 15 is connected to the lower part of the outer surface of the rotating cylinder 13. A spring 16 is installed between the top of the support plate 15 and the cover 2. A second limiting tooth 14 is installed on the lower part of the rotating cylinder 13. An inlet 3 and an outlet 4 are provided on one side of the adjustment box 1. During installation, the operator passes one end of the brake cable through the inlet 3 into the adjustment box 1, loops the brake cable through the two tensioning wheels 8, exits from the outlet 4 and fixes it, and then tightens the bolts to fix the cover 2, thus completing the installation.

[0035] See Figure 2 and Figure 4 In the above embodiment, the rotating drum 13 is movably connected to the cover 2, and the rotating drum 13 passes through the bottom of the cover 2. When adjusting the tension of the brake cable, the operator pulls the pull ring 17 to move the sleeve upward and compress the spring 16. The first limiting tooth 12 and the second limiting tooth 14 mesh. Rotating the pull ring 17 causes the sleeve to rotate forward or in the opposite direction. With the cooperation of the first limiting tooth 12 and the second limiting tooth 14, the worm 10 drives the worm wheel 9 to rotate, thereby causing the bidirectional lead screw 6 to drive the two threaded blocks 7 to move in opposite directions or in the opposite direction, adjusting the distance between the two tensioning wheels 8, thereby achieving the purpose of adjusting the tension of the brake cable.

[0036] Referring to Figure 2 And Figure 4 In the above embodiment, the worm wheel 9 is engaged with the worm 10, and the worm 10 is rotationally connected with the adjusting box 1. Under the driving of the sleeve, the worm wheel 9 drives the bidirectional screw rod 6 to rotate through the engagement of the worm wheel 9 and the worm 10, and the two threaded blocks 7 drive the tension pulleys 8 to move through the guidance and limiting of the guide rail 5, so that the interval between the two tension pulleys 8 is adjusted, and the adjusted position is self-locked through the cooperation of the worm wheel 9 and the worm 10, thereby avoiding the rotation of the bidirectional screw rod 6.

[0037] Referring to Figure 2 And Figure 3 In the above embodiment, the threaded block 7 is in the shape of "T" in the longitudinal section, and the threaded block 7 is slidingly connected with the guide rail 5. When adjusting the tension pulley 8, the bottom of the threaded block 7 slides in the guide rail 5, and the threaded block 7 is guided and limited by the guide rail 5, so as to avoid the threaded block 7 rotating with the bidirectional screw rod 6 and affecting the practicability of the device.

[0038] Referring to Figure 2 And Figure 3 In the above embodiment, the tension pulley 8 is provided with two groups, and the two groups of tension pulleys 8 are symmetrically distributed. When adjusting the tension of the brake line, the two groups of tension pulleys 8 are moved in opposite directions or in opposite directions under the driving of the bidirectional screw rod 6, so as to expand or reduce the interval between the two groups of tension pulleys 8, thereby achieving the effect of adjusting the tension of the brake line.

[0039] Referring to Figure 3 、 Figure 4 And Figure 6 In the above embodiment, the first limiting tooth 12 is engaged with the second limiting tooth 14, and the longitudinal sections of the first limiting tooth 12 and the second limiting tooth 14 are both in the shape of triangle. The tooth surfaces of the first limiting tooth 12 and the second limiting tooth 14 are reversely arranged, and the two inclined surfaces of the triangle of the first limiting tooth 12 and the second limiting tooth 14 can make the first limiting tooth 12 and the second limiting tooth 14 more easily engaged together when engaged.

[0040] Referring to Figure 2 、 Figure 4 、 Figure 5 And Figure 6 In the above embodiment, the support disc 15 is rotationally connected with the rotating drum 13. After the adjustment of the brake line is completed, the pull ring 17 is loosened, and under the elastic force of the spring 16, the support disc 15 drives the sleeve to move downward to the original position, so that the first limiting tooth 12 and the second limiting tooth 14 are disengaged, and at the same time, the pull ring 17 enters the inside of the box cover 2, thereby avoiding the impact of the worm 10 and affecting the practicability of the device.

[0041] Embodiment two: In order to avoid the brake line from being seriously rubbed with the adjusting box 1 during use, embodiment two is improved on the basis of embodiment one. Referring to Figure 2And Figure 3 The four guide rollers 18 are connected to the inside of the adjusting box 1, two rollers in each group, and the guide rollers 18 are rotatably connected to the adjusting box 1, the outer surface of the guide rollers 18 is coated with an ultra-high molecular weight polyethylene coating to reduce the friction coefficient between the brake cable and the guide rollers 18, and the guide rollers 18 guide the brake cable, so that the brake cable does not contact the box wall at the entry port 3 during use, thereby avoiding friction and causing the brake cable and the adjusting box 1 to wear severely, thereby prolonging the service life of the brake cable and the adjusting box 1.

[0042] The working principle of the utility model is as follows: when adjusting the tension of the brake cable, the staff pulls the pull ring 17 to drive the sleeve to move upwards, and the support disc 15 compresses the spring 16, when the first limiting tooth 12 and the second limiting tooth 14 are engaged, at this time, rotating the pull ring 17 drives the sleeve to rotate forward or reversely, under the cooperation of the first limiting tooth 12 and the second limiting tooth 14, the worm 10 drives the worm wheel 9 to rotate, so that the bidirectional screw rod 6 drives the two threaded blocks 7 to move oppositely or reversely, adjusts the distance between the two tensioning wheels 8, and the position of the tensioning wheel 8 after adjustment is self-locked by the cooperation of the worm wheel 9 and the worm 10, so as to complete the adjustment of the tensioning degree of the brake cable; after the brake cable is adjusted, the pull ring 17 is loosened, under the elastic force of the spring 16, the support disc 15 drives the sleeve to move downwards to the original position, so that the first limiting tooth 12 and the second limiting tooth 14 are disengaged, and at the same time, the pull ring 17 enters the inside of the box cover 2, avoiding knocking to cause the worm 10 to rotate.

[0043] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A brake cable adjuster comprising an adjuster housing (1) and a housing cover (2), characterized in that: The inside of the adjusting box (1) is connected with a bidirectional screw rod (6), the outer surface of the bidirectional screw rod (6) is connected with a worm wheel (9) and a threaded block (7), the top of the threaded block (7) is connected with a tensioning wheel (8) through a fixing rod, the inside of the adjusting box (1) is installed with a guide rail (5), the inside of the adjusting box (1) is connected with a worm (10) below, the top of the worm (10) is installed with a first limiting tooth (12) through a limiting disc (11), the inside of the box cover (2) is connected with a rotating drum (13), the top of the rotating drum (13) is connected with a pull ring (17), the outer surface of the rotating drum (13) is connected with a supporting disc (15) below, the spring (16) is installed between the top of the supporting disc (15) and the box cover (2), the inside of the rotating drum (13) is installed with a second limiting tooth (14) below.

2. A brake line adjuster according to claim 1, wherein: The adjusting box (1) is provided with an incoming line port (3) and an outgoing line port (4) on one side.

3. A brake line adjuster according to claim 1, wherein: The rotating drum (13) is movably connected with the box cover (2), and the rotating drum (13) penetrates the bottom of the box cover (2).

4. A brake line adjuster according to claim 1, wherein: The worm wheel (9) is engaged with the worm (10), and the worm (10) is rotatably connected with the adjusting box (1).

5. A brake line adjuster according to claim 1, wherein: The longitudinal section of the threaded block (7) is in the shape of "T", and the threaded block (7) is slidably connected with the guide rail (5).

6. A brake line adjuster according to claim 1, wherein: The tensioning wheel (8) is provided with two groups, and the two groups of tensioning wheels (8) are symmetrically distributed.

7. A brake line adjuster according to claim 1 wherein: The first limiting tooth (12) is engaged with the second limiting tooth (14), and the longitudinal sections of the first limiting tooth (12) and the second limiting tooth (14) are both in the shape of triangle.

8. A brake line adjuster according to claim 1, wherein: The supporting disc (15) is rotatably connected with the rotating drum (13).

9. A brake line adjuster according to claim 1 wherein: Four guide rollers (18) are connected with the inside of the adjusting box (1) on one side, every two guide rollers (18) form a group, and there are two groups in total, and the guide rollers (18) are rotatably connected with the adjusting box (1).

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