Convenient adjusting arm

Abstract

The utility model relates to the technical field of adjusting arms, and discloses a convenient adjusting arm which comprises a fixing ring, a transmission shaft is rotatably connected to the interior of the fixing ring, an inner shaft is slidably connected to the inner wall of the transmission shaft, a knob is fixedly connected to the outer wall of the inner shaft, a first gear is fixedly connected to the outer wall of the transmission shaft, and a second gear is fixedly connected to the outer wall of the first gear. The outer wall of the first gear is connected with a second gear in a meshed mode, the upper surface of the second gear is fixedly connected with a slotting plate, the outer wall of the slotting plate is rotatably connected to the interior of the fixing ring, the upper surface of the slotting plate is slidably connected with a sliding rod, and a sliding groove is formed in the upper surface of the slotting plate. According to the utility model, the knob is rotated to drive the inner shaft to rotate, the inner shaft drives the gear I to rotate through the transmission shaft, the gear I drives the slotting plate to rotate through the gear II, and the slotting plate drives the sliding rod to slide, so that the adjusting arm can be kept stable when being connected with camshafts with different specifications; and the harm of insensitive braking caused by slipping between the adjusting arm and the cam shaft is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of adjusting arms, in particular to a portable adjusting arm. Background Art

[0002] During the use of a vehicle, due to the wear of the brake shoe and the brake drum, the brake clearance will gradually increase. The adjusting arm can automatically adjust the brake clearance to keep it within a proper range to ensure the normal operation of the braking system. This can improve the reliability and safety of braking and reduce the risk of brake failure.

[0003] The adjusting arm acts on the brake shoe by connecting to the brake camshaft. However, due to different specifications of the camshaft, the connection may be loose, resulting in slippage between the camshaft and the adjusting arm during use, affecting the braking sensitivity and increasing the accident risk. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a portable adjusting arm, aiming to improve the problem that the loose connection between the camshaft and the adjusting arm will cause slippage, affecting the braking sensitivity and increasing the accident risk.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] The portable adjusting arm includes a fixing ring. A transmission shaft is rotatably connected inside the fixing ring. An inner shaft is slidably connected to the inner wall of the transmission shaft. A knob is fixedly connected to the outer wall of the inner shaft. A gear one is fixedly connected to the outer wall of the transmission shaft. A gear two is meshed with the outer wall of the gear one. A slotted plate is fixedly connected to the upper surface of the gear two. The outer wall of the slotted plate is rotatably connected inside the fixing ring. A sliding rod is slidably connected to the upper surface of the slotted plate. A chute is formed on the upper surface of the slotted plate. The bottom end of the sliding rod is slidably connected inside the chute. The top end of the sliding rod is fixedly connected to a clamping bracket. The outer wall of the clamping bracket is slidably connected inside the fixing ring. A limiting component is arranged on the outer wall of the knob, and the limiting component is used to limit the rotation of the knob.

[0007] Preferably, the limiting component includes a plug. The outer wall of the plug is fixedly connected to the outer wall of the knob. A limiting hole is formed on the outer wall of the fixing ring. The outer wall of the plug is slidably connected inside the limiting hole. A first tension spring is fixedly connected to the outer wall of the knob. The outer wall of the first tension spring is fixedly connected to the outer wall of the transmission shaft, and the outer wall of the first tension spring is located outside the inner shaft.

[0008] Preferably, an adjusting arm main body is fixedly connected to the outer wall of the fixing ring. A sliding bracket is slidably connected inside the adjusting arm main body. A connecting cylinder is fixedly connected to the outer wall of the sliding bracket.

[0009] Preferably, a sliding column is fixedly connected to the upper surface of the sliding frame.

[0010] Preferably, a rotating pin is rotatably connected to the outer wall of the sliding column.

[0011] Preferably, a second tension spring is fixedly connected to the outer wall of the rotating pin.

[0012] Preferably, the bottom end of the second tension spring is fixedly connected to a fixing block, and the outer wall of the fixing block is fixedly connected to the outer wall of the sliding column.

[0013] Preferably, a limiting tooth is provided on the upper surface of the adjusting arm body, and the outer wall of the limiting tooth is rotatably connected to the outer wall of the rotating pin.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, by rotating the knob to drive the inner shaft to rotate, the inner shaft drives the first gear to rotate through the transmission shaft, the first gear drives the slotted plate to rotate through the second gear, and the slotted plate drives the sliding rod to slide, which can ensure that the adjusting arm remains stable when connected to camshafts of different specifications, and reduce the harm of the adjusting arm slipping from the camshaft, resulting in insensitive braking.

[0016] 2. In the utility model, by rotating the rotating pin to release the restriction, then sliding the sliding column to drive the sliding frame to slide, and the sliding frame drives the connecting cylinder to slide, the position of the connecting cylinder can be adjusted. Then, rotating the rotating pin to lock the sliding column makes it convenient to connect the adjusting arm to the output push rod at different positions, and the adjustment operation is simple and convenient, making the installation operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the portable adjusting arm proposed by the utility model;

[0018] Figure 2 is a schematic diagram of the first gear of the portable adjusting arm proposed by the utility model;

[0019] Figure 3 is a schematic diagram of the first tension spring of the portable adjusting arm proposed by the utility model;

[0020] Figure 4 is a schematic diagram of the rotating pin of the portable adjusting arm proposed by the utility model.

[0021] Legend Explanation:

[0022] 1. Fixed ring; 2. Transmission shaft; 3. Inner shaft; 4. Knob; 5. Gear 1; 6. Gear 2; 7. Slotted plate; 8. Slide bar; 9. Slide groove; 10. Clamping bracket; 11. Pin; 12. Limit hole; 13. First tension spring; 14. Adjusting arm main body; 15. Sliding frame; 16. Connecting cylinder; 17. Slide post; 18. Rotating pin; 19. Second tension spring; 20. Fixed block; 21. Limiting tooth. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Refer to Figure 1 and Figure 2 As shown in the figure, an embodiment provided by the present invention: a portable adjusting arm, including a fixed ring 1, a transmission shaft 2 is rotatably connected inside the fixed ring 1, an inner shaft 3 is slidably connected to the inner wall of the transmission shaft 2, a knob 4 is fixedly connected to the outer wall of the inner shaft 3, a gear 1 is fixedly connected to the outer wall of the transmission shaft 2, a gear 2 is meshed with the outer wall of the gear 1, a slotted plate 7 is fixedly connected to the upper surface of the gear 2, the outer wall of the slotted plate 7 is rotatably connected inside the fixed ring 1, a slide bar 8 is slidably connected to the upper surface of the slotted plate 7, a slide groove 9 is opened on the upper surface of the slotted plate 7, the bottom end of the slide bar 8 is slidably connected inside the slide groove 9, the top end of the slide bar 8 is fixedly connected to a clamping bracket 10, the outer wall of the clamping bracket 10 is slidably connected inside the fixed ring 1, and a limiting component is arranged on the outer wall of the knob 4, and the limiting component is used to limit the rotation of the knob 4.

[0025] Specifically, when preparing to connect the camshaft, insert the camshaft between the clamping brackets 10, rotate the knob 4 to drive the inner shaft 3 to rotate. There are limiting protrusions on the outer wall of the inner shaft 3. The inner shaft 3 can slide inside the transmission shaft 2 or drive the transmission shaft 2 to rotate. The transmission shaft 2 drives the gear 1 to rotate, the gear 1 drives the slotted plate 7 to rotate through the gear 2, the slotted plate 7 rotates inside the fixed ring 1, a slide groove 9 is opened on the upper surface of the slotted plate 7, and the rotation of the slotted plate 7 will drive the clamping bracket 10 to slide inwards or outwards through the slide groove 9. The clamping bracket 10 slides inside the fixed ring 1, and the fixed ring 1 supports the sliding of the clamping bracket 10. When the four groups of clamping brackets 10 slide inwards, the camshaft can be clamped to prevent slipping after the two are connected.

[0026] Refer to Figure 1 — Figure 3, the limiting component includes a bolt 11, the outer wall of the bolt 11 is fixedly connected to the outer wall of the knob 4, a limiting hole 12 is formed in the outer wall of the fixing ring 1, the inner part of the limiting hole 12 is slidably connected to the outer wall of the bolt 11, a first tension spring 13 is fixedly connected to the outer wall of the knob 4, the outer wall of the first tension spring 13 is fixedly connected to the outer wall of the transmission shaft 2, and the outer wall of the first tension spring 13 is located outside the inner shaft 3.

[0027] Specifically, to prevent the knob 4 from rotating and causing loosening of the connection with the camshaft, a bolt 11 is provided on the outer wall of the knob 4. When the bolt 11 is inserted into the limiting hole 12, the knob 4 cannot rotate. When rotation is required, the knob 4 is pulled outwards to pull out the bolt 11, and the first tension spring 13 will rebound, further ensuring the stability of the limiting function through the first tension spring 13.

[0028] Refer to Figure 1 and Figure 4 , a adjusting arm main body 14 is fixedly connected to the outer wall of the fixing ring 1, a sliding frame 15 is slidably connected to the inside of the adjusting arm main body 14, a connecting cylinder 16 is fixedly connected to the outer wall of the sliding frame 15, a sliding column 17 is fixedly connected to the upper surface of the sliding frame 15, a rotating pin 18 is rotatably connected to the outer wall of the sliding column 17, a second tension spring 19 is fixedly connected to the outer wall of the rotating pin 18, the bottom end of the second tension spring 19 is fixedly connected to a fixing block 20, the outer wall of the fixing block 20 is fixedly connected to the outer wall of the sliding column 17, and a limiting tooth 21 is provided on the upper surface of the adjusting arm main body 14, and the outer wall of the limiting tooth 21 is rotatably connected to the outer wall of the rotating pin 18.

[0029] Specifically, when it is necessary to connect the output push rod, due to different installation and connection positions, the position of the connecting cylinder 16 needs to be adjusted. First, rotate the rotating pin 18, and the rotating pin 18 is disengaged from the restriction of the limiting tooth 21, and the sliding column 17 can be pushed to slide. The sliding column 17 drives the sliding frame 15 at the bottom end to slide. The sliding frame 15 slides inside the adjusting arm main body 14, and the sliding frame 15 drives the connecting cylinder 16 to slide to a convenient connection position. Release the rotating pin 18, and the second tension spring 19 will rebound, clamping the rotating pin 18 between the limiting teeth 21, restricting the sliding of the sliding column 17 through the rotating pin 18, thereby fixing the connecting cylinder 16 to prevent loosening, and making it more convenient to operate the adjusting arm when connecting the output push rod by adjusting the position of the connecting cylinder 16.

[0030] Working principle: When the adjusting arm is used, insert the camshaft into the fixing ring 1, pull the knob 4, pull out the pin 11, turn the knob 4 to drive the transmission shaft 2 to rotate through the inner shaft 3, the transmission shaft 2 drives the gear 1 5 to rotate, the gear 1 5 drives the slotted plate 7 to rotate through the gear 2 6, the slotted plate 7 rotates to make the slide bar 8 slide, the slide bar 8 drives the clamping frame 10 to fix the camshaft, after the connection between the adjusting arm and the camshaft is stable, release the knob 4 to make the tension spring 13 rebound, the pin 11 slides into the limiting hole 12, and the connection between the camshaft and the adjusting arm is completed. When the output push rod needs to be connected, the position of the connecting tube 16 may need to be adjusted due to different installation positions. , rotate the rotating pin 18 upward to disengage the rotating pin 18 from the restriction of the limiting tooth 21, push the sliding column 17 to drive the sliding frame 15 to slide, and the sliding frame 15 drives the connecting tube 16 to slide. When sliding to a suitable position, release the rotating pin 18, and the rotating pin 18 returns to between the limiting teeth 21, so that the rotating pin 18 can be stuck, thereby preventing the sliding frame 15 and the connecting tube 16 from sliding, and then connect the output push rod and the connecting tube 16. The output push rod can drive the camshaft to rotate through the adjusting arm, thereby adjusting the brake clearance. The adjusting arm is not only more stably connected to camshafts of different specifications and diameters, but also more convenient to connect the output push rod, making the installation and operation of the entire adjusting arm more convenient.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Portable adjusting arm, comprising a fixing ring (1), characterized in that: A transmission shaft (2) is rotatably connected inside the fixed ring (1). An inner shaft (3) is slidably connected to the inner wall of the transmission shaft (2). A knob (4) is fixedly connected to the outer wall of the inner shaft (3). A first gear (5) is fixedly connected to the outer wall of the transmission shaft (2). A second gear (6) is meshed with the outer wall of the first gear (5). A slotted plate (7) is fixedly connected to the upper surface of the second gear (6). The outer wall of the slotted plate (7) is rotatably connected inside the fixed ring (1). A slide bar (8) is slidably connected to the upper surface of the slotted plate (7). A chute (9) is formed on the upper surface of the slotted plate (7). The bottom end of the slide bar (8) is slidably connected inside the chute (9). The top end of the slide bar (8) is fixedly connected to a clamping bracket (10). The outer wall of the clamping bracket (10) is slidably connected inside the fixed ring (1). A limiting component is arranged on the outer wall of the knob (4), and the limiting component is used to limit the rotation of the knob (4).

2. The portable adjustment arm according to claim 1, wherein: The limiting component includes a bolt (11). The outer wall of the bolt (11) is fixedly connected to the outer wall of the knob (4). A limiting hole (12) is formed on the outer wall of the fixed ring (1). The outer wall of the bolt (11) is slidably connected inside the limiting hole (12). A first tension spring (13) is fixedly connected to the outer wall of the knob (4). The outer wall of the first tension spring (13) is fixedly connected to the outer wall of the transmission shaft (2). The outer wall of the first tension spring (13) is located outside the inner shaft (3).

3. The portable adjustment arm according to claim 1, wherein: An adjustment arm body (14) is fixedly connected to the outer wall of the fixed ring (1). A sliding bracket (15) is slidably connected inside the adjustment arm body (14). A connecting cylinder (16) is fixedly connected to the outer wall of the sliding bracket (15).

4. The portable adjustment arm according to claim 3, characterized in that: A slide post (17) is fixedly connected to the upper surface of the sliding bracket (15).

5. The portable adjusting arm according to claim 4, wherein: A rotating pin (18) is rotatably connected to the outer wall of the slide post (17).

6. The portable adjustment arm according to claim 5, wherein: A second tension spring (19) is fixedly connected to the outer wall of the rotating pin (18).

7. The portable adjustment arm according to claim 6, wherein: The bottom end of the second tension spring (19) is fixedly connected to a fixed block (20). The outer wall of the fixed block (20) is fixedly connected to the outer wall of the slide post (17).

8. The portable adjusting arm according to claim 3, characterized in that: Limiting teeth (21) are arranged on the upper surface of the adjustment arm body (14). The outer wall of the limiting teeth (21) is rotatably connected to the outer wall of the rotating pin (18).

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