A foot-operated puller

Abstract

The utility model relates to a puller free technology field discloses a kind of foot-tread puller free, including cylinder shell, center shaft is rotationally equipped in the center of cylinder shell, and the top of cylinder shell is equipped with the foot-tread mechanism for driving center shaft rotation;Foot-tread mechanism includes the mounting bottom plate fixed in the top of cylinder shell, and the one end of center shaft near mounting bottom plate is sleeved with ratchet wheel, and the one side of the top of mounting bottom plate is rotationally equipped with the brake handle of the ratchet joint of ratchet wheel, and the other side of the top of mounting bottom plate is rotationally equipped with the foot-tread main body of the driving ratchet wheel rotation.The puller free of this foot-tread, by the traditional hand-shaking drive mode is improved to foot-tread drive, and change traditional gear transmission mode, reduce the effective tread circle number required to complete start, operate labor-saving, easily, and promote start efficiency significantly improve, simultaneously, both can realize transmission tightening, also can be realized fast loosening by brake handle, possess tightening and loosening bidirectional function, improve the flexibility and convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of pull-free devices, and in particular to a foot-operated pull-free device. Background Technology

[0002] A diesel engine starter without a pull cord is an auxiliary starting device that reduces the labor intensity of starting the engine and improves starting efficiency and safety by replacing the traditional manual rope starting method. In cold weather or when the diesel engine has not been used for a long time, the starter can effectively help start the engine and avoid equipment damage caused by improper manual starting.

[0003] Traditional hand-operated starters, due to their gear transmission and hand-crank operation, often require users to rotate them multiple times to complete the start-up preparation, resulting in a long overall process and low efficiency. At the same time, the hand-crank operation itself requires a high level of upper limb strength and sustained force from the user, especially when attempting to start the device multiple times or when the device is not in good condition, which can easily lead to operator fatigue and a poor user experience. Utility Model Content

[0004] In view of the problems of existing pull-free devices that cause operator fatigue, poor user experience, and low efficiency, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a foot-operated, pull-free device, which can significantly reduce the intensity of operation and improve the starting efficiency.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a foot-operated pull-free device, comprising a cylindrical shell, a central shaft rotatably disposed at the center of the cylindrical shell, and a foot pedal mechanism for driving the central shaft to rotate installed at the top of the cylindrical shell; The foot pedal mechanism includes a mounting base plate fixed to the top of the cylindrical shell, a ratchet is sleeved on one end of the central shaft near the mounting base plate, a brake handle that engages with the ratchet is rotatably provided on one side of the top of the mounting base plate, and a foot pedal body that drives the ratchet to rotate is rotatably provided on the other side of the top of the mounting base plate.

[0007] As an improved technical solution, the central shaft is fitted with a toothed end inside the cylindrical shell, and a square column is installed at the end of the central shaft near the toothed end.

[0008] As an improved technical solution, a third positioning shaft is fixed on the top of the mounting base plate and on the side near the brake lever, a second positioning shaft is fixed on the top of the mounting base plate and on the side near the pedal body, and a first positioning shaft is fixed on the top of the mounting base plate and on the side of the third positioning shaft away from the brake lever.

[0009] As an improved technical solution, the foot pedal body includes a horizontal bar, a sleeve is inserted and fixed at the top of the horizontal bar near the central axis, a foot pedal is fixedly installed at the end of the horizontal bar away from the central axis, a locking block is rotatably installed on the horizontal bar through a mounting shaft installed at its bottom, a first torsion spring is sleeved on the end of the mounting shaft away from the horizontal bar, and the two abutting ends of the first torsion spring abut against the locking block and the horizontal bar respectively, a second torsion spring is sleeved on the sleeve, and one abutting end of the second torsion spring abuts against the horizontal bar, and the other abutting end is sleeved on the first positioning shaft.

[0010] As an improved technical solution, the brake lever is integrally formed with a locking tooth that engages with the ratchet at one end.

[0011] As an improved technical solution, a T-shaped shaft is fixed on the top of the mounting base plate between the second positioning shaft and the third positioning shaft, and a rotating hole is provided on the top of the brake lever for the vertical end of the T-shaped shaft to pass through. The brake lever is rotatably connected to the T-shaped shaft through the rotating hole.

[0012] As an improved technical solution, the end of the T-shaped shaft away from the mounting base plate is provided with an external thread, and a hexagonal nut is installed on the T-shaped shaft through the external thread.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: 1. This utility model, through the modular arrangement of the cylindrical shell, central shaft and foot pedal mechanism, and through the limiting of multiple positioning shafts, enables a single shaft to pass through, which facilitates assembly and installation and improves assembly efficiency.

[0014] 2. This utility model improves the traditional hand-crank drive method to foot-operated drive and changes the traditional gear transmission method, reducing the effective number of pedal rotations required to complete the start, making operation easier and more effortless, and significantly improving starting efficiency. At the same time, it can achieve both transmission tightening and quick release via the brake lever, providing a two-way tightening and releasing function, thus improving the flexibility and convenience of use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a three-dimensional structural diagram of a foot-operated pull-free device according to the present invention.

[0016] Figure 2 This is a cross-sectional structural diagram of a foot-operated pull-free device according to this utility model.

[0017] Figure 3 This is a schematic diagram of the exploded state of a foot pedal mechanism of the present invention, which is a foot-operated, pull-free device.

[0018] Figure 4 This is a schematic diagram of the main body of a foot pedal that can be stepped on without pulling, according to this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Cylinder shell; 2. Central shaft; 3. Foot pedal mechanism; 4. Mounting base plate; 5. Brake lever; 51. Rotating hole; 52. Clamping tooth; 53. T-shaped shaft; 54. Hexagonal nut; 6. Ratchet; 7. Foot pedal body; 71. Crossbar; 72. Foot pedal; 73. Sleeve; 74. Mounting shaft; 75. Clamping block; 76. First torsion spring; 77. Second torsion spring; 8. First positioning shaft; 9. Second positioning shaft; 10. Third positioning shaft; 11. Convex tooth. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 Reference Figures 1-4 This is the first embodiment of the present utility model, which provides a foot-operated pull-free device. This foot-operated pull-free device includes a cylindrical shell 1 and a protruding edge integrally formed at the bottom end of the cylindrical shell 1. A fixing hole is provided on the protruding edge. A central shaft 2 is rotatably provided at the center of the cylindrical shell 1. A foot pedal mechanism 3 for driving the central shaft 2 to rotate is installed at the top end of the cylindrical shell 1. The foot pedal mechanism 3 includes a mounting base plate 4 fixed to the top of the cylindrical shell 1, and a through hole for the central shaft 2 to pass through is provided in the center of the mounting base plate 4. A ratchet 6 is sleeved on one end of the central shaft 2 near the mounting base plate 4. A brake handle 5 that engages with the ratchet 6 is rotatably provided on one side of the top of the mounting base plate 4. A foot pedal body 7 that drives the ratchet 6 to rotate is rotatably provided on the other side of the top of the mounting base plate 4. A hexagonal cavity is provided at the center of the ratchet 6. A hexagonal protrusion that engages with the hexagonal cavity is provided on the central shaft 2. A foot pedal is connected to the foot pedal body 7.

[0022] By improving the traditional hand-crank drive to a foot-operated drive and changing the traditional gear transmission method, the effective number of pedal strokes required to complete the start is reduced, making operation easier and more effortless, and significantly improving starting efficiency. At the same time, it can both tighten the transmission and quickly release it via the brake lever 5, providing a two-way tightening and releasing function, which improves the flexibility and convenience of use.

[0023] The central shaft 2 is fitted with a tooth 11 at one end inside the cylindrical shell 1, and a square column is installed at the end of the central shaft 2 near the tooth 11.

[0024] A third positioning shaft 10 is fixed to the top of the mounting base plate 4 and the side near the brake lever 5. A second positioning shaft 9 is fixed to the top of the mounting base plate 4 and the side near the pedal body 7. A first positioning shaft 8 is fixed to the top of the mounting base plate 4 and the side away from the brake lever 5 on the third positioning shaft 10.

[0025] The foot pedal body 7 includes a horizontal bar 71. A sleeve 73 is inserted and fixed at the top of the horizontal bar 71 near the central shaft 2, and the top of the central shaft 2 passes through the inside of the sleeve 73. A foot pedal 72 is fixedly installed at the end of the horizontal bar 71 away from the central shaft 2. A locking block 75 is rotatably installed on the horizontal bar 71 through a mounting shaft 74 installed at its bottom. The end of the locking block 75 away from the hinge block 72 is locked on the third positioning shaft 10. A first torsion spring 76 is sleeved at the end of the mounting shaft 74 away from the horizontal bar 71. The two abutting ends of the first torsion spring 76 abut against the locking block 75 and the horizontal bar 71 respectively. Under the elastic action of the first torsion spring 76, the horizontal bar 71 is reset and rotated. A second torsion spring 77 is sleeved on the sleeve 73. One abutting end of the second torsion spring 77 abuts against the horizontal bar 71, and the other abutting end is sleeved on the first positioning shaft 8.

[0026] The brake lever 5 has a locking tooth 52 that engages with the ratchet 6 at one end.

[0027] A T-shaped shaft 53 is fixed on the top of the mounting base plate 4 and between the second positioning shaft 9 and the third positioning shaft 10. A rotating hole 51 is provided on the top of the brake handle 5 for the vertical end of the T-shaped shaft 53 to pass through. The brake handle 5 is rotatably connected to the T-shaped shaft 53 through the rotating hole 51.

[0028] The T-shaped shaft 53 has an external thread at the end away from the mounting base plate 4, and a hexagonal nut 54 is installed on the T-shaped shaft 53 through the external thread.

[0029] A foot pedal mechanism 3 passes directly through the center of the cylindrical shell 1. The ratchet 6 is quickly installed on the central shaft 2 through the engagement between the hexagonal cavity and the hexagonal protrusion. Then, the brake lever 5 is positioned between the first positioning shaft 8 and the second positioning shaft 9, and the T-shaped shaft 53 passes through the interior of the rotating hole 51 to achieve the rotational installation of the brake lever 5. Finally, the crossbar 71 is positioned between the second positioning shaft 9 and the third positioning shaft 10, and the top of the central shaft 2 passes through the interior of the sleeve 73, thus completing the installation of the foot pedal body 7. This completes the assembly between the cylindrical shell 1, the central shaft 2, and the foot pedal mechanism 3. The modular design, with multiple positioning shafts for limiting the movement, facilitates the connection of a single shaft, making assembly and installation easier and improving assembly efficiency.

[0030] The working principle of this utility model is as follows: the drive bar 71 rotates around the central shaft 2. During the rotation, the ratchet 6 is driven to rotate synchronously through the central shaft 2 to store force and compress the second torsion spring 77. After the force is stored, the crossbar 71 rotates in the opposite direction and is guided by the locking block 75 and the third positioning shaft 10 to make the locking block 75 rotate and compress the first torsion spring 76. When force needs to be released, rotate the brake lever 5 in the direction of the first positioning shaft 8 to disengage the locking teeth 52 from the brake lever 5, thereby resetting the ratchet 6 and the foot pedal body 7.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A foot-operated pull-free device, comprising a cylindrical shell (1), characterized in that: A central shaft (2) is rotatably provided at the center of the cylindrical shell (1), and a foot pedal mechanism (3) for driving the central shaft (2) to rotate is installed at the top of the cylindrical shell (1). The foot pedal mechanism (3) includes a mounting base plate (4) fixed to the top of the cylindrical shell (1), a ratchet (6) is sleeved on one end of the central shaft (2) near the mounting base plate (4), a brake handle (5) is rotatably provided on one side of the top of the mounting base plate (4) and engaged with the ratchet (6), and a foot pedal body (7) is rotatably provided on the other side of the top of the mounting base plate (4) to drive the ratchet (6) to rotate.

2. The foot-operated pull-free device according to claim 1, characterized in that: The central shaft (2) is fitted with a tooth (11) at one end inside the cylindrical shell (1), and a square column is installed at the end of the central shaft (2) near the tooth (11).

3. The foot-operated pull-free device according to claim 2, characterized in that: A third positioning shaft (10) is fixed on the top of the mounting base plate (4) and on the side near the brake lever (5). A second positioning shaft (9) is fixed on the top of the mounting base plate (4) and on the side near the pedal body (7). A first positioning shaft (8) is fixed on the top of the mounting base plate (4) and on the side of the third positioning shaft (10) away from the brake lever (5).

4. The foot-operated pull-free device according to claim 3, characterized in that: The foot pedal body (7) includes a horizontal bar (71), a sleeve (73) is inserted and fixed at the top of the horizontal bar (71) near the central shaft (2), a foot pedal (72) is fixedly installed at the end of the horizontal bar (71) away from the central shaft (2), a locking block (75) is rotatably installed on the horizontal bar (71) through the mounting shaft (74) installed at its bottom, a first torsion spring (76) is sleeved at the end of the mounting shaft (74) away from the horizontal bar (71), and the two abutting ends of the first torsion spring (76) abut against the locking block (75) and the horizontal bar (71) respectively, and a second torsion spring (77) is sleeved on the sleeve (73), and one abutting end of the second torsion spring (77) abuts against the horizontal bar (71), and the other abutting end is sleeved on the first positioning shaft (8).

5. The foot-operated pull-free device according to claim 4, characterized in that: The brake lever (5) is integrally formed at one end near the ratchet (6) and has a locking tooth (52) that engages with the ratchet (6).

6. The foot-operated pull-free device according to claim 5, characterized in that: A T-shaped shaft (53) is fixed on the top of the mounting base plate (4) and between the second positioning shaft (9) and the third positioning shaft (10). A rotating hole (51) is provided on the top of the brake handle (5) for the vertical end of the T-shaped shaft (53) to pass through. The brake handle (5) is rotatably connected to the T-shaped shaft (53) through the rotating hole (51).

7. A foot-operated, pull-free device according to claim 6, characterized in that: The T-shaped shaft (53) has an external thread at the end away from the mounting base plate (4), and a hexagonal nut (54) is installed on the T-shaped shaft (53) through the external thread.

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