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Ratchet screw driver and ratchet device thereof
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A ratchet device and screwdriver technology, which is applied to screwdrivers, wrenches, wrenches, etc., can solve the problems of reducing the service life of the ratchet and easy wear of the edges, and achieve the effect of increasing the meshing area, long service life and simple structure
Active Publication Date: 2011-03-30
ZHEJIANG SANDING TOOLS +1
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Abstract
Description
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Problems solved by technology
Therefore, when subjected to a large torque force, the edges are easy to wear, reducing the service life of the ratchet
Method used
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Embodiment 1
[0044] like figure 1 A screwdriver ratchet device is shown, which includes a ratchet seat 1, an outer collar 2, a pawl seat 5 and two pawls 4, the two pawls 4 are installed on the pawl seat 5, and one set of ratchet seats It is arranged on the ratchet seat 5 , a retaining ring 3 is provided between the ratchet seat 1 and the ratchet seat 5 , and the inner ring of the ratchet seat 1 is provided with a ratchet 11 meshing with the pawl 4 .
[0045] like figure 2 , image 3 , Figure 5 As shown, the side walls on both sides of the front end of the ratchet seat 5 are respectively provided with cut surfaces 56, and the bottom of the cut surfaces 56 is provided with hinged grooves 51, the hinged grooves 51 are arc-shaped grooves, and the rear end of the ratchet seat 5 is a connector 53. For attaching screwdriver handles. like Figure 10 , Figure 11 As shown, the body of the ratchet 4 has an arc-shaped surface and a cylindrical protrusion 41 at the bottom, and the cylindrical ...
Embodiment 2
[0050] like Figure 13 A screwdriver ratchet device is shown, which includes a ratchet seat 1, an outer collar 2, a pawl seat 5 and two pawls 4, the two pawls 4 are installed on the pawl seat 5, and one set of ratchet seats It is arranged on the ratchet seat 5 , a retaining ring 3 is provided between the ratchet seat 1 and the ratchet seat 5 , and the inner ring of the ratchet seat 1 is provided with a ratchet 11 meshing with the pawl 4 .
[0051] like Figure 14 , Figure 15 , Figure 16 As shown, the side walls on both sides of the front end of the ratchet seat 5 are respectively provided with cut surfaces 56, and the bottom of the cut surfaces 56 is provided with hinged grooves 51, the hinged grooves 51 are arc-shaped grooves, and the rear end of the ratchet seat 5 is a connector 53. For attaching screwdriver handles. like Figure 10 , Figure 11 As shown, the body of the ratchet 4 has an arc-shaped surface and a cylindrical protrusion 41 at the bottom, and the cylind...
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Abstract
The invention relates to a ratchet screw driver, in particular to a high-torque ratchet screw driver and a ratchet wheel device thereof. The ratchet wheel device of the screw driver comprises a ratchet wheel seat, an external closing ring, a pawl seat and two pawls, wherein, the ratchet wheel seat is sheathed on the pawl seat; an inner ring of the ratchet wheel seat is provided with a ratchet engaged with the pawls; side walls on two sides of the pawl seat are respectively provided with a hinge slot; the two pawls are respectively hinged inside the hinge slots; the pawl seat is provided with a return spring which leads the pawls to stretch towards two sides and maintains the engagement with the ratchet; the external closing ring is sheathed outside the two pawls; an inner ring of the external closing ring is provided with an arc notch; external ends of the two pawls are received in the arc notch; the arc notch is provided with two convex edges; when the external closing ring rotates towards one side, one convex edge presses one pawl inwards to lead the pawl to be separated from the engagement with the ratchet. The invention can bear larger torque, and has the advantages of simple structure, high torque bearing and long service life.
Description
technical field [0001] The invention relates to a ratchet screwdriver, in particular to a large-torque ratchet screwdriver and a ratchet device thereof. Background technique [0002] Existing screwdrivers are all fixed with a metal main rod at the front end of the handle, and the free end of the main rod is provided with a cross or a straight-shaped wrenching part. The wrenching part rotates so as to loosen and tighten bolts. When using this kind of screwdriver, the user needs to keep loosening and tightening the palm so that the palm is in a position where it is easy to apply force to smooth the teeth, and the grip and the wrenching part are integrated, so the user must constantly loosen and tighten the screwdriver. It is very inconvenient to operate with the palm of your hand. [0003] In order to solve the above-mentioned technical problems, there has been a ratchet screwdriver, such as the ratchet mechanism of a screwdriver disclosed in Chinese utility model patent ZL0...
Claims
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Application Information
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