Straight ratchet screwdriver

Abstract

A screwdriver includes: a sleeve having a non-circular engagement portion; an annular body having a non-circular hole that engages with the non-circular engagement portion, preventing the annular body from rotating relative to the sleeve; a seat axially coupled to the sleeve and rotatable relative to the sleeve, the seat being rotatably accommodated within the annular body; and a fixing element that restricts axial disengagement between the seat and the sleeve. This screwdriver utilizes a quick-locking engagement technology to first assemble a straight ratchet structure coaxially, and then combines it with other accessories, effectively overcoming the drawbacks of previous technologies such as loose and unstable structures and laborious rotation adjustments.

Claims

1. A straight ratchet screwdriver, comprising: A sleeve (20) having a non-circular joint (22); an annular body (30) having a non-circular hole (34) that engages with the non-circular joint (22) so that the annular body (30) cannot rotate relative to the sleeve (20); a seat (50) axially coupled to the sleeve (20) and rotatable relative to the sleeve (20), and the seat (50) is rotatably accommodated within the annular body (30); and a fixing element (26) that restricts axial disengagement between the seat (50) and the sleeve (20).

2. The straight ratchet screwdriver as described in claim 1, wherein, The non-circular joint (22) extends axially from the bottom (21) of the sleeve (20); the non-circular hole (34) is located in the center of a closed portion (33) of the annular body (30), the closed portion (33) facing an opening (32) of the annular body (30); the seat (50) enters the annular body (30) through the opening (32), so that the closed portion (33) is located between the bottom (21) of the sleeve (20) and the seat (50).

3. The straight ratchet screwdriver as described in claim 2, wherein, The sleeve (20) includes: a cylinder (23) coaxially connected to the non-circular joint (22); a round rod (24) extending axially from the cylinder (23) along the sleeve (20); a shoulder (29) located between the round rod (24) and the cylinder (23) with a diameter difference; the seat (50) has a stepped hole (51) including a large diameter section (52) and a small diameter section (53) coaxially connected thereto, the large diameter section (52) receiving the cylinder (23) such that a difference (54) between the large diameter section (52) and the small diameter section (53) contacts the shoulder (29) such that the round rod (24) extends out of the small diameter section (53).

4. The straight ratchet screwdriver as described in claim 3, wherein, The fixing element (26) is a buckle that can be fitted into the part of the round rod (24) that extends beyond the minor diameter section (53).

5. The straight ratchet screwdriver as described in claim 1, wherein, The inner circumferential surface of the annular body (30) has a plurality of teeth (31) arranged continuously along the circumferential direction. A plurality of teeth (61) and a plurality of elastic elements (62) for providing elastic restoring force to the teeth (61) are provided on one side of the outer side of the seat (50). Each tooth (61) simultaneously or individually bites one of the teeth (31), so that the sleeve (20) rotates together or unidirectionally relative to the seat (50).

6. The straight ratchet screwdriver as described in claim 5, further comprising: A directional knob (40) includes: a through hole (41) passing through both ends of the directional knob (40), the through hole (41) receiving the annular body (30) so that the directional knob (40) and the annular body (30) can rotate relative to each other; a convex curved portion (42) and a protrusion (43) are disposed on both sides of the wall surface of the through hole (41), defining two avoidance areas (44) located between the convex curved portion (42) and the protrusion (43), the avoidance area (44) becoming the required space for the toothed member (61) to bite the toothed portion (31) or to retract; an annular rib (58) is provided on the outer peripheral surface of the seat (50) to restrict the convex curved portion (42) and the protrusion (43) from axially disengaging relative to the seat (50).

7. The straight ratchet screwdriver as described in claim 6, wherein, The convex part (42) is provided with multiple bead holes (45). On the other side of the outer side of the seat (50), there is a bead (63) and a spring (64). The spring (64) elastically pushes the bead (63) into one of the bead holes (45), so that the directional knob (40) that rotates with each other is positioned with the annular body (30).

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