Hand tool with pivotable head

Abstract

A hand tool includes a handle and a head which includes a protrusion having a toothed portion. The handle includes a connection portion formed on one end thereof. Two lugs extend from the connection portion to form a recess between the two lugs and the connection portion. Two ribs respectively extend from the connection portion and ARE located between the two lugs. The two ribs are integral with the two lugs and the connection portion. The protrusion of the head is pivotably connected between the two lugs and the toothed portion is engaged with a control unit located in the recess. The two ribs restrict the angle that the head is pivoted relative to the handle.

Claims

1. A hand tool comprising: a head having a protrusion extending therefrom, the protrusion having a toothed portion; a handle having a connection portion formed on one end thereof, two lugs extending from the connection portion so as to form a recess between the two lugs and the connection portion, two ribs respectively extending from the connection portion and located between the two lugs, the two ribs being integral with the two lugs and the connection portion, the protrusion of the head pivotably connected between the two lugs, and a control unit located in the recess and engaged with the toothed portion, the two ribs restricting an angle that the head is pivoted relative to the handle.

2. The hand tool as claimed in claim 1, wherein a first axis passes through a center of an inner end of the recess, a second axis extends along a top of each of the ribs, a restriction angle is formed between the first axis and each of the second axes, the restriction angle is between 60 degrees to 75 degrees, including 60 degrees and 70 degrees.

3. The hand tool as claimed in claim 2, wherein the protrusion of the head and each of the two lugs has a hole, a pin extends through the holes of the protrusion of the head and each of the two lugs to pivotably connect the protrusion of the head between the two lugs.

4. The hand tool as claimed in claim 1, wherein the protrusion of the head and each of the two lugs has a hole, a pin extends through the holes of the protrusion of the head and each of the two lugs to pivotably connect the protrusion of the head between the two lugs.

5. The hand tool as claimed in claim 1, wherein the ribs each have a first height, the two ribs each have a second height which is higher than the first height.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view to show the hand tool of the present invention;

(2) FIG. 2 is an exploded view of the hand tool of the present invention;

(3) FIG. 3 is a perspective view to show the handle of the hand tool of the present invention;

(4) FIG. 4 shows that the head is pivotable relative to the handle;

(5) FIG. 5 shows the conventional hand tool;

(6) FIG. 6 shows the head of the conventional hand tool is pivotable relative to the handle, and

(7) FIG. 7 shows that two lugs of the conventional hand tool are deformed outward.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(8) Referring to FIGS. 1 to 4, the hand tool of the present invention comprises a head 1 having a protrusion extending therefrom, and the protrusion includes a toothed portion 11 formed along a curved distal end of the protrusion. A handle 2 includes a connection portion 21 formed on one end thereof. Two lugs 3 extend from the connection portion 21 so as to form a recess 4 between the two lugs 3 and the connection portion 21. Two ribs 5 respectively extend from the connection portion 21 and are located between the two lugs 3. The two ribs 5 are integral with the two lugs 3 and the connection portion 21. The protrusion of the head 1 and each of the two lugs 3 has a hole 31. A pin 7 extends through the holes of the protrusion of the head 1 and each of the two lugs 3 to pivotably connect the protrusion of the head 1 between the two lugs 3. A control unit 6 is located in the recess 4 and includes a spring and a toothed member which is engaged with the toothed portion 11.

(9) Specifically, a first axis A passes through the center of the inner end of the recess 4, and a second axis B extends along the top of each of the ribs 5. A restriction angle C is therefore formed between the first axis A and each of the second axes B. Preferably, the restriction angle C is between 60 degrees to 75 degrees, including 60 degrees and 70 degrees.

(10) In order to improve the shortcoming that the two lugs can be deformed by high torque operation, the two ribs 5 of the present invention restrict the angle that the head 1 is pivoted relative to the handle 2. Furthermore, because the two ribs 5 are integral with the two lugs 3 and the connection portion 21, so that the force can be shared by the two lugs 3 and the two ribs 5 to effectively prevent deformation to the lugs 3.

(11) The restriction angle C means the angle that the head 1 is able to be pivoted relative to the handle 2, in other words, the head 1 can be pivoted up to 150 degrees as shown in FIG. 4. As shown in FIGS. 3 and 4, the ribs 5 each have a first height h which is measured from the root portion to the top of each rib 5. The two ribs 5 each have a second height H which is measured from the room portion to the top of each rib 5. The second height H is higher than the first height h to ensure that the head 1 is stopped by the ribs 5.

(12) While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.