JP2640735B2 - wrench - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an adjustable wrench for twisting a hexagonal nut or bolt head.

[0002]

2. Description of the Related Art Conventionally, this kind of adjustable wrench is disclosed in Japanese Utility Model Laid-Open No. 49-6292 and Japanese Utility Model Laid-Open No. 53-15059.
No. 5 has been proposed. In the former wrench, as shown in FIG. 7, the head 102 at the tip of the handle 101 is provided with a holding hole 103 having a U-shape at both ends in the axial direction. A screw 105 is movably accommodated in a shaft hole 104 along the axis from the right end of the holding hole 103 in the handle 101, and a front end of the screw 105 has a rectangular shape that fits into the rectangular wall of the holding hole 103. The contact member 106 is fixed. The screw 105 is screwed with a rotary operation body 108 located in the rectangular hole 107, and the rotary operation body 108 is rotated to move the screw 105 and the contact member 106 in the axial direction. A hexagonal nut or bolt head is pinched and twisted between the left-end square wall and the contact member 106. Therefore, by moving the contact member 106, it is possible to cope with nuts or bolt heads of different sizes.

In the latter wrench, as shown in FIGS. 8 and 9, a head 112 is provided at the tip of a handle 111 so as to protrude greatly downward. The head 112 is located at a large distance from the handle 111.
In parallel with this, a screw 113 is provided, and a contact member 115 having a shape adapted to the inside of the holding hole 114 of the head 112 is attached to the tip of the screw 113. When the rotary operation body 116 screwed to the screw 113 is rotated, the contact member 115 moves in the axial direction. Therefore, the nut or bolt head is pinched and twisted between the inner wall on the distal end side of the holding hole 114 and the contact member 115. Therefore, by moving the contact member 115, it is possible to cope with nuts and bolt heads having different dimensions.

[0004]

However, in the conventional wrench of FIG. 7, since the shaft hole 104 is provided in the handle 101, the moving range of the screw 105 in the shaft hole 104 is limited to a small value. Since the hole 106 is adapted to the holding hole 103, the moving range of the holding hole 103 is limited to a small range, so that a large range corresponding to the size of the nut and the bolt head cannot be made large. In the conventional wrench shown in FIGS. 8 and 9, the head 112 has a large shape because it protrudes largely downward.

An object of the present invention is to solve such a problem and to provide a wrench in which the range in which the dimensions of nuts and bolt heads can be handled can be remarkably increased without increasing the size.

[0006]

In order to achieve the above-mentioned object, a wrench of the present invention is provided with a head (14) and a penetrating hole provided near a tip of the head (14) and perpendicular to a head plane. A holding hole (24) having inclined wall portions (26) and (28) symmetrical with respect to the head axis on the side thereof and a concave portion (66) on the side of the head rear end (22); ) Near the head rear end portion (22), an operation hole (38) penetrated perpendicularly to the head plane, and the recessed portion (66) of the holding hole (24) from the head rear end portion. A shaft hole (36) penetrating in the head axis direction through the operation hole (38) to (22), one end protrudes into the holding hole (24), and the other end is the head rear end (22).
And is movably housed in the shaft hole (38) along the shaft hole (38) in a state protruding outward from the shaft hole, and has a screw surface (42a) and an axial engagement groove (46) on the outer peripheral surface. An adjusting bolt (42), a contact member (58) attached to the tip of the adjusting bolt (42), and capable of moving in and out of the recess (66) of the holding hole (24); and the head (14). ), A rotation restricting means for restricting rotation of the adjustment bolt (42) by engaging with an engagement groove (46) of the adjustment bolt (42), and an operation hole (38) of the head (14). And a rotary operation body (40) which is screwed to the screw surface (42a) of the adjustment bolt (42) and moves the adjustment bolt (42) along the shaft hole (36) by a rotation operation.
And the rear end portion (2) of the head of the adjustment bolt (42).
2) a handle that is inclined with respect to the axis of the head and is integrally connected to the head (14) near the upper end of the rear end portion (22) of the head so as not to prevent the head from projecting outward; (12).

[0007]

According to the wrench of the present invention, the wrench of the present invention has
When the rotating operation body 40 is rotated, the adjustment bolt 42 goes straight along the shaft hole 36 without rotating due to the rotation restricting means,
Inclined wall portions 26 and 28 at the tip end of holding hole 24 of head 14
The nut and the bolt head can be pinched and twisted between the adjusting bolt 42 and the contact member 58 at the tip of the adjusting bolt 42. Handle 1
2 is an adjustment bolt 42 from above the rear end 22 of the head 14.
The contact member 58 is inclined with respect to the axis of the head so as not to prevent the movement of the contact member 58, and the contact member 58 can advance and retreat into the concave portion 66 of the holding hole 24, so that the movement range of the contact member 58 can be increased. Therefore, the range in which the dimensions of the nut and the bolt head can be increased can be significantly increased.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. At one end of the handle 12 of the wrench 10 in the axial direction, there is formed a head 14 having a substantially rectangular shape and a tip protruding in a substantially triangular shape. A retaining hole 16 is provided at the other end of the handle 12 in the axial direction.

The head 14 has an upper surface 18 and a lower surface 20 which are parallel to each other. The distance between the upper surface 18 and the lower surface 20 is larger than the thickness of the handle 12, and in order to facilitate the twisting operation and to avoid an adjustment bolt 42 described later, as shown in FIG. In the upper part of the handle, the handle 12 is inclined with respect to the head 14 at an angle of about 15 degrees diagonally upward. And handle 1
A long groove 12a in the longitudinal direction is provided at the center of the width direction on the lower surface of 2.

A substantially rhombus-shaped rear end portion 22 penetrating perpendicularly to the upper surface 18 and the lower surface 20 is provided on the front end side of the head 14.
A rectangular holding hole 24 is provided closer to the holding hole.
As shown in FIG. 4, the holding hole 24 is located on the axis X-
X 'is a target shape, and inclined wall portions 26, 28 inclined at 60 ° with respect to the axis XX'
And a distal end wall 30 perpendicular to the axis XX 'adjacent to the inclined walls 26 and 28 at the distal end. Walls 32, 34 are provided adjacent to the inclined walls 26, 28, respectively, near the rear end 22, and the widths of the inclined walls 26, 28 (up and down widths in FIG. A rectangular depression 66 having a width much smaller than that of ()) is provided.

The head 14 has a rectangular upper surface 18 at a position closer to the rear end 22 than the holding hole 24.
A rectangular hole 38 penetrating vertically through the lower surface 20 is provided. As shown in FIG. 2, there is provided a shaft hole 36 penetrating from the recess 66 of the holding hole 24 to the long groove 12a of the handle 12 at the rear end 22 of the head 14 along the axis XX 'of the head 14. ing.

An adjustment bolt 42 is inserted through the shaft hole 36 so as to be movable in the axial direction, and one end of the adjustment bolt 42 projects into the holding hole 24.
The other end protrudes below the handle 12 from the rear end 22 of the head 14 through a long groove 12 a at the base of the handle 12. A rectangular contact member 58 perpendicular to the axis XX 'is fixed to one end of the adjustment bolt 42 by a pin 56 so as not to rotate. The contact member 58 is dimensioned to be able to advance and retreat in the recess 66.

A screw surface 42a is provided on the outer periphery of the adjustment bolt 42.
Are provided, and one groove 46 is provided in the axial direction. Then, the holding hole 24 of the head 14 and the rectangular hole 38
Pin 48 screwed into the screw hole 50 on the lower surface 20 side of the intermediate portion of
Are engaged with the groove 46 of the adjustment bolt 42 to prohibit rotation. Further, the rotary operation body 40 screwed to the adjustment bolt 42 is located in the rectangular hole 38, and the upper end slightly protrudes upward from the rectangular hole 38.

Accordingly, when the rotary operation body 40 is rotated in any direction, the rotation of the adjustment bolt 42 screwed thereto is prohibited by the pin 42, and the adjustment bolt 42 is moved along the shaft hole 36 in either the left or right direction. Moving. Therefore, as shown in FIG. 6, the bolt head 80 is inserted into the holding hole 24 of the head 14 of the wrench 10, and the rotating operation body 40 is rotated according to the size of the bolt head 8 to move the adjustment bolt 42 to the left. Then, the hexagonal sides 84, 82, 86 of the bolt head 80 are sandwiched between the inclined walls 26, 28 and the abutting member 58, respectively, and the handle 12 is twisted to thereby tighten the bolt head 8.
0 can be rotated.

The handle 12 is inclined obliquely upward from the head 14 and has a long groove 12a on the lower surface, so that the adjustment bolt 42 can freely advance rightward without being obstructed by the handle 14. , The holding hole 24 is the handle 1
Since the concave portion 66 is provided at the second position, the adjusting member 42 is sufficiently long so that the contact member 58
From the position where it contacts the recess 66 at the right end of the
A very long distance to the abutment near the left end of 8 can be moved axially.

Therefore, a bolt head larger than that shown in FIG. 6 can be pinched and rotated. On the contrary, as shown in FIG. 5, an extremely small nut 70 is attached to the tips of the inclined walls 26 and 28 and the tip wall 30. Each side 74 of the nut 70,
It is also possible to rotate the small nut 70 by pushing the contact members 72 and 73 to make the contact member 58 largely advance to the left to contact the side 76.

[0017]

As described above, in the wrench of the present invention, the handle 12 is inclined with respect to the axis of the head so as not to hinder the movement of the adjusting bolt 42 from above the rear end 22 of the head 14. The contact member 58 is provided in the holding hole 24.
Can move back and forth in the recessed portion 66, so that the moving range of the contact member 58 can be increased, so that the range in which the dimensions of the nut and bolt head can be increased can be significantly increased. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a plan view of a main part of the embodiment of FIG. 1;

FIG. 5 is a plan view showing a method of using the present invention.

FIG. 6 is a plan view showing a method of using the present invention.

FIG. 7 is a plan view of a first example of a conventional wrench.

FIG. 8 is a side view of a second example of a conventional wrench.

FIG. 9 is a bottom view of a second example of the conventional wrench.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wrench 12 Handle 14 Head 24 Holding hole 26 Inclined wall 28 Inclined wall 36 Shaft hole 40 Rotating operation body 42 Adjusting bolt 46 Engagement groove 58 Contact member

Continuation of the front page (56) References JP-A 63-201061 (JP, U) JP-A 6-21854 (JP, U) JP-A 63-179065 (JP, U) JP-A 49-6292 (JP) , U) Actually open 1979-150595 (JP, U)

Claims (1)

(57) [Claims] 1. A head (14), and an inclined wall (26) which is provided near the tip of the head (14) and penetrates perpendicularly to the head plane, and which is symmetrical with respect to the head axis on the tip side. (28) and a holding hole (24) having a depression (66) on the side of the head rear end (22).
And an operation hole (3) penetrating perpendicularly to the head plane near the head rear end (22) of the head (14).
8); and a shaft hole (36) penetrating in the head axis direction from the recess (66) of the holding hole (24) to the head rear end (22) through the operation hole (38). One end protrudes into the holding hole (24) and the other end protrudes outward from the rear end (22) of the head so as to be movable along the shaft hole (38) into the shaft hole (38). It is accommodated, and the threaded surface (42a) and the engagement groove (4
6) an adjusting bolt (42) having an abutment member (58) attached to the tip of the adjusting bolt (42) and having a size capable of moving in and out of the recess (66) of the holding hole (24); The adjusting bolt (4) is provided on the head (14).
The adjustment bolt (4) is engaged with the engagement groove (46) of (2).
2) a rotation restricting means for restricting the rotation of the adjusting bolt, which is accommodated in the operation hole (38) of the head (14), and is screwed to a screw surface (42a) of the adjusting bolt (42); (42) Shaft hole (36)
A rotating operation body (40) that moves along the head, and the head rear end (2) so as not to obstruct the adjustment bolt (42) from projecting outward from the head rear end (22).
2) A wrench provided with a handle (12) that is inclined with respect to the axis of the head near the upper end and is integrally connected to the head (14).