CN102950557B - Multipurpose wrench - Google Patents

Abstract

A multipurpose wrench provided by the invention comprises screw rods, a screw disk and jaws. The structure design is novel. The six adjustable wing screw rods are adopted to control the jaws. The multipurpose wrench is suitable for screwing and unscrewing regular hexagon socket head cap screws with counterbores greater than 4.7mm and less than 15mm in diameter and regular hexagon head cap bolts with cap circumcircles greater than 5.7mm and less than 15mm in diameter. The multipurpose wrench is convenient to carry, operation can be carried out without requiring the replacement of the wrench jaws, and nuts or screws can be more easily unscrewed or screwed in a shorter time. The multipurpose wrench is easy to operate and convenient and quick to carry and assemble, and has other advantages.

Description

A multipurpose wrench

technical field

The invention relates to a multipurpose wrench.

Background technique

A wrench is a hand tool that uses the principle of leverage to turn bolts, screws, nuts, and other openings or sockets that are threaded to hold bolts or nuts. The wrench is usually formed with a clamping handle at one or both ends of the handle to apply an external force to the handle to twist the bolt or nut to hold the opening or sleeve of the bolt or nut. When in use, an external force is applied to the shank in the direction of thread rotation, so that the bolt or nut can be twisted. Wrenches are basically divided into two types, dead wrench and live wrench. Dead wrench: one or both ends are made with openings of fixed size, which are used to twist nuts or bolts of a certain size. Adjustable wrench: The width of the opening can be adjusted within a certain size range, and it can screw bolts or nuts of different specifications. However, both the dead wrench and the live wrench have certain disadvantages. The dead wrench has too many specifications, and each wrench can only be used for one or two types of screws, so the scope of application is relatively narrow; Let the phenomenon of the outer hexagonal round head, and can not be used for inner hexagonal screws.

Contents of the invention

In order to solve the defects of the prior art, the object of the present invention is to provide a multipurpose wrench.

A multi-purpose wrench, including a disc, six identical screws and chucks; the disc is an annular column, and the side of the disc is evenly distributed with six holes with the same threaded holes on the same plane, and six identical screws They are respectively placed in the six holes and can be rotated to advance and retreat, thereby driving the chuck to advance and retreat;

One end of each screw has horns, and the other end is a smooth round rod with a convex limit ring at one end and an annular limit groove at the top;

Each card head includes an outer card slot seat and an inner card head seat; the outer card slot seat is an integrally formed part of two cuboids with different thicknesses, and one end of the thin cuboid has a V-shaped card with a vertex angle of 120° Slots, six identical V-shaped card slots can be respectively clamped on the six corners of the positive hexagonal screw head, and the screw can be tightened or loosened by rotation; the upper part of the thick rectangular parallelepiped has a horizontal threaded through hole, the screw One end of the outer card slot seat passes through the through hole, one end surface of the outer card slot seat is limited by the convex limit ring, and the other end surface of the outer card slot seat is limited by the limit spring pin placed in the limit groove, ensuring that the outer card slot The seat cannot move longitudinally along the screw rod 2, and the smooth round rod of the screw rod can rotate in the through hole; the upper surface of the thick cuboid of the outer card slot seat has a threaded blind hole perpendicular to the upper surface,

The inner chuck seat is a part integrally formed by a cuboid and a regular triangular prism with the same thickness and an apex angle of 60°; there is also an inner chuck at the top of the regular triangular prism with a vertex angle of 60°, which is superimposed on the For the small quadrangular prism above the regular triangular prism, one vertex angle of the small quadrangular prism is 60°, and the opposite vertex angle is 120°; the cuboid of the inner chuck seat has a shaft hole perpendicular to the surface of the cuboid and through; A fastening bolt with a thread on the top and the rest of the polished rod is placed in the shaft hole of the inner chuck seat and the threaded blind hole of the outer chuck seat to fix the outer chuck seat and the inner chuck seat, and the inner The chuck seat can rotate around the fastening bolt polished rod. When it rotates 180°, the 6 small quadrangular prisms can converge at the center, so that the 120° apex end of the small quadrangular prism of the inner chuck is just placed in the inner regular hexagon In the six corners of the groove of the screw head, tighten or loosen the screw by turning.

The use dynamics of a kind of multipurpose wrench provided by the present invention:

(1) When used to fasten or loosen the hexagonal screws, turn the six screw rods 2 counterclockwise to separate the six chucks from each other, and stop turning when the space of the six chucks is larger than the head of the hexagonal screw; put the multipurpose wrench Put it on the outer hexagonal screw head, and then rotate the two opposite screws 2 clockwise, the six identical V-shaped card slots 3 can be respectively stuck on the six corners of the hexagonal screw head, and then turn the disc 1 to place the hexagonal Screws are tightened or loosened.

(2) When used to fasten or loosen the hexagon socket head cap screws, rotate the six internal chuck heads 8 to converge toward the center of the circle, and the six identical internal chuck heads 4 can be placed in the head of the hexagon socket head cap screws In the groove, the 120° apex end of the small quadrangular prism of the inner chuck head 4 is just placed in the six corners of the groove of the inner hexagon screw head, and the screw is tightened or loosened by rotation.

Beneficial effects: the invention provides a multipurpose wrench, which is composed of a screw rod, a screw disk and a chuck. The structure design is novel. Six adjustable claw screws are used to control the chuck. It is suitable for tightening and loosening the screws of the inner hexagonal screw cap with the diameter of the counterbore hole greater than 4.7mm and less than 15mm and the screw of the outer hexagonal screw cap with the diameter of the circumscribed circle of the nut greater than 5.7mm and less than 15mm. It is easy to carry, and the operation can be completed without changing the wrench head, which makes loosening or tightening nuts or screws more time-saving and labor-saving. It has the advantages of simple operation, convenient and fast carrying and assembly.

Description of drawings

Figure 1 is a front view of a multipurpose wrench.

Figure 2 is a top view of a multipurpose wrench.

Figure 3 The front view of the chuck.

Figure 4 Top view of the chuck.

Figure 5 The left view of the chuck.

Figure 6 Right side view of the chuck.

Figure 7 is a perspective view of the chuck.

FIG. 8 is a schematic partial cross-sectional view of the six small square prisms 4 of the inner clamping heads 4 locking the head of a regular hexagonal screw.

FIG. 9 is a schematic partial cross-sectional view of the six V-shaped slots 3 locking the heads of the external hexagonal screws.

FIG. 10 is a partial cross-sectional schematic diagram of the connecting part between the screw rod 2 and the outer card slot seat 7 .

Detailed ways

Embodiment 1 A multi-purpose wrench, as shown in Figure -10, includes a disk 1, six identical screws 2 and chucks; the disk 1 is an annular column, and the side of the disk 1 is evenly distributed with six hole centers In the same threaded hole on the same plane, six identical screw rods 2 are respectively placed in the six holes and can be rotated to advance and retreat, thereby driving the chuck to advance and retreat;

One end of each screw rod 2 has horns, and the other end is a section of smooth round rod, which has a convex limit ring 10 at one end and an annular limit groove 9 at the top;

Each chuck includes an outer card slot seat 7 and an inner card slot seat 8; the outer card slot seat 7 is an integrally formed part of two cuboids with different thicknesses, and one end of the thin cuboid has an apex angle of 120°. V-shaped card slot 3, six identical V-shaped card slots 3 can be respectively stuck on the six corners of the positive hexagonal screw head, and the screw can be tightened or loosened by rotation; the upper part of the thick rectangular parallelepiped has a horizontal thread Through hole 6, one end of screw rod 2 passes through this through hole 6, one end face of outer card slot seat 7 is limited by convex limit ring 10, and the other end face of outer card slot seat 7 is placed in limit groove 9 The limit spring pin is used to limit the position, ensuring that the outer card slot seat 7 cannot move longitudinally along the screw rod 2, and the smooth round rod of the screw rod 2 can rotate in the through hole 6; the upper surface of the thick cuboid of the outer card slot seat 7 has a Blind holes with threads perpendicular to the upper surface,

The inner chuck seat 8 is an integrally formed part of a rectangular parallelepiped and a regular triangular prism with a vertex angle of 60°; there is also an inner chuck 4 at the top of the regular triangular prism with a vertex angle of 60°, and the inner chuck 4 is A small quadrangular prism superimposed on the regular triangular prism, one vertex angle of the small quadrangular prism is 60°, and the opposite vertex angle is 120°; the cuboid of the inner chuck seat 8 has an axis perpendicular to the surface of the cuboid and penetrating Hole 5; Place the threaded blind hole in the shaft hole 5 of the inner chuck seat 8 and the threaded blind hole of the outer card slot seat 7 with a fastening bolt whose top has threads and the rest is a polished rod, and connect the outer card slot seat 7 and the inner slot seat The chuck seat 8 is fixed, and the inner chuck seat 8 can rotate around the polished rod of the fastening bolt. When it rotates 180°, the 6 small quadrangular prisms can converge at the center, so that the small quadrangular prisms of the inner chuck 4 The 120° top angle end is just placed in the six corners of the groove of the inner hexagon screw head, and the screw is tightened or loosened by rotation.

The use dynamics of a kind of multipurpose wrench provided by the present invention:

(1) When used to fasten or loosen the hexagonal screws, turn the six screw rods 2 counterclockwise to separate the six chucks from each other, and stop turning when the space of the six chucks is larger than the head of the hexagonal screw; put the multipurpose wrench Put it on the outer hexagonal screw head, and then rotate the two opposite screws 2 clockwise, the six identical V-shaped card slots 3 can be respectively stuck on the six corners of the hexagonal screw head, and then turn the disc 1 to place the hexagonal Screws are tightened or loosened.

(2) When used to fasten or loosen the hexagon socket head cap screws, rotate the six internal chuck heads 8 to converge toward the center of the circle, and the six identical internal chuck heads 4 can be placed in the head of the hexagon socket head cap screws In the groove, the 120° apex end of the small quadrangular prism of the inner chuck head 4 is just placed in the six corners of the groove of the inner hexagon screw head, and the screw is tightened or loosened by rotation.

The specific technical parameters of this embodiment are as follows: a multi-purpose wrench is made of 45# steel, the surface is polished and chrome-plated, and it is suitable for hexagon socket screws and nuts with a counterbore diameter greater than 4.7mm and less than 15mm. The diameter of the circumscribed circle is greater than 5.7mm Hexagon screws less than 15mm.

Disc 1 has a thickness of 20mm, an outer diameter of 150mm, and an inner diameter of 120mm; screw rod 2 has a diameter of 5mm and a total length of 100mm, and one end with a limit ring 10 is a smooth round rod with a length of 18mm, and a limit cutting groove is 1mm wide and 1mm deep.

Outer card slot seat 7 is long 15mm, wide 10mm, and the thickness of thick cuboid is 10mm; The long 25mm of thin cuboid, wide 10mm, thickness 5mm, the top angle of V-type card groove 3 is 120 °.

The length of a cuboid of inner card head seat 8 is 20mm, and width is 10mm, and thickness is 5mm, and the side length of regular triangular prism is 10mm, and height 5 is mm.

The height of the small quadrangular prism of the inner chuck 4 is 5 mm; the cross section of the small quadrangular prism is composed of an equilateral triangle with a side length of 4 mm and an isosceles triangle with a long side length of 4 mm and an apex angle of 120°. The diameter of the shaft hole 5 of the inner chuck seat 8 is 5.2mm.

Claims (1)

1. A multi-purpose wrench, characterized in that it includes a disc (1), six identical screws (2) and chucks; the disc (1) is an annular column, and the side of the disc (1) is evenly distributed with six The cores of the four holes are the same threaded holes on the same plane, and six identical screws (2) are respectively placed in the six holes and can be rotated to advance and retreat; One end of each screw (2) is provided with horns, and the other end is a section of smooth round rod, which has a convex limit ring (10) at one end and an annular limit groove (9) at the top; Each chuck includes an outer card slot seat (7) and an inner card slot seat (8); the outer card slot seat (7) is an integrally formed part of two cuboids with different thicknesses, and one end of the thin cuboid has A V-shaped slot (3) with a vertex angle of 120°; the upper part of the thick cuboid has a horizontal threaded through hole (6), and one end of the screw (2) passes through the through hole (6), One end surface of the outer card slot seat (7) is limited by the convex limit ring (10), and the other end surface of the outer card slot seat (7) is limited by the limit spring pin placed in the limit groove (9). The smooth round rod of the screw rod (2) can rotate in the through hole (6); the upper surface of the thick cuboid of the outer card slot seat (7) has a threaded blind hole perpendicular to the upper surface, The inner chuck seat (8) is an integrally formed part of a cuboid and a regular triangular prism with the same thickness and an apex angle of 60°; there is also an inner chuck (4) at the top of the regular triangular prism with an apex angle of 60°. The chuck (4) is a small quadrangular prism superimposed on the regular triangular prism, one vertex angle of the small quadrangular prism is 60°, and the opposite vertex angle is 120°; the cuboid of the inner chuck seat (8) has a The shaft hole (5) is perpendicular to the surface of the cuboid and passes through; use a fastening bolt with a thread on the top and the rest is a polished rod to place the shaft hole (5) of the inner chuck seat (8) and the outer slot seat (7) In the threaded blind hole, fix the outer chuck seat (7) and the inner chuck seat (8), and the inner chuck seat (8) can rotate around the polished rod of the fastening bolt, when it rotates 180 °, the 6 small quadrangular prisms can converge at the center, so that the 120° apex end of the small quadrangular prism of the inner chuck (4) is just placed in the six corners of the groove of the inner hexagon screw head.