WO2013152611A1

WO2013152611A1 - Adjustable ratchet wrench

Info

Publication number: WO2013152611A1
Application number: PCT/CN2012/087763
Authority: WO
Inventors: 刘凤翼
Original assignee: 张家港市天华五金工具有限公司
Priority date: 2012-04-09
Filing date: 2012-12-28
Publication date: 2013-10-17
Also published as: CN202742268U

Abstract

An adjustable ratchet wrench includes a wrench body (1), a jaw (4), a worm (2) and a worm pin (3), and further includes a sliding jaw (5), a cap (6), a spring (7) and a fixing pin (8), wherein the sliding jaw (5), the spring (7), the fixing pin (8) and the jaw (4) form a jaw with a ratchet function. The sliding jaw (5) and the jaw (4) are guidedly connected at an angle through a clearance fit between a male/female guiding column (5-1) and a guiding groove (4-2). When the nut is moved clockwise, the sliding jaw (5) remains still in relation to the jaw (4) under downward pressing force so as to move the nut. When the action is finished, the wrench is pulled back anticlockwise, at which point the sliding jaw (5) is subjected to upward force, which is in the same direction as the guiding groove of the sliding jaw, such that the sliding jaw (5) is offset upward until it reaches the next face of the six faces of the nut, and the sliding jaw (5) then rebounds under the action of the spring (7), being restored to the original state and continues to move the nut clockwise to achieve the goal of working continuously.

Description

Ratchet wrench

Technical field

The present invention relates to a hand tool, and more particularly to a ratchet wrench that can be screwed with hex nuts of various sizes.

Background technique

The ratchet wrench is widely used because of its small working angle, easy to use and high efficiency. However, the single product is only used for a single size and cannot meet more size requirements. The lack of one at work can not achieve the work effect. If you want to achieve the work effect, you must bring a complete set of ratchet wrenches, which is a big burden for the user, so it is very limited in use. If a single ratchet wrench can achieve the free adjustment of the ordinary wrench, it will greatly improve work efficiency. On this basis, we have developed an adjustable ratchet wrench that combines the advantages of a ratchet wrench and a spanner wrench to complement the natural deficiencies of the two products. It not only improves work efficiency but also saves costs, and is the main direction of the future wrench.

technical problem

The invention overcomes the shortcomings of the prior art ratchet wrench, the structure of the ratchet wrench is complicated, the production cost is high, and only one size nut can not be screwed to any size hex nut, and a scheme of integrating a ratchet wrench and an adjustable wrench is provided.

Technical solution

Based on the ordinary wrench, the sliding cymbal is designed on the wrench. When using, the wrench is first adjusted to the nut size. When it is rotated, the reverse pressure is applied above the cymbal, perpendicular to the direction of movement of the sliding slot. Pressing, the sliding jaw and the wrench are integrated to achieve the effect of pulling the nut. When reversing, the sliding jaw is subjected to an upward force, which is offset upward by the force, increasing the opening distance. When the mouth surface is rotated to the opposite side of the hexagonal surface of the nut, the sliding jaw rebounds under the action of the spring, returns to the initial state and can continue to pull the nut clockwise, so that the function of the ratchet wrench can be realized. Achieve continuous work.

Beneficial effect

When the hex nut is rotated clockwise, the sliding jaw is tightly connected with the wrench to achieve the function of the nut. When reversing, the sliding outward of the sliding jaw increases the opening distance. At this time, the mouth surface of the wrench and the mouth surface of the trigger body will There is enough distance to turn the nut diagonally and turn to the other side of the hex nut. Slide the hammer back under the action of the spring to the original clamped position.

DRAWINGS

Figure 1 is a general view of the product

Figure 2 is the main mechanism view of the product

Figure 3 is a diagram of the reverse force analysis of the wrench

Figure 4 is a diagram of the force analysis of the wrench in time

Figure 5 is an exploded view of the sliding mechanism

Figure 6 is a cross-sectional view of the sliding mechanism

Figure 2: 1 wrench, 2 worms, 3 worm pins, 4 bristles, 5 sliding cymbals, 6 caps, 7 springs, 8 pins.

In Figure 5: 4-1 wrench pin hole, 4-2 wrench guide groove, 6-1 cap spring hole, 5-1 sliding 颚 guide cylinder, 5-2 sliding 颚 spring hole, 5-3 sliding 颚 guide groove on the cylinder

BEST MODE FOR CARRYING OUT THE INVENTION

Referring to FIG. 1 and FIG. 2, the ratchet adjustable wrench of the present invention comprises the same wrench 1 as the ordinary wrench, the worm 2; the worm 2 is mounted in the trigger body 1 through the worm pin 3; and further comprises an end portion of the trigger body 1 A U-shaped opening and a wrench 4 that slides laterally along the opening; the worm 2 can adjust the sliding of the wrench 4 to loosen or tighten the object.

Referring to FIG. 5 and FIG. 6 , the ratchet wrench of the present invention is provided with a sliding jaw 5 on the inner side of the opening of the wrench 4 , and the wrench 4 and the sliding jaw 5 are connected by the male and female guiding column groove structure, and the sliding jaw 5 is disposed below the sliding jaw 5 a guide post 5-1 parallel to the sliding jaw 5; a guide groove 4-2 in the opening direction matching the guide post 5-1 is provided on the wrench 4, and the guide post 5-1 can be in the guiding slot 4-2 Sliding inside. The guide post 5-1 is designed to be cylindrical, square cylindrical, triangular, or other cylindrical.

In order to adjust the sliding jaw 5 to better contact the holder and prevent the sliding jaw 5 from coming off the wrench 4, a spring hole 5-2 coaxial with the guide post 5-1 is disposed in the guide post 5-1 of the sliding cymbal 5, and a notch 5-3 is formed on the side wall of the guide post 5-1; A pin hole 4-1 is arranged in the wrench 4, and the end of the pin 8 protrudes through the guiding post 5-1 along the notch 5-3 of the guiding post 5-1 to the spring hole to end against the spring end. And can move on the missing slot 5-3 The spring 7 is in the spring hole 5-2 of the sliding jaw 5, one end is connected to the bottom of the spring hole 5-2, and the other end is held by the pin 8 to achieve the anti-off effect.

Referring to Figure 5, the pin 8 blocks At one end of the spring 7, the spring 7 slides in the spring hole 5-2 of the sliding jaw 5, the guiding post 5-1 of the sliding jaw 5 in the guiding groove 4-2 on the wrench 4, and in operation, the pin 8 can follow The notch 5-3 on the guide post 5-1 moves, and the lower end of the cap 6 closely fits the upper end of the spring hole 5-2 of the sliding jaw 5 to cover the spring hole 5-2.

See Figure 3 and Figure 4 for further use.

When the wrench is rotating forward, the reverse pressure is applied above the sliding jaw 5, perpendicular to the direction of movement of the guiding groove 4-2, at which time the sliding jaw 5 is pressed without relative displacement, and the sliding jaw 5 is integrated with the wrench 4. , to achieve the effect of the ordinary wrench to pull the nut.

When the wrench is reversed, the sliding jaw 5 is subjected to an upward force, which is offset upward by the force, increasing the opening distance. When the mouth surface is rotated to the opposite side of the hexagonal surface of the nut, the sliding jaw 5 rebounds under the action of the spring 7, returns to the initial state and can continue to pull the nut in time.

In Fig. 1, in addition to the wrench is an ordinary wrench construction, the sliding jaw 5, the cap 6, the spring 7, the pin 8 and the wrench 4 constitute a ratchet function of the wrench.

In Fig. 5, the springs 7 are respectively supported by the pins 8 and the spring holes 5-2 of the sliding jaws so that they can only move within the spring holes 5-2, and the guide grooves of the sliding cylinders 5-1 on the wrenches 4-2 slides inside, and the lower end of the cap 6 closely matches the upper end of the spring hole 5-2 of the sliding jaw.

In FIG. 4, when the wrench is rotating forward, the reverse pressure is applied above the sliding jaw 5, perpendicular to the direction of movement of the sliding slot, at which time the sliding jaw is compressed without relative displacement, and the sliding jaw 5 is coupled with the wrench 4. Integral to achieve the effect of the ordinary wrench to pull the nut.

In Figure 3, when the wrench is reversed, the sliding jaw 5 is subjected to an upward force, which is offset upward by the force, increasing the opening distance.

When the mouth surface is rotated to the opposite side of the hexagonal surface of the nut, the sliding jaw 5 rebounds under the action of the spring 7, returns to the initial state and can continue to pull the nut in time.

Embodiments of the invention

Industrial applicability

Sequence table free content

Claims

A ratchet wrench, including a plate body, a wrench, a worm and a worm pin, and a sliding jaw, a cap, a spring, and a fixing pin. The sliding jaw, the spring, the fixing pin and the wrench constitute a ratcheting function, and the sliding jaw is at an angle with the wrench through the male and female guiding column and the guiding slot clearance fit guiding connection; when the nut is pulled in time, The sliding jaw is held down by the downward pressing force and the wrench, so that the nut is pulled. After the action is completed, the wrench is pulled counterclockwise, and the sliding jaw is subjected to an upward force, which is in the same direction as the sliding jaw guiding groove. After the sliding jaw is stressed, it will be offset upward until it is offset to the next surface of the hexagonal surface of the nut. At this time, the sliding jaw rebounds under the action of the spring, and the initial state is restored, and the nut can be continuously pulled to achieve continuous operation. .
A ratchet monkey wrench according to claim 1, wherein one end of the spring is abutted by a pin on the wrench, and the other end is connected to the bottom of the sliding cymbal guide cylindrical spring hole to achieve the effect of resetting.
A ratchet wrench according to claim 1, wherein the sliding jaw is connected to the guide of the wrench to achieve an upward and downward shifting effect.
A ratchet monkey wrench according to claim 1, wherein the sliding jaw is located on the wrench, and the mechanism is also suitable for the jaw clamping surface.
The ratchet wrench according to claim 4, wherein the grip or the gripping surface of the trigger is a smooth surface, a micro serrated surface or a concave and convex surface.