WO2017166794A1

WO2017166794A1 - Adjustable spanner with asymmetric double-splayed jaw and ratchet function

Info

Publication number: WO2017166794A1
Application number: PCT/CN2016/102972
Authority: WO
Inventors: 刘玉林
Original assignee: 刘玉林
Priority date: 2016-04-01
Filing date: 2016-10-22
Publication date: 2017-10-05
Also published as: CN205630430U

Abstract

An adjustable spanner with an asymmetric double-splayed jaw and a ratchet function, comprising a spanner body (1). The top of the spanner body (1) is provided with a jaw formed by a left jaw piece and a right jaw piece. Opposite sides of the two jaw pieces are each provided with a splayed cambered surface (4), so that the jaw pieces are in contact with a nut at four sides. The two opposite cambered surfaces are each provided with an arc-shaped groove (5) in the middle, so as to prevent sharp corners of the nut from being damaged. Thus, at least four surfaces of a nut are under stress, so that the average stress on each surface is reduced; moreover, when a nut fastened under the same condition is detached, the surfaces of the nut and the spanner are not easy to be damaged.

Description

Adjustable wrench with asymmetrical double splayed jaws and ratchet function

Technical field

The utility model belongs to the technical field of hardware tools, and relates to an adjustable wrench with an asymmetric double-eight-shaped jaw and a ratchet function.

Background technique

The manual common adjustable wrench is a common tool used by people to remove nuts or bolts. The jaw of a common adjustable wrench is linear. When a nut or bolt is removed by a common adjustable wrench, the nut or bolt is subjected to two contact faces. When the force is large, it is easy to cause yaw and slip, so that the corners of the nut or bolt are easily deformed, and it is difficult or inefficient to disassemble a relatively firm nut or bolt. When disassembling the air-conditioning duct, it is easy to yaw, the suspended pipeline is more difficult to disassemble, the symmetrical double V-shaped jaw wrench, its double V-shaped adjustable wrench, when the nut or bolt is removed, the nut or bolt becomes four contacts. The surface is stressed and the force is more uniform. When the relatively strong nut or bolt is disassembled, it will not slip, not yaw, and easy to disassemble. The suspended pipe is also disassembled, but the symmetrical double V-shaped jaws are disassembled with nuts, bolts or suspended. In many cases, it is always necessary to adjust the opening nut frequently, which also makes it inefficient. Other types of ratchet adjustable wrenches also have complex structures, high cost, and are not easy to popularize, or the parts of the nut or bolt are far from the front end of the jaws, or the design of the bayonet attachment is limited, and many nuts or bolts cannot be removed, so that the ratchet activities are enabled. The scope of application of the wrench is limited. On September 21, 2015, the applicant applied for a utility model patent with the patent name of 2015207309251 with the asymmetric double V-shaped jaw and ratchet function, but in practice When used, when the special tightening nut is encountered, the corners of the nut will be damaged and the slip will be caused, and the specially tightened nut can not be removed. It also causes damage to the corners of the nut.

Utility model content

In order to overcome the above disadvantages of the prior art, the utility model provides an adjustable wrench with an asymmetric double-eight-shaped jaw and a ratchet function, which can disassemble the most fastening nut without damaging the corner of the nut, and has a structure. Simple, low cost, and does not damage the corners of the nut. The technical solution adopted by the utility model to solve the technical problem thereof is: an adjustable wrench with an asymmetric double-eight-shaped jaw and a ratchet function, including a wrench body, and a jaw is arranged on the top of the wrench body, and the jaws are provided by the left and right sides. A pair of jaws are formed, and a curved surface of a figure-eight shape is arranged on one side of the two jaws, so that the jaws and the nut form a contact of four faces, and an arc is respectively arranged in the middle of the two opposite arc faces. Shaped grooves to avoid damage to the nut tip.

The jaw includes a movable jaw and a fixed jaw, the movable jaw and the fixed jaw have a ratchet structure, and the two jaws enclose a space of a semi-circular shape with a front end parallel rear end to realize the movable wrench to disassemble the nut and the bolt, and the parallel front end The loosening nut is locked, and the large semicircular space at the rear end realizes the positive and negative ratchet functions of the wrench.

The jaws are provided with serrations or no serrations, so that the reference distance of the clamping nut can be ensured.

The V-shaped groove of the movable jaw is smaller than the V-shaped groove on the fixed jaw.

The movable jaw can be moved laterally to change the size of the jaws, and the other fixed jaw can use the ratchet principle to move the nut and the bolt in an oblique direction, thereby realizing the reverse movement of the adjustable wrench and realizing the ratchet function.

The utility model has the beneficial effects that the nut has at least four nut plane forces, not the screw The female corner is stressed, the more flat force of the nut is applied, so that the average force of each plane is reduced, and the nut of the same condition is loosened. The nut plane and the wrench are not easily damaged, and it can not damage the corner of the nut. At the same time, it can disassemble the most rigid nut, has the characteristics of simple structure, low cost, no damage to the corner of the nut, etc. It is especially suitable for tightening the nut, no need to worry about the nut that cannot be disassembled, and there is no need to worry about the corner of the nut when the nut is disassembled. It is.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

In the figure: 1-wrench body, 2-moving jaws, 3-fixing jaws, 4-arc surface, 5-groove, 6-ratchet, 7-tooth.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , an adjustable wrench having an asymmetric double-eight-shaped jaw and a ratchet 6 function includes a wrench body 1 , and a jaw is arranged on the top of the wrench body 1 , and the jaw is surrounded by two left and right jaws. The two jaws are provided with a figure-shaped arc surface 4 on one side, so that the jaws and the nut form a four-face contact, and a circular arc-shaped groove 5 is respectively arranged in the middle of the two opposite curved faces 4. To avoid damage to the nut tip.

The jaws include a movable jaw 2 and a fixed jaw 3, and the movable jaw 2 and the fixed jaw 3 have a ratchet 6 structure, and the two jaws define a semicircular space with a front end parallel to the rear end larger than the nut to achieve the activity. The wrench removes the nut and the bolt, and the outer side of the movable jaw 2, if the tooth 7 is provided, the side has the function of the pipe wrench.

The jaws are provided with serrations 7, so that the clamping can be ensured (the nut has a reference distance.)

The V-shaped groove 5 of the movable jaw 2 is smaller than the V-shaped groove 5 on the fixed jaw 3.

The movable jaw 2 can move in the lateral direction to change the size of the jaws, and the other fixed jaw uses the principle of the ratchet 6 to move the nut and the bolt in an oblique direction, and the rear end of the jaw is slightly smaller than the nut and the bolt. The large space enables the clockwise or counterclockwise movement of the adjustable wrench to realize the function of the positive and negative ratchets 6. (In use, first adjust the movable jaw 2, and use the rear end to clamp the nut. At this time, only the function of the most tightening nut is removed. After the loose nut is removed, the movable jaw 2 is adjusted to make the front end of the two jaws easy. By holding the nut, the ratchet function can be realized by using a space where the rear end of the two jaws is slightly larger than the nut.

The utility model increases the force of the four nut planes, reduces the average force of each nut plane, and has the ratchet function, and changes the common problem that the movable wrench makes the two corners of the nut and the bolt vulnerable to slipping, and can It can remove the most tight nut while damaging the corner of the nut. It has the characteristics of simple structure, low cost and no damage to the corner of the nut. It is especially suitable for tightening the nut. It does not need to worry about the nut that cannot be removed, and it is not necessary to disassemble when removing the nut. The corner of the bad nut is gone.

Claims

An adjustable wrench with an asymmetric double-eight-shaped jaw and a ratchet function, comprising a wrench body, characterized in that: a jaw is arranged on the top of the wrench body, and the jaw is surrounded by two left and right jaws, in two jaws The sides of the mouth are provided with a figure-shaped arc surface on one side, so that the jaws and the nut form a four-face contact, and a circular arc-shaped groove is respectively arranged in the middle of the two opposite arc faces, thereby avoiding damage to the nut tip. angle.
The adjustable wrench with asymmetric double-eight-shaped jaw and ratchet function according to claim 1, wherein the jaw comprises a movable jaw and a fixed jaw, the movable jaw and the fixed jaw have a ratchet structure, and two The jaws are surrounded by a semi-circular space with parallel front ends and rear ends to realize the removal of nuts and bolts by the movable wrench. The parallel front ends are locked by the loose nut rotation, and the large semicircular space at the rear end realizes the positive and negative ratchet functions of the wrench.
The adjustable wrench with asymmetric double-eight-shaped jaws and a ratchet function according to claim 1, wherein the jaws are provided with or without serrations, thereby ensuring a reference distance of the clamping nut.
The adjustable wrench with asymmetric double-eight-shaped jaw and ratchet function according to claim 1, wherein the V-shaped groove of the movable jaw is smaller than the V-shaped groove on the fixed jaw.
The adjustable wrench with asymmetric double-eight-shaped jaw and ratchet function according to claim 1, wherein the movable jaw can move laterally to change the size of the jaw, and the other fixed jaw uses the ratchet principle. The nut and the bolt can be moved in the oblique direction, thereby realizing the reverse movement of the movable wrench and realizing the ratchet function.