TW202003165A - Adjustable wrench with ratchet-like effect - Google Patents

Abstract

This invention relates to an adjustable wrench, comprising an L-shaped rod, a swingable jaw, an adjustment seat. The L-shaped rod has a short section formed with a fixed jaw. The fixed jaw has a face to be attached with a side of a nut. The swingable jaw has two faces arranged at an angle of about 120 degrees to form an indentation. The adjustment seat on which the swingable jaw is disposed is movably mounted on a long section of the L-shaped rod, thereby allowing a gap between the fixed jaw and the swingable jaw to be adjusted. In particular, the swingable jaw is pivotably mounted on the adjustment seat, and with respect to the fixed jaw. When the face of the fixed jaw is attached to the side of the nut, the two faces of the swingable jaw hold a corner of the nut to allow forward pivoting of the wrench. Reverse-swing of the swingable jaw makes the two faces of the swingable jaw detach away from the corner of the nut, which allows the wrench to be pivoted reversely and easily.

Description

Adjustable wrench with ratchet function

The invention relates to an adjustable wrench, especially an adjustable wrench with a ratchet function.

Generally speaking, wrenches are used to turn bolts, nuts and other objects that are difficult to turn by hand. There are many types of wrenches, such as open-end wrenches, adjustable wrenches and socket wrenches. However, tools such as pliers or pliers are usually not considered wrenches, except for pipe wrenches (also known as pipe wrenches), which have hard teeth on both sides of the movable jaw that can clamp smooth pipe walls. It is used to rotate the pipe, as shown in Taiwan Patent No. 493505 or M344224. However, pipe wrenches with adjustable jaws, such as pipe wrenches, can barely be used to fasten hexagonal threaded fasteners such as bolts and nuts, but they do not have a ratcheting effect, making it more difficult to reverse the pipe wrench.

The present invention provides an adjustable wrench which has the form of a pipe wrench but is mainly used to fasten bolts, nuts and other fasteners (collectively referred to as nuts underneath). More particularly, the adjustable wrench of the present invention has a ratcheting function, which can make the reverse rotation of the wrench more smoothly.

The adjustable wrench of the present invention is for turning a nut. Generally speaking, the nut has six sides around it, including a first side and a second side parallel to each other, and a third side adjacent to the second side. The adjustable wrench of the present invention includes an L-shaped lever, a swinging jaw, and an adjusting seat. The L-shaped lever has a short rod and a long rod. The short rod forms a fixed jaw, and the fixed jaw has a contact surface of the vertical long rod for the first side of the nut to abut. The swinging jaw has two abutting walls. The two abutting walls together define a concave angle of 120 degrees. The swinging jaw and the fixed jaw jointly define a jaw mouth to receive the nut. The adjusting base is movably sleeved on the long rod of the L-shaped lever, wherein the adjusting base carries the swinging jaw to adjust the size of the jaw mouth, and the swinging jaw is pivotally arranged on the adjusting base to swing relative to the fixed jaw. Wherein, when the abutment surface of the fixed jaw abuts on the first side of the nut, the two abutment walls of the swinging jaw can only clamp the second and third sides of the nut, respectively, to allow the wrench to turn the nut forward; The reverse swinging of the swinging jaw can cause the two swinging jaws to retreat from the second and third sides of the nut against the wall to allow the wrench to reversely reverse.

Preferably, the adjusting base includes a screw ring, and the threaded teeth of the screw ring and a tooth surface of the long rod of the L-shaped lever are screwed with each other, thereby rotating the screw ring can adjust the adjusting base forward or backward relative to the L-shaped lever mobile.

Preferably, the end of the long lever of the L-shaped lever opposite to the fixed jaw is formed with a grip.

Preferably, the adjusting base has a body part and an extension part extending from the body part, the body part is sleeved on the long rod of the L-shaped lever, the extension part defines a chamber, which has an opening towards the fixed jaw, The swinging jaw is set at the opening of the chamber.

In an embodiment, the adjustable wrench of the present invention further includes an elastic member, the elastic member is disposed in the chamber of the extension portion of the adjustment base, and one end of the elastic member is positioned at the extension portion of the adjustment base, and the other end is pressed against the swinging jaw A back side facing away from the concave corner. Preferably, the back side of the swinging jaw defines a limiting card slot, and the limiting card slot receives the other end of the elastic member.

In another embodiment, the adjustable wrench of the present invention further includes a movable top post and an elastic member provided in the receiving chamber of the extension of the adjusting seat, wherein one end of the movable top post is positioned on an inner wall of the receiving chamber, The other end is swingably supported on the back side of the swinging jaw opposite the concave angle; and the elastic member is elastically pressed against the other end of the movable top column and the other inner wall of the chamber. Preferably, the back side of the swinging jaw defines a limiting card slot, and the limiting card slot receives the end of the movable top post.

1 to 4 show a preferred embodiment of the adjustable wrench 100 of the present invention. The adjustable wrench 100 is mainly used for turning a nut 9 (FIG. 4 ). Generally speaking, the nut 9 has six sides around it, which include a first side 91 and a second side 92 parallel to each other, and a third side 93 adjacent to the second side 92.

Specifically, the adjustable wrench 100 of the present invention generally includes an L-shaped lever 1, an adjustment seat 2, and a swinging jaw 3. Among them, the L-shaped lever 1 has a short rod 11 and a long rod 12 that are integrally connected and intersect at 90 degrees, wherein the short rod 11 constitutes a fixed jaw 11, and the end of the long rod 12 facing away from the fixed jaw 1 is formed with a Grip 120. The swing jaw 3 and the fixed jaw 11 jointly define a jaw opening 10 to receive the nut 9. The fixed jaw 11 has a contact surface 110 of the vertical long rod 12 for the first side surface 91 of the nut 9 to contact. The swinging jaw 3 has two abutment walls 31 and 32 which define a concave angle 30 at 120 degrees.

The adjusting base 2 is movably sleeved on the long rod 12 of the L-shaped lever 1, and the adjusting base 2 carries the swinging jaw 3, whereby the swinging jaw 3 can be displaced along with the adjusting base 2 to adjust the size of the jaw mouth 10. More specifically, the swinging jaw 3 is pivotally provided on the adjusting base 2, so it can also swing relative to the fixed jaw 11 to provide a ratchet-like effect, as described in detail later.

More specifically, the adjusting base 2 has a body portion 20, an extension portion 21 extending from the body portion 20, and a screw ring 22 provided on the body portion 20. The body portion 20 is sleeved on the long rod 12 of the L-shaped lever 1, and the threaded teeth of the screw ring 22 and a tooth surface 121 of the long rod 12 of the L-shaped lever 1 are screwed with each other, thereby rotating the screw ring 22 The adjustment seat 2 moves forward or backward relative to the L-shaped lever 1, that is, the size of the jaw 10 is adjusted. The extension 21 defines a chamber 210. The front surface of the chamber 210 is covered by a cover 6, and the chamber 210 further has an opening (not shown in the figure) toward the fixed jaw 110, and the swinging jaw 3 is located at the opening of the chamber 210 of the extension 21.

In this embodiment, the adjustable wrench 100 further includes a movable jack 5 and an elastic member 4 disposed in the chamber 210 of the extension 21 of the adjustment base 2. Wherein, one end of the movable top post 5 is positioned on an inner wall of the chamber 210, and the other end is swingably supported on a back side 33 of the swing jaw 3 facing away from the concave angle 30; and the elastic member 4 is an elastic top Between the other end of the movable top post 5 and the other inner wall of the chamber 210. In this example, the extension portion 21 of the adjusting base 2 further defines an arc groove 211 and a positioning groove 212 on the inner wall of the accommodating chamber 210 respectively corresponding to the movable top post 5 and the elastic member 4. Wherein, the root end 51 of the movable top post 5 is formed with a cylindrical surface, and is correspondingly inserted into the circular arc groove 211 of the extension portion 21, whereby the free end 52 of the movable top post 5 can swingably support the back of the swinging jaw 3 Side 33. In addition, the elastic member 4 elastically abuts against the free end 52 of the movable jack 5 to maintain the swinging jaw 3 in a clamping state. Preferably, the back side 33 of the swinging jaw 3 defines a limiting slot 330, and the limiting slot 330 receives the free end 52 of the movable top post 5.

As shown in FIG. 4A, when the abutting surface 110 of the fixed jaw 11 abuts on the first side surface 91 of the nut 9, the two abutting walls 31 and 32 of the swinging jaw 3 can only clamp the second and the first of the nut 9 respectively Three sides 92, 93 to allow the wrench 100 to turn the nut 9 forward. It is worth noting that, since the movable top post 5 is supported between the swing jaw 3 and the inner wall of the chamber 210, when the wrench is turned forward, the swing jaw 3 and the extension 21 are integrated into one body to improve the structural strength , Can increase the twisting torque.

4B to 4D are schematic diagrams showing the state of the wrench 100 reversely reversed by 15 degrees, 45 degrees, and 60 degrees, respectively. As shown in the figure, since the swinging jaw 3 can swing about a pivot 23 on the extending portion 21, when the wrench 100 reversely reverses, the nut 9 will not be driven to reverse accordingly. On the contrary, the swinging jaw 3 can swing backwards until the two abutting walls 31, 32 are retracted away from the second and third sides 92, 93 of the nut 9, so it will not hinder the reverse rotation of the wrench 100 at all until the wrench 100 The fixed jaw 11 advances to the next side 94 that fits to the nut 9, as shown in FIG. 4D, so it can function like a ratchet.

FIG. 5 shows another preferred embodiment of the present invention. The structure and operating mechanism of the adjustable wrench 200 in this embodiment are substantially the same as the adjustable wrench 100 in the previous embodiment. The only difference is that the adjustable wrench 200 only There is an elastic member 4 without the aforementioned movable top post 5, so in this embodiment, the elastic member 4 is still disposed in the chamber 210 of the extension 21 of the adjustment base 2 and one end of the elastic member 4 is positioned on the adjustment base 2 The positioning groove 212 of the extending portion 21 and the other end of the positioning groove 212 of the swinging jaw 3 are pressed against the limiting groove 330 of the back side 33 of the swing jaw 3 to provide cushioning support.

FIG. 6 shows another preferred embodiment of the present invention. The structure and operation mechanism of the adjustable wrench 300 in this embodiment are substantially the same as the adjustable wrench 200 in the previous embodiment, the only difference is that the adjustable wrench 300 is not only The movable top post 5 also has no structure such as the elastic member 4, so in this embodiment, the swinging jaw 3 lacks the elastic support of the movable top post 5 and the elastic member 4, but it does not affect its function, and the adjustable wrench 300 can still be used Turn the nut in the forward direction, and retain a ratchet-like effect when reversing in the reverse direction.

100, 200, 300 ‧‧‧ adjustable wrench 9‧‧‧Nut 91‧‧‧The first side 92‧‧‧Second side 93‧‧‧The third side 1‧‧‧L-type lever 10‧‧‧jaw 11‧‧‧Short rod, fixed jaw 110‧‧‧ landing surface 12‧‧‧Long pole 120‧‧‧grip 2‧‧‧Adjustable seat 20‧‧‧Body 21‧‧‧Extension 210‧‧‧Room 211‧‧‧Circular groove 212‧‧‧Locating slot 22‧‧‧Spiral ring 3‧‧‧swing jaw 30‧‧‧Concave 31, 32‧‧‧ against the wall 33‧‧‧back 330‧‧‧Limit card slot 4‧‧‧Elastic parts 5‧‧‧Activity pillar 51‧‧‧Root end 52‧‧‧Free end 6‧‧‧cover

FIG. 1 is a schematic perspective view of a preferred embodiment of an adjustable wrench of the present invention. FIG. 2 is an exploded perspective view of the adjustable wrench of FIG. 1. FIG. 3 is a schematic side view of the adjustable wrench of FIG. 1. 4A~4D are schematic diagrams of the reverse rotation of the adjustable wrench of FIG. 1. FIG. 5 is a schematic perspective view of another preferred embodiment of the adjustable wrench of the present invention. FIG. 6 is a three-dimensional structure diagram of another preferred embodiment of the adjustable wrench of the present invention.

100‧‧‧adjustable wrench

1‧‧‧L-type lever

10‧‧‧jaw

11‧‧‧Short rod, fixed jaw

12‧‧‧Long pole

2‧‧‧Adjustable seat

3‧‧‧swing jaw

6‧‧‧cover

Claims (8)

An adjustable wrench for turning a nut with a first side and a second side parallel to each other and a third side adjacent to the second side. The wrench includes: a L Type lever with a short rod and a long rod, the short rod is formed with a fixed jaw, the fixed jaw has an abutting surface perpendicular to the long rod for the first side of the nut to abut; a swinging jaw, with Two abutment walls, the two abutment walls together define a concave angle of 120 degrees, the swinging jaw and the fixed jaw jointly define a jaw mouth to receive the nut; and an adjustment seat, movably sleeved on the L A long lever of the type lever, wherein the adjusting base carries the swinging jaw to adjust the size of the jaw opening, and the swinging jaw is pivotally arranged on the adjusting base and can swing relative to the fixed jaw; wherein, when the fixed jaw When the abutting surface of the abuts against the first side of the nut, the two abutting walls of the swinging jaw can just clamp the second and third sides of the nut, respectively, to allow the wrench to turn the nut forward; The reverse swinging of the swinging jaw can cause the two abutting walls of the swinging jaw to retreat away from the second and third sides of the nut to allow the wrench to reversely reverse. The adjustable wrench as described in item 1 of the patent application scope, wherein the adjustment seat includes a screw ring, the threaded teeth of the screw ring and a tooth surface of the long rod of the L-shaped lever are screwed with each other, thereby rotating the The screw ring can adjust the adjustment seat to move forward or backward relative to the L-shaped lever. The adjustable wrench as described in item 1 of the patent application scope, wherein the long rod of the L-shaped lever forms a grip at the end opposite to the fixed jaw. The adjustable wrench as described in item 1 of the patent application scope, wherein the adjustment base has a body portion and an extension portion extending from the body portion, the body portion is sleeved on the long lever of the L-shaped lever, the The extending portion defines a chamber, which has an opening toward the fixed jaw, and the swinging jaw is provided in the opening of the chamber. The adjustable wrench as described in item 4 of the patent application scope further includes an elastic member, the elastic member is provided in the chamber of the extension part of the adjustment base, and one end of the elastic part is positioned at the extension part of the adjustment base, and the other One end is pressed against a back side of the swinging jaw back to the concave angle. The adjustable wrench as described in Item 5 of the patent application scope, wherein the back side of the swinging jaw defines a limiting slot, and the limiting slot receives the other end of the elastic member. The adjustable wrench as described in item 4 of the patent application scope further includes a movable top post and an elastic member provided in the receiving chamber of the extension of the adjusting seat, wherein one end of the movable top post is positioned in the receiving chamber An inner wall, and the other end is swingably supported on a back side of the concave corner of the swinging jaw back; and the elastic member is elastically pressed against the other end of the movable top column and the other of the chamber Between an inner wall. The adjustable wrench as described in item 7 of the patent application scope, wherein the back side of the swinging jaw defines a limiting slot, and the limiting slot receives the end of the movable top post.

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