Open-end wrench structure

Abstract

An open-end wrench structure comprises a body having a handle portion and a driving portion, with the driving portion located at one end of the handle portion and including a driving slot. The bottom of the driving slot is provided with a first abutting surface and a second abutting surface connected to each other, forming a predetermined angle. A movable member is pivotally disposed within the driving slot and is rotatable between a first angle and a second angle. When the movable member rotates to the first angle, it abuts against the first abutting surface, and when it rotates to the second angle, it abuts against the second abutting surface.

Description

[Technical Field]

[0001] This invention relates to open-end wrenches, and in particular to an open-end wrench structure applicable to nuts of multiple sizes. [Previous Technology]

[0002] Note: An open-end wrench is a common hand tool mainly used for tightening or loosening nuts and bolts. The working principle of this wrench is to use its open portion (two parallel metal plates) to clamp the edge of the nut, and apply torque by rotating it. Open-end wrenches have a simple structure and flexible use, making them suitable for most common repair and assembly work. Due to their simple design and lightweight nature, open-end wrenches have become a commonly used tool in fields such as home décor, automotive repair, and construction.

[0003] Traditional open-end wrenches were usually designed with fixed sizes, meaning each wrench could only be used for nuts or bolts of a specific size. While this design was simple, it also brought many inconveniences to use. Especially in equipment that requires disassembly and assembly, when the sizes of nuts and bolts are diverse, traditional open-end wrenches cannot handle them all, forcing users to prepare multiple different sizes of open-end wrenches to deal with different situations.

[0004] For example, during the installation or maintenance of air conditioners, especially the copper pipe section of the outdoor unit, there are often multiple bolts and nuts that need to be fixed or removed, and these nuts may vary in size. In this case, traditional open-end wrenches face significant challenges. Installers must prepare a variety of different sizes of open-end wrenches to ensure that they can fit all the nuts, which not only increases the workload but may also affect work efficiency due to inconvenience in carrying them.

[0005] Therefore, how to provide an open-end wrench structure that can handle nuts or bolts of various sizes simultaneously without changing tools is one of the urgent issues that industry players and R&D personnel in related fields need to solve. [Summary of the Invention]

[0006] The main objective of this invention is to provide an open-end wrench structure that can loosen nuts of different sizes without changing tools.

[0007] To achieve the above-mentioned objective, the present invention provides an open-end wrench structure comprising: a body having a handle and a drive portion; the drive portion being disposed at one end of the handle and having a drive groove; the bottom of the drive groove having a first abutment surface and a second abutment surface connected to each other; wherein the first abutment surface and the second abutment surface are sandwiched at a predetermined angle; and a movable member pivotally disposed within the drive groove and rotatable between a first angle and a second angle; when the movable member rotates to the first angle, the movable member abuts against the first abutment surface; when the movable member rotates to the second angle, the movable member abuts against the second abutment surface.

[0008] In one embodiment, the driving part further has a third abutment surface connected to the second abutment surface and opposite to the first abutment surface, such that the first abutment surface, the second abutment surface and the third abutment surface together enclose the driving groove; when the movable member rotates to the first angle, the movable member is generally parallel to the third abutment surface; when the movable member rotates to the second angle, the movable member is generally perpendicular to the third abutment surface.

[0009] In one embodiment, the driving part further has a third abutment surface connected to the second abutment surface and opposite to the first abutment surface, such that the first abutment surface, the second abutment surface and the third abutment surface together enclose the driving groove; when the movable member rotates to the first angle, the movable member is generally parallel to the first abutment surface and the third abutment surface and perpendicular to the second abutment surface; when the movable member rotates to the second angle, the movable member is generally perpendicular to the first abutment surface and the third abutment surface and parallel to the second abutment surface.

[0010] In one embodiment, the movable member has a movable claw with a fourth abutment surface and a fifth abutment surface on opposite sides; when the movable member rotates to the first angle, the fourth abutment surface abuts against the first abutment surface of the driving part, and the fifth abutment surface faces the third abutment surface; when the movable member rotates to the second angle, the fifth abutment surface abuts against the second abutment surface of the driving part, and the fourth abutment surface is connected to the first abutment surface and the third abutment surface.

[0011] In one embodiment, when the movable member rotates to the first angle, the distance between the fifth abutment surface and the third abutment surface is less than the distance between the first abutment surface and the third abutment surface when the movable member rotates to the second angle.

[0012] In one embodiment, the driving part has a sleeve portion disposed between the first abutment surface and the second abutment surface, with a first pivot hole penetrating through the center; one end of the movable claw is provided with two pivot arms disposed opposite to each other and a sleeve groove formed between the two pivot arms, each of the two pivot arms having a second pivot hole in the center; when the movable member is connected to the driving part, the sleeve portion passes through the sleeve groove and passes through the two second pivot holes of the two pivot arms and the first pivot hole of the sleeve portion through a pivot, so that the movable claw is pivotally mounted on the sleeve portion.

[0013] In one embodiment, the movable member further has two gaskets formed on opposite sides of the sleeve portion and between the two pivot arms, and each of the two gaskets has a third pivot hole in the center for the pivot to pass through.

[0014] In one embodiment, the body has a second driving part and a second driving groove disposed on the second driving part at one end of the handle away from the driving part, and the shape of the second driving groove is different from the shape of the driving groove.

[0015] In one embodiment, the drive groove is a U-shaped groove and the second drive groove is a hexagonal groove.

[0016] In one embodiment, the body further includes a third driving part and a fourth driving part, disposed on the body and respectively adjacent to the driving part and the second driving part; the third driving part has a first quincunx hole penetrating the body along the thickness direction; the fourth driving part has a second quincunx hole penetrating the body along the thickness direction, and the diameter of the first quincunx hole is different from the diameter of the second quincunx hole.

[0017] In one embodiment, the body further includes a fifth driving part disposed on the body and adjacent to one of the driving part and the second driving part; the fifth driving part has a socket penetrating the body in the thickness direction, and a chamfered groove is formed around one side of the socket.

[0018] The following are preferred embodiments based on the purpose, effects and structural configuration disclosed in this invention, and are described in detail with reference to the drawings.

Implementation Method

[0019] The following description with reference to the drawings represents a preferred embodiment of the present invention. It should be understood that these drawings and descriptions are for illustrative purposes only and are not intended to limit the present invention. Furthermore, the terms "upper" and "lower," "left" and "right," "front" and "rear," "first" and "second," etc., used in the specification are used to clearly describe the relative positions between elements or mechanisms and are not intended to be limiting.

[0020] Please refer to Figures 1 and 2. A preferred embodiment of the open-end wrench structure 1 provided by the present invention mainly includes a body 10 and a movable member 20. Wherein:

[0021] The main body 10 includes a handle 11, a drive portion 12, a second drive portion 13, a third drive portion 14, a fourth drive portion 15, and a fifth drive portion 16. The handle 11 is for a user to grip and use. The drive portion 12 is located at one end of the handle 11 and has a first gripper 120 and a second gripper 121 disposed opposite to each other. A drive groove 122 is formed between the first gripper 120 and the second gripper 121.

[0022] The driving unit 12 includes a first abutment surface 123, a second abutment surface 124, and a third abutment surface 125. The first abutment surface 123 is formed on one side of the first gripper 120. The second abutment surface 124 is formed on the bottom side of the driving groove 122 along the depth direction, located between the first gripper 120 and the second gripper 121, and connected to the first abutment surface 123 and the third abutment surface 125. The third abutment surface 125 is formed on one side of the second gripper 121 and is opposite to the first abutment surface. The first abutment surface 123, the second abutment surface 124, and the third abutment surface 125 together enclose the U-shaped driving groove 122. The first abutment surface 123 and the second abutment surface 124 form a predetermined angle, and the second abutment surface 124 and the third abutment surface 125 also form a predetermined angle. In this embodiment, the first abutment surface 123 and the third abutment surface 125 are generally perpendicular to the second abutment surface 124, and the first abutment surface 123 and the third abutment surface 125 are spaced apart by a predetermined distance.

[0023] The drive unit 12 further includes a sleeve portion 126 disposed between the first abutment surface 123 and the second abutment surface 124. The sleeve portion 126 is generally cylindrical, and its thickness is less than the thickness of the first abutment surface 123 and the second abutment surface 124. The sleeve portion 126 has a first pivot hole 127 extending through the center in the thickness direction.

[0024] The second driving part 13 is disposed at one end of the handle 11 away from the driving part 12, and has a third gripper 130 and a fourth gripper 131 disposed opposite to each other. A second driving groove 132 is formed between the third gripper 130 and the fourth gripper 131. In this embodiment, the second driving groove 132 is a hexagonal groove.

[0025] The third driving part 14 is disposed on the body 10 and adjacent to the driving part 12. The third driving part 14 has a first pentagonal hole 140 that penetrates the thickness direction of the body 10 and is closed. The fourth driving part 15 is disposed on the body 10 and adjacent to the second driving part 13. The fourth driving part 15 has a second pentagonal hole 150 that penetrates the thickness direction of the body 10 and is closed. The diameters of the first pentagonal hole 140 and the second pentagonal hole 150 are different. In this embodiment, the diameter of the first pentagonal hole 140 is larger than the diameter of the second pentagonal hole 150. In another embodiment, the diameter of the first pentagonal hole may be smaller than the diameter of the second pentagonal hole, or the pentagonal holes of the third driving part and the fourth driving part may be changed to round holes, hexagonal holes, or dodecagonal holes, etc.

[0026] The fifth drive unit 16 is disposed on the body 10, and in this embodiment is adjacent to the second drive unit 13. The fifth drive unit 16 has an insertion hole 160 that penetrates the thickness direction of the body 10 and is closed, and each of the opposite sides of the insertion hole 160 is provided with a tapered chamfered groove 161. The diameter of the insertion hole 160 corresponds to the diameter of a hand tool (such as a Phillips head screwdriver, a flathead screwdriver, an Allen head screwdriver, etc.), so that the hand tool can be inserted into the insertion hole 160 of the fifth drive unit 16 and rotated to lock or unlock the corresponding screw.

[0027] The movable member 20 is pivotally mounted in the drive groove 122 of the drive part 12 in a movable manner, and can rotate between a first angle and a second angle to change the width and depth of the drive groove 122. Specifically, the movable member 20 includes a movable claw 21, two gaskets 22, and a pivot 23. One end of the movable claw 21 is provided with two pivot arms 210 spaced apart by a certain distance, and a fitting groove 211 is formed between the two pivot arms 210. Each pivot arm 210 is generally cylindrical, and a second pivot hole 212 is provided in the center, penetrating along the thickness direction. The fitting groove 211 is used to fit onto the fitting part 126 of the drive part 12, so that the two pivot arms 210 are clamped on opposite sides of the fitting part 126, and the first pivot hole 127 of the fitting part 126 corresponds to the two second pivot holes 212 of the two pivot arms 210. The other end of the movable claw 21 extends away from the two pivot arms 210. The movable claw 21 has a fourth abutment surface 213 and a fifth abutment surface 214 on opposite sides. When the movable member 20 moves to the first angle, the movable claw 21 is generally parallel to the first abutment surface 123 and the third abutment surface 125 and perpendicular to the second abutment surface 124, with the fourth abutment surface 213 abutting against the first abutment surface 123 and the fifth abutment surface 214 facing the third abutment surface 125. When the movable member 20 moves to the second angle, the movable claw 21 is generally perpendicular to the first abutment surface 123 and the third abutment surface 125 and parallel to the second abutment surface 124, with the fifth abutment surface 214 abutting against the second abutment surface 124 and the fourth abutment surface 213 connecting the first abutment surface 123 and the third abutment surface 125. The two gaskets 22 are respectively disposed between the sleeve portion 126 and the two pivot arms 210, and each of the two gaskets 22 has a third pivot hole 220 in the center corresponding to the first pivot hole 127 and the two second pivot holes 212. The two gaskets 22 are used to reduce the frictional resistance generated by the movable claw 21 when it rotates. The pivot 23 passes through the two second pivot holes 212 of the movable claw 21, the two third pivot holes 220 of the two gaskets 22, and the first pivot hole 127 of the sleeve portion 126 in a detachable manner, so that the movable claw 21 is pivotally mounted on the sleeve portion 126 and rotates relative to the drive groove 122.

[0028] According to the above structural configuration, the open-end wrench structure 1 of the present invention provides a structure for rotating six drive nuts or bolts, including the drive groove 122 formed by the movable member 20 at the first angle of the drive part 12, the drive groove 122 formed by the movable member 20 at the second angle of the drive part 12, the second drive groove 132 of the second drive part 13, the first star-shaped hole 140 of the third drive part 14, the second star-shaped hole 150 of the fourth drive part 15, and the insertion hole 160 of the fifth drive part 16. These can be used to engage nuts or bolts of different sizes.

[0029] It should be particularly noted that the drive unit 12, by switching between the first angle and the second angle via the movable member 20, can provide drive grooves 122 of different widths and depths to engage nuts or bolts of two different sizes. Specifically, since the movable claw 21 has a certain thickness, when the movable member 20 is located at the first angle, the distance between the fifth abutment surface 214 and the third abutment surface 125 is less than the distance between the first abutment surface 123 and the third abutment surface 125 when the movable member 20 is located at the second angle, and the distance between the second abutment surface 124 and the opening on the top side of the drive groove 122 when the movable member 20 is located at the first angle is less than the distance between the fourth abutment surface 213 and the opening on the top side of the drive groove 122 when the movable member 20 is located at the second angle. Therefore, when the movable part 20 moves to the first angle, the drive groove 122 is narrower and deeper, allowing it to engage a smaller threaded fastener 100, as shown in Figure 3. When the movable part 20 moves to the second angle, the drive groove 122 is wider and shallower, allowing it to engage a larger threaded fastener 200, as shown in Figure 4. This allows users to loosen and unlock nuts or bolts of various sizes without changing tools, effectively improving work efficiency and reducing the economic and space costs associated with carrying multiple tools.

[0030] In summary, the open-end wrench structure provided by the present invention, through the movable member provided in the drive section, allows for the manipulation of the size of the drive groove to handle nuts or bolts of different sizes. On the other hand, the second drive section provided on the other side of the main body, as well as the first star-shaped hole, the second star-shaped hole, and the round hole penetrating the main body, can also handle nuts or bolts of corresponding sizes, allowing the user to complete the locking and unlocking operations of nuts or bolts of various sizes using the same open-end wrench.

[0031] The above embodiments are merely illustrative of the technology and effects of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify and change the above embodiments without departing from the technical principles and spirit of the present invention. Therefore, the scope of protection of the present invention should be as described in the patent application scope below. [Simplified Explanation of the Diagram]

[0032] Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a schematic diagram of the operation of a preferred embodiment of the present invention, showing the movable member at a first angle. Figure 4 is a schematic diagram of the operation of a preferred embodiment of the present invention, showing the movable member at a second angle.

Claims

1. An open-end wrench structure comprising: a body having a handle and a drive portion; the drive portion being disposed at one end of the handle and having a drive groove; the bottom of the drive groove having a first abutment surface and a second abutment surface connected to each other; wherein the first abutment surface and the second abutment surface are at a predetermined angle; and a movable member pivotally disposed within the drive groove and rotatable between a first angle and a second angle; when the movable member rotates to the first angle, the movable member abuts against the first abutment surface; when the movable member rotates to the second angle, the movable member abuts against the second abutment surface; The driving part further includes a third abutment surface connected to the second abutment surface and opposite to the first abutment surface, such that the first abutment surface, the second abutment surface, and the third abutment surface together enclose the driving groove; when the movable member rotates to the first angle, the movable member is generally parallel to the first abutment surface and the third abutment surface and perpendicular to the second abutment surface; when the movable member rotates to the second angle, the movable member is generally perpendicular to the first abutment surface and the third abutment surface and parallel to the second abutment surface.

2. The open-end wrench structure as described in claim 1, wherein the movable member has a movable claw with a fourth abutment and a fifth abutment on opposite sides; when the movable member rotates to the first angle, the fourth abutment abuts against the first abutment of the drive unit, and the fifth abutment faces the third abutment; when the movable member rotates to the second angle, the fifth abutment abuts against the second abutment of the drive unit, and the fourth abutment is connected to the first abutment and the third abutment.

3. The open-end wrench structure as described in claim 2, wherein when the movable member is rotated to the first angle, the distance between the fifth abutment and the third abutment is less than the distance between the first abutment and the third abutment when the movable member is rotated to the second angle.

4. The open-end wrench structure as described in claim 2, wherein the drive unit has a sleeve portion disposed between the first abutment surface and the second abutment surface, and is penetrated by a first pivot hole in the center; one end of the movable claw is provided with two opposing pivot arms and a sleeve groove formed between the two pivot arms, each of the two pivot arms having a second pivot hole in the center; when the movable member is connected to the drive unit, the sleeve portion passes through the sleeve groove and passes through the two second pivot holes of the two pivot arms and the first pivot hole of the sleeve portion through a pivot, so that the movable claw is pivotally mounted on the sleeve portion.

5. The open-end wrench structure as described in claim 4, wherein the movable member further comprises two washers formed on opposite sides of the sleeve portion and between the two pivot arms, each of the two washers having a third pivot hole in the center for the pivot to pass through.

6. The open-end wrench structure as described in claim 1, wherein the body has a second driving part and a second driving groove disposed in the second driving part at one end of the handle away from the driving part, and the shape of the second driving groove is different from the shape of the driving groove.

7. The open-end wrench structure as described in claim 6, wherein the drive groove is a U-shaped groove and the second drive groove is a hexagonal groove.

8. The open-end wrench structure as described in claim 6, wherein the body further includes a third drive portion and a fourth drive portion disposed on the body and adjacent to the drive portion and the second drive portion respectively; the third drive portion has a first star-shaped hole penetrating the body along the thickness direction; the fourth drive portion has a second star-shaped hole penetrating the body along the thickness direction, and the diameter of the first star-shaped hole is different from the diameter of the second star-shaped hole.

9. The open-end wrench structure as described in claim 6, wherein the body further includes a fifth drive unit disposed on the body and adjacent to one of the drive unit and the second drive unit; the fifth drive unit has a socket penetrating the body in the thickness direction, and a chamfered groove is formed around one side of the socket.

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