Internal hexagonal adjustable wrench

Abstract

The invention provides an inner hexagonal adjustable wrench. The inner hexagonal adjustable wrench comprises a movable wrench opening, a conical worm, a handle and a hexagonal nut. The conical worm is mounted on the handle through a hexagon nut; a rectangular hole is formed in the movable wrench opening, and the movable wrench opening is mounted on the rectangular rod of the handle and can slide along the rectangular rod; a spiral groove is formed in the conical face of the conical worm and can be matched with a groove in the movable wrench opening. The inner hexagon adjustable wrench can continuously adjust the size of the hexagon head, can adapt to inner hexagon bolt heads of different sizes, and reduces the requirement for inner hexagon size precision.

Description

Technical Field

[0001] The invention belongs to the field of mechanical tools, and in particular relates to a hexagon socket adjustable wrench. Background Art

[0002] Hexagon socket bolts have the advantages of being easy to install and able to withstand large tightening torques, and have been widely used in various fields. Traditional hexagon socket wrenches are of fixed sizes, and one wrench can only tighten bolts of one size, with poor versatility.

[0003] Chinese patent CN107671778B is a hexagon socket telescopic adjustable spanner. Hexagon socket spanners of sizes such as M6, M8, M10, etc. are integrated into one spanner, and the hexagon socket spanner of the required size is switched to through the telescopic design. Although it is easy to carry and has good versatility, the size of the hexagon head cannot be adjusted steplessly, and because this structure requires a hole to be dug in the hexagon head, the strength of the spanner is also reduced.

[0004] Chinese patent CN105150149A is an adjustable internal and external hexagon wrench. It consists of an internal fixed clamp and an internal movable clamp. The distance between the internal fixed clamp and the internal movable clamp can be adjusted by rotating the rotating wheel, and the size of the hexagonal head can be adjusted steplessly. This invention can only clamp the two opposite corners of the internal hexagonal head, and the force is poor, which is easy to slip. Summary of the invention

[0005] In view of the above problems, an object of the present invention is to provide a hexagon socket adjustable wrench, which can continuously adjust the size of the hexagon socket wrench, and the wrench does not have high requirements on the dimensional accuracy of the hexagon socket, and has better versatility.

[0006] The present invention provides a hexagon socket adjustable wrench, which comprises an adjustable spanner, a tapered worm, a handle, and a hexagonal nut. The tapered worm is mounted on the handle through the hexagonal nut, and can be rotated through a round shaft (knurling is convenient for adjustment) or a slot on the tapered worm, the adjustable spanner has a rectangular hole, is mounted on a rectangular rod of the handle, and can slide along the rectangular rod, the tapered worm has a spiral groove, which can be matched with the groove on the adjustable spanner, and as the tapered worm rotates, the adjustable spanner is driven to move up and down, thereby changing the size of the hexagonal head.

[0007] The conical worm has a spiral groove on the conical surface, and the round shaft is processed with a thread, which is installed on the handle through a nut. A relatively simple hexagonal wrench can also be formed by using three or two movable spanners.

[0008] The present invention utilizes a conical worm and a parallelogram-shaped movable spanner to decompose the movement of the movable spanner along the conical surface into horizontal and vertical movements, wherein the horizontal movement realizes the continuous adjustment of the size of the hexagonal head.

[0009] The turning part in the middle of the movable lever of the present invention converts the direction of the lever to a vertical direction, so as to facilitate the operation of the hexagonal head; and the lever is extended to a certain length, so that the hexagonal head can be operated even if the movable lever moves in a vertical direction.

[0010] The beneficial effects of the present invention are as follows:

[0011] 1. The size of the hexagonal head can be continuously adjusted to accommodate hexagon socket bolt heads of different sizes, which can reduce the requirements for the accuracy of the hexagonal size;

[0012] 2. One hexagon socket wrench can tighten various hexagon socket bolt heads, which is versatile and easy to use;

[0013] 3. For hexagon socket bolt heads with poor dimensional accuracy and low material hardness, the force is better and the risk of slipping can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention:

[0015] Figure 1 is a cross-sectional view of a hexagon socket adjustable wrench mechanism according to an embodiment of the present invention;

[0016] Figure 2 is an appearance diagram of a hexagon socket adjustable wrench mechanism according to an embodiment of the present invention;

[0017] Figure 3 is an outline diagram of a tapered worm according to an embodiment of the present invention;

[0018] Figure 4 is an appearance diagram of an adjustable wrench according to an embodiment of the present invention;

[0019] Figure 5 Schematic diagram of a hexagonal wrench according to an embodiment of the present invention.

[0020] Among them: 1- movable spanner 2- conical worm 3- handle 4- hexagonal nut DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] This embodiment provides a hexagon socket adjustable wrench, such as Figure 1-2 As shown, the hexagon socket adjustable wrench comprises: an adjustable spanner 1, a tapered worm 2, a handle 3, and a hexagonal nut 4. The tapered worm 2 is mounted on the handle 3 through the hexagonal nut 4, and can be rotated through the round shaft (knurling is convenient for adjustment) or the slot on the tapered worm 2. The adjustable spanner 1 has a rectangular hole, which is mounted on the rectangular rod of the handle 3 and can slide along the rectangular rod. The tapered worm 2 has a spiral groove, which can match the groove on the adjustable spanner 1. As the tapered worm 2 rotates, the adjustable spanner 1 is driven to move up and down, thereby changing the size of the hexagonal head.

[0023] The handle 3 is divided into two parts, an upper part and an lower part. After the movable spanner 1 is installed, the upper part and the lower part are connected by welding or threading.

[0024] The appearance of the conical worm is as follows Figure 3 As shown, there is a spiral groove on the conical surface, and a thread is processed on the circular shaft, which is installed on the handle 3 through a nut. Figure 4 This is the appearance drawing of the movable lever. Figure 5 The hexagon socket wrench is composed of six movable spanners 1, and a relatively simple hexagon socket wrench can also be composed of three or two movable spanners.

[0025] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hexagon socket adjustable wrench, characterized in that: The hexagon socket adjustable wrench comprises an adjustable spanner, a conical worm, a handle and a hexagonal nut. Wherein, the conical worm is mounted on the handle via a hexagonal nut; The movable wrench has a rectangular hole, is mounted on the rectangular rod of the handle, and can slide along the rectangular rod; The conical surface of the conical worm is provided with a spiral groove which can be matched with the groove on the movable wrench.

2. A hexagon socket adjustable wrench according to claim 1, characterized in that: The handle is divided into two parts, an upper part and an lower part. After the movable lever is installed, the upper part and the lower part are connected by welding or threading.

3. The hexagon socket adjustable wrench according to claim 1, characterized in that: As the conical worm rotates, the movable spanner is driven to move up and down, thereby changing the size of the hexagonal head.

4. A hexagon socket adjustable wrench according to claim 3, characterized in that: The movement of the movable spanner along the conical surface can be decomposed into horizontal and vertical movements, wherein the horizontal movement realizes the continuous adjustment of the size of the hexagonal head.

5. The hexagon socket adjustable wrench according to claim 1, characterized in that: The number of the movable levers is six or three.

6. A hexagon socket adjustable wrench according to any one of claims 1 to 5, characterized in that: The hexagonal head size can be continuously adjusted to accommodate different sizes of hexagon socket bolt heads.

7. The hexagon socket adjustable wrench according to claim 1, characterized in that: The circular shaft of the conical worm is knurled for easy adjustment.

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