Wrench capable of adjusting angle of handle

Abstract

The utility model discloses a wrench capable of adjusting the angle of a handle, which comprises a head part and the handle, the head part is detachably connected with the handle, the head part is provided with two bolt hole pairs, one end of the handle is provided with an extension part, the extension part is correspondingly provided with a bolt hole pair, and the bolt hole pair is provided with a bolt hole. The head part is provided with a cavity for accommodating the extension part of the handle, the cavity is provided with an opening, and when the extension part of the handle enters the cavity from the opening, a pin shaft penetrates through any one plug pin hole pair of the head part and the plug pin hole pair of the handle so as to connect the head part and the handle. According to the wrench, the problem that the rotatable angle of an existing wrench is small is solved, and the mounting or dismounting efficiency is effectively improved. In addition, when the wrench is used, the hand cannot make contact with the fixed face, and the risk of making contact with chemical media is reduced. Meanwhile, the angle of the handle can be adjusted according to actual conditions, and operation is more flexible.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and particularly relates to a wrench with an adjustable handle angle. Background Art

[0002] PFA (Polytetrafluoroethylene) material is widely used in various industrial fields due to its good stability and corrosion resistance. For example, it is often used in pipeline laying in the chemical industry. In order to install pipes and joints, a PFA bead nut wrench is required. Currently, the common wrenches on the market are integrally formed, with a fixed connection between the head and the handle. Figure 5 As shown in the schematic diagram of the existing wrench, where (a) shows the state before the wrench is twisted, and (b) shows the state after the wrench is twisted. As Figure 5 shown, due to position limitations, the nut can only be rotated by about 40° each time, resulting in low installation or disassembly efficiency. In addition, when the tail of the wrench turns close to the fixed surface, the operator's hand will touch the fixed surface, increasing the risk of contact with chemical media in the case of maintenance of used equipment. Summary of the Utility Model

[0003] In view of the above problems, the utility model proposes a wrench with an adjustable handle angle.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A wrench with an adjustable handle angle includes a head and a handle. The head and the handle are detachably connected. The head is provided with two pairs of pin holes. One end of the handle has an extension portion, and correspondingly, the extension portion is provided with a pair of pin holes. The head has a cavity for accommodating the extension portion of the handle. The cavity has an opening. When the extension portion of the handle enters the cavity from the opening, a pin passes through any pair of pin holes of the head and the pair of pin holes of the handle to connect the head and the handle.

[0006] Preferably, the extension portion of the handle has a shape matching the cavity.

[0007] Preferably, the width of the cavity is adapted to the width of the extension portion of the handle, and the length of the cavity is greater than the length of the extension portion of the handle.

[0008] Preferably, the two pairs of pin holes on the head are the first pair of pin holes and the second pair of pin holes. When the extension part of the handle is received in the cavity of the head and the pair of pin holes on the extension part of the handle corresponds to the first pair of pin holes on the head, the first handle angle is formed by connecting with pins; when the extension part of the handle is received in the cavity of the head and the pair of pin holes on the extension part of the handle corresponds to the second pair of pin holes on the head, the second handle angle is formed by connecting with pins.

[0009] Preferably, when the first handle angle is formed, one end of the handle is connected to a substantially middle position on the back surface of the head; when the second handle angle is formed, one end of the handle is connected to a position near the edge on the back surface of the head.

[0010] Preferably, one of the pin holes in the first pair of pin holes is located between the two pin holes in the second pair of pin holes.

[0011] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0012] The wrench with an adjustable handle angle of the present utility model solves the problem of the relatively small rotatable angle of the existing wrench by changing the relative position between the handle and the head, increases the angle of turning the nut, and effectively improves the installation or disassembly efficiency. In addition, when using the wrench, the hand will not contact the fixed surface, reducing the risk of contacting chemical media and improving the operation safety. At the same time, the handle with an adjustable angle can adjust the handle angle according to the actual situation when dealing with different installation environments, making the operation more flexible. Description of the Drawings

[0013] The present utility model will be further described below with reference to the drawings.

[0014] Figure 1 It is an assembled molding diagram of the wrench with an adjustable handle angle according to the preferred embodiment of the present utility model, where (a) is the first handle angle, (b) is the second handle angle, and (c) is the third handle angle.

[0015] Figure 2 It is an exploded view of the wrench with an adjustable handle angle according to the preferred embodiment of the present utility model.

[0016] Figure 3 It is a three-dimensional view of the wrench with an adjustable handle angle according to the preferred embodiment of the present utility model.

[0017] Figure 4 It is a schematic diagram of the states before and after torsion of the wrench with an adjustable handle angle according to the preferred embodiment of the present utility model.

[0018] Figure 5Schematic diagram of an existing PFA ball-insert nut wrench, where (a) shows the state before the PFA ball-insert nut wrench is twisted, and (b) shows the state after the PFA ball-insert nut wrench is twisted. Detailed implementation mode

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0021] The following will describe the implementation mode of the present invention with reference to the drawings in the specification. It should be noted that the implementation modes involved in this specification are not exhaustive and do not represent the only implementation mode of the present invention. The following corresponding embodiments are only for clearly explaining the inventive content of the present invention patent and do not limit its implementation mode. For those of ordinary skill in the art, different forms of changes and modifications can be made on the basis of the description of these embodiments. Any changes or modifications that belong to the technical concept and inventive content of the present invention and are obvious are also within the protection scope of the present invention.

[0022] Figure 1 Assembly and forming diagram of a wrench with adjustable handle angle according to a preferred embodiment of the present invention, where (a) shows the first handle angle, (b) shows the second handle angle, and (c) shows the third handle angle. Figure 2 Exploded view of a wrench with adjustable handle angle according to a preferred embodiment of the present invention. Figure 3A perspective view of a wrench with an adjustable handle angle according to a preferred embodiment of the present utility model. As Figures 1 to 3 shown, it includes a head 1 and a handle 2, and the head 1 is detachably connected to the handle 2. The head 1 is provided with a first pair of pin holes 5 and a second pair of pin holes 6. The first pair of pin holes 5 is composed of a pin hole 51 and a pin hole 52. The second pair of pin holes 6 is composed of a pin hole 61 and a pin hole 62. One end of the handle 2 has an extension 3, and a third pair of pin holes 4 is correspondingly provided on the extension 3. The third pair of pin holes 4 is composed of a pin hole 41 and a pin hole 42. The head 1 also has a cavity 7 for accommodating the extension 3 of the handle 2, and the two pairs of pin holes on the head 1 penetrate through the cavity 7. The cavity 7 has an opening 8. When the extension 3 of the handle 2 enters the interior of the cavity 7 from the opening 8, a pin shaft (not shown) passes through the first pair of pin holes 5 or the second pair of pin holes 6 of the head 1 and the third pair of pin holes 4 of the handle to connect the head 1 and the handle 2.

[0023] Preferably, the head 1 is arc-shaped, and the convex surface (back surface) of the arc is connected to the handle 2. The concave surface of the arc has gears that engage with the surface ribs of the nut, so that the nut can be screwed by fitting. The cavity 7 of the head 1 is preferably also in an approximately arc-shaped configuration. Preferably, the extension 3 of the handle 2 has a shape matching that of the cavity 7. Specifically, the extension 3 can be an arc-shaped rod extending from one end of the handle 2 along both sides of the handle (substantially perpendicular to the handle). The part of the arc-shaped rod on one side of the handle is longer than the part on the other side of the handle, that is, the two parts can be of an asymmetrical shape. More preferably, the width of the cavity 7 is adapted to the width of the extension 3, and the length of the cavity 7 is greater than the length of the extension 3. In this way, the extension 3 can move in the cavity 7 so as to move to a position where the pair of pin holes of the extension (arc-shaped rod) 3 corresponds to the first pair of pin holes of the head 1 or move to a position where the pair of pin holes of the extension (arc-shaped rod) 3 corresponds to the second pair of pin holes of the head 1.

[0024] Preferably, one pin hole 52 of the first pair of pin holes 5 of the head 1 is located between the two pin holes 61 and 62 of the second pair of pin holes 6. As Figures 1 - 3 shown, the two pairs of pin holes are arranged along the side surface of the arc-shaped head 1 as follows: pin hole 51, pin hole 61, pin hole 52, pin hole 62. It can be seen that there is a shared area between the first pair of pin holes 5 and the second pair of pin holes 6 (that is, the area between pin hole 61 and pin hole 52). This design can increase the contact surface between the extension 3 and the cavity 7 as much as possible without increasing the volume of the cavity, saving space and improving the connection stability between the handle and the head.

[0025] In a preferred embodiment, the material thickness of the handle 2 is 10 mm, and the overall thickness of the head 1 is 20 mm.

[0026] The assembly method of the present utility model will be described below. When assembling the adjustable handle angle wrench, insert the extension 3 of the handle into the cavity 7 from the opening 8, align the third pin hole pair 4 on the extension 3 with the first pin hole pair 5 on the head one by one, and fix them with pins to form the first handle angle as shown in Figure 1 (a). When forming the first handle angle, one end of the handle 2 is connected to a substantially middle position on the back surface of the head 1. When the handle angle needs to be adjusted, pull out the pin, align the third pin hole pair 4 on the extension of the handle with the second pin hole pair 6 on the head, reinsert the pin to fix it, and form the second handle angle as shown in Figure 1 (b), where one end of the handle 2 is connected to a position near the edge on the back surface of the head 1, achieving the effect of changing the handle angle. In addition, as shown in Figure 1 (c), at the position of the second handle angle, rotate the handle 180°, align the pin hole 41 with the pin hole 62, and the pin hole 42 with the pin hole 61, and insert the pin to fix it, and a third handle angle can also be formed.

[0027] Figure 4 FIG. is a schematic diagram of the state before and after torsion of the adjustable handle angle wrench according to the preferred embodiment of the present utility model, where the wrench is a wrench with the first handle angle. As shown in Figure 4 (a), before torsion, the wrench is in the starting position, the left side of the head is in contact with the fixed surface, and after torsion, it reaches the end position as shown in Figure 4 (b), the right side of the head is in contact with the fixed surface, and the overall torsion angle of the wrench is significantly larger than the torsion angle of the existing wrench shown in Figure 5 , and can reach up to about 80°. During the torsion process, the handle of the adjustable angle wrench of the present utility model is far from the fixed surface, thereby reducing the risk for the operator to contact chemicals.

[0028] A wrench with an adjustable handle angle according to the present utility model solves the problem of a relatively small rotatable angle of the existing wrench by changing the relative position between the handle and the head, increases the angle of rotating the nut, and effectively improves the installation or disassembly efficiency. In addition, when using the wrench, the hand will not touch the fixed surface, reducing the risk of contacting chemical media and improving the operation safety. At the same time, the handle angle can be adjusted according to the actual situation when dealing with different installation environments, making the operation more flexible. Moreover, both the head and the wrench size of the present utility model can be replaced. The replaceable heads can be selected from 1 / 4 inch, 3 / 8 inch, 1 / 2 inch, 3 / 4 inch, 1 inch, 1.1 / 4 inch, and 1.1 / 2 inch. The replaceable handle lengths can be selected from 50 mm, 100 mm, and 150 mm. Multiple combinations are suitable for various working conditions.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wrench with an adjustable handle angle, comprising a head and a handle, characterized in that: The head is detachably connected to the handle, the head is provided with two pairs of latch holes, one end of the handle has an extension portion, the extension portion is correspondingly provided with a pair of latch holes, the head has a cavity for accommodating the extension portion of the handle, the cavity has an opening, when the extension portion of the handle enters the cavity from the opening, a pin shaft passes through any one of the pairs of latch holes of the head and the pair of latch holes of the handle, thereby connecting the head and the handle.

2. A wrench with adjustable handle angle according to claim 1, characterized in that: The extension of the handle has a shape that matches the cavity.

3. The wrench with adjustable handle angle according to claim 2, characterized in that: The width of the cavity is adapted to the width of the extension portion of the handle, and the length of the cavity is greater than the length of the extension portion of the handle.

4. The wrench with adjustable handle angle according to claim 3, characterized in that: The two pairs of latch holes in the head are a first pair of latch holes and a second pair of latch holes. When the extension of the handle is accommodated in the cavity of the head and the pair of latch holes on the extension of the handle corresponds to the first pair of latch holes in the head, a first handle angle is formed by the latch connection; when the extension of the handle is accommodated in the cavity of the head and the pair of latch holes on the extension of the handle corresponds to the second pair of latch holes in the head, a second handle angle is formed by the latch connection.

5. The wrench with adjustable handle angle according to claim 4, characterized in that: When the first handle angle is formed, one end of the handle is connected to a substantially middle position of the back of the head; when the second handle angle is formed, one end of the handle is connected to a position close to the edge of the back of the head.

6. The wrench with adjustable handle angle according to claim 5, characterized in that: One of the first pair of latch holes is located between the two latch holes of the second pair of latch holes.

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