Multifunctional wrench

Abstract

The utility model belongs to the field of wrench tools, and relates to a multifunctional wrench which comprises a straight handle and a wrench head, the bottom of the wrench head is fixedly connected with a fixed base, the fixed base is provided with a fixed protrusion, one end of the straight handle is provided with a first main crank arm and a first auxiliary crank arm, and the end of the first main crank arm and the end of the first auxiliary crank arm are provided with wrench head installation grooves. The wrench head installation groove is internally provided with an installation notch and a fixing groove, the installation notch and the fixing groove correspond to the fixing protrusion, and the first main crank arm and the first auxiliary crank arm are each provided with a fixing assembly. Through the same inserting structure at the bottom of the wrench head, one wrench can be suitable for replacement of various wrench heads with different specifications and different shapes, so that the application range of the handle is greatly widened, and the use efficiency of a single handle is improved.

Description

Technical Field

[0001] The utility model belongs to the field of wrench tools and relates to a multifunctional wrench. Background Art

[0002] In some workshop areas, the use of adjustable spanners is not allowed. The manual valves involved in the area are of different manufacturers and models, and the required valve switch handles are also different. In addition, there are slight size differences in the valve handles of each manufacturer, resulting in a large number of various handle spanners being required in the workshop, which ultimately makes them inconvenient to select and use and difficult to manage.

[0003] The Chinese invention patent with the existing publication number CN104476467A, a multifunctional wrench includes a main hand, a sub-wrench A, a sub-wrench B, a connecting block, a tension controller, a main wrench rod, a sub-wrench rod A, a sub-wrench rod B, a socket wrench head, a wrench mouth inner hole a, a plum wrench head, a wrench mouth inner hole b, a wrench mouth inner hole c, a wrench mouth inner hole d, a magnet bar, and a U-shaped rigid hand head. The characteristic is that: a U-shaped rigid hand head is provided at one end of the main hand, and a plum wrench head is provided at the other end. A magnet bar is installed on one side of the U-shaped rigid hand head close to the wrench mouth inner hole a. The sub-wrench A and the sub-wrench B are respectively located on both sides of the main hand rod, and the sub-wrench A and the sub-wrench B are respectively provided with a socket wrench head at one end and the other end is connected to both sides of the main hand rod through the connecting block on the main hand rod.

[0004] The prior art has the following technical defects:

[0005] Although the above technical solution integrates multiple specifications of wrenches into one, only a corresponding wrench head can be replaced on a certain wrench. However, the connectors configured for different devices are different, and there are accessories with different shapes from conventional ones, which makes the wrench unsuitable for the operation of a small number of special-shaped connectors, and additional wrenches are still needed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a multifunctional wrench.

[0007] The multifunctional wrench described in the utility model comprises a straight handle and a wrench head, the bottom of the wrench head is fixedly connected to a fixed base, a fixed protrusion is provided on the fixed base, a first main crank arm and a first auxiliary crank arm are provided at one end of the straight handle, the ends of the first main crank arm and the first auxiliary crank arm are provided with a wrench head mounting groove, a mounting notch and a fixing groove corresponding to the fixing protrusion are provided in the wrench head mounting groove, the first main crank arm and the first auxiliary crank arm are both provided with a fixing component, the fixing component comprises a fixing block slidably connected to the inside of the first main crank arm and the first auxiliary crank arm, a moving block is provided on the fixing block, the fixing block corresponds to the mounting notch and the fixing groove, and a spring adapted to the fixing block is provided inside the first main crank arm and the first auxiliary crank arm.

[0008] Working process or working principle:

[0009] First, fix wrench heads of different specifications and shapes to the fixed base. When in use, install different wrench heads in the wrench head mounting grooves on the first main crank arm and the first auxiliary crank arm according to different needs. First, pull the movable block to drive the fixed block to move backward, so that the fixed block is away from the mounting notch, and then align the fixing protrusion on the fixed base with the mounting notch and insert it. Rotate the fixing protrusion into the fixing groove, and then loosen the movable block to reset the fixing block to resist the fixed base. At the same time, limit the fixing notch to the fixing groove, thereby achieving fixation.

[0010] The other end of the straight handle is provided with a second main crank arm and a second auxiliary crank arm, so that one wrench can be used to perform operations of various specifications at one time according to usage requirements.

[0011] The connection angle between the first main crank arm and the first auxiliary crank arm and the straight handle is 145-155°, and the welding angle is 145-155°, which improves the strength of the connection and is not easy to bend and deform.

[0012] The backs of the wrench head mounting grooves on the first main crank arm and the first auxiliary crank arm are arranged in parallel, and the length of the first main crank arm is 1.5 times the length of the first auxiliary crank arm.

[0013] The first auxiliary crank arm is slidably connected to the straight handle.

[0014] A sliding block is fixedly connected to the first secondary curved arm, and a sliding groove and an elastic locking block adapted to the sliding block are provided on the straight handle. The side of the elastic locking block facing away from the first secondary curved arm is a sloped surface. When it is necessary to extend into a narrower position, the elastic locking block can be pressed downward, and the first secondary curved arm can be driven to move on the straight arm by the sliding block. When resetting, it only needs to be pushed forward, and the elastic locking block can be pressed down by the inclined surface of the first secondary curved arm to achieve resetting.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model uniformly sets a plurality of wrench heads as circular plug-in parts, and enables one wrench to be suitable for replacing a plurality of wrench heads of different specifications and shapes through the same plug-in structure at the bottom of the wrench head, thereby greatly improving the application range of the handle and the use efficiency of a single handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural schematic diagrams of an embodiment of the utility model.

[0018] Figure 2 This is a front view of an embodiment of the utility model.

[0019] Figure 3 This utility model Figure 2 A in the enlarged view,

[0020] Figure 4 This is the second structural diagram of an embodiment of the utility model.

[0021] Figure 5 This utility model Figure 4 The enlarged view of point B in the figure,

[0022] Figure 6 It is a structural schematic diagram of a wrench head base in one embodiment of the utility model.

[0023] In the figure: 1, wrench head mounting groove; 2, first secondary crank arm; 3, sliding block; 4, sliding groove; 5, second secondary crank arm; 6, second main crank arm; 7, straight handle; 8, first main crank arm; 9, elastic locking block; 10, spring; 11, moving block; 12, mounting notch; 13, fixing block; 14, fixing groove; 15, wrench head; 16, fixing base; 17, fixing protrusion. DETAILED DESCRIPTION

[0024] Example 1

[0025] like Figure 1 to Figure 6As shown, the multifunctional wrench described in the utility model comprises a straight handle 7 and a wrench head 15, the bottom of the wrench head 15 is fixedly connected to a fixed base 16, and a fixed protrusion 17 is provided on the fixed base 16, and a first main crank arm 8 and a first secondary crank arm 2 are provided at one end of the straight handle 7, and a wrench head mounting groove 1 is provided at the ends of the first main crank arm 8 and the first secondary crank arm 2, and a mounting notch 12 and a fixing groove 14 corresponding to the fixing protrusion 17 are provided in the wrench head mounting groove 1, and a fixing component is provided on the first main crank arm 8 and the first secondary crank arm 2, and the fixing component comprises a fixing block 13 slidably connected to the inside of the first main crank arm 8 and the first secondary crank arm 2, and a moving block 11 is provided on the fixing block 13, and the fixing block 13 corresponds to the mounting notch 12 and the fixing groove 14, and a spring 10 adapted to the fixing block 13 is provided inside the first main crank arm 8 and the first secondary crank arm 2; the other end of the straight handle 7 is provided with a second main crank arm 6 and a second secondary crank arm 5, and one wrench can be used once according to usage requirements. The invention realizes operations of various specifications; the connection angles of the first main crank arm 8 and the first auxiliary crank arm 2 with the straight handle 7 are 145-155°, and the welding angle is 145-155°, which improves the strength of the connection and is not easy to bend and deform; the backs of the wrench head mounting grooves 1 on the first main crank arm 8 and the first auxiliary crank arm 2 are arranged in parallel, and the length of the first main crank arm 8 is 1.5 times the length of the first auxiliary crank arm 2; the first auxiliary crank arm 2 is slidably connected to the straight handle 7; the first auxiliary crank arm 2 is fixedly connected with a sliding block 3, and the straight handle 7 is provided with a sliding groove 4 and an elastic locking block 9 adapted to the sliding block 3, and the side of the elastic locking block 9 facing away from the first auxiliary crank arm 2 is a sloped surface. When it is necessary to extend into a narrower position, the elastic locking block 9 can be pressed downward, and the first auxiliary crank arm 2 can be driven to move on the straight arm by the sliding block 3. When resetting, it only needs to be pushed forward, and the elastic locking block 9 is pressed down by the inclined surface of the first auxiliary crank arm 2 to achieve resetting.

[0026] Working process or working principle:

[0027] First, fix the wrench heads 15 of different specifications and shapes to the fixed base 16. When in use, different wrench heads 15 are installed in the wrench head mounting grooves 1 on the first main crank arm 8 and the first secondary crank arm 2 according to different needs. First, pull the movable block 11 to drive the fixing block 13 to move backward, so that the fixing block 13 is away from the mounting notch 12, and then align the fixing protrusion 17 on the fixing base 16 with the mounting notch 12 and put it in, and screw the fixing protrusion 17 into the fixing groove 14 by rotation, and then release the movable block 11 to reset the fixing block 13 to resist the fixed base 16, and at the same time limit the fixing notch to the fixing groove 14, so as to achieve fixation. When it is necessary to extend into a narrower position, the elastic locking block 9 can be pressed downward, and the first secondary crank arm 2 can be driven to move on the straight arm by the sliding block 3. When resetting, it only needs to be pushed forward, and the elastic locking block 9 can be pressed down by the inclined surface of the first secondary crank arm 2 to achieve resetting.

[0028] The utility model uniformly sets a plurality of wrench heads as circular plug-in parts, and enables one wrench to be suitable for replacing a plurality of wrench heads of different specifications and shapes through the same plug-in structure at the bottom of the wrench head, thereby greatly improving the application range of the handle and the use efficiency of a single handle.

[0029] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A multifunctional wrench, characterized in that: The invention comprises a straight handle (7) and a wrench head (15), wherein the bottom of the wrench head (15) is fixedly connected to a fixed base (16), and the fixed base (16) is provided with a fixing protrusion (17); one end of the straight handle (7) is provided with a first main crank arm (8) and a first auxiliary crank arm (2); the ends of the first main crank arm (8) and the first auxiliary crank arm (2) are provided with a wrench head mounting groove (1); a mounting notch (12) and a fixing groove (14) corresponding to the fixing protrusion (17) are provided in the wrench head mounting groove (1); and the first main crank arm (8) and the first auxiliary crank arm (2) are both provided with fixing components; The fixing assembly comprises a fixing block (13) slidably connected inside the first main crank arm (8) and the first auxiliary crank arm (2), a moving block (11) is provided on the fixing block (13), the fixing block (13) corresponds to the installation notch (12) and the fixing groove (14), and a spring (10) adapted to the fixing block (13) is provided inside the first main crank arm (8) and the first auxiliary crank arm (2).

2. The multifunctional wrench according to claim 1, characterized in that: The other end of the straight handle (7) is provided with a second main curved arm (6) and a second auxiliary curved arm (5).

3. The multifunctional wrench according to claim 2, characterized in that: The connection angle between the first main crank arm (8) and the first auxiliary crank arm (2) and the straight handle (7) is 145-155°.

4. The multifunctional wrench according to claim 3, characterized in that: The backs of the wrench head mounting grooves (1) on the first main crank arm (8) and the first auxiliary crank arm (2) are arranged in parallel, and the length of the first main crank arm (8) is 1.5 times the length of the first auxiliary crank arm (2).

5. The multifunctional wrench according to any one of claims 1 to 4, characterized in that: The first auxiliary curved arm (2) is slidably connected to the straight handle (7).

6. The multifunctional wrench according to claim 5, characterized in that: The first auxiliary crank arm (2) is fixedly connected to a sliding block (3), the straight handle (7) is provided with a sliding groove (4) and an elastic locking block (9) adapted to the sliding block (3), and the side of the elastic locking block (9) facing away from the first auxiliary crank arm (2) is a sloped surface.

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