CN206123511U - Be adapted to spanner of different nut diameters - Google Patents

Abstract

The utility model discloses a wrench suitable for different nut diameters, which comprises a wrench body and a first clamping mechanism installed at one end of the wrench body. The external power cylinder has a rotation space between the inner diameter of the power cylinder and the outer diameter of the telescopic disk, and a plurality of transmission rods are arranged at intervals in the rotation space. One end of the transmission rod is hinged on the telescopic disk, and the other end is connected to the telescopic disk. The power cylinder is hinged; one end of the power cylinder is provided with a tooth profile that meshes with the transmission gear, and the rotating shaft on the transmission gear is connected to a driving device; there are multiple movable blades installed in the inner circumference of the telescopic disk, and one end of the movable blade It is fixed on the inner diameter of the telescopic disk, and the other end is used as the clamping end. The wrench with this structure can quickly adjust the opening and closing degree of the movable wrench according to different nuts, so as to be suitable for clamping nuts with different diameters, without manual operation, which is labor-saving and fast, and has a simple structure and strong practicability.

Description

A wrench adapted to different nut diameters

technical field

The utility model relates to a mechanical repair and installation tool, in particular to a wrench suitable for different nut diameters.

Background technique

A wrench is a commonly used installation and removal tool. The wrench of the traditional structure is usually made of carbon structural steel or alloy structural steel, which uses the principle of leverage to turn bolts, screws, nuts and other hand tools that are threaded to hold the opening or casing of the bolt or nut. When the wrench is in use, an external force is applied to the handle along the direction of thread rotation, and one end of the clamped nut or bolt can twist the bolt or nut. Wrenches are divided into live wrench and dead wrench. The adjustable wrench is adapted to nuts of different diameters by manually adjusting the opening and closing of the adjustable wrench. It has a wide range of applications and is more popular.

However, the adjustment of the opening and closing degree of the movable wrench in the existing movable wrench is generally through manual operation. For example, the Chinese utility model patent with the authorized announcement number CN 205415441U discloses a movable wrench with adjustable inclination angle, including a handle and a wrench head. , the head of the wrench includes a fixed wrench, a movable wrench, an accommodating groove and a rotating screw. The fixed wrench is arranged at one end of the head. The screw rod meshes with the tooth row, which can make the movable wrench slide. The upper part of the handle is provided with a fitted groove line that can rotate the head of the wrench, and has a butterfly lock nut. The lower part of the handle is also provided with a rotatable fitted groove line. , there is a hollow slot hole in the middle of the rear end of the handle; anti-slip teeth are set on the occlusal surface of the fixed wrench and the movable wrench, and the occlusal surfaces of the fixed wrench and the movable wrench are not parallel, there is a small inclination, and the opening Finally, a trapezoidal surface with a large outer mouth and a smaller inner mouth is formed. The movable wrench of this structure realizes the adjustment of the opening and closing degree of the movable wrench through the mechanical structures such as the set rotating screw rod, the accommodation groove, the tooth row, and the tooth row groove. Although the structure is simple, it has the disadvantages of laborious adjustment operation and long time consumption during use, which is unfavorable for popularization.

Contents of the invention

In view of the above-mentioned shortcomings, the technical problem to be solved by the utility model is to provide a wrench with a simple structure suitable for different nut diameters, which can quickly adjust the opening and closing of the movable wrench for different nuts, and the operation is labor-saving.

In order to solve the above problems, the utility model is realized through the following technical solutions:

A wrench adapted to different nut diameters, comprising a wrench body used for gripping and a first clamping mechanism installed at one end of the wrench body, the first clamping mechanism includes a telescopic disc, which is coaxially installed outside the telescopic disc The power cylinder and the transmission gear used to drive the power cylinder to rotate, there is a rotation space between the inner diameter of the power cylinder and the outer diameter of the telescopic disk, and a plurality of transmission rods are arranged at intervals in the rotation space. One end of the transmission rod is hinged on the telescopic disc, and the other end is hinged on the power cylinder; one end of the power cylinder is provided with a tooth shape meshed with the transmission gear, and the rotating shaft on the transmission gear is connected with a driving device; A plurality of movable blades are installed in the inner circumference of the telescopic disk, one end of the movable blade is fixedly connected to the inner diameter of the telescopic disk, and the other end is used as a clamping end.

In the above solution, in order to make the wrench of this structure suitable for the disassembly and assembly of more types of nuts, a second clamping mechanism is installed on the other end of the wrench body opposite to the first clamping mechanism, and the second clamping mechanism The holding mechanism includes a fixed jaw, a movable jaw, a screw nut mechanism and a bevel gear mechanism. The fixed jaw is fixed on the end of the wrench body. The bevel gear mechanism is opposite to the fixed jaw and installed on the wrench body. The screw nut mechanism passes through The bearing is installed horizontally between the bevel gear mechanism and the fixed jaw, and the rotating end of the screw nut mechanism is connected with the bevel gear mechanism. The movable jaw is fixed on the displacement nut on the screw nut mechanism; the bevel gear mechanism is connected There is a drive motor.

In the above solution, in order to make the wrench have a simple measurement function at the same time, a scale mark is marked on the surface of the wrench body.

In the above solution, in order to make the transmission efficiency of the screw rod higher and faster, the screw thread provided on the screw screw is a trapezoidal screw thread.

In the above solution, the driving device may be a micro motor, and a circuit board for controlling the micro motor is provided on the wrench body, and a start button, an adjustment knob and a close button are provided on the circuit board.

In the above solution, both the micro motor and the circuit board can be powered by the same battery, and the battery is embedded in the wrench body.

The beneficial effects of the utility model are:

1. The first clamping mechanism provided by the utility model is mainly composed of a telescopic disc, a transmission rod, a power cylinder and movable blades. When in use, the drive gear drives the transmission gear to work, and the transmission gear drives the rotation of the power cylinder. Through the synchronous rotation of each transmission rod, the opening and closing degree of the movable blades on the telescopic disc is adjusted, so as to adapt to the clamping of nuts with different diameters, without manual operation, which is labor-saving and fast;

2. The second clamping mechanism provided by the utility model is mainly composed of a fixed jaw, a movable jaw, a screw nut mechanism and a bevel gear mechanism for driving the screw nut mechanism to rotate. The second clamping mechanism with simple structure and small size can realize the positioning and clamping work of the nut, which is convenient and quick and has a wide range of applications.

Description of drawings

Fig. 1 is a schematic structural diagram of a wrench suitable for different nut diameters.

Fig. 2 is a schematic diagram of the internal structure of the first clamping mechanism.

The labels in the figure are: 1. Wrench main body, 2. Transmission gear, 3. First clamping mechanism; 3-1. Transmission rod, 3-2. Power cylinder, 3-3. Telescopic disc, 3-4. Movable Blade, 4, rotating space, 5, start button, 6, adjustment knob, 7, closing button, 8, battery, 9, screw nut mechanism, 10, bearing, 11, movable jaw, 12, bevel gear mechanism, 13, Fixed jaw.

detailed description

The utility model will be further explained below in conjunction with specific embodiments and accompanying drawings, but it is not intended to limit the utility model.

In this embodiment, the referred to "many" refers to the quantity greater than or equal to 3, which is called "many".

As shown in FIG. 1 and FIG. 2 , a wrench adapted to different nut diameters includes a wrench body 1 for gripping and a first clamping mechanism 3 installed at one end of the wrench body 1 . The first clamping mechanism 3 includes a telescopic disc 3-3 for clamping nuts to be disassembled, a power cylinder 3-2 coaxially installed outside the telescopic disc 3-3 and a power cylinder 3 for driving - 2 rotating drive gears 2 . in,

There is a rotation space 4 between the inner diameter of the power cylinder 3-2 and the outer diameter of the telescopic disk 3-3, and a plurality of transmission rods 3-1 are arranged at intervals in the rotation space 4, and the transmission rods 3-1 One end of it is hinged on the movable blade 3-4, and its other end is hinged with the power cylinder 3-2.

One end of the power cylinder 3-2 is provided with a tooth shape meshed with the transmission gear 2, and the rotating shaft on the transmission gear 2 is connected with a driving device. The driving device is specifically a micro-motor, and a circuit board for controlling the micro-motor is provided on the wrench body 1 , and a start button 5 , an adjustment knob 6 and a close button 7 are provided on the circuit board. In this embodiment, in order to reduce the number of batteries and the space occupied by the batteries, both the micro motor and the circuit board are powered by the same battery 8 , and the battery 8 is embedded in the wrench body 1 .

A plurality of movable blades 3-4 are installed in the inner circumference of the telescopic disk 3-3, one end of the movable blade 3-4 is hinged on the inner diameter of the telescopic disk 3-3, and the other end is used as a clamping end. In this embodiment, there are 6 movable blades 3-4 in a fan-shaped structure, and the clamping ends of the movable blades 3-4 are arranged around in turn to form a clamping space in a hexagonal structure. The clamping space of the shaped structure is used to clamp standard nuts or non-standard nuts, and the clamping space changes with the contraction of the movable blades 3-4 during use.

A second clamping mechanism is installed on the other end of the wrench body 1 opposite to the first clamping mechanism 3, and the second clamping mechanism includes a fixed jaw 13, a movable jaw 11, a screw nut mechanism 9 and a bevel gear Mechanism 12, the fixed jaw 13 is fixed on the end of the wrench main body 1, the bevel gear mechanism 12 is opposite to the fixed jaw 13 and installed on the wrench main body 1, the screw nut mechanism 9 is horizontally installed on the bevel gear mechanism 12 through the bearing 10 Between the fixed jaws 13 and the screw on the screw nut mechanism 9 is connected with the bevel gear mechanism 12 , and the movable jaw 11 is fixed on the displacement nut on the screw nut mechanism 9 . The bevel gear mechanism 12 is connected with a driving motor, and the driving motor is correspondingly connected with a power supply battery.

In this embodiment, the threads provided on the lead screw are specifically trapezoidal threads. And the surface position of the wrench main body 1 is marked with a scale mark.

The utility model when in use:

1. When using the first clamping mechanism 3 to disassemble the nut, first press the start button 5, the driving device works, the transmission gear 2 rotates, and then operate the adjustment knob 6 as required to control the output torque of the driving device. Driven by the transmission gear 2, the power cylinder 3-2 rotates, so that each transmission rod 3-1 rotates synchronously, drives the movable blade 3-4 to rotate, and then adjusts the clamping of the hexagonal structure formed by the movable blade 3-4. The size of the space, when the clamping space just clamps the nut to be disassembled, press the closing button 7, and finally the nut is removed or screwed on by manually operating the wrench main body.

2. When using the second clamping mechanism to disassemble the nut, first, start the drive motor, the bevel gear mechanism 12 works, and outputs power to the lead screw nut mechanism 9. At this time, the lead screw rotates, and the displacement nut on the lead screw follows When the lead screw rotates to move linearly, the movable jaw 11 installed on the displacement nut moves horizontally accordingly. When the space between the movable jaw 11 and the fixed jaw 13 can just clamp the nut to be disassembled, the drive motor is turned off. The movable jaw 11 is positioned, and finally the nut is removed or screwed on by manually operating the wrench main body.

Claims (6)

1. A wrench adapted to different nut diameters, comprising a wrench body (1) for gripping and a first clamping mechanism (3) mounted on one end of the wrench body (1), characterized in that: the first The clamping mechanism (3) includes a telescopic disk (3-3), a power cylinder (3-2) coaxially installed outside the telescopic disk (3-3), and a power cylinder (3-2) for driving the power cylinder (3-2) to rotate There is a rotating space (4) between the inner diameter of the power cylinder (3-2) and the outer diameter of the telescopic disk (3-3), and there is an interval in the rotating space (4). A plurality of transmission rods (3-1), one end of the transmission rod (3-1) is hinged on the movable blade (3-4), and the other end is hinged to the power cylinder (3-2); One end of (3-2) is provided with a tooth shape meshed with the transmission gear (2), and the rotating shaft on the transmission gear (2) is connected with a driving device; the inner circumference of the telescopic disc (3-3) A plurality of movable blades (3-4) are installed, one end of the movable blades (3-4) is hinged on the inner diameter of the telescopic disk (3-3), and the other end is used as a clamping end. 2. The wrench adapted to different nut diameters according to claim 1, characterized in that a second clamping mechanism is installed on the other end of the wrench body (1) opposite to the first clamping mechanism (3) , the second clamping mechanism includes a fixed jaw (13), a movable jaw (11), a screw nut mechanism (9) and a bevel gear mechanism (12), and the fixed jaw (13) is fixed on the wrench body (1) On the end, the bevel gear mechanism (12) is opposite to the fixed jaw (13) and installed on the wrench main body (1), and the lead screw nut mechanism (9) is horizontally installed on the bevel gear mechanism (12) and Between the fixed jaws (13) and the screw on the screw nut mechanism (9) is connected with the bevel gear mechanism (12), and the movable jaw (11) is fixed on the displacement nut on the screw nut mechanism (9). Above; the bevel gear mechanism (12) is connected with a driving motor. 3. The wrench adapted to different nut diameters according to claim 2, characterized in that: there are scale marks marked on the surface of the wrench body (1). 4. The wrench adaptable to different nut diameters according to claim 2, characterized in that: the threads provided on the lead screw are trapezoidal threads. 5. The wrench adapted to different nut diameters according to claim 1, characterized in that: the driving device is a micro motor, and a circuit board for controlling the micro motor is provided on the wrench body (1), and the circuit A start button (5), an adjustment knob (6) and an off button (7) are arranged on the board. 6. The wrench adapted to different nut diameters according to claim 5, characterized in that: the micro-motor and the circuit board are powered by the same battery (8), and the battery (8) is embedded in the wrench body ( 1) inside.