High-precision torque wrench

Abstract

The high-precision torque wrench comprises a wrench body, a sleeve, a stepping motor and an embedded module, the head of the wrench body is provided with a sleeve connecting piece connected with the sleeve, the stepping motor is arranged to drive the sleeve to rotate, the wrench body is further provided with a torque inductive sensor used for detecting torque, and the embedded module is connected with the torque inductive sensor. The multifunctional wrench is characterized in that an embedded module is arranged in the wrench body, the defect that a common wrench can only extend into a narrow space and cannot rotate in the narrow space is overcome in the mode that the sleeve is driven by the stepping motor to rotate, and remote interaction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a high-precision torque wrench. Background Art

[0002] With the advancement of science and technology and the development of the times, wireless communication technology and automatic control methods have gradually become inseparable from the daily production and maintenance industry. In daily maintenance work in narrow spaces, especially when some parts are densely packed, the construction space is extremely narrow, and the visibility is poor, a large number of peripheral parts need to be removed before they can be accessed. At the same time, according to the current traditional instrument torque wrench, it is also difficult to access this area, making the installation torque requirements difficult to access due to the narrow space.

[0003] Based on the above background, it is necessary to develop a torque wrench that can be remotely controlled and has remote torque display to cope with maintenance work in some narrow spaces. Utility Model Content

[0004] The utility model aims to provide a torque wrench which is suitable for narrow space and has torque remote display.

[0005] A high-precision torque wrench comprises a wrench body, a sleeve, a stepper motor and an embedded module. The head of the wrench body is provided with a sleeve connector to connect the sleeve, and a stepper motor is provided to drive the sleeve to rotate. The wrench body is also provided with a torque sensing sensor for detecting torque. The wrench body is provided with an embedded module; the embedded module comprises a display module, a central processing unit, a Bluetooth communication module, an analog quantity to digital quantity conversion module and a drive module.

[0006] The central processing unit is controlled and connected with the display module and the Bluetooth communication module;

[0007] The central processing unit is connected to the stepper motor control via a drive module;

[0008] The torque sensing sensor is connected to the central processing unit via an analog quantity to digital quantity module.

[0009] Preferably, the central processing unit is an embedded processor.

[0010] Preferably, the display module is an OLED display screen.

[0011] Preferably, the driving module includes a power amplifier circuit and a position feedback module.

[0012] Preferably, the sleeve connector includes a fixed cylindrical member and a sleeve member;

[0013] The fixed cylindrical member has a stepping motor disposed inside and an internal thread disposed on its inner surface;

[0014] The outer surface of the sleeve member is an external thread that cooperates with the internal thread of the fixed cylindrical member. The sleeve member is also rotatably connected to a sleeve setting member through a bearing, and the sleeve setting member is connected to the output shaft of the stepping motor;

[0015] One end of the sleeve setting member is provided with a straight-line connection groove, and the output shaft end of the stepping motor is in a straight-line shape that cooperates with the straight-line connection groove;

[0016] The sleeve setting piece and the sleeve setting piece are also provided with a sleeve.

[0017] The fixed cylindrical part and the sleeve part are detachably connected. When facing objects of different sizes, the sleeve part can be removed from the fixed cylindrical part by selecting it. The straight connecting groove and the straight shape design ensure that after the connection, the sleeve setting part will not affect the rotation of the sleeve, which has the advantage of wide applicability.

[0018] The wrench body is provided with a battery module for supplying power to the embedded module, and is provided with a charging port.

[0019] The utility model solves the disadvantage that ordinary wrenches can only be inserted into a narrow space but cannot be rotated by driving the sleeve to rotate through a stepping motor.

[0020] The utility model can display the installation torque value currently applied by the wrench through the display module on the main body and the remote end connected through the Bluetooth communication module, thereby realizing information interaction.

[0021] The utility model uses a bridge-type deformation sensing circuit design to sense the magnitude of the force applied to the metal parts, and uses a high-precision analog-to-digital conversion module to proportionally calculate the corresponding torque value inside the embedded processor. Combined with the use of a low-power OLED display, the torque value currently applied by the torque wrench can be displayed in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0023] Figure 2 2 is a cross-sectional view of the torque wrench of this embodiment.

[0024] Figure 3 It is a schematic diagram of the slot end of the sleeve setting member of this embodiment.

[0025] Figure 4 Schematic diagram of the connection of the central processing unit of this embodiment. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings. Example 1

[0027] like Figure 1-4 As shown, a high-precision torque wrench includes a wrench body 1, a sleeve 2, a stepper motor 3 and an embedded module. The head of the wrench body 1 is provided with a sleeve connector 4 connected to the sleeve 2, and a stepper motor 3 is provided to drive the sleeve 2 to rotate. The wrench body 1 is also provided with a torque sensing sensor for detecting torque, and the wrench body 1 is provided with an embedded module; the embedded module includes a display module 8, a central processing unit, a Bluetooth communication module, an analog quantity to digital quantity conversion module and a drive module;

[0028] The central processing unit is controlled and connected with the display module 8 and the Bluetooth communication module;

[0029] The central processing unit is connected to the stepper motor 3 through the driving module;

[0030] The torque sensing sensor is connected to the central processing unit via an analog quantity to digital quantity module.

[0031] Preferably, the central processing unit is an embedded processor.

[0032] Preferably, the display module 8 is an OLED display screen.

[0033] Preferably, the driving module includes a power amplifier circuit and a position feedback module.

[0034] Preferably, the sleeve connector 4 includes a fixed cylindrical member 5 and a sleeve member 6;

[0035] The fixed cylindrical member 5 is provided with a stepping motor 3 inside, and its inner surface is provided with an internal thread;

[0036] The outer surface of the sleeve member 6 is an external thread that cooperates with the internal thread of the fixed cylindrical member 5. The sleeve member 6 is also rotatably connected to a sleeve setting member 7 through a bearing. The sleeve setting member 7 is connected to the output shaft of the stepping motor 3.

[0037] One end of the sleeve setting member 7 is provided with a straight connection groove, and the output shaft end of the stepping motor 3 is in a straight shape that cooperates with the straight connection groove;

[0038] The sleeve setting member 7 is also provided with a sleeve 2.

[0039] In this embodiment, the central processing unit adopts the currently more mature embedded processor, STM32 series processor, and the Bluetooth communication module adopts the JDY-23 communication module with lower transmission power, which can meet the short-range wireless communication of wireless control terminals such as mobile phones or tablet computers. The display module adopts an OLED display module with a resolution of 128*64. OLED has excellent characteristics such as self-luminescence, no need for backlight, high contrast, thin thickness, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, simple structure and process. The analog quantity to digital quantity module adopts the HX711 high-precision 24-bit A / D converter chip, which integrates peripheral circuits required by other chips of the same type, including a voltage-stabilized power supply, an on-chip clock oscillator, etc. The torque sensor is made of aluminum alloy, which has the characteristics of light weight and high hardness.

[0040] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and having the same performance or use, should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A high-precision torque wrench, comprising a wrench body, a sleeve, a stepper motor and an embedded module, wherein the head of the wrench body is provided with a sleeve connector to connect the sleeve, and a stepper motor is provided to drive the sleeve to rotate, and the wrench body is also provided with a torque sensing sensor for detecting torque, characterized in that: An embedded module is provided in the wrench body; The embedded module includes a display module, a central processing unit, a Bluetooth communication module, an analog quantity to digital quantity module and a drive module; The central processing unit is controlled and connected with the display module and the Bluetooth communication module; The central processing unit is connected to the stepper motor control via a drive module; The torque sensing sensor is connected to the central processing unit via an analog quantity to digital quantity module.

2. A high-precision torque wrench according to claim 1, characterized in that: The central processing unit is an embedded processor.

3. A high-precision torque wrench according to claim 1, characterized in that: The display module is an OLED display screen.

4. A high-precision torque wrench according to claim 1, characterized in that: The driving module includes a power amplifier circuit and a position feedback module.

5. A high-precision torque wrench according to claim 1, characterized in that: The sleeve connecting piece includes a fixed cylindrical piece and a sleeve piece; The fixed cylindrical member has a stepping motor disposed inside and an internal thread disposed on its inner surface; The outer surface of the sleeve member is an external thread that cooperates with the internal thread of the fixed cylindrical member; The sleeve member is also rotatably connected to a sleeve setting member via a bearing, and the sleeve setting member is connected to the output shaft of the stepping motor; One end of the sleeve setting member is provided with a straight-line connection groove, and the output shaft end of the stepping motor is in a straight-line shape that cooperates with the straight-line connection groove; The sleeve setting piece is also provided with a sleeve.

6. A high-precision torque wrench according to claim 1, characterized in that: The wrench body is provided with a battery module for supplying power to the embedded module, and is provided with a charging port.

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