An electric power wrench

Abstract

The application discloses an electric wrench and relates to the technical field of electric tools, which comprises two installation housings, a power supply, a switch, a control system, a main shaft, a driving mechanism, an impact assembly and a heat dissipation assembly. The power supply is arranged between the bottoms of the two installation housings; the middle positions of one end of the two installation housings are provided with installation openings one, the switch is fixedly installed between the inner walls on the two sides of the two installation openings one; the control system is arranged at the bottom of the inner wall on one side of one of the installation housings; the main shaft is arranged at the outer wall of one end of one of the installation housings; and the driving mechanism is installed at the inner wall of one end of one of the installation housings and is used for driving the rotation of the main shaft. The electric wrench has the advantages that the impact is stable, the torque output is stable, the impact block abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and in particular to an electric wrench. Background Technology

[0002] As a core tool for efficiently tightening and loosening bolts, the output torque, impact stability, and service life of electric wrenches directly affect work efficiency and equipment safety. With increasing demands for tightening accuracy, ease of operation, and tool durability in industrial assembly, more stringent standards are being placed on the impact structure, transmission efficiency, and heat dissipation performance of electric wrenches.

[0003] Traditional electric wrenches typically employ a straight-edge engaging impact block with a simple spiral groove structure, achieving torque output through rigid impact. However, this type of structure is prone to problems such as uneven force distribution, engagement jamming, and poor impact smoothness during impact. Long-term use can lead to impact block wear, transmission failure, and excessive noise. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an electric wrench. Its advantages include: achieving smooth impact and stable torque output while reducing impact block wear and extending service life.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an electric wrench, comprising: a mounting housing, wherein there are two mounting housings symmetrically spliced ​​together; further comprising: a power supply, a switch, a control system, a spindle, a drive mechanism, an impact component, and a heat dissipation component; the power supply is disposed between the bottoms of the two mounting housings; each of the two mounting housings has a mounting opening at the middle position of one end; the switch is fixedly installed between the inner walls on both sides of the two mounting openings; the control system is disposed at the bottom of the inner wall on one side of one of the mounting housings; the spindle is disposed on the outer wall of one end of one of the mounting housings; the drive mechanism is installed on the inner wall of one end of one of the mounting housings to drive the spindle to rotate; the impact component is installed at the other end of the inner wall on one side of one of the mounting housings to impact the spindle; and the heat dissipation component is disposed at one end of one of the mounting housings to dissipate heat from the drive mechanism.

[0006] Preferably, the impact assembly includes: a mounting plate, a mounting shaft, an active impact block, a driven impact block, two ball bearings, a buffer spring, and a mounting base. The mounting plate is vertically disposed on the inner wall of one of the mounting housings. One end of the mounting shaft is fixedly mounted to the center of one end of the mounting plate. Both sides of the mounting shaft have spiral grooves arranged in an inverted human shape. The active impact block is fitted onto the mounting shaft. A limiting groove is formed on the inner circumference of the active impact block. The limiting groove is annular. The two ball bearings are respectively disposed in the limiting groove and the two driven impact blocks. Between the spiral grooves, the buffer spring is fixedly installed between one end of the active impact block and one end of the mounting plate. Both sides of the other end of the active impact block are provided with drive grooves. The mounting base is vertically fixedly installed between the other ends of the inner walls of the two mounting shells that are close to each other. One end of the main shaft passes through the center of one end of the mounting base. The driven impact block is vertically arranged at the other end of the mounting base. The center of one end of the driven impact block is fixedly connected to one end of the main shaft. Both sides of the driven impact block are located in the two drive grooves.

[0007] Preferably, the driving mechanism includes: a rotary motor, a first gear, two second gears, a first mounting slot plate, and a third gear. The rotary motor is fixedly installed on the inner wall of one end of one of the mounting housings. The first gear is fitted onto the output shaft of the rotary motor. A second driving slot is formed at the center of the other end of the first mounting plate. The first gear is located in the second driving slot. Second driving slots are formed on both sides of the first mounting plate. The two second gears are vertically rotatably installed between the inner walls of the two second driving slots. The two second gears are meshed with the first gear. The first mounting slot plate is vertically fixedly installed between the inner walls of the two inner walls on both sides of the two mounting housings. The output shaft of the rotary motor passes through the center of the inner wall of one end of the first mounting slot plate. The other end of the first mounting plate is rotatably installed on the inner wall of one end of the first mounting slot plate. The third gear is fixedly installed on the inner circumference of the first mounting slot plate. The third gear is arranged in a ring and meshes with the two second gears.

[0008] Preferably, the driven impact block is arranged in the shape of a dart, with symmetrical tips on both sides, and the inner walls of the drive groove are arranged to fit the edges of the driven impact block.

[0009] Preferably, the outer circumferential wall of the mounting plate is provided with a mounting groove, and a buffer ring is fixedly installed on the inner circumferential wall of the mounting groove.

[0010] Preferably, the heat dissipation assembly includes: two mounting plates II, a plurality of guide plates, and a mounting plate III. The two mounting plates II are respectively arranged vertically and fixedly installed between one end of the inner wall of the two mounting housings that are close to each other. The two mounting plates II are respectively fitted onto both ends of the rotating motor. The two mounting plates II are equidistantly arranged with mounting openings II. The guide plates are hollow and fan-shaped. The plurality of guide plates are respectively fixedly installed between the inner walls on both sides of the plurality of mounting openings II. The plurality of guide plates on the two mounting plates II are respectively arranged in a corresponding and connected manner. The bottom of the guide plate is provided with a heat dissipation opening I. The mounting plate III is fixedly installed between the two mounting plates II.

[0011] Preferably, the mounting plate three is arranged in a ring shape, and a number of protrusions are fixedly installed at equal intervals on the inner circumference of the mounting plate three. The number of protrusions are respectively embedded in the circumferential gap between a number of adjacent guide plates. The two sides of the protrusions are respectively attached to the outer wall of the two adjacent guide plates that are close to each other. The number of guide plates and the mounting plate three together form a nearly complete closed ring.

[0012] Preferably, the power supply is electrically connected to the control system, and the control system is electrically connected to both the switch and the rotating motor.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: (1) The present invention proposes an electric wrench, which is provided with a mounting plate, a mounting shaft, an active impact block, a driven impact block, two balls, a buffer spring and a mounting base. The mounting plate is driven to rotate by the drive mechanism, which in turn drives the mounting shaft to rotate. The active impact block is driven to rotate synchronously by the cooperation of the spiral groove and the balls. The driven impact block is driven to rotate by the drive groove, which in turn drives the main shaft to rotate to achieve initial tightening. The increased load on the main shaft causes the driven impact block to be obstructed. The spiral groove pushes the balls to drive the active impact block to move backward and separate from the driven impact block by overcoming the pressure of the buffer spring. The active impact block is accelerated to reset by the buffer spring and guided by the spiral groove, and it collides with the driven impact block to generate an impact force. The impact force is transmitted to the driven impact block and the main shaft to achieve high-frequency impact tightening of the fastener.

[0014] (2) The present invention proposes an electric wrench, which is equipped with a rotating motor, a gear one, two gear twos, a mounting plate one and a gear three. The rotating motor drives the gear one to rotate at high speed. The gear two rotates and revolves under the combined action of the gear one and the fixed gear three, thereby driving the mounting plate one to rotate synchronously. This realizes the conversion of the high speed and low torque of the rotating motor into high torque output, providing stable and strong power for the impact assembly. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a perspective view of the surface of the present invention.

[0017] Figure 3 This is a perspective view highlighting the active impact block in this invention.

[0018] Figure 4 This is a perspective view highlighting the driven impact block in this invention.

[0019] Figure 5 This is a perspective view highlighting the mounting shaft in this invention.

[0020] Figure 6 This is a perspective view highlighting gear two in this invention.

[0021] In the diagram: 1. Housing; 10. Power supply; 11. Switch; 12. Control system; 13. Spindle; 201. Mounting plate one; 202. Mounting shaft; 203. Active impact block; 204. Driven impact block; 205. Ball bearing; 206. Buffer spring; 207. Mounting base; 301. Rotating motor; 302. Gear one; 303. Gear two; 304. Mounting slot plate one; 305. Gear three; 501. Buffer ring; 601. Mounting plate two; 602. Guide plate; 603. Mounting plate three. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] One preferred embodiment of this application, such as Figures 1 to 6As shown, an electric wrench includes: a mounting housing 1, of which there are two symmetrically joined together; a power supply 10, a switch 11, a control system 12, a spindle 13, a drive mechanism, an impact component, and a heat dissipation component; the power supply 10 is disposed between the bottoms of the two mounting housings 1; each of the two mounting housings 1 has a mounting opening at the middle of one end, and the switch 11 is fixedly installed between the inner walls on both sides of the two mounting openings; the control system 12 is disposed at the bottom of the inner wall on one side of one of the mounting housings 1; the spindle 13 is disposed on the outer wall of one end of one of the mounting housings 1; the drive mechanism is mounted on the inner wall of one end of one of the mounting housings 1 for driving the spindle 13 to rotate; the impact component is mounted on the other end of the inner wall on one side of one of the mounting housings 1 for impacting the spindle 13; and the heat dissipation component is disposed at one end of one of the mounting housings 1 for dissipating heat from the drive mechanism.

[0026] After all components are assembled, the power supply 10 uses a battery or power adapter to power the whole machine. The operator sends a start or stop signal through the switch 11. After receiving the signal, the control system 12 adjusts the output torque and drive mechanism speed according to the actual operation requirements to adapt to different connection materials and fastener sizes, ensuring operational stability. When the switch 11 is pressed to start the equipment, the control system 12 connects the power supply 10 and triggers the drive mechanism to operate. The drive mechanism drives the impact component to move, and the impact component further drives the spindle 13 to rotate, realizing the tightening operation of screws or nuts. When the spindle 13 drives the fastener to tighten to the point of load jamming, the impact component starts the impact mode and transmits the impact torque to the spindle 13 to ensure the fastener is tightened stably. During the entire operation, the heat dissipation component runs continuously to dissipate heat from the drive mechanism, preventing the internal temperature of the two mounting shells 1 from getting too high and ensuring the stable operation of each component. The operator can send a stop signal at any time through the switch 11, and the control system 12 immediately cuts off the power supply to the drive mechanism, impact component and heat dissipation component, and the whole machine stops operating.

[0027] Further reference Figures 3-6The impact assembly includes: a mounting plate 201, a mounting shaft 202, an active impact block 203, a driven impact block 204, two ball bearings 205, a buffer spring 206, and a mounting base 207. The mounting plate 201 is vertically mounted on the inner wall of one side of one of the mounting housings 1. One end of the mounting shaft 202 is fixedly mounted at the center of one end of the mounting plate 201. Both sides of the mounting shaft 202 have spiral grooves arranged in an inverted human shape. The active impact block 203 is fitted over the mounting shaft 202. A limiting groove is formed on the inner circumference of the active impact block 203, and the limiting groove is annular. The two ball bearings 205 are respectively positioned on... Between the limiting groove and the two spiral grooves, the buffer spring 206 is fixedly installed between one end of the active impact block 203 and one end of the mounting plate 201. Both sides of the other end of the active impact block 203 are provided with drive grooves. The mounting base 207 is vertically fixedly installed between the other ends of the inner walls of the two mounting shells 1 that are close to each other. One end of the main shaft 13 passes through the center of one end of the mounting base 207. The driven impact block 204 is vertically set at the other end of the mounting base 207. The center of one end of the driven impact block 204 is fixedly connected to one end of the main shaft 13. Both sides of the driven impact block 204 are located in the two drive grooves.

[0028] After the drive mechanism is started, it drives the mounting plate 201 to rotate. The mounting plate 201 then synchronously drives the mounting shaft 202, which is fixedly connected to it, to rotate. At this time, the active impact block 203 engages with the inverted human-shaped spiral grooves on both sides of the mounting shaft 202 via two balls 205 in the limiting groove. The driven impact block 204 is located in two drive grooves on the other end of the active impact block 203. When the active impact block 203 rotates, it drives the driven impact block 204 to rotate synchronously via the drive grooves, thereby driving the main shaft 13, which is fixedly connected to the driven impact block 204, to rotate, thus achieving the initial rotation of the screw or nut. During the tightening operation, when the spindle 13 drives the fastener to rotate until the end face of the fastener contacts the end face of the workpiece, the resistance on the spindle 13 increases sharply, which in turn increases the resistance of the driven impact block 204. The mounting shaft 202 continues to rotate with the mounting plate 201, and the inverted human-shaped spiral groove pushes the ball 205 to move. The ball 205 drives the active impact block 203 to overcome the friction of the spiral groove and the elastic pressure of the buffer spring 206, moving horizontally towards the mounting plate 201. During this process, the active impact block 203 remains in a rotating state, that is, the horizontal movement and rotation are synchronized. When the active impact... After block 203 moves a certain distance, its drive groove disengages from the driven impact block 204. The active impact block 203 continues to rotate with the mounting shaft 202. When the ball 205 rotates to the middle boundary of the inverted human-shaped spiral groove, the buffer spring 206 releases its elastic potential energy, pushing the active impact block 203 to reset instantly. At the same time, the inverted human-shaped spiral groove exerts a force on the ball 205, causing the active impact block 203 to generate angular acceleration. While resetting horizontally, it accelerates its rotation. At this time, the drive groove of the active impact block 203 re-engages with the driven impact block 204 and collides, transmitting the impact force. The impact force is transmitted to the driven impact block 204, and then to the main shaft 13 through the driven impact block 204, ultimately acting on the fastener to achieve fastening. Since the mounting plate 201 and the mounting shaft 201 always maintain high-frequency rotation, the process of the active impact block 203 moving backward, rotating back, and colliding with the driven impact block 204 will repeat repeatedly and at high frequency, continuously generating impact force to ensure that the fastener is fastened to the required state. Throughout the process, the mounting seat 207 always provides stable support and positioning for the main shaft 13 and the driven impact block 204, ensuring that the impact action is carried out accurately and orderly.

[0029] Further reference Figures 3-6The drive mechanism includes: a rotary motor 301, a first gear 302, two second gears 303, a mounting plate 304, and a third gear 305. The rotary motor 301 is fixedly installed on the inner wall of one end of one of the mounting housings 1. The first gear 302 is sleeved on the output shaft of the rotary motor 301. A second drive groove is opened at the center of the other end of the mounting plate 301, and the first gear 302 is located in the second drive groove. The mounting plate 301 has drive grooves on both sides, and the two second gears 303 are vertically rotatable. Between the inner walls of the two ends of the two drive slots 3, two gears 2 303 are respectively meshed with gear 1 302. Mounting slot plate 1 304 is vertically fixed between one end of the inner walls of the two mounting housings 1. The output shaft of the rotating motor 301 passes through the center of the inner wall of one end of mounting slot plate 1 304. The other end of mounting plate 201 is rotatably mounted on the inner wall of one end of mounting slot plate 1 304. Gear 3 305 is fixedly mounted on the inner circumference of mounting slot plate 1 304. Gear 3 305 is arranged in a ring.

[0030] After the rotary motor 301 is started, its output shaft begins to rotate at high speed. Gear 1 302 rotates synchronously at high speed with the output shaft. Since gear 2 303 meshes with both the high-speed rotating gear 1 302 and the stationary gear 3 305, gear 2 303, driven by gear 1 302, will rotate around its own axis and revolve around the axis of gear 1 302. Both gears 2 303 are vertically mounted between the inner walls of the drive groove 3 of the mounting plate 1 201, and their mounting shafts are fixedly connected to the mounting plate 1 201. Therefore, the revolve motion of gear 2 303 will synchronously drive the mounting plate 1 201 to rotate around the output shaft of the rotary motor 301, realizing the synchronous rotation of gear 2 303 and the mounting plate 1 201, and converting the high-speed rotation of the output shaft of the rotary motor 301 into a high-speed rotation. Low-speed, high-torque output of mounting plate 201: The rotating motor 301 outputs high-speed, low-torque, which is transmitted to two gears 303 through gear 302. Under the constraint of stationary gear 305, gear 303 converts high-speed rotation into revolution around the sun gear. The revolution speed is much lower than the rotation speed of gear 302. At the same time, according to the torque amplification principle of planetary transmission, the torque is amplified proportionally as the speed decreases. Finally, the amplified high torque is transmitted to the subsequent impact component through mounting plate 201, providing a sufficient power foundation for the impact component. Throughout the process, mounting plate 304 not only fixes gear 305, but also provides rotational support for the output shaft of rotating motor 301 and mounting plate 201, ensuring smooth transmission of the entire drive mechanism and avoiding problems such as meshing jamming and torque loss.

[0031] Further reference Figures 3-6The driven impact block 204 is arranged in the shape of a dart, with symmetrical tips on both sides. The inner walls of the drive groove are arranged to fit the edges of the driven impact block 204.

[0032] The inner walls of the drive groove of the active impact block are fitted to the two edges of the dart-shaped driven impact block. When the active impact block rotates, the drive groove engages with the tips and edges of the driven impact block, causing the driven impact block to rotate synchronously. When an impact is required, the active impact block moves relative to the driven impact block, and the drive groove disengages from the driven impact block. After the active impact block resets, the drive groove re-engages precisely with the edges of the driven impact block and collides, thus transmitting the impact force. The driven impact block has symmetrical tips, and the inner walls of the drive groove are fitted to its edges. This design serves several purposes: first, it fits the dart-shaped structure, making the fit tighter and preventing slippage or deviation during transmission, ensuring efficient power transmission; second, the symmetrical tips and the fitted drive groove ensure that the impact force is evenly distributed on both sides of the driven impact block, preventing excessive force on one side that could lead to wear or deformation of the components; and third, the fitted design reduces the gap between the two, making the impact force more concentrated.

[0033] Further reference Figure 3 and Figure 6 The outer circumferential wall of the mounting plate 304 is provided with a mounting groove, and a buffer ring 501 is fixedly installed on the inner circumferential wall of the mounting groove.

[0034] When the drive mechanism is running, the mounting slot plate 304 remains stationary. When the transmission components in the drive mechanism generate vibration or impact, or when there is slight friction or collision between the mounting plate 201 and the mounting slot plate 304, the buffer ring 501 will absorb vibration energy and buffer impact force through its own elastic deformation, preventing vibration and impact from being directly transmitted to the mounting slot plate 304 and the mounting housing 1. At the same time, it will alleviate the force generated during transmission, effectively absorb the vibration and impact generated by the operation of the drive mechanism, reduce rigid collisions between components, reduce transmission noise, and improve the smoothness of the drive mechanism operation.

[0035] Further reference Figures 3-6The heat dissipation assembly includes: two mounting plates 601, several guide plates 602, and a third mounting plate 603. The two mounting plates 601 are vertically fixed between the inner walls of two adjacent mounting housings 1. The two mounting plates 601 are respectively fitted onto both ends of the rotating motor 301. Each mounting plate 601 has equidistant mounting openings 602. The guide plates 602 are hollow fan-shaped. Several guide plates 602 are fixedly installed between the inner walls of the several mounting openings 602 on both sides. Several guide plates 603 are located on the two mounting plates 601. 2 are respectively connected and arranged in a corresponding manner. The bottom of the guide plate 602 is provided with a heat dissipation opening. The mounting plate 3 603 is fixedly installed between the two mounting plates 2 601. The mounting plate 3 603 is arranged in a ring shape. Several protrusions are fixedly installed at equal intervals on the inner circumference of the mounting plate 3 603. The protrusions are respectively embedded in the circumferential gap between several adjacent guide plates 602. The two sides of the protrusions are respectively attached to the outer wall of the two adjacent guide plates 602 that are close to each other. The several guide plates 602 and the mounting plate 3 603 together form a nearly complete closed ring.

[0036] When the drive mechanism generates heat during operation, the heat diffuses to the surroundings. The guide plate 602 guides the heat flow through its hollow structure and the heat dissipation opening at the bottom. The protrusion of the mounting plate 603 fits against the guide plate 602, not only filling the gaps and reducing heat leakage, but also assisting in heat conduction. The two mounting plates 601 provide stable support for the guide plate 602 and the mounting plate 603, ensuring that the entire heat dissipation assembly continuously and efficiently dissipates heat from the drive mechanism. This design increases the heat dissipation area and improves the heat flow efficiency through the hollow fan-shaped structure and heat dissipation opening of the guide plate 602, and fills the gaps between the guide plates 602 through the protruding fitting design of the mounting plate 603, forming a nearly closed heat dissipation channel to reduce heat loss. At the same time, the symmetrical fixed setting of the two mounting plates 601 ensures the installation stability of the heat dissipation assembly. The overall structure is adapted to the internal space of the mounting housing 1, which can continuously and stably reduce the operating temperature of the drive mechanism and avoid the impact of high temperature on the operating stability and service life of the drive mechanism.

[0037] Further reference Figures 3-6 The power supply 10 is electrically connected to the control system 12, and the control system 12 is electrically connected to the switch 11 and the rotating motor 301 respectively.

[0038] Power supply 10 provides stable power to the entire control system 12. It is electrically connected to the control system 12 and transmits power to the control system 12. The control system 12 is electrically connected to switch 11 and rotary motor 301. When the operator presses switch 11, switch 11 sends a start signal to the control system 12. After receiving the signal, the control system 12 connects the power supply circuit of rotary motor 301 and controls rotary motor 301 to start and run. When the operator presses switch 11 again or when it is no longer necessary to continue running, switch 11 sends a stop signal to the control system 12. The control system 12 immediately cuts off the power supply to rotary motor 301, causing rotary motor 301 to stop running. At the same time, the control system 12 can adjust the operating status of rotary motor 301 according to actual needs to ensure the orderly operation of the entire device.

[0039] Working Principle: Power supply 10 uses a battery or power adapter to power the entire machine. It is electrically connected to control system 12 and transmits electrical energy. Control system 12 is electrically connected to switch 11 and rotating motor 301. The operator sends a start or stop signal through switch 11. After receiving the signal, control system 12 can adjust the output torque and drive mechanism speed according to actual operation requirements, adapting to different connection materials and fastener sizes. After pressing switch 11 to start the equipment, control system 12 connects the power supply circuit of rotating motor 301, controlling rotating motor 301 to start and rotate at high speed. Gear 1 302 rotates synchronously with the output shaft of rotating motor 301. Gear 2 303 meshes with gear 1 302 and is stationary. Gear 305 meshes with gear 1. Driven by gear 1 302, gear 2 303 rotates both around its own axis and revolves around the axis of gear 1 302, thus synchronously driving the mounting plate 1 201 to rotate. This converts the high-speed, low-torque force of the rotating motor 301 into the low-speed, high-torque force of the mounting plate 1 201 and transmits it to the impact assembly. The mounting plate 1 201 drives the mounting shaft 202 to rotate. The active impact block 203 engages with the inverted human-shaped spiral groove on the mounting shaft 202 through the ball bearing 205. The inner walls of its drive groove 1 are attached to the two edges of the dart-shaped driven impact block 204. When the active impact block 203 rotates, it drives the driven impact block 204 to rotate synchronously through the drive groove 1, thereby driving the main shaft 13 to rotate, realizing the rotation of the screw or thread. In the initial tightening operation, after the spindle 13 drives the fastener to rotate until it contacts the end face of the workpiece, the resistance on the spindle 13 increases sharply. The mounting shaft 202 continues to rotate, and the spiral groove pushes the ball 205 to move, causing the active impact block 203 to overcome friction and the pressure of the buffer spring 206 and move horizontally towards the mounting plate 201 while maintaining rotation, until the drive groove 201 disengages from the driven impact block 204. When the ball 205 rotates to the middle boundary of the spiral groove, the buffer spring 206 releases its elastic potential energy, pushing the active impact block 203 to instantly reset and accelerate rotation. The drive groove 201 then collides with the driven impact block 204 again, transmitting the impact force to the spindle 13 and acting on the fastener. Due to the mounting plate 201... The high-frequency rotation of the mounting shaft 202 and the impact process are repeated to ensure that the fasteners are tightened to the required state. During the operation of the drive mechanism, the buffer ring 501 absorbs the vibration and impact generated by the transmission components through its own elastic deformation, relieves transmission stress, reduces noise, and improves the smoothness of the drive mechanism. At the same time, the heat dissipation components work continuously. The guide plate 602 guides the heat flow through the hollow structure and heat dissipation opening 1. The protrusions of the mounting plate 3 603 fill the gaps between the guide plates 602 and assist in the conduction of heat, so as to achieve efficient heat dissipation of the drive mechanism and avoid high temperature affecting the operation of the components. The operator can send a stop signal at any time through the switch 11, and the control system 12 immediately cuts off the power supply to the relevant components and the whole machine stops running.

[0040] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An electric wrench, comprising: Mounting housing (1), wherein there are two mounting housings (1), the two mounting housings (1) are symmetrically spliced ​​together as one unit, characterized in that it further includes: Power supply (10): The power supply (10) is disposed between the bottoms of the two mounting housings (1); Switch (11): An installation opening is provided at the middle position of one end of each of the two mounting housings (1), and the switch (11) is fixedly installed between the inner walls on both sides of the two installation openings. A control system (12) is disposed at the bottom of one of the inner walls of the mounting housing (1); Main spindle (13): The main spindle (13) is disposed on the outer wall of one end of one of the mounting housings (1); Drive mechanism: The drive mechanism is mounted on the inner wall of one end of one of the mounting housings (1) for driving the spindle (13) to rotate; Impact assembly: The impact assembly is mounted on the other end of the inner wall of one side of one of the mounting housings (1) for impacting the spindle (13). Heat dissipation component: The heat dissipation component is disposed at one end of one of the mounting housings (1) for dissipating heat from the drive mechanism.

2. An electric wrench as described in claim 1, characterized in that, The impact assembly includes: a mounting plate (201), a mounting shaft (202), an active impact block (203), a driven impact block (204), two balls (205), a buffer spring (206), and a mounting base (207). The mounting plate (201) is vertically mounted on the inner wall of one of the mounting housings (1). One end of the mounting shaft (202) is fixedly mounted at the center of one end of the mounting plate (201). Both sides of the mounting shaft (202) are provided with spiral grooves, which are arranged in an inverted human shape. The active impact block (203) is sleeved on the mounting shaft (202). The inner circumference of the active impact block (203) is provided with a limiting groove, which is arranged in a ring. The two balls (205) are respectively disposed on the inner wall of the mounting shaft (204). Between the limiting groove and the two spiral grooves, the buffer spring (206) is fixedly installed between one end of the active impact block (203) and one end of the mounting plate (201). Both sides of the other end of the active impact block (203) are provided with drive grooves. The mounting base (207) is vertically fixedly installed between the other ends of the inner walls of the two mounting shells (1) that are close to each other. One end of the main shaft (13) passes through the center position of one end of the mounting base (207). The driven impact block (204) is vertically arranged at the other end of the mounting base (207). The center position of one end of the driven impact block (204) is fixedly connected to one end of the main shaft (13). Both sides of the driven impact block (204) are located in the two drive grooves.

3. An electric wrench as described in claim 2, characterized in that, The driving mechanism includes: a rotary motor (301), a first gear (302), two second gears (303), a mounting plate (304), and a third gear (305). The rotary motor (301) is fixedly installed on the inner wall of one end of one of the mounting housings (1). The first gear (302) is sleeved on the output shaft of the rotary motor (301). A second driving groove is opened at the center of the other end of the mounting plate (201), and the first gear (302) is located in the second driving groove. The third driving groove is opened on both sides of the mounting plate (201). The two second gears (303) are vertically rotatably installed between the inner walls of the two ends of the third driving grooves. Two gears (303) are respectively meshed with gear (302). The mounting plate (304) is vertically fixed between one end of the inner wall on both sides of the two mounting shells (1). The output shaft of the rotating motor (301) passes through the center of the inner wall of one end of the mounting plate (304). The other end of the mounting plate (201) is rotatably mounted on the inner wall of one end of the mounting plate (304). Gear (305) is fixedly mounted on the inner circumference of the mounting plate (304). Gear (305) is arranged in a ring. Gear (305) is respectively meshed with two gears (303).

4. An electric wrench as described in claim 2, characterized in that, The driven impact block (204) is arranged in the shape of a dart. The driven impact block (204) has symmetrical tips on both sides. The inner walls of the two sides of the drive groove are arranged to fit the edges of the driven impact block (204).

5. An electric wrench as described in claim 3, characterized in that, The outer circumferential wall of the mounting slot plate (304) is provided with a mounting slot, and a buffer ring (501) is fixedly installed on the inner circumferential wall of the mounting slot.

6. An electric wrench as described in claim 3, characterized in that, The heat dissipation assembly includes: two mounting plates (601), several guide plates (602), and a mounting plate (603). The two mounting plates (601) are arranged vertically and fixedly installed between one end of the inner wall of the two mounting shells (1) that are close to each other. The two mounting plates (601) are respectively fitted onto the two ends of the rotating motor (301). The two mounting plates (601) are equally spaced and have two mounting openings. The guide plates (602) are hollow and fan-shaped. Several guide plates (602) are fixedly installed between the inner walls on both sides of several mounting openings. Several guide plates (602) on the two mounting plates (601) are respectively connected in a corresponding manner. The bottom of the guide plate (602) has a heat dissipation opening. The mounting plate (603) is fixedly installed between the two mounting plates (601).

7. An electric wrench as described in claim 6, characterized in that, The mounting plate three (603) is arranged in a ring shape. Several protrusions are fixedly installed on the inner circumference of the mounting plate three (603) at equal intervals. The protrusions are respectively embedded in the circumferential gap between several adjacent guide plates (602). The two sides of the protrusions are respectively attached to the outer wall of the two adjacent guide plates (602) that are close to each other. The several guide plates (602) and the mounting plate three (603) together form a nearly complete closed ring.

8. An electric wrench as described in claim 3, characterized in that, The power supply (10) is electrically connected to the control system (12), and the control system (12) is electrically connected to the switch (11) and the rotating motor (301) respectively.

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