Electric screwdriver with pressure-torsion sensor

Abstract

According to the electric screwdriver with the pressure-torsion sensor, the electric screwdriver is provided with the shell, the rotating motor, the main shaft and other components, normal work of the electric screwdriver can be met, the first sensor body and the second sensor body are integrated, and therefore the electric screwdriver can detect radial torsion data and pressing data at the same time; the torque and the vertical acting force can be more accurately controlled in the operation process of the electric screwdriver, and therefore the assembling precision and controllability are improved. The first sensor body and the second sensor body are reasonable in design, respectively sleeve the outer ring of the main shaft and are connected with the shell. The structural design not only ensures the stability and durability of the sensor, but also avoids direct connection between the sensor and the main shaft or the rotating motor, and reduces the risk of damage to the sensor. Compared with a traditional electric screwdriver, the electric screwdriver with the pressure-torsion sensor is remarkably improved in function. Besides the basic rotating function, the torque and pressing data can be monitored and fed back in real time.

Description

Technical Field

[0001] The invention relates to the technical field of electric screwdrivers, and in particular to an electric screwdriver with a compression-torsion sensor. Background Art

[0002] Electric screwdrivers, also known as electric screwdrivers, are electric tools used to tighten and loosen screws and nuts. They are indispensable tools in the assembly industry. In the process of automated assembly, electric screwdrivers are commonly used tightening tools, and their performance directly affects assembly quality and production efficiency.

[0003] Traditional electric screwdrivers usually only provide a single rotation function, but cannot monitor and feedback torque data in real time, which limits their application in high-precision operations. In order to meet the needs of high-precision operations, some electric screwdrivers with torque sensors have appeared on the market. These electric screwdrivers use built-in torque sensors to monitor and feedback torque data in real time, thereby improving the accuracy and controllability of the operation. However, existing electric screwdrivers with torque sensors can usually only collect radial torque data, but cannot collect downward pressure data at the same time.

[0004] Therefore, it is necessary to provide an electric screwdriver with a compression-torque sensor to solve the above technical problems. Summary of the invention

[0005] The present invention provides an electric screwdriver with a compression-torque sensor to solve the problem that most electric screwdrivers in the prior art have unreasonable structural designs, resulting in deficiencies in real-time monitoring and feedback of torque and downward pressure data.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an electric screwdriver with a compression and torque sensor, which comprises:

[0007] shell;

[0008] A rotating motor is arranged in the housing, a rotating part is arranged at the bottom end of the rotating motor, and a driving shaft is arranged on the rotating part;

[0009] A spindle is disposed in the housing, one end of the spindle is connected to the drive shaft, and the other end of the spindle is provided with a bit; and

[0010] a first sensor body having a hollow cylindrical structure, wherein the first sensor body is sleeved on the outer ring of the main shaft, the top end of the first sensor body is connected to the rotating part, the outer side of the bottom end of the first sensor body is connected to the housing, and a first strain device is arranged in the middle of the first sensor body, and the first strain device is used to collect radial torque data; and

[0011] The second sensor body is a circular ring structure. The second sensor body is sleeved on the outer ring of the main shaft. The second sensor body is connected to the housing. The second sensor body is connected to the main shaft. The second sensor is provided with a second strain device. The second strain device is used to collect downward pressure and radial torque data.

[0012] In the present invention, the electric screwdriver with a compression-torsion sensor also includes:

[0013] A motor flange is sleeved on the outer ring of the driving shaft, and the top end of the motor flange is connected to the rotating part;

[0014] a first sensor flange, wherein the first sensor flange is connected to the motor flange, and an inner ring of the first sensor flange is engaged with an outer ring of the first sensor body; and

[0015] The anti-collision isolation ring is located between the housing and the first sensor flange, and the anti-collision isolation ring is sleeved on the outer ring of the first sensor flange.

[0016] In the present invention, the electric screwdriver with a compression-torsion sensor also includes:

[0017] An elastic member is disposed between the driving shaft and the main shaft, and the elastic member elastically presses the main shaft away from the driving shaft.

[0018] In the present invention, a first limit plate is arranged on the outer side of the main shaft; the electric screwdriver with a compression and torsion sensor also includes:

[0019] a second sensor flange, wherein the top of the inner circle of the second sensor flange is connected to the bottom of the first sensor body, the outer side of the bottom of the second sensor is connected to the housing, and the second sensor body is located in the second sensor flange; and

[0020] A plane bearing is sleeved on the outside of the main shaft, and the plane bearing is arranged between the first limiting piece and the second sensor body.

[0021] In the present invention, the first sensor body comprises:

[0022] A first connecting portion, located at the top of the first sensor body, the first connecting portion being connected to the first sensor flange;

[0023] A second connection portion, located at the bottom end of the first sensor body, the second connection portion being connected to a second sensor flange; and

[0024] The deformation part is located in the middle of the first sensor body, and the cross-sectional diameter of the deformation part is smaller than the cross-sectional diameters of the first connecting part and the second connecting part. The outer side of the deformation part is connected to the first strain device.

[0025] In the present invention, the electric screwdriver with compression and torsion sensor also includes a second limit plate, which is arranged in the second sensor flange and located between the first sensor body and the second sensor body, and the second limit plate limits the position of the second sensor body.

[0026] In the present invention, the housing comprises:

[0027] A main housing is a hollow cylindrical structure, an opening is provided at the bottom end of the main housing, and the rotating motor is located inside the main housing; and

[0028] a front cover, located below the main housing, the front cover being used to close the opening, the second sensor body being connected to the front cover; and

[0029] A connecting piece connects the main shell and the front cover.

[0030] In the present invention, a slot is provided at the top end of the main shaft, the driving shaft is plugged into the slot, and the elastic member is arranged in the slot.

[0031] In the present invention, the outer ring cross-section of the first connecting portion has a polygonal structure, and the inner ring cross-section structure of the first sensor flange matches the outer ring cross-section structure of the top end of the first sensor flange.

[0032] In the present invention, the electric screwdriver with a compression-torsion sensor also includes:

[0033] A deep groove ball bearing is sleeved on the main shaft, the inner ring of the deep groove ball bearing is connected to the bottom end of the first limit plate, and the outer side of the deep groove ball bearing is connected to the second sensor flange; and

[0034] A snap ring is arranged in the second sensor flange, the snap ring is located at the bottom end of the outer ring of the deep groove ball bearing, and the snap ring is used to limit the position of the deep groove ball bearing.

[0035] In the present invention, the electric screwdriver with a compression-torsion sensor also includes:

[0036] A mounting plate connected to the second sensor flange; and

[0037] An electrostatic brush is arranged on the mounting plate and located on the side of the main shaft, and the electrostatic brush is used to eliminate static electricity of the main shaft.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: the electric screwdriver with a pressure-torque sensor of the present invention can meet the normal use of the electric screwdriver through the electric screwdriver having a housing, a rotating motor, a main shaft and other components. By integrating the first sensor body and the second sensor body, the electric screwdriver with a pressure-torque sensor of the present application can simultaneously collect radial torque data and downward pressure data. This comprehensive data acquisition capability enables the electric screwdriver to more accurately control the torque and vertical force during operation, thereby improving the accuracy and controllability of assembly. The first sensor body and the second sensor body are reasonably designed, and are respectively sleeved on the outer ring of the main shaft and connected to the housing. This structural design not only ensures the stability and durability of the sensor, but also avoids the direct connection between the sensor and the main shaft or the rotating motor, reducing the risk of sensor damage. Compared with traditional electric screwdrivers, the electric screwdriver with a pressure-torque sensor of the present application has been significantly improved in function. In addition to the basic rotation function, it can also monitor and feedback torque and downward pressure data in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0040] Figure 1 It is a stereoscopic diagram of the overall structure of an electric screwdriver with a compression-torsion sensor according to a preferred embodiment of the present invention.

[0041] Figure 2 It is a cross-sectional view of the overall structure of an electric screwdriver with a compression-torsion sensor according to a preferred embodiment of the present invention.

[0042] Figure 3 It is a schematic diagram of the connection structure between the first sensor body and the second sensor body and the main shaft according to a preferred embodiment of the present invention.

[0043] Figure 4 This is an exploded view of the overall structure of an electric screwdriver with a compression-torsion sensor according to a preferred embodiment of the present invention.

[0044] 1. The outer shell; 111. The main shell; 112. The front cover; 113. The connecting piece; 12. The rotating motor; 121. The rotating part; 122. The driving shaft; 123. The motor flange; 13. The main shaft; 131. The first limiting piece; 132. The slot; 14. The first sensor body; 141. The first connecting part; 142. The deformation part; 143. The second connecting part; 15. The second sensor body; 16. The screwdriver; 17. The first sensor flange; 171. The first receiving groove; 172. The first fixing groove; 18. The anti-collision isolation ring; 19. The elastic part; 20. The second sensor flange; 201. The second receiving groove; 202. The first through hole; 203. The second fixing groove; 21. The plane bearing; 22. The second limiting piece; 23. The deep groove ball bearing; 24. The retaining ring; 25. The mounting plate; 26. The electrostatic brush. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0046] The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only for reference to the orientation of the drawings. The directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0047] The terms "first", "second", etc. in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be used as a limitation on the order of precedence.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The following is a preferred embodiment of an electric screwdriver with a compression-torsion sensor provided by the present invention that can solve the above technical problems.

[0050] Please refer to Figure 1 and Figure 2 and Figure 3,in Figure 1 This is a stereoscopic diagram of the overall structure of an electric screwdriver with a compression and torsion sensor according to a preferred embodiment of the present invention. Figure 2 It is a cross-sectional view of the overall structure of an electric screwdriver with a compression-torsion sensor according to a preferred embodiment of the present invention.

[0051] In the figures, structurally similar elements are denoted by the same reference numerals.

[0052] The present invention provides an electric screwdriver with a compression and torque sensor, which includes a housing 11, a rotating motor 12, a spindle 13, a first sensor body 14 and a second sensor body 15; the rotating motor 12 is arranged in the housing 11, and a rotating part 121 is arranged at the bottom of the rotating motor 12, and the rotating part 121 is provided with a driving shaft 122; the spindle 13 is arranged in the housing 11, one end of the spindle 13 is connected to the driving shaft 122, and the other end is provided with a screwdriver head 16, the screwdriver head 16 passes through the bottom end of the housing 11 and extends, and the screwdriver head 16 is used to contact with the screw; the first sensor body 14 is a hollow cylindrical structure, and the first sensor body 15 is provided with a first screwdriver head 16. The sensor body 14 is sleeved on the outer ring of the main shaft 13, the top of the first sensor body 14 is connected to the rotating part 121, the outer side of the bottom end of the first sensor body 14 is connected to the outer shell 11, and a first strain device is arranged in the middle of the first sensor body 14, and the first strain device is used to collect radial torque data; the second sensor body 15 is a circular ring structure, the second sensor body 15 is sleeved on the outer ring of the main shaft 13, the second sensor body 15 is connected to the outer shell 11, the second sensor body 15 is connected to the main shaft 13, and the second sensor is provided with a second strain device, and the second strain device is used to collect downward pressure data.

[0053] The electric screwdriver has key components such as a housing 11, a rotating motor 12, and a spindle 13, which can meet the normal use requirements of the electric screwdriver. The radial torque and downward force data are collected respectively by two sensors (a first sensor body 14 and a second sensor body 15), thereby improving the control accuracy of the electric screwdriver in the tightening operation and the accuracy of torque feedback. The first sensor body 14 is sleeved on the outer ring of the spindle 13, and the rotating motor 12 and the spindle 13 are connected and driven inside the first sensor body 14 to ensure that the spindle 13 drives the screwdriver head 16 to rotate stably; the top of the first sensor body 14 is connected to the rotating part 121, and the bottom is connected to the housing 11, with a tight structural connection; torque will be generated between the upper and lower parts of the first sensor body 14 for detection, and the first sensor body 14 can effectively transmit torque to avoid energy loss and sensor displacement. The second sensor body 15 is sleeved on the outer ring of the spindle 13 and maintains a stable connection with the housing 11 and the spindle 13. During the tightening operation, when the screwdriver bit 16 contacts the screw and applies pressure, the spindle 13 will be subjected to a reaction force from the screw. This reaction force includes downward pressure data in the vertical direction. The second strain device on the second sensor body 15 can detect and prevent the electric screwdriver from accidentally starting when not screwing, thereby improving the safety of the electric screwdriver during use.

[0054] The connection structure of the first sensor body 14 in this embodiment is described as follows:

[0055] Combination Figure 2 and Figure 3In this embodiment, the electric screwdriver with a compression-torsion sensor further includes a motor flange 123, a first sensor flange 17, and an anti-collision isolation ring 18; the motor flange 123 is sleeved on the outer ring of the drive shaft 122, and the top of the motor flange 123 is connected to the rotating part 121; the first sensor flange 17 is connected to the motor flange 123, and the inner ring of the first sensor flange 17 is engaged with the outer ring of the first sensor body 14; the anti-collision isolation ring 18 is located between the housing 11 and the first sensor flange 17, and the anti-collision isolation ring 18 is sleeved on the outer ring of the first sensor flange 17. The design of the motor flange 123, the first sensor flange 17, and the anti-collision isolation ring 18 enhances the stability and safety of the internal structure of the electric screwdriver. The anti-collision isolation ring 18 effectively prevents direct collision between the housing 11 and the first sensor flange 17, thereby improving the durability of the product. When the first sensor body 14 is subjected to horizontal force, the force will first act on the first sensor flange 17 through the anti-collision isolation ring 18, which can protect the deformation plane of the first sensor body 14 from being affected by the horizontal force and ensure the accuracy of the detection of the first sensor body 14. The first sensor flange 17 is used in conjunction with the anti-collision isolation ring 18 to fill the gap between the first sensor flange 17 and the housing 11. When the electric screwdriver is tilted, the first sensor body 14 will not collide with the housing 11. This structure is designed to isolate the torsion between the housing 11 and the first sensor body 14.

[0056] In this embodiment, a first receiving groove 171 is provided outside the first sensor flange 17, and the anti-collision isolation ring 18 is engaged with the first receiving groove 171. The design of the first receiving groove 171 enables the anti-collision isolation ring 18 to be more firmly engaged outside the first sensor flange 17, further enhancing the stability of the structure.

[0057] In this embodiment, the outer cross-section of the top of the first sensor body 14 is a polygonal structure, and the inner cross-section of the first sensor flange 17 matches the outer cross-section of the top of the first sensor body 14. The polygonal structure increases the contact area and friction between the first sensor flange 17 and the connection component, and improves the stability of the connection.

[0058] Combination Figure 3 and Figure 4In this embodiment, the first sensor body 14 includes a first connection part 141, a second connection part 143 and a deformation part 142; the first connection part 141 is located at the top of the first sensor body 14, and the first connection part 141 is connected to the first sensor flange 17; the second connection part 143 is located at the bottom of the first sensor body 14, and the second connection part 143 is connected to the housing 11; the deformation part 142 is located in the middle of the sensor body, and the cross-sectional diameter of the deformation part 142 is smaller than the cross-sectional diameter of the first connection part 141 and the cross-sectional diameter of the second connection part 143, and the outer side of the deformation part 142 is connected to the first strain device. The upper part of the first sensor body 14 is connected to the motor flange 123 through the first sensor flange 17; the lower part of the first sensor body 14 is connected to the housing 11, and the first strain device installed on the deformation part 142 can detect the torque difference between the upper and lower parts of the first sensor body 14.

[0059] The connection between the first sensor body 14 and the first sensor flange 17 is described as follows:

[0060] Combination Figure 2 and Figure 3 The first sensor flange 17 includes a first fixing portion and a second fixing portion; the top of the first fixing portion is connected to the motor flange 123 by screws; and a first fixing groove 172 is provided in the first fixing portion, the first fixing groove 172 is plugged into the first connecting portion 141, the first fixing portion is snap-connected with the first fixing groove 172, the first connecting portion 141 is a polygonal structure, and the inner wall structure of the first fixing groove 172 matches the structure of the first connecting portion 141.

[0061] The second fixing portion is located at the bottom of the first fixing portion and extends downward. In this embodiment, the second fixing portion is located outside the deformation portion 142, and a space for installing the first strain device is formed between the inner side of the second fixing portion and the deformation portion 142, thereby improving the compactness of the electric batch structure.

[0062] The connection structure between the main shaft 13 and the rotating motor 12 in this embodiment is described as follows:

[0063] Combination Figure 3 and Figure 4 The electric screwdriver with a compression-torque sensor in this embodiment also includes an elastic member 19, which is arranged between the drive shaft 122 and the main shaft 13. The elastic member 19 elastically squeezes the main shaft 13 away from the drive shaft 122, thereby improving the connection between the main shaft 13 and the screw bit 16 driven by the electric screwdriver during use.

[0064] Furthermore, a slot 132 is provided at the top of the main shaft 13, the drive shaft 122 is plugged into the slot 132, and the elastic member 19 is disposed in the slot 132. The structural design is concise and compact, and is easy to install and use.

[0065] In this embodiment, the cross-section of the slot 132 can also be a polygonal structure such as a triangle or a quadrilateral. The cross-sectional structure of the drive shaft 122 matches the cross-sectional structure of the slot 132, thereby improving the stability of the connection between the main shaft 13 and the drive shaft 122 and avoiding wear errors between the main shaft 13 and the drive shaft 122.

[0066] The cross section of the main shaft 13 in this embodiment is circular. A positioning protrusion is provided on the main shaft 13, and the positioning protrusion is located in the slot 132. A positioning groove is provided on the side of the driving shaft 122. The positioning protrusion engages with the positioning groove to improve the stability of the connection between the main shaft 13 and the rotating motor 12.

[0067] The connection structure of the second sensor in this embodiment is described as follows:

[0068] Combination Figure 2 and Figure 3 In this embodiment, a first limiting piece 131 is provided on the outside of the main shaft 13; the electric screwdriver with a compression-torsion sensor also includes a second sensor flange 20 and a plane bearing 21. The top of the inner ring of the second sensor flange 20 is connected to the bottom of the first sensor body 14, the outer side of the bottom of the second sensor is connected to the housing 11, and the second sensor body 15 is located in the second sensor flange 20; the plane bearing 21 is sleeved on the outside of the main shaft 13, and the plane bearing 21 is arranged between the first limiting piece 131 and the second sensor body 15. Through the design of the first limiting piece 131, the second sensor flange 20 and the plane bearing 21, the second sensor body 15 is effectively supported and positioned, and the accuracy and stability of its collected data are improved.

[0069] Combination Figure 4 In this embodiment, the inner ring at the top of the second sensor flange 20 is connected to the bottom of the first sensor body 14, and the outer ring at the top of the second sensor flange 20 is connected to the housing 11. The cross section of the outer ring at the bottom of the first sensor flange 17 is a polygonal structure, and the cross section structure of the inner ring of the second sensor flange 20 matches the cross section structure of the outer ring at the bottom of the first sensor flange 17. That is, the second connecting portion 143 is a polygonal structure, and the top of the second sensor flange 20 is provided with a second fixing groove 203 for engaging the second connecting portion 143. The structure of the second fixing groove 203 matches the structure of the second connecting portion 143. The design of the polygonal structure enhances the connection stability between the second sensor flange 20 and the housing 11, and improves the overall structural strength of the product.

[0070] Furthermore, the electric screwdriver with compression and torsion sensor further includes a second limit piece 22, which is disposed in the second sensor flange 20 and is located between the first sensor body 14 and the second sensor body 15, and the second limit piece 22 defines the position of the second sensor body 15. The design of the second limit piece 22 further defines the position of the second sensor body 15, preventing the second sensor body 15 from moving upward and squeezing the first sensor body 14, thereby improving the accuracy and stability of the data collected.

[0071] Combination Figure 3 and Figure 4 In this embodiment, the electric screwdriver with a compression and torque sensor further includes a deep groove ball bearing 23 and a snap ring 24; the deep groove ball bearing 23 is sleeved on the main shaft 13, the inner ring of the deep groove ball bearing 23 is connected to the bottom end of the first limit plate 131, and the outer side of the deep groove ball bearing 23 is connected to the second sensor flange 20; the snap ring 24 is arranged in the second sensor flange 20, the snap ring 24 is located at the bottom end of the outer ring of the deep groove ball bearing 23, and the snap ring 24 is used to limit the position of the deep groove ball bearing 23. The design of the deep groove ball bearing 23 and the snap ring 24 improves the connection stability between the main shaft 13 and the second sensor flange 20, reduces the shaking and friction of the main shaft 13 during the rotation process, and improves the service life of the electric screwdriver.

[0072] In this embodiment, the electric screwdriver with a compression and torque sensor further includes a mounting plate 25 and an electrostatic brush 26; the mounting plate 25 is connected to the second sensor flange 20; the electrostatic brush 26 is arranged on the mounting plate 25, and the electrostatic brush 26 is located on the side of the spindle 13, and the electrostatic brush 26 is used to eliminate the static electricity of the spindle 13. The design of the electrostatic brush 26 can effectively eliminate the static electricity generated by the spindle 13 during the rotation process, avoiding the safety hazards and performance degradation caused by the accumulation of static electricity.

[0073] Furthermore, the mounting plate 25 is connected to the outer side of the second sensor flange 20, and the second sensor flange 20 is provided with a second receiving groove 201 and a first through hole 202, the second receiving groove 201 is connected to the first through hole 202, wherein the mounting plate 25 is located in the second receiving groove 201, the outer side of the mounting plate 25 matches the outer side structure of the second sensor flange 20, and the electrostatic brush 26 passes through the first through hole 202 and extends to the inside of the second sensor flange 20. The design of the second receiving groove 201 and the first through hole 202 enables the mounting plate 25 and the electrostatic brush 26 to be more stably mounted on the second sensor flange 20, and does not occupy the additional use space of the electric screwdriver, thereby improving the overall structural safety and compactness of the product.

[0074] The structure of the housing 11 in this embodiment is described as follows:

[0075] Combination Figure 1 and Figure 2In this embodiment, the housing 11 includes a main housing 111, a front cover 112 and a connector 113; the main housing 111 is a hollow cylindrical structure, an opening is provided at the bottom of the main housing 111, and the rotating motor 12 is located in the main housing 111; the front cover 112 is located below the main housing 111, and the front cover 112 is used to close the opening, and the second sensor body 15 is connected to the front cover 112; the connector 113 connects the main housing 111 to the front cover 112. The design of the housing 11 provides stable protection and support for the electric screwdriver, and facilitates the installation and maintenance of the internal components. The design of the main housing 111, the front cover 112 and the connector 113 enables the housing 11 to fix the internal components more stably, thereby improving the overall structural strength and durability of the product.

[0076] Working principle of the present invention:

[0077] 1. The user starts the electric screwdriver, and the rotary motor 12 starts to work. The rotating part 121 at the bottom of the rotary motor 12 drives the driving shaft 122 to rotate.

[0078] The drive shaft 122 is connected to the main shaft 13 through the slot 132, driving the main shaft 13 to rotate. The screwdriver bit 16 at the other end of the main shaft 13 rotates accordingly, ready for tightening or loosening operations.

[0079] 2. Torque and pressure monitoring.

[0080] When the bit 16 contacts the screw and applies force, the first sensor body 14 and the second sensor body 15 start to work.

[0081] A first strain device is disposed in the middle of the first sensor body 14 , and the first sensor body 14 monitors radial torque data generated by the main shaft 13 during the rotation process through the first strain device thereon.

[0082] The second sensor body 15 is provided with a second strain device, which monitors the force applied to the main shaft 13 in the vertical direction (downward pressure).

[0083] 3. The design of components such as the motor flange 123, the first sensor flange 17 and the anti-collision isolation ring 18 enhances the stability and safety of the internal structure of the electric screwdriver.

[0084] The anti-collision isolation ring 18 effectively prevents direct collision between the housing 11 and the first sensor flange 17, and protects the deformation plane of the sensor from being affected by horizontal forces.

[0085] Fourth, the arrangement of the elastic member 19 and the second sensor body 15 enables the electric screwdriver to prevent accidental contact when not in use, thereby improving the safety during the use of the electric screwdriver.

[0086] 5. Static electricity elimination.

[0087] The provision of the electrostatic brush 26 helps to eliminate static electricity on the spindle 13 and prevent operational problems caused by electrostatic interference.

[0088] This completes the working process of the electric screwdriver with pressure-torsion sensor of the preferred embodiment.

[0089] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An electric screwdriver with a compression and torque sensor, characterized in that: include: shell; A rotating motor is arranged in the housing, a rotating part is arranged at the bottom end of the rotating motor, and a driving shaft is arranged on the rotating part; A spindle is disposed in the housing, one end of the spindle is connected to the drive shaft, and the other end of the spindle is provided with a bit; and A first sensor body, a hollow cylindrical structure, wherein the first sensor body is sleeved on the outer ring of the main shaft, the top of the first sensor body is connected to the rotating part, the outer side of the bottom of the first sensor body is connected to the housing, and a first strain device is arranged in the middle of the first sensor body, and the first strain device is used to collect radial torque data; as well as The second sensor body is a circular ring structure. The second sensor body is sleeved on the outer ring of the main shaft. The second sensor body is connected to the housing. The second sensor body is connected to the main shaft. The second sensor is provided with a second strain device. The second strain device is used to collect downward pressure and radial torque data.

2. The electric screwdriver with a compression and twist sensor according to claim 1, characterized in that: Also includes: A motor flange is sleeved on the outer ring of the driving shaft, and the top end of the motor flange is connected to the rotating part; a first sensor flange, wherein the first sensor flange is connected to the motor flange, and an inner ring of the first sensor flange is engaged with an outer ring of the first sensor body; and The anti-collision isolation ring is located between the housing and the first sensor flange, and the anti-collision isolation ring is sleeved on the outer ring of the first sensor flange.

3. The electric screwdriver with a compression and twist sensor according to claim 1, characterized in that: Also includes: An elastic member is disposed between the driving shaft and the main shaft, and the elastic member elastically presses the main shaft away from the driving shaft.

4. The electric screwdriver with a compression and twist sensor according to claim 3, characterized in that: A first limit plate is arranged on the outer side of the main shaft; the electric screwdriver with a compression and torsion sensor also includes: a second sensor flange, wherein the top of the inner circle of the second sensor flange is connected to the bottom of the first sensor body, the outer side of the bottom of the second sensor is connected to the housing, and the second sensor body is located in the second sensor flange; and A plane bearing is sleeved on the outside of the main shaft, and the plane bearing is arranged between the first limiting piece and the second sensor body.

5. The electric screwdriver with a compression and twist sensor according to claim 4, characterized in that: The first sensor body comprises: A first connecting portion, located at the top of the first sensor body, the first connecting portion being connected to the first sensor flange; A second connection portion, located at the bottom end of the first sensor body, the second connection portion being connected to a second sensor flange; and The deformation part is located in the middle of the first sensor body, and the cross-sectional diameter of the deformation part is smaller than the cross-sectional diameter of the first connecting part and the cross-sectional diameter of the second connecting part. The outer side of the deformation part is connected to the first strain device.

6. The electric screwdriver with a compression and twist sensor according to claim 1, characterized in that: It also includes a second limiting piece, which is arranged in the second sensor flange and located between the first sensor body and the second sensor body, and the second limiting piece defines the position of the second sensor body.

7. The electric screwdriver with a compression and twist sensor according to claim 5, characterized in that: The outer circle cross-section of the first connecting portion has a polygonal structure, and the inner circle cross-section structure of the first sensor flange matches the outer circle cross-section of the first connecting portion.

8. The electric screwdriver with a compression and twist sensor according to claim 4, characterized in that: Also includes: A deep groove ball bearing is sleeved on the main shaft, the inner ring of the deep groove ball bearing is connected to the bottom end of the first limit plate, and the outer side of the deep groove ball bearing is connected to the second sensor flange; as well as A snap ring is arranged in the second sensor flange, the snap ring is located at the bottom end of the outer ring of the deep groove ball bearing, and the snap ring is used to limit the position of the deep groove ball bearing.

9. The electric screwdriver with a compression and twist sensor according to claim 1, characterized in that: Also includes: A mounting plate connected to the second sensor flange; as well as An electrostatic brush is arranged on the mounting plate and located on the side of the main shaft, and the electrostatic brush is used to eliminate static electricity of the main shaft.

10. The electric screwdriver with a compression and torque sensor according to claim 1, characterized in that: The housing comprises: A main housing is a hollow cylindrical structure, an opening is provided at the bottom end of the main housing, and the rotating motor is located inside the main housing; and a front cover, located below the main housing, the front cover being used to close the opening, the second sensor body being connected to the front cover; and A connecting piece connects the main shell and the front cover.

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