Electric screwdriver with lateral anti-interference structure

Abstract

The utility model provides an electric screwdriver with a lateral anti-interference structure. The electric screwdriver with the lateral anti-interference structure comprises a shell, a sensor body, a connecting flange and a steel ring. According to the lateral anti-interference structure of the sensor, the steel ring contacted with the shell is arranged on the peripheral side of the connecting flange, and the steel ring can rotate relative to the upper plane of the sensor body, so that the arrangement of the steel ring does not influence the measurement of a deformation plane on torsion. By introducing the structure of the connecting flange and the steel ring, the influence of external interference on the sensor body can be effectively prevented. The steel ring is located between the top end of the sensor body and the rotating part to form a physical barrier, so that external interferents are prevented from entering the area of the sensor body, the stability and accuracy of the sensor body are improved, the deformation plane of the sensor body can be protected from being influenced by horizontal force, and the detection accuracy of the sensor body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric screwdrivers, in particular to an electric screwdriver with a lateral anti-interference structure. Background Art

[0002] An electric screwdriver, also known as an electric screwdriver or electric screwdriver, is an electric tool used to tighten and loosen screws and nuts. It is an indispensable tool in the assembly industry.

[0003] In the existing electric screw structure, the area between the connection between the sensor and the motor and the shell is suspended, and the shell is only connected to the lower part of the sensor body. In this way, when the lower part of the sensor body is subjected to horizontal force, the force will directly act on the deformation plane of the sensor, causing the deformation plane to deform, thereby affecting the detection of the sensor.

[0004] Therefore, it is necessary to provide an electric screwdriver with a lateral anti-interference structure to solve the above technical problems. Utility Model Content

[0005] The utility model provides an electric screwdriver with a lateral anti-interference structure to solve the problem in the prior art that a housing is only connected to the lower part of a sensor body, and the sensor is deformed by an external force, resulting in deformation of the deformation plane, thereby affecting the detection accuracy of the sensor.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: an electric screwdriver with a lateral anti-interference structure, which includes:

[0007] A housing having a motor disposed therein, wherein the motor includes a rotating portion located at a bottom end;

[0008] A sensor body, the top end of which is connected to the rotating part, and the bottom end of which is fixedly connected to the housing; and

[0009] A connecting flange connects the rotating part to the sensor body;

[0010] The steel ring is located between the top of the sensor body and the rotating part, and the steel ring is sleeved on the outer ring of the connecting flange, and the outer wall of the steel ring is in contact with the inner wall of the shell.

[0011] The electric screwdriver with a lateral anti-interference structure of the utility model also includes a steel shaft, which is vertically arranged between the inner wall of the steel ring and the outer side of the connecting flange, and the axial extension direction of the steel shaft is parallel to the straight line where the extension direction of the connecting flange is located.

[0012] In the utility model, a first groove is arranged on the outer side of the connecting flange, the steel shaft is received in the first groove, and one side of the outer surface of the steel shaft is in contact with the inner wall of the steel ring.

[0013] The electric screwdriver with a lateral anti-interference structure of the utility model further comprises a steel sheet, wherein the steel sheet is arranged between the top end of the connecting flange and the rotating part, and the bottom surface of the steel sheet defines the position of the top surface of the steel shaft.

[0014] In the utility model, the steel sheet and the connecting flange are connected by screws.

[0015] In the utility model, a plug-in slot is provided at the top of the sensor body;

[0016] The connecting flange comprises:

[0017] A first fixing portion, plugged into the plug slot, the first fixing portion being connected to the sensor body; and

[0018] The second fixing part is located above the sensor body, and the second fixing part is connected to the rotating part.

[0019] In the present invention, the second fixing part is connected to the rotating part by a first screw.

[0020] The top of the sensor body is also provided with a first avoidance groove, and the first avoidance groove is used to accommodate the first screw.

[0021] In the utility model, the first fixing portion is provided with a second avoidance groove, and the second avoidance groove is spliced ​​with the first avoidance groove, so as to clamp the first screw.

[0022] In the utility model, the steel shafts are arranged in a plurality of groups, and the plurality of steel shafts are distributed around the connecting flange.

[0023] In the utility model, the rotating part is provided with a positioning protrusion, the top end of the connecting flange is provided with a third avoidance groove, and the positioning protrusion is plugged into the third avoidance groove.

[0024] Compared with the prior art, the utility model has the following beneficial effects: in the electric screwdriver with lateral anti-interference structure of the utility model, a steel ring in contact with the outer shell is arranged on the peripheral side of the connecting flange, and the steel ring can rotate relative to the upper plane of the sensor body, so the arrangement of the steel ring will not affect the measurement of torque by the deformation plane. By introducing the structure of the connecting flange and the steel ring, the influence of external interference on the sensor body can be effectively prevented. The steel ring is located between the top of the sensor body and the rotating part, forming a physical barrier to prevent external interference from entering the sensor body area, thereby improving the stability and accuracy of the sensor body. When the lower part of the sensor body receives a horizontal force, the force will first act on the outer shell through the steel ring. If the hardness of the outer shell is large, the deformation plane of the sensor body can be protected from being affected by the horizontal force, thereby ensuring the accuracy of the sensor body detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model 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 utility model.

[0026] Figure 1 It is a longitudinal cross-sectional view of the overall structure of an electric screwdriver according to a preferred embodiment of the present utility model.

[0027] Figure 2 This is an exploded view of the internal structure of an electric screwdriver according to a preferred embodiment of the present utility model.

[0028] Figure 3 It is a structural schematic diagram of the sensor body and the connecting flange of the preferred embodiment of the utility model.

[0029] Figure 4 It is a transverse cross-sectional view of the overall structure of an electric screwdriver according to a preferred embodiment of the utility model.

[0030] Figure numerals: 11, housing; 12, motor; 121, rotating part; 1211, driving shaft; 13, main shaft; 14, screw bit; 15, sensor body; 1511, plug-in slot; 1512, first avoidance slot; 16, connecting flange; 161, first fixing part; 1611, second avoidance slot; 162, second fixing part; 1622, first groove; 1623, second screw; 1624, first screw; 17, steel shaft; 18, steel ring; 19, steel sheet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0033] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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.

[0035] The following is a preferred embodiment of an electric screwdriver with a lateral anti-interference structure provided by the utility model to solve the above technical problems.

[0036] Please refer to Figure 1 and Figure 2 ,in Figure 1 A longitudinal cross-sectional view of the overall structure of an electric screwdriver according to a preferred embodiment of the present utility model; Figure 2 This is an exploded view of the internal structure of an electric screwdriver according to a preferred embodiment of the present utility model.

[0037] In the figures, structurally similar elements are denoted by the same reference numerals.

[0038] The utility model provides an electric screwdriver with a lateral anti-interference structure, the electric screwdriver comprising a shell 11, a motor 12, a spindle 13, a screwdriver bit 14, a sensor body 15, a connecting flange 16 and a steel ring 18; wherein the motor 12 is arranged inside the shell 11, and the motor 12 comprises a rotating part 121 located at the bottom end; the rotating part 121 is provided with a driving shaft 1211, and the top end of the spindle 13 is connected to the driving shaft 1211; the top end of the spindle 13 is connected to the rotating part 121, and the screwdriver bit 14 is arranged at the bottom end of the spindle 13.

[0039] The sensor body 15 is a cylindrical structure, and the sensor body 15 is sleeved on the outer ring of the main shaft 13; the top of the sensor body 15 is connected to the rotating part 121, and the bottom of the sensor body 15 is fixedly connected to the housing 11; the connecting flange 16 connects the rotating part 121 to the sensor body 15; the connecting flange 16 connects the rotating part 121 to the sensor body 15, ensuring their firmness and tightness. The fixed connection between the bottom end of the sensor body 15 and the housing 11 further enhances the stability of the entire structure and avoids loose connection or displacement. The steel ring 18 is located between the top of the sensor body 15 and the rotating part 121, and the steel ring 18 is sleeved on the outer ring of the connecting flange 16, and the outer wall of the steel ring 18 fits the inner wall of the housing 11.

[0040] The utility model sets a steel ring 18 in contact with the outer shell 11 on the circumferential side of the connecting flange 16. The steel ring 18 can rotate relative to the upper plane of the sensor body 15. Therefore, the setting of the steel ring 18 will not affect the measurement of torque by the deformation plane. By introducing the structure of the connecting flange 16 and the steel ring 18, the influence of external interference on the sensor body 15 can be effectively prevented. The steel ring 18 is located between the top of the sensor body 15 and the rotating part 121, forming a physical barrier to prevent external interference from entering the sensor body 15 area, thereby improving the stability and accuracy of the sensor body 15. When the lower part of the sensor body 15 is subjected to horizontal force, the force will first act on the outer shell 11 through the steel ring 18. If the hardness of the outer shell 11 is relatively large, the deformation plane of the sensor body 15 can be protected from being affected by the horizontal force, thereby ensuring the accuracy of the detection of the sensor body 15.

[0041] The electric screwdriver with the lateral anti-interference structure in this embodiment is described in detail as follows:

[0042] Combination Figure 2 , Figure 3 and Figure 4 The electric screwdriver with a lateral anti-interference structure in this embodiment also includes a steel shaft 17, which is vertically arranged between the inner wall of the steel ring 18 and the outer side of the connecting flange 16. The axial extension direction of the steel shaft 17 is parallel to the straight line where the extension direction of the connecting flange 16 is located. The steel shaft 17 ensures the rotation of the connecting flange 16 relative to the steel shaft 17, thereby improving the stability of the connecting flange 16 structure during the use of the electric screwdriver.

[0043] Furthermore, a first groove 1622 is provided on the outer side of the connecting flange 16, and the steel shaft 17 is received in the first groove 1622, thereby improving the stability of the connection between the connecting flange 16 and the steel shaft 17. One side of the outer surface of the steel shaft 17 is in contact with the inner wall of the steel ring 18, thereby ensuring the stable rotation of the steel shaft 17.

[0044] The rotating part 121 is provided with a positioning protrusion, and the top of the connecting flange 16 is provided with a third avoidance groove, and the positioning protrusion is plugged into the third avoidance groove. The electric screwdriver with a lateral anti-interference structure in this embodiment also includes a steel sheet 19, which is arranged between the top of the connecting flange 16 and the rotating part 121, and the bottom surface of the steel sheet 19 defines the position of the top surface of the steel shaft 17; the bottom end of the steel shaft 17 is supported by the top surface of the sensor body 15, and the top end of the steel shaft 17 is limited by the steel sheet 19 to prevent the steel shaft 17 from falling off. In addition, the steel sheet 19 in this embodiment is connected to the connecting flange 16 by a first screw 1624, which is convenient for disassembly and assembly.

[0045] In this embodiment, a plug-in slot 1511 is provided at the top of the sensor body 15; the connecting flange 16 includes a first fixing portion 161 and a second fixing portion 162; the first fixing portion 161 is plugged into the plug-in slot 1511, and the first fixing portion 161 and the sensor body 15 are easy to assemble. In this embodiment, the first fixing portion 161 and the top of the sensor body 15 are connected by a second screw 1623, which further improves the stability of the connection between the connecting flange 16 and the sensor body 15.

[0046] The second fixing portion 162 is located above the sensor body 15, and the second fixing portion 162 is connected to the rotating portion 121. In this embodiment, the second fixing portion 162 is connected to the rotating portion 121 by a first screw 1624, which is convenient for assembly of the structure; a first avoidance groove 1512 is also provided at the top of the sensor body 15, and the first avoidance groove 1512 is used to accommodate the screw, thereby improving the contact surface between the connecting flange 16 and the motor 12.

[0047] In addition, the first fixing portion 161 is provided with a second avoidance groove 1611 , and the second avoidance groove 1611 is spliced ​​with the first avoidance groove 1512 , so as to engage the first screw 1624 , thereby improving the stability of the connection between the sensor body 15 and the connecting flange 16 .

[0048] In this embodiment, several groups of steel shafts 17 are provided, and the several steel shafts 17 are distributed in a ring array around the connecting flange 16, thereby improving the stability of the electric screwdriver with a lateral anti-interference structure during the use of the electric screwdriver.

[0049] The working principle of this utility model:

[0050] 1. The user holds the housing 11 of the electric screwdriver and engages the screwdriver bit 14 at the bottom of the electric screwdriver with the screw to be removed or installed.

[0051] 2. Then start the electric screwdriver switch, and the motor 12 and the spindle 13 in the electric screwdriver are connected and driven inside the torque sensor structure 15, so that the screwdriver head 14 rotates to disassemble and assemble the screws.

[0052] The rotational force of the motor 12 is transmitted to the upper part of the sensor body 15 through the connecting flange 16 , so a torque is generated between the upper part of the sensor body 15 and the lower part of the sensor body 15 for detection.

[0053] A steel ring 18 in contact with the housing 11 is disposed on the peripheral side of the connecting flange 16 . The steel ring 18 can rotate relative to the upper plane of the sensor body 15 . Therefore, the provision of the steel ring 18 will not affect the measurement of torque by the deformation plane.

[0054] The utility model can effectively prevent the influence of external interference on the sensor body 15 by introducing the structure of the connecting flange 16 and the steel ring 18 .

[0055] 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 lateral anti-interference structure, characterized in that: include: shell; A motor is disposed in the housing, wherein the motor includes a rotating portion located at a bottom end; A main shaft, the top end of which is connected to the rotating part, and the bottom end of which extends out of the bottom end of the housing and is connected to a screwdriver bit; A sensor body is located in the housing, the sensor body is sleeved on the outer ring of the main shaft, and the bottom end of the sensor body is fixedly connected to the housing; A connecting flange connects the rotating part to the top end of the sensor body; and The steel ring is located between the top of the sensor body and the rotating part, and the steel ring is sleeved on the outer ring of the connecting flange, and the outer wall of the steel ring is in contact with the inner wall of the shell.

2. The electric screwdriver with lateral anti-interference structure according to claim 1, characterized in that: It also includes a steel shaft, which is vertically arranged between the inner wall of the steel ring and the outer side of the connecting flange, and the axial extension direction of the steel shaft is parallel to the straight line where the extension direction of the connecting flange is located.

3. The electric screwdriver with lateral anti-interference structure according to claim 2, characterized in that: A first groove is arranged on the outer side of the connecting flange, the steel shaft is received in the first groove, and one side of the outer surface of the steel shaft is in contact with the inner wall of the steel ring.

4. The electric screwdriver with lateral anti-interference structure according to claim 2, characterized in that: It also includes a steel sheet, which is arranged between the top end of the connecting flange and the rotating part, and the bottom surface of the steel sheet defines the position of the top surface of the steel shaft.

5. The electric screwdriver with lateral anti-interference structure according to claim 4, characterized in that: The steel sheet is connected to the connecting flange via screws.

6. The electric screwdriver with lateral anti-interference structure according to claim 1, characterized in that: The top of the sensor body is provided with a plug-in slot; The connecting flange comprises: A first fixing portion, plugged into the plug slot, the first fixing portion being connected to the sensor body; and The second fixing part is located above the sensor body, and the second fixing part is connected to the rotating part.

7. The electric screwdriver with lateral anti-interference structure according to claim 6, characterized in that: The second fixing part is connected to the rotating part by a first screw. The top of the sensor body is also provided with a first avoidance groove, and the first avoidance groove is used to accommodate the first screw.

8. The electric screwdriver with lateral anti-interference structure according to claim 7, characterized in that: The first fixing portion is provided with a second avoidance groove, and the second avoidance groove is spliced ​​with the first avoidance groove to clamp the first screw.

9. The electric screwdriver with lateral anti-interference structure according to claim 2, characterized in that: The steel shafts are arranged in a plurality of groups, and the plurality of steel shafts are distributed around the connecting flange.

10. The electric screwdriver with lateral anti-interference structure according to claim 2, characterized in that: The rotating part is provided with a positioning protrusion, the top end of the connecting flange is provided with a third avoidance groove, and the positioning protrusion is plugged into the third avoidance groove.

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