Electric torque wrench

Abstract

The utility model discloses an electric torque wrench which comprises a shell assembly, the shell assembly mainly comprises a shell A, a containing bin is arranged on the rear portion of the bottom wall of the shell A, a shell B used in cooperation with the containing bin is arranged on the rear portion of the bottom end of the shell A, and the shell B is fixedly connected to the shell A through screws. A connector assembly is arranged on the front portion of the inner wall of the shell A, the connector assembly is used for being externally connected with different torque wrenches and comprises a connector B rotationally connected to the front portion of the inner wall of the shell A, a connector A is arranged on the inner wall of the connector B, and a motor gearbox assembly is arranged in the shell A; and an external wrench is driven by the motor gear box assembly. The driving head has the advantages that the connector assembly is arranged, and the problem that the driving head is inconvenient to disassemble in the traditional design is solved through the flexible design of the connector assembly; a motor gear box assembly is arranged, so that the rotating speed of the connecting shaft can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of torque wrench, specifically point to a kind of electric torque wrench. BACKGROUND

[0002] As a kind of efficient, accurate fastening tool, electric torque wrench is widely used in automobile manufacturing, mechanical assembly, aerospace and other fields. With the improvement of industrial automation, the requirement of torque control precision is also higher and higher. Electric torque wrench is driven by motor, realizes the accurate control and output of torque, greatly improves production efficiency, reduces manual labor intensity, meets the demand of modern industrial production for high efficiency, high precision and high reliability.

[0003] Chinese patent CN216098648U discloses an electric torque wrench, relating to the technical field of torque wrench, comprising a main body device, a first ring and a second ring, the inside of the main body device is provided with the second ring, the outer wall of the second ring is fixedly connected with the second leg, the left end outer wall of the second ring is movably connected with the first ring, the outer wall of the first ring is fixedly connected with the first leg, and the left end of the first leg is fixedly connected with the anti-skid bottom block. The utility model has the advantages of the following: the driving head can be connected without being offset by the force generated by the user holding the electric torque wrench, which solves the problem that the driving head is easy to be offset during use, causing the screw to be subjected to excessive torque and the nut to fail due to fatigue, and enables the torque wrench to be quickly assembled and disassembled. However, there are still defects that can be improved:

[0004] 1. In the utility model, the driving head is arranged on the receiving rod to twist the bolt, but it should be noted that the driving head is connected to the receiving rod, which is not convenient to disassemble. Therefore, when rotating different bolts, a lot of time is spent on replacing the driving head, which not only wastes time but also limits the use of the equipment to some extent.

[0005] 2. In the utility model, the driving assembly directly pushes the driving head to rotate. It should be noted that the driving assembly usually has high speed. If it is directly connected to the driving head and connecting rod, the driving head may fly out due to high speed, and the output speed of the use scheme becomes difficult to control.

[0006] The information disclosed in this background section is intended only to enhance understanding of the overall background of the present utility model, and should not be construed as recognition or implicit admission in any form that this information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0007] The utility model wants to solve the technical problem of overcoming above -mentioned problem, provide a kind of electric torque wrench.

[0008] To solve the above technical problems, the utility model provides a technical scheme, which is an electric torque wrench, characterized by comprising:

[0009] The shell assembly mainly comprises a shell A, a containing bin is arranged at the rear of the bottom wall of the shell A, a shell B used in cooperation with the containing bin is arranged at the rear of the bottom end of the shell A, and the shell B is fixedly connected to the shell A by screws.

[0010] The joint assembly is arranged on the inner wall of the shell A, and is used to connect different torque wrenches.

[0011] The motor gear box assembly is arranged in the shell A, and drives the connected wrench through the motor gear box assembly.

[0012] As an improvement, the rear and middle part of the top end of the shell A are fixedly connected with a key plate and a display screen respectively, the front part of the top end of the shell A is fixedly connected with a PCB switch plate, the front part of the top end of the shell A is fixedly connected with a key gel particle used in cooperation with the PCB switch plate, and the middle part of the top wall of the shell A is fixedly connected with a PCB plate.

[0013] As an improvement, the motor gear box assembly comprises a linkage sleeve fixedly connected to the front part of the inner wall of the shell A, a motor is arranged at the rear of the linkage sleeve, the motor is fixedly connected to the inner wall of the linkage sleeve through a fixing seat, and an inner gear is fixedly connected to the inner wall of the linkage sleeve.

[0014] As an improvement, a motor gear is fixedly connected to the output shaft of the motor, a linkage plate is arranged at the front of the motor gear, a plurality of No. 5 gears I are rotatably connected to the rear end of the linkage plate, the plurality of No. 5 gears I are engaged with the motor gear, the plurality of No. 5 gears I are engaged with the inner gear, and the linkage plate is rotated by driving the plurality of No. 5 gears I to rotate through the motor gear.

[0015] As an improvement, a No. 6 gear is fixedly connected to the middle part of the front end of the linkage plate, a plurality of No. 5 gears II are engaged with the No. 6 gear, the plurality of No. 5 gears II are engaged with the inner gear, a linkage shaft is rotatably connected to the front end of the No. 5 gear II, and the linkage shaft is rotated by driving the No. 5 gear II to rotate through the No. 6 gear.

[0016] As an improvement, a plurality of fixing holes are formed on the joint A, a plurality of steel balls are arranged in the fixing holes, an annular fixing groove is formed on the inner wall of the joint B, and a steel ring is arranged in the fixing groove, the steel ring is used for pressing the plurality of steel balls, the steel balls are used for limiting and fixing the wrench, and the fixing sleeve is arranged on the outer periphery of the joint A and used for protecting and limiting the joint A.

[0017] As an improvement, the joint A and the joint B are connected by the pin.

[0018] As an improvement, the front end of the linkage shaft passes through the joint B and the joint A and is located in the joint A, and the front part of the outer wall of the linkage shaft is fixedly connected with the fourth gear.

[0019] As an improvement, the accommodating bin is provided with a battery.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] 1. In the electric torque wrench, the flexible joint assembly is designed, the problem of inconvenient disassembly of the driving head in the traditional design is solved, the user can quickly replace and adapt different bending machines, the convenience of operation is improved, and the use scene of the equipment is expanded. The fixing hole and the steel ball on the joint A and the annular fixing groove of the joint B ensure the stable fixation of the wrench, and the wrench can be quickly replaced.

[0022] 2. The motor gear box assembly is designed, the effective control of the output rotating speed is realized, the motor gear is meshed with the plurality of first and sixth gears, and the linkage shaft is arranged, a multi-stage speed reduction transmission system is formed, the rotating speed of the linkage shaft is effectively reduced, the risk of the bending machine is prevented, and the accuracy and safety of the torque output are improved. In addition, this design also makes the bending machine better adapt to different torque demand working environments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a perspective view of the electric torque wrench.

[0024] Figure 2 It is a structural view of the electric torque wrench.

[0025] Figure 3 It is a structural view of part of the electric torque wrench. Figure 1 .

[0026] Figure 4 It is a structural view of part of the electric torque wrench. Figure 2 .

[0027] Figure 5It is the utility model a kind of electric torque wrench at the enlarged view of A place.

[0028] Figure 6 It is the utility model a kind of electric torque wrench motor gear box assembly's perspective view.

[0029] Figure 7 It is the utility model a kind of electric torque wrench's explosion view.

[0030] As shown in the figure:

[0031] 1, housing assembly;101, housing A;102, housing B;

[0032] 2, joint assembly;201, joint B;202, joint A;203, fixed hole;204, steel ball;205, fixed groove;206, steel ring;207, pin;208, fixed sleeve;

[0033] 3, motor gear box assembly;301, linkage sleeve;302, motor;303, inner gear;304, motor gear;305, linkage plate;306, gear No. 1;307, gear No. 6;308, gear No. 5 two;309, linkage shaft;310, gear No. 4;

[0034] 4, key board;5, display screen;6, PCB switch board;

[0035] 7, key gel particles;8, PCB board. Specific implementation

[0036] The utility model makes further detailed explanation in combination with the drawings.

[0037] The working principle of the utility model as Figures 1-7 Shown, a kind of electric torque wrench, comprising: housing assembly 1, housing assembly 1 mainly includes housing A 101, the front end of housing A 101 is equipped with opening part, the rear of housing A 101 bottom wall is opened and is equipped with import part, the rear of housing A 101 bottom wall is provided with the containing bin used in cooperation with import part, containing bin is communicated with outside, battery is arranged in containing bin, in addition, the bottom end rear of housing A 101 is provided with the housing B 102 used in cooperation with containing bin, and housing B 102 is fixedly connected on housing A 101 by being equipped with several screws, and it is to be explained that, the screw hole filled with gel particles in containing screw, reduce the situation of screw drop-off;

[0038] Next, the middle of the top end of the shell A101 is fixedly connected with a display screen 5, the display screen 5 is electrically connected with the battery, the rear of the top end of the shell A101 is fixedly connected with a key pad 4, at the same time, the front of the top end of the shell A101 is fixedly connected with a key glue particle 7, the PCB switch board 6 is arranged in the key glue particle 7, the bottom end of the PCB switch board 6 is fixedly connected to the top end of the shell A101, the key glue particle 7 is used for reducing the abrasion of the PCB switch board 6, the middle of the top wall of the shell A101 is fixedly connected with a PCB board 8;

[0039] Then, the inner wall of the opening part of the shell A101 is provided with a joint assembly 2, and different sizes of bending machines can be externally connected through the joint assembly 2.

[0040] Finally, the front of the inner wall of the shell A101 is provided with a motor gear box assembly 3, and the joint assembly 2 and the externally connected bending machine are driven through the motor gear box assembly 3.

[0041] The above-mentioned various structures jointly constitute the general appearance structure of the electric torque wrench.

[0042] In order to further explain the specific working principle of the electric torque wrench, the joint assembly 2, the joint assembly 2 mainly comprises a joint B201 rotatably connected to the inner wall of the shell A101, and a ring-shaped fixed groove 205 is formed in the inner wall of the joint B201;

[0043] The inner wall of the joint B201 is provided with a joint A202, the joint A202 and the joint B201 are connected to each other through a plurality of pins 207, and a plurality of fixed holes 203 used in cooperation with the fixed groove 205 are formed in the outer wall of the joint A202, a steel ball 204 is arranged in each fixed hole 203, and a steel ring 206 is arranged in the fixed groove 205, the steel ring 206 and the plurality of steel balls 204 are used in cooperation, and the externally connected bending machine is fixed through the steel ball 204;

[0044] Next, a fixing sleeve 208 is sleeved on the front of the outer wall of the shell A101, the fixing sleeve 208 is used for protecting and limiting the joint A202 and the joint B201, and can also limit the joint A202.

[0045] The technical effects achieved by the technical scheme composed of the above technical features are that the joint A202 and the joint B201 are connected together through the plurality of pins 207, when the joint B201 rotates, the joint A202 rotates synchronously;

[0046] When the externally connected bending machine enters the joint A202, the steel ring 206 drives the plurality of steel balls 204 to tightly press on the corresponding grooves of the externally connected bending machine, so that the bending machine can be fixed, and thus the equipment can fix bending machines of different sizes

[0047] It is to be explained that, when the bending machine rotates, according to the principle of angular momentum conservation, most of the force on the bending machine comes from the circumferential force, not the axial force, so the fixing of the steel balls 204 in the groove can meet the stability of the equipment.

[0048] In order to further explain the specific working principle of the electric torque wrench, the motor gear box assembly 3 comprises a linkage sleeve 301 fixedly connected to the front inner wall of the shell A101, a through hole is formed in the front end of the linkage sleeve 301, and an internal gear 303 is fixedly connected to the inner wall of the linkage sleeve 301;

[0049] A linkage shaft 309 is rotatably connected in the through hole, the rear part of the linkage shaft 309 is located in the linkage sleeve 301, and a plurality of No. 5 gear two 308 are arranged on the rear end of the linkage shaft 309, the No. 5 gear two 308 is rotatably connected to the linkage shaft 309 through the arrangement of the rotating shaft, and then the No. 6 gear 307 is engaged between the plurality of No. 5 gear two 308, it is to be explained that the plurality of No. 5 gear two 308 are engaged with the internal gear 303;

[0050] At this point, when the No. 6 gear 307 rotates, the plurality of No. 5 gear two 308 engaged with it can drive the linkage shaft 309 to rotate;

[0051] Then, the No. 6 gear 307 is fixedly connected with the linkage plate 305, the rear end of the linkage plate 305 is rotatably connected with a plurality of No. 5 gear one 306, and the plurality of No. 5 gear one 306 is engaged with the internal gear 303, at this point, the plurality of No. 5 gear one 306 is engaged with the internal gear 303, and the plurality of No. 5 gear two 308 is engaged with the internal gear 303, so that the linkage plate 305 can stably operate;

[0052] Then, the motor 302 is arranged behind the plurality of No. 5 gear one 306, the motor 302 is fixedly connected to the inner wall of the linkage sleeve 301 through the arrangement of the fixing seat, and then the output shaft of the motor 302 is fixedly connected with the motor gear 304, the motor gear 304 is engaged with the plurality of No. 5 gear one 306;

[0053] At this point, the motor 302 can drive the linkage plate 305 to rotate through the engagement of the No. 5 gear one 306 and the motor gear 304, and the engagement of the No. 5 gear one 306 and the internal gear 303.

[0054] Then, the front end of the linkage shaft 309 penetrates through the through hole of the linkage sleeve 301 and is located in the joint A202, and the front part of the outer wall of the linkage shaft 309 is fixedly connected with the No. 4 gear 310, so that the linkage shaft 309 can drive the bending machine to rotate through the No. 4 gear 310.

[0055] The technical effects achieved by the technical features are as follows: the motor 302 drives the motor gear 304 to rotate, the No. 5 gear wheel I 306 engaged with the motor gear 304 rotates, and the linkage plate 305 is driven to rotate, so that the output rotation speed of the output shaft of the motor 302 is preliminarily reduced; then, the linkage plate 305 drives the No. 6 gear wheel 307 to rotate, and the No. 5 gear wheel II 308 engaged with the No. 6 gear wheel 307 drives the linkage shaft 309 to rotate, so that the output rotation speed of the output shaft of the motor 302 is further reduced, and the rotation speed of the linkage shaft 309 is stably controlled.

[0056] In use, according to actual conditions, the appropriate bending machine is selected, placed into the joint A 202, and the steel ball 204 is pressed on the bending machine through the steel ring 206, so that the bending machine is fixed, then the motor 302 is operated, the No. 5 gear wheel I 306 and the motor gear 304 are engaged, the linkage plate 305 is indirectly driven to rotate, then the No. 6 gear wheel 307 and the No. 5 gear wheel II 308 are engaged, the linkage shaft 309 is driven to rotate, and the linkage shaft 309 drives the bending machine to rotate through the No. 4 gear wheel 310.

[0057] The above describes the present application and its embodiments, which are not limited, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired by the above description, without departing from the spirit of the present application, similar structural modes and embodiments can be designed without creative design, which should belong to the protection scope of the present application.

[0058] In addition, the electrical elements in the text are all connected with the main controller and 220V mains, and the main controller can be a computer or other known devices that can be controlled, and the detailed description of known functions and known components is omitted in the specific embodiment of the present disclosure. In order to ensure the compatibility of the device, the operation means adopted is consistent with the parameters of the market appliances.

Claims

1. An electric torque wrench, characterized in that, include: The outer shell assembly (1) mainly includes an outer shell A (101), a receiving compartment is provided at the rear of the bottom wall of the outer shell A (101), and an outer shell B (102) is provided at the rear of the bottom end of the outer shell A (101) to cooperate with the receiving compartment. The outer shell B (102) is fixedly connected to the outer shell A (101) by screws. Connector assembly (2), the connector assembly (2) is disposed at the front of the inner wall of the outer shell A (101), the connector assembly (2) is used to connect different torque wrenches externally, the connector assembly (2) includes a connector B (201) rotatably connected to the front of the inner wall of the outer shell A (101), and a connector A (202) is disposed on the inner wall of the connector B (201); The motor gearbox assembly (3) is disposed inside the housing A (101) and drives an external wrench through the motor gearbox assembly (3).

2. The electric torque wrench according to claim 1, characterized in that: A keypad (4) and a display screen (5) are fixedly connected to the rear and middle parts of the top of the outer casing A (101), respectively. A PCB switch board (6) is fixedly connected to the front of the top of the outer casing A (101). Keypad glue particles (7) for use with the PCB switch board (6) are fixedly connected to the front of the top of the outer casing A (101). A PCB board (8) is fixedly connected to the middle of the top wall of the outer casing A (101).

3. An electric torque wrench according to claim 2, characterized in that: The motor gearbox assembly (3) includes a linkage sleeve (301) fixedly connected to the front of the inner wall of the outer casing A (101). A motor (302) is arranged behind the linkage sleeve (301). The motor (302) is fixedly connected to the inner wall of the linkage sleeve (301) by a fixed seat. An internal gear (303) is fixedly connected to the inner wall of the linkage sleeve (301).

4. An electric torque wrench according to claim 3, characterized in that: A motor gear (304) is fixedly connected to the output shaft of the motor (302). A connecting plate (305) is provided in front of the motor gear (304). A plurality of No. 5 gears (306) are rotatably connected to the rear end of the connecting plate (305). The plurality of No. 5 gears (306) mesh with the motor gear (304) and mesh with the internal gear (303). The motor gear (304) drives the plurality of No. 5 gears (306) to rotate, thereby causing the connecting plate (305) to rotate.

5. An electric torque wrench according to claim 4, characterized in that: A No. 6 gear (307) is fixedly connected to the middle of the front end of the connecting plate (305). Several No. 5 gears (308) are meshed on the No. 6 gear (307). The several No. 5 gears (308) are all meshed with the internal gear (303). The front end of the No. 5 gears (308) is rotatably connected to the connecting shaft (309). The No. 6 gear (307) drives the No. 5 gears (308) to rotate, so that the connecting shaft (309) rotates.

6. An electric torque wrench according to claim 1, characterized in that: The connector A (202) has several fixing holes (203), and each fixing hole (203) contains a steel ball (204). The inner wall of the connector B (201) has an annular fixing groove (205), and a steel ring (206) is placed in the fixing groove (205). The steel ring (206) presses the steel balls (204) together, so that the steel balls (204) limit and fix the wrench. The connector A (202) is fitted with a fixing sleeve (208) to protect and limit the connector A (202).

7. An electric torque wrench according to claim 6, characterized in that: The connectors A (202) and B (201) are connected to each other by means of a pin (207).

8. An electric torque wrench according to claim 5, characterized in that: The front end of the connecting shaft (309) passes through joint B (201) and joint A (202) and is located inside joint A (202). The front part of the outer wall of the connecting shaft (309) is fixedly connected to gear No. 4 (310).

9. An electric torque wrench according to claim 1, characterized in that: The compartment contains batteries.

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