Electric torque wrench with air cooling heat dissipation structure

Abstract

The utility model discloses an electric torque wrench with an air cooling heat dissipation structure, which belongs to the field of electric torque wrenches and comprises a wrench main body, a handle is connected onto the wrench main body, a detachable battery is arranged at the lower end of the handle, and a wrench end is arranged on the wrench main body. By means of the arranged air-cooling heat dissipation structure, heat in the wrench body is discharged in an air-cooling heat dissipation mode, the heat dissipation effect of the wrench body can be improved, a fixing plate and a fixing ring are installed and connected through a two-way connecting rod, disassembly and assembly of an air draft assembly are facilitated, a connecting shaft with a connecting groove is arranged in the air draft assembly, and therefore the heat dissipation effect of the wrench body is improved. The connecting shaft is directly connected with one of the two-way shafts on the motor, heat dissipation can be conducted without an additional driving source, synchronous starting and stopping of the electric torque wrench are achieved, an air inlet dustproof structure is arranged on the wrench body, dust can be efficiently prevented while normal air inlet is guaranteed, and the cleanliness of the interior of the wrench body is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric torque wrench field, especially a kind of electric torque wrench with air cooling heat dissipation structure. BACKGROUND

[0002] Electric torque wrench is a kind of electric tool for accurately applying torque to tighten bolt, is widely used in machinery, building, electric power, automobile assembly and other fields.It becomes important tool in modern industrial production by the characteristics such as accurate control torque, efficient operation, energy saving and environmental protection and safety.

[0003] The existing electric torque wrench when in use, the motor in the inside of wrench main body runs with end head and connector rotation, utilizes connector to transmit force to bolt, realizes the purpose of tightening bolt.However, in the motor operation process, a large amount of heat is generated, heat is only dissipated through the heat dissipation hole in the tail of wrench main body, and the heat dissipation effect is poor, if not pause using and dissipating heat after long time use, the temperature in the inside of wrench main body will be increased to affect the normal use of motor, and in serious case, it can cause the damage of motor, and then increase the use cost of electric torque wrench. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of electric torque wrench with air cooling heat dissipation structure, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of electric torque wrench with air cooling heat dissipation structure, including wrench main body, the handle is connected on the wrench main body, and the lower end of handle is provided with detachable battery, the wrench end head is provided on the wrench main body, and the connector is arranged on the wrench end head, the tail end of the wrench main body is provided with air cooling heat dissipation structure, and the air inlet dustproof structure is arranged on the wrench main body.

[0007] Preferably, the inside of the wrench main body is provided with motor, and the motor is connected with air cooling heat dissipation structure.

[0008] Preferably, the connector is fixedly installed on the connecting rod arranged on the wrench end head.

[0009] Preferably, the switch is arranged on the handle close to the position of wrench main body, and the adjusting knob is arranged on the handle.

[0010] Preferably, the air-cooled heat dissipation structure comprises a fixed plate, a protective frame, a fixed ring, a mounting seat, a bearing, an air extraction assembly and a bidirectional connecting rod, the fixed plate is fixed with the protective frame, the fixed ring is connected with the fixed plate through the bidirectional connecting rod, the mounting seat is mounted on the fixed ring, the mounting seat is provided with a sink, the bearing is mounted in the sink, and the air extraction assembly is penetrated and mounted on the bearing on the mounting seat.

[0011] Preferably, the fixed plate and the fixed ring are provided with connecting screw holes, the two ends of the bidirectional connecting rod are symmetrically provided with studs, and the bidirectional connecting rod is fixedly connected with the fixed plate and the fixed ring through the studs.

[0012] Preferably, the air extraction assembly comprises a rotating block, a fan blade, a connecting shaft and a connecting groove, the fan blades are arranged in an annular array on the rotating block, the rotating block is fixedly connected with the connecting shaft, and the connecting groove is formed in the tail end of the connecting shaft.

[0013] Preferably, the air inlet dustproof structure comprises an air inlet hole, a mounting frame and a dustproof net, the air inlet hole is formed in the wrench main body, the mounting frame is fixedly connected with the dustproof net, and the mounting frame is fixed at the air inlet hole of the wrench main body through screws.

[0014] Compared with the prior art, the electric torque wrench with the air-cooled heat dissipation structure has the following beneficial effects: the air-cooled heat dissipation structure is arranged, heat in the wrench main body is discharged in the mode of air-cooled heat dissipation, the heat dissipation effect of the wrench main body is improved, the wrench main body can be used for a long time without pausing heat dissipation, and the service life of the electric torque wrench is prolonged; the fixed plate and the fixed ring are mounted and connected through the bidirectional connecting rod, the air extraction assembly can be disassembled conveniently and quickly, operation convenience is high, the connecting shaft provided with the connecting groove is arranged in the air extraction assembly, the connecting shaft is directly connected with one of the bidirectional shafts on the motor, heat dissipation can be realized without an additional driving source, synchronous starting and stopping with the electric torque wrench is realized, the air inlet dustproof structure is arranged on the wrench main body, efficient dust prevention is realized while normal air intake is ensured, the cleanliness inside the wrench main body is ensured, and the air inlet dustproof structure is installed through screws, and quick disassembly and assembly are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a structure schematic view of the air-cooled heat radiator of the utility model;

[0017] Figure 3 It is a structure schematic view of the air extraction assembly of the utility model;

[0018] Figure 4 It is a structure schematic view of the air inlet dustproof structure of the utility model.

[0019] In the diagram: 1. Wrench body; 2. Handle; 3. Removable battery; 4. Wrench end; 5. Connector; 6. Air-cooled heat dissipation structure; 601. Fixing plate; 602. Protective frame; 603. Fixing ring; 604. Mounting base; 605. Bearing; 606. Exhaust assembly; 6061. Rotating block; 6062. Fan blade; 6063. Connecting shaft; 6064. Connecting groove; 607. Two-way connecting rod; 7. Air intake and dustproof structure; 701. Air intake hole; 702. Mounting bracket; 703. Dustproof net; 8. Switch; 9. Adjustment knob. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-4 As shown, an electric torque wrench with a wind-cooling structure includes a wrench body 1, a handle 2 connected to the wrench body 1, and a removable battery 3 at the lower end of the handle 2. The removable battery 3 makes the electric torque wrench more convenient and flexible to use. The wrench body 1 has a wrench end 4 with a connector 5. A wind-cooling structure 6 is located at the tail end of the wrench body 1, and an air intake and dustproof structure 7 is also provided. A motor is installed inside the wrench body 1 and is connected to the wind-cooling structure 6. The wind-cooling structure 6 can cool the wrench body 1, improving heat dissipation and ensuring the electric torque wrench can be used for a long time without damage.

[0022] A connecting rod is provided on the end 4 of the wrench, and the connector 5 is fixedly installed on the connecting rod. A switch 8 is provided on the handle 2 near the wrench body 1, and an adjustment knob 9 is provided on the handle 2. The adjustment knob 9 is used to adjust the torque, and the handle is highly adaptable.

[0023] When using the electric torque wrench, the removable battery 3 is installed at the lower end of the handle 2. After holding the wrench, the connector 5 is connected to the bolt of the corresponding size. The operator starts the wrench by using the switch 8 on the handle 2. The motor inside the wrench body 1 runs, and the connector 5 on the wrench end 4 rotates with the movement of the motor, thereby achieving the purpose of tightening the bolt. During the tightening process, the motor drives the heat dissipation part in the air-cooled heat dissipation structure 6 to run synchronously, which can expel the hot air inside the wrench body 1. At the same time, cooler outside air enters the wrench body 1 through the air intake dustproof structure 7, achieving the effect of air cooling.

[0024] The heat inside the wrench body 1 is discharged by the air cooling heat dissipation mode, which can improve the heat dissipation effect of the wrench body 1, so that the wrench body 1 can be used for a long time without pausing heat dissipation, thereby prolonging the service life of the electric torque wrench. The air inlet dustproof structure 7 is arranged on the wrench body 1, which can effectively prevent dust while ensuring normal air intake, thereby ensuring the cleanliness inside the wrench body 1. The air inlet dustproof structure 7 is installed by screws, which is convenient for quick disassembly and assembly.

[0025] Through the above embodiment, the air cooling heat dissipation structure 6 includes a fixed plate 601, a protective frame 602, a fixed ring 603, a mounting seat 604, a bearing 605, an air suction assembly 606 and a bidirectional connecting rod 607. The fixed plate 601 is fixed with the protective frame 602, the fixed ring 603 is connected with the fixed plate 601 through the bidirectional connecting rod 607, the mounting seat 604 is installed on the fixed ring 603, and the mounting seat 604 is provided with a sink, the bearing 605 is installed in the sink, and the air suction assembly 606 is installed on the bearing 605 on the mounting seat 604. The fixed plate 601 and the fixed ring 603 are provided with connecting screw holes, and the two ends of the bidirectional connecting rod 607 are symmetrically provided with studs, and the bidirectional connecting rod 607 is fixedly connected with the fixed plate 601 and the fixed ring 603 through the studs.

[0026] The air suction assembly 606 includes a rotating block 6061, a fan blade 6062, a connecting shaft 6063 and a connecting groove 6064. The fan blades 6062 are arranged in an annular array on the rotating block 6061, and the rotating block 6061 is fixedly connected with the connecting shaft 6063. The connecting groove 6064 is formed at the end of the connecting shaft 6063.

[0027] Through the above embodiment, the air inlet dustproof structure 7 includes an air inlet hole 701, a mounting frame 702 and a dustproof net 703. The air inlet hole 701 is formed on the wrench body 1, the mounting frame 702 is fixedly connected with the dustproof net 703, and the mounting frame 702 is fixedly arranged at the air inlet hole 701 on the wrench body 1 by screws.

[0028] In the assembly of the air-cooled heat dissipation structure 6, first, the connecting shaft 6063 in the air suction assembly 606 is arranged through the bearing 605 on the mounting seat 604, then the fixed ring 603 and the fixed plate 601 are installed together by using the stud on the bidirectional connecting rod 607 to match the corresponding connecting screw hole, and then the assembly of the whole air-cooled heat dissipation structure 6 is completed. During installation, the fixed plate 601 is installed to the tail end of the wrench main body 1 by using the bolt, and the fixed ring 603 and the air suction assembly 606 are located inside the wrench main body 1, and the connecting shaft 6063 is connected with one of the bidirectional shafts on the motor through the connecting groove 6064 and the spline. After the air-cooled heat dissipation structure 6 is installed, it is used. During the operation of the electric torque wrench, the motor rotates with the connector 5, and the connecting shaft 6063 in the air-cooled heat dissipation structure 6 rotates with the rotating block 6061 and the fan blade 6062, so that the air-cooled heat dissipation structure 6 and the electric torque wrench can be started and stopped synchronously. The rotating of the fan blade 6062 can discharge the hot air in the wrench main body 1, so as to achieve the purpose of cooling. During this process, the protection frame 602 plays a protection role.

[0029] When the electric torque wrench is operated, the air-cooled heat dissipation structure 6 is air-cooled and heat-dissipated, and after the hot air is discharged, the negative pressure is formed in the wrench main body 1. Under the action of the negative pressure, the air with low temperature outside enters through the air inlet hole 701, so as to realize the effect of cooling the internal structure of the wrench main body 1. During this process, the dust screen 703 on the mounting frame 702 plays a dustproof role, which can prevent dust from entering the wrench main body 1, and at the same time does not affect the air inlet, so as to ensure the cleanliness of the internal elements of the wrench main body 1.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An electric torque wrench with a wind-cooled heat dissipation structure, comprising a wrench body (1), a handle (2) connected to the wrench body (1), and a removable battery (3) provided at the lower end of the handle (2), a wrench end (4) provided on the wrench body (1), and a connector (5) provided on the wrench end (4), characterized in that: The wrench body (1) is provided with a wind-cooled heat dissipation structure (6) at the tail end, and an air intake and dust prevention structure (7) is provided on the wrench body (1).

2. The electric torque wrench with air-cooled heat dissipation structure according to claim 1, characterized in that: The wrench body (1) is equipped with a motor inside, and the motor is connected to the air-cooled heat dissipation structure (6).

3. An electric torque wrench with an air-cooled heat dissipation structure according to claim 2, characterized in that: A connecting rod is provided on the end of the wrench (4), and the connector (5) is fixedly installed on the connecting rod.

4. An electric torque wrench with an air-cooled heat dissipation structure according to claim 3, characterized in that: A switch (8) is provided on the handle (2) near the wrench body (1), and an adjustment knob (9) is provided on the handle (2).

5. An electric torque wrench with a wind-cooled heat dissipation structure according to claim 4, characterized in that: The air-cooled heat dissipation structure (6) includes a fixed plate (601), a protective frame (602), a fixing ring (603), a mounting base (604), a bearing (605), an exhaust assembly (606), and a bidirectional connecting rod (607). The fixed plate (601) is fixed together with the protective frame (602). The fixing ring (603) is connected to the fixed plate (601) through the bidirectional connecting rod (607). The mounting base (604) is mounted on the fixing ring (603), and the mounting base (604) is provided with a groove. The bearing (605) is installed in the groove. The exhaust assembly (606) is installed through the bearing (605) on the mounting base (604).

6. An electric torque wrench with an air-cooled heat dissipation structure according to claim 5, characterized in that: The fixing plate (601) and the fixing ring (603) are provided with connecting screw holes. The two ends of the bidirectional connecting rod (607) are symmetrically provided with studs, and the bidirectional connecting rod (607) is fixedly connected to the fixing plate (601) and the fixing ring (603) through the studs.

7. An electric torque wrench with an air-cooled heat dissipation structure according to claim 6, characterized in that: The exhaust assembly (606) includes a rotating block (6061), fan blades (6062), a connecting shaft (6063), and a connecting groove (6064). The fan blades (6062) are arranged in a ring array on the rotating block (6061), and the rotating block (6061) is fixedly connected to the connecting shaft (6063). The connecting groove (6064) is opened at the end of the connecting shaft (6063).

8. An electric torque wrench with a wind-cooled heat dissipation structure according to claim 7, characterized in that: The air intake and dustproof structure (7) includes an air intake hole (701), a mounting bracket (702) and a dustproof net (703). The air intake hole (701) is opened on the wrench body (1). The mounting bracket (702) is fixedly connected to the dustproof net (703), and the mounting bracket (702) is fixed to the air intake hole (701) on the wrench body (1) by screws.

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