Hand-held servo electric screwdriver with good heat dissipation effect

Abstract

The utility model relates to servo electric wrench technical field, concretely disclose a handheld servo electric wrench with good heat dissipation effect, including electric wrench body, be provided with rear end cover on the electric wrench body, the outside of rear end cover is equipped with the plastic shell, the upper end of plastic shell is installed in proper order navigation plug and upper cover, a plurality of first heat dissipation holes are opened on the rear end cover, first heat dissipation hole is communicated with the inside of electric wrench body, the inside of plastic shell is installed with first DC fan and second DC fan, the shell of plastic shell is opened a plurality of second heat dissipation holes, first DC fan and second DC fan are communicated with first heat dissipation hole and second heat dissipation hole respectively. The utility model discloses through opening first heat dissipation hole on the rear end cover and adding first DC fan and second DC fan to carry out active heat dissipation, can quickly send out the heat in electric wrench body through first heat dissipation hole and second heat dissipation hole, and the power consumption is little, and the noise is little, and the heat dissipation effect is good, can satisfy the long -term stable operation of big load.

Description

Technical Field

[0001] This utility model relates to the field of servo electric screwdriver technology, and in particular to a handheld servo electric screwdriver with good heat dissipation. Background Technology

[0002] Electric screwdrivers, also known as power screwdrivers or electric screwdrivers, are power tools used for tightening and loosening screws. They are primarily used on assembly lines and are essential tools for most manufacturing companies. Currently, there are two main types of handheld electric screwdrivers on the market: mechanical clutch electric screwdrivers and coreless motor electric screwdrivers. Mechanical clutch electric screwdrivers use a DC motor to drive the screwdriver bit mechanism, and the clutch force is adjustable to cut off the DC motor power supply, controlling the output torque of the screwdriver.

[0003] A search revealed that Chinese utility model patent CN202421331147.4 discloses a handheld servo electric screwdriver, comprising, from top to bottom, a screwdriver cap, a servo motor, a screwdriver handheld part, and a screwdriver chuck head. The screwdriver cap is equipped with a connector, a start / stop photoelectric control board, a start / stop switch, and a forward / reverse switch. The connector, servo motor, start / stop switch, and forward / reverse switch are all electrically connected to the start / stop photoelectric control board. The servo motor is driven by a drive shaft to the screwdriver chuck head spindle. A screwdriver chuck push-pull sleeve is located at the bottom of the screwdriver chuck head, and the bottom of the screwdriver chuck head spindle is located inside the push-pull sleeve. This utility model controls the start / stop and forward / reverse rotation of the servo motor by using the start / stop switch and the forward / reverse switch. The servo motor drives the screwdriver chuck head spindle to rotate and output torque, resulting in high torque, moderate speed, low heat generation, and no mechanical wear, thus leading to a long service life and low failure rate.

[0004] While the existing servo electric screwdrivers can meet basic usage requirements, they generally rely on aluminum alloy bodies for heat dissipation, resulting in low heat dissipation efficiency. Furthermore, when used handheld, the area in contact with the user's hand gets quite hot, making them inconvenient to use and even unsuitable for long-term high-load operation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a handheld servo electric screwdriver with good heat dissipation, which addresses the above-mentioned defects of the prior art. By providing a first heat dissipation hole on the rear cover and adding a first DC fan and a second DC fan for active heat dissipation, the heat inside the screwdriver body can be quickly dissipated through the first and second heat dissipation holes. It consumes less power, has low noise, and has good heat dissipation effect, which can meet the requirements of long-term stable operation under heavy load.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A handheld servo electric screwdriver with good heat dissipation includes a screwdriver body, a rear end cover, a plastic shell covering the outer side of the rear end cover, an aviation plug and a top cover sequentially installed on the upper end of the plastic shell, a plurality of first heat dissipation holes opening on the rear end cover, the first heat dissipation holes communicating with the interior of the screwdriver body, a first DC fan and a second DC fan installed on the inner side of the plastic shell, and a plurality of second heat dissipation holes opening on the outer shell of the plastic shell, the first DC fan and the second DC fan communicating with the first heat dissipation holes and the second heat dissipation holes respectively.

[0008] Preferably, the inner side of the plastic shell is provided with a fan slot adapted to the first DC fan and the second DC fan, and the first DC fan and the second DC fan are symmetrically arranged on the inner side of the plastic shell.

[0009] Preferably, the first heat dissipation holes are distributed sequentially along the circular edge on the rear end cover, and the second heat dissipation holes are distributed sequentially along the circular edge on the outer side of the plastic shell.

[0010] Preferably, the upper end of the connector extends out of the top cover, and the bottom of the connector is electrically connected to the first DC fan and the second DC fan respectively via a power cord.

[0011] Preferably, the electric screwdriver body includes a servo motor, a front cover, a handheld housing, and a front guide ring arranged sequentially from top to bottom. The servo motor has a reverse button, a start button, and a protective cover installed on its side. The servo motor has a drive shaft at its bottom, and an electric screwdriver chuck is installed at the bottom of the drive shaft.

[0012] Preferably, the servo motor is electrically connected to the reverse button and the start button, respectively, and the reverse button and the start button are electrically connected to the connector.

[0013] By adopting the above technical solution, the handheld servo electric screwdriver with good heat dissipation provided by this utility model has the following beneficial effects: The screwdriver body of the handheld servo electric screwdriver is provided with a rear end cover, and a plastic shell is fitted on the outside of the rear end cover. An aviation plug and a top cover are sequentially installed on the upper end of the plastic shell. Several first heat dissipation holes are opened on the rear end cover, and the first heat dissipation holes are connected to the interior of the screwdriver body. A first DC fan and a second DC fan are installed on the inside of the plastic shell, and several second heat dissipation holes are opened on the outer shell of the plastic shell. The first DC fan and the second DC fan are respectively connected to the first heat dissipation holes and the second heat dissipation holes. By providing active heat dissipation through the first heat dissipation holes on the rear end cover and the first DC fan and the second DC fan, the heat inside the screwdriver body can be quickly dissipated through the first heat dissipation holes and the second heat dissipation holes. It consumes less power, has less noise, can improve heat dissipation efficiency, has a good heat dissipation effect, is more convenient and safer to use, and can meet the requirements of long-term stable operation under heavy load. Attached Figure Description

[0014] Figure 1 This is an exploded view of the present invention;

[0015] Figure 2 This is a perspective view of the present utility model;

[0016] Figure 3 This is a longitudinal sectional view of the present invention;

[0017] In the diagram, 1-electric screwdriver body, 2-rear end cover, 3-plastic shell, 4-aviation plug, 5-top cover, 6-first heat dissipation hole, 7-first DC fan, 8-second DC fan, 9-second heat dissipation hole, 10-fan slot, 11-servo motor, 12-front end cover, 13-handheld shell, 14-front guide ring, 15-reverse button, 16-start button, 17-protective cover, 18-drive shaft, 19-electric screwdriver chuck. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] like Figure 1-3As shown, this handheld servo electric screwdriver with good heat dissipation includes a screwdriver body 1, a rear end cover 2, and a plastic shell 3 covering the outer side of the rear end cover 2. A connector 4 and a top cover 5 are sequentially installed on the upper end of the plastic shell 3. The rear end cover 2 has several first heat dissipation holes 6, which communicate with the interior of the screwdriver body 1. A first DC fan 7 and a second DC fan 8 are installed on the inner side of the plastic shell 3. The outer shell of the plastic shell 3 has several second heat dissipation holes 9, which are respectively connected to the first and second heat dissipation holes 7 and 9. It is understood that the first DC fan 7 and the second DC fan 8 can be common DC 1504 fans, etc.

[0022] Specifically, the inner side of the plastic shell 3 is provided with fan mounting slots 10 adapted to the first DC fan 7 and the second DC fan 8. The first DC fan 7 and the second DC fan 8 are symmetrically arranged on the inner side of the plastic shell 3. The first heat dissipation holes 6 are distributed sequentially along the circular edge on the rear end cover 2, and the second heat dissipation holes 9 are distributed sequentially along the circular edge on the outer side of the plastic shell 3. The upper end of the connector 4 protrudes from the upper cover 5, and the bottom of the connector 4 is connected to the first DC fan 7 and the second DC fan 8 respectively via power cords. Electrical connection; the electric screwdriver body 1 includes a servo motor 11, a front cover 12, a handheld housing 13 and a front guide ring 14 arranged sequentially from top to bottom. The side of the servo motor 11 is equipped with a reverse button 15, a start button 16 and a protective cover 17. The bottom of the servo motor 11 is provided with a drive shaft 18, and the bottom of the drive shaft 18 is equipped with an electric screwdriver chuck 19. The servo motor 11 is electrically connected to the reverse button 15 and the start button 16 respectively. The reverse button 15 and the start button 16 are electrically connected to the connector 4. Understandably, the reverse button 15 and the start button 16 can be connected to a universal electric screwdriver control circuit board. The electric screwdriver control circuit board is used to receive the trigger signals from the reverse button 15 and the start button 16 and output corresponding control signals to control the start, stop, forward and reverse rotation of the servo motor 11. The servo motor 11 can be a universal iron-core servo motor, etc. This utility model uses a universal iron-core servo motor structure to drive the drive shaft 18 and the electric screwdriver chuck 19 to rotate. The reverse button 15 and the start button 16 are located on both sides of the servo motor, and the wiring harness is connected to the electric screwdriver from above using an aviation plug.

[0023] Understandably, this utility model has a reasonable design and unique structure. It adopts an active cooling method with a fan. By opening a first heat dissipation hole 6 on the rear cover 2 and adding a first DC fan 7 and a second DC fan 8 for active cooling, the heat inside the electric screwdriver body 1 can be quickly dissipated through the first heat dissipation hole 7 and the second heat dissipation hole 9. It consumes less power, has less noise, can improve heat dissipation efficiency, has a good heat dissipation effect, and is more convenient and safe to use. It can meet the requirements of long-term stable operation under heavy load.

[0024] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A handheld servo electric screwdriver with good heat dissipation, comprising a screwdriver body, a rear end cover on the screwdriver body, a plastic shell sleeved on the outer side of the rear end cover, and an aviation plug and a top cover sequentially mounted on the upper end of the plastic shell, characterized in that: The rear end cover has several first heat dissipation holes, which are connected to the interior of the electric screwdriver body. A first DC fan and a second DC fan are installed on the inner side of the plastic shell. The outer shell of the plastic shell has several second heat dissipation holes, and the first DC fan and the second DC fan are respectively connected to the first heat dissipation holes and the second heat dissipation holes.

2. The handheld servo electric screwdriver with good heat dissipation according to claim 1, characterized in that: The inner side of the plastic shell is provided with fan slots that are compatible with the first DC fan and the second DC fan. The first DC fan and the second DC fan are symmetrically arranged on the inner side of the plastic shell.

3. The handheld servo electric screwdriver with good heat dissipation according to claim 1, characterized in that: The first heat dissipation holes are distributed sequentially along the circular edge on the rear end cover, and the second heat dissipation holes are distributed sequentially along the circular edge on the outer side of the plastic shell.

4. The handheld servo electric screwdriver with good heat dissipation according to claim 1, characterized in that: The upper end of the connector extends out of the top cover, and the bottom of the connector is electrically connected to the first DC fan and the second DC fan respectively via power cords.

5. The handheld servo electric screwdriver with good heat dissipation according to claim 1, characterized in that: The electric screwdriver body includes a servo motor, a front cover, a handheld housing, and a front guide ring arranged sequentially from top to bottom. The servo motor has a reverse button, a start button, and a protective cover installed on its side. The servo motor has a drive shaft at its bottom, and an electric screwdriver chuck is installed at the bottom of the drive shaft.

6. The handheld servo electric screwdriver with good heat dissipation according to claim 5, characterized in that: The servo motor is electrically connected to the reverse button and the start button, respectively, and the reverse button and the start button are electrically connected to the connector.

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