Electric screwdriver

Abstract

The utility model relates to the technical field of screwdrivers, in particular to an electric screwdriver, which comprises a mounting seat, a driving part and a plurality of screwdrivers in driving connection with the driving part are mounted on the mounting seat, and the driving part drives the plurality of screwdrivers to rotate forward or backward simultaneously so as to screw or unscrew a screw. According to the electric screwdriver, a plurality of screws can be screwed or unscrewed at the same time, so that the assembly or disassembly speed of parts is increased, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screwdriver technology field, concretely relates to a kind of electric screwdriver. BACKGROUND

[0002] The existing screwdriver is single structure, it can only be tightened or loosened to one screw in same time, leading to the assembly or disassembly speed of component is slower, influence work efficiency. INVENTION CONTENTS

[0003] The utility model aims at providing a kind of electric screwdriver, to solve the technical problem existing above.

[0004] To achieve the above object, the technical scheme of the utility model is as follows: a kind of electric screwdriver, including mounting seat, drive piece and multiple screwdrivers drivenly connected with drive piece are installed on mounting seat, drive piece drives multiple screwdrivers to rotate simultaneously in positive direction or reverse direction to realize the tightening or loosening of screw.

[0005] Preferably, the screwdriver is 3, and it is first screwdriver, second screwdriver, third screwdriver respectively arranged side by side, second screwdriver is located between first screwdriver and third screwdriver, and the output shaft of drive piece is connected with first screwdriver and third screwdriver by first transmission assembly, and the output shaft of drive piece is connected with second screwdriver by second transmission assembly.

[0006] Preferably, it further includes first, second, third driving shafts coaxially connected with first screwdriver, second screwdriver, third screwdriver respectively, first transmission assembly is connected between the output shaft of drive piece and first driving shaft, third driving shaft, and second transmission assembly is connected between the output shaft of drive piece and second driving shaft.

[0007] Preferably, mounting seat includes 3 support tables and connecting rods, 3 support tables are sequentially arranged and connected by connecting rods in order from top to bottom, and the support table is sequentially first, second, third support table from top to bottom, first, second, third accommodation holes are formed in support table, first driving shaft is arranged in the first accommodation hole of first, second support table, second driving shaft is arranged in the second accommodation hole of first, second support table, third driving shaft is arranged in the third accommodation hole of first, second support table, first screwdriver is arranged in the first accommodation hole of third support table and rotates, second screwdriver is arranged in the second accommodation hole of third support table and rotates, and third screwdriver is arranged in the third accommodation hole of third support table and rotates.

[0008] Preferably, the first, second, third accommodation holes of first support table and second support table are equipped with bearings matched with first screwdriver, second screwdriver, third screwdriver respectively.

[0009] Preferably, the support table is provided with a driving accommodation hole, a transmission space is formed between the first support table and the second support table, the driving member is installed on the first support table, and an output shaft of the driving member extends downward into the transmission space through the driving accommodation hole of the first support table, and the second transmission assembly and the first transmission assembly are arranged in the transmission space in an up-down manner respectively.

[0010] Preferably, the first transmission assembly comprises three first transmission wheels and a first synchronous belt sleeved on the three first transmission wheels, the three first transmission wheels are respectively installed on the output shaft of the driving member, the first driving shaft and the third driving shaft, the first tensioning mechanism is fixedly installed on the second support table, the first limiting hole is formed in the first tensioning mechanism, and the first synchronous belt is arranged in the first limiting hole.

[0011] Preferably, the second transmission assembly comprises two second transmission wheels and a second synchronous belt sleeved on the two second transmission wheels, the two second transmission wheels are respectively installed on the output shaft of the driving member and the second driving shaft, the second tensioning mechanism is fixedly installed on the first support table, the second limiting hole is formed in the second tensioning mechanism, and the second synchronous belt is arranged in the second limiting hole.

[0012] Preferably, a buffer space is formed between the second support table and the third support table, the upper shaft coupler is installed on the outer part of the first driving shaft, the second driving shaft and the third driving shaft in the buffer space, the lower shaft coupler is installed on the outer part of the first screwdriver, the second screwdriver and the third screwdriver in the buffer space, the top ends of the first screwdriver, the second screwdriver and the third screwdriver are arranged in the upper shaft coupler of the first driving shaft, the second driving shaft and the third driving shaft in an up-down movable and telescopic manner respectively, and the elastic buffer member is installed between the upper shaft coupler and the lower shaft coupler.

[0013] Preferably, the housing is installed on the outer part of the mounting seat, and the heat dissipation member is installed on the top of the housing and located above the driving member.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a mounting seat, driving member and a plurality of screwdrivers are installed on the mounting seat and are drivenly connected with the driving member, the driving member drives a plurality of screwdrivers to rotate forward or reversely at the same time to realize screw tightening or loosening, so that the electric screwdriver can tighten or loosen a plurality of screws at the same time, thereby improving the assembly or disassembly speed of components and improving work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the bottom side view of the embodiment of the utility model.

[0017] Figure 2 It is the top side view of the embodiment of the utility model.

[0018] Figure 3 is a sectional view of an embodiment of the present application.

[0019] Figure 4 is a schematic diagram of the internal structure of an embodiment of the present application from one perspective.

[0020] Figure 5 is a schematic diagram of the internal structure of an embodiment of the present application from another perspective.

[0021] Figure 6 is a schematic diagram of the internal structure of an embodiment of the present application from another perspective.

[0022] Figure 7 is a schematic diagram of the structure of a support table of an embodiment of the present application.

[0023] FIG. 1 is a first screwdriver, 2 is a second screwdriver, 3 is a third screwdriver, 4 is a first support table, 5 is a second support table, 6 is a third support table, 7 is a shell, 8 is a heat dissipation piece, 9 is a driving piece, 10 is a connecting rod, 11 is an upper shaft coupling, 12 is a lower shaft coupling, 13 is a spring, 14 is a first clearance hole, 15 is a second clearance hole, 16 is a third clearance hole, 17 is a driving clearance hole, 18 is a bearing, 19 is a transmission space, 20 is a buffer space, 21 is a first tensioning rod, 22 is a first tensioning wheel, 23 is a second tensioning rod, 24 is a second tensioning wheel, 25 is a first transmission wheel, 26 is a first synchronous belt, 27 is a second transmission wheel, 28 is a second synchronous belt, 29 is a first driving shaft, 30 is a second driving shaft, and 31 is a third driving shaft. DETAILED DESCRIPTION

[0024] To further illustrate the embodiments, the present application provides accompanying drawings. These drawings are part of the disclosure of the present application, mainly used to illustrate the embodiments, and can be used to explain the operating principle of the embodiments in conjunction with the related description of the specification. With reference to these contents, those skilled in the art should be able to understand other possible embodiments and the advantages of the present application. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, it is to explain that, unless there is definite and limited, the term "connect", "connection" should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium。For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0027] Referring to Figures 1-7 As shown in the utility model, as an embodiment of the utility model, an electric screwdriver is provided, comprising a mounting seat, a driving member 9 and three screwdrivers drivenly connected with the driving member 9 are installed on the mounting seat, the driving member 9 drives the three screwdrivers to rotate in the same direction or in the opposite direction to tighten or loosen the screws, so that the electric screwdriver can tighten or loosen three screws at the same time, thereby improving the assembly or disassembly speed of the component and improving the work efficiency.

[0028] In the embodiment, the three screwdrivers are a first screwdriver 1, a second screwdriver 2 and a third screwdriver 3 arranged side by side, the second screwdriver 2 is located between the first screwdriver 1 and the third screwdriver 3, a first transmission assembly is connected between the output shaft of the driving member 9 and the first screwdriver 1 and the third screwdriver 3, and a second transmission assembly is connected between the output shaft of the driving member 9 and the second screwdriver 2, which makes the transmission effect more stable and reliable。Of course, in other cases, the screwdriver 5 can also be a plurality of other quantities, such as four, and the arrangement mode is not limited to side-by-side arrangement.

[0029] The distance between the adjacent two screwdrivers of the utility model can be less than 12mm, specifically, the distance between the adjacent two screwdrivers in the embodiment is 9.5mm, so as to adapt to the components with 9.5mm small pitch screws.

[0030] In the embodiment, the first, second and third driving shafts 31 are coaxially connected with the first, second and third screwdrivers 1, 2 and 3 respectively, the first transmission assembly is connected between the output shaft of the driving member 9 and the first and third driving shafts 29 and 31, the second transmission assembly is connected between the output shaft of the driving member 9 and the second driving shaft 30, the mounting base comprises three support tables and the connecting rod 10, the three support tables are sequentially and spacedly arranged on the connecting rod 10 from top to bottom, the three support tables are sequentially the first, second and third support tables 6 from top to bottom, the first, second and third accommodation holes 16 are formed in the support tables, the first driving shaft 29 is arranged in the first accommodation hole 14 of the first and second support tables 5, the second driving shaft 30 is arranged in the second accommodation hole 15 of the first and second support tables 5, and the third driving shaft 31 is arranged in the third accommodation hole 16 of the first and second support tables 5, the first screwdriver 1 is arranged in the first accommodation hole 14 of the third support table 6, the second screwdriver 2 is arranged in the second accommodation hole 15 of the third support table 6, and the third screwdriver 3 is arranged in the third accommodation hole 16 of the third support table 6, so that the perpendicularity of the first, second and third screwdrivers 1, 2 and 3 is better, and the inclination deviation of the screwdrivers during rotation is prevented.

[0031] In the embodiment, the first, second and third accommodation holes 16 of the first and second support tables 4 and 5 are provided with bearings 18 matched with the first, second and third screwdrivers 1, 2 and 3 respectively, so as to ensure the rotation accuracy and stability of the screwdrivers.

[0032] In the embodiment, the driving accommodation holes 17 are formed in the support tables, the transmission space 19 is formed between the first and second support tables 4 and 5, the driving member 9 is arranged on the first support table 4, the output shaft of the driving member 9 extends into the transmission space 19 through the driving accommodation hole 17 of the first support table 4, and the second transmission assembly and the first transmission assembly are arranged in the transmission space 19 from top to bottom, so as to avoid the interference between the second transmission assembly and the first transmission assembly and ensure the transmission stability.

[0033] In the embodiment, the first transmission assembly comprises three first transmission wheels 25 and a first synchronous belt 26 sleeved on the three first transmission wheels 25, the three first transmission wheels 25 are arranged on the output shaft of the driving member 9, the first driving shaft 29 and the third driving shaft 31 respectively, the first tensioning mechanism is fixedly arranged on the second support table 5, the first limiting hole is formed in the first tensioning mechanism, specifically, the first tensioning mechanism comprises the first tensioning rod 21 and the first tensioning wheel 22 fixedly connected to one end of the first tensioning rod 21, the first limiting hole is located in the first tensioning wheel 22, and the first synchronous belt 26 is arranged in the first limiting hole, so as to avoid the large amplitude shaking of the first synchronous belt 26 and further improve the transmission stability.

[0034] In the embodiment, the second transmission assembly comprises two second transmission wheels 27 and a second synchronous belt 28 sleeved on the two second transmission wheels 27, the two second transmission wheels 27 are respectively installed on the output shaft of the driving member 9 and a second driving shaft 30, the second supporting table 4 is fixedly provided with a second tensioning mechanism, a second limiting hole is formed in the second tensioning mechanism, specifically, the second tensioning mechanism comprises a second tensioning rod 23 and a second tensioning wheel 24 fixedly connected to one end of the second tensioning rod 23, the second limiting hole is located in the second tensioning wheel 24, and the second synchronous belt 28 is sleeved in the second limiting hole, so that the second synchronous belt 28 is prevented from shaking greatly, and the transmission stability is further improved.

[0035] In the embodiment, the second supporting table 5 and the third supporting table 6 form a buffer space 20, the first, second and third driving shafts 31 located in the buffer space 20 are externally provided with an upper shaft coupling 11, the first, second and third screwdrivers 3 located in the buffer space 20 are externally provided with a lower shaft coupling 12, the top ends of the first, second and third screwdrivers 3 are correspondingly arranged in the upper shaft coupling 11 of the first, second and third driving shafts 31 in an up-down movable and telescopic mode, the bottom end of the upper shaft coupling 11 is provided with a sliding groove hole, and opposite sides of the top end of the screwdriver are provided with flat surfaces, so that the top end of the screwdriver can be arranged in the sliding groove hole in a rotation-preventing mode, the force transmission effect is better, and the stability is higher, and the upper shaft coupling 11 and the lower shaft coupling 12 are provided with an elastic buffer member, specifically a spring 13, the spring 13 always has a pre-tightening force for driving the screwdriver downward, the arrangement enables the screwdriver to have a certain up-down elastic movement space, so that the screwdriver can be re-embedded in the screw to realize alignment when the screwdriver slips, and the working accuracy and stability of the screw tightening or loosening process are ensured.

[0036] In the embodiment, the housing 7 is further installed on the outside of the mounting seat, the supporting table of the mounting seat is disc-shaped, the housing 7 is cylindrical, the housing 7 is provided with a heat dissipation member 8, specifically a fan, on the top, and the heat dissipation member 8 is located above the motor, so that the motor is cooled, and the service life is prolonged.

[0037] Although the utility model is specifically shown and introduced in combination with the preferred embodiment, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all fall within the protection scope of the utility model.

Claims

1. A power screwdriver characterized by: The installation seat is provided with a driving member and a plurality of screwdrivers driven by the driving member, and the driving member drives the plurality of screwdrivers to rotate in the same direction or in the opposite direction to tighten or loosen the screws.

2. The electric screwdriver according to claim 1, characterized in that: The screwdrivers are three, namely a first screwdriver, a second screwdriver and a third screwdriver arranged side by side, and the second screwdriver is located between the first screwdriver and the third screwdriver. The output shaft of the driving member is connected with the first screwdriver and the third screwdriver through a first transmission assembly, and the output shaft of the driving member is connected with the second screwdriver through a second transmission assembly.

3. The electric screwdriver according to claim 2, characterized in that: The installation seat is provided with a driving member and a plurality of screwdrivers driven by the driving member, and the driving member drives the plurality of screwdrivers to rotate in the same direction or in the opposite direction to tighten or loosen the screws.

4. The electric screwdriver according to claim 3, characterized in that: The installation seat includes three support tables and a connecting rod. The three support tables are sequentially and spacedly arranged in an up-down direction through the connecting rod. The three support tables are sequentially arranged from top to bottom as a first support table, a second support table and a third support table. First, second and third accommodation holes are formed in the support tables. The first and second support tables are provided with the first accommodation hole and the second accommodation hole, and the third support table is provided with the third accommodation hole. The first and second accommodation holes of the first and second support tables are provided with bearings corresponding to the first screwdriver, the second screwdriver and the third screwdriver.

5. The electric screwdriver according to claim 4, characterized in that: The first and second support tables are provided with the first, second and third accommodation holes, and the first, second and third accommodation holes of the first and second support tables are provided with bearings corresponding to the first screwdriver, the second screwdriver and the third screwdriver.

6. The electric screwdriver according to claim 4, characterized in that: The support tables are provided with driving accommodation holes, and a transmission space is formed between the first support table and the second support table. The driving member is installed on the first support table, and the output shaft of the driving member extends downward into the transmission space through the driving accommodation hole of the first support table. The second transmission assembly and the first transmission assembly are arranged in the transmission space in an up-down direction.

7. The electric screwdriver according to claim 4, characterized in that: The first transmission assembly includes three first transmission wheels and a first synchronous belt sleeved on the three first transmission wheels. The three first transmission wheels are installed on the output shaft of the driving member, the first driving shaft and the third driving shaft. The first support table is fixedly provided with a first tensioning mechanism, and the first tensioning mechanism is provided with a first limiting hole. The first synchronous belt is arranged in the first limiting hole.

8. The electric screwdriver according to claim 4, characterized in that: The second transmission assembly includes two second transmission wheels and a second synchronous belt sleeved on the two second transmission wheels. The two second transmission wheels are installed on the output shaft of the driving member and the second driving shaft. The first support table is fixedly provided with a second tensioning mechanism, and the second tensioning mechanism is provided with a second limiting hole. The second synchronous belt is arranged in the second limiting hole.

9. The electric screwdriver according to claim 4, characterized in that: The buffer space is formed between the second support table and the third support table, the upper shaft coupler is externally mounted on the first, second and third driving shafts in the buffer space, the lower shaft coupler is externally mounted on the first, second and third screwdrivers in the buffer space, the top ends of the first, second and third screwdrivers are correspondingly arranged in the upper shaft couplers of the first, second and third driving shafts in an up-down movable telescopic mode, and the elastic buffer is mounted between the upper shaft coupler and the lower shaft coupler.

10. The electric screwdriver according to claim 1, characterized in that: The housing is mounted on the outside of the mounting seat, the heat dissipation member is mounted on the top of the housing, and the heat dissipation member is located above the driving member.

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