CN216229103U

CN216229103U - Electric screwdriver

Info

Publication number: CN216229103U
Application number: CN202121909174.1U
Authority: CN
Inventors: 方志; 方星娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-04-08
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses an electric screwdriver, which comprises a shell, wherein a driving mechanism is arranged in the shell, a transmission rod of the driving mechanism is connected with a working mechanism, the working mechanism comprises a rack, a screw box and a tool bit box are arranged on the rack, and the front end of the rack is connected with a chuck; the screw box can be used for placing screws to be used in advance before work, the screws are automatically fed through the screw box during work, frequent manual screw feeding is not needed, and the screw box is safe to use and high in work efficiency.

Description

Electric screwdriver

Technical Field

The utility model relates to the technical field of mechanical assembly, in particular to an electric screwdriver.

Background

The hand-held electric screwdriver drives the power device to rotate through the power supply, so as to drive the screwdriver head on the screwdriver head shell to rotate, and the screw is screwed or loosened, thus being one of the very practical tools in daily life. In the actual working process, often can touch the screw of many different models in same working process, this needs to pair different screwdriver heads, however present hand-held type electric screwdriver all is that one wholesale head or several fixed wholesale heads of configuration on the skull, meet the screw of different specifications and need change different wholesale heads, so every hand-held type electric screwdriver all need carry the wholesale head of different grade type when using, it is not very convenient to carry and keep like this, and the wholesale head loses easily, especially change the wholesale head and need extracting tool, waste time, greatly reduced work efficiency.

In addition, when the screw is screwed, the screw needs to be held by hand, then the screwdriver is aligned with the tail part of the screw, and then the screw is screwed, and after one screw is screwed, other screws need to be manually taken out, so that the time for taking out one screw is wasted, and the danger exists in the screwing process.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an electric screwdriver to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electric screwdriver, includes the casing, installs actuating mechanism, its characterized in that in the casing: the output end of the driving mechanism is connected with a transmission rod, the front end of the shell is movably connected with a working mechanism, the driving mechanism drives the working mechanism through the transmission rod, the working mechanism comprises a rack and a frame, and the front end of the rack is connected with a chuck;

a tool bit box is arranged on the rack, a screw box with an automatic screw feeding function is arranged between the tool bit box and the chuck, the screw box comprises a channel, a plurality of spring assemblies are arranged on two sides of the channel, a spring pressing block is arranged at the top end of the channel, a plurality of screws are preset between the spring assemblies, and various types of screwdriver bits are arranged in the tool bit box and can be pulled to and fro relative to the screw box;

one end of the transmission rod is connected with the driving mechanism, the other end of the transmission rod contacts the tool bit box, and the transmission rod drives the tool bit box to be internally provided with a screw, the tool bit contacts a screw in the screw box and is screwed through the chuck.

Preferably, a tool bit box jack and a screw box jack are arranged on the machine frame, the tool bit box is inserted into the tool bit box jack, and the screw box is inserted into the screw box jack.

Preferably, the tool bit box comprises a box body, handles are arranged at two ends of the box body, and placing holes for placing screwdriver bits of different models are arranged on two sides of the box body in a penetrating mode.

Preferably, the chuck is movably connected with the front end of the frame.

Preferably, one side of the bottom end of the chuck is provided with an inclined block, and the tip part of the inclined block faces the screw box.

Preferably, the top end of the rack is provided with an upper pull rod penetrating through the inner cavity and connected with the part, located in the inner cavity of the rack, of the tool bit box, and the chuck is provided with a side pull rod.

Preferably, the bottom of the front end of the shell is provided with a supporting plate, the side wall of the front end of the shell is provided with a baffle, the rack is connected with the supporting plate in a sliding mode, and the baffle is in contact with the outer surface of the rack.

Preferably, the driving mechanism comprises a direct current motor and a power supply, a switch is connected between the direct current motor and the power supply, the output end of the direct current motor is connected with a transmission assembly, and the output end of the transmission assembly is connected with a transmission rod.

Compared with the prior art, the utility model has the beneficial effects that:

1. the tool bit box is adopted to pre-place tool bits with different types, the position of the tool bit box can be adjusted according to different screws during working, and the tool bit can be replaced, so that the tool bit replacing efficiency is high, and the applicability is strong;

2. the screw box can be used for placing screws to be used in advance before work, the screws are automatically fed through the screw box during work, frequent manual screw feeding is not needed, and the screw box is safe to use and high in work efficiency.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present invention;

FIG. 2 is a schematic structural diagram of the working mechanism of the present invention;

FIG. 3 is a schematic view of a tool bit magazine according to the present invention;

FIG. 4 is a schematic view of a screw box according to the present invention;

FIG. 5 is an exploded view of the working mechanism of the present invention;

FIG. 6 is a schematic view (in part) of the drive mechanism of the present invention;

fig. 7 is a side view of the present invention in one state.

In the figure: 1. a housing; 11. a support plate; 12. a baffle plate; 2. a drive mechanism; 21. a direct current motor; 22. A transmission assembly; 221. a deceleration unit; 2211. a driving wheel; 2212. an output wheel; 2213. a first driven wheel; 2214. a second driven wheel; 222. a speed change unit; 2221. a first straight gear; 2222. a second spur gear; 2223. a third spur gear; 2224. a fourth spur gear; 2225. a fifth spur gear; 2226. a sixth spur gear; 223. a commutation unit; 2231. a first reversing gear; 2232. a second reversing gear; 2233. A third reversing gear; 2234. a fourth reversing gear; 224. a shift lever; 225. a reversing pull rod; 23. a power source; 24. a switch; 3. a transmission rod; 4. a working mechanism; 41. a frame; 42. a screw box; 421. a channel; 422. a spring mechanism; 423. a spring pressing block; 43. a bit magazine; 431. a handle; 432. Placing holes; 433. a case body; 44. a chuck; 441. a sloping block; 45. a tool bit box jack; 46. a screw box jack; 47. an upper pull rod; 48. a side pull rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: an electric screwdriver comprises a shell 1, wherein a driving mechanism 2 is installed in the shell 1, the output end of the driving mechanism 2 is connected with a transmission rod 3, the front end of the shell 1 is movably connected with a working mechanism 4, the driving mechanism 2 drives the working mechanism 4 through the transmission rod 3, the working mechanism 4 comprises a rack 41 and a rack 41, and the front end of the rack 41 is connected with a chuck 44; a tool bit box 43 is arranged on the frame 41, a screw box 42 with an automatic screw feeding function is arranged between the tool bit box 43 and the chuck 44, the screw box 42 comprises a channel 421, a plurality of spring components 422 are arranged on two sides of the channel 421, a spring pressing block 423 is arranged on the top end of the channel, a plurality of screws are preset between the spring components 422, and the tool bit box 43 is internally provided with a plurality of types of screwdriver bits and can be pulled to and fro relative to the screw box 42; one end of the transmission rod 3 is connected with the driving mechanism 2, the other end of the transmission rod 3 is contacted with the tool bit box 43, and the transmission rod 3 drives the built-in screw of the tool bit box 43 to contact the screw in the screw box 42 and is screwed through the chuck 44.

Specifically, referring to fig. 2, a magazine insert hole 45 and a magazine insert hole 46 are formed in the frame 41, the magazine insert hole 45 is inserted into the magazine insert hole 45, the magazine insert hole 46 is inserted into the magazine insert hole 46, the magazine insert hole 45 is formed in a side end surface of the frame 41 and penetrates through the body of the frame 41, so that the magazine insert 43 enters from one end and extends out from the other end when inserted into the magazine insert hole 45, the magazine insert hole 46 is formed in a horizontal state during operation, the magazine insert hole 46 is formed in a bottom end surface of the frame 41, the magazine insert hole 46 is formed in a vertical state during operation when inserted into the magazine insert hole 46, and the magazine insert hole 46 is located at a front end of the magazine insert hole 45.

Specifically, referring to fig. 3, the tool bit box 43 includes a box body 433, handles 431 are disposed at two ends of the box body 433 for facilitating taking and placing, placing holes 432 for placing screwdriver bits of different models are disposed through two sides of the box body 433, and the placing holes 432 are used for placing tool bit models required during working in advance, such as tool bits of other shapes, such as a straight shape, a cross shape, an internal hexagon shape, and the like.

Specifically, referring to fig. 2 and 7, the chuck 44 is movably connected to the front end of the frame 41, and the chuck 44 can slide relative to the frame 41.

Specifically, referring to fig. 5, an inclined block 441 is disposed on one side of the bottom end of the chuck 44, a tip of the inclined block 441 faces the screw box 42, when the chuck 44 approaches the frame 41, the inclined block 441 is driven to move toward the screw box 42, the tip of the inclined block 441 extends into the bottom end of a screw carried by the screw box 42, so as to eject the screw, and the tip of the ejected screw is located in the chuck 44 and the screw part is aligned with the screw box 43.

Specifically, in fig. 1 and 2, an upper pull rod 47 penetrating through an inner cavity is arranged at the top end of the frame 41 and connected with a portion of the tool bit magazine 43 located in the inner cavity of the frame 41, the upper pull rod 47 pulls the tool bit magazine 43 to move towards a direction close to the transmission rod 3 or move away from the transmission rod 3, so that a cap portion of the transmission rod 3 connected with a tool bit drives the tool bit to rotate, a side pull rod 48 is arranged on the chuck 44, and the side pull rod 48 is used for pulling the chuck 44 to be close to or away from the frame 41.

Specifically, referring to fig. 1, a supporting plate 11 is disposed at the bottom of the front end of the housing 1, a baffle 12 is disposed on the side wall of the front end of the housing 1, the frame 41 is slidably connected to the supporting plate 11, and the baffle 12 contacts with the outer surface of the frame 41.

Specifically, referring to fig. 1 and 6, the driving mechanism 2 includes a dc motor 21 and a power supply 23, the power supply 23 is a rechargeable lithium battery, a switch 24 is connected between the dc motor 21 and the power supply 23, an output end of the dc motor 21 is connected to a transmission assembly 22, an output end of the transmission assembly 22 is connected to the transmission rod 3, and in addition, a status indicator lamp is further disposed on the casing 1 to indicate three statuses of the battery of the screwdriver respectively with three colors of red, yellow and green.

In this embodiment, the transmission assembly 22 includes a speed reduction unit 221, a speed changing unit 222 and a reversing unit 223, the speed reduction unit includes a driving wheel 2211 and an output wheel 2212, the driving wheel 2211 is engaged with a first driven wheel 2213, the output wheel 2212 is engaged with a second driven wheel 2214, and the output wheel 2212 is connected with the transmission rod 3.

The speed changing unit 222 includes a first spur gear 2221, a second spur gear 2222, a third spur gear 2223, a fourth spur gear 2224, a fifth spur gear 2225, and a sixth spur gear 2226, the first spur gear 2221, the second spur gear 2222, and the third spur gear 2223 are coaxial with the first driven gear 2213, the fourth spur gear 2224, the fifth spur gear 2225, and the sixth spur gear 2226 are coaxial, the root circle diameters of the first spur gear 2221, the second spur gear 2222, and the third spur gear 2223 are smaller than the root circle diameters of the fourth spur gear 2224, the fifth spur gear 2225, and the sixth spur gear 2226, the diameters of the root circles of the six spur gears are different from each other, a speed change pull rod 224 is arranged on a shaft where the first spur gear 2221, the second spur gear 2222 and the third spur gear 2223 are located, and the speed change pull rod 224 can control the first spur gear 2221, the second spur gear 2222 and the third spur gear 2223 to be meshed with each other in pairs with the fourth spur gear 2224, the fifth spur gear 2225 and the sixth spur gear 2226 respectively, so that speed change is achieved.

The reversing unit 223 comprises a first reversing gear 2231, a second reversing gear 2232, a third reversing gear 2233 and a fourth reversing gear 2234, the first reversing gear 2231 and the second reversing gear 2232 are coaxial with the second driven wheel 2214, the third reversing gear 2233, the fourth reversing gear 2234, the fourth spur gear 2224, the fifth spur gear 2225 and the sixth spur gear 2226 are coaxial, a reversing pull rod 225 is arranged on a shaft where the first reversing gear 2231 and the second reversing gear 2232 are located, and the reversing pull rod 225 can control the first reversing gear 2231 and the second reversing gear 2232 to be meshed with the third reversing gear 2233 or the fourth reversing gear 2234 respectively so as to achieve reversing.

The working principle is as follows: the screwdriver bit required to be used during working is arranged in the bit box 43 in advance, the screw is arranged in the screw box 42, the position of the bit box 43 is adjusted by holding the handle 432 with a hand, the bit required to be used is selected to be adjusted to the working position (namely, the position which is aligned with the transmission rod 3), the upper pull rod 47 is pulled, the bit box 43 moves towards the front end direction close to the shell 1, the transmission rod 3 props against the bit required to be used in the bit box 43, the bit extends out of the bit box 43, the side pull rod 48 is pulled, the chuck 44 moves towards the direction of the rack 41, the chuck 44 drives the inclined block 441 to push the screw out and then clamp the screw in the chuck 44, the side pull rod 48 is continuously pulled to enable the bit in the bit box 43 to be in contact with the screw in the screw box 42 and push the screw out forwards, the switch 24 is pressed to start the screwdriver, and the screw rotate together to drive the screw into the required position.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electric screwdriver, includes casing (1), install actuating mechanism (2) in casing (1), its characterized in that: the output end of the driving mechanism (2) is connected with a transmission rod (3), the front end of the shell (1) is movably connected with a working mechanism (4), the driving mechanism (2) drives the working mechanism (4) through the transmission rod (3), the working mechanism (4) comprises a rack (41), the rack (41), and the front end of the rack (41) is connected with a chuck (44);

a tool bit box (43) is arranged on the rack (41), a screw box (42) with an automatic screw feeding function is arranged between the tool bit box (43) and the chuck (44), the screw box (42) comprises a channel (421), a plurality of spring assemblies (422) are arranged on two sides of the channel (421), a spring pressing block (423) is arranged at the top end of the channel, a plurality of screws are preset between the spring assemblies (422), and the tool bit box (43) is internally provided with a plurality of types of screwdriver bits and can be pulled to and fro relative to the screw box (42);

one end of the transmission rod (3) is connected with the other end of the driving mechanism (2) and contacts with the screw head box (43), the transmission rod (3) drives the screw head arranged in the screw head box (43) to contact with the screw in the screw box (42) and the screw is screwed through the chuck (44).

2. The electric screwdriver according to claim 1, wherein: the screwdriver is characterized in that a screwdriver bit box jack (45) and a screw box jack (46) are arranged on the rack (41), the screwdriver bit box (43) is inserted into the screwdriver bit box jack (45), and the screw box (42) is inserted into the screw box jack (46).

3. The electric screwdriver according to claim 2, wherein: the screwdriver head box (43) comprises a box body (431), handles (432) are arranged at two ends of the box body (431), and placing holes (433) used for placing screwdriver heads of different models are formed in the two sides of the box body (431) in a penetrating mode.

4. The electric screwdriver according to claim 3, wherein: the chuck (44) is movably connected with the front end of the frame (41).

5. The electric screwdriver according to claim 4, wherein: one side of the bottom end of the chuck (44) is provided with an inclined block (441), and the tip part of the inclined block (441) faces the screw box (42).

6. The electric screwdriver according to claim 1, wherein: the top end of the rack (41) is provided with an upper pull rod (47) penetrating to the inner cavity and connected with the inner cavity part of the rack (41) where the cutter head box (43) is positioned, and the chuck (44) is provided with a side pull rod (48).

7. The electric screwdriver according to claim 1, wherein: the bottom of the front end of the shell (1) is provided with a supporting plate (11), the side wall of the front end of the shell (1) is provided with a baffle (12), the rack (41) is connected with the supporting plate (11) in a sliding mode, and the baffle (12) is in contact with the outer surface of the rack (41).

8. The electric screwdriver according to claim 1, wherein: actuating mechanism (2) include direct current motor (21) and power (23), direct current motor (21) with be connected with switch (24) between power (23), the output of direct current motor (21) is connected with drive assembly (22), drive rod (3) are connected to the output of drive assembly (22).