CN213381294U

CN213381294U - Electric screwdriver shell and electric screwdriver

Info

Publication number: CN213381294U
Application number: CN202021879319.3U
Authority: CN
Inventors: 陈会甫; 闵新林
Original assignee: Ningbo Hanpu Tools Co ltd
Current assignee: Ningbo Hanpu Tools Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-06-08
Anticipated expiration: 2030-09-01

Abstract

The utility model provides an electric screwdriver casing and electric screwdriver relates to electric tool technical field. An electric screwdriver housing comprising: a first housing; the second shell is detachably connected with the first shell; the first shell and the second shell enclose an installation cavity, and a handheld part is formed on the first shell and/or the second shell; the second shell is far away from first shell one end and has the installation end, the installation end is located the installation cavity tip, be equipped with a spacing recess on the installation end, just spacing recess with the installation cavity intercommunication. A limiting groove for accommodating the speed regulating mechanism is formed in the second shell, so that the speed regulating mechanism can only move within a preset range. The design through the casing makes the casing except can holding inner structure, has still undertaken spacing function, has simplified inner structure, makes overall structure compacter, and structural stability is higher.

Description

Electric screwdriver shell and electric screwdriver

Technical Field

The utility model belongs to the technical field of electric tool, a electric screwdriver casing and electric screwdriver is related to.

Background

The screwdriver is mainly used for screwing or unscrewing parts such as screws, bolts and the like. The existing screw drivers can be divided into manual screw drivers and electric screw drivers. Because of the time and labor consumption and low working efficiency of the manual screw driver, more and more people start to use the electric screw driver to replace the manual screw driver. The electric screwdriver is often provided with more mechanical parts, so that the occupied space is larger, the weight is heavier, and the convenience of operation is seriously influenced. If some mechanical parts are omitted to save space and reduce weight, the structural stability is liable to be poor. In the prior art, the housing often only serves to accommodate the internal structure, and therefore no structure is provided on the housing.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a casing have limit structure and then reduced occupation space and improved structural stability's screwdriver casing and electric screwdriver.

The purpose of the utility model can be realized by the following technical proposal: an electric screwdriver housing comprising:

a first housing;

the second shell is detachably connected with the first shell; the first shell and the second shell enclose an installation cavity, and a handheld part is formed on the first shell and/or the second shell; the second shell is far away from first shell one end and has the installation end, the installation end is located the installation cavity tip, be equipped with a spacing recess on the installation end, just spacing recess with the installation cavity intercommunication.

As a further improvement, the utility model also comprises a speed regulation switch, the speed regulation switch is circular ring-shaped, and the installation end is located to the cover.

As a further improvement, the utility model also comprises a first end cover, the first end cover can be dismantled with the installation end and be connected, the first end cover is located spacing recess side, the speed governing switch is in between first end cover and second casing.

As a further improvement of the utility model, the installation end has an edge the through-hole that the installation department axial was seted up.

As a further improvement, the second casing is provided with a third buckle boss, the first casing is provided with a third buckle groove, the third buckle boss is accommodated in the third buckle groove.

As a further improvement of the utility model, the utility model also comprises a connecting piece, wherein a first buckle boss and a second buckle boss are respectively arranged at two ends of the connecting piece; a first buckle groove is formed in the first shell, and a second buckle groove is formed in the second shell; the first snap boss is received in the first snap recess and the second snap boss is received in the second snap recess.

The utility model discloses still protect an electric screwdriver, include:

an electric screwdriver housing as described above;

the transmission mechanism is positioned in the mounting part, the rotating shaft is positioned in the transmission mechanism, and the rotating shaft can drive the transmission mechanism to rotate; the speed regulating mechanism is accommodated in the limiting groove, one end of the speed regulating mechanism is movably connected with the speed regulating switch, and the other end of the speed regulating mechanism is movably connected with the transmission mechanism.

As a further improvement of the utility model, the speed regulating mechanism comprises a first speed regulating plate, a second speed regulating plate and a speed regulating push rod; the first speed regulating plate is in concave-convex fit with the speed regulating switch; the second speed regulation plate is in sliding fit with the first speed regulation plate, one end of the speed regulation push rod is connected with the second speed regulation plate, and the other end of the speed regulation push rod is connected with the transmission mechanism.

As a further improvement, the last spacing ring that still is provided with of first speed governing board, the spacing ring cup joints the drive mechanism tip, be provided with on the second shell and be used for supporting the ring shape fin of first speed governing board.

Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least:

1. the utility model discloses offer the spacing recess that is used for holding speed adjusting mechanism in the second casing of electric screwdriver casing, make speed adjusting mechanism can only remove at the scope of predetermineeing. The design through the casing makes the casing except can holding inner structure, has still undertaken spacing function, has simplified inner structure, makes overall structure compacter, and structural stability is higher.

2. The utility model discloses electric screwdriver casing still includes the ring form speed governing switch, makes the speed governing switch become the partly of casing, carries out the speed governing through rotatory speed governing switch, has avoided pressing the maloperation that the driving lever leads to easily among the prior art, makes the switch safer.

3. The utility model discloses hold corresponding mechanical structure in the electric screwdriver casing installation cavity, only set up the through-hole in the installation cavity axial, make the pivot stretch out, consequently make overall structure compacter, structural stability is higher.

Drawings

The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of an electric screwdriver of the present invention.

Fig. 2 is an exploded view of the electric screwdriver of the present invention.

Fig. 3 is a schematic structural diagram of the second housing of the present invention.

Fig. 4 is a schematic structural diagram of another view angle of the second housing according to the present invention.

Fig. 5 is a schematic structural view of another view angle of the second housing according to the present invention.

Fig. 6 is a schematic structural diagram of the first housing of the present invention.

Fig. 7 is a schematic structural diagram of the connector of the present invention.

Fig. 8 is a schematic structural diagram of the speed regulation switch of the present invention.

Fig. 9 is a schematic structural view of the first speed adjusting plate of the present invention.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 9.

An electric screwdriver, as shown in fig. 1-6, comprising: the device comprises a shell, a transmission mechanism 440, a rotating shaft 210, a speed regulating mechanism, a power mechanism, a reversing mechanism and a power supply mechanism.

The shell comprises a first shell 110 and a second shell 120, and the second shell 120 is detachably connected with the first shell 110; the first housing 110 and the second housing 120 enclose a mounting cavity 150, and a handheld portion 160 is formed on the first housing 110 and/or the second housing 120; one end of the second housing 120, which is far away from the first housing 110, is provided with a mounting end 128, the mounting end 128 is located at the end of the mounting cavity 150, the mounting end 128 is provided with a limiting groove 121, and the limiting groove 121 is communicated with the mounting cavity 150.

Further, the speed regulating mechanism is accommodated in the limiting groove 121, and the limiting groove 121 enables the speed regulating mechanism to move only within a preset range. The design through the casing makes the casing except can holding inner structure, has also undertaken spacing function, has simplified inner structure.

Preferably, the mounting cavity 150 and the handle 160 are disposed approximately vertically, giving the power screwdriver a pistol-like shape. By nearly perpendicular is meant that the mounting cavity 150 forms an angle of between 90 and 120 with the axis of the hand grip 160. The arrangement is more in line with human engineering, so that an operator can hold the electric tool more comfortably and conveniently.

Further, the speed regulation switch 300 is also included, and the speed regulation switch 300 is annular and is sleeved at the end part of the second shell 120. The speed regulation switch 300 can rotate around a shaft, and the switching of the rotating speed mode is realized by rotating to different gears. A plurality of rotating speed modes can be set according to requirements so as to adapt to different use environments, and the problems of too few selection modes and single use environment in the prior art are solved

Further, a first end cap 130 is included, the first end cap 130 is detachably connected to the mounting end 128, and the speed regulating switch 300 is located between the first end cap 130 and the second housing 120. The first end cap 130 and the second housing 120 define the position of the speed switch 300 such that the speed switch 300 cannot move axially but only rotates axially. Meanwhile, the speed regulating switch 300 forms a part of the shell to form a hidden design, so that the appearance is more attractive. Compared with the shifting rod type design in the prior art, the operation is more accurate, and misoperation is avoided.

Further, the first end cap 130 at least partially forms a side of the limiting groove 121, that is, the first end cap 130 is located at a side of the limiting groove 121. The preset range of the speed regulating mechanism is completely determined, and the excessive adjustment of the speed regulating mechanism is avoided.

Further, the mounting end 128 has a through hole 122 opened along the axial direction of the mounting cavity 150. The installation cavity 150 accommodates a driving mechanism 440 therein, and the driving mechanism 440 has a rotating shaft 210, and the rotating shaft 210 extends through the through hole 122 and is connected with the tool holder 900. The gear train 440 is rotatable about the rotational axis 210, the gear train 440 having at least two rotational speed modes.

Further, the second housing 120 is snap-fit connected to the first housing 110. Specifically, the second housing 120 is provided with a third fastening boss 161, the first housing 110 is provided with a third fastening groove 162, and the third fastening boss 161 is accommodated in the third fastening groove 162. The two are more convenient to assemble and disassemble through the buckle connection.

Further, as shown in fig. 5 to 7, the connector further includes a connecting member 150, and a first fastening boss 151 and a second fastening boss 152 are respectively disposed at two ends of the connecting member 150; a first fastening groove 153 is formed in the first housing 110, and a second fastening groove 154 is formed in the second housing 120; the first catching projection 151 is received in the first catching groove 153, and the second catching projection 152 is received in the second catching groove 154. The first casing 110 and the second casing 120 are further fixed by the connecting member 150, and the multiple connection and fixation makes the structure of the electric screwdriver more stable, thereby avoiding the problem that the assembled casing is easy to crack in the prior art.

Further, the speed regulating mechanism comprises a first speed regulating plate 410, a second speed regulating plate 420 and a speed regulating push rod; the first speed regulating plate 410 is in concave-convex fit with the speed regulating switch 300; the second speed regulation plate 420 is in sliding fit with the first speed regulation plate 410, one end of the speed regulation push rod is connected with the second speed regulation plate 420, and the other end of the speed regulation push rod is connected with the transmission mechanism 440. Through the better transmission process of above-mentioned setting, guarantee the accuracy of regulation mode, improve user experience.

In this embodiment, as shown in fig. 8 and 9, a groove 301 is disposed inside the speed regulation switch 300, a protrusion 412 is disposed outside the first speed regulation plate 410, and the groove 301 and the protrusion 412 are in concave-convex fit, so that the first speed regulation plate 410 and the speed regulation switch 300 synchronously rotate around the rotating shaft 210.

Specifically, in this embodiment, a chute 411 is disposed on the first speed regulation plate 410, a boss is disposed on the second speed regulation plate 420, the boss is inserted into the chute 411, and when the first speed regulation plate 410 rotates around the shaft, the boss makes the second speed regulation plate 420 move axially under the restriction of the chute 411, so as to further make the speed regulation push rod drive transmission mechanism 440 move axially to realize the adjustment of the speed regulation mode.

Further, a limiting ring 413 is further arranged on the first speed regulation plate 410, the limiting ring 413 is sleeved at the end of the transmission mechanism 440, and a circular convex rib 123 used for abutting against the first speed regulation plate 410 is arranged on the second shell 120. By further limiting the above structure, the first speed regulation plate 410 can only rotate around the rotation shaft 210. The arrangement of multiple limiting structures on the second shell 120 optimizes the internal structure, reduces the occupied space, and makes the overall structure more compact.

The power mechanism is accommodated in the installation cavity 150, and the power mechanism is connected with the transmission mechanism 440. Preferably, the power mechanism is a motor 510.

The power supply mechanism is accommodated in the handheld portion 160, and the power supply mechanism is connected to and disconnected from the power mechanism through a main switch 810. Preferably, the power supply mechanism is a lithium battery 610. In addition, a USB socket is further disposed on the handheld portion 160, so as to charge the lithium battery 610. The electric screwdriver can adopt a cordless design, so the application range is wider.

Further, the device also comprises a reversing mechanism, wherein the reversing mechanism comprises a reversing switch 710 and a reversing circuit board 720; the reversing switch 710 is electrically connected with the power mechanism through a reversing circuit board 720.

The housing further comprises a second end cap 140, and the first housing 110 and the second housing 120 are detachably connected to the second end cap 140 at the end of the handle 160.

Further, the tool post 900 is further included, the tool post 900 is coaxially arranged with the transmission mechanism 440, and the tool post 900 is arranged on one side of the transmission mechanism 440 far away from the power mechanism. Screws to be tightened or loosened may be placed in tool holder 900.

The transmission mechanism 440 and the power mechanism are sequentially accommodated in the mounting cavity 150, the power supply mechanism is accommodated in the handheld portion 160, and the main switch 810 is disposed on the handheld portion 160 and close to one side of the mounting cavity 150. The reversing circuit board 720 is arranged on the mounting cavity 150 near one side of the handheld portion 160, the reversing circuit board 720 is arranged in parallel with the rotating shaft 210, and the reversing switch 710 is arranged outside the mounting cavity 150 near the handheld portion 160.

After the main switch 810 is turned on, the operator can conveniently press the reversing switch 710 to reverse. When the rotating speed needs to be adjusted, an operator can hold the handheld electric screwdriver by one hand and rotate the speed adjusting switch 300 by the other hand to adjust the rotating speed.

The utility model discloses well electric screwdriver's theory of operation:

1. preparing, inserting a screw to be tightened or loosened into the tool holder 900;

2. turning on the main switch 810 to electrically connect the lithium battery 610 with the motor 510;

3. adjusting the reversing, pressing a reversing switch 710, selecting a proper steering direction, transmitting a reversing instruction to the motor 510 through a reversing circuit board 720, and driving the motor 510 to rotate forwards or backwards;

4. adjusting the rotating speed, rotating the speed adjusting switch 300, and adjusting the gear engagement of the transmission mechanism 440 through the speed adjusting mechanism to realize the adjustment of the rotating speed;

5. after the operation is completed, the main switch 810 is turned off.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An electric screwdriver housing, comprising:

a first housing;

2. The electric screwdriver shell as claimed in claim 1, further comprising a speed regulating switch, wherein the speed regulating switch is annular and is sleeved on the mounting end.

3. The electric screwdriver shell as claimed in claim 2, further comprising a first end cap, wherein the first end cap is detachably connected with the mounting end, the first end cap is located on the side of the limiting groove, and the speed regulating switch is located between the first end cap and the second shell.

4. The electric screwdriver shell as recited in claim 3, wherein said mounting end has a through hole formed axially along said mounting cavity.

5. The electric screwdriver shell as claimed in claim 1, wherein the second shell is provided with a third fastening boss, the first shell is provided with a third fastening groove, and the third fastening boss is accommodated in the third fastening groove.

6. The electric screwdriver shell as claimed in claim 1, further comprising a connecting piece, wherein a first fastening boss and a second fastening boss are respectively arranged at two ends of the connecting piece; a first buckle groove is formed in the first shell, and a second buckle groove is formed in the second shell; the first snap boss is received in the first snap recess and the second snap boss is received in the second snap recess.

7. An electric screwdriver, comprising:

an electric screwdriver housing as defined in claim 2;

the transmission mechanism is positioned in the installation cavity, the rotating shaft is positioned in the transmission mechanism, and the rotating shaft can drive the transmission mechanism to rotate; the speed regulating mechanism is accommodated in the limiting groove, one end of the speed regulating mechanism is movably connected with the speed regulating switch, and the other end of the speed regulating mechanism is movably connected with the transmission mechanism.

8. The electric screwdriver of claim 7, wherein the speed adjustment mechanism comprises a first speed adjustment plate, a second speed adjustment plate and a speed adjustment push rod; the first speed regulating plate is in concave-convex fit with the speed regulating switch; the second speed regulation plate is in sliding fit with the first speed regulation plate, one end of the speed regulation push rod is connected with the second speed regulation plate, and the other end of the speed regulation push rod is connected with the transmission mechanism.

9. The electric screwdriver as claimed in claim 8, wherein the first speed adjusting plate is further provided with a limiting ring, the limiting ring is sleeved on the end of the transmission mechanism, and the second casing is provided with a circular rib for abutting against the first speed adjusting plate.