CN211362044U

CN211362044U - Manual and automatic integrated screwdriver

Info

Publication number: CN211362044U
Application number: CN201921169122.8U
Authority: CN
Inventors: 刘勉群
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-08-28
Anticipated expiration: 2029-07-23

Abstract

The utility model provides a manual screwdriver with automatic integral type, including the casing with locate the motor in the casing, be equipped with manual switching mechanism between casing front end and the motor, manual switching mechanism includes output shaft, bearing frame, a plurality of round pin stick and driving plate. One end of the output shaft is arranged to be a prism structure, and the bearing seat is sleeved outside the output shaft and is fixedly connected with the shell. The pin rod is attached between the prism structure and the bearing seat and attached to the prism surface of the prism structure, and the diameter of the pin rod is equal to the maximum vertical distance from the inner wall of the bearing seat to the prism surface. The driving disc is arranged on a motor shaft of the motor and embedded into the bearing seat, a through hole is formed in the driving disc corresponding to the pin rod, and the pin rod is inserted into the through hole. The utility model can realize the manual-automatic integration function, can lock the output shaft and the shell when the power supply is lacked, can not drive the motor to rotate, and can prevent the motor from being damaged; the traditional one-way valve is cancelled, so that the volume of the screwdriver is reduced, and the screwdriver is convenient to carry, operate and use.

Description

Manual and automatic integrated screwdriver

Technical Field

The utility model relates to an electric tool technical field, concretely relates to manual and automatic integral type screwdriver.

Background

A power screwdriver is a power tool equipped with a mechanism for adjusting and limiting the torque for tightening and loosening screws. The electric tool is mainly used for assembly lines and is one of the necessary tools for most production enterprises. However, the conventional small electric screw driver can not be used manually under the condition of no electricity, and when the screw driver is used manually, the output shaft of the screw driver is in a movable and non-locking state.

The screwdriver is characterized in that a plurality of manual-automatic integrated screwdrivers are also involved in the prior art, a one-way valve is generally adopted for limiting to realize the manual-automatic integrated function, but the one-way valve is large in outer diameter, so that the screwdriver is large in overall size and outer diameter and inconvenient to carry and store.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a remedy exist not enough among the prior art, provide a manual and automatic integral type screwdriver, cancelled the check valve in the traditional design, had small in size, characteristics that transmission structure is simple reliable.

The utility model discloses a reach above-mentioned purpose, the technical scheme of adoption as follows:

the utility model provides a manual and automatic integral type screwdriver, includes the casing and locates motor in the casing, the casing front end with be equipped with manual switching mechanism between the motor, manual switching mechanism includes:

the output shaft is arranged between the front end of the shell and the motor, one end of the output shaft is provided with an inner hexagonal hole for inserting a screwdriver head, and the other end of the output shaft is arranged into a prism structure;

the bearing seat is sleeved outside the output shaft, the outer wall of the bearing seat is fixedly connected with the shell, and an extension platform for axially fixing the output shaft is arranged in the bearing seat;

the pin rods are arranged between the prism structure and the bearing seat, the periphery of each pin rod is attached to a prism surface of the prism structure, and the diameter of each pin rod is equal to the maximum vertical distance from the inner wall of the bearing seat to the prism surface of the prism structure;

the transmission disc is arranged on a motor shaft of the motor, a plurality of through holes are formed in the transmission disc corresponding to the pin rods, and one ends of the pin rods are inserted into the through holes.

Furthermore, the transmission disc is embedded in the bearing seat, a shaft hole connected with a motor shaft of the motor is formed in the transmission disc, a notch connected with the through hole is formed in the peripheral wall of the transmission disc, so that the pin rod can pass through the notch and be attached to the inner wall of the bearing seat, and the inner diameter of the through hole is equal to the diameter of the pin rod.

Further, a convex ring is arranged on the outer peripheral wall of the output shaft, which is close to the prism structure, and the outer diameter of the convex ring is between the minimum inner diameter and the maximum inner diameter of the bearing seat, so that the convex ring is abutted against the extension platform to axially fix the output shaft.

Further, be equipped with outer hexagonal bulge loop on the bearing frame periphery wall, the casing corresponds outer hexagonal bulge loop is equipped with interior hexagonal draw-in groove, the bearing frame joint is fixed in the casing.

Furthermore, be equipped with in the casing and be used for controlling motor pivoted commutator, the conch wall of casing be equipped with commutator control connection's rocker shift knob, rocker shift knob with be equipped with the shell fragment that resets between the commutator.

Furthermore, the shell fragment that resets is a metal dome, it is equipped with the slot to correspond in the casing metal dome, the metal dome peg graft in the slot, rocker shift knob bottom both ends are equipped with two switching-over contacts, reversing switch have with two contact terminals that the switching-over contact matches, the metal dome locate the contact with between the contact terminal, so that rocker shift knob's contact can be through pressing the metal dome with correspond the contact terminal switches on mutually.

Further, still be equipped with charging source in the casing, charging source locates the motor with between the casing rear end, charging source includes rechargeable battery and circuit board, charging source with reversing switch motor electric connection.

Furthermore, the circuit board is provided with a USB interface, and the rear end of the shell is provided with an interface through hole matched with the interface.

Furthermore, the shell comprises a cylindrical outer shell and an installation inner shell fixed in the outer shell, the installation inner shell is composed of a first inner shell and a second inner shell which can be spliced with each other, and a fixed clamping seat matched with the bearing seat, the motor, the reversing switch and the charging power supply is arranged in the installation inner shell.

Furthermore, the front end of the shell is provided with a shaft cover for axially fixing the bearing seat, the shaft cover is in threaded connection with the shell, and a plurality of gaskets are arranged between the shaft cover and the shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the manual-automatic switching mechanism of the screwdriver can realize the manual-automatic integrated function, and the manual-automatic switching mechanism can lock the output shaft and the shell when the power supply is lacked, so that the motor cannot be driven to rotate, and the motor is prevented from being damaged; the traditional one-way valve is cancelled, so that the volume of the screwdriver is reduced, and the screwdriver is convenient to carry, operate and use.

2. Be equipped with charging source in the screwdriver, can charge repeatedly and use, rechargeable battery joint is in the casing, does benefit to change and maintenance, has reduced user's use cost.

3. Each part of the screwdriver is fixedly connected in a buckling mode, the assembly is convenient and fast, and the parts are convenient to disassemble, repair and replace.

Drawings

Fig. 1 is a schematic structural view of a manual and automatic integrated screwdriver according to the present invention;

fig. 2 is an exploded view of a manual and automatic integrated screwdriver according to the present invention;

fig. 3 is an enlarged schematic view of the manual-automatic switching mechanism of the present invention;

fig. 4 is an axial sectional view of the manual-automatic switching mechanism of the present invention;

fig. 5 is a vertical axial sectional view of the manual-automatic switching mechanism of the present invention;

fig. 6 is a schematic structural view of a transmission plate of the manual-automatic switching mechanism of the present invention.

Wherein: 1-a shell; 11-a housing; 12-installing the inner shell; 12 a-a first inner shell; 12 b-a second inner shell; 13-an interface via; 2, a motor; 3-a manual-automatic switching mechanism; 31-an output shaft; 31 a-a convex ring; 31 b-prismatic structure; 32-a bearing seat; 32 a-an epitaxial platform; 32 b-external hexagonal convex ring; 33-a pin; 34-a transmission disc; 34 a-a via; 34 b-shaft hole; 34 c-a notch; 4-a reversing switch; 5-rocker switch button; 6-resetting the elastic sheet; 7-a charging power supply; 71-a rechargeable battery; 72-a circuit board; 72a-USB interface; 8-shaft cover; 9-washer.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be embodied in many other forms without departing from the spirit or essential characteristics thereof, and it should be understood that the invention is not limited to the specific embodiments disclosed below.

Example 1

Referring to fig. 1-6, the utility model provides a pair of manual and automatic integral type screwdriver, including casing 1 and locate casing 1 in motor 2, be equipped with between casing 1 front end and the motor 2 and hand from switching mechanism 3, hand from switching mechanism 3 includes:

the output shaft 31 is arranged between the front end of the shell 1 and the motor 2, one end of the output shaft 31 is provided with a hexagon socket for inserting a screwdriver head, and the end extends out of the shell 1; the other end of the output shaft 31 is provided with a prismatic structure 31b, and the corners of the prismatic structure 31b are rounded off, and the outer peripheral wall of the end is further provided with a convex ring 31a for fixing the output shaft 31 in the axial direction.

The bearing seat 32 is sleeved outside the output shaft 31, an outer hexagonal convex ring 32b is arranged on the outer peripheral wall of one end of the bearing seat 32, and an inner hexagonal clamping groove is formed in the shell 1 corresponding to the outer hexagonal convex ring 32b, so that the bearing seat 32 is clamped and fixed in the shell 1 and serves as a rotary bearing of the output shaft 31. An extension platform 32a for axially fixing the output shaft 31 is arranged in the bearing seat 32, and the convex ring 31a of the output shaft 31 abuts against the extension platform 32 a.

The four pin rods 33 are arranged between the prism structure 31b and the bearing seat 33, the periphery of each pin rod 34 is attached to one edge surface of the prism structure 31b, and the diameter of each pin 34 is equal to the maximum vertical distance from the inner wall of the bearing seat 33 to the edge surface of the prism structure 31b, so that the prism structure 31b, the pin rods 34 and the bearing seat 33 are tightly connected. The four pins 34 simultaneously grip the prism structure 31b, and when the pins 34 rotate, the output shaft 31 is rotated.

And a transmission disc 34 which is arranged on the motor shaft of the motor 2 and is embedded into one end of the extension platform 32a of the bearing seat 32. The transmission disc 34 is provided with a shaft hole 34b connected with a motor shaft of the motor, four circular through holes 34a are arranged on the transmission disc 34 corresponding to the pin rods 33, the inner diameter of each through hole 34a is equal to the diameter of each pin rod 33, and one end of each pin rod 33 is inserted into each through hole 34 a. The transmission disc 34 is further provided with a notch 34c connected with the through hole 34a on the peripheral wall thereof, so that the pin 33 can be attached to the inner wall of the bearing seat 32 through the notch 34 c.

The working principle of the manual-automatic switching mechanism 3 is as follows: in the motoring mode, a rotational force is transmitted from the motor shaft in the direction of the output shaft 31. The motor shaft of the motor 2 drives the transmission disc 34 to rotate, so that the four pins 33 connected with the transmission disc 34 rotate along the inner wall of the bearing seat 32, thereby driving the clamped prism structure 31b to rotate, and further driving the output shaft 31 to rotate.

In the manual mode, a rotational force is transmitted from the output shaft 31 in the direction of the motor shaft. The rotation of the output shaft 31 causes the prism structure 31b to rotate, and since the distance from the edge of the prism structure 31b to the inner wall of the bearing seat 32 is smaller than the diameter of the pin 33, the prism structure 31b is clamped in the included angle formed by the edge surface of the prism structure 31b and the inner wall of the bearing seat 32. Because the bearing seat 32 is fixed with the housing 1, the output shaft 31, the pin 33, the bearing seat 32 and the housing 1 are relatively fixed at this time, and the transmission disc 34 cannot be driven to rotate, so that the transmission of the rotating acting force to the motor shaft is cut off.

Be equipped with in casing 1 and be used for controlling motor pivoted commutator 4, the conch wall of casing 1 is equipped with the rocker shift knob 5 of being connected with commutator 4 control, is equipped with the shell fragment 6 that resets between rocker shift knob 5 and the commutator 4. The reset spring 6 is a snap dome, a slot is arranged in the shell 4 corresponding to the snap dome, and the snap dome is inserted in the slot. Two reversing contacts are arranged at two ends of the bottom of the rocker switch button 5, the reversing switch 4 is provided with two contact ends matched with the reversing contacts, and the snap dome is arranged between the contact ends so that the contact of the rocker switch button 5 can be conducted with the corresponding contact end through pressing the snap dome, and the motor 2 is controlled to rotate positively or rotate reversely.

Still be equipped with charging source 7 in the casing 1, charging source 7 locates between motor 2 and the casing 1 rear end, and charging source 7 includes rechargeable battery 71 and circuit board 72, and charging source 7 and reversing switch 4, motor 2 electric connection. The circuit board 72 is provided with a USB interface 72a, and the rear end of the housing 1 is provided with an interface through hole 13 matching with the USB interface 72 a. The front end of the shell 1 is provided with a shaft cover 8 which axially fixes the bearing seat 33, the shaft cover 8 is in threaded connection with the shell 1, and a plurality of gaskets 9 are arranged between the shaft cover 8 and the shell 1. The casing 1 comprises a cylindrical outer shell 11 and an installation inner shell 12 fixed in the outer shell 11, the installation inner shell 12 is composed of a first inner shell 12a and a second inner shell 12b which can be spliced with each other, and a fixed clamping seat matched with the bearing seat 33, the motor 2, the reversing switch 4 and the charging power supply 7 is arranged in the installation inner shell 12.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments, but all modifications, equivalents, improvements and the like within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a manual and automatic integral type screwdriver, includes the casing and locates motor in the casing, its characterized in that:

the casing front end with be equipped with between the motor and hand from switching mechanism, it includes to hand from switching mechanism:

2. The manual and automatic integrated screwdriver of claim 1, wherein:

the transmission disc is embedded in the bearing seat, a shaft hole connected with a motor shaft of the motor is formed in the transmission disc, a notch connected with the through hole is formed in the peripheral wall of the transmission disc, and the inner diameter of the through hole is equal to the diameter of the pin rod.

3. The manual and automatic integrated screwdriver according to claim 1 or 2, wherein:

and a convex ring is arranged on the outer peripheral wall of the output shaft close to the prism structure, and the outer diameter of the convex ring is between the minimum inner diameter and the maximum inner diameter of the bearing seat.

4. The manual and automatic integrated screwdriver according to claim 1 or 2, wherein:

the bearing seat is characterized in that an outer hexagonal convex ring is arranged on the outer peripheral wall of the bearing seat, the shell corresponds to the outer hexagonal convex ring and is provided with an inner hexagonal clamping groove, and the bearing seat is clamped and fixed in the shell.

5. The manual and automatic integrated screwdriver as recited in claim 4, wherein:

the shell is internally provided with a reversing switch used for controlling the rotation of the motor, the shell wall of the shell is provided with a rocker switch button connected with the reversing switch in a control way, and a reset elastic sheet is arranged between the rocker switch button and the reversing switch.

6. The manual and automatic integrated screwdriver of claim 5, wherein:

the reset spring piece is a snap dome, a slot is formed in the shell body corresponding to the snap dome, the snap dome is inserted into the slot, two reversing contacts are arranged at two ends of the bottom of the rocker switch button, the reversing switch is provided with two contact ends matched with the reversing contacts, and the snap dome is arranged between the contacts and the contact ends.

7. The manual and automatic integrated screwdriver of claim 6, wherein:

still be equipped with charging source in the casing, charging source locates the motor with between the casing rear end, charging source includes rechargeable battery and circuit board, charging source with reversing switch the motor electric connection.

8. The manual and automatic integrated screwdriver of claim 7, wherein:

the USB interface is arranged on the circuit board, and an interface through hole matched with the interface is formed in the rear end of the shell.

9. The manual and automatic integrated screwdriver according to claim 1 or 7, wherein:

the shell comprises a cylindrical outer shell and an installation inner shell fixed in the outer shell, the installation inner shell is composed of a first inner shell and a second inner shell which can be spliced with each other, and a fixed clamping seat matched with the bearing seat, the motor, the reversing switch and the charging power supply is arranged in the installation inner shell.

10. The manual and automatic integrated screwdriver according to claim 1 or 8, wherein:

the front end of the shell is provided with a shaft cover which is used for axially fixing the bearing seat, the shaft cover is in threaded connection with the shell, and a plurality of gaskets are arranged between the shaft cover and the shell.