CN219275702U - Precise electric screwdriver - Google Patents

Abstract

The utility model belongs to the technical field of screwdrivers and discloses a precise electric screwdriver which comprises a tool bit stabilizing device, a driving device and a fixed shell device, wherein the tool bit stabilizing device and the driving device are arranged on the fixed shell device; the tool bit stabilizing device comprises a tool bit pipe fitting, a stabilizing component and a polymorphic corner fitting, wherein one end of the tool bit pipe fitting can be matched with the tool bit, the other end of the tool bit pipe fitting is matched with the stabilizing component, the stabilizing component is connected with the driving device, the polymorphic corner fitting is fixed with the fixed shell device, and the stabilizing component is arranged in the polymorphic corner fitting and can rotate relative to the polymorphic corner fitting; according to the utility model, the shaking generated during the operation of the head position can be reduced through the stabilizing component of the tool bit stabilizing device and the polymorphic corner fitting, and the stability of the head knob of the electric screwdriver is enhanced.

Description

Precise electric screwdriver

Technical Field

The utility model belongs to the technical field of screwdrivers, and particularly relates to a precise electric screwdriver.

Background

At present, the electric screwdriver is mainly used for installing and detaching screws, and compared with a common screwdriver, the electric screwdriver improves working efficiency and assembly precision, and is one of common tools like a production enterprise with an assembly line. When the electric screwdriver is used for screwing the screw, the motor can be used for automatically screwing and unscrewing, so that the electric screwdriver is efficient and quick, and convenience is brought to daily disassembly and assembly of people.

When a screw is screwed, the electric screwdriver is generally required to have good stability at the screwing position so as to reduce the occurrence of the situation that the screw is twisted. At present, the positions of the heads of the electric screwdrivers and the motor clamping screws realize that the contact surfaces of stable parts are relatively small, so that when screws are installed and disassembled, the positions of the heads are easy to shake, the installation accuracy of the screws is influenced, and the use experience is very poor; in addition, the motor torque of the electric screwdriver is limited, and in particular, when a rusted screw is encountered when the electric power is insufficient, the situation that the knob is not moved occasionally occurs, at this time, the electric screwdriver is often used for manually twisting the screw, but if the head of the electric screwdriver is clamped with the motor to be twisted, the contact surface of a stable part is less, the stability is relatively poor, and the electric screwdriver is difficult to adapt to the requirement of the manual twisting.

Therefore, a new technology is needed to solve the problem of poor stability of the electric screw driver head knob in the prior art.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the precise electric screwdriver, which is not easy to shake when a screw is turned, and has good stability.

The utility model adopts the following technical scheme:

the precise electric screwdriver comprises a tool bit stabilizing device, a driving device and a fixed shell device, wherein the tool bit stabilizing device and the driving device are arranged on the fixed shell device; the tool bit stabilising arrangement includes tool bit pipe fitting, stable subassembly and polymorphic corner fittings, tool bit pipe fitting one end can match with the tool bit, the other end with stable subassembly matches, stable subassembly with drive arrangement connects, polymorphic corner fittings with the fixed shell device is fixed, stable subassembly sets up the polymorphic corner fittings the inside and can be relative the polymorphic corner fittings rotates.

Further, the stabilizing assembly comprises a ring insert and a rolling piece, wherein the ring insert is matched with the other end of the tool bit pipe fitting, and the rolling piece is embedded in the ring insert.

Further, one end of the tool bit pipe fitting is provided with a hole groove, and the hole groove can be matched with the tool bit; the other end of the tool bit pipe fitting is provided with a matching part matched with the stabilizing component, the matching part comprises a matching block and a bottom ring, and the matching block is embedded with the stabilizing component.

Further, the ring insert is provided with a plurality of matching petals, and the matching petals are matched with the other end of the tool bit pipe fitting; the ring insert is provided with a plurality of empty slots, and the empty slots are used for arranging the rolling elements; the ring insert is provided with a rotor bore, which is connected to the drive device.

Further, the rolling element is a ball or a round shaft.

Further, the polymorphic corner fitting is a hexagonal nut member.

Further, the positive cross-section profile of the mating block includes a first side, a second side, a third side and a fourth side, the first side and the third side are parallel to each other, the second side and the fourth side are parallel to each other, the first side and the second side are perpendicular to each other, a junction arc transition is formed between the first side and the second side, a junction arc transition is formed between the second side and the third side, a junction arc transition is formed between the third side and the fourth side, and a junction arc transition is formed between the fourth side and the first side.

Further, the driving device is a motor.

Further, the device also comprises a switch device, wherein the switch device is arranged in the fixed shell device and is used for controlling the starting or stopping of the driving device.

Further, a cap is arranged at the tail end of the fixed shell device, and the cap is in threaded connection with the tail end of the fixed shell device.

Compared with the prior art, the utility model has the beneficial effects that: the precision electric screwdriver reduces shaking generated when the head position tool bit pipe fitting works by arranging the tool bit stabilizing device. The cutter head stabilizing device is arranged on the fixed shell device, and when the cutter head stabilizing device is fixed with the fixed shell device, a fixed contact surface (namely a fixed constraint surface) with the fixed shell device is increased through the polymorphic corner fitting, so that the cutter head stabilizing device is stably fixed on the fixed shell device; the other end of tool bit pipe fitting is equipped with stable subassembly, and stable subassembly is connected with drive arrangement to by drive arrangement drive rotation, through stable subassembly, when stable subassembly drove the tool bit pipe fitting and rotate, can increase the rotation contact surface with the polymorphic corner fitting is inside, improves the stability of tool bit stabilising arrangement rotatory during operation. When the manual function knob screw is used, the stabilizing component has the eccentric clamping effect, and the tool bit pipe fitting is not easy to rotate, so that the manual knob function is realized.

Drawings

The technology of the present utility model will be described in further detail below with reference to the attached drawings and detailed description:

FIG. 1 is an exploded view of a precision electric screwdriver;

FIG. 2 is a schematic diagram of the assembly of the precision electric screwdriver without a housing installed;

FIG. 3 is an isometric view of a tool bit stabilization device;

FIG. 4 is a right side view of the tool bit stabilization device;

FIG. 5 is an isometric view of a cutter head tube and stabilizing assembly;

FIG. 6 is an isometric view of the relationship of the cutter head tube and the roller;

FIG. 7 is a right side view of the positional relationship of the cutter head tube and the rolling member;

FIG. 8 is an isometric view of the ring insert and rolling element positional relationship;

FIG. 9 is a left side view of the ring insert and rolling element positional relationship;

figure 10 is an isometric view of a precision electric screwdriver assembly.

Reference numerals:

1-a tool bit stabilizing device; 11-a cutter head pipe fitting; 111-hole slots; 112-mating portion; 1121-mating blocks; s1-a first side; s2-a second side; s3-a third side; s4-fourth side; s5-arc; 1122-bottom ring; 12-a stabilizing assembly; 121-a ring insert; 1211-empty slots; 1212-rotor bore; 1213-a mating flap; 122-rolling elements; 13-polymorphic corner fitting; 131-hexagonal nut member; 132-lumen;

2-a driving device; 21-an electric motor;

3-switching means; 31-a switch button; 311-a switch button pad; 32-a circuit board; 33-battery; 34-a display section; 341-displaying a film layer;

4-a fixed shell device; 41-a head assembly; 411-head shell portion; 4111-lamp hole; 4112-tube holes; 412-a limiting piece; 4121-a lamp; 413-a striped ring; 42-fixing the assembly; 421-a first fixed bracket; 422-a second fixed bracket; 43-a housing; 431-first screen aperture; 432-second screen aperture;

5-a charging interface;

6-cap.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present utility model are merely with respect to the mutual positional relationship of the constituent elements of the present utility model in the drawings.

Referring to fig. 1 to 10, a precision electric screwdriver comprises a tool bit stabilizing device 1, a driving device 2 and a fixed shell device 4, wherein the tool bit stabilizing device 1 and the driving device 2 are arranged on the fixed shell device 4; the tool bit stabilising arrangement 1 includes tool bit pipe fitting 11, stable subassembly 12 and polymorphic corner fittings 13, tool bit pipe fitting 11 one end can match the tool bit, the other end with stable subassembly 12 matches, stable subassembly 12 with drive arrangement 4 is connected, polymorphic corner fittings 13 with fixed shell device 4 is fixed, stable subassembly 12 sets up polymorphic corner fittings 13 the inside can be relative polymorphic corner fittings 13 rotate.

In one embodiment, the stabilizing assembly 12 includes a ring insert 121 and a rolling member 122, wherein the ring insert 121 mates with the other end of the cutter head tube 11 and is embedded with the rolling member 122.

In one embodiment, one end of the tool bit tube 11 is provided with a hole groove 111, and the hole groove 111 can be matched with a tool bit for screwing; the other end of the cutter head pipe fitting 11 is provided with a matching part 112 matched with the stabilizing component 12, the matching part 112 comprises a matching block 1121 and a bottom ring 1122, and the matching block 1121 is embedded with the stabilizing component 12. In this embodiment, the hole groove 111 has a hexagonal hole groove 111.

In one embodiment, the ring insert 121 is provided with several mating petals 1213, the mating petals 1213 mating with mating blocks 1121 at the other end of the cutter head tube 11; the ring insert 121 is provided with a plurality of empty slots 1211, and the empty slots 1211 are used for arranging the rolling elements 122; the ring insert 121 is provided with a rotor bore 1212, the rotor bore 1212 being connected to the drive 2.

Specifically, the fit flap 1213 of the ring insert 121 is fitted with the fit block 1121, the rolling element 122 is disposed at the position of the hollow slot 1211 of the ring insert 121, the rotor hole 1212 is disposed on the ring insert 121, the rotor hole 1212 is matched with the rotor of the driving device 2, when the driving device 2 rotates, the rotor drives the ring insert 121 to rotate, and drives the cutter head pipe fitting 11 to rotate, at this time, the fit block 1121, the ring insert 121 and the rolling element 122 are disposed together in the inner cavity 132 of the multi-form corner fitting 13 and rotate in the inner cavity 132 of the multi-form corner fitting 13, and the rolling element 122 is disposed at the position of the hollow slot 1211, so that the rotational contact area of the fit block 1121, the ring insert 121 and the inner cavity of the multi-form corner fitting 13 is increased, and the rolling element 122 also plays a role of lubrication at this time, so as to reduce the rotational friction, and make the cutter head pipe fitting 11 stably rotate and slide;

when the torque output by the driving device 2 is insufficient and manual screwing is used, the tool bit pipe fitting can generate tiny relative rotation, the ring insert 121 can not rotate, the rolling element 122 in the matching part 112 has an eccentric effect, the rolling element 122 can be blocked due to the eccentric effect, and the manual screwing function is realized; therefore, the precise electric screwdriver is integrated with manual-automatic functions.

In one embodiment, the rolling elements 122 are balls or round shaft elements. The rolling elements 122 may be balls or round shaft elements, and are disposed in the empty slots 1211. In this embodiment, the rolling member 122 is a ball, two balls are disposed at each hollow 1211, and eight balls are disposed in total in four hollow 1211; in another embodiment, four recesses 1211 are each provided with a circular shaft. In other embodiments, the ball or the round shaft member may be combined, for example, four empty slots are provided, two empty slots 1211 are provided for the ball, and two empty slots are provided for the round shaft member.

In one embodiment, the multi-shaped corner fitting 13 is a hex nut. Because the polymorphic corner fitting 13 is hexagonal nut piece 131, six faces of hexagonal nut piece 131 are fixed with the plastic face of fixed shell device 4, and fixed faying face is more, and when the fixed restraint face of increase, six angular arriss of hexagonal nut piece 131 play fine restriction polymorphic corner fitting 13 self and take place small pivoted effect, produce when reducing accurate electric screw driver knob screw and rock. In other embodiments, other shapes of multi-sided nut members are also possible.

In one embodiment, the positive cross-sectional profile of the mating block 1121 includes a first side S1, a second side S2, a third side S3, and a fourth side S4, the first side S1 and the third side S3 are parallel to each other, the second side S2 and the fourth side S4 are parallel to each other, the first side S1 and the second side S2 are perpendicular to each other, the first side S1 and the fourth side S4 are perpendicular to each other, a joint arc S5 between the first side S1 and the second side S2 is in transition, a joint arc S5 between the second side S2 and the third side S3 is in transition, a joint arc S5 between the third side S3 and the fourth side S4 is in transition, and a joint arc S5 between the fourth side S4 and the first side S1 is in transition.

In one embodiment, the driving device 2 is a motor 21. Specifically, the rotor of the motor 21 is matingly secured with the rotor bore 1212 of the ring insert 121.

In one embodiment, the device further comprises a switch device 3, wherein the switch device 3 is arranged inside the fixed shell device 4, and the switch device 3 is used for controlling the starting or stopping of the driving device 2.

In one embodiment, the switch device 3 includes a switch button 31, a circuit board 32, a battery 33 and a display part 34, the circuit board 32 is fixed with the fixed shell device 4, the battery 33 is arranged on the circuit board 32, the electric energy of the battery 33 is supplied by the charging interface 5, the switch button 31 is arranged on the circuit board 32 and controls the driving device 2 to start and stop rotating through the circuit board 32, and the display part 34 is arranged on the circuit board 32 and is used for displaying the starting or stopping information, the battery electric quantity information and the like of the switch button 31. Wherein, correspondingly, the switch button 31 is provided with a switch button pad 311, and the display part 34 is provided with a display film layer 341. Specifically, the driving device 2 rotates and is powered by the battery 33, the switch button 31 controls the driving device 2 to start or stop rotating, the battery 33 also supplies power to the display part 34, so as to display information, and the display part 34 displays corresponding rotation information, specifically, forward rotation information or reverse rotation information, and also displays the electric quantity information of the battery 33 when the switch button 31 is pressed.

In one embodiment, the rear end of the fixing shell device 4 is provided with a cap 6, and the cap 6 is in threaded connection with the rear end of the fixing shell device 4. The switch device 3 is provided with a charging interface 5 for charging, the charging interface 5 is connected with the tail end part of the fixed shell device 4 in a jogged mode, and a cap 6 is arranged outside the charging interface 5. Specifically, the cap 6 can protect the charging interface 5 at the tail end, also plays a role in fastening, can fix the fixed shell device 4, and the cap 6 is in threaded connection with the tail end of the fixed shell device 4, so that the assembly and the disassembly can be convenient.

In one embodiment, the fixing housing device 4 includes a head assembly 41, a fixing assembly 42, and a housing 43, the fixing assembly 42 fixes the tool bit stabilizing device 1, the driving device 2, and the switching device 3, and the housing 43 encloses the fixing assembly 42 inside the housing, and the head assembly 41 is fixed to one end of the fixing assembly 42. Wherein the housing 43 is provided with a first screen hole 431 for matching the switch button 31 and a second screen hole 432 for matching the display portion 34.

In one embodiment, the fixing assembly 42 includes a first fixing bracket 421 and a second fixing bracket 422, where the first fixing bracket 421 and the second fixing bracket 422 are combined in a butt joint manner, and the tool bit stabilizing device 1, the driving device 2 and the switching device 3 are wrapped and fixed.

In one embodiment, the head assembly 41 includes a head housing 411, a stopper 412, and a striped ring 413, the head housing 411 is connected to the fixing assembly 42, the stopper 412 is disposed between the head housing 411 and the fixing assembly 42, and the striped ring 413 connects the housing 43 and the head housing 411. Specifically, the head housing 411 is fixed to the front ends of the first fixing bracket 421 and the second fixing bracket 422, and the tail ends of the first fixing bracket 421 and the second fixing bracket 422 are provided with external threads, and the external threads are connected with the internal threads of the cap 6 in a matching manner.

In one embodiment, the head housing 411 is provided with a lamp hole 4111, and the limiting member 412 is provided with a lamp 4121, and the lamp 4121 is used for illumination through the lamp hole 4111, and the lamp 4121 is driven to illuminate by the switching device 3. Specifically, the electric power of the lamp 4121 is supplied from the battery 33. The head housing 411 is further provided with a pipe hole 4112 which mates with the bit tube 11.

Other contents of the precision electric screwdriver according to the present utility model are referred to in the prior art, and are not described herein.

The present utility model is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical proposal of the present utility model.

Claims (10)

1. The precise electric screwdriver is characterized by comprising a tool bit stabilizing device, a driving device and a fixed shell device, wherein the tool bit stabilizing device and the driving device are arranged on the fixed shell device; the tool bit stabilising arrangement includes tool bit pipe fitting, stable subassembly and polymorphic corner fittings, tool bit pipe fitting one end can match with the tool bit, the other end with stable subassembly matches, stable subassembly with drive arrangement connects, polymorphic corner fittings with the fixed shell device is fixed, stable subassembly sets up the polymorphic corner fittings the inside and can be relative the polymorphic corner fittings rotates.

2. The precision electric screwdriver according to claim 1, wherein the stabilizing assembly comprises a ring insert and a rolling member, the ring insert being mated with the other end of the bit tube and the rolling member being embedded therein.

3. The precision electric screwdriver according to claim 1, wherein one end of the tool bit tube is provided with a hole groove, and the hole groove can be matched with the tool bit; the other end of the tool bit pipe fitting is provided with a matching part matched with the stabilizing component, the matching part comprises a matching block and a bottom ring, and the matching block is embedded with the stabilizing component.

4. The precision electric screwdriver according to claim 2, wherein the ring insert is provided with a plurality of mating petals, and the mating petals are matched with the other end of the tool bit tube; the ring insert is provided with a plurality of empty slots, and the empty slots are used for arranging the rolling elements; the ring insert is provided with a rotor bore, which is connected to the drive device.

5. The precision electric screwdriver according to claim 2, wherein the rolling element is a ball or a round shaft.

6. The precision electric screwdriver of claim 1, wherein the multi-pointed corner piece is a hex nut piece.

7. The precision electric screwdriver according to claim 3, wherein the positive cross-sectional profile of the mating block comprises a first side, a second side, a third side, and a fourth side, the first side and the third side are parallel to each other, the second side and the fourth side are parallel to each other, the first side and the second side are perpendicular to each other, a junction between the first side and the second side is rounded, a junction between the second side and the third side is rounded, a junction between the third side and the fourth side is rounded, and a junction between the fourth side and the first side is rounded.

8. The precision electric screwdriver according to claim 1, wherein the driving means is a motor.

9. The precision electric screwdriver according to claim 1, further comprising a switching device disposed inside the fixed housing device, the switching device for controlling the driving device to start or stop.

10. The precision electric screwdriver according to claim 1, wherein a cap is provided at a rear end of the fixing case means, and the cap is screw-coupled with the rear end of the fixing case means.

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