CN203592441U

CN203592441U - Electric screwdriver

Info

Publication number: CN203592441U
Application number: CN201320843423.0U
Authority: CN
Inventors: 翁志荣
Original assignee: NINGBO YONGFEITE ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: NINGBO YONGFEITE ELECTRONIC SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2014-05-14
Anticipated expiration: 2023-12-19

Abstract

The utility model discloses an electric screwdriver which comprises a hollow cylindrical housing (1), a motor (7), a gear output shaft (2) connected with the motor (7), a tail cover (3), a battery (4) and a negative-pole contact piece (15). The tail cover (3) is arranged at one end of the housing away from the gear output shaft (2), and the maximum diameter of the housing (1) is 24-35mm. The electric screwdriver further comprises an irregular spring (8) connected with the battery (4) and arranged in the tail cover (3) and a battery ring (14), wherein one end of the battery ring (14) is connected with the irregular spring, the other end of the battery ring (14) is connected with the negative-pole contact piece (15), and the tail cover (3) is in clamping connection with the housing (1). The electric screwdriver is convenient to install, free of poor contact and capable of working in a narrow space, and the service life of the electric screwdriver is prolonged.

Description

Electric screwdriver

Technical field

The utility model relates to field of power tools, especially a kind of electric screwdriver.

Background technology

The installation of the screw on the sophisticated products such as clock and watch, glasses, mobile phone is a kind of very important operation, installs and the bad performance that directly affects product.According to prior art, the general electric screw driver that battery is housed that adopts of installation of the sophisticated product screws such as clock and watch, glasses, mobile phone, the negative pole of battery is connected on circuit by tower spring, the negative pole contact chip that is arranged in contact chip and the shell in tail-hood, this structure has following shortcoming, first: because the contact chip in tail-hood need to be welded on tower spring, like this, install pretty troublesome, second: welding easily produces loose contact, affects the normal work of electric screwdriver.In addition, two contact chips screw in process tail-hood, can produce friction, of long duration, two contact chips can produce aging and distortion, and electric screwdriver two contact chips in vibration processes easily disconnect, cause the interruption of electric screwdriver work, reduced the service life of electric screwdriver.

The electric screwdriver of prior art is because volume is large, and at some small spaces, electric screwdriver cannot enter and in it, carry out installation and removal, and is inconvenient to carry.

Utility model content

Technical problem to be solved in the utility model is: overcome the defect of above prior art, provide a kind of easy for installation, can not produce loose contact and can extend electric screwdriver service life and can be at the electric screwdriver of work in narrow space.

Technical solution adopted in the utility model is: a kind of electric screwdriver, it comprises the shell of hollow cylindrical, motor, the gear output shaft being connected with motor, tail-hood, battery and negative pole contact chip, described tail-hood is located at shell one end away from gear output shaft, the maximum gauge of described shell is 24 bold and unconstrained meters～35 millimeters, it also comprises and is connected with battery and is located at the deformed spring in tail-hood, one end is connected the battery circle that the other end is connected with negative pole contact chip with deformed spring, described deformed spring refers to that outer spring circle and inner spring circle hold together, outer spring circle is divided into large end and small end, the end of inner spring circle and small end are positioned at the two ends of spring, the end of inner spring circle is near large end, described battery circle comprises the last point of kink bending outside copper sheathing body of copper sheathing body and copper sheathing body top, the large end of described deformed spring is against the kink on battery circle, the end of inner spring circle is against the negative pole of battery, small end is connected in tail-hood, the copper sheathing body of described battery circle is established one end near tail-hood in the enclosure, kink leans against on shell, and described negative pole contact chip is close to the copper sheathing body interior of battery circle, described tail-hood and shell clamping.

Adopt after above structure, the utility model electric screwdriver compared with prior art has the following advantages: the maximum gauge of electric screwdriver is a very little scope, can grasp and can in small space, work with a hand, pass through deformed spring, battery circle couples together the negative pole of battery and negative pole contact chip, easy for installation, can not produce loose contact, than prior art few individual contact chip, simple in structure, reliably, electric screwdriver contact chip in vibration processes can not disconnect with spring, be not easy power-off, tail-hood and shell clamping, can reduce the friction between battery circle and negative pole contact chip in the process of screwing, extend the service life of electric screwdriver.

As preferably, described shell one side be provided with luminous lamp switch for controlling luminous lamp switch and be located at shell opposite side for controlling the press button of motor forward and reverse, luminous lamp switch and press button are arranged on the both sides of shell, such two switches are located at diverse location, can not push the wrong in the course of the work switch.

As preferably, on described press button, there are two buttons, the groove of being separated by between two buttons, can not press down press button together and cause short circuit when touching the button switch.

As preferably, described outer casing end is provided with illuminating lamp near one end of gear output shaft, and illuminating lamp is located near cutter head, the in the situation that of insufficient light, can illuminate place to be processed with illuminating lamp, convenient processing.

As preferably, described gear output shaft is provided with the cutter head groove for cutter head is installed, and can change at any time different cutter heads, applied range.

Accompanying drawing explanation

Fig. 1 is the perspective view of the utility model electric screwdriver.

Fig. 2 is the cross-sectional view of the utility model electric screwdriver.

Fig. 3 is the main TV structure schematic diagram of the utility model electric screwdriver.

Fig. 4 is the perspective view of the utility model electric screwdriver deformed spring.

Fig. 5 is the perspective view of the utility model electric screwdriver battery circle.

Wherein, 1, shell, 2, gear output shaft, 3, tail-hood, 4, battery, 5, wiring board, 6, illuminating lamp, 7, motor, 8, deformed spring, 8.1, end greatly, 8.2, end, 8.3, small end, 9, copper sheathing body, 10, press button, 11, luminous lamp switch, 12, kink, 13, cutter head groove, 14, battery circle, 15, negative pole contact chip, 16, negative spring, 17, positive strap, 18, the first switch contact, 19, second switch contact chip.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in the figure, the utility model provides a kind of electric screwdriver, it comprises the shell 1 of hollow cylindrical, motor 7, the gear output shaft 2 being connected with motor 7, tail-hood 3, battery 4 and negative pole contact chip 15, described tail-hood 3 is located at shell 1 one end away from gear output shaft 2, the maximum gauge of described shell 1 is 24 bold and unconstrained meters～35 millimeters, it also comprises and is connected with battery 4 and is located at the deformed spring 8 in tail-hood 3, one end is connected the battery circle 14 that the other end is connected with negative pole contact chip 15 with deformed spring 8, described tail-hood 3 and shell 1 clamping, described deformed spring 8 refers to that outer spring circle and inner spring circle hold together, outer spring circle is divided into large end 8.1 and small end 8.3, end 8.2 and the small end 8.3 of inner spring circle is positioned at the two ends of spring, the end 8.2 of inner spring circle is near large end 8.1, described battery circle 14 comprises the last point of kink bending outside copper sheathing body 12 of copper sheathing body 9 and copper sheathing body top, the large end 8.1 of described deformed spring 8 is against the kink on battery circle 14, the end 8.2 of inner spring circle is against the negative pole of battery 14, small end 8.3 is connected in tail-hood 3, the copper sheathing body of described battery circle 14 is located at the interior one end near tail-hood 3 of shell 1, kink 12 leans against on shell 1, described negative pole contact chip 15 is close to copper sheathing body 9 inside of battery circle 14, described shell 1 one sides be provided with luminous lamp switch for controlling illuminating lamp 6 switches 11 and be located at shell 1 opposite side for controlling the press button 10 of motor 7 forward and reverse, on described press button 10, there are two buttons, the groove of being separated by between two buttons, described shell 1 end is provided with illuminating lamp 6 near one end of gear output shaft 2, described gear output shaft 2 is provided with the cutter head groove 13 for cutter head is installed.

This use utility model electric screwdriver compared with prior art has the following advantages: the maximum gauge of electric screwdriver is a very little scope, can grasp and can in small space, work with a hand, by deformed spring 8, battery circle 14 couples together the negative pole of battery 4 and negative pole contact chip 15, easy for installation, can not produce loose contact, than prior art few individual contact chip, simple in structure, reliably, electric screwdriver contact chip in vibration processes can not disconnect with spring, be not easy power-off, tail-hood 3 and shell 1 clamping, can reduce the friction between battery circle 14 and negative pole contact chip 15 in the process of screwing, extend the service life of electric screwdriver.

Specifically, described shell 1 one sides be provided with luminous lamp switch for controlling illuminating lamp 6 switches 11 and be located at shell 1 opposite side for controlling the press button 10 of motor 7 forward and reverse, luminous lamp switch 11 and press button 10 are arranged on the both sides of shell, such two switches are located at diverse location, can not push the wrong in the course of the work switch; On described press button 10, have two buttons, the groove of being separated by between two buttons, can not press down press button 10 together and cause short circuit when touching the button switch 10; Described shell 1 end is provided with illuminating lamp 6 near one end of gear output shaft 2, and illuminating lamp 6 is located near cutter head, the in the situation that of insufficient light, can illuminate place to be processed with illuminating lamp 6, convenient processing; Described gear output shaft 2 is provided with the cutter head groove 13 for cutter head is installed, and can change at any time different cutter heads, applied range.

Particularly, the maximum gauge of shell 1 is 24 millimeters～35 millimeters, preferably diameter is 30 millimeters, the position of maximum gauge is at a place that is provided with switch, electric screw driver is 10 millimeters～20 millimeters for the local diameter of shaking hands, can hold by one hand, easily, and shell 1 is made up of two symmetrical housings of profile, shell 1 is wrapped one deck encapsulate above, with holding at the position that is provided with encapsulate, use as snug as a bug in a rug, the interior installation deformed spring of tail-hood 3, different from tower spring in flashlight is one end that diameter is large is near GND, the little one end of diameter is near tail-hood 3 bottoms, simple in structure, save space, negative pole contact chip 15 is stuck in the draw-in groove of shell 1, wiring board 5 is provided with the first switch contact 18 and second switch contact chip 19, on wiring board 5, be provided with the circuit of the connection motor 7 of two current opposite in direction, the switch of these two circuit lays respectively at the below of the first switch contact 18 and the second contact chip 19, when pressing the button the left side of switch 10, the first switch contact 18 will be incorporated on corresponding circuit, circuit communication, motor 7 forwards, when pressing the button the right of switch 10, second switch contact chip 19 will be incorporated on corresponding circuit, circuit communication, motor 7 reverses, the circuit of described illuminating lamp 6 is provided with voltage stabilizing booster circuit, described voltage stabilizing booster circuit comprises the electric capacity and the triode that are connected in parallel on circuit, electric capacity plays burning voltage, the triode high-tension effect that hoists, in the time that motor 7 and illuminating lamp 6 are worked simultaneously, can not affect because of the work of motor 7 brightness of illuminating lamp 6, voltage stabilizing booster circuit both can be located on wiring board 5, also can be located on the wire between illuminating lamp 6 and wiring board 5, , deformed spring 8 is produced by coiling machine, only need to corresponding parameter be set at coiling machine just passable, that those skilled in the art just see and can work it out.

Be described with regard to the utility model preferred embodiment above, but can not be interpreted as it is limitations on claims.This practicality is carried out and is not only confined to above embodiment; its concrete structure allows to change; if battery 4 can be that dry cell can be also lithium battery; charging structure can also be set; can charge to battery, all various variations of doing in the protection domain of the utility model demand for independence are all in protection domain of the present utility model.

Claims

1. electric screwdriver, it comprises the shell (1) of hollow cylindrical, motor (7), the gear output shaft (2) being connected with motor (7), tail-hood (3), battery (4) and negative pole contact chip (15), described tail-hood (3) is located at shell (1) one end away from gear output shaft (2), it is characterized in that: the maximum gauge of described shell (1) is 24 bold and unconstrained meters～35 millimeters, it also comprises and is connected with battery (4) and is located at the deformed spring (8) in tail-hood (3), one end is connected the battery circle (14) that the other end is connected with negative pole contact chip (15) with deformed spring (8), described deformed spring (8) refers to that outer spring circle and inner spring circle hold together, outer spring circle is divided into large end (8.1) and small end (8.3), the end (8.2) of inner spring circle and small end (8.3) are positioned at the two ends of spring, the end (8.2) of inner spring circle is near large end (8.1), described battery circle (14) comprises copper sheathing body (9) and the copper sheathing body last point of kink bending outside copper sheathing body in top (12), the large end (8.1) of described deformed spring (8) is against the kink on battery circle (14), the end (8.2) of inner spring circle is against the negative pole of battery (14), small end (8.3) is connected in tail-hood (3), the copper sheathing body of described battery circle (14) is located at one end near tail-hood (3) in shell (1), it is upper that kink (12) leans against shell (1), and described negative pole contact chip (15) is close to copper sheathing body (9) inside of battery circle (14), described tail-hood (3) and shell (1) clamping.

2. electric screwdriver according to claim 1, is characterized in that: described shell (1) one side be provided with the luminous lamp switch (11) for controlling illuminating lamp (6) switch and be located at shell (1) opposite side for controlling the press button (10) of motor (7) forward and reverse.

3. electric screwdriver according to claim 2, is characterized in that: on described press button (10), have two buttons, the groove of being separated by between two buttons.

4. electric screwdriver according to claim 1, is characterized in that: described shell (1) end is provided with illuminating lamp (6) near one end of gear output shaft (2).

5. electric screwdriver according to claim 1, is characterized in that: described gear output shaft (2) is provided with the cutter head groove (13) for cutter head is installed.