CN218254894U

CN218254894U - Safety screw driver

Info

Publication number: CN218254894U
Application number: CN202222066234.9U
Authority: CN
Inventors: 周中伟
Original assignee: Ningbo Juyi Tools Co ltd
Current assignee: Ningbo Juyi Tools Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-01-10
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses an electric safety screwdriver, insulating housing include the holding chamber and with the holding chamber the fixed orifices of intercommunication, the afterbody of electrically conductive cutter arbor is fixed in the fixed orifices, be provided with the examination electric control panel in the holding chamber, the examination electric control panel includes examination electric circuit, battery, LED lamp and elastic conductive piece, insulating end cover lid closes the opening part that is fixed in the holding chamber, the battery links to each other with the power supply end that is used for supplying power to the LED lamp on the examination electric circuit; the LED lamp is electrically connected with a power test signal output end of the power test circuit; the elastic conductive piece is electrically connected to the electricity testing detection end of the electricity testing circuit and is positioned at the lower end of the electricity testing control board; the top pressing part of the insulating end cover presses the upper end of the electricity testing control board or the battery so that the lower end of the elastic conductive piece is arranged in the fixing hole and then is abutted against the tail part of the conductive cutter bar. The electricity testing circuit is arranged between the insulating shell and the insulating shell in a closed mode, so that electricity testing work can be completed under the condition that a human body does not contact the electricity testing circuit, and use safety is improved.

Description

Safety screw driver

Technical Field

The utility model belongs to the technical field of a screwdriver technique and specifically relates to wade electric safety screwdriver.

Background

The test pencil is as the common use tool in electrician's wiring work, mainly survey the circular telegram position whether have electricity, whether correct with this detection circuit wiring, or whether can survey in advance when needing to touch the circuit wire whether have electricity, thereby can make the outage preparation before circuit maintenance, avoid the incident to take place, however test pencil among the prior art generally has the touch utmost point, thereby whether have the electric detection in-process must the people's finger touch the touch utmost point just can make test pencil work test electricity work, nevertheless this mode of operation often takes place staff's incident such as electrocute when the high voltage test, so the operation is very unsafe, in view of such defect, the inventor is based on the way of research improvement, finally have the utility model discloses produce.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical defects and designing the safety screw driver with electricity, which has the following specific structure.

The utility model relates to an electric safety screwdriver, including insulating housing, insulating end cover and electrically conductive cutter arbor, insulating housing includes the holding chamber and with the fixed orifices of holding chamber intercommunication, the afterbody of electrically conductive cutter arbor is fixed in the fixed orifices, be provided with the examination electric control panel in the holding chamber, the examination electric control panel includes examination electric circuit, battery, LED lamp and elasticity electrically conductive piece, insulating end cover lid closes the opening part that is located the holding chamber on being fixed in insulating housing, the battery links to each other with the power supply end that is used for supplying power to the LED lamp on the examination electric circuit; the LED lamp is electrically connected to a power test signal output end of the power test circuit; the elastic conductive piece is electrically connected with a test electricity detection end of the test circuit and is positioned at the lower end of the test electricity control board; the top pressing part of the insulating end cover presses the upper end of the electricity testing control board or the battery so that the lower end of the elastic conductive piece is arranged in the fixing hole and then is abutted against the tail part of the conductive cutter bar; at least one of the insulating shell and the insulating end cover is made of light-transmitting materials, so that light emitted by the LED lamp can penetrate through at least one of the insulating shell and the insulating end cover.

According to above relate to electric safety screwdriver, the inner wall in holding chamber is provided with the screens groove of two relative settings, and two screens inslots are gone into respectively to the relative both sides of examination electric control board.

According to the electric safety screwdriver, the rod part of the conductive screwdriver rod is coated and fixed with the insulating sleeve.

According to the electric-related safety screwdriver, the jacking portion comprises a positioning sleeve formed on the edge of the opening of the insulating end cover, the positioning sleeve is arranged inside the opening of the accommodating cavity and jacks the upper end of the electricity testing control board or the battery, and the outer wall of the positioning sleeve is attached to the inner wall of the accommodating cavity.

According to the electric safety screwdriver, the connecting sleeve and the counter bore communicated with the connecting hole in the connecting sleeve are formed in the inner wall of the insulating end cover, the connecting column is formed on the inner wall of the containing cavity, the threaded hole corresponding to the counter bore is formed in the connecting column, the bolt penetrates through the counter bore and is in threaded connection with the threaded hole after penetrating through the connecting hole, and therefore the insulating end cover is fixed on the insulating shell.

According to the safe screwdriver that paddles, the electricity of relating to of above, the circuit of trying to test includes resistance R1, resistance R2, triode Q1, triode Q2 and battery, resistance R1's one end links to each other with triode Q1's base, resistance R1's other end lead wire is as the electricity detection end of trying to find, the projecting pole of triode Q1's base links to each other with triode Q2's base, triode Q1's collecting electrode links to each other with resistance R2's one end, resistance R2's the other end links to each other with the anodal of LED lamp and the anodal of battery respectively, triode Q2's collecting electrode links to each other with the negative pole of LED lamp, triode Q2's projecting pole links to each other with the negative pole of battery.

According to above-mentioned safe screwdriver of involving in electricity, still include Y type conducting strip, two inclined piece tip on the Y type conducting strip are fixed in on the examination electric control board to link to each other with the other end of resistance R2, the battery screens is between examination electric control board's conducting surface and Y type conducting strip, examination electric control board's conducting surface links to each other with triode Q2's projecting pole.

According to the electric safety screwdriver, the elastic conductive piece is a V-shaped metal wire or a V-shaped metal sheet or a metal spiral spring.

The utility model discloses an it paddles safe screwdriver, beneficial effect as follows:

1. the electricity testing circuit is arranged between the insulating shell and the insulating shell in a closed mode, so that electricity testing work can be completed under the condition that a human body does not contact the electricity testing circuit, and use safety is improved.

2. Each part is a modularized part, so that the assembly is convenient.

3. The arrangement of the clamping groove ensures that the electricity testing control board is reliably positioned in the accommodating cavity.

Drawings

FIG. 1 is a schematic view (I) of the overall structure of the screwdriver;

FIG. 2 is a schematic view (II) of the overall structure of the screwdriver;

FIG. 3 is a schematic view (III) of the overall structure of the screwdriver;

FIG. 4 is a top view of the screwdriver;

FIG. 5 is a schematic diagram of a test control board;

fig. 6 is a schematic diagram of a test circuit structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art all belong to the protection scope of the present invention.

The embodiment is as follows:

as shown in fig. 1 to 6, the electric safety screwdriver described in this embodiment includes an insulating housing 1, an insulating end cap 2, and a conductive screwdriver rod 3, where the conductive screwdriver rod 3 is a metal screwdriver rod, the insulating housing 1 includes a receiving cavity 11 and a fixing hole 14 communicated with the receiving cavity 11, a tail portion of the conductive screwdriver rod 3 is fixed in the fixing hole 14, a voltage test control board 5 is disposed in the receiving cavity 11, the voltage test control board 5 includes a voltage test circuit, a battery 52, an LED lamp 53, and an elastic conductive member 4, and the elastic conductive member 4 is a V-shaped metal wire or a V-shaped metal sheet or a metal coil spring. The insulating end cover 2 is fixedly covered on the opening of the accommodating cavity 11 on the insulating shell 1, and the battery 52 is connected with a power supply end on the power testing circuit for supplying power to the LED lamp 53; the LED lamp 53 is electrically connected to a test signal output terminal of the test circuit; the elastic conductive piece 4 is electrically connected to the electricity testing detection end of the electricity testing circuit and is positioned at the lower end of the electricity testing control board 5; the top pressing part of the insulating end cover 2 presses the upper end of the electricity testing control board 5 or the battery 52, so that the lower end of the elastic conductive piece 4 is arranged in the fixing hole 14 and then is abutted against the tail part of the conductive cutter bar 3; at least one of the insulating shell 1 and the insulating end cover 2 is made of a light-transmitting material, so at least one of the insulating shell 1 and the insulating end cover 2 is a light-transmitting plastic part, wherein the electricity testing circuit comprises a resistor R1, a resistor R2, a triode Q1, a triode Q2 and a battery 52, one end of the resistor R1 is connected with a base electrode of the triode Q1, a lead at the other end of the resistor R1 is used as an electricity testing detection end, an emitting electrode of the base electrode of the triode Q1 is connected with a base electrode of the triode Q2, a collecting electrode of the triode Q1 is connected with one end of the resistor R2, the other end of the resistor R2 is respectively connected with a positive electrode of the LED lamp 53 and a positive electrode of the battery 52, a collecting electrode of the triode Q2 is connected with a negative electrode of the LED lamp 53, and an emitting electrode of the triode Q2 is connected with a negative electrode of the battery 52.

When no current is input into the electricity testing detection end, the triode Q1 and the triode Q2 are both disconnected, the LED lamp 53 is not lighted, when the tool bit of the conductive tool bar 3 is in contact with the electrified circuit and the electricity testing detection end has current input, as the triode Q1 and the triode Q2 have the high-power amplification effect, larger collector current is generated on the triode Q2, the LED lamp 53 is pushed to emit light, and the light source emitted by the LED lamp 53 penetrates through at least one of the insulating shell 1 and the insulating end cover 2, so that a user is reminded that the detection part has current output.

The tool bit of the conductive tool bar 3 can be a linear tool bit or a cross tool bit to adapt to a linear screw or a cross screw.

The inner wall of holding chamber 11 is formed with two vertical sand grips 12 of relative setting, forms screens groove 121 on two vertical sand grips 12, and the relative both sides of examination electric control board 5 block respectively in two screens grooves 121 to make the control panel installation reliable and stable.

The pole portion cladding of electrically conductive cutter arbor 3 is fixed with insulating cover 4, and insulating cover 4 can be rubber sleeve or plastic cover to insulating 3 middle parts of electrically conductive cutter arbor, avoid touching the cutter arbor middle part at the mistake of examination electricity in-process and take place incident such as electric shock.

The jacking portion comprises a positioning sleeve 21 formed at the edge of an opening of the insulating end cover 2, the positioning sleeve 21 is arranged inside the opening of the accommodating cavity 11, the upper end of the jacking electricity testing control board 5 or the battery 52 is pressed, the outer wall of the positioning sleeve 21 is attached to the inner wall of the accommodating cavity 11, a connecting sleeve 22 is formed on the inner wall of the insulating end cover 2, a counter bore 23 communicated with a connecting hole in the connecting sleeve 22 is formed, a connecting column 13 is formed on the inner wall of the accommodating cavity 11, a threaded hole 131 corresponding to the position of the counter bore 23 is formed in the connecting column 13, a bolt 6 is arranged in the counter bore 23 in a penetrating mode, the bolt 6 is in threaded connection with the threaded hole 131 after penetrating through the connecting hole, so that the insulating end cover 2 is fixed on the insulating shell 1, the positioning sleeve 21, the connecting sleeve 22 and the insulating end cover 2 are combined into an integrated structure, and the insulating shell 1 and the connecting column 13 are combined into an integrated structure.

The device also comprises a Y-shaped conducting strip 51, the end parts of two inclined strips on the Y-shaped conducting strip 51 are fixed on the electricity testing control panel 5 and are connected with the other end of the resistor R2, the battery 52 is clamped between the conducting surface of the electricity testing control panel 5 and the Y-shaped conducting strip 51, the conducting surface of the electricity testing control panel 5 is connected with the emitter of the triode Q2, and the Y-shaped conducting strip 51 is a metal strip, so that the battery 52 is stably and reliably installed.

The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without changing the shape or structure of the product, and all the products having the same or similar technical solutions as the present invention fall within the protection scope of the present invention.

Claims

1. An electric safety screwdriver comprises an insulating shell, an insulating end cover and a conductive cutter bar, and is characterized in that the insulating shell comprises a containing cavity and a fixing hole communicated with the containing cavity, the tail part of the conductive cutter bar is fixed in the fixing hole, a voltage testing control board is arranged in the containing cavity and comprises a voltage testing circuit, a battery, an LED lamp and an elastic conductive piece, the insulating end cover is fixedly covered on an opening of the containing cavity on the insulating shell, and the battery is connected with a power supply end which is used for supplying power to the LED lamp on the voltage testing circuit; the LED lamp is electrically connected to a power test signal output end of the power test circuit; the elastic conductive piece is electrically connected to the electricity testing detection end of the electricity testing circuit and is positioned at the lower end of the electricity testing control board; the top pressing part of the insulating end cover presses the upper end of the electricity testing control board or the battery so that the lower end of the elastic conductive piece is arranged in the fixing hole and then abutted against the tail part of the conductive cutter bar; at least one of the insulating shell and the insulating end cover is made of light-transmitting materials, so that a light source emitted by the LED lamp can penetrate out through at least one of the insulating shell and the insulating end cover.

2. The electric safety screwdriver as claimed in claim 1, wherein the inner wall of the accommodating cavity is provided with two oppositely arranged clamping grooves, and two opposite sides of the test voltage control board are respectively clamped in the two clamping grooves.

3. The electric safety screwdriver as claimed in claim 2, wherein the insulating sleeve is fixed on the shaft of the conductive screwdriver rod in a covering manner.

4. The electric safety screwdriver as claimed in claim 3, wherein the pressing portion comprises a positioning sleeve formed on the edge of the opening of the insulating end cover, the positioning sleeve is arranged inside the opening of the accommodating cavity and presses the upper end of the test voltage control board or the battery, and the outer wall of the positioning sleeve is attached to the inner wall of the accommodating cavity.

5. The electric safety screwdriver as claimed in claim 4, wherein the inner wall of the insulating end cap is formed with a connecting sleeve and a counter bore communicated with the connecting hole in the connecting sleeve, the inner wall of the accommodating cavity is formed with a connecting post, the connecting post is formed with a threaded hole corresponding to the counter bore, a bolt is inserted into the counter bore, and the bolt is threaded with the threaded hole after penetrating through the connecting hole, so that the insulating end cap is fixed on the insulating shell.

6. The electric safety screwdriver as claimed in any one of claims 1 to 5, wherein the elastic conductive member is a V-shaped metal wire or a V-shaped metal sheet or a metal coil spring.

7. The safe screw driver of any one of claims 1-5, wherein the test circuit comprises a resistor R1, a resistor R2, a transistor Q1, a transistor Q2 and a battery, one end of the resistor R1 is connected to the base of the transistor Q1, the other end of the resistor R1 is connected to the base of the transistor Q1 as a test detection end, the emitter of the base of the transistor Q1 is connected to the base of the transistor Q2, the collector of the transistor Q1 is connected to one end of the resistor R2, the other end of the resistor R2 is respectively connected to the positive pole of the LED lamp and the positive pole of the battery, the collector of the transistor Q2 is connected to the negative pole of the LED lamp, and the emitter of the transistor Q2 is connected to the negative pole of the battery.

8. The electric safety screwdriver as claimed in claim 7, further comprising a Y-shaped conductive plate, wherein the two inclined ends of the Y-shaped conductive plate are fixed on the test control board and connected to the other end of the resistor R2, the battery is clamped between the conductive surface of the test control board and the Y-shaped conductive plate, and the conductive surface of the test control board is connected to the emitter of the transistor Q2.