CN2626128Y - Stepped regulating electric tool switch - Google Patents

Stepped regulating electric tool switch Download PDF

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Publication number
CN2626128Y
CN2626128Y CN 03243560 CN03243560U CN2626128Y CN 2626128 Y CN2626128 Y CN 2626128Y CN 03243560 CN03243560 CN 03243560 CN 03243560 U CN03243560 U CN 03243560U CN 2626128 Y CN2626128 Y CN 2626128Y
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CN
China
Prior art keywords
group
utility
electric tool
model
switch
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 03243560
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Chinese (zh)
Inventor
沈新权
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Individual
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Individual
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Priority to CN 03243560 priority Critical patent/CN2626128Y/en
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Publication of CN2626128Y publication Critical patent/CN2626128Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an electric tool switch with stepping adjustment, which comprises a shell body, an adjustive handle, a connecting rod, a circuitry board and a switch circuit, the utility model is characterized in that the electric tool switch also comprises a resistance group arranged on the circuitry board, a conductive strip, an electrode group and a brush arranged on the connecting rod and contacted with the conductive strip and the electrode group in a sliding way, the resistance group a plurality of stationary resistors in series, the electrode group is formed by the mutually distant arrangement of a plurality of electrodes which are electrically connected with the derivation nodes of two ends of each resistor, the conductive strip is electrically connected with one end of the resistance group, two ends of the resistance group are connected with the switch circuit. The utility model changes the resistance value of a connecting switch circuit by adjusting the gliding contacting position of the brush on the conductive strip and the electrode group, the purpose of the stepping adjustment is achieved, the utility model preferably solves the problems that the existing potentiometer timing switch has short service life and poor operating stability, etc, thus, the utility model is an ideal electric tool timing switch.

Description

The electric tool switch that stepping is regulated
One, technical field
The utility model relates to the electric tool switch that a kind of stepping is regulated.
Two, background technology
The general stepless time adjustment mode that adopts during existing electric tool switch speed governing, this mode of speed regulation is to realize by the potentiometer resistance in the by-pass cock, potentiometer then slides on a ribbon resistance film by its metal moving contact and changes resistance, because the metal moving contact slidably reciprocates on resistive film continually, make resistive film wearing and tearing even worn out easily, thereby cause the adjusting function of switch to descend, shorten useful life.In addition, in order to keep good contact the between metal moving contact and the resistive film, often can't apply overcoat on the resistive film, therefore, when ambient temperature, when humidity changes, the change in resistance of resistive film is bigger, and the resistance adjustable range of potentiometer is changed, thereby the speed adjustable range of switch is a greater impact, and the job stability of switch is relatively poor.
Three, summary of the invention
At the problems referred to above, it is longer that the purpose of this utility model provides a kind of useful life, the electric tool switch that the stepping of better working stability is regulated.
Order of the present utility model is realized as follows: the electric tool switch that a kind of stepping is regulated, it comprises housing (5), be located at the release handle (4) of housing top, be connected with release handle and extend to connecting rod (2) in the housing, be located at wiring board (1) and switching circuit in the housing, its main points are that it also comprises the resistor group (6) that is located on the wiring board (1), bus (7), electrode group (8), and be located at that connecting rod (2) is gone up and can with the brush (3) of bus (7) and electrode group (8) sliding contact, wherein resistor group (6) is made up of the fixed resistor of some series connection, electrode group (8) is by arranging and form with the some electrodes space that node is electrically connected of drawing at each fixed resistor two ends, bus (7) is electrically connected with an end of resistor group (6), and two terminations of resistor group (6) are gone into switching circuit.
Brush of the present utility model (3) adopts metal material to make.
In the utility model, go up slide realization by brush (3) at bus (7) and electrode group (8) owing to regulate resistance, sliding contact between brush (3) and bus (7) and the electrode group (8) is difficult for causing wearing and tearing, so prolonged the useful life of switch greatly.In addition, be fixed resistor owing to what adopt in the resistor group (6), thus can on each fixed resistor, apply overcoat, so the variation of environment is very little to its influence, can make the service behaviour of switch keep stable.
Four, drawing explanation
Fig. 1 is a structural representation of the present utility model.Among the figure: 1 expression wiring board; 2 expression connecting rods; 3 expression brushes; 4 expression release handles; 5 expression housings.
Fig. 2 is that the A of Fig. 1 is to structural representation.
Fig. 3 is the planar structure schematic diagram of wiring board of the present utility model (1).Among the figure: 6 expression resistor group; 7 expression buss; 8 expression electrode groups.
Fig. 4 is a switching circuit schematic diagram of the present utility model.
Five, embodiment
Below with reference to accompanying drawing the utility model is further described.
As Fig. 1, shown in Figure 2, the electric tool switch that stepping is regulated has housing (5), there is a release handle (4) the housing top, one connecting rod (2) that extends in the housing is arranged under the release handle, side in the housing has a printed substrate (1) that is provided with switching circuit, as Fig. 3, shown in Figure 4, also be provided with the resistor group of forming by the fixed resistor of some series connection (6) on the printed substrate (1), also be printed with bus (7) and electrode group (8) on the printed substrate (1), connecting rod (2) bottom have one can with the brush (3) of bus (7) and electrode group (8) sliding contact, each electrode in the electrode group (8) is electrically connected with the lead-out wire at each fixed resistor two ends in the resistor group (6), bus (7) is electrically connected with resistor group (6) one ends, and switching circuit is inserted at resistor group (6) two ends.When pressing release handle (4), bus (7) and the electrode group (8) of brush (3) on release handle (4) drivening rod (2) on wiring board (1) goes up slip, and when the electrode of diverse location contacts in brush (3) and the electrode group (8), the resistance that inserts the resistor group (6) in the switching circuit has nothing in common with each other, at this moment, the output voltage of switching circuit output also has nothing in common with each other, thereby realizes the purpose that stepping is regulated.

Claims (2)

1, the electric tool switch that a kind of stepping is regulated, it comprises housing (5), be located at the release handle (4) of housing top, be connected with release handle and extend to connecting rod (2) in the housing, be located at wiring board (1) and switching circuit in the housing, it is characterized in that it also comprises the resistor group (6) that is located on the wiring board (1), bus (7), electrode group (8), and be located at that connecting rod (2) is gone up and can with the brush (3) of bus (7) and electrode group (8) sliding contact, wherein resistor group (6) is made up of the fixed resistor of some series connection, electrode group (8) is by arranging and form with the some electrodes space that node is electrically connected of drawing at each fixed resistor two ends, bus (7) is electrically connected with an end of resistor group (6), and two terminations of resistor group (6) are gone into switching circuit.
2, the electric tool switch of stepping adjusting according to claim 1 is characterized in that brush (3) adopts metal material to make.
CN 03243560 2003-03-28 2003-03-28 Stepped regulating electric tool switch Expired - Fee Related CN2626128Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03243560 CN2626128Y (en) 2003-03-28 2003-03-28 Stepped regulating electric tool switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03243560 CN2626128Y (en) 2003-03-28 2003-03-28 Stepped regulating electric tool switch

Publications (1)

Publication Number Publication Date
CN2626128Y true CN2626128Y (en) 2004-07-14

Family

ID=34250917

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03243560 Expired - Fee Related CN2626128Y (en) 2003-03-28 2003-03-28 Stepped regulating electric tool switch

Country Status (1)

Country Link
CN (1) CN2626128Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927481A (en) * 2009-06-23 2010-12-29 罗伯特.博世有限公司 Electric tools
CN103252759A (en) * 2012-02-15 2013-08-21 喜利得股份公司 Hand-held tool equipment
CN110098076A (en) * 2019-05-24 2019-08-06 科都电气有限公司 One kind pressing switch and electric tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927481A (en) * 2009-06-23 2010-12-29 罗伯特.博世有限公司 Electric tools
CN103252759A (en) * 2012-02-15 2013-08-21 喜利得股份公司 Hand-held tool equipment
CN103252759B (en) * 2012-02-15 2016-06-22 喜利得股份公司 Hand-held tool equipment
US9597788B2 (en) 2012-02-15 2017-03-21 Hilti Aktiengesellschaft Handheld power tool
CN110098076A (en) * 2019-05-24 2019-08-06 科都电气有限公司 One kind pressing switch and electric tool

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Zhejiang Heling Electric Co., Ltd.

Assignor: Shen Xinquan

Contract fulfillment period: 2008.2.18 to 2013.3.27

Contract record no.: 2009330001268

Denomination of utility model: Stepped regulating electric tool switch

Granted publication date: 20040714

License type: Exclusive license

Record date: 20090603

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.2.18 TO 2013.3.27; CHANGE OF CONTRACT

Name of requester: ZHEJIANG HELING ELECTRICITY CO.,LTD.

Effective date: 20090603

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20040714

Termination date: 20100328