CN106938451B - A kind of restriction torsion-type screwdriver - Google Patents
A kind of restriction torsion-type screwdriver Download PDFInfo
- Publication number
- CN106938451B CN106938451B CN201710323307.9A CN201710323307A CN106938451B CN 106938451 B CN106938451 B CN 106938451B CN 201710323307 A CN201710323307 A CN 201710323307A CN 106938451 B CN106938451 B CN 106938451B
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- CN
- China
- Prior art keywords
- screwdriver
- gear piece
- sleeve
- screw driver
- driver handle
- Prior art date
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B17/00—Hand-driven gear-operated wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a kind of restriction torsion-type screwdrivers, including rotatable screwdriver lid, screw driver handle, the first sleeve, second sleeve, limiter transmission component and screwdriver bit, the screwdriver lid is connected and fixed with the screw driver handle, one end of first sleeve is sheathed on the screw driver handle, and the other end is connect with second casing threads；The limiter transmission component is set in first sleeve and the second sleeve, including Hookean spring, intermeshing gear piece and lower gear piece, lock screw and screwdriver bit fixed seat, the gear piece are sheathed on the screw driver handle；One end of the Hookean spring is fixed on the screw driver handle, and the other end offsets with the gear piece；One end of the lock screw and the bottom of the lower gear piece are fastened, and the other end is fastened with the screwdriver bit fixed seat；The screwdriver bit tail portion penetrates in the second sleeve and is mutually fixed with the screwdriver bit fixed seat.The present invention effectively prevent screwdriver torsion excess load in turn result in equipment damage.
Description
Technical field
The present invention relates to portable power tools fields, more particularly to a kind of restriction torsion-type screwdriver.
Background technology
Screwdriver is essential tool in people's daily life and work.Currently, screwdriver is in many cases still
Used by manual rotation, but user is due to experience difference, manual rotational force degree size is grasped it is bad, slightly accidentally
May be firmly excessive, the damage of screw or mainboard is caused, especially for small micro- essence such as cell phone mainboard or smallclothes circuit board
Subclass electronic product, dynamics control bad overexert and are easy to cause the damage of equipment, virtually improve rejection rate, Jin Erzeng
Cost is added.In addition, screwdriver bit itself also can be because of excessive loss of exerting oneself.
Invention content
The invention mainly solves the technical problem of providing a kind of restriction torsion-type screwdrivers, using Hookean spring and transmission
The limiters transmission component adjusting screw knife outputting torsion size such as gear, effectively prevent screwdriver in use because overexerting
It forms torsion excess load and in turn results in equipment damage.
In order to solve the above technical problems, one aspect of the present invention is：A kind of restriction torsion-type screwdriver, packet
Include rotatable screwdriver lid, screw driver handle, the first sleeve, second sleeve, limiter transmission component and screwdriver bit, the spiral shell
Silk knife lid is connected and fixed with the screw driver handle, and one end of first sleeve is sheathed on the screw driver handle, another
End is threadedly coupled with the second sleeve；The limiter transmission component is set in first sleeve and the second sleeve, packet
Hookean spring, gear piece, lower gear piece, lock screw and screwdriver bit fixed seat are included, institute is fixed in one end of the Hookean spring
It states on screw driver handle, the other end offsets with the gear piece；The bottom of the gear piece is sheathed on the screwdriver hand
On handle, the gear piece and the lower gear piece one way engagement；The bottom of one end of the lock screw and the lower gear piece
Portion is fastened, and the other end is fastened with the screwdriver bit fixed seat；The tail portion of the screwdriver bit penetrates in the second sleeve simultaneously
It is mutually fixed with the screwdriver bit fixed seat；Wherein, when the screw driver handle rotates, one end stress of the Hookean spring is reversed,
The other end applies pressure to the gear piece, and the gear piece is meshed transmission with the lower gear piece, and then drive institute
State screwdriver bit rotation；When the torsion of the screw driver handle is more than the torque range of the Hookean spring, the linear bullet
Spring follows the string and shrinks, and the gear piece is separated with the lower gear piece, so that the screwdriver bit can not have
Effect rotation.
Preferably, the other end of the screw driver handle be equipped with integrally formed Step Shaft, including first step shaft part and
The bottom of second step shaft part, the second step shaft part is equipped with pin hole.
Preferably, the restriction torsion-type screwdriver further comprises rotating bolt, and the Hookean spring is sheathed on described
Second step shaft part, the rotation bolt pass through the pin hole and are abutted against with one end of the Hookean spring.
Preferably, the torque range of the Hookean spring is preferably 1.5-2.5kg.
Preferably, the bottom of the gear piece is sheathed on the second step shaft part, the bottom of the lower gear piece
It is fastened with one end of the lock screw.
Preferably, the material of the gear piece and the lower gear piece is plastic cement or metal.
Preferably, first sleeve includes that integrally formed threaded portion and first hold portion；The second sleeve includes one
Portion is held in body formed cutter head portion and second, and the described second inner wall for holding portion is equipped with internal thread, and described second holds portion and described first
The threaded portion of sleeve is spirally connected fixation.
Preferably, it described first holds portion and described second holds and be equipped with anti-skid plastic shell on the outer wall in portion.
Preferably, the screwdriver bit fixed seat includes integrally formed first connecting portion and second connecting portion, and described first connects
The top of socket part is equipped with locking hole, and the tail portion of the screwdriver bit is inserted into mutually tight with the first connecting portion in the locking hole
Gu；The bottom end of the second connecting portion is equipped with card slot, and the screwdriver bit fixed seat is mutually tight by the card slot and the lock screw
Gu.
The beneficial effects of the invention are as follows：The case where being different from the prior art, restriction torsion-type screwdriver of the invention pass through
Using the limiters transmission component adjusting screw knife outputting torsion size such as Hookean spring and transmission gear, screwdriver is effectively prevent to make
With to form torsion excess load because overexerting in the process and in turn result in equipment damage, have that simple in structure, cost is relatively low and uses
The features such as facilitating.
Description of the drawings
Fig. 1 is a kind of overall structure figure of one embodiment of restriction torsion-type screwdriver of the present invention；
Fig. 2 is a kind of detonation configuration figure of one embodiment of restriction torsion-type screwdriver of the present invention.
Specific implementation mode
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
It please referring to Fig.1 and Fig. 2, the present invention provides a kind of restriction torsion-type screwdriver, including rotatable screwdriver lid 1,
Screw driver handle 2, the first sleeve 3, second sleeve 4, limiter transmission component 5 and screwdriver bit 6, screwdriver lid 1 and screwdriver hand
Handle 2 connects and fixes, and one end of the first sleeve 3 is sheathed on screw driver handle 2, and the other end is threadedly coupled with second sleeve 4；Limiter
Transmission component 5 is set in the first sleeve 3 and second sleeve 4, including Hookean spring 501, gear piece 502, lower gear piece 503,
Screw driver handle 2, the other end and gear are fixed in one end of lock screw 504 and screwdriver bit fixed seat 505, Hookean spring 501
Piece 502 offsets；The bottom of gear piece 502 is sheathed on screw driver handle 2, and gear piece 502 is unidirectionally nibbled with lower gear piece 503
It closes；One end of lock screw 504 and the bottom of lower gear piece 503 are fastened, and the other end is fastened with screwdriver bit fixed seat 505；Spiral shell
The tail portion of silk screwdriver bit 6 penetrates in second sleeve 4 and is fixed with 505 phase of screwdriver bit fixed seat；Wherein, when the rotation of screw driver handle 2, line
Property spring 501 the torsion of one end stress, the other end applies pressure, gear piece 502 and lower gear piece 503 to gear piece 502
Be meshed transmission, and then screwdriver bit 6 is driven to rotate；When the torsion of screw driver handle 2 is more than the torque range of Hookean spring 501
When, Hookean spring 501 follows the string and shrinks, and gear piece 502 is separated with lower gear piece 503, so that screwdriver bit 6
It can not effectively rotate.
Referring to Fig. 2, in the present invention, rolling bearing 7, rolling bearing are equipped between screwdriver lid 1 and screw driver handle 2
7 are rotatablely connected with screwdriver lid 1 and are fastened with one end of screw driver handle 2.The other end of screw driver handle 2 be equipped with one at
The bottom of the Step Shaft of type, including first step shaft part 201 and second step shaft part 202, second step shaft part 202 is equipped with pin hole
202a.Torsion-type screwdriver is limited to further comprise rotating bolt 506, Hookean spring 501 is sheathed on second step shaft part 202,
Rotation bolt 506 passes through pin hole 202a and is abutted against with one end of Hookean spring 501.In the present embodiment, Hookean spring 501
Torque range is 1.5-2.5kg.
Please continue to refer to Fig. 2, in the present invention, the bottom of gear piece 502 is sheathed on second step shaft part 202, under
The bottom of gear sheet 503 and one end of lock screw 504 are fastened.In the present embodiment, gear piece 502 and lower gear piece
503 material is plastic cement or metal, it is however preferred to have toughness is strong, hardness height, on-deformable metal material.
As shown in Figures 1 and 2, in the present invention, the first sleeve 3 includes that integrally formed threaded portion 301 and first hold portion
302；Second sleeve 4 includes integrally formed cutter head portion 401 and second holds portion 402, and the second inner wall for holding portion 402 is equipped with interior spiral shell
Line, the second threaded portion 301 for holding portion 402 and the first sleeve 3 are spirally connected fixation.In the present invention, it first holds portion 302 and second holds portion
It is equipped with anti-skid plastic shell on 402 outer wall, on the one hand protects the first sleeve 3 and second sleeve 4, it is on the other hand easy to use
Person, which is held first when using screwdriver and holds portion 302 or the second, holds portion 402, and increasing friction force prevents from skidding.
As shown in Fig. 2, in the present invention, screwdriver bit fixed seat 505 includes integrally formed first connecting portion 505a and second
The top of interconnecting piece 505b, first connecting portion 505a are equipped with locking hole 505a1, and locking hole 505a1 is inserted into the tail portion of screwdriver bit 6
In be fastened with first connecting portion 505a；The bottom end of second connecting portion 505b is equipped with card slot (not shown), screwdriver bit fixed seat 505
It is fastened by card slot and lock screw 504.
Please continue to refer to Fig. 1, a kind of course of work limiting torsion-type screwdriver of the present invention is as follows：
When restriction torsion-type screwdriver of the user using the present invention, user only need to be by the screwdriver bit 6 of screwdriver
It is aligned on screw to be twisted, adjusts bit rotary screwdriver lid 1, screw driver handle 2 rotates with so that Hookean spring 501 is close to second
One end of step shaft part 202 is pressed under the action of rotating bolt 506 on second step shaft part 202, and Hookean spring 501 is opened
Begin to extend and reverse, the other end of Hookean spring 501 applies pressure to the gear piece 502 being set on second step shaft part 202
Power so that gear piece 502 is meshed with lower gear piece 503, and then drives lock screw 504, screwdriver bit fixed seat 505 and screw
Screwdriver bit 6 rotates, and user is ultimately transferred to screwdriver bit 6 to the torsion of screwdriver lid 1 and then is applied on screw to be twisted.
Wherein, screwdriver bit 6 is treated the torque magnitude of stubborn screw and can be controlled by adjusting screw knife lid 1, bit rotary screwdriver lid 1 so that
Hookean spring 501 is changed by the pressure of second step shaft part 202, the pressure for the Hookean spring 501 that gear piece 502 is subject to
Power also changes correspondingly, and finally, the torsion that screwdriver bit 6 treats stubborn screw also changes.Wherein, in the present invention, linear bullet
The torque range of spring 501 is 1.5-2.5kg.When user's bit rotary screwdriver lid 1 overcomes the torsion of Hookean spring 501 to be more than linearly
When the torque range of spring 501, Hookean spring 501 follows the string and shrinks, and gear piece 502 is separated with lower gear piece 503,
It no longer engages, user can not be transmitted to screwdriver bit 6 to the torsion of screwdriver lid 1, and therefore, screwdriver bit 6 can not effectively turn
It is dynamic, it avoids and waits for peaceful screw and its mainboard because torsion is excessive and impaired.In addition, need to only unscrew screw without ensure screw and
Under the occasion that its mainboard does not damage or when screwdriver lid 1 and Hookean spring 501 damage, user can also directly be held in first and hold
Portion 302 or the second, which is held, rotates the first sleeve 3 and second sleeve 4 in portion 402, so that screwdriver bit 6 twists, at this point,
Screwdriver bit 6 treat the torsion of the turn of the screw there is no limit.
In addition, in a preferred embodiment of the invention, the torque range of Hookean spring selects 1.5-2.5kg, is suitable for hand
The repair of the equipment such as mainboard or smallclothes circuit board.In other embodiments, it is related to other electronic product mainboards or component
The torque range of repair, Hookean spring can be depending on the specific application scenario of screwdriver, and user selects torsion greater or lesser
Different model screwdriver, these those skilled in the art understand that in the range of, so repeating no more.
The restriction torsion-type screwdriver of the present invention is adjusted by using the limiters transmission component such as Hookean spring and transmission gear
Screwdriver outputting torsion size effectively prevent screwdriver to form torsion excess load because overexerting in use and in turn result in
Equipment damage has the characteristics that simple in structure, cost is relatively low and easy to use.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of restriction torsion-type screwdriver, which is characterized in that including rotatable screwdriver lid, screw driver handle, first set
Cylinder, second sleeve, limiter transmission component and screwdriver bit, the screwdriver lid is connected and fixed with the screw driver handle, described
One end of first sleeve is sheathed on the screw driver handle, and the other end is threadedly coupled with the second sleeve；The limiter passes
Dynamic component is set in first sleeve and the second sleeve, including Hookean spring, gear piece, lower gear piece, rotation are inserted
Pin, lock screw and screwdriver bit fixed seat, one end of the Hookean spring are fixed on the screw driver handle, the other end with it is described
Gear piece offsets；The bottom of the gear piece is sheathed on the screw driver handle, the gear piece and the lower tooth
Take turns piece one way engagement；One end of the lock screw and the bottom of the lower gear piece are fastened, and the other end is solid with the screwdriver bit
Reservation is fastened；The tail portion of the screwdriver bit penetrates in the second sleeve and is mutually fixed with the screwdriver bit fixed seat；It is described
Rolling bearing is equipped between screwdriver lid and the screw driver handle, the rolling bearing is rotatablely connected simultaneously with the screwdriver lid
It is fastened with one end of the screw driver handle；The other end of the screw driver handle is equipped with integrally formed Step Shaft, including
The bottom of first step shaft part and second step shaft part, the second step shaft part is equipped with pin hole；The Hookean spring is sheathed on
The second step shaft part, the rotation bolt pass through the pin hole and are abutted against with one end of the Hookean spring；Wherein, when
The screw driver handle rotation, one end stress torsion of the Hookean spring, the other end apply pressure, institute to the gear piece
It states gear piece to be meshed with the lower gear piece transmission, and then drives the screwdriver bit rotation；When the screw driver handle
Torsion be more than the Hookean spring torque range when, the Hookean spring follows the string and shrinks, the gear piece with
The lower gear piece is separated, so that the screwdriver bit can not be effectively driven；The torque range of the Hookean spring is
1.5-2.5kg。
2. restriction torsion-type screwdriver according to claim 1, which is characterized in that the bottom of the gear piece is sheathed on
On the second step shaft part, the bottom and one end of the lock screw of the lower gear piece are fastened.
3. restriction torsion-type screwdriver according to claim 1, which is characterized in that the gear piece and the lower gear
The material of piece is plastic cement or metal.
4. restriction torsion-type screwdriver according to claim 1, which is characterized in that first sleeve includes being integrally formed
Threaded portion and first hold portion；The second sleeve includes integrally formed cutter head portion and second holds portion, and described second holds portion
Inner wall is equipped with internal thread, and the described second threaded portion for holding portion and first sleeve is spirally connected fixation.
5. restriction torsion-type screwdriver according to claim 4, which is characterized in that described first holds portion and described second hold
Anti-skid plastic shell is equipped on the outer wall in portion.
6. restriction torsion-type screwdriver according to claim 1, which is characterized in that the screwdriver bit fixed seat include one at
The top of the first connecting portion and second connecting portion of type, the first connecting portion is equipped with locking hole, the tail portion of the screwdriver bit
It is inserted into the locking hole and is fastened with the first connecting portion；The bottom of the second connecting portion is equipped with card slot, the screwdriver bit
Fixed seat is fastened by the card slot and the lock screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710323307.9A CN106938451B (en) | 2017-05-09 | 2017-05-09 | A kind of restriction torsion-type screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710323307.9A CN106938451B (en) | 2017-05-09 | 2017-05-09 | A kind of restriction torsion-type screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106938451A CN106938451A (en) | 2017-07-11 |
| CN106938451B true CN106938451B (en) | 2018-08-03 |
Family
ID=59463562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710323307.9A Active CN106938451B (en) | 2017-05-09 | 2017-05-09 | A kind of restriction torsion-type screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106938451B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746298A (en) * | 1996-07-19 | 1998-05-05 | Snap-On Technologies, Inc. | Adjustable torque-limiting mini screwdriver |
| CN2309926Y (en) * | 1997-06-28 | 1999-03-10 | 林庆洲 | Vernier control structure for screwdriver |
| US7243581B1 (en) * | 2006-06-20 | 2007-07-17 | Bradshaw Medical | Fixed torque limiting driver |
| CN101058172A (en) * | 2006-04-19 | 2007-10-24 | 胡厚飞 | Ratchet bottle opener with more rotary speed |
| CN202147246U (en) * | 2011-06-27 | 2012-02-22 | 东莞乐域塑胶电子制品有限公司 | Force-limiting screwdriver |
| CN203600140U (en) * | 2013-11-01 | 2014-05-21 | 中山市奥博包装材料制品有限公司 | Novel wrench with adjustable torque |
| CN204019479U (en) * | 2014-07-15 | 2014-12-17 | 湖北旭扬工贸有限公司 | A kind ofly move back the removal tool special that bolt is used |
| CN206702906U (en) * | 2017-05-09 | 2017-12-05 | 深圳市博尔睿电子科技有限公司 | One kind limits torsion-type screwdriver |
-
2017
- 2017-05-09 CN CN201710323307.9A patent/CN106938451B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746298A (en) * | 1996-07-19 | 1998-05-05 | Snap-On Technologies, Inc. | Adjustable torque-limiting mini screwdriver |
| CN2309926Y (en) * | 1997-06-28 | 1999-03-10 | 林庆洲 | Vernier control structure for screwdriver |
| CN101058172A (en) * | 2006-04-19 | 2007-10-24 | 胡厚飞 | Ratchet bottle opener with more rotary speed |
| US7243581B1 (en) * | 2006-06-20 | 2007-07-17 | Bradshaw Medical | Fixed torque limiting driver |
| CN202147246U (en) * | 2011-06-27 | 2012-02-22 | 东莞乐域塑胶电子制品有限公司 | Force-limiting screwdriver |
| CN203600140U (en) * | 2013-11-01 | 2014-05-21 | 中山市奥博包装材料制品有限公司 | Novel wrench with adjustable torque |
| CN204019479U (en) * | 2014-07-15 | 2014-12-17 | 湖北旭扬工贸有限公司 | A kind ofly move back the removal tool special that bolt is used |
| CN206702906U (en) * | 2017-05-09 | 2017-12-05 | 深圳市博尔睿电子科技有限公司 | One kind limits torsion-type screwdriver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106938451A (en) | 2017-07-11 |
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