CN102113185B - Cord protector for power tools - Google Patents

Cord protector for power tools Download PDF

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Publication number
CN102113185B
CN102113185B CN200980129892.2A CN200980129892A CN102113185B CN 102113185 B CN102113185 B CN 102113185B CN 200980129892 A CN200980129892 A CN 200980129892A CN 102113185 B CN102113185 B CN 102113185B
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CN
China
Prior art keywords
power line
line
shell
electric tool
biasing member
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.)
Expired - Fee Related
Application number
CN200980129892.2A
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Chinese (zh)
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CN102113185A (en
Inventor
瓦伦·A·切罗
丹尼尔·普齐奥
罗伯特·S·格雷特
理查德·C·尼克尔斯
詹姆斯·R·帕克斯
斯科特·鲁道夫
罗伯特·J·奥西托斯
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Black and Decker Inc
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Black and Decker Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US12/164,650 external-priority patent/US8348695B2/en
Priority claimed from US12/164,621 external-priority patent/US8035955B2/en
Priority claimed from US12/164,584 external-priority patent/US7727003B2/en
Application filed by Black and Decker Inc filed Critical Black and Decker Inc
Publication of CN102113185A publication Critical patent/CN102113185A/en
Application granted granted Critical
Publication of CN102113185B publication Critical patent/CN102113185B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02Construction of casings, bodies or handles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5833Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being forced in a tortuous or curved path, e.g. knots in cable

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Springs (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)

Abstract

Provided is a power tool having a housing, a motor disposed in the housing, a power cord connected to the motor, and a cord protector operably engaging the power cord for movement therewith. The cord protector can comprise at least one elastically-deformable biasing member engaging the power cord and exerting a biasing force upon the power cord in response to a load being applied to the power cord and recovering to an initial position in response to removal of the load.

Description

Line protector for electric tool
The cross reference of related application
The application is the U. S. application No.12/164 submitted on June 30th, 2008,584, the U. S. application No.12/164 submitted on June 30th, 2008, the U. S. application No.12/164 that on June 30th, 621 and 2008 submits, 650 PCT international application, each in described U. S. application is all the U. S. application No.11/860 that submit on September 25th, 2007, the continuation of 989 part, and this U. S. application No.11/860,989 have required the U.S. Provisional Application No.60/863 submitted on October 30th, 2006,467 priority.These apply for that disclosed content is incorporated herein by reference.
Technical field
The disclosure relates to the various improvement for electric tool, and is particularly related to line external member load protector.
Background and summary of the invention
Only provide and relate to background information of the present disclosure and may not form prior art in the statement of this part.
The common field failure relevant with the heavier portable power tool such as protable saw is owing to being applied to separating of power line that shock loading on line or jerk cause and instrument.When instrument falls and when simultaneously the plug end of power line is fixed, or when the user by holding power line handbarrow or instrument is dropped to another layer or when descending along ladder from one deck, occur separating of this power line and instrument.
For by power line conductor or junction and the large active force isolation that applies because jerking power line; be arranged in tool outer casing according to power line of the present disclosure, and there is little maintenance ring or extra cable length between the part of the static line protector of wire holder and tool outer casing.Compression bonding apparatus next-door neighbour line protector is arranged on the power line cable.When line bears jerk, cable moves axially with respect to the line protector.When cable moves, the external part of compression bonding apparatus compressed lines protector, be delivered to line external member conductor in the enclosure of layout or the power of junction thereby absorb energy and minimizing.
From description provided herein, it is obvious that other application will become.Should be appreciated that, these describe and concrete example only for purposes of illustration but not be intended to limit the scope of the present disclosure.
The accompanying drawing explanation
Accompanying drawing described herein is the purpose for illustrating only, and is intended to absolutely not limit the scope of the present disclosure.
Fig. 1 is the stereogram according to the exemplary worm-drive saw with the instrument hanger of disclosure principle;
Fig. 2 illustrates according to the line external member of disclosure principle to load protector in there is no the sectional view of load situation;
Fig. 3 is the figure that is similar to Fig. 2, and wherein load is applied to line;
Fig. 4 is the stereogram of the exemplary wire holder used together with line external member according to disclosure principle load protector;
Fig. 5 is the stereogram of the first fixture halfbody;
Fig. 6 is the stereogram of the second fixture halfbody;
Fig. 7 is according to the stereogram of the line external member load protector design of some execution modes, wherein for illustrative purpose, partly removes handle;
Fig. 8 has the stereogram of the line external member load protector design of snakelike pattern according to some execution modes;
Fig. 9 is the front view according to the external member of the line in the initial position load protector design of Fig. 8;
Figure 10 is the front view according to the external member of the line in the deviation post load protector design of Fig. 8;
Figure 11 is the stereogram according to the line external member load protector design with fish plate of some execution modes;
Figure 12 is the front view according to the external member of the line in the initial position load protector design of Figure 11;
Figure 13 is the front view according to the external member of the line in the deviation post load protector design of Figure 11;
Figure 14 has the front view of the external member of the line in the initial position load protector design of fish plate according to some execution modes;
Figure 15 is the front view according to the external member of the line in the deviation post load protector design of Figure 14;
Figure 16 has the stereogram of line external member load protector design of the biasing member of inside location according to some execution modes;
Figure 17 is the front view according to the external member of the line in the initial position load protector design of Figure 16;
Figure 18 is the front view according to the external member of the line in the deviation post load protector design of Figure 16;
Figure 19 is the front view according to the external member of the line in the initial position load protector design of some execution modes;
Figure 20 is the front view according to the external member of the line in the deviation post load protector design of Figure 19;
Figure 21 is the front view according to the external member of the line in the initial position load protector design of some execution modes;
Figure 22 is the front view according to the external member of the line in the deviation post load protector design of Figure 21;
Figure 23 has the front view of the external member of the line in the initial position load protector design of extension spring according to some execution modes;
Figure 24 is the front view according to the external member of the line in the deviation post load protector design of Figure 23;
Figure 25 has the front view of the external member of the line in the initial position load protector design of extension spring according to some execution modes;
Figure 26 is the front view according to the external member of the line in the deviation post load protector design of Figure 25;
Figure 27 has the front view of the external member of the line in the initial position load protector design of sheet spring according to some execution modes;
Figure 28 is the front view according to the external member of the line in the deviation post load protector design of Figure 27;
Figure 29 has the front view of the external member of the line in the initial position load protector design of torque spring according to some execution modes;
Figure 30 is the front view according to the external member of the line in the deviation post load protector design of Figure 29;
Figure 31 is the amplification stereogram of the biasing member of Figure 29;
Figure 32 has the front view of the external member of the line in the initial position load protector design of tether system according to some execution modes;
Figure 33 is the front view according to the external member of the line in the deviation post load protector design of Figure 32;
Figure 34 has the front view of the external member of the line in the initial position load protector design of piston apparatus according to some execution modes;
Figure 35 is the front view according to the external member of the line in the deviation post load protector design of Figure 34;
Figure 36 has the front view of the external member of the line in the initial position load protector design of piston apparatus and hole path according to some execution modes;
Figure 37 is the front view according to the external member of the line in the deviation post load protector design of Figure 36;
Figure 38 has the front view of the external member of the line in the initial position load protector design of spring lever according to some execution modes;
Figure 39 is the front view according to the external member of the line in the deviation post load protector design of Figure 38;
Figure 40 has the front view of the external member of the line in the initial position load protector design of spring lever and secondary spring according to some execution modes;
Figure 41 is the front view according to the external member of the line in the deviation post load protector design of Figure 40;
Figure 42 has the front view of the external member of the line in the initial position load protector design of spring lever and torque spring according to some execution modes;
Figure 43 is the front view according to the external member of the line in the deviation post load protector design of Figure 42;
Figure 44 has the stereogram of the line external member load protector design of spring lever and wire holder according to some execution modes;
Figure 45 is the stereogram of spring lever;
Figure 46 is the stereogram of wire holder;
Figure 47 has the front view of the external member of the line in the initial position load protector design of spring member according to some execution modes;
Figure 48 is the front view according to the external member of the line in the deviation post load protector design of Figure 47;
Figure 49 has the front view of the external member of the line in the initial position load protector design of bias voltage medium according to some execution modes;
Figure 50 is the front view according to the external member of the line in the deviation post load protector design of Figure 49;
Figure 51 has the front view of the external member of the line in the initial position load protector design of disc spring according to some execution modes;
Figure 52 is the front view according to the external member of the line in the deviation post load protector design of Figure 51;
Figure 53 has the front view of the external member of the line in the initial position load protector design of spring lever according to some execution modes;
Figure 54 is the front view according to the external member of the line in the deviation post load protector design of Figure 53;
Figure 55 has the front view of the external member of the line in the initial position load protector design of breakaway-element connector according to some execution modes;
Figure 56 is the front view according to the external member of the line in the deviation post load protector design of Figure 55;
Figure 57 has the stereogram of the line external member load protector design of cam follower according to some execution modes;
Figure 58 is the front view according to the external member of the line in the initial position load protector design of Figure 57;
Figure 59 is the front view according to the external member of the line in the deviation post load protector design of Figure 57;
Figure 60 is the stereogram according to the line external member load protector design with the cam follower in initial position of some execution modes; And
Figure 61 is the stereogram of the external member of the line in the deviation post load protector design of Figure 60.
Embodiment
Following explanation itself is only exemplary and is not intended to limit the disclosure, its application or purposes.
With reference to Fig. 1 and 2, exemplary electrical power driven tools 10 is shown, it has line external member load protector 114, for preventing from being applied to large active force on power line 112, affects being connected of line 112 and electric tool 10.As illustrated in fig. 1, electric tool 10 comprises line 112 and the line protector 114 extended from the rear end of instrument.Line protector 114 is arranged in the recess 116 be arranged in electric power tool shell 118.The cross section of recess 116 can be square or circular, and limits the cave, chamber of the radially extending flange section 120 for receiving elastica protector 114 in recess 116.Radially extending flange section 120 arranges near shoulder section 122.Compression bonding apparatus 124 is clamped or be crimped onto on power line 112 and comprise radially extending flange section 126, and this radially extending flange section 126 arranges near the end of line protector 114 in chamber 116 inside of shell 118.Flange part 126 is arranged near the shoulder extended radially inwardly 128 that is arranged at the cave, chamber 116 in shell 118.
The mode that compression bonding apparatus 124 will be described in detail with this paper engages power line, thereby by axially and be rotatably fixed to power line 112.By being arranged on the wire holder 130 in electric tool 10, power line 112 also is clamped to tool outer casing, makes and be provided with in the enclosure extra length of cable 112a between compression bonding apparatus 124 and wire holder 130.Wire holder 130 can be installed to shell by securing member 132 or by other known fixing meanss such as riveted joint, welding, grommet.Wire holder 130 can reach several inches with recess 116 intervals.By the uniaxial stress that will be produced by deflection by line with because clamped and stress that cause on line is placed in two different positions rather than the two roughly in identical position, with respect to recess 116 further inwardly position line fixture 130 can improve line deflection durability.It has improved the flex life of conductor.
When larger power F is applied to power line 112, as shown in Figure 3, power line 112 is pulled on the axial direction of power F.Power line 112 causes compression bonding apparatus 124 to move axially with respect to shoulder section 128 with respect to the movement of shell 118, makes the flange part 120 of the flange part 126 compressed lines protectors 114 of compression bonding apparatus 124, absorbs thus the power on online 112 that applies.Compression bonding apparatus 124 is used up and is arranged on some in the extra length of cable 112a between compression bonding apparatus 124 and wire holder 130 with respect to moving axially of wire holder 130, and power can be applied on wire holder 130.
Compression bonding apparatus 124 can present various ways.As example, as shown in Fig. 4 and 6, compression bonding apparatus 124 can comprise the first fixture halfbody 136 and the second fixture halfbody 138.Each fixture halfbody 136,138 is provided with semicircle tubular body 140, and each semicircle tubular body 140 is provided with a plurality of ribs that extend radially inwardly 142, and described rib 142 is designed to engage and clamp the outer surface of power line 112.The first fixture halfbody 136 is provided with a plurality of apertures 144, and each aperture 144 is suitable for receiving and is arranged on a plurality of corresponding sealed fingers 146 on the second fixture halfbody 138.The first fixture halfbody 136 and the second fixture halfbody 138 comprise respectively radial flange portions 126a and radial flange portions 126b separately, and radial flange portions 126a, 126b limit the radially extending flange section 126 of compression bonding apparatus 124.Sealed fingers 146 is fixed to the second fixture halfbody 138 on the first fixture halfbody 136 and is in the state of pinch engagement on power line 112, to prevent that power line 112 with respect to clamping device 124 axially or motion rotatably.Should be appreciated that, according to principle of the present disclosure, other fixture or crimping configuration can be used together with this line external member load protector 110.
With reference to Fig. 7, optional line external member load protector 110 ' is shown, it comprises split type grip device 124 ', this grip device 124 ' is received in the recess 302 in handle portion 300, to prevent the assembly distortion or to be pushed in the handle external member.Split type fixture 124 ' is independent of handle external member 300 and the complete line external member 112 of trap and the secondary winding of filler wire harness.Line protector 114 ' comprises additional materials at installation end, and this additional materials prevents distortion and forms spring to absorb vibration.
In some embodiments, as shown in Fig. 8 to Figure 10, line external member load protector 110 can comprise a plurality of biasing members, for example rib, post and/or spring, and these biasing members extend in the enclosure, so that the absorption of vibrations function to be provided at least in part.Particularly, shell 118 can comprise two or more biasing members 402 of extending internally from shell 118 (for example, as three biasing members 402 that illustrate).Before the skew of biasing member 402, in biasing member 402 longitudinal axis of each can with power line 112 quadratures.Biasing member 402 can be arranged to provide the serpentine path of power line 112 through shell 118.But, should be appreciated that, can use other path configuration in the scope of this instruction.More specifically, as shown in Figure 9, biasing member 402 can be arranged such that each biasing member is with respect to axis PC bias voltage laterally.The physical characteristic of compliance that can be based on required in line external member load protector 110, the performance of power line 112 and biasing member 402 is determined the accurate amount of this bias voltage.
Should be appreciated that, biasing member/spring lever 402 can comprise for adjustment bear when load submissive response (, bias voltage distributes) feature, material or can adopt other manufacturing technology of submissive response while for adjustment, bearing load (, bias voltage distributes).For example, in some embodiments, biasing member/spring lever 402 can comprise molded components or formed parts, and the cross sectional shape of these members is non-cylindrical, for example for taper, with recess, plane and/or inhomogeneous.This cross sectional shape can provide nonlinear submissive response bearing when load, to allow in the situation that load is lighter carries out initial offset and reduce gradually skew in the situation that load is increasing.
In addition, continue with reference to Fig. 8-10, in some embodiments, the biasing member 402 of line external member load protector 110 can be made into certain size and can make to provide predetermined compliance by certain material.For example, biasing member 402 can have the diameter that is enough to make it possible to strain.Similarly, biasing member 402 can be made by the material that allows this strain.Further, can provide the combination of size and material to realize this strain.In addition, can utilize from the similar material of shell 118 or utilize different materials that biasing member 402 and shell 118 is integrally formed.
In use, if there is enough power to be applied on power line 112, relevant power antagonism biasing member 402 transmits, thereby biasing member 402 is offset on a direction, makes the degree of serpentine shaped reduce (seeing the progressive stages of Fig. 9 (unmigrated) and 10 (skews)).This skew provides power to absorb along axis PC.
With reference to Figure 23-26, should be appreciated that, biasing member 402 can comprise the spring member that operationally engages power line 112, so that the biasing force that makes power line 112 shift into snakelike configuration to be provided.In this embodiment, the biasing member 402 that comprises spring member can at one end be connected to shell 118 or other maintenance structure 408 and be connected to rotatable pulley 404 (Figure 25 and 26) or engagement member 406 (seeing Figure 23 and 24) at the other end.Rotatable pulley 404 can be used for contributing to power line 112 with respect to the unconfined translation of biasing member 402.When this translation of power line 112 hour, can use engagement member 406.The biasing member 402 that comprises spring member can comprise relative to each other different rebound degrees, to increase or to adjust required bias voltage, distributes.
In some embodiments, as shown in Figure 11-15, biasing member 402 can be the rib that extends internally of the opposite side from shell 118 and can be configured to engage be fixedly coupled to power line 112 so that the fish plate moved 410 together with power line.More specifically, fish plate 410 can comprise disk, and the size that this disk has 412,Gai aperture, aperture 412 is applicable to the power line that reception is therefrom passed.Fish plate 410 can keep in position with respect to power line 112 via butt fixture 414.In some embodiments, butt fixture 414 can comprise U-shaped main member 416, back holding plate 418 and a plurality of securing member 420, this securing member 420 for around power line 112, clamp ground connect U-shaped main members 416 with back holding plate 418 so that U-shaped main member 416 moves together with power line 112 with back holding plate 418.Should be appreciated that, the size configurations of U-shaped main member 416 becomes when butt fixture 414 is installed on power line 112 and power line 112 limits interference fit.Be also to be understood that and can use substituting butt fixture or retaining member.Be also to be understood that fish plate 410 and butt fixture 414 can by single, become whole member to form and can there are the known various shapes that can correctly engage with biasing member 402.
Still, with reference to Figure 11-15, can see that biasing member 402 can be formed a series of rib, described a series of ribs have and power line 112 plane of quadrature roughly.Biasing member 402 can be disposed on the opposite side of power line 112, or around power line 112 circumferential arrangement, to apply the line protection of balance.As described herein, the biasing member 402 of line external member load protector 110 can be had and had the dimensions and make to provide predetermined compliance by certain material.For example, biasing member 402 can have constant thickness, the thickness along its length variations, the thickness changed with respect to other biasing member, by submissive material, made or had the combination of these characteristics so that can be along predetermined bias voltage distribution strain.In addition, biasing member 402 can relative to each other be arranged so that the first biasing member skew in biasing member 402 and engage the second biasing member (by that analogy) in biasing member 402, so that compound biasing force to be provided.
In use, if there is enough power to be applied to power line 112, power line 112 translations, thus similarly by fish plate 410 and butt fixture 414 to the left side translation in figure.This translation makes fish plate 410 sequentially engage described a series of biasing member 402, and relevant power antagonism biasing member 402 transmits thus, thereby makes biasing member 402 skews.This skew provides power to absorb along axis PC.
In some embodiments, as shown in Figure 14 and 15, butt fixture 414 can comprise be connected to power line 112 in case together with power line 112 long element of motion.In this embodiment, butt fixture 414 can comprise a series of circumferential slots 422, and this circumferential slot 422 has the respective end of biasing member 402 is received in to size wherein.Like this, at power line 112, during along axis PC initial movable, each in a plurality of biasing members 402 can activated simultaneously or be offset, and the bias voltage response of substantial linear is provided thus.Butt fixture 414 can make to provide the bias voltage with respect to biasing member 402 by flexibility or elastomeric material, as shown in Figure 15.
In some embodiments, as shown in Figure 16 to Figure 18, biasing member 402 can be the rib that extends internally of the opposite side from shell 118 and can be positioned in the central portion that is formed at the ring power line 112.Namely, biasing member 402 can be formed two or more ribs, and power line 112 can pass through around rib.Biasing member 402 can have arcuate shape, and its arcuate shape fits tightly the predetermined ring radius of power line 112.Should be appreciated that, this ring radius should be through selecting in order to not excessively strain power line 112.
In use, if enough power is applied to power line 112, power line 112 translations apply the compression stress in pointing to thus on biasing member 402, cause biasing member 402 to be displaced to the second place (Figure 18) from primary importance (Figure 17).This skew provides power to absorb along axis PC.
Referring now to Figure 19 to Figure 22, in some embodiments, biasing member 402 can comprise the member that separates formation with shell 118, for example, member or other energy-absorbing member of steel rim of spring (Figure 19 and 20), flexible or compressible member (Figure 21 and 22), hollow sealing.In these execution modes, biasing member 402 can be located in the interior turning of shell 118, makes when power is applied to power line 112, and this power is passed to biasing member 402, and the sidewall against shell 118 compresses biasing member 402 thus.In some embodiments, shell 118 can comprise profile portion 420, for biasing member 402 being received in wherein and biasing member 402 being remained on to preposition.Should be appreciated that, biasing member 402 can be by such as spring steel, elastomer etc., providing any materials of enough elasticity/compliant characteristic to make.
Referring now to Figure 27 and 28,, in some embodiments, biasing member 402 can comprise sheet spring 430.Sheet spring 430 can comprise the roughly member of arc, this roughly the member of arc by being enough to resilient bias and providing the material of biasing force to make to power line 112.In some embodiments, sheet spring 430 keeps by retaining member 434 at 432 places, relative end.Retaining member 434 can be fixedly coupled to shell 118.Should be appreciated that, in some embodiments, the size of retaining member 434 can be configured to allow sheet spring 430 can be free to slide with respect to it (seeing Figure 28).
In use, if enough power is applied to power line 112, power line 112 straightens, and applies thus the power in sensing on biasing member 402, causes sheet spring 430 to be displaced to the second place (Figure 28) from primary importance (Figure 27).This skew provides along the power of axis PC and absorbs.
Referring now to Figure 29 to Figure 31,, in some embodiments, biasing member 402 can comprise torque spring member 436.In some embodiments, torque spring member 436 comprises torque spring 437, and this torque spring 437 keeps by retaining member 444 on an end 438.Retaining member 440 can be fixedly coupled to shell 118.Torque spring member 436 can comprise the slot part 442 be formed on wherein, for receiving and maintenance power line 112.
In use, if enough power is applied to power line 112, power line 112 straightens, apply torsion thus on biasing member 402, cause torque spring member 436 to overcome the biasing force of torque spring 437 along in figure, counterclockwise from primary importance (Figure 29), turning to the second place (Figure 30).This skew provides power to absorb along axis PC.
With reference to Figure 32 and 33, in some embodiments, biasing member 402 can comprise the tether system 450 of bias voltage.The tether system 450 of bias voltage can comprise the bias voltage spool 452 that keeps tether 454.Tether 454 can comprise the coupler members 456 that is fixedly coupled to power line 112.The tether system of bias voltage can be arranged such that at least its part extends to outside shell 118.In this embodiment, be formed with aperture 458 in shell 118 to allow tether 454 to pass therethrough.
Bias voltage spool 452 can be spring biased on power line 112, to provide retraction force.Thus, in use, if enough power is applied to power line 112, power line 112 straightens, and applies power thus on tether 454, and this power is passed to bias voltage spool 452.This power makes bias voltage spool 452 overcome its biasing force, and along the clockwise direction in figure from primary importance, (Figure 32) turns to the second place (Figure 33).This skew provides power to absorb along axis PC.
Referring now to Figure 34 and 35, in some embodiments, biasing member 402 can comprise piston apparatus 510, so that the absorption of vibrations function to be provided at least in part.Particularly, in some embodiments, piston apparatus 510 can be disposed in shell 118, or can be formed in some embodiments shell 118 outside.With reference to Figure 34 and 35, piston apparatus 510 can comprise the piston component 512 be arranged in slidably in piston chamber 514 especially.Piston component 512 can limit sealing between piston component 512 and piston chamber 514, to produce compressible P-V 516.Piston component 512 can comprise the bar 518 that is fixedly coupled to wire holder 130, and this wire holder 130 is fixedly coupled to again power line 112 so that motion together with power line 112.Piston chamber 514 can be fixedly coupled to shell 118 or integrally formed with shell 118.In some embodiments, piston chamber 514 can keep by the retainer structure (not shown) separated with shell 118.
In use, if enough power is applied to power line 112, power line 112 translations, make similarly thus piston component 512 with respect to piston chamber 514 to the left side translation in figure.This translation makes the fluid such as air, gas or liquid in piston component 512 compression pressure chambers 516, produces thus reverse biasing force.This compression to the fluid in pressure chamber 516 provides power to absorb with cumulative speed along axis PC.
Turn to now Figure 36 and 37, in some embodiments, piston apparatus 510 can be disposed in shell 118, makes piston component 512 engage slidably piston chamber 514.Piston chamber 514 can be formed the part of shell 118, makes piston component 512 engage slidably the inwall of shell 118, with shell 118, to form sealings and to limit compressible P-V 516.Piston component 512 can by directly, be fixedly coupled on power line 112 so that motion together with power line 112.In some embodiments, piston component 512 can comprise one or more hole paths 530 that extend through piston component 512.Hole path 530 can provide the stream of the fluid (that is, air) from compressible P-V 516 to the adjusting of atmosphere.In other words, the size of hole path 530 can be configured to allow predetermined fluid evacuation speed to distribute to produce required bias voltage.In some embodiments, orifice plate 532 can be disposed in shell 118, engages and is formed on the maintenance feature in shell 118, to limit compressible P-V 516.Orifice plate 532 can comprise the one or more holes path 530 through its formation, further to strengthen and to adjust the fluid of being to and from compressible P-V 516 (that is, air) be conditioned and flow.
In use, if enough power is applied to power line 112, power line 112 translations, make similarly thus piston component 512 with respect to piston chamber 514 to the left side translation in figure.This translation makes the fluid such as air, gas or liquid in piston component 512 compression pressure chambers 516, produces thus reverse biasing force.This compression to the fluid in pressure chamber 516 provides power to absorb with cumulative speed along axis PC.
In some embodiments, at Figure 38 to Figure 46, illustrate, line external member load protector 110 can comprise spring lever assembly 600.In some embodiments, spring lever assembly 600 can comprise spring lever 602 and be fixedly coupled to spring lever 602 and the wire holder 130 of power line 112.In at Figure 38 to Figure 46, illustrate, spring lever 602 can be fixedly coupled to shell 118 via the one or more retaining members 604 that extend from shell 118.More specifically, spring lever 602 can comprise a plurality of corresponding installation apertures 606 (seeing Figure 45), and the size configurations in described installation aperture 606 becomes to receive the retaining member 604 passed from it.In some embodiments, retaining member 604 can be for example by heat determine the stake or weld deformable, spring lever 602 is for good and all remained on to predetermined operable position (seeing Figure 44).Retaining member 604 can be spaced apart, and with the plane of extending between the center that is limited to them, the longitudinal axis of wherein said plane and power line 112 is quadrature roughly.In addition, retaining member 604 can be the groove of sleeve or formation in shell 118, for receiving the also end of keep-spring bar 602.
In some embodiments, line external member load protector 110 can comprise the wire holder 608 that is fixedly coupled to spring lever 602.In some embodiments, as shown in Figure 38 to Figure 46, wire holder 608 can comprise a pair of clamping component 610, and described a pair of clamping component 610 is applicable to being connected to together via securing member 612 (seeing Figure 44).Particularly, each clamping component 610 can comprise aperture 614 and the threaded bores 616 of expansion, and the aperture 614 of described expansion is passed through for the bar section that allows securing member 612, and described threaded bores 616 is for being threaded connection jointing fastener 612.Each clamping component 610 can comprise: the groove 618 formed therein, in order to clamp the sidepiece of spring lever 602; And the part 620 of circular, in order to clamp power line 112.In this way, wire holder 608 can be installed on the end of spring lever 602, makes the sidepiece of the groove 618 combined spring bars 602 of each clamping component 610.Similarly, power line 112 can extend between clamping component 610.Once tightening fastener parts 612, clamping component 610 can be drawn into together, thereby apply on spring lever 602 and power line 112, clamps and confining force.In this way, wire holder 608 is fixedly coupled to power line 112 so that motion together with power line 112.Should be appreciated that, clamping component 610 is constructed such that to use single manufacture parts on the opposite side of spring lever 602.
With reference to Figure 45, spring lever 602 can comprise the end 622 of trough of belt, the power line 112 passed therethrough for reception.
In use, if enough power is applied to power line 112, relevant power is transmitted by wire holder 608 and antagonism spring lever 602, thereby makes spring lever 602 skew between the position (Figure 39,41 and 43) of the position of loosening (seeing Figure 38,40,42 and 44) and skew.This skew provides power to absorb along axis PC.Can be based in part on the size of spring lever 602 and length with and material determine the biasing force of spring lever 602.But, should be appreciated that, in some embodiments, can need additional biasing force.In this case, secondary spring member 630 (Figure 40 and 41) can be used to be arranged between wire holder 608 and shell 118.Secondary spring 630 can be Compress Spring, and it has linear or progressive rebound degree.In addition, secondary spring member 630 can comprise disc spring, torque spring, elastic component etc.Spring member 630 can with power line 112 coaxial arrangement, to maintain aliging of spring member 630 and power line 112.Should be appreciated that, spring member 630 can separate use with spring lever 602, shown in Figure 47 and 48.
In some embodiments, as shown in Figure 42 and 43, spring lever 602 can connect pivotally about axle 650, so as between the position (Figure 43) of loose position (Figure 42) and skew pivoting action.In this embodiment, torque spring 652 can be used to, when bearing load, power line 112 is applied to contrary biasing force.
In some embodiments, bellmouth 634 can be used to the skew that the power line 112 of shell 118 is left in restriction.Bellmouth 634 can comprise the roughly body 636 and the bending outlet 638 with curved cutplanes of straight line.Bellmouth 634 can be fixedly coupled to wire holder 608 so that motion together with wire holder 608 makes when power line 112 bears load clock-shaped mouth 634 and moves together with wire holder 608.
Referring now to Figure 49 to Figure 52, in some embodiments, bias system 710 can comprise the plunger member 712 be arranged in slidably in shell 118.In some embodiments, plunger member 712 can be arranged in plunger chamber 713 slidably, and this plunger chamber 713 is arranged in shell 118 or forms the part of shell 118.Should be appreciated that, plunger chamber 120 is can be with shell 118 integrally formed and be only the part of shell 118 thus, or can form dividually the sub-component that can be positioned in shell 118 with shell 118.
Plunger member 712 utilizes coupling member 714 to be fixedly coupled to power line 112 so that motion together with power line 112.Thereby coupling member 714 can allow plunger member 712 is attached to any form formation of motion together with power line 112 on power line 112.In some embodiments, coupling member 714 can comprise clamp bracket, and described clamp bracket has the relative sidepiece linked together via fastener threads, to power line 112, to apply clamping force.Thus, as required, any other parts by plunger chamber 713, plunger member 712 and shell 118 limit collapsible volume 716.
In some embodiments, as shown in Figure 49 and Figure 50, collapsible volume 716 can comprise the bias voltage medium 718 be arranged in wherein.Bias voltage medium 718 can comprise a plurality of elastic components that are configured as spherical, pearl, cobble shape or various arbitrary shapes.This bias voltage medium can freely be placed on stacked, the stacking or otherwise gathering with the motion in response to plunger member 712 in collapsible volume 716.Namely, bias voltage medium 718 can flow freely or otherwise motion at first in collapsible volume 716, then will otherwise be constrained on the position of skew.
In use, if enough power is applied to power line 112, power line 112 translations, make similarly thus plunger member 712 with respect to plunger chamber 713 to the left side translation in figure.This translation makes the wall pressure contracting bias voltage medium 718 of plunger member 712 facing to plunger chamber 713.Produced the reverse biased power of moving of opposing power line 112 along axis PC by the reverse biased power of the bias voltage medium 718 of the contracting of the wall pressure facing to plunger chamber 713 thus.By the selection of bias voltage medium, the rebound degree of this reverse biased power can be adjusted to predetermined bias voltage and distribute, the selection of bias voltage medium comprises the selection of using material, the selection of media size, selection of medium amount etc.Should be appreciated that, can use the mixture of different medium.
In some embodiments, as shown in Figure 51 and Figure 52, disc spring member 720 can be connected between shell 118 and plunger member 712, to provide plunger member 712 biasing forces.In some embodiments, disc spring member 720 comprises disc spring, the second relative end 724 that described disc spring has the first end 722 that is fixedly coupled to shell 118 and is fixedly coupled to plunger member 712.Disc spring member 720 is extensible by the part of plunger member 712 and coupling member 714, in order to be connected to the surface 726 of plunger member 712.But, should be appreciated that, disc spring member 720 can be fixedly coupled to the trailing flank 728 of plunger member 712 or coupling member 714.
In use, if enough power is applied to power line 112, power line 112 translations, make similarly thus plunger member 712 with respect to plunger chamber 713 to the left side translation in figure.This translation causes the second end 724 of plunger member 712 tractive disc spring members 720, makes thus disc spring member 720 straighten, thereby produces the reverse biased power of the movement of opposing power line 112 along axis PC.The selection of the selection by material and the spring performance of disc spring member 720, can adjust to the rebound degree of this reverse biased power predetermined bias voltage and distribute.
In some embodiments, as shown in Figure 53 and Figure 54, spring cam lever 726 can be coupled on shell 118.Spring cam lever 726 can be to turn over the bar of the general planar of end 728 on having.The maintenance end 730 of spring cam lever 726 can be fixedly coupled to shell 118 via the maintenance feature 732 of extending from shell 118.Keep feature 732 can comprise molded built-in feature, for example sleeve, remain on wherein for will keep end 730 by interference fit or other connection.Plunger member 712 can comprise the cam feature 734 of the projection of extending from a side of plunger member 712, and is arranged in slidably in guiding groove 736.The cam feature 734 of projection can be configured to the movement of power source-responsive line 112 and plunger member 712 and combined spring cam lever 726 and this spring cam lever 726 is offset gradually.
In use, if enough power is applied to power line 112, power line 112 translations, make similarly thus plunger member 712 with respect to guiding groove 736 to the left side translation in figure.This translation causes protruding cam feature 734 along spring cam lever 726 from turning over end 728 towards keeping end 730 translations.Result as protruding cam feature 734 near spring cam lever 726 location, cause spring cam lever 726 to be displaced to gradually deviation post from initial position, produces along axis PC the reverse biased power that opposing power line 112 moves thus.Can the rebound degree of this reverse biased power be adjusted to predetermined bias voltage distribution by material and the spring performance of selecting spring cam lever 726.
In some embodiments, as shown in Figure 55 and Figure 56, line external member load protector 110 can comprise breakaway-element connector 800.This breakaway-element connector 800 can comprise First Line halfbody 802 and the second line halfbody 804, via the positive terminator 806 extended from First Line halfbody 802 and/or the second line halfbody 804 and be arranged in First Line halfbody 802 and/or the second line halfbody 804 cloudy terminator 808, First Line halfbody 802 and the second line halfbody 804 can be electrically connected to.Sun terminator 806 and cloudy terminator 808 can be configured to not only limit electrical connection but also limit mechanical connection, and wherein, mechanical connection can disconnect in response to the predetermined load along power line 112 effects.Once reach this predetermined load, mechanical connection disconnects, and interrupts thus being electrically connected to.This predetermined load (that is, confining force) can be selected to and be less than the known load that may cause power line 112 to damage.Tether member 810 can be used to link First Line halfbody 802 and the second line halfbody 804, once make to reach this predetermined load and mechanical connection and disconnect, tether member 810 can keep First Line halfbody 802 and the second line halfbody 804 closely near in order to be connected again so.Tether member 810 can be to be connected to the band member of First Line halfbody 802 and the second line halfbody 804 via securing member.Tether member 810 can be configured to have the large load-bearing ability of mechanical connection than between First Line halfbody 802 and the second line halfbody 804.
Referring now to Figure 57 to Figure 61, in some embodiments, line external member load protector 110 can comprise the cam pack 900 of bias voltage.Particularly, in some embodiments, the cam pack 900 of bias voltage can be disposed in shell 118, or can be formed in some embodiments the outside of shell 118.With reference to Figure 16, the cam pack 900 of bias voltage can comprise camshaft follower bracket 910, wire holder support 912 and biasing member 914 especially.In some embodiments, camshaft follower bracket comprises body 916, and this body 916 has one or more cam paths 918, and the size configurations of each cam path 918 becomes to receive the cam follower 920 (that is, securing member) from wherein extending through.The size configurations of cam follower 920 and cam path 918 becomes each other to fit tightly, so that unconfined camming movement to be provided.Cam follower 920 is configured to be threaded connection and is received in the mounting structure 922 extended from shell 118 or in other supporting construction be equal to.
In some embodiments, wire holder support 912 can comprise rack body, this rack body is shaped as and comprises that the first power line keeps groove 924, and this first power line keeps the size configurations of groove 924 become complementary with the corresponding second source line maintenance groove 926 formed and keep groove 924 and second source line to keep between groove 926 engaging with clamping and keeping power line 112 (Figure 58 to Figure 61) at this first power line on camshaft follower bracket 910.In this way, camshaft follower bracket 910 can as one man move with power line 112.
In some embodiments, wire holder support 912 can comprise the aperture 928 of a pair of expansion, for the bar section that allows securing member 930 by entering in the corresponding threaded bores 932 formed at camshaft follower bracket 910.When tightening fastener parts 930, wire holder support 912 by towards camshaft follower bracket 910 tractives, clamps and confining force thereby apply on power line 112.In this way, wire holder support 912 is fixedly coupled to power line 112 so that motion together with power line 112.
Continuation is with reference to Figure 57 to Figure 59, and biasing member 914 can be disposed in the position between camshaft follower bracket 910 and shell 118, makes camshaft follower bracket 910 apply compression stress to the motion in the left side in figure on biasing member 914.Especially, in some embodiments, biasing member 914 can be positioned such that biasing member 914 engaged at end shell 118 sidewall or more specifically engage the sidewall of mounting structure 922.The relative end of biasing member 914 can be oriented to combined spring wall 934.
Should be appreciated that, can have the multiple remodeling of the cam pack 900 of bias voltage, such as, for instance, biasing member 914 can be positioned such that the one termination closes the sidewall of shell 118 and at least a portion of its opposite end closing line fixture mount 912.In this way, biasing member 914 can be arranged with 112 one-tenth coaxial relations of power line.
In use, if enough power is applied to power line 112, power line 112 translations, make camshaft follower bracket 910 to the left side translation in figure thus similarly.Thereby cam follower 920 provides level and smooth, unconfined skew in the interior slip of cam path 918.This translation causes biasing member 914 compressions to produce thus reverse biased power.This compression of biasing member 914 provides power to absorb along axis PC.
Should be appreciated that from the above, one or more disclosed execution mode can be used to provide the line protection of the improved adjustment that bias voltage is distributed and enhancing simultaneously.

Claims (50)

1. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the biasing member of at least one elastically deformable; described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line; described biasing member returns back to initial position in response to removing of described load, the biasing member of described at least one elastically deformable extends from described shell.
2. electric tool according to claim 1, wherein, the biasing member of described at least one elastically deformable comprises a plurality of biasing members that extend from described shell, described a plurality of biasing members can be offset between initial position and deviation post.
3. electric tool according to claim 2, wherein, described a plurality of biasing members are along the axis bias of described power line, and described power line is around described a plurality of biasing member deposition path, thereby limits snakelike pattern.
4. electric tool according to claim 3 further comprises:
Clamping component, described clamping component is connected to described shell by the part of described power line, makes described a plurality of biasing members when described load is applied on described power line be displaced to described deviation post.
5. electric tool according to claim 1, wherein, described at least one biasing member is long element.
6. electric tool according to claim 5, wherein, described long element is cylindric.
7. electric tool according to claim 5, wherein, described long element is inhomogeneous.
8. electric tool according to claim 1, wherein, described line protector comprises a plurality of biasing members that extend from described shell, described a plurality of biasing members can be radially to bias internal between initial position and deviation post.
9. electric tool according to claim 8, wherein, described power line around described a plurality of biasing members circular locate.
10. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the biasing member of at least one elastically deformable; described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line; described biasing member returns back to initial position in response to removing of described load; described at least one biasing member is extension spring, and described extension spring is connected to described shell and engages described power line in relative end an end.
11. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor;
The line protector, described line protector operationally engages described power line, described line protector comprises the biasing member of at least one elastically deformable, described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line, and described biasing member returns back to initial position in response to removing of described load; And
Fish plate, described fish plate is fixedly coupled to described power line; Described fish plate engages described at least one biasing member.
12. electric tool according to claim 11, wherein, described line protector comprises a plurality of biasing members that extend from described shell, and described a plurality of biasing members are radially arranged around the axis of described power line.
13. electric tool according to claim 12, wherein, described fish plate sequentially engages at least two in described a plurality of biasing member in response to described load.
14. electric tool according to claim 12, wherein, described fish plate side by side engages at least two in described a plurality of biasing member in response to described load.
15. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the biasing member of at least one elastically deformable; described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line; described biasing member returns back to initial position in response to removing of described load, described biasing member is the spherical component be positioned between described power line and described shell.
16. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the biasing member of at least one elastically deformable; described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line; described biasing member returns back to initial position in response to removing of described load; described at least one biasing member is the sheet spring, and described spring is connected to slidably described shell on relative end.
17. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the biasing member of at least one elastically deformable; described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line; described biasing member returns back to initial position in response to removing of described load; described at least one biasing member is torque spring, and described torque spring is fixedly coupled to described shell on an end.
18. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor;
The line protector, described line protector operationally engages described power line, described line protector comprises the biasing member of at least one elastically deformable, described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line, and described biasing member returns back to initial position in response to removing of described load; And
Tether, described tether operationally connects described power line and described biasing member.
19. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector, described line protector operationally engages described power line, described line protector comprises the biasing member of at least one elastically deformable, described biasing member engages described power line and applies biasing force in response to being applied to the load on described power line on described power line, described biasing member returns back to initial position in response to removing of described load, described biasing member is piston apparatus, described piston apparatus comprises piston component and piston chamber, described piston component is fixedly coupled to described power line and is arranged in slidably in described piston chamber, thereby limit compressible pressure volume, described compressible pressure volume is in response to described load output reverse biased power.
20. electric tool according to claim 19 further comprises:
The hole path, described hole path extends through at least one in described piston component and described piston chamber, and described hole path makes described compressible pressure volume be communicated with the atmosphere fluid.
21. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises the spring lever member; described spring lever member is connected to described shell and engages described power line on the second end on first end; described spring lever applies biasing force in response to being applied to the load on described power line on described power line, and is returned to initial position in response to removing of described load.
22. electric tool according to claim 21 further comprises:
Wire holder, described wire holder is fixedly coupled to described power line by the described the second end of described spring lever.
23. electric tool according to claim 22, wherein, described wire holder comprises:
A pair of clamping component, each in described a pair of clamping component has the first groove for engaging described spring lever and for engaging the second groove of described power line.
24. electric tool according to claim 21 further comprises:
Spring member, described spring member is arranged between described spring lever and described shell, at least one in described power line and described spring lever of described spring member, applies biasing force.
25. electric tool according to claim 24, wherein, described spring member and described power line are coaxial.
26. electric tool according to claim 21, wherein, described spring lever is determined stake at described first end place by heat and is connected to described shell.
27. electric tool according to claim 21, wherein, described spring lever is connected to described shell pivotly at described first end place, and described electric tool further comprises torque spring, and described torque spring is biased into described spring lever in described initial position.
28. the electric tool according to claim 21 further comprises:
The bellmouth member, described bellmouth member connects regularly with described line protector, the described power line that described bellmouth member has the part of bell-shaped and is formed and passes therethrough in order to reception.
29., according to the electric tool of claim 21, wherein, described spring lever provides inhomogeneous biasing force.
30. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally engages described power line; described line protector comprises spring member; described spring member engages described shell and engage described power line on the second end on first end; described spring member applies biasing force in response to being applied to the load on described power line on described power line, and described spring member is returned to initial position in response to removing of described load.
31. the electric tool according to claim 30 further comprises:
Wire holder, described wire holder engages described the second end and the described power line of described spring member.
32., according to the electric tool of claim 30, wherein, described spring member and described power line are coaxial.
33. the electric tool according to claim 30 further comprises:
The bellmouth member, this bellmouth member connects regularly with described line protector, the described power line that described bellmouth member has the part of bell-shaped and is formed and passes therethrough in order to reception.
34., according to the electric tool of claim 30, wherein, described spring member provides inhomogeneous biasing force.
35. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector operationally is connected to described power line in order to move together with described power line; described line protector comprises the camshaft follower bracket with cam path; the size configurations of described cam path becomes to receive cam follower, and described camshaft follower bracket is biased into initial position and applies biasing force in response to being applied to the load on described power line on described power line.
36. the electric tool according to claim 35; wherein; described line protector further comprises the wire holder support, and described wire holder support is fixedly coupled to described camshaft follower bracket, and described wire holder support engages with clamping and keeps described power line together with described camshaft follower bracket.
37., according to the electric tool of claim 35, wherein, described cam follower comprises securing member, described securing member extends through slidably described cam path and is threadedly engaged with described shell.
38. the electric tool according to claim 35 further comprises:
Biasing member, described biasing member is biased into described camshaft follower bracket in described initial position, and described biasing member is returned to described initial position in response to removing of described load.
39., according to the electric tool of claim 38, wherein, described biasing member is arranged between described shell and described camshaft follower bracket.
40., according to the electric tool of claim 38, wherein, described biasing member is arranged in described shell and is formed between the spring wall on described camshaft follower bracket.
41. according to the electric tool of claim 38, wherein, described biasing member and described power line coaxial arrangement.
42. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector comprises the plunger member be arranged in slidably in chamber; described plunger member is fixedly coupled to described power line; described chamber has the bias voltage medium; described bias voltage medium is arranged in described chamber and basically can compresses with respect to the movement of described chamber in response to described plunger member, and described bias voltage dielectric response applies biasing force in being applied to the load on described power line on described power line.
43., according to the electric tool of claim 42, wherein, described bias voltage medium comprises a plurality of elastic components.
44., according to the electric tool of claim 43, wherein, described a plurality of elastic components are inhomogeneous.
45., according to the electric tool of claim 42, wherein, described bias voltage medium can freely move in initial position in described chamber, and basically is limited in described chamber in deviation post.
46. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector, described line protector comprises: be arranged in slidably the plunger member in chamber, described plunger member is fixedly coupled to described power line; The disc spring member, described disc spring member operationally connects described plunger member and described shell, in response to described plunger member, with respect to the movement of described chamber, to described plunger member, to provide biasing force, described biasing force antagonism is to the load on described power line.
47. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor; And
The line protector; described line protector comprises the spring cam lever that the plunger member that is arranged in slidably in chamber and an end are fixedly coupled to described shell; described plunger member has the cam feature of extending from it; described cam feature engages described spring cam lever and little by little makes described spring cam lever skew; in response to described plunger member, with respect to the movement of described chamber, to described plunger member, to provide cumulative biasing force, described biasing force antagonism is to the load on described power line.
48. an electric tool comprises:
Tool body, described tool body has shell;
Motor, described motor arrangement is in described shell;
Power line, described power line is connected to described motor, described power line has the breakaway-element part, described breakaway-element partly has the first halfbody and the second halfbody that connects and limit releasedly confining force, described breakaway-element part can be separated in response to the load that is greater than described confining force, and described confining force is less than the power that known meeting damages described power line.
49., according to the described electric tool of claim 48, further comprise:
Tether member, described tether member is fixedly coupled to described the first halfbody and described second halfbody of described power line, and at described breakaway-element part after separating, described tether member keeps described the first halfbody and described the second halfbody.
50., according to the described electric tool of claim 49, wherein, described tether member limits the tether power that keeps described the first halfbody and described the second halfbody, described tether power is greater than described confining force.
CN200980129892.2A 2008-06-30 2009-06-29 Cord protector for power tools Expired - Fee Related CN102113185B (en)

Applications Claiming Priority (7)

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US12/164,621 2008-06-30
US12/164,650 2008-06-30
US12/164,650 US8348695B2 (en) 2006-10-30 2008-06-30 Cord protector for power tools
US12/164,584 2008-06-30
US12/164,621 US8035955B2 (en) 2006-10-30 2008-06-30 Cord protector for power tools
US12/164,584 US7727003B2 (en) 2006-10-30 2008-06-30 Cord protector for power tools
PCT/US2009/049032 WO2010002776A2 (en) 2008-06-30 2009-06-29 Cord protector for power tools

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EP2301119B1 (en) 2015-05-13
WO2010002776A2 (en) 2010-01-07
CN102113185A (en) 2011-06-29
WO2010002776A3 (en) 2010-04-01
EP2301119A4 (en) 2013-01-09
EP2301119A2 (en) 2011-03-30

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