CN1274466C - Spanner safety devices - Google Patents
Spanner safety devices Download PDFInfo
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- CN1274466C CN1274466C CN 02127158 CN02127158A CN1274466C CN 1274466 C CN1274466 C CN 1274466C CN 02127158 CN02127158 CN 02127158 CN 02127158 A CN02127158 A CN 02127158A CN 1274466 C CN1274466 C CN 1274466C
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Abstract
The present invention relates to a safety device of a spanner, which comprises a driving head and a handle rod extended from the driving head, wherein a grab handle is arranged on the handle rod, the handle rod and the grab handle are matched with each other in a sliding mode in an axial direction, a resistant piece is arranged between the handle rod and the grab handle, and a label part is arranged on the handle rod. When a user wrenches a tool to lock a workpiece, the force applied by the user on the grab handle generates component force in an axial direction and a vertical direction at locking moment, wherein the component force in an axial direction directly pushes the grab handle to move along the axial direction, and presses a spring resistant piece to generate opposite resistance, and label parts are arranged in the sliding travel of the handle rod and the grab handle to label size labels of various opposite workpieces. When the resistant piece generates resistance, the grab handle moves to a size label point for displaying an opposite label part. Force moment (namely a torque force load of workpiece according with the size label) is formed from the component force in a vertical direction and the length of a force applying arm of each size label, the user stops operation, the phenomenon that the workpiece and a relevant structure of a holdback workpiece are damaged can not occur, and the safety of the workpiece and the relevant structure can be ensured in a dynamic state of the locking operation.
Description
[technical field]
The present invention relates to a kind of spanner safety devices.
[background technology]
At present for making spanner structure have the security that drives workpiece, be and prevent by the workpiece of the application of force unlikely destruction that is subjected to the excessive application of force when the application of force, therefore the dealer all has at specific torsion and designs an adjustable torsion structure, be pre-set relative torsion, when making tool operation,, can reach the purpose of security control by the mode of jumping tooth when torsion surpasses setting value, and the case of existing many patent applied fors, such as:
The 902 three nine-day periods after the winter solstice First Five-Year Plan No. seven " torsion-adjustable spanner locating structure ", the 902 three nine-day periods after the winter solstice First Five-Year Plan No. nine " the torsion-adjustable spanner is constructed fast ", the 8920969 No. 0 " but torque spanner location structure ", the 892042 May Day number " structure-improved of torque wrench ", the 8720505 No. three " atwirl torque spanner ", the 8620731 No. eight " many elastic components structure of torque spanner ", the 8520 pseudo-ginseng six No. five " simple type torsion ratchet spanner ", the 8420596 No. three " torsion setting locking device ", the 8420689 No. eight " fine setting torque spanner ", the 7920670 No. seven " torque spanner push type locking device ", the seven or seven 211 two or nine No. five " bilateral sound equipment torsion structural improvement " and seven No. two novel patent cases in Taiwan such as " modified form torque spanneres " of the May 4th July 1st two, its structure is to be provided with a compression spring within the spanner handle bar mostly, latch in this spring one end and ratchet or the driving head offsets, end is the lever or the rotation compression adjustment structure of a revolving type in addition, and after reaching it and can adjusting compressed strength, make the latch in the driving head have certain pre-power value.When the strength of pulling surpassed default torque value, its latch is escape at once, and spanner can't be gone again workpiece is carried out the application of force, and reaches the purpose of not destroying workpiece.But these structures all have the unreasonable place in the following design, such as:
1, need rotation in advance to adjust when chance and different workpiece: because it is the process of adjusting by rotation, can make inner spring reach predetermined pre-power with the compacting latch, so process inconvenience very of rotation adjustment, if the class interval of adjusting is very big, the stroke of its adjustment is inevitable to be increased thereupon, and the number of turns phase shape of being rotated is heightened, and, be to be the increase on the multiple, so use the necessity that goes up inconvenience very and improvement is arranged.
2, the torsion arm of force to establish juice unreasonable: when the required torsion of workpiece heightens, compressed stroke of outer spring must heighten thereupon in it, be that lever must rely on the driving head end with the compression spring via rotation, so, when the torque value of workpiece is big more, the distance of its compression spring must increase thereupon, the arm of force of the application of force must shorten relatively, and the user is when holding the lever application of force, and its force arm shortens, when especially torsion is big more, its force arm is short more, and so essential its application of force that improves relatively of user can remedy, this is a unreasonable design, so necessity of improvement is arranged.
3, before arriving, torsion can't know the state of torsion: because whole torsion structure is to be dissolved in lever inside, so in adjusting the back course of action, the user can't see the structural change that it is inner by the outside fully, so before reaching default torque value, the user at all can't by outward appearance see at present instrument to the state of the workpiece application of force, even if before arriving last limiting value, only can be pushed into the limit, and make inner structure jump the tooth bump mutually, the user can't must need to go after the application of force is excessive the blocking of jumping tooth to return again and easily cause the infringement of jumping on the toothing in advance prior to removing strength before arriving at once.
4, easily produce the fatigue of spring and the inefficacy of dependency structure: because the restriction of torsion all is jumping tooth or to make relevant structure produce the action of jumping card, and it jumps card motion when producing, and promptly easily causes the fatigue damage of jumping the card dependency structure; And the compression when inner spring is long also easily causes tired phenomenon, uses the back for a long time, promptly can't reach the degree of accuracy of torsion safety, so necessity of improvement is arranged.
Be provided with slidably handle body structure and see all present tool wrench, relevant preceding case all arranged both at home and abroad, comprise; The 8721482 No. six novel patent case in " spanner gripping structural improvement " Taiwan, it is to be provided with tooth portion in limit, spanner handle side, the nested cooperation of gripping member inner edge, it is the structural form of a gripping member sliding sleeve; German DE29900615U1 case is abroad then arranged, identical with aforementioned state inner structure; No. the 58238077, the U.S.: " DOBLE-ENDED WRENCH " case all is the handle structures that are provided with the clamping of C type in the pad body of double end form, structural form so, can provide one can slippage on the pad body handle structure; Other is just like the 47062 No. five, GB the 21253 sixteen A case of Britain's case, it is equipped with a handle structure that can slide on the pad body, or be instrument as structures such as No. the 5931065, U.S. and be provided with slidably lever, the brachium of itself or extending start work maybe can change the length of the application of force arm of force.But in the structure of each case, all do not have to be oppositely arranged and can inspect the structure that lever is pulled torsion, thus often cause the torsion that is provided can't cooperate actual needs, and the work of twisting off or the not enough and loosening disappearance of torsion are arranged, so necessity of improvement is arranged.
[summary of the invention]
The inventor in view of this, for making, develop a kind of spanner safety devices that meets above-mentioned condition by can be directly on the instrument of the handle bar application of force in the course of action of pulling, endwisely slipping reference form that the safety value that shows the application of force becomes high security to meet the demand for security in the construction by lever.
Technical problem to be solved by this invention is, above-mentioned deficiency at prior art, and provide a kind of spanner safety devices, this safety device makes lever demonstrate relative sign in moving, the user can learn arrive workpiece with and the moment that can bear of relevant structure and stop action, the instrument that reaches can demonstrate relative message immediately and inform that the user stops action and becomes a high safe structure form in locking operation dynamically.
Above-mentioned technical problem of the present invention is realized by following technical scheme.
A kind of spanner safety devices, this spanner comprises a driving head and an extended handle bar thereof, be provided with a lever in the handle bar, and between this handle bar and lever, be provided with the impedance part, in addition be provided with sign portion into size indication in the handle bar, it is characterized in that: this handle bar and lever are in axial sliding fit, and the ora terminalis of the described relatively impedance part of lever, can be when the lever axial action direct this impedance part of compression, the position of the size indication of described sign portion is to cooperate application of force value to do suitable measuring.
This handle bar and the mutual axial sliding fit of lever, and be provided with the impedance part between the two, when the impedance part is held the lever application of force in the user, the application of force that forces on the lever is that the component that produces on axial and the vertical direction is rotated at the center with the driving head because of the handle bar, and then make lever on the handle bar, produce relative motion, compress the impedance part and reach, and make lever move to suitable arm of force place, and relative sign portion is set on the handle bar, make when lever moves, can disclose suitable size indication, and reach the purpose that shows secure reference.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
Can be provided with storage tank with respect to grip on this handle bar, its length is corresponding with the impedance part, and this impedance part places in this storage tank, and the top and bottom ends of Gai Zu Pit spare expose respectively the handle bar and with the blocking mutually of lever opposing end surface.
This lever can be provided with respect to the handle bar and hold the handle groove, and this handle bar is set in this appearance handle groove, and the relative impedance part of this appearance handle groove centre place is provided with tank, and this tank is provided with the stop section, and the end of this impedance part is supported by the tank stop section of lever ends.
The stop section of this tank is to be located at the both ends of tank to seal tank.
This impedance part is length and the corresponding spring of storage tank.
When the user imposes an application of force F to lever, application of force F presses lever and the handle bar rotates for center of rotation O with the driving head, when arriving the instant of locking, the user is returned instrument just, when making application of force F vertically be pressed on the lever center, its handle bar begins moving partially, lever produces the component inclination angle [theta], at this moment, former application of force F perpendicular to lever also begins the lever that tilts is produced component, the track of application of force F then still moves according to former direction in the process of action according to the inertia of the application of force, even: can slightly move away from direction because of centrifugal force to center of rotation O, its component one is axial thrust load FH, another then is vertical stress component FV, wherein, axial thrust load FH can promote lever compression impedance part and away from driving head end, make force arm L be extended for long force arm L1, sign portion on the handle bar demonstrates relative size indication simultaneously, when application of force F promptly arrives the specified application of force by track P0 to P1 point, its relative workpiece size indicates at once and shows, the maximum safety value of moment that the product of its vertical stress component FV and long force arm L1 just can bear for this workpiece, wherein, because its axial thrust load FH is directly proportional with cloudy anti-part decrement, so can be by the deflection of impedance part, calculate axial thrust load FH and vertical stress component FV, and release application of force F, and can calculate the position at size indication place simultaneously.Therefore after size indication marks, the user forces in when carrying out in the action, if it is during less than application of force F, the then unlikely demonstration of its size indication, and when in action, carrying out, its application of force F is slightly larger than or when equaling its corresponding value, its size indication that indicates in advance can show, and its size indication and show in the mode of high display degree and to inform use; And when the degree of blocking of workpiece did not reach specified standard as yet, the application of force F of user institute still can continue the P3 that the drive instrument arrives track, still can become the component form of another component angle θ, still can reach the form of whole kinetic energy balancing.
Central authorities in this impedance part in this handle bar can be provided with a support member, and this support member locks together with the lock piece of being located at handle bar end.
Also can be respectively equipped with relative semicircular storage tank and tank between this handle bar and lever, and make
Respectively be set as semicircular storage tank and tank between handle bar and lever, and the less round impedance part in circle footpath is placed in wherein.
There is no the structure of any groove shape on the handle bar, with the stop section that protrudes out with in the tank that stretches into lever, so that replace with the impedance part in this tank.
The impedance part is directly around handle bar periphery, and relative ccontaining impedance part of tank and stop section are for blocking impedance part on lever and the handle bar.
The tank of lever is arranged to other end of an end opening and is provided with the stop section.
It is to locate to be provided with near the end of tool drives head that tank is provided with the stop section.
The tank of lever is to be arranged to an end opening to hold the structural form that is provided with the stop section in addition.
Storage tank both ends on the handle bar respectively are provided with the fastening part of an indent, stretch into therebetween for the thin footpath of support member end, and other spiral shell is provided with a lock piece on the outwards open end of a fastening part, so that the open fastening part form of this former one-tenth forms the structural form of lock piece end, locking blocking location, and the external diameter in its support member stage casing is suitable with impedance part inner radius, and what make that support member can be certain supports the impedance part.
Be on the handle bar at final stroke place, to locate stop bit mark by one position-arresting part in addition when making the lever slippage on the handle boom end.
The present invention is provided with the impedance part that can suppress mutually between handle bar and lever mutually in axial sliding by instrument.And its impedance part is to move when stressed in lever, in the handle bar is when being the center rotation with the driving head, the user holds and compresses the impedance part when lever produces centrifugal strength and axial component at once, lever is moved vertically, the lengthening force arm, and the sign portion that is matched with on the handle bar is provided with, when being moved, lever demonstrates relative sign, the user can learn arrive workpiece with and the moment that can bear of relevant structure and stop action, the instrument that reaches can demonstrate relative message immediately and inform that the user stops action and becomes a high safe structure form in locking operation dynamically.
And so structure can reach following advantage in fact:
1, designs simplification: since whole structure be in a handle bar and lever be provided with in addition one axially the impedance part of setting cooperate and be equipped between lever and handle bar, make when PROPEL, to produce certain axial displacement variable quantity between lever and handle bar, can reach the position that demonstrates the suitable application of force of workpiece size; The simplification of ten minutes on its structure can the high torque spanner of more known complexity be low on manufacturing and maintenance cost more, meets economic principle.
2, the application of force is reasonable: when the required torsion of workpiece is big more, because its application of force is bigger, therefore lever is bigger for the compressing force of impedance part, its decrement more increases, the length of its long force arm L1 of relative growth, vertical stress component FV can be diminished relatively, relative, its application of force F also can cooperate the increase of long force arm L1, and pull the application of force with the most rational strength scope, unlikelyly be generally anti-its road of length that torque value is become dwindle force arm greatly on the contrary and go, so structural design of the present invention reality has its reasonability as conventional construction.
3, need not to preestablish: because structure of the present invention is when the stressed enforcement of lever, show simultaneously, so need not complicated setting operation.And can reach the purpose of quick demonstration easy to use.
4, can observe use continuously: because lever is very easily to produce relative motion in stressed course of action with the handle bar, therefore the process that moves can be learnt the rough variable condition of the application of force by the announcement of size indication, can be before arriving the torsion safety value of setting, can stop action, and reach the purpose of high safety.
For further understanding structure of the present invention, feature and other purposes, now with as after preferred embodiment and be described with reference to the accompanying drawings:
[description of drawings]
Fig. 1 is the surface structure schematic diagram of preferred embodiment of the present invention.
Fig. 2 is STRUCTURE DECOMPOSITION figure of the present invention.
Fig. 3 is a generalized section of the present invention.
Fig. 4 A is an action schematic top plan view of the present invention.Fig. 4 B is the partial enlarged drawing of Fig. 4 A.
Fig. 5 is an action generalized section of the present invention.
Fig. 6 is an action force map analysis schematic diagram of the present invention.
Fig. 7 is a movement locus schematic diagram of the present invention.
Fig. 8 is a second embodiment of the present invention schematic diagram.
Fig. 9 is a third embodiment of the present invention schematic diagram.
Figure 10 is a fourth embodiment of the present invention schematic diagram.
Figure 11 is a fifth embodiment of the present invention schematic diagram.
Figure 12 A, 12B are that previous embodiment of the present invention is implemented on schematic diagram on the different single head instruments.
Figure 13 is that previous embodiment of the present invention is implemented on the schematic diagram on the double head tool.
Figure 14 is the cylinder form handle bar schematic diagram that is implemented on of the present invention.
Figure 15 A, 15B are the cylinder form handle bar schematic appearance that is implemented on of the present invention.
Figure 16 is a seventh embodiment of the present invention schematic diagram.
[specific embodiment]
Please cooperate and consult shown in Figure 1ly, spanner 10 of the present invention comprises a driving head 11 and an extended handle bar 12 thereof, is provided with a lever 20 in handle bar 12.And spanner safety devices of the present invention is the impedance part 30 that is provided with a spring form in handle bar 12 and 20 of levers, please cooperate and consult shown in Fig. 2,3, and its handle bar 12 is provided with for the ccontaining storage tank 13 of impedance part 30.By impedance part 30 when the user holds lever 20 application of forces, making the application of force that forces on the lever 20 is that the center rotation produces axial component because of handle bar 12 with driving head 11, and then make lever 20 on handle bar 12, produce relative motion, and reach the strength of compressing impedance part 30, and make lever 20 move to suitable arm of force place.And suitable sign portion 14 is set on handle bar 12, and make when lever 20 actions, can disclose suitable size indication 140, and reach the purpose that shows secure reference.
Wherein, be provided with microscler storage tank 13 with respect to lever 20 places on the handle bar 12, its length is suitable with impedance part 30, and impedance part 30 can integral body be inserted therebetween.And the top and bottom ends of impedance part 30 slightly exposes lever 20 end faces respectively, for the blocking of lever 20 opposing end surfaces.
And be provided with sign portion 14 in addition in handle bar 12 nearly storage tanks 13 places.The size indication 140 that is provided with wire is carved by its sign portion 14, and its size indication 140 is the sizes that drive workpiece for driving head 11, and the position of each size indication 140 is to cooperate application of force value to do suitable measuring, and its mode of measuring can cooperate following content to learn.
As shown in Figure 6, wherein:
F is application of force person's the application of force
FH is the axial thrust load when arrival component angle is θ in the PROPEL
FV is the vertical stress component when arrival component angle is θ in the PROPEL
L1-L is the distance that lever displacement when arriving component angle θ in the PROPEL or impedance part move.
Therefore when the application of force arrived the component angle, the state of its each component was promptly as follows,
FH＝F*SlNθ
FV＝F*COSθ
The strength FR that lever compacting impedance this moment part produces is;
FR＝K(L1-L)＝FH
K is the coefficient of elasticity of impedance part;
F＝FH/SINθ＝X(L1-L)/SINθ
FV＝F*COSθ＝K(L1-L)COSθ/SlNθ
The torsion ME value that workpiece is relative is;
ME＝LI*FV
L1＝ME/FV＝ME*SINθ/K(L1-L)COSθ
Wherein, except that the L1 value for not knowing, other values are known, can learn size indication 140 places of this corresponding sign portion 14, this all can set in advance, can be when user's application of force, can be certain demonstrate relative size indication 140, to reach the purpose of warning safe.
And the impedance part 30 similar coil spring that is a length and storage tank 13 is used when making lever 20 stressed, can produce a drag that is directly proportional with coefficient of elasticity K value to lever 20.
And when the present invention when using, the user imposes an application of force F to lever 20, please cooperate to consult shown in Fig. 4,5,6,7.Its application of force F presses lever 20 and handle bar 12 is that center of rotation O rotates with driving head 11.When arriving the instant of locking, the user can be returned instrument 10 just, when making application of force F vertically be pressed on lever 20 centers, its handle bar 12 beginnings are moving partially, lever 20 produces the component inclination angle [theta], and at this moment, former application of force F perpendicular to lever 20 also begins the lever 20 that tilts is produced component, the track of application of force F then still moves according to former direction in the process of action according to the inertia of the application of force, even can slightly move away from direction to center of rotation O because of centrifugal force.Please cooperate and consult shown in Figure 6ly, its component one is axial thrust load FH, and another then is vertical stress component FV.Wherein, axial thrust load FH can promote lever 20 compression impedance parts 30 and away from driving head 11 ends, make force arm L be extended for long force arm L1, and the sign portion 14 on handle bar 12 also can demonstrate relative size indication 140 simultaneously.When application of force F promptly arrived the specified application of force by track P0 to P1 point, its relative workpiece size indicated 140 and shows at once, the maximum safety value of moment that the product of its vertical stress component FV and long force arm L1 just can bear for this workpiece.Wherein, owing to its axial thrust load FH is directly proportional with impedance part 30 decrements, thus can calculate axial thrust load FH and vertical stress component FV by the deflection of impedance part 30, and release application of force F, and can calculate the position at size indication 140 places simultaneously.Therefore when size indication 140 marks after, the user forces in when carrying out in the action, as if it during less than application of force F, and then its size indication 140 unlikely demonstrations.And when in action when carrying out, its application of force F is slightly larger than or when equaling its corresponding value, the size border that it indicates in advance shows that 140 can show.And its size indication 140 also shows in the mode of high display degree and to inform the user.And when the degree of blocking of workpiece did not reach specified standard as yet, the application of force F of user institute still can continue the P2 that the drive instrument arrives track, becomes the component form of another component angle θ 2, can reach the form of overall dynamics balance.
The mode of aforesaid structure, it also can be in handle bar 12 (as shown in Figure 8), directly cooperate one in handle bar 12 terminal sealed lock pieces 16, can make the 30 unlikely bending infringements that betide in the process of pressing of impedance part in the ccontaining separately support member 15 of the central authorities of impedance part 30.
And the length of the impedance part 30 that aforementioned each figure is disclosed slightly is shorter than the length of lever 20, makes mobile announcement size indication 140 partial journeys of lever 20 longer.And also can be as shown in Figure 9, the length of its impedance part 30 can slightly shorten, so that lever 20 does not cause the storage tank 13 on the handle bar 12 to expose when moving, uses the security and the aesthetic property that improve on using.
Impedance part 30 in addition of the present invention is except that the embodiment shown in each figure is general as described above, be placed in the storage tank 13 in the handle bar 12, also can be as shown in figure 10, make the structural form of 20 of handle bar 12 and levers respectively be set as semicircular ccontaining poor 13A and tank 22A etc., and make the less round impedance part 30A in circle footpath, reach aforesaid function equally; Also can be as shown in figure 11, it there is no the structure of any groove shape on handle bar 12, stretch into a stop section that protrudes out 17 in the tank 22B of lever 20, so that replace with impedance part 30B in this tank 22B, can reach aforementioned every function equally; And the embodiment of aforementioned each figure be except that can being used in general ratchet spanner instrument, in addition can be as shown in figure 12, and it can be used on as shown in the figure the open-end wrench and monkey wrench simultaneously; In addition can be as shown in figure 13, structure of the present invention can be used in the structure of bullhead, promptly as the composite structure of opening and plum blossom; In addition can be as shown in figure 14, its impedance part 30C is directly around handle bar 12 peripheries, and is provided with relative tank 22C for ccontaining in lever 20, then is provided with stop section 17A for blocking impedance part 30C on handle bar 12; And the structure of Figure 14 is particularly useful on the tool construction shown in Figure 15, and promptly its handle bar 12 is to be a cylindrical structure.
Can cooperate in addition and consult shown in Fig. 1,2,16, the tank 22D of its lever 20 can be arranged to other end of an end opening to be provided with stop section 220D.According to the legend of Figure 16, it is near place, the end of instrument 10 driving heads 11 that its tank 22D is provided with stop section 220D, and when making lever 20 away from instrument 10 driving heads 11, its lever 20 can be by stop section 220D and the impedance part 30 generation impedance strength that is fastened.And when lever 20 to the driving head 11 of instrument 10 near the time, then do not produce the strength of blocking impedances with impedance part 30, make lever 20 be movable to nearly driving head 11 places.The user can move at the operation of pulling fast of exerting oneself for a short time, and when treating to exert oneself greatly, the side moves lever 20 to impedance part 30 directions, and when extremely being fastened the generation drag with impedance part 30, row is exerted oneself greatly again.And its action that is produced when exerting oneself greatly promptly shown in Fig. 4,6,7, and can reach aforementioned every function.More make lever slidably 20 cooperate the setting of impedance parts 30, except that effect with aforementioned announcement torsion, more can be on handle bar 12 the moving of big distance, changing force arm, and reach the function that changes application of force example.
And structure as shown in figure 16, its lever 20 structures with single end stop section 220D also can be used on as shown in Figure 8 impedance part 30 and the structural form that handle bar 12 cooperates.As shown in figure 16, the storage tank 13B both ends on its handle bar 12 respectively are provided with the fastening part 18 of an indent, stretch into therebetween for the thin footpath of support member 15A end.And other spiral shell is provided with a lock piece 16A on the outwards open end of a fastening part 18, so that open fastening part 18 forms of this former one-tenth form the structural form of lock piece 16A end, locking blocking location.And the external diameter in its support member 15A stage casing is suitable with impedance part 30 inner radius, and what make that support member 15A can be certain supports impedance part 30, becomes the structure of another embodiment.
And please cooperate Fig. 1 to shown in Figure 6, on handle bar end at 12 whole story of the present invention, the final stroke place during lever 20 slippages establishes gummed location one stop bit mark 19 by position-arresting part 120 plugs of a shallow slot form in addition.Its stop bit is marked 19 bottoms and is established in the position-arresting part 120, and its end that exposes to position-arresting part 120 forms the structural form of triangle index in addition, to become the structure function of sign or stop bit, to make the function that can reach lever 20 slippages blocking so far location.Also please cooperate shown in Figure 13,15 generally, its stop bit mark 19 also can cooperate different form of tools to be provided with.
Claims (15)
1, a kind of spanner safety devices, this spanner comprises a driving head and an extended handle bar thereof, be provided with a lever in the handle bar, and between this handle bar and lever, be provided with the impedance part, in addition be provided with sign portion into size indication in the handle bar, it is characterized in that: this handle bar and lever are in axial sliding fit, and the ora terminalis of the described relatively impedance part of lever, can be when the lever axial action direct this impedance part of compression, the position of the size indication of described sign portion is to cooperate application of force value to do suitable measuring.
2, spanner safety devices according to claim 1, it is characterized in that: be provided with storage tank with respect to grip on this handle bar, its length is corresponding with the impedance part, and this impedance part places in this storage tank, and the top and bottom ends of this impedance part expose respectively the handle bar and with the blocking mutually of lever opposing end surface.
3, spanner safety devices according to claim 1, it is characterized in that: this lever is provided with respect to the handle bar and holds the handle groove, this handle bar is set in this appearance handle groove, the relative impedance part of this appearance handle groove centre place is provided with tank, this tank is provided with the stop section, and the end of this impedance part is supported by the tank stop section of lever ends.
4, spanner safety devices according to claim 3 is characterized in that: the stop section of this tank is to be located at the both ends of tank to seal tank.
5, spanner safety devices according to claim 2 is characterized in that: this impedance part is length and the corresponding spring of storage tank.
6, spanner safety devices according to claim 1, it is characterized in that: when the user imposes an application of force F to lever, application of force F presses lever and the handle bar rotates for center of rotation O with the driving head, when arriving the instant of locking, the user is returned instrument just, when making application of force F vertically be pressed on the lever center, its handle bar begins moving partially, lever produces the component inclination angle [theta], at this moment, former application of force F perpendicular to lever also begins the lever that tilts is produced component, the track of application of force F then still moves according to former direction in the process of action according to the inertia of the application of force, even: can slightly move away from direction because of centrifugal force to center of rotation O, its component one is axial thrust load FH, another then is vertical stress component FV, wherein, axial thrust load FH can promote lever compression impedance part and away from driving head end, make force arm L be extended for long force arm L1, sign portion on the handle bar demonstrates relative size indication simultaneously, when application of force F promptly arrives the specified application of force by track P0 to P1 point, its relative workpiece size indicates at once and shows, the maximum safety value of moment that the product of its vertical stress component FV and long force arm L1 just can bear for this workpiece, wherein, because its axial thrust load FH is directly proportional with impedance part decrement, so can be by the deflection of impedance part, calculate axial thrust load FH and vertical stress component FV, and release application of force F, and the while can calculate the position at size indication place, therefore after size indication marks, the user forces in when carrying out in the action, if it is during less than application of force F, the then unlikely demonstration of its size indication, and when in action, carrying out, its application of force F is slightly larger than or when equaling its corresponding value, its size indication that indicates in advance can show, and its size indication and show in the mode of high display degree and to inform use; And when the degree of blocking of workpiece did not reach specified standard as yet, the application of force F of user institute still can continue the P2 that the drive instrument arrives track, still can become the component form of another component angle θ 2, still can reach the form of whole kinetic energy balancing.
7, spanner safety devices according to claim 1 is characterized in that: the central authorities in this impedance part in this handle bar are provided with a support member, and this support member locks together with the lock piece of being located at handle bar end.
8, spanner safety devices according to claim 1 is characterized in that: be respectively equipped with relative semicircular storage tank and tank between this handle bar and lever, and the less impedance part in circle footpath is placed in this storage tank and the tank.
9, spanner safety devices according to claim 1, it is characterized in that: this lever is provided with the tank of this handle bar relatively, this impedance part places in this tank, and this handle bar is provided with the stop section that protrudes out, and this stop section is stretched into the tank impedance part interior and that this tank is interior of this lever and replaced.
10, spanner safety devices according to claim 9 is characterized in that: this impedance part is directly around handle bar periphery.
11, spanner safety devices according to claim 1 is characterized in that: this lever is provided with the tank of this handle bar relatively, and this impedance part places in this tank, and the tank of this lever is arranged to other end of an end opening and is provided with the stop section.
12, spanner safety devices according to claim 11 is characterized in that: the stop section of this tank is the place, end that is positioned near this driving head.
13, spanner safety devices according to claim 1 is characterized in that: the tank of lever is to be arranged to an end opening to hold the structural form that is provided with the stop section in addition.
14, according to claim 1 or 7 described spanner safety devices, it is characterized in that: the storage tank both ends on the handle bar respectively are provided with the fastening part of an indent, stretch into therebetween for the thin footpath of support member end, and other spiral shell is provided with a lock piece on the outwards open end of a fastening part, so that the open fastening part form of this former one-tenth forms the structural form of lock piece end, locking blocking location, and the external diameter in its support member stage casing is suitable with impedance part inner radius, make support member certain support the impedance part.
15, according to claim 1 or 7 described spanner safety devices, it is characterized in that: be on the handle bar at final stroke place, to locate stop bit mark by one position-arresting part in addition when making the lever slippage on the handle boom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02127158 CN1274466C (en) | 2002-07-31 | 2002-07-31 | Spanner safety devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02127158 CN1274466C (en) | 2002-07-31 | 2002-07-31 | Spanner safety devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1472043A CN1472043A (en) | 2004-02-04 |
| CN1274466C true CN1274466C (en) | 2006-09-13 |
Family
ID=34143482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02127158 Expired - Fee Related CN1274466C (en) | 2002-07-31 | 2002-07-31 | Spanner safety devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1274466C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480555A (en) * | 2018-05-15 | 2019-11-22 | 鑫爵实业股份有限公司 | Torque spanner |
-
2002
- 2002-07-31 CN CN 02127158 patent/CN1274466C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1472043A (en) | 2004-02-04 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20060913 Termination date: 20110731 |