CN2853300Y

CN2853300Y - Torsion regulating assembly

Info

Publication number: CN2853300Y
Application number: CN 200520136622
Authority: CN
Inventors: 张国伟; 张锐; 梁东
Original assignee: Lite On Technology Corp
Current assignee: Lite On Technology Corp
Priority date: 2005-12-15
Filing date: 2005-12-15
Publication date: 2007-01-03
Anticipated expiration: 2015-12-15

Abstract

The utility model discloses a torque force adjustment component, comprising a first shell tube provided with at least one axial locating slot, a second shell tube provided with at least one feed-through, wherein the second shell tube covers the first shell tube and is engaged with the first shell tube through the flight, thereby overlapping the feed-through and the locating slot. The second shell tube is sleeved by a torque force adjustment sleeve, a flight part is screw-plugged in through at least one arbours on the torque force adjustment ring, and the front end of the flight part is made to thread the through hole and is bedded in the locating slot, thereby fixing the relative position of the first shell tube and the second shell tube to adjust maximum torque force of the torque force transmission mechanism inside the first shell tube and the second shell tube. With the torque force adjustment component, maximum output torque force is able to be adjusted to a presetting value and will not be altered due to the torque force adjustment components suffering collisions or oscillations of the external force or operation mistakes.

Description

Torsion is adjusted assembly

Technical field

The utility model is adjusted relevant with the torsion of turning tool, particularly relate to a kind of torsion and adjust assembly, it can provide accurate acrotorque output valve, can not change because of the torsion output maximum that vibration, collision cause this torsion to adjust assembly, thereby influences its actual torsion output.

Background technology

Generally speaking, when screw elements such as screw, nut are rotated locking by turning tool turning tool spare (screwdriver head, Hexagonal jacket etc.), must be at the requirement of screw element specification and prefastening load, be rotated locking with correct torsion, thereby make this screw element can be positively locked, but be unlikely to cause damage because turning tool applies too big torsion.Excessive torsion can make that also screw element bears too high prefastening load simultaneously, thereby reduces the external force load upper limit that it can bear.For the torsion output of turning tools such as the lever that makes manual rotation, pneumatic joint, electronic joint arrives a predetermined value, usually can add between turning tool and tool piece that a torsion adjusting device is as the torsion transmission, can limit the maximum of turning tool torsion output, the torsion that makes tool piece double thread spare be rotated locking is defined to maximum.

See also Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B and shown in Figure 3, it is the torsion adjusting device of a known technology, includes one first package 1, one second package 2, one first braking seat 3, one second braking seat 4, elastic component 5 and an adjustment ring 6.Wherein second package 2 is placed in the outside of first package 1 and works in coordination with screw thread, can be by the linear relative displacement of rotation generation relatively.This first package, 1 outside is provided with at least one positioning groove 1a along vertical setting of first package 1, and second package 2 is provided with at least one through hole 2a corresponding with positioning groove 1a.First braking seat 3 and second braking seat 4 are arranged in the inner space that is formed jointly by first package 1 and second package 2, and form the friction apply relation against each other, wherein, first braking seat 3 is connected in a driving shaft 7, driving shaft 7 is connected in a power source (not shown) that is arranged at housing 8 inside of turning tool, for example a pneumatic means or electro-motor; Second braking seat 4 is connected in an output shaft 9, and the front end of output shaft 9 can connect multi-form tool piece 9a according to demand.After utilizing power source to drive driving shaft 7, can make first braking seat 3 drive 4 rotations of second braking seat and carry out the torsion transmission, and make output shaft drive tool piece 9a rotational lock screw element (not shown).Engage power by the decision of the normal pressure between first braking seat 3 and second braking seat 4 between first braking seat 3 and second braking seat 4, and the big I of this engaging power determines the torsion maximum that can transmit between first braking seat 3 and second braking seat 4.Elastic component 5 is then respectively against second braking seat 4 and second package 2, produces an elastic thrust with this and pushes second braking seat 4 and produce aforesaid normal pressure against first braking seat 3.Adjust the outside that ring 6 is placed in second package 2, this adjusts in the ring 6 and is provided with an elastic collar 6a, just can cover through hole 2a, and ejection one location steel ball 6b is by through hole 2a and embed positioning groove 1a, the part of this positioning ball 6b is arranged in positioning groove 1a, another part then is arranged in through hole 2a, form fixed effect with this, fix the relative position of first package 1 and second package 2, making between first package 1 and second package 2 not can relative the rotation and produce linear relative displacement, the decrement of elastic component 5 is fixed, produce fixing elastic thrust and come ejection second braking seat 4.If the torsion that first braking seat 3 and second braking seat 4 are transmitted is greater than the friction apply power between its two, then first braking seat 3 just can't in time engage mutually with second braking seat 4, and make the braking seat 3 of winning begin idle running, as shown in Figure 3, can't continue to transmit bigger torsion again, with this with screw element with the appropriate torsion rotational lock.And rotate with respect to first package 1 by second package 2, make it produce linear relative displacement, can change the decrement of first elastic component 5, thereby change the torsion maximum of this turning tool output.In this process, positioning ball 6b is deviate from by positioning groove 1a earlier, after sliding along first package, 1 surface, embed once again among the positioning groove 1a, thereby fix second package 2, rotate with respect to first package 1 in operating process to avoid second package 2.

Yet, in above-mentioned structure, though utilize the design of elastic collar 6a ejection positioning ball 6b to possess easy operation, do not need the advantage that instrument can Fast transforms torsion, thereby the ejection force of elastic collar 6a can not promote the locating effect of positioning ball 6b at the working condition change.The collision that is produced in the process of rotational lock screw element, vibration tend to cause positioning ball 6b to deviate from by positioning groove 1a, cause second package 2 to rotate and linear relative displacement occurs with respect to first package 1, and changed the maximum that torsion is exported, cause the puzzlement in the use.Moreover, elastic fatigue can appear after the elastic collar 6a long period of operation, and the easier thus positioning ball 6b that makes is by deviating among the positioning groove 1a.

The utility model content

In view of above problem, the purpose of this utility model is to provide a kind of torsion to adjust assembly, the maximum that can positively torsion be exported is fixed in default value, can not adjust the maximum that assembly not be subjected to external force collision, vibration or operating mistake and change torsion output because of this torsion.

In order to realize above-mentioned purpose, the utility model has disclosed a kind of torsion and has adjusted assembly, includes:

One first package and one second package, second package is placed in the outside of first package, and works in coordination with screw thread, makes first package and second package produce relative linear displacement by relative rotation.Wherein the first package outside is provided with at least one positioning groove of offering vertically, and second package has at least one through hole, corresponding to positioning groove.

One first braking seat and one second braking seat, place the inner space that is formed jointly by first package and second package, second braking seat makes its mutual engaging against first braking seat, by the strength of friction apply, make first braking seat can drive the rotation of second braking seat, carry out the torsion transmission.

One elastic parts, its two ends are respectively against second package and second braking seat, produce an elastic force with second braking seat push to first braking seat and with it against, by changing the elasticity ejection force of elastic parts, can change second braking seat towards first braking seat against normal pressure, thereby change transferable torsion maximum between first braking seat and second braking seat.

One elastic collar is placed in the outside of second package, and is covered in through hole.In through hole, be placed with a location steel ball, elastic collar can produce an elastic force ejection positioning ball, make positioning ball pass through through hole and partly embed in the positioning groove, and second package can not rotated with respect to first package, the decrement of elastic component is fixed, and the elasticity ejection force of its generation is fixed.

One torsion adjustment ring, be placed in outside second package, and covering elastic collar, torsion adjustment ring is provided with at least one screw, and a screw element is screwed in, and this screw element can press on elastic collar, simultaneously positioning ball is produced a thrust, and make the positioning ball can be by not deviating from the positioning groove, and strengthen the locating effect of positioning ball, fix the torsion output valve that this torsion is adjusted assembly effectively.

According to a scheme of the present utility model, an end of this second package is gradually thin, and forms an opening.

According to a scheme of the present utility model, the edge of this opening forms one towards extension of second enclosure interior and flange in a tubular form, and this first elastic component is a compression spring, and the one end is placed in this flange.

According to a scheme of the present utility model, this first braking seat is arranged at an end of a driving shaft.

According to a scheme of the present utility model, also have on this torsion adjustment ring with so that another screw element screws in and with its front end another screw against this second package outer wall.

Effect of the present utility model is, utilize the front end of screw element to compress elastic collar and compress positioning ball, in positioning ball is deviate from the workplace of positioning groove easily, can strengthen the locating effect of positioning ball, avoid second housing to change the position and influence the maximum that torsion is adjusted the torsion output of assembly second housing.Simultaneously can keep maneuverable convenience again.Also can further remove elastic collar and positioning ball, directly the front end with screw element inserts in the positioning groove, also can produce the effect of fixing second housing, and second housing can not rotated and the generation relative displacement relatively with respect to first housing.

Above about the utility model content explanation and the explanation of following embodiment in order to demonstration with explain principle of the present utility model, and provide patent claim of the present utility model further to explain.

Description of drawings

Figure 1A and Figure 1B are the generalized section that the torsion of known technology is adjusted assembly;

Fig. 2 A is the stereogram of first package in the known technology;

Fig. 2 B is the partial enlarged drawing of Figure 1A;

Fig. 3 adjusts assembly arrival torsion for the torsion of known technology and exports peaked generalized section;

Fig. 4 A and Fig. 4 B are the generalized section of the utility model first embodiment;

Fig. 5 is among the utility model first embodiment, the stereoscopic figure of first package;

Fig. 6 exports peaked generalized section for the utility model first embodiment arrives torsion;

Fig. 7 is among the utility model first embodiment, torsion adjustment ring, elastic collar positioning ball and screw element generalized section radially;

Fig. 8 is the partial enlarged drawing of Fig. 4 A;

Fig. 9 is the partial enlarged drawing of another enforcement state of the utility model first embodiment; And

Figure 10 is the generalized section of the utility model second embodiment.

Wherein, description of reference numerals is as follows:

[known technology]

1 first package 1a positioning groove, 2 second packages

2a through hole 3 first braking seats 4 second braking seats

5 elastic components 6 are adjusted ring 6a elastic collar

6b positioning ball 7 driving shafts 8 housings

9 output shaft 9a tool pieces

[embodiment]

100 housings, 110 driving shafts, 111 first braking seats

120 bearings, 200 first packages, 210 retainer rings

220 screw threads, 230 positioning grooves, 300 second packages

310 openings, 320 screw threads, 330 edge

340 through holes, 400 second braking seats, 410 output shafts

420 Connection Blocks, 430 tool pieces, 500 elastic components

600 elastic collars, 610 positioning balls, 700 torsion adjustment rings

710 screws, 720 screw elements, 730 screw elements

740 screw F normal pressures

The specific embodiment

For making the purpose of this utility model, structure, feature and function thereof there are further understanding, are described in detail as follows in conjunction with the embodiments now.

The torsion that the utility model embodiment is provided is adjusted assembly, it is used so that for example its acrotorque output of adjustment such as electric screw driver (Power Screwdriver), Pneumatic screw driver (Air Screwdriver) of a turning tool is avoided causing tool piece or treating the screw (screw) of rotational lock, the damage of nut (nut) because torsion output is excessive.For convenience of description, present embodiment is an example especially exemplified by an electric screw driver, in order to lock or to unload next screw, the torsion of the utility model preferred embodiment is adjusted the output that assembly is arranged at this electric screw driver, limit the acrotorque output of electric screw driver with this, make the screwdriver head (screwdriver head) can be excessive not impaired because of torsion, also can avoid screw the phenomenon of tooth to occur collapsing, make the screw lock strength can be not excessive and cause object to be processed impaired simultaneously, also can avoid the prefastening load of screw itself too high.

See also Fig. 4 A, Fig. 4 B, Fig. 5 and shown in Figure 6, for the torsion of the utility model first embodiment is adjusted the generalized section of assembly, its structure forms that details are as follows.

One driving shaft 110 is arranged in the housing 100 of a turning tool, and passes one and be arranged at the bearing 120 of housing 100 and be projected into housing 100 outsides, and turning tool is an electric screw driver in the present embodiment.One end of this driving shaft 110 is connected in a pneumatic means or an electro-motor (not shown) that is arranged at housing 100 inside, and the other end passes a bearing 120 and extends to housing 100 outsides, and is connected in one first braking seat 111.

One first package 200, be fixed in housing 100 outsides by a retainer ring 210, wherein first package 200 and bearing 120 coaxial settings, its outer wall has a screw thread 220, and its outer wall also is provided with a plurality of positioning grooves 230, each positioning groove 230 is along the axial direction setting of first package 200, as shown in Figure 5.Positioning groove 230 can be one or more, is example with the present embodiment, and these positioning grooves 230 are three.

One second package 300, the one end is placed in the outside of first package 200, and the other end is tapered, and forms an opening 310.The inwall of second package 300 has screw thread 320, can work in coordination with the screw thread 220 of first package, 200 outer walls and forms the relation of being threadedly engaged with, and makes between first package 200 and second package 300 to realize moving relative to linearity by rotation relatively.The edge of opening 310 is formed with one towards second package, 300 inner extension and flanges 330 in a tubular form.Second package 300 is provided with a plurality of through holes 340, wherein each through hole 340 is positioned on the same radial section of second package 300, and the number of the positioning groove 230 of corresponding first package 200 of its number, can be one or more, each through hole 340 can correspond respectively to different positioning groove 230 simultaneously, with the present embodiment is example, and through hole 340 numbers are three (as shown in Figure 7), to cooperate the number of positioning groove 230.After first package 200 and second package, 300 relative rotation one angles, each through hole 340 can be overlapping with the positioning groove 230 of first package 200.

One second braking seat 400 places the inner space that is formed jointly by first package 200 and second package 300 with first braking seat 111.

One elastic component 500, for example one compresses spring, and the one end is resisted against second braking seat 400, and the other end then is placed in the flange 330 of second package, 300 inside.This elastic component 500 can produce an elastic force, all the time push second braking seat 400 to first braking seat 111, make 400 pairs first braking seats 111 of second braking seat apply a normal pressure, second braking seat 400 can engage mutually with first braking seat 111, second braking seat 400 and first braking seat 111 are rotated jointly, form a torque transmission mechanism, so just can utilize driving shaft 110 to drive an output shaft 410 that is connected in second braking seat 400 and rotate.The front end of this output shaft 410 is provided with a connecting seat 420, and the opening 310 by second package 300 rotates to order about tool piece 430 by the power output of driving shaft 110 so that a tool piece 430 is fixed on the Connection Block 420 as screwdriver head.The size of the normal pressure F that 400 pairs first braking seats of second braking seat 111 produce, can determine the strength size of mutual engaging between first braking seat 111 and second braking seat 400, when torsion that 410 pairs of tool pieces of output shaft apply surpasses engaging power between first braking seat 111 and second braking seat 400, what just can begin between first braking seat 111 and second braking seat 400 to occur staggering moves, as shown in Figure 5, first braking seat, 111 meetings this moment are dallied and can't be driven second braking seat 400, so output shaft 410 just can't be with the torsion turning tool spare 430 greater than predetermined value.And about the size setting of this normal pressure, second package 300 can be rotated with respect to first package 200, make it relative linear displacement occur, change the relative position of first package 200 and second package 300, and then the decrement of change elastic component 500, and the elastic force of pushing second braking seat 400 is changed, thus change this normal pressure F size, to reach the effect of adjusting output shaft 410 maximum outputting torsions.

In order to fix the relative position of first package 200 and second package 300, present embodiment has also comprised an elastic collar 600 and one or more positioning ball 610, wherein each positioning ball 610 is positioned in the through hole 340 of second package 300, the part of positioning ball 610 can embed in the positioning groove 230 of first package 200 by through hole 340, elastic collar 600 then is covered on each through hole 340 and compresses positioning ball 610, with produce a constant thrust with positioning ball 610 push to first package 200 and with it against.Because the part of positioning ball 610 is positioned at the through hole 340 of second package 300, another part embeds in the positioning groove 230 of first package 200, therefore can form fixation, first package 200 can't be produced relative to linear with respect to 300 rotations of second package move, thereby the torsion of having fixed between first braking seat 111 and second braking seat 400 transmits maximum.Apply active force and rotate second package 300, positioning ball 610 is deviate from from positioning groove 230 and rotated second package 300, and change the relative position of itself and first package 200, change torsion and transmit maximum, this moment, positioning ball 610 can move along the surface of first package 200, when arriving the location, embed once again in the positioning groove 230, form fixed effect.

Referring again to Fig. 7 and shown in Figure 8, it is the profile of the part assembly of the utility model embodiment.For fear of in the hand-operated tools operating process, changing the maximum that torsion is exported because factor such as vibration causes positioning ball 610 to deviate from, in embodiment of the present utility model, one torsion adjustment ring 700 also is set, is placed in second package, 300 outsides, and is covered on the elastic collar 600.Torsion adjustment ring 700 is provided with a plurality of screws 710, one screw element 720 is screwed in, the number of screw 710 is identical with the through hole 340 of second package 300, and the position of each screw 710 is corresponding to each through hole 340, make screw element 720 in the process that screws in towards positioning groove 230, its front end can compress positioning ball 610 across elastic collar 600, thereby promote its locating effect, avoid positioning ball 610 and deviate from from positioning groove 230, can directly apply active force simultaneously again and move second package 300 and change relative position with first package 200 because of the vibration in the operating process.The also nonessential number with positioning groove 230 of the number of positioning ball 610 equates that its number can be less than the number of screw element 720.For example can adopt a positioning ball 230, make it be subjected to compressing of a screw element 720,720 of remaining screw elements directly are resisted against elastic collar 600, with the relative position of the balance torsion adjustment ring 700 and second package 300.

Consult shown in Figure 9ly, also can cancel the setting of elastic collar 600 and positioning ball 610, directly the front end with screw element 720 inserts the relative position that fixes second package 300 and first package 200 in the positioning grooves 230 by through hole 340.

Please consult shown in Figure 10 again, a kind of torsion that is provided for the utility model second embodiment is adjusted the generalized section of assembly, its primary structure is roughly identical with first embodiment, its difference is, offer two groups of screws 710,740 on the torsion adjustment ring 700, wherein one group of screw 710 with so that screw element 720 compresses positioning ball 610 across elastic collar 600, can not deviate from positioning ball corresponding to the through hole 340 of second package 300 in the positioning groove 230 by first package 200; The front end that another 740 of screw of group can directly be guided another screw element 730 presses on the outer wall of second package 300, to guarantee that torsion adjustment ring 700 can be with respect to 300 relative motions of second package, so that first group of screw be really corresponding to the through hole 340 of second package 300, and guarantee that each positioning ball 610 can be subjected to compressing of screw element 720.

Though the utility model preferred embodiment is connected in a pneumatic means or electro-motor with driving shaft, obtain the power resources of rotating driveshaft with this, yet it is not to be defined in to be connected to power source, also can be fixed in a lever, directly drive rotation and be applied to the less construction occasion of torsion with manual mode.

Though the utility model discloses by the above embodiments, described embodiment is not in order to limit the utility model.In not breaking away from spirit and scope of the present utility model, the change of being done all belongs to scope of patent protection of the present utility model with retouching.Please refer to the scope of appending claims about the protection domain that the utility model defined.

Claims

1. a torsion is adjusted assembly, it is characterized in that, includes:

One first package has at least one positioning groove, offers along the axial direction of this first package;

One second package has at least one through hole, and this second package is placed in the outside of this first package, and works in coordination and produce linear relative displacement by relative rotation with screw thread;

One first braking seat and one second braking seat place the inside of this first package and this second package, and this second braking seat is against this first braking seat and engaging mutually;

One elastic parts, its two ends be respectively against this second package and this second braking seat, produce one with this second braking seat push to this first braking seat and with it against elastic force;

One torsion adjustment ring is placed in the outside of this second package, and wherein this adjustment ring has the screw of at least one correspondence in this through hole; And

One screw element, it screws in this screw, and this screw element is fixed this first package and this second package by the front end that passes this through hole.

2. torsion as claimed in claim 1 is adjusted assembly, it is characterized in that an end of this second package is gradually thin, and forms an opening.

3. torsion as claimed in claim 2 is adjusted assembly, it is characterized in that, the edge of this opening forms one towards extension of second enclosure interior and flange in a tubular form, and this first elastic component is a compression spring, and the one end is placed in this flange.

4. torsion as claimed in claim 1 is adjusted assembly, it is characterized in that this first braking seat is arranged at an end of a driving shaft.

5. torsion as claimed in claim 1 is adjusted assembly, it is characterized in that, also has on this torsion adjustment ring with so that another screw element screws in and with its front end another screw against this second package outer wall.

6. a torsion is adjusted assembly, it is characterized in that, includes:

One location steel ball be arranged in this through hole, and one is partially submerged into this positioning groove;

One elastic collar is placed in the outside of second package, and is covered on this through hole, and this elastic collar produces the elastic force of this positioning ball of ejection;

One torsion adjustment ring is placed in the outside of this second package, and is covered on this elastic collar, and wherein this torsion adjustment ring has the screw of at least one correspondence in this through hole; And

One screw element, it screws in this screw, and front end compresses this elastic collar and compresses this positioning ball and fix this first package and this second package.

7. torsion as claimed in claim 6 is adjusted assembly, it is characterized in that an end of this second package is gradually thin, and forms an opening.

8. torsion as claimed in claim 7 is adjusted assembly, it is characterized in that, the edge of this opening forms one towards extension of second enclosure interior and flange in a tubular form, and this first elastic component is a compression spring, and the one end is placed in this flange.

9. torsion as claimed in claim 6 is adjusted assembly, it is characterized in that this first braking seat is arranged at an end of a driving shaft.

10. torsion as claimed in claim 6 is adjusted assembly, it is characterized in that, also has on this torsion adjustment ring with so that another screw element screws in and with its front end another screw against this second package outer wall.