CN201881328U

CN201881328U - Screwdriver torque adjusting structure

Info

Publication number: CN201881328U
Application number: CN2010206009933U
Authority: CN
Inventors: 林健国
Original assignee: Yih Cheng Factory Co Ltd
Current assignee: Yih Cheng Factory Co Ltd
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2011-06-29
Anticipated expiration: 2020-11-10

Abstract

The utility model relates to a screwdriver torque adjusting structure, which is characterized in that a mandrel is mounted in a hollow grip partially, and a transmission mechanism, a driven component and an adjusting device are combined to form the torque adjusting structure. The mandrel outputs a set torque value, a protection mechanism prevents the torque from being affected and changed by external force, and accordingly extra manufacturing cost is reduced and the screwdriver torque adjusting structure is convenient to use and has functions such as calibrating.

Description

The bottle opener moment of torsion is adjusted structure

Technical field

The utility model relates to the technical field of hand-held tool, refers to a kind of adjustment structure of bottle opener moment of torsion especially.

Background technology

TaiWan, China is announced the patent case No. 335757, disclose a kind of screwdriver that moment of torsion is adjusted function that possesses, be a brake block and a Slave Block that holds meshing relation at a hollow handle, then place a spring and a restraining position ring block, compel to support the openend that part is locked handle with one, force both ends of the spring to offset with Slave Block, restraining position ring block respectively, after group is the moment of torsion guiding mechanism altogether, and passed one by one by a screwdriver rod that appears the handle blind end.

This screwdriver utilization is compeled to support the degree of depth that part is locked lever, influences the extruding degree of restraining position ring block to spring, changes the torque value that spring resists Slave Block, reaches purpose and the function of adjusting moment of torsion.But, following shortcoming is but arranged in the use:

The first, hold the direct application of force of screwdriver, the urgent part that supports can change torque value because of false touch, so need put an outer sleeve body in the lever outside, uses protection moment of torsion guiding mechanism and not influenced by external force, causes the production cost increase and the market competitiveness of not having.

When the second, the user wants to adjust the moment of torsion of screwdriver, necessary removal outer sleeve body, twisting compels to support part to required torque value, then outer sleeve body is enclosed within once again outside the lever, increases the puzzlement in the use on foot.

Three, this moment of torsion guiding mechanism lacks the measure of proofreading and correct.

In view of this, the inventor deeply inquires into the problem of prior art, and with the research and development of being engaged in related industry for many years and the experience of manufacturing, actively seeks solution, develops a kind of bottle opener moment of torsion finally and adjusts structure, commonly uses the problem of creation with improvement.

The utility model content

The purpose of this utility model is to provide a kind of bottle opener moment of torsion to adjust structure, adopts and saves means from damage, prevents that the bottle opener moment of torsion is influenced by external force and changes, and reduces the cost of manufacture of additional member, reaches the easy-to-use function such as correction that has concurrently.

For reaching above-mentioned purpose, the utility model adopts following technical scheme:

A kind of bottle opener moment of torsion is adjusted structure, is the handle the inside that a mandrel part is installed in a hollow; It comprises: a transmission mechanism is assembled in handle inside to provide mandrel required moment of torsion; One driven subassembly is assemblied in mandrel and is positioned at the paragraph of handle inside and offsets with torque drive mechanism; One adjusting device is installed in handle the place ahead and turns, and related driven subassembly moves along the mandrel length direction, provides the torque value of mandrel to adjust transmission mechanism.

This transmission mechanism comprises: a spring is enclosed within the mandrel periphery; One torque transmission piece is assembled in mandrel and offsets with spring one end; This driven subassembly comprises: one adjusts screw, is enclosed within the mandrel periphery, and it is inner and offset with the other end of this spring that it is bolted in handle; Two fasteners embed mandrel and level off to the position of adjusting the screw two ends, make mandrel and adjust screw and form association to each other; This adjusting device comprises: a mandrel end cap, it is peripheral and be buckled in handle the place ahead, the relative handle rotation of related adjustment screw movably to be enclosed within mandrel.

This torque transmission piece is provided with a polygonal hole in the middle part, possess the socket relation with polygonal a section of forming in mandrel; This adjustment screw is shaped one outstanding polygon section vertically, inserts one and is depressed in the polygon groove of mandrel end cap middle part.

This transmission mechanism also comprises: a torsion escape piece, and it is peripheral and between spring and torque transmission piece to be enclosed within mandrel, and torsion escape piece and torque transmission piece possess concavo-convex matching relationship to each other; One transmission holder is secured in the inner position of torque transmission piece relatively of handle, and forms an internal thread at transmission holder inwall; One sets screw, locks the transmission holder and supports the torque transmission piece; This driven subassembly also comprises: one adjusts holder, is secured in handle inside, possesses the relation of being spirally connected with the adjustment screw; This adjusting device also comprises: a snap ring, be enclosed within mandrel end cap periphery, and the two agrees with mutually and possesses association.

This torsion escape piece appearance at least one pair of protuberance that is shaped, and the transmission holder is absorbed at least one pair of elongated slot at inwall vertically, allows protuberance to insert in the corresponding elongated slot; This snap ring inner face some rib grooves that cave in, and mandrel end cap and handle end are enclosed the some ribs of circular row respectively outside, allow snap ring along the displacement of rib direction.

This snap ring outstanding guard ring portion that is shaped covers on the peripheral cap of mandrel end cap, and one of two annular grooves that are arranged with by guard ring portion inner face interlock with the some prominent points in cap edge.

This transmission mechanism and driven subassembly add a ball bearing separately, and it is peripheral and between the torque transmission piece with set between the screw that wherein a ball bearing is enclosed within mandrel, and it is peripheral and between adjusting between screw and the spring that another ball bearing is enclosed within mandrel.

This handle has a back cap, covers the openend that handle differs from mandrel.

This mandrel has a bottle opener connector, is enclosed within the mandrel end and can inserts for screwdriver head; One scale is indicated in the mandrel appearance.

Adopt said structure, the utility model can stop non-normal influence power to change moment of torsion, possesses the effect that torque value is saved from damage, especially, screwdriver uses after the length, can also raise the back cap, by the degree of depth of instrument calibration setup screw at the transmission holder, be returned to the torque value that dispatches from the factory at that time, can reduce the cost of manufacture that adopts additional member, can reach the easy-to-use purpose that has functions such as correction concurrently really.

Following conjunction with figs. elaborates to the utility model.

Description of drawings

Fig. 1 is a perspective view of the present utility model;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is an assembled sectional view of the present utility model;

Fig. 4 is an assembled sectional view of the present utility model, shows the action of handle adjustment moment of torsion.

The main element symbol description

100 screwdrivers

10 handles, 11 openends, 12 back caps

13 ribs, 14 shallow recess, 20 mandrels

23 polygonal sections of 21 bottle opener connectors, 22 scales

24 grooves, 30 transmission mechanisms, 31 springs

32 set screw 40 transmission holders 41 internal threads

42 elongated slots, 50 torque transmission pieces, 51 polygonal holes

52 ball bearings, 53 torsion escape pieces, 54 protuberances

60 driven subassemblies 61 are adjusted holder 62 ball bearings

63 fasteners 70 are adjusted 71 polygon sections on screw

72 fasteners, 80 adjusting devices, 81 mandrel end caps

82 cylindrical sections, 83 ring ribs, 84 polygon grooves

85 ribs, 86 caps, 87 prominent points

90 snap rings, 91 rib grooves, 92 guard ring portions

93 annular grooves.

The specific embodiment

Cooperate Fig. 1 to shown in Figure 4, the screwdriver 100 of present embodiment, the local mandrel 20 of handle 10 coatings by hollow is formed, in openend 11 the insides that handle 10 bores are bigger transmission mechanism 30 is installed, covering back cap 12 is then sealed, rib 13 fit adjustment devices 80 with less openend 11 peripheries of bore fit together again, cause living association to being assemblied in the driven subassembly 60 that mandrel 20 is positioned at handle 10 inner paragraphs, and then resist torque drive mechanism 30.

This mandrel 20 has scale 22 near driven subassembly 60 places, and two axial ends forms polygonal section 23 respectively, and an axle head wherein exposes handle 10 outsides, is able to socket bottle opener connector 21.

Whole transmission mechanism 30 is passed by mandrel 20 latter ends, and tubular transmission holder 40 is considered as the basis, one end is locked along internal thread 41 and is set screw 32, end is filled in torsion escape piece 53 according to the guiding function of 42 pairs of protuberances 54 of elongated slot in addition, by promoting, spring 31 can produce the effect of forcing to do one's bidding to the torque transmission piece 50 and the ball bearing 52 of inserting transmission holder 40 the insides towards setting screw 32 displacements.This transmission holder 40 is incorporated into handle 10 inside by ejection forming technique, because rough appearance, except the two was difficult for breaking away from, transmission holder 40 also can't rotate arbitrarily relative to handle 10.

These torque transmission piece 50 inner faces are polygonal hole 51, agree with mutually for polygonal section 23 with mandrel 20 tail ends, except with mandrel 20 torque transfer to torsion escape piece 53, can also accept to set screw 32 and promote and do displacement at polygonal section 23 along mandrel 20 length directions.Wherein, this torque transmission piece 50 possesses concavo-convex matching relationship each other with torsion escape piece 53, can be during less than moment of torsion at elastic force, just like escape constantly as the tooth of bridle joint, and then end 20 pairs of workpiece of mandrel (scheming not shown) outputting torsion.

Same, utilize ejection forming technique to be incorporated into the assembly of handle 10 inwalls, the tubular adjustment holder 61 of driven subassembly 60 by the rough design of appearance, makes and adjusts holder 61 along with handle 10 start together but is difficult for breaking away from addition.Adjustment screw 70 is being spirally connected in adjustment holder 61 the insides, go out towards adjusting device 80 1 distal process polygon section 71, end in contact ball bearing 62 in addition, passed by mandrel 20 simultaneously, by the

axle body fastener

63,72 that two grooves 24 are inlayed that is shaped, resist respectively polygon section 71 with ball bearing 62, restriction driven subassembly 60 is assemblied in mandrel 20 and is positioned at the paragraph of handle 10 inside and is difficult for separately, cause adjust screw 70 related mandrels 20 can be along axially making synchronous shift.

As for adjusting device 80, be with mandrel end cap 81 shapings one cylindrical section 82 than minor diameter, insert more small-bore openend 11 the insides, handle 10 the place aheads, block a circle shallow recess 14 of handle 10 inwalls depression by shaft protuberance one ring rib 83, and entangle aforementioned polygon section 71 outside with the polygon groove 84 that is absorbed in cylindrical section 82 end faces, can keep mandrel end cap 81 related adjustment screw 70 relative handles 10 and rotate synchronously.

This snap ring 90 is crossed on the mandrel end cap 81 peripheral corresponding ribs 85 with inner face rib groove 91, under the condition of aligned openings end 11 exterior rib 13, because of external force is drawn close in handle 10, by the mechanism of saving from damage that rib groove 91 is crossed over two

ribs

13,85 simultaneously, stop snap ring 90 to drive mandrel end cap 81 and rotate around handle 10 openends 11.The guard ring portion 92 that these snap ring 90 shapings one are given prominence to covers on the mandrel end cap 81 outer caps 86 that make a circle just, cooperates the some prominent points 87 that protrude in cap 86 edges to interlock outwardly with one of guard ring portion 92 inner face twice annular grooves 93, and help snap ring 90 is obtained locating effect.

During use, must push away snap ring 90 toward mandrel end cap 81,, can also order about the rib 13 that rib groove 91 is no longer crossed over handle 10, and then remove the security limitations of adjusting device 80 except allowing the prominent point 87 in cap 86 edges fasten other the road annular groove 93.Then, rotate snap ring 90 related mandrel end caps 81 and drive 70 rotations of adjustment screw, convert mandrel 20 displacements to, change the size of spring 31 outputting torsion values according to adjusting holder 61 length directions.

Finish the torque adjustment operation, can under rib 85 guiding, snap ring 90 be moved back to handle 10, make rib groove 91 cross over rib 13 once again, prevent mandrel end cap 81 to rotate relative to handle 10 together with mandrel 20.

Screwdriver 100 this moment; can insert screwdriver head (scheming not shown) suitably at the bottle opener connector 21 of mandrel 20 ends; workpiece is carried out screw lock or unscrewed operation; the elastic force of bestowing up to torsion escape piece 53 is during less than the moment of torsion of torque transmission piece 50 outputs; torsion escape piece 53 is escape constantly; end torsion and be passed to mandrel 20, the protection workpiece avoids impaired.

Especially, screwdriver 100 uses after the length, can also raise back cap 12, by instrument calibration setup screw 32 degree of depth at transmission holder 40, is returned to the torque value that dispatches from the factory at that time.So present embodiment stops non-normal influence power to change moment of torsion, possesses the effect that torque value is saved from damage, reduces the cost of manufacture of additional member, reach the easy-to-use function such as correction that has concurrently.

The foregoing description only is explanation the utility model, and non-for limiting the utility model, the various variations that this area related personnel derives from the foregoing description, modification and application are all in category of the present utility model.

Claims

1. a bottle opener moment of torsion is adjusted structure, is the handle the inside that a mandrel part is installed in a hollow; It is characterized in that: comprise

One transmission mechanism is assembled in handle inside to provide mandrel required moment of torsion;

One driven subassembly is assemblied in mandrel and is positioned at the paragraph of handle inside and offsets with torque drive mechanism;

One adjusting device is installed in handle the place ahead and turns, and related driven subassembly moves along the mandrel length direction, provides the torque value of mandrel to adjust transmission mechanism.

2. bottle opener moment of torsion as claimed in claim 1 is adjusted structure, it is characterized in that:

This transmission mechanism comprises: a spring is enclosed within the mandrel periphery; One torque transmission piece is assembled in mandrel and offsets with spring one end;

This driven subassembly comprises: one adjusts screw, is enclosed within the mandrel periphery, and it is inner and offset with the other end of this spring that it is bolted in handle; Two fasteners embed mandrel and level off to the position of adjusting the screw two ends, make mandrel and adjust screw and form association to each other;

This adjusting device comprises: a mandrel end cap, it is peripheral and be buckled in handle the place ahead, the relative handle rotation of related adjustment screw movably to be enclosed within mandrel.

3. bottle opener moment of torsion as claimed in claim 2 is adjusted structure, and it is characterized in that: this torque transmission piece is provided with a polygonal hole in the middle part, possesses the socket relation with polygonal a section of forming in mandrel; This adjustment screw is shaped one outstanding polygon section vertically, inserts one and is depressed in the polygon groove of mandrel end cap middle part.

4. bottle opener moment of torsion as claimed in claim 2 is adjusted structure, it is characterized in that:

This transmission mechanism also comprises: a torsion escape piece, and it is peripheral and between spring and torque transmission piece to be enclosed within mandrel, and torsion escape piece and torque transmission piece possess concavo-convex matching relationship to each other; One transmission holder is secured in the inner position of torque transmission piece relatively of handle, and forms an internal thread at transmission holder inwall; One sets screw, locks the transmission holder and supports the torque transmission piece;

This driven subassembly also comprises: one adjusts holder, is secured in handle inside, possesses the relation of being spirally connected with the adjustment screw;

This adjusting device also comprises: a snap ring, be enclosed within mandrel end cap periphery, and the two agrees with mutually and possesses association.

5. bottle opener moment of torsion as claimed in claim 4 is adjusted structure, it is characterized in that: this torsion escape piece appearance at least one pair of protuberance that is shaped, and the transmission holder is absorbed at least one pair of elongated slot at inwall vertically, allows protuberance to insert in the corresponding elongated slot; This snap ring inner face some rib grooves that cave in, and mandrel end cap and handle end are enclosed the some ribs of circular row respectively outside, allow snap ring along the displacement of rib direction.

6. bottle opener moment of torsion as claimed in claim 5 is adjusted structure, it is characterized in that: this snap ring outstanding guard ring portion that is shaped, cover on the peripheral cap of mandrel end cap, and one of two annular grooves that are arranged with by guard ring portion inner face interlock with the some prominent points in cap edge.

7. bottle opener moment of torsion as claimed in claim 4 is adjusted structure, it is characterized in that: this transmission mechanism and driven subassembly add a ball bearing separately, it is peripheral and between the torque transmission piece with set between the screw that wherein a ball bearing is enclosed within mandrel, and it is peripheral and between adjusting between screw and the spring that another ball bearing is enclosed within mandrel.

8. adjust structure as claim 1,2,4 or 5 described bottle opener moments of torsion, it is characterized in that: this handle has a back cap, covers the openend that handle differs from mandrel.

9. adjust structures as claim 1,2,4 or 7 described bottle opener moments of torsion, it is characterized in that: this mandrel has a bottle opener connector, is enclosed within the mandrel end and can inserts for screwdriver head; One scale is indicated in the mandrel appearance.