CN101306525B

CN101306525B - Torque wrench structure

Info

Publication number: CN101306525B
Application number: CN2007101069235A
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-15
Filing date: 2007-05-15
Publication date: 2011-06-15
Anticipated expiration: 2027-05-15
Also published as: CN101306525A

Abstract

The invention relates to a torque spanner structure. A main body thereof includes a handle portion and a holding portion, wherein the handle portion includes an inner handle and an outer tube, the inner handle is assembled with the outer tube, a head portion is arranged at one end of the inner handle, and one end of the outer tube is combined with the holding portion; a plurality of ridges facilitating to hold steadily are arranged on a radial face of the holding portion, the outer tube includes an accommodating space for accommodating an elastic body, a bearing column, a sleeve part and a sleeve element, the bearing column is in a cylinder shape and in the outer tube and together with the outer tube installed in an accommodating hole of the holding portion, a block is arranged on the radial face and slides in a notch of the outer tube and is embedded therein, the sleeve part and the sleeve element are assembled, the sleeve element is a hollow cylinder, the radial face of the sleeve element is a smoothing state, an axial direction face at one end has a slight inclination and is pivoted with one roller, and is propped against the elastic body, so that the roller on the sleeve part is contacted with one end of the inner handle.

Description

Torque spanner structure

Technical field

The present invention relates to a kind of torque spanner structure.

Background technology

The structure of existing spanner be a lever front end have one can with the head of screw tightening inlay card, producing the torque drive head in the lever application of force whereby screws in screw tightening in the object, thereby the threaded portion of screw tightening with made two things fixed to one another by being locked the deposits yields bond stress, when yet the user operates this kind spanner, can only impose comparatively subjective strength by operating experience at ordinary times, if use by the people who is unfamiliar with this operation, the application of force is with different, naturally also influence constant intensity and produce can't expected result, therefore have the dealer to design the torque spanner of predeterminable torque value and tool alarm function.

Existing torque spanner structure sees also TaiWan, China M308833 number, " torque spanner structure improvement " patent, it mainly is to be provided with in a medicament to pull body, movable block, the pushing block of an elastic parts and a tool screw, be to be embedded with several balls on this movable block sagittal plane, and establish the screwhole spiro bonding of a screw rod and push rod, and the relative position of sleeve and pushing block is established a guiding duct and an index respectively, index is held be embedded in the guiding duct to limit the turn of pushing block, the torsion of commensurate indicates moment and the epimere both side surface in guiding duct is provided with not, the sheathed limited part in the lower end of screw rod, and the inwall of sleeve be arranged with an annular groove for a clasp nested and form a block seat for the limited part of screw rod against being positioned in the sleeve, make pushing block just paste being butted on the limited part and the elastic parts pivot is placed in adjust screw rod butted in the pushing block end face, the lower end section of screw rod is established a drive section and the bottom surface provides a locking hole, and establish one and adjust handle pivot and be placed in the sleeve hypomere outside, make the exposed upper end of adjusting handle of epimere of index match with the torsion sign moment of both sides, the limiting groove that provides a tool through hole in the lower end of adjusting handle just holds embedding for the drive section of screw rod, and the locking part of establishing tool retaining head is established along the through hole lock that up matches with locking hole, utilize the drive section of screw rod to be nested in the limiting groove of adjusting handle and be subjected to locking part lock knot location and under the stop limits of block seat, make the adjustment handle can drive screw rod original place turn in sleeve, rise or descend with the screw that drives pushing block direction straight line, make the torsion of index indicate moment and adjust torque value in guiding both sides, duct, the drive lower edge of pushing block along the screw rod turn.

Yet, though the existing torque spanner of this kind can make movable block be subjected to butted and slide in sleeve, but the ball of its sagittal plane contacts with the tube wall of sleeve pipe, if application of force inequality or elastic parts slightly is offset when using spanner, then be easy to generate leverage, making movable block is that fulcrum produces skew by ball, and the stress value that the part ball contacts with tube wall rises, make its wearing and tearing even more serious, may force ball to break away from movable block what is more, and spanner is damaged, reduce service life greatly, therefore as a complete unit, its poor practicability still has the necessity that is improved.

Summary of the invention

Technical problem underlying to be solved by this invention is to provide a kind of torque spanner structure, can reduce torque spanner intraware wear intensity, increases stability, improves service life.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of torque spanner structure, its body comprises a shank and a grip part, this shank comprises a handle and an outer tube in one, interior handle and outer tube assembling, interior handle one end is a head, outer tube one end and grip part combination, several burrs are arranged on the sagittal plane of grip part, and burr is convenient to firm gripping, and outer tube comprises an accommodation space, accommodation space is inserted an elastomer, one cover portion, one external member and one is held post, it is cylindric holding post, is installed up in the containing hole of grip part with outer tube in the lump after inserting outer tube, and a fixture block is arranged on its sagittal plane, fixture block is in the draw-in groove slippage and the inlay card of outer tube, cover portion and external member group are established, and external member is a hollow columnar, and sagittal plane is a smooth state, one end axial vane surface slightly the tool gradient and with one roll part and articulate, and be subjected to the ball that rolls part and interior handle one end in contact of elastomeric butted external member; Cover portion protection external member, and the wear intensity of reduction and outer tube contact position and increase stability are to increase the service life.

Aforesaid torque spanner structure, wherein cover portion is the material softer than external member.

Aforesaid torque spanner structure, wherein cover portion is copper.

Aforesaid torque spanner structure, wherein cover portion is the cylinder of cup-shaped, for holding external member.

This external member sagittal plane is a smooth state; after inserting cover portion, can be obedient to its inner face; and cover portion is with the material manufacturing soft than external member; except the external member that protection is inserted; and when it slides in outer tube; make it produce micro-deformation and more be the shape of section in the corresponding outer tube by the characteristic of soft materials, and reduce the wear intensity of sliding in it and increase stability, and the life-span that body is used increases.

The present invention is further described below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is the exploded perspective schematic diagram of each parts of torque spanner structure of the present invention.

Fig. 2 is the generalized section of torque spanner structure of the present invention.

Fig. 3 is the schematic diagram of torque spanner structure cover of the present invention portion tool bottom.

Fig. 4 is that a schematic diagram of bottom is not had in torque spanner structure cover of the present invention portion.

Fig. 5 is the three-dimensional appearance perspective view of torque spanner structure of the present invention.

The number in the figure explanation:

1---body 2---grip part

21---containing hole

22---burr 3---shank

31---interior handle

311---heads 312---perforation a

313---ball

32---outer tube 321---accommodation space

322---perforation b

323---fixture 324---graduation apparatus

325---draw-in groove

326---external members 3261---are rolled part

327---cover portion

328---elastomer 329 holds post

3291---fixture block

The specific embodiment

The invention relates to a kind of torque spanner structure, see also shown in Figure 1ly that its body 1 of this electronic torque wrench structure mainly comprises a grip part 2 and a shank 3, wherein:

Axially past interior formation one containing hole 21 of these grip part 2 one ends, and have several burrs 22 on the sagittal plane of grip part 2, this burr 22 can be convenient to the firm gripping of user and not get loose;

This shank 3 comprises a handle 31 and an outer tube 32 in one, handle 31 1 end tools one head 311 in this, and this head 311 is established usefulness for lock, contiguous head 311 place's tools one perforation a312, interior handle 31 other ends axially are tool one balls 313; Tool one accommodation space 321 in this outer tube 32, the one end is to wear to the containing hole 21 of grip part 2, and the other end wears for interior handle 31, and outer tube 32 1 end adjacent shafts are that a perforation b322 is set to locating, therefore wear to perforation a312 by perforation b322 by a fixture 323, interior handle 31 can be articulated with outer tube 32 and fix, and handle 31 also can there be some swings in making in the accommodation space 321 of outer tube 32; One graduation apparatus 324 and a draw-in groove 325 are set on the sagittal plane of outer tube 32, whereby, when outer tube 32 wears to the grip part 2 accommodation space 321, just make the axial vane surface of grip part 2 align its torque value with the graduation apparatus 324 of outer tube 32 in order to represent to preset;

Insert an external member 326, a cover portion 327, an elastomer 328 and in the accommodation space 321 of this outer tube 32 and hold post 329, wherein:

This holds post 329 for cylindric, and after inserting outer tube 32, be installed up in the containing hole 21 of grip part 2 with outer tube 32 in the lump, has a fixture block 3291 on its sagittal plane, this fixture block 3291 can be in draw-in groove 325 slippages and the inlay card of outer tube 32, when forcing in grip part 2 when itself and outer tube 32 are relatively moved, the inlay card position of fixture block 3291 makes the axial vane surface of grip part 2 align with graduation apparatus 324 and learns at that time scale value, and therefore the scale that reads is application of force value;

This cover portion 327 is the cylinder of cup-shaped, its both sides are slightly to be inner concavity, and cover portion 327 bottoms are illustrated in figure 3 as the design of tool bottom, so elastomer 328 can be butted in its bottom, or its bottom becomes the hollow out state as shown in Figure 4, so this elastomer 328 can pass cover portion 327; Cover portion 327 is for holding this external member 326, and it is to be soft material manufacturing than external member, as copper etc.; This external member 326 is a hollow columnar, and sagittal plane is a smooth state, and one end axial vane surface is the tool gradient slightly, and with one roll part 3261 and articulate;

These elastomer 328 1 ends are with to hold post 329 axial vane surfaces butted, and the bottom of the other end and cover portion 327 is butted, make cover portion 327 whereby and hold post 329 and be subjected to the suitable distance of elastic reaction maintenance; When forcing in grip part 2 when itself and outer tube 32 are relatively moved, will force elastomer 328 to shorten, so cover portion 327 is subjected to the effect of an elastic-restoring force, and be passed to make on the external member 326 ball 313 that rolls part and interior handle 31 bottom surfaces compel to.

When combination, be extremely shown in Figure 4 as Fig. 2, an end of this outer tube 32 plugs to the containing hole 21 of grip part 2, and holds post 329 behind the accommodation space 321 of inserting outer tube 32, proper and outer tube 32 is located in the containing hole 21, and the fixture block 3291 of its sagittal plane is positioned at draw-in groove 325 places of outer tube 32.

When this elastomer 328 is inserted the accommodation space 321 of outer tube 32 with cover portion 327, one end of elastomer 328 is with to hold post 329 1 ends butted, and the bottom surface of the other end and cover portion 327 is butted, elastic-restoring force by elastomer 328 makes cover portion 327 and holds the suitable distance of post 329 maintenances, and this external member 326 can be inserted in the cover portion 327, and makes and roll part towards the end with respect to cover portion 327 bottom surfaces on it.

When this interior handle 31 wears to the accommodation space 321 of outer tube 32, utilize fixture 323 to wear and be positioned at handle 31 and the perforation a312 of outer tube 32 and the b322 that bores a hole, 32 one-tenth one of interior handle 31 and outer tubes can be articulated and fixing relation, therefore handle 31 can have swing slightly in the accommodation space 321 of outer tube 32, and axial ball 313 parts that roll proper and on the external member 326 of interior handle 31 1 ends contact.

When using, bestowing a default strength relatively moves grip part 2 and outer tube 32, elastomer 328 is shortened and the reaction force of tool elastic recovery by external force, therefore cover portion this reaction force of 327 indirect transfer is to external member 326 places, and making the ball 313 that rolls part and interior handle 31 be urgent state, this moment, grip part 2 trimmed the promptly default for this reason strength value in graduation apparatus 324 places;

As user when 2 application of force drive head 311 lock is established object in the grip part, this head 311 also bears a counteractive torsion, since ball 313 with roll the strength effect that part preset and form urgent state, when counteractive torque value is no more than default strength, ball 313 can with roll part and keep urgent state, but when counteractive torque value surpasses default strength, handle 31 swing makes ball 313 and rolls part and separate in will forcing, and interior handle 31 touches in the tube wall of outer tube 32 and sends the sound, and this application of force that can warn the user has reached default strength value.

As seen from the above embodiment, these external member 326 sagittal planes are smooth state, can be obedient to its inner face after inserting cover portion 327; Should cover portion 327 be again with the material manufacturing softer than external member; except can protecting the external member of inserting 326; and when it slides in outer tube 32; can make it produce micro-deformation by the characteristic of soft materials and more be the shape of sections in the corresponding outer tube 32; and be reduced to the wear intensity of sliding in it and increase stability, and the life-span that body 1 is used increases.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.

In sum, the present invention is on structural design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant patent of invention important document is so mention application in accordance with the law.

Claims

1. torque spanner structure, its body comprises a shank and a grip part, it is characterized in that:

This shank (3) comprises a handle (31) and an outer tube (32) in one, should assemble with this outer tube (32) by interior handle (31), interior handle (31) one ends are a head (311), axial tool one ball of interior handle (31) other end (313), outer tube (32) one ends and this grip part (2) combination; Have several burrs (22) on the sagittal plane of grip part (2), this burr (22) can be convenient to firm the gripping and not get loose,

This outer tube (32) comprises an accommodation space (321), this accommodation space (321) is inserted an elastomer (328), one cover portion (327), one external member (326) and one is held post (329), this holds post (329) for cylindric, and after inserting outer tube (32), be installed up in the containing hole (21) of grip part (2) with outer tube (32) in the lump, has a fixture block (3291) on its sagittal plane, this fixture block (3291) can be in draw-in groove (325) slippage and the inlay card of outer tube (32), this cover portion (327) establishes with this external member (326) group

This external member (326) is a hollow columnar, sagittal plane is a smooth state, one end axial vane surface is the tool gradient slightly, and with one roll part (3261) and articulate, and be subjected to the butted of elastomer (328) that the part (3261) that rolls on the external member (326) is contacted with the ball (313) of interior handle (31) one ends.

2. torque spanner structure according to claim 1 is characterized in that: described cover portion is than the soft material of external member (326).

3. torque spanner structure according to claim 1 is characterized in that: described cover portion (327) is for copper.

4. torque spanner structure according to claim 1 is characterized in that: described cover portion (327) is the cylinder of cup-shaped, for holding external member.