CN115106969B - Torque spanner - Google Patents
Torque spanner Download PDFInfo
- Publication number
- CN115106969B CN115106969B CN202210138441.2A CN202210138441A CN115106969B CN 115106969 B CN115106969 B CN 115106969B CN 202210138441 A CN202210138441 A CN 202210138441A CN 115106969 B CN115106969 B CN 115106969B
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- China
- Prior art keywords
- opposite
- elastic piece
- groove
- strain gauge
- receiving groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
Abstract
The invention provides a torque wrench, which comprises a body and a measuring device, wherein the body comprises a head part and a rod part, one end of the rod part is connected with the head part, the measuring device comprises a strain gauge seat and a strain gauge, the strain gauge seat is arranged in the rod part, the strain gauge seat is provided with a first groove and a deformation part adjacent to the first groove, the strain gauge is connected with the deformation part, and the torque data measured by the measuring device can be accurate through the structure of the torque wrench.
Description
Technical Field
The present disclosure relates to wrenches, and particularly to a torque wrench.
Background
Please refer to taiwan patent No. I625202, which discloses an electronic torque wrench with a sensing structure, comprising: a tube, a working head and a sensing element; the working head further comprises: the joint part is fixed in the pipe body from the front end of the pipe body, and the head part is positioned at the front end of the pipe body; the sensing piece is arranged on the peripheral wall of the pipe body.
Generally, the electronic torque wrench is operated by arranging a strain gauge on a wrench handle tube or other components, and obtaining a torque value outputted by the wrench by measuring strain and converting the strain by a specific formula.
Disclosure of Invention
The invention mainly aims to provide a torque wrench which can overcome the defects in the prior art.
The invention provides a torque wrench, which comprises a body and a measuring device, wherein the body comprises a head part and a rod part, one end of the rod part is connected with the head part, the measuring device comprises a strain gauge seat and a strain gauge, the strain gauge seat is arranged in the rod part, the strain gauge seat is provided with a first groove and a deformation part adjacent to the first groove, the strain gauge is connected with the deformation part, and the torque data measured by the measuring device can be accurate through the structure of the wrench.
The strain gauge seat is provided with a propping part which is in a bulge structure and the surface of the propping part is in a convex cambered surface shape.
The inner periphery of the first groove is provided with a first surface and a second surface, the first surface faces the second surface, one side of the deformation part adjacent to the first groove is provided with a third surface, and the third surface is arranged between the first surface and the second surface.
The strain gauge seat is provided with a first pin and a second pin, the first groove is arranged between the first pin and the second pin, the first pin and the second pin are respectively connected with the deformation part in an integrated structure, the first surface is arranged at one side of the first pin adjacent to the first groove, the second surface is arranged at one side of the second pin adjacent to the first groove, and the first surface and the second surface are respectively connected at two opposite sides of the third surface.
The body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the first foot is propped against the tripping mechanism, the second foot is propped against the elastic piece, the strain gauge is connected on one side of the deformation part opposite to the third surface and faces the inner periphery of the rod part, and the third surface is a concave cambered surface.
The trip mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the surface of the abutting part is in a spherical surface shape, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, the first foot is propped against the adjusting mechanism, the second foot is propped against the elastic piece, the strain gauge is connected on one side of the deformation part opposite to the third surface and faces the inner periphery of the rod part, and the third surface is a concave cambered surface.
The adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the first foot opposite to the first groove, the surface of the abutting part is spherical, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The strain gauge seat is provided with a second groove and a third groove, the second groove is arranged between the first surface and the third surface, so that the first surface is not connected with the third surface, the second groove is communicated with the first groove, the third groove is arranged between the second surface and the third surface, so that the second surface is not connected with the third surface, and the third groove is communicated with the first groove.
The strain gauge seat is provided with a first pin and a second pin, the first groove is arranged between the first pin and the second pin, the first pin and the second pin are respectively connected with the deformation part in an integrated structure, the first surface is arranged at one side of the first pin adjacent to the first groove, and the second surface is arranged at one side of the second pin adjacent to the first groove.
The body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the first foot is propped against the tripping mechanism, the second foot is propped against the elastic piece, and the strain gauge is connected to the third surface and faces the inner periphery of the rod part.
The trip mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, the first foot is propped against the adjusting mechanism, the second foot is propped against the elastic piece, and the strain gauge is connected to the third surface and faces the inner periphery of the rod part.
The adjusting mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, one side of the first foot opposite to the tripping mechanism and one side of the second foot opposite to the tripping mechanism respectively lean against the elastic piece, the third surface faces the inner periphery of the rod part, the strain gauge faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece leans against the tripping mechanism.
The jump-off mechanism is provided with a receiving groove, the propping part is arranged at one side of the deformation part opposite to the strain gauge, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove.
The body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged at one side of the tripping mechanism opposite to the head part, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged at one side of the elastic piece opposite to the tripping mechanism, one side of the first foot opposite to the adjusting mechanism and one side of the second foot opposite to the adjusting mechanism are propped against the elastic piece respectively, the third surface faces the inner periphery of the rod part, the strain gauge faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece is propped against the adjusting mechanism.
The adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, one end of the first foot opposite to the deformation part and one end of the second foot opposite to the deformation part are propped against the elastic piece respectively, the strain gauge is connected to the third surface and faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece is propped against the adjusting mechanism.
The adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the surface of the abutting part is cylindrical, the abutting part extends along the radial direction of the rod part, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
The body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged at one side of the tripping mechanism opposite to the head, one end of the first foot opposite to the deformation part and one end of the second foot opposite to the deformation part respectively lean against the elastic piece, the strain gauge is connected to the third surface and faces the elastic piece, and one side of the strain gauge opposite to the elastic piece leans against the tripping mechanism.
The jump off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the propping part comprises a containing groove and a propping piece, the containing groove is concavely arranged on the deformation part, the propping piece is in a sphere shape, the propping piece is arranged in the receiving groove and the containing groove, and the propping piece is propped against the inner face of the receiving groove and the inner face of the containing groove in a surface contact mode.
The jump-off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the propping part is arranged on the deformation part in an integrated structure, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove in a surface contact mode.
The jump-off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the surface of the propping part is cylindrical, the propping part extends along the radial direction of the rod part, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove.
The trip mechanism is a one-way trip mechanism.
The trip mechanism is a two-way trip mechanism.
According to the torque wrench, through the structure, the torque data measured by the measuring device can be accurate.
Drawings
Fig. 1 is a perspective view showing a torque wrench according to a first embodiment of the present invention.
Fig. 2 is an exploded perspective view of a first embodiment of the torque wrench of the present invention.
Fig. 3 is a sectional view showing a structure of a first embodiment of the torque wrench of the present invention.
Fig. 4 is an exploded perspective view of a second embodiment of the torque wrench of the present invention.
Fig. 5 is a sectional view showing a construction of a second embodiment of the torque wrench of the present invention.
Fig. 6 is an exploded perspective view of a third embodiment of the torque wrench of the present invention.
Fig. 7 is a sectional view showing a construction of a third embodiment of the torque wrench of the present invention.
Fig. 8 is a cross-sectional view of a torque wrench according to another embodiment of the present invention.
Fig. 9 is an exploded perspective view of a fourth embodiment of the torque wrench of the present invention.
Fig. 10 is a sectional view showing a structure of a torque wrench according to a fourth embodiment of the present invention.
Fig. 11 is a cross-sectional view of a torque wrench according to another embodiment of the present invention.
Fig. 12 is an exploded perspective view of a fifth embodiment of the torque wrench of the present invention.
Fig. 13 is a sectional view showing a structure of a torque wrench according to a fifth embodiment of the present invention.
Fig. 14 is an exploded perspective view of a sixth embodiment of the torque wrench of the present invention.
Fig. 15 is a sectional view showing a construction of a sixth embodiment of the torque wrench of the present invention.
Fig. 16 is a cross-sectional view of a sixth embodiment of a torque wrench according to the present invention.
Fig. 17 is an exploded perspective view of a seventh embodiment of the torque wrench of the present invention.
Fig. 18 is a sectional view showing a structure of a seventh embodiment of the torque wrench of the present invention.
Fig. 19 is an exploded perspective view of an eighth embodiment of the torque wrench of the present invention.
Fig. 20 is a sectional view of a torque wrench according to an eighth embodiment of the present invention.
Fig. 21 is a cross-sectional view of a torque wrench according to another embodiment of the present invention.
Fig. 22 is an exploded perspective view of a ninth embodiment of the torque wrench of the present invention.
Fig. 23 is a sectional view showing a construction of a ninth embodiment of the torque wrench of the present invention.
Fig. 24 is a sectional view showing a structure of a tenth embodiment of the torque wrench of the present invention.
Fig. 25 is a sectional view showing a structure of an eleventh embodiment of the torque wrench of the present invention.
Fig. 26 is a perspective view showing a twelfth embodiment of a torque wrench according to the present invention.
Fig. 27 is an exploded perspective view of a twelfth embodiment of a torque wrench according to the present invention.
Fig. 28 is a sectional view showing a structure of a twelfth embodiment of the torque wrench of the present invention.
Fig. 29 is an exploded perspective view of a thirteenth embodiment of a torque wrench according to the present invention.
Fig. 30 is a sectional view showing a structure of a thirteenth embodiment of the torque wrench of the present invention.
Reference numerals illustrate: a 10 wrench; 20a body; 21 head; 22 pole parts; 23 trip mechanism; 231 receiving slots; 24 elastic members; 30 measuring means; 31 strain gauge stand; 311 first grooves; 312 a first side; 313 second side; 314 a second groove; 315 a third groove; 316 against the top; 317 receiving slots; 318 abutment; 32 strain gauges; 33 deformed portions; 331a third face; 34a first leg; a second pin 35; 20a body; 22a stem; 23a trip mechanism; 24a elastic member; 25a adjusting mechanism; 251a receiving groove; 311a first groove; 316a against the top; 32a strain gauge; 331a third face; 34a first leg; a 35a second leg; 20b body; 22b stem portion; 23b trip mechanism; 231b receiving slots; 24b elastic member; 31b strain gauge stand; 32b strain gauge; 33b deformation portion; 331b third face; 34b first leg; a second leg 35 b; 316b is against the top; 20c body; 22c a stem; 23c trip mechanism; 24c an elastic member; 25c an adjustment mechanism; 251c receiving groove; 31c strain gauge stand; 316c against the top; 32c strain gauge; 33c deformation; 331c third face; 34c first leg; a 35c second leg; a 20d body; 23d trip mechanism; 24d elastic members; 25d adjusting mechanism; 251d receiving groove; 31d strain gauge stand; 316d against the top; 32d strain gauge; 33d deformation portion; 331d third face; 34d first leg; a 35d second leg; 22e stem; 25e an adjustment mechanism; 251e receiving groove; 316e against the top; 32e strain gauge; 33e deformation portion; 20f a body; 22f a stem; 23f trip mechanism; 231f receiving slots; 24f elastic members; 32f strain gauge; 311f first groove; 316f against the top; 331f third face; 34f first leg; a 35f second leg; 22g of a rod part; 23g of a tripping mechanism; 231g of a receiving groove; 316g against the top; 32g strain gauge; 33g of deformation part; a 23h tripping mechanism; 23i trip mechanism; a 23p trip mechanism; 231p receiving slots; 316p is against the top; 32p strain gauge; 33p deformation; 20q body; 21q header; 22q stem; a 23q trip mechanism; 231q receiving slots; 24q elastic member; 31q strain gauge stand; 311q first groove; 312q first side; 313q second face; 316q is against the top; 32q strain gauge; a 33q deformation section; 331q third face; 34q first leg; a 35q second leg; a 20r body; 22r stem; 23r trip mechanism; 24r elastic members; 25r adjusting mechanism; 251r receiving groove; 311r first grooves; 316r against the top; 32r strain gauge; 33r deformation portion; 331r third face; 34r first leg; 35r second foot
Detailed Description
Referring to fig. 1 to 3, there are shown a perspective view, an exploded perspective view and a sectional view of a first embodiment of a torque wrench according to the present invention. The wrench 10 of the present invention includes a body 20 and a measuring device 30; wherein:
the body 20 includes a head 21 and a shaft 22, and one end of the shaft 22 is connected to the head 21.
The measuring device 30 includes a strain gauge seat 31 and a strain gauge 32, the strain gauge seat 31 is disposed in the stem 22, the strain gauge seat 31 is provided with a first groove 311 and a deformation portion 33 adjacent to the first groove 311, a first surface 312 and a second surface 313 are disposed at an inner periphery of the first groove 311, the first surface 312 faces the second surface 313, a third surface 331 is disposed at a side of the deformation portion 33 adjacent to the first groove 311, the third surface 331 is disposed between the first surface 312 and the second surface 313, and the strain gauge 32 is connected to the deformation portion 33.
The strain gauge seat 31 is provided with a second groove 314 and a third groove 315, the second groove 314 is disposed between the first surface 312 and the third surface 331, so that the first surface 312 is disconnected from the third surface 331, the second groove 314 is communicated with the first groove 311, the third groove 315 is disposed between the second surface 313 and the third surface 331, so that the second surface 313 is disconnected from the third surface 331, and the third groove 315 is communicated with the first groove 311.
The strain gauge seat 31 is provided with a supporting portion 316, and the supporting portion 316 has a raised structure and a convex arc surface.
The strain gauge seat 31 is provided with a first leg 34 and a second leg 35, the first groove 311 is disposed between the first leg 34 and the second leg 35, the first leg 34 and the second leg 35 are respectively connected to the deformation portion 33 in an integrally formed structure, the first surface 312 is disposed on a side of the first leg 34 adjacent to the first groove 311, and the second surface 313 is disposed on a side of the second leg 35 adjacent to the first groove 311.
The body 20 is provided with a trip mechanism 23 and an elastic member 24, the elastic member 24 is disposed on a side of the trip mechanism 23 opposite to the head 21, one end of the first leg 34 opposite to the deformation portion 33 and one end of the second leg 35 opposite to the deformation portion 33 respectively abut against the elastic member 24, the strain gauge 32 is connected to the third face 331 and faces the elastic member 24, and one side of the strain gauge seat 31 opposite to the elastic member 24 abuts against the trip mechanism 23.
The trip mechanism 23 is provided with a receiving groove 231, the abutting part 316 is disposed at one side of the deformation part 33 opposite to the strain gauge 32, the abutting part 316 comprises a receiving groove 317 and an abutting part 318, the receiving groove 317 is concavely disposed at the deformation part 33, the abutting part 318 is in a ball shape in the embodiment, the abutting part 318 is disposed in the receiving groove 231 and the receiving groove 317, and the abutting part 318 abuts against the inner surface of the receiving groove 231 and the inner surface of the receiving groove 317 in a surface contact manner.
The trip mechanism 23 is a one-way trip mechanism in this embodiment.
The wrench 10 can accurately measure the torque force data of the measuring device 30 through the above structure. The shape and structure of the strain gauge seat 31 can generate regular micro deformation when being stressed, so that the error of the measurement data of the strain gauge 32 is reduced, and the accuracy of the torsion data output by the measurement device 30 is improved.
Referring to fig. 4 and 5, there is shown an exploded perspective view and a sectional view of a torque wrench according to a second embodiment of the present invention. The second embodiment is substantially the same as the first embodiment, except that the body 20a is provided with a trip mechanism 23a, an elastic member 24a and an adjusting mechanism 25a, the elastic member 24a is abutted against the trip mechanism 23a, the adjusting mechanism 25a is disposed at a side of the elastic member 24a opposite to the trip mechanism 23a, the first leg 34a is abutted against the adjusting mechanism 25a, the second leg 35a is abutted against the elastic member 24a, and the strain gauge 32a is connected to the third face 331a and faces the inner periphery of the stem 22 a.
The adjusting mechanism 25a is provided with a receiving groove 251a, the supporting portion 316a is disposed on one side of the first leg 34a opposite to the first groove 311a, the surface of the supporting portion 316a is spherical in the present embodiment, the supporting portion 316a is disposed in the receiving groove 251a, and the supporting portion 316a abuts against the inner surface of the receiving groove 251a in a surface contact manner.
Referring to fig. 6 to 8, there is shown an exploded perspective view and a sectional view of a third embodiment of a torque wrench according to the present invention. The third embodiment is substantially the same as the first embodiment, with the main difference that the body 20b is provided with a trip mechanism 23b and an elastic member 24b, the side of the first leg 34b opposite to the trip mechanism 23b and the side of the second leg 35b opposite to the trip mechanism 23b respectively abut against the elastic member 24b, the third face 331b faces the inner periphery of the stem 22b, the strain gauge 32b faces the elastic member 24b, and the side of the strain gauge seat 31b opposite to the elastic member 24b abuts against the trip mechanism 23b.
The trip mechanism 23b is provided with a receiving groove 231b, the abutting portion 316b is disposed on one side of the deformation portion 33b opposite to the strain gauge 32b, the surface of the abutting portion 316b is spherical in shape in the present embodiment, the abutting portion 316b is disposed in the receiving groove 231b, and the abutting portion 316b abuts against the inner surface of the receiving groove 231b in a surface contact manner.
Referring to fig. 9 to 11, there is shown an exploded perspective view and a sectional view of a fourth embodiment of a torque wrench according to the present invention. The fourth embodiment is substantially the same as the first embodiment, with the main difference that the body 20c is provided with a trip mechanism 23c, an elastic member 24c and an adjusting mechanism 25c, the elastic member 24c abuts against the trip mechanism 23c, the adjusting mechanism 25c is disposed on a side of the elastic member 24c opposite to the trip mechanism 23c, the side of the first leg 34c opposite to the adjusting mechanism 25c and the side of the second leg 35c opposite to the adjusting mechanism 25c abut against the elastic member 24c respectively, the third face 331c faces the inner periphery of the stem 22c, the strain gauge 32c faces the elastic member 24c, and the side of the strain gauge seat 31c opposite to the elastic member 24c abuts against the adjusting mechanism 25c.
The adjusting mechanism 25c is provided with a receiving groove 251c, the abutting portion 316c is disposed on a side of the deformation portion 33c opposite to the strain gauge 32c, the surface of the abutting portion 316c is spherical in shape in the present embodiment, the abutting portion 316c is disposed in the receiving groove 251c, and the abutting portion 316c abuts against the inner surface of the receiving groove 251c in a surface contact manner.
Referring to fig. 12 and 13, there is shown an exploded perspective view and a sectional view of a fifth embodiment of a torque wrench according to the present invention. The fifth embodiment is substantially the same as the first embodiment, except that the body 20d is provided with a trip mechanism 23d, an elastic member 24d and an adjusting mechanism 25d, the elastic member 24d abuts against the trip mechanism 23d, the adjusting mechanism 25d is disposed on a side of the elastic member 24d opposite to the trip mechanism 23d, one end of the first leg 34d opposite to the deformation portion 33d and one end of the second leg 35d opposite to the deformation portion 33d abut against the elastic member 24d respectively, the strain gauge 32d is connected to the third face 331d and faces the elastic member 24d, and one side of the strain gauge seat 31d opposite to the elastic member 24d abuts against the adjusting mechanism 25d.
The adjusting mechanism 25d is provided with a receiving groove 251d, the abutting portion 316d is disposed on a side of the deformation portion 33d opposite to the strain gauge 32d, the surface of the abutting portion 316d is spherical in shape in the present embodiment, the abutting portion 316d is disposed in the receiving groove 251d, and the abutting portion 316d abuts against the inner surface of the receiving groove 251d in a surface contact manner.
Referring to fig. 14 to 16, there is shown an exploded perspective view and a sectional view of a sixth embodiment of a torque wrench according to the present invention. The sixth embodiment is substantially the same as the fifth embodiment, and the main difference is that the adjusting mechanism 25e is provided with a receiving groove 251e, the abutment portion 316e is disposed on a side of the deformation portion 33e opposite to the strain gauge 32e, the surface of the abutment portion 316e is cylindrical in this embodiment, the abutment portion 316e extends along the radial direction of the stem portion 22e, the abutment portion 316e is disposed in the receiving groove 251e, and the abutment portion 316e abuts against the inner surface of the receiving groove 251e in a surface contact manner.
Referring to fig. 17 and 18, there is shown an exploded perspective view and a sectional view of a seventh embodiment of a torque wrench according to the present invention. The seventh embodiment is substantially the same as the first embodiment, with the main difference that the body 20f is provided with a trip mechanism 23f and an elastic member 24f, the first leg 34f abuts against the trip mechanism 23f, the second leg 35f abuts against the elastic member 24f, and the strain gauge 32f is connected to the third face 331f and faces the inner periphery of the stem 22 f.
The trip mechanism 23f is provided with a receiving groove 231f, the abutting portion 316f is disposed on one side of the first leg 34f opposite to the first groove 311f, the surface of the abutting portion 316f is in a spherical shape in the present embodiment, the abutting portion 316f is disposed in the receiving groove 231f, and the abutting portion 316f abuts against the inner surface of the receiving groove 231f in a surface contact manner.
Referring to fig. 19 to 21, there is shown an exploded perspective view and a sectional view of an eighth embodiment of a torque wrench according to the present invention. The eighth embodiment is substantially the same as the first embodiment, and the main difference is that the trip mechanism 23g is provided with a receiving groove 231g, the abutment portion 316g is disposed on a side of the deformation portion 33g opposite to the strain gauge 32g, the surface of the abutment portion 316g is cylindrical in this embodiment, the abutment portion 316g extends along the radial direction of the stem 22g, the abutment portion 316g is disposed in the receiving groove 231g, and the abutment portion 316g abuts against the inner surface of the receiving groove 231g in a surface contact manner.
Referring to fig. 22 and 23, there is shown an exploded perspective view and a sectional view of a ninth embodiment of a torque wrench according to the present invention. The ninth embodiment is substantially the same as the first embodiment, and the main difference is that the trip mechanism 23h is another type of one-way trip mechanism in the present embodiment.
Referring to fig. 24, a cross-sectional view of a tenth embodiment of the torque wrench according to the present invention is shown. The tenth embodiment is substantially the same as the seventh embodiment, with the main difference that the trip mechanism 23i is a two-way trip mechanism in the present embodiment.
Referring to fig. 25, a cross-sectional view of an eleventh embodiment of the torque wrench of the present invention is shown. The eleventh embodiment is substantially the same as the first embodiment, and the main difference is that the trip mechanism 23p is provided with a receiving groove 231p, the abutting portion 316p is disposed on a side of the deformation portion 33p opposite to the strain gauge 32p, the abutting portion 316p is disposed on the deformation portion 33p in an integrally formed structure, the abutting portion 316p is disposed in the receiving groove 231p, and the abutting portion 316p abuts against an inner surface of the receiving groove 231p in a surface contact manner.
Referring to fig. 26 to 28, there is shown an exploded perspective view and a sectional view of a twelfth embodiment of a torque wrench according to the present invention. The twelfth embodiment is substantially the same as the first embodiment, and the main difference is that the strain gauge seat 31q is provided with a first leg 34q and a second leg 35q, the first groove 311q is disposed between the first leg 34q and the second leg 35q, the first leg 34q and the second leg 35q are respectively connected to the deformation portion 33q in an integrally formed structure, the first surface 312q is disposed on a side of the first leg 34q adjacent to the first groove 311q, the second surface 313q is disposed on a side of the second leg 35q adjacent to the first groove 311q, and the first surface 312q and the second surface 313q are respectively connected to opposite sides of the third surface 331 q.
The body 20q is provided with a trip mechanism 23q and an elastic member 24q, the elastic member 24q is disposed on one side of the trip mechanism 23q opposite to the head 21q, the first leg 34q abuts against the trip mechanism 23q, the second leg 35q abuts against the elastic member 24q, the strain gauge 32q is connected to one side of the deformation portion 33q opposite to the third face 331q and faces the inner periphery of the stem 22q, and the third face 331q is a concave arc surface.
The trip mechanism 23q is provided with a receiving groove 231q, the abutting portion 316q is disposed on one side of the first leg 34q opposite to the first groove 311q, the surface of the abutting portion 316q is in a spherical surface shape in the present embodiment, the abutting portion 316q is disposed in the receiving groove 231q, and the abutting portion 316q abuts against the inner surface of the receiving groove 231q in a surface contact manner.
Referring to fig. 29 and 30, there is shown an exploded perspective view and a sectional view of a thirteenth embodiment of a torque wrench according to the present invention. The thirteenth embodiment is substantially the same as the twelfth embodiment, and the main difference is that the body 20r is provided with a trip mechanism 23r, an elastic member 24r and an adjusting mechanism 25r, the elastic member 24r abuts against the trip mechanism 23r, the adjusting mechanism 25r is disposed at a side of the elastic member 24r opposite to the trip mechanism 23r, the first leg 34r abuts against the adjusting mechanism 25r, the second leg 35r abuts against the elastic member 24r, the strain gauge 32r is connected to a side of the deformation portion 33r opposite to the third face 331r and faces the inner periphery of the stem portion 22r, and the third face 331r has a concave arc surface.
The adjusting mechanism 25r is provided with a receiving groove 251r, the abutting portion 316r is disposed on one side of the first leg 34r opposite to the first groove 311r, the surface of the abutting portion 316r is spherical in shape in this embodiment, the abutting portion 316r is disposed in the receiving groove 251r, and the abutting portion 316r abuts against the inner surface of the receiving groove 251r in a surface contact manner.
The invention has the following advantages in view of the above description:
the torque wrench comprises a body and a measuring device, wherein the body comprises a head part and a rod part, one end of the rod part is connected with the head part, the measuring device comprises a strain gauge seat and a strain gauge, the strain gauge seat is arranged in the rod part, the strain gauge seat is provided with a first groove and a deformation part adjacent to the first groove, the strain gauge is connected with the deformation part, and the torque data measured by the measuring device can be accurate through the structure of the torque wrench.
Claims (24)
1. A torque wrench, comprising:
the body comprises a head part and a rod part, and one end of the rod part is connected with the head part;
the measuring device comprises a strain gauge seat and a strain gauge, wherein the strain gauge seat is arranged in the rod part, the strain gauge seat is provided with a first groove and a deformation part adjacent to the first groove, the strain gauge is connected with the deformation part, the strain gauge seat is also provided with a butt part, the butt part is in a bulge structure, the surface of the butt part is in a convex arc surface shape, the inner periphery of the first groove is provided with a first surface and a second surface, the first surface is opposite to the second surface, one side of the deformation part adjacent to the first groove is provided with a third surface, the third surface is arranged between the first surface and the second surface, the strain gauge seat is also provided with a first pin and a second pin, the first groove is arranged between the first pin and the second pin, the first pin and the second pin are respectively connected with the deformation part in an integrated structure, the first surface is arranged on one side of the first pin adjacent to the first groove, the second surface is arranged on one side of the second pin adjacent to the first groove, and the third surface is opposite to the second surface.
2. The torque wrench of claim 1, wherein: the body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the first foot is propped against the tripping mechanism, the second foot is propped against the elastic piece, the strain gauge is connected on one side of the deformation part opposite to the third surface and faces the inner periphery of the rod part, and the third surface is a concave cambered surface.
3. The torque wrench of claim 2, wherein: the trip mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the surface of the abutting part is in a spherical surface shape, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
4. The torque wrench of claim 1, wherein: the body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, the first foot is propped against the adjusting mechanism, the second foot is propped against the elastic piece, the strain gauge is connected on one side of the deformation part opposite to the third surface and faces the inner periphery of the rod part, and the third surface is a concave cambered surface.
5. The torque wrench of claim 4, wherein: the adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the first foot opposite to the first groove, the surface of the abutting part is spherical, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
6. The torque wrench of claim 1, wherein: the strain gauge seat is provided with a second groove and a third groove, the second groove is arranged between the first surface and the third surface, so that the first surface is not connected with the third surface, the second groove is communicated with the first groove, the third groove is arranged between the second surface and the third surface, so that the second surface is not connected with the third surface, and the third groove is communicated with the first groove.
7. The torque wrench of claim 6, wherein: the strain gauge seat is provided with a first pin and a second pin, the first groove is arranged between the first pin and the second pin, the first pin and the second pin are respectively connected with the deformation part in an integrated structure, the first surface is arranged at one side of the first pin adjacent to the first groove, and the second surface is arranged at one side of the second pin adjacent to the first groove.
8. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the first foot is propped against the tripping mechanism, the second foot is propped against the elastic piece, and the strain gauge is connected to the third surface and faces the inner periphery of the rod part.
9. The torque wrench of claim 8, wherein: the trip mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
10. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, the first foot is propped against the adjusting mechanism, the second foot is propped against the elastic piece, and the strain gauge is connected to the third surface and faces the inner periphery of the rod part.
11. The torque wrench of claim 10, wherein: the adjusting mechanism is provided with a receiving groove, the abutting part is arranged at one side of the first foot opposite to the first groove, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
12. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged on one side of the tripping mechanism opposite to the head, one side of the first foot opposite to the tripping mechanism and one side of the second foot opposite to the tripping mechanism respectively lean against the elastic piece, the third surface faces the inner periphery of the rod part, the strain gauge faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece leans against the tripping mechanism.
13. The torque wrench of claim 12, wherein: the jump-off mechanism is provided with a receiving groove, the propping part is arranged at one side of the deformation part opposite to the strain gauge, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove.
14. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged at one side of the tripping mechanism opposite to the head part, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged at one side of the elastic piece opposite to the tripping mechanism, one side of the first foot opposite to the adjusting mechanism and one side of the second foot opposite to the adjusting mechanism are propped against the elastic piece respectively, the third surface faces the inner periphery of the rod part, the strain gauge faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece is propped against the adjusting mechanism.
15. The torque wrench of claim 14, wherein: the adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
16. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism, an elastic piece and an adjusting mechanism, wherein the elastic piece is arranged on one side of the tripping mechanism opposite to the head, the elastic piece is propped against the tripping mechanism, the adjusting mechanism is arranged on one side of the elastic piece opposite to the tripping mechanism, one end of the first foot opposite to the deformation part and one end of the second foot opposite to the deformation part are propped against the elastic piece respectively, the strain gauge is connected to the third surface and faces the elastic piece, and one side of the strain gauge seat opposite to the elastic piece is propped against the adjusting mechanism.
17. The torque wrench of claim 16, wherein: the adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
18. The torque wrench of claim 16, wherein: the adjusting mechanism is provided with a receiving groove, the abutting part is arranged on one side of the deformation part opposite to the strain gauge, the surface of the abutting part is cylindrical, the abutting part extends along the radial direction of the rod part, the abutting part is arranged in the receiving groove, and the abutting part abuts against the inner surface of the receiving groove.
19. The torque wrench of claim 7, wherein: the body is provided with a tripping mechanism and an elastic piece, the elastic piece is arranged at one side of the tripping mechanism opposite to the head, one end of the first foot opposite to the deformation part and one end of the second foot opposite to the deformation part respectively lean against the elastic piece, the strain gauge is connected to the third surface and faces the elastic piece, and one side of the strain gauge opposite to the elastic piece leans against the tripping mechanism.
20. The torque wrench of claim 19, wherein: the jump off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the propping part comprises a containing groove and a propping piece, the containing groove is concavely arranged on the deformation part, the propping piece is in a sphere shape, the propping piece is arranged in the receiving groove and the containing groove, and the propping piece is propped against the inner face of the receiving groove and the inner face of the containing groove in a surface contact mode.
21. The torque wrench of claim 19, wherein: the jump-off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the propping part is arranged on the deformation part in an integrated structure, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove in a surface contact mode.
22. The torque wrench of claim 19, wherein: the jump-off mechanism is provided with a receiving groove, the propping part is arranged on one side of the deformation part opposite to the strain gauge, the surface of the propping part is cylindrical, the propping part extends along the radial direction of the rod part, the propping part is arranged in the receiving groove, and the propping part is propped against the inner surface of the receiving groove.
23. The torque wrench of any one of claims 2-5 and 8-22, wherein: the trip mechanism is a one-way trip mechanism.
24. The torque wrench of any one of claims 2-5 and 8-22, wherein: the trip mechanism is a two-way trip mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110109723 | 2021-03-18 | ||
| TW110109723 | 2021-03-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115106969A CN115106969A (en) | 2022-09-27 |
| CN115106969B true CN115106969B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210138441.2A Active CN115106969B (en) | 2021-03-18 | 2022-02-15 | Torque spanner |
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| Country | Link |
|---|---|
| CN (1) | CN115106969B (en) |
| TW (1) | TWI794012B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115106969A (en) | 2022-09-27 |
| TWI794012B (en) | 2023-02-21 |
| TW202237343A (en) | 2022-10-01 |
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