TWM498093U - Electronic torque wrench capable of positioning head angle - Google Patents

Description

Electronic torque wrench for positioning the swing angle

The present invention relates to a wrench, and more particularly to an electronic torque wrench capable of positioning a swing angle.

Referring to FIG. 1, a prior art torque tool includes a handle portion 11 for a user to grip, a trigger portion 12 for transmitting an external force from the handle portion 11 and rotating the workpiece, and a handle portion The measuring portion 13 in the portion 11 and a base 14 disposed at the bottom end of the pulling portion 12. The handle portion 11 has a hollow tubular shape and includes an open end 111 and a positioning pin 112 disposed at the open end 111. The triggering portion 12 includes a triggering head 121, a rotating member 123 provided with a concave ring groove 122, and a socket rod 124 received in the handle portion 11. The rotating member 123 is pivoted to the position of the positioning pin 112, so that the pulling portion 12 can be omnidirectionally wound. The measuring portion 13 is disposed at the end of the socket rod 124 and is used for measuring a torque value when the pulling portion 12 outputs a force to rotate the workpiece. The base 14 includes a display screen 141 electrically connected to the measuring portion 13 for displaying the torque value.

Although the triggering portion 12 has the function of omnidirectional winding to facilitate the observation of the display screen 141, since it cannot be fixed, a force may be consumed because the pulling portion 12 slides relative to the grip portion 11 when the force is applied. Cause The force is inconvenient; and because the triggering portion 12 is continuously rotated, the measuring portion 13 is restricted to be disposed only at the end of the pulling portion 12 to avoid the winding of the line, and thus the measuring position is away from the actual output of the pulling head 121. The accuracy of the torque value is low. In addition, the force receiving points for transmitting the force between the pulling portion 12 and the grip portion 11 are respectively the positioning pin 112 and the rotating member 123, and the contact area is small, and the stress concentration is easy, which is unfavorable. Passed and easily damaged.

Therefore, the object of the present invention is to provide an electronic torque wrench capable of fixing the swing angle and accurately measuring the torque value and effectively applying the angle of the swing head.

Therefore, the novel electronic torque wrench capable of positioning the swing angle includes a grip tube unit, an adjusting unit, a sensing unit, an operating unit, and a processing unit.

The grip tube unit extends along an axial direction and includes a plurality of pressing holes arranged around the axial interval.

The adjusting unit is disposed in the holding tube unit, and includes a tool head, a first limiting group, a second limiting group, and a sleeve disposed on the holding tube unit.

The tool head has a head portion, a measuring portion connecting the head portion, and a shaft portion extending along the axial direction and connected to the measuring portion and pivoted on the shaft sleeve, the first limit group and the The second limit group is respectively disposed at two ends of the shaft portion along the axial direction, and is disposed outside the sleeve. The first limit group is used for positioning an angle of rotation of the tool head relative to the sleeve. a limit group has one a flange disposed on the shaft portion, a sliding slot extending in the radial direction, a sliding button disposed on the sliding slot and locking against a pressing hole, and a sliding contact The groove and the elastic member of the pressing button.

The sensing unit is disposed on the measuring portion of the tool head for measuring a shape variable of the tool head.

The operating unit includes a display disposed on the grip unit and configured to display a torque value.

The processing unit is electrically connected to the sensing unit and the operating unit, respectively, for calculating the deformation variable into the torque value.

The utility model has the advantages that the swinging angle of the tool head is fixed by the first limit group, and the sensing unit is arranged adjacent to the force applying point to facilitate accurate measurement of the torque, and the external force is applied through the sleeve. The stress produced at the time, which in turn assists the steady application of force.

11‧‧‧Handle

111‧‧‧Open end

112‧‧‧Locating pins

12‧‧‧Turning Department

121‧‧‧ Pulling head

122‧‧‧ concave ring groove

123‧‧‧Rotating parts

124‧‧‧ Sockets

13‧‧‧Measurement Department

14‧‧‧Base

141‧‧‧ display screen

2‧‧‧Watch unit

21‧‧‧ tube body

22‧‧‧Shell cover

221‧‧‧ window

23‧‧‧Press hole

231‧‧‧ initial pressing hole

232‧‧‧Stop the pressing hole

233‧‧‧Reverse pressing hole

3‧‧‧Adjustment unit

31‧‧‧Tool head

311‧‧‧ head

312‧‧‧Measurement Department

313‧‧‧Axis

314‧‧‧Long slot

315‧‧‧ hole sets

32‧‧‧First Limit Group

321‧‧‧Flange

322‧‧‧Chute

323‧‧‧Press button

324‧‧‧Flexible parts

325‧‧‧ Groove

33‧‧‧second limit group

34‧‧‧Limited parts

341‧‧‧ large diameter outer perimeter

342‧‧‧Outer perimeter of the trail

343‧‧‧Limited surface

344‧‧‧ top surface

345‧‧‧ bottom

346‧‧‧Bump

347‧‧‧Line hole

348‧‧‧Sliding interval

35‧‧‧ Limit pin

36‧‧‧Fixed parts

37‧‧‧ bushings

38‧‧‧Leather cover

4‧‧‧Sensor unit

41‧‧‧Sense parts

42‧‧‧Wire

5‧‧‧Operating unit

51‧‧‧ display

52‧‧‧ Inputs

6‧‧‧Processing unit

61‧‧‧ Processor

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view showing a conventional torque tool; FIG. 2 is a perspective view showing the novel positionable swing head An embodiment of an angled electronic torque wrench, and a tool head of the embodiment is in an initial position; FIG. 3 is a partial exploded view illustrating an adjustment unit and a tube body of the embodiment; 2 is a cross-sectional view taken from the center line IV-IV, illustrating the bonding relationship between the tube body and the inside of the adjusting unit of the embodiment; Figure 5 is a cross-sectional view taken along line VV of Figure 4, illustrating a first set of the adjustment unit of the embodiment, wherein the tool head is at the initial position; Figure 6 is a cross-sectional view of Figure 4 A cross-sectional view taken by line VI-VI illustrates a second limit group of the adjusting unit of the embodiment, wherein the tool head is at the initial position; and FIG. 7 is a block diagram illustrating a sense of the embodiment. FIG. 8 is a perspective view showing a tool head of the embodiment in a forward position; FIG. 9 is a view similar to FIG. 5, illustrating the embodiment. The state of the first limit group when the tool head is in the forward position; FIG. 10 is a view similar to FIG. 6 , illustrating the second limit of the tool head of the embodiment in the forward position The state of the bit group; and Fig. 11 is a perspective view showing the tool head of the embodiment in a reverse position.

Referring to FIG. 2 and FIG. 3 , an embodiment of the electronic torque wrench capable of positioning a swing angle includes: a grip tube unit 2 , an adjustment unit 3 , a sensing unit 4 , an operation unit 5 , and a processing unit 6 (see Figure 7).

The grip tube unit 2 includes a tube body 21 extending in an axial direction L, a cover 22 disposed outside the tube body 21, and three pressing holes 23. The cover 22 has a window 221. The front portion of the tubular body 21 protrudes from the casing 22, and the pressing holes 23 are formed in the tubular body 21 at intervals around the axial direction L. The previous paragraph. For convenience of description, the pressing holes 23 are defined as an initial pressing hole 231 located in the middle, a forward pressing hole 232 and a reverse pressing hole 233. In this embodiment, the tubular body 21 is a metal tubular member, such as an iron pipe, which has high strength and is resistant to bending.

Referring to FIG. 3 and FIG. 4 , the adjusting unit 3 is received in the tube body 21 , and includes a tool head 31 , a first limiting group 32 , a second limiting group 33 , a sleeve 37 , and a dust jacket 38 . .

The tool head 31 has a head portion 311 for transmitting a torque to fasten the workpiece, a measuring portion 312 connecting the head portion 311, and a shaft portion 313 extending along the axial direction L and connecting the measuring portion 312. . The shaft portion 313 has a long groove 314 formed on the outer peripheral surface and extending parallel to the axial direction L, and two sleeve holes 315 extending inwardly from the end and parallel to the axial direction L.

Referring to FIG. 5 , the first limiting block 32 has a flange 321 disposed adjacent to the measuring portion 312 of the shaft portion 313 , and a sliding slot 322 extending radially from the flange 321 . The pressing button 323 of the sliding groove 322 is slid, and an elastic member 324 is respectively abutted against the sliding groove 322 and the pressing button 323. In this embodiment, the elastic member 324 is a compression spring. In the case of no external force, the pressing button 323 is abutted against the elastic member 324 to be locked against one of the pressing holes 23. The flange 321 has a recess 325 that opens parallel to the axial direction L.

Referring to FIG. 3, FIG. 4 and FIG. 6, the second limiting group 33 has a limiting member 34 disposed at the end of the shaft portion 313, and a limit of the tubular body 21 fixed to the holding tube unit 2. The pin 35 and a fixing member 36 for locking the limiting member 34 to the shaft portion 313. The limiting member 24 has a large diameter a circumferential surface 341, a small-diameter outer circumferential surface 342 partially recessed from the large-diameter outer circumferential surface 341, and two limiting surfaces 343 connecting the large-diameter outer circumferential surface 341 and the small-diameter outer circumferential surface 342, respectively, along the axial direction L A top surface 344 adjacent to the shaft portion 313 and a bottom surface 345 and two are respectively extended outwardly from the top surface 344 and symmetrically disposed in the axial direction L and respectively inserted into the protrusions 346 of the sleeve holes 315, and A line hole 347 is formed through the top surface 344 along the axial direction L to the bottom surface 345. The limiting surface 343 and the small-diameter outer peripheral surface 342 define a sliding section 348 for receiving the limiting pin 35. It can be understood that the angle between the limiting surfaces 343 around the small-diameter outer peripheral surface 342 The larger the larger the sliding section 348 in which the limit pin 35 is movable, the larger. In this embodiment, the limit pin 35 is a headless screw, and the fixing member 36 is a flat head screw. The center of the limiting member 34 is screwed and fixed to the end of the shaft portion 313 by the fixing member 36, and is fixed by the protrusions 346 to prevent the limiting member 34 from moving relative to the shaft portion 313.

In the embodiment, the flange 321 is integrally formed with the measuring portion 312 and the shaft portion 313 , and the limiting member 34 is locked to the shaft portion 313 . It can be inferred that the flange 321 can also be separately fabricated and then processed, or the limiting member 34 can be directly formed together with the tool head 31 or otherwise fixed to the tool head. 31. The processing and fixing method of the flange 321 and the limiting member 34 are not limited by one of the manners disclosed in the embodiment, and both can maintain the same function.

Referring to FIG. 4 to FIG. 6 , the sleeve 37 is screwed to the tubular body 21 of the grip tube unit 2 , and the shaft portion 313 is sleeved and respectively clamped to the first limit group 32 . The flange 321 and the second limit group 33 The limiting member 34 is between. The shaft portion 313 of the tool head 31 has a rotational fit tolerance with the sleeve 37, and the gap between the flange 321 of the first limit group 32 and the tube body 21 is greater than the rotation fit tolerance. The gap between the limiting member 34 and the tubular body 21 of the second limiting group 33 is greater than the rotational fit tolerance. It is worth mentioning that the sleeve 37 is separately machined to obtain better precision so as to have a better fit with the shaft portion 313. Because the tool head 31 can rotate relative to the sleeve 37 about the axial direction L, the first limit group 32 and the second limit group 33 are used to limit and position the tool head 31, so that the tool head 31 is used. It is only movable relative to the sleeve 37 between an initial position, a forward position and a reverse position.

The further description is as follows: as shown in FIG. 4 , the flange 321 of the first limiting group 32 and the limiting member 34 of the second limiting group 33 are used to limit the shaft portion 313 to the sleeve 37 . The tool head 31 is prevented from sliding off the sleeve 37 along the axial direction L. As shown in FIG. 5, the pressing button 323 of the first limiting group 32 is locked to one of the pressing holes 23 to position the tool. The head 31 is at one of the positions; as shown in FIG. 6, the limiting member 34 of the second limiting group 33 cooperates with the limiting pin 35 to limit the angle at which the tool head 31 swings relative to the sleeve 37. And the angle does not exceed 360 degrees, and the tool head 31 is prevented from continuously rotating around the sleeve 37.

It should be noted that the sliding section 348 in which the limiting pin 35 is movable is disposed corresponding to the movable range of the pressing button 323, and the sliding section 348 does not affect the pressing of the pressing button 323 by the pressing button 323. It is conceivable that the number of the pressing holes 23 may also be more than three, correspondingly increasing the position at which the tool head 31 can be switched. It can be noted that the pressing button 323 is pressed down. The tool head 31 is rotatable relative to the sleeve 37 about the axial direction L, and the angle is not limited. If the force is too large, the tool head 31 is rotated excessively around the sleeve 37, and the sensing is performed. The unit 4 (see Fig. 3) is wound together, and there is a concern that the line is short-circuited or broken, so that the rotation angle must be limited by the second limit group 33.

It can be understood that the configuration of the first limit group 32 and the second limit group 33 can be interchanged, and the change of the exchange function by the simple positional interchange should belong to the protection of the present invention.

Referring to FIG. 2 , FIG. 3 and FIG. 7 , the sensing unit 4 includes a sensing component 41 disposed on the measuring portion 312 of the tool head 31 , and a set of electrically connected to the sensing component 41 and the processing unit respectively 6 of the wire 42. The sensing member 41 is disposed at the head 311 of the tool head 31 adjacent to the actual output torque to effectively sense the deformation generated by the measuring portion 312 and output a signal. In this embodiment, the sensor 41 The sensing member 41 is a strain gauge. The groove 325 of the flange 321 and the long groove 314 of the shaft portion 313 communicate with the space in the wire hole 347 of the limiting member 34 for the wire 42 to pass through.

The operating unit 5 is fixed to the cover 22 of the grip unit 2 and exposed to the window 221 and includes a display 51 and an input 52. The input 52 provides the user with a predetermined torque value. In the present embodiment, the display 51 is a digital display screen.

The processing unit 6 includes a processor 61 that electrically connects the sensing unit 4 and the operating unit 5, respectively. The processor 61 receives the signal from the sensing elements 41, and after calculating the signal, displays a torque value on the display 51. On the other hand, the processor 61 receives the pre-from the input unit 52. The torque value is determined as a torque upper limit value, and a reminder is displayed on the display 51 when the torque value reaches the torque upper limit value. Among them, the torsion strength measurement method and operation skill of the torsion wrench are well-known techniques in the field, and therefore will not be described here.

Referring to FIG. 2, FIG. 5 and FIG. 6, in the normal state, the pressing button 323 is locked to the initial pressing hole 231 located in the middle, and the tool head 31 is fixed to the initial position. To match different force application positions, the angle of the oscillating head of the tool head 31 can be adjusted. Referring to Figures 8-10, the tool head 31 is in the forward position. When the tool head 31 is to be pulled, the pressing button 323 is pressed down to be radially pushed inwardly against the elastic member 324 by an external force, and the pressing button 323 is released from the initial pressing hole 231. The tool head 31 is rotated about the axial direction L with respect to the sleeve 37, and the limit pin 35 abuts against one of the limiting surfaces 343, and the pressing button 323 is engaged with the pressing pressing hole. 232, the tool head 31 can be fixed in the forward position, and the display 51 can be easily viewed. Similarly, referring to Fig. 11, reversing the tool head 31 can cause the tool head 31 to be rotated to the reverse position.

Comparing FIG. 2, FIG. 8 and FIG. 10, it can be found that regardless of the swing angle of the tool head 31, the display 51 is always maintained at the user's line of sight, so that the user can view the current torque value at any time.

Referring to FIG. 2, in use, the user first adjusts the tool head 31 to an appropriate swing angle, and after the tool head 31 is sleeved on a workpiece, the grip tube unit 2 is gripped and the force is pulled. The workpiece is pressed, and the display 51 displays the current torque value for the user to view. The user can also input the preset torque value by the input device 52 as a reminder for the force application.

Through the above description, the advantages and functions of the novel electronic torque wrench capable of positioning the swing angle are listed below:

1. The present invention is provided with the pressing holes 23 for the user to fix and fix the pressing button 323 according to the state of use, so as to locate the swinging angle of the tool head 31, and avoid the relative sliding of the tool head 31, and the operation can be stabilized. Output, and improve the effect of exertion, and avoid injury caused by unsatisfactory force.

2. The contact points of the transmission force of the present invention are the sleeve 37 and the shaft portion 313 of the tool head 31 respectively. The contact area between the sleeves is large, the stress can be dispersed, the stability is applied, and the damage is less likely to be damaged.

The design of the limiting member 34 of the second limiting group 33 is matched with the limiting pin 35 to limit the angle of the tool head 31 from swinging relative to the sleeve 37 by no more than 360 degrees. The tool head 31 continuously rotates the sleeve 37, so that the wire 42 is not damaged by excessive winding, and the service life is prolonged, and the sensing member 41 is disposed adjacent to the force point, and the energy is more accurately measured. The shape variable increases the accuracy of measuring the torque value.

4. The display 51 of the present invention is not affected by the oscillating angle of the tool head 31, and remains in the visible position of the user for the convenience of the user.

In summary, the novel can not only adjust the angle of the positioning swing, but also assist the user to stabilize the output and improve the measurement accuracy, so the purpose of the novel can be achieved.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and repair according to the scope of the patent application and the contents of the patent specification. Decorations are still covered by this new patent.

2‧‧‧Watch unit

21‧‧‧ tube body

23‧‧‧Press hole

231‧‧‧ initial pressing hole

232‧‧‧Stop the pressing hole

233‧‧‧Reverse pressing hole

3‧‧‧Adjustment unit

31‧‧‧Tool head

311‧‧‧ head

312‧‧‧Measurement Department

313‧‧‧Axis

314‧‧‧Long slot

315‧‧‧ hole sets

32‧‧‧First Limit Group

321‧‧‧Flange

322‧‧‧Chute

323‧‧‧Press button

324‧‧‧Flexible parts

325‧‧‧ Groove

33‧‧‧second limit group

34‧‧‧Limited parts

341‧‧‧ large diameter outer perimeter

342‧‧‧Outer perimeter of the trail

343‧‧‧Limited surface

344‧‧‧ top surface

345‧‧‧ bottom

346‧‧‧Bump

347‧‧‧Line hole

348‧‧‧Sliding interval

35‧‧‧ Limit pin

36‧‧‧Fixed parts

37‧‧‧ bushings

38‧‧‧Leather cover

4‧‧‧Sensor unit

41‧‧‧Sense parts

42‧‧‧Wire

Claims (9)

An electronic torque wrench capable of positioning a swing angle includes: a grip tube unit extending along an axial direction and including a plurality of pressing holes arranged around the axial direction; and an adjusting unit disposed in the grip tube unit And including a tool head, a first limit group, a second limit group, and a sleeve disposed on the grip tube unit, the tool head having a head and a measuring portion connecting the head, And a shaft portion extending along the axial direction and connected to the measuring portion and pivoted on the shaft portion of the sleeve, the first limiting group and the second limiting group are respectively disposed at two ends of the shaft portion along the axial direction And being disposed outside the sleeve, the first limiting group is configured to position an angle of rotation of the tool head relative to the sleeve, the first limiting group has a flange disposed on the shaft portion, and a diameter along the shaft a sliding button opened on the flange, a sliding button disposed on the sliding groove and locking against one of the pressing holes, and an elastic member respectively abutting against the sliding groove and the pressing button; a measuring unit disposed on the tool head for measuring a shape variable of the tool head; an operating unit including a setting The grip tube unit and a display for displaying torque values; and a processing unit, electrically connected to the sensing unit and the operation unit for calculating the deformation to the torque value. The electronic torque wrench capable of positioning a swing angle according to claim 1, wherein the second limit group is used to limit an angle of rotation of the tool head relative to the sleeve. The electronic torque wrench capable of positioning a swing angle according to claim 2, wherein the second limit set has a limit member disposed on the shaft portion, and a limit pin fixed to the grip tube unit The limiting member has a large outer peripheral surface, a small outer peripheral surface partially recessed from the outer peripheral surface of the large diameter, and two limiting surfaces respectively connecting the outer peripheral surface of the large diameter and the outer peripheral surface of the small diameter, and the like The limiting surface and the outer peripheral surface of the small diameter define a sliding section for receiving the limiting pin. The electronic torque wrench capable of positioning a swing angle according to claim 3, wherein the flange is located at the shaft portion of the tool head adjacent to the measuring portion, and the limiting member is located at the end of the shaft portion. An electronic torque wrench capable of positioning a swing angle according to claim 4, wherein the shaft portion has at least one sleeve hole extending from the end and parallel to the axial direction, the stopper member further having a phase along the axial direction a top surface and a bottom surface adjacent to the shaft portion, and at least one protrusion extending outward from the top surface and nesting into the sleeve hole. The electronic torque wrench capable of positioning a swing angle according to claim 4, wherein the sensing unit comprises a sensing component, and a set of wires electrically connecting the sensing component and the processing unit, respectively, the flange has a groove having a long groove extending parallel to the axial direction, the limiting member further having a wire hole, the groove and the long groove communicating with a space in the wire hole for the wire to pass through. The electronic torque wrench capable of positioning the swing angle according to claim 3, wherein the grip tube unit further comprises a tube body extending along the axial direction and fixed to the sleeve, and one set is disposed outside the tube body. Shell, the pressing holes around the An axial spacing is formed in the tubular body. The electronic torque wrench capable of positioning a swing angle according to claim 7, wherein the cover has a window, the operation unit is fixed to the cover and exposed to the window, and further includes an input device. The electronic torque wrench capable of positioning the swing angle according to claim 7, wherein the shaft portion of the tool head and the sleeve have a rotational fit tolerance, the flange of the first limit group and the grip tube The gap between the tube bodies of the unit is greater than the rotation fit tolerance, and the gap between the limiting member of the second limit group and the tube body of the grip tube unit is greater than the rotational fit tolerance.