TWI755273B - Torque screwdriver structure - Google Patents

Abstract

The present invention relates to a torque screwdriver structure, which comprises: a first body set with a first body, a motor, a planetary gear set, a first driving member and a second driving member; a strain gauge seat system A first accommodating groove, an accommodating groove and a second fitting part are provided; a second body set is provided with a second body, a display and a contacting piece; the second body set is provided with a second accommodating groove , a first opening, a second opening and a first through slot; the display is assembled at the first through slot; the abutting member is assembled in the second body; a strain gauge is used for Detecting the torsional deformation of the strain gauge seat; two fixing parts make the strain gauge seat and the second body assembled; a third body assembly is provided with a third body, a connector, a power supply element and two switches .

Description

Torque screwdriver structure

The present invention relates to a torsion screwdriver structure, especially a torsion screwdriver structure in which the first body set is accommodated in the first accommodating groove, and both the first body set and the strain gauge seat are hidden in the first body set. The section inside the two bodies, that is, the section at the fixing piece is the first body, the strain gauge seat and the second body, and there is a better assembly structure between the three, and this assembly structure is the same stack structure.

According to our previous knowledge, the conventional torque wrench structure, such as US patent number US10625405B2, namely Taiwan patent case number: 106213628, certificate number: M556196, patent name: electric ratchet torque wrench, the patent case structure is: an electric tool , including: a motor 18 having a motor drive shaft 20; a drive assembly 22 coupled to the motor drive shaft 20 and driven by the motor 18; an output assembly 24 coupled to the drive assembly 22 and having an output The member 102 receives torsion force from the drive assembly 22, so that the output member 105 can rotate about an axis A; and a conversion assembly 118 is provided between the motor 18 and the output assembly 24, which can be used as the motor 18 When inactive, the amount of torque applied via the output member 102 is measured in response to the power tool being manually rotated about the axis A.

But the lack of this conventional electric ratchet torque wrench is:

1. The output assembly 24 is assembled with the conversion assembly 118, the conversion assembly 118 is assembled with the gear housing 36 of the drive assembly 22, and the gear housing 36 is assembled with the main housing body 12 Phase-fixed design, that is, four assemblies are assembled in sequence, and the assembly structure is a sequential structure, which is relatively unfavorable.

2. As shown in FIG. 1 and FIG. 5 , the strain gauge 142 is directly located outside the conversion assembly 118, that is, the strain gauge 142 is exposed to the outside, and the strain gauge 142 is susceptible to water erosion. damage.

3. The head piece 14 , the conversion assembly 115 , the gear housing 36 and the main casing 12 are attached to the external appearance of Citation 1.

In view of the above-mentioned shortcomings of the conventional structure, the inventor of the present invention has finally developed a product with a torque screwdriver structure that can solve the drawbacks of the conventional structure with years of experience in manufacturing, production and design in related industries.

In the conventional electric ratchet torque wrench, the output assembly is assembled with the conversion assembly, the conversion assembly is assembled with the gear housing of the driving assembly, and the gear housing is assembled with the main housing The body phase is fixed, that is, four assemblies are assembled in sequence, and the assembly structure is not good if it is set in a sequential structure. In the torque screwdriver structure of the present invention, the first body set is accommodated in the first accommodating groove, and the first body set and the strain gauge seat are both hidden in the second body, that is, at the fixing member The cross-section is the first body, the strain gauge seat and the second body, and there is a better assembly structure among the three, and the assembly structure is an overlapping structure among the three.

The present invention relates to a torque screwdriver structure, which comprises: a first body set with a first body, a motor, a planetary gear set, a first driving member and a second driving member; a strain gauge seat system There is a first accommodating groove, a accommodating groove and a a second fitting part; a second body set is provided with a second body, a display and an abutting member; the second body set is provided with a second accommodating groove, a first opening, a second opening and a first a through slot; the display is assembled at the first through slot; the abutting member is assembled in the second body; a strain gauge is used to detect the torsional deformation of the strain gauge seat; two fixed The strain gauge seat is assembled with the second body; a third body assembly is provided with a third body, a connecting piece, a power supply element and two switches.

The first body set is accommodated in the first accommodating groove, the driving part is protruded from one end of the strain gauge seat, the motor is protruded from the other end of the strain gauge seat, the first body set and the strain gauge The gauge seat is hidden in the second body, only the driving part protrudes out of the second body, that is, the section at the fixing part is the first body, the strain gauge seat and the second body. The body has a better assembly structure among the three, and this assembly structure is a superimposed structure among the three. The force application point is closer to the driving part than the resistance point. When holding the second body, the force application point is farther from the second body than the resistance point. When force is applied, the force application point is farther away from the grip than the resistance point. Where the second body is held, the transmission force system will reversely pass through the strain gauge seat to have a better force application state.

In order to make the committee members and those skilled in the art fully understand the effect of the present invention, the structure and composition of the present invention are explained in the following in conjunction with the drawings and drawing numbers, but the following descriptions are only used to explain the implementation of the present invention For example, it is not intended to limit the present invention in any form, and any modification and change made under the spirit of the present invention should still belong to the protection scope of the present invention.

10: The first body group

11: The first body

111: The first set of assembly

12: Motor

121: Abutment

13: Planetary gear set

14: The first drive

141: The first group set up department

15: Second drive

151: Drive Department

152: Second group set up

20: Strain gauge holder

21: The first tank

22: accommodating slot

23: The second set of joints

24: The first fixed part

30: Second Ontology Group

31: The second body

311: Second container

312: The first opening

313: Second fixed part

314: Second Opening

315: The first slot

316: The first joint

32: Display

33: Abutment

331: Second Joint

34: Bonding pieces

40: Strain gauge

50: Fixtures

60: The third ontology group

61: The third body

611: The third tank

612: Second slot

613: The third opening

614: Fourth Opening

615: The third slot

62: Connector

621: Fourth container

63: Power supply components

64: Grip

65: The first outer cover

66: switch

67: Second outer cover

68: The first axis

681: Second axis

682: Third axis

683: Angle

Fig. 1 is a perspective exploded view of the structure of the torque screwdriver of the present invention.

Fig. 2 is an exploded perspective view of the first body group of the torque screwdriver structure of the present invention.

Figure 3 is an exploded perspective view of the second body group of the torque screwdriver structure of the present invention.

Figure 4 is an exploded perspective view of the third body group of the torque screwdriver structure of the present invention.

Figure 5 is a top view of the third body group of the torque screwdriver structure of the present invention.

FIG. 6 is a three-dimensional combined view of some components of the torque screwdriver structure of the present invention.

Figure 7 is a perspective view of the structure of the torque screwdriver of the present invention.

Figure 8 is a top view of the structure of the torque screwdriver of the present invention.

FIG. 9 is a cross-sectional view of the present invention at A-A of FIG. 8 .

FIG. 10 is an exploded perspective view of some components of the second embodiment of the present invention.

FIG. 11 is a perspective view of the second embodiment of the present invention.

First, please refer to FIGS. 1 to 9 , FIG. 1 is an exploded perspective view of the structure of the torque screwdriver of the present invention, FIG. 2 is an exploded perspective view of the first body group 10 of the structure of the torque screwdriver of the present invention, and FIG. 3 is the structure of the torque screwdriver of the present invention. Figure 4 is an exploded perspective view of the third body set 60 of the torque driver structure of the present invention, Figure 5 is a top view of the third body set 60 of the torque driver structure of the present invention, and Figure 6 is the present invention Figure 7 is a three-dimensional view of the torque screwdriver structure of the present invention, Figure 8 is a top view of the torque screwdriver structure of the present invention, and Figure 9 is a cross-sectional view of the AA in Figure 8 of the present invention. It can be clearly shown that the present invention relates to a torque driver structure, which includes:

A first body set 10, the first body set 10 is in the shape of a round rod, please supplement as shown in FIG. 2, the first body set 10 is provided with a first body 11, a motor 12, and a planetary gear set 13. A first driving member 14 and a second driving member 15;

The first body 11 is in the shape of a hollow round rod. The first body 11 is provided with at least one first fitting portion 111 . The first fitting portion 111 is in the shape of an elongated convex block. The joint parts 111 are arranged on the outer peripheral surface of the first body 11 , the first joint parts 111 are plural, and the plurality of first joint parts 111 are arranged in a ring around the axis of the first main body 11 . shape, or the first fitting portion 111 is two, the two first fitting portions 111 are relatively positive, and the first body 11 is provided with annularly arranged teeth;

One end of the motor 12 is assembled with the first body 11 , the motor 12 protrudes from a rotating shaft, and the other end of the motor 12 is provided with an abutting portion 121 , and the abutting portion 121 is in the shape of two rectangular parallelepiped bumps ;

The planetary gear set 13 is accommodated in the first body 11 , one end of the planetary gear set 13 is assembled with the motor 12 , and the motor 12 drives the planetary gear set 13 to rotate in the first body 11 ;

The first driving member 14 is in the shape of a ring. One end of the first driving member 14 is assembled with the planetary gear set 13 . The planetary gear set 13 drives the first driving member 14 to rotate. The planetary gear set 13 is disposed between the motor 12 and the first driving member 14 , and a first assembly portion 141 is disposed in the first driving member 14 , and the first assembly portion 141 transversely penetrates the first driving member 14 . , the first set portion 141 is in the shape of a hexagonal slot, or the first set portion 141 is in the shape of a quadrangular slot or each non-circular slot;

The second driving member 15 is in the shape of a round rod, one end of the second driving member 15 is provided with a driving portion 151 , the driving portion 151 is in the shape of a hexagonal groove or a square head, and the other end of the second driving member 15 is A second assembly part 152 is provided, the second assembly part 152 is assembled with the first assembly part 141 , the second assembly part 152 is separated from the driving part 151 , and the second assembly part 152 is The part 152 is accommodated in the first set part 141, and the shape of the second set part 152 is matched with the shape of the first set part 141;

A strain gauge seat 20 is assembled with the first body group 10 , the strain gauge seat 20 is sleeved on the first body group 10 , and the strain gauge seat 20 is in the shape of a cylinder The strain gauge seat 20 is provided with a first accommodating groove 21, the first accommodating groove 21 penetrates the strain gage seat 20, the first body group 10 is accommodated in the first accommodating groove 21, and the drive The portion 151 is protruded from one end of the strain gauge seat 20, the motor 12 is protruded from the other end of the strain gauge seat 20, the first accommodating groove 21 is in the shape of a circular groove, and the strain gauge seat 20 is provided with an accommodating Slot 22, the accommodating slot 22 is in communication with the first accommodating slot 21, and the rear end of the strain gauge seat 20 is provided with at least one second sleeve part 23, the second sleeve part 23 is sleeved on the At the first fitting portion 111 , the strain gauge base 20 is restricted by the first fitting portion 111 and cannot rotate relative to the first body set 10 , and the number of the second fitting portion 23 is the same as the number of the first fitting portion 23 . The number of the fitting parts 111 is matched, one end of the second fitting part 23 is open, the second fitting part 23 is a rectangular groove, and the second fitting part 23 is connected with the first fitting part 23 The fitting portion 111 is in a tight fit shape. One end of the strain gauge base 20 is provided with two first fixing portions 24 , and the accommodating groove 22 is formed between the first fixing portion 24 and the second fitting portion 23 . The first fixing portion 24 is in the shape of a circular hole or grooves, the two first fixing portions 24 pass through the strain gauge seat 20 , and the two first fixing portions 24 are symmetrical relative to the strain gauge seat 20 . ;

The second fitting portion 23 and the accommodating groove 22 are spaced 90 degrees apart. The fixed portion 24 and the accommodating groove 22 are located on the same side of the strain gauge base 20 , and the distance between the second fitting portion 23 and the accommodating groove 22 is close to or equal to the first fixing portion 24 and the accommodating groove 22 . the distance between the accommodating grooves 22;

A second body set 30 , as shown in FIG. 3 , the first body set 10 and the strain gauge seat 20 are accommodated in the second body set 30 , and the driving portion 151 is protruded from the second body set 30 . Outside the main body 31 , the second main body group 30 is provided with a second main body 31 , a display 32 , an abutting member 33 and a coupling member 34 ;

The second body 31 is in the shape of a round rod, the second body 31 is provided with a second accommodating groove 311 , the second accommodating groove 311 transversely penetrates the second body 31 , and the second accommodating groove 311 is hollow The second body 30 has a first opening 312 at one end, the strain gauge seat 20 is arranged in the second accommodating slot 311 , and the strain gauge seat 20 is arranged near the first opening 312 . The second body 31 is provided with two second fixing portions 313 , the second fixing portions 313 are arranged near the first opening 312 , and each second fixing portion 313 is opposite to each first fixing portion 24 . , the second fixing portion 313 is in the shape of a round hole, the second fixing portion 313 is in the shape of an internal thread, the other end of the second body 31 is provided with a second opening 314, the first opening 312 and the second opening 314 are respectively disposed at both ends of the second accommodating groove 311, the second body 31 is provided with a first through groove 315, and the first through groove 315 is communicated with the second accommodating groove 311. The through slot 315 is in the shape of a rectangular slot, the second body 31 is provided with a first joint portion 316, the first joint portion 316 is in the shape of a circular hole, and the first joint portion 316 is in the shape of an internal thread;

The display 32 is assembled at the first slot 315, the display 32 and the motor 12 are electrically connected, and the display 32 can be provided with a plurality of buttons for setting and each display screen;

The abutting member 33 is assembled in the second body 31 , the abutting member 33 can restrict the motor 12 from shifting and rotating in the second accommodating groove 311 , and the abutting member 33 is in the shape of a cuboid , the abutting member 33 abuts against the abutting portion 121 , the abutting member 33 is provided with a second joint portion 331 , the second joint portion 331 is opposite to the first joint portion 316 , the first joint portion 316 is opposite. The two engaging portions 331 penetrate the abutting member 33 in a straight direction, the second engaging portion 331 is in the shape of a circular perforation groove, and the second engaging portion 331 is in the shape of an internal thread;

The coupling member 34 is in the shape of an external thread, and the coupling member 34 passes through the first coupling portion 316 and is screwed to the second coupling portion 331 , so that the abutting member 33 is fixed on the second body within 31;

A strain gauge 40, the strain gauge 40 is a detectable side torsional deformation, the strain gauge 40 is used for detecting the torsional deformation of the strain gauge base 20, the strain gauge 40 is electrically connected with the display 32 , the strain gauge 40 is accommodated at the accommodating slot 22 , the strain gauge 40 can sense the deformation of the strain gauge seat 20 and transmit it to the display 32 , so that the display 32 displays the torque during rotation value, or when the preset torque value is reached, the display 32 displays the torque value and emits a prompt sound;

Two fixing pieces 50 , the fixing pieces 50 pass through the first fixing portion 24 and the second fixing portion 313 , so that the strain gauge seat 20 is assembled with the second body 31 , and the strain gauge seat 20 is Limited to the two second fixing parts 313 and the two fixing parts 50, they cannot rotate relative to the second body 31, and the strain gauge base 20 cannot be disengaged from the second receiving groove 311, and the fixing part 50 is In the shape of a cylinder or a screwed piece;

The first fixing portion 24 is closest to the first opening 312 , the second fitting portion 23 is farthest from the first opening 312 , and the accommodating groove 22 is between the first fixing portion 24 and the second sleeve combine The strain gauge seat 20 is assembled on the second body 31 limited by the fixing member 50 between the parts 23 , the second sleeve part 23 is sleeved on the first sleeve part 111 , and the first sleeve part 23 is assembled on the first sleeve part 111 A main body set 10 is limited by the strain gauge seat 20 and the abutting member 33 and cannot be displaced in the second body 31 and cannot come out of the second body set 30;

The first fixing portion 24 is closest to the first opening 312 , the first body set 10 and the strain gauge seat 20 are both hidden in the second body 31 , and only the driving portion 151 protrudes from the second body 31 . Outside the main body 31;

When the driving part 151 fits the workpiece and rotates the second body 31 , the place where the strain gauge seat 20 and the second body 31 are assembled is the force application point, that is, the position of the fixing member 50 is the force application point , the second fitting portion 23 and the first fitting portion 111 are the resistance points, and the force application point is closer to the driving portion 151 than the resistance point, that is, when the second body 31 is held, the force application point The resistance point is farther from the place where the second body 31 is held, the strain gauge 40 is located between the force application point and the resistance point, the strain gauge 40 is used to measure the torsion state of the strain gauge seat 20, the force application point and the The resistance points are all hidden in the second body 31;

A third body group 60, as shown in FIG. 4, the third body group 60 is slightly T-shaped, the third body group 60 is assembled with the second body group 30, the third body group The group 60 is provided with a third body 61 , a connector 62 , a power supply element 63 , a handle 64 , a first cover 65 , two switches 66 and a second cover 67 ;

The third body 61 is in the shape of a round rod, and a third accommodating groove 611 is formed in the third body 61 . The third accommodating groove 611 penetrates the third body 61 transversely, and the third accommodating groove 611 is The third body 61 has a second through-slot 612, the second through-slot 612 and the third accommodating slot 611 communicate with each other, and the second through-slot 612 is in the shape of a circular through-hole or various slots shape, the third container 611 is a The end is provided with a third opening 613, the third opening 613 is in the shape of an internal thread, the other end of the third container 611 is provided with a fourth opening 614, the fourth opening 614 is in the shape of an internal thread, and the third opening 614 is in the shape of an internal thread. The main body 61 is provided with two third through-slots 615, and there is a slight distance between the two third through-slots 615. The third through-slot 615 is in the shape of a circular through-hole or each slot. The axis is perpendicular to the axis of the third body 61;

The cross-section of the connecting piece 62 is in the shape of a circle or various shapes. One end of the connecting piece 62 is connected to the second through groove 612 , and the other end of the connecting piece 62 is connected to the second opening 314 . 62 is connected to the second body 31 and the third body 61, the connecting piece 62 is provided with a fourth accommodating groove 621, the fourth accommodating groove 621 penetrates the connecting piece 62, and the fourth accommodating groove 621 is in the shape of a circle trough or troughs;

The second container 311 , the fourth container 621 and the third container 611 are connected to each other. When wired, the wire can be connected to the motor 12 , the display 32 , the power supply element 63 and the switch 66 . ;

The power supply element 63 is accommodated in the third container 611 and can be taken out. The power supply element 63 is electrically connected to the motor 12 and the display 32 , and the power supply element 63 supplies power to the motor 12 . and the display 32, the power supply element 63 is disposed near the third opening 613, and the power supply element 63 can be a general disposable battery element, a rechargeable battery element or various battery elements;

The handle 64 is sleeved on one end of the third body 61 , the handle 64 is close to the third opening 613 , the handle 64 is away from the fourth opening 614 , and the handle 64 is hollow Cylindrical shape, the outer peripheral surface of the handle 64 can be provided with a plurality of grooves for the user to have an anti-slip effect;

The first outer cover 65 is assembled at the third opening 613 , the power supply element 63 is limited by the first outer cover 65 and does not come out of the third body 61 , and one end of the first outer cover 65 is In the shape of an external thread, the first outer cover 65 is screwed with the third opening 613, and the first outer cover 65 is in the shape of a circular body;

The two switches 66 are accommodated in the third body 61 , each switch 66 is disposed at each third through-slot 615 , the two switches 66 are electrically connected to the motor 12 and the power supply element 63 , the The switch 66 can start the motor 32 to rotate, the motor 12 drives the planetary gear set 13 to rotate, and the planetary gear set 13 drives the first driving member 14 and the second driving member 15 to rotate together. A switch 66 It controls the motor 12 to rotate clockwise, and another switch 66 controls the motor 12 to rotate counterclockwise;

The second outer cover 67 is assembled at the fourth opening 614 , the second outer cover 67 is in the shape of an external thread, the second outer cover 67 is screwed with the fourth opening 614 , and the first outer cover 67 is screwed together with the fourth opening 614 . The cover 65 and the second outer cover 67 are relatively positive. The first outer cover 65 and the second outer cover 67 are assembled on both ends of the third body 61 . The first outer cover 65 is connected to the first outer cover 65 . The two outer covers 67 are separated from each other, and the second outer covers 66 are in the shape of a circle;

As shown in FIG. 5 , the axis of the third body 61 is connected to a first axis 68 , the axis perpendicular to the axis 68 is a second axis 681 , and the axis of the connecting member 62 is connected to a first axis 68 . The third axis 682, the third axis 682 is offset by an angle 683 relative to the second axis 681, that is, the angle 683 is offset between the second body group 30 and the first connecting member 62 and the third body 61, The angle 683 is between 5 degrees and 20 degrees, the angle 683 is between 8 degrees and 16 degrees, and the angle 683 is 10 degrees or 12 degrees.

Please refer to FIG. 6 to FIG. 9 , part of the first body group 10 is hidden in the second body In the body assembly 30, the second fitting portion 23 is fitted on the first fitting portion 111, so that the strain gauge seat 20 cannot rotate relative to the first body 11, and the display 32 is assembled on the first fitting portion 111. At the first through groove 315, the abutting member 33 is hidden in the second body 31, the strain gauge 40 is accommodated in the accommodating groove 22, and the fixing member 50 is inserted through the first fixing portion 24 and the second fixing portion 313, so that the strain gauge seat 20 cannot rotate relative to the third body 31, the power supply element 63 is hidden in the third body 61, and the handle 64 is sleeved on the third body 61. One end of the three main bodies 61 , the first outer cover 65 and the second outer cover 67 are assembled on two ends of the third main body 61 respectively, and the connecting member 62 is combined with the second main body 31 and the third main body 61 .

During operation, the motor 12 can be selected to be driven, or rotated by the second body 31 or the third body 61. When driven by the motor 12, the switch 66 is controlled to start the motor 12 and then drive the planetary gear set 13 to When the first body 11 rotates, the planetary gear set 13 drives the first driving member 14 and the second driving member 15 to rotate in the strain gauge seat 20 to rotate the workpiece sleeved on the driving portion 151 .

The switches 66 are two to select clockwise or counterclockwise rotation of the motor 12 .

When not driven by the motor 32, the second body 31 is rotated to rotate the strain gauge base 20, and the strain gauge base 20 drives the first body set 10 to rotate. When rotating, the strain gauge 40 can sense the The torsional deformation of the strain gauge base 20 is transmitted to the display 32, so that the display 32 displays the torque value during rotation, or the display 32 emits a prompt sound when the rotation reaches a preset torque value.

That is, when the motor 12 drives the planetary gear set 13 , the first driving member 14 and the second driving member 15 to rotate, the torque value cannot be detected by the strain gauge 40 , and is driven by the second body 31 . When the strain gauge base 20 and the first body group 10 are rotated, the strain gauge 40 can detect the torque value thereof.

Please continue to refer to FIG. 10 to FIG. 11. FIG. 10 is an exploded perspective view of some components of the second embodiment of the present invention, and FIG. 11 is a perspective view of the second embodiment of the present invention. The second body group 30 and the third body 60 are integrally shaped, the two third through-slots 615 are pierced through the third body 31, and the third through-slots 615 are connected to the third body 31. The two accommodating grooves 311 are in the same shape, the third through groove 615 is disposed between the second opening 314 and the first through groove 315 , the axis of the third through groove 615 and the axis of the second accommodating groove 311 The hearts are perpendicular to each other, the power supply element 63 is accommodated in the second accommodating groove 311 , the handle 64 is sleeved on one end of the second body 31 , and the handle 64 is located near the second opening 314 , The second opening 314 is in the shape of an internal thread, the first outer cover 65 is screwed with the second opening 314 , the two switches 66 are arranged at the second body 31 , and each switch 66 is arranged at each At a third through slot 615 , the two switches 66 are disposed between the display 32 and the handle 64 .

In another embodiment of the present invention, the first driving member 14 and the second driving member 15 are integrally formed, that is, the first driving member 14 is directly provided with the second driving member 15 and the driving portion 151 .

In another embodiment of the present invention, a first washer may be provided between the strain gauge base 20 and the second body 31 , and a second washer may be provided between the strain gauge should 20 and the first driving member 14 , And close to the second opening 314 can be provided with a sealing ring, so that each liquid can be prevented from entering the second container 311 from the first opening 312 or the second opening 314. Liquid effect.

In another embodiment of the present invention, the switch 66 can be one, and the switch 66 can be pressed once That is, the motor 12 is controlled to rotate clockwise, and the switch 66 is pressed again to control the motor 12 to rotate counterclockwise.

The advantages of the torque screwdriver structure of the present invention are:

1. The first body group 10 is accommodated in the first accommodating groove 21 , the driving portion 151 is protruding from one end of the strain gauge seat 20 , the motor 12 is protruded from the other end of the strain gauge seat 20 , Both the first body set 10 and the strain gauge seat 20 are hidden in the second body 31 , and only the driving portion 151 protrudes out of the second body 31 , that is, the section at the fixing member 50 is For the first body 11 , the strain gauge base 20 and the second body 31 , there is a better assembly structure among the three, and the assembly structure is an overlapping type.

2. The force application point is closer to the driving part 151 than the resistance point. When holding the second body 31, the force application point is farther from the second body 31 than the resistance point. When force is applied, the force application point is relatively When the resistance point is far away from the place where the second body 31 is held, the force will pass through the strain gauge seat 20 in a reverse direction to have a better force application state.

3. The strain gauge 40 is located between the force application point and the resistance point. The strain gauge 40 is used to detect the torsional state of the strain gauge seat 20, and the force application point and the resistance point are hidden from the second force point. inside the body 31 .

4. The strain gauge base 20 is assembled on the second body 31 by the fixing member 50 , and the first body set 10 is limited by the strain gauge base 20 and the abutting member 33 and will not be placed on the second body 31 . The second body 31 is displaced inside, and there is a better assembly structure among the first body group 10 , the strain gauge seat 20 and the second body 31 .

5. The first body set 10 and the strain gauge seat 20 are all hidden in the second body 31, so the first body set 10, the strain gauge seat 20 and the strain gauge 40 can all be affected by the second body 31. Ontology 31 is guaranteed Therefore, the strain gauge seat 20 and the strain gauge 40 can be protected from damage due to falling or impact, and the first opening 312 , the second opening 314 and the first through groove 315 are sealed at three places. As long as it is good, it can have a liquid-proof effect. In the structure of the torque screwdriver, there are only three places to be considered for waterproofing and liquid-proofing. This structure is better.

6. The external appearance of the torque driver is the second body 31 and the display 32 and the protruding driving portion 151 .

7. The strain gauge 40 is accommodated in the accommodating groove 22, and the strain gauge 40 senses the deformation of the strain gauge seat 20 and transmits it to the display 32, so that the display 32 displays the torque value or issues a prompt Voice

8. The two switches 66 can respectively control the motor 12 to rotate clockwise or counterclockwise, which is convenient.

9. Please refer to FIG. 10 and FIG. 11. When the second body group 30 and the third body group 60 are integrated, the cost of the torque driver structure of the present invention is reduced.

Therefore, the structure of the torque screwdriver of the present invention has industrial applicability, novelty and progress, and can meet the application requirements of the invention patent.

10: The first body group

20: Strain gauge holder

21: The first tank

22: accommodating slot

23: The second set of joints

24: The first fixed part

30: Second Ontology Group

40: Strain gauge

50: Fixtures

60: The third ontology group

Claims (15)

A torque screwdriver structure includes: a first body set, the first body set is in the shape of a round rod, and the first body set is provided with a first body, a motor, a planetary gear set, a first driving member and a second driving member; The first system is provided with at least one first fitting part; One end of the motor is assembled with the first body; The planetary gear set is accommodated in the first body, one end of the planetary gear set is assembled with the motor, and the motor drives the planetary gear set to rotate in the first body; One end of the first driving member is assembled with the planetary gear set, the planetary gear set drives the first driving member to rotate, and the planetary gear set is arranged between the motor and the first driving member; One end of the second driving member is provided with a driving portion, and the other end of the second driving member is assembled with the first driving member; A strain gauge seat, the strain gauge seat is assembled with the first body group, the strain gauge seat is sleeved on the first body group, the strain gauge seat is in the shape of a cylinder, and the strain gauge seat is in the shape of a cylinder. A first accommodating groove is provided, the first accommodating groove runs through the strain gauge seat, the first body assembly is accommodated in the first accommodating groove, the driving part is protruding from one end of the strain gauge seat, the The motor is protruded from the other end of the strain gauge seat, the first accommodating groove is in the shape of a circular groove, the strain gauge seat is provided with an accommodating groove, and the accommodating groove is in communication with the first accommodating groove. The rear end of the strain gauge seat is provided with at least one second fitting portion, the second fitting portion is fitted at the first fitting portion, and the strain gauge seat is limited by the first fitting portion and cannot be Rotating relative to the first body group, one end of the strain gauge seat is provided with two first fixing portions, and the accommodating groove is arranged between the first fixing portion and the second fitting portion; A second body set, the first body set and the strain gauge seat are accommodated in the second body set inside, the driving part is protruding out of the second body, and the second body set is provided with a second body, a display and an abutting member; The second body is provided with a second accommodating groove, the second accommodating groove transversely penetrates the second body, one end of the second body is provided with a first opening, and the strain gauge seat is set in the second accommodating groove , the strain gauge seat is set near the first opening, the second body is provided with two second fixing parts, the second fixing parts are set near the first opening, and each second fixing part is Opposite to each first fixing portion, the other end of the second body is provided with a second opening, the first opening and the second opening are respectively set at both ends of the second container, the second body is A first through groove is provided, and the first through groove communicates with the second accommodating groove; The display is assembled at the first through slot, and the display and the motor are electrically connected; The abutting member is assembled in the second body, and the abutting member can restrict the motor from shifting and rotating in the second container; a strain gauge, the strain gauge is a detectable side torsional deformation amount, the strain gauge is used for detecting the torsional deformation amount of the strain gauge base, the strain gauge is electrically connected with the display, the strain gauge is a capacity disposed at the accommodating groove, the strain gauge can sense the deformation of the strain gauge seat and transmit it to the display; Two fixing pieces, the fixing pieces pass through the first fixing part and the second fixing part, so that the strain gauge seat and the second body are assembled together, and the strain gauge seat is limited by the two second fixing parts The part and the two fixing parts cannot be rotated relative to the second body, and the strain gauge seat cannot be disengaged from the second accommodating groove; A third body group, the third body group is slightly T-shaped, and the third body group is related to the third body group. The two main bodies are arranged in groups, and the third main body is provided with a third main body, a connecting piece, a power supply element and two switches; The third body system is provided with a third accommodating groove, the third body system is provided with a second through groove, the second through groove and the third accommodating groove are in the same shape, and the third body system is provided with two third Through grooves, there is a distance between the two and third through grooves; One end of the connecting piece is connected to the second through slot, the other end of the connecting piece is connected to the second opening, the connecting piece is connected to the second body and the third body, and a first body is arranged inside the connecting piece. Four accommodating grooves, the fourth accommodating groove runs through the connecting piece; The power supply element is accommodated in the third container and can be taken out, the power supply element is electrically connected with the motor and the display, and the power supply element supplies power to the motor and the display; The two switches are accommodated in the third body, each switch is located at each third through-slot, the two switches are electrically connected to the motor and the power supply element, and the switches can activate the motor to rotate , the motor drives the planetary gear set to rotate, and the planetary gear set drives the first driving member and the second driving member to rotate integrally. The torque screwdriver structure according to claim 1, wherein the first main body is in the shape of a hollow round rod, the first fitting portion is in the shape of an elongated convex block, and the first fitting portion is arranged on the On the outer peripheral surface of the first body, the first fitting parts are plural, the plurality of first fitting parts are arranged in a ring shape with the axis of the first body, or the first fitting parts are Two, the two first fitting parts are relatively straight, the first body is provided with annularly arranged teeth; the motor is protruding from a rotating shaft, and the other end of the motor is provided with an abutting part, the abutting part is It is in the shape of two rectangular parallelepiped bumps; the first driving member is in the shape of a ring, and a first set part is arranged inside the first driving part, and the first set part is transversely penetrated through the first driving part , the first set of departments It is in the shape of a hexagonal slot, or the first set part is in the shape of a quadrangular slot; the second driving part is in the shape of a round rod, the driving part is in the shape of a hexagonal slot or a square head, and the other end of the second driving part is in the shape of a hexagonal slot. It is provided with a second set part, the second set part is set up with the first set part, the second set part is away from the driving part, and the second set part is accommodating in the first group setting. The torque screwdriver structure as claimed in claim 1, wherein the number of the second engaging portion is matched with the number of the first engaging portion, one end of the second engaging portion is open, and the second engaging portion is open. The joint part is in the shape of a rectangular groove, the second joint part is in a tight fit shape with the first joint part, the first fixed part is in the shape of a circular hole, and the two first fixed parts pass through the strain A gauge seat, the two first fixing parts are symmetrical relative to the strain gauge seat. The torque screwdriver structure as claimed in claim 1, wherein the second fitting portion and the accommodating groove are spaced 90 degrees apart, and the first fixing portion and the accommodating groove are disposed in the strain gauge seat at the same time On the side, the distance between the second fitting portion and the accommodating groove is close to or equal to the distance between the first fixing portion and the accommodating groove. The torque screwdriver structure according to claim 1, wherein the second main body is in the shape of a round rod, the second accommodating groove is in the shape of a hollow circular groove, the second fixing portion is in the shape of a round hole, and the second The fixing part is in the shape of an internal thread, the first through groove is in the shape of a rectangular groove, the second body is provided with a first joint part, the first joint part is in the shape of a round hole, and the first joint part is in the shape of a round hole. The display is in the shape of an internal thread; the display can be provided with a plurality of buttons and each display screen; the abutting member is in the shape of a cuboid, the abutting member abuts against the abutting portion, and the abutting member is provided with a first Two joint parts, the second joint part is opposite to the first joint part; It is in the shape of an internal thread; the second body set is provided with a joint, and the joint is external In the shape of a thread, the coupling element is inserted through the first coupling portion and screwed to the second coupling portion, so that the abutting element is fastened in the second body. The torque screwdriver structure of claim 1, wherein the strain gauge causes the display to display the torque value during rotation, or when a preset torque value is reached, the display displays the torque value and emits a prompt sound. The torque screwdriver structure according to claim 1, wherein the fixing member is in the shape of a cylinder or a screwed member. The torque driver structure of claim 1, wherein the first fixing portion is closest to the first opening, the second fitting portion is farthest away from the first opening, and the accommodating groove is located between the first opening Between the fixing portion and the second fitting portion, the strain gauge seat is assembled on the second body limited by the fixing member, and the second fitting portion is fitted on the first fitting portion, The first body set is limited by the strain gauge seat and the abutting member and cannot be displaced in the second body, and cannot come out of the second body set; the first fixing part is closest to the The first opening, the first body set and the strain gauge seat are hidden in the second body, and only the driving part protrudes from the second body; the driving part is sleeved on the workpiece to rotate the second body In the case of the main body, the place where the strain gauge seat and the second body are assembled is the force application point, that is, the position of the fixing piece is the force application point, and the second sleeve part and the first sleeve part are connected as the force application point. The force-applying point is closer to the driving part than the force-applying point, that is, when the second body is held, the force-applying point is farther from the second body than the force-applying point, and the strain gauge is located at the force applying point Between the force resistance point, the strain gauge measures the torsional state of the strain gauge seat, and the force application point and the force resistance point are both hidden in the second body. The torque screwdriver structure according to claim 1, wherein the third body is a round rod body shape, the third accommodating groove runs through the third body horizontally, the third accommodating groove is in the shape of a circular groove, the second through-groove is in the shape of a circular perforation, and one end of the third accommodating groove is provided with a third opening , the third opening is in the shape of an internal thread, the other end of the third container is provided with a fourth opening, the fourth opening is in the shape of an internal thread, the third through groove is in the shape of a circular hole, and the third through hole is in the shape of a circular hole. The axis of the groove is perpendicular to the axis of the third body; the cross-section of the connector is in the shape of a circle, and the fourth container is in the shape of a circular groove; the second container, the fourth container and the The third container is in a connected shape, and the wire can be connected to the motor, the display, the power supply element and the switch when connected by wire; the power supply element is arranged near the third opening, and the power supply element can be Generally, disposable battery components, rechargeable battery components or various battery components; the third body set is provided with a handle, the handle is sleeved on one end of the third body, and the handle is connected to the third body. The openings are close to each other, the handle is far away from the fourth opening, the handle is in the shape of a hollow cylinder, and the outer peripheral surface of the handle can be provided with a plurality of grooves; the third body set is provided with a first An outer cover, the first outer cover is assembled at the third opening, the power supply element is limited by the first outer cover and does not come out of the third body, and one end of the first outer cover is an external thread The first outer cover is screwed with the third opening, and the first outer cover is in the shape of a circular body; one opening relationship controls the motor to rotate clockwise, and the other opening relationship controls the motor to reverse The hour hand rotates; the third body is set with a second outer cover, the second outer cover is assembled at the fourth opening, the second outer cover is in the shape of an external thread, and the second outer cover is Screwed together with the fourth opening, the first outer cover and the second outer cover are relatively positive, and the first outer cover and the second outer cover are assembled on both ends of the third body, and the first outer cover and the second outer cover are assembled at both ends of the third body. An outer cover is separated from the second outer cover, and the second outer cover is in the shape of a circle. The torque driver structure as claimed in claim 1, wherein the axis of the third body is a first axis, the axis perpendicular to the axis is a second axis, and the connecting piece has a second axis. The shaft center has a third axis, and the third axis is offset by an angle relative to the second axis, that is, the second body group and the first connecting piece and the third body are offset by the angle, and the angle is It is between 5 degrees and 20 degrees, or the angle is between 8 degrees and 15 degrees, or the angle is 10 degrees or 12 degrees. The torque screwdriver structure as claimed in claim 1, wherein, during operation, the motor can be selected to be driven, or rotated by the second body or the third body, and when driven by the motor, the switch is controlled to start the motor and then The planetary gear set is driven to rotate in the first body, and the planetary gear set drives the first driving member and the second driving member to rotate in the strain gauge seat to rotate the workpiece sleeved on the driving part; When not driven by the motor, the second body is rotated to rotate the strain gauge seat, and the strain gauge seat drives the first body group to rotate. When rotating, the strain gauge can sense the torsion of the strain gauge seat The deformation amount is transmitted to the display, so that the display can display the torque value during rotation, or when the rotation reaches a preset torque value, the display will issue a prompt sound; that is, the motor drives the planetary gear set, the When the first driving member and the second driving member rotate, the torque value cannot be detected by the strain gauge. When the second body drives the strain gauge seat and the first body group to rotate, the strain gauge can detect the torque value. torque value. The torque driver structure according to claim 9, wherein the second body set and the third body are integral, the two third through grooves are pierced on the third body, and the third through grooves are The third through-slot is connected between the second opening and the first through-slot, and the axis of the third through-slot is perpendicular to the axis of the second through-slot , the power supply element is accommodated in the second accommodating groove, the handle is sleeved on one end of the second body, the handle is located near the second opening, and the second opening is in the shape of an internal thread , the first outer cover is screwed with the second opening, the two openings are located at the second body, and each opening is located at At each third slot, the two openings are set between the display and the handle. The torque driver structure according to claim 1, wherein the first driving member and the second driving member are integrally formed, that is, the first driving member is directly provided with the second driving member and the driving portion. The torque driver structure as claimed in claim 1, wherein a first washer may be provided between the strain gauge seat and the second body, and a second washer may be provided between the strain gauge and the first driving member The gasket and a sealing ring can be provided near the second opening, so that liquids can be prevented from entering the second container from the first opening or the second opening. The torque screwdriver structure of claim 1, wherein the switch relationship can be one, and pressing the switch once will control the motor to rotate clockwise, and pressing the switch again will control the motor to rotate counterclockwise.

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