TWI780897B - Hand tool with two handles - Google Patents

Abstract

A hand tool includes a first handle, a second handle, a reinforcing device, and a fastening assembly. The first handle is provided with at least a first working portion and a first pivoting portion. The second handle is provided with at least a second working portion and a second pivoting portion. The reinforcing device is arranged between the first handle and the second handle and is configured to abut against the first pivot portion and the second pivot portion in surface contact. The fastening assembly inserts through the first pivoting portion, the second pivoting portion, and the reinforcing device, so that the first pivoting portion and the second pivoting portion are pivotally connected to each other.

Description

Two-handled hand tools

The invention relates to a double-handled hand tool, especially a double-handled hand tool utilizing the principle of leverage.

Generally, a double-handled hand tool using the principle of leverage is generally composed of two working arms that are pivotally connected to each other. The two working arms are pivotally connected to form a pivot point as a fulcrum, and each working arm has a The handle and the working head on opposite sides of the pivot point are used to transform the external force applied on the handle into a larger force on the working head.

However, although the two working arms can be pivoted to each other only by connecting the two working arms with a pivot, when the external force applied to the handle is too large, the two working arms will inevitably shake or deviate, causing the working head to fail. Work appropriately.

The double handle hand tool provided by the present invention includes a first handle, a second handle, a strengthening device and a fastening group. The first handle is provided with at least a first working part and a first pivot part. The second handle is provided with at least a second working part and a second pivot part. The reinforcing device is arranged between the first handle and the second handle and is configured as a surface It abuts against the first pivotal portion and the second pivotal portion in contact. The fastening group passes through the first pivotal part, the second pivotal part and the reinforcing device, so that the first pivotal part and the second pivotal part are pivotally connected to each other.

In an embodiment of the present invention, the reinforcing device includes a first spacer, a second spacer, and a spacer between the first spacer and the second spacer. The first spacer abuts against the first pivot portion in surface contact, the second spacer abuts against the second pivot portion in surface contact, and the spacers respectively abut against the first spacer and the second spacer.

In an embodiment of the present invention, the first pivotal portion has a first abutting surface. The first handle is further provided with a first abutting groove adjacent to the first abutting surface and a first accommodating groove spaced apart from the first abutting groove. The second pivot portion has a second abutting surface. The second handle is further provided with a second abutting groove adjacent to the second abutting surface and a second accommodating groove spaced apart from the second abutting groove. The first spacer is accommodated in the first abutting groove and the second accommodating groove and has a first outer surface abutting against the first abutting surface, a first inner surface opposite to the first outer surface, and a penetrating The first through hole on the first outer surface and the first inner surface. The second gasket is accommodated in the second abutting groove and the first accommodating groove and has a second outer surface abutting on the second abutting surface, a second inner surface opposite to the second outer surface, and a penetrating The second perforation on the second outer surface and the second inner surface. The spacer has a first end surface, a second end surface opposite to the first end surface, and a third through hole passing through the first end surface and the second end surface. The fastening group includes a screw and a nut screwed on the screw, and the screw passes through the first pivot portion, the second pivot portion, the first through hole, the second through hole and the third through hole.

In an embodiment of the present invention, the first spacer and the second spacer are disc-shaped and have a circular cross-sectional shape, and the spacer is cylindrical and has a circular cross-sectional shape.

In an embodiment of the invention, the first spacer, the second spacer and the spacer are made of metal.

In an embodiment of the present invention, the number of at least one first working part of the first handle is two, and the two first working parts are respectively located at the two ends of the first handle, and the first pivot joint is located at the between. The first handle is further provided with a first pressing portion located outside the first handle, and the first pressing portion is located between one of the two first working portions and the first pivotal portion. The number of at least one second working part of the second handle is two, and the two second working parts are respectively located at the two ends of the second handle, and the second pivot part is located between the two second working parts. The second handle is further provided with a second pressing part located outside the second handle, and the second pressing part is located between one of the two second working parts and the second pivotal part.

In one embodiment of the present invention, the first handle is further provided with at least one first limiting rib located inside the first handle, and the second handle is additionally provided with at least one second limiting rib located inside the second handle , and at least one first limiting rib abuts against at least one second limiting rib.

In an embodiment of the present invention, the number of at least one first limiting rib is two, and the two first limiting ribs are spaced apart from each other. The number of at least one second limiting rib is two, the two second limiting ribs are spaced apart, and one of the two first limiting ribs is configured to be positioned between the two second limiting ribs as the first handle and the second handle pivot to each other. Between the two limiting ribs.

In another embodiment of the present invention, the number of at least one first limiting rib is two, and the two first limiting ribs are alternately arranged along a width direction of the first handle. The number of at least one second limiting rib is two, the two second limiting ribs are arranged alternately along a width direction of the second handle, and the two first limiting ribs are configured to follow the first handle and The second handles pivot to each other and abut against the two second limiting ribs respectively.

In another embodiment of the present invention, the first handle and the second handle are made of metal.

In another embodiment of the present invention, the double-handled hand tool further includes: an elastic member disposed between the first handle and the second handle and configured to elastically bias the first handle and the second handle outward respectively , and the elastic member is a torsion spring.

Based on the above, the double-handled hand tool provided by the above-mentioned embodiments of the present invention is arranged between the first handle and the second handle through the strengthening device and is configured to abut against the first pivot portion and the second handle in surface contact. The pivot joint enables the first handle and the second handle to pivot mutually with the fastening group as a fulcrum, and prevents the first handle and the second handle from shaking or shifting relative to the fastening group when an external force is applied.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

10: The first handle

11: The first working department

12: The first pivot joint

121: the first contact surface

13: The first abutment groove

14: The first storage tank

15: The first pressing part

16: The first limiting rib

20: second handle

21: The second working department

22: Second pivot joint

221: the second contact surface

23: The second abutment groove

24: The second storage tank

25: The second pressing part

26: The second limiting rib

30: Strengthening device

31: First gasket

311: the first lateral surface

312: the first inner side

313: First piercing

32:Second spacer

321: second outer surface

322: second inner side

323:Second perforation

33: spacer

331: first end face

332: second end face

333: The third perforation

40: fastening group

41: screw

42:Nut

10a: The first handle

20a: second handle

50: Elastic parts

10b: the first handle

16b: the first limiting rib

20b: second handle

26b: the second limiting rib

Fig. 1 is a schematic view of the appearance of the first embodiment of the double-handled hand tool of the present invention.

Fig. 2 is an exploded schematic diagram of the two-handled hand tool shown in Fig. 1 .

Fig. 3 is a schematic cross-sectional view of the double-handled hand tool shown in Fig. 1 .

Fig. 4 is a schematic view of the appearance of the second embodiment of the double-handled hand tool of the present invention.

Fig. 5 is an exploded schematic view of the third embodiment of the double-handled hand tool of the present invention.

6 and 7 are schematic cross-sectional views of the double-handled hand tool shown in FIG. 5 .

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. For the referenced symbol numbers in the following description, when the same symbol symbols appear in different drawings, they will be regarded as the same or similar elements. These embodiments are only a part of the present invention, and do not reveal all possible implementation modes of the present invention. Rather, these embodiments are only examples of a two-handled tool within the scope of the patent application of the present invention.

Fig. 1 is a schematic view of the appearance of the first embodiment of the double-handled hand tool of the present invention. Fig. 2 is an exploded schematic diagram of the two-handled hand tool shown in Fig. 1 . Fig. 3 is a schematic cross-sectional view of the double-handled hand tool shown in Fig. 1 . Figure 4 FIG. 5 is a schematic view of the use of the double-handled hand tool shown in FIG. 1 . Please refer to FIG. 1 to FIG. 3 in sequence, the double-handled hand tool of this embodiment includes a first handle 10 , a second handle 20 , a strengthening device 30 and a fastening group 40 . The first handle 10 is provided with at least a first working portion 11 and a first pivot portion 12 . The second handle 20 is provided with at least a second working portion 21 and a second pivot portion 22 . The reinforcing device 30 is disposed between the first handle 10 and the second handle 20 and configured to abut against the first pivot portion 12 and the second pivot portion 22 in surface contact. The fastening group 40 passes through the first pivotal portion 12 , the second pivotal portion 22 and the reinforcement device 30 , so that the first pivotal portion 12 and the second pivotal portion 22 are pivotally connected to each other.

Further, the reinforcement device 30 includes a first gasket 31 , a second gasket 32 and a spacer 33 between the first gasket 31 and the second gasket 32 . The first gasket 31 abuts against the first pivot portion 12 in surface contact, the second gasket 32 abuts against the second pivot portion 22 in surface contact, and the spacers 33 abut against the first gasket 31 and the first pivot portion 22 respectively. The second spacer 32 . Therefore, by the first gasket 31 and the second gasket 32 abutting against the first pivotal portion 12 and the second pivotal portion 22 in surface contact respectively, the reinforcing device 30 and the first pivotal portion 12 and the second pivotal portion 22 are added. The contact area between the pivotal joints 22 prevents the first handle 10 and the second handle 20 from shaking or shifting relative to the fastening group 40 when an external force is applied.

In order to enable the first washer 31 and the second washer 32 to be stably arranged on the first handle 10 and the second handle 20 respectively to abut against the first pivotal portion 12 and the second pivotal portion 22 in surface contact, the second A pivot portion 12 has a first abutting surface 121, and the first handle 10 is further provided with a first abutting groove 13 adjacent to the first abutting surface 121 and a first abutting groove 13 spaced apart from the first abutting groove 13. Accommodating groove 14. The second pivot portion 22 has a second abutting surface 221, and the second handle 20 is further provided with a second abutting groove 23 adjacent to the second abutting surface 221 and a first abutting groove 23 spaced apart from the second abutting groove 23. Two accommodating grooves 24 . The first gasket 31 is accommodated in the first abutting groove 13 and the second accommodating groove 24 and has a first outer surface 311 abutting against the first abutting surface 121 , a second outer surface 311 opposite to the first outer surface 311 . An inner side 312 and a through the first outer side 311 and the first inner side 312 of the first perforation 313 . The second gasket 32 is accommodated in the second abutting groove 23 and the first accommodating groove 14 and has a second outer surface 321 abutting against the second abutting surface 221 , a second outer surface 321 opposite to the second outer surface 321 . Two inner surfaces 322 and a second through hole 323 passing through the second outer surface 321 and the second inner surface 322 . The spacer 33 has a first end surface 331 , a second end surface 332 opposite to the first end surface 331 , and a third through hole 333 passing through the first end surface 331 and the second end surface 332 . The fastening group 40 includes a screw 41 and a nut 42 screwed on the screw 41. The screw 41 is passed through the first pivotal portion 12, the second pivotal portion 22, the first through hole 313, and the second through hole. 323 and the third through hole 333 .

The first spacer 31 and the second spacer 32 in this embodiment can be disc-shaped and have a circular cross-sectional shape, and the spacer 33 can be cylindrical and have a circular cross-sectional shape. In addition, the first spacer 31 , the second spacer 32 and the spacer 33 can be made of metal, and the first handle 10 and the second handle 20 can be made of plastic.

In this embodiment, the number of at least one first working part 11 of the first handle 10 is two. Between working sections 11. The first handle 10 is further provided with a first pressing portion 15 located outside the first handle 10 , and the first pressing portion 15 is located between one of the two first working portions 11 and the first pivotal portion 12 . There are at least one second working part 21 of the second handle 20 . The two second working parts 21 are respectively located at two ends of the second handle 20 , and the second pivot part 22 is located between the two second working parts 21 . The second handle 20 is further provided with a second pressing portion 25 located outside the second handle 20 , and the second pressing portion 25 is located between one of the two second working portions 21 and the second pivot portion 22 .

Thus, one set of the first working part 11 and the second working part 21 can be adapted to be connected to the pincer hole of the shaft retaining ring, while the other set of the first working part 11 and the second working part 21 can be adapted to be connected to the hole With the pliers hole of the buckle, the double-handled hand tool provided by this embodiment can be applicable to both the shaft buckle and the hole. The buckle can also be attached and detached from the shaft buckle and the hole buckle by simply pressing the first pressing part 15 and the second pressing part 25 to act.

Furthermore, the first handle 10 is further provided with at least one first limiting rib 16 located inside the first handle 10 . The second handle 20 is further provided with at least one second limiting rib 26 located on the inner side of the second handle 20, and at least one first limiting rib 16 abuts against at least one second limiting rib 26 to prevent the first handle from 10 and the second handle 20 swing or shake when they pivot. In this embodiment, the first handle 10 can be provided with two spaced apart first limiting ribs 16, the second handle 20 can be provided with two spaced apart second limiting ribs 26, and the two first limiting ribs One of the ribs 16 is configured to be located between the two second limiting ribs 26 as the first handle 10 and the second handle 20 pivot to each other.

Fig. 4 is a schematic view of the appearance of the second embodiment of the double-handled hand tool of the present invention. The structure of this embodiment is substantially the same as that of the first embodiment, except that the first handle 10 a and the second handle 20 a of this embodiment can be made of metal, and the double-handled hand tool further includes an elastic member 50 . The elastic member 50 is disposed between the first handle 10a and the second handle 20a and configured to elastically bias the first handle 10a and the second handle 20a outward, respectively. In addition, the elastic member 50 can be a torsion spring.

Fig. 5 is an exploded schematic view of the third embodiment of the double-handled hand tool of the present invention. 6 and 7 are schematic cross-sectional views of the double-handled hand tool shown in FIG. 5 . The structure of this embodiment is substantially the same as that of the first embodiment, the difference is that: the two first limiting ribs 16b of the first handle 10b are arranged alternately along a width direction of the first handle 10b, and the two second ribs of the second handle 20b The limiting ribs 26b are alternately arranged along a width direction of the second handle 20b. Therefore, as shown in FIG. 6 and FIG. 7 , the two first limiting ribs 16b are configured to respectively abut against the two second limiting ribs 26b and substantially The shapes are complementary, so as to effectively slow down the shaking or deflection generated when the first handle 10b and the second handle 20b pivot to each other.

To sum up, the double-handled hand tool provided in this embodiment abuts against the first pivotal portion 12 and the second pivotal portion 22 through the first washer 31 and the second washer 32 respectively in surface contact, The contact area between the reinforcing device 30 and the first pivotal portion 12 and the second pivotal portion 22 is increased to prevent the first handle 10 and the second handle 20 from shaking or shifting relative to the fastening group 40 when an external force is applied. In addition, the first handle 10, 10b and the second handle 20, 20b are further respectively provided with a first limiting rib 16, 16b and a second limiting rib 26, 26b, by the first limiting rib 16, 16b and the second The abutment of the limiting ribs 26, 26b can also effectively slow down the shaking or deflection generated when the first handle 10, 10b and the second handle 20, 20b pivot to each other.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

10: The first handle

11: The first working department

12: The first pivot joint

121: the first contact surface

13: The first abutment groove

14: The first storage tank

15: The first pressing part

16: The first limiting rib

20: second handle

21: The second working department

22: Second pivot joint

25: The second pressing part

26: The second limiting rib

30: Strengthening device

31: First gasket

311: the first lateral surface

312: the first inner side

313: First piercing

32:Second spacer

321: second outer surface

322: second inner side

323:Second perforation

33: spacer

331: first end face

332: second end face

333: The third perforation

40: fastening group

41: screw

42:Nut

Claims (14)

A double-handled hand tool, comprising: a first handle provided with at least a first working part and a first pivotal joint; a second handle provided with at least a second working part and a second pivotal joint; A reinforcement device is arranged between the first handle and the second handle and is configured to abut against the first pivot portion and the second pivot portion in surface contact; and a fastening group is passed through the The first pivotal portion, the second pivotal portion, and the strengthening device are used to pivotally connect the first pivotal portion and the second pivotal portion to each other. The double-handled hand tool as claimed in claim 1, wherein the strengthening device includes a first gasket, a second gasket, and a spacer between the first gasket and the second gasket, the first gasket A gasket abuts against the first pivotal portion in surface contact, the second gasket abuts against the second pivotal portion in surface contact, and the spacer abuts against the first gasket and the second pivotal portion respectively. Two spacers. The double-handled hand tool according to claim 2, wherein the first pivotal part has a first abutment surface, and the first handle is further provided with a first abutment groove adjacent to the first abutment surface and a The first abutting groove is spaced apart from the first accommodating groove, the second pivot portion has a second abutting surface, and the second handle is further provided with a second abutting groove adjacent to the second abutting surface and a second accommodating groove spaced apart from the second abutting groove; the first gasket is accommodated in the first abutting groove and the second accommodating groove and has a butt against the first abutting surface a first outer surface of the first outer surface, a first inner surface opposite to the first outer surface, and a first through hole passing through the first outer surface and the first inner surface; the second gasket is accommodated in the second The connecting groove and the first accommodating groove have a second outer surface abutting against the second abutting surface, a second inner surface opposite to the second outer surface, and a second outer surface penetrating through the second outer surface and the second outer surface. a second perforation on the second inner side; The spacer has a first end surface, a second end surface opposite to the first end surface, and a third through hole passing through the first end surface and the second end surface; the fastening group includes a screw and a screw on As for the nut of the screw member, the screw member passes through the first pivot portion, the second pivot portion, the first through hole, the second through hole and the third through hole. The double-handled hand tool as claimed in claim 2, wherein the first spacer and the second spacer are disc-shaped and have a circular cross-sectional shape, and the spacer is cylindrical and has a circular cross-sectional shape. The dual-handled hand tool as claimed in claim 2, wherein the first spacer, the second spacer and the spacer are made of metal. The double-handled hand tool as claimed in any one of claims 1 to 5, wherein the number of the at least one first working part of the first handle is two, and the two first working parts are respectively located at the two ends, the first pivotal part is located between the two first working parts, and the first handle is further provided with a first pressing part located outside the first handle, and the first pressing part is located between the two first working parts. Between one of the parts and the first pivotal part, the number of the at least one second working part of the second handle is two, and the two second working parts are respectively located at the two ends of the second handle. The two pivot joints are located between the two second working parts, and the second handle is further provided with a second pressing part located outside the second handle, and the second pressing part is located between one of the two second working parts and between the second pivot joints. The double-handled hand tool as claimed in claim 6, wherein the first handle is additionally provided with at least one first limiting rib located inside the first handle, and the second handle is additionally provided with at least one rib located inside the second handle. The second limiting rib on the inner side, and the at least one first limiting rib abuts against the at least one second limiting rib. The double-handled hand tool as claimed in claim 7, wherein the number of the at least one first limiting rib is two, the two first limiting ribs are spaced apart, and the number of the at least one second limiting rib is two , the two The two limiting ribs are spaced apart, and one of the two first limiting ribs is configured to be located between the two second limiting ribs as the first handle and the second handle pivot to each other. The double-handled hand tool as claimed in item 7, wherein the number of the at least one first limiting rib is two, and the two first limiting ribs are staggered with each other along a width direction of the first handle, and the at least one There are two second limiting ribs, the two second limiting ribs are arranged in a staggered manner along a width direction of the second handle, and the two first limiting ribs are configured to follow the first handle and the second limiting rib. The two handles pivot to each other and lean against the two second limiting ribs respectively. The dual-handled hand tool as claimed in claim 6, wherein the first handle and the second handle are made of metal. The double-handled hand tool as claimed in claim 9, further comprising: an elastic member disposed between the first handle and the second handle and configured to elastically bias the first handle and the second handle outward respectively Two handles, and the elastic member is a torsion spring. A double-handled hand tool, comprising: a first handle, provided with at least a first working part and a first pivot joint part, and the first handle is further provided with at least one first limiter located inside the first handle Bit rib; a second handle is provided with at least one second working portion and a second pivot joint, and the second handle is further provided with at least one second limiting rib located inside the second handle, the at least A first limiting rib and the at least one second limiting rib can be abutted against each other; and a fastening group is provided through the first pivotal part and the second pivotal part, so that the first pivotal The part and the second pivot part are pivotally connected to each other. The double-handled hand tool as claimed in claim 12, wherein the number of the at least one first limiting rib is two, the two first limiting ribs are spaced apart, and the number of the at least one second limiting rib is two , the two The second limiting ribs are spaced apart, and one of the two first limiting ribs is configured to be located between the two second limiting ribs as the first handle and the second handle pivot to each other. The double-handled hand tool as claimed in claim 12, wherein the number of the at least one first limiting rib is two, and the two first limiting ribs are arranged in a staggered manner along a width direction of the first handle, and the at least one There are two second limiting ribs, the two second limiting ribs are arranged in a staggered manner along a width direction of the second handle, and the two first limiting ribs are configured to follow the first handle and the second limiting rib. The two handles pivot to each other and lean against the two second limiting ribs respectively.

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