TW201703942A - Tool head with which assembly is easy and structural strength is high - Google Patents

Abstract

The present invention provides a tool head, which includes a receiving and carrying member, a driving member, and an urging and tightening member. The receiving and carrying member is provided with a through hole. The through hole includes a first joining match section and a first tightening match section. The driving member is combined with the receiving and carrying member. The driving member is inserted in the through hole. The driving member is provided with a second tightening match section, a second joining match section and a driving section. The second tightening match section corresponds to the first tightening match section. The second joining match section corresponds to the first joining match section. The driving member is recessed with an insertion slot and at least one recess groove. The recess groove is arranged on a radial outer periphery recessed between the insertion slot and the second tightening match section. One end of the urging and tightening member is arranged in the insertion slot. The urging and tightening member compresses the second tightening match section for expansion, so as to tightly match with the first tightening match section. The tightening match relation between the first tightening match section and the second tightening match section is achieved by the compression of the urging and tightening member so that assembly is easy and structural strength is high.

Description

Tool head

The invention mainly discloses a tool head, in particular a tool head which is easy to assemble and has high structural strength.

Please refer to the "hand tool connecting rod" patent of the Chinese Patent No. I352648, which is a hand tool connecting rod. The hand tool connecting rod comprises: a rod body having a connecting section, a polygonal section connecting the connecting section, and Continuing a cylindrical section of the polygonal section, the connecting section, the polygonal section, and the cylindrical section are concentric, and the outer diameter of the cylindrical section is smaller than the outer diameter of the polygonal section; and a sleeve having a sleeve a polygonal groove, a cylindrical groove connecting the one of the polygonal grooves, and a set of grooves, the polygonal groove receiving the polygonal segment of the rod body, and the inner wall thereof is abutting against the periphery of the polygonal segment, the cylindrical groove system The cylindrical section of the rod is received and the cylindrical section is tightly bundled.

However, such a combination method is because the rod body is directly coupled with the sleeve, and when the rod body is fastly rotated by a pneumatic or electric tool, the wall between the corner of the hexagonal hole and the outer circumference is prone to occur because of the large torque of the momentary rotation. Broken, and the hand tool connecting rod cannot be used any more.

In addition, the rod body is directly pressed against the design of the sleeve, because the sleeve is used to drive the member to be driven, so the hardness of the sleeve is greater than the hardness of the receiving member, when the high-hardness sleeve is tightly sleeved on the sleeve. In the case of a rod having a low hardness, when the two are tightly joined by an external force, it is easy to cause the rod having a low hardness to be broken or broken.

Therefore, such unstable products are easily questioned by users, and will seriously affect the brand's goodwill, and cannot be favored by users, and it is necessary to improve them.

In view of the above-described deficiencies in the conventional structure, the inventors have invented a tool head that overcomes all of the disadvantages of the above-described conventional structures.

The main purpose of the tool head of the present invention is to provide a tool head including a receiving member, a driving member and a pressing member, the receiving member comprising a receiving end and a socket end different from the receiving end, A through hole is defined between the receiving end and the socket end, and the through hole communicates with the receiving end and the socket end through the receiving member, the through hole includes a first matching section and a a first tight-distributing section, the first mating section is adjacent to the socket end, the first mating section is located between the receiving end and the socket end, the driving component is coupled to the receiving component, and the driving component comprises a connecting end and a driving end different from the connecting end, the driving member is inserted into the through hole and the driving end of the driving member protrudes from the through end of the receiving member outside the through hole, the driving member Between the connecting end and the driving end, a second tight fitting section, a second fitting section and a driving section are disposed, the second fitting section is adjacent to the connecting end, and the second fitting section corresponds to the a first tight fitting section and abutting against an inner wall surface of the first tight fitting section, the second a matching section is located between the second tight fitting section and the driving section, the second fitting section corresponding to the first fitting section and capable of abutting against an inner wall surface of the first fitting section, wherein the driving component is The connecting end is recessed with a slot and at least one groove. The slot and the groove extend from the connecting end to the driving end, and the groove is disposed in the radial direction of the slot and the second tight fitting portion. Between the outer peripheral edges, and the groove communicates with the outer peripheral edge of the second tight fitting portion in the radial direction, one end of the pressing member is provided with an expanding portion, and the expanding portion is disposed in the slot Relying on the radially inner wall surface of the slot, the expansion portion presses the second tight fitting section to expand, so that the second tight fitting section forms a tight fit with the first tight fitting section, because the first part of the tool head a tight fitting portion and the second tight fitting portion are tightly coupled, and a tight fitting relationship between the first tight fitting portion and the second tight fitting portion can be achieved by pressing the pressing member, so that the receiving portion is engaged The device and the driving member are not arbitrarily separated after being combined with the pressing member, and are easy to assemble and have high structural strength.

The connecting end of the driving member is inserted into the through hole of the receiving end of the receiving member, and the driving end of the driving member protrudes from the through end of the receiving member to the outside of the through hole, the first tight matching portion The maximum width in the radial direction of the through hole is smaller than the maximum width of the first fitting portion in the radial direction of the through hole.

The pressing member has a retaining portion adjacent to the expanding portion, and the retaining portion protrudes out of the slot, the radial width of the retaining portion is greater than the radial direction of the first tight fitting portion along the through hole The minimum width.

The through hole has a receiving portion, and the receiving portion and the first tight matching portion are adjacent to each other and located on a side of the first matching portion different from the first matching portion, the receiving portion is along the side The maximum width of the through hole radial direction is greater than the maximum width of the first tight fitting portion along the radial direction of the through hole, and the width of the retaining portion in the radial direction is smaller than the maximum width of the receiving portion along the radial direction of the through hole Within the segment.

The slot has a screw hole shape, and the expansion portion is an external thread, and the expansion portion is screwed in the slot.

The first tight fitting section and the first fitting section are adjacent to each other, and the second fitting section and the second fitting section are adjacent to each other.

The cross-sectional shape of the second tight-fitting section along the radial direction of the driving member is the same as the cross-section of the first tight-fitting section along the radial direction of the through-hole.

a cross section of the first mating section along a radial direction of the through hole is a regular hexagon, a cross section of the first mating section along a radial direction of the through hole is circular, and a cross section of the second mating section along a radial direction of the driving member is The circular shape, the second matching section has a regular hexagonal cross section along the radial direction of the driving member.

The number of the at least one groove is two, and the two grooves are respectively disposed on the radially opposite sides of the slot.

The through hole has a receiving section adjacent to the receiving end, and the receiving section has a square shape in a radial direction along the through hole and can be sleeved with a driving head of a pneumatic tool or a power tool, and the driving section is set as a screwdriver head.

Other objects, advantages and novel features of the invention will become apparent from the description and appended claims.

The technology, means and functions of the present invention are described in detail with reference to the accompanying drawings.

1 and 2, a perspective view and an exploded perspective view of the tool head of the present invention are shown. The tool head 10 of the present invention includes a receiving member 20, a driving member 30 and a pressing member 40; wherein:

Please refer to FIG. 3 to FIG. 5 for a cross-sectional structural view of the tool head of the present invention. The receiving member 20 includes a receiving end 21 and a sleeve end 22 different from the receiving end 21. The receiving end 21 can be received by a pneumatic tool or a power tool. The receiving member 20 is at the receiving end 21 and the sleeve. A through hole 23 is defined between the connecting end 22, and the through hole 23 extends through the receiving member 20 to communicate with the receiving end 21 and the socket end 22. The through hole 23 includes a first matching section 231 and a first a tight fitting section 232, the first matching section 231 is adjacent to the sleeve end 22, and the first matching section 231 has a regular hexagonal cross section along the radial direction of the through hole 23, and the first tight fitting section 232 is located The receiving end 21 and the socket end 22 are adjacent to each other, and the first matching section 232 has a circular cross section along the radial direction of the through hole 23, and the first tight fitting section The maximum width of the 232 in the radial direction of the through hole 23 is smaller than the maximum width of the first fitting section 231 along the radial direction of the through hole 23.

The through hole 23 further includes a receiving portion 233 and a receiving portion 234. The receiving portion 233 and the first tight matching portion 232 are adjacent to each other and the first tight matching portion 232 is different from the first joint. One side of the receiving portion 231, the maximum width of the receiving portion 233 along the radial direction of the through hole 23 is greater than the maximum width of the first tight matching portion 232 along the radial direction of the through hole 23, and the receiving portion 234 is adjacent to the receiving end 21 The receiving section 234 has a square cross section along the radial direction of the through hole 23 and can be sleeved with the driving head of the pneumatic tool or the electric tool.

The driving member 30 is coupled to the receiving member 20, and the driving member 30 includes a connecting end 31 and a driving end 32 different from the connecting end 31. The connecting end 31 of the driving member 30 is covered by the receiving member 20. The connecting end 22 is inserted into the through hole 23, and the driving end 32 of the driving member 30 protrudes from the through end 22 of the receiving member 20, and the driving member 30 is connected to the connecting end 31. A second tight-fitting section 33, a second mating section 34 and a driving section 35 are disposed between the driving ends 32. The second mating section 33 is adjacent to the connecting end 31, and the second mating section 33 corresponds to the connecting end 31. The first tight-fitting section 232 abuts against the inner wall surface of the first tight-fitting section 232, and the cross-sectional shape of the second tight-fitting section 33 along the radial direction of the driving member 30 is along the first tight-fitting section 232. The holes 23 have the same radial cross section and are circular.

The second mating segment 34 is located between the second mating segment 33 and the driving segment 35 and adjacent to the second mating segment 33. The second mating segment 34 corresponds to the first mating segment 231 is capable of abutting against the inner wall surface of the first fitting section 231. The second fitting section 34 has a regular hexagonal cross section along the radial direction of the driving member 30. The driving section 35 is set as a screwdriver in this embodiment. head.

The driving member 30 has a slot 36 recessed at the connecting end 31. The slot 36 and the recess 37 extend from the connecting end 31 toward the driving end 32. The slot 36 is in the slot 36. In this embodiment, the groove is formed in a hole, and the groove 37 is disposed between the slot 36 and the outer peripheral edge of the second tight portion 33, and the groove 37 communicates with the slot 36 and the second The outer circumferential edge of the tight fitting portion 33 is two in the present embodiment. The two concave grooves 37 are respectively disposed on the radially opposite sides of the slot 36.

One end of the pressing member 40 is provided with an expanding portion 41 and has a retaining portion 42 adjacent to the expanding portion 41. The expanding portion 41 is externally threaded in this embodiment, and the expanding portion 41 is screwed. Disposed in the slot 36 and abutting against the inner wall surface of the slot 36 in the radial direction, the expanding portion 41 presses the second tight fitting portion 33 to expand to make the second tight fitting portion 33 and the first tight portion The retaining portion 232 forms a tight fit, and the retaining portion 42 protrudes out of the slot 36. The width of the retaining portion 42 in the radial direction is greater than the minimum width of the first tight portion 232 along the radial direction of the through hole 23 and Less than the maximum width of the accommodating section 233 along the radial direction of the through hole 23 is received in the accommodating section 233.

Because the tool head 10 adopts a circular cross section, the first tight fitting section 232 is tightly coupled with the second tight fitting section 33, and between the first tight fitting section 232 and the second tight fitting section 33. The tight fitting relationship can be achieved by the pressing of the pressing member 40, so that the receiving member 20 and the driving member 30 are not arbitrarily separated after being combined with the pressing member 40, and the assembly is easy and the structural strength is high.

At the same time, the first tight fitting section 232 and the second tight fitting section 33 can withstand the torque by the tight coupling between the first tight fitting section 232 and the second tight fitting section 33. The crack of the second fitting section 34 can be avoided, and the service life of the tool head 10 can be improved.

As far as the above is concerned, it can be concluded that the present invention has the following advantages:

1. The tool head of the present invention, wherein the tool head comprises a receiving member, a driving member and a pressing member, the receiving member comprising a receiving end and a socket end different from the receiving end, the receiving member is A through hole is defined between the receiving end and the socket end, and the through hole communicates with the receiving end and the socket end through the receiving member, the through hole includes a first matching section and a first tight a first matching portion is located between the receiving end and the socket end, the driving member is coupled to the receiving member, and the driving member comprises a connecting end And a driving end different from the connecting end, the driving member is inserted into the through hole and the driving end of the driving member protrudes from the through end of the receiving member, the driving member is connected to the connecting hole Between the end and the driving end, a second tight fitting section, a second fitting section and a driving section are disposed, the second tight fitting section is adjacent to the connecting end, and the second tight fitting section corresponds to the first tight fitting And abutting against an inner wall surface of the first tight fitting section, the second mating section being located at the second Between the distribution section and the driving section, the second fitting section corresponds to the first fitting section and can abut against the inner wall surface of the first fitting section, and the driving member is concavely inserted at the connecting end The slot is at least one groove, and the slot and the groove extend from the connecting end to the driving end, and the groove is disposed between the slot and the outer peripheral edge of the second tight fitting portion, and the groove The groove communicates with the outer peripheral edge of the second tight fitting portion in the radial direction, and one end of the pressing member is provided with an expanding portion disposed in the slot and abutting against the slot To the inner wall surface, the expansion portion presses the second tight fitting portion to expand to form a tight fit between the second tight fitting portion and the first tight fitting portion, because the first tight fitting portion of the tool head and the first The two tight fitting sections adopt a pressing engagement, and the tight fitting relationship between the first tight fitting section and the second tight fitting section can be achieved by pressing the pressing member, so that the receiving member, the driving member and the fastening member The pressing members are not arbitrarily separated after being combined, and are easy to assemble and have high structural strength.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so that the numerical value is changed or the equivalent element is replaced, or the equivalent of the scope of the patent application of the present invention. Changes and modifications are still within the scope of the invention patent.

10‧‧‧Tool head
20‧‧‧Receiving parts
21‧‧‧ Receiving end
22‧‧‧ socket
23‧‧‧through hole
231‧‧‧First matching section
232‧‧‧First tight match
233‧‧‧ Included section
234‧‧‧Segment
30‧‧‧ Drives
31‧‧‧Connected end
32‧‧‧Driver
33‧‧‧Second tight section
34‧‧‧Second joint segment
35‧‧‧Drive segment
36‧‧‧Slots
37‧‧‧ Groove
40‧‧‧forced parts
41‧‧‧Expansion Department
42‧‧‧Protection

Figure 1 is a perspective view of the first embodiment of the tool head of the present invention. Figure 2 is a perspective exploded view of the first embodiment of the tool head of the present invention. Figure 3 is a cross-sectional structural view of the tool head of the present invention taken along line 3-3 of Figure 1. Figure 4 is a cross-sectional structural view of the tool head of the present invention taken along line 4-4 of Figure 1. Figure 5 is a cross-sectional structural view of the tool head of the present invention taken along line 5-5 of Figure 4;

10‧‧‧Tool head

20‧‧‧Receiving parts

21‧‧‧ Receiving end

22‧‧‧ socket

231‧‧‧First matching section

232‧‧‧First tight match

233‧‧‧ Included section

234‧‧‧Segment

30‧‧‧ Drives

31‧‧‧Connected end

32‧‧‧Driver

33‧‧‧Second tight section

34‧‧‧Second joint segment

35‧‧‧Drive segment

40‧‧‧forced parts

41‧‧‧Expansion Department

42‧‧‧Protection

Claims (10)

A tool head includes: a receiving member, the receiving member includes a receiving end and a socket end different from the receiving end, the receiving member is provided with a through hole between the receiving end and the socket end a through hole that communicates with the receiving end and the socket end, the through hole includes a first matching portion and a first tight matching portion, the first matching portion is adjacent to the socket end The first tight fitting section is located between the receiving end and the socket end; a driving component is coupled to the receiving component, the driving component comprises a connecting end and a driving end different from the connecting end The driving member is inserted into the through hole, and the driving end of the driving member protrudes from the through end of the receiving member, and the driving member is disposed between the connecting end and the driving end. a second tight fitting section, a second fitting section and a driving section, the second fitting section is adjacent to the connecting end, the second fitting section corresponding to the first fitting section and abutting against the first tightness An inner wall surface of the matching portion, the second matching portion is located between the second tight matching portion and the driving portion The second matching portion corresponds to the first matching portion and can abut against the inner wall surface of the first matching portion, and the driving member is recessed with a slot at least one groove at the connecting end, the slot and The groove extends from the connecting end to the driving end, the groove is disposed between the slot and the outer peripheral edge of the second tight fitting portion, and the groove communicates with the slot and the second a radially outer peripheral edge of the tight fitting portion; a pressing member, one end of the pressing member is provided with an expanding portion disposed in the slot and abutting against a radially inner wall surface of the slot, The expansion portion presses the second tight fitting section to expand to form a tight fit of the second tight fitting section with the first tight fitting section. The tool head according to claim 1, wherein the connecting end of the driving member is inserted into the through hole by the socket end of the receiving member, and the driving end of the driving member is protruded from the socket end of the receiving member. The maximum width of the first tight-fitting section along the radial direction of the through-hole is smaller than the maximum width of the first mating section along the radial direction of the through-hole. The tool head according to claim 2, wherein the pressing member has a retaining portion adjacent to the expanding portion, and the retaining portion protrudes outside the slot, and the retaining portion has a width greater than a radial direction The first tight fitting section has a minimum width along the radial direction of the through hole. The tool head of claim 3, wherein the through hole has a receiving section, the receiving section and the first fitting section are adjacent to each other and the first fitting section is different from the first matching a side of the segment, a maximum width of the receiving portion along a radial direction of the through hole is greater than a maximum width of the first tight portion along a radial direction of the through hole, and a width of the retaining portion in a radial direction is smaller than a width of the receiving portion The maximum width of the hole is radially accommodated in the receiving section. The tool head according to any one of claims 1 to 4, wherein the slot is in the shape of a screw hole, the expansion portion is an external thread, and the expansion portion is screwed in the slot. The tool head according to any one of claims 1 to 4, wherein the first fitting segment and the first fitting segment are adjacent to each other, the second fitting segment and the second fitting segment are adjacent to each other . The tool head according to any one of claims 1 to 4, wherein a cross-sectional shape of the second tight-fitting section along a radial direction of the driving member is the same as a cross-section of the first tight-fitting section along a radial direction of the through-hole. The tool head according to claim 7, wherein a cross section of the first mating section along a radial direction of the through hole is a regular hexagon, and a cross section of the first mating section along a radial direction of the through hole is circular. The section has a circular shape in a radial direction along the driving member, and the second fitting section has a regular hexagon in a radial direction along the driving member. The tool head according to any one of claims 1 to 4, wherein the number of the at least one groove is two, and the two grooves are respectively disposed on the radially opposite sides of the slot. The tool head according to any one of claims 1 to 4, wherein the through hole has a receiving section adjacent to the receiving end, the receiving section is square in a radial direction along the through hole and can be sleeved pneumatically The drive head of the tool or power tool, the drive segment is set to the starter head.