TWM551964U - Handheld power tool - Google Patents

Description

Hand-held power tool

This creation is about a power tool, especially a hand-held power tool.

As shown in the figures 9 to 10, the conventional hand-held power tool, taking a pneumatic cutter as an example, has a driving unit 92 in the body 91. The driving unit 92 includes a pneumatic motor 921, a gas valve 922, and a pressing handle 923, and has a transmission shaft. 93 is coupled to the air motor 921, and one end of the drive shaft 93 is provided with a cutting piece 94. The driving unit 92 drives the cutting piece 94 to rotate, thereby cutting the object.

As shown in the figures 11 to 12, the joint 95 axially connected to the cutting piece 94 has a ball seat 951, and the connecting seat 96 of the body 91 has a ball groove 961, and the ball seat 951 is placed in the ball groove 961, and The swing joint 95 is positioned rearward to adjust the angle of the cutting blade 94. As shown in Fig. 12, the joint 95 can be pivoted in that the connecting seat 96 is locked by the elastic piece 962 and the pressing bead 963 is pressed against the inclined surface 952 of the ball seat 951, and when the sliding sleeve 97 is displaced to the left side in the figure, When the position is released, the ball 963 can be disengaged from the blocking of the ring wall 971; when the sliding sleeve 97 is displaced to the right side in the figure, the locking position is blocked, and the ball 963 is blocked by the ring wall 971 and cannot be opened. The joint 95 can be tightened in the ball slot 961 without moving.

However, since the height of the raised wall 971 in the sliding sleeve 97 is fixed, and the ball 963 and the joint 95 are inelastic, the ring 971 can accurately block the ball 963, the joint 95, and the ball stop when the locking position is in the locked position. The 963 and the sliding sleeve 97, in particular the bevel 952 of the ball seat 951 and the ring wall 971 of the sliding sleeve 97, must be of a very precise size. However, the connecting seat 96 is a locking elastic piece 962, and the inclined surface 964 must be machined and drilled and tapped, which is difficult to process in actual operation; after the processing of the inclined surface 952 is completed, the spherical seat 951 is spherical and difficult to fix, resulting in measuring the inclined surface 952. Difficulties. Therefore, the size of the joint 95, the ball 963, the connecting seat 96, and the sliding sleeve 97 has a problem that it is difficult to achieve precise requirements. Therefore, in practice, there is a gap between the ring wall 971 and the retaining ball 963, which cannot be tightened, resulting in work. The cut piece 94 has a problem of shaking during work.

The main purpose of the present invention is to solve the above problems and provide a hand-held power tool. By means of the arrangement of the collar, it is ensured that the ball seat can be fastened by the ball in the ball groove of the connecting seat, so that the working piece is stable during operation. Does not shake the effect.

For the purposes of the foregoing, this creative department includes:

a body, a driving unit is disposed therein, and has a working end, the driving unit has a driving shaft extending toward the working end, the driving shaft is flexible and bendable;

a connecting seat, disposed at the working end of the body, having an axially recessed ball slot, and having at least a plurality of perforations on opposite sides, the plurality of through holes extending radially and communicating with the ball slot;

a joint, a ball seat is pivotally pivoted to the connecting seat on opposite sides of the ball slot, and the outer periphery of the ball seat has a plurality of inclined faces disposed in front and rear along the axial direction, and any inclined surface can accompany the ball The seat pivots and faces the perforations;

a bundle ring is sleeved on the outer circumference of the connecting seat, the bundle ring is disconnected and a gap is formed at both ends, and the two ends respectively have a bump;

An adjusting member has a shaft portion passing through the two protrusions, and a driving portion is coupled to one end of the shaft portion to pull the two protrusions relatively close to abut or away to control the size of the gap and tighten or loose Opening the bundle ring, the bundle ring is provided with a reed to cover the plurality of perforations;

a plurality of retaining beads are respectively disposed in each of the perforations, and are blocked by the bundling ring and fall on the inclined surface of the perforated direction. When the bundling ring is tightened, the reed is provided by the bundling ring to the plurality of retaining beads Radially pressing on the slope of the ball to fix the ball seat in the ball groove;

An end cover is disposed at an end of the connecting seat where the joint protrudes;

A work piece is rotatably coupled to the joint, and the drive shaft passes through the joint and the joint to driveably connect the work piece.

Wherein, the adjusting member is a quick release, the driving portion is an eccentric handle, the shaft portion is screwed on the driving portion, and the shaft portion has a blocking portion at an end different from the driving portion, The rotation of the shaft portion adjusts the distance between the blocking portion and the driving portion, and the driving portion is pulled to quickly pull the two protrusions relatively close to abut or away.

Wherein, the reed is annular and disconnected at one end to form a gap at both ends, one end of the reed has an inwardly curved convex portion; the connecting seat is outside the collar There is a recess provided in the collar and extending into the recess with the stop to limit rotation of the reed relative to the connector.

Wherein, the inner circumference of the bundle ring has a first annular wall, a first annular groove for receiving the reed is formed on one side of the first annular wall, and a other side is formed on the other side of the first annular wall a second ring groove into which the end cap is placed.

The outer circumference of the end cover has a second annular wall, and the second annular wall forms a barrier to the bundle ring with the end cover disposed at one end of the connecting seat.

The above and other objects and advantages of the present invention will become more apparent from the detailed description and the accompanying drawings.

Of course, the present invention is allowed to differ in some of the parts, or the arrangement of the parts, but the selected embodiments are described in detail in the present specification, and the construction thereof is shown in the drawings.

Please refer to FIG. 1 to FIG. 8 , which are the embodiments and preferred embodiments selected for the present invention, which are for illustrative purposes only and are not limited by the embodiments described herein.

The present invention provides a hand-held power tool, which is a pneumatic cutter as a preferred embodiment, as shown in Figures 1 to 3, including a body 1, a connector 2, a connector 3, a bundle 4, and a The adjusting member 5, the plurality of beads 6, the end cover 7 and a working member 8, wherein:

As shown in Figures 2 to 3, the body 1 is internally provided with a driving unit 11 and has a working end 12. The driving unit 11 has a transmission shaft 111. The transmission shaft 111 extends to the working end 12, and the transmission shaft 111 has flexibility. Bendable. The driving unit 11 of the embodiment, in addition to the transmission shaft 111, includes a pneumatic motor 112, a gas valve 113, and a pressing handle 114. The gas valve 113 can be opened by the pressing handle 114 to open the high-pressure gas to drive the air motor 112 to rotate. The drive shaft 111 is driven to rotate. In different embodiments, the driving unit 11 may be an electric motor or an electric driver in addition to the air motor 112 being a high-pressure gas driver.

As shown in Figures 2 to 3, the connector 2 is disposed at the working end 12 of the body 1, the connector 2 has an axially recessed ball slot 21, and has at least a plurality of perforations 22 on opposite sides, a plurality of perforations 22 is opened radially and communicates with the ball groove 21. In the present embodiment, the connector 2 has only two through holes 22, and one is shown above and the other is below as shown.

As shown in the second to third figures, the joint 3 has a ball seat 31. The ball seat 31 is placed in the ball groove 21, and the ball seat 31 is pivotally connected to the connecting seat 2 on opposite sides thereof, so the ball seat 31 can be pivoted. The pendulum, and the outer periphery of the ball seat 31 has a plurality of inclined faces 32 disposed in the axial direction, and any of the inclined faces 32 can be pivoted with the ball seat 31 to face the perforations 22. In the present embodiment, the ball seat 31 has two ring grooves 33, 34 arranged one after the other, each of the ring grooves 33, 34 has a pair of inclined faces 32, and the ball seat 31 has a slope at the end in the ball groove 21. 32.

As shown in the second to third figures, the bundle ring 4 is sleeved on the outer circumference of the joint 2, the bundle ring 4 is disconnected at one end, and a gap 41 is formed at both ends, and a projection 42 and 43 are respectively formed at both ends. The adjusting member 5 has a shaft portion 51 passing through the two protrusions 42 and 43 and a driving portion 52 connecting one end of the shaft portion 51 to pull the two protrusions 42 and 43 so that the two protrusions 42 and 43 are relatively close to each other or Further, by controlling the size of the gap 41, when the gap 41 becomes small, the bundle ring 4 is in a tightened state, and when the gap 41 is restored and becomes large, the bundle ring 4 is in a released state. The collar 4 is provided with a reed 44 which is placed over the plurality of perforations 22. 44

In the embodiment, the adjusting member 5 is a quick release, and the driving portion 52 is an eccentric handle. The shaft portion 51 is screwed to the driving portion 52. The shaft portion 51 has a different end from the driving portion 52. The blocking portion 53 adjusts the distance between the blocking portion 53 and the driving portion 52 by the rotation of the shaft portion 51, and adjusts the distance of relative displacement between the projections 42 and 43 of the collar 4 to determine that the gap 41 can be opened. The degree of opening, and the driving portion 52 is pulled to quickly pull the two bumps 42, 43 relatively close to abut or away.

As shown in Figs. 2 to 3, a plurality of beads 6 are respectively disposed in the respective perforations 22, and are blocked by the bundle ring 4 to fall on the inclined faces 32 on which the perforations 22 face. When the collar 4 is tightened, the reed 44 provided by the collar 4 radially presses the plurality of beads 6 against the inclined surface 32 to fix the ball seat 31 in the ball groove 21.

As shown in Figures 2 to 3, the end cap 7 is provided at the end of the joint 2 where the joint 3 projects. In the present embodiment, the inner circumference of the bundle ring 4 has a first annular wall 45, and a first annular groove 46 is formed on one side of the first annular wall 45 for receiving the reed 44, and at the first annular wall 45. The other side forms a second ring groove 47 for the end cover 7 to be placed. The end cover 7 of the present embodiment has a second annular wall 71 on the outer circumference thereof, and the second annular wall 71 is disposed at one end of the connecting base 2 with the end cover 7, so that the second annular wall 71 forms a barrier to the bundle ring 4.

As shown in Fig. 3, the workpiece 8 is rotatably coupled to the joint 3, and the drive shaft 111 passes through the joint 2 and the joint 3 to driveably connect the work piece 8. In the embodiment, the working piece 8 is a cutting piece, and the connecting shaft 111 is flexible, and can be pivoted when the ball seat 31 of the joint 3 pivots in the ball groove 21 of the connecting seat 2 to swing relative to each other. Adjust the cutting angle of the work piece 8.

As shown in Figures 2 to 3, the reed 44 of the present embodiment is annular and is broken at one end to form a gap 441 at both ends, and the reed 44 has an inward bend at one end of the both ends. a protruding portion 442. In the present embodiment, the connecting seat 2 has a recess 23 on the outer circumference of the sleeve ring 4, and the spring 44 is disposed in the collar 4 and extends into the recess 23 with the blocking portion 442 to restrict the reeds 44 from being oppositely connected. Seat 2 rotates.

As shown in FIG. 4, for example, if the angle of the joint 3 is adjusted to be upward or downward, the driving portion 52 can be first opened to make the gap 41 large, and the collar 4 is released, and the joint can be connected. Swing up or down, in the present embodiment, the upper swing is 25 degrees. As shown in the fifth to sixth figures, in the middle of the swing of the joint 3, the retaining bead 6 is pushed open by the ball seat 31. At this time, since the bundle ring 4 and the reed 44 provided have a broken structure, The ball 6 can be extended to conform to the ball 6 so that the ball 6 can be spanned from one slope 32 to the other. Further, as shown in FIGS. 7 to 8, after the swing position of the joint 3 is determined, since the two projections 42 and 43 have the shaft portion 51, the two portions of the two projections 42 and 43 respectively have the driving portion 52 and When the stopper 53 is rotated by the shaft portion 51 and adjusted to an appropriate position, the blocking portion 53 can be moved by the driving portion 52 of the eccentric handle to move the stopper 53 toward the driving portion 52. When the two bumps 42 and 43 are brought closer to each other, the gaps 41 can be quickly narrowed and the bundle ring 4 can be tightened. At this time, the beads 6 of the perforations 22 located on opposite sides are tightly tightened. The pressing of the reed 44 and the radial pressing on the inclined surface 32 allow the ball seat 31 to be fixed in the ball groove 21 of the connecting seat 2 by the ball 6 to fix the joint 3 to the upper swing or the hem.

From the above description, it is not difficult to find that the present invention has the advantage that the bundle ring 4 is tightened on the connecting base 2 by the action of the adjusting member 5 by the arrangement of the binding ring 4 on the connecting base 2, and the reed 44 is passed through the reed 44. The bead 6 is radially pressed against the slope 32 where it is located. At this time, since the collar 4 can control the size of the gap 41, even if the size of the bevel 32, the collar 4, and the ball 6 of the joint 3 is low, The adjustment member 5 can control the degree to which the bundle ring 4 is tightened on the connecting seat 2, and is surely tightened on the retaining bead 6 through the reed 44, and maintains the force of the reed 44 to press radially on the retaining bead 6. In order to ensure that the ball seat 31 can be fastened in the ball groove 21 of the connecting seat 2 by the ball retaining ball 6, the problem that the working piece 8 is shaken with the joint 3 during operation can be avoided, and the work piece 8 can be stabilized without shaking during operation. .

The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the aforementioned objectives, and has been in compliance with the provisions of the Patent Law, and has filed a patent application.

(customized part)
91‧‧‧Ontology
92‧‧‧ drive unit
921‧‧‧Air motor
922‧‧‧ gas valve
923‧‧‧pressure handle
93‧‧‧Drive shaft
94‧‧‧Cut slices
95‧‧‧Connectors
951‧‧‧ tee
952‧‧‧Bevel
96‧‧‧Connecting seat
961‧‧‧ ball slot
962‧‧‧Shrap
963‧‧‧Blocks
964‧‧‧Bevel
97‧‧‧Sleeve
971‧‧‧ Ring Wall (this part of the creation)
1‧‧‧ Ontology
11‧‧‧Drive unit
111‧‧‧ drive shaft
112‧‧‧Air motor
113‧‧‧ gas valve
114‧‧‧pressure handle
12‧‧‧Working end
2‧‧‧Connecting seat
21‧‧‧ ball slot
22‧‧‧Perforation
23‧‧‧ recess
3‧‧‧Connectors
31‧‧‧ tee
32‧‧‧Bevel
33‧‧‧Circle
34‧‧‧Circle
4‧‧‧Bundle
41‧‧‧ gap
42‧‧‧Bumps
43‧‧‧Bumps
44‧‧‧Reed
441‧‧‧ gap
442‧‧ ‧ blocking
45‧‧‧First ring wall
46‧‧‧First ring groove
47‧‧‧second ring groove
5‧‧‧Adjustment
51‧‧‧Axis
52‧‧‧ Drive Department
53‧‧ ‧ blocking
6‧‧‧Blocks
7‧‧‧End cover
71‧‧‧ second ring wall
8‧‧‧Workpieces

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded configuration diagram of a preferred embodiment of the present invention. Figure 3 is a cross-sectional structural view of a preferred embodiment of the present invention, taken along the axial direction. Figure 4 is another cross-sectional structural view of the preferred embodiment of the present invention, which is cut in the radial direction. Fig. 5 is a cross-sectional view showing the joint of the third figure before the positioning of the joint to the front of the joint. In the figure, the retaining ball is in a state of being separated from the inclined surface by the spherical seat, and the bundle ring and the reed are both opened. Figure 6 is a cross-sectional view of the joint of the fourth figure before the positioning of the joint to the front of the joint. In the figure, the retaining bead is separated from the inclined surface by the spherical seat. Corresponding to Fig. 5, the bundle ring and the reed are both visible. Open it up. Fig. 7 is a schematic cross-sectional view showing the joint of Fig. 5 when it is placed upside down to the position of the connecting seat. In the figure, the retaining beads fall on the inclined surface, and the bundle ring and the reed are tightened. Fig. 8 is a schematic cross-sectional view showing the joint of the sixth figure when the joint is placed upside down to the position of the joint. In the figure, the retaining beads are again placed on the inclined surface, and the bundle ring and the reed are both tightened corresponding to Fig. 7. Figure 9 is a perspective view of a conventional pneumatic cutter. Figure 10 is an exploded configuration diagram of a conventional pneumatic cutter. Figure 11 is a cross-sectional structural view of a conventional pneumatic cutter. Fig. 12 is a cross-sectional view showing the joint of the eleventh figure with respect to the upper side of the joint.

1‧‧‧ Ontology

11‧‧‧Drive unit

111‧‧‧ drive shaft

114‧‧‧pressure handle

12‧‧‧Working end

2‧‧‧Connecting seat

21‧‧‧ ball slot

22‧‧‧Perforation

23‧‧‧ recess

3‧‧‧Connectors

31‧‧‧ tee

32‧‧‧Bevel

33‧‧‧Circle

34‧‧‧Circle

4‧‧‧Bundle

41‧‧‧ gap

42‧‧‧Bumps

43‧‧‧Bumps

44‧‧‧Reed

441‧‧‧ gap

442‧‧ ‧ blocking

45‧‧‧First ring wall

46‧‧‧First ring groove

47‧‧‧second ring groove

5‧‧‧Adjustment

51‧‧‧Axis

52‧‧‧ Drive Department

53‧‧ ‧ blocking

6‧‧‧Blocks

7‧‧‧End cover

71‧‧‧ second ring wall

8‧‧‧Workpieces

Claims (6)

A hand-held power tool includes: a body having a driving unit internally and having a working end, the driving unit having a drive shaft extending toward the working end, the drive shaft being flexible and bendable; a connecting seat, The utility model is disposed at the working end of the body, and has an axially concave spherical groove, and has a plurality of perforations at least on opposite sides, the plurality of perforations are radially opened and communicate with the ball slot; a joint has a ball seat thereon The ball slot is pivotally pivoted to the connecting seat by opposite sides, and the outer periphery of the ball seat has a plurality of inclined faces disposed in front and rear along the axial direction, and any inclined surface can be pivoted with the ball seat to face the perforation; a bundle ring is sleeved on the outer circumference of the connecting seat, the bundle ring has a break and a gap is formed at both ends, and the two ends respectively have a protrusion; an adjusting member has a shaft portion passing through the two bumps, and a driving portion is coupled to the one end of the shaft portion to pull the two protrusions relatively close to abut or away to control the size of the gap to tighten or loosen the beam ring, and the beam ring is provided with a reed to cover the a plurality of beads, each of which is disposed in each of the perforations, and is blocked by the bundle ring and falls on the inclined surface of the perforation, and when the bundle is tightened, the reed pair of the bundle The plurality of beads are radially pressed against the slope of the ball to fix the ball seat in the ball slot; the one end cover is disposed at the end of the connecting seat with the joint protruding; a working piece is rotatably connected thereto a joint through which the drive shaft is movably coupled to the work piece. The hand-held power tool according to claim 1, wherein the adjusting member is a quick release, the driving portion is an eccentric handle, the shaft portion is screwed to the driving portion, and the shaft portion is different. One end of the driving portion has a stop portion, and the distance between the blocking portion and the driving portion can be adjusted by the rotation of the shaft portion, and the driving portion is pulled to quickly pull the two protrusions relatively close to each other or keep away. The hand-held power tool according to claim 1, wherein the reed is annular and is disconnected to form a gap at both ends, and one end of the reed has an inwardly curved convex portion; The connecting seat has a recess on the outer circumference of the collar, and the spring is disposed in the collar and protrudes into the recess by the stopper to restrict the reed from rotating relative to the connecting seat. The hand-held power tool of claim 3, wherein the inner circumference of the collar has a first ring wall, and a first ring groove for receiving the reed is formed on one side of the first ring wall, and The other side of the first ring wall forms a second ring groove into which the end cap is placed. The hand-held power tool of claim 4, wherein the outer periphery of the end cap has a second annular wall, and the second annular wall forms a barrier to the bundle ring with the end cover disposed at one end of the connecting seat. The hand-held power tool according to claim 1, wherein the ball seat has two ring grooves arranged one after the other, each of the ring grooves has a pair of the aforementioned inclined faces, and the ball seat is at the end of the ball groove. There is also a slope as described above.