TW202128363A - Hand-held power tool - Google Patents

Abstract

A hand-held power tool includes a front mechanism, a driving device, a connecting component and a fixing element. The front mechanism has an assembly department. The driving device includes a driving body, a driving shaft and a cover and the cover surrounding the driving shaft is disposed thereon. The cover has a first fixing portion. The connecting component include a connecting ring and a fixed ring extended by the connecting ring. The connecting ring is connected to the assembly department. The fixed ring has a second fixing portion. The second fixed portion and the first fixed portion together form a fixed part group. The fixing element can be unloaded to connect the fixed part group. Thereby, the driving device can be detached after removing the fixing element and it is therefore easy to detach and maintain the driving device.

Description

Hand-held power tools

The present invention claims priority based on the patent application No. 109101993 filed in the Republic of China on January 20, 109, and uses its content here.

The invention relates to a hand-held power tool, in particular to a hand-held power tool with the function of convenient disassembly and assembly of a driving device.

Regarding hand-held power tools (such as pneumatic tools or electric tools, etc.), they include a front mechanism, a rear mechanism, a driving element located between the front and rear mechanisms, and a housing. Wherein, one end surface of the driving element protrudes with a driving shaft; the front section mechanism includes an actuator, an adjusting screw sleeve and a gear ring.

According to the technology of US Invention Patent Publication No. US8925646, the existing system fixes the end surface of the driving element in the tail end of the front-stage mechanism, resulting in that the fixing elements used to fix the driving element are all concealed by the front-stage mechanism. Therefore, when repairing the drive components, the user must remove the housing first, but also slowly remove the actuators, adjusting screw sleeves and gear ring of the front mechanism one by one, so that the fixed components can be seen and removed, which is obviously troublesome. And inconvenient, it has been criticized for a long time.

The purpose of the present invention is to provide a hand-held power tool with the function of facilitating disassembly and assembly of the driving device.

In order to achieve the above object, the present invention provides a hand-held power tool, including a front mechanism, a driving device, an engagement member, and a fixing element. The front mechanism includes an assembling part, and the driving device includes a driving body. A drive shaft extending from the main body and a cover body sleeved around the drive shaft, the cover body is provided with a first fixing portion; the connecting member includes an assembly ring and a fixing ring extending from the assembly ring, And the assembly ring is assembled to the assembly part of the front mechanism, the fixing ring is provided with a second fixing part arranged corresponding to the first fixing part, the second fixing part and the first fixing part together form a The fixing part group; the fixing element can be assembled and detachably connected to the fixing part group; wherein, after the fixing element is detached from the fixing part group, the driving device can be detached from the connecting member.

Compared with the prior art, the present invention has the following effects: the drive device can be removed only by radially removing the fixing element, so it has the effect of facilitating the disassembly and maintenance of the drive device, and of course it also has the effect of facilitating the disassembly and maintenance of the front-end mechanism .

The detailed description and technical content of the present invention are described as follows in conjunction with the drawings. However, the drawings are only provided for reference and description, and are not intended to limit the present invention.

The present invention provides a hand-held power tool (such as a pneumatic tool or an electric tool, etc.) for driving the actuator 11 shown in FIG. 1 to act. Figures 1 to 6 are the first embodiment of the present invention, Figure 7 is the second embodiment of the present invention, Figures 8 to 9 are the third embodiment of the present invention, and Figures 10 to 15 are the first embodiment of the present invention. Four examples.

As shown in Figures 1 to 6, the hand-held power tool of the first embodiment of the present invention includes: a front section mechanism 1, a driving device 2, an engagement member 3, a fixing element 4a, and a rear section mechanism 5. Includes a shell 6. The front section mechanism 1 and the rear section mechanism 5 are respectively located at the front section and the rear section of the hand-held power tool. As for the driving device 2, the connecting member 3 and the fixing element 4 are all arranged between the front section 1 and the rear section mechanism 5 and are located in the hand-held power tool. Mid-section.

The driving device 2 includes a driving body 21 and a cover 22. The driving body 21 can be various objects capable of generating power. In this embodiment, a motor is taken as an example for description. Therefore, it has a driving shaft 211 protruding from one end surface 212 of the driving body 21. Moreover, the driving device 2 defines an axial direction D1 along the length direction of the driving shaft 211, and the driving device 2 also defines a radial direction D2 perpendicular to the axial direction D1.

The center of the cover 22 is provided with a shaft hole 220, and is fixed to the end surface 212 of the drive body 21 facing the connecting member 3 along the axial direction D1, so that the drive shaft 211 extends from the shaft hole 220 and transmits power to the front section mechanism 1. In this embodiment, a screw lock is taken as an example, and the cover 22 is locked to the end surface 212 (the screw lock is performed by the screw 224 shown in FIG. 4). In addition, the cover body 22 also has at least one first fixing portion 221 surrounded by the corresponding drive shaft 211. In this embodiment, two first fixing portions 221 are used as an example for description; the present invention does not limit the first fixing portion 221 The fixing method is described in this embodiment by taking screw connection as an example. Therefore, each of the first fixing portions 221 respectively defines a positioning hole 2211 along the radial direction D2.

The front-stage mechanism 1 includes an actuator 11, an adjusting screw sleeve 12 and an assembling part 13 which are connected to each other in the axial direction D1. The assembling part 13 of this embodiment is a toothed ring. It is also possible to form a thread on the adjusting screw sleeve 12 to be integrated into an assembling part 13.

The connecting member 3 includes an assembling ring 31 and a fixing ring 32 extending from the assembling ring 31. The assembling ring 31 can be any ring body that can be assembled to the front mechanism 1. In this embodiment, the assembling ring 31 is provided with a corresponding assembling part 13, and the assembling ring 31 is the aforementioned assembling part 13 of the corresponding assembling part 13 assembled to the front part of the mechanism 1. . In detail, the assembly ring 31 and the fixed ring 32 are coaxially connected to each other.

One end of the fixed ring 32 is formed with a cavity 320 along the axial direction D1, and the fixed ring 32 also has a second fixed portion 321 surrounded by the corresponding drive shaft 211. In this embodiment, two second fixed portions 321 are taken as an example Be explained. In this embodiment, each second fixing portion 321 defines a screw hole 3211 along the radial direction D2.

The cover 22 of the driving device 2 is received in the cavity 320 along the axial direction D1, so that the second fixing portions 321 and the first fixing portions 221 are opposite to each other in the radial direction D2 to form a fixing portion group C, and The second screw holes 3211 and the first screw holes 2211 are respectively opposite and communicated with each other in the radial direction D2. In other embodiments not shown in the drawings, the cavity can also be recessed on one side of the cover body 22 to accommodate the fixing ring 32 in the cavity of the cover body 22, and this is only a structural concave-convex configuration In the alternative, this embodiment only discloses that a cavity 320 is formed in the fixing ring 32 to accommodate the cover 22.

The fixing element 4a can be various elements that can fix the first fixing portion 221 and the second fixing portion 321. In this embodiment, a screw is taken as an example for description. Preferably, it can be a set screw as shown in the figure. . When fixed, as shown in FIGS. 2 and 6, each fixing element 4a is detachably screwed and fixed to each fixing part group C (as shown in FIG. 3) along the radial direction D2, so that the driving device 2 can move along The axial direction D1 is fixed to the connecting member 3. It must be noted that each fixing element 4a is exposed from the connecting member 3 through the screw hole 3211 of each second fixing portion 321, respectively.

The shell 6 is a detachable plastic shell, and the shell 6 surrounds the connecting member 3, the driving device 2 and the rear mechanism 5. The present invention does not limit the fixing method of the housing 6. In this embodiment, the housing 6 is assembled and detachably assembled to the connecting member 3 with screws.

Thereby, the user can see the connecting member 3 and the fixing elements 4a exposed from the connecting member 3 as long as the housing 6 is removed; then, the user only needs to remove the fixing elements 4a to remove the driving device 2 from When the connecting member 3 is removed, there is no need to remove the actuator 11, adjusting screw sleeve 12, and assembly 13 of the front mechanism 1, and the connecting member 3 does not need to be removed. Therefore, it has the effect of convenient disassembly and assembly and easy maintenance. Of course, it is also convenient. The effect of disassembling and repairing the front mechanism 1.

As shown in FIGS. 3 to 5, the cover body 22 has an inner side surface 222 covering the aforementioned end surface 212 and a peripheral wall surface 223 on the outer periphery of the cover body 22. The inner surface 222 is embossed with the aforementioned first fixing portions 221, and the cover body 22 is provided with positioning holes 2211 from the peripheral wall surface 223 corresponding to the first fixing portions 221.

As shown in FIG. 5, in addition to the inner top wall (not marked with component symbols) of the fixing ring 32, each second fixing portion 321 in the shape of a lug can be protruding along the axial direction D1, and each second fixing portion 321 can be opened For the screw holes 3211, in other embodiments not shown in the drawings, the second fixing portions 321 can also be formed by opening the screw holes 3211 on the ring body of the fixing ring 32 (component symbols are not indicated). In addition, each of the second fixing portions 321 of the two embodiments described in this paragraph surrounds the cavity 320.

As shown in FIG. 7 in conjunction with FIG. 3, the second embodiment of the present invention is roughly the same as the aforementioned first embodiment, and the difference is only in the fixing element 4b, the first fixing portion 221 and the second fixing portion 321 of the second embodiment. The differences are detailed below.

Each fixing element 4b may be a protrusion protruding from the inner wall surface 60 of the housing 6, each first fixing portion 221 is provided with a first through hole 2212 in this embodiment, and each second fixing portion 321 is respectively provided in this embodiment A second through hole 3212 is opened, and each fixing element 4b is respectively inserted and fixed to each first through hole 2212 and each second through hole 3212 along the radial direction D2 so as to be assembled and detached. In this way, the second embodiment also has all the effects of the first embodiment.

It must be noted that the housing 6 includes a first housing 61 and a second housing 62 that can be detached and combined with each other, and each fixing element 4b is respectively protruding from the inner wall surface 60 of the first housing 61 and the second housing. 62的内壁面60。 62的内壁面60。 62的内wall面60.

As shown in FIGS. 8-9, the third embodiment of the present invention is roughly the same as the aforementioned first embodiment, and the difference is only in the fixing element 4c, the first fixing portion 221 and the second fixing portion 321 of the third embodiment. , Detailed as follows.

The fixing element 4c can be a buckle, which is preferably C-shaped or U-shaped, and therefore has a transverse arm 41 and two longitudinal arms 42. The first fixing portion 221 of this embodiment is the embossing block 2213 formed on the inner surface 222 (as shown in FIG. 9). The second fixing portion 321 is a positioning block 3213 formed on the ring body of the fixing ring 32 along the radial direction D2, and a groove 326 is formed in the positioning block 3213 along the radial direction D2. Among them, the second fixing portion 321 and the first fixing portion 221 together constitute the aforementioned fixing portion group C.

The transverse arms 41 of each fixing element 4c are respectively inserted and positioned in the groove 326 along the radial direction D2, the two longitudinal arms 42 of each fixing element 4c are inserted into each fixing part group C, and the longitudinal arms 42 are inserted into the positioning block 3213 through And stop at the floating bump 2213. In this way, the cover 22 can be sandwiched and fixed between the inner top wall of the fixing ring 32 and the two longitudinal arms 42 of each fixing element 4c.

Thereby, the user can detach the driving device 2 from the engaging member 3 separately by removing the fixing elements 4c along the radial direction D2, thus having all the effects of the first embodiment.

In other embodiments not shown in the drawings, each of the second fixing portions 321 may also be a receptacle opened in the ring body of the fixing ring 32. Since the receptacle itself is closed, the aforementioned groove 326 is not required. When fixing, as long as the two longitudinal arms 42 of the fixing element 4c are inserted into the socket-shaped second fixing portion 321, the two longitudinal arms 42 can be blocked on the inner side surface 222, and the cover 22 can be sandwiched and fixed to Between the inner top wall of the fixing ring 32 and the two longitudinal arms 42 of each fixing element 4c.

In addition, when other different driving bodies (not shown in the figure) are to be used, as long as this different driving body 21 is fixed with the same cover 22, the cover 22 can be assembled and removed along the radial direction D2 as described above. The ground is fixed to the connecting member 3, so it also has all the effects as described above.

As shown in Figures 10 and 11, the fourth embodiment of the present invention is different from the previous embodiments in that the cover 22 is roughly cross-shaped, including a transverse portion 227 and a longitudinal portion 228 cross-connected with the transverse portion 227, wherein The length of the lateral portion 227 is smaller than the length of the longitudinal portion 228, and each of the first fixing portions 221 is a positioning plane 2214 respectively formed on the end surface of the longitudinal portion 228. A ring wall 327 is provided inside the fixing ring 32, and a notch 328 is respectively provided at the corresponding position of the ring wall 327. Each second fixing portion 321 is a socket 3214 respectively opened in the fixing ring 32. The socket 3214 and the positioning plane 2214 together form a fixing part group C, and the fixing element 4d can be a plug.

Furthermore, this embodiment also includes an elastic piece 45 which is elastically clamped between the cover 22 and the fixing ring 32 (as shown in FIG. 15).

As shown in Figures 12 and 14, when combined, the longitudinal portion 228 of the cover 22 is aligned with the gap 328 of the ring wall 327 for embedding, and then the cover 22 is rotated 90 degrees to penetrate the ring wall 327 to the longitudinal direction of the cover 22 The portion 228 serves as a stop, penetrates the insertion hole 3213 through the fixing elements 4d and abuts against the positioning plane 2213, so that the driving device 2 is fixed to the connecting member 3. The elastic piece 45 forms a pre-compression elastic force between the cover body 22 and the assembly ring 31, thereby effectively preventing the fixing element 4d from loosening.

In summary, the hand-held power tool of the present invention can indeed achieve the intended purpose of use, and can solve the deficiencies of the existing technology. It fully meets the requirements of an invention patent application. The application is filed in accordance with the patent law. Please check and grant the patent in this case. , To protect the rights of inventors.

The above are only the preferred and feasible embodiments of the present invention, and are not limited to the scope of the present invention. Any equivalent structural changes made by using the description and drawings of the present invention are all included in the present invention. Within the scope of the rights, he shall be Chen Ming.

1: Front-end organization

11: Actuator

12: Adjust the screw sleeve

13: Assembly Department

2: drive device

21: Drive body

211: drive shaft

212: end face

213: body wall

22: Lid

220: Axle hole

221: first fixed part

2211: positioning hole

2212: first through hole

2213: bump

2214: Positioning plane

222: inside

223: The Wall Surface

224: Screw

227: Transverse section

228: Longitudinal section

3: Connecting components

31: Assemble the ring

32: fixed ring

320: Chamber

321: second fixed part

3211: screw hole

3212: second through hole

3213: positioning block

3214: jack

326: ditch

327: Ring Wall

328: Gap

4a, 4b, 4c, 4d: fixed elements

41: cross arm

42: Trailing arm

45: shrapnel

5: Back-end organization

6: Shell

60: inner wall surface

61: The first shell

62: second shell

C: Fixed part group

D1: Axial

D2: radial

Fig. 1 is a perspective view of the first embodiment of the present invention.

Fig. 2 is a cross-sectional view of the first embodiment of the present invention.

Fig. 3 is a perspective exploded view of the first embodiment of the present invention (the rear mechanism is omitted).

FIG. 4 is an enlarged view of the driving device in FIG. 3 according to the present invention.

FIG. 5 is a perspective exploded view of the partial components in FIG. 3 according to the present invention, showing a state where the driving device has not been fixed to the front mechanism.

FIG. 6 is a three-dimensional assembly diagram of the present invention according to FIG. 5.

Fig. 7 is a cross-sectional view of the second embodiment of the present invention.

FIG. 8 is a perspective exploded view of partial components of the third embodiment of the present invention, showing the state that the driving device has not been fixed to the front mechanism.

FIG. 9 is a cross-sectional view of the present invention according to FIG. 8.

Fig. 10 is an exploded view of the driving device of the fourth embodiment of the present invention.

Fig. 11 is an exploded view of the front mechanism, the driving device, the engaging member and the fixing element of the fourth embodiment of the present invention.

Fig. 12 is a sectional view (1) of the combined state of the cover body and the fixing ring according to the fourth embodiment of the present invention.

Fig. 13 is a sectional view (2) of the combined state of the cover body and the fixing ring according to the fourth embodiment of the present invention.

Fig. 14 is a sectional view (3) of the combined state of the cover body and the fixing ring according to the fourth embodiment of the present invention.

Fig. 15 is a cross-sectional view of the driving device, the connecting member and the fixing element of the fourth embodiment of the present invention after being combined.

1: Front-end organization

11: Actuator

12: Adjust the screw sleeve

2: drive device

21: Drive body

213: body wall

22: Lid

221: first fixed part

2211: positioning hole

223: The Wall Surface

32: fixed ring

320: Chamber

321: second fixed part

3211: screw hole

4a: fixed element

Claims (12)

A hand-held power tool, including: A front-end mechanism, including an assembly part; A driving device, comprising a driving body, a driving shaft extending from the driving body, and a cover sleeved around the driving shaft, the cover being provided with a first fixing part; An engagement member includes an assembly ring and a fixing ring extending from the assembly ring, and is assembled to the assembly part of the front section mechanism by the assembly ring, and the fixing ring is provided with an assembly corresponding to the first fixing part. A second fixing part, the second fixing part and the first fixing part together form a fixing part group; and A fixing element, which can be assembled and detachably connected to the fixing part group; Wherein, after the fixing element is detached from the fixing part group, the driving device can be detached from the connecting member. The hand-held power tool according to claim 1, wherein the drive body defines an axial direction along the length of the drive shaft, and also defines a radial direction perpendicular to the axial direction, the fixing element is a screw, and the first fixing The part is a positioning hole opened in the cover body along the radial direction, the second fixing part is a screw hole opened in the fixing ring along the radial direction, the screw hole and the positioning hole are diametrically opposed to each other, the screw Screw the screw hole and embed in the positioning hole. The hand-held power tool of claim 1, wherein the drive body defines an axial direction along the length of the drive shaft, and defines a radial direction perpendicular to the axial direction, the fixing element is a protruding column, and the first The fixed portion is a first through hole opened in the cover along the radial direction, the second fixed portion is a second through hole opened in the fixed ring along the radial direction, the first through hole and the second through hole The through holes are diametrically opposed to each other, and the protruding column is inserted into the first through hole and the second through hole. The hand-held power tool according to claim 1, wherein the drive body defines an axial direction along the length of the drive shaft, and also defines a radial direction perpendicular to the axial direction, the fixing element is a buckle ring, and the first The fixed portion is a raised block formed on the cover, the second fixed portion is a positioning block formed on the fixed ring, the positioning block and the raised block are diametrically opposed to each other, and the buckle ring is sleeved on the fixed ring. The positioning block and the embossing block. The hand-held power tool according to claim 4, wherein the positioning block is provided with a groove along the radial direction, the buckle includes a transverse arm and two longitudinal arms connected to the transverse arm, and the transverse arm is embedded and integrated along the radial direction. Positioned in the groove, each of the longitudinal arms clamps and fixes the positioning block and the floating convex block. The hand-held power tool according to claim 1, wherein the cover includes a transverse portion and a longitudinal portion cross-connected with the transverse portion, the fixing element is a pin, and the first fixing portion is formed on the longitudinal portion A positioning plane, the second fixing portion is a socket opened in the fixing ring, and the plug penetrates through the socket and abuts against the positioning plane. The hand-held power tool according to claim 6, wherein the length of the transverse portion is less than the length of the longitudinal portion, a ring wall is provided inside the fixing ring, and a gap is respectively provided at a corresponding position of the ring wall, and the longitudinal portion is Entering from the gap is stopped by the ring wall after being rotated. The hand-held power tool according to claim 7, further comprising an elastic piece which is elastically clamped between the cover body and the fixing ring. The hand-held power tool according to claim 1, further comprising a shell covering the driving device. The hand-held power tool according to claim 1, further comprising a detachable shell covering the driving device and the connecting member, and the fixing element is protrudingly provided on the inner wall surface of the shell. The hand-held power tool according to claim 1, wherein the first fixing portion, the second fixing portion and the fixing elements are all provided in plural and the number is equal. The hand-held power tool according to claim 1, wherein the fixing element is exposed from the connecting member through the second fixing portion.

Images