Portable electric tool

Abstract

The utility model provides a portable electric tool which comprises a main body which comprises a shell and a driving assembly arranged in the shell. The first connecting piece is connected with the driving assembly; the execution assembly comprises a second connecting piece; wherein one of the first connecting piece and the second connecting piece comprises a connecting column, the other one of the first connecting piece and the second connecting piece is provided with a containing hole for containing the connecting column, an elastic buckle protrudes out of the side face of the connecting column, a groove is formed in the inner side face of the containing hole, and when the connecting column is contained in the containing hole, the elastic buckle is clamped in the groove. The elastic buckle is contained in the groove, so that the execution assembly is detachably connected to the first connecting piece. Through the cooperation of the elastic buckle and the groove, the execution assembly can be conveniently and rapidly connected to the main body of the electric tool.

Description

TECHNICAL FIELD

[0001] The utility model relates to portable electric tools, specifically relates to a quick-release structure's electric cleaning brush. BACKGROUND

[0002] Portable electric tools have become more and more popular. For example, electric cleaning brush, its widely used in cleaning kitchen, bathroom, toilet, car etc. The brush head of electric cleaning brush on the market at present generally can not be disassembled or disassembled very difficultly, leading to the user when thinking to replace brush head very difficult. SUMMARY

[0003] Therefore, the utility model provides a kind of portable electric tool.

[0004] To solve the above technical problems, the utility model provides a kind of portable electric tool, including: main body, the main body includes shell and the drive assembly of being set in shell;First connecting piece, the first connecting piece is connected with the drive assembly;And execution component, the execution component includes second connecting piece;Wherein, one of the first connecting piece and second connecting piece includes connecting column, the other of the first connecting piece and second connecting piece is provided with the receiving hole of receiving the connecting column, the side of the connecting column protrudes with elastic buckle, the inner side of the receiving hole is provided with recess, when the connecting column is received in the receiving hole, the elastic buckle is received in the recess, to connect the execution component detachably in the first connecting piece.

[0005] Optionally, the connecting column has a non-circular cross-section, and the receiving hole is shaped to correspond to the connecting column.

[0006] Optionally, the shell includes an outer shell and an inner shell received in the outer shell, and the drive assembly is disposed in the inner shell.

[0007] Optionally, the electric tool further includes a circuit board electrically connected to the drive assembly, the inner shell is a hollow cylinder, the side of the inner shell is provided with a through hole, and the circuit board is received in the through hole.

[0008] Optionally, the drive assembly includes a motor and a transmission assembly connected to the motor, and the transmission assembly is connected to the first connecting piece.

[0009] Optionally, the transmission assembly includes a gear box connected to the motor, a shaft coupling connected to the gear box, a first gear connected to the shaft coupling, and a second gear connected to the first connecting piece, and the first gear and the second gear are engaged.

[0010] Optionally, the electric tool further comprises a shaft sleeve arranged in the main body, the shaft sleeve is provided with a shaft hole, the first connecting member comprises an output shaft connected with the connecting column, the output shaft is rotatably accommodated in the shaft hole of the shaft sleeve and connected with the second gear.

[0011] Optionally, the electric tool further comprises a sealing ring arranged between the output shaft and the inner surface of the shaft hole.

[0012] Optionally, the elastic buckle comprises a sliding column and an elastic piece, the side surface of the connecting column is provided with an accommodation hole, the sliding column is partially accommodated in the accommodation hole, and the elastic piece is arranged between the sliding column and the bottom surface of the accommodation hole.

[0013] Optionally, the first gear and the second gear are bevel gears, and the included angle between the rotation axis of the first gear and the rotation axis of the second gear is between 100 degrees and 170 degrees.

[0014] The technical scheme of the utility model has the following advantages: through cooperation of the elastic buckle and the groove, the execution assembly can be conveniently and quickly connected to the main body of the electric tool. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor according to these drawings.

[0016] Figure 1 It is a perspective view of the electric tool according to the embodiment of the utility model, wherein the execution assembly is omitted.

[0017] Figure 2 It is a perspective view of the execution assembly of the electric tool according to the embodiment of the utility model.

[0018] Figure 3 It is an exploded view of the electric tool according to the embodiment of the utility model, wherein the execution assembly is omitted.

[0019] Figure 4 It is a perspective view of the electric tool according to the embodiment of the utility model, wherein the execution assembly and the shell of the main body are omitted.

[0020] Figure 5 It is another angle perspective view of the assembly. Figure 4

[0021] Figure 6 It is a sectional view of the electric tool according to the embodiment of the utility model. ​

[0022] Figure 7 FIG. 4 is a sectional view of a driving assembly of the electric tool according to an embodiment of the present application.

[0023] Figure 8 FIG. 5 is a perspective view of various elements in a main body inner shell of the electric tool according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0026] Reference Figures 1-3 In one embodiment, a portable electric tool 100 includes a main body 10, a first connecting member 20 and an executing assembly 30. The main body 10 includes a housing 40 and a driving assembly 50 arranged in the housing 40. The first connecting member 20 is connected with the driving assembly 50. The executing assembly 30 includes a second connecting member 60. One of the first connecting member 20 and the second connecting member 60 includes a connecting column, and the other of the first connecting member 20 and the second connecting member 60 is provided with a receiving hole for receiving the connecting column. Hereinafter, the first connecting member 20 is taken as an example to be described, which includes a connecting column 21. At this time, the second connecting member 60 includes a receiving hole 61. The side surface of the connecting column 21 is provided with an elastic buckle 22, and the inner side surface of the receiving hole 61 is provided with a groove 62. When the connecting column 21 is received in the receiving hole 61, the elastic buckle 22 is received in the groove 62, so that the executing assembly 30 is detachably connected with the first connecting member 20.

[0027] In one embodiment, the electric tool 100 is an electric cleaning brush, and the executing assembly 30 is a brush. Figure 2 Different types of brushes (including brushes 30a, 30b, 30c and 30d) are shown, which all have the second connecting member 60 at one end. Through the above structure, in use, the user can connect the executing assembly 30 with the main body 10 according to the need, and then make the driving assembly 50 drive the executing assembly 30 to rotate, through the cooperation of the elastic buckle 22 and the groove 62. When needed, the user can pull the executing assembly 30 outward, so that the elastic buckle 22 is elastically deformed to be separated from the groove 62, and then the user can detach the executing assembly 30 from the main body 10.

[0028] With reference to Figures 6 to 8 In one embodiment, the connecting post 21 has a non-circular cross section, and the receiving hole 61 is shaped to match the connecting post 21. For example, the cross section of the connecting post 21 is square, and correspondingly, the receiving hole 61 is also square, and the connecting post 21 can be exactly received in the receiving hole 61. With such a configuration, the quick connection of the second connecting member 60 and the first connecting member 20 can be facilitated. Specifically, in the present embodiment, each side of the square receiving hole 61 is provided with a recess 62, so that no matter how the connecting post 21 is inserted into the receiving hole 61, the elastic buckle 22 can finally be buckled into a recess 62 without additional observation. If the cross section of the connecting post 21 and the shape of the receiving hole 61 are both circular, the above-mentioned convenience cannot be brought about. In addition, it can be understood that the cross section of the connecting post 21 and the shape of the receiving hole 61 are not limited to the foregoing cases, and other suitable shapes can be selected according to actual needs.

[0029] With reference to Figure 7 In one embodiment, the elastic buckle 22 includes a sliding post 221 and an elastic member (not shown in the figure), the side of the connecting post 21 is provided with a receiving hole 211, the sliding post 221 is partially received in the receiving hole 211, and the elastic member is arranged between the sliding post 221 and the bottom surface of the receiving hole 211.

[0030] With reference to Figures 3 to 5 In one embodiment, the housing 40 includes an outer shell 41, an inner shell 42 received in the outer shell 41, and an end cover 43 connected to one end of the outer shell 41, and the driving assembly 50 is arranged in the inner shell 42. In the present embodiment, the outer shell 41 is hollow and has openings at both ends, and the outer shell 41 can be made by integral molding (e.g., injection molding). The outer shell 41 includes a cylinder 411 which is an elongated cylinder as a whole, and an inclined portion 412 connected to the end opposite to the end cover 43, and the inclined portion 412 is inclined with respect to the length direction of the cylinder 411.

[0031] In one embodiment, the inner housing 42 comprises a half housing 421 and a half housing 422, which are combined to form an elongated hollow cylinder. Most of the components of the portable power tool 100 are accommodated in the inner housing 42, such as most of the components of the drive assembly 50, the battery 70 and the circuit board 80. The circuit board 80 is electrically connected to the battery 70 and the drive assembly 50. In the present embodiment, the half housing 421 is provided with an open slot 4211 on one side edge thereof, and the half housing 422 is provided with an open slot 4221 on one side edge thereof. When the half housing 421 and the half housing 422 are combined to each other, the open slot 4211 and the open slot 4221 communicate with each other to form a square through hole 423, which is just capable of accommodating the circuit board 80. Since the circuit board 80 is accommodated in the through hole 423 instead of the inner space of the inner housing 42, this is conducive to the compactness of the inner space of the inner housing 42, and thus ensures that the inner housing 42 has a compact radial dimension. In this way, the radial compactness of the inner housing 42 is conducive to the radial compactness of the outer housing 41, and thus is conducive to the comfort of the user when holding the outer housing 41.

[0032] In one embodiment, the half housing 421 is provided with an open slot 4212 on the other side edge thereof, and the half housing 422 is provided with an open slot 4222 on the other side edge thereof. When the half housing 421 and the half housing 422 are combined to each other, the open slot 4211 and the open slot 4221 communicate with each other to form a through hole 424, and a part of the side surface of the battery 70 is exposed from the through hole 424. Through such a configuration, it is conducive to the reduction of the space of the inner housing 42 for accommodating the battery 70, and is conducive to the compact radial dimension of the inner housing 42.

[0033] In one embodiment, the drive assembly 50 comprises a motor 51 and a transmission assembly 52 connected to the motor shaft of the motor 51, and the transmission assembly 52 is connected to the first connecting member 20. The transmission assembly 52 is used to transmit the rotary motion of the motor 51 to the first connecting member 20.

[0034] In one embodiment, the transmission assembly 52 comprises a gear box 521 connected to the motor 51, a shaft coupling 522 connected to the output end of the gear box 521, a first gear 523 connected to the shaft coupling 522, and a second gear 524 coaxially connected to the first connecting member 20, and the first gear 523 and the second gear 524 are engaged with each other. In the present embodiment, the output end of the shaft coupling 522 extends from one end of the inner housing 42. The connection between the above-mentioned motor 51, gear box 521, shaft coupling 522 and first gear 523 can be achieved by means of the known connection technology, and the connection between the motor 51, gear box 521, shaft coupling 522 and the battery 70 and the inner housing 42 can be achieved by means of the known connection technology, which will not be described herein.

[0035] By such a configuration, rotation of the motor shaft of the motor 51 can drive the input end of the gear box 521 to rotate, and finally drive the output end of the gear box to rotate. The coupling 522 is driven by the gear box 521 to rotate, so that the first gear 523 coaxially connected with the coupling 522 rotates, and further drives the second gear 524 engaged with the first gear 523 to rotate, and finally causes the first connecting member 20 coaxially connected with the second gear 524 to rotate.

[0036] In the above embodiment, the use of the coupling 522 can make the first gear 523 not too long, and reduce the processing difficulty of the first gear 523. In an embodiment, the first gear 523 and the second gear 524 are both bevel gears, and the included angle A between the rotation axis of the first gear 523 and the rotation axis of the second gear 524 is between 100 degrees and 170 degrees.

[0037] In an embodiment, the power tool 100 further comprises a shaft sleeve 90 arranged in the main body 10, the shaft sleeve 90 is provided with a shaft hole 91, and the first connecting member 20 further comprises an output shaft 23 connected with the connecting column 21, the output shaft 23 is rotatably received in the shaft hole 91 of the shaft sleeve 90 and coaxially connected with the second gear 524. In this way, the output shaft 23 can rotate synchronously with the second gear 524. In the embodiment, the inclined portion 412 of the housing 41 is provided with a receiving cavity 413, and the shaft sleeve 90 is fixed in the receiving cavity 413 by a conventional connecting means (such as glue). The included angle between the axis of the fixed shaft sleeve 90 and the rotation axis of the first gear 523 is between 100 degrees and 170 degrees. In the embodiment, one end of the second gear 524 is received in the shaft hole 91 of the shaft sleeve 90 and coaxially connected with the first connecting member 20. In this way, limited by the one end of the shaft sleeve 90, the second gear 524 is clamped between the first gear 523 and the shaft sleeve 90, so that it can only rotate relative to the shaft sleeve 90 and cannot be separated from the shaft sleeve 90 and the first gear 523, further causing the first connecting member 20 to only rotate relative to the shaft sleeve 90 and cannot be separated from the shaft sleeve 90.

[0038] In an embodiment, the power tool 100 further comprises a sealing ring 92 arranged between the outer side of the output shaft 23 and the inner surface of the shaft hole 91. The sealing ring 92 can prevent dust and liquid droplets from entering the inside of the housing 41 through the gap between the output shaft 23 and the shaft hole 91.

[0039] The connecting column 21 of the first connecting member 20 is received in the receiving cavity 413 of the inclined portion 412 of the shell 41, and the end of the connecting column 21 extends out of the opening of the receiving cavity 413. When the user needs to install the executing assembly 30 on the main body 10, the user needs to align the receiving hole 61 of the second connecting member 60 of the executing assembly 30 with the connecting column 21 of the first connecting member 20, and then insert the second connecting member 60 into the receiving cavity 413, in the process, the connecting column 21 gradually extends into the receiving hole 61 of the second connecting member 60, when the end of the second connecting member 60 contacts the elastic buckle 22, the elastic buckle 22 is elastically deformed under the pressure of the second connecting member 60. Specifically, the top end of the sliding column 221 of the elastic buckle 22 is arc-shaped, after the top end of the sliding column 221 is pushed by the end of the second connecting member 60, the sliding column 221 moves into the receiving hole 211 of the connecting column 21 until the sliding column 221 no longer hinders the movement of the second connecting member 60. After that, the second connecting member 60 continues to move under the push of the user, until the groove 62 of the second connecting member 60 is aligned with the receiving hole 211 of the connecting column 21, at this time, the sliding column 221 is partially received in the groove 62 under the push of the elastic member. In this way, the second connecting member 60 is connected to the first connecting member 20. When the user needs to remove the executing assembly 30, the user can exert a pulling force on the executing assembly 30 to move it away from the main body 10, in the process, the side wall of the groove 62 of the second connecting member 60 exerts a pushing force on the arc-shaped top end of the sliding column 221, due to the presence of the arc-shaped top end of the sliding column 221, the pushing force generates a radial component force, which pushes the sliding column 221 to move into the receiving hole 211 until the sliding column 221 no longer hinders the movement of the second connecting member 60. After that, under the pulling force of the user, the second connecting member 60 gradually separates from the receiving cavity 413 of the inclined portion 412 of the shell 41, thereby achieving the removal of the executing assembly 30 from the main body 10.

[0040] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A portable electric power tool characterized by comprising: The utility model relates to a drive device, comprising: a main body comprising a housing and a driving assembly arranged in the housing; a first connecting member connected with the driving assembly; and an executing assembly comprising a second connecting member; wherein one of the first connecting member and the second connecting member comprises a connecting column, the other of the first connecting member and the second connecting member is provided with a receiving hole for receiving the connecting column, a side surface of the connecting column is provided with an elastic buckle, an inner side surface of the receiving hole is provided with a groove, and when the connecting column is received in the receiving hole, the elastic buckle is received in the groove, so that the executing assembly is detachably connected with the first connecting member.

2. The portable power tool of claim 1, wherein The connecting column has a non-circular cross section, and the receiving hole is shaped to match the connecting column.

3. The portable power tool of claim 1, wherein The housing comprises an outer shell and an inner shell received in the outer shell, and the driving assembly is arranged in the inner shell.

4. The portable power tool of claim 3, wherein Further comprising a circuit board electrically connected with the driving assembly, the inner shell is a hollow cylinder, a side surface of the inner shell is provided with a through hole, and the circuit board is received in the through hole.

5. The portable power tool of claim 1, wherein The driving assembly comprises a motor and a transmission assembly connected with the motor, and the transmission assembly is connected with the first connecting member.

6. The portable power tool of claim 5, wherein, The transmission assembly comprises a gear box connected with the motor, a shaft coupling connected with the gear box, a first gear connected with the shaft coupling, and a second gear connected with the first connecting member, and the first gear and the second gear are engaged.

7. The portable power tool of claim 6, wherein Further comprising a shaft sleeve arranged in the main body, the shaft sleeve is provided with a shaft hole, the first connecting member comprises an output shaft connected with the connecting column, the output shaft is rotatably received in the shaft hole of the shaft sleeve and connected with the second gear.

8. The portable power tool of claim 7, wherein, Further comprising a sealing ring arranged between the output shaft and an inner surface of the shaft hole.

9. The portable power tool of claim 1, wherein, The elastic buckle comprises a sliding column and an elastic member, a side surface of the connecting column is provided with a receiving hole, the sliding column is partially received in the receiving hole, and the elastic member is arranged between the sliding column and a bottom surface of the receiving hole.

10. The portable power tool of claim 6, wherein, The first gear and the second gear are both bevel gears, and an included angle between a rotation axis of the first gear and a rotation axis of the second gear is between 100 degrees and 170 degrees.

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