Electric tool

Abstract

The embodiment of the utility model relates to an electric tool which comprises a left half shell, a right half shell and a reduction gearbox seat, the right half shell and the left half shell are mutually spliced, and a splicing surface is formed between the left half shell and the right half shell; the reduction gearbox seat is spliced with the left half shell and the right half shell; the left half shell is provided with a first buckling part, the right half shell is provided with a second buckling part, the reduction gearbox base is provided with a first bayonet part, the first bayonet part extends in the first direction, the first direction is perpendicular to the splicing face, the first buckling part abuts against one end of the first bayonet part, and the second buckling part abuts against the other end of the first bayonet part. The left half shell and the right half shell are tightened towards the splicing face in the first direction. According to the electric tool provided by the embodiment of the invention, the splicing surface between the left half shell and the right half shell can be reduced, and meanwhile, the attractiveness of a product is improved while the cost of the electric tool is not increased.

Description

Technical Field

[0001] The present application relates to the technical field of power tools, and particularly to a power tool. Background Art

[0002] Power tools (such as electric drills) generally have a split-type housing, and the split-type housing often has a problem of excessive joint gap.

[0003] Currently, most often solve the problem of excessive joint gap by increasing the number of screws, but using too many screws will affect the appearance of the product, reduce the aesthetic degree of the product, and at the same time increase the production cost of the electric drill. Summary of the Invention

[0004] In view of this, embodiments of the present application provide a power tool to solve at least one problem in the background art.

[0005] In a first aspect, embodiments of the present application provide a power tool, the power tool includes:

[0006] A housing, which is composed of a left half-shell and a right half-shell spliced relatively, and the housing is used to accommodate a motor;

[0007] A speed reducer seat, which is arranged in front of the housing, and the speed reducer seat is used to accommodate a transmission member that is in transmission connection with the motor;

[0008] Wherein, the front end faces of the left half-shell and the right half-shell respectively protrude forward to form a first buckle portion and a second buckle portion; the rear end face of the speed reducer seat is recessed forward to form a first bayonet portion; the first buckle portion and the second buckle portion are clamped in the first bayonet portion to prevent the left half-shell and the right half-shell from opening.

[0009] Combined with the first aspect of the present application, in an optional embodiment, a splicing surface is formed between the left half-shell and the right half-shell;

[0010] The speed reducer seat is simultaneously spliced with the left half-shell and the right half-shell in a direction perpendicular to the splicing surface;

[0011] The first bayonet portion extends in a first direction perpendicular to the splicing surface;

[0012] One end of the first buckle portion away from the splicing surface abuts against one end of the first bayonet portion, and one end of the second buckle portion away from the splicing surface abuts against the other end of the first bayonet portion, so that the left half-shell and the right half-shell are tightened towards the splicing surface in the first direction.

[0013] Combined with the first aspect of the present application, in an optional embodiment, there is a gap between the first buckle portion and the second buckle portion.

[0014] In connection with the first aspect of the present application, in an alternative embodiment, the first snap portion and the second snap portion are respectively provided at the edges on the radial inner sides of the front end faces of the left half shell and the right half shell and are flush with the splicing surface, and the first snap portion and the second snap portion are in mutual abutment.

[0015] In connection with the first aspect of the present application, in an alternative embodiment, the first bayonet portion is located at the edge on the radial inner side of the rear end face of the speed reducer seat and communicates with the inner space of the speed reducer seat.

[0016] In connection with the first aspect of the present application, in an alternative embodiment, the first bayonet portion is located at the rear end face of the speed reducer seat, and in the radial direction of the speed reducer seat, the first bayonet portion is located at the middle position of the rear end face of the speed reducer seat.

[0017] In connection with the first aspect of the present application, in an alternative embodiment, the first snap portion and the second snap portion are snap-connected into the first bayonet portion in the extending direction of the splicing surface.

[0018] In connection with the first aspect of the present application, in an alternative embodiment, the first snap portion is a first protrusion protruding from the surface of the left half shell, and the second snap portion is a second protrusion protruding from the surface of the right half shell;

[0019] The first bayonet portion is a first groove provided on the surface of the speed reducer seat.

[0020] In connection with the first aspect of the present application, in an alternative embodiment, along the extending direction of the splicing surface, the left half shell is further provided with at least one first mounting hole, the right half shell is further provided with at least one second mounting hole, and the speed reducer seat is provided with at least two third mounting holes opposite to the positions of the first mounting hole and the second mounting hole;

[0021] The power tool further includes at least two first fasteners, one of the first fasteners is inserted into the first mounting hole and one of the third mounting holes, and the other first fastener is inserted into the second mounting hole and the other third mounting hole to lock the left half shell and the right half shell to the speed reducer seat respectively along the extending direction of the splicing surface.

[0022] In connection with the first aspect of the present application, in an alternative embodiment, along the first direction, the left half shell is at least provided with one fourth mounting hole, the right half shell is at least provided with one fifth mounting hole, and the positions of the fourth mounting hole and the fifth mounting hole are opposite;

[0023] The power tool further includes at least one second fastener, which is inserted into the fourth mounting hole and the fifth mounting hole to lock the left half shell and the right half shell.

[0024] Combined with the first aspect of the present application, in an alternative embodiment, at least one third snap portion is further provided at an edge of the left half shell close to the right half shell, and at least one second bayonet portion is further provided at an edge of the right half shell close to the left half shell. The second bayonet portion matches the third snap portion to radially limit the left half shell and the right half shell.

[0025] The power tool provided by the embodiment of the present application is provided with a first snap portion and a second snap portion on the left half shell and the right half shell respectively. The first snap portion and the second snap portion are respectively abutted against the first bayonet portion of the speed reducer seat, so that the first snap portion and the second snap portion are subjected to opposite forces and respectively drive the left half shell and the right half shell to tighten towards the splicing surface, thereby reducing the splicing surface between the left half shell and the right half shell, and can improve the aesthetics of the product without increasing the cost of the power tool.

[0026] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and the descriptions thereof are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0028] Figure 1 is a three-dimensional view of the overall structure of the power tool provided by the embodiment of the present application;

[0029] Figure 2 is an exploded view of the structures of the left half shell, the right half shell and the speed reducer seat in the power tool provided by the embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the positional relationship between the first snap portion, the second snap portion and the first bayonet portion in the power tool provided by the embodiment of the present application;

[0031] Figure 4 is another schematic diagram of the positional relationship between the first snap portion, the second snap portion and the first bayonet portion in the power tool provided by the embodiment of the present application;

[0032] Figure 5 is Figure 2 an enlarged view of part A in

[0033] Figure 6 is Figure 2 an enlarged view of part B in

[0034] Figure 7 For Figure 2 an enlarged view of position C in the figure;

[0035] Figure 8 It is a schematic structural view of the first buckle part located at the middle position of the speed reduction box seat in the electric tool provided by the embodiment of the present application.

[0036] Reference numerals:

[0037] 100, electric tool; 1a, splicing surface;

[0038] 10, left half shell; 110, first buckle part; 111, first protrusion; 120, first mounting hole; 130, fourth mounting hole; 140, third buckle part;

[0039] 20, right half shell; 210, second buckle part; 211, second protrusion; 220, second mounting hole; 230, fifth mounting hole;

[0040] 30, speed reduction box seat; 310, first bayonet part; 311, first groove; 320, third mounting hole. Detailed implementation manners

[0041] In order to make the technical solutions and beneficial effects of the present invention more obvious and understandable, the following will be described in detail by listing specific embodiments. Among them, the attached drawings are not necessarily drawn to scale, and local features can be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which the present application belongs.

[0042] In the description of the present invention, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, that is, it cannot be understood as a limitation to the present invention.

[0043] In the present invention, the terms "first" and "second" are only used for the purpose of clear description, and cannot be construed as indicating the relative importance of the indicated features or the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may clearly include at least one such feature. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc.; the meaning of "several" is at least one, such as one, two, three, etc.; unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly defined, terms such as "installed", "connected", "joined", "fixed", "set" shall be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly defined, the first feature being "on", "above", "over" and "upon", "under", "beneath", "below" or "underneath" the second feature may be that the first feature and the second feature are in direct contact, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "upon" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature being "under", "beneath", "below" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0046] The power tool 100 includes but is not limited to an electric drill, a hammer drill, an electric screwdriver, and an electric wrench.

[0047] Such as Figure 1 And Figure 2As shown in the figure, an embodiment of the present application provides a power tool 100, which includes a housing and a reduction gearbox seat 30. The housing is formed by splicing a left half shell 10 and a right half shell 20, and the housing is used to accommodate a motor. The reduction gearbox seat 30 is disposed in front of the housing and is used to accommodate a transmission member that is drivingly connected to the motor. The front end faces of the left half shell 10 and the right half shell 20 respectively protrude forward with a first buckle portion 110 and a second buckle portion 210. The rear end face of the reduction gearbox seat 30 is recessed forward with a first bayonet portion 310, and the first buckle portion 110 and the second buckle portion 210 are snap-fitted into the first bayonet portion 310 to prevent the left half shell 10 and the right half shell 20 from opening. It can be understood that the first bayonet portion 310 can limit the first buckle portion 110 and the second buckle portion 210, thereby greatly reducing the gap between the left half shell 10 and the right half shell 20.

[0048] A splicing surface 1a is formed between the left half shell 10 and the right half shell 20. The reduction gearbox seat 30 is spliced with both the left half shell 10 and the right half shell 20 in a direction perpendicular to the splicing surface.

[0049] The first bayonet portion 310 extends in a first direction, and the first direction is perpendicular to the splicing surface 1a. One end of the first buckle portion 110 away from the splicing surface 1a abuts against one end of the first bayonet portion 310, and one end of the second buckle portion 210 away from the splicing surface 1a abuts against the other end of the first bayonet portion 310, so that the left half shell 10 and the right half shell 20 are tightened toward the splicing surface 1a in the first direction.

[0050] It can be understood that, as Figure 3 and Figure 4 shown, when the first buckle portion 110 and the second buckle portion 210 respectively abut against both ends of the first bayonet portion 310, the first buckle portion 110 and the second buckle portion 210 respectively receive the abutting force from the inner wall of the first bayonet portion 310 of the reduction gearbox seat 30, and the force directions of the first buckle portion 110 and the second buckle portion 210 are opposite, but both are in the direction of the extension line of the splicing surface 1a, that is, Figure 3 the arrows f1 and f2 shown in the figure. In this way, the left half shell 10 and the right half shell 20 can be respectively driven to tighten toward the splicing surface 1a under the action of the first buckle portion 110 and the second buckle portion 210, further reducing the splicing surface 1a between the left half shell 10 and the right half shell 20, and improving the aesthetics of the product without increasing the cost of the power tool 100.

[0051] In an alternative embodiment, as Figures 5 to 7 shown, the first buckle portion 110 is a first protrusion 111 protruding from the surface of the left half shell 10, the second buckle portion 210 is a second protrusion 211 protruding from the surface of the right half shell 20, and the first bayonet portion 310 is a first groove 311 provided on the surface of the reduction gearbox seat 30. The first protrusion 111 and the second protrusion 211 respectively abut against both ends of the first groove 311.

[0052] Figure 3 There is a gap between the first buckle portion 110 and the second buckle portion 210 shown in the figure. Figure 4 The first buckle portion 110 and the second buckle portion 210 shown in the figure are in mutual abutment.

[0053] For the convenience of clearly explaining the specific content of the technical solution of the present invention, the following definitions are made: Define the rotation axis of the output torque of the power tool 100 and the direction parallel thereto as the axial direction; Define the radial direction in the circumferential direction with the rotation axis as the central axis as the radial direction; Define the output direction of the power tool 100 as the front; Define the direction opposite to the output direction of the power tool 100 as the rear.

[0054] When the first buckle portion 110 and the second buckle portion 210 are in mutual abutment, as Figure 5 and Figure 6 shown, the first buckle portion 110 and the second buckle portion 210 are respectively provided at the edges on the radially inner side of the front end faces of the left half shell 10 and the right half shell 20 and are flush with the splicing surface 1a.

[0055] When there is a gap between the first buckle portion 110 and the second buckle portion 210, the first buckle portion 110 and the second buckle portion 210 are prone to deformation due to local stress. The mutual abutment of the first buckle portion 110 and the second buckle portion 210 can improve the connection strength and greatly reduce the occurrence of deformation. However, the gap between the first buckle portion 310 and the second buckle portion 210 can improve the installation efficiency of the left half shell 10, the right half shell 20 and the reduction gearbox seat 30.

[0056] Figure 3 and Figure 4 show that the first buckle portion 310 is located at the edge on the radially inner side of the rear end face of the reduction gearbox seat 30 and is communicated with the internal space of the reduction gearbox seat 30, so as to facilitate the installation of the first buckle portion 110 and the second buckle portion 210 in the first buckle portion 310.

[0057] As an alternative, Figure 8 shown in the figure, in the radial direction of the reduction gearbox seat 30, the first buckle portion 310 is located at the middle position of the rear end face of the reduction gearbox seat 30, which increases the installation difficulty compared with the above embodiment, but the first buckle portion 310 located at the middle position of the reduction gearbox seat 30 can improve the connection firmness between the first buckle portion 110, the second buckle portion 210 and the first buckle portion 310.

[0058] In an alternative embodiment, the first buckle portion 110 and the second buckle portion 210 are completely snapped into the first buckle portion 310 in the extending direction of the splicing surface 1a to ensure the connection effect between the reduction gearbox seat 30 and the left half shell 10 and the right half shell 20.

[0059] In an alternative embodiment, asFigure 1 , Figure 2 , Figure 5 and Figure 7 As shown in Figure 7 , along the extending direction of the splicing surface 1a, the left half shell 10 is further provided with at least one first mounting hole 120, the right half shell 20 is further provided with at least one second mounting hole 220, and the speed reducer seat 30 is further provided with at least two third mounting holes 320 which are opposite to the positions of the first mounting hole 120 and the second mounting hole 220.

[0060] The power tool 100 further includes at least two first fasteners (not shown in the figure). One first fastener is inserted into the first mounting hole 120 and one third mounting hole 320, and the other first fastener is inserted into the second mounting hole 220 and the other third mounting hole 320 to lock the left half shell 10 and the right half shell 20 to the speed reducer seat 30 respectively along the extending direction of the splicing surface 1a.

[0061] In an alternative embodiment, as Figure 1 and Figure 2 shown, along the first direction, the left half shell 10 is at least provided with one fourth mounting hole 130, the right half shell 20 is at least provided with one fifth mounting hole 230, and the positions of the fourth mounting hole 130 and the fifth mounting hole 230 are opposite. The power tool 100 further includes at least one second fastener, and the second fastener is inserted into the fourth mounting hole 130 and the fifth mounting hole 230 to lock the left half shell 10 and the right half shell 20.

[0062] It should be noted that, based on the size requirements of the power tool 100, the number of the first mounting hole 120, the second mounting hole 220, the third mounting hole 320, the fourth mounting hole 130 and the fifth mounting hole 230 is not limited in the embodiments of the present application. The first fastener and the second fastener are preferably bolts, but of course not limited thereto.

[0063] In an alternative embodiment, as Figure 2 shown, at least one third buckle portion 140 is further provided at the edge of the left half shell 10 close to the right half shell 20, and at least one second bayonet portion is further provided at the edge of the right half shell 20 close to the left half shell 10, and the second bayonet portion matches the third buckle portion 140. The matching of the second bayonet portion and the third buckle portion 140 can improve the splicing effect of the left half shell 10 and the right half shell 20. The first bayonet portion 310 defines the relative position between the left half shell 10 and the right half shell 20 from the first direction. The third buckle portion 140 and the second bayonet portion further define the relative position between the left half shell 10 and the right half shell 20 radially, improving the splicing effect of the left half shell 10 and the right half shell 20.

[0064] As an example, the second bayonet portion is a second groove (not shown in the figure) on the surface of the right half shell 20, and the third buckle portion 140 is a third protrusion protruding from the surface of the left half shell 10.

[0065] It should be understood that the above embodiments are all exemplary and do not cover all possible implementation manners included in the claims. Without departing from the scope of the present disclosure, various deformations and changes can be made on the basis of the above embodiments. Similarly, various technical features of the above embodiments can be arbitrarily combined to form additional embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only represent several implementation manners of the present application and do not limit the protection scope of the patent of the present application.

Claims

1. An electric tool, characterized in that, The power tool (100) includes: a housing which is formed by relatively splicing a left half housing (10) and a right half housing (20), and the housing is used for accommodating a motor; a speed reducer seat (30) which is arranged in front of the housing, and the speed reducer seat (30) is used for accommodating a transmission member which is in transmission connection with the motor; Wherein, a first buckle part (110) and a second buckle part (210) are respectively protruded forward from the front end faces of the left half housing (10) and the right half housing (20); a first bayonet part (310) is concaved forward from the rear end face of the speed reducer seat (30); the first buckle part (110) and the second buckle part (210) are clamped in the first bayonet part (310) to prevent the left half housing (10) and the right half housing (20) from opening.

2. The electric tool according to claim 1, characterized in that, A splicing surface (1a) is formed between the left half housing (10) and the right half housing (20); The speed reducer seat (30) is spliced with the left half housing (10) and the right half housing (20) simultaneously in a direction perpendicular to the splicing surface (1a); The first bayonet part (310) extends in a first direction perpendicular to the splicing surface (1a); One end of the first buckle part (110) far from the splicing surface (1a) abuts against one end of the first bayonet part (310), and one end of the second buckle part (210) far from the splicing surface (1a) abuts against the other end of the first bayonet part (310), so that the left half housing (10) and the right half housing (20) are tightened towards the splicing surface (1a) in the first direction.

3. The power tool according to claim 1 or 2, characterized in that A gap is formed between the first buckle part (110) and the second buckle part (210).

4. The power tool according to claim 2, characterized in that, The first buckle part (110) and the second buckle part (210) are respectively arranged at the edges on the radial inner sides of the front end faces of the left half housing (10) and the right half housing (20) and are flush with the splicing surface (1a), and the first buckle part (110) and the second buckle part (210) abut against each other.

5. The power tool according to claim 1, characterized in that, The first bayonet part (310) is located at the edge on the radial inner side of the rear end face of the speed reducer seat (30) and is communicated with the inner space of the speed reducer seat (30).

6. The electric tool according to claim 1, characterized in that, The first bayonet part (310) is located at the rear end face of the speed reducer seat (30), and in the radial direction of the speed reducer seat (30), the first bayonet part (310) is located at the middle position of the rear end face of the speed reducer seat (30).

7. The power tool according to claim 2, wherein, The first buckle part (110) and the second buckle part (210) are clamped in the first bayonet part (310) in the extending direction of the splicing surface (1a).

8. The power tool according to claim 1, characterized in that, The first buckle part (110) is a first protrusion (111) protruded from the surface of the left half housing (10), and the second buckle part (210) is a second protrusion (211) protruded from the surface of the right half housing (20); The first bayonet part (310) is a first groove (311) arranged on the surface of the speed reducer seat (30).

9. The power tool according to claim 2, characterized in that, In the extending direction of the splicing surface (1a), the left half shell (10) is further provided with at least one first mounting hole (120), the right half shell (20) is further provided with at least one second mounting hole (220), and the speed reducer seat (30) is provided with at least two third mounting holes (320) opposite to the positions of the first mounting hole (120) and the second mounting hole (220). The power tool (100) further includes at least two first fasteners. One of the first fasteners is inserted into the first mounting hole (120) and one of the third mounting holes (320), and the other first fastener is inserted into the second mounting hole (220) and the other third mounting hole (320) to lock the left half shell (10) and the right half shell (20) to the speed reducer seat (30) respectively along the extending direction of the splicing surface (1a).

10. The power tool according to claim 2, characterized in that, In the first direction, the left half shell (10) is at least provided with one fourth mounting hole (130), the right half shell (20) is at least provided with one fifth mounting hole (230), and the positions of the fourth mounting hole (130) and the fifth mounting hole (230) are opposite to each other. The power tool (100) further includes at least one second fastener, and the second fastener is inserted into the fourth mounting hole (130) and the fifth mounting hole (230) to lock the left half shell (10) and the right half shell (20).

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