Portable electric hand saw

Abstract

The utility model discloses a portable electric hand saw which comprises a reciprocating saw blade assembly, a main oblique bevel gear, a speed reducer, a motor, a power source and a handle shell, the main oblique bevel gear, the speed reducer, the motor and the power source are respectively arranged on the handle shell, and the reciprocating saw blade assembly is arranged on the handle shell. The reciprocating saw blade assembly comprises a saw blade, an eccentric wheel and an eccentric oblique bevel gear, one end of the saw blade, the eccentric wheel and the eccentric oblique bevel gear are arranged in a handle shell, an eccentric shaft of the eccentric wheel is connected with a saw blade shaft, a main shaft of the eccentric wheel is connected with a handle shell shaft, and an eccentric shaft of the eccentric oblique bevel gear is connected with the saw blade shaft. A main shaft of the eccentric oblique bevel gear is connected with a handle shell shaft, the main oblique bevel gear is connected with the output end of the speed reducer and meshed and linked with the eccentric oblique bevel gear, the input end of the speed reducer is connected with a rotating shaft of the motor, and the motor is electrically connected with the power source. In this way, when a hard object is cut, the situation that chippings are raised, and then splashed chippings hurt a user is avoided.

Description

Technical Field

[0001] The utility model relates to the field of hardware tools, in particular to a portable electric hand saw. Background Art

[0002] Nowadays, electric saw blades generally use high-speed reciprocating motion to cut hard objects. Although this type of saw blade has a good cutting effect, when facing hard objects, the saw blade that reciprocates back and forth at high speed is very likely to raise debris, causing the debris to splash and bring uncontrollable risks to relevant personnel. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0004] Therefore, one object of the utility model is to provide a portable electric hand saw, which can avoid raising debris when cutting hard objects and thus avoid the flying debris from injuring the user.

[0005] To achieve the above-mentioned purpose, the first embodiment of the utility model proposes a portable electric hand saw, comprising: two reciprocating saw blade assemblies, a main bevel gear, a reducer, a motor, a power supply and a handle housing, wherein the main bevel gear, the reducer, the motor and the power supply are respectively arranged on the handle housing, and the two reciprocating saw blade assemblies are respectively arranged on the handle housing, wherein:

[0006] Each of the two reciprocating saw blade assemblies comprises: a saw blade, an eccentric wheel and an eccentric bevel gear, and the saw blades in the two reciprocating saw blade assemblies are attached together, wherein:

[0007] One end of the saw blade, the eccentric wheel and the eccentric bevel gear are respectively arranged in the handle housing;

[0008] The eccentric shaft of the eccentric wheel is connected to the saw blade shaft, and the main shaft of the eccentric wheel is connected to the handle housing shaft;

[0009] The eccentric shaft of the eccentric bevel gear is connected to the saw blade shaft, and the main shaft of the eccentric bevel gear is connected to the handle housing shaft;

[0010] The main bevel gear is connected to the output end of the reducer, and the main bevel gear is meshed and linked with the eccentric bevel gears in the two reciprocating saw blade assemblies respectively;

[0011] The input end of the reducer is connected to the rotating shaft of the motor, and the motor is electrically connected to the power supply.

[0012] According to the portable electric hand saw disclosed by the utility model, it is possible to avoid raising debris when cutting hard objects, thereby preventing the flying debris from injuring the user.

[0013] In addition, the portable electric hand saw proposed in the above embodiment of the utility model may also have the following additional technical features:

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 The structure of a portable electric hand saw according to an embodiment of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The structure of a portable electric hand saw according to an embodiment of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 The structure of a portable electric hand saw according to an embodiment of the utility model is shown in FIG. Figure 2 A magnified view of part A;

[0019] As shown in the figure:

[0020] 1- Reciprocating saw blade assembly;

[0021] 11-saw blade, 12-eccentric wheel, 13-eccentric bevel gear;

[0022] 2- Main bevel gear;

[0023] 3- reducer;

[0024] 4- Motor;

[0025] 5- Power supply;

[0026] 6-Handle housing. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The portable electric hand saw according to the present invention is described below with reference to the accompanying drawings;

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, a portable electric hand saw comprises: two reciprocating saw blade assemblies 1, a main bevel gear 2, a reducer 3, a motor 4, a power supply 5 and a handle housing 6, wherein the main bevel gear 2, the reducer 3, the motor 4 and the power supply 5 are respectively arranged on the handle housing 6, and the two reciprocating saw blade assemblies 1 are respectively arranged on the handle housing 6, wherein:

[0030] Each of the two reciprocating saw blade assemblies 1 comprises: a saw blade 11, an eccentric wheel 12 and an eccentric bevel gear 13. The saw blades 11 in the two reciprocating saw blade assemblies 1 are attached together, wherein:

[0031] One end of the saw blade 11, the eccentric wheel 12 and the eccentric bevel gear 13 are respectively arranged in the handle housing 6;

[0032] The eccentric shaft of the eccentric wheel 12 is connected to the axis of the saw blade 11, and the main shaft of the eccentric wheel 12 is connected to the axis of the handle housing 6;

[0033] The eccentric shaft of the eccentric bevel gear 13 is connected to the axis of the saw blade 11, and the main shaft of the eccentric bevel gear 13 is connected to the axis of the handle housing 6;

[0034] The main bevel gear 2 is connected to the output end of the reducer 3, and the main bevel gear 2 is meshed and linked with the eccentric bevel gears 13 in the two reciprocating saw blade assemblies 1 respectively;

[0035] The input end of the reducer 3 is connected to the rotating shaft of the motor 4 , and the motor 4 is electrically connected to the power source 5 .

[0036] In the embodiment of the utility model, the eccentric wheel 12 and the eccentric bevel gear 13 are used to drive the saw blade 11 to perform circular reciprocating motion, thereby ensuring that a large amount of debris is avoided when cutting hard objects;

[0037] Specifically, when the motor 4 drives the bevel gear 2 to rotate through the reducer 3, the bevel gear 2 drives the two eccentric bevel gears 13 in the two reciprocating saw blade assemblies 1 to rotate. At this time, the eccentric assisting gears 13 in the two reciprocating saw blade assemblies 1 start to rotate, and the eccentric shaft in the eccentric bevel gear 13 drives the saw blade 11 to perform circular reciprocating motion. At this time, the eccentric wheel 12 and the eccentric bevel gear 13 keep the saw blade 11 horizontal.

[0038] In summary, the portable electric hand saw disclosed in the embodiment of the utility model can avoid raising debris when cutting hard objects and thus avoid the flying debris from injuring the user.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A portable electric hand saw, characterized in that: include: Two reciprocating saw blade assemblies (1), a main bevel gear (2), a reducer (3), a motor (4), a power supply (5) and a handle housing (6), wherein the main bevel gear (2), the reducer (3), the motor (4) and the power supply (5) are respectively arranged on the handle housing (6), and the two reciprocating saw blade assemblies (1) are respectively arranged on the handle housing (6), wherein: Each of the two reciprocating saw blade assemblies (1) comprises: a saw blade (11), an eccentric wheel (12) and an eccentric bevel gear (13); the saw blades (11) in the two reciprocating saw blade assemblies (1) are attached together, wherein: One end of the saw blade (11), the eccentric wheel (12) and the eccentric bevel gear (13) are respectively arranged in the handle housing (6); The eccentric shaft of the eccentric wheel (12) is connected to the shaft of the saw blade (11), and the main shaft of the eccentric wheel (12) is connected to the shaft of the handle housing (6); The eccentric shaft of the eccentric bevel gear (13) is connected to the shaft of the saw blade (11), and the main shaft of the eccentric bevel gear (13) is connected to the shaft of the handle housing (6); The main bevel gear (2) is connected to the output end of the reducer (3), and the main bevel gear (2) is meshed and linked with the eccentric bevel gears (13) in the two reciprocating saw blade assemblies (1); The input end of the reducer (3) is connected to the rotating shaft of the motor (4), and the motor (4) is electrically connected to the power source (5).

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