Jig saw

Abstract

The utility model discloses a jig saw which comprises a shell, a reciprocating motion mechanism and a saw blade. The shell is provided with a mounting cavity. The reciprocating motion mechanism is arranged in the installation cavity and comprises a crank and a reciprocating shaft which are connected, and the crank is connected to the output end of the motor. The reciprocating shaft is arranged on the shell, the saw blade is connected to the reciprocating shaft, the motor drives the crank to drive the reciprocating shaft and the saw blade to move, the shell is provided with a positioning surface, the jig saw further comprises a bottom plate, the bottom plate is detachably connected to the shell and provided with a plurality of assembling surfaces, and the assembling surfaces are arranged at angles. When the bottom plate is connected to the shell, one of the multiple assembling faces is selected to be connected with the positioning face, the assembling faces make surface contact with the positioning face, and the different assembling faces are connected to the positioning face, so that the gestures of the jig saw are different. The technical scheme provided by the utility model has the advantages that the bottom plate can be mounted and positioned at multiple angles and is not easy to loosen.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool field, especially a kind of curve saw. BACKGROUND

[0002] Curve saw is a kind of power tool with saw blade reciprocating or swinging to saw various materials, which can effectively curve cut metal and wood.

[0003] Curve saw generally includes saw body and the bottom plate arranged below it, when normal working, bottom plate is easy to loosen, leading to unable normal work, need to stop screwing and fix bottom plate, then work again. Increase labor load, affect use feeling. At the same time, bottom plate is not easy to position when assembling, difficult to install. SUMMARY

[0004] The utility model discloses a kind of curve saws, to solve the problem of bottom plate assembling not easy to position, difficult to install and easy to loosen.

[0005] To achieve the above-mentioned purpose, the utility model provides curve saw, comprising:

[0006] Shell, provided with mounting cavity;

[0007] Reciprocating mechanism, arranged in the mounting cavity, the reciprocating mechanism includes a connecting crank and reciprocating shaft, the crank is connected to the output end of motor;

[0008] Saw blade, connected to the reciprocating shaft, the motor drives the crank to drive the reciprocating shaft and the saw blade movement, the shell is provided with positioning surface, the curve saw further includes bottom plate, the bottom plate is detachably connected to the shell, the bottom plate is provided with a plurality of assembly surfaces, a plurality of The assembly surface is arranged at an angle between the assembly surface;

[0009] Wherein, when the bottom plate is connected to the shell, a plurality of the assembly surface is selected to be in surface contact with the positioning surface, and different assembly surfaces are in surface contact with the positioning surface, so that the attitude of the curve saw is different.

[0010] Optionally, the bottom plate includes a support plate and a positioning plate, the positioning plate is arranged on the support plate, the positioning plate is detachably connected to the shell, and the top end of the positioning plate is provided with a plurality of assembly surfaces.

[0011] Optionally, the plurality of assembly surfaces of the bottom plate includes one plane and two inclined surfaces, one plane is located at the top end of the assembly surface, and two inclined surfaces are arranged on both sides of the plane.

[0012] Optionally, the included angle between the two inclined surfaces and the plane is equal.

[0013] Optionally, each assembly surface of the bottom plate is provided with a first through hole, the positioning surface of the shell is provided with a first threaded hole, and the positioning surface and the assembly surface are connected through a first fastener.

[0014] Optionally, the curved saw further comprises a locking element, the first threaded hole is arranged on the locking element, the shell is provided with a mounting groove, and the locking element is detachably connected to the mounting groove.

[0015] Optionally, the supporting plate and the positioning plate of the bottom plate are detachably connected.

[0016] Optionally, the supporting plate is provided with a second threaded hole, the positioning plate is provided with a second through hole, and the supporting plate and the positioning plate are connected through a second fastener.

[0017] Optionally, the bottom plate is further provided with a first avoiding space, and the first avoiding space is used for providing a saw blade movement space.

[0018] Optionally, the bottom plate is further provided with a second avoiding space, the second avoiding space is arranged on the supporting plate and adjacent to the positioning plate, and is used for providing a space for mounting or dismounting a bolt.

[0019] The utility model discloses a curved saw easy to position and assemble. The curved saw comprises a shell, a reciprocating mechanism and a saw blade. The shell is provided with a mounting cavity. The reciprocating mechanism is mounted in the mounting cavity. The crank of the reciprocating mechanism is connected to a motor. The saw blade is connected to the reciprocating shaft of the reciprocating mechanism. The reciprocating mechanism can convert the rotary motion of the motor into linear reciprocating motion, thereby driving the saw blade to reciprocate. The shell is further provided with a positioning surface. The curved saw further comprises a bottom plate. The bottom plate is detachably connected to the shell. The bottom plate is provided with a plurality of assembly surfaces. The assembly surfaces are arranged at an angle. When the bottom plate is connected to the shell, the assembly surfaces are selectively connected to the positioning surface. Different assembly surfaces connected to the positioning surface make the posture of the curved saw different. When the user assembles the bottom plate, the assembly surface and the positioning surface are in surface contact, which makes the contact between the bottom plate and the shell larger and the friction force greater. The relative position between the bottom plate and the shell is more stable during assembly, and it is not easy to deviate. During work, the surface contact has a greater friction force, which makes the connection between the bottom plate and the shell more stable and not easy to loosen. When the positioning surface is connected to the assembly surface in the horizontal direction, the bottom plate and the shell are arranged in parallel. When the positioning surface is connected to the assembly surface in the inclined direction, the bottom plate and the shell are arranged in an inclined manner. The multi-angle assembly surface facilitates the positioning and assembly of the bottom plate at different angles, and the curved saw can work normally at different angles. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] Figure 1 It is a whole schematic view of the curve saw of the present application.

[0022] Figure 2 It is an exploded schematic view of the curve saw of the present application.

[0023] Figure 3 It is a structural schematic view of the bottom plate structure of the present application.

[0024] Figure 4 It is a horizontal attitude schematic view of the curve saw of the present application.

[0025] Figure 5 It is a right turning attitude schematic view of the curve saw of the present application.

[0026] Figure 6 It is a left turning attitude schematic view of the curve saw of the present application.

[0027] Explanation of the drawing reference numerals:

[0028] 1, bottom plate; 11, positioning plate; 111, assembly surface; 1111, plane; 1112, inclined surface; 1113, first through hole; 112, second through hole; 12, support plate; 121, second threaded hole; 13, first avoiding space; 14, second avoiding space; 2, shell; 21, positioning surface; 211, first threaded hole; 22, locking element; 3, bolt.

[0029] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0033] In combination with Figure 1 , Figure 2 and Figure 3 , the present application proposes an embodiment, a curve saw, comprising a shell 2, a reciprocating mechanism and a saw blade. The shell 2 is provided with a mounting cavity. The reciprocating mechanism is arranged in the mounting cavity, and the reciprocating mechanism comprises a connecting crank and a reciprocating shaft, and the crank is connected to the output end of the motor. The saw blade is connected to the reciprocating shaft, and the motor drives the crank to drive the reciprocating shaft and the saw blade to move. The shell 2 is provided with a positioning surface 21, and the curve saw further comprises a bottom plate 1, which is detachably connected to the shell 2, and the bottom plate 1 is provided with a plurality of assembly surfaces 111, and the plurality of assembly surfaces 111 are arranged at an angle. Among them, when the bottom plate 1 is connected to the shell 2, the plurality of assembly surfaces 111 are selectively surface-fitted with the positioning surface 21, and when different assembly surfaces 111 are surface-fitted with the positioning surface 21, the attitude of the curve saw is different.

[0034] Specifically, the shell 2 is an outer shell that fits the overall shape of the curved saw, and the shell 2 is provided with a mounting cavity, and a reciprocating mechanism is arranged in the mounting cavity. The reciprocating mechanism includes a crank and a reciprocating shaft, wherein the crank is a cylindrical structure, and the crank is connected to the output end of the motor. Further, the output end of the motor is provided with a speed change gear set, and the crank is connected to the end face of the gear, and the motor drives the crank to make a circular motion. The reciprocating shaft is a rod structure and is slidingly connected in the mounting cavity, and the length direction of the reciprocating shaft is perpendicular to the length direction of the motor output shaft. A waist-shaped hole is provided in the reciprocating shaft, the width of the waist-shaped hole is adapted to the diameter of the crank, the length of the waist-shaped hole is greater than the diameter of the crank in circular motion, and the length direction of the waist-shaped hole, the length direction of the reciprocating shaft and the length direction of the motor output shaft are perpendicular to each other. The waist-shaped hole of the reciprocating shaft is sleeved on the crank, and one end of the reciprocating shaft is connected to the saw blade. When the motor rotates, it drives the crank to make a circular motion, and the crank slides in the waist-shaped hole while driving the reciprocating shaft to move, thereby driving the saw blade to make a reciprocating motion. The bottom of the shell 2 is provided with a positioning surface 21, which is a horizontally arranged plane 1111, which is convenient for connecting with the bottom plate 1, and can realize normal operation of the power tool at different angles according to the different assembly surfaces 111 of the connected bottom plate 1. The bottom plate 1 can be a metal material plane 1111 plate, and the top of the bottom plate 1 is provided with a plurality of assembly surfaces 111, each assembly surface 111 is a metal sheet with two ends connected end to end, each assembly surface 111 can be matched and connected with the positioning surface 21 of the shell 2, and according to the different assembly surfaces 111 of the positioning surface 21 matched with the bottom plate 1, the connection between the bottom plate 1 and the shell 2 at different angles can be realized, so that the entire power tool can normally operate in the horizontal direction or the inclined direction.

[0035] Further, the positioning surface 21 and the assembly surface 111 are surface matched, which can be understood that the surface matching makes the contact area of the positioning surface 21 and the assembly surface 111 large, and thus the position of the bottom plate 1 is not easy to deviate during installation.

[0036] Through the embodiment, the curved saw includes a shell 2 and a bottom plate 1, and the shell 2 is provided with a positioning surface 21. The bottom plate 1 is provided with a plurality of assembly surfaces 111, and the plurality of assembly surfaces 111 are arranged at an angle. Any assembly surface 111 can be matched with the positioning surface 21 to realize the connection between the shell 2 and the bottom plate 1 in the horizontal direction or in the inclined direction, so that the installation and positioning of the bottom plate 1 are more convenient, the assembly error of the bottom plate 1 is reduced, and the assembly efficiency of the bottom plate 1 is improved.

[0037] In combination with Figure 1 , Figure 2 and Figure 3 , an embodiment is provided, the bottom plate 1 includes a support plate 12 and a positioning plate 11, the positioning plate 11 is arranged on the support plate 12, the positioning plate 11 is detachably connected to the shell 2, and the top end of the positioning plate 11 is provided with a plurality of assembly surfaces 111.

[0038] Specifically, the bottom of the bottom plate 1 is provided with a support plate 12, the support plate 12 is a metal plate with a hollow structure in the middle, the upper part of the support plate 12 is connected with a positioning plate 11, the positioning plate 11 is a metal sheet bent into a bridge shape, the top end of the positioning plate 11 is provided with a plurality of assembly surfaces 111, each assembly surface 111 can be connected with and detached from the positioning surface 21 of the shell 2, when the bottom plate 1 is connected with the shell 2, the support plate 12 can be attached to the surface of the workpiece and support the entire power tool to run on the workpiece.

[0039] Further, the positioning plate 11 and the support plate 12 can be formed by one-piece stamping of the same plate material. They can also be formed by casting or injection molding. They can also be connected together by welding or the like.

[0040] Through the embodiment, the bottom plate 1 includes the support plate 12 and the positioning plate 11, the support plate 12 is located at the bottom of the bottom plate 1, the positioning plate 11 is located at the upper part of the support plate 12, the top end of the positioning plate 11 is provided with the assembly surface 111, the bottom plate 1 and the shell 2 are assembled together through the connection of the assembly surface 111 and the positioning surface 21, and in the use state, the entire power tool runs on the surface of the workpiece under the support of the bottom plate 1.

[0041] In combination with Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment, the plurality of assembly surfaces 111 of the bottom plate 1 includes a plane 1111 and two inclined surfaces 1112, a plane 1111 is located at the top end of the assembly surface 111, and two inclined surfaces 1112 are arranged on the two sides of the plane 1111.

[0042] Specifically, the positioning plate 11 of the bottom plate 1 is provided with a plurality of assembly surfaces 111, the assembly surface 111 arranged at the top end of the positioning plate 11 is a plane 1111, and the assembly surfaces 111 arranged on the two sides of the plane 1111 are two inclined surfaces 1112, when the assembly surface 111 arranged at the plane 1111 is attached to the positioning surface 21 of the shell 2, the entire power tool can reciprocate in the horizontal direction, and when the assembly surface 111 arranged at the inclined surface 1112 is connected with the positioning surface 21 of the shell 2, the entire power tool can run in the state of being inclined at a specific angle.

[0043] Further, the bottom of the shell 2 is provided with a groove, the bottom of the groove is the positioning surface 21, when the assembly surface 111 of the positioning plate 11 is connected to the positioning surface 21, the two sides of the groove abut against the other surfaces of the positioning plate 11.

[0044] Through the embodiment, the positioning plate 11 of the bottom plate 1 is provided with a plurality of assembly surfaces 111, including a plane 1111 located at the top end of the assembly surface 111 and two inclined surfaces 1112 located on the two sides of the assembly surface 111, so that the shell 2 and the bottom plate 1 can be connected at different angles.

[0045] In combination with Figure 4 , Figure 5 and Figure 6 , the utility model provides an embodiment, plane 1111 is parallel with the positioning surface 21 of shell 2 Setting, the mutual included angle between inclined surface 1112 and plane 1111 is obtuse angle or its supplementary angle.

[0046] Specifically, the assembly surface 111 set in plane 1111 can be connected with the positioning surface 21 of shell 2 in parallel, so that the bottom plate 1 is connected with the shell 2 in parallel. The mutual included angle between the plane 1111 and the inclined surface 1112 of the assembly surface 111 of the bottom plate 1 is 130° to 140° or its supplementary angle. When the mutual included angle between the plane 1111 and the inclined surface 1112 of the assembly surface 111 is 135°, the assembly surface 111 set in the inclined surface 1112 is connected with the positioning surface 21 of the shell 2, and the bottom plate 1 is connected with the shell 2 at an angle of 45°.

[0047] Through the embodiment, the plane 1111 of the assembly surface 111 of the bottom plate 1 is parallel with the positioning surface 21 of the shell 2, so that the bottom plate 1 can be connected with the shell 2 in parallel. When the inclined surface 1112 of the assembly surface 111 of the bottom plate 1 is connected with the positioning surface 21 of the shell 2, the bottom plate 1 and the shell 2 can be connected at a specific angle. The mutual included angle between the plane 1111 and the inclined surface 1112 of the assembly surface 111 of the bottom plate 1 is 130° to 140° or its supplementary angle.

[0048] In combination with Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment, every assembly surface 111 of bottom plate 1 is equipped with first through hole 1113, and the positioning surface 21 of shell 2 is equipped with first threaded hole 211, and the positioning surface 21 is connected with the assembly surface 111 through first fastener.

[0049] Specifically, every assembly surface 111 of the bottom plate 1 is equipped with the first through hole 1113, and the positioning surface 21 of the shell 2 is equipped with the first threaded hole 211. Every assembly surface 111 and the positioning surface 21 can be connected by the threaded hole structure set on each of them through the bolt 3, so as to connect the bottom plate 1 and the shell 2 with each other.

[0050] Through the embodiment, the threaded hole on the assembly surface 111 and the positioning surface 21 is set as the connection position of the bottom plate 1 and the shell 2. The bolt 3 passes through the threaded hole and is fastened and installed, so that the bottom plate 1 is installed on the shell 2.

[0051] In combination with Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment, the curved saw still includes locking element 22, first threaded hole 211 is located at locking element 22, the shell 2 is equipped with the mounting groove, locking element 22 can be detachably connected in the mounting groove.

[0052] Specifically, the curved saw still includes locking element 22 and bolt 3, first threaded hole 211 is located at locking element 22, the bottom of shell 2 is equipped with the mounting groove, locking element 22 can be detachably connected in the mounting groove, bolt 3 can be bolt 3.When locking element 22 is connected in the mounting groove, bolt 3 passes through the threaded hole of the positioning plate 11 of bottom plate 1, is fastened together with locking element 22, makes bottom plate 1 and shell 2 closely connect, reaches bottom plate 1 and is not easy to come off.

[0053] Through this embodiment, the curved saw still is equipped with locking element 22, locking element 22 is detachably connected in the mounting groove, so that locking element 22 can be replaced, adapts multiple first threaded hole 211, when locking element 22 is connected in the mounting groove, bottom plate 1 can be connected with shell 2 by locking element 22, reaches bottom plate 1 and is not easy to come off effect.

[0054] In combination with Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment, the support plate 12 of bottom plate 1 and positioning plate 11 can be detachably connected.

[0055] Specifically, the bottom of bottom plate 1 is equipped with support plate 12, the upper portion of bottom plate 1 is equipped with positioning plate 11, support plate 12 and positioning plate 11 can be connected with each other, and the two can also be split.

[0056] Through this embodiment, the support plate 12 of bottom plate 1 and positioning plate 11 can be connected or detached, which is convenient for processing in different positions and also facilitates replacement after a certain structure is damaged.

[0057] In combination with Figure 1 , Figure 2 and Figure 3 , the utility model provides an embodiment, support plate 12 is equipped with second threaded hole 121, positioning plate 11 is equipped with second through hole 112, and support plate 12 and positioning plate 11 are connected through second fastener.

[0058] Through this embodiment, the support plate 12 of bottom plate 1 and positioning plate 11 are all equipped with threaded hole, and bolt 3 can be used to pass through the threaded hole to connect or detach the support plate 12 and the positioning plate 11.

[0059] In combination with Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment, bottom plate 1 still is equipped with first avoiding space 13 and second avoiding space 14, first avoiding space 13 is used to provide saw blade movement space, second avoiding space 14 is located support plate 12 and is adjacent to the positioning plate 11 setting, is used to provide the space of installation or disassembly bolt 3.

[0060] Specifically, the bottom of the bottom plate 1 is provided with a first avoiding space 13, which allows the bottom plate 1 to avoid the saw blade, providing a power tool working space. The support plate 12 of the bottom plate 1 is also provided with a second avoiding space 14 adjacent to the positioning plate 11. In the second avoiding space 14, the installation or disassembly of the bolt 3 can be completed. The screwdriver can extend into the second avoiding space 14. The bolt 3 passes through the threaded hole to connect the assembly surface 111 and the positioning surface 21 together, so that the bottom plate 1 and the shell 2 can be connected or disassembled.

[0061] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the utility model concept and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A jigsaw comprising: The housing, the motor mounted on the housing, the reciprocating mechanism connected to the output end of the motor, and the bottom plate detachably connected to the housing, the reciprocating mechanism has a crank connected to the output end of the motor and a reciprocating shaft connected to the crank, and the motor drives the crank to drive the reciprocating shaft to move; characterized in that the bottom plate is provided with a plurality of assembly surfaces, a plurality of assembly surfaces are arranged at an angle, and the housing is provided with a positioning surface; Wherein, when the bottom plate is connected to the housing, a plurality of assembly surfaces are selected to be in surface contact with the positioning surface, and different assembly surfaces are in surface contact with the positioning surface, so that the attitude of the curve saw is different.

2. A jigsaw according to claim 1, characterized in that The plurality of assembly surfaces of the bottom plate include one plane and two inclined surfaces, one plane is located at the top end of the assembly surface, and two inclined surfaces are arranged on both sides of the plane.

3. A jigsaw according to claim 2, characterized in that The included angle between the two inclined surfaces and the plane is equal.

4. A jigsaw according to claim 2, characterized in that Any assembly surface of the bottom plate is provided with a first through hole, the positioning surface of the housing is provided with a first threaded hole, and the positioning surface and the assembly surface are connected by a first fastener.

5. A jigsaw according to claim 4, characterized in that The curve saw further comprises a locking element, the first threaded hole is arranged in the locking element, the housing is provided with a mounting groove, and the locking element is detachably connected to the mounting groove.

6. A curve saw according to claim 1, characterized in that The bottom plate comprises a support plate and a positioning plate, the positioning plate is arranged on the support plate, the positioning plate is detachably connected to the housing, and the top end of the positioning plate is provided with a plurality of assembly surfaces.

7. A curve saw according to claim 1, characterized in that The support plate and the positioning plate of the bottom plate are detachably connected.

8. A jigsaw according to claim 7, characterized in that The support plate is provided with a second threaded hole, the positioning plate is provided with a second through hole, and the support plate and the positioning plate are connected by a second fastener.

9. A curve saw according to claim 1, characterized in that The bottom plate is further provided with a first avoiding space, and the first avoiding space is used to provide a saw blade movement space.

10. A jigsaw according to claim 6, characterized in that The bottom plate is further provided with a second avoiding space, the second avoiding space is arranged on the support plate and adjacent to the positioning plate, and is used to provide a space for mounting or dismounting bolts.

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