An electric tool

Abstract

The embodiment of the present invention provides an electric tool, comprising: a functional head; a power head, arranged at one side of the functional head, drivingly connected to the functional head; a quick-detachment device, arranged between the power head and the functional head; wherein the power head is detachably connected to the functional head via the quick-detachment device. The present invention solves the technical problem that the existing electric tool is an integrated structure and is not convenient for replacing the functional head.

Description

Technical Field

[0001] The present invention relates to the technical field of electric equipment, and in particular to an electric tool. Background Art

[0002] As an electric cutting tool, electric saw is mainly used to cut wood, stone, certain metal materials, etc. It is an important electric tool with a wide range of applications. Handheld electric saws are increasingly favored by construction workers because of their advantages such as easy portability, ease of operation, and great flexibility.

[0003] However, the existing electric tools are of an integrated structure, and the power head and the functional head are fixedly connected together by multiple threaded connectors, which is not easy to disassemble. When multiple electric tools are needed for construction work, multiple electric tools need to be purchased, which increases the construction cost. Summary of the invention

[0004] In order to solve the problem that the existing electric tools are of an integrated structure, the present invention provides an electric tool, comprising: a functional head; a power head, arranged on one side of the functional head, drivingly connected to the functional head; a quick release device, arranged between the power head and the functional head; wherein the power head is detachably connected to the functional head via the quick release device.

[0005] Compared with the prior art, the technical effect that can be achieved by this embodiment is: since a quick-detachment device is provided between the functional head and the power head, when multiple electric tools are required for construction operations, only one power head needs to be configured, and then the power head is matched with different functional heads through the quick-detachment device to provide driving force for multiple power heads, thereby improving the applicability of the power head and reducing the construction operation cost.

[0006] In one embodiment of the present invention, the quick-disassembly device includes: a function installation portion, which is arranged on a side of the power head close to the function head; and a drive installation portion, which is arranged on the function head and is detachably connected to the function installation portion.

[0007] Compared with the prior art, the technical effect that can be achieved by this embodiment is: through the coordinated installation of the functional installation part and the drive installation part, the power head and the functional head can be quickly disassembled and installed.

[0008] In one embodiment of the present invention, the functional installation portion is provided with a snap-in position, and the drive installation portion is provided with a corresponding snap-in portion, and the snap-in portion can extend into or out of the snap-in position.

[0009] Compared with the prior art, the technical effect achieved by this embodiment is that the power head and the functional head can be quickly disassembled and installed by the matching installation of the clamping position and the clamping part. When the power head needs to be disassembled, the clamping part can be withdrawn from the clamping position to separate the power head from the functional head; when the power head needs to be installed, the clamping part can be extended into the clamping groove to fix the power head to the power input side of the functional head.

[0010] In one embodiment of the present invention, the engaging position is a through slot provided on the functional mounting portion.

[0011] Compared with the prior art, the technical effect that can be achieved by this embodiment is that since the engaging position is a through slot arranged on the functional mounting portion, the engaging portion can be extended into or withdrawn from one side of the through slot during the disassembly and installation process.

[0012] In one embodiment of the present invention, the drive installation part includes: a drive installation body, which is provided with a drive accommodating space inside; and a clamping part, which is rotatably arranged on the drive installation body.

[0013] Compared with the prior art, the technical effect that can be achieved by this embodiment is that the clamping part is rotatably arranged on the driving installation part through the driving installation body; since a driving installation space is arranged inside the driving installation body, when the driving installation part and the functional installation part are installed in coordination, the functional installation part can be arranged in the driving installation space, and then the clamping part can be rotated to the clamping position to complete the assembly.

[0014] In one embodiment of the present invention, the clamping portion includes: a pulling end, which is arranged at an end of the clamping portion away from the clamping position; a clamping end, which is arranged at an end of the clamping portion close to the clamping position; and a clamping boss, which is arranged on one side of the clamping portion and extends in a direction away from the clamping portion.

[0015] Compared with the prior art, the technical effect that can be achieved by this embodiment is: the clamping part is clamped in the clamping position by the clamping boss; the clamping end can be driven to rotate by rotating the pull end to screw the clamping boss into or out of the clamping position, thereby realizing the assembly and disassembly of the power head and the functional head.

[0016] In one embodiment of the present invention, the quick-disassembly device further comprises: a locking portion, which is arranged on a side of the pulling end close to the clamping end and is used to lock the clamping portion.

[0017] Compared with the prior art, the technical effect that can be achieved by this embodiment is: since a locking part is provided on the side of the pull end close to the clamping end, the clamping part can be locked after the power head and the functional head are assembled, thereby avoiding the problem of accidental touching of the clamping part during operation, causing the clamping part to be rotated out of the clamping position and affecting the normal cutting operation of the power tool, thereby improving the installation firmness of the power tool and ensuring the operating stability of the power tool.

[0018] In one embodiment of the present invention, the locking portion includes: a first locking piece, rotatably arranged on a side of the pulling end close to the clamping end, and provided with a hook; a second locking piece, arranged on a side of the first locking piece, and provided with an extension plate; wherein, when the pulling end is locked, the extension plate is clamped in the hook.

[0019] Compared with the prior art, the technical effect that can be achieved by this embodiment is: the locking part is set in the form of a first locking part and a second locking part. When the functional mounting part and the drive mounting part are assembled, the protruding plate of the second locking part can be set in the lock hook of the first locking part, so that the clamping part can be locked, avoiding the problem that the construction personnel accidentally rotate the clamping part out of the clamping position, causing the power head to fall off the functional head.

[0020] In one embodiment of the present invention, the electric tool further comprises: at least one first positioning portion, which is arranged on the functional mounting portion; and a second positioning portion, which is arranged on the drive mounting portion and is installed in cooperation with the first positioning portion.

[0021] Compared with the prior art, the technical effect that can be achieved by this embodiment is: through the coordinated installation of the first positioning portion and the second positioning portion, the functional mounting portion and the drive mounting portion are pre-positioned, the alignment time is reduced, and the installation efficiency is improved.

[0022] In one embodiment of the present invention, the first positioning portion is a positioning boss, and the second positioning portion is a positioning plate. When the power head and the functional head are installed in cooperation, the positioning boss is installed into the drive mounting portion along the length direction of the positioning plate.

[0023] Compared with the prior art, the technical effect achieved by this embodiment is that during the assembly process, the positioning boss can be slid in along the length direction of the positioning plate to guide the assembly between the functional mounting portion and the drive mounting portion, thereby improving the assembly efficiency. By providing multiple positioning bosses, the power head can be firmly limited to the positioning groove.

[0024] In summary, the above embodiments of the present application may have one or more of the following advantages or beneficial effects:

[0025] (1) Since a quick-disassembly device is provided between the functional head and the power head, when multiple power tools are required for construction, only one power head needs to be configured, and then the power head can be matched with different functional heads through the quick-disassembly device to provide driving force for multiple power heads, thereby improving the applicability of the power head and reducing the construction cost.

[0026] (2) The power head and the functional head can be quickly disassembled and installed by the matching installation of the clamping position and the clamping part. When the power head needs to be disassembled, the clamping part can be withdrawn from the clamping position to separate the power head from the functional head; when the power head needs to be installed, the clamping part can be extended into the clamping groove to fix the power head to the power input side of the functional head.

[0027] (3) Since a locking part is provided on the side of the trigger end close to the clamping end, the clamping part can be locked after the power head and the functional head are assembled, thereby avoiding the problem of accidentally touching the clamping part during operation, causing the clamping part to be rotated out of the clamping position and affecting the normal cutting operation of the power tool. The installation firmness of the power tool is improved and the operating stability of the power tool is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 4 is a schematic diagram of the structure of an electric tool 400 provided in an embodiment of the present invention.

[0030] Figure 2 for Figure 1 A schematic structural diagram of the power head 200.

[0031] Figure 3 for Figure 1 Schematic diagram of the structure of the medium function head 100.

[0032] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0033] Figure 5 for Figure 1 FIG. 4 is a schematic diagram of the structure of the electric tool 400 from another perspective.

[0034] Figure 6 for Figure 5 BB cross-sectional view of the electric tool 400.

[0035] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0036] Description of main component symbols:

[0037] 100, functional head; 200, power head; 300, quick disassembly device; 310, functional mounting part; 311, snap-fit ​​position; 312, first positioning part; 320, drive mounting part; 330, drive mounting body; 331, drive accommodating space; 332, second positioning part; 340, snap-fit ​​part; 341, pull end; 342, snap-fit ​​end; 343, snap-fit ​​boss; 350, locking part; 351, first locking piece; 352, second locking piece; 353, hook; 354, extension plate; 355, second rotating shaft; 360, first rotating shaft; 400, power tool. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 , which is a schematic diagram of the structure of an electric tool 400 provided in an embodiment of the present invention. The electric tool 400, for example, includes: a functional head 100, a power head 200, and a quick release device 300. The power head 200 is arranged on one side of the functional head 100, and is driven to connect the functional head 100; the quick release device 300 is arranged between the functional head 100 and the power head 200. Specifically, the power head 200 is detachably arranged on the functional head 100 through the quick release device 300.

[0040] In a specific embodiment, the power head 200 can be quickly installed on various types of functional heads 100 through the quick disassembly device 300 according to actual operation needs, that is, one power head 200 can be used with multiple functional heads 100, thereby further reducing the equipment investment cost of the cutting operation. For example, the functional head 100 can be a reciprocating saw, or a jigsaw, a miter saw, or other electric equipment, which is not limited here.

[0041] In addition, when the power head 200 fails or is damaged, the power head 200 can be quickly removed from the driving force input end of the functional head 100 through the quick disassembly device 300 to repair or replace the power head 200; and then the fault-free power head 200 can be quickly assembled to the functional head 100 through the quick disassembly device 300 to continue the cutting operation. There is no need to replace the entire power tool 400 like an integrated electric saw, thereby reducing the equipment investment cost of the construction operation.

[0042] Further, combined with Figures 2 to 4 , the quick disassembly device 300 includes, for example: a function mounting portion 310 and a drive mounting portion 320. Among them, the function mounting portion 310 is arranged on the side of the power head 200 close to the function head 100; the drive mounting portion 320 is arranged on the driving force input side of the function head 100. Specifically, the function mounting portion 310 and the drive mounting portion 320 are detachably connected. For example, the detachable connection between the function mounting portion 310 and the drive mounting portion 320 can be achieved by matching a slide groove with a slider, matching a card slot with a buckle, or matching a socket with a plug, which is not limited here.

[0043] In a specific example, the function installation part 310 is provided with a clamping position 311, and the drive installation part 320 is provided with a corresponding clamping part 340. The drive installation part 320 can extend into or out of the clamping position 311 through the clamping part 340. For example, when the power head 200 fails and is damaged, the lock between the function installation part 310 and the drive installation part 320 can be released by controlling the clamping part 340 to withdraw from the clamping position 311, so that the power head 200 can be quickly removed from the driving force input end of the function head 100, and the power head 200 can be repaired or replaced; when the failure of the power head 200 is eliminated, the function installation part 310 and the drive installation part 320 can be locked by controlling the clamping part 340 to extend into the clamping position 311, so that the repaired or replaced power head 200 can be quickly assembled to the driving force input end of the function head 100.

[0044] Preferably, the plane where the rotation direction of the clamping portion 340 lies is substantially perpendicular to the direction in which the power head 200 and the functional head 100 are connected.

[0045] Preferably, the engaging position 311 is a through slot provided on the functional mounting portion 310. In the production process of parts, this form of design is convenient for processing and manufacturing.

[0046] Further, the drive installation part 320 includes, for example, a drive installation body 330, a clamping part 340 and a first rotating shaft 360. The drive installation body 330 is provided with a drive accommodating space 331; the clamping part 340 is rotatably arranged on the drive installation body 330 through the first rotating shaft 360. Specifically, when the function installation part 310 and the drive installation part 320 are installed in coordination, the function installation part 310 is arranged in the drive accommodating space 331; the clamping part 340 can be rotated into or out of the clamping position 311 from one side of the clamping position 311 with the first rotating shaft 360 as an axis.

[0047] Further, combined with Figure 7 The clamping portion 340 includes, for example, a pull end 341, a clamping end 342, and a clamping boss 343. The pull end 341 is disposed on a side of the clamping portion 340 away from the clamping position 311; the clamping end 342 is disposed on a side of the clamping portion 340 close to the clamping position 311; the first rotating shaft 360 is located between the pull end 341 and the clamping end 342; the clamping boss 343 is disposed at the clamping end 342 and extends in a direction away from the clamping end 342. Specifically, the pull end 341 can drive the clamping end 342 to rotate clockwise or counterclockwise around the first rotating shaft 360, thereby driving the clamping boss 343 to rotate in or out of the clamping position 311.

[0048] In a specific embodiment, Figure 3 When the power head 200 fails and is damaged, the clamping end 342 can be driven by the pulling end 341 to rotate counterclockwise around the first rotating shaft 360, so that the clamping boss 343 is rotated out of the clamping position 311 to release the lock between the function mounting part 310 and the drive mounting part 320, and then the function mounting part 310 is taken out from the drive accommodating space 331 to remove the power head 200 from the function head 100 for repair or replacement; when the failure of the power head 200 is rectified, the function mounting part 310 can be inserted into the drive accommodating space 331, and then the clamping end 342 can be driven by the pulling end 341 to rotate clockwise around the first rotating shaft 360, so that the clamping boss 343 is screwed into the clamping position 311 to complete the lock between the function mounting part 310 and the drive mounting part 320, and the power head 200 is firmly installed on the function head 100.

[0049] Preferably, the quick disassembly device 300, for example, further includes: a locking portion 350. The locking portion 350 is disposed between the pull end 341 and the clamping end 342, and is used to lock the clamping portion 340. Specifically, a corresponding installation groove is provided on the clamping portion 340, and the locking portion 350 is embedded in the installation groove. By providing the locking portion 350 on the quick disassembly device 300, it is possible to avoid the problem of accidentally touching the clamping portion 340 during the construction work, causing the clamping boss 343 to be screwed out of the clamping position 311, so that the power head 200 falls off from the functional head 100, thereby ensuring the assembly firmness between the power head 200 and the functional head 100, and further ensuring the operating stability of the electric tool 400.

[0050] Further, combined with Figure 5 and Figure 6 The locking part 350 includes, for example, a first locking member 351, a second locking member 352, and a second rotating shaft 355. The first locking member 351 is rotatably disposed between the pull end 341 and the clamping end 342 via the second rotating shaft 355, and a hook 353 is disposed on the first locking member 351; the second locking member 352 is fixedly disposed on one side of the first locking member 351, and a protruding plate 354 is disposed on the second locking member 352. Specifically, when the protruding plate 354 is clamped in the hook 353, the pull end 341 is locked.

[0051] In a specific embodiment, after the locking boss 343 is screwed into the locking position 311, the first locking piece 351 can be rotated clockwise with the second rotating shaft 355 as the axis, thereby driving the hook 353 to rotate in the direction close to the protruding plate 354, until the protruding plate 354 is locked in the hook 353, and the locking of the locking portion 340 is completed; when it is necessary to disassemble the power head 200, first rotate the first locking piece 351 counterclockwise with the second rotating shaft 355 as the axis, thereby driving the hook 353 to rotate in the direction away from the protruding plate 354, until the protruding plate 354 is disengaged from the hook 353, and the locking of the locking portion 340 is released, and then the locking boss 343 can be screwed out from the locking position 311.

[0052] The locking portion 350 is configured to cooperate with a first locking member 351 and a second locking member 352. When the functional mounting portion 310 and the drive mounting portion 320 are assembled, the lever end 341 of the clamping portion 340 can be locked by the matching installation between the hook 353 on the first locking member 351 and the protruding plate 354 on the second locking member 352, thereby preventing construction personnel from accidentally touching the lever end 341 during operation, causing the clamping boss 343 to be rotated out of the clamping position 311, resulting in the power head 100 falling off from the functional head 200.

[0053] Furthermore, a torsion spring is provided inside the first locking member 351. Due to the rebound force of the torsion spring, the first locking member 351 always tends to rotate clockwise with the second rotating shaft 355 as the axis without the influence of external force, so that the upper end surface of the hook 353 is always in close contact with the lower end surface of the extension plate 354. Only when a certain degree of force is continuously applied to the first locking member 351, the first locking member 351 can be rotated counterclockwise with the second rotating shaft 355 as the axis, so that the extension plate 354 and the hook 353 are separated. If it is just an accidental touch and the first locking member 351 is slightly pressed, the rebound force of the torsion spring will quickly drive the first locking member 351 to reset, and the extension plate 354 and the hook 353 will not be separated from each other.

[0054] Furthermore, an elastic gasket is provided at the bottom of the clamping end 342. One end of the elastic gasket is fixedly arranged on the second locking member 352 and is located below the extended plate 354; the other end of the elastic gasket is provided with a U-shaped groove, the upper end surface of the U-shaped groove is always in close contact with the lower end surface of the clamping end 342, and the clamping boss 343 is arranged in the U-shaped groove. Specifically, the length of the clamping boss 343 is greater than the thickness of the elastic gasket, so the clamping boss 343 can extend out of the U-shaped groove and be clamped in the clamping position 311.

[0055] By providing the elastic gasket at the bottom of the clamping end 342, on the one hand, when the clamping portion 340 rotates, the lower end surface of the clamping end 342 can be prevented from directly contacting the upper end surface of the clamping position 11, thereby reducing the wear of the lower end surface of the clamping end 342 (the material of the clamping end 342 is plastic, and the material of the clamping position 11 is metal), thereby increasing the service life of the clamping end 342. On the other hand, the elastic gasket can provide an upward rebound force to the lower end surface of the clamping end 342. When the pull end 341 is rotated counterclockwise around the first rotating shaft 360 to rotate the clamping boss 343 out of the clamping position 311, the rebound force can support the lower end surface of the clamping end 342, thereby preventing the pull end 341 from rotating clockwise around the first rotating shaft 360 and falling due to the action of gravity.

[0056] Furthermore, the electric tool 400, for example, also includes: a first positioning portion 312 and a second positioning portion 332. Among them, at least one first positioning portion 312 is arranged on the functional mounting portion 310; the second positioning portion 332 is arranged on the drive mounting portion 320, and is installed in cooperation with the first positioning portion 312. Specifically, the second positioning portion 332 is arranged in the drive accommodating space 331. By providing the first positioning portion 312 and the second positioning portion 332, the cooperative installation between the functional mounting portion 310 and the drive mounting portion 320 can be pre-positioned, thereby reducing the time for alignment and improving the installation speed and efficiency of the power head 100, and realizing the rapid disassembly and assembly between the power head 100 and the functional head 200.

[0057] In a specific embodiment, the first positioning portion 312 is a positioning boss, and the second positioning portion 332 is a positioning plate. When the functional head 100 and the power head 200 are installed in cooperation, the positioning boss is installed into the drive mounting portion 320 along the length direction of the positioning plate.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power tool, It is characterized in that include: Functional Header; A power head, arranged on one side of the functional head, drivingly connected to the functional head; A quick disassembly device, arranged between the power head and the functional head; Wherein, the power head is detachably connected to the functional head via the quick-detachment device; The quick disassembly device comprises: A function installation portion is arranged on a side of the power head close to the function head; A drive mounting portion, disposed on the functional head and detachably connected to the functional mounting portion; The functional installation part is provided with a clamping position, and the drive installation part is provided with a corresponding clamping part, and the clamping part can extend into or withdraw from the clamping position; The engaging position is a through slot provided on the functional mounting portion; The plane where the rotation direction of the clamping portion is located is substantially perpendicular to the direction in which the power head is connected to the functional head; The drive installation unit comprises: A drive mounting body, with a drive accommodation space inside; The clamping portion is rotatably arranged on the drive mounting body; The clamping portion comprises: The pull end is arranged at an end of the clamping portion away from the clamping position; A clamping end, arranged at one end of the clamping portion close to the clamping position; A clamping boss is disposed on the clamping end and extends in a direction away from the clamping end; The quick disassembly device also includes: A locking portion, disposed between the pulling end and the clamping end, and used to lock the clamping portion; The locking portion comprises: A first locking member is rotatably disposed between the pull end and the clamping end and is provided with a clamping hook; A second locking member, fixedly disposed on one side of the first locking member, and provided with a protruding plate; Wherein, when the protruding plate is clamped in the hook, the pulling end is locked.

2. The electric tool according to claim 1, It is characterized in that The electric tool further comprises: At least one first positioning portion, disposed on the functional mounting portion; The second positioning portion is arranged on the drive mounting portion and is installed in cooperation with the first positioning portion.

3. The electric tool according to claim 2, It is characterized in that The first positioning portion is a positioning boss, and the second positioning portion is a positioning plate. When the power head and the functional head are mounted in cooperation, the positioning boss is installed into the drive mounting portion along the length direction of the positioning plate.

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