Multifunctional tool

Abstract

The utility model provides a multifunctional tool, and relates to the technical field of electric tools. A multi-functional tool comprising: a drive system; the driving shaft is connected with the driving system; the flange plate is fixed at the bottom of the driving shaft; the mandrel is arranged in the driving shaft, and a pressing plate is arranged at the bottom of the mandrel; the resetting piece is arranged on the mandrel in a sleeving manner; the rotating piece is arranged above the mandrel and abuts against the top of the mandrel; wherein the rotating piece is rotated, the mandrel moves downwards, the pressing plate is far away from the flange plate and used for replacing the tool accessory, the rotating piece is rotated in the opposite direction after replacement is completed, the mandrel is reset under the action of the reset piece, and the tool accessory is pressed on the flange plate through the pressing plate. The rotating piece is arranged to drive the mandrel to move up and down in the vertical direction, so that clamping and loosening of the tool accessory are achieved, operation is easy, the tool accessory replacing speed is high, and the clamping effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a multifunctional tool. Background Art

[0002] Multi-function tools, also known as swing tools or oscillating tools, are efficient and convenient handheld electric devices. They use a built-in high-torque motor to drive the working head to operate in a high-speed reciprocating swing. This unique power transmission mechanism enables the tool to replace the corresponding working accessories in different application scenarios to achieve a variety of operating functions. The working head usually swings at a high speed of thousands or even tens of thousands of times per minute, thus ensuring the accuracy and work efficiency of various operations such as cutting, grinding, rust removal, and grooving.

[0003] Common multi-functional tools can be equipped with a wide variety of tool accessories, such as saw blades that can be used to cut wood, plastic, metal and other materials; grinding discs that are suitable for grinding irregular surfaces, removing excess coatings or polishing; and scrapers that are used to clean tile gaps and remove old paint layers. These tools are widely used in many industries such as construction, home DIY, auto repair, and pipeline installation due to their flexibility and portability, greatly improving work efficiency and practicality.

[0004] Multi-function tools often need to replace tool accessories, so it is necessary to develop a multi-function tool with fast accessory replacement speed, good clamping effect, compact structure and small space occupation. Summary of the invention

[0005] The purpose of the utility model is to propose a multifunctional tool in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a multifunctional tool, characterized in that it includes:

[0007] Drive system;

[0008] a drive shaft connected to the drive system;

[0009] A flange, the flange being fixed to the bottom of the driving shaft;

[0010] A spindle, the spindle is arranged in the driving shaft, and a pressing plate is arranged at the bottom of the spindle;

[0011] A reset member, the reset member is sleeved on the spindle;

[0012] A rotating member, the rotating member is arranged above the spindle and abuts against the top of the spindle;

[0013] Among them, by rotating the rotating part, the spindle moves downward, and the pressure plate moves away from the flange, which is used to replace the tool accessory. After the replacement is completed, the rotating part is rotated in the opposite direction, the spindle is reset under the action of the reset part, and the pressure plate presses the tool accessory onto the flange.

[0014] As a further improvement of the utility model, the spindle includes a connected locking shaft and a pull rod, one end of the locking shaft abuts against the rotating member, and the other end of the locking shaft is provided with a slot, and the pull rod is inserted into the slot.

[0015] As a further improvement of the utility model, the spindle also includes a locking piece, a connecting portion is provided on one end of the pull rod close to the slot, a locking hole is provided on the side of the slot, the locking piece is partially provided in the locking hole and abuts against the connecting portion, the reset piece is sleeved on the pull rod, one end of the reset piece abuts against the flange, and the other end of the reset piece abuts against the locking piece.

[0016] As a further improvement of the present invention, the rotating member rotates around a rotation axis, the driving shaft rotates around the driving axis, and the rotation axis is parallel to the driving axis.

[0017] As a further improvement of the present invention, a driving groove is provided on the side of the rotating member, the depth of the driving groove changes continuously along the circumference of the rotating member, and the locking shaft abuts against the bottom surface of the driving groove.

[0018] As a further improvement of the utility model, it further comprises an operating member, a connecting rod is arranged on the top of the rotating member, the operating member is arranged on the connecting rod, and the operating member is rotated, so that the operating member drives the rotating member to rotate.

[0019] As a further improvement of the present invention, a plurality of flanges are arranged on the flange surface of the flange plate, the flanges are evenly distributed on the flange surface along the circumferential direction, and the tool accessories are pressed against the flanges.

[0020] As a further improvement of the utility model, the driving system includes a motor, an eccentric assembly and a shift fork, the eccentric assembly is arranged on the output shaft of the motor, one end of the shift fork is sleeved on the driving shaft, and the other end of the shift fork is against the eccentric assembly.

[0021] As a further improvement of the present invention, the eccentric assembly includes an eccentric shaft, a counterweight and a bearing. The eccentric shaft is sleeved on the output shaft of the motor. The eccentric shaft is provided with a first step surface and a second step surface. The bearing is sleeved on the first step surface, and the counterweight is sleeved on the second step surface.

[0022] As a further improvement of the utility model, it also includes a shell assembly, which includes a head shell, a bottom shell and a front box body. The drive shaft, flange, rotating parts and part of the drive system are arranged in the front box body, and the head shell and the bottom shell at least partially surround the front box body.

[0023] Based on the above technical solution, the utility model can at least produce the following technical effects:

[0024] 1. The rotating part is set to drive the spindle to move up and down in the vertical direction, so as to realize the clamping and loosening of the tool accessories. The operation is simple, the tool accessories can be replaced quickly, and the clamping effect is good.

[0025] 2. By setting the mandrel separately, the mandrel is divided into two parts: a locking shaft and a pull rod. The length of each part is greatly reduced compared to an integrated mandrel, thereby reducing the processing difficulty and cost.

[0026] 3. By arranging a driving groove with a continuously changing depth along the circumferential direction on the outer edge of the rotating part, the movement of the spindle can be controlled when the rotating part rotates.

[0027] 4. By setting the rotation axis parallel to the driving axis, the structure of the utility model is more compact and the layout is simpler.

[0028] 5. By setting the tool accessories to be pressed on the flange, the clamping effect of the tool accessories is better. Compared with the technical solution of clamping on the flange surface, the clamping force can be smaller.

[0029] 6. By setting a counterweight on the eccentric shaft, the vibration frequency and amplitude of the multi-function tool can be affected according to the size, shape and eccentric distance of the counterweight, thereby determining the working efficiency and application range of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the multifunctional tool of the utility model.

[0031] Figure 2 It is a top view of the multifunctional tool of the utility model.

[0032] Figure 3 yes Figure 2 AA section view.

[0033] Figure 4 It is a schematic diagram of the multifunctional tool of the utility model after removing the shell component.

[0034] Figure 5 yes Figure 4 Schematic diagram after removing the front box and battery pack.

[0035] Figure 6It is a schematic diagram of the central axis and flange of the multifunctional tool of the utility model.

[0036] Figure 7 It is a schematic diagram of a rotating part in the multifunctional tool of the utility model.

[0037] In the figure, 100, drive system; 110, motor; 120, eccentric shaft; 121, first step surface; 122, second step surface; 130, counterweight; 140, bearing; 150, fork; 200, drive shaft; 300, flange; 310, flange; 400, spindle; 410, locking shaft; 411, slot; 412, locking hole; 420, pull rod; 421, connecting part; 422, pressure plate; 430, locking member; 500, reset member; 600, rotating member; 610, driving groove; 620, connecting rod; 700, operating member; 800, shell assembly; 810, head shell; 820, bottom shell; 830, front box; 900, tool accessory; L1, rotation axis; L2, driving axis. DETAILED DESCRIPTION

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, in the utility model, the descriptions such as "first", "second", "one", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. In the utility model, unless otherwise clearly defined and defined, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. In addition, the technical solutions between the various embodiments of the utility model can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0039] The following are specific embodiments of the present invention, and Figure 1-7 , the technical solution of the utility model is further described, but the utility model is not limited to the following embodiments.

[0040] A multifunctional tool comprises: a driving system 100, a driving shaft 200, a flange 300, a spindle 400, a reset member 500 and a rotating member 600, wherein the driving shaft 200 is connected to the driving system 100, the flange 300 is fixed to the bottom of the driving shaft 200, the spindle 400 is arranged in the driving shaft 200, a pressing plate 422 is arranged at the bottom of the spindle 400, the reset member 500 is sleeved on the spindle 400, and the rotating member 600 is arranged above the spindle 400 and abuts against the top of the spindle 400. The rotating member 600 is rotated, the spindle 400 moves downward, the pressing plate 422 moves away from the flange 300, and the pressing plate 422 releases the tool attachment 900 for replacing the tool attachment 900. After the replacement is completed, the rotating member 600 is rotated in the opposite direction, the spindle 400 is reset under the action of the reset member 500, and the pressing plate 422 presses the tool attachment 900 against the flange 300.

[0041] It should be noted that in this embodiment, the tool attachment 900 is set as a blade, and the tool attachment 900 can also be set as a grinding disc or other parts suitable for handheld oscillating multifunctional tools according to actual needs. The reset member 500 is set as a spring, and in other embodiments, the reset member 500 can also be set as a torsion spring, a spring, or other parts that can achieve the same effect. The utility model drives the spindle 400 to move up and down in the vertical direction by setting a rotating member 600, thereby achieving the clamping and loosening of the tool attachment 900, which is simple to operate, fast to replace the tool attachment 900, and good clamping effect.

[0042] Specifically, the spindle 400 includes a connected locking shaft 410, a pull rod 420 and a locking piece 430. One end of the locking shaft 410 is abutted against the rotating piece 600. The other end of the locking shaft 410 is provided with a slot 411. The pull rod 420 is inserted into the slot 411. A connecting portion 421 is provided on the end of the pull rod 420 close to the slot 411. A locking hole 412 is provided on the side of the slot 411. The locking piece 430 is partially provided in the locking hole 412 and abuts against the lower side of the connecting portion 421. The reset piece 500 is sleeved on the pull rod 420. One end of the reset piece 500 is abutted against the flange 300, and the other end of the reset piece 500 is abutted against the locking piece 430.

[0043] It should be noted that in this embodiment, the spindle 400 is divided into two parts, the locking shaft 410 and the pull rod 420 are connected by a locking piece 430, and the locking piece 430 is set as a steel ball. The locking piece 430 is positioned by a locking hole 412 set on the side of the slot 411, and the diameter of the connecting part 421 gradually increases from bottom to top, so that the locking piece 430 can clamp the connecting part 421. Since the tool accessory 900 is clamped by the pressing plate 422 at the bottom of the spindle 400, the processing accuracy of the spindle 400 is directly related to the clamping effect of the tool accessory 900. The utility model divides the spindle 400 into two parts, namely the locking shaft 410 and the pull rod 420, by dividing the spindle 400 into two parts, namely the locking shaft 410 and the pull rod 420. The length of each part is greatly reduced compared with the one-piece spindle 400, thereby reducing the processing difficulty and processing cost.

[0044] Specifically, a driving groove 610 is provided on the side of the rotating member 600, and the depth of the driving groove 610 changes continuously along the circumference of the rotating member 600, and the locking shaft 410 abuts against the bottom surface of the driving groove 610. The multifunctional tool of the utility model also includes an operating member 700, and a connecting rod 620 is provided on the top of the rotating member 600. The operating member 700 is arranged on the connecting rod 620, and the operating member 700 is rotated, and the operating member 700 drives the rotating member 600 to rotate.

[0045] It should be noted that, in this embodiment, the rotating member 600 is generally cylindrical, and a driving groove 610 arranged like a spiral line is arranged along the circumferential direction on the outer edge of the rotating member 600. The length of the driving groove 610 is one-fourth of the circumference of the rotating member 600. The operating member 700 refers to a rotary switch used by the user to control the rotation of the rotating member 600. A connecting rod 620 in the shape of a quadrangular prism is arranged on the top of the rotating member 600, and the operating member 700 is matched with the connecting rod 620 in a concave-convex manner. By arranging the driving groove 610 with a continuously changing depth along the circumferential direction on the outer edge of the rotating member 600, the movement of the spindle 400 can be controlled when the rotating member 600 rotates.

[0046] Preferably, the rotating member 600 rotates around the rotation axis L1, and the driving shaft 200 rotates around the driving axis L2, and the rotation axis L1 is parallel to the driving axis L2. By setting the rotation axis L1 and the driving axis L2 to be parallel, the structure of the utility model is more compact and the layout is simpler.

[0047] Preferably, a plurality of flanges 310 are provided on the flange surface of the flange 300 , and the flanges 310 are evenly distributed on the flange surface along the circumference of the flange 300 , and the tool attachment 900 is pressed against the flanges 310 .

[0048] It should be noted that the flange 310 serves to limit the tool attachment 900. In one embodiment, the diameter of the flange 310 is variable, and the diameter of the flange 310 gradually decreases in the direction away from the flange surface. The tool attachment 900 is provided with a mounting hole that matches the flange 310, and the tool attachment 900 is mounted on the flange 310 through the mounting hole. In other embodiments, the diameter of the flange 310 may be constant, and the tool attachment 900 is clamped on the flange surface through the flange 310. By setting the tool attachment 900 to be pressed on the flange 310, the clamping effect of the tool attachment 900 is better, and the clamping force can be smaller than the technical solution of clamping on the flange surface.

[0049] The driving system 100 of the utility model multifunctional tool comprises a motor 110, an eccentric assembly and a shift fork 150. The eccentric assembly is arranged on the output shaft of the motor 110. One end of the shift fork 150 is sleeved on the driving shaft 200, and the other end of the shift fork 150 is against the eccentric assembly. The eccentric assembly comprises an eccentric shaft 120, a counterweight 130 and a bearing 140. The eccentric shaft 120 is sleeved on the output shaft of the motor 110. The eccentric shaft 120 is provided with a first step surface 121 and a second step surface 122. The bearing 140 is sleeved on the first step surface 121, and the counterweight 130 is sleeved on the second step surface 122. The rotation of the output shaft of the motor 110 drives the eccentric shaft 120 to rotate, and the eccentric shaft 120 drives the bearing 140 thereon to rotate. Since the rotation axis of the eccentric shaft 120 does not coincide with the output shaft of the motor 110, the bearing 140 will continuously push the shift fork 150 to swing left and right during the rotation process. By arranging the counterweight 130 on the eccentric shaft 120 , the vibration frequency and amplitude of the multifunctional tool can be affected according to the size, shape and eccentric distance of the counterweight 130 , thereby determining the working efficiency and application range of the tool.

[0050] The multifunctional tool of the present invention further includes a shell assembly 800, which includes a head shell 810, a bottom shell 820 and a front box body 830. The drive shaft 200, the flange 300, the rotating part 600 and a part of the drive system 100 are arranged in the front box body 830. The head shell 810 and the bottom shell 820 both at least partially surround the front box body 830. The multifunctional tool of the present invention further includes a battery pack, on which a control board is arranged, and the control board is electrically connected to the motor.

[0051] It should be noted that, in this embodiment, the front box body 830 is connected to the housing of the motor 110, and the drive system 100 except the motor 110 is arranged in the front box body 830. The head shell 810 and the bottom shell 820 are separately arranged to jointly constitute the outer shell of the multi-function tool.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A multifunctional tool, characterized in that: include: Drive system; a drive shaft connected to the drive system; A flange, the flange being fixed to the bottom of the driving shaft; A spindle, the spindle is arranged in the driving shaft, and a pressing plate is arranged at the bottom of the spindle; A reset member, the reset member is sleeved on the spindle; A rotating member, the rotating member is arranged above the spindle and abuts against the top of the spindle; Among them, by rotating the rotating part, the spindle moves downward, and the pressure plate moves away from the flange, which is used to replace tool accessories. After the replacement is completed, the rotating part is rotated in the opposite direction, the spindle is reset under the action of the reset part, and the pressure plate presses the tool accessories onto the flange.

2. The multifunctional tool according to claim 1, characterized in that: The spindle comprises a connected locking shaft and a pull rod, one end of the locking shaft abuts against the rotating member, and the other end of the locking shaft is provided with a slot, and the pull rod is inserted into the slot.

3. The multifunctional tool according to claim 2, characterized in that: The spindle also includes a locking piece, a connecting portion is provided on one end of the pull rod close to the slot, a locking hole is provided on the side of the slot, the locking piece is partially provided in the locking hole and abuts against the connecting portion, the reset piece is sleeved on the pull rod, one end of the reset piece abuts against the flange, and the other end of the reset piece abuts against the locking piece.

4. The multifunctional tool according to claim 1, characterized in that: The rotating member rotates around a rotation axis, the driving shaft rotates around the driving axis, and the rotation axis is parallel to the driving axis.

5. The multifunctional tool according to claim 2, characterized in that: A driving groove is arranged on the side surface of the rotating member, the depth of the driving groove changes continuously along the circumference of the rotating member, and the locking shaft abuts against the bottom surface of the driving groove.

6. The multifunctional tool according to claim 5, characterized in that: It also includes an operating member, a connecting rod is arranged on the top of the rotating member, and the operating member is arranged on the connecting rod. When the operating member is rotated, the operating member drives the rotating member to rotate.

7. The multifunctional tool according to claim 1, characterized in that: A plurality of flanges are arranged on the flange surface of the flange plate. The flanges are evenly distributed on the flange surface along the circumferential direction, and the tool accessories are pressed tightly on the flanges.

8. The multifunctional tool according to claim 1, characterized in that: The driving system comprises a motor, an eccentric assembly and a shift fork. The eccentric assembly is arranged on the output shaft of the motor. One end of the shift fork is sleeved on the driving shaft, and the other end of the shift fork abuts against the eccentric assembly.

9. The multifunctional tool according to claim 8, characterized in that: The eccentric assembly includes an eccentric shaft, a counterweight and a bearing. The eccentric shaft is sleeved on the output shaft of the motor. The eccentric shaft is provided with a first step surface and a second step surface. The bearing is sleeved on the first step surface, and the counterweight is sleeved on the second step surface.

10. The multifunctional tool according to claim 1, characterized in that: It also includes a shell assembly, which includes a head shell, a bottom shell and a front box body. The drive shaft, flange, rotating parts and part of the drive system are arranged in the front box body. The head shell and the bottom shell at least partially surround the front box body.

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