Multifunctional tool

Abstract

The invention provides a multifunctional tool which outputs power enabling a workpiece to swing repeatedly through an output shaft and accommodates a receiving device used for keeping the workpiece on the output end of the output shaft, the receiving device comprises a receiving mechanism and a locking mechanism, the receiving mechanism has two working positions, and when the receiving mechanism is in the closed position, the locking mechanism is in the locked position. When the receiving device is in the opening position, the workpiece can fall onto the receiving mechanism or be separated from the receiving mechanism, and when the receiving device is in the opening position, the workpiece is stably kept on the output shaft by the receiving device and cannot fall off even when the output shaft runs at a high speed. The locking mechanism comprises an operating piece capable of changing the working position of the receiving mechanism and a locking piece for keeping the working position of the receiving mechanism; when the operating part is used, the receiving mechanism is forced to move from the open position to the closed position, and the workpiece held on the receiving mechanism is released at the moment; when the receiving mechanism is in the closed position, the locking piece can limit the receiving mechanism to move towards the open position under the condition that the operating piece is not used.

Description

Technical Field

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

[0002] A multi-tool (also called a "jack of all trades") is a power tool that can perform multiple tasks by replacing different accessories. It usually consists of a main unit and replaceable accessories, and is widely used for tasks such as grinding, cutting, scraping, polishing, etc. Compared with other professional tools, multi-tools are smaller in size and easier to operate and control. They are suitable for tasks that require precise control and a small operating space. There are various accessories (such as grinding discs, cutting discs, sandpaper, scrapers, etc.) to choose from to meet different work needs.

[0003] Chinese invention patent document CN201480043554.8 discloses a machine tool with a tool receiving device, wherein the tool receiving device has at least one tensioning device, at least one holding device and at least one locking device. The machine tool achieves locking of the holding device state through the locking device, allowing the tool device to be quickly installed on the holding device, and when the machine tool operation is completed, the tool device is in a high temperature state and an external force is applied to the tensioning device to release the tool device, thereby reducing the risk of burns to the operator. However, the locking device provided in this scheme utilizes the friction between the relevant components to achieve the locking of its state. Under long-term operation, the components will run in with each other, causing the friction to decrease, and the steady state is easily broken, thereby causing the stability of the machine tool to fail, affecting the user's work efficiency, and possibly causing unexpected accidents. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a multifunctional tool for providing a technical solution that can effectively stabilize the status of each mechanism.

[0005] To achieve the above object, the technical solution of the present invention is: A multifunctional tool having a receiving device mounted on an output shaft, comprising: A receiving mechanism having at least one closed position for receiving and releasing the workpiece and at least one open position for locking the workpiece; a locking mechanism having an operating member capable of forcing the receiving mechanism to disengage from an open position and a locking member capable of blocking the receiving mechanism from disengaging from a closed position; Wherein, when the receiving mechanism is out of the closed position, the locking element is forced to move away from the receiving mechanism, and when the receiving mechanism is out of the open position, the locking element is moved closer to the receiving mechanism.

[0006] Furthermore, the receiving mechanism includes at least one pair of receiving members, and each pair of receiving members are installed alternately with each other and rotate in opposite directions.

[0007] Furthermore, the receiving mechanism also includes a pull rod passing through the output shaft and an elastic member sleeved on the pull rod, and the elastic member is configured to push the receiving mechanism to move to the open position through the pull rod.

[0008] Furthermore, the receiving mechanism also includes a locking pin passing through the guide slot on the receiving member, and the locking pin is connected to the pull rod.

[0009] Furthermore, the receiving member is hinged on the rotating pin, and the pull rod drives the receiving member to move around the rotating pin through the locking pin.

[0010] Furthermore, one end of the pull rod has a locking groove that cooperates with the locking piece. When the receiving mechanism is in the closed position, the locking piece is partially embedded in the locking groove to prevent the receiving mechanism from leaving the closed position.

[0011] Furthermore, the operating member includes a trigger that pushes the receiving mechanism to move toward the closed position through the pull rod.

[0012] Furthermore, the locking member has a locking section and an unlocking section that are interconnected; when the receiving mechanism is in a closed position, the locking pin slides into the locking section and blocks the receiving mechanism from leaving the closed position; when the receiving mechanism is in an open position, the locking pin slides into the unlocking section.

[0013] Furthermore, the locking member abuts against the receiving member, and when the receiving member moves toward the open position, the locking member can be pushed away from the receiving mechanism.

[0014] Furthermore, the receiving device also includes a positioning seat installed in the output shaft, the positioning seat has a positioning groove extending radially along the output shaft, and the locking member is movably installed in the positioning groove.

[0015] The beneficial effects of the present invention compared to the prior art are: The receiving mechanism and locking mechanism provided by the present invention have a more stable locking state compared to the prior art, and are not easily destroyed by running-in, vibration, or accidental touch; at the same time, the technical solution in the present application reduces the complex structure required to realize the transition of the locking mechanism between the closed position and the locked position, thereby reducing the manufacturing cost and maintenance cost of the multi-function tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a multifunctional tool in an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a receiving device in an embodiment of the present invention; Figure 3 An exploded diagram of a receiving device in an embodiment of the present invention; Figure 4It is a front view of the receiving mechanism in the embodiment of the present invention when it is in the open position; Figure 5 for Figure 4 A three-dimensional schematic diagram of the structure of the middle part; Figure 6 It is a front view of the receiving mechanism in the embodiment of the present invention when it is in a closed position; Figure 7 for Figure 6 A three-dimensional schematic diagram of the structure of the middle part; Figure 8 is a schematic diagram of the three-dimensional structure of the operating member in an embodiment of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the receiving member in an embodiment of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the pull rod in an embodiment of the present invention; Fig.11 It is a structural schematic diagram of a multifunctional tool in another embodiment of the present invention; Fig.12 An exploded diagram of a receiving device in an embodiment of the present invention; Fig.13 It is a front view of the receiving mechanism in the embodiment of the present invention when it is in the open position; Fig.14 It is a front view of the receiving mechanism in the embodiment of the present invention when it is in a closed position.

[0017] In the figure: 1. Housing; 11. Output shaft; 2. Receiving mechanism; 21. Receiving member; 211. Guide groove; 212. Locking protrusion; 22. Rotating pin; 23. Locking pin; 24. Pull rod; 241. Locking groove; 242. Annular protrusion; 25. Elastic member; 3. Locking mechanism; 31. Locking member; 311. Spring; 312. Avoiding groove; 32. Operating member; 321. Wrench; 322. Fastener; 33. Locking section; 34. Unlocking section; 4. Workpiece; 5. Positioning seat; 51. Positioning groove; DETAILED DESCRIPTION

[0018] 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0019] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0020] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back" and the like indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0021] As used in this specification, the singular forms "a", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the context clearly indicates otherwise. As used in this specification, the term "or" is generally used to include the meaning of "and / or", unless the context clearly indicates otherwise, and the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0022] Please refer to Figure 1-10 An embodiment of the present invention provides a multifunctional tool, which outputs power to repeatedly swing a workpiece 4 through an output shaft 11. The output shaft 111 in the housing 1 is a cylindrical structure. A positioning seat 5 in the output shaft 11 accommodates a receiving device for holding the workpiece 4 on the output end of the output shaft 111. The receiving device includes a receiving mechanism 2 and a locking mechanism 3, wherein the receiving mechanism 2 has two working positions. In the closed position, the workpiece 4 can fall into the receiving mechanism 2 or detach from the receiving mechanism 2, and in the open position, the workpiece 4 is stably held on the output shaft 11 by the receiving device, and will not fall off even when the output shaft 11 runs at high speed.

[0023] The locking mechanism 3 includes an operating member 32 that can change the working position of the receiving mechanism 2 and a locking member 31 that maintains the working position of the receiving mechanism 2; when the operating member 32 is used, the receiving mechanism 2 is forced to move from the open position to the closed position, and the workpiece 4 held on the receiving mechanism 2 is released at this time; and the locking member 31 can limit the movement of the receiving mechanism 2 to the open position without external force when the receiving mechanism 2 is in the closed position; wherein, when the receiving mechanism 2 is out of the closed position, the locking member 31 will be forced to move away from the receiving mechanism 2, thereby preventing the locking member 31 from blocking the movement of the receiving mechanism 2, and when the receiving mechanism 2 is out of the open position and moves to the closed position, the locking member 31 will be close to the receiving mechanism 2 so that the locking member 31 blocks the receiving mechanism 2 from being out of the closed position.

[0024] Specifically, a pair of scissor-shaped receiving members 21 are provided in the receiving mechanism 2. The two receiving members 21 are staggered and pivotally connected to the rotating pin 22 in the receiving mechanism 2, and rotate in opposite directions with the axis of the rotating pin 22 as the rotating axis. The outer side of each receiving member 21 abuts against a locking member 31, and when the receiving member 21 rotates, it drives the locking member 31.

[0025] A pull rod 24 is passed through the output shaft 11, and an annular protrusion 242 is provided in the middle of the pull rod 24. An elastic member 25 is sleeved on the pull rod 24 between the annular protrusion 242 and the positioning seat 5. The elastic member 25 gives an upward force to the pull rod 24, so that the pull rod 24 always moves upward, thereby providing power for the receiving mechanism 2 to move to the open position; but the locking member 31 can block the pull rod 24 from moving upward when the receiving mechanism 2 is in the closed position, thereby preventing the pull rod 24 from driving the receiving member 21 to move to the open position.

[0026] Specifically, the receiving member 21 is provided with a guide groove 211, which is a long strip-shaped through hole. One end of the pull rod 24 drives the receiving member 21 to move around the rotating pin 22 through the guide groove 211 through the locking pin 23 arranged at the end, thereby controlling the receiving mechanism 2 to move between the closed position and the open position. In this embodiment, a locking groove 241 is formed at one end of the pull rod 24 close to the receiving mechanism 2, and the locking groove 241 matches the shape of the locking piece 31, so that the locking piece 31 can move freely in the locking groove 241, and a spring 311 is installed at the end of the locking piece 31 away from the locking groove 241. The spring 311 pushes the locking piece 31 in the direction of embedding into the locking groove 241, and also limits the locking piece 31 from disengaging from the locking groove 241 in the absence of external force, thereby preventing the pull rod 24 from moving upward under the action of the elastic piece 25 and disengaging from the lock of the locking piece 31.

[0027] The positioning seat 5 is also provided with a positioning groove 51 extending radially along the output shaft 11, one end of the positioning groove 51 is close to the output shaft 11, and the other end is close to the pull rod 24. A locking protrusion 212 is provided at the position where the receiving member 21 abuts against the locking member 31, and the locking protrusion 212 can push the locking member 31 to disengage from the locking groove 241 and enter the positioning groove 51 when the receiving member 21 moves from the closed position to the open position, so that the locking member 31 is away from the receiving mechanism 2.

[0028] An operating member 32 for pushing the pull rod 24 downward is provided at one end of the pull rod 24 away from the receiving mechanism 2. The operating member 32 includes a wrench 321 and a fastener 322. When the wrench 321 is lifted, the thicker part of the cam on the wrench 321 abuts against the pull rod 24, pushing the pull rod 24 downward, so that the locking pin 23 connected to the pull rod 24 pushes the receiving member 21 to move to the closed position. At the same time, the locking member 31 moves in the direction of entering the locking groove 241 under the push of the spring 311. After operating the wrench 321, the fastener 322 can be used to temporarily fix the wrench 321.

[0029] In addition, in order to reduce the thickness of the positioning seat 5, it is necessary to reduce the stroke of the locking member 31 in a limited space. Therefore, an air avoidance groove 312 is set on the locking member 31. The air avoidance groove 312 is used to accommodate the locking protrusion 212 of the receiving member 21. When the locking member 31 approaches the farthest end of the positioning groove 51, the locking protrusion 212 begins to enter the air avoidance groove 312 to prevent the receiving member 21 from excessively squeezing the locking member 31.

[0030] The working principle of this embodiment: When the receiving member 21 of the receiving mechanism 2 is in the closed position, the pull rod 24 has a tendency to move upward under the push of the elastic member 25, but the locking member 31 embedded in the locking groove 241 of the pull rod 24 limits the movement of the pull rod 24, so that the receiving member 21 remains in the closed position; at this time, the shape of the part of the receiving member 21 used to receive the workpiece 4 facilitates the workpiece 4 to be separated from or received by the receiving mechanism 2. At this time, the workpiece 4 gives the receiving mechanism 2 an upward external force, and the receiving member 21 is forced to rotate and push the locking member 31 to separate from the locking groove 241 and away from the receiving mechanism 2. At this time, the pull rod 24 moves upward under the action of the elastic member 25, further driving the receiving member 21 to move to the open position, and finally locking the workpiece 4.

[0031] When the receiving member 21 of the receiving mechanism 2 is in the open position, the locking member 31 is completely located in the positioning groove 51, and the pull rod 24 maintains the receiving member 21 in the open position under the elastic potential energy of the elastic member 25. At this time, the wrench 321 is lifted to give the pull rod 24 a downward external force, so that the pull rod 24 pushes the receiving member 21 to rotate, and the force of the locking protrusion 212 of the receiving member 21 against the locking member 31 is reduced. The spring 311 moves the locking member 31 in the direction close to the receiving mechanism 2. When the pull rod 24 reaches the appropriate position, the locking member 31 enters the locking groove 241. At this time, even if the wrench 321 is released, the pull rod 24 is still restricted from moving upward by the locking member 31, and the receiving member 21 returns to the closed position, thereby releasing the workpiece 4 locked on the receiving mechanism 2.

[0032] Please refer to Figure 11-14 In another embodiment of the present invention, the locking groove 241 is not provided on the pull rod 24, but a locking section 33 and an unlocking section 34 that are interconnected are provided on the locking member 31; when the receiving mechanism 2 is in the closed position, the locking pin 23 slides into the locking section 33 and prevents the receiving mechanism 2 from leaving the closed position; when the receiving mechanism 2 is in the open position, the locking pin 23 slides into the unlocking section 34, and at this time the locking pin 23 restricts the locking member 31 from moving in the direction of locking the receiving mechanism 2.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A multifunctional tool having a receiving device mounted on an output shaft, characterized in that: include: A receiving mechanism having at least one closed position for receiving and releasing the workpiece and at least one open position for locking the workpiece; a locking mechanism having an operating member capable of forcing the receiving mechanism to disengage from an open position and a locking member capable of blocking the receiving mechanism from disengaging from a closed position; Wherein, when the receiving mechanism is out of the closed position, the locking element is forced to move away from the receiving mechanism, and when the receiving mechanism is out of the open position, the locking element is moved closer to the receiving mechanism.

2. The multifunctional tool according to claim 1, characterized in that: The receiving mechanism comprises at least one pair of receiving members, and each pair of receiving members are installed alternately with each other and rotate in opposite directions.

3. The multifunctional tool according to claim 2, characterized in that: The receiving mechanism further comprises a pull rod passing through the output shaft and an elastic member sleeved on the pull rod, wherein the elastic member is configured to push the receiving mechanism to move toward the open position through the pull rod.

4. The multifunctional tool according to claim 3, characterized in that: The receiving mechanism further comprises a locking pin passing through a guide slot on the receiving member, wherein the locking pin is connected to the pull rod.

5. The multifunctional tool according to claim 4, characterized in that: The receiving member is hinged on the rotating pin, and the pull rod drives the receiving member to move around the rotating pin through the locking pin.

6. The multifunctional tool according to claim 5, characterized in that: One end of the pull rod is provided with a locking groove matched with the locking piece. When the receiving mechanism is located at the closed position, the locking piece is partially embedded in the locking groove to prevent the receiving mechanism from being separated from the closed position.

7. The multifunctional tool according to claim 5, characterized in that: The operating member includes a trigger that pushes the receiving mechanism to move toward a closed position through a pull rod.

8. The multifunctional tool according to claim 5, characterized in that: The locking member has a locking section and an unlocking section which are interconnected; when the receiving mechanism is in a closed position, the locking pin slides into the locking section and blocks the receiving mechanism from being out of the closed position; when the receiving mechanism is in an open position, the locking pin slides into the unlocking section.

9. The multifunctional tool according to claim 2, characterized in that: The locking member abuts against the receiving member, and the receiving member can push the locking member away from the receiving mechanism when it moves toward the open position.

10. The multifunctional tool according to claim 1, characterized in that: The receiving device also includes a positioning seat installed in the output shaft, the positioning seat has a positioning groove extending radially along the output shaft, and the locking member is movably installed in the positioning groove.

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