Multi-output power switching mechanism and electric power tool

Abstract

The utility model discloses a kind of multi-output end power switching mechanism and electric tool, belong to electric tool field.The utility model's multi-output end power switching mechanism, including support seat, input assembly, at least two output assemblies and power engagement assembly are equipped in support seat, each output assembly includes an output shaft and a driven transmission part corresponding with the output shaft, input assembly can simultaneously drive the driven transmission part movement of each output assembly;Power engagement assembly includes clutching member that can be connected with the output shaft and driven transmission part of corresponding output assembly, when clutching member is engaged with certain output assembly, remaining output assembly is in disconnected state.The utility model can keep the stable engagement of master driven transmission part, improve the flexibility of work head reversing operation;And, simplify internal transmission structure, reversing operation is convenient;When using, the torsional force effect generated by support seat cannot be transmitted to clutching member, guarantee the stability of transmission.

Description

Technical Field

[0001] This utility model relates to an electric tool, and more specifically, to a multi-output power switching mechanism and an electric tool. Background Technology

[0002] Handheld power tools (such as electric drills, electric screwdrivers, and impact drills) are widely used in various fields such as construction, home repair, and industrial assembly. Their core function is to perform tasks such as drilling and screwing / unscrewing by driving working attachments (such as drill bits and screwdriver bits). Traditional handheld power tools typically only have one output head or chuck for attaching working attachments. When a different type or size of working attachment is required for a particular task, the operator must manually disassemble the original attachment and reinstall the new one. This process is tedious and time-consuming, not only reducing work efficiency but also potentially causing wear and tear on the attachments or chuck due to frequent disassembly and reassembly, thus affecting the user experience.

[0003] To address the challenge of accessory replacement in single-output tools, existing technologies have developed handheld power tools with dual working chucks or multiple output units. By changing the position of different working chucks or output units, quick adaptation to different working conditions can be achieved without frequent accessory disassembly and reassembly. However, these improved tools still suffer from several technical shortcomings, limiting their effectiveness and widespread application:

[0004] 1) Some multi-output tools adopt a single-axis two-end output structure. This design causes the other working head to rotate when one working head is working. For example, the "handheld power tool" disclosed in Chinese Patent Publication No. CN103963017A (publication date: August 6, 2014) has an unused working head that rotates near the operating end, which poses a risk of injury to the operator. When using the tool, the operator also needs to be careful not to touch the unused working head, which affects the operator's attention and causes inconvenience in use.

[0005] 2) Some tools have made improvements to address the issue of simultaneous rotation of both working heads. For example, Chinese Patent Publication No. CN211491357U discloses a "Double-Head Electric Drill" (publication date: September 15, 2020), which adopts a dual-output shaft design and uses bevel gears and a motor for drive. Because the axis of the motor's driving bevel gear has a certain eccentricity with the rotation axis of the output shaft support, when the driven bevel gear of one output shaft meshes with the motor's driving bevel gear, the driven bevel gear of the other output shaft disengages from the motor's driving bevel gear, so only the working output shaft is driven to rotate. This transmission structure is relatively simple, but when the working heads are reversed, it is difficult to ensure that the driven bevel gear and the driving bevel gear are perfectly meshed, which can easily cause jamming between them, resulting in poor flexibility in the working head reversal operation.

[0006] One commercially available dual-head power tool features a bushing-type clutch structure. The motor and drive shaft are connected via a bevel gear set, and a sliding bushing is mounted on the drive shaft. This bushing can axially slide and engage or disengage with the drive claws of the two output shafts, thus driving the output shafts in the working position. However, this design is complex, requiring a rotating fit between the support housing and the mounting part of the switching mechanism, placing high demands on the assembly structure of the machine body. Furthermore, the bushing's sliding is achieved through a lever and a shift fork, with the lever engaging with a locking unit to restrict the free rotation of the switching mechanism. During use, the reverse force on the output shaft often generates a torsional force on the switching mechanism, which acts on the shift fork, causing contact between the shift fork and the bushing. This increases the rotational friction and noise of the bushing, negatively impacting transmission stability and efficiency.

[0007] In summary, existing handheld power tools with dual working heads or multiple output units still have room for improvement in terms of transmission structure simplification, ease of operation, and safety. Summary of the Invention

[0008] 1. Technical problem to be solved by the utility model

[0009] The purpose of this invention is to overcome the aforementioned shortcomings of existing multi-head power tools and provide a multi-output power switching mechanism and power tool. Using the technical solution of this invention, a driven transmission component is rotatably mounted on the output shaft of each output component. Each driven transmission component is driven to move simultaneously by the input component. The power transmission between the corresponding output shaft and the driven transmission component is achieved using the clutch component of the power engagement component, enabling selective single-end output from multiple output components. Stable meshing between gears is maintained during multi-head switching, improving the flexibility of head reversal operations. Furthermore, the clutch component can rotate together with the support base. After multi-head switching, only the clutch component needs to move towards the working head, simplifying the internal transmission structure and facilitating reversal operations. Moreover, the torque generated by the support base during use is not transmitted to the clutch component, ensuring transmission stability and efficiency.

[0010] 2. Technical Solution

[0011] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0012] This utility model discloses a multi-output power switching mechanism, including a support base. The support base houses an input component, at least two output components, and a power engagement component disposed between the input component and each output component.

[0013] Each of the output components includes an output shaft and a driven transmission member that can be configured to correspond to the output shaft. The input component can simultaneously drive the driven transmission members of each output component to move.

[0014] The power engagement assembly includes a clutch member capable of engaging with the output shaft and driven transmission member of the corresponding output assembly to establish power transmission between the output shaft and the driven transmission member. When the clutch member engages with a certain output assembly, the other output assemblies are in an open state, thereby achieving selective single-end output of multiple output assemblies.

[0015] Furthermore, the output shaft has a first engagement portion, the driven transmission member has a second engagement portion, and the clutch member has an engagement portion; the clutch member has a first position and a second position that can be switched between each other. In the first position, the engagement portion of the clutch member engages simultaneously with the first engagement portion and the second engagement portion of the corresponding output component to drive the output shaft and the driven transmission member; in the second position, the engagement portion of the clutch member disengages from at least the first engagement portion or the second engagement portion of the corresponding output component to disconnect the output shaft and the driven transmission member.

[0016] Furthermore, the first joint has a plurality of first engagement grooves, the second joint has a plurality of second engagement grooves, and the engagement part of the clutch member has engagement teeth, which can be simultaneously inserted into the first engagement grooves and the second engagement grooves to realize the transmission connection between the output shaft and the corresponding driven transmission member.

[0017] Furthermore, the end of the meshing teeth has a guide cone tip, and the insertion ends of the first and second meshing grooves are both provided with guide slopes.

[0018] Furthermore, each of the output shafts has an optical axis extending from its tail end, and the clutch member has a shaft hole that slides with the optical axis. The clutch member switches between the first position and the second position by sliding on the optical axis.

[0019] Furthermore, the multiple output components are circumferentially distributed around the rotation axis of the support base, the driven transmission component has a bevel tooth surface, and the input component includes a driving bevel gear, which meshes with the bevel tooth surface of each driven transmission component.

[0020] Furthermore, it also includes a safety lock assembly for unlocking or locking the support base. The safety lock assembly includes a locking member and a lock disc. The lock disc is disposed on the support base and has lock holes distributed circumferentially around the rotation axis of the support base at a set angle, which is not less than the number of output components. The locking member has a bolt that can be inserted into or withdrawn from the corresponding lock hole.

[0021] Furthermore, the power engagement assembly also includes a switching component for moving the clutch component to achieve selective single-end output of multiple output components.

[0022] Furthermore, the switching component includes a cam disposed within a support base, the cam having a cam surface that contacts and engages with each clutch component, the cam surface having a protrusion for engaging a clutch component with a corresponding output component; the power engagement component also includes an elastic element acting on each clutch component to maintain the tendency of the clutch component to disengage from the corresponding output component.

[0023] Furthermore, the cam is connected to a knob located on the outside of the support via a camshaft; or, the cam is fixed in a fixed position relative to the support, and the cam protrusion points in a set direction so that the output component that is switched to the set direction by the support is engaged with the clutch component.

[0024] Furthermore, the cam surface of the cam is also provided with a ring groove for accommodating the tail ends of each output shaft.

[0025] Furthermore, when there are two output components arranged coaxially, the clutch components corresponding to the two output components are connected together, and the switching component includes a shift fork located in the support base. The shift fork is connected to the clutch component, and the upper end of the shift fork is connected to a push button located on the outside of the support base.

[0026] Furthermore, a positioning cover is fixed to the upper part of the support base, the push button slides with the positioning cover, and there is a positioning structure between the push button and the positioning cover for keeping the clutch component engaged with the output component at the corresponding end.

[0027] This utility model discloses an electric tool, including a body, wherein the body is equipped with the aforementioned multi-output power switching mechanism.

[0028] The machine body has an operating handle and a power component, the support base is rotatably mounted on the machine body, and the input component is connected to the power component in a transmission manner.

[0029] Furthermore, the upper part of the machine body is also provided with a stabilizing frame, which defines a clearance groove for avoiding the working head in a non-working state, and the stabilizing frame is rotatably connected to the upper end of the support base.

[0030] 3. Beneficial effects

[0031] Compared with existing known technologies, the technical solution provided by this utility model has the following significant advantages:

[0032] (1) A multi-output power switching mechanism and power tool of the present invention, wherein the multi-output power switching control method drives the driven components of multiple output ends to be in a state that can be driven simultaneously; controls the engagement components corresponding to multiple output ends so that at any given time only one output end is allowed to establish power transmission with its corresponding driven component, and prevents the other output ends from establishing power transmission, thereby realizing selective single-end power output of multiple output ends; the switching mechanism includes a support base, the support base is provided with an input component, at least two output components, and a power engagement component disposed between the input component and each output component, each output component includes an output shaft and a driven transmission component that can be disposed corresponding to the output shaft, and the input component can simultaneously drive the driven transmission component of each output component. The moving parts move; the power engagement assembly includes a clutch member that can engage with the output shaft and driven transmission member of the corresponding output assembly to establish power transmission between the output shaft and the driven transmission member. When the clutch member is engaged with a certain output assembly, the other output assemblies are in an open state, so as to realize selective single-end output of multiple output assemblies. Compared with the prior art, it can maintain stable meshing between gears during the conversion of multiple working heads, improving the flexibility of working head reversing operation. In addition, the clutch member can rotate together with the support base. After switching multiple working heads, it is only necessary to ensure that the clutch member moves towards the working head on the working side, which simplifies the internal transmission structure and facilitates reversing operation. Moreover, the torque generated by the support base during use is not transmitted to the clutch member, ensuring the stability and efficiency of transmission.

[0033] (2) A multi-output power switching mechanism and electric tool of the present invention, wherein the output shaft has a first engagement part, the driven transmission component has a second engagement part, and the clutch component has an engagement part; the clutch component has a first position and a second position that can be switched with each other. In the first position, the engagement part of the clutch component engages with the first engagement part and the second engagement part of the corresponding output component at the same time, so that the output shaft and the driven transmission component are connected by transmission; in the second position, the engagement part of the clutch component disengages from at least the first engagement part or the second engagement part of the corresponding output component, so that the output shaft and the driven transmission component are disconnected; through the mechanical transmission cooperation between the clutch component and the output shaft and the driven transmission component, the stable engagement and disengagement of the output shaft and the driven transmission component are realized, which further facilitates the selective single-end output of multiple output components through the power engagement component.

[0034] (3) The present invention provides a multi-output power switching mechanism and an electric tool, wherein the first joint has a plurality of first meshing grooves, the second joint has a plurality of second meshing grooves, and the meshing part of the clutch member has meshing teeth. The meshing teeth can be simultaneously inserted into the first and second meshing grooves to realize the transmission connection between the output shaft and the corresponding driven transmission member. The multi-tooth synchronous meshing method significantly improves the torque transmission capability and impact resistance. Furthermore, the end of the meshing teeth has a guide cone tip, and the insertion end of the first and second meshing grooves is provided with a guide slope, so that the meshing teeth of the clutch member are more smoothly connected with the first and second meshing grooves, reducing the jamming and abnormal noise when switching different working heads, and making the operation more convenient and stable.

[0035] (4) The present invention provides a multi-output power switching mechanism and an electric tool, wherein the tail end of each output shaft extends into an optical shaft portion, and the clutch component has a shaft hole that slides with the optical shaft portion. The clutch component switches between the first position and the second position by sliding on the optical shaft portion. The optical shaft portions of the two output shafts are used as the guide portion of the clutch component, which makes the installation accuracy of the clutch component higher, the linearity of the motion trajectory better, and the switching control of different working heads more accurate.

[0036] (5) The present invention provides a multi-output power switching mechanism and electric tool, wherein multiple output components are circumferentially distributed around the rotation axis of the support base, which has high space utilization and can flexibly switch between different working heads according to different usage scenarios; the driven transmission component has bevel tooth surface, and the input component includes an active bevel gear, which meshes with the bevel tooth surface of each driven transmission component respectively. The bevel gear transmission design realizes efficient meshing transmission between the input component and multiple output components, and the transmission is smooth and the operating noise is low.

[0037] (6) The present invention provides a multi-output power switching mechanism and an electric tool, which further includes a safety lock assembly for unlocking or locking the support base. The safety lock assembly includes a locking component and a lock disc. The lock disc is disposed on the support base and has lock holes distributed around the rotation axis of the support base at a set angle, which are not less than the number of output components. The locking component has a bolt that can be inserted into or removed from the corresponding lock hole. The safety lock assembly has a simple structure, is easy to operate, and is secure and reliable, ensuring the stability of the electric tool. Furthermore, the working angle of multiple output components can be adjusted by the number and position of the lock holes, thereby meeting different usage requirements.

[0038] (7) The present invention provides a multi-output power switching mechanism and an electric tool, wherein the power engagement component further includes a switching component for driving the clutch component to move to achieve selective single-end output of multiple output components. The switching component enables flexible selection and switching of different output components, making it more convenient to use.

[0039] (8) A multi-output power switching mechanism and electric tool of the present invention, wherein the switching component includes a cam disposed in a support base, the cam having a cam surface that contacts and engages with each clutch component, the cam surface having a protrusion for engaging a certain clutch component with a corresponding output component; the power engagement component also includes an elastic element acting on each clutch component to keep the clutch component in a disengaged tendency from the corresponding output component; by using the above-mentioned cam-type switching component, the synchronous control of multiple clutch components can be stably realized, and the structure is simple and compact.

[0040] (9) The present invention provides a multi-output power switching mechanism and an electric tool, wherein the cam is connected to a knob located on the outside of the support seat via a camshaft. By rotating the knob, different output components can be selected for power output, making the use more flexible and the switching operation less strenuous; or, the cam is fixed in a fixed position relative to the support seat, and the cam protrusion points to a set direction so that the output component that is switched to the set direction by the support seat is in a state of engagement with the clutch component. This method can realize the power transmission of the output component that rotates to the working position by rotating and switching multiple output components, reducing the operation steps and making the use simpler and more convenient.

[0041] (10) A multi-output power switching mechanism and electric tool of the present invention, wherein the cam surface of the cam is provided with a ring groove for accommodating the tail of each output shaft. The ring groove provides clearance space for the output shaft in motion to avoid interference, and at the same time can ensure the length of the optical shaft part at the tail of the output shaft, prevent the clutch component from disengaging from the optical shaft part, and improve the coordination stability of the clutch component and the optical shaft part.

[0042] (11) The present invention provides a multi-output power switching mechanism and power tool. When there are two output components and they are coaxially arranged, the clutch components corresponding to the two output components are connected together. The switching component includes a shift fork located in the support base. The shift fork is connected to the clutch component. The upper end of the shift fork is connected to a push button located on the outside of the support base. The shift fork type switching component has a simple and compact structure. It only requires back and forth operation and can more intuitively indicate the transmission status. It is convenient to use in power tools with double working heads. In addition, a positioning cover is fixed on the upper part of the support base. The push button is slidably engaged with the positioning cover. There is also a positioning structure between the push button and the positioning cover to keep the clutch component and the corresponding output component in an engaged state. This makes it less likely for the clutch component to slip accidentally and cause power transmission interruption, thus ensuring working stability.

[0043] (12) An electric tool of the present invention is provided with a stabilizing frame on the upper part of its body. The stabilizing frame defines a clearance groove for avoiding the working head in the non-working state. The stabilizing frame is rotatably connected to the upper end of the support base, which can support the support base and make the structure of the support base more stable and able to withstand greater reverse force. Attached Figure Description

[0044] Figure 1 This is a three-dimensional structural diagram of a multi-output power switching mechanism according to Embodiment 1 of this utility model;

[0045] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0046] Figure 3 This is a schematic diagram of the internal structure of a multi-output power switching mechanism according to Embodiment 1 of this utility model;

[0047] Figure 4 This is a schematic diagram showing the disassembled structure of the power engagement assembly and a set of output assemblies in Embodiment 1 of this utility model;

[0048] Figure 5 This is a schematic diagram of the cooperation structure between the power engagement component and the four output components in Embodiment 1 of this utility model;

[0049] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure;

[0050] Figure 7 This is a schematic diagram of the angle adjustment structure between the safety lock assembly and the support base in Embodiment 1 of this utility model;

[0051] Figure 8 This is a three-dimensional structural diagram of a multi-head power tool according to Embodiment 1 of the present invention;

[0052] Figure 9 This is a schematic diagram of the internal transmission principle of a multi-head power tool according to Embodiment 1 of this utility model;

[0053] Figure 10 This is a three-dimensional cross-sectional view of a multi-output power switching mechanism according to Embodiment 2 of this utility model;

[0054] Figure 11 This is a planar cross-sectional view of a multi-output power switching mechanism according to Embodiment 2 of this utility model;

[0055] Figure 12 This is a schematic diagram showing the engagement state of the output shaft, driven transmission component, and clutch component in Embodiment 2 of this utility model;

[0056] Figure 13 This is a schematic diagram showing the disassembled state of the output shaft, driven transmission component, and clutch component in Embodiment 2 of this utility model;

[0057] Figure 14 This is a schematic diagram of the meshing transmission of the output shaft, driven transmission component, and clutch component in Embodiment 2 of this utility model;

[0058] Figure 15 for Figure 14 Schematic diagram of the cross-sectional structure along the AA direction;

[0059] Figure 16 This is a schematic diagram of the angle adjustment structure between the safety lock assembly and the support base in Embodiment 2 of this utility model;

[0060] Figure 17 This is a schematic diagram of the internal transmission principle of a double-working-head power tool according to Embodiment 2 of this utility model;

[0061] Figure 18 This is a schematic diagram of the working state of a dual-head power tool according to the present invention;

[0062] Figure 19 This is a schematic diagram of another working state of a dual-head power tool according to this utility model.

[0063] Explanation of the labels in the diagram:

[0064] 1. Support base; 1-1. Positioning cover; 1-1a. Positioning groove; 2. Input assembly; 2-1. Driving bevel gear; 3. Output assembly; 3-1. Output shaft; 3-1-1. First meshing groove; 3-1-1a. Guide slope; 3-1-2. Optical shaft part; 3-2. Driven transmission component; 3-2-1. Second meshing groove; 3-2-1a. Guide slope; 3A. First engagement part; 3B. Second engagement part; 4. Power engagement assembly; 4-1. Clutch component; 4A. Engaging part; 4-1-1. Meshing gear; 4-1-1a. Guide cone tip; 4-1-2. Shaft hole; 4-2. Switching Components; 4-2-1, Cam; 4-2-1a, Cam surface; 4-2-1b, Protrusion; 4-2-1c, Annular groove; 4-2-2, Elastic element; 4-2-3, Knob; 4-2-4, Shift fork; 4-2-5, Push button; 4-2-5a, Spring pin; 5, Safety lock assembly; 5-1, Locking component; 5-1a, Lock bolt; 5-2, Locking disc; 5-2a, Lock hole; 5-3, Return spring; 6, Body; 6-1, Operating handle; 6-2, Power assembly; 6-3, Stabilizer; 6-4, Clearance groove; 6-5, High / low speed switch; 6-6, Battery pack; 7, Working head. Detailed Implementation

[0065] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0066] [Example 1]

[0067] This embodiment relates to a multi-output power switching control method, a switching mechanism, and a power tool. The multi-output power switching control method serves as a design concept, guiding the specific design of the switching mechanism and the power tool. This multi-output power switching control method mainly includes the following:

[0068] The driven components that drive multiple output terminals are in a state where they can be driven simultaneously;

[0069] By controlling the engagement components corresponding to multiple output terminals, only one output terminal is allowed to establish power transmission with its corresponding driven component at any given time, while preventing the other output terminals from establishing power transmission, thereby achieving selective single-end power output from multiple output terminals.

[0070] This multi-output power switching control method is applied to a multi-output power switching mechanism. The following section will further explain the multi-output power switching mechanism in conjunction with the "multi-output power switching mechanism".

[0071] Combination Figures 1 to 6As shown, this embodiment of a multi-output power switching mechanism includes a support base 1. The support base 1 houses an input component 2, at least two output components 3, and a power engagement component 4 disposed between the input component 2 and each output component 3. The output components 3 can be connected to different working heads 7 to perform different work tasks. Each output component 3 includes an output shaft 3-1 and a driven transmission member 3-2 corresponding to the output shaft 3-1. The output shaft 3-1 corresponds to the aforementioned output end, and the driven transmission member 3-2 corresponds to the driven component of the output end. The input component 2 can simultaneously drive... The driven transmission component 3-2 of each output component 3 moves, that is, the input component 2 can drive the driven components of multiple output ends to be driven simultaneously. Since the driven transmission component 3-2 is rotatably mounted on the corresponding output shaft 3-1, the driven transmission component 3-2 can rotate freely relative to the output shaft 3-1. The input component 2 always maintains a transmission relationship with each driven transmission component 3-2. Therefore, when the support base 1 rotates to switch different working heads 7 for operation, there will be no repeated separation and re-engagement action between the input component 2 and the driven transmission component 3-2, thereby eliminating the jamming phenomenon in the traditional meshing process of the driving gear and driven gear. The power engagement assembly 4 is equivalent to the engagement component described above. It includes a clutch member 4-1 that can engage with the output shaft 3-1 and driven transmission member 3-2 of the corresponding output assembly 3 to establish power transmission between the output shaft 3-1 and the driven transmission member 3-2. The clutch member 4-1 is used to realize the engagement or disengagement between the output shaft 3-1 and the driven transmission member 3-2 in each group of output assemblies 3. When the clutch member 4-1 is engaged with a certain output assembly 3, the other output assemblies 3 are in the disengaged state. That is, at any given time, only one output end is allowed to establish power transmission with its corresponding driven component, and the other output ends are prevented from establishing power transmission, so as to realize selective single-end output of multiple output assemblies 3. The above design maintains stable meshing between gears during the switching of multiple working heads, improving the flexibility of working head reversal operations. Furthermore, the clutch component can rotate together with the support base, so after switching multiple working heads, it is only necessary to ensure that the clutch component moves towards the working head on the working side, simplifying the internal transmission structure and facilitating reversal operations. Moreover, the torque generated by the support base during use is not transmitted to the clutch component, ensuring the stability and efficiency of the transmission.

[0072] like Figure 4As shown, the output shaft 3-1 has a first engagement portion 3A, the driven transmission member 3-2 has a second engagement portion 3B, and the clutch member 4-1 has a meshing portion 4A. The clutch member 4-1 has a first position and a second position that can be switched between each other. In the first position, the meshing portion 4A of the clutch member 4-1 engages simultaneously with the first engagement portion 3A and the second engagement portion 3B of the corresponding output component 3, so that the output shaft 3-1 and the driven transmission member 3-2 are connected by transmission. In the second position, the meshing portion 4A of the clutch member 4-1 disengages from at least the first engagement portion 3A or the second engagement portion 3B of the corresponding output component 3, so that the output shaft 3-1 and the driven transmission member 3-2 are disconnected. Through the mechanical transmission cooperation between the clutch member 4-1, the output shaft 3-1, and the driven transmission member 3-2, stable engagement and disengagement of the output shaft 3-1 and the driven transmission member 3-2 are achieved, further facilitating the selective single-end output of multiple output components through the power engagement assembly. Specifically, the first engagement portion 3A has several first engagement grooves 3-1-1, the second engagement portion 3B has several second engagement grooves 3-2-1, and the engagement portion 4A of the clutch member 4-1 has engagement teeth 4-1-1. The engagement teeth 4-1-1 can be simultaneously inserted into the first engagement grooves 3-1-1 and the second engagement grooves 3-2-1 to realize the transmission connection between the output shaft 3-1 and the corresponding driven transmission member 3-2. In this embodiment, the first engagement grooves 3-1-1 are formed on the outer wall of the output shaft 3-1, and the second engagement grooves 3-2-1 are formed on the inner hole of the driven transmission member 3-2. The first engagement grooves 3-1-1 and the second engagement grooves 3-2-1 located at the same end are positioned opposite each other, resulting in a simple and compact structure. Power transmission is achieved by using the engagement teeth 4-1-1 of the clutch member 4-1, making the transmission more direct and reliable. Furthermore, the end of the meshing tooth 4-1-1 has a guide cone tip 4-1-1a, which is roughly "V" shaped. The insertion ends of the first meshing groove 3-1-1 and the second meshing groove 3-2-1 are provided with guide slopes 3-1-1a and 3-2-1a, respectively, so that the insertion ends of the first meshing groove 3-1-1 and the second meshing groove 3-2-1 are trumpet-shaped. During the meshing process of the meshing tooth 4-1-1 and the first meshing groove 3-1-1 and the second meshing groove 3-2-1, under the action of the guide cone tip 4-1-1a and the guide slopes 3-1-1a and 3-2-1a, it can be ensured that the meshing tooth 4-1-1 smoothly inserts into the first meshing groove 3-1-1 and the second meshing groove 3-2-1, realizes the transmission of power, reduces the feeling of jamming and abnormal noise when switching different working heads, and makes the operation more convenient and stable.

[0073] The specific meshing relationship between the clutch component 4-1, the output shaft 3-1, and the driven transmission component 3-2 can be found in the following reference. Figure 15As shown, after the meshing teeth 4-1-1 are inserted into the first meshing groove 3-1-1 and the second meshing groove 3-2-1, a portion of the meshing teeth 4-1-1 is located in the first meshing groove 3-1-1, and the other portion is located in the second meshing groove 3-2-1. The driven transmission component 3-2 rotates under the driving action of the input component 2, driving the output shaft 3-1 to rotate via the meshing teeth 4-1-1, thus realizing the transmission of power. Figure 4 As shown, in this embodiment, each output shaft 3-1 has an optical shaft portion 3-1-2 extending from its tail end. The clutch member 4-1 has a shaft hole 4-1-2 that slides with the optical shaft portion 3-1-2. The clutch member 4-1 switches between the first and second positions by sliding on the optical shaft portion 3-1-2. By using the optical shaft portions 3-1-2 of the two output shafts 3-1 as guide portions of the clutch member 4-1, the installation accuracy of the clutch member 4-1 is higher, the linearity of the movement trajectory is better, and the switching control of different working heads is more accurate.

[0074] like Figure 2 and Figure 3 As shown, in this embodiment, multiple output components 3 are circumferentially distributed around the rotation axis Z1 of the support base 1, resulting in high space utilization and allowing for flexible and rapid switching between different working heads according to different usage scenarios. Preferably, the multiple output components 3 are evenly distributed circumferentially, for example... Figure 3 The four output components 3 shown are orthogonally distributed, with an angle of 90° between any two adjacent output components 3. When there are three output components 3, the angle between any two adjacent output components 3 can be 120°. Alternatively, two of the output components 3 can be positioned at 180°, with the third output component 3 perpendicular to these two. In short, the number and distribution of the output components 3 can be determined according to actual usage requirements. The driven transmission component 3-2 has bevel gear teeth, meaning the driven transmission component 3-2 is a bevel gear, and it is rotatably mounted on the corresponding output shaft 3-1 via bearings. The input component 2 includes a driving bevel gear 2-1, which meshes with the bevel gear teeth of each driven transmission component 3-2. This bevel gear transmission design achieves efficient meshing and transmission between the input component 2 and multiple output components 3, resulting in smooth transmission and low operating noise.

[0075] Reference Figure 7As shown, the multi-output power switching mechanism of this embodiment further includes a safety lock assembly 5 for unlocking or locking the support base 1, so as to realize the rotational switching of the support base 1 and lock it after the switching is completed. Specifically, the safety lock assembly 5 includes a locking member 5-1 and a locking disc 5-2. The locking disc 5-2 is disposed on the support base 1 and has a number of lock holes 5-2a distributed circumferentially around the rotation axis Z1 of the support base 1 at a set angle, which is not less than the number of output components 3. The locking member 5-1 has a bolt 5-1a that can be inserted into or withdrawn from the corresponding lock hole 5-2a. For ease of operation, the locking member 5-1 is a push-pull switch. A return spring 5-3 can also be provided on the locking member 5-1. The return spring 5-3 acts on the locking member 5-1 to keep the bolt 5-1a in contact with the lock hole 5-2a. In use, push the locking component 5-1 downwards to disengage the bolt 5-1a from the locking hole 5-2a. At this time, the support base 1 is unlocked, and it can be rotated flexibly to switch the working head. After switching, release the locking component 5-1. Under the action of the return spring 5-3, the locking component 5-1 automatically moves upward, and the locking hole 5-2a re-engages into the corresponding locking hole 5-2a, thus locking the support base 1. The safety lock component 5 described above has a simple structure, is easy to operate, and provides a firm and reliable lock, ensuring the stability of the power tool. Furthermore, the number and position of the locking holes 5-2a allow for adjustment of the working angle of multiple output components 3, thereby meeting different usage needs. For example, the working head 7 can be adjusted to a 90° position for vertical use, providing better flexibility in some special scenarios.

[0076] like Figure 2 As shown, in this embodiment, the power engagement assembly 4 further includes a switching component 4-2 for moving the clutch component 4-1 to achieve selective single-end output of multiple output components 3. The switching component 4-2 controls the position of the clutch component 4-1, thereby completing the transmission switching of different output components 3. See details... Figures 4 to 6 As shown, the switching component 4-2 includes a cam 4-2-1 disposed within the support 1. The cam 4-2-1 has a cam surface 4-2-1a that contacts and engages with each clutch component 4-1. The cam surface 4-2-1a has a protrusion 4-2-1b for engaging a clutch component 4-1 with a corresponding output component 3. The power engagement component 4 also includes an elastic element 4-2-2 acting on each clutch component 4-1 to maintain the clutch component 4-1 in a disengaged state from the corresponding output component 3. Figure 5 and Figure 6As shown, each clutch component 4-1 maintains a tendency to move towards the cam 4-2-1 under the action of the elastic element 4-2-2. The diameter of the protrusion 4-2-1b is larger than that of other positions on the cam surface 4-2-1a. The clutch component 4-1 that abuts against the protrusion 4-2-1b will be pushed to the first position mentioned above, so that the corresponding output shaft 3-1 and driven transmission component 3-2 engage and transmit power. The other clutch components 4-1 are in the second position mentioned above, so that the corresponding output shaft 3-1 and driven transmission component 3-2 disengage. By using the above-mentioned cam-type switching component, the synchronous control of multiple clutch components can be stably realized, and the structure is simple and compact. Furthermore, in order to facilitate the adjustment of the cam 4-2-1, the cam 4-2-1 is connected to the knob 4-2-3 located on the outside of the support 1 through the camshaft. By rotating the knob 4-2-3, the cam 4-2-1 can be rotated, thereby selecting one of the multiple output components 3 for power output. It is flexible in use and the switching operation is labor-saving. This method of using knob 4-2-3 to control the rotation of cam 4-2-1 is suitable for power tool heads used in the vertical direction. Simply turn knob 4-2-3 to the corresponding direction.

[0077] In another embodiment, as a more simplified structure, the cam 4-2-1 can be fixed in a fixed position relative to the support 1, with the protrusion 4-2-1b of the cam 4-2-1 pointing in a set direction, so that the output component 3, which is switched to that set direction via the support 1, is engaged with the clutch member 4-1. That is, the cam 4-2-1 is fixed relative to the body 6 of the power tool. For example, the cam 4-2-1 can be fixedly connected to the stabilizer 6-3 via a camshaft. In this case, the protrusion 4-2-1b can face the commonly used direction of the power tool, such as the front of the power tool. In this way, when switching between different output components 3, the forward-facing output component 3 can automatically complete the power transmission, reducing the number of operation steps and making it simpler and more convenient to use. Of course, in the aforementioned embodiment where the knob 4-2-3 controls the cam 4-2-1, the knob 4-2-3 can cooperate with the stabilizer 6-3 through a positioning mechanism such as a spring ball. Normally, the knob 4-2-3 is positioned in front of the power tool. When selecting different output components 3, the knob 4-2-3 does not rotate with the support base 1, which can also reduce the number of operation steps.

[0078] catch Figure 4As shown, in order to improve structural stability, a ring groove 4-2-1c is provided on the cam surface 4-2-1a of the cam 4-2-1 to accommodate the tail of each output shaft 3-1. The optical shaft part 3-1-2 of the tail of each output shaft 3-1 is located in the ring groove 4-2-1c. The ring groove 4-2-1c provides clearance space for the moving output shaft 3-1 to avoid interference. At the same time, it can ensure the length of the optical shaft part 3-1-2 at the tail of the output shaft 3-1, prevent the clutch component 4-1 from disengaging from the optical shaft part 3-1-2, and improve the coordination stability between the clutch component 4-1 and the optical shaft part 3-1-2.

[0079] Furthermore, the specific structural details of the multi-output power switching mechanism are described below:

[0080] For ease of assembly, the aforementioned support base 1 preferably adopts an upper and lower shell assembly structure. The upper and lower shells of the support base 1 can be injection molded from high-strength engineering plastics and fixed together with screws. Each output shaft 3-1 is mounted on the support base 1 via bearings and is equipped with a mechanical seal structure to prevent dust from entering the internal transmission structure. The tail end of the output shaft 3-1 extends into the support base 1, and the extension section is divided into two sections: an optical shaft portion 3-1-2 near the tail end and a first joint portion 3A located outside the optical shaft portion 3-1-2. The outer wall of the first joint portion 3A is uniformly provided with first meshing grooves 3-1-1 along the circumference. The insertion end of each first meshing groove 3-1-1 is machined with a guide bevel 3-1-1a to guide the smooth insertion of the meshing teeth 4-1-1.

[0081] The driven transmission component 3-2 has a stepped bore structure. The larger diameter section of the stepped bore is used to install a bearing. The inner ring of the bearing is interference-fitted with the output shaft 3-1, allowing the driven transmission component 3-2 to rotate flexibly relative to the output shaft 3-1. The smaller diameter section of the driven transmission component 3-2's inner bore is the second engagement portion 3B. The second engagement portion 3B has a second engagement groove 3-2-1 with the same number and opposite position as the first engagement groove 3-1-1 along its circumferential direction. The insertion end of the second engagement groove 3-2-1 is also machined with a guide slope 3-2-1a. The guide slope 3-2-1a is inclined in the same direction as the guide slope 3-1-1a of the first engagement groove 3-1-1, ensuring that both can synchronously engage and guide with the engagement teeth 4-1-1.

[0082] The clutch component 4-1 can be made of high-strength alloy steel. A through-hole 4-1-2 is provided at its axial position. The inner diameter of the shaft hole 4-1-2 is clearance-fitted with the outer diameter of the optical shaft portion 3-1-2 of the output shaft 3-1, allowing the clutch component 4-1 to slide smoothly along the axial direction of the optical shaft portion 3-1-2. One end of the clutch component 4-1 has evenly distributed meshing teeth 4-1-1 along its circumference. The number and shape of the meshing teeth 4-1-1 are adapted to the first meshing groove 3-1-1 and the second meshing groove 3-2-1. The ends of the meshing teeth 4-1-1 are machined with guide cone tips 4-1-1a, which form surface contact guidance with the guide slopes 3-1-1a and 3-2-1a of the first and second meshing grooves 3-1-1 and 3-2-1a, further reducing the impact force and risk of jamming during engagement. The other end of the clutch component 4-1 is provided with a ring platform, which is used to abut against the aforementioned elastic element 4-2-2. The aforementioned elastic element 4-2-2 can be a helical spring or a wave spring.

[0083] like Figure 8 and Figure 9 As shown, this embodiment also discloses a power tool. The power tool includes a body 6, on which the aforementioned multi-output power switching mechanism is provided, wherein...

[0084] The body 6 has an operating handle 6-1 and a power assembly 6-2. The support base 1 is rotatably mounted on the body 6, and the input assembly 2 is connected to the power assembly 6-2 via a transmission. The power assembly 6-2 is preferably a geared motor, and the driving bevel gear 2-1 of the input assembly 2 is fixedly mounted on the motor shaft. The aforementioned locking member 5-1 can be installed on the body 6 to achieve unlocking or locking between the support base 1 and the body 6.

[0085] Reference Figure 8 and Figure 9 As shown, the upper part of the machine body 6 is also equipped with a stabilizing frame 6-3. The stabilizing frame 6-3 defines a clearance groove 6-4 for avoiding the non-working head 7. The stabilizing frame 6-3 is rotatably connected to the upper end of the support base 1, which can support the support base 1, making the structure of the support base 1 more stable and able to withstand greater reverse forces. In addition, the machine body 6 is also equipped with a high-low speed switching switch 6-5, which can realize the switching and adjustment of different working speeds to meet the speed requirements of different working states. For convenient and flexible operation, the machine body 6 is also equipped with a battery pack 6-6, which does not require a power cord.

[0086] like Figure 8 and Figure 9 As shown in this embodiment, a power tool can have different working heads 7, such as screwdrivers and drill bits, mounted on multiple output shafts 3-1. Different working heads 7 can be selected for use according to actual needs. The specific operation process is as follows:

[0087] Unlock the support seat: Push the locking component 5-1 down to compress the return spring 5-3, causing the bolt 5-1a to disengage from the lock hole 5-2a of the lock disc 5-2. At this time, the support seat 1 is unlocked and can rotate around its own rotation axis Z1 to switch between different working heads 7.

[0088] Rotary support base: According to the layout of the working head 7, rotate the support base 1 to switch the required working head 7, so that it is rotated to the working position;

[0089] Locking support seat: After the locking component 5-1 is released, under the elastic restoring force of the return spring 5-3, the bolt 5-1a returns to its original position and is locked into the corresponding lock hole 5-2a of the lock disc 5-2, thereby relocking the support seat 1 and ensuring that the support seat 1 will not rotate during operation;

[0090] Transmission position switching: Normally, when the working position is in front of the power tool, the output shaft 3-1, rotated to the working position, and the driven transmission component 3-2 are directly engaged by the cam 4-2-1's protrusion 4-2-1b, thus realizing the power output of this working head 7. Other working heads 7 do not rotate, i.e., the corresponding driven transmission component 3-2 idles. If rotation of the working heads 7 at other angles is required, it can be switched using the knob 4-2-3.

[0091] The aforementioned body 6 can be made of engineering plastics, balancing lightweight and structural strength. The operating handle 6-1 is equipped with a power switch for controlling the start and stop of the power assembly 6-2. The power assembly 6-2 is fixed in the internal mounting cavity of the body 6. Its motor shaft passes through a through hole in the mounting cavity and connects to the driving bevel gear 2-1. The motor shaft and the lower end of the support base 1 are supported by bearings to ensure stable transmission. The driving bevel gear 2-1 can be fixedly connected to the motor shaft of the power assembly 6-2 via a flat key. The power assembly 6-2 is preferably a DC brushless motor, and its output speed can be adjusted via a high / low speed switch 6-5, for example, a high speed of 3000 r / min and a low speed of 1500 r / min. The driving bevel gear 2-1 is located between multiple output shafts 3-1 and simultaneously meshes with the outer ring teeth of two driven transmission components 3-2. The transmission ratio can be determined as needed, and the gears remain engaged throughout rotation, avoiding the jamming problem caused by gear disengagement during reversal in existing technologies.

[0092] [Example 2]

[0093] This embodiment of a multi-output power switching control method, switching mechanism, and power tool has the same basic structure and working principle as Embodiment 1, except that:

[0094] This embodiment is an improved technical solution for a dual-output power switching mechanism and a dual-working-head power tool, wherein the output components 3 are two and arranged coaxially at 180°. For example... Figures 10 to 19 As shown, in this embodiment, the clutch components 4-1 corresponding to the two output components 3 are connected together to form an integral structural component. The switching component 4-2 includes a shift fork 4-2-4 disposed in the support base 1. The shift fork 4-2-4 is connected to the clutch component 4-1. The upper end of the shift fork 4-2-4 is connected to the push button 4-2-5 disposed on the outside of the support base 1. Specifically, the two ends of the clutch component 4-1 are respectively provided with a biting part 4A. The biting part 4A has a meshing tooth 4-1-1. The meshing tooth 4-1-1 can be simultaneously inserted into the first meshing groove 3-1-1 and the second meshing groove 3-2-1 of one side of the output component 3 to realize the transmission connection between the output shaft 3-1 and the corresponding driven transmission component 3-2. When the meshing teeth 4-1-1 at one end of the clutch member 4-1 move into the corresponding first meshing groove 3-1-1 and second meshing groove 3-2-1, the driven transmission member 3-2 at that end transmits power to the output shaft 3-1, and the meshing teeth 4-1-1 at the other end of the clutch member 4-1 disengage from the corresponding first meshing groove 3-1-1 and second meshing groove 3-2-1, thereby causing the driven transmission member 3-2 at that end to idle. Compared with Embodiment 1, the shift fork 4-2-4 directly drives the clutch member 4-1 to move, without the need for additional elastic elements, resulting in a simpler structure.

[0095] In addition, such as Figure 10 and Figure 11 As shown, a positioning cover 1-1 is fixed to the upper part of the support base 1. The push button 4-2-5 is slidably engaged with the positioning cover 1-1, allowing for a push-pull operation on the positioning cover 1-1. This drives the shift fork 4-2-4 to move axially along the clutch component 4-1. The lower end of the shift fork 4-2-4 is semi-circular or U-shaped, and the middle part of the clutch component 4-1 has an annular groove. The lower end of the shift fork 4-2-4 is located in the annular groove of the clutch component 4-1, allowing the clutch component 4-1 to rotate freely. At the same time, the shift fork 4-2-4 can drive the clutch component 4-1 to slide axially. During use, the clutch component 4-1 is always in the direction of the working head 7 pushed close to the working position, which can more intuitively indicate the transmission status and further facilitate the switching operation of the two working heads. Furthermore, the push button 4-2-5 and the positioning cover 1-1 also have a positioning structure for maintaining the clutch component 4-1 in an engaged state with the corresponding output component 3, making it less likely for the push button 4-2-5 to slip accidentally and cause power transmission interruption, thus ensuring operational stability. Specifically, as... Figure 11As shown, the positioning structure includes a spring pin 4-2-5a on the push button 4-2-5 and a positioning groove 1-1a on the side wall of the positioning cover 1-1. The positioning groove 1-1a has at least two locations, corresponding to the engagement positions of the clutch component 4-1 and the output shafts 3-1 at the left and right ends, respectively. When the push button 4-2-5 moves to the first working position, the spring pin 4-2-5a engages with one of the positioning grooves 1-1a for positioning. When the push button 4-2-5 moves to the second working position, the spring pin 4-2-5a engages with the other positioning groove 1-1a for positioning.

[0096] like Figure 16 As shown, in the safety lock assembly 5, four lock holes 5-2a can be set on its lock disc 5-2. The four lock holes 5-2a are orthogonally distributed, so that the two output components 3 can be used not only in front of the power tool, but also in the 90° vertical direction. Of course, by setting the number and distribution position of the lock holes 5-2a, the output components 3 can be used in other set positions, realizing the adjustment of the working head 7's operating angle. Figure 18 and Figure 19 The images show the two working heads 7 in use at the front end of the power tool. When not in use, the working head 7 is located in the clearance groove 6-4 of the stabilizer 6-3, achieving shielding protection.

[0097] The specific operation process of a power tool according to this embodiment is as follows:

[0098] Unlock the support seat: Push the locking component 5-1 down to compress the return spring 5-3, causing the bolt 5-1a to disengage from the lock hole 5-2a of the lock disc 5-2. At this time, the support seat 1 is unlocked and can rotate around its own rotation axis Z1 to switch between different working heads 7.

[0099] Rotating support base: Rotate support base 1 180° so that the working head 7, which was originally in a non-working state, rotates to the working position and the working head 7, which was originally in a working state, rotates to the non-working position. The non-working head 7 just enters the clearance groove 6-4 of the stabilizer 6-3 to achieve shielding protection.

[0100] Locking support seat: After the locking component 5-1 is released, under the elastic restoring force of the return spring 5-3, the bolt 5-1a returns to its original position and is locked into the corresponding lock hole 5-2a of the lock disc 5-2, thereby relocking the support seat 1 and ensuring that the support seat 1 will not rotate during operation;

[0101] Transmission position switching: Then, push the knob 4-2-5 forward, so that the clutch component 4-1 engages between the output shaft 3-1 and the driven transmission component 3-2 on the working side, realizing the transmission of the working head 7 on the working side, while the working head 7 on the other side does not rotate; then, adjust the high and low speed switching switch 6-5 according to the required speed of the working head 7, so that the output speed matches the working speed of the working head 7. Since the driven transmission component 3-2 on the working side is engaged with the output shaft 3-1 through the clutch component 4-1, power is transmitted to the working head 7 through the driven transmission component 3-2 → clutch component 4-1 → output shaft 3-1, realizing drilling, screw tightening and loosening operations, etc.; the driven transmission component 3-2 on the non-working side idles, and the output shaft 3-1 does not rotate, ensuring operational safety.

[0102] As for other structural principles of power tools, such as the forward and reverse rotation control of the output shaft, they are similar to existing technologies, so they will not be explained in detail here.

[0103] This utility model discloses a multi-output power switching mechanism and power tool. Compared with the prior art, it maintains stable gear meshing during the switching of multiple working heads, improving the flexibility of working head reversal operations. Furthermore, the clutch component can rotate together with the support base; after switching multiple working heads, only the clutch component needs to move towards the working head on the working side, simplifying the internal transmission structure and facilitating reversal operations. Moreover, the torque generated by the support base is not transmitted to the clutch component during use, ensuring transmission stability and efficiency. It also has the following technical advantages:

[0104] (1) High transmission stability: Multiple driven transmission components are always engaged with the driving bevel gear. During the reversal process, there is no need for the gear to disengage and re-engage, thus avoiding the jamming problem. The clutch component is guided by the optical shaft and cooperates with the guide cone tip and guide slope, so the meshing process is smooth and the transmission efficiency is high. The bolt of the safety lock component is firmly engaged with the lock hole, and the support seat does not shake during operation, further ensuring transmission stability.

[0105] (2) Highly convenient to operate: The work head can be switched by rotating instead of disassembling and assembling the work head, which greatly shortens the time for changing the work head.

[0106] (3) Safety and reliability: The output shaft on the non-working side is disconnected from the power transmission through the clutch component and remains stationary, effectively avoiding the risk of accidental injury or collision damage.

[0107] (4) Simplified and compact structure: The power switching is achieved by the axial movement of the clutch component. The internal structure is simple, the assembly difficulty is low, and it is conducive to mass production.

[0108] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-output power switching mechanism, comprising a support base (1), wherein the support base (1) is provided with an input component (2), at least two output components (3), and a power engagement component (4) disposed between the input component (2) and each output component (3), characterized in that: Each of the output components (3) includes an output shaft (3-1) and a driven transmission member (3-2) that can be configured to correspond to the output shaft (3-1). The input component (2) can simultaneously drive the driven transmission member (3-2) of each output component (3) to move. The power engagement assembly (4) includes a clutch member (4-1) that can engage with the output shaft (3-1) and driven transmission member (3-2) of the corresponding output assembly (3) to establish power transmission between the output shaft (3-1) and the driven transmission member (3-2). When the clutch member (4-1) engages with a certain output assembly (3), the other output assemblies (3) are in the off state, so as to realize selective single-end output of multiple output assemblies (3).

2. The multi-output power switching mechanism according to claim 1, characterized in that: The output shaft (3-1) has a first engagement portion (3A), the driven transmission member (3-2) has a second engagement portion (3B), and the clutch member (4-1) has an engagement portion (4A). The clutch member (4-1) has a first position and a second position that can be switched between each other. In the first position, the engagement portion (4A) of the clutch member (4-1) engages simultaneously with the first engagement portion (3A) and the second engagement portion (3B) of the corresponding output component (3) to drive the output shaft (3-1) and the driven transmission member (3-2). In the second position, the engagement portion (4A) of the clutch member (4-1) disengages from at least the first engagement portion (3A) or the second engagement portion (3B) of the corresponding output component (3) to disconnect the output shaft (3-1) and the driven transmission member (3-2).

3. The multi-output power switching mechanism according to claim 2, characterized in that: The first engagement portion (3A) has a plurality of first engagement grooves (3-1-1), the second engagement portion (3B) has a plurality of second engagement grooves (3-2-1), and the engagement portion (4A) of the clutch member (4-1) has engagement teeth (4-1-1). The engagement teeth (4-1-1) can be simultaneously inserted into the first engagement grooves (3-1-1) and the second engagement grooves (3-2-1) to realize the transmission connection between the output shaft (3-1) and the corresponding driven transmission member (3-2).

4. The multi-output power switching mechanism according to claim 3, characterized in that: The end of the meshing tooth (4-1-1) has a guide cone tip (4-1-1a), and the insertion ends of the first meshing groove (3-1-1) and the second meshing groove (3-2-1) are both provided with guide slopes (3-1-1a, 3-2-1a).

5. The multi-output power switching mechanism according to claim 4, characterized in that: The output shaft (3-1) has an optical axis portion (3-1-2) extending from its tail end. The clutch member (4-1) has a shaft hole (4-1-2) that slides with the optical axis portion (3-1-2). The clutch member (4-1) switches between the first position and the second position by sliding on the optical axis portion (3-1-2).

6. The multi-output power switching mechanism according to claim 1, characterized in that: Multiple output components (3) are circumferentially distributed around the rotation axis Z1 of the support base (1). The driven transmission component (3-2) has a bevel tooth surface. The input component (2) includes a driving bevel gear (2-1), which meshes with the bevel tooth surface of each driven transmission component (3-2).

7. The multi-output power switching mechanism according to claim 6, characterized in that: It also includes a safety lock assembly (5) for unlocking or locking the support base (1), the safety lock assembly (5) includes a locking member (5-1) and a lock disc (5-2), the lock disc (5-2) is disposed on the support base (1) and has a number of lock holes (5-2a) distributed around the rotation axis Z1 of the support base (1) at a set angle not less than the number of output components (3), the locking member (5-1) has a bolt (5-1a) that can be inserted into or withdrawn from the corresponding lock hole (5-2a).

8. The multi-output power switching mechanism according to any one of claims 1 to 7, characterized in that: The power engagement assembly (4) also includes a switching component (4-2) for moving the clutch component (4-1) to achieve selective single-end output of multiple output components (3).

9. The multi-output power switching mechanism according to claim 8, characterized in that: The switching component (4-2) includes a cam (4-2-1) disposed in the support (1), the cam (4-2-1) having a cam surface (4-2-1a) that contacts and engages with each clutch component (4-1), the cam surface (4-2-1a) having a protrusion (4-2-1b) for engaging a clutch component (4-1) with the corresponding output component (3); the power engagement component (4) also includes an elastic element (4-2-2) acting on each clutch component (4-1) to keep the clutch component (4-1) in a disengaged tendency from the corresponding output component (3).

10. The multi-output power switching mechanism according to claim 9, characterized in that: The cam (4-2-1) is connected to a knob (4-2-3) located on the outside of the support (1) via a camshaft; or, the cam (4-2-1) is fixed in a fixed position relative to the support (1), and the protrusion (4-2-1b) of the cam (4-2-1) points in a set direction so that the output component (3) that is switched to the set direction by the support (1) is engaged with the clutch component (4-1).

11. The multi-output power switching mechanism according to claim 9, characterized in that: The cam surface (4-2-1a) of the cam (4-2-1) is also provided with a ring groove (4-2-1c) for accommodating the tail of each output shaft (3-1).

12. The multi-output power switching mechanism according to claim 8, characterized in that: When there are two output components (3) and they are coaxially arranged at 180°, the clutch components (4-1) corresponding to the two output components (3) are connected together. The switching component (4-2) includes a shift fork (4-2-4) located in the support base (1). The shift fork (4-2-4) is connected to the clutch component (4-1). The upper end of the shift fork (4-2-4) is connected to the push button (4-2-5) located on the outside of the support base (1).

13. The multi-output power switching mechanism according to claim 12, characterized in that: The upper part of the support base (1) is also fixed with a positioning cover (1-1), the push button (4-2-5) is slidably engaged with the positioning cover (1-1), and there is also a positioning structure between the push button (4-2-5) and the positioning cover (1-1) for keeping the clutch component (4-1) engaged with the output component (3) at the corresponding end.

14. A power tool, comprising a body (6), characterized in that: The fuselage (6) is provided with a multi-output power switching mechanism as described in any one of claims 1 to 13, wherein, The body (6) has an operating handle (6-1) and a power assembly (6-2). The support base (1) is rotatably mounted on the body (6). The input assembly (2) is connected to the power assembly (6-2) in a transmission manner.

15. The power tool according to claim 14, characterized in that: The upper part of the body (6) is also provided with a stabilizing frame (6-3), which defines a clearance groove (6-4) for avoiding the working head (7) in a non-working state. The stabilizing frame (6-3) is rotatably connected to the upper end of the support base (1).

Images