Mode switching structure and double-head electric tool

Abstract

The embodiments of the present application relate to the technical field of electric tools, and disclose a mode switching structure and a double-headed electric tool. The mode switching structure includes a switching member and a first connecting component. The switching member can move between a first position and a second position. The first connecting component includes a first active member for receiving power, and a first driven member connected to the switching member, and a plurality of first protrusions staggered from each other are respectively provided on surfaces of the first active member and the first driven member that are close to each other. When the switching member is in the first position, the first active member and the first driven member abut against each other via the plurality of first protrusions to rotate synchronously, and when the switching member is in the second position, the first active member is separated from the first driven member. The mode switching structure and the double-headed electric tool provided by the embodiments of the present application can achieve stable transmission of power.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electric tools, and in particular to a mode switching structure and a double-head electric tool. Background Art

[0002] Depending on the type of output parts, electric tools can achieve different functions such as fastening, cutting, polishing, grinding, drilling, etc., meeting the operation requirements in different construction scenarios. Among them, double-headed electric tools integrate multiple output parts together, and can complete specific construction operations through different output parts. Therefore, double-headed electric tools have multi-functional characteristics.

[0003] In order to achieve different construction operations on double-ended electric tools, it is necessary to control the power output to ensure that the required output parts can be used correctly. Therefore, how to achieve stable power transmission is an important issue. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a mode switching structure and a double-headed electric tool that can achieve stable power transmission.

[0005] In order to solve the above technical problems, an embodiment of the present application provides a mode switching structure. The mode switching structure includes a switching member and a first connecting component. The switching member can move between a first position and a second position. The first connecting component includes a first active member for receiving power, and a first driven member connected to the switching member, and a plurality of first protrusions staggered from each other are respectively provided on surfaces of the first active member and the first driven member that are close to each other. When the switching member is in the first position, the first active member and the first driven member abut against each other via the plurality of first protrusions to rotate synchronously, and when the switching member is in the second position, the first active member is separated from the first driven member.

[0006] The embodiment of the present application also provides a double-headed electric tool, which includes a housing, a driving member, a movable first output member, and the above-mentioned mode switching structure. The driving member is provided with a first output shaft. The switching member of the mode switching structure is movably arranged on the housing, and the first active member of the mode switching structure is connected to the first output shaft. The first driven member of the mode switching structure is movably connected to the first output member.

[0007] In the mode switching structure and double-headed electric tool provided by the embodiments of the present application, any one of the connecting components that connect the two shafts has a protruding rib structure. During operation, the ribs of one of the connecting components cooperate with the ribs of the other in the axial direction for transmission. In this way, since there is no radial cooperation, even if the two connected shafts have a certain eccentricity, it will not cause serious collision. This effectively improves the noise and vibration problems caused by the eccentricity of the two connected shafts, and realizes the stable transmission of power.

[0008] In some embodiments, the switching member is provided with a first connecting member, and the first connecting member is slidably connected to the first driven member.

[0009] In some embodiments, the first follower is provided with a first annular groove, and the first connecting member is inserted into the first annular groove.

[0010] In some embodiments, the mode switching structure further includes a connecting rod, one end of which is connected to the switching member, and the other end of which is connected to the first connecting member.

[0011] In some embodiments, the mode switching structure also includes a second connecting component, which includes a second active member for receiving power, and a second driven member connected to the switching member; when the switching member is in the first position, the second active member is separated from the second driven member, and when the switching member is in the second position, the second active member is engaged with the second driven member to rotate synchronously.

[0012] In some embodiments, the first connecting component and the second connecting component are arranged along the same direction, and there is a gap between the first connecting component and the second connecting component.

[0013] In some embodiments, the switching member is provided with a second connecting member, and the second connecting member is slidably connected to the second driven member.

[0014] In some embodiments, the second follower is provided with a second annular groove, and the second connecting member is inserted into the second annular groove.

[0015] In some embodiments, the switching member includes a main body portion and a pushing portion connected to the main body portion, and a middle portion of the pushing portion in the moving direction protrudes from other portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1is a schematic structural diagram of a mode switching structure provided in some embodiments of the present application when a switching member is in a first position;

[0018] Figure 2 yes Figure 1 A schematic diagram of a local enlarged structure of a first connecting component in the mode switching structure shown;

[0019] Figure 3 is a schematic structural diagram of a mode switching structure provided in some embodiments of the present application when the switching member is in the second position;

[0020] Figure 4 yes Figure 3 A schematic diagram of a local enlarged structure of a first connecting component in the mode switching structure shown;

[0021] Figure 5 is a structural schematic diagram of the first connection component in the mode switching structure provided in some embodiments of the present application when assembled;

[0022] Figure 6 is a schematic diagram of the three-dimensional structure of a double-headed electric tool provided in some embodiments of the present application;

[0023] Figure 7 is a schematic cross-sectional structural diagram of a double-headed electric tool provided in some embodiments of the present application working in a first mode;

[0024] Figure 8 It is a schematic cross-sectional structural diagram of a double-headed power tool provided in some embodiments of the present application working in the second mode. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] With the continuous emergence of various types of power tools, the convenience of operation in different construction scenarios has been greatly improved. The operator only needs to control the power tool to complete the corresponding construction operations with the help of the power tool. Usually, a type of power tool is equipped with an output part, such as an electric wrench equipped with a socket or a screwdriver bit, an electric file equipped with a file, and an electric grinder equipped with a grinding head. During the use of these power tools, the corresponding construction operations are completed through specific output parts. This also means that different power tools are needed to complete a variety of construction operations. For this reason, the operator has to take different power tools back and forth. At the same time, multiple power tools will also take up more space.

[0029] Therefore, in order to achieve multiple construction operations in the same power tool, double-head power tools have emerged. Double-head power tools are equipped with multiple output parts. For example, they can be equipped with a screwdriver bit and a grinding bit at the same time. The screwdriver bit can be used for fastening operations, and the grinding bit can be used for grinding. This enriches the functions of the power tool and is conducive to improving the operator's experience.

[0030] In double-headed power tools, a mode switching structure is provided so that the operator can control the double-headed power tool to perform the required construction operation. That is, the corresponding output parts are controlled to move and work in the corresponding mode. Through the mode switching structure, it is possible to control whether the power of the driving parts such as motors and electric motors is transmitted to a specific output part. The stability of the mode switching structure in the process of transmitting power will affect the vibration, noise and other phenomena during transmission.

[0031] Existing double-ended electric tools use couplings and shaft extension ribs to transmit speed and torque. The coupling has ribs inside that can wrap around the recessed parts on the two ends of the shaft extensions to be connected. This form requires high positioning accuracy at both ends. When there is eccentricity or angle difference between the two ends of the shaft extensions, severe collisions at the coupling will cause unexpected vibration and noise. Therefore, a connection structure is needed that can solve the vibration and noise problems caused by the eccentricity of the two ends while switching the modes of the double-ended electric tool.

[0032] To this end, some embodiments of the present application provide a mode switching structure. In the mode switching structure, the connecting components that connect the two shafts are respectively provided with a protruding rib structure. When working, the ribs of one of the connecting components cooperate with the ribs of the other in the axial direction for transmission. In this way, since there is no radial cooperation, even if there is a certain eccentricity between the motor output shaft and the rotating shaft of the output member, it will not cause a serious collision. Thereby effectively improving the noise and vibration problems caused by the eccentricity between the power output shaft and the rotating shaft of the output member.

[0033] Combine the following Figures 1 to 5 The mode switching structure provided by some embodiments of the present application is described.

[0034] like Figures 1 to 5 As shown, a mode switching structure provided in some embodiments of the present application includes a switching member 11 and a first connecting component 12. The switching member 11 can move between a first position and a second position. The first connecting component 12 includes a first active member 121 for receiving power, and a first driven member 122 connected to the switching member 11, and a plurality of first protrusions 123 staggered from each other are respectively provided on surfaces of the first active member 121 and the first driven member 122 that are close to each other. When the switching member 11 is in the first position, the first active member 121 and the first driven member 122 abut against each other via the plurality of first protrusions 123 to rotate synchronously, and when the switching member 11 is in the second position, the first active member 121 and the first driven member 122 are separated.

[0035] The switching member 11 is a component for controlling the switching process in the mode switching structure. By controlling the movement of the switching member 11, the first connecting component 12 can be switched between the connected state and the disconnected state, thereby controlling whether the first connecting component 12 transmits power to the corresponding output member.

[0036] The first connecting assembly 12 serves to connect or disconnect the output shaft of the driving member 22 and the rotating shaft 231 of the first output member 23. The first active member 121 is close to the output end of the driving member 22, and is used to connect with the output shaft of the driving member 22 to receive the power generated by the driving member 22 when it is turned on. The first driven member 122 is close to the first output member 23, and is used to connect with the rotating shaft 231 of the output member 23, and transmit the power received by the first active member 121 to the output member, and control the movement of the output member to perform corresponding construction operations.

[0037] A plurality of first protrusions 123 are respectively arranged on the surfaces of the first active member 121 and the first follower 122 that are close to each other, forming a rib structure. In addition, the first protrusions 123 arranged on the surface of the first active member 121 and the first protrusions 123 arranged on the surface of the first follower 122 are in a staggered state. When the first follower 122 is driven by the switching member 11 to contact the first active member 121, the first protrusions 123 on the surface of the first follower 122 and the first protrusions 123 on the surface of the first active member 121 are engaged with each other, thereby rotating synchronously. The synchronous rotation of the first follower 122 and the first active member 121 can transmit power in the axial direction, that is, the moving direction of the switching member 11, so as to drive the output member located at the end of the power transmission to move to perform the corresponding construction operation.

[0038] In the mode switching structure provided in some embodiments of the present application, any one of the connecting components that connect the two shafts has a protruding rib structure. During operation, the ribs of one of the connecting components cooperate with the ribs of the other in the axial direction for transmission. In this way, since there is no radial cooperation, even if the two connected shafts have a certain eccentricity, it will not cause serious collision. This effectively improves the noise and vibration problems caused by the eccentricity of the two connected shafts, and realizes the stable transmission of power.

[0039] In some embodiments, the switching member 11 may be provided with a first connecting member 111 , and the first connecting member 111 is slidably connected to the first follower 122 .

[0040] The first connecting member 111 is disposed on the switching member 11 and moves synchronously with the switching member 11. When the switching member 11 and the first connecting component 12 are at a certain distance, the connection between the switching member 11 and the first follower 122 can be realized by disposing the first connecting member 111. In addition, the first connecting member 111 can slide relative to the first follower 122 when the first follower 122 rotates. Thus, the position of the first follower 122 is changed without affecting the normal rotation of the first follower 122.

[0041] like Figures 1 to 4 As shown, the first follower 122 may be provided with a first annular groove 1221 , and the first connecting member 111 is inserted into the first annular groove 1221 .

[0042] The first connecting member 111 can be formed by bending a long strip of material, and the middle part of the first connecting member 111 is connected to the switching member 11, and the two ends of the first connecting member 111 are inserted along the two sides of the first annular groove 1221. In actual situations, the first connecting member 111 can be made of metal material, such as a steel fork. The part of the first connecting member 111 inserted into the first annular groove 1221 can roughly cover the first annular groove 1221, which can facilitate disassembly and realize synchronous movement between the two.

[0043] In some embodiments, the mode switching structure may further include a connecting rod 124 , one end of the connecting rod 124 is connected to the switching member 11 , and the other end of the connecting rod 124 is connected to the first connecting member 111 .

[0044] That is, the switching member 11 and the first connecting member 111 can be connected via the connecting rod 124. When the switching member 11 is far away from the first connecting assembly 12, the connecting rod 124 can be arranged between the switching member 11 and the first connecting assembly 12, so as to realize the connection between the switching member 11 and the first follower 122 without occupying too much space. When the connecting rod 124 is connected to the first connecting member 111, a groove can be arranged at the end of the connecting rod 124, so that part of the first connecting member 111 is placed in the groove.

[0045] like Figure 1 and Figure 3 As shown, the mode switching structure may further include a second connecting assembly 13, the second connecting assembly 13 including a second active member 131 for receiving power, and a second driven member 132 connected to the switching member 11. When the switching member 11 is in the first position, the second active member 131 is separated from the second driven member 132, and when the switching member 11 is in the second position, the second active member 131 is engaged with the second driven member 132 to rotate synchronously.

[0046] The second connecting component 13 can also play the role of connecting two shafts, so as to transmit power between two shafts that are not directly connected. Similar to the first connecting component 12, the second active member 131 and the second driven member 132 can engage with each other to rotate synchronously. The surface of the second driven member 132 close to the second active member 131 is provided with a plurality of second protrusions 133, and the edge of the second active member 131 is provided with a plurality of grooves 1311. When the switching member 11 is in the second position, the second protrusion 133 on the second driven member 132 is inserted into the groove 1311 on the edge of the second active member 131, and engages with the second active member 131. In actual situations, multiple second protrusions 133 can also be provided on the surface of the second active member 131 close to the second driven member 132, and synchronous rotation can be achieved through the abutment between the second protrusions 133.

[0047] By connecting the two connection components to the same switching member 11, it is convenient for the operator to switch the working mode. During the operation, the operator only needs to move the switching member 11 to realize whether the power is transmitted through the first connection component 12 or the second connection component 13. In this way, the double-headed electric tool is controlled to work in different working modes.

[0048] like Figure 1 and Figure 3 As shown, the first connecting component 12 and the second connecting component 13 can be arranged along the same direction, and there is a gap between the first connecting component 12 and the second connecting component 13.

[0049] The interval between the two connecting components provides space for the arrangement of the driving member 22, and the driving member 22 can be arranged between the two connecting components. In addition, the driving member 22 can be provided with output shafts in the directions of different connecting components, so that the two connecting components can transmit the power of the driving member 22 to the corresponding output member at the end of the power transmission in a specific working mode.

[0050] In some embodiments, the switching member 11 may be provided with a second connecting member 112 , and the second connecting member 112 is slidably connected to the second follower 132 .

[0051] The second connecting member 112 is disposed on the switching member 11 and moves synchronously with the switching member 11. When the switching member 11 and the second connecting assembly 13 are at a certain distance, the connection between the switching member 11 and the second follower 132 can be realized by disposing the second connecting member 112. In addition, the second connecting member 112 can slide relative to the second follower 132 when the second follower 132 rotates. Thus, the position of the second follower 132 can be changed without affecting the normal rotation of the second follower 132.

[0052] like Figure 1 and Figure 3 As shown, the second follower 132 may be provided with a second annular groove 1321 , and the second connecting member 112 is inserted into the second annular groove 1321 .

[0053] The second connecting member 112 can be formed by bending a long strip of material, and the middle part of the second connecting member 112 is connected to the switching member 11, and the two ends of the second connecting member 112 are inserted along the two sides of the second annular groove 1321. In actual situations, the second connecting member 112 can be made of metal material, such as a steel fork. The part of the second connecting member 112 inserted into the second annular groove 1321 can roughly cover the second annular groove 1321, which can facilitate disassembly and realize synchronous movement between the two.

[0054] like Figure 1 and Figure 3As shown, the switching member 11 may include a main body 101 and a pushing portion 102 connected to the main body 101 , wherein the middle portion of the pushing portion 102 in the moving direction protrudes from other portions.

[0055] The main body 101 is the part that connects the switching member 11 with the connecting assembly, and can move along a predetermined path to move between the first position and the second position. The pushing part 102 is the part of the switching member 11 that the operator controls to move. The middle part of the pushing part 102 protrudes from the other parts, so that the pushing part 102 forms a shape with a high middle and low sides, so that the operator can push it in different directions to change the position of the switching member 11.

[0056] like Figures 6 to 8 As shown, some embodiments of the present application also provide a double-headed electric tool, which includes a housing 21, the housing 21 is provided with a driving member 22, a movable first output member 23, and the above-mentioned mode switching structure. The driving member 22 is provided with a first output shaft 221. The switching member 11 of the mode switching structure is movably arranged on the housing 21, and the first active member 121 of the mode switching structure is connected to the first output shaft 221. The first driven member 122 of the mode switching structure is movably connected to the first output member 23.

[0057] The first follower 122 can be driven by the switching member 11 to abut against or separate from the first active member 121, thereby realizing the operation control of the first output member 23. By designing a protruding rib structure between the first follower 122 and the first active member 121 for engagement, the noise and vibration problems caused by the eccentricity of the two connected shafts can be effectively improved, and stable power transmission can be realized.

[0058] In addition, the mode switching structure may further include a second connecting component 13, the driving component 22 is further provided with a second output shaft 222, and the housing 21 is further provided with a movable second output component 24. The second active component 131 is connected to the second output shaft 222, and the second driven component 132 is movably connected to the second output component 24. Thus, the operation control of another output component is realized through the second connecting component 13. By controlling the position of the switching component 11 between the second driven component 132 and the second output component 24, the double-headed electric tool can be switched between Figure 7 The double-ended power tool can be operated in the first mode shown, or in Figure 8 The second mode is shown.

[0059] In actual situations, when a reducer is required to be set at the power front end of the second output member 24 for deceleration, the second follower 132 can be movably connected to the rotating shaft, and a reducer can be set between the rotating shaft and the second output member 24 for transmission. Thus, the rotating shaft is driven to rotate by the second follower 132, and then the motion is decelerated by the reducer and transmitted to the second output member 24. The reducer can be a gear reduction mechanism. At the same time, the switching member 11 can be provided with an annular matching member connected to the connecting rod 124 to avoid the space where the reducer is located.

[0060] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A mode switching structure, characterized in that: include: A switching member, movable between a first position and a second position; A first connecting assembly includes a first active member for receiving power, and a first driven member connected to the switching member, wherein a plurality of first protrusions staggered from each other are respectively arranged on surfaces of the first active member and the first driven member close to each other; When the switching member is located at the first position, the first active member and the first driven member abut against each other via the plurality of first protrusions to rotate synchronously. When the switching member is located at the second position, the first active member and the first driven member are separated.

2. The mode switching structure according to claim 1, characterized in that: The switching member is provided with a first connecting member, and the first connecting member is slidably connected to the first driven member.

3. The mode switching structure according to claim 2, characterized in that: The first follower is provided with a first annular groove, and the first connecting member is inserted into the first annular groove.

4. The mode switching structure according to claim 2, characterized in that: It also includes a connecting rod, one end of which is connected to the switching member, and the other end of which is connected to the first connecting member.

5. The mode switching structure according to claim 1, characterized in that: Also included is a second connecting assembly, the second connecting assembly including a second active member for receiving power, and a second driven member connected to the switching member; When the switching member is located at the first position, the second active member is separated from the second driven member, and when the switching member is located at the second position, the second active member is engaged with the second driven member to rotate synchronously.

6. The mode switching structure according to claim 5, characterized in that: The first connecting component and the second connecting component are arranged along the same direction, and there is a gap between the first connecting component and the second connecting component.

7. The mode switching structure according to claim 5, characterized in that: The switching member is provided with a second connecting member, and the second connecting member is slidably connected to the second driven member.

8. The mode switching structure according to claim 7, characterized in that: The second follower is provided with a second annular groove, and the second connecting member is inserted into the second annular groove.

9. The mode switching structure according to claim 1, characterized in that: The switching member comprises a main body and a pushing portion connected to the main body, wherein a middle portion of the pushing portion in a moving direction protrudes from other portions.

10. A double-head electric tool, characterized in that: It includes a shell, the shell is provided with a driving member, a movable first output member, and a mode switching structure according to any one of claims 1 to 9; the driving member is provided with a first output shaft; the switching member of the mode switching structure is movably arranged on the shell, and the first active member of the mode switching structure is connected to the first output shaft; the first driven member of the mode switching structure is movably connected to the first output member.

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