Electric tool with rotatable handle

Abstract

The utility model discloses an electric tool with a rotatable handle, which comprises a tool main body and a handle main body, the tool main body is provided with a connecting part, the handle main body is sleeved outside the connecting part, the outer side wall of the connecting part is provided with a circular ring groove, the handle main body is fixedly provided with a convex rib corresponding to the circular ring groove, and the convex rib is inserted into the circular ring groove and is in sliding fit with the circular ring groove. The handle body is rotatably connected to the tool body, a locking piece is arranged on the handle body and can move relative to the handle body, at least two locking grooves are formed in the connecting part, the locking piece is inserted into the corresponding locking groove to lock rotation, when the locking piece is pushed by external force, the locking piece moves to be separated from the locking grooves, and the handle body and the tool body can rotate relative to each other. A user can relatively rotate the handle main body and the tool main body to achieve a more comfortable operation angle and work accuracy.

Description

Technical Field

[0001] This utility model relates to an electric tool, and more particularly to an electric tool with a rotatable handle. Background Technology

[0002] Power tools are handheld or portable mechanized tools powered by an electric motor or electromagnet, which drive the working head through a transmission mechanism to perform operations. Examples include electric drills, angle grinders, and electric hammers. Handheld power tools are characterized by their compact structure, small size, light weight, low vibration, low noise, flexible operation, ease of control and operation, portability, and durability. They can greatly reduce labor intensity, improve work efficiency, and mechanize manual operations, thus being widely used in fields such as construction, home decoration, automobiles, machinery, power, bridges, and gardening, and are also increasingly found in households.

[0003] For example, the angle grinder disclosed in patent CN207402610U includes a working head, a head shell, a machine housing, a handle, and a battery pack. A transmission mechanism is installed inside the head shell, a motor is installed inside the machine housing, the front end of the handle is fixedly connected to the machine housing, and the rear end of the handle is provided with a battery pack connector that can be detachably connected to the battery pack. The machine is operated by holding the handle.

[0004] The handle and housing of existing power tools are relatively fixed, and the angle and position of the tool body and handle body cannot be adjusted. In some special scenarios, it is necessary to change the direction of the working head of the power tool. Generally, the user needs to twist the hand holding the tool to make the working head and working position of the power tool align. This is awkward and inconvenient to use. Utility Model Content

[0005] Since the handle and housing of the aforementioned power tool are relatively fixed and the angle between the tool body and the handle body cannot be adjusted, in some special scenarios it is necessary to change the direction of the working head of the power tool. Generally, the user needs to twist the hand holding the tool to make the working head and the working position relative to each other. This is awkward and inconvenient to use. This utility model provides a power tool with a rotatable handle.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an electric tool with a rotatable handle, including a tool body and a handle body disposed on the tool body. The tool body is provided with a connecting part, and the handle body is sleeved on the outside of the connecting part. The outer side wall of the connecting part is provided with a circular groove. The handle body is fixed with a corresponding protrusion in the circular groove. The protrusion is inserted into the circular groove and slides with the circular groove, so that the handle body is rotatably connected to the tool body. The handle body is provided with a locking member. The locking member can move relative to the handle body. An elastic member is provided between the locking member and the handle body for driving the locking member to move and reset. The connecting part is provided with at least two locking grooves. The locking grooves are used to cooperate with the locking member after the handle body and the tool body are rotated and adjusted. The locking member is inserted into a corresponding locking groove to lock the relative rotation of the handle body and the tool body. When the locking member is pushed by an external force, the locking member moves and disengages from the locking groove, and the handle body and the tool body can rotate relative to each other.

[0007] A further preferred technical solution of this utility model is as follows: the handle body includes a left half shell and a right half shell, which are fixedly connected by screws after being joined together. The left half shell and the right half shell are provided with connecting posts for screw connection. The locking member includes a push button and a locking rod. The locking rod includes an inverted U-shaped rod body for avoiding the connecting post, a locking block connected to the front side of the rod body, and an inserting block connected to the rear side of the rod body. The connecting post passes through the inverted U-shaped rod body. The locking block is inserted into the locking groove. The push button is fixed with a connecting plate inserted into the handle body. The connecting plate is provided with a groove for the inserting block to be inserted. The inserting block is embedded in the groove so that the push button and the locking rod are relatively fixed in the moving direction of the locking member. The left and right sides of the connecting plate are provided with upright limiting plates. A receiving groove is formed between the two limiting plates. The elastic member is a return spring. The return spring is received in the receiving groove. One end of the return spring abuts against the rear side of the rod body, and the other end of the return spring abuts against the handle body.

[0008] A further preferred technical solution of this utility model is as follows: the handle body is provided with a push button groove, the push button is accommodated in the push button groove, one side of the push button groove is provided with an opening for inserting a connecting plate into the handle body, the two sides of the push button groove are provided with guide slide grooves, and the two sides of the push button are provided with guide sliders that slide in cooperation with the guide slide grooves.

[0009] A further preferred embodiment of this utility model is as follows: the shape of the push button is the same as the shape of the push button groove. When the locking member is inserted into the locking groove to lock the handle body and the tool body to rotate relative to each other, the push button is completely accommodated in the push button groove and covers the push button groove.

[0010] A further preferred embodiment of this utility model is that the outer surface of the push button is provided with a groove for inserting a finger.

[0011] A further preferred embodiment of this utility model is that the interlocking block is a T-shaped block, and the shape of the groove is the same as that of the interlocking block.

[0012] A further preferred embodiment of this utility model is as follows: the connecting part is a ring, the ring groove is provided on the outer circumference of the ring, the handle body is provided with an annular rib that slides with the ring groove, and the locking groove is provided on the end of the ring away from the tool body.

[0013] A further preferred embodiment of this utility model is that the number of lock slots is three, with the middle lock slot and the lock slots on both sides forming a 90-degree angle.

[0014] A further preferred technical solution of this utility model is as follows: the handle body includes a gripping part and a front part of the handle. The gripping part is disposed on the rear end of the front part of the handle. The front end of the front part of the handle is rotatably connected to the tool body. A control switch is provided on the bottom of the gripping part. The push button is disposed on the bottom of the front part of the handle and is located in front of the control switch.

[0015] A further preferred technical solution of this utility model is as follows: the tool body includes a housing and a head shell fixedly mounted on the front of the housing. A motor is installed inside the housing, and an output shaft is provided inside the head shell. A cutting tool is fixed at the end of the output shaft. A front cover is fixed to one side of the cutting tool on the head shell. The output shaft passes through the front cover and is fixed to the cutting tool. A transmission component is provided inside the head shell to receive the power of the motor and transmit it to the output shaft. The connecting part is provided on the rear end of the housing.

[0016] Compared with the prior art, the advantage of this utility model is that the handle body is rotatably connected to the tool body. The operator can adjust the relative angle between the handle body and the tool body according to the usage needs, so that the working parts on the tool body can have different orientations when the handle body is held upright, so as to meet the operating habits of different work positions and different users. The user does not need to twist the hand to make the working parts of the power tool relative to the working position, so as to achieve a more comfortable operating angle and work accuracy. After the angle is adjusted, the locking part set on the handle body can be moved and inserted into the locking groove to lock the relative rotation between the handle body and the tool body. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1This is a schematic diagram of a power tool in the locked state.

[0019] Figure 2 A schematic diagram of the internal structure of the handle body of a power tool when it is in the locked state;

[0020] Figure 3 for Figure 2 Enlarged view of a portion at point A;

[0021] Figure 4 A schematic diagram of a power tool in the unlocked state;

[0022] Figure 5 A schematic diagram of the internal structure of the handle body of a power tool when it is in the unlocked state;

[0023] Figure 6 for Figure 5 A local state diagram at point B;

[0024] Figure 7 This is a cross-sectional view of the power tool in the locked state.

[0025] Figure 8 This is a cross-sectional view of the power tool in the unlocked state.

[0026] Figure 9 This is a schematic diagram of the overall structure of the locking component;

[0027] Figure 10 This is a schematic diagram of the locking rod structure;

[0028] Figure 11 This is a schematic diagram of the push button structure;

[0029] Figure 12 This is a structural diagram of the main body of the tool;

[0030] Figure 13 This is a schematic diagram of the handle body.

[0031] Figure 14 This is a schematic diagram of the push button groove.

[0032] In the diagram: 1. Tool body; 2. Handle body; 3. Handle front; 4. Grip; 5. Control switch; 6. Push button; 7. Groove; 8. Push button slot; 9. Housing; 10. Head shell; 11. Front cover; 12. Output shaft; 13. Circular groove; 14. Locking groove; 15. Circuit board assembly; 16. Connecting post; 17. Locking rod; 18. Locking block; 19. Rib; 20. Rod body; 21. Return spring; 22. Limiting plate; 23. Receiving groove; 24. Connecting plate; 25. Fitting block; 26. Guide slider; 27. Insertion groove; 28. Connecting part; 29. ​​First opening; 30. Through groove; 31. Movable groove; 32. Guide slide groove; 33. Second opening. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0034] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0035] Figures 1-14 As shown, a power tool with a rotatable handle includes a tool body 1 and a handle body 2 disposed on the tool body 1. The tool body 1 is provided with a connecting part 28, and the handle body 2 is sleeved on the outside of the connecting part 28. The outer side wall of the connecting part 28 is provided with a circular groove 13. The handle body 2 is fixed with a corresponding protruding rib 19. The protruding rib 19 is inserted into the circular groove 13 and slides in cooperation with the circular groove 13, so that the handle body 2 is rotatably connected to the tool body 1. The power tool can change the orientation of the working part of the power tool when the handle body 2 is held in the correct position by the relative rotation of the handle body 2 and the tool body 1.

[0036] The operator can adjust the relative angle between the handle body 2 and the tool body 1 according to the usage needs, so that the working part on the tool body 1 can have different orientations when the handle body 2 is held in the correct position, so as to meet the operating habits of different work positions and different users. The user does not need to twist the hand to make the working part of the power tool relative to the working position, so as to achieve a more comfortable operating angle and work accuracy.

[0037] The handle body 2 is provided with a locking member, which can move relative to the handle body 2. An elastic member is provided between the locking member and the handle body 2 for driving the locking member to move and reset. The connecting part 28 is provided with at least two locking grooves 14. The locking grooves 14 are used to cooperate with the locking member after the handle body 2 and the tool body 1 are rotated and adjusted. The locking member is inserted into the opposite locking groove 14 to lock the relative rotation of the handle body 2 and the tool body 1, so that the handle body 2 and the tool body 1 will not rotate when the user holds the power tool. After the above angle is adjusted, the locking member provided on the handle body 2 can be moved and inserted into the locking groove 14 to lock the relative rotation between the handle body 2 and the tool body 1.

[0038] Figure 1-8As shown, when it is necessary to rotate the handle body 2 and the tool body 1, push the locking member to one side by hand, so that the locking member overcomes the elastic force of the elastic member and moves out of the locking groove 14. At this time, the handle body 2 and the tool body 1 can rotate relative to each other. By rotating the handle body 2 and the tool body 1 relative to each other, the relative angle between the handle body 2 and the tool body 1 can be adjusted, thereby changing the orientation of the working part of the power tool when the handle body 2 is held upright. When the desired angle position is adjusted, release the hand that pushed the locking member. The locking member loses its force, and the elastic force of the elastic member acts on the locking member to push the locking member to the opposite side, so that the locking member moves and inserts into the locking groove 14 to lock the relative rotation of the handle body 2 and the tool body 1.

[0039] Preferably, the direction of movement of the locking element is parallel to the rotation center line of the handle body 2.

[0040] Figure 12 As shown, preferably, the connecting part 28 is a ring, and a ring groove 13 is provided on the outer circumferential surface of the ring. The handle body 2 is provided with an annular protrusion 19 that slides with the ring groove 13. The locking groove 14 is provided on the end of the ring away from the tool body 1.

[0041] Figure 13 As shown, specifically, the handle body 2 has a first opening 29 for inserting a ring. The ring is inserted into the first opening 29. Two annular grooves 13 are provided on the outer circumference of the ring. The handle body 2 has the same number of raised ribs 19 as the annular grooves 13. The two raised ribs 19 are respectively inserted into the two annular grooves 13, slidingly engaging with the corresponding annular grooves 13. The two sets of annular grooves 13 and raised ribs 19 slidingly engage to connect the handle body 2 and the tool body 1, making the rotational connection between the handle body 2 and the tool body 1 more stable. The handle body 2 and the tool body 1 rotate around the central axis of the ring.

[0042] The aforementioned locking groove 14 extends into an outer annular groove 13. A through groove 30 is provided on the protruding rib 19 corresponding to the annular groove 13 for the locking member to pass through, so that the protruding rib 19 will not obstruct the movement of the locking member.

[0043] The number of locking slots 14 can be set according to the number of angles required by the user. This patent does not limit the number. Preferably, there are three locking slots 14, with the middle locking slot 14 and the two side locking slots 14 forming a 90° angle, so that the power tool has three angular positions. When the locking member is inserted into the middle locking slot 14, the tool body 1 is at a 0° position relative to the handle body 2. When the locking member is inserted into the leftmost locking slot 14, the tool body 1 is at a -90° position relative to the handle body 2. When the locking member is inserted into the rightmost locking slot 14, the tool body 1 is at a 90° position relative to the handle body 2.

[0044] When the power tool is an angle grinder, the tool body 1 includes a housing 9 and a head shell 10 fixedly mounted at the front of the housing 9. A motor is installed inside the housing 9, and an output shaft 12 is provided inside the head shell 10. A cutting tool is fixed to the end of the output shaft 12. A front cover 11 is fixed to the side of the cutting tool on the head shell 10. The output shaft 12 passes through the front cover 11 and is fixed to the cutting tool. A transmission assembly is provided inside the head shell 10 to receive the power of the motor and transmit it to the output shaft 12. A connecting part 28 is provided at the rear end of the housing 9. The handle body 2 is rotatably connected to the connecting part 28. The cutting tool is the working part of the power tool.

[0045] When the tool body 1 is at 0° relative to the handle body 2, hold the handle body 2 upright with the blade facing downwards. When the tool body 1 is at -90° relative to the handle body 2, hold the handle body 2 upright with the blade facing right. When the tool body 1 is at 90° relative to the handle body 2, hold the handle body 2 upright with the blade facing left.

[0046] The handle body 2 includes a left half shell and a right half shell. The left half shell and the right half shell are fixedly connected by screws after being assembled. The left half shell and the right half shell are provided with connecting posts 16 for screw connection. The connecting post 16 on the inner side of the left half shell is provided with a threaded hole, and the connecting post 16 on the inner side of the right half shell is provided with an assembly hole for the screw to pass through. When the left half shell and the right half shell are assembled, the connecting post 16 on the left half shell mates with the connecting post 16 on the right half shell, and the screw passes through the assembly hole and is threadedly connected to the threaded hole, thus fixing the left half shell and the right half shell together.

[0047] The aforementioned annular rib 19 is composed of protrusions on the left and right halves of the shell. Setting the handle body 2 as a left and right half shell facilitates the assembly of the handle body 2 and the tool body 1.

[0048] Figures 9-11 As shown, the locking mechanism includes a push button 6 and a locking lever 17. The locking lever 17 includes an inverted U-shaped lever 20 for avoiding a horizontally placed connecting post 16 inside the handle body 2, a locking block 18 connected to the front side of the lever 20, and a fitting block 25 connected to the rear side of the lever 20. The connecting post 16 passes through the inverted U-shaped lever 20. The locking block 18 is inserted into the locking groove 14. A connecting plate 24 is fixed on the push button 6 and inserted into the handle body 2. The connecting plate 24 is provided with a fitting block. The insert 25 is inserted into the groove 27, and the insert block 25 is embedded in the groove 27 to fix the push button 6 and the locking rod 17 relatively in the direction of movement of the locking member. The left and right sides of the connecting plate 24 are provided with upright limiting plates 22, and the two limiting plates 22 form a receiving groove 23. The elastic element is a return spring 21, which is housed in the receiving groove 23. One end of the return spring 21 abuts against the rear side of the rod body 20, and the other end of the return spring 21 abuts against the handle body 2.

[0049] In order to assemble the return spring 21 and avoid the connecting post 16, the locking part is set to an irregular shape. The irregular locking part is divided into two parts: the locking rod 17 and the push button 6, which facilitates the processing and forming of the locking part. Furthermore, the locking rod 17 and the push button 6 are simply assembled by the interlocking block 25 at one end of the locking rod 17 and the connecting plate 24 on one side of the push button 6.

[0050] The handle body 2 has a stop plate inside that is opposite to the rear side of the rod 20, and one end of the return spring 21 rests against the stop plate.

[0051] Preferably, the interlocking block 25 is a T-shaped block, and the groove 27 has the same shape as the interlocking block 25. By interlocking the T-shaped interlocking block 25 with the groove 27, the locking rod 17 and the push button 6 are fixed in the moving direction of the locking member, and the two will not separate when the locking member moves to lock and unlock.

[0052] Figure 13 As shown, the handle body 2 is provided with a movable groove 31 for the locking rod 17 to slide in. The movable groove 31 guides the sliding of the locking rod 17. The handle body 2 is also equipped with a circuit board assembly 15, which is located above the movable groove 31. The circuit board assembly 15 is positioned above the locking rod 17 to limit the upward movement of the locking rod 17 relative to the connecting plate 24, thus preventing the locking rod 17 from being misaligned with the push button 6 and causing the mating block 25 to disengage from the groove 27.

[0053] Figure 11 , Figure 14 As shown, the handle body 2 is provided with a push button groove 8, and the push button 6 located outside the handle body 2 is housed in the push button groove 8. One side of the push button groove 8 is provided with a second opening 33 for the connecting plate 24 to be inserted into the handle body 2. The push button groove 8 is provided with guide slide grooves 32 on both sides. The push button 6 is provided with guide sliders 26 on both sides that slide in cooperation with the guide slide grooves 32. The guide slide grooves 32 and the guide sliders 26 cooperate to restrict the push button 6 to move in a straight line.

[0054] Figure 1 As shown, the shape of the push button 6 is the same as the shape of the push button groove 8. When the locking member is inserted into the locking groove 14 to lock the handle body 2 and the tool body 1 to rotate relative to each other, the push button 6 is completely contained in the push button groove 8 and covers the push button groove 8, making the outer surface of the handle body 2 look more complete and beautiful, and will not be uneven due to the setting of the push button 6.

[0055] The outer surface of the push button 6 is provided with a groove 7 for the finger to insert, which makes it easier for the user to push the push button 6.

[0056] The handle body 2 includes a grip part 4 and a handle front part 3. The grip part 4 is located on the rear end of the handle front part 3. The front end of the handle front part 3 is rotatably connected to the tool body 1. A control switch 5 is provided on the bottom of the grip part 4. A push button 6 is located on the bottom of the handle front part 3 and in front of the control switch 5. This position allows the user to push the push button 6 to unlock by pressing the control switch 5 while gripping the handle. This makes the operation more convenient and allows the user to rotate and adjust the handle.

[0057] The power tool with a rotatable handle provided by this utility model has been described above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A power tool with a rotatable handle, comprising a tool body and a handle body arranged on the tool body, characterized in that, The tool body has a connecting part, and the handle body is fitted onto the outside of the connecting part. The outer wall of the connecting part has an annular groove, and the handle body has a corresponding protruding rib fixed on it. The protruding rib is inserted into the annular groove and slides in cooperation with it, so that the handle body is rotatably connected to the tool body. The handle body has a locking member that can move relative to the handle body. An elastic member is provided between the locking member and the handle body for driving the locking member to move and reset. The connecting part has at least two locking slots. The locking slots are used to engage with the locking member after the handle body and the tool body are rotated and adjusted. The locking member is inserted into one of the opposite locking slots to lock the relative rotation of the handle body and the tool body. When the locking member is pushed by an external force, it moves out of the locking slot, and the handle body and the tool body can rotate relative to each other.

2. The power tool with a rotatable handle according to claim 1, wherein, The handle body includes a left half shell and a right half shell, which are fixedly connected by screws after being joined together. The left half shell and the right half shell are provided with connecting posts for screw connection. The locking component includes a push button and a locking rod. The locking rod includes an inverted U-shaped rod body for avoiding the connecting post, a locking block connected to the front side of the rod body, and a fitting block connected to the rear side of the rod body. The connecting post passes through the inverted U-shaped rod body. The locking block is inserted into the locking groove. The push button is fixed with a connecting plate inserted into the handle body. The connecting plate is provided with a groove for the fitting block to be inserted. The fitting block is embedded in the groove so that the push button and the locking rod are relatively fixed in the moving direction of the locking component. The left and right sides of the connecting plate are provided with upright limiting plates, and a receiving groove is formed between the two limiting plates. The elastic component is a return spring. The return spring is housed in the receiving groove. One end of the return spring abuts against the rear side of the rod body, and the other end of the return spring abuts against the handle body.

3. The power tool of claim 2, wherein the handle is rotatable about the longitudinal axis of the handle. The handle body is provided with a push button groove, the push button is housed in the push button groove, one side of the push button groove is provided with an opening for inserting a connecting plate into the handle body, the push button groove is provided with guide slide grooves on both sides, and the push button is provided with guide sliders that slide in cooperation with the guide slide grooves on both sides.

4. The power tool of claim 3, wherein the handle is rotatable about the longitudinal axis of the handle. The push button has the same shape as the push button groove. When the locking member is inserted into the locking groove to lock the handle body and the tool body to rotate relative to each other, the push button is completely housed in the push button groove and covers the push button groove.

5. The power tool of claim 2, wherein the handle is rotatable about an axis of rotation that is parallel to the longitudinal axis of the tool body. The outer surface of the push button has a groove for inserting a finger.

6. The power tool of claim 2, wherein the handle is rotatable about an axis of rotation that is parallel to the longitudinal axis of the tool body. The interlocking block is a T-shaped block, and the groove has the same shape as the interlocking block.

7. The power tool of claim 1, wherein the handle is rotatable about an axis of rotation. The connecting part is a ring, and the ring groove is provided on the outer circumference of the ring. The handle body is provided with an annular protrusion that slides in the ring groove. The locking groove is provided on the end of the ring away from the tool body.

8. The power tool of claim 1, wherein, The lock slot has three slots, with the middle slot and the two side slots forming a 90-degree angle.

9. The power tool of claim 2, wherein, The handle body includes a grip portion and a handle front portion. The grip portion is located on the rear end of the handle front portion, and the front end of the handle front portion is rotatably connected to the tool body. A control switch is provided on the bottom of the grip portion, and the push button is located on the bottom of the handle front portion and in front of the control switch.

10. The power tool of claim 1, wherein, The tool body includes a housing and a head shell fixedly mounted at the front of the housing. A motor is installed inside the housing, and an output shaft is provided inside the head shell. A cutting tool is fixed to the end of the output shaft. A front cover is fixed to one side of the cutting tool on the head shell. The output shaft passes through the front cover and is fixed to the cutting tool. A transmission assembly is provided inside the head shell to receive the power of the motor and transmit it to the output shaft. The connecting part is provided at the rear end of the housing.

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