Damping handle of electric tool

Abstract

The utility model discloses a shock-absorbing handle of an electric tool, which comprises a handle main body, a handle shell and a screw, the handle main body is provided with a first connecting part, the handle shell is provided with a mounting groove, the handle main body is inserted into the mounting groove, a shock-absorbing sleeve is elastically supported between the handle main body and the handle shell, and the shock-absorbing sleeve is sleeved on the outer side of the handle main body. A first through hole communicated with the inner bottom wall of the mounting groove is formed in the bottom of the handle shell, a threaded hole is formed in the bottom end of the handle body, a second through hole opposite to the first through hole and the threaded hole is formed in the lower bottom of the damping sleeve, a screw sequentially penetrates through the first through hole and the second through hole to be in threaded connection with the threaded hole, and the screw and the handle body are connected into a whole. The whole handle and the handle shell can move relatively to extrude the damping sleeve between the whole handle and the handle shell, vibration transmitted to the handle shell by a machine body of the electric tool through the handle body can be slowed down and absorbed by the damping sleeve, and therefore the damping effect is achieved.

Description

Technical Field

[0001] This utility model relates to an auxiliary handle for power tools, and more particularly to a shock-absorbing handle for power tools. Background Technology

[0002] Common power tools such as electric drills, angle grinders, hammer drills, and impact wrenches often have handles designed for single-handed gripping. When the output torque exceeds the torque that can be controlled with one hand, a wringing or twisting phenomenon often occurs, causing injury to the arm. Therefore, power tools are usually equipped with an additional auxiliary handle, which is held by the other hand to increase the counteracting torque and offset the excess output torque.

[0003] For example, the shock-absorbing structure of the handle in an electric hammer or hammer drill disclosed in patent CN201529977U includes the column and handle of the electric hammer or hammer drill. The main body is composed of a housing and a motor housing. The upper and lower ends of the handle are connected to the housing and the motor housing respectively. An auxiliary handle for hand gripping is fixed at the front of the main body.

[0004] The connection between the existing auxiliary handle and the machine body is generally a rigid connection, such as being directly connected to the machine body by threads or being clamped to the machine body by clamps. When the motor of the power tool is working at high speed, it will generate severe vibration. This vibration is transmitted to the operator through the auxiliary handle, causing soreness, numbness and fatigue in the hand. When the operator works for a long time, it will not only reduce work efficiency, but also cause harm to the human body. Utility Model Content

[0005] Based on the fact that the connection between the existing auxiliary handle and the machine body is generally a rigid connection, the power tool will generate severe vibration when the motor rotates at high speed. This vibration is transmitted to the operator through the auxiliary handle, causing soreness, numbness and fatigue in the hand. This utility model provides a shock-absorbing handle for power tools.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a shock-absorbing handle for an electric tool, comprising a handle body, a handle housing, and a screw. The handle body is provided with a first connecting part for connecting with the body of the electric tool. The handle housing is provided with a mounting groove, into which the handle body is inserted. The top of the handle housing is provided with a socket for inserting the handle body into the mounting groove. The mounting groove has an inner bottom wall opposite to the socket, which is used to abut the handle body when it is inserted. A shock-absorbing sleeve is elastically supported between the handle body and the handle housing. The shock-absorbing sleeve is fitted on the outside of the handle body. The shock-absorbing sleeve has a lower bottom supporting the bottom end of the handle body and the inner bottom wall of the mounting groove, and a sleeve side wall supporting the side wall of the handle body and the inner side wall of the mounting groove. The bottom of the handle housing is provided with a first through hole communicating with the inner bottom wall. The bottom end of the handle body is provided with a threaded hole, and the lower bottom is provided with a second through hole opposite to the first through hole and the threaded hole. The screw passes through the first through hole, the second through hole, and the threaded hole in sequence and is threadedly connected. The screw and the handle body are connected as a whole. The whole and the handle housing can move relative to each other to compress the shock-absorbing sleeve between them.

[0007] A further preferred embodiment of this utility model is as follows: the handle body includes a connecting post for insertion into the mounting groove and a seat connected to the upper end of the connecting post; the threaded hole is located on the end face of the lower end of the connecting post; the shock-absorbing sleeve is correspondingly sleeved on the outside of the connecting post; and when the connecting post is inserted into the mounting groove, the seat is located above the handle housing.

[0008] A further preferred embodiment of this utility model is as follows: the top of the handle housing is provided with an annular stop for the hand to rest against when gripping, the bottom of the seat is provided with a pressing ring extending towards one side of the annular stop, the pressing ring surrounds the outside of the connecting column, and the shock-absorbing sleeve is provided with an outer ring edge that is elastically supported between the pressing ring and the annular stop.

[0009] A further preferred embodiment of this utility model is as follows: an annular insertion groove is formed between the pressure ring and the connecting post, and an annular insertion part that engages with the insertion groove is protruding on the upper surface of the outer ring edge.

[0010] A further preferred technical solution of this utility model is as follows: the base and the connecting column are two separate and independent components. The first connecting part includes an elastic locking ring. The upper end of the base has a groove. The lower end of the elastic locking ring extends into the groove and gradually narrows due to the pressure of the inner walls on both sides of the groove. The upper end of the elastic locking ring is located outside the groove and forms a ring opening for fitting with the body of the power tool. The lower end of the elastic locking ring extending into the groove has a connecting hole. The bottom of the base has a through hole communicating with the groove. The upper end of the connecting column has a mounting hole. A nut is installed in the mounting hole. The bolt passes through the connecting hole, the through hole and the nut in the mounting hole in sequence and is threadedly connected. Rotating the connecting column relative to the base causes the bolt to move up and down along the thread on the inner side of the nut to adjust the size of the ring opening.

[0011] A further preferred embodiment of this utility model is as follows: the connecting column is composed of two cylinders with different diameters, the diameter of the upper first cylinder is larger than the diameter of the lower second cylinder, an annular step is formed between the outer wall of the first cylinder and the outer wall of the second cylinder, and the nut is at least partially disposed in the first cylinder.

[0012] A further preferred technical solution of this utility model is as follows: a washer is provided between the screw and the bottom of the handle housing. The washer is placed between the head of the screw and the bottom of the handle housing. A third through hole is provided on the washer for the screw to pass through. The inner walls of the first through hole, the second through hole and the third through hole are all provided with gaps between them and the screw to allow the screw to move within them.

[0013] A further preferred embodiment of this utility model is that the first through hole, the second through hole, and the third through hole are oblong holes.

[0014] A further preferred embodiment of this utility model is: the bottom of the handle housing is provided with a receiving groove for accommodating the head of the screw and the washer, and the first through hole is disposed in the receiving groove.

[0015] A further preferred embodiment of this utility model is that the outer wall of the handle housing is provided with anti-slip texture.

[0016] Compared with the prior art, the advantages of this utility model are that a shock-absorbing sleeve is elastically supported between the handle body and the handle shell. The shock-absorbing sleeve is fitted on the outside of the handle body. The bottom of the handle shell is provided with a first through hole communicating with the inner bottom wall. The bottom end of the handle body is provided with a threaded hole, and the bottom surface is provided with a second through hole opposite to the first through hole and the threaded hole. A screw passes through the first through hole, the second through hole and the threaded hole and is threadedly connected. The screw and the handle body are connected as a whole. The whole and the handle shell can move relative to each other to compress the shock-absorbing sleeve. The shock-absorbing handle is connected to the body of the power tool through a first connecting part on the handle body. During the use of the power tool, the user holds the handle shell. The vibration transmitted from the body of the power tool to the handle shell through the handle body is slowed down and absorbed by the shock-absorbing sleeve, thereby achieving a shock-absorbing effect, reducing hand soreness and fatigue from holding the handle shell, improving work efficiency and comfort. 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 1 Schematic diagram of the shock absorber handle Figure 1 ;

[0019] Figure 2 Schematic diagram of the shock absorber handle Figure 2 ;

[0020] Figure 3 This is a breakdown diagram of the screws, washers, and shock absorber handle.

[0021] Figure 4 This is a schematic diagram of the handle housing.

[0022] Figure 5 Schematic diagram of the shock-absorbing sleeve Figure 1 ;

[0023] Figure 6 Schematic diagram of the shock-absorbing sleeve Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the handle body.

[0025] Figure 8 A diagram showing the separation of the base and the connecting post. Figure 1 ;

[0026] Figure 9 A diagram showing the separation of the base and the connecting post. Figure 2 ;

[0027] Figure 10 This is a cross-sectional view of the shock absorber handle;

[0028] Figure 11 for Figure 10 Enlarged view of a portion at point A;

[0029] Figure 12 for Figure 10 A magnified view of section B.

[0030] In the diagram: 1. Handle housing; 2. Handle body; 3. Elastic locking ring; 4. Support groove; 5. Annular retaining edge; 6. Shock-absorbing sleeve; 7. Anti-slip texture; 8. Receiving groove; 9. Gasket; 10. Screw; 11. First through hole; 12. Third through hole; 13. Head; 14. Mounting groove; 15. Annular insertion part; 16. Notch part; 17. Sleeve side wall; 18. Bottom; 19. Second through hole; 20. Outer ring edge; 21. Seat; 22. Connecting post; 23. Threaded hole; 24. Pressure ring; 25. Insertion groove; 26. Inner convex edge; 27. Ring opening; 28. Bolt; 29. ​​Through hole; 30. First post; 31. Second post; 32. Positioning groove; 33. Mounting hole; 34. Nut; 35. Connecting hole; 36. Inner bottom wall; 37. Inner side wall; 38. Insertion port. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] Figures 1-12 As shown, the shock-absorbing handle of the power tool includes a handle body 2, a handle housing 1, and a screw 10. The handle body 2 has a first connecting part for connecting to the body of the power tool. The handle housing 1 has a mounting groove 14, into which the handle body 2 is inserted. The top of the handle housing 1 has a socket 38 for inserting the handle body 2 into the mounting groove 14. The mounting groove 14 has an inner bottom wall 36 opposite to the socket 38, which serves as abutment when the handle body 2 is inserted. A shock-absorbing sleeve 6 is elastically supported between the handle body 2 and the handle housing 1. The shock-absorbing sleeve 6 is fitted over the outside of the handle body 2 and provides support. The bottom 18 between the bottom end of the handle body 2 and the inner bottom wall 36 of the mounting groove 14, and the sleeve side wall 17 supported between the side wall of the handle body 2 and the inner side wall 37 of the mounting groove 14, the bottom of the handle housing 1 is provided with a first through hole 11 communicating with the inner bottom wall 36, the bottom end of the handle body 2 is provided with a threaded hole 23, and the bottom 18 is provided with a second through hole 19 opposite to the first through hole 11 and the threaded hole 23. The screw 10 passes through the first through hole 11, the second through hole 19 and the threaded hole 23 in sequence and is threadedly connected. The screw 10 and the handle body 2 are connected as a whole. The whole and the handle housing 1 can move relative to each other to compress the shock-absorbing sleeve 6 between them.

[0034] The shock-absorbing handle is connected to the body of the power tool through the first connecting part on the handle body 2. During the use of the power tool, the user holds the handle housing 1. The vibration transmitted from the body of the power tool to the handle housing 1 through the handle body 2 is slowed down and absorbed by the shock-absorbing sleeve 6, thereby achieving the shock absorption effect, reducing hand soreness and fatigue when holding the handle housing 1, improving work efficiency and comfort.

[0035] The handle housing has a cylindrical structure, and the mounting groove 14 extends along the length of the handle housing.

[0036] Figures 7-9As shown, the handle body 2 includes a connecting post 22 for insertion and mating with the mounting groove 14 and a seat 21 connected to the upper end of the connecting post 22. A threaded hole 23 is provided on the end face of the lower end of the connecting post 22. A shock-absorbing sleeve 6 is correspondingly fitted on the outside of the connecting post 22. When the connecting post 22 is inserted into the mounting groove 14, the seat 21 is located above the handle housing 1.

[0037] Figure 1 , Figure 5 , Figure 7 As shown, the top of the handle housing 1 is provided with an annular stop 5 for the hand to rest against when gripping, and the bottom of the seat 21 is provided with a pressure ring 24 extending to one side of the annular stop 5. The pressure ring 24 surrounds the outside of the connecting post 22. The shock-absorbing sleeve 6 is provided with an outer ring edge 20 that is elastically supported between the pressure ring 24 and the annular stop 5. The vibration transmission between the seat 21 and the handle housing 1 is reduced by the outer ring edge 20, and the structure of the pressure ring 24 pressing down makes the connection between the handle body 2 and the handle housing 1 more secure.

[0038] Preferably, the outer ring edge 20 is located at the upper end of the sleeve side wall 17.

[0039] An annular insertion groove 25 is formed between the pressure ring 24 and the connecting post 22. An annular insertion part 15 is protruding on the upper surface of the outer ring edge 20 to engage with the insertion groove 25. By engaging with the insertion groove 25, the contact area between the handle body 2 and the shock-absorbing sleeve 6 is increased, thereby achieving a better shock absorption effect.

[0040] The structure in which the handle body 2 is connected to the power tool body via the first connecting part is a conventional structure in the power tool industry, such as a threaded connection between the handle body and the power tool body via a stud.

[0041] Figures 7-11As shown, or for example, in this patent, the base 21 and the connecting post 22 are two separate and independent components. The first connecting part includes an elastic locking ring 3. The upper end of the base 21 forms a groove 4. The lower end of the elastic locking ring 3 extends into the groove 4 and gradually narrows under the pressure of the inner walls on both sides of the groove 4. The upper end of the elastic locking ring 3 is located outside the groove 4 and forms a ring opening 27 for engaging with the body of the power tool. The lower end of the elastic locking ring 3 extending into the groove 4 is provided with a connecting hole 35. The bottom of the base 21 is provided with a through hole 29 communicating with the inside of the groove 4. The upper end of the connecting post 22 is provided with a mounting hole 33. A nut 34 is installed inside the mounting hole 33. A bolt 28 passes through the connecting hole 35 and the through hole 29 in sequence to connect with the nut 34 inside the mounting hole 33. When connected to the power tool body via the elastic locking ring 3, the elastic locking ring 3 is fitted onto the power tool body. By holding the handle housing 1 and rotating it relative to the base 21, the handle housing 1 drives the internal connecting post 22 to rotate together. As the connecting post 22 rotates relative to the base 21, the bolt 28 moves up and down along the thread on the inner side of the nut 34 to adjust the size of the opening 27, thereby controlling the tightness of the elastic locking ring 3 on the power tool body. The structure for adjusting the elastic locking ring 3 described above can be found in patent CN208246737U.

[0042] The bottom of the base 21 is provided with an annular protrusion inner edge 26, which is located inside the aforementioned pressure ring 24. A positioning groove 32 is formed inside the inner edge 26 for the upper end of the connecting post 22 to be inserted and positioned. The positioning groove 32 facilitates the connection between the connecting post 22 and the base 21 and improves the stability of the relative rotation between the base 21 and the connecting post 22. The inner side of the aforementioned annular insertion part 15 is provided with a notch 16 to avoid the inner protrusion 26.

[0043] The connecting post 22 is composed of two cylinders with different diameters. The diameter of the upper first post 30 is larger than that of the lower second post 31. An annular step is formed between the outer wall of the first post 30 and the outer wall of the second post 31. The nut 34 is at least partially disposed inside the first post 30. By setting the first post 30 to have a larger diameter than the second post 31, the wall thickness of the connecting post 22 is prevented from being too thin due to the internal installation of the nut 34. The strength of the connecting post 22 is improved by thickening the outside.

[0044] The inner cavity shape of the damping sleeve 6 that fits into the connecting column 22 matches the shape of the connecting column 22. Alternatively, there is an interference fit between the damping sleeve 6 and the connecting column 22.

[0045] Figure 2 , Figure 3 , Figure 12As shown, a washer 9 is provided between the screw 10 and the bottom of the handle housing 1. The washer 9 is placed between the head 13 of the screw 10 and the bottom of the handle housing 1. The washer 9 is provided with a third through hole 12 for the screw 10 to pass through. The inner walls of the first through hole 11, the second through hole 19 and the third through hole 12 are provided with gaps between them and the screw 10 to allow the screw 10 to move within them. This allows the entire assembly formed by the handle body 2 and the screw 10 to move relative to the handle housing in the radial direction of the connecting post 22 when the power tool is working.

[0046] Furthermore, the use of shims 9 allows for a tighter connection between the handle housing 1 and the handle body 2.

[0047] Preferably, the first through hole 11, the second through hole 19 and the third through hole 12 are all oblong holes.

[0048] The bottom of the handle housing 1 is provided with a receiving groove 8 for accommodating the head 13 of the screw 10 and the washer 9. The first through hole 11 is provided in the receiving groove 8. The head 13 of the screw 10 and the washer 9 are accommodated in the receiving groove 8 so that the connection part is not exposed, making the appearance more beautiful.

[0049] The shape of the gasket 9 is adapted to the shape of the receiving groove 8, so that the gasket 9 will not shift relative to the handle housing 1 when connected.

[0050] The outer wall of the handle housing 1 is provided with anti-slip texture 7, which provides an anti-slip effect when the hand is holding it.

[0051] The handle housing 1 is made of plastic, the base 21 and the connecting post 22 are also made of plastic, and the shock-absorbing sleeve 6 is made of elastic rubber or silicone.

[0052] The shock-absorbing handle for power tools 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 those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A shock-absorbing handle for a power tool, characterized in that, The tool includes a handle body, a handle housing, and a screw. The handle body has a first connecting part for connecting to the body of a power tool. The handle housing has a mounting groove into which the handle body is inserted. The top of the handle housing has a socket for inserting the handle body into the mounting groove. The mounting groove has an inner bottom wall opposite to the socket, which serves as abutment when the handle body is inserted. A shock-absorbing sleeve is elastically supported between the handle body and the handle housing. The shock-absorbing sleeve is fitted over the outside of the handle body and has a lower bottom supporting the bottom of the handle body and the inner bottom wall of the mounting groove, and a sleeve side wall supporting the side wall of the handle body and the inner side wall of the mounting groove. The bottom of the handle housing has a first through hole communicating with the inner bottom wall. The bottom of the handle body has a threaded hole, and the lower bottom has a second through hole opposite to the first through hole and the threaded hole. The screw passes through the first through hole, the second through hole, and the threaded hole in sequence and is threadedly connected. The screw and the handle body are connected as a whole. The whole and the handle housing can move relative to each other to compress the shock-absorbing sleeve between them.

2. The shock-absorbing handle of the power tool according to claim 1, characterized in that, The handle body includes a connecting post for insertion into the mounting slot and a seat connected to the upper end of the connecting post. The threaded hole is located on the end face of the lower end of the connecting post, and the shock-absorbing sleeve is correspondingly fitted on the outside of the connecting post. When the connecting post is inserted into the mounting slot, the seat is located above the handle housing.

3. The shock-absorbing handle of the power tool according to claim 2, characterized in that, The top of the handle housing is provided with an annular stop for the hand to rest against when gripping, and the bottom of the seat is provided with a pressure ring extending towards one side of the annular stop. The pressure ring surrounds the outside of the connecting column, and the shock-absorbing sleeve is provided with an outer ring edge that is elastically supported between the pressure ring and the annular stop.

4. The shock-absorbing handle of the power tool according to claim 3, characterized in that, An annular insertion groove is formed between the pressure ring and the connecting post, and an annular insertion part that is protruding on the upper surface of the outer ring edge and is inserted into the insertion groove.

5. The shock-absorbing handle of the power tool according to claim 2, characterized in that, The base and the connecting post are two separate and independent components. The first connecting part includes an elastic locking ring. The upper end of the base has a groove. The lower end of the elastic locking ring extends into the groove and gradually narrows due to the pressure from the inner walls on both sides of the groove. The upper end of the elastic locking ring is located outside the groove, forming a ring opening for fitting with the body of the power tool. The lower end of the elastic locking ring extending into the groove has a connecting hole. The bottom of the base has a through hole communicating with the groove. The upper end of the connecting post has a mounting hole. A nut is installed in the mounting hole. The bolt passes through the connecting hole, the through hole, and the nut in the mounting hole in sequence and is threadedly connected. Rotating the connecting post relative to the base causes the bolt to move up and down along the thread on the inner side of the nut to adjust the size of the ring opening.

6. The shock-absorbing handle of the power tool according to claim 5, characterized in that, The connecting column consists of two cylinders with different diameters. The diameter of the upper cylinder is larger than that of the lower cylinder. An annular step is formed between the outer walls of the first cylinder and the outer walls of the second cylinder. The nut is at least partially disposed in the first cylinder.

7. The shock-absorbing handle of the power tool according to claim 1, characterized in that, A washer is provided between the screw and the bottom of the handle housing. The washer is placed between the head of the screw and the bottom of the handle housing. The washer has a third through hole for the screw to pass through. The inner walls of the first through hole, the second through hole and the third through hole are all provided with gaps between them and the screw to allow the screw to move within them.

8. The shock-absorbing handle of the power tool according to claim 7, characterized in that, The first through hole, the second through hole, and the third through hole are oblong holes.

9. The shock-absorbing handle of the power tool according to claim 7, characterized in that, The bottom of the handle housing is provided with a receiving groove for accommodating the head of the screw and the washer, and the first through hole is provided in the receiving groove.

10. The shock-absorbing handle of the power tool according to claim 1, characterized in that, The outer wall of the handle housing is provided with anti-slip texture.

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