Electric hammer convenient to grab
By designing an adjustable movable handle and fixed handle in the electric hammer, combining the friction between the screw and the limit cam, the problem of inflexibility of the traditional electric hammer handle is solved, improving operational stability and safety, and enhancing the comfort of use .
Patent Information
- Application Number
- CN202421105465.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The operating handle design of traditional electric hammers lacks flexibility and cannot be adjusted according to personalized operating habits, resulting in hand fatigue and unstable operation during high-intensity or long-term use, which may affect safety.
An electric hammer is designed including a movable handle, a fixed handle, a screw, an elastic element, a wedge block and a limit cam. By adjusting the angle and friction of the handle, the handle is stable and the handle is prevented from loosening.
It improves the operating stability and safety of the electric hammer, reduces hand fatigue, and enhances the comfort and accuracy of operation.
Smart Images
Figure CN222328086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric hammers, in particular to an electric hammer which is easy to grasp and operate. Background Art
[0002] As a member of the electric drill family, the electric hammer is widely used in drilling operations in concrete, floor slabs, brick walls and stone materials with its excellent performance. Its professional performance makes it easy to drill holes in walls, concrete and stone materials. In addition, the multi-functional electric hammer can replace ordinary electric drills and electric picks with its adjustable characteristics when equipped with appropriate drill bits, showing its excellent versatility.
[0003] However, the design of the operating handle of traditional electric hammers is often inflexible and cannot be adjusted according to the personalized operating habits and needs of the workers, which greatly limits the efficiency and comfort of the use of electric hammers. Especially in high-intensity or long-term work, the fixed operating handle can easily cause hand fatigue of the workers and may even affect the accuracy and safety of the operation.
[0004] In order to solve this problem, the prior art has already introduced an electric hammer design that can flexibly adjust the operating handle. This design allows the worker to use a screw locking mechanism to fix the handle after adjusting the handle position, thereby improving the flexibility and operating comfort of the electric hammer. However, although this design solves the flexibility problem of the operating handle to a certain extent, during long-term use, due to the continuous vibration during work, the connection between the operating handle and the electric hammer body may still become loose, and may even cause the locking mechanism to fail in a vibrating environment. This not only seriously affects the stability of the worker's grasping operation of the electric hammer, but may also pose a potential threat to the safety of the workers. Utility Model Content
[0005] In view of the above-mentioned prior art, the utility model aims to provide an electric hammer that is easy to grasp and operate, thereby improving the stability of the operation and facilitating the grasping operation for the staff.
[0006] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:
[0007] An electric hammer that is easy to grasp and operate, comprises an electric hammer body, a movable handle and a fixed handle, the movable handle is rotatably connected to the middle part of the electric hammer body, the fixed handle is fixedly connected to the rear end of the electric hammer body, the movable handle comprises a connecting head, a screw rod, an elastic element, a wedge block and a front grip, the connecting head is rotatably connected to the electric hammer body, the first section of the screw rod is threadedly connected to the connecting head, and the end is fixedly connected to the front grip, a limiting cam with a spiral profile is provided on the outer side surface of the middle part of the screw rod, the wedge block is slidably connected to the connecting head, and the sliding direction is perpendicular to the radial direction of the screw rod, and the elastic element pushes the wedge block to abut against the limiting cam.
[0008] Furthermore, the end of the head end of the screw rod is rotatably connected to a friction block.
[0009] Furthermore, the connecting head includes a ring and a cylindrical barrel, the electric hammer body is provided with an annular groove rotatably connected to the ring, the ring is fixedly connected to the cylindrical barrel, the ring is provided with a through hole passing through the screw, and the cylindrical barrel is provided with a threaded hole matching the screw.
[0010] Furthermore, the cylindrical tube is provided with a accommodating cavity for the limiting cam.
[0011] Furthermore, the cylindrical tube is provided with a slide groove, the wedge block is slidably connected to the slide groove, the elastic element is provided on one side of the slide groove, and when the elastic element pushes the wedge block to move to the other side, the wedge block abuts against the limiting cam.
[0012] Furthermore, a groove is provided at the bottom of the cylindrical tube, and the front handle is rotatably connected to the groove.
[0013] Furthermore, the elastic element is a coil spring.
[0014] Furthermore, the wedge block is connected to the shift rod.
[0015] Furthermore, the surface of the lever is provided with anti-skid protrusions or grooves.
[0016] The beneficial effect of the utility model is that the staff can adjust the angle between the movable handle and the fixed handle according to their own operating habits. When the screw is reversed, the limit cam gradually turns the end with a larger diameter to the wedge block, and the friction between the limit cam and the wedge block also causes the end with a larger thickness of the wedge block to move toward the limit cam. Under the action of the wedge block and the limit cam, the movable handle is hindered from reversing, and the vibration during work causes the front handle to reverse and loosen, which is convenient for the staff to grasp the electric pick. At the same time, when the vibration causes the screw to reverse, the limit cam gradually turns the end with a smaller diameter to the wedge block, and the friction between the limit cam and the wedge block also causes the end with a smaller thickness of the wedge block to move toward the limit cam. The action of the wedge block and the limit cam cannot hinder the forward rotation of the movable handle, so the vibration during work will make the fixation of the movable handle more stable. The utility model greatly improves the operating stability of the electric hammer and facilitates the grasping operation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of an electric hammer that is convenient for grabbing operation in an embodiment of the present application;
[0018] Figure 2 It is a schematic diagram of a partial cross-sectional structure of an electric hammer that is convenient for grabbing operation in an embodiment of the present application;
[0019] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a movable handle in an embodiment of the present application;
[0020] Description of Figure Numbers:
[0021] 1. Electric hammer body; 2. Movable handle; 3. Fixed handle; 4. Connector; 5. Screw; 6. Elastic element; 7. Wedge block; 8. Front handle; 9. Limit cam; 10. Friction block; 11. Ring; 12. Cylinder; 13. Annular groove; 14. Through hole; 15. Threaded hole; 16. Accommodating cavity; 17. Slide groove; 18. Recess; 19. Push rod. DETAILED DESCRIPTION
[0022] The technical solution of the utility model is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.
[0023] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0024] Example 1
[0025] Please refer to the attached Figures 1 to 3The present application provides an electric hammer that is easy to grasp and operate, including an electric hammer body 1, a movable handle 2 and a fixed handle 3. The movable handle 2 is rotatably connected to the middle part of the electric hammer body 1, and the fixed handle 3 is fixedly connected to the rear end of the electric hammer body 1. The movable handle 2 includes a connector 4, a screw 5, an elastic element 6, a wedge block 7 and a front grip 8. The connector 4 is rotatably connected to the electric hammer body 1, the first section of the screw 5 is threadedly connected to the connector 4, and the end is fixedly connected to the front grip 8. The outer side surface of the middle part of the screw 5 is provided with a limit cam 9 with a spiral profile, the wedge block 7 is slidably connected to the connector 4, and the sliding direction is perpendicular to the radial direction of the screw 5, and the elastic element 6 pushes the wedge block 7 to abut against the limit cam 9. When operating the electric hammer, the left hand grasps the front grip 8 of the movable handle 2, and the right hand grasps the fixed handle 3. The staff can adjust the angle between the movable handle 2 and the fixed handle 3 according to their own operating habits. When adjusting, push the wedge block away from the limit cam 9, so that the wedge block 7 is separated from the limit cam 9, and then turn the front handle 8 to drive the screw 5 to reverse, so that the screw 5 rotates in the direction away from the electric hammer body 1, and the screw 5 is separated from the electric hammer body 1. At this time, the movable handle 2 can adjust the angle position at will. After adjusting to a suitable angle, turn the front handle 8 forward to move the screw 5, so that the screw 5 moves in the direction close to the electric hammer body 1, and the screw 5 clamps the electric hammer body 1. After loosening the wedge block 7, the wedge block 7 abuts against the limit cam 9 under the action of the elastic element 6. When the screw 5 is reversed, the limit cam 9 gradually turns the end with a larger diameter toward the wedge block 7. The friction between the limit cam 9 and the wedge block 7 also causes the end with a larger thickness of the wedge block 7 to move toward the limit cam 9. Under the action of the wedge block 7 and the limit cam 9, the movable handle 2 is prevented from reversing, and the front handle 8 is prevented from reversing and loosening due to vibration during work, which is convenient for the staff to grasp the electric pick. At the same time, when the vibration causes the screw 5 to reverse, the limit cam 9 gradually turns the end with a smaller diameter toward the wedge block 7. The friction between the limit cam 9 and the wedge block 7 also causes the end with a smaller thickness of the wedge block 7 to move toward the limit cam 9. The action of the wedge block 7 and the limit cam 9 cannot hinder the forward rotation of the movable handle 2. Therefore, the vibration during work will make the fixation of the movable handle 2 more stable. The utility model greatly improves the operational stability of the electric hammer and facilitates the grasping operation of the staff.
[0026] Specifically, the end of the first end of the screw rod 5 is rotatably connected with a friction block 10, so as to increase the friction between the first section of the screw rod 5 and the electric hammer body 1 and improve the stability.
[0027] Specifically, the connector 4 includes a collar 11 and a cylindrical barrel 12, the electric hammer body 1 is provided with an annular groove 13 rotatably connected to the collar 11, the collar 11 is fixedly connected to the cylindrical barrel 12, the collar 11 is provided with a through hole 14 passing through the screw 5, and the cylindrical barrel 12 is provided with a threaded hole 15 matching the screw 5. The electric hammer body 1 is rotatably connected to the collar 11, and the annular groove 13 can prevent the collar 11 from moving in the axial direction. When the screw 5 rotates, it moves along the threaded hole 15, passes through the through hole 14, and abuts against the electric hammer body 1, thereby firmly fixing the movable handle 2.
[0028] Specifically, the cylindrical tube 12 is provided with a receiving cavity 16 for the position limiting cam 9, so as to facilitate the rotation of the position limiting cam 9.
[0029] Specifically, the cylindrical tube 12 is provided with a slide groove 17, the wedge block 7 is slidably connected to the slide groove 17, the elastic element 6 is provided on one side of the slide groove 17, and when the elastic element 6 pushes the wedge block 7 to move to the other side, the wedge block 7 abuts against the limit cam 9. The wedge block 7 can slide along the slide groove 17, and can push the wedge block 7 outside the cylindrical tube 12, so that the wedge block 7 is separated from the limit cam 9.
[0030] Example 2
[0031] Please refer to the attached Figures 1 to 3 The difference between this embodiment and embodiment 1 is that a groove 18 is provided at the bottom of the cylindrical tube 12, and the front handle 8 is rotatably connected to the groove 18. The upper end of the front handle 8 extends into the groove 18, which is convenient for workers to grab the electric hammer.
[0032] Specifically, the elastic element 6 is a coil spring, which can stably push the wedge block 7 to move.
[0033] Specifically, the wedge block 7 is connected to the shifting rod, so that the worker can push the wedge block 7 away from the limiting cam 9, and the operation is more convenient.
[0034] Specifically, the surface of the lever is provided with an anti-skid protrusion or groove 18, which facilitates pushing the lever.
[0035] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. The protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An electric hammer that is easy to grasp and operate, characterized in that: The electric hammer comprises an electric hammer body (1), a movable handle (2) and a fixed handle (3); the movable handle (2) is rotatably connected to the middle part of the electric hammer body (1); the fixed handle (3) is fixedly connected to the rear end of the electric hammer body (1); the movable handle (2) comprises a connecting head (4), a screw rod (5), an elastic element (6), a wedge block (7) and a front handle (8); the connecting head (4) is rotatably connected to the electric hammer body (1); the first section of the screw rod (5) is threadedly connected to the connecting head (4); the end section is fixedly connected to the front handle (8); a limiting cam (9) with a spiral profile is provided on the outer side surface of the middle part of the screw rod (5); the wedge block (7) is slidably connected to the connecting head (4), and the sliding direction is perpendicular to the radial direction of the screw rod (5); the elastic element (6) pushes the wedge block (7) to abut against the limiting cam (9).
2. The electric hammer for easy grasping operation according to claim 1, characterized in that: The end of the head end of the screw rod (5) is rotatably connected to a friction block (10).
3. The electric hammer for easy grasping operation according to claim 1, characterized in that: The connecting head (4) comprises a sleeve (11) and a cylindrical barrel (12); the electric hammer body (1) is provided with an annular groove (13) rotatably connected to the sleeve (11); the sleeve (11) is fixedly connected to the cylindrical barrel (12); the sleeve (11) is provided with a through hole (14) passing through the screw rod (5); and the cylindrical barrel (12) is provided with a threaded hole (15) cooperating with the screw rod (5).
4. The electric hammer for easy grasping operation according to claim 3, characterized in that: The cylindrical barrel (12) is provided with a housing cavity (16) for the limiting cam (9).
5. The electric hammer for easy grasping operation according to claim 3, characterized in that: The cylindrical tube (12) is provided with a slide groove (17), the wedge block (7) is slidably connected to the slide groove (17), the elastic element (6) is arranged on one side of the slide groove (17), and when the elastic element (6) pushes the wedge block (7) to move to the other side, the wedge block (7) abuts against the limit cam (9).
6. The electric hammer for easy grasping operation according to claim 3, characterized in that: The bottom of the cylindrical tube (12) is provided with a groove (18), and the front handle (8) is rotatably connected to the groove (18).
7. The electric hammer for easy grasping operation according to claim 1, characterized in that: The elastic element (6) is a coil spring.
8. The electric hammer for easy grasping operation according to claim 1, characterized in that: The wedge block (7) is connected to the shifting rod.
9. The electric hammer for easy grasping operation according to claim 8, characterized in that: The surface of the lever is provided with an anti-skid protrusion or groove (18).