Damping device with better damping effect in hammer drill shell

Abstract

The utility model discloses a damping device with a better damping effect in a hammer drill shell. The damping device comprises a front shell and a rear shell, the front shell and the rear shell can be connected in a relative axial sliding mode, a movable gap is formed between the front shell and the rear shell, a damping device is arranged at the movable gap between the front shell and the rear shell and comprises a front positioning plate, a damping gasket and a rear positioning plate, and the front positioning plate and the rear positioning plate are installed on the two sides of the damping gasket respectively. And the two sides of the damping washer are respectively positioned and propped against the front shell and the rear shell through the front positioning plate and the rear positioning plate. According to the utility model, the damping device is arranged between the front shell and the rear shell, and the damping device is arranged at the movable gap between the front shell and the rear shell to buffer the vibration between the front shell and the rear shell, so that the vibration acting on the grip during the use and operation of the drill rod can be effectively reduced, the use comfort of an operator is improved, and the adverse effect caused by operation and use is improved; and better positioning, supporting and buffering effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of hammer drill technology, and specifically to a shock-absorbing device for better shock absorption in the housing of a hammer drill. Background Technology

[0002] Hammer drills are commonly used impact tools. The various mechanisms within a hammer drill are housed in a casing. They are operated by gripping the handle at the back of the casing, applying force through the handle to align the drill rod against the work area. Currently, the handle and casing of hammer drills are fixedly connected and cannot move relative to each other. Therefore, the vibration from the drill rod's rotation reacts on the handle, causing discomfort and potentially impacting the operator's health with prolonged use. While some hammer drills have incorporated cushioning structures to address this issue, their installation is inconvenient and the cushioning effect is inadequate. Therefore, improvements are necessary to address these problems. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned in the background art and to provide a shock-absorbing device with better shock absorption effect in the housing of a hammer drill.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a vibration damping device for better vibration damping effect in the housing of a hammer drill, comprising a front housing and a rear housing; the front housing and the rear housing are axially slidably connected, and there is a movable gap between the front housing and the rear housing. A vibration damping device is provided at the movable gap between the front housing and the rear housing. The vibration damping device includes a front positioning plate, a vibration damping washer, and a rear positioning plate. The front positioning plate and the rear positioning plate are respectively installed on both sides of the vibration damping washer. The two sides of the vibration damping washer are positioned and abutted against the front housing and the rear housing through the front positioning plate and the rear positioning plate, respectively. The front housing and the rear housing move relative to each other through the movable gap, and squeeze the vibration damping washer between them, thereby damping and buffering the working vibration between the front housing and the rear housing through the vibration damping washer.

[0005] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, a plurality of shock-absorbing springs are provided between the front positioning plate and the rear positioning plate.

[0006] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, the front positioning plate and the shock-absorbing washer are integrally formed, and the front positioning plate is positioned and connected to the front housing.

[0007] In the aforementioned shock-absorbing device for improving the shock absorption effect in a hammer drill housing, the shock-absorbing washer elastically clamps and positions the rear positioning plate, and the rear positioning plate is positioned and connected to the rear housing.

[0008] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, the front positioning plate and the rear positioning plate are respectively provided with a positioning boss and a spring groove for positioning the end of the shock-absorbing spring.

[0009] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, a snap hook is provided on the front housing, and the snap hook is snapped and positioned with the inner side of the front positioning plate.

[0010] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, multiple corresponding positioning protrusions and positioning grooves are respectively provided on the rear positioning plate and the rear housing.

[0011] In the above-mentioned shock-absorbing device for better shock absorption in hammer drill housing, the front housing is provided with a housing connection part, the rear housing is provided with a connection cavity, the front housing is provided with multiple rotating locking grooves, and the rear housing is provided with multiple locking protrusions corresponding to the rotating locking grooves. After the locking protrusions pass through the end of the rotating locking grooves, they rotate and under the elastic force of the shock-absorbing device, the locking protrusions abut against the rotating locking grooves.

[0012] In the aforementioned shock-absorbing device for better shock absorption in a hammer drill housing, the front housing and the rear housing are respectively provided with corresponding axial positioning grooves. Axial positioning components are installed on both through the axial positioning grooves. The axial positioning groove on the front housing extends into its interior, and the axial positioning component passes through the interior of the front housing and is positioned in the axial positioning grooves on the front housing and the rear housing.

[0013] The beneficial effects of this utility model are:

[0014] This invention features a shock-absorbing device installed between the front and rear housings. This device buffers the vibration between the two housings at the movable gap, effectively reducing the vibration acting on the handle during drill rod use and operation, improving operator comfort, and mitigating adverse effects of operation. Compared with existing technologies, the shock-absorbing device in this invention provides better positioning support and buffering.

[0015] Meanwhile, multiple damping springs are installed in the damping device to further enhance the damping effect of the device on the vibration between the front and rear housings, and further improve the operator's comfort. Attached Figure Description

[0016] Figure 1 , Figure 2 These are exploded views of this utility model from two different perspectives;

[0017] Figure 3 This is a perspective view of the present invention;

[0018] Figure 4This is a perspective view of the shock absorption device in this utility model;

[0019] Figure 5 , Figure 6 These are perspective views of the shock absorption device in this utility model from two different directions. Detailed Implementation

[0020] The present invention will be further described in conjunction with the accompanying drawings.

[0021] Please see Figures 1 to 6 This utility model provides a shock-absorbing device with better vibration reduction effect for hammer drill housing, including a front housing 1 and a rear housing 2; the front housing 1 and the rear housing 2 are axially slidably connected, and there is a movable gap 3 between the front housing 1 and the rear housing 2. A shock-absorbing device 4 is provided at the movable gap 3 between the front housing 1 and the rear housing 2. The shock-absorbing device 4 includes a front positioning plate 5, a shock-absorbing washer 6, and a rear positioning plate 7. The front positioning plate 5 and the rear positioning plate 7 are respectively installed on both sides of the shock-absorbing washer 6. Preferably, the front positioning plate 5 and the shock-absorbing washer 6 are integrally formed. When the shock-absorbing washer 6 is injection molded, the front positioning plate is placed in the mold and injection molded to form an integral part. The front positioning plate 5 is positioned and connected to the front housing 1. The shock-absorbing washer 6 elastically clamps and positions the rear positioning plate 7. The rear positioning plate 7 is positioned and connected to the rear housing 2. The two sides of the shock-absorbing washer 6 are respectively positioned and abutted against the front housing 1 and the rear housing 2 through the front positioning plate 5 and the rear positioning plate 7.

[0022] In order to better improve the shock absorption effect of the shock absorption device between the front and rear housings, multiple shock absorption springs 8 are provided between the front positioning plate 5 and the rear positioning plate 7. The front housing 1 and the rear housing 2 move relative to each other through the movable gap 3, and squeeze the shock absorption washer 6 between them, thereby damping and buffering the working vibration between the front housing 1 and the rear housing 2 through the shock absorption washer 6.

[0023] Furthermore, the front housing 1 is provided with a housing connecting part 14, and the rear housing 2 is provided with a connecting cavity 15. The front housing 1 is provided with multiple rotating locking grooves 16, and the rear housing 2 is provided with multiple locking protrusions 17 corresponding to the rotating locking grooves (16). After the locking protrusions 17 pass through the end of the rotating locking groove 16, they rotate and, under the elastic force of the shock-absorbing device 4, the locking protrusions 17 abut against the rotating locking groove 16. The front housing 1 and the rear housing 2 are respectively provided with corresponding axial positioning grooves 18. Axial positioning components 19 are installed on both through the axial positioning grooves 18. The axial positioning grooves 18 on the front housing 1 extend into its interior, and the axial positioning components 19 pass through the interior of the front housing 1 and are positioned in the axial positioning grooves 18 on the front housing 1 and the rear housing 2. The axial positioning components 19 not only provide axial positioning for the movement between the front housing 1 and the rear housing 2, but also effectively prevent the locking protrusions 17 from failing to abut against the rotating locking grooves 16 due to rotation of the front housing 1 and the rear housing 2.

[0024] During use, the vibration force generated when the drill rod rotates acts on the front housing 1. The vibration force causes the rear housing 2 to move relative to the front housing 1 through the movable gap 3, and squeezes the shock-absorbing device 4 at the movable gap 3. The generated vibration force is effectively buffered by the shock-absorbing device 4, improving the operator's comfort and mitigating the adverse effects of operation.

[0025] Furthermore, in order to improve the stability of the shock-absorbing spring 8 installation, the front positioning plate 5 and the rear positioning plate 7 are respectively provided with positioning bosses 9 and spring grooves 10 for positioning the ends of the shock-absorbing spring 8.

[0026] Furthermore, in order to further improve the stability of the connection, the front housing 1 is provided with a snap hook 11, which snaps and positions itself with the inner side of the front positioning plate 5.

[0027] Furthermore, in order to improve the stability of the installation of the shock absorption device 4, multiple corresponding positioning protrusions 12 and positioning grooves 13 are respectively provided on the rear positioning plate 7 and the rear housing 2.

[0028] The above provides a detailed description of a shock-absorbing device with better shock absorption effect in the housing of a hammer drill, as provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solution disclosed in this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A vibration damping device for improved vibration reduction in the housing of a hammer drill, comprising a front housing (1) and a rear housing (2); characterized in that: The front housing (1) and the rear housing (2) are axially slidably connected. There is a movable gap (3) between the front housing (1) and the rear housing (2). A shock-absorbing device (4) is provided at the movable gap (3) between the front housing (1) and the rear housing (2). The shock-absorbing device (4) includes a front positioning plate (5), a shock-absorbing washer (6), and a rear positioning plate (7). The front positioning plate (5) and the rear positioning plate (7) are respectively installed on both sides of the shock-absorbing washer (6). The two sides of the shock-absorbing washer (6) are respectively positioned and abutted against the front housing (1) and the rear housing (2) through the front positioning plate (5) and the rear positioning plate (7). The front housing (1) and the rear housing (2) move relative to each other through the movable gap (3) and squeeze the shock-absorbing washer (6) between them, thereby damping the working vibration between the front housing (1) and the rear housing (2) through the shock-absorbing washer (6).

2. A vibration damping device with better vibration damping effect in the housing of a hammer drill according to claim 1, characterized in that: Multiple shock-absorbing springs (8) are provided between the front positioning plate (5) and the rear positioning plate (7).

3. A vibration damping device with better vibration damping effect in a hammer drill housing according to claim 1 or 2, characterized in that: The front positioning plate (5) and the shock-absorbing washer (6) are an integral structure, and the front positioning plate (5) is positioned and connected to the front housing (1).

4. A vibration damping device with better vibration damping effect in a hammer drill housing according to claim 1 or 2, characterized in that: The shock-absorbing washer (6) provides elastic clamping and positioning for the rear positioning plate (7), and the rear positioning plate (7) is positioned and connected to the rear housing (2).

5. A vibration damping device with better vibration damping effect in the housing of a hammer drill according to claim 2, characterized in that: The front positioning plate (5) and the rear positioning plate (7) are respectively provided with positioning bosses (9) and spring grooves (10) for positioning the end of the shock-absorbing spring (8).

6. A vibration damping device with better vibration damping effect in a hammer drill housing according to claim 3, characterized in that: The front housing (1) is provided with a buckle hook (11), which is snapped and positioned with the inner side of the front positioning plate (5).

7. A vibration damping device with better vibration damping effect in the housing of a hammer drill according to claim 4, characterized in that: The rear positioning plate (7) and the rear housing (2) are respectively provided with a plurality of corresponding positioning protrusions (12) and positioning grooves (13).

8. A vibration damping device with better vibration damping effect in a hammer drill housing according to claim 1, characterized in that: The front housing (1) is provided with a housing connection part (14), and the rear housing (2) is provided with a connection cavity (15). The front housing (1) is provided with multiple rotating slots (16), and the rear housing (2) is provided with multiple buckling protrusions (17) corresponding to the rotating slots (16). After the buckling protrusions (17) pass through the end of the rotating slots (16), they rotate and under the elastic force of the shock absorption device (4), the buckling protrusions (17) abut against the rotating slots (16).

9. A vibration damping device with better vibration damping effect in a hammer drill housing according to claim 8, characterized in that: The front housing (1) and the rear housing (2) are respectively provided with corresponding axial positioning grooves (18). Axial positioning components (19) are installed on both through the axial positioning grooves (18). The axial positioning grooves (18) on the front housing (1) extend into its interior. The axial positioning components (19) pass through the axial positioning grooves (18) on the front housing (1) and the rear housing (2) from the interior of the front housing (1).

Images