Brushless lithium electric hammer

Abstract

The utility model discloses a brushless lithium electric hammer which comprises a machine shell formed by clamping a left shell body and a right shell body, and the left shell body and the right shell body are both integrally formed through injection molding. The whole machine shell is in a U shape and is divided into a main machine shell, a handle and a damping connecting part at the bottom of the main machine shell and the bottom of the handle, and a buffering notch is formed between the upper portion of the main machine shell and the upper portion of the handle. A drill bit is arranged at the front end of the main machine shell, and a driving assembly for driving the drill bit to act is installed in the main machine shell. Shock absorption is achieved between the main machine shell and the handle through the shock absorption connecting part, impact force on the handle is reduced, and shock displacement of the main machine shell and the handle is buffered through the buffering notch; the structural design is simple and ingenious, and the vibration influence of vibration on operators can be effectively reduced; and through integral injection molding, the stability is better, and the cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of electric hammer technology, and more specifically, to a brushless lithium electric hammer. Background Technology

[0002] An electric hammer drill is a common tool. Its basic structure consists of a motor that drives the drill bit to rotate via a gear set, and a clutch, rocker arm, and bearing that drives a cylinder and piston. This causes the rotating drill bit to generate impact motion. An electric hammer drill is an electrically powered rotary hammer drill with a safety clutch and a pneumatic hammering mechanism. It utilizes the principle of piston motion, compressing gas to impact the drill bit, allowing it to drill holes in hard materials such as concrete, brick, and stone.

[0003] Brushless lithium-ion hammer drills typically refer to hammer drills that use brushless motor technology and lithium batteries as their power source. These drills combine the advantages of brushless motors and lithium batteries, providing more efficient and longer-lasting power output. However, using brushless lithium-ion hammer drills and other vibratory tools exposes the operator to high levels of vibration for extended periods. This results in rebound forces and significant vibrations acting on the operator, which can easily lead to fatigue and potentially cause a range of negative health effects.

[0004] To address these issues, we propose a brushless lithium-ion hammer. Utility Model Content

[0005] The purpose of this invention is to provide a brushless lithium-ion hammer that overcomes the aforementioned defects in the prior art.

[0006] The technical solution to achieve the purpose of this utility model is: a brushless lithium hammer, including a housing formed by the snap-fit ​​of a left housing and a right housing, both of which are integrally molded by injection molding; the housing is U-shaped in general and is divided into a main housing, a handle, and a shock-absorbing connection part at the bottom of the main housing and the handle, with a buffer notch between the upper part of the main housing and the upper part of the handle; a drill bit is provided at the front end of the main housing, and a drive assembly for driving the drill bit is installed inside the main housing.

[0007] In a preferred embodiment, a notch-covering sleeve is also provided between the main unit housing and the handle.

[0008] In a preferred embodiment, the notch shielding sleeve is injection molded twice between the main housing and the notch shielding sleeve.

[0009] In a preferred embodiment, the notch shielding sleeve is made of an elastic material.

[0010] In a preferred embodiment, a connecting post is also included, with its two ends connected to the main housing and the handle, respectively, and the notch cover sleeve is fitted onto the connecting post.

[0011] In a preferred embodiment, one end of the connecting post is fixedly connected to the main housing, and the other end is provided with a boss; the handle is provided with a cavity to accommodate the boss, and the two ends of the cavity are provided with a first limiting part and a second limiting part that cooperate with the boss, and the boss is movably installed between the first limiting part and the second limiting part.

[0012] In a preferred embodiment, the connecting post is made of an elastic telescopic material, and both ends of the connecting post are fixedly connected to the main housing and the handle, respectively.

[0013] In a preferred embodiment, the connecting post is a spring or rubber.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects:

[0015] (1) This utility model reduces the impact force on the handle by using the shock-absorbing connection part at the bottom between the main body shell and the handle, and buffers the vibration displacement of the main body shell and the handle by using the buffer notch; the structural design is simple and ingenious, which can effectively reduce the vibration impact on the operator; and the injection molding process makes it more stable and lower in cost.

[0016] (2) This utility model can effectively improve the overall appearance by covering the notch with a notch cover.

[0017] (3) The secondary injection molding of this utility model reduces assembly steps and improves installation efficiency.

[0018] (4) By setting a connecting post, this utility model improves the stability of the connection between the main body shell and the handle, increases the service life, and avoids the safety hazard of breakage caused by long-term use.

[0019] (5) The boss of the connecting column of this utility model can extend and retract in the cavity of the handle, which improves the stability of the connection without affecting the shock absorption effect of the notch.

[0020] (6) The connecting column of this utility model improves the stability of the connection by using elastic material, making the installation more convenient, and the elastic material has a certain shock absorption effect. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0022] Figure 1 This is a perspective view of Embodiment 1 of the present utility model.

[0023] Figure 2 This is a perspective view of Embodiment 2 of the present invention.

[0024] Figure 3 This is a perspective view of Embodiment 3 of the present invention.

[0025] Figure 4 This is an internal structural diagram of Embodiment 3 of the present invention.

[0026] Figure 5 This is an internal view of Embodiment 4 of the present invention.

[0027] The reference numerals in the attached drawings are as follows: 1. Main casing; 2. Handle; 21. Cavity; 22. First limiting part; 23. Second limiting part; 3. Notch shielding sleeve; 4. Connecting column; 41. Boss; 5. Shock-absorbing connecting part; 6. Buffer notch. Detailed Implementation

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0034] (Example 1)

[0035] See Figure 1 A brushless lithium-ion hammer includes a housing formed by the snap-fitting of a left housing and a right housing, both of which are integrally molded by injection molding; the housing is U-shaped and consists of a main housing 1, a handle 2, and a shock-absorbing connection 5 at the bottom of the main housing 1 and the handle 2; a buffer notch 6 is provided between the upper part of the main housing 1 and the upper part of the handle 2; a drill bit is provided at the front end of the main housing 1, and a drive assembly for driving the drill bit is installed inside the main housing 1.

[0036] The shock absorption of the lower shock-absorbing connection between the main body shell and the handle reduces the impact on the handle, and the vibration displacement of the main body shell and the handle is buffered by the buffer notch; the structural design is simple and ingenious, which can effectively reduce the vibration impact on the operator; and the injection molding process makes it more stable and lower in cost.

[0037] (Example 2)

[0038] See Figure 2Based on Embodiment 1, a notch-covering sleeve 3 is also provided between the main housing 1 and the handle 2. The notch-covering sleeve 3 can be made of rubber material, which has good elasticity. It can be assembled between the main housing 1 and the handle 2, or it can be injection molded between the main housing 1 and the handle 2 to improve the overall integrity. The notch-covering sleeve 3 is only used to cover and buffer the notch and does not play a shock-absorbing role, but can effectively improve the overall appearance.

[0039] (Example 3)

[0040] See Figure 3 and Figure 4 Based on implementation 2, a connecting post 4 is further provided between the main casing 1 and the handle 2. One end of the connecting post 4 is fixedly connected to the main casing 1, and the other end has a protrusion 41. The handle 2 has a cavity 21 to accommodate the protrusion 41. The two ends of the cavity 21 have a first limiting part 22 and a second limiting part 23 that cooperate with the protrusion 41. The connecting post 4 passes through the second limiting part 23, and the protrusion 41 is movably installed between the first limiting part 22 and the second limiting part 23. When the connecting post 4 is affected by vibration, the protrusion 41 will move in the cavity 21, but it is restricted by the first limiting part 22 and the second limiting part 23, so that the main casing 1 and the handle 2 will not break. This improves the stability of the connection between the main casing and the handle, increases the service life, and avoids the safety hazard of breakage due to long-term use.

[0041] (Example 4)

[0042] See Figure 5 Based on implementation 2, the two ends of the connecting post 4 are fixedly connected to the main housing 1 and the handle 2 respectively. As shown in the figure, the two ends of the connecting post 4 are provided with snap-fit ​​parts, and the main housing 1 and the handle 2 are respectively provided with snap-fit ​​grooves. The connecting post 4 is snapped between the main housing 1 and the handle 2, and the notch shielding sleeve 3 is fitted on the outside of the connecting post 4. Furthermore, the connecting post 4 is made of elastic telescopic material, such as springs or rubber. This structure makes the overall assembly more convenient, improves the stability of the connection, and the elastic material has a certain shock absorption effect. This solution reduces the rebound force generated by the brushless lithium hammer, protects the safety of the operator, and also makes the hammer body structure more stable and extends its service life.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A brushless lithium-ion electric hammer, characterized in that: The machine includes a housing formed by the snap-fitting of a left housing and a right housing, both of which are integrally molded by injection molding; the machine housing is U-shaped in shape and is divided into a main housing (1), a handle (2), and a shock-absorbing connection part (5) at the bottom of the main housing (1) and the handle (2); a buffer notch (6) is provided between the upper part of the main housing (1) and the upper part of the handle (2); a drill bit is provided at the front end of the main housing (1), and a drive assembly for driving the drill bit is installed inside the main housing (1).

2. The brushless lithium-ion hammer according to claim 1, characterized in that: A notch cover (3) is also provided between the main body housing (1) and the handle (2).

3. The brushless lithium-ion hammer according to claim 2, characterized in that: The notch shielding sleeve (3) is injection molded twice between the main body shell (1) and the handle (2).

4. The brushless lithium-ion electric hammer according to claim 2, characterized in that: The notch cover (3) is made of elastic material.

5. A brushless lithium-ion electric hammer according to claim 2, characterized in that: It also includes a connecting post (4), the two ends of which are connected to the main body shell (1) and the handle (2) respectively, and the notch cover (3) is fitted on the connecting post (4).

6. A brushless lithium-ion electric hammer according to claim 5, characterized in that: One end of the connecting post (4) is fixedly connected to the main housing (1), and the other end is provided with a boss (41); the handle (2) is provided with a cavity (21) to accommodate the boss (41), and the two ends of the cavity (21) are provided with a first limiting part (22) and a second limiting part (23) that cooperate with the boss (41), and the boss (41) is movably installed between the first limiting part (22) and the second limiting part (23).

7. A brushless lithium-ion electric hammer according to claim 5, characterized in that: The connecting post (4) is made of elastic telescopic material, and the two ends of the connecting post (4) are fixedly connected to the main body shell (1) and the handle (2) respectively.

8. A brushless lithium-ion electric hammer according to claim 7, characterized in that: The connecting post (4) is a spring or rubber.

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