An electric hammer

Abstract

The utility model provides a kind of electric hammer, belong to electric tool technical field.It solves the technical problems such as inconvenient grease adding of existing electric hammer.The electric hammer includes casing and the impact assembly installed in casing, and the impact assembly includes swing bearing, and the casing is equipped with the oil filler port opposite to swing bearing, and the oil filler port is detachably connected with sealing cover, and the sealing cover is sealed between casing by sealing ring.The utility model has the advantages of convenient grease adding.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology and relates to an electric hammer. Background Technology

[0002] With the advancement of technology, many power tools have emerged to replace manual operations. Electric hammers are a widely used power tool, mainly used for drilling holes in walls. Electric hammers can output torque while also outputting a striking force.

[0003] When in use, an electric hammer is driven by a motor to rotate a shaft. The rotation of the shaft drives a swing bearing to twist, which in turn drives the hammer to move back and forth via a swing arm to achieve the impact force. Examples include electric hammers disclosed in Chinese patent documents [Application No. 202011021012.4] and [Application No. 202221716017.3]. The swing bearing requires grease for lubrication during high-speed movement. After prolonged use, the grease will liquefy and be consumed, requiring replacement. Currently, electric hammers require the entire housing to be disassembled to add or replace grease, which is difficult for ordinary users and can easily damage the hammer. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an electric hammer. The technical problem solved by this invention is the ability to easily add lubricating grease.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An electric hammer includes a housing and an impact assembly installed within the housing, the impact assembly including a oscillating bearing, characterized in that the housing has an oil filler port facing the oscillating bearing, the oil filler port is detachably connected to a sealing cap, and the sealing cap is sealed to the housing by a sealing ring.

[0007] Lubricating grease can be added to the swing bearing through the oil filler port by opening the sealing cap, without having to completely disassemble the machine housing. This makes adding grease more convenient. The oil filler port also allows for easy observation of the internal impact components of the electric hammer, facilitating the maintenance of the electric hammer.

[0008] Preferably, in the aforementioned electric hammer, the oil filling port is located on the lower side of the housing and directly below the swing bearing.

[0009] In the aforementioned electric hammer, an oil receiving groove is provided on the inner side of the sealing cover, and the oil receiving groove is located directly below the oscillating bearing. The oil receiving groove can collect excess grease dripping from the oscillating bearing and liquefied grease, reducing the free-flowing grease and thus preventing grease leakage.

[0010] In the aforementioned electric hammer, the bottom of the oil receiving groove is provided with raised ribs. The raised ribs increase the contact area with the lubricating grease, thereby allowing the lubricating grease to remain in the oil receiving groove.

[0011] In the aforementioned electric hammer, a limiting ring is provided around the oil filling port on the outer side of the housing, and the sealing cap is embedded inside the limiting ring. The limiting ring can quickly position the sealing cap, facilitating accurate installation of the sealing cap.

[0012] In another case, in the aforementioned electric hammer, the oil filling port is located on the side of the housing.

[0013] In the aforementioned electric hammer, the sealing cover and the housing are fixed together by screws. The screws securely fasten the sealing cover to the housing and allow for easy disassembly.

[0014] In the aforementioned electric hammer, a front mounting bracket is fixed to the front of the housing. The front mounting bracket includes a mounting base and a hammer sleeve. The mounting base is fixed to the housing. The impact assembly also includes a hammer, which is installed inside the hammer sleeve. A connecting hole is provided on the lower side of the hammer sleeve, through which the swing arm of the oscillating bearing passes and connects to the hammer. The front mounting bracket is an aluminum support, which improves the electric hammer's ability to withstand the rear impact force of the hammer, reduces direct impact on the housing, and ensures the stable and sealed fixation of the sealing cover.

[0015] In the aforementioned electric hammer, the upper side of the hammer sleeve is provided with a main reinforcing rib along the circumference, and the outer periphery of the hammer sleeve is provided with several side reinforcing ribs on both sides of the main reinforcing rib. The side reinforcing ribs are inclined from top to bottom and backward, and their upper ends are connected to the main reinforcing ribs. The inclined side reinforcing ribs can further increase the axial strength of the hammer sleeve, and through cooperation with the main reinforcing ribs, the hammer sleeve can withstand and offset the rear impact force of the hammer, thereby improving structural stability.

[0016] Compared with existing technologies, this electric hammer has the advantage of allowing for easy addition of grease without disassembling the casing. Attached Figure Description

[0017] Figure 1 This is a 3D structural diagram of an electric hammer.

[0018] Figure 2 This is a cross-sectional view of the electric hammer.

[0019] Figure 3 This is a 3D structural diagram of the electric hammer removing the sealing cap.

[0020] Figure 4 This is a three-dimensional structural diagram of the sealing cap.

[0021] Figure 5 This is a three-dimensional structural diagram of the front mounting bracket.

[0022] In the diagram, 1. Housing; 11. Filler neck; 12. Limiting ring; 2. Front mounting bracket; 21. Mounting seat; 22. Hammer sleeve; 23. Main reinforcing rib; 24. Side reinforcing rib; 3. Motor; 31. Swing bearing; 32. Swing rod; 33. Hammer; 34. Shaft; 4. Sealing cover; 41. Oil receiving groove; 42. Raised strip; 43. Sealing ring. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, the electric hammer includes a housing 1 and an impact assembly installed inside the housing 1. A front mounting bracket 2 is fixed to the front of the housing 1. The front mounting bracket 2 is made of aluminum, making it lightweight and strong. The front mounting bracket 2 includes a mounting base 21 and a hammer sleeve 22. The mounting base 21 is sealed and fixedly connected to the housing 1. A motor 3 is installed at the rear of the housing 1. The impact assembly includes a swing bearing 31 connected to a rotating shaft 34 and a hammer 33. The hammer 33 is installed inside the hammer sleeve 22. A connecting hole is provided on the lower side of the hammer sleeve 22. The swing rod 32 of the swing bearing 31 passes through the connecting hole and connects to the hammer 33. The motor 3 drives the rotating shaft 34 to rotate, which in turn drives the swing bearing 31 to rotate. The swing rod 32 of the swing bearing 31 drives the hammer 33 to move back and forth within the hammer sleeve 22. The related structures and installation structures of the front mounting bracket 2, the motor 3, and the impact assembly are existing technologies and will not be described in detail in this embodiment.

[0026] The housing 1 is provided with a filler port 11 facing the swing bearing 31. The filler port 11 is located on the lower side of the housing 1 and directly below the swing bearing 31. A limiting ring 12 is provided around the filler port 11 on the outer side of the housing 1. The sealing cover 4 is embedded in the inner side of the limiting ring 12. The sealing cover 4 and the housing 1 are fixed by screws. The inner side of the sealing cover 4 is provided with an oil receiving groove 41. The oil receiving groove 41 is located directly below the swing bearing 31. The bottom of the oil receiving groove 41 is provided with a protrusion 42. In this embodiment, the protrusion 42 is in the shape of a cross. The sealing cover 4 and the housing 1 are sealed by a sealing ring 43.

[0027] The upper side of the hammer sleeve 22 is provided with a main reinforcing rib 23 along the circumferential direction. Several side reinforcing ribs 24 are provided on both sides of the main reinforcing rib 23 on the outer periphery of the hammer sleeve 22. The side reinforcing ribs 24 are inclined from top to bottom and backward, and the upper end of the side reinforcing ribs 24 is connected to the main reinforcing rib 23.

[0028] Lubricating grease can be added to the swing bearing 31 through the oil filling port 11 by opening the sealing cap 4, without having to completely disassemble the housing 1, making the grease adding operation more convenient. The condition of the internal impact components of the electric hammer can also be easily observed through the oil filling port 11, which facilitates the maintenance of the electric hammer.

[0029] Example 2

[0030] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that the filler port is located on the side of the casing.

[0031] Example 3

[0032] The structure and principle of this embodiment are basically the same as those of Embodiment 1, except that the convex strip is in the shape of an "X".

[0033] Example 4

[0034] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that the sealing cover and the housing are fixed by a snap-fit ​​structure.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An electric hammer, comprising a housing (1) and an impact assembly mounted within the housing (1), the impact assembly including a sway bearing (31), characterized in that, The housing (1) is provided with an oil filling port (11) facing the swing bearing (31). A sealing cap (4) is detachably connected to the oil filling port (11). The sealing cap (4) and the housing (1) are sealed by a sealing ring (43).

2. The electric hammer according to claim 1, characterized in that, The oil filler port (11) is located on the lower side of the housing (1) and directly below the swing bearing (31).

3. The electric hammer according to claim 2, characterized in that, The inner side of the sealing cover (4) is provided with an oil receiving groove (41), which is located directly below the swing bearing (31).

4. The electric hammer according to claim 3, characterized in that, The bottom of the oil receiving groove (41) is provided with a protrusion (42).

5. The electric hammer according to claim 1, characterized in that, The filler port (11) is located on the side of the housing (1).

6. The electric hammer according to claim 2, 3, 4, or 5, characterized in that, The outer side of the housing (1) is provided with a limiting ring (12) surrounding the oil filling port (11), and the sealing cap (4) is embedded inside the limiting ring (12).

7. The electric hammer according to claim 2, 3, 4, or 5, characterized in that, The sealing cover (4) and the housing (1) are fixed together by screws.

8. The electric hammer according to claim 2, 3, 4, or 5, characterized in that, The front of the housing (1) is fixed with a front mounting bracket (2). The front mounting bracket (2) includes a mounting base (21) and a hammer sleeve (22). The mounting base (21) is fixed to the housing (1). The impact assembly also includes a hammer (33). The hammer (33) is installed in the hammer sleeve (22). The lower side of the hammer sleeve (22) is provided with a connecting hole. The swing rod (32) of the swing bearing (31) passes through the connecting hole and is connected to the hammer (33).

9. The electric hammer according to claim 8, characterized in that, The upper side of the hammer sleeve (22) is provided with a main reinforcing rib (23) along the circumferential direction. The outer periphery of the hammer sleeve (22) is provided with several side reinforcing ribs (24) on both sides of the main reinforcing rib (23). The side reinforcing ribs (24) are inclined from top to bottom and backward. The upper end of the side reinforcing ribs (24) is connected to the main reinforcing rib (23).

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