Impact part structure of electric tool

Abstract

The utility model discloses an impact part structure of an electric tool. Comprising an outer shell, a containing cavity is formed in the outer shell, and through holes communicated with the containing cavity are formed in the two ends of the outer shell; the first clutch piece is assembled in the accommodating cavity and comprises first impact teeth; the inner end of the first shaft is arranged in the containing cavity, the first shaft comprises a movable groove with an opening in the outer end, and the outer end of the first shaft extends out of the outer shell through the corresponding through hole; the inner end of the second shaft is arranged in the containing cavity, penetrates through the first clutch piece and then is assembled at the movable groove, and the outer end of the second shaft extends out of the outer shell through the corresponding through hole and is used for assembling a drill bit; the second shaft is sleeved with the second clutch piece, and the second clutch piece comprises second impact teeth matched with the first impact teeth. The electric tool drill is used for being installed at the output end of an electric tool, has the impact effect while the drill bit rotates, improves the application range and the working efficiency, has multiple purposes, and is simple in overall structure, convenient to carry, disassemble and assemble and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an impact piece structure of an electric tool. Background Art

[0002] With the continuous advancement and development of power tool technology, the functional requirements for power tools are also constantly increasing. For drilling, electric drills are suitable for areas with lower hardness, while electric hammers are more suitable for areas with higher hardness, such as concrete walls. However, two power tools take up a lot of space. Therefore, how to achieve multi-functionality with one tool is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides an electric tool impact piece structure, which can be installed on the head of an electric drill and can realize the impact function after installation, thus achieving the effect of an electric hammer.

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] An electric tool impact piece structure, comprising

[0006] An outer shell, wherein the outer shell includes an accommodating cavity and has through holes at both ends thereof communicating with the accommodating cavity;

[0007] A first clutch member, which is assembled in the accommodating cavity and includes a first impact tooth;

[0008] A first shaft, the inner end of which is arranged in the accommodating cavity and includes a movable groove with an outer end opening, the outer end of the first shaft extending outside the outer shell through a corresponding through hole, and is used to be connected to the output end of the power tool;

[0009] a second shaft, the inner end of which is arranged in the accommodating cavity and is assembled in the movable groove after passing through the first clutch member, and the outer end of the second shaft extends to the outside of the outer shell through the corresponding through hole for assembling a drill bit; and

[0010] The second clutch member is mounted on the second shaft and includes a second impact tooth matched with the first impact tooth, so that the second shaft impacts back and forth while rotating through the cooperation between the first impact tooth and the second impact tooth.

[0011] In the above technical solution, preferably, the shape of the portion where the inner end of the second shaft cooperates with the movable groove is adapted to the shape of the movable groove, and the shape of the movable groove is non-circular.

[0012] In the above technical solution, preferably, the shapes of the movable groove and the portion where the inner end of the second shaft cooperates with the movable groove are both hexagonal.

[0013] In the above technical solution, preferably, an elastic unit is arranged between the inner end of the second shaft and the inner wall of the movable groove.

[0014] In the above technical solution, preferably, the first clutch member is fixedly disposed in the outer shell.

[0015] In the above technical solution, preferably, the second clutch member is fixedly arranged on the second shaft.

[0016] In the above technical solution, preferably, a plurality of bearings are provided on the portion of the first shaft located in the accommodating cavity and / or the portion of the second shaft located in the accommodating cavity.

[0017] In the above technical solution, preferably, the outer shell includes a plurality of mounting holes for mounting the gripping handle.

[0018] In the above technical solution, preferably, the outer end of the second shaft includes a press-type chuck.

[0019] In the above technical solution, preferably, the outer end of the second shaft includes a mounting groove for mounting a drill bit.

[0020] The beneficial effects of the utility model are:

[0021] The utility model is used to be installed at the output end of the electric tool, and has an impact effect when the drill bit rotates, thereby improving the scope of application and working efficiency. The machine has multiple uses, has a simple overall structure, is easy to carry and disassemble, and occupies little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the outer shell of the utility model.

[0024] Figure 3 It is a cross-sectional schematic diagram of the main components of the utility model.

[0025] Figure 4 This is a schematic diagram of the cooperation state of the first clutch member and the second clutch member of the present invention.

[0026] Figure 5 This is a schematic diagram of the first clutch component of the present invention.

[0027] Figure 6 This is a schematic diagram of the second clutch component of the present invention.

[0028] Figure 7 This is a schematic diagram of the separation state of the first shaft and the second shaft of the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] See also Figure 1-Figure 7 , an electric tool impact member structure, including an outer shell 1, a first clutch member 2, a second clutch member 3, a first shaft 4 and a second shaft 5.

[0031] The outer shell 1 is composed of an upper shell and a lower shell. After the upper shell and the lower shell are assembled, an accommodating cavity is formed inside. At the same time, there are through holes 11 connected to the accommodating cavity at both ends of the outer shell, one of which is used for the passage of the first shaft 4, and the other through hole is used for the penetration of the second shaft 5.

[0032] To facilitate the assembly of related components, a number of mounting grooves are provided on the inner walls of the upper and lower shells, which are used to accommodate the relevant parts of the first shaft 4 and the second shaft 5 as well as the bearing 6, the first clutch member 2 and other components.

[0033] For the first shaft 4, its inner end is arranged in the accommodating cavity, and its outer end extends outside the outer shell 1. The outer end is used to be connected to the output end of the power tool so that the power tool can control the first shaft 4 to rotate after starting.

[0034] In this embodiment, the inner end of the first shaft 4 includes a movable groove 41 . The movable groove 41 is opened from the inner end wall of the first shaft 4 toward the inner side thereof to form a movable groove with an outer end open.

[0035] For the second shaft 5, its inner end is arranged in the accommodating cavity, the inner end portion is adapted to the movable groove 41 and inserted in the movable groove 41, and the outer end of the second shaft 5 extends outside the outer shell 1 for assembling the drill bit.

[0036] In this embodiment, the shape of the portion where the inner end of the second shaft 5 cooperates with the movable groove 41 is adapted to the shape of the movable groove 41. In order to enable the second shaft 5 to rotate with the rotation of the first shaft 4, the shape of the movable groove 41 and the shape of the portion where the inner end of the second shaft 5 cooperates with the movable groove 41 are set to be non-circular, such as both shapes are set to be hexagonal.

[0037] In this embodiment, an elastic unit (not shown in the figure) is provided in the movable groove 41. As one implementation method, one end of the elastic unit abuts against the inner wall of the movable groove 41, and the other end abuts against the inner end wall of the second shaft 5, so that after the second shaft 5 is pressed toward the inside of the outer shell 1, the elastic unit can shrink, and after the second shaft 5 loses force, the elastic unit can push the second shaft 5 to move outward, thereby realizing the reciprocating movement of the second shaft 5. The elastic unit can specifically be a spring.

[0038] The first clutch member 2 is assembled in the accommodating cavity and includes a first impact tooth 21 with a through hole 22 in the center thereof so that the second shaft 5 passes through the through hole 22. As one embodiment, the first clutch member 2 is fixedly disposed in the outer shell.

[0039] As one embodiment, the first clutch member 2 includes an inner cavity 23, the first impact tooth 21 is arranged on the inner wall of the inner cavity 23, and at least part of the second clutch member 3 is arranged in the inner cavity 23, so that the two fit more closely.

[0040] The second clutch member 3 is arranged in the accommodating cavity and is mounted on the second shaft 5. It includes a second impact tooth 31 that matches the first impact tooth 21. The surface where the second impact tooth 31 is provided faces the surface where the first impact tooth 21 is provided. Figure 3 、 Figure 4 shown.

[0041] As one implementation manner, the second clutch member 3 is fixedly disposed on the second shaft 5 .

[0042] In this embodiment, a plurality of bearings 6 are provided at the portion of the first shaft 4 located in the accommodating cavity and the portion of the second shaft 5 located in the accommodating cavity to enhance the stability of the rotation of the first shaft 4 and the second shaft 5 .

[0043] During operation, the drill bit abuts against the working part. After the power tool is started, the drill bit is driven to rotate by the first shaft 4 and the second shaft 5. Relying on the abutment action of the drill bit, the second shaft 5 can move into the outer shell 1, thereby achieving an impact rotation effect through the rebound of the elastic unit and the cooperation of the first clutch 2 and the second clutch 3.

[0044] As a further option, the outer shell 1 includes several mounting holes 12 for installing a gripping handle. If the gripping handle includes a screw, the mounting hole 12 is a threaded hole that cooperates with the screw thread or a nut 13 that cooperates with the screw thread is fixed in the mounting hole, so that the gripping handle can be reliably fixed to the outer shell 1 and serve as a gripping part of the user's hand during operation, making the drilling operation more stable and safe.

[0045] As for the matching method of the drill bit and the second shaft 5, as one embodiment, the outer end of the second shaft 5 includes a mounting groove 51 for installing the drill bit, and the drill bit is assembled on the outer end of the second shaft 5 by insertion. At the same time, the outer end of the second shaft 5 is a press-type chuck (not shown in the figure). For the press-type chuck, reference can be made to the existing design, such as including two steel balls arranged at the outer end of the second shaft, a chuck slidably connected to the outer end of the second shaft, and a spring arranged between the chuck and the flange on the second shaft. The two steel balls are released by pressing the chuck down, and then the drill bit is inserted. After the chuck is released, the chuck is reset by the action of the spring. After resetting, the steel balls are pressed down to clamp the drill bit.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electric tool impact member structure, characterized in that: include An outer shell, wherein the outer shell includes an accommodating cavity and has through holes at both ends thereof communicating with the accommodating cavity; A first clutch member, which is assembled in the accommodating cavity and includes a first impact tooth; A first shaft, the inner end of which is arranged in the accommodating cavity and includes a movable groove with an outer end opening, the outer end of the first shaft extending outside the outer shell through a corresponding through hole, and is used to be connected to the output end of the power tool; A second shaft, the inner end of which is arranged in the accommodating cavity and is assembled in the movable groove after passing through the first clutch member, and the outer end of the second shaft extends to the outside of the outer shell through the corresponding through hole for assembling a drill bit; as well as The second clutch member is mounted on the second shaft and includes a second impact tooth matched with the first impact tooth, so that the second shaft impacts back and forth while rotating through the cooperation between the first impact tooth and the second impact tooth.

2. The electric tool impact member structure according to claim 1, characterized in that: The shape of the portion where the inner end of the second shaft cooperates with the movable groove is adapted to the shape of the movable groove, and the shape of the movable groove is non-circular.

3. The electric tool impact member structure according to claim 2, characterized in that: The movable groove and the portion where the inner end of the second shaft matches the movable groove are both hexagonal in shape.

4. An electric tool impact member structure according to any one of claims 1 to 3, characterized in that: An elastic unit is arranged between the inner end of the second shaft and the inner wall of the movable groove.

5. The electric tool impact member structure according to claim 1, characterized in that: The first clutch component is fixedly disposed in the outer shell.

6. The electric tool impact member structure according to claim 1 or 5, characterized in that: The second clutch member is fixedly disposed on the second shaft.

7. The electric tool impact member structure according to claim 1, characterized in that: A plurality of bearings are provided on a portion of the first shaft located in the accommodating cavity and / or a portion of the second shaft located in the accommodating cavity.

8. The electric tool impact member structure according to claim 1, characterized in that: The outer shell includes a plurality of mounting holes for mounting the gripping handle.

9. The electric tool impact member structure according to claim 1, characterized in that: The outer end of the second shaft includes a press-type chuck.

10. The electric tool impact member structure according to claim 1 or 9, characterized in that: The outer end of the second shaft includes a mounting groove for mounting a drill bit.

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