Electric tool capable of being provided with various working heads

Abstract

The utility model provides an electric tool capable of being provided with various working heads, which comprises a motor body, a battery pack connected with the motor body, a clamping component positioned at the output end of the motor body and a working head component capable of being arranged on the clamping component, the working head assembly is characterized in that the working end of the working head assembly can be sleeved with an elastic piece playing a buffering role. An elastic piece with a buffering function can be installed on the working head assembly, and a certain protection function can be achieved.

Description

Technical Field

[0001] The utility model relates to an electric tool capable of installing multiple working heads. Background Art

[0002] Among the existing hand-held electric tools, there are usually electric drills, electric hammers, impact drills, etc. The existing hand-held tools usually have a single function. For example, an electric drill only has the functions of drilling holes and locking and removing screws, while the existing electric hammer can only drive nails. Both can only have their respective individual functions, that is, the function of an electric drill or the function of a nail hammer. At the same time, there is no protection measure when the existing nail hammer drives nails, and sometimes it will hurt the hand. Moreover, the installation of an electric tool with two functions is not guaranteed.

[0003] The motor body structure in the following text is the prior art, which includes a connecting piece, a rotating piece, a rammer and a striking block. After the connecting piece is inserted into the rotating piece, it can rotate with the rotating piece to realize the function of drilling. When the connecting piece pushes the rammer to the second position, the striking block hits the rammer to realize the function of hammering. Summary of the Utility Model

[0004] The purpose of the utility model is to address the above problems in the existing technology and propose an electric tool capable of installing multiple working heads, which can install an elastic member with a buffering function on the working head assembly and can also play a certain protective role.

[0005] The purpose of the utility model can be achieved by the following technical solutions: an electric tool capable of installing multiple working heads, including a motor body, a battery pack connected to the motor body, a clamping assembly located at the output end of the motor body, and a working head assembly that can be installed on the clamping assembly, characterized in that:

[0006] An elastic member with a buffering function can be sleeved on the working end of the working head assembly.

[0007] Furthermore, the working head assembly includes a screwdriver bit and a nail hammer working head that can be separately installed on the clamping assembly.

[0008] Furthermore, the nail hammer working head includes a nail driving shaft and a nail driving shaft sleeve sleeved on the working end of the nail driving shaft. The other end of the nail driving shaft sleeve has an installation groove, and a compression spring is installed in the installation groove. A flat washer that presses against the compression spring is installed at the outer end of the installation groove, and a shaft retaining snap ring is covered outside the flat washer and fixed on the nail driving shaft.

[0009] Furthermore, the nail driving shaft has an annular clamping groove for the shaft retaining snap ring to be clamped and fixed, and the nail driving shaft sleeve and the end of the nail driving shaft have a stepped abutting connection structure.

[0010] Further, the elastic member is a rubber sleeve, and the rubber sleeve is sleeved on the end of the nail driving shaft sleeve and extends beyond the working end of the nail driving shaft.

[0011] Further, a first mounting hole is formed in the working end of the nail driving shaft, and a cylindrical magnet is mounted in the first mounting hole, and the outermost end of the cylindrical magnet is flush with the end face of the nail driving shaft.

[0012] Further, the clamping assembly includes a power shaft and a shaft sleeve. The inner end of the power shaft has a toothed structure, and a power gear is mounted at the outer end thereof. The inner end of the shaft sleeve has connecting teeth that are in meshing power connection with the power gear, and a second mounting hole for mounting the working head assembly is formed in the middle of the shaft sleeve.

[0013] Compared with the prior art, the advantages of the present application are as follows: An elastic member that can play a buffering role can be mounted on the working head assembly, and it can also play a certain protective role. Description of the Drawings

[0014] Figure 1 is a schematic diagram of a power tool;

[0015] Figure 2 is a schematic diagram of a screwdriver bit;

[0016] Figure 3 is an exploded schematic diagram of a nail hammer working head;

[0017] Figure 4 is a sectional schematic diagram of a nail hammer working head;

[0018] Figure 5 is a schematic diagram of the clamping assembly;

[0019] Figure 6 is a schematic diagram of the clamping assembly from another perspective;

[0020] In the figure, 1. motor body; 2. battery pack; 3. clamping assembly; 31. power shaft; 311. power gear; 312. toothed structure; 32. shaft sleeve; 321. second mounting hole; 322. connecting teeth; 41. screwdriver bit; 42. nail hammer working head; 421. nail driving shaft; 4211. first mounting hole; 4212. annular clamping groove; 422. rubber sleeve; 423. cylindrical magnet; 424. compression spring; 425. nail driving shaft sleeve; 4251. mounting groove; 4252. stepped abutting connection structure; 426. flat washer; 427. shaft circlip for shaft. Detailed Embodiments

[0021] The following are specific embodiments of the present invention and in conjunction with the drawings, the technical solutions of the present invention will be further described.

[0022] Such as Figures 1-6As shown in the figure, an electric tool that can install multiple working heads includes a motor body 1, a battery pack 2 connected to the motor body 1, a clamping assembly 3 at the output end of the motor body 1, and a working head assembly that can be installed on the clamping assembly 3. It is characterized in that: the motor body 1 is powered and driven by the battery pack 2.

[0023] An elastic member for buffering can be sleeved on the working end of the working head assembly.

[0024] Furthermore, the working head assembly includes a screwdriver bit 41 and a nail hammer working head 42 that can be separately installed on the clamping assembly 3.

[0025] Furthermore, the nail hammer working head 42 includes a nail driving shaft 421 and a nail driving shaft sleeve 425 sleeved on the working end of the nail driving shaft 421. The other end of the nail driving shaft sleeve 425 has an installation groove 4251, and a compression spring 424 is installed in the installation groove 4251. A flat washer 426 that abuts against the compression spring 424 is installed at the outer end of the installation groove 4251. An external circlip for shaft 427 is covered outside the flat washer 426, and the external circlip for shaft 427 is fixed on the nail driving shaft 421.

[0026] Furthermore, the nail driving shaft 421 has an annular clamping groove 4212 for the external circlip for shaft 427 to be clamped and fixed. The nail driving shaft sleeve 425 and the end of the nail driving shaft 421 have a stepped abutting connection structure 4252. When the nail driving shaft 421 is stressed, it feeds in the direction of the stress to perform the work of the hammer, and at the same time, the compression spring 424 is compressed by the forward feeding action of the external circlip for shaft 427 clamped and fixed on the nail driving shaft 421. The nail driving shaft 421 returns to its original position and continues to be stressed by the rebound of the compression spring 424. The operating distance of the nail driving shaft 421 is approximately the deformation distance of the compression spring 424 in the installation groove 4251 of the nail driving shaft sleeve 425.

[0027] Furthermore, the elastic member is a rubber sleeve 422, and the rubber sleeve 422 is sleeved on the end of the nail driving shaft sleeve 425 and extends beyond the working end of the nail driving shaft 421.

[0028] In this embodiment, it is further explained that when using the nail hammer working head 42, the compression spring 424 is compressed in the nail driving shaft sleeve 425 by hitting the nail driving shaft 421, so that the nail driving shaft 421 acts on small iron nails. The compression spring 424 rebounds, so that the working end in the motor body 1 can hit the nail driving shaft 421 to continuously perform the work of the hammer. In this embodiment, the nail driving shaft 421 is externally provided with a nail driving shaft sleeve 425 and a rubber sleeve 422. Even if the finger controls the nail driving position beside it during nail driving, the nail driving shaft 421 will not hit the hand, playing a very good protective role.

[0029] Further, a first mounting hole 4211 is formed at the working end of the nail driving shaft 421. A cylindrical magnet 423 is mounted in the first mounting hole 4211, and the outermost end of the cylindrical magnet 423 is flush with the end face of the nail driving shaft 421.

[0030] In this embodiment, it is further illustrated that the nail hammer working head 42 is mostly applied to small iron nails. By using the cylindrical magnet 423 to hold the small iron nails, it is more convenient to drive nails.

[0031] Further, the clamping assembly 3 includes a power shaft 31 and a shaft sleeve 32. The inner end of the power shaft 31 has a toothed structure 312, and a power gear 311 is mounted at its outer end. The inner end of the shaft sleeve 32 has a connecting tooth 322 that is meshed and power-connected with the power gear 311. The middle of the shaft sleeve 32 has a second mounting hole 321 for mounting the working head assembly. The screwdriver bit 41 and the nail hammer working head 42 are both mounted in the second mounting hole 321.

[0032] Principle: When using the screwdriver bit 41 in this embodiment, the screwdriver bit 41 is inserted into the shaft sleeve 32. The motor body 1 selects the electric drill gear. The rotation of the power shaft 31 drives the shaft sleeve 32 to drive the screwdriver bit 41 to work. When it is necessary to use the nail hammer, the screwdriver bit 41 is removed, and the nail driving shaft 421 of the nail hammer working head 42 in this embodiment is inserted into the shaft sleeve 32. The motor body 1 is selected to the electric hammer gear. The nail driving movement is carried out by continuously hitting the nail driving shaft 421 by the ram and the striking block in cooperation with the compression spring 424, the flat washer 426, and the nail driving shaft sleeve 425.

[0033] This embodiment can also install working heads with different functions of rotation and hammering according to actual usage requirements, not limited to the above two.

[0034] The above technical solutions of the present invention provide a solution significantly different from the prior art for the technical problem that the prior art solution is too single. The parts not involved in the technical solution of the present application are the same as the prior art or can be implemented by the prior art, and will not be elaborated.

[0035] The technical solutions in the above embodiments have clearly and completely described the content of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims

1. An electric tool capable of installing multiple working heads, comprising a motor body, a battery pack connected to the motor body, a clamping assembly located at the output end of the motor body, and a working head assembly installed on the clamping assembly, characterized in that: The working end of the working head assembly can be sleeved with an elastic member for buffering.

2. The electric tool capable of mounting a plurality of working heads according to claim 1, characterized in that: The working head assembly includes a screwdriver bit and a nail hammer working head that can be individually installed on the clamping assembly.

3. The electric tool capable of installing a plurality of working heads according to claim 2, characterized in that: The nail hammer working head includes a nail driving shaft and a nail driving shaft sleeve sleeved on the working end of the nail driving shaft. The other end of the nail driving shaft sleeve has an installation groove, and a compression spring is installed in the installation groove. A flat washer for pressing against the compression spring is installed at the outer end of the installation groove. An external circlip for shaft is covered outside the flat washer and the external circlip for shaft is fixed on the nail driving shaft.

4. An electric tool capable of installing multiple working heads according to claim 3, characterized in that: The nail driving shaft has an annular clamping groove for the external circlip for shaft to be clamped and fixed, and the nail driving shaft sleeve and the end of the nail driving shaft have a stepped abutting connection structure.

5. The electric tool capable of installing multiple working heads according to claim 4, characterized in that: The elastic member is a rubber sleeve, and the rubber sleeve is sleeved on the end of the nail driving shaft sleeve and extends beyond the working end of the nail driving shaft.

6. The electric tool capable of mounting multiple working heads according to claim 5, wherein A first installation hole is formed in the working end of the nail driving shaft, and a cylindrical magnet is installed in the first installation hole, and the outermost end of the cylindrical magnet is flush with the end face of the nail driving shaft.

7. The electric tool capable of installing multiple working heads according to claim 2, characterized in that, The clamping assembly includes a power shaft and a shaft sleeve. The inner end of the power shaft is a toothed structure, and a power gear is installed at its outer end. The inner end of the shaft sleeve has connecting teeth meshed and power-connected with the power gear. A second installation hole for installing the working head assembly is formed in the middle of the shaft sleeve.

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