Percussion drill with hammering protection mechanism

Abstract

The utility model discloses a percussion drill with a hammering protection mechanism. The percussion drill with the hammering protection mechanism comprises a shell. The control shaft penetrates through the shell to be provided with a rotatable control shaft; the control part is matched with the shell and is convexly arranged on the control shaft; and the clamping blocks are arranged in the control part in a sliding mode, limiting grooves are formed corresponding to the clamping blocks, the control shaft is rotated until the clamping blocks enter the limiting grooves, and the control shaft is limited in the shell. The movable clamping block is arranged on the control part, meanwhile, the control part is matched with the control shaft in the shell so that the control part can be locked in the shell, the first inclined face of the clamping block and the control sleeve of the hammering piece are matched so that the installed hammering piece can be normally used, and the reloading efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to impact drill technical field especially has the percussion protection mechanism's impact drill. BACKGROUND

[0002] With the growth of the construction industry and the demand of home decoration, impact drill as a kind of commonly used electric tool, it has been widely used in the drilling operation on various materials such as concrete, masonry and other hard materials. The working principle of impact drill is to realize the drilling of materials through rotary motion combined with axial impact force. Patent document announcement number "CN204700847U" discloses a portable electric tool to realize the replacement of various different hammering parts by inserting hammering parts, but because the rotating shaft is movable, it needs to be fixed during installation, and then it can be quickly installed. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides impact drill with hammer protection mechanism in the prior art, and the technical problems are solved.

[0004] To solve the above technical problem, the utility model solves through the following technical scheme: impact drill with hammer protection mechanism includes shell, control shaft, control shaft is rotatable and is arranged through shell, control part is matched with shell and is arranged protruding on control shaft, and a plurality of clamping blocks are arranged slidingly in the control part, limit groove is arranged corresponding to the clamping block, control shaft is rotated to the clamping block enters the limit groove, and control shaft is limited in shell.

[0005] In the above scheme, preferably, the top of the clamping block includes a sliding block, the bottom of the limit groove is provided with a stop block, and a spring is arranged between the sliding block and the stop block.

[0006] In the above scheme, preferably, the shell includes a through hole for the control shaft to pass through, and an air gap is arranged between the control part and the through hole.

[0007] In the above scheme, preferably, the control shaft includes a connecting part, and the connecting part is located outside the shell.

[0008] In the above scheme, preferably, it further includes a hammering part matched with the connecting part, and the hammering part includes a connecting sleeve matched with the connecting part.

[0009] In the above scheme, preferably, the hammering part further includes a control sleeve located on one side of the connecting sleeve, the control sleeve includes a plurality of groove bodies corresponding to the clamping blocks, and the groove bodies are used for placing the clamping blocks.

[0010] In the above scheme, preferably, the clamping block includes a first inclined surface, when the control sleeve moves towards the first inclined surface, the control sleeve moves the clamping block to the inside of the shell to leave the limit groove against the spring.

[0011] Preferably, the connecting part is provided with threads, and the connecting sleeve is matched and connected on the connecting part.

[0012] The utility model discloses the beneficial effect is: control part is provided with movable clamping block, and cooperation shell control shaft, realize control part can be locked in the shell, cooperation clamping block's first inclined plane and hammering spare control cover, realize the hammering spare of installation completion can be normal use, improve the efficiency of refitting. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model.

[0014] Figure 2 It is the internal schematic diagram of the utility model.

[0015] Figure 3 It is Figure 2 A-A direction schematic diagram.

[0016] Figure 4 It is the installation schematic diagram of the hammering spare of the utility model.

[0017] Figure 5 It is the schematic diagram of control cover and clamping block of the utility model.

[0018] Figure 6 It is Figure 5 B enlarged view.

[0019] Figure 7 It is the schematic diagram of setting up groove and elastic layer on control cover of the utility model.

[0020] Figure 8 It is Figure 7 C enlarged view. DETAILED DESCRIPTION

[0021] Embodiment 1: the utility model is further described in detail in combination with the drawings and specific implementation manners: refer to Figures 1-6 , the impact drill with hammering protection mechanism, including shell 1, the shell 1 generally includes transmission in it, and the transmission is used to control the rotation and the thumping of hammering spare 16.

[0022] The transmission includes control shaft 2, the control shaft 2 can complete the rotation and the thumping action, after separating installation of hammering spare 16 and control shaft 2, can adapt to various different hammering spare 16.

[0023] Specifically, the control shaft 2 includes connecting part 9, the connecting part 9 is provided with threads, the hammering spare 16 includes the connecting sleeve 11 of adaptive connecting part 9, and the connecting sleeve 11 can be installed into the connecting part 9 by rotating.

[0024] In the installation process, to prevent the control shaft 2 from rotating and make it difficult to install the hammering part 16, the shell 1 comprises a through hole 8, the control shaft 2 is arranged through the through hole 8, a control part 3 is arranged on the control shaft 2 corresponding to the through hole 8, and a gap is left between the control part 3 and the through hole 8.

[0025] A plurality of clamping blocks 4 are arranged in the control part 3, the clamping block 4 comprises a slider 6 at the top, the slider 6 is longer than the clamping block 4, a sliding groove for the slider 6 is arranged in the control part 3, a stopper 7 is arranged at the bottom of the sliding groove, the stopper 7 is used to limit the movement of the slider 6, and at the same time, the clamping block 4 can move between the stoppers 7.

[0026] At the same time, a spring is arranged between the stopper 7 and the clamping block 4, when the spring is in a static state, the slider 6 is in the middle of the limit, that is, the slider 6 is not in contact with the top of the sliding groove and the bottom of the stopper 7, at the same time, a limiting groove 5 is arranged at the through hole 8 of the shell 1, the limiting groove 5 matches the arrangement of the clamping block 4, that is, the clamping block 4 can enter the limiting groove 5 to realize the relative fixation of the control shaft 2 and the shell 1, and facilitate the installation of the hammering part 16.

[0027] At the same time, when the hammering part 16 is installed, the control shaft 2 needs to be disengaged from the limiting relationship with the shell 1, therefore, a control sleeve 10 is arranged on one side of the connecting sleeve 11, the control sleeve 10 can be inserted into the gap between the control part 3 and the through hole 8, and at the same time, it is convenient for the movement of the clamping block 4.

[0028] A first inclined surface 13 is arranged on the clamping block 4, the first inclined surface 13 is arranged towards the outside of the shell 1, that is, when the control sleeve 10 is inserted, the control sleeve 10 is in contact with the first inclined surface 13 and makes the clamping block 4 move against the spring.

[0029] That is, the control sleeve 10 unlocks the clamping block 4 and the control shaft 2, and the normal work of the hammering part 16 can be realized, it should be noted that, in the static state of the spring, the first inclined surface 13 is at the edge of the outermost side of the limiting groove 5, and it is convenient for the control sleeve 10 to be inserted.

[0030] Embodiment 2: on the basis of embodiment 1, further referring to Figures 7-8 , in order to further prevent the hammering part 16 from falling off on the connecting part 9 during hammering, a protection device is arranged between the hammering part 16 and the control sleeve 10 to prevent the hammering part 16 from falling off.

[0031] Specifically, the control sleeve 10 is provided with a matching groove 12 of the clamping block 4, the groove 12 is larger than the clamping block 4, when the control sleeve 10 rotates with the connecting sleeve 11 and enters, the clamping block 4 will match with the groove 12, that is, the clamping block 4 will enter the groove 12.

[0032] The elastic layer 15 is arranged at the bottom of the groove 12, when the elastic layer 15 and the spring are in a static state, the first inclined surface 13 is at the top of the groove 12.

[0033] Meanwhile, the hammering part 16 rotates synchronously with the control shaft 2 in the process of use after installation, therefore, under the action of centrifugal force, the clamping block 4 will move away from the control part 3 to overcome the elastic layer 15 and the spring, under high-speed rotation, the first inclined surface 13 is completely in the groove 12, that is, the control sleeve 10 is limited by the clamping block 4 and stops rotating, the clamping block 4 resets.

[0034] Further, the second inclined surface 14 is arranged on the clamping block 4 opposite to the first inclined surface 13, when the rotation stops, the control sleeve 10 rotates, the second inclined surface 14 matches with the groove 12, the clamping block 4 moves to the inside of the control part 3, the control sleeve 10 can be separated from the control shaft 2.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An impact drill with a hammer protection mechanism, characterized in that: include Housing (1); A control shaft (2) is provided to be rotatable and passes through the housing (1); a control portion (3), the control portion (3) matching the housing (1) and having a protrusion provided on the control shaft (2); and A plurality of card blocks (4) are slidably arranged in the control portion (3), and limiting grooves (5) are provided corresponding to the card blocks (4). The control shaft (2) is rotated until the card blocks (4) enter the limiting grooves (5), and the control shaft (2) is limited in the housing (1).

2. The impact drill with a hammer protection mechanism according to claim 1, characterized in that: The top of the clamping block (4) includes a slider (6), the bottom of the limiting groove (5) is provided with a stopper (7), and a spring is provided between the slider (6) and the stopper (7).

3. The impact drill with a hammer protection mechanism according to claim 1 or 2, characterized in that: The housing (1) comprises a through hole (8) for the control shaft (2) to pass through, and a gap is provided between the control portion (3) and the through hole (8).

4. The impact drill with a hammer protection mechanism according to claim 3, characterized in that: The control shaft (2) comprises a connecting portion (9), and the connecting portion (9) is located outside the housing (1).

5. The impact drill with a hammer protection mechanism according to claim 4, characterized in that: The invention also comprises a hammering piece (16) matched with the connecting portion (9), wherein the hammering piece (16) comprises a connecting sleeve (11) matched with the connecting portion (9).

6. The impact drill with a hammer protection mechanism according to claim 5, characterized in that: The hammer member (16) further comprises a control sleeve (10) located on one side of the connecting sleeve (11), wherein the control sleeve (10) comprises a plurality of slots (12) corresponding to the clamping blocks (4), and the slots (12) are used to place the clamping blocks (4).

7. The impact drill with a hammer protection mechanism according to claim 6, characterized in that: The clamping block (4) includes a first inclined surface (13). When the control sleeve (10) moves toward the first inclined surface (13), the control sleeve (10) moves the clamping block (4) toward the inside of the housing (1) to leave the limiting groove (5) against the spring.

8. The impact drill with a hammer protection mechanism according to claim 5, characterized in that: The connecting portion (9) is provided with a thread, and the connecting sleeve (11) is matched and connected thereto.

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