CN112770873A

CN112770873A - Impact machine tool

Info

Publication number: CN112770873A
Application number: CN201880097768.1A
Authority: CN
Inventors: 谢炬烽
Original assignee: Bosch Power Tools China Co Ltd
Current assignee: Bosch Power Tools China Co Ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2021-05-07
Anticipated expiration: 2038-09-20
Also published as: CN112770873B; DE112018007992T5; WO2020056654A1

Abstract

An impact mechanism (104) comprising: the wall of the hammering pipe (10) is provided with at least one vent hole (11); a clutch member (20) configured to rotate together with the hammer pipe (10); a drive gear (30) configured to rotationally drive the hammer tube (10); a sliding sleeve (40) configured to slide along the hammer tube (10); wherein the sliding sleeve (40), the clutch member (20) and the drive gear (30) are configured to be arranged around the outside of the hammering pipe (10); and the sliding sleeve (40) is further configured to be movable between a first position and a second position, such that in the first position the sliding sleeve (40) causes the at least one vent hole (11) of the hammer tube (10) to communicate with the surrounding atmosphere, and in the second position the sliding sleeve (40) closes the at least one vent hole (11) of the hammer tube (10). An impact machine tool (100) is also provided. The impact mechanism (104) and the impact machine tool (100) are compact, avoid idle impacts and facilitate greater impact energy.

Description

Impact machine tool

Technical Field

The present invention relates to a percussion mechanism and to a percussion power tool, in particular a hand-held percussion power tool, such as a hammer drill and/or a hammer drill, comprising such a percussion mechanism.

Background

Impact power tools, such as hammer drills and/or hammer drills, are widely used for drilling or chiseling in stone, concrete or the like. During operation, a ram within the hammer tube transfers energy in the form of an impact to a plug-in tool (e.g., a drill bit) via a striker, while the hammer tube rotates the plug-in tool under the drive of a drive mechanism. By means of the switching mechanism, the impact power tool can also be moved individually or in combination.

For safety reasons, the impact mechanism of the present impact power tools usually employs some mechanism to control the start and stop of the impact to protect the operator. In addition, the impact control mechanism and the drive mechanism of the impact-type power tool need to be appropriately configured to ensure a compact configuration of the entire apparatus for ease of operation. For example, in the percussion mechanism of small hand-held hammer drills and/or percussion drills of the order of 2 kg, it is common to use the hammer itself for controlling the percussion, and the driving gear and the safety clutch are arranged outside the hammer pipe. In this impact mechanism, a hammer is disposed inside a hollow piston, and the hammer determines whether to follow the piston back and forth according to the position of the hammer itself. If the head of the hammer is snapped into the front end snap fit mechanism, the hammer will not transmit the impact. Although such impact mechanisms are relatively compact, if the hammer is not jammed when the machine tool is powered on and not pressed against the workpiece, a no-load impact is output, potentially affecting the safety of the operator. In addition, the impact mechanism needs to be provided with a buckling mechanism in the hammering pipe, and the hollow piston occupies the inner space of the hammering pipe, so that the inner diameter of the hammering pipe is limited, and accordingly, the impact energy is limited.

Therefore, in view of the size and safety of impact power tools, there is a need for a compact impact mechanism that avoids idle impacts, and an impact power tool including the same.

Disclosure of Invention

It is an object of the present invention to provide an improved impact mechanism and an impact machine tool comprising the same, which overcome at least one of the above-mentioned disadvantages of the prior art.

To this end, according to an aspect of the present application, there is provided an impact mechanism comprising:

the wall of the hammering pipe is provided with at least one vent hole;

a clutch member configured to rotate with the hammer tube;

a drive gear configured to rotationally drive the hammer tube through the clutch member;

a sliding sleeve configured to slide along the hammer tube;

wherein the sliding sleeve, the clutch component, and the drive gear are configured to be disposed around an outside of the hammer tube; and is

The sliding sleeve is further configured to be movable between a first position and a second position, such that in the first position, the sliding sleeve causes at least one vent of the hammer tube to communicate with ambient atmosphere, and in the second position, the sliding sleeve closes the at least one vent of the hammer tube.

Optionally, a first spring is provided outside the sliding sleeve, the first spring being configured to move or maintain the sliding sleeve to or in the first position.

Optionally, the sliding sleeve is provided with at least one hole, and when the sliding sleeve is in the first position, the at least one hole of the sliding sleeve is correspondingly communicated with the at least one vent hole of the hammering pipe.

Optionally, the hammer pipe is further provided with at least one air inlet hole configured to be not closed by the sliding sleeve when the sliding sleeve is in the second position.

Optionally, the hammer pipe may be detachably connected to the clutch member or the clutch member may be formed integrally with the hammer pipe.

Optionally, the drive gear is pressed against the clutch member by a second spring, and the drive gear and the clutch member are configured as a safety clutch system such that the drive gear is separated from the clutch member when the hammer tube is jammed.

Alternatively, the drive gear may be pressed against the clutch member by a second spring, and the first spring and the second spring may be provided on both sides of the clutch member and the drive gear, respectively.

Optionally, the pressure borne by the first spring is less than the pressure borne by the second spring.

Optionally, the sliding sleeve is configured to extend partially through the clutch component and the driving gear, and the sliding sleeve is provided with at least one cut configured to allow a connection or a portion of the clutch component to pass through.

Optionally, the impact mechanism further comprises a piston, a ram and a striker movably housed within the hammer tube, wherein the piston is located at a first end of the hammer tube, the striker is located at a second end of the hammer tube, and the ram is located between the piston and the striker.

Optionally, the impact mechanism further comprises a sliding collar disposed around an outside of the hammer tube and a bushing disposed around the striker within the hammer tube, the sliding collar abutting the sliding sleeve and being fixedly connected with the bushing such that the sliding sleeve can push or be pushed by the striker.

Optionally, when the sliding sleeve is in the first position, the striker has a certain free movement space along its axial direction, preferably about 1 to 5 mm.

According to a further aspect of the application, an impact power tool is provided, which comprises an impact mechanism as described above.

The impact mechanism of the present invention can ensure that no idle impact is output if the tool of the impact-type power tool is not pressed against a work piece during its use, thereby protecting the safety of the operator. In addition, the invention has compact structure, and the volume of the impact type machine tool is smaller. The sliding sleeve is arranged on the outer side of the hammering pipe, so that the space in the hammering pipe is not occupied, a larger air column is arranged in the hammering pipe, and larger impact energy is easy to realize.

Drawings

Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings, and it should be understood that the embodiments described below are merely illustrative of the present application and do not limit the scope of the present application. In the drawings of the present application, features that are structurally identical or functionally similar are denoted by the same reference numerals. In the drawings:

fig. 1 schematically shows an impact power tool according to an exemplary embodiment of the invention, comprising an impact mechanism, which is schematically illustrated;

FIG. 2 illustrates a partially cut-away perspective view of an assembled impact mechanism in accordance with an embodiment of the present invention, with the sliding sleeve shown in a second position; and

fig. 3 shows an exploded view of an impact mechanism according to an embodiment of the invention.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to examples. It will be understood by those skilled in the art that these exemplary embodiments are not meant to impose any limitations on the invention. Furthermore, the features in the embodiments of the present application may be combined with each other without conflict. In the figures, other components have been omitted for the sake of brevity, but this does not indicate that the impact mechanism and the impact machine tool of the present application may not comprise other components. It should be understood that the dimensions, proportions and numbers of elements in the drawings are not intended to limit the present application.

Fig. 1 schematically shows an impact power tool 100 according to an exemplary embodiment of the present invention, which includes an impact mechanism 104 according to the present invention. As shown in fig. 1, the impact mechanism 104 is housed in the housing 101 and is coupled with the motor 102 through the transmission mechanism 103. The impact mechanism 104 is coupled with a plug mechanism 105 for an insertion tool (e.g., a drill bit). A circuit board, a heat radiation fan, etc. may be further provided inside the housing 101, and a switch 106, a handle 107, a power cord 108, an auxiliary handle 109, etc. may be provided outside the housing 101. Of course, the impact power tool 100 according to the invention can also be provided with a rechargeable battery or the like. The structure of the impact mechanism 104 is generally shown in fig. 1 and will be described in further detail below with reference to fig. 2 and 3.

Fig. 2 shows a partially cut-away perspective view of an assembled impact mechanism according to an embodiment of the invention, and fig. 3 shows an exploded view of an impact mechanism according to an embodiment of the invention. As shown in fig. 2 and 3, the impact mechanism 104 includes the hammer pipe 10, the clutch member 20, and the drive gear 30. The hammering tube 10 is a hollow cylinder, and at least one vent hole 11 is provided on the wall of the hammering tube 10. The clutch member 20 is configured to rotate together with the hammer tube 10. The drive gear 30 is configured to rotationally drive the hammer tube 10 through the clutch member 20. Impact mechanism 104 also includes sliding sleeve 40, which sliding sleeve 40 is configured to slide along hammer tube 10. In the impact mechanism 100 of the present invention, the slide sleeve 40, the clutch member 20, and the drive gear 30 are configured to be arranged outside the hammer pipe 10 around the hammer pipe 10. During operation of the impact mechanism 104, the sliding sleeve 40 is movable along the hammer tube 10 between its first position (i.e., an unloaded position) in which the sliding sleeve 40 causes the at least one vent hole 11 of the hammer tube 10 to communicate with the surrounding atmosphere, and a second position (i.e., a loaded position) in which the sliding sleeve 40 closes the at least one vent hole 11 of the hammer tube 10. Further details regarding the clutch member 20 will be provided below.

The impact mechanism 104 may further include a piston 70, a ram 80, and a striker 90 movably housed within the hammer tube 10, wherein the piston 70 is located at a first end (right end as viewed in fig. 2) of the hammer tube 10, the striker 90 is located at a second end (left end as viewed in fig. 2) of the hammer tube 10, and the ram 80 is disposed between the piston 70 and the striker 90. The piston 70 is coupled to a transmission 103 to be driven by a motor 102. According to an embodiment of the present invention, the striker 90 may have a certain free movement space along its axial direction, preferably 1 to 5mm, when the sliding sleeve 40 is in the first position. For example, when sliding sleeve 40 is in the first position, striker 90 can be retracted inward about 1 to 5mm from the exit of the second end of hammer tube 10, or, although striker 90 reaches the exit of the second end of hammer tube 10, it must be moved about 1 to 5mm before striker 90 pushes sliding sleeve 40, thereby leaving a certain free movement space for striker 90, which has the advantage of controlling the problem of idle impact due to striker bounce. It should be noted that the size of the free movement space described above may be suitably adjusted according to the size of the impact mechanism 104 or the specific use requirements.

According to an embodiment of the present invention, a first spring 50 may be provided outside the sliding sleeve 40, as shown in fig. 2, one end of the first spring 50 abuts against an end flange of the sliding sleeve 40, and the other end abuts against the clutch member 20. Thus, due to the elastic force of the first spring 50, the first spring 50 will move or hold the sliding sleeve 40 to the first position (i.e., the unloaded position). From the perspective of the user, the first position refers to a forward position in a direction facing the work piece, and correspondingly the second position refers to a rearward position in a direction facing the work piece. The driving gear 30 is pressed against the clutch member 20 by the second spring 60, and as shown in fig. 2, one end of the second spring 60 abuts against the driving gear 30, the other end abuts against the chuck 61, and the chuck 61 is fixed to the outside of the hammering pipe 10 by the snap spring 62. Thus, the first spring 50 of the control sliding sleeve 40 and the second spring 60 of the control driving gear 30 are respectively disposed at opposite sides of the clutch member 20 and the driving gear 30.

In addition, in fig. 2 and 3, the sliding sleeve 40 may be provided with a hole 41, and when the sliding sleeve 40 is in the first position, the hole 41 of the sliding sleeve 40 is correspondingly communicated with the vent hole 11 of the hammering pipe 10, so that the air inside the hammering pipe 10 is communicated with the surrounding atmosphere, and when the sliding sleeve 40 is in the second position, the vent hole 11 is closed by the sliding sleeve 40. Of course, by limiting the length of the sliding sleeve 40, the hole 41 may not be provided on the sliding sleeve 40, and the communication and the closing of the vent hole 11 of the hammering pipe 10 can be also achieved. It should be noted that, although only one vent hole 11 of the hammering pipe 10 and one hole 41 of the sliding sleeve 40 are shown in fig. 2 and 3, the vent hole 11 of the hammering pipe 10 and the hole 41 of the sliding sleeve 40 may be provided in plural, for example, 2, 3, 4 or more. The vent hole 11 of the hammer pipe 10 and the hole 41 of the sliding sleeve 40 may have diameters greater than or equal to 2mm, for example, 3mm, 4mm, or 5mm, respectively, in consideration of the venting capacity and response speed of the vent hole 11. In addition, the hammering pipe 10 may be further provided with at least one air intake hole 12, and the air intake hole 12 is configured not to be closed by the sliding sleeve 40 when the sliding sleeve 40 is in the second position, for example, to communicate with the hole 41 of the sliding sleeve 40. Therefore, the air intake holes 12 can ensure that ambient air can enter the internal space of the hammering pipe 10. The at least one air intake hole 12 can have a diameter of less than or equal to 1 mm.

According to an embodiment of the present invention, and as shown in fig. 2 and 3, at least one boss 13 may be provided at an outer side of the hammer pipe 10 (e.g., at a substantially middle position of the hammer pipe 10), and a pin groove 16 may be provided on the at least one boss 13, so that a clutch member 20 (e.g., a clutch disc) may be fitted over the outer side of the boss 13 and detachably connected thereto in a rotational direction by a pin 21 provided in the pin groove 16 of the boss 13, so that the clutch member 20 rotates together with the hammer pipe 10. The driving gear 30 can also be sleeved outside the boss 13 and pressed against the clutch member 20 by the second spring 60. Of course, the hammer pipe 10 may be provided without the boss 13, and the pin groove 16 may be formed directly on the hammer pipe 10. However, the clutch member 20 may be formed integrally with the hammering pipe 10, for example, a clutch member (not shown) is formed on an outer wall of the hammering pipe 10 to be engaged with the driving gear 30, and the driving of the hammering pipe 10 by the driving gear 30 may still be achieved, or other connection structures known in the art may be adopted. In addition, between the clutch member 20 and the driving gear 30, there are also provided features for engaging both, such as a convex portion 22 on the clutch member 20 and a concave portion 32 on the driving gear 30, or balls, etc. In this way, the clutch member 20 and the driving gear 30 form a safety clutch system, also referred to as an overload clutch system. That is, in a normal case, the hammer pipe 10 is rotated by the driving gear 30, but when the hammer pipe 10 is stuck (for example, a bit is stuck), the clutch member 20 is separated from the driving gear 30 to rotate the driving gear 30 alone, which ensures that an excessive torque is not transmitted to the bit, and prevents the bit from being broken or causing other safety accidents. Further, in the case where the clutch member 20 is detachably connected to the hammering pipe 10, the pressure to which the first spring 50 for controlling the sliding sleeve 40 is subjected should be smaller than the pressure to which the second spring 60 for controlling the driving gear 30 is subjected, in consideration of the fact that the clutch member 20 is axially movable along the hammering pipe 10. In this way, the clutch member 20 is not disconnected from the hammering pipe 10. In the case where the clutch member 20 is formed integrally with the hammering pipe 10, the pressure to which the first spring 50 is subjected may not be limited, but is generally smaller than the pressure to which the second spring 60 is subjected, so as to facilitate the start of the impact operation.

According to an embodiment of the present invention, as shown in fig. 3, the sliding sleeve 40 may partially extend through the clutch member 20 and the driving gear 30, and the sliding sleeve 40 may include at least one cut 49, the at least one cut 49 allowing a connection or a portion of the clutch member 20 to pass through. That is, the pin 21 of the clutch member 20 passes through the cutout 49 to detachably connect the clutch member 20 with the hammering pipe 10. Alternatively, when the clutch member 20 is integrally formed with the hammering tube 10, a portion of the clutch member 20 passes through the cutout 49. Since the sliding sleeve 40 forms the cut 49, the sliding sleeve 40 can accordingly include a first portion 42 and a second portion 43, the first portion 42 can be a complete collar portion that does not form a cut, such as a segment of a cylinder, and the second portion 43 can be an incomplete collar portion that forms at least one cut, such as a cylinder segment that forms a cut in the axial direction of the sliding sleeve 40, as shown in fig. 3. The second portion 43 of the sliding sleeve 40 partially passes through the clutch member 20 and the driving gear 30, and the first portion 42 is covered by the second spring 60. The first spring 50 can move or hold the sliding sleeve 40 in the first position. The aperture 41 of the sliding sleeve 40 is preferably disposed on the first portion 42 of the sliding sleeve 40. In fig. 2 and 3, only two cutouts 49 are shown, that is, the second portion 43 of the sliding sleeve 40 includes two incomplete collar portions, forming a split-ended structure. It should be noted that sliding sleeve 40 may be provided with more cutouts 49 to adapt sliding sleeve 40 to hammer the connection of tube 10 to clutch member 20. By having the sliding sleeve 40 extend partially through the clutch member 20 and the drive gear 30, and forming the cutout 49 in the sliding sleeve 40, the structure of the entire mechanism can be made more compact. However, according to another embodiment of the present invention, in case that the length of the hammering pipe 10 is sufficient, as long as the section for sealing the air column in the hammering pipe 10 is disposed forward, the entire sliding bush 40 may be disposed at one side of the clutch member 20 and the driving gear 30 without passing through the clutch member 20 and the driving gear 30. In this case, the sliding sleeve 40 need not be formed with the cutout 49.

According to an embodiment of the invention, the impact mechanism 104 may further include a sliding sleeve ring 44 disposed around the outside of the hammer tube 10 and a bushing 48 disposed around the striker pin 90 within the hammer tube 10. The slide collar 44 abuts against the slide sleeve 40 so that the slide collar 44 receives the transmitted urging force of the first spring 40. A snap spring (not shown) may be provided on the side of the sliding sleeve ring 44 opposite the sliding sleeve 40 to limit the range of movement of the sliding sleeve ring 44. The slip ring 44 and bushing 48 are connected by a pin 45 that passes through a slot 14 in the hammer tube 10, wherein the length of the slot 14 may define the range of movement of the bushing 48. With this structure, sliding sleeve ring 44 and sliding sleeve 40 can be pressed together, and sliding sleeve 40 can push striker 90 or be pushed by striker 90. When the user starts working by pushing the tool against the work piece, the striker 90 is pushed to push the slide sleeve 40 to the second position (i.e., the loaded position) where the vent hole 11 of the hammer pipe 10 is closed. Otherwise, the sliding sleeve 40 is pushed to the first position (i.e., the no-load position) due to the elastic force of the first spring 50, and accordingly, the striker 90 is also pushed. In the first position, the vent hole 11 of the hammer pipe 10 is not closed by the sliding sleeve 40. In addition, in order to buffer the impact between the striker 90 and other components, the impact mechanism 104 is further provided with a plurality of cushions, for example, a cushion 47 provided on one side of the bush 48, as shown in fig. 3, the cushion 47 can buffer between the striker 90 and the bush 48 and transmit the elastic force received by the sliding sleeve 40 to the striker 90 or the thrust received by the striker 90 to the sliding sleeve 40.

The construction of the impact mechanism 104 and the impact power tool 100 according to the invention has been described above, and the use of the impact power tool 100 according to the invention is described below with reference to fig. 1 to 3.

Depending on the work object, the plug-in mechanism 105 of the impact power tool 100 can be used for inserting a plurality of plug-in tools, for example, drills, chisels, etc. The plug-in mechanism 105 is firmly connected to the connecting sleeve 15 of the hammer pipe 10, so that the drill can rotate together with the hammer pipe 10. After the drill bit is mounted, the user can hold the handle 107 (and the auxiliary handle 109, which may be omitted) of the impact power tool 100 with his hand, and turn on the power switch 106, at which time the motor 102 starts to rotate and drives the hammer pipe 10 to rotate through the transmission mechanism 103, thereby rotating the drill bit, but since the sliding sleeve 40 is in the first position, i.e., the idle position, by the elastic force of the first spring 50, the vent hole 11 of the hammer pipe 10 is not closed by the sliding sleeve 40, and therefore, although the piston 70 reciprocates back and forth in the hammer pipe 10, the air in the hammer pipe 10 cannot be discharged through the vent hole 11 to form air pressure, and the hammer 80 cannot be moved, thereby making it impossible to apply impact to the striker 90. Then, when the drill bit is pushed against a work piece (e.g., a concrete wall), the pushing causes the striker 90 to be pushed through the cushion 47, bushing 48, and sliding collar 44 to push the sliding sleeve 40 rearward, causing the sliding sleeve 40 to slide to the second position, closing off the vent hole 11 of the hammer pipe 10. At this time, a closed air column is formed in the hammering tube 10. As the piston 70 moves back and forth, the air pressure within the hammer pipe 10 causes the ram 80 to reciprocate, applying repeated impacts to the striker pin 90. When the pushing of the bit is not applied, the sliding sleeve 40 moves forward to the first position under the action of the first spring 50, so that the vent hole 11 of the hammering pipe 10 is communicated with the surrounding atmosphere again, and thus the hammer 80 is not driven any more and cannot impact the striker 90.

Therefore, the impact mechanism 104 of the present invention makes the entire structure of the impact mechanism 104 more compact by disposing the clutch member 20, the drive gear 30, and the sliding sleeve 40 outside the hammering pipe 10. In addition, the sliding sleeve 40 is used for controlling the impact of the impact hammer 80, so that no idle impact can be output if the tool of the impact type machine tool is not pressed against a working workpiece during use, and the safety of an operator is protected. In addition, the sliding sleeve 40 does not occupy the space in the hammering pipe 10, so that a larger air column is arranged in the hammering pipe 10, and larger impact energy is easy to realize.

The invention has been described in detail with reference to specific preferred embodiments thereof. It will be clear that the embodiments described above and shown in the accompanying drawings are illustrative and should not be construed as limiting the invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention and these changes and modifications may be made without departing from the scope of the invention.

Claims

An impact mechanism (104), the impact mechanism (104) comprising:

the wall of the hammering pipe (10) is provided with at least one vent hole (11);

a clutch member (20), the clutch member (20) configured to rotate with the hammer tube (10);

a drive gear (30), the drive gear (30) configured to rotationally drive the hammer tube (10) through the clutch component (20);

a sliding sleeve (40), the sliding sleeve (40) configured to slide along the hammer tube (10);

characterized in that the sliding sleeve (40), the clutch member (20) and the drive gear (30) are configured to be arranged around the outside of the hammering tube (10); and is

The sliding sleeve (40) is further configured to be movable between a first position and a second position, such that in the first position the sliding sleeve (40) causes at least one vent hole (11) of the hammering tube (10) to communicate with the surrounding atmosphere, and in the second position the sliding sleeve (40) closes the at least one vent hole (11) of the hammering tube (10).
The impact mechanism (104) according to claim 1, wherein a first spring (50) is provided outside the sliding sleeve (40), the first spring (50) being configured to move or hold the sliding sleeve (40) to or in the first position.
The impact mechanism (104) according to claim 1 or 2, wherein the sliding sleeve (40) is provided with at least one aperture (41), and when the sliding sleeve (40) is in the first position, the at least one aperture (41) of the sliding sleeve (40) is in communication with the at least one vent hole (11) of the hammer tube (10), respectively.
The impact mechanism (104) according to any one of claims 1 to 3, wherein the hammer tube (10) is further provided with at least one air inlet hole (12), the at least one air inlet hole (12) being configured to be not closed by the sliding sleeve (40) when the sliding sleeve (40) is in the second position.
The impact mechanism (104) according to any one of claims 1 to 4, wherein the hammer tube (10) is detachably connected with the clutch member (20) or the clutch member (20) is formed integrally with the hammer tube (10).
The impact mechanism (104) according to claim 1 or 2, wherein the drive gear (30) is pressed against the clutch member (20) by a spring, and the drive gear (30) and the clutch member (20) are configured as a safety clutch system such that the drive gear (30) is separated from the clutch member (20) when the hammer tube (10) is jammed.
The impact mechanism (104) according to claim 2, wherein the driving gear (30) is pressed against the clutch member (20) by a second spring (60), and the first spring (50) and the second spring (60) are provided on both sides of the clutch member (20) and the driving gear (30), respectively.
The impact mechanism (104) according to claim 7, wherein the first spring (50) is subjected to a lower pressure than the second spring (60).
The impact mechanism (104) according to any one of claims 1 to 8, wherein the sliding sleeve (40) is configured to extend partially through the clutch component (20) and the drive gear (30), and the sliding sleeve (40) is provided with at least one cut-out (49), the at least one cut-out (49) being configured to allow a connection or a portion of the clutch component (20) to pass through.
The impact mechanism (104) according to any one of claims 1 to 9, wherein the impact mechanism (104) further comprises a piston (70), a ram (80) and a striker (90) movably received within the hammer tube (10), wherein the piston (70) is located at a first end of the hammer tube (10), the striker (90) is located at a second end of the hammer tube (10), and the ram (80) is located between the piston (70) and the striker (90).
The impact mechanism (104) according to claim 10, wherein the impact mechanism (104) further comprises a sliding sleeve ring (44) arranged around the outside of the hammer tube (10) and a bushing (48) arranged inside the hammer tube (10) around the striker pin (90), the sliding sleeve ring (44) abutting the sliding sleeve (40) and being fixedly connected with the bushing (48) such that the sliding sleeve (40) can push the striker pin (90) or be pushed by the striker pin (90).
The impact mechanism (104) according to claim 10 or 11, wherein the striker (90) has a certain free movement space in its axial direction, preferably 1 to 5mm, when the sliding sleeve (40) is in the first position.
An impact machine tool (100) comprising an impact mechanism (104) according to any one of claims 1 to 12.