WO2019129218A1 - 多功能机 - Google Patents
多功能机 Download PDFInfo
- Publication number
- WO2019129218A1 WO2019129218A1 PCT/CN2018/124974 CN2018124974W WO2019129218A1 WO 2019129218 A1 WO2019129218 A1 WO 2019129218A1 CN 2018124974 W CN2018124974 W CN 2018124974W WO 2019129218 A1 WO2019129218 A1 WO 2019129218A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- locking member
- wrench
- output shaft
- driving
- head
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
- B23D51/10—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for hand-held or hand-operated devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
Definitions
- the present invention relates to a multifunction machine, and more particularly to a multifunction machine having a clamping device.
- the multi-function machine is a common multi-function machine in the industry. Its working principle is that the output shaft makes a swing motion around its own axis. Therefore, when the user installs different working heads on the free end of the output shaft, such as a straight saw blade, a circular saw blade, a triangular sanding disc, and a shovel-type scraper, a variety of different operating functions, such as sawing and cutting, can be realized. , grinding, scraping, etc., to adapt to different work needs.
- a multi-functional machine disclosed in Chinese Laid-Open Patent Application No. CN101780668A which comprises a motor, the motor shaft of which is connected with an eccentric pin, and a bearing is sleeved on the eccentric pin to constitute an eccentric wheel structure.
- the eccentric structure can perform an eccentric rotational motion about the axis of the motor shaft.
- the output shaft of the multi-function machine is disposed perpendicular to the motor shaft, and a fixed fork assembly is connected to the output shaft, and the fork assembly is formed with two opposite extending arms, which surround the eccentric structure, and the two extending arms
- the inner side is in close contact with the bearing in the eccentric wheel structure, so that when the eccentric wheel rotates eccentrically, the eccentric wheel structure drives the shifting fork to generate a horizontal oscillating motion, and the output shaft is fixed by the fixed connection of the shift fork and the output shaft. Swing around its axis. After installing different working heads on the free end of the output shaft, the multi-function machine can realize various operating functions under high-speed swing motion.
- the clamping device comprises a clamping unit and a driving unit for driving the clamping unit, and the driving unit is movable in the head shell and can be The position between the several positions is changed to achieve the cooperation with the clamping unit, and the structure of the entire driving unit is relatively complicated and the manufacturing cost is relatively high.
- the technical problem to be solved by the present invention is to provide a multi-functional machine having a simple structure and a small size.
- a multi-functional machine comprising: a housing including a head housing; an output shaft for mounting a working head, the output shaft being at least partially received in the head a housing, and defining an extension direction of the output shaft as an axial direction, a locking member for fixing the working head to the output shaft, the locking member including a rod portion insertable into the output shaft; locking a member for engaging with the rod portion; a driving member for driving the locking member, and the locking member is in a locking position for locking the locking member and releasing the releasing portion of the locking member Switching between; a wrench detachably mounted on the housing; wherein the wrench is detachable from the housing and used to drive the drive member such that the drive member drives the locking member in the lock Position and release position switching.
- the wrench includes a grip portion for holding by an operator and a driving portion for driving the locking member, and the driving portion is shaped with the locking member.
- the stem has a proximal end adjacent the working head and a distal end opposite the proximal end, the locking member for engaging the distal end of the stem.
- the wrench is rotated about an axis parallel to the axial direction for driving the locking member to lock or release the working head.
- the wrench is rotated about an axis perpendicular to the axial direction for driving the locking member to lock or release the working head.
- the wrench is moved in the axial direction to drive the locking member.
- the wrench is detachably received at the top of the head case.
- the top of the head shell is provided with a guide rail, and the wrench is slidably received in the head shell in cooperation with the rail.
- the wrench is detachably received at a side of the head case.
- the housing has a foot portion for inserting a battery pack, and a top of the sole portion is provided with a receiving space, and the wrench is detachably received in the receiving space.
- the top of the head shell is provided with a receiving cavity for receiving the wrench, and the receiving cavity comprises a bottom wall and two side walls connected to the bottom wall, and the receiving cavity is further provided with a step portion.
- the multi-function machine comprises: a housing comprising a head shell; and an output shaft for mounting the working head, The output shaft is at least partially received in the head casing, and defines an extending direction of the output shaft as an axial direction, and a locking member for fixing the working head to the output shaft, the locking member including an insertable portion a stem portion in the output shaft, the stem portion having an end remote from the working head; a locking member for engaging the end; and a wrench for driving the locking member about a direction parallel to the axial direction
- the axis rotates to lock or release the working head; the wrench has a first state received on the head casing and a second state separated from the head casing.
- the wrench includes a grip portion for holding by an operator and a driving portion for driving the locking member, and the driving portion is shaped with the locking member.
- the grip portion has a length of 8-15 cm.
- the grip portion is plastic, and the driving portion is metal.
- the grip portion has an angle with the driving portion, and the angle is 90-120 degrees.
- the wrench is detachably received at the top of the head case.
- the top of the head case is provided with a receiving cavity
- the receiving cavity comprises a bottom wall and two side walls connected to the bottom wall, and the two side walls are provided with a guide rail, and the two sides of the holding part are provided with The guiding groove of the guide rail enables the wrench to be slidably received in the receiving cavity.
- the bottom wall is provided with a protruding spring piece, and a side of the holding portion contacting the bottom wall is provided with a groove, and the groove is engaged with the spring piece.
- the locking member is lower than the bottom wall in the axial direction.
- the wrench is detachably received on one side of the head case.
- the present invention realizes the installation and release of the working head by providing a detachable wrench on the head casing to drive the locking member to switch between the locking locking member and the release locking member, since the wrench of the present invention When driving the locking member, only the wrench needs to be removed from the housing to drive the locking member, and no additional parts need to be provided to make the pivoting or pivoting between the wrench and the housing, thereby saving Unnecessary parts make the overall structure simple and cost-effective, further reducing the size of the parts to make the head shell smaller, and having better accessibility in a small operating space.
- FIG. 1 is a front elevational view of a multifunction machine according to an embodiment of the present invention.
- Figure 2 is a cross-sectional view of the head casing portion of the multifunction machine of Figure 1;
- Figure 3 is an exploded perspective view of some components of the multi-function machine shown in Figure 1;
- FIG. 4 is a cross-sectional view of a portion of the components of the multifunction machine of FIG. 1 with the wrench not mated with the locking member.
- Figure 5 is a perspective view of some of the components of the multifunction machine of Figure 1, wherein the wrench cooperates with the locking member.
- Figure 6 is a perspective view of a multifunction machine according to another embodiment of the present invention.
- Fig. 7 is a perspective view of a multifunction machine according to another embodiment of the present invention.
- Figure 8 is an exploded view of the multifunction machine of Figure 7 along the longitudinal axis X.
- Figure 9 is a schematic illustration of the positioning member of the multifunction machine of Figure 7.
- Figure 10 is a schematic illustration of the locking member of the multifunction machine of Figure 7.
- Figure 11 is a schematic view of the positioning member and the locking member of the multi-function machine of Figure 7 assembled.
- Figure 12 is a schematic view showing the locking member of the multi-function machine of Figure 7 in a locked state.
- Figure 13 is a schematic view showing the locking member of the multi-function machine of Figure 7 in a locked state and a released state.
- Figure 14 is a schematic view showing the locking member of the multi-function machine of Figure 7 in a released state.
- the multi-function machine involved in the embodiment is specifically a swing type multi-function machine, which is also called a multi-function machine.
- the present invention is not limited to the swing multifunction machine, and may be a rotary type grinding multifunction machine such as a sander or an angle grinder.
- FIG. 1 shows a multi-function machine 10 according to an embodiment of the present invention.
- the multi-function machine 10 includes a housing 20, a motor (not labeled) housed in the housing 20, and a fan 31 driven by a motor.
- An internally extending output shaft 34 is detachably mounted to the wrench 70 on the housing 20.
- the straight line of the axis X1 of the output shaft 34 is defined as a longitudinal direction
- the straight line of the axis Y1 of the casing 20 is defined as a horizontal direction
- the lower side of the paper surface is a bottom
- the upper side of the paper surface is a top
- the right side of the paper surface is a front, a paper surface
- the left part is back.
- Fig. 1 when referring to the up and down direction.
- the housing 20 includes a head case 32 for receiving the output shaft 34 at the front end portion, an output shaft 34 extending from the inside of the head case 32, and an output shaft 34.
- the clamping unit 40 is used to clamp the working head 36 in the axial direction of the output shaft 34, and the wrench 70 is used to drive the clamping unit 40.
- the axial direction extends generally along an axis X1 that is parallel to the output shaft 34.
- the output shaft 34 rotates reciprocatingly oscillating motion about its own axis X1, thereby generating a large abrupt torque in both directions of the swing. Therefore, a very large axial clamping force is required to ensure that the above-mentioned working head is held on the output shaft 34 under all working conditions, and there is no slippage which affects work efficiency or is inoperable.
- the multi-function machine 10 provided by the embodiment can meet the above requirements, can provide sufficient clamping force, and can quickly clamp and release the working head by the detachable wrench 70 housed on the housing 20 without With additional aids, the structure is simple and the cost is low.
- a motor (not shown) and an eccentric transmission mechanism (not shown) that converts the rotational motion output from the motor shaft into the swing motion of the output shaft 34 are further provided in the casing 20.
- the eccentric transmission mechanism converts the rotational motion of the motor shaft into an oscillating motion of the output shaft with respect to its own axis X1, and the swing angle is between about 0.5 and 7 degrees, and the swing frequency range can be set to about 5,000 to 30,000 times per minute. .
- the output shaft 34 is hollow and is longitudinally supported between the two rolling bearings 44, 46 in the head casing 32.
- the upper end of the output shaft 34 is received in the housing 32 and is provided with a cavity 48 extending axially therethrough; the lower end is provided with a flange 50 extending out of the housing 32 for mounting the working head 36.
- An axial through hole 52 is also formed in the flange 50, and the through hole 52 communicates with the cavity 48.
- the working head is a straight saw blade, and it will be readily apparent to those skilled in the art that the working head can also be other accessories such as a circular saw blade, a sanding disc, a scraper, and the like.
- the working head is laterally disposed with a flat mounting portion 54 for mounting on the output shaft 34 and a cutting portion 56 for cutting.
- the clamping unit 40 includes a locking member 58 that pivotally locks the locking member 58 about the axis X1 of the output shaft 34 and cooperates with the locking member 58. Further, an elastic member 124 is disposed between the bottom end of the locking member 58 and the inner wall of the head case 32 to provide a spring force of the locking member 58 toward the locking member 60.
- the locking member 60 is used to secure the working head 36 to the flange 50 of the output shaft 34.
- the locking member 60 passes through the mounting portion 54 of the working head 36 and the through hole 52, thereby extending into the cavity 48 of the output shaft 34.
- the locking member 60 includes an annular pressure plate 62 at the bottom and a rod portion 64 extending axially upward from a central portion of the pressure plate 62.
- the rod portion 64 has a proximal end adjacent to the working head and a distal end disposed opposite the proximal end, the rod portion 64 The distal end is provided with an external thread (not shown), and after the rod portion 64 passes through the through hole 52, it cannot rotate relative to the output shaft 34.
- the stem portion 64 of the locking member 60 passes through the cavity 48 of the output shaft 34 and is threadedly locked with the locking member 58 to secure the working head 36 to the flange 50 of the output shaft 34 and clamped Between the bottom surface of the flange 50 and the top surface of the pressure plate 62.
- the locking member 58 is rotatably disposed on the housing 32 about the axis X1 of the output shaft 34 at the upper end of the output shaft 34, that is, the end remote from the working head.
- the locking member 58 can also be rotatably disposed within the cavity 48 of the output shaft 34.
- the locking member 58 has a substantially annular shape and is freely rotatable within the housing 32, and a threaded hole 66 is axially opened therein.
- the wrench 70 is rotated in one direction to drive the locking member 58 to rotate relative to the axis X1, thereby threading the threaded hole 66 of the locking member 58 with the rod portion 64 of the locking member 60.
- the locking member 58 In the locked state, by rotating the wrench 70 in the opposite direction, the locking member 58 can be driven to rotate in the opposite direction with respect to the axis X1, thereby loosening the threaded hole 66 of the locking member 58 and the stem portion 64 of the locking member 60.
- the locking member 60 is provided with a rod portion 64, and a screw hole is formed in the locking member 58, and the present invention is not limited to this configuration. It will be readily apparent to those skilled in the art that the stem portion can also be disposed on the locking member and the threaded bore can be disposed on the locking member 60. At this time, the locking member 60 also needs to be disposed so as not to be rotatable relative to the output shaft 34. .
- the threaded locking of the present invention may be a common single-head threaded fitting, or may be double-headed or multi-headed; the size of the threaded teeth is not limited, and may be coarse or fine; the thread shape may be One of a triangular thread, a rectangular thread, a trapezoidal thread, or a zigzag thread.
- the wrench 70 is generally "L" shaped having a grip portion 71 for gripping by a user and a drive portion 72 for driving the locking member 58.
- the driving portion 72 is made of a metal material
- the grip portion 71 is made of plastic.
- the driving portion has a connecting end (not labeled) connected to the grip portion and the other end opposite to the connecting end, and the driving portion 72 is integrally formed by the same material and connected. The entire end is embedded in the grip portion 71, and the wrench 70 is more structurally strong.
- the driving portion 72 and the grip portion 71 are disposed at an angle, and the angle between the specific grip portion 71 and the driving portion 72 ranges from 90 degrees to 120 degrees, so that the setting is used.
- the wrench 70 is operated, there is sufficient space between the grip portion 71 of the wrench 70 and the upper surface of the head shell 32 for the user to grasp the wrench 70, as specifically shown in FIG. Further, the optional angle is 100 degrees.
- the upper surface of the rear end of the grip portion 71 is further provided with a plurality of ribs 712 arranged in parallel so as to enable the user to push the wrench when the wrench is slid out of the housing.
- the front end of the grip portion 71 is provided with a protrusion 713, and the protrusion is further provided with a non-slip bump.
- the protrusion extends obliquely outward from the front to the rear along the extending direction of the grip portion 71, when the user uses the wrench 70. The thumb is pressed against the rear end of the protrusion 713 to cover the rear end of the grip portion 71, so that the setting can be conveniently operated by the user.
- the driving portion 72 has a hexagonal prism shape for mating with the hexagonal groove at the top of the locking member 58, and the present invention is not limited to this configuration, that is, as long as the driving portion 72 is shaped with the locking member 58.
- the driving portion 72 is a triangular groove on the top of the locking member 58 corresponding to the triangular prism, and the driving portion 72 is a quadrangular prism.
- the locking member 58 is a quadrangular groove.
- a hexagonal recess can be provided on the drive portion 72 and a hexagonal prism can be placed on top of the lock member 58.
- the wrench 70 is detachably received in the head case 32, that is, the wrench 70 shown in FIG. 2 has a first state of being received on the head case 32, and the wrench 70 shown in FIG. 3 has a second state separated from the head case 32, further Referring to FIG. 2 and FIG. 3, the top of the head case 32 has a receiving cavity 33 for receiving the grip portion 71 of the wrench 70.
- the front end of the head case 32 has an opening 38 for receiving the driving portion 72, and the receiving cavity 33 and the opening are provided. 38 is connected.
- the receiving cavity 33 is disposed at the top of the head case 32.
- the receiving cavity 33 has a horizontal bottom wall 35 and two side walls 37 perpendicular to the bottom wall 35.
- the bottom wall 35 and the two side walls 37 A receiving cavity 33 for receiving the wrench 70 is defined in common.
- the length of the wrench 70 of the embodiment of the present invention is long.
- the length of the grip portion 71 of the wrench 70 is 8-15 cm, preferably 15 cm, and the length of the corresponding receiving cavity 33 is also Correspondingly, the receiving cavity 33 extends from the front to the rear to the position of the fan 31. Since the radial dimension of the fan 31 is relatively large, the receiving cavity 33 is provided with a step portion at a position opposite to the fan 31 to ensure that the fan 31 has sufficient The radial dimension, while the corresponding grip portion 71 is correspondingly reduced relative to the thickness of the fan.
- the locking member 58 does not extend into the receiving cavity 33 in the axial direction, that is, in the axial direction, the locking member 58 is lower than the bottom wall 35 in the axial direction, so that the wrench 70 is received in the receiving cavity 33.
- the bottom wall 35 of the receiving cavity 33 can be attached as much as possible, so that the entire wrench 70 is accommodated in the head case 32 without increasing the radial dimension of the entire machine, the structure is more compact, and the man-machine effect is better.
- the opening 38 is recessed rearward from the front end of the head case 32, so that when the entire wrench 70 is received on the head case 32, the driving portion 72 does not protrude outwardly to the outside of the head case 32, and the overall structure is more compact and can also be protected and driven. The effect of the portion 72.
- the left and right side walls 37 of the receiving cavity 33 are further provided with a guide rail 371 extending from the front to the rear.
- the two sides of the grip portion 71 of the wrench 70 are provided with guide grooves 711 matching with the guide rails 371, so that the wrench 70 can slide. It is housed in the receiving cavity 33.
- the bottom wall 35 is also fixedly provided with a spring piece 351 for engaging with a notch (not shown) on the bottom of the grip portion 71 of the wrench 70, and is used for the upper and lower positions of the wrench 70 in the front-rear direction.
- the user manually slides the wrench 70 forward so that the notch of the wrench 70 is released from the spring piece 351 on the bottom wall 35, and continues to slide forward to completely remove the wrench 70 from the receiving cavity 33.
- the guide rail 371 can also be disposed outside the receiving cavity, and specifically can be disposed at the top of the two side walls.
- FIG. 4 to FIG. 5 a specific operation method of the multifunction machine 10 for mounting the working head 36 will be specifically described.
- the wrench is completely removed, the driving portion 72 of the wrench 70 is aligned with the locking member 58, and then the locking member 58 is driven about the axis X1 of the output shaft 34, thereby achieving installation and release of the working head.
- the working head 36 is first mounted between the flange 50 of the output shaft 34 and the locking member 60, and the locking member 60 is inserted into the inner cavity 48 of the output shaft 34. If the opening in the mounting portion 54 of the working head 36 is closed, the locking member 58 needs to be completely disengaged from the locking member 60 to be removed from the output shaft 34, and the locking member 60 is passed through the working head 36. The opening is then mounted into the output shaft 34. If the opening of the working head is machined to be non-closed, a gap is provided through the stem 62 that can pass through the locking member.
- the locking member 60 is inserted into the threaded hole 66 of the locking member 58 such that the external thread of the top end of the rod portion 64 contacts the threaded hole 66 of the locking member 58 and pushes the locking member 58 axially by a certain distance until the locking member
- the platen 62 of 60 abuts against the lower surface of the mounting portion 54 of the working head 36, and the upper surface of the mounting portion 54 of the working head 36 abuts against the lower surface of the flange 52 of the output shaft 34.
- the user pushes the grip portion 71 of the wrench 70 forward, so that the groove in the grip portion 71 is released from the elastic piece and slides out of the receiving cavity 33 along the guide rail until the wrench 70 is completely removed from the head case 32.
- the driving portion 72 of the wrench 70 is inserted into the corresponding recess of the locking member 58, and the rotating wrench can drive the locking member 58 to rotate relative to the locking member 60. Since the threaded hole 66 of the locking member 58 is threadedly engaged with the stem portion of the locking member 60, the locking member 60 is axially moved upward while being rotated by the screwing force.
- the locking member 60 is further moved up by the driving portion 72, and the axial gap between the working head 36 and the locking member 60 and the flange 52 of the output shaft 34 is eliminated until it is felt that the operating member 68 is difficult to rotate.
- the working head 36, the locking member 58 and the flange 52 respectively have very large axial positive pressures with each other, correspondingly have a very large frictional force, so that sufficient torque can be transmitted to prevent the working head 36 from Relative sliding occurs between the locking member 60 and the flange 52 of the output shaft 34, which affects work efficiency.
- the wrench is slidably received in the receiving cavity. At this time, the wrench 70 is disengaged from the locking member 58 to prevent the locking member 58 from driving the wrench 70. Swing together.
- the multifunction machine 10 of the present invention drives the clamping unit 40 housed in the head case 32 by using a wrench 70 detachably mounted on the top of the head case 32, without using other auxiliary tools,
- the quick drive locking member 58 is locked or disengaged from the locking member 60 to enable quick installation or removal of the working head 36. Since the locking member 58 and the locking member 60 are screwed by the rotation of the wrench 70, it is ensured that the axial positive pressure received by the working head 36 is sufficiently large, so that the working head 36 is stably and reliably mounted on the output shaft 34. In the above, the work head 36 is prevented from slipping under any working environment, and the work efficiency of the work head 36 is improved.
- the locking member 58 is disposed at an end of the output shaft 34 away from the flange 52, that is, the locking member 58 is disposed at an end of the output shaft 34 away from the working head 36, so that when the user uses the wrench 70 to drive the locking member 58, Touch the work head 36 to avoid touching the work head, thus preventing accidental injury to the operator. And the wrench 70 is detached from the housing to drive the locking member 58, and the additional wrench is not required to allow the wrench 70 to be pivotally disposed on the head casing 32.
- the component is saved, and on the other hand, the structure can be further simplified. Reduce the size of the head shell. In this way, the multi-function machine of the present invention can complete the fixing and releasing of the working head by the wrench detachably mounted on the head casing, and the structure is simple, the cost is reduced, and the operation is safe.
- FIG. 6 there is shown a perspective view of a multifunction machine 10 according to another embodiment of the present invention.
- the structure is substantially the same as that of the first embodiment, except that the wrench 70 is detachably received on one side of the head case, that is, the receiving cavity is opened at the side of the head case, and the opening is also provided at the front end of the head case.
- the height of the entire oscillating machine in the axial direction can be effectively reduced, so that the oscillating machine can enter some relatively small space operations, and the accessibility is better.
- FIG. 7 to 14 illustrate a multifunction machine according to another embodiment of the present invention.
- the structure is substantially the same as that of the multi-function machine of the foregoing embodiment, except for the storage position of the wrench 70 and the structure of the clamping unit.
- a specific wrench 70 is detachably received at one end of the housing 20 away from the head case 32.
- the preferred multi-function machine 10 is a DC multi-function machine, and the multi-function machine 10 has a battery pack for plugging (
- the shank portion 21 of the foot portion 21 is provided with a receiving space 211 extending vertically in the axial direction.
- the receiving space 211 is for receiving the wrench 70.
- the wrench can be prevented from being placed on the head shell, and the size of the head shell can be relatively small, so that it has better accessibility and is convenient for working in a small space.
- the provision of the wrench at the end of the housing can also be applied to the aforementioned multi-functional machine solution.
- the accommodating space 211 of the accommodating wrench 70 can also be inclined to increase the length of the accommodating space, thereby appropriately increasing the size of the wrench and facilitating the use of the wrench by the user.
- the clamping unit includes a locking member 60 for securing the working head 36 to the output shaft 34 and a locking member 58 for clamping the locking member 60.
- the locking member 58 is located in the multifunction machine. 10 is supported by the output shaft 34.
- the output shaft 34 since the output shaft 34 is hollow, it has an accommodation space 48 therein.
- the accommodating space 48 has an upper surface 481 and a lower surface 482 which are disposed opposite to each other in the longitudinal direction.
- the locking member 58 is located within the receiving space 48, and the stem portion 64 of the locking member 60 can also be inserted into the receiving space 48 for locking engagement with the locking member 58.
- the locking member 58 has at least two positions: a locking position and a release position.
- the locking member 58 In the locked position, as shown in Figure 12, the locking member 58 locks the locking member 60; in the released position, as shown in Figure 14, the locking member 58 releases the locking member 60 such that the locking member 60 can be released.
- the locking member 58 includes a main body 581 and a limiting portion 582 provided by the protruding body 581.
- the limiting portion 582 is integrally formed with the body 581.
- the body 581 is in locking engagement with the locking member 60 when in the locked position and is loosely mated with the locking member 60 when in the released position.
- the main body 581 has a substantially flat shape.
- An opening 583 is provided in the main body 581 so as to extend longitudinally.
- the radius of the opening 583 is greater than the radius of the stem portion 64 of the locking member 60 such that the stem portion 64 can pass through the opening 583.
- the mating between the opening 583 and the stem portion 64 allows the locking member 583 to lock or release the locking member 60.
- the rod portion 64 passes through the opening 583 and a gap can be formed between the outer circumferential side of the rod portion 64 and the circumferential inner wall 584 of the opening 583.
- the inner wall 584 of the hole 583 is disengaged from the rod portion 64.
- the body 581 at this time is in the release position.
- the rod portion 64 passes through the opening 583 at this time and the outer circumferential side of the rod portion 64 abuts against the inner wall 584 of the opening 583.
- the opening 583 is located at a central location of the body 581.
- the body 581 also has opposite sides: a first side 585 and a second side 586.
- the stop 582 is located at the second side 586 of the body 581.
- the limiting portion 582 protrudes from the rear of the main body 581 in one direction. Therefore, the main body 581 and the limiting portion 582 substantially constitute an L shape.
- the extending direction of the limiting portion 582 is a direction close to the working head 36.
- the function of the limiting portion 582 is to provide a limit to the body 581.
- the second side 586 is constrained to cause a change in the overall relative position of the body 581.
- the limiting portion 582 abuts against the lower surface 482 of the output shaft 34 such that the output shaft 34 acts to limit the limiting portion 582.
- the lower surface 482 constitutes a stop.
- the clamping unit also has a drive member that connects and drives the locking member 58.
- the drive member is located within the head housing 32.
- the drive member can drive the position of the locking member 58 to change.
- the drive member operatively switches the locking member 58 between the locked position and the released position.
- the drive member includes a positioning member 9 that connects the locking member 58.
- the positioning member 9 can drive the locking member 58 to move longitudinally.
- the positioning member 9 is located within the receiving space 48 of the output shaft 34.
- the positioning member 9 includes a positioning post 91 and a positioning sleeve 92 that connects the positioning post 91.
- the positioning post 91 and the positioning sleeve 92 are preferably integrally formed.
- the positioning post 91 is disposed in the longitudinal direction.
- the positioning sleeve 92 is hollow inside and forms a positioning cavity.
- the positioning cavity can accommodate the locking member 58.
- the locating sleeve 92 is generally an annular cavity formed by side walls 93.
- the radial radius of the annular cavity is slightly larger than the radial radius of the positioning post 91, so that a shoulder 94 is formed between the positioning sleeve 92 and the positioning post 91.
- the side wall 93 is not of a closed design but has a notch to form a generally C-shaped configuration.
- the locking member 58 can fit into the positioning sleeve 92 just from the gap.
- the locating sleeve 92 also forms an assembled relationship with the locking member 58 through the side wall 93, preferably in an assembled relationship with the first side 585 of the locking member 58.
- the first side 585 of the locking member 58 is provided with a mounting portion 587 that connects the drive members.
- the mounting portion 587 is for connection with the side wall 93 of the positioning sleeve 92 of the drive member.
- Mounting portion 587 has a laterally extending pivot joint 588.
- the pivot joint 588 has an annular side. The annular side is smooth and the annular side is thick and gradual, i.e. the radial radius of the annular side varies.
- the side wall 93 of the positioning sleeve 92 is provided with a mating portion 95 corresponding to the pivot joint 588.
- the mating portion 95 is a through hole that receives the pivot joint 588.
- the perforations and the indentations of the side walls 93 are located just at the ends of the annular diameter such that the locking member 58 enters the positioning sleeve 92 from the indentation, and the pivot joint 588 of the first side 585 is just snapped onto the perforations of the side wall 93.
- the positioning sleeve 92 also has a top wall 96 and a bottom portion 97 that are longitudinally disposed.
- the top wall 96 is closer to the positioning post 91, and the bottom 97 is further away from the positioning post 91.
- the top wall 96 has a first opening 961 that communicates with the interior of the positioning post 91.
- the first opening 961 corresponds exactly to the opening 583 in the locking member 58, such that the stem portion 64 of the locking member 60 can pass through the opening 583 and the first opening 961 in sequence. And partially enters the interior of the positioning post 91.
- a first elastic member 8 is also provided between the top wall 96 and the locking member 58.
- the first elastic member 8 is located adjacent to the second side 586.
- the first resilient member 8 functions to longitudinally bias the second side 586 of the body 581.
- the top wall 96 is further provided with a first blind hole 81 for accommodating one end of the first elastic member 8, and at the second side 586 of the main body 581, correspondingly for accommodating the first elastic member 8 A second blind hole 82 at one end.
- the first elastic member 8 is housed between the first blind hole 81 and the second blind hole 82.
- the first elastic member 8 is a cylindrical compression spring.
- the number of the first elastic members 8 is two, and the two first elastic members 8 are arranged side by side and are symmetrical with respect to the mounting portion 587 of the first side 585.
- the number of the first blind hole 81 and the second blind hole 82 are also respectively corresponding to two.
- the bottom 97 of the locating sleeve 92 is provided with a centrally open support flange 98.
- the support flange 98 extends radially inward from the side wall 93.
- the main body 581 of the locking member 58 is provided with a step portion 589 which can abut against the support flange 98. Step portion 589 is used to limit body 581.
- An opening is formed in the center of the bottom portion 97 in order to make room for the longitudinal extension of the limiting portion 582.
- the stop portion 582 can partially pass through the opening in the bottom portion 97 to form a fit with other components.
- the second side 586 of the body 581 is biased by the first elastic member 8 on the one hand, and the first side 585 of the main body 581 is longitudinally movable by the driving action of the positioning member 9 on the one hand.
- the body 581 can effect a swing between the clamped position and the released position of the stem 64.
- the driving member mainly includes a cam member 11 for operation and a pressing rod 12 and a second elastic member 13 that are movably coupled to the cam member 11.
- An opening 112 is defined in the cam member for engaging with the driving portion 72 on the wrench 70.
- the user removes the wrench 70 from the housing 20, inserts the wrench 70 into the opening in the cam member 11, and then rotates the wrench 70 to rotate the cam member 11 about an axis.
- the axis is horizontally disposed and perpendicular to the longitudinal axis of the output shaft 34.
- the extending direction of the rotating shaft 14 constitutes the rotating axis, so that the wrench drives the cam member 11 to rotate about the rotating shaft 14.
- the cam member 11 has a shaft hole 111 through which the rotating shaft 14 is received.
- the cam member 11 has a cam surface profile with a varying radius.
- a bracket 15 for positioning is provided outside the head case 32.
- the bracket 15 is provided with a hole for receiving the rotating shaft 14 to pass therethrough.
- the rotary shaft 14 sequentially passes through the rotary shaft hole 111 on the cam member 11 and the hole in the bracket, thereby connecting the cam member 11 and the bracket 15.
- the bracket 15 is coupled to the head case 32 in a variety of manners such as bolting or integral molding.
- the pressure bar 12 is disposed within the accommodation space 48 of the output shaft 34.
- the pressure bar 12 is disposed longitudinally and is drivable in a longitudinal direction.
- the plunger 12 includes a first end 122 that is engageable with the cam member 11 and a second end 123 that is opposite the first end 122.
- the second end 123 is used for the positioning member 9 to be mated.
- the second end 123 of the pressing rod 12 is provided with an external thread
- the positioning post 91 of the positioning member 9 is provided with an internal thread, so that the pressing rod 12 and the positioning member 9 are threadedly matched.
- the pressure bar 12 and the positioning member 9 can also adopt other mating forms.
- the pressing rod 12 is biased by the second elastic member 13.
- the lever 12 is biased in a direction toward the end of the output shaft 34 adjacent the working head.
- the pressure bar 12 also has a radially outwardly convex radial flange 121 between the first end 122 and the second end 123.
- One end of the second elastic member 13 abuts on the radial flange 121 to provide a biasing force toward the closed end.
- the shoulder 94 on the positioning member 9 constitutes a radially outwardly projecting boss.
- a spacer 99 is also provided on the boss. The other end of the second elastic member 13 abuts on the spacer 99. The spacer 99 can also be engaged by the output shaft 34 to have a limit.
- the second elastic member 13 may include various types of elastic members such as a compression spring.
- a portion of the pressure bar 12 extends beyond the output shaft 34 and is selectively in contact with the cam surface profile of the cam member 11. Since the radius of the cam surface profile is gradual, as the cam member 11 rotates with the wrench, the position of the cam surface profile contacting the pressing rod 12 also changes, so that the biasing force of the second elastic member 13 can be overcome to push the pressing rod 12 toward the output. The free end of the shaft 34 moves. Once the cam member 11 is rotated to disengage the cam surface profile from the contact pressure bar 12, the pressure bar 12 moves in the direction of the working head 36 along the axis of the output shaft 34 under the biasing force.
- the specific operation process of the quick change clamping device of the multifunctional machine of the present invention is as follows. As shown in FIG. 13, when the stem portion 64 of the locking member 4 is inserted into the opening 583 in the locking member 58, when the user removes the wrench from the housing 20, the driving portion 72 of the wrench 70 is then inserted into the driving member. When the wrench driving cam member 11 is rotated into the position of FIG. 13 in the opening 112 on the cam member 11, the pressing rod 12 is caused to move the positioning member 9 longitudinally away from the wrench 70. At this time, the limiting portion 582 of the second side 586 of the locking member 58 and the stopping portion of the output shaft 34 are stopped.
- the wrench 70 continues to drive the cam member 11 to rotate to the position shown in FIG. 14, and presses the pressing rod 12 to move further downward, thereby driving the positioning member 9 to continue to move vertically downward; the second side 586 of the locking member 58 is stopped.
- the stop while the pivot joint 588 of the first side 585 continues to move longitudinally downwards by the positioning member 9, so that the locking member 5 is integrally rotated about a line perpendicular to the longitudinal axis of the output shaft 34 to a horizontal position, and relative to The longitudinal axis of the output shaft 34 is in a vertical position; at this time, the opening 583 of the locking member 58 is not in contact with the rod portion 64 of the locking member 4, and the locking member 4 is in a released state, which can be easily removed from the output shaft 34. Was taken off.
- the cam member 11 When the user rotates the wrench 70 driving cam member 11 back to the position shown in FIG. 12, the cam member 11 is disengaged from the contact lever 12. Under the action of the second elastic member 13, the pressing rod 12 drives the positioning member 9 to move up longitudinally, and the locking member is matched by the connection between the pivot joint 588 of the locking member 58 and the mounting portion 587 on the positioning sleeve 92. The first side 585 of 58 also drives up. At the same time, since the first elastic member 8 is disposed between the second side 586 of the locking member 58 and the positioning member 9, the second side 586 of the locking member 58 is moved upward by the elastic force. The net result is that the locking member 58 returns to a state that is inclined relative to the longitudinal axis of the output shaft 34 and thereby grips the stem portion 64 of the locking member 60.
- the pressing rod 12 overcomes the elastic force of the second elastic member 13 to move the positioning member 9 downwardly, so that the locking member 58 returns to the horizontal state, and the locking is unloaded.
- the lateral clamping force generated between the opening 583 of the member 58 and the locking member 4 allows the locking member 60 to move freely axially and is disassembled by the user.
- the present invention may also not provide a cam member, that is, the driving portion 72 of the wrench 70 directly drives the pressing rod 12, and the wrench moves along the axial direction of the output shaft 32 to drive the pressing rod 12 to overcome the elastic force of the second elastic member 13 to drive the positioning member.
- 9 is moved down longitudinally to return the locking member 58 to the horizontal state, unloading the lateral clamping force generated between the opening 583 of the locking member 58 and the locking member 4, so that the locking member 60 can move freely axially, The user disassembles it.
- the present invention provides a detachable wrench 70 on the housing 20.
- the wrench When the user needs to replace the working head of the multi-function machine, only the wrench needs to be removed, and then the wrench is driven to drive the driving member, and the further driving member drives the locking member. Switch between the locking position of the locking lock and the release position of the release lock.
- the detachable setting of the wrench on the housing can be easily used by the user to prevent loss, and the driving member is located on the side away from the working head, and the user is safer when operating the wrench.
- the driving member and the locking member are two separate components. Of course, it can also be provided as a component or an integral one.
- the locking member in the first embodiment of the present invention refer to the locking member in the first embodiment of the present invention.
- the top of the hexagonal recess, the top of the locking member is equivalent to the driving member in the embodiment, and the wrench drives the top movement of the locking member to further drive the locking member in the locking position of the locking locking member and the locking member Switch between release
- the present invention is not limited to the specific embodiment structures, and the structures based on the inventive concept are all within the scope of the present invention.
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Abstract
一种多功能机(10),包括:壳体(20),壳体包括头壳(32);用于安装工作头(36)的输出轴(34),输出轴至少部分收容于头壳,且定义输出轴的延伸方向为轴向方向;用于将工作头固定在输出轴上的锁定件(60),锁定件包括可插入输出轴内的杆部(64);用于与杆部配合的锁紧件(58);用于驱动锁紧件的驱动件(9),其使锁紧件在锁定锁紧件的锁定位置和松开锁紧件的释放位置之间切换;以及,可拆卸地安装在壳体上的扳手(70),扳手能够从壳体上分离,并用于驱动驱动件使其带动锁紧件在锁紧位置及释放位置之间切换。如此通过可拆卸的安装在头壳上的扳手实现工作头的固定及释放,结构简单、操作安全。
Description
本发明涉及一种多功能机,尤其涉及一种具有夹紧装置的多功能机。
多功能机是业界常见的多功能机,它的工作原理是输出轴围绕自身的轴心线做摆动运动。因此,当用户在输出轴的自由端上安装有不同的工作头后,如直锯片、圆锯片、三角形磨砂盘、铲型刮刀后,可以实现多种不同的操作功能,如锯、切、磨、刮等,以适应不同的工作需求。
中国公开专利申请第CN101780668A号,公开的一种多功能机,包括马达,马达的马达轴连接有偏心销,在偏心销上套设有轴承,从而构成一个偏心轮结构。当马达轴旋转时,偏心轮结构可以围绕马达轴的轴心线做偏心旋转运动。多功能机的输出轴是垂直于马达轴设置的,在输出轴上固定的连接有一个拨叉组件,拨叉组件形成有相对的两个延伸臂,将偏心轮结构包围,两个延伸臂的内侧均与偏心轮结构中的轴承紧密接触,从而当偏心轮做偏心旋转时,偏心轮结构会带动拨叉产生水平方向上的摆动运动,又借助拨叉与输出轴的固定连接,使输出轴围绕其轴心线做摆动。在输出轴的自由端安装不同的工作头后,多功能机即可以在高速的摆动运动下实现多种操作功能。
但是,目前的多功能机采用结构较为复杂成本较高的工作头夹紧装置,夹紧装置包括夹紧单元及驱动夹紧单元的驱动单元,驱动单元可活动的设置在头壳,并且能够在几个位置之间变换从而实现与夹紧单元的配合,整个驱动单元的结构比较复杂并且制造成本比较的高。
因此,实有必要提供一种改进的多功能机,以解决上述问题。
发明内容
本发明所要解决的技术问题是:提供一种具有结构简单低成本尺寸小的多功能机。
为解决上述技术问题,本发明所采用的技术方案如下:一种多功能机,包括:壳体,包括头壳;输出轴,用于安装工作头,所述输出轴至少部分收容于所述头壳,且定义输出轴的延伸方向为轴向方向,锁定件,用于将所述工作头固定在所述输出轴上,所述锁定件包括可插入所述输出轴内的杆部;锁紧件,用于与所述杆部配合;驱动件,用于驱动所述锁紧件,并使所述锁 紧件在锁定所述锁定件的锁紧位置和松开所述锁定件的释放位置之间切换;扳手,可拆卸地安装在所述壳体上;其中所述扳手能够从所述壳体上分离并用于驱动所述驱动件使得所述驱动件带动所述锁紧件在锁紧位置及释放位置切换。
优选的,所述扳手包括用以供操作者握持的握持部以及用以驱动所述锁紧件的驱动部,所述驱动部与所述锁紧件形配。
优选的,所述杆部具有靠近所述工作头的近端及与近端相对的远端,所述锁紧件用于与所述杆部的远端配合。
优选的,所述扳手围绕平行于轴向方向的轴线转动用以驱动所述锁紧件从而锁紧或释放工作头。
优选的,所述扳手围绕垂直于轴向方向的轴线转动用以驱动所述锁紧件从而锁紧或释放工作头。
优选的,所述扳手沿着轴向方向移动用以驱动所述锁紧件。
优选的,所述扳手可拆卸的收容在所述头壳的顶部。
优选的,所述头壳的顶部设有导轨,所述扳手与所述导轨配合滑动收容于所述头壳。
优选的,所述扳手可拆卸的收容在所述头壳的侧部。
优选的,所述壳体具有用以插接电池包的脚掌部,所述脚掌部的顶部开设有收容空间,所述扳手可拆卸的收容在所述收容空间内。
优选的,所述头壳顶部设有收容所述扳手的收容腔,所述收容腔包括底壁及与底壁相连的两侧壁,所述收容腔还设有台阶部。
为了解决上述技术问题,本发明采用的另一个技术方案是,一种多功能机,其特征在于:所述多功能机包括:壳体,包括头壳;输出轴,用于安装工作头,所述输出轴至少部分收容于所述头壳,且定义输出轴的延伸方向为轴向方向,锁定件,用于将所述工作头固定在所述输出轴上,所述锁定件包括可插入所述输出轴内的杆部,所述杆部具有远离所述工作头的末端;锁紧件,用于与所述末端配合;扳手,用于驱动所述锁紧件围绕平行于轴向方向的轴线转动从而锁紧或释放工作头;所述扳手具有收容在头壳上的第一状态及从头壳上分离的第二状态。
优选的,所述扳手包括用以供操作者握持的握持部以及用以驱动所述锁紧件的驱动部,所述驱动部与所述锁紧件形配。
优选的,所述握持部的长度为8-15cm。
优选的,所述握持部为塑料,所述驱动部为金属。
优选的,所述握持部与所述驱动部之间具有夹角,所述夹角为90—120度。
优选的,所述扳手可拆卸的收容在所述头壳的顶部。
优选的,所述头壳顶部设有收容腔,所述收容腔包括底壁及与底壁相连的两侧壁,所述两侧壁上设有导轨,所述握持部两侧设有与导轨相配合的导槽使得所述扳手能够滑动收容于所述收容腔内。
优选的,所述底壁上设有一突出的弹簧片,所述握持部与所述底壁相接触的一面设有凹槽,所述凹槽与弹簧片相卡持。
优选的,所述锁紧件在轴向方向上低于所述底壁。
优选的,所述扳手可拆卸的收容在所述头壳的一侧。
与现有技术相比,本发明通过在头壳上设置一个可拆卸的扳手来驱动锁紧件在锁定锁定件和释放锁定件之间切换,从而实现工作头的安装及释放,由于本发明扳手的在驱动锁紧件时只需要将扳手从壳体上取下后驱动锁紧件,不需要设置额外的零件来使得扳手与壳体之间进行旋转枢转或者翘动枢转,因此节省了不必要的零件,使得整体结构简单节省成本,进一步的减少了零部件使得头壳的尺寸更小,在狭小的操作空间下具有更好的接近性。
图1为本发明一实施例所示多功能机的正视图;
图2为图1所示多功能机中头壳部分的剖视图;
图3为图1所示多功能机中部分元件的立体分解图;
图4为图1所示多功能机中部分元件的剖视图,其中扳手未与锁紧件配合。
图5为图1所示多功能机中部分元件的立体图,其中扳手与锁紧件配合。
图6为本发明另一实施例所示多功能机的立体图。
图7为是本发明另一实施例的多功能机的立体图。
图8是图7中的多功能机沿纵向轴线X的分解图。
图9是图7中的多功能机的定位件的示意图。
图10是图7中的多功能机的锁紧件的示意图。
图11是图7中的多功能机的定位件和锁紧件装配后的示意图。
图12是图7中的多功能机的锁紧件处于锁紧状态的示意图。
图13是图7中的多功能机的锁紧件处于锁紧状态与释放状态之间的示意图。
图14是图7中的多功能机的锁紧件处于释放状态的示意图。
下面结合附图及具体实施方式对本发明作进一步的详细说明。
本实施方式中涉及的多功能机具体是一种摆动型多功能机,又称多功能机。但是本发明并不限于摆动多功能机,也可以是转动型研磨多功能机,如砂光机或角向磨光机等。
图1所示为本发实施方式揭示的多功能机10,该多功能机10包括壳体20,收容于壳体20内的马达(未标号)及由马达驱动的风扇31,自壳体20内部延伸出的输出轴34,可拆卸的安装在壳体20上的扳手70。将输出轴34的轴线X1所在直线定义为纵向,壳体20的轴线Y1所在直线定义为横向,纸面的下为底部,纸面的上为顶部,纸面的右部为前,纸面的左部为后。本发明中凡涉及上下前后方向时均参照图1。
图2所示为本发明中多功能机10的头部区域,壳体20包括位于前端部分收容输出轴34的头壳32、自头壳32的内部延伸出的输出轴34、安装在输出轴34末端的工作头36以及用以将工作头36固定在输出轴34末端的夹紧单元40。夹紧单元40用于在输出轴34的轴向方向上夹紧工作头36,扳手70用以驱动夹紧单元40。轴向方向大致沿平行于输出轴34的轴线X1延伸。
多功能机工作时,输出轴34围绕其自身轴线X1旋转往复摆动运动,从而沿摆动的两个方向产生较大的突变扭矩。因此,需要非常大的轴向夹持力来确保在所有的工作条件下将上述工作头保持在输出轴34上,并不会出现打滑而影响工作效率或无法工作。本实施方式所提供的多功能机10能够满足上述需求,可以提供足够的夹持力,并能通过可拆卸的收容在在壳体20上的扳手70方便快速夹紧和释放工作头,而无需使用另外的辅助工具,结构简单且成本较低。
壳体20内还设置有马达(未图示)、及将马达轴输出的旋转运动转变为输出轴34的摆动运动的偏心传动机构(未标号)。该偏心传动机构将马达轴的转动运动转化成输出轴相对于其自身轴线X1的摆动运动,且摆动角在约0.5至7度之间,并且摆动频率范围可设置为约每分钟5000至30000次。
再参见图2,输出轴34为中空状,纵向支撑在头壳32内的两个滚动轴承44、46之间。输出轴34上端收容在壳体32内并设有轴向贯穿自身的腔体48;下端设有延伸出壳体32用于安装工作头36的法兰盘50。法兰盘50上还开设有轴向的通孔52,该通孔52连通上述腔体48。
工作头为一种直锯片,对本领域技术人员来说,很容易想到,工作头也可以是其它附件,如圆锯片、砂盘、刮刀等。该工作头横向设置,其具有用于安装在输出轴34上的平板状安装部54以及用于切割的切割部56。
夹紧单元40包括围绕输出轴34的轴线X1可枢转地锁紧件58、与锁紧件58配合的锁定件60。进一步地,锁紧件58的底端与头壳32的内壁之间设有弹性件124,以提供锁紧件58朝着与锁定件60配合的弹簧力。
锁定件60用于将工作头36固定在输出轴34的法兰盘50上。锁定件60穿过工作头36的安装部54和通孔52,进而伸至输出轴34的腔体48内。锁定件60包括位于底部的环状压板62和自压板62的中部轴向向上延伸的杆部64,杆部64具有靠近工作头的近端及与近端相对设置的远端,杆部64的远端设有外螺纹(图中未示),且杆部64穿过通孔52后,不能相对输出轴34转动。安装时,锁定件60的杆部64穿过输出轴34的腔体48,并与锁紧件58螺纹锁紧,从而将工作头36固定在输出轴34的法兰盘50上,并夹持在法兰盘50的底面和压板62的顶面之间。
锁紧件58围绕输出轴34轴线X1可转动地设置在壳体32上,位于输出轴34的上端即远离工作头的一端。当然,如本领域技术人员所理解的,锁紧件58也可以旋转地设置在输出轴34的腔体48内。锁紧件58大致呈圆环状,能够在壳体32内自由旋转,其中部轴向开设有螺纹孔66。沿一个方向旋转扳手70,带动锁紧件58相对轴线X1旋转,从而使锁紧件58的螺纹孔66与锁定件60的杆部64螺纹锁紧。在锁紧状态下,沿相反方向旋转扳手70,则可驱动锁紧件58相对轴线X1反向旋转,从而使锁紧件58的螺纹孔66与锁定件60的杆部64松开。
需要指出,本实施方式中,锁定件60设有杆部64,锁紧件58上开设螺纹孔,本发明并不限于这种结构。对本领域技术人员来说,很容易想到,也可以将杆部设置在锁紧件上,而将螺纹孔设置在锁定件60上,此时同样需要将锁定件60设置成不可相对输出轴34转动。另外,本发明所指的螺纹配合锁紧,可以是普通单头螺纹配合,也可以是双头或多头;螺纹牙的大小也不 限,可以是粗牙或细牙;螺纹牙型形状可以是三角形螺纹、矩形螺纹、梯形螺纹、锯齿形螺纹中的一种。
输出轴34摆动运动时,会带动工作头36、夹紧单元40一起摆动。
参照图3,扳手70大致呈“L”型,其具有用以供使用者握持的握持部71和用于驱动锁紧件58的驱动部72。本实施方式中,为了在不影响扳手70结构强度的前提下降低扳手70的重量,驱动部72采用金属材质,握持部71采用塑料制成。
进一步的参照附图3为了进一步增加扳手70整体的刚性,驱动部具有与握持部连接的连接端(未标号)以及与连接端相对设置的另一端,驱动部72由同一材料一体成型,连接端整个埋设于握持部71内,如此设置,扳手70整个结构强度更好。另外为了提升使得者的操作舒适性,驱动部72与握持部71之间呈角度设置,具体的握持部71与驱动部72之间的角度范围为90度-120度,如此设置使得使用者在操作扳手70时,扳手70的握持部71与头壳32的上表面之间有足够的空间供使用者抓握扳手70,具体可参照附图5。进一步,可选的角度为100度。
握持部71后端上表面还设有若干平行设置的凸纹712,用以使得用户将扳手从壳体滑移出时,能够更好的施力推抵。握持部71的前端两侧设有凸起713,该凸起上还设有防滑凸点,凸起自前向后沿着握持部71的延伸方向向外倾斜延伸,当用户使用扳手70时,大拇指抵压在凸起713上另外四个手指包覆握持部71的后端,如此设置能够方便用户操作。
驱动部72为六棱柱形状用以与锁紧件58顶部的六角形凹槽配合,本发明并不限于这种结构,即只要驱动部72与锁紧件58形配。例如驱动部72为三棱柱对应的锁紧件58的顶部为三角形的凹槽,驱动部72为四棱柱对于的锁紧件58则为四角形凹槽。当然对本领域技术人员来说,很容易想到,也可以将六角形凹槽设置在驱动部72上,将六棱柱设置在锁紧件58顶部。
扳手70可拆卸的收容在头壳32,即参照图2所示扳手70具有收容在头壳32上的第一状态以及参照图3所示扳手70具有从头壳32上分离的第二状态,进一步的参照图2及图3所示,头壳32的顶部具有用以收容扳手70握持部71的收容腔33头壳32的前端具有用以收容驱动部72的开口38,收容腔33与开口38相连通。在本实施例中,该收容腔33设于头壳32的顶部,收容腔33具有一个呈水平的底壁35及与底壁35相垂直两侧壁37,该底壁 35及两侧壁37共同定义了用以收容扳手70的收容腔33。为了方便扳手70驱动锁紧件58,本发明的实施例扳手70的长度设置较长,具体扳手70握持部71的长度为8-15cm,优选的为15cm,对应的收容腔33的长度也相应增加,收容腔33自前向后延伸至风扇31位置处,由于风扇31处径向尺寸比较大,因此收容腔33在相对风扇31的位置处设有台阶部,用以保证风扇31处有足够的径向尺寸,同时相应的握持部71相对风扇的部分厚度也相应的减小。另外由于锁紧件58延轴向方向不伸入收容腔33内即在轴向方向上,锁紧件58在轴向方向上低于底壁35,因此扳手70在收容于收容腔33内时可以尽量贴着收容腔33的底壁35,使得整个扳手70收容在头壳32时不增加整个机器的径向尺寸,结构更加紧凑,人机效果更好。
开口38自头壳32的前端向后凹陷形成,使得整个扳手70收容至头壳32上时,驱动部72不会向外突出至头壳32外,整体结构更加紧凑并且还可以起到保护驱动部72的效果。
收容腔33的左右两侧壁37还设有导轨371,该导轨371自前向后延伸,扳手70的握持部71的两侧设有与导轨371相配合的导槽711,使得扳手70能够滑动收容于收容腔33内。该底壁35上还固定设置有弹簧片351,弹簧片351用以与扳手70握持部71底部上的缺口(未图示)配合,并用以对扳手70前后方向上限位。当需要取下扳手时,使用者用力向前滑动扳手70使得扳手70的缺口与底壁35上的弹簧片351脱扣,继续向前滑动从而将扳手70完全从收容腔33取下。
当然在其他实施方式中也可以将导轨371设置在收容腔外,具体的可以设置在两侧壁的顶部。
请参考图4至图5,具体描述多功能机10安装工作头36的具体操作方法。图5中,完全取下扳手,将扳手70的驱动部72对准锁紧件58,然后绕着输出轴34的轴线X1驱动该锁紧件58,从而实现工作头的安装及释放。
首先将工作头36安装在输出轴34的法兰盘50与锁定件60之间,并将锁定件60插入至输出轴34的内腔48中。如若工作头36的安装部54上的开口为封闭的,需要将锁紧件58与锁定件60完全脱离开,以将其从输出轴34上取下,再将锁定件60穿过工作头36的开口后安装至输出轴34内。如若工作头的开口加工成非封闭的,留有可穿过锁定件的杆部62的缺口。此种情况无需将锁定件60完全从锁紧件58上拆下,只需拧松锁紧件58,使锁定件58 与输出轴34的承接部之间留出可供工作头的安装部穿过的间隙即可。
将锁定件60插入锁紧件58的螺纹孔66中,使其杆部64的顶端外螺纹与锁紧件58的螺纹孔66接触,并推动锁紧件58轴向移动一定距离,直到锁定件60的压板62抵靠到工作头36的安装部54的下表面,且工作头36的安装部54的上表面抵靠在输出轴34的法兰盘52的下表面。
使用者用力向前推动扳手70的握持部71,使得握持部71内凹槽与弹片脱扣并沿着导轨滑移出收容腔33直至完全从头壳32上取下扳手70。
将扳手70的驱动部72插入锁紧件58对应的凹槽内,转动扳手就可以带动锁紧件58相对锁定件60转动。由于锁紧件58的螺纹孔66与锁定件60的杆部是螺纹配合,在螺纹旋紧力的作用下,锁定件60在转动的同时轴向上移。
继续旋转扳手70,通过驱动部72带动锁定件60进一步上移,并消除工作头36与锁定件60和输出轴34的法兰盘52之间的轴向间隙,直到感觉到操作件68旋转困难,此时工作头36、锁定件58以及法兰盘52三者彼此之间分别具有非常大的轴向正压力,相应具有非常大的摩擦力,从而可传递足够的扭矩以防止工作头36与锁定件60以及输出轴34的法兰盘52之间出现相对滑动,而影响工作效率。
待锁紧件58与锁定件60完全锁紧后,则将扳手重新滑动的收容在收容腔内,此时,扳手70脱开与锁紧件58的配合,进而防止锁紧件58带动扳手70一起摆动。
通过上文对安装工作头36的操作步骤的介绍,很容易理解,进行拆卸工作头36时只需将扳手取下,并将扳手70的驱动部72与锁紧件58配合;然后逆时针旋转扳手,通过驱动部72带动锁紧件58与锁定件60相对转动而松开螺纹连接,使锁定件60轴向下移一定距离;最后,扳手70继续旋转,直到锁紧件58与锁定件60完全脱开螺纹连接,此时可将锁定件60从输出轴34中拆下,然后将工作头36取出。
通过上文描述,本发明的多功能机10通过采用可拆卸的安装在头壳32顶部上的扳手70驱动收容在头壳32内的夹紧单元40,在不采用其它辅助工具的情况下,快速驱动锁紧件58与锁定件60锁紧或脱开,实现工作头36的快速安装或拆卸。由于是通过扳手70旋转若干圈来驱动锁紧件58和锁定件60螺纹锁紧,因此能够保证工作头36受到的轴向正压力足够大,使工作 头36稳定可靠地被安装在输出轴34上,防止工作头36在任何工作环境下出现打滑,提高工作头36的工作效率。
锁紧件58设置于输出轴34远离法兰盘52的一端,即将锁紧件58设置在输出轴34远离工作头36的一端,因此当使用者使用扳手70来驱动锁紧件58时不会碰触到工作头36,避免碰触到工作头,从而防止误伤到操作者。并且扳手70从壳体上拆卸下来后驱动锁紧件58,不需要额外增加零件使得扳手70可枢转得设置在头壳32上,一方面节省了零件另一方面将结构简单化后能够进一步减小头壳的尺寸。如此,本发明的多功能机通过可拆卸安装在头壳上的扳手就能完成工作头的固定及释放,结构简单降低成本并且操作安全。
参照图6所示为本发明另一实施例所示多功能机10的立体图。其结构大致同第一实施方式相同,区别仅在于扳手70可拆卸的收容在头壳的一侧,即将收容腔开设在头壳的侧部,开口则同样设在头壳前端。如此设置,整个摆动机轴向方向的高度能够有效地降低,使得摆动机能够进入一些比较狭小的空间操作,可接近性更好。
参照图7-图14为本发明另一实施例所示的多功能机。其结构大致同前述实施方式多功能机相同,区别在于扳手70的存储位置以及夹紧单元的结构。参照图7所示,具体的扳手70可拆卸地收容在壳体20远离头壳32的一端,优选的多功能机10为直流多功能机,该多功能机10具有用以插接电池包(未图示)的脚掌部21,脚掌部21的顶部开设有沿轴向方向竖直延伸的收容空间211,该收容空间211用以收容扳手70。如此设置,可以避免将扳手设置在头壳,头壳的尺寸相对的可以设计的小一点,使得具有较好的可接近性,方便一些狭小空间内工作。当然将扳手设置在壳体的尾部也可以应用在前述多功能机方案中。优选的,收容扳手70的收容空间211还可以倾斜设置从而增加收容空间的长度,进而能够适当的增大扳手的尺寸,方便用户使用扳手。
参照图8及图12所示夹紧单元包括用于将工作头36固定至输出轴34上的锁定件60以及用于夹紧锁定件60的锁紧件58,锁紧件58位于多功能机10中并被输出轴34支撑。在本实施例中,由于输出轴34是中空的,其内部具有容纳空间48。容纳空间48具有沿纵向相对设置的上表面481和下表面482。锁紧件58即位于该容纳空间48内,并且锁定件60的杆部64也可以插入到容纳空间48内与锁紧件58进行锁紧配合。锁紧件58至少具有两个位置: 锁紧位置和释放位置。在锁紧位置,如图12所示,锁紧件58锁紧锁定件60;在释放位置,如图14所示,锁紧件58松开锁定件60,从而使得锁定件60可以被释放。如图10至图11所示,锁紧件58包括主体581和突出主体581设置的限位部582。限位部582与主体581是一体成型的。主体581在锁紧位置时与锁定件60锁定配接,在释放位置时与锁定件60松开配接。在本实施例中,主体581大致呈平板状。在主体581上设有纵向贯穿设置的开孔583。开孔583的半径大于锁定件60的杆部64的半径,使得杆部64可以穿过该开孔583。开孔583与杆部64之间的配接可实现锁紧件583对锁定件60的锁紧或者释放。具体地,当主体581与杆部64相对垂直时,此时杆部64穿过开孔583并且能够使杆部64的圆周外侧与开孔583的圆周型的内壁584之间存在间隙,则开孔583的内壁584与杆部64脱开抵接。此时的主体581处在释放位置。当主体581与杆部64相对倾斜,此时杆部64穿过开孔583并且杆部64的圆周外侧与开孔583的内壁584相抵接。如图所示,开孔583位于主体581的中央位置。而主体581还具有相对的两侧:第一侧585和第二侧586。限位部582位于主体581的第二侧586的位置。限位部582突出于主体581后沿一方向延伸。因此主体581和限位部582大致构成L型。优选地,限位部582的延伸方向为靠近工作头36的方向。限位部582的作用是提供给主体581限位作用。尤其是对第二侧586起限位作用,从而使得主体581整体相对位置产生改变。在本实施例中,限位部582抵接到输出轴34的下表面482,使得输出轴34对限位部582产生限位作用。该下表面482即构成止挡部。
另外,夹紧单元还具有连接并驱动锁紧件58的驱动件。驱动件位于头壳32内。驱动件可驱动锁紧件58的位置产生改变。具体地,驱动件可操作地使锁紧件58在锁紧位置和释放位置之间切换。驱动件包括了连接锁紧件58的定位件9。定位件9可带动锁紧件58进行纵向移动。在优选的实施例中,定位件9位于输出轴34的容纳空间48内。如图9所示,定位件9包括了定位柱91和连接定位柱91的定位套92。定位柱91和定位套92优选的是一体成型的。定位柱91沿纵向设置。定位套92内部中空并形成一个定位腔体。该定位腔体可以容纳锁紧件58。该定位套92大体是一个由侧壁93构成的环 形腔。该环形腔的径向半径比定位柱91的径向半径稍大,因此定位套92和定位柱91之间形成一个肩部94。在优选的实施例中,该侧壁93并非是封闭设计的,而是具有一个缺口,从而形成大致C字形的结构。锁紧件58正好可以从该缺口装配入定位套92。此外,定位套92还通过侧壁93与锁紧件58形成装配关系,优选地是与锁紧件58的第一侧585形成装配关系。锁紧件58的第一侧585设置有连接驱动件的安装部587。在本实施例中,该安装部587用于与驱动件的定位套92的侧壁93连接。安装部587具有横向延伸的枢接头588。枢接头588具有环形侧面。该环形侧面是光滑的,并该环形侧面是粗细渐变的,即该环形侧面的径向半径是变化的。而定位套92的侧壁93上设置有对应枢接头588的配接部95。在本实施例中,配接部95为容纳枢接头588配接的穿孔。该穿孔与侧壁93的缺口正好位于环形直径的两端,使得锁紧件58从缺口进入定位套92后,其第一侧585的枢接头588正好卡接到侧壁93的穿孔上。
另外,定位套92还具有纵向设置的顶壁96和底部97。其中顶壁96更靠近定位柱91,底部97更远离定位柱91。顶壁96具有一连通定位柱91内部的第一开口961。当锁紧件58装配入定位套92后,第一开口961正好和锁紧件58上的开孔583相对应,使得锁定件60的杆部64可以依次穿过开孔583和第一开口961并部分的进入定位柱91的内部。在顶壁96与锁紧件58之间还设有第一弹性件8。第一弹性件8位于靠近第二侧586的位置。第一弹性件8的作用是纵向偏压主体581的第二侧586。如图9和图10所示,在顶壁96还设有容纳第一弹性件8一端的第一盲孔81,同时在主体581的第二侧586对应的设置有容纳第一弹性件8另一端的第二盲孔82。第一弹性件8即被收纳于第一盲孔81和第二盲孔82之间。在本实施例中,第一弹性件8为柱形的压簧。第一弹性件8的数量为两个,该两个第一弹性件8并排设置,且关于所述第一侧585的安装部587对称。同时,第一盲孔81和第二盲孔82的数量也分别为对应的两个。定位套92的底部97设置有中央开孔的支撑法兰98。支撑法兰98自侧壁93径向向内延伸。而锁紧件58的主体581上则设有可以与支撑法兰98抵接的台阶部589。台阶部589用于对主体581进行限位。而底部97的中央形成开孔是为了给限位部582的纵向延伸留出空间。 限位部582可部分穿过底部97上的开孔从而与其他元件形成配合。当装配完成后,主体581的第二侧586一方面受到第一弹性件8的偏压作用,另一方面主体581的第一侧585受到定位件9的驱动作用可纵向移动。因此结合第一侧585和第二侧586的运动状况,主体581可实现相对杆部64的夹紧位置和释放位置之间的摆动。
如图8所示,驱动件主要包括了用于操作的凸轮件11和与凸轮件11活动配接的压杆12以及第二弹性件13。凸轮件上开设有开口112,该开口112用以与扳手70上的驱动部72配合。在本实施例中,用户从壳体20上取下扳手70,将扳手70插入凸轮件11上的开口内,然后转动扳手70使得凸轮件11围绕一轴线旋转。该轴线是水平设置的,并且和输出轴34的纵向轴线相垂直。转轴14的延伸方向构成该旋转轴线,使得扳手带动凸轮件11可绕转轴14转动。凸轮件11具有容纳转轴14穿过的转轴孔111。凸轮件11具有半径变化的凸轮面轮廓。此外,在本实施例中,在头壳32外还设有用于定位的支架15。支架15上设有孔容纳转轴14穿过。转轴14依次穿过凸轮件11上的转轴孔111以及支架上的孔,从而将凸轮件11和支架15连接起来。支架15以螺栓固定或一体成型等多种方式与头壳32连接。压杆12设置在输出轴34的容纳空间48内。压杆12沿纵向设置并可被驱动地纵向移动。压杆12包括可与凸轮件11配接的第一端122以及与第一端122相对的第二端123。第二端123用于定位件9配接。在本实施例中,压杆12的第二端123上设有外螺纹,而定位件9的定位柱91内设有内螺纹,从而压杆12与定位件9实现螺纹配接。当然压杆12与定位件9还可以采用其他配接形式。压杆12受到第二弹性件13的偏压。在优选的实施例中,压杆12受到的偏压方向是朝向输出轴34的靠近工作头的一端。压杆12还具有位于第一端122和第二端123之间的沿径向外凸设置的径向法兰121。第二弹性件13的一端抵接在该径向法兰121上,从而提供朝向封闭端的偏压力。而定位件9上的肩部94则构成径向外突的凸台。在凸台上还设有垫片99。第二弹性件13的另一端抵接在该垫片99上。垫片99还可以受到输出轴34的卡接而具有限位的作用。而在本实施例中,第二弹性件13可以包括压簧等多种形式的弹性件。压杆12的部分伸出输出轴34并与凸轮件11的凸轮面轮廓可选择地接触。由于凸 轮面轮廓的半径是渐变的,随着凸轮件11随扳手的转动,凸轮面轮廓接触压杆12的位置也是变化的,从而可以克服第二弹性件13的偏压力推动压杆12朝向输出轴34的自由端移动。一旦凸轮件11转动到使凸轮面轮廓脱离接触压杆12,则在偏压力作用下,压杆12沿着输出轴34的轴线沿靠近工作头36的方向移动。
本发明多功能机的快换夹紧装置具体操作过程如下。如图13所示,当锁定件4的杆部64插入到锁紧件58中的开孔583后,当用户从壳体20上取下扳手,然后将扳手70的驱动部72插入驱动件上的凸轮件11上的开口112内,然后将扳手驱动凸轮件11转动至如图13的位置上时,会使压杆12带动定位件9向远离扳手70的方向纵向移动。此时,锁紧件58第二侧586的限位部582与输出轴34的止挡部止挡。
扳手70继续驱动凸轮件11转动至如图14所示的位置,并压迫压杆12进一步纵向下移,进而带动定位件9继续纵向下移;锁紧件58的第二侧586被止挡部止挡,而第一侧585的枢接头588则在定位件9的带动下继续纵向下移,从而锁紧件5整体围绕垂直于输出轴34的纵向轴线的直线旋转至水平位置,并相对于输出轴34的纵向轴线呈垂直位置状态;此时,锁紧件58的开孔583与锁定件4的杆部64之间不相接触,锁定件4处于被释放状态,可以轻松从输出轴34中被取下。
当用户将扳手70驱动凸轮件11旋转回如图12所示的位置上时,凸轮件11脱离接触压杆12。在第二弹性件13的作用下,压杆12带动定位件9纵向上移,并借助锁紧件58的枢接头588与定位套92上的安装部587之间的配接,将锁紧件58的第一侧585也带动上移。同时,由于锁紧件58的第二侧586与定位件9之间设有第一弹性件8,在弹性力的作用下而使锁紧件58的第二侧586为产生上移,这样的最终结果就是锁紧件58恢复至相对于输出轴34的纵向轴线呈倾斜的状态,并进而夹紧锁定件60的杆部64。
使用者将扳手再次旋转至如图14所示的位置上时,压杆12克服第二弹性件13的弹力带动定位件9纵向下移,使锁紧件58恢复至水平状态,卸载掉锁紧件58的开孔583与锁定件4之间产生的侧向夹紧力,使锁定件60可以自由轴向运动,由使用者自行拆卸。
当然本发明也可以不设置凸轮件,即扳手70的驱动部72直接驱动压杆12,扳手沿着输出轴32的轴向方向移动从而驱动压杆12克服第二弹性件13的弹力带动定位件9纵向下移,使锁紧件58恢复至水平状态,卸载掉锁紧件58的开孔583与锁定件4之间产生的侧向夹紧力,使锁定件60可以自由轴向运动,由使用者自行拆卸。
本发明通过在壳体20上设置可分离的扳手70,当用户需要更换多功能机的工作头时只需要取下扳手,然后将扳手去驱动驱动件运动,进一步的驱动件带动锁紧件在锁定锁紧件的锁紧位置和松开锁定件的释放位置之间切换。扳手可拆卸的设置在壳体上能够方便用户使用防止丢失,并且驱动件位于远离工作头的一侧,用户操作扳手时更加安全。在本发明中驱动件和锁紧件是两个单独的零组件,当然也可以设置成一个零组件即一体设置,具体的可以参照本发明第一实施方式中的锁紧件,锁紧件具有六角形凹陷的顶部,该锁紧件的顶部相当于本实施方式中的驱动件,扳手驱动锁紧件的顶部运动从而进一步的带动锁紧件在锁定锁定件的锁定位置和松开锁定件的释放位置之间切换。
本发明不局限于所举的具体实施例结构,基于本发明构思的结构均属于本发明保护范围。
Claims (21)
- 一种多功能机,包括:壳体,包括头壳;输出轴,用于安装工作头,所述输出轴至少部分收容于所述头壳,且定义输出轴的延伸方向为轴向方向,锁定件,用于将所述工作头固定在所述输出轴上,所述锁定件包括可插入所述输出轴内的杆部;锁紧件,用于与所述杆部配合;驱动件,用于驱动所述锁紧件,并使所述锁紧件在锁定所述锁定件的锁紧位置和松开所述锁定件的释放位置之间切换;扳手,可拆卸地安装在所述壳体上;其特征在于:所述扳手能够从所述壳体上分离并用于驱动所述驱动件使得所述驱动件带动所述锁紧件在锁紧位置及释放位置切换。
- 如权利要求1所述的多功能机,其特征在于:所述扳手包括用以供操作者握持的握持部以及用以驱动所述锁紧件的驱动部,所述驱动部与所述锁紧件形配。
- 如权利要求1所述的多功能机,其特征在于:所述杆部具有靠近所述工作头的近端及与近端相对的远端,所述锁紧件用于与所述杆部的远端配合。
- 如权利要求1所述的多功能机,其特征在于:所述扳手围绕平行于轴向方向的轴线转动用以驱动所述锁紧件从而锁紧或释放工作头。
- 如权利要求1所述的多功能机,其特征在于:所述扳手围绕垂直于轴向方向的轴线转动用以驱动所述锁紧件从而锁紧或释放工作头。
- 如权利要求1所述的多功能机,其特征在于:所述扳手沿着轴向方向移动用以驱动所述锁紧件。
- 如权利要求1所述的多功能机,其特征在于:所述扳手可拆卸的收容在所述头壳的顶部。
- 如权利要求7所述的多功能机,其特征在于:所述头壳的顶部设有导轨,所述扳手与所述导轨配合滑动收容于所述头壳。
- 如权利要求1所述的多功能机,其特征在于:所述扳手可拆卸的收容在所述头壳的侧部。
- 如权利要求1所述的多功能机,其特征在于:所述壳体具有用以插接电池包的脚掌部,所述脚掌部的顶部开设有收容空间,所述扳手可拆卸的收容在所述收容空间内。
- 如权利要求7所述的多功能机,其特征在于:所述头壳顶部设有收容所述扳手的收容腔,所述收容腔包括底壁及与底壁相连的两侧壁,所述收容腔还设有台阶部。
- 一种多功能机,其特征在于:所述多功能机包括:壳体,包括头壳;输出轴,用于安装工作头,所述输出轴至少部分收容于所述头壳,且定义输出轴的延伸方向为轴向方向,锁定件,用于将所述工作头固定在所述输出轴上,所述锁定件包括可插入所述输出轴内的杆部,所述杆部具有远离所述工作头的末端;锁紧件,用于与所述末端配合;扳手,用于驱动所述锁紧件围绕平行于轴向方向的轴线转动从而锁紧或释放工作头;所述扳手具有收容在头壳上的第一状态及从头壳上分离的第二状态。
- 如权利要求12所述的多功能机,其特征在于:所述扳手包括用以供操作者握持的握持部以及用以驱动所述锁紧件的驱动部,所述驱动部与所述锁紧件形配。
- 如权利要求13所述的多功能机,其特征在于:所述握持部的长度为8-15cm。
- 如权利要求13所述的多功能机,其特征在于:所述握持部为塑料,所述驱动部为金属。
- 如权利要求13所述的多功能机,其特征在于:所述握持部与所述驱动部之间具有夹角,所述夹角为90—120度。
- 如权利要求12所述的多功能机,其特征在于:所述扳手可拆卸的收容在所述头壳的顶部。
- 如权利要求17所述的多功能机,其特征在于:所述头壳顶部设有收容腔,所述收容腔包括底壁及与底壁相连的两侧壁,所述两侧壁上设有导轨,所述握持部两侧设有与导轨相配合的导槽使得所述扳手能够滑动收容于所述收容腔内。
- 如权利要求18所述的多功能机,其特征在于:所述底壁上设有一突出的弹簧片,所述握持部与所述底壁相接触的一面设有凹槽,所述凹槽与弹簧片相卡持。
- 如权利要求18所述的多功能机,其特征在于:所述锁紧件在轴向方向上低于所述底壁。
- 如权利要求12所述的多功能机,其特征在于:所述扳手可拆卸的收容在所述头壳的一侧。
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US20170080545A1 (en) * | 2012-02-03 | 2017-03-23 | Makita Corporation | Work tool |
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2017
- 2017-12-28 CN CN201721874476.3U patent/CN207840288U/zh active Active
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2018
- 2018-12-28 WO PCT/CN2018/124974 patent/WO2019129218A1/zh active Application Filing
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CN102328305A (zh) * | 2010-07-12 | 2012-01-25 | 苏州宝时得电动工具有限公司 | 动力工具 |
US20170080545A1 (en) * | 2012-02-03 | 2017-03-23 | Makita Corporation | Work tool |
CN104440799A (zh) * | 2013-09-25 | 2015-03-25 | 苏州宝时得电动工具有限公司 | 动力工具 |
US20150183107A1 (en) * | 2013-12-27 | 2015-07-02 | Hitachi Koki Co., Ltd. | Powered working machine |
CN105728846A (zh) * | 2016-04-11 | 2016-07-06 | 浙江金美电动工具有限公司 | 多功能锯快换结构及快换方法 |
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