TWI586494B - Foldable miter saw having a safety device and folding method thereof - Google Patents

Description

Retractable sawing machine with safety device and safety folding method for foldable sawing machine

The invention relates to a foldable sawing machine, in particular to a folding and cutting machine with a safety device and a safety folding method for a foldable sawing machine.

In order to enable multi-angle sawing, the existing sawing machine is often designed to adjust a sawing unit to rotate at a sawing angle with respect to a machine seat, and after fixing the sawing angle, usually a fixed hand is used. The screw is locked to ensure that the sawing angle of the sawing unit relative to the base can be stabilized.

When the sawing machine is transported in a box, in order to effectively utilize the space, the sawing unit is further adjusted to a folding angle nearly parallel to the base to facilitate the box transportation.

However, the mechanism for adjusting the sawing angle of the sawing unit and adjusting the sawing unit to the folding angle tends to use the same mechanism, thus causing the user to forget when adjusting the sawing unit to the folding angle When the power is turned off so that the sawing unit still maintains power, accidents may occur if the operation is inadvertently triggered.

Accordingly, it is an object of the present invention to provide a safe folding method for a foldable sawing machine having a safety device and a foldable sawing machine.

Accordingly, the present invention has a retractable sawing machine with a safety device, comprising a base, a saw table, a sawing unit, and a safety device.

The saw table includes a working platform rotatable relative to the base, and a shaft seat disposed on the working platform, the working platform having an upward working surface, the shaft seat having an axis parallel to the working surface The sawing unit includes a rotating member rotatably disposed about the axis, a supporting arm disposed on the rotating member, a saw blade mounted on the supporting arm, and a mounting arm mounted on the supporting arm for driving a driver for rotating the saw blade, and a plug electrically connected to the driver, the safety device comprising a limiting plate disposed on the axle seat, and a movable portion disposed opposite to the limiting plate in a direction parallel to the axis a safety rod of the rotating member, the limiting plate has a working slot and a folding hole, the safety rod is movable between a clamping position and a non-carding position, and the safety rod is worn in the clamping position One of the working slot and the folding hole is in the non-carding position, the safety bar is disengaged from the limiting plate.

Therefore, the safe folding method of the foldable sawing machine of the present invention is to first prepare a foldable sawing machine, the sawing machine comprising a machine base, a sawing platform disposed on the machine base, and a relative a sawing unit for rotating the saw table, and a safety rod, the sawing unit is rotatable between a rotatable working position and a non-rotatable folding position, the safety rod can be in a clamping position and a non-carding Moving between the positions, the sawing unit is restricted by the safety rod and cannot rotate between the working position and the folding position. In the non-carding position, the sawing unit is not affected by the The safety rod is restricted to rotate between the working position and the folding position, and then a plug of the sawing unit is inserted into the safety rod in a direct manner or through an indirect connection of a joint, and the safety is rotated The rod is moved to the non-sticking position and the sawing unit is driven to rotate from the working position to the folded position, and finally the plug is used to move the safety rod to the engaged position.

The utility model has the advantages that the sawing unit does not have electric power when the safety rod is operated by moving the safety rod to the clamping position and the non-carding position, thereby ensuring safe use.

Referring to Figures 1, 2, and 3, an embodiment of a foldable sawing machine having a safety device of the present invention includes a base 2, a saw table 3, a sawing unit 4, and a safety device 5.

The saw table 3 is disposed on the base 2 and includes a working platform 31 rotatable relative to the base 2 and a shaft seat 32 disposed on the working platform 31.

The work platform 31 has an upwardly facing working surface 311 having an axis L parallel to the working surface 311.

The sawing unit 4 is rotatable relative to the saw table 3, and includes a rotating member 41 rotatably disposed about the axis L, a supporting arm 42 disposed on the rotating member 41, and a support member mounted thereon. A saw blade 43 of the arm 42, a driver 44 mounted to the support arm 42 for driving the saw blade 43 to rotate, and a plug 45 electrically connected to the driver 44.

Referring to Figures 3, 4, and 5, the rotating member 41 has a front side 411, a rear side 412 opposite the front side 411, a front hole 413 at the front side 411, and a rear side 412 connected to the front side. A rear aperture 414 of the aperture 413 and a surrounding wall 415 defining the front aperture 413.

The surrounding wall 415 has a convex portion 416 located in the rear hole 414 and extending toward the rear side surface 412, a concave portion 417 located on the same side of the convex portion 416 and relatively away from the rear side surface 412, and an inwardly extending portion Extension 418. In the present embodiment, the concave portion 417 surrounding the wall 415 and the convex portion 416 together form a slope.

The safety device 5 includes a limiting plate 51 disposed on the front side surface 411 of the rotating member 41, and a rotation plate 51 disposed adjacent to the limiting plate 51 in a direction parallel to the axis L. The safety rod 52 of the member 41 and a spring member 53 disposed on the safety rod 52.

The limiting plate 51 has a working slot 511 and a folding hole 512.

The safety rod 52 has an operation hole 521 for inserting the plug 45 in a direct manner or through an indirect connection (not shown), and a head portion 522 disposed on the rear hole 414 of the rotating member 41. And a rod segment 525 that connects the head section 522 and extends to the front hole 413 of the rotating member 41. In this embodiment, the hole position and the number of the operation holes 521 correspond to the pins of the plug 45. However, in other implementations, the plug 45 can also be connected to the adapter. The operation hole 521 The hole position and number correspond to the pins of the adapter.

The head section 522 has a convex portion 523 extending toward the front side surface 411 of the rotating member 41, and a concave portion 524 located on the same side of the convex portion 523 and away from the front side surface 411. In the present embodiment, the convex portion 523 of the head section 522 of the safety rod 52 and the concave portion 524 together form a slope.

The operation hole 521 is located on a side of the head section 522 opposite to the convex portion 523.

The rod segment 525 has a small diameter portion 526 adjacent to the head portion 522 and extending through the extending portion 418 of the surrounding wall 415, and a large diameter portion 527 away from the head portion 522.

The spring members 53 are respectively abutted between the large diameter portion 527 of the safety rod 52 and the extending portion 418 of the rotating member 41 to urge the safety rod 52 to move toward the limiting plate 51.

Referring to Figures 4, 5 and 6, the safety bar 52 is movable between a carded position and a non-carded position by operation of the plug 45.

When the safety rod 52 is in the clamping position (see FIG. 5), the head section 522 of the safety rod 52 abuts against the surrounding wall 415 of the rotating member 41, and the safety rod 52 is rotated to the convex portion 523 of the head section 522. Along the convex portion 416 of the surrounding wall 415, the convex portion 523 of the head portion 522 abuts against the concave portion 417 of the surrounding wall 415, the convex portion 416 of the surrounding wall 415 abuts against the concave portion 524 of the head portion 522, the safety rod 52 The rod segment 525 penetrates into one of the working groove 511 of the limiting plate 51 and the folding hole 512.

When the safety rod 52 is in the non-carding position (see FIG. 6), the head section 522 of the safety rod 52 abuts against the surrounding wall 415 of the rotating member 41, and the safety rod 52 is rotated to the convex portion 523 of the head section 522. The protrusion 416 of the surrounding wall 415 is abutted so that the rod segment 525 of the safety rod 52 is disengaged from the limiting plate 51 and retracted into the front hole 413.

2, 3, and 7, in use, the sawing unit 4 can be rotated between the rotatable working position and the non-rotatable folding position relative to the shaft seat 32 of the saw table 3 through the rotating member 41. And fixing the angle of rotation of the sawing unit 4 by a screw lock of the fixed handle 6.

Referring to Figures 2, 4 and 5, the sawing unit 4 can still adjust the rotation angle in the working position. During the rotation, the safety rod 52 is opposite to the limit along with the rotation of the sawing unit 4. The plate 51 is rotated, and the safety rod 52 is located at the clamping position. At this time, the sawing unit 4 is restricted by the safety rod 52 and cannot rotate between the working position and the folding position. The rod of the safety rod 52 The segment 525 is inserted into the working groove 511 of the limiting plate 51. Therefore, the rotation angle of the sawing unit 4 is determined by the movable range of the safety rod 52 in the working groove 511 of the limiting plate 51. In the present embodiment, the angle of rotation of the sawing unit 4 is viewed from a rear view and can be rotated by a 45 degree angle in a clockwise direction and a 22.5 degree angle in a counterclockwise direction with reference to an upwardly erect angle.

Referring to Figures 6, 7, and 8, when the sawing unit 4 is to be folded and the sawing unit 4 is rotated to the folding position, it is a safe folding method through a foldable sawing machine. Firstly, the plug 45 is inserted into the operating hole 521 in a direct manner or through an indirect manner of the adapter, so that the safety rod 52 can be rotated to the non-carding position, and the sawing unit 4 is The plug 45 does not receive power and is no longer in operation, and the sawing unit 4 is rotatable between the working position and the folding position without being restricted by the safety rod 52, and then the fixing handle 6 is released to rotate. The sawing unit 4 is brought close to the folding position parallel to the saw table 3, at which time the rod segment 525 of the safety rod 52 is moved to the corresponding folding hole 512, and then the safety rod 52 is replaced by the plug 45. After being rotated to the clamping position, the rod segment 525 of the safety rod 52 penetrates into the folding hole 512 of the limiting plate 51, so that the sawing unit 4 can be fixed at the folding position. In this embodiment, the folding position of the sawing unit 4 is viewed from a rear view and is based on an upwardly erect angle. Rotated 80 degrees clockwise.

In summary, the sawing unit 4 does not have power when operating the safety rod 52 by driving the safety rod 52 through the plug 45 to move the locking position and the non-carding position. It is ensured that the use is safe, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

2‧‧‧ machine base
3‧‧‧Saw table
31‧‧‧Working platform
311‧‧‧Working face
32‧‧‧ shaft seat
4‧‧‧ sawing unit
41‧‧‧Rotating parts
411‧‧‧ front side
412‧‧‧ rear side
413‧‧‧ front hole
414‧‧‧ rear hole
415‧‧‧round the wall
416‧‧‧ convex
417‧‧‧ recess
418‧‧‧Extension
42‧‧‧Support arm
43‧‧‧Saw blade
44‧‧‧ drive
45‧‧‧ plug
5‧‧‧Safety device
51‧‧‧Limited board
511‧‧‧Working trough
512‧‧‧ folding hole
52‧‧‧Safety rod
521‧‧‧Operation hole
522‧‧‧ head
523‧‧‧ convex
524‧‧‧ recess
525‧‧‧ rod segment
526‧‧‧Little Trails Department
527‧‧‧The Great Trails Department
53‧‧‧Spring parts
6‧‧‧Fixed handlebars
L‧‧‧ axis

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a perspective view of an embodiment of the collapsible sawing machine of the present invention having a security device; The rear view of the embodiment shows a sawing unit in a working position; FIG. 3 is a partial exploded perspective view of the embodiment; FIG. 4 is a schematic view of the use of the sawing unit in the working position. Figure 5 is a partial cross-sectional view taken along line VV of Figure 2, illustrating a safety bar in a latched position; Figure 6 is a view similar to Figure 5 illustrating the safety bar in a non-stick position; Figure 7 Is a view similar to that of FIG. 2, illustrating that the sawing unit is in a collapsed position; and FIG. 8 is a view similar to FIG. 4, illustrating the sawing unit is in the collapsed position.

41‧‧‧Rotating parts

411‧‧‧ front side

412‧‧‧ rear side

413‧‧‧ front hole

414‧‧‧ rear hole

415‧‧‧round the wall

416‧‧‧ convex

417‧‧‧ recess

418‧‧‧Extension

45‧‧‧ plug

51‧‧‧Limited board

52‧‧‧Safety rod

521‧‧‧Operation hole

522‧‧‧ head

523‧‧‧ convex

524‧‧‧ recess

525‧‧‧ rod segment

526‧‧‧Little Trails Department

527‧‧‧The Great Trails Department

53‧‧‧Spring parts

Claims (7)

A retractable sawing machine with a safety device comprises: a machine base; a saw table comprising a working platform rotatable relative to the machine base, and a shaft seat disposed on the working platform, the working platform having a working platform An upwardly facing working surface, the axle seat having an axis parallel to the working surface; a sawing unit comprising a rotating member rotatably disposed about the axis, a support arm disposed on the rotating member, a saw blade mounted to the support arm, a driver mounted to the support arm for driving the saw blade to rotate, and a plug electrically connecting the driver; and a safety device including a limit disposed on the axle seat a safety plate disposed on the rotating member relative to the limiting plate in a direction parallel to the axis, the limiting plate has a working slot and a folding hole, the safety bar has a plug for the plug The operation hole inserted in a direct manner or through an indirect connection of a connector, the safety bar can be moved between a clamping position and a non-carding position by the operation of the plug, in the clamping position, The safety rod penetrates into the working slot The folding one hole wherein, when in the non-clamping position in which the safety lever from the stopper plate. A retractable sawing machine with a safety device according to claim 1, wherein the rotating member has a front side adjacent to the limiting plate, a rear side opposite the front side, and a front side a front hole, a rear hole at the rear side and communicating with the front hole, and a surrounding wall defining the front hole, the surrounding wall having a convex portion located in the rear hole and extending toward the rear side, the convex portion The safety bar further has a head section disposed on the rear hole, and a connecting the head section a rod segment extending to the front hole, the head portion having a convex portion extending toward the front side, the operation hole being located at a side of the head portion opposite to the convex portion, the safety rod being in the clamping position, the safety a head section of the rod abuts against a surrounding wall of the rotating member, the safety rod is rotated to a convex portion of the head section away from the convex portion of the surrounding wall, the rod section of the safety rod penetrates into the working slot of the limiting plate and One of the folding holes, when the safety rod is in the non-clamping position, the head portion of the safety rod abuts against the surrounding wall of the rotating member, and the safety rod is rotated to abut the convex portion of the head portion The protrusion of the wall is such that the rod segment of the safety rod is disengaged from the limiting plate and retracted into the front hole. A retractable sawing machine having a safety device according to claim 2, wherein the safety device further comprises a spring member disposed on the safety rod to urge the safety rod to move toward the limiting plate. The retractable sawing machine with a safety device according to claim 3, wherein the rod segment of the safety rod has a small diameter portion adjacent to the head portion, and a large diameter portion away from the head portion, The surrounding wall of the rotating member further has an extending portion extending inwardly for the small diameter portion to penetrate, the spring member respectively abutting between the large diameter portion of the safety rod and the extending portion of the rotating member. A retractable sawing machine with a safety device according to claim 2, wherein the surrounding wall of the rotating member further has a recess on the same side of the corresponding convex portion and relatively away from the rear side, the safety rod The head section further has a recess on the same side of the corresponding convex portion and away from the front side. When the safety rod is in the clamping position, the head section of the safety rod abuts the surrounding wall of the rotating part, the safety The rod is rotated to a convex portion of the head section away from the surrounding wall a portion of the head segment abutting the recess of the surrounding wall, the convex portion of the surrounding wall abutting the recess of the head segment. The retractable sawing machine with a safety device according to claim 5, wherein the concave portion surrounding the wall of the rotating member and the convex portion together form a slope, the concave portion of the head portion of the safety rod and the convex portion Together form a slope. A safety folding method for a foldable sawing machine, comprising the following steps: (A) preparing a foldable sawing machine, the sawing machine comprising a machine base, a saw table disposed on the machine base, and a a sawing unit that rotates relative to the saw table, and a safety bar that is rotatable between a rotatable working position and a non-rotatable folding position, the safety bar being movable in a clamping position and a non-rotating position Moving between the clamping positions, the sawing unit is restricted by the safety bar and cannot be between the working position and the folding position. Rotating, in the non-sticking position, the sawing unit is rotatable between the working position and the folding position without being restricted by the safety rod; (B) directly or through a plug of the sawing unit An indirect manner of the adapter is inserted into the safety rod and rotated to move the safety rod to the non-sticking position; (C) driving the sawing unit to rotate from the working position to the folding position; and (D) The plug drives the safety bar to the clamped position.