TWI577474B - Foldable miter saw - Google Patents

Description

Retractable sawing machine

The present invention relates to a processing machine, and more particularly to a retractable sawing machine.

There is a sawing machine (the prior art of the patent application of the Republic of China Publication No. 201325776), comprising a base unit, a processing platform rotatable relative to the base unit, and a sawing unit coupled to one side of the processing platform And a positioning unit. The base unit has a base and two feet respectively fixed on both sides of the base, and the positioning unit has a rotating rod screwed on the processing platform. When the sawing angle of the sawing unit is to be adjusted, the operator must loosen the rotating rod, and use the processing platform to drive the sawing unit to rotate relative to the base unit, and when the sawing unit is turned to the predetermined At the angle, tighten the lever.

In addition, in the case of the Patent Application No. 201420239 of the Republic of China, the use of a fan-shaped plate-like fixing member and a positioning unit can achieve adjustment of a sawing unit of the saw blade relative to a top surface of a saw table. The angle of inclination of the saw blade with respect to the top surface of the saw table is at most 45 degrees for the purpose of tilting the predetermined angle to achieve the machining angle.

Although the current sawing machine has the above two adjustable sawing The operation function of the angle, but when the sawing machine is temporarily not used and needs to be temporarily stored, the overall assembled state is bulky and takes up a large space. In addition, when the sawing machine is manufactured and is intended to be packed and transported, if it is packaged in an assembled state, the volume is increased and the handling cost is increased.

Accordingly, it is an object of the present invention to provide a foldable sawing machine that can be stored in a smaller volume as desired and that can produce a stable fixed position when stored.

Thus, the retractable sawing machine of the present invention comprises a base unit, a saw table, a sawing unit and a supporting unit. The base unit has a front side edge, a rear side edge opposite to the front side edge, a left side edge between the front side edge and the rear side edge, a right side edge opposite to the left side edge, and a front side The rim extends to the bottom surface of the rear side edge and a top surface opposite to the bottom surface, the saw table is mounted on the base unit, and has a working surface opposite to the bottom surface and corresponding to the top surface, and a corresponding a rear side edge and connected to the shaft seat of the working surface, the shaft seat having an axis parallel to the working surface and extending from the rear side edge toward the front side edge, the sawing unit having an axis disposed on the axis of the saw table a rotating member rotatable relative to the base unit and the saw table, a support arm pivotally coupled to the rotating member, a saw blade mounted to the support arm, and a mounting arm mounted to the support arm and configured to drive the a driving device for rotating the saw blade, the rotating member has a pivoting seat for pivoting the supporting arm, and the rotating member can drive the supporting arm to rotate relative to the base unit and the sawing table with the axis as a center of rotation, and Operating the sawing unit from a working state to a folded state, Cutting means in working condition, is formed at least between the blade and the saw station a vertical working angle of 90 degrees to 45 degrees, when the sawing unit is in a folded state, the end surface of the saw blade approaches the working surface, and the supporting unit is fixed to the pivoting seat of the sawing unit and has a fixing a fixed end portion of the pivoting seat and a distal end portion opposite to the fixed end portion, wherein the sawing unit is in a folded state, the end portion corresponds to the left side edge, and forms a top surface with the base unit spacing.

The effect of the invention is that the sawing unit can be rotated relative to the base unit and the saw table, the sawing unit is operated in a folded state and the overall volume of the sawing machine can be reduced, and the sawing unit is in a folded state. When the support unit and the left side edge are combined, a large positioning area can be generated, which is convenient for collection and transportation, and can improve the stable fixed position during collection.

10‧‧‧ base unit

11‧‧‧ front edge

12‧‧‧ rear edge

13‧‧‧ bottom

131‧‧‧ top surface

14‧‧‧left edge

141‧‧‧ convex

15‧‧‧ right edge

16‧‧‧Base

17‧‧‧ feet

18‧‧‧Hands

181‧‧‧ base

182‧‧‧ pivot

183‧‧‧Outside

184‧‧‧ recess

19‧‧‧Handle handle

191‧‧‧ side panels

192‧‧‧ Grip

20‧‧‧Saw table

21‧‧‧Working face

22‧‧‧ shaft seat

221‧‧‧ Positioning parts

23‧‧‧Saw table operation handle

L1‧‧‧ axis

30‧‧‧ sawing unit

31‧‧‧Rotating parts

311‧‧‧ pivoting seat

312‧‧‧ shaft

32‧‧‧Support arm

33‧‧‧Saw blade

34‧‧‧ drive

40‧‧‧Support unit

41‧‧‧Support rod

411‧‧‧Fixed end

412‧‧‧End

413‧‧‧Fixed holes

414‧‧‧Keyhole

42‧‧‧Locking parts

421‧‧‧ bolt

Other features and advantages of the present invention will be apparent from the detailed description of the embodiments of the present invention, wherein: Figure 1 is a perspective view of an operational state, illustrating an implementation of the collapsible sawing machine of the present invention. 2 is a perspective assembled view of the other embodiment of the present invention, illustrating the sawing machine in an operating state; FIG. 3 is a folding schematic view of the above embodiment of the present invention, illustrating that the sawing machine is folded Figure 4 is a schematic view of a collection of the above-mentioned embodiments of the present invention, illustrating that the sawing machine can be stably stood in a folded state; and Figure 5 is a schematic diagram of one of the above embodiments of the present invention, illustrating the saw A hand-held handle of the cutting machine is in a state of use.

Referring to Figures 1 and 2, a first embodiment of the retractable sawing machine of the present invention includes a base unit 10, a saw table 20, a sawing unit 30 and a support unit 40.

The base unit 10 has a front side edge 11, a rear side edge 12 opposite to the front side edge 11, a bottom surface 13 extending from the front side edge 11 to the rear side edge 12, and a top surface opposite to the bottom surface 13 131. A left side edge 14 between the front side edge 11 and the rear side edge 12, and a right side edge 15 opposite the left side edge 14. In terms of structure, the base unit 10 has a disk-shaped base 16, two legs 17 that are radially connected to the sides of the base 16, a pair of handle seats 18 that should be the right edge 15, and a pivotal connection. In the handle 19 of the handle base 18, the front side edge 11 and the rear side edge 12 are respectively formed by the base 16 and the foot bases 17, and the left side edge 14 and the right side edge 15 are respectively formed on the feet. On the outer side of the seat 17, the top surface 131 is formed on the top of the seats 17. In conjunction with FIG. 10, the left side edge 14 has two visors 141 that are adjacent to the bottom surface 13 and are adjacent to the front side edge 11 and the rear side edge 12, respectively. The handle base 18 has a base portion 181 and a pair of pivot blocks 182 spaced apart from the base portion 181. The base portion 181 has a pair of outer side surfaces 183 that should be the right side edge 15 and a recess portion 184 that is recessed by the outer side surface 183. The carrying handle 19 has a pair of side plates 191 pivotally connected to the pivot blocks 182 and a grip 192 connected between the side plates 191. The carrying handle 19 can be stored in a state of being accommodated inside the handle base 18. (as shown in FIG. 2) is operated in a state of use rotated relative to the handle base 18 (as shown in FIG. 5), the handlebar When the hand 19 is in the stowed state, the grip 192 is located in the recess 184, and the grip 192 is located outside the recess 184 when the carry handle 19 is in use.

The saw table 20 is mounted on the base 16 of the base unit 10 and interposed between the bases 17 and rotatable relative to the base unit 10 and has a surface opposite to the bottom surface 13 and corresponding to the top surface A working surface 21 of the 131, a shaft seat 22 corresponding to the rear side edge 12 and connected to the working surface 21, and a saw table operating handle 23 disposed opposite to the shaft seat 22 and extending outwardly, the shaft seat 22 There is an axis L1 parallel to the working surface 21 and extending from the rear side edge 12 toward the front side edge 11, and an operable positioning member 221 for locking the position sawing unit 30.

The sawing unit 30 has a rotating member 31 that is pivotally mounted on the shaft seat 22 of the saw table 20 and rotatable relative to the base unit 10 and the saw table 20, and a support arm 32 pivotally connected to the rotating member 31. A saw blade 33 mounted to the support arm 32 and a driver 34 mounted to the support arm 32 for driving the saw blade 33 to rotate. The rotating member 31 can rotate relative to the base unit 10 and the saw table 20 with the axis L1 as a center of rotation, and has a pivoting seat 311 and a pivoting seat 311 for pivoting the supporting arm 32. The rotating shaft 312, the rotating member 31 can drive the supporting arm 32 to rotate relative to the base unit 10 and the saw table 20 with the axis L1 as a center of rotation, and the sawing unit 30 is operated by a working state (see FIG. 1). And FIG. 2) is operated in a folded state (see FIGS. 3 and 5). When the sawing unit 30 is in operation, the saw blade 33 forms a vertical working angle of 90 degrees to 45 degrees with the saw table 20. When the sawing unit 30 is in the folded state, the end surface of the saw blade 33 approaches the work. Face 21.

The support unit 40 is fixed to the pivoting seat 311 of the sawing unit 30 and has a support rod 41 and a locking member 42. The support rod 41 has a long rod shape and is obliquely fixed to the pivoting seat 311 of the sawing unit 30, and has a fixed end portion 411 fixed to the pivoting seat 311 and an end opposite to the fixed end portion 411. a locking portion 413 corresponding to the fixing end portion 411 and fixed to the rotating shaft 312, a locking hole 414 disposed between the fixing hole 413 and the end portion 412, the locking member 42 has a through hole The locking hole 414 is screwed to the bolt 421 of the pivoting seat 311.

As shown in FIG. 1 and FIG. 2, the sawing unit is completed and located in an operating state. In this state, the driver 34 is suspended above the working surface 21 of the saw table 20, and the workpiece to be cut is placed and positioned. When the working surface 21 is used, the saw blade 33 is pivoted and pivoted downward relative to the rotating member 31 by the support arm 32 of the sawing unit 30 to achieve vertical sawing of the workpiece to be cut. When the operator pulls the saw table operating handle 23 and causes the sawing table 20 to rotate the sawing unit 30 relative to the base unit 10, the sawing unit 30 can be used to obliquely cut the workpiece to be cut. machining. When the operator operates to release the positioning member 221, the rotating member 31 can drive the supporting arm 32 and the saw blade 33 to rotate relative to the sawing table 20 by a predetermined angle with the axis L1 as a center of rotation, that is, FIG. As shown in FIG. 2, if the support arm 32 and the saw blade 33 are rotated to the left or right with the axis L1 as the center of rotation, so that the saw blade 33 forms a predetermined working angle with the working surface 21, the tilt saw can be achieved. Cut the object to be cut (not shown).

When the sawing machine is temporarily not used and is intended for collection or packaging The operator can first operate the saw table 20 and the saw unit 30 with respect to the base unit 10 to rotate counterclockwise by 45 degrees. Then, the operator operates to release the positioning member 221, and the rotating member 31 is rotatable relative to the shaft seat 22. The rotating member 31 can drive the sawing unit 30 as a whole with respect to the axis L1 as a center of rotation. The saw table 20 is rotated until the end surface of the saw blade 33 approaches the work surface 21 and is substantially parallel to the work surface 21, so that the saw unit 30 can be operated in a folded state.

As shown in FIG. 3, when the sawing unit 30 is in the folded state, the end portion 412 corresponds to the left edge 14, forming a distance from the top surface 131 of the base unit 10, and the support rod 41 is fixed by the fixing. The end portion 411 gradually moves away from the top surface 131 of the base unit 10 as it extends toward the end portion 412.

As shown in FIG. 4, when the sawing unit 30 is operated in a folded state, the convex 141 of the left edge 14 and the distal end portion 412 of the support rod 41 form a positioning plane P, which can The sawing machine is placed upright on the ground, and the setting of the supporting unit 40 can increase the bottom area when the sawing machine is placed upright, and can ensure that the sawing machine can be stably fixed when being stored, and the sawing machine can be stored in the The narrow space is conducive to the use of space.

As shown in FIG. 5, the sawing machine of the present invention can also utilize the setting of the carrying handle 19 to facilitate the carrying and moving. When the carrying handle 19 is used, the portable handle 19 is operated in a stored state (shown in FIG. 3) accommodated inside the handle base 18 so as to be rotated relative to the handle base 18, and the operator can perform the operation. Carrying.

In summary, the sawing machine of the present invention can be operated in a timely manner. The state is used for sawing processing, and can also be easily operated into a folded state, which can greatly reduce the volume, which is not only convenient for collecting and handling, but also can reduce the packaging volume and reduce the transportation cost. In the folded state, the setting of the supporting unit 40 can be utilized, the effect of the stable fixing position can be generated, and the setting of the carrying handle 19 can also be carried out and moved, and 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 present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification of the present invention are still It is within the scope of the patent of the present invention.

10‧‧‧ base unit

11‧‧‧ front edge

12‧‧‧ rear edge

13‧‧‧ bottom

131‧‧‧ top surface

14‧‧‧left edge

141‧‧‧ convex

15‧‧‧ right edge

16‧‧‧Base

17‧‧‧ feet

18‧‧‧Hands

19‧‧‧Handle handle

20‧‧‧Saw table

21‧‧‧Working face

22‧‧‧ shaft seat

221‧‧‧ Positioning parts

23‧‧‧Saw table operation handle

L1‧‧‧ axis

30‧‧‧ sawing unit

31‧‧‧Rotating parts

311‧‧‧ pivoting seat

312‧‧‧ shaft

32‧‧‧Support arm

33‧‧‧Saw blade

40‧‧‧Support unit

41‧‧‧Support rod

411‧‧‧Fixed end

412‧‧‧End

413‧‧‧Fixed holes

414‧‧‧Keyhole

42‧‧‧Locking parts

421‧‧‧ bolt

Claims (6)

A retractable sawing machine comprising: a base unit having a front side edge, a rear side edge opposite the front side edge, a left side edge between the front side edge and the rear side edge, and a reverse a right side edge of the left side edge, a bottom surface extending from the front side edge to the rear side edge and a top surface opposite to the bottom surface; a sawing platform mounted to the base unit and having a surface opposite to the bottom surface Corresponding to the working surface of the top surface and a shaft seat corresponding to the rear side edge and connected to the working surface, the shaft seat has an axis parallel to the working surface and extending from the rear side edge toward the front side edge; a sawing unit having a shaft disposed on the shaft seat of the saw table and rotatable relative to the base unit and the saw table, a support arm pivotally coupled to the rotating member, and a support arm mounted to the support arm a saw blade and a driver mounted on the support arm for driving the rotation of the saw blade, the rotating member has a pivoting seat for pivoting the support arm, and the rotating member can drive the support arm to rotate with the axis The center rotates relative to the base unit and the saw table, and the sawing unit is The working state is operated in a folded state, and at least the working angle of the saw blade and the sawing table is perpendicularly formed between 90 degrees and 45 degrees when the sawing unit is in the working state, and the sawing unit is in the folded state An end surface of the sheet is adjacent to the working surface; and a supporting unit fixed to the pivoting seat of the sawing unit and having a fixed end fixed to the pivoting seat and a distal end opposite to the fixed end When the sawing unit is in the folded state, the end portion corresponds to the left side edge and forms a distance from the top surface of the base unit. The retractable sawing machine of claim 1, wherein the supporting unit has a long rod shape and is obliquely fixed to a pivoting seat of the sawing unit, and the supporting unit is in a folded state. When the fixed end portion extends toward the end portion, it gradually moves away from the top surface of the base unit. The retractable sawing machine of claim 2, wherein the rotating member of the sawing unit further has a rotating shaft disposed on the pivoting seat and pivoting the supporting arm, the supporting unit further having a shaft a support rod and a locking member, the fixed end portion and the end portion are disposed on the support rod, the support rod further has a fixing hole corresponding to the fixed end portion and fixed to the rotating shaft, and the fixing rod is disposed on the fixing hole and the fixing hole a locking hole between the end portions, the locking member having a bolt passing through the locking hole and screwed to the pivoting seat. The retractable sawing machine of claim 1, wherein the left side edge of the base unit has two protrusions that are adjacent to the bottom surface and adjacent to the front side edge and the rear side edge, respectively. The granules together with the end portions of the support unit form a positioning plane. The retractable sawing machine according to any one of claims 1 to 4, wherein the base unit further has a pair of handle seats on the right side edge and a carrying handle pivotally connected to the handle base The carrying handle can be operated in a state of being stored in the interior of the handle base to be rotated out of the handle seat. The retractable sawing machine of claim 5, wherein the handle base of the base unit has a base and a pair of spaced apart pivot blocks connected to the base, the base having a pair of right side edges An outer side surface and a recess recessed by the outer side surface, the carrying handle having a pair of pivots connected to the isometric The side plate of the block and a grip bar connected between the side plates, the grip bar is located in the recess when the carry handle is in the storage state, and the grip bar is located outside the recess when the carry handle is in use.