TWI471191B - Folding tool stand - Google Patents

Description

Support frame for supporting machine tools

The present invention relates to a support frame for supporting a power tool, and more particularly to a support frame that provides easy handling and deployment.

The Republic of China Announcement No. M273664 discloses a machine-retractable support frame that mainly includes a support table and a plurality of support legs pivotable relative to the support table. When unfolded, the support legs are fixed by a plurality of first fixing members, and when the folding is performed, the support legs are fixed by a plurality of second fixing members.

However, when the support frame of this patent is folded, the support legs are hinged to the bottom side of the support table, so that the support frame is placed on the ground. If the user wants to unfold the support frame, the waist must be bent very low or the whole person must be pulled down to unfasten the second fixing members to pivot the support feet. However, the upper part of the support table is often connected to a relatively heavy machine (such as a table saw machine). Therefore, during the process of folding and unfolding the support frame, the user is easily injured by improper application of the body.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a support frame for supporting a power tool that provides an easy-to-operate folding manner to effectively prevent the user's body from being injured during the folding and unfolding of the support frame.

To achieve the above object, the support frame of the present invention comprises a load platform, a base frame, a support member and a pair of links. The carrying platform has a first side and a second side opposite to the first side; the base frame is pivotally connected to the first side of the carrying platform; the supporting member is pivotally connected to the base frame by a top end thereof; The connecting rods are respectively pivotally connected at their two ends to the second side of the carrying platform and the base frame.

When the first side of the carrying platform slides along the base frame to a first position, the two ends of the connecting rods can be pivoted so that the second side of the carrying platform is close to the base frame, and then And then pivoting the support member toward the base frame to be positioned close to the base frame to complete the folding; when the support member is pivotally positioned away from the base frame, then the first side of the carrying platform is further allowed When sliding along the base frame to a second position, the two ends of the connecting rods can be pivoted to move the second side of the carrying platform away from the base frame to complete the unfolding.

Thereby, the support frame of the present invention can complete the folding and unfolding operation without excessive bending of the user, and can effectively prevent the user from injuring the body during the process of folding and unfolding the support frame.

The following preferred embodiments are listed in conjunction with the drawings to illustrate the structure and function of the invention.

Please refer to the first figure, which is a support frame (10) according to a first preferred embodiment of the present invention. The support frame (10) comprises a carrying platform (20), a base frame (30), a support member (40), a pair of elastic members (50) and a pair of links (60).

The upper part of the carrying platform (20) can be connected to a machine tool (not shown), and the machine tool can be a table saw machine, a diagonal saw machine, a wire saw machine, a band saw machine, a drilling machine, a sander, etc. One. The carrying platform (20) has a first side edge (22), a second side edge (24), a third side edge (26) and a fourth side edge (28), wherein the first side edge (22) Each of the left and right ends of the second side (24) has a pivoting portion (221, 241), and the pivoting portion (221) of the first side (22) is pivotally provided with a fixing member (223). The member (223) has a pulling end (223a), a return spring (223b) and an abutting end (223c) having an arcuate surface, as shown in the second and third figures.

The base frame (30) has two support rods (32, 34), and the top ends of the support rods (32, 34) are pivoted on the first side (22) of the carrying platform (20) by a sliding sleeve (36) a pivoting portion (221), and the top ends of the support rods (32, 34) extend upwardly and are connected to each other to form a grip portion (302) that can be gripped by a user; each support rod (32, 34) The bottom end pivotally has a roller (38) abutting against the ground, and the bottom ends of the support rods (32, 34) are bent and connected to each other to form a support portion (304) which can be supported on the ground. In addition, a top end of one of the support rods (32) has a first convex portion (322) protruding toward the inner and outer sides, and can be abutted against the abutting end (223c) of the fixing member (223). As shown in the third figure, a support member (342) is disposed at a position near the bottom end of the other support rod (34) of the base frame (30); the position of the support rods (32, 34) near the bottom end is provided by a The first crossbars (306) are connected to each other to increase the structural strength of the base frame (30), and each of the support bars (32, 34) is provided with a spacer (35) at a position near the bottom end. In addition, the middle portion of each of the support rods (32, 34) has a second pivoting portion (324, 344) and a first pivoting portion (326, 346), wherein each of the first pivoting portions (326, 346) has A recess (37), and each recess (37) has a first end (372) and a second end (374), as shown in the fourth and fifth figures.

The support member (40) has a pair of legs (40a, 40b), and the top ends of the legs (40a, 40b) are pivotally disposed on the first pivoting portions (326, 346) of the respective support bars (32, 34). The base frame (30) forms a cross configuration with the bottom ends of the legs (40a, 40b) resting against the ground. A screw is formed at a top end of each of the legs (40a, 40b) to form an outwardly projecting second protrusion (42) for abutting against the first pivoting portion of each of the support rods (32, 34) (326, 346) a second end (374) of the recess (37) such that the legs (40a, 40b) are positioned in an unfolded state, as shown in the second and fourth figures; when the legs (40a, The second protrusion (42) of 40b) pivots toward the base frame (30) with the legs (40a, 40b) to abut the base frame (30) and abuts against the support bars (32, 34) When the first end (372) of the recess (37) of the pivoting portion (326, 346) is engaged, one of the legs (40b) can be engaged by the engaging member (342) of the base frame (30) for Positioned in a collapsed state; in addition, the legs (40a, 40b) are connected to each other at a position near the bottom end by a second crossbar (44) to increase the structure of the legs (40a, 40b) strength.

The elastic members (50) are respectively sleeved on the support rods (32, 34) of the base frame (30), and the two ends thereof respectively abut against the sliding sleeves (36) and the respective support rods (32, 34). a pivotal portion (326, 346).

The two ends of each connecting rod (60) are respectively pivotally connected to the pivoting portion (241) of the second side (24) of the carrying platform (20) and the second pivoting portion of each of the supporting rods (32, 34) (324, 344).

When the user wants to fold the support frame (10), first press the trigger end (223a) of the fixing member (223) to disengage the abutting end (223c) of the fixing member (223) from the support rod (32). a projection (322), which is then pressed against the second side (24) of the carrier platform (20), forcing the ends of the links (60) to pivot and can be supported by the respective support bars (32, 34) The spacer (35) serves as a buffer for the connecting rods (60) to be depressed, and at the same time, the first side (22) of the carrying platform (20) will follow the support rods of the base frame (30) (32, 34). Moving down to a first position and compressing the elastic members (50) through the sliding sleeves (36), the elastic members (50) will provide an impedance force to make the carrying platform (20) smooth The height is lowered until the second side (24) of the carrying platform (20) is close to the base frame (30). At this time, the center of gravity of the carrying platform (20) and the machine tool connected thereto is also moved downward. As shown in the fourth figure, it helps the support frame (10) to move smoothly and stand upright. The legs (40a, 40b) are then forced to pivot toward the base frame (30) until the legs (40b) are caught by the engaging members (342) and cannot pivot relative to the base frame (30), as in the first As shown in the fifth figure, the user can hold the grip portion (302) and roll the support frame (10) forward by the rolling of the rollers (38), or by the support portion ( 304) and the support frame (10) is erected on the ground.

When the user wants to unfold the support frame (10), first pull the second crossbar (44), and the leg (40b) is disengaged from the engaging member (342) and pivoted away from the base frame (30) until The second protrusion (42) of each leg (40a, 40b) abuts against the second end (374) of the recess (37) of the first pivoting portion (326, 346) of each of the support bars (32, 34) ) to complete the positioning of the legs (40a, 40b) as shown in the fourth figure. Then, the second side (24) of the carrying platform (20) is pulled, and the elastic members (50) will provide elastic force to push the sliding sleeves (36), so that the user can easily carry the carrying platform (20). Pulling up so that the first side edge (22) of the carrying platform (20) can slide up along the support bars (32, 34) of the base frame (30) to a second position when the carrying platform (20) When the first side edge (22) is slid to the second position, the sliding sleeve (36) will abut the first convex portion (322) of the supporting rod (32), and at the same time, the two ends of the connecting rod (60) Will be driven by the carrying platform (20) to pivot until the second side (24) of the carrying platform (20) is lifted by the connecting rod (60) by a predetermined height away from the base frame (30), such as As shown in the first and second figures, the abutting end (223c) of the final fixing member (223) will abut against the first convex portion (322) of the support rod (32), so that the bearing platform (20) is fixed and no longer slips. That is, the deployment of the support frame (10) is completed.

Please refer to the sixth and seventh figures again for the support frame (70) of the second preferred embodiment of the present invention. The support frame (70) of this embodiment omits the design of the elastic member and includes a driving member (90).

The drive member (90) has a step (92) and two side bars (94). The side bars (94) are respectively pivotally connected to the second pivoting portion (768) of the support rod (762) of the base frame (76) and are pivotally connected to the connecting rods (80), respectively, and have bottom ends thereof Connecting the two ends of the stepping bar (92), and connecting the top ends thereof to the connecting rods (80), the distance from the top end to the second pivoting portion (768) is approximately from the bottom end thereof to the second pivoting connection One-fifth to one-third of the distance of the department (768).

When the user wants to fold the support frame (70), the pedal (92) is first stepped on one foot to provide a supporting force to the second side of the carrying platform (72) through the connecting rods (80) ( 724), and then the engagement state between the fixing member (74) and the first convex portion (766) of the support rod (762) is released. In this way, the force applied to the pedal (92) can be slowly released, so that the first side (722) of the carrying platform (72) slides down along the support rod (762) of the base frame (76). Move to the first position and bring the second side (724) of the carrier platform (72) close to the base frame (76) as shown in the eighth figure. Finally, the legs (78) are forced to be caught by the engaging members (764) and cannot be pivoted relative to the base frame (76), as shown in the ninth figure, to complete the folding.

When the user wants to unfold the support frame (70), first release the engagement state between the legs (78) and the engaging member (764), as shown in the eighth figure, and then apply the force to step on the pedal (92), the links (80) will be driven by the side bars (94) to force pivoting of the ends thereof to push the second side (724) of the carrying platform (72) away from the frame (76) while the second side (724) of the carrying platform (72) is raised to the predetermined height, while the first side (722) of the carrying platform (72) will follow the support bar of the base frame (76) (762) Slide up to the second position. Finally, the fixing member (74) is engaged with the first convex portion (766) of the support rod (762), so that the bearing platform (72) is fixed and no longer slips, that is, the deployment is completed.

Thereby, the support frame of the invention not only has a good supporting effect, but also the support frame of the invention is not close to the ground after folding, so that the user can easily complete the folding and unfolding without excessive bending. Support frame to avoid damage to the user's body.

The above is only the detailed description and illustration of the preferred embodiments of the present invention, and the embodiments of the present invention and the similar variations thereof are included in the scope of the present invention, and any familiar with the Those skilled in the art, within the scope of the present invention, may readily appreciate variations or modifications that are encompassed by the scope of the patents herein below.

"First Embodiment"

(10). . . Support frame

(20). . . Carrier platform

(twenty two). . . First side

(twenty four). . . Second side

(221,241). . . Pivot

(223). . . Fastener

(223a). . . Trigger end

(223b). . . Return spring

(223c). . . Abutting end

(26). . . Third side

(28). . . Fourth side

(30). . . Base frame

(302). . . Grip

(304). . . Support

(306). . . First crossbar

(32,34). . . Support rod

(322). . . First convex

(342). . . Clip

(324,344). . . Second pivot

(326,346). . . First pivot

(35). . . Pad

(36). . . Sleeve

(37). . . Concave

(372). . . First end

(374). . . Second end

(38). . . Wheel

(40). . . supporting item

(40a, 40b). . . Feet

(42). . . Second convex

(44). . . Second crossbar

(50). . . Elastic part

(60). . . link

"Second embodiment"

(70). . . Support frame

(72). . . Carrier platform

(722). . . First side

(724). . . Second side

(74). . . Fastener

(76). . . Base frame

(762). . . Support rod

(764). . . Clip

(766). . . First convex

(768). . . Second pivot

(78). . . Feet

(80). . . link

(90). . . Drive

(92). . . Stepping rod

(94). . . Side bar

The first figure is a perspective view of the first preferred embodiment of the present invention when it is unfolded.

The second figure is a side view of the first preferred embodiment of the present invention, mainly showing the state in which the first side of the carrying platform is in the second position.

The third figure is a partial enlarged view of the second figure, mainly showing that the fixing member abuts against the convex portion of the base frame.

The fourth figure is a side view of the first preferred embodiment of the present invention, mainly showing the state in which the first side of the carrying platform is in the first position.

The fifth figure is another side view of the first preferred embodiment of the present invention, mainly showing the state of the legs resting on the base frame.

Figure 6 is a perspective view of the second preferred embodiment of the present invention when it is deployed.

The seventh figure is a side view of a second preferred embodiment of the present invention, mainly showing the state in which the first side of the carrying platform is in the second position.

The eighth figure is a side view of the second preferred embodiment of the present invention, mainly showing the state in which the first side of the carrying platform is in the first position.

The ninth drawing is another side view of the second preferred embodiment of the present invention, mainly showing the state of the legs resting on the base frame.

10. . . Support frame

20. . . Carrier platform

twenty two. . . First side

twenty four. . . Second side

221,241. . . Pivot

223. . . Fastener

26. . . Third side

28. . . Fourth side

30. . . Base frame

302. . . Grip

304. . . Support

306. . . First crossbar

32,34. . . Support rod

342. . . Clip

324,344. . . Second pivot

326,346. . . First pivot

35. . . Pad

36. . . Sleeve

38. . . Wheel

40. . . supporting item

40a, 40b. . . Feet

42. . . Second convex

44. . . Second crossbar

50. . . Elastic part

60. . . link

Claims (18)

A support frame for supporting a machine tool, comprising: a carrying platform having a first side and a second side opposite to the first side; a base frame pivotally connected to the first of the carrying platform a supporting member having a top end pivotally connected to the base frame; and a pair of connecting rods respectively pivotally connected to the second side of the carrying platform and the base frame at both ends thereof; thereby, when the carrying platform is When the first side is slid along the base frame to a first position, the two ends of the two links can be pivoted, so that the second side of the carrying platform is close to the base frame and is in a folded state. When the first side of the carrying platform slides along the base frame to a second position, the two ends of the two links can be pivoted to move the second side of the carrying platform away from the base frame. The support member has a pair of legs, and the legs are respectively pivotally connected to the base frame by the top end thereof; the base frame has two support bars, and the support bars are pivotally connected to the first side of the carrying platform And a first pivoting portion for pivoting the legs; wherein the first side of the carrying platform has a pivotal connection , Each of the support rod pivotally connected to the sleeve by a pivot portion of the first side of the carrier platform. The support frame for supporting the machine tool according to claim 1, further comprising a pair of elastic members respectively disposed on the support rods of the base frame, the two ends of which respectively abut the sliding sleeve and each The first pivoting portion of the support rod. The support frame for supporting the machine tool according to claim 1, further comprising a fixing member, wherein one of the support bars has a convex portion, and the fixing member is pivotally disposed on the first side of the carrying platform And can abut against the convex portion. The support frame for supporting the machine tool according to claim 3, wherein the fixing member has a pulling end that can be pulled by an external force and an abutting end that abuts against the convex portion of the base frame, and the fixing The member is provided with a return spring to enable the fixing member to pivot relative to the carrying platform. The support frame for supporting the machine tool according to claim 1, wherein the first pivoting portion of each of the support rods of the base frame has a recess, and each of the legs has a convex portion, and each of the convex portions can be abutted Each of the recesses is used to position the legs. The support frame for supporting a power tool according to claim 1, wherein the base frame further has a cross bar connected to the bottom ends of the support bars at both ends thereof. The support frame for supporting the machine tool according to claim 1, further comprising two rollers, wherein the rollers are respectively pivoted at the bottom end of the support rod of the base frame. The support frame for supporting the machine tool according to claim 1, wherein the base frame further has a latching member, the latching member is disposed on one of the support rods, and one of the legs is engaged When the legs are engaged with the base frame, they cannot pivot relative to the base frame. The support frame for supporting the machine tool according to claim 1, further comprising two spacers, wherein the spacers are respectively disposed on the support of the base frame A rod for providing cushioning for the depression of the links. The support frame for supporting a power tool according to claim 1, further comprising a crossbar connecting the legs at both ends thereof. The support frame for supporting the machine tool according to claim 1, further comprising a driving member, the driving member having two side bars, the side bars and the connecting rods pivotally connected to the supporting rod of the base frame a second pivoting portion, and the side bars are respectively connected to the links by their top ends. The support frame for supporting the machine tool according to claim 11, wherein the driving member further has a stepping rod, and the two ends of the stepping rod are respectively connected to the bottom ends of the side rods. The support frame for supporting the machine tool according to claim 12, wherein a distance from the top end of the side rod to the second pivot portion is smaller than a distance from the bottom end of the side rod to the second pivot portion. The support frame for supporting the machine tool according to claim 13, wherein the distance from the top end of the side rod to the second pivot portion is approximately one-fifth of the distance from the bottom end of the side rod to the second pivot portion. To one third. The support frame for supporting the machine tool according to claim 11, further comprising a fixing member, wherein one of the support bars has a convex portion, and the fixing member is pivotally disposed on the first side of the carrying platform And can abut against the convex portion. The support frame for supporting the machine tool according to claim 15, wherein the fixing member has a pulling end which can be pulled by an external force and an abutting end abutting against the convex portion of the base frame, and the fixing is fixed. The member is provided with a return spring to enable the fixing member to pivot relative to the carrying platform. The support frame for supporting the machine tool according to claim 1, wherein the top end of the base frame has a grip portion. The support frame for supporting the machine tool according to claim 1, wherein the bottom end of the base frame is bent to form a support portion.