TWI491462B - Stand for machine tools - Google Patents

Description

Tool support frame

The invention relates to machine tools, in particular to a support frame for a machine tool.

The Republic of China Patent No. 1311520 discloses a "support frame for implements", which mainly pulls the two second links at the same time by pulling the handle, and then pulls the two first links simultaneously by the two second links. The first connecting rods are disengaged from the positioning holes of the second leg for folding the support frame.

However, in the design of the patent case, after the support frame is folded, the user must pull the hook member to force the hook member to hook the convex shaft of the first leg to complete the support frame in the folded state. When the support frame is to be unfolded, the user must first release the hook relationship between the hook member and the convex shaft before the support frame can be unfolded, and the elastic member is exposed outside the second leg. It is susceptible to lateral deformation when it is subject to interference or uneven force of other foreign objects. In other words, the operation process of this patent case is cumbersome and structurally complicated.

The main object of the present invention is to provide a support frame for a machine tool, which has a simple structure and convenient operation.

To achieve the above object, the support frame of the present invention includes a load bearing platform, a support assembly, and a control assembly. The support assembly has a pair a first leg, a pair of second legs, a shaft, and a pair of compression springs, each of the first leg and each of the second legs being pivotally connected to one end of the shaft, each of the second The top end of the leg is pivotally connected to the carrying platform, and each of the compression springs is received in the first leg and abuts against the shaft. The first leg has a first positioning hole, and the first leg has a first positioning hole. a second positioning hole below the first positioning hole, and a guiding groove connecting the first and second positioning holes; the control component has two positioning pins, a control member, and two return springs, one end of each of the positioning pins Abutting the compression spring via the guiding platform and the guiding groove of each of the first legs, and optionally inserting into the first positioning hole or the second positioning hole of each of the first legs, The support assembly is respectively positioned in a deployed position and a folded position, and the control member is connected to the two positioning pins for simultaneously driving the two positioning pins away from the first positioning holes or the second positioning holes of the two first legs, so that The support assembly is switchable between the deployed position and the folded position, each Wherein a return spring disposed in the positioning pin to be held in each of the positioning pins of the positioning holes of the first leg of the first or the second positioning hole.

In the embodiment of the present invention, the control member has a stopper, two levers, and a flexible grip. The stopper is disposed on the positioning pin, and each of the levers is pivotally disposed on the carrying platform and has one end thereof. Resisting the block, the flexible grip is sleeved between the two levers for driving the two levers to pivot at the same time, so that each of the levers can be pushed by the pawl when pivoting Pulling the positioning pin away from the first and second positioning holes.

In another embodiment of the present invention, the control member has a linkage plate, two links, and a grip, and the two ends of each of the links are respectively pivotally connected to the linkage plate. And the positioning pin, the gripper is connected to the linkage plate for driving the linkage plate to pivot, so that the two links can synchronously pull the positioning pins away from the first and second positioning by the rotation of the linkage plate hole.

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

Referring to the first figure, a support frame 10 according to a first preferred embodiment of the present invention includes a carrying platform 20, a support assembly 30, and a control assembly 40.

The carrying platform 20 is a rectangular frame for carrying a machine tool (such as a table saw machine).

The support assembly 30 has a pair of first legs 31, a pair of second legs 32, a shaft 33, and two compression springs 34. The first leg 31 and each of the second legs 32 are pivotally connected to one end of the shaft 33, and the top ends of the second legs 32 are pivotally connected to the carrying platform 20, and further, the first legs 31 are The bottom end is provided with a roller 35, and the upper half of each of the first legs 31 has a first positioning hole 312, a second positioning hole 314 located below the first positioning hole 312, and a first and second positioning. The guide grooves 316 of the holes 312, 314; the compression springs 34 are accommodated in the first leg 31, so that the compression springs 34 can be restricted by the first leg 31 when the force is uneven, thereby avoiding lateral deformation, and The bottom end of each compression spring 34 abuts against the shaft 33 for providing a cushioning effect and a resetting effect.

As shown in the second and third figures, the control assembly 40 has a pair of sleeves 41, Two pairs of stoppers 42, a pair of positioning pins 43, a control member 44, and a pair of return springs 45. The sleeves 41 are respectively fixed to the opposite sides of the bearing platform 20; the stoppers 42 are disposed in pairs in the radial direction of the sleeves 41 in the sleeves 41; the positioning pins 43 can be respectively The shaft 41 is axially movably disposed in the sleeve 41 and passes through the bearing platform 20 and the guide groove 316 of the first leg 31 at one end thereof, and is pressed against the top end of each compression spring 34 by a pressing block 46 for Inserted into the first positioning hole 312 or the second positioning hole 314 of the first leg 31, when the positioning pin 43 is inserted into the first positioning hole 312, the support assembly 30 is positioned at a deployed position P1, as shown in the first figure. As shown, when the positioning pin 43 is inserted into the second positioning hole 314, the support assembly 30 is positioned at a folding position P2 as shown in the fourth figure; the control member 44 has a first stop 47 in this embodiment. a second stopper 48, two levers 49, and a flexible grip 50, wherein the first stopper 47 is fixed to one end of the positioning pin 43 and located outside the sleeve 41, and the second stopper 48 is fixed to the positioning The pin 43 is located in the sleeve 41. Each of the levers 49 is pivotally mounted on the carrying platform 20 and has one end abutting against the first stop 47. The flexible grip 50 is sleeved between the two levers 49. In addition, the return spring 45 is sleeved on the positioning pin 43 and abuts between the second stop 48 of the control member 44 and the two stops 42.

When the support frame 10 is to be folded, the flexible grip 50 is pressed to make the flexible grip 50 transmit the force to the two levers 49 by its own material characteristics, so that the two levers 49 simultaneously pivot. And when the pivoting, the positioning pin 43 is pulled out of the first positioning hole 312 of each of the first legs 31 by pushing the first stoppers 47, and as shown in the third figure, the return spring 45 is caused by the second stopper 48. Compressed, then the height of the carrying platform 20 will be along each of the positioning pins 43 The guide groove 316 of the first leg 31 moves downward and slowly decreases. At this time, the first leg 31 and each of the second legs 32 are relatively pivoted, and each compression spring 34 is pressed by the block 46. The squeezing is provided to provide a cushioning force, so that the load-bearing platform 20 can be smoothly lowered in height until the locating pins 43 are automatically inserted into the second positioning holes 314 of the first legs 31 by the elastic force of the return springs 45, and are supported. The assembly 30 is positioned at the collapsed position P2, as shown in the fourth figure, so that the two rollers 35 can be used to carry the machine tool into position.

When the support frame 10 is to be unfolded, the flexible grip 50 is also pressed to drive the two levers 49 to pivot, so that the positioning pins 43 are pushed by the levers 49 that abut each other to be separated from the first legs 31. The second positioning hole 314 is further applied to the lifting platform 20 to pivot the first leg 31 and the second leg 32 relative to each other while the positioning pins 43 are along the first legs 31. The guiding groove 316 moves upward, and the compression spring 34 at this time provides a resetting force to relieve the burden on the user. When the carrying platform 20 is propped up, each positioning pin 43 is automatically inserted by the elastic force of each return spring 45. In the first positioning hole 312 of each of the first legs 31, as shown in the second figure, the support assembly 30 is positioned in the deployed position P1 as shown in the first figure, so that the machine tool can be operated.

In order to allow the flexible grip 50 to more reliably distribute the user's urging force to the two levers 49, the two levers 49 can be slidably coupled together by one end of the flexible grip 50, in detail As shown in the fifth to sixth figures, one of the levers 49 has a through hole 492, and the other of the levers 49 has a long slot 494 communicating with the through hole 492. The shaft member 52 is inserted through the through hole 492 and the slot 494. Inside, the two levers 49 can be used when the flexible grip 50 is stressed Synchronous pivoting and sliding of the shaft member 52 within the elongated slot 494 during synchronous pivoting.

Referring to FIG. 9 again, the support frame 60 of the second preferred embodiment of the present invention has substantially the same structure as the above embodiment except that the structure of the control assembly is different.

In this embodiment, the control assembly 70 has two baffles 71, two positioning pins 72, two stops 73, two return springs 74, and a control member 75, wherein each baffle 71 is fixed to the bottom surface of the carrying platform 20. Each of the stopping members 73 is radially disposed through the positioning pin 72; one end of each of the positioning pins 72 passes through the baffle 71, and the other end passes through the bearing platform 20 and the guiding groove 316 of the first leg 31 while being pressed by The block 46 is disposed at the top end of each of the compression springs 34 for inserting the first positioning hole 312 or the second positioning hole 314 of the first leg 31; each of the return springs 74 is sleeved on the positioning pin 72 and abuts against the baffle plate The control member 75 has a linkage plate 76, two links 77, and a grip 78. The two ends of each link 77 are respectively pivotally connected to the linkage plate 76 and the positioning pin 72, and the grip 78 The linkage plate 76 is connected to synchronously drive the linkage plate 76 to pivot.

In operation, the grip 78 is first grasped and the grip 78 is rotated by a predetermined angle to drive the linkage plate 76 to pivot. Then, the two links 77 are synchronously pulled by the rotation of the linkage plate 76 to release the positioning pins 72. The positioning state between the first leg 31 is as shown in the tenth and eleventh views, so that the user can smoothly complete the unfolding and folding of the support frame 60.

In summary, the support frame 10, 60 of the present invention has a simpler structural design than the conventional patent case, as long as the flexible grip 50 of the control member 44 or the grip 78 of the rotation control member 75 is pressed to support Frame 10, 60 The folding will be automatically positioned after the completion of the folding. It is not necessary to additionally configure the hooks of the patent application, which is quite easy and convenient to operate, and can indeed achieve the purpose of increasing the convenience of use.

Finally, the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. The alternative or variations of other equivalent elements are also covered by the scope of the patent application.

"First Embodiment"

10‧‧‧Support frame

20‧‧‧Loading platform

30‧‧‧Support components

31‧‧‧First foot

312‧‧‧First positioning hole

314‧‧‧Second positioning hole

316‧‧ ‧ guide slot

32‧‧‧second foot

33‧‧‧ shaft

34‧‧‧Compression spring

35‧‧‧Roller

P1‧‧‧Expanded position

P2‧‧‧ folding position

40‧‧‧Control components

41‧‧‧ casing

42‧‧‧stops

43‧‧‧Locating pin

44‧‧‧Controls

45‧‧‧Return spring

46‧‧‧Clamps

47‧‧‧First stop

48‧‧‧second stop

49‧‧‧Pole

492‧‧‧Perforation

494‧‧‧Long slot

50‧‧‧Flexible grip

52‧‧‧ shaft parts

"Second embodiment"

60‧‧‧Support frame

70‧‧‧Control components

71‧‧‧Baffle

72‧‧‧Locating pin

73‧‧‧stops

74‧‧‧Return spring

75‧‧‧Controls

76‧‧‧ linkage board

77‧‧‧ linkage

78‧‧‧ grip

The first figure is a perspective view of the first preferred embodiment of the present invention in a deployed position.

The second figure is a top cross-sectional view of the control assembly provided by the first preferred embodiment of the present invention, mainly showing the state of the flexible grip before pressing.

The third figure is similar to the second figure, mainly showing the state of the flexible grip after pressing.

The fourth figure is a side view of the first preferred embodiment of the present invention in a folded position.

The fifth figure is similar to the third figure, mainly showing the state of the flexible grip before pressing.

Figure 6 is a partial cross-sectional view showing the control assembly of the first preferred embodiment of the present invention, mainly showing the connection relationship between the two levers.

The seventh figure is similar to the fifth figure, mainly showing the state of the flexible grip after pressing.

The eighth figure is similar to the sixth figure and mainly shows the state in which the shaft member slides along the long groove.

Figure 9 is a perspective view of the second preferred embodiment of the present invention in a deployed position.

Figure 11 is a plan view of the control assembly provided by the second preferred embodiment of the present invention, mainly showing the state of the grip before rotation.

The eleventh figure is similar to the tenth figure, and mainly shows the state of the grip after the rotation.

10‧‧‧Support frame

20‧‧‧Loading platform

30‧‧‧Support components

31‧‧‧First foot

316‧‧ ‧ guide slot

32‧‧‧second foot

33‧‧‧ shaft

34‧‧‧Compression spring

35‧‧‧Roller

P1‧‧‧Expanded position

40‧‧‧Control components

Claims (8)

A support frame for a machine tool includes: a load bearing platform; a support assembly having a pair of first legs, a pair of second legs, a shaft, and two compression springs, each of the first legs and each of the first legs The second leg is pivotally connected to one end of the shaft, and the top end of each of the second legs is pivotally connected to the carrying platform, and each of the compression springs is received in the first leg and abuts against the shaft a rod, wherein each of the first legs has a first positioning hole, a second positioning hole located below the first positioning hole, and a guiding groove connecting the first and second positioning holes; and a control component Having two positioning pins, a control member, and two return springs, one end of each of the positioning pins passes through the guiding platform and the guiding groove of each of the first legs to abut the compression spring, and is selectively inserted The first positioning hole or the second positioning hole of each of the first legs is configured to respectively position the support assembly in a deployed position or a folding position, and the control member connects the two positioning pins for simultaneously driving The two positioning pins are separated from the first positioning holes of the two first legs or Positioning the hole to enable the support assembly to switch between the deployed position and the folded position, each of the reset springs being disposed on one of the positioning pins for holding each of the positioning pins on each of the first legs The first positioning hole or the second positioning hole. The support frame of the machine tool according to claim 1, wherein the control member has a first stop and a double lever, the first stop is disposed on the positioning pin, and each of the levers is pivotally mounted on the carrying platform and One end of the first stop is abutted against the first stop. The support frame of the machine tool according to claim 2, wherein the control member There is also a flexible grip that is sleeved between the two levers. The support frame of the machine tool according to claim 3, wherein the control component further has a pair of sleeves and at least two stops, each of the sleeves being fixed to the carrying platform and being provided for the positioning pins, each of the blocks The stopper is disposed in the sleeve along the radial direction of the sleeve, and the control member further has a second stopper disposed on the positioning pin, and each of the return springs is sleeved on the positioning pin and resists Between the second stopper and the stopper. The support frame of the machine tool according to claim 3 or 4, wherein the two levers are connected by a shaft member, one of the levers has a through hole, and the other of the levers has a through hole. a long slot, the shaft member is disposed in the through hole and slidably inserted in the long slot. The support frame of the machine tool according to claim 1, wherein the control member has a linkage plate and two links, and the two ends of the link are respectively pivotally connected to the linkage plate and a positioning pin, so that the two links The positioning pins can be synchronously pulled out of the first and second positioning holes by the rotation of the linkage plate. The support frame of the machine tool according to claim 6, wherein the control member has a grip connecting the linkage plate for driving the linkage plate to pivot. The support frame of the machine tool of claim 7, wherein the control component further has two baffles and two stops, each of the baffles being fixed to the carrying platform and provided by the positioning pin, each of the stops The locating pin is disposed on a locating pin, and each of the return springs is sleeved on the locating pin and abuts between the baffle and the baffle.