TWI672133B - Clamping mechanism - Google Patents

Abstract

The invention relates to a clamping mechanism comprising a support base, a handle, a clamping unit and a lock unit, wherein the handle is pivoted on the support base, and the clamping unit has a clip disposed on the support base The seat, a clip seat disposed under the support base and a slider disposed on the support base, the lock unit has a slide block disposed on the support base and a lock rod disposed on the support base. Therefore, when the handle is pressed, the lock lever is first unlocked to unlock the slider, so that the slider can be moved, and then the slider is pushed by the handle to push the lower clamp up, so that the upper and lower holders are clamped. One side rail of the operating bed, and finally, during the resetting process of the handle, the lock bar is driven to lock the sliding block to position the slider to prevent accidental loosening.

Description

Clamping mechanism

The invention relates to a clamping mechanism, in particular to a clamping mechanism that is quick to position and easy to disassemble.

Prior to surgery, a prosthetic device (such as a robotic arm) is typically placed on the bedside of the operating bed using a clamp, allowing the surgeon to perform the procedure in a more efficient manner with the aid of the aforementioned assistive devices.

In the prior art related to the clamp, there is a way to lock the clamp to the bedside of the operating bed by means of a knob, which results in disassembly and assembly being very time consuming and laborious. In addition, for example, the US Patent No. 7,003,827 has, in addition to having In addition to the problem of inconvenient operation and inconvenient assembly, coupled with the lack of safety mechanism design, it is easy to be accidentally dropped by the surrounding people.

The main object of the present invention is to provide a clamping mechanism which is quick to locate and easy to disassemble, and has good safety in use.

In order to achieve the above main object, the clamping mechanism of the present invention comprises a support base, a handle, a clamping unit, and a lock unit. The handle is pivotally disposed at one end of the support base; the clamping unit has an upper clamping seat, a slider and a lower clamping seat, the upper clamping seat is fixed on the top surface of the supporting seat, and the slider is disposed on the The support base is movable by the handle and horizontally displaced relative to the support base, and the lower clamp seat is vertically displaceably disposed on the support base, wherein the top end of the slider has a sloped surface, and the bottom end of the lower clamp base has a beveled surface, the inclined surface of the slider abuts against the inclined surface of the lower clamping seat, so that when the sliding block is pushed by the handle, the lower clamping seat can be pushed up from a releasing position to a clamping position, when When the lower clamping seat is in the clamping position, the upper clamping seat is clamped in the middle of one side rail of the operating bed; the locking unit has a stopping block, a return spring and a locking bar, and the stopping block can be The second positioning portion of the sliding block cooperates with a first positioning portion of the slider, and the return spring acts on the stopping block for Pushing the stop slider toward the slider, the lock lever Displaced horizontally on the support base and movable by the handle to actuate the stop slider between a locked position and an unlocked position, and when the lock lever is in the locked position, one of the lock levers The locking portion pushes the stopping slider so that the stopping slider positions the slider, and the lower clamping seat can be held in the clamping position, and when the locking lever is in the unlocking position, the locking lever The locking portion releases the stopping slider, so that the stopping slider allows the slider to move horizontally, and the user can move the invention upward, by the side rail contacting the upper clamping seat and the lower clamping seat, The side rail applies a force to the lower clamp to push the slider to the left until the lower clamp is lowered to the release position to release the side rail.

It can be seen from the above that the clamping mechanism of the present invention can be installed and disassembled with one hand, and has a safety mechanism to avoid accidental loosening caused by accidental contact by others, thereby achieving rapid positioning, convenient disassembly and assembly, and increased use. The purpose of security.

Preferably, the side rail has an outer side surface, and the handle is pivotally disposed on the support base by a pivot. The axial direction of the pivot shaft and the outer side of the side rail extend perpendicular to each other, so as to avoid The operation direction of the handle interferes with people or objects around it, thereby increasing the convenience of operation.

Preferably, the handle has a push-over arc having a resisting plane. Thereby, when the handle is pressed, the pushing surface of the handle pushes the abutting plane of the slider, so that the handle pushes the slider in a stable and smooth manner.

Preferably, the handle has a first lateral portion and a second lateral portion, the first and second lateral portions are located on the same side of the handle, and the length of the first lateral portion is smaller than the second horizontal portion. a length of the extension portion, and the position of the first lateral extension portion is lower than the position of the second lateral extension portion, the lock rod has one of the locking portions, and the other end of the locking rod has an upright portion and an ejector unit. Thereby, when the pushing portion of the locking bar is pushed by the first lateral extension of the handle, the locking bar moves from the locking position toward the unlocking position, when the upright portion of the locking bar is second by the handle When the cross-section is pushed, the lock lever moves from the unlocked position toward the locked position.

Preferably, the support base has a long hole, and one end of the lock rod has a dial portion perpendicular to the upright portion, and the dial portion of the lock rod can be horizontally displaced through the strip of the support base The hole protrudes from the support seat back to one side of the side rail to facilitate the operator to unlock the operation with one hand.

Preferably, the support base further has an opening, the stopping block has an extending portion, and the extending portion of the stopping block is embedded in the opening of the supporting seat, and the locking unit further has a linking rod, The linkage rod abuts against one side of the support rail facing the side rail, and one end of the linkage rod is fixed to the extension portion of the stopping slider, and the other end of the linkage rod has a convex portion. Thereby, when the lock lever is in the locked position, the dialing portion of the lock lever pushes the convex portion of the linkage rod as a safety mechanism of the second lane, when the lock lever is located at the unlocked position, The dialing portion of the lock lever releases the convex portion of the linkage lever, so that the slider allows the slider to be displaced.

Preferably, the support base is provided with a magnet, and the handle has a notch. When the handle is embedded in the magnet by the notch, the handle is positioned by the magnet to prevent the handle from malfunctioning.

The detailed construction, features, assembly or use of the clamping mechanism provided by the present invention will be described in the detailed description of the subsequent embodiments. However, it should be understood by those of ordinary skill in the art that the present invention is not limited by the scope of the invention.

The Applicant first explains here, in the entire specification, including the embodiments described below and the claims of the patent application, "upper", "lower", "left", "right", "top", "bottom" Directional terms such as "inside" and "outside" are based on the direction in the schema. In the following embodiments, the same reference numerals will be given to the same or similar elements or structural features thereof.

Referring to Figures 1 through 5, the clamping mechanism 10 of the present invention includes a support base 20, a handle 30, a clamping unit 40, and a lock unit 60.

The support base 20 is composed of a front baffle 21 and a rear baffle 23. The inner side surface of the front baffle 21 has a limiting slot 22, and one end of the tailgate 23 has a long hole 24 extending through the inner and outer sides, and the center of the tailgate 23 has a through opening of the inner and outer sides. Hole 25.

The handle 30 is pivotally mounted to one end of the support base 20 by a pivot 35. The handle 30 has a notch 31 on one side of the front baffle 21, and the handle 30 has a first lateral portion 32 and a second lateral portion 33 toward the side of the rear baffle 23, the length of the first lateral portion 32. It is smaller than the length of the second extending portion 33, and the position of the first lateral extending portion 32 is lower than the position of the second lateral extending portion 33. Further, the handle 30 further has a pushing curved surface adjacent to the second lateral extending portion 33. 34.

The clamping unit 40 has an upper holder 41, a slider 44, and a lower holder 48, wherein:

The upper holder 41 is locked to the top end of the tailgate 23 by a fixing member such as a screw. One end of the upper holder 41 has a pair of upper clamping portions 42, and the other end of the upper holder 41 is integrally connected to a mounting seat. 43, the mount 43 is used to mount a set of surgical aids (such as a robotic arm, not shown).

The slider 44 is disposed in the support base 20 and has a receiving plane 45. When the resisting plane 45 of the slider 44 is pushed by the pushing surface 34 of the handle 30, the slider 44 will horizontally displace relative to the supporting base 20. In addition, the top surface of the slider 44 forms a slope 46, and the bottom surface of the slider 44 has a first positioning portion 47. In the embodiment, as shown in FIG. 9, the first positioning portion 47 is composed of a plurality of The grooves 472 are spaced apart, and the groove walls of each groove 472 have a first plane 474 and a first slope 476 opposite the first plane 474.

The lower holder 48 has a shaft portion 49. The shaft portion 49 is vertically disposed to be displaced from the support base 20. The top end of the shaft portion 49 is integrally connected to a lower portion of the bottom portion of the shaft portion 49. With a ramp 51, the lower clip 48 abuts the ramp 46 of the slider 44 with the ramp 51 (as shown in Figure 6a), causing the slider 44 to push the lower clip 48 up when a horizontal displacement occurs.

The lock unit 60 has a stop slider 61, a return spring 64, a lock lever 66, and a linkage lever 71, wherein:

The stop slider 61 is disposed on the support base 20 so as to be vertically displaceable, and the top surface of the stop slide 61 has a second positioning portion 62. In the embodiment, as shown in FIG. 9, the second positioning portion 62 is composed of a plurality of The protrusions 622 are arranged at equal intervals, and the protrusions 622 are embedded in the grooves 472 in a one-to-one manner. Moreover, the protrusions 622 have a second plane 624 and a second slope 626 opposite to the second plane 624. The second plane 624 and the second slope 626 of the bump 622 respectively abut the first plane 474 of the recess 472 and the first slope 476, such that the second positioning portion 62 of the slider 61 and the slider 44 A positioning portion 47 cooperates with each other. In addition, one end of the stopping slider 61 has an extending portion 63, and the stopping slider 61 is embedded in the opening 25 of the tailgate 23 with the extending portion 63, and the extension portion 63 of the stopping slider 61 is smaller than the tailgate. The opening 25 of the 23 is sized such that the two do not interfere when the slider 61 is displaced up and down.

The top and bottom ends of the return spring 64 (here, the compression spring) respectively abut against the bottom surface of the stop slider 61 and the top surface of a carrier plate 65. The carrier plate 65 is locked in front by a fixing member such as a screw. The baffle 21 causes the return spring 64 to provide an elastic force to push the stop slider 61 toward the slider 44.

The lock lever 66 is disposed on the support base 20 in a horizontally displaceable manner. The lock lever 66 has a limiting portion 67 at the center of the lock lever 66. The lock lever 66 is embedded in the limiting slot 22 of the front baffle 21 by the limiting portion 67, and the lock lever 66 is One end has a locking portion 68, and the locking portion 68 of the locking rod 66 is located below the extending portion 63 of the stopping slider 61. The other end of the locking rod 66 has an upright portion 69 and a toggle perpendicular to the upright portion 69. a portion 70 and an ejector portion 81 (as shown in Figures 4 and 5), the dial portion 70 of the lock lever 66 is disposed through the elongated hole 24 of the tailgate 23 and protrudes from the outer side of the tailgate 23 (That is, the support 20 is on the side of one side of the side rail 12, as shown in Fig. 1).

The linkage rod 71 abuts against the outer side of the tailgate 23 (ie, one side of the support base 20 facing away from the side rail 12, as shown in FIG. 1), and one end of the linkage rod 71 has a fixing portion 74, and the linkage rod 74 The fixing portion 74 is locked to the extending portion 63 of the stopping slider 61 by a fixing member such as a screw, so that the linking rod 71 can be synchronized with the stopping slider 61, and the other end of the linking rod 71 has a convex portion 72, which is interlocked. The rod 71 abuts against the dial portion 70 of the lock lever 66 with the convex portion 72 as a safety mechanism for the second track.

In the actual erection, the handle 30 is first rotated so that the handle 30 first pushes the ejector portion 81 of the lock lever 66 with the first lateral extension 32 to cause the lock lever 66 to start moving to the right. Since the handle 30 swings around the pivot 35, Therefore, the first crossbar portion 32 is separated from the urging portion 81. Next, as shown in FIGS. 6a and 6b (for convenience of explanation, the interlocking lever 71 is omitted in FIG. 6b), when the lock portion 68 of the lock lever 66 is displaced from the extension portion 63 of the stopper slider 61, the lock lever 66 That is, the unlocking position P3 is reached, and the stop slider 61 can be actuated up and down at this time, and then the handle 30 is continuously pushed to the left. At this time, because the first lateral extension 32 of the handle 30 is relatively short in length, such as As shown in Figures 7 and 8, so that during the continuous pivoting of the handle 30, the first traverse portion 32 of the handle 30 does not hit the upright portion 69 of the lock bar 66 to avoid mutual interference. Then, the handle 30 starts to push the receiving plane 45 of the top slider 44 by pushing the curved surface 34. At this time, since the stopping slider 61 is in a state of being movable up and down, the slider 44 can start to move to the right, as in the 6c and 6d. As shown in the figure, during the movement of the slider 44, on the one hand, the first plane 474 of the first positioning portion 47 pushes the second plane 624 of the second positioning portion 62 of the stopping slider 61, so that the slider 61 is sliding. The double action of the block 44 and the return spring 64 produces a reverse up and down motion, and on the other hand, the inclined surface 51 of the lower clamp 48 is pushed up by the inclined surface 46, so that the lower clamp 48 is released from the release position P1 (as shown in Fig. 6a). Pushing up to the clamping position P2 (as shown in Fig. 6d), until the lower holder 48 reaches the clamping position P2, the upper holder 41 can be engaged to sandwich the side rail 12 of the operating bed. Then, the handle 30 is pushed to the right, so that the handle 30 pushes the upright portion 69 of the lock lever 66 with the second lateral extension 33, as shown in Fig. 6e, because the second lateral extension 33 of the handle 30 is at the length. In a relatively long relationship, so that during the reverse pivoting of the handle 30, the second lateral extension 33 of the handle 30 will continue to contact the upright portion 69 of the locking bar 66, causing the locking bar 66 to continue to move to the left until the lock When the locking portion 68 of the lever 66 and the dialing portion 70 of the lock lever 66 are respectively supported by the extending portion 63 of the stopping slider 61 and the convex portion 72 of the interlocking lever 71, as shown in FIG. 6f, the locking lever 66 is reached. In the locked position P4, the stopper slider 61 cannot be moved up and down, and at this time, the slider 44 is positioned by the stopper slider 61 and cannot be moved, so that the erection is completed.

However, in order to prevent the handle 30 from malfunctioning, a magnet 73 (shown in FIG. 2) is disposed on the inner side of the front bezel 21, and when the handle 30 is in the initial state as shown in FIG. 6a, the handle 30 will be embedded in the notch 31. The magnet 73 is caught by the magnet 73 so that the handle 30 is attracted by the magnet 73. Further, after the erection is completed, the axial direction A of the pivot 35 and the outer side 14 of the side rail 12 extend perpendicular to each other, so that the operation direction of the handle 30 can be prevented from interfering with the surrounding person or object.

On the other hand, when disassembling, the toggle portion 70 of the lock lever 66 is plucked to the right with one hand, as shown in Fig. 6g, on the one hand, the dial portion 70 of the lock lever 66 is disengaged from the projection of the linkage lever 71. On the other hand, the locking portion 68 of the locking lever 66 is disengaged from the extending portion 63 of the stopping slider 61, that is, the locking lever 66 is moved to the unlocking position P3, and then the fixing portion 74 of the linkage lever 71 is pressed down with one hand. Since the fixing portion 73 of the interlocking lever 71 and the extending portion 63 of the stopping slider 61 are fixed together, the stopping slider 61 moves synchronously downward, and thus, the stopping slider 61 compresses the return spring 64 on the one hand, and releases the spring 64 on the other hand. For the positioning of the slider 44, the user can then hold the mounting seat 43 and apply upward force. By the side rail 12 contacting the upper clamping seat 41 and the lower clamping seat 48, the side rail 12 is biased to the lower clamping seat 48. Pushing the slider 44 to the left until the lower holder 48 is lowered to the release position P1 as shown in Fig. 6a, the side rail 12 can be released for disassembly.

It should be additionally noted that there may be different structural changes between the groove 472 of the slider 44 and the protrusion 622 of the stop slider 61. As shown in FIG. 10, the groove 472 of the slider 44 has a first A plane 474 and a first arcuate surface 478 opposite the first plane 474, the bump 622 of the stop slider 61 has a second plane 624 and a second arcuate surface 628 opposite the second plane 624, the recess of the slider 44 The first plane 474 of the slot 472 abuts the second plane 624 of the bump 622 of the stop slider 61, the first curved surface 478 of the recess 472 of the slider 44 and the second projection 622 of the stop slider 61 The curved surfaces 628 abut each other, so that the first positioning portion 47 of the slider 44 and the second positioning portion 62 of the stopping slider 61 can also utilize the cooperation between each other to produce a positioning effect.

In summary, the clamping mechanism 10 of the present invention can be installed and disassembled with one hand, and has a safety mechanism to avoid accidental loosening caused by accidental contact by others, thereby achieving rapid positioning, convenient disassembly and assembly, and Increase the use of security.

10‧‧‧Clamping mechanism

12‧‧‧ Side rail

14‧‧‧Outside

20‧‧‧ support

21‧‧‧ front baffle

22‧‧‧Limited slot

23‧‧‧Baffle

24‧‧‧ long hole

25‧‧‧Opening

30‧‧‧Hands

31‧‧‧ gap

32‧‧‧First transverse section

33‧‧‧Second transverse section

34‧‧‧Pushing the top surface

35‧‧‧ pivot

40‧‧‧Clamping unit

41‧‧‧Upper holder

42‧‧‧Upper gripping section

43‧‧‧ Mounting

44‧‧‧ Slider

45‧‧‧Received plane

46‧‧‧Bevel

47‧‧‧First Positioning Department

472‧‧‧ Groove

474‧‧‧ first plane

476‧‧‧ first slope

478‧‧‧ first curved surface

48‧‧‧ lower clamp

49‧‧‧Axis

50‧‧‧ Lower gripping section

51‧‧‧Bevel

60‧‧‧Lock unit

61‧‧‧stop slider

62‧‧‧Second Positioning Department

622‧‧‧Bumps

624‧‧‧ second plane

626‧‧‧Second slope

628‧‧‧second curved surface

63‧‧‧Extension

64‧‧‧Return spring

65‧‧‧ board

66‧‧‧Lock lever

67‧‧‧Limited

68‧‧‧Lock Department

69‧‧‧Upright Department

70‧‧‧Trading Department

71‧‧‧ linkage rod

72‧‧‧ convex

73‧‧‧ Magnet

74‧‧‧ Fixed Department

81‧‧‧Pushing Department

P1‧‧‧ release position

P2‧‧‧Clamping position

P3‧‧‧Unlocked position

P4‧‧‧ locked position

A‧‧‧Axial

Fig. 1 is a perspective view showing the appearance of a clamping mechanism of the present invention fixed to a side rail. Figure 2 is an exploded perspective view of the clamping mechanism of the present invention. Figure 3 is a plan view of the clamping mechanism of the present invention. Fig. 4 is a partial perspective view of the clamping mechanism of the present invention, mainly showing the relative position between the first lateral extension of the handle and the pushing portion of the lock lever. Fig. 5 is a partial side elevational view of the clamping mechanism of the present invention, mainly showing the relative position between the first lateral extension of the handle and the pushing portion of the lock lever. The figures 6a-6g are similar to those of the third figure, and mainly show the operation flow of the clamping mechanism of the present invention. Figure 7 is a partial perspective view of the clamping mechanism of the present invention, mainly showing the relative position between the first lateral extension of the handle and the upright portion of the lock bar. Figure 8 is a partial side elevational view of the gripping mechanism of the present invention, primarily showing the relative position between the first cross-section of the handle and the upright portion of the lock bar. Figure 9 is a partial enlarged view of the clamping mechanism of the present invention, mainly showing the structural relationship between the first positioning portion of the slider and the second positioning portion of the slider. Fig. 10 is similar to Fig. 9, and mainly shows another embodiment of the first positioning portion of the slider and the second positioning portion of the slider.

Claims (10)

A clamping mechanism for fixing a surgical aid to a side rail of a surgical bed, the clamping mechanism comprising: a support base; a handle pivoted at one end of the support base; a clamping unit having a An upper clamping seat, a sliding block and a lower clamping seat, the upper clamping seat is fixed on a top surface of the supporting seat, the slider is disposed on the supporting base and can be pushed up by the handle and horizontally displaced relative to the supporting seat, The slider has a first positioning portion and a sloped surface. The lower holder is vertically displaceably disposed on the support base and has a slope. The slope of the lower holder abuts against the slope of the slider, so that the lower portion The clamping seat can be pushed by the slider to rise from a release position to a clamping position, the side rail is held in the middle by the upper and lower clamping seats when the lower clamping seat is in the clamping position; and a lock The control unit has a stop slider, a return spring and a lock lever, and the stop slider is disposed on the support base up and down and has a second positioning portion, the second positioning portion of the stop slider and the sliding portion The first positioning portions of the block cooperate with each other, and the return spring acts on the stopping slider. For pushing the stop slider toward the slider, the lock bar is horizontally displaceably disposed on the support base and can be driven by the handle to face between an unlocked position and an unlocked position. The slider is actuated. When the lock lever is in the locked position, one of the lock levers pushes the stop slider to position the slider to position the slider when the lock lever is located at the unlocked position. When the locking portion of the lock lever releases the stopping slider, the stopping slider allows the slider to move horizontally. The clamping mechanism of claim 1, wherein the side rail has an outer side, the handle is pivotally mounted to the support by a pivot, the axial direction of the pivot and the extending direction of the outer side of the side rail Vertical to each other. The clamping mechanism of claim 1, wherein the handle has a topping curved surface, the sliding block has a receiving plane, and the pushing curved surface of the handle pushes the abutting plane of the sliding block to make the sliding The block raises the lower holder from the release position to the clamped position. The clamping mechanism of claim 1, wherein the handle has a first lateral portion and a second lateral portion, the first and second lateral portions are located on the same side of the handle, the first lateral extension The length of the portion is smaller than the length of the second lateral portion, and the position of the first lateral portion is lower than the position of the second lateral portion. One end of the locking rod has the locking portion, and the other end of the locking rod Having a straight standing portion and a pushing portion, when the pushing portion of the locking rod is pushed by the first lateral extending portion of the handle, the locking rod moves from the locking position toward the unlocking position, when the locking rod is erected When the portion is pushed by the second lateral extension of the handle, the lock lever moves from the unlocked position toward the locked position. The clamping mechanism of claim 1, wherein the support base has a limiting slot, the locking bar has a limiting portion, and the limiting portion of the locking bar is horizontally displaceably embedded in the limit of the supporting seat groove. The clamping mechanism of claim 1, wherein the support base has a long hole, and one end of the lock rod has a dial portion perpendicular to the upright portion, and the toggle portion of the lock rod can be horizontally displaced The long hole is disposed in the support seat and protrudes from the support seat to a side of the side rail. The clamping mechanism of claim 6, wherein the support base further has an opening, the stopping block has an extending portion, and the extending portion of the stopping block is engaged with the opening of the supporting seat and receives the locking a lock portion of the rod, the lock unit further has a linkage rod, the linkage rod abuts against a side of the support rail facing the side rail, and one end of the linkage rod is fixed to the extension portion of the stop slider, The other end of the linkage rod has a convex portion, and when the lock lever is in the locked position, the toggle portion of the lock lever pushes the convex portion of the linkage rod, and when the lock lever is in the unlocked position, the lock lever The dial portion releases the convex portion of the linkage rod. The clamping mechanism of claim 1, wherein the support base is provided with a magnet, and the handle has a notch. When the handle is embedded in the magnet by the notch, the handle is positioned by the magnet. The clamping mechanism of claim 1, wherein the clamping unit further has a mounting base coupled to the upper clamp for mounting the surgical aid. The clamping mechanism of claim 1, wherein the first positioning portion of the slider is formed by a plurality of equally spaced grooves, and the second positioning portion of the sliding block is a plurality of protrusions arranged at equal intervals. The grooves and the bumps are mutually inserted one to one.