TWI798121B - Positioning device - Google Patents

Abstract

A positioning device is provided, including: a base seat, including a plurality of through holes and a slot; a clamping assembly, disposed within the slot, including a first clamping member and a second clamping member; an adjustment assembly, including a first driving rod, a second driving rod and at least one rotary rod, the first driving rod including a first thread section and a first bevel gear, the second driving rod including a second thread section and a second bevel gear, the first clamping member and the second clamping member respectively disposed on the first thread section and the second thread section, each rotary rod including a third bevel gear, the third bevel gear respectively meshed with the first bevel gear and the second bevel gear.

Description

Positioning means

In particular, the invention relates to a positioning device.

The known positioning device, such as Taiwan Patent No. I720854, is screwed on the guide post channel with a guide post, and one of the guide posts is tapered with the first guide surface to move axially, and radially Pushing against the plurality of steel balls drives the first and second clamping parts to clamp the first post and the second post.

However, in the conventional positioning device, the guide column pushes against the plurality of steel balls and the plurality of steel balls pushes against the first and second clamping parts in point-to-point contact, which is likely to cause force during the pushing process. The phenomenon of unevenness and the tendency of the first and second clamping parts to deflect occurs, so that they cannot move smoothly and cannot securely clamp the first post and the second post.

Therefore, it is necessary to provide a novel and progressive positioning device to solve the above problems.

The main purpose of the present invention is to provide a positioning device, which can stably drive a first clamping block and a second clamping block to move relative to each other with an even force.

To achieve the above object, the present invention provides a positioning device, comprising: a base, which includes a plurality of perforations and a chute extending along a first direction; a clamping component, which is arranged in the chute, the clamping The assembly includes a first clamping block and a second clamping block, and the first clamping block and the second clamping block can move relative to each other along the first direction between a locking position and a releasing position, and are opposite to at least one of the through holes. move; and an adjustment assembly, which includes a first driving rod, a second driving rod and at least one rotating rod, the at least one rotating rod is rotatably arranged on the base, the first driving rod and the second driving rod The rods are respectively rotatably arranged in the chute, the first driving rod includes a first threaded segment and a first bevel gear, the second driving rod includes a second threaded segment and a second bevel gear, the The first clamping block and the second clamping block are respectively arranged on the first threaded section and the second threaded section, each of the rotating rods includes a third bevel gear, and the third bevel gear is connected to the first bevel gear respectively. The gear and the second bevel gear are meshed with each other so that the rotating rod can rotate in conjunction with the first driving rod and the second driving rod.

The following examples illustrate the possible implementation of the present invention, but are not intended to limit the scope of protection of the present invention. The "one" or "at least one" before the nouns mentioned in the text do not limit the number. It can also be "plural" according to the needs, and the change in the number is also within the scope of protection, which will be described first.

Please refer to FIG. 1 to FIG. 9 and FIG. 4A , which show a preferred embodiment of the present invention. The positioning device of the present invention includes a base 10 , a clamping component 20 and an adjusting component 30 .

The base 10 includes a plurality of perforations 11 and a chute 12 extending along a first direction L1; the clamping assembly 20 is disposed in the chute 12, and the clamping assembly 20 includes a first clamping block 21 and a first clamping block 21. Two clamping blocks 22, the first clamping block 21 and the second clamping block 22 can move relative to each other along the first direction L1 between a locking position and a releasing position, and move relative to at least one of the through holes 11; the adjustment component 30 includes a first driving rod 31, a second driving rod 32 and at least one rotating rod 33, the at least one rotating rod 33 is rotatably arranged on the base 10, the first driving rod 31 and the second driving rod 32 are respectively rotatably arranged in the chute 12, the first driving rod 31 includes a first threaded segment 311 and a first bevel gear 312, and the second driving rod 32 includes a second threaded segment 321 and a first Two bevel gears 322, the first clamping block 21 and the second clamping block 22 are respectively arranged (screwed) on the first threaded section 311 and the second threaded section 321, and each rotating rod 33 includes a third umbrella bevel gear 331, the third bevel gear 331 meshes with the first bevel gear 312 and the second bevel gear 322 respectively so that the rotating rod 33 can drive the first driving rod 31 and the second driving rod 31 The rod 32 turns. In this embodiment, the helical directions of the first thread segment 311 and the second thread segment 321 are opposite. Thereby, fast and repeated disassembly and installation of the positioning fixture or clamping workpiece 70 are provided; and, the first driving rod 31 and the first clamping block 21, the second driving rod 32 and the second clamping block 22 are screwed together respectively. It is connected to provide surface-to-surface contact combination, so that the first clamping block 21 and the second clamping block 22 are relatively stably moved and positioned with an average force. In addition, it can be replaced according to requirements, such as output torque, driving force, displacement speed of the first clamping block 21 and the second clamping block 22, or load levels of the first driving rod 31 and the second driving rod 32. The gear ratio between the third bevel gear 331 and the first bevel gear 312 and the second bevel gear 322, or replace the first bevel gear 312, the second bevel gear 322 and the different shapes At least one of the third bevel gears 331 is used to enhance the diversity of use.

Each of the through holes 11 extends along an axial direction, and the axial direction is transverse to the first direction L1. The plurality of through holes 11 are at least partially disposed at corners of the slide groove 12. The first clamping block 21 includes at least one first locking portion. 211, the second clamping block 22 includes at least one second latching portion 221; when the first clamping block 21 and the second clamping block 22 are respectively in the locked position, each of the first latching portion 211 and each of the The second locking part 221 respectively protrudes into one of the through holes 11 and is used to be locked into the concave groove 41 of the bolt rod 40 in the through hole 11; In the release position, each of the first latching portions 211 and each of the second latching portions 221 are respectively in the concave groove 41 for disengaging from the bolt rod 40 . In this embodiment, the first clamping block 21 includes two first locking portions 211, and the first clamping block 21 is on the side away from the first bevel gear 312 and transverse to the first direction L1. The corners of the two opposite sides are respectively provided with a said first locking part 211; One side and the opposite corners of the two sides transverse to the first direction L1 are each provided with a second locking portion 221; The active force in the first direction L1 is engaged in the groove 41 of the bolt rod 40 to resist the reaction force in the first direction L1 to stabilize the positioning. Furthermore, the first clamping block 21 and the second clamping block 22 are respectively used to fasten a plurality of the bolt rods 40 .

Each of the first latching portion 211 and each of the second latching portions 221 is respectively provided with an arc concave surface 23 facing one of the through holes 11 . Each of the first latching portion 211 and each of the second latching portions 221 is wedge-shaped and each further includes a first inclined surface 24 and a second inclined surface 25 on opposite sides of the axial direction. The arc concave surface 23 Located between the first inclined surface 24 and the second inclined surface 25, the first inclined surface 24 and the second inclined surface 25 gradually approach the direction of the arc concave surface 23; in this embodiment, the first inclined surface 24 And the second inclined surface 25 is arc concave respectively, specifically, the first inclined surface 24 and the second inclined surface 25 can abut against the opposite two inclined wall surfaces 43 of the concave groove 41 in the axial direction, and the arc concave surface 23 can correspond to (or abut against) the peripheral surface 42 of the bottom ring of the groove 41; thus, it can be closely matched with the bolt rod 40 of different sizes. For example, the bolt rod has different depths, heights or curvatures. The concave groove on the peripheral surface of the bottom ring.

The first bevel gear 312 and the second bevel gear 322 are spaced opposite to each other in the first direction L1, and the third bevel gear 331 of the at least one rotating rod 33 meshes with the first bevel gear 312 and the second bevel gear 322. between the second bevel gears 322 . Preferably, the adjusting assembly 30 includes a plurality of rotating rods 33, and the third bevel gear 331 of each rotating rod 33 is located between the first bevel gear 312 and the second bevel gear 322, and meshes with each other The first bevel gear 312 and the second bevel gear 322 are different (opposite in this embodiment). At least two rotating rods 33 are coaxially arranged, the first driving rod 31 and the second driving rod 32 are coaxially arranged, the first driving rod 31 and the second driving rod 32 are arranged in line in the first direction L1, at least two The rotating rods 33 are arranged in a row transverse to the first direction L1. In this way, it can be operated in multiple directions to facilitate adjustment, and the first bevel gear 312 and the second bevel gear 322 can rotate synchronously and stably without relative deflection.

The base 10 further includes a first shaft hole 13 and a stopper 14, the first shaft hole 13 communicates with the chute 12 and an outside, the adjustment assembly 30 further includes a shaft 34, the shaft 34 passes through the The first shaft hole 13 and at least one of the first driving rod 31 and the second driving rod 32, at least one of the first driving rod 31 and the second driving rod 32 can rotate relative to the shaft 34, the stopper The component 14 covers the first shaft hole 13 and is located between the outer part and the slide groove 12 . In this embodiment, the blocking member 14 is a set screw locked in the first shaft hole 13 , which is convenient for disassembly and assembly of the shaft member 34 . Preferably, the base 10 further includes a second shaft hole 16, the second shaft hole 16 is coaxially arranged with the first shaft hole 13 and respectively arranged on two opposite sides of the slide groove 12, and the shaft member 34 passes through The first driving rod 31 , the second driving rod 32 and the second shaft hole 16 are provided so that the first driving rod 31 and the second driving rod 32 are arranged coaxially and rotate stably.

The positioning device further includes at least one position-limiting component 60, and the base 10 further includes at least one accommodation hole 15 extending along a second direction L2. L2 is transverse to the first direction L1, the at least one rotating rod 33 is rotatably arranged in the at least one receiving hole 15, each of the limiting components 60 includes a limiting member 61 and a washer 62, the at least one limiting The member 61 is detachably arranged at the end of the at least one receiving hole 15 away from the sliding groove 12, the at least one rotating rod 33 can be locked against the at least one limiting member 61 in the second direction L2, and the washer 62 It abuts between the limiting member 61 and the rotating rod 33 . In this embodiment, the limiting member 61 is a C-shaped buckle, the spacer 62 is a washer, and one end of each of the rotating rods 33 corresponding to the washer is provided with a joint portion 332, and the joint portion 332 is used for a tool to be combined. In this embodiment, the joint portion 332 is a multi-angle hole, further illustrating that the tool can be directly combined with the multi-angle hole through the C-shaped buckle and the washer. In addition, the base 10 includes two receiving holes 15 , the two receiving holes 15 are arranged at intervals in the second direction L2 , and each of the rotating rods 33 is disposed in one of the receiving holes 15 . Therefore, each of the rotating rods 33 can be prevented from moving away from the third bevel gear 331 in the second direction L2, and each of the rotating rods 33 can be prevented from being separated from the first driving rod 31 and the second driving rod. 32 meshed. The C-shaped buckle can be elastically contracted or expanded to facilitate assembly and disassembly.

In this embodiment, an outer diameter of the first bevel gear 312 is larger than an outer diameter of the first threaded section 311, and the first bevel gear 312 and the first threaded section 311 are along a first center The first bevel gear 312 is arranged on the axis A1, and the first bevel gear 312 includes a bottom 313 on the first central axis A1 and a plurality of first tooth portions 314, and the plurality of first tooth portions 314 are arranged around the first central axis A1 on the The bottom 313 protrudes axially in a direction away from the bottom 313. The plurality of first teeth 314 and the bottom 313 define a recessed space 315. Each of the first teeth 314 includes a first tapered surface 316, a The second tapered surface 317, two oblique contact surfaces 318 and an external tooth surface 319, the first tapered surface 316 radially tapers toward the recessed space 315, and the second tapered surface 317 moves axially away from the bottom 313 Tapering, the first tapered surface 316 is transverse to the second tapered surface 317, the outer tooth surface 319 and the second tapered surface 317 are located on opposite sides in the radial direction, and the outer tooth surface 319 is located radially away from On one side of the recessed space 315, the outer tooth surface 319 is axially tapered away from the bottom 313, and the two oblique contact surfaces 318 are arranged on opposite sides in the circumferential direction and are respectively arranged on the first tapered surface 316. , Between the second tapered surface 317 and the outer tooth surface 319 ; wherein, the structure of the second driving rod 32 is the same as that of the first driving rod 31 . Each of the rotating rods 33 defines a second central axis A2, each of the rotating rods 33 includes a plurality of second teeth 35, and the plurality of second teeth 35 are arranged around the second central axis A2, and each of the second teeth 35 includes A helical tooth surface 351, two abutment surfaces 352, an extension surface 353 and a radially extending end surface 354, the helical tooth surface 351 is located between the end surface 354 and the extension surface 353, the extension surface 353 is on the shaft Tapered upward toward the direction of the helical tooth surface 351 , the helical tooth surface 351 is a quadrangle, the helical tooth surface 351 tapers from the extension surface 353 toward the direction of the end surface 354 and gradually approaches the second central axis A2, the helical tooth surface 351 gradually tapers toward the second central axis A2, and The two abutting surfaces 352 are disposed on two opposite sides in the circumferential direction and are respectively connected between the extending surface 353 , the helical tooth surface 351 and the end surface 354 . One of the abutting surfaces 352 can abut against one of the oblique abutting surfaces 318 of one of the first tooth portions 314 in the circumferential direction; thereby each of the rotating rods 33 can smoothly drive the first driving rod 31 and the first driving rod 31 At least one of the second driving rods 32 rotates. The first central axis A1 intersects the second central axis A2. In addition, in other embodiments, each of the first teeth and each of the second teeth may be V-shaped or trapezoidal respectively.

The opposite ends of the first driving rod 31 and the second driving rod 32 respectively lean against the peripheral wall of the chute 12 to prevent the first driving rod 31 and the second driving rod 32 from being rotated by the at least one When the rod 33 is driven to rotate, it is relatively far away.

The positioning device further includes a plurality of positioning rings 50, the plurality of positioning rings 50 are respectively arranged in the plurality of through holes 11, and a circumferential wall 52 of each positioning ring 50 is provided with a through groove 51, and the through groove 51 communicates with the set through holes. 11 and the chute 12, each of the first latching portion 211 and each of the second latching portions 221 can respectively pass through the through groove 51 of one of the positioning rings 50, specifically, the hardness of each of the positioning rings 50 Relatively larger than each of the through holes 11 , it can be made of metal or plastic, so as to avoid wear of the plurality of through holes 11 . In addition, each of the positioning rings 50 is detachably disposed in one of the through holes 11 for replacement.

In use, rotate the at least one rotating rod 33 to synchronously rotate the first driving rod 31 and the second driving rod 32 to drive the relative movement of the first clamping block 21 and the second clamping block 22 to lock at least one The bolt 40 positions or releases at least one bolt 40 .

10: Base 11: perforation 12: Chute 13: The first shaft hole 14: block 15: Hole 16: Second shaft hole 20: clamping components 21: The first clamping block 211: the first locking part 22: Second clamping block 221: The second locking part 23: arc concave 24: first bevel 25: second slope 30: Adjustment components 31: The first driving rod 311: the first thread segment 312: First bevel gear 313: bottom 314: the first tooth 315: concave space 316: the first cone 317: second cone surface 318: Inclined face 319: External tooth surface 32: Second drive rod 321: Second thread segment 322: second bevel gear 33:Turning rod 331: The third bevel gear 332: junction 34: Shaft 35: Second gear 351: helical tooth surface 352: abutment surface 353: extended surface 354: end face 40: Bolt 41: Groove 42: Circumferential surface of bottom ring 43: Inclined wall 50: positioning ring 51: Through groove 52: Circumferential wall 60: limit component 61: Limiting parts 62: Gasket 70: Clamping the workpiece L1: the first direction L2: the second direction A1: First central axis A2: Second central axis

Fig. 1 is a perspective view of a preferred embodiment of the present invention. Fig. 2 is a perspective view of a preferred embodiment of the present invention combined with a clamping workpiece. Fig. 3 is an exploded view of a preferred embodiment of the present invention. Fig. 4 is a sectional view of a preferred embodiment of the present invention. FIG. 4A is a partially enlarged view of FIG. 4 . Fig. 5 is a cross-sectional exploded view of a preferred embodiment of the present invention. 6 is an exploded cross-sectional view of a first clamping block and a second clamping block at a release position according to a preferred embodiment of the present invention. 7 is an exploded cross-sectional view of a first clamping block and a second clamping block in a locked position according to a preferred embodiment of the present invention. Fig. 8 is a perspective view of a first driving rod in a preferred embodiment of the present invention. Fig. 9 is a perspective view of a rotating rod in a preferred embodiment of the present invention.

10: Base

33:Turning rod

40: Bolt

Claims (10)

A positioning device, comprising: a base, including a plurality of perforations and a chute extending along a first direction; A clamping component is arranged in the chute, including a first clamping block and a second clamping block, and the first clamping block and the second clamping block can move relative to each other along the first direction to a locking position and movement relative to at least one of the perforations between a release position; and An adjustment assembly includes a first driving rod, a second driving rod and at least one rotating rod, the at least one rotating rod is rotatably arranged on the base, and the first driving rod and the second driving rod are respectively rotatable The ground is located on the chute, the first driving rod includes a first threaded section and a first bevel gear, the second driving rod includes a second threaded section and a second bevel gear, the first clamping block and the second clamping block is respectively arranged on the first threaded section and the second threaded section, each of the rotating rods includes a third bevel gear, and the third bevel gear is connected with the first bevel gear and the first bevel gear respectively. The two bevel gears are meshed with each other so that the rotating rod can drive the first driving rod and the second driving rod to rotate. The positioning device according to claim 1, wherein the first bevel gear and the second bevel gear are arranged opposite to each other in the first direction, and the third bevel gear of the at least one rotating rod meshes with the second bevel gear. Between a bevel gear and the second bevel gear. The positioning device according to claim 2, wherein the adjustment assembly includes a plurality of the rotating rods, and the third bevel gear of each of the rotating rods is located between the first bevel gear and the second bevel gear, and respectively meshed with the first bevel gear and the second bevel gear. The positioning device as claimed in claim 1, wherein each of the perforations extends along an axial direction, the axial direction is transverse to the first direction, the plurality of perforations are at least partly provided at the corners of the slide groove, and the first clamping block includes at least A first locking part, the second clamping block includes at least one second locking part; when the first clamping block and the second clamping block are respectively in the locking position, each of the first locking part and each of the The second locking part protrudes into one of the through holes respectively and is used to be locked into a groove of a bolt in the through hole; when the first clamping block and the second clamping block are respectively in the release position, each of the The first latching portion and each of the second latching portions are respectively in the groove for disengaging from the bolt rod. The positioning device according to claim 4, wherein each of the first latching portion and each of the second latching portions is provided with an arc concave surface facing one of the through holes. The positioning device as described in claim 5, wherein each of the first locking parts and each of the second locking parts are wedge-shaped and each further includes a first inclined surface and a first inclined surface on two opposite sides of the axial direction. Two inclined surfaces, the arc concave surface is arranged between the first inclined surface and the second inclined surface, and the first inclined surface and the second inclined surface gradually approach toward the arc concave surface. The positioning device as described in claim 4, further includes a plurality of positioning rings, the plurality of positioning rings are respectively arranged in the plurality of through holes, and a through groove is formed on the peripheral wall of each of the positioning rings, and the through groove communicates with the set through holes And the chute, each of the first locking part and each of the second locking parts can respectively pass through the through groove of one of the positioning rings. The positioning device according to claim 1, wherein the base further includes a first shaft hole and a stopper, the first shaft hole communicates with the chute and an outside, and the adjustment assembly further includes a shaft, the shaft Through the first shaft hole and at least one of the first driving rod and the second driving rod, at least one of the first driving rod and the second driving rod can rotate relative to the shaft, and the stopper cover The first shaft hole is located between the outside and the sliding slot. The positioning device as described in Claim 1 further includes at least one limiting component, and the base further includes at least one accommodation hole extending along a second direction, each of the accommodation holes communicates with the chute and an outside world, and the second The direction is transverse to the first direction, the at least one rotating rod is rotatably arranged in the at least one receiving hole, each of the limiting components includes a limiting member and a gasket, and the at least one limiting member is detachably arranged in the The at least one accommodation hole is away from one end of the chute, the at least one rotating rod can be locked against the at least one limiting member in the second direction, and the gasket is abutted between the limiting member and the rotating rod . The positioning device according to claim 5, wherein the first clamping block includes two first locking parts, and the first clamping block is on the side away from the first bevel gear and transverse to the first direction The corners of the two opposite sides are respectively provided with a said first latching portion; the second clamping block includes two said second latching portions, and the second clamping block is on the side away from the second bevel gear and transverse to The corners on the opposite sides of the first direction are each provided with a second locking portion; the helical directions of the first threaded section and the second threaded section are opposite; the first bevel gear and the second bevel gear The third bevel gear of the at least one rotating rod is arranged opposite to each other in the first direction, and the third bevel gear is engaged between the first bevel gear and the second bevel gear; the adjustment assembly includes a plurality of the rotating rods, each The third bevel gear of the rotating rod is located between the first bevel gear and the second bevel gear, and meshes with the first bevel gear and the second bevel gear respectively; at least two of the bevel gears The rotating rods are coaxially arranged, the first driving rod and the second driving rod are coaxially arranged, the first driving rod and the second driving rod are arranged in the first direction, at least two of the rotating rods are transverse to the first Arranged in the direction; the positioning device also includes a plurality of positioning rings, the plurality of positioning rings are respectively arranged in the plurality of through holes, and a through groove is formed on the peripheral wall of each of the positioning rings, and the through groove communicates with the set through hole and the set. Slide slots, each of the first locking part and each of the second locking parts can pass through the through groove of one of the positioning rings; the base also includes a first shaft hole and a stopper, the first shaft The hole communicates with the chute and an outside world, and the adjustment assembly further includes a shaft member, the shaft member passes through the first shaft hole and at least one of the first drive rod and the second drive rod, the first drive rod and the second drive rod At least one of the second driving rods can rotate relative to the shaft, and the stopper covers the first shaft hole and is located between the outside and the slide groove; the base further includes a second shaft hole, the second The shaft hole is arranged coaxially with the first shaft hole and is respectively arranged on two opposite sides of the chute, and the shaft passes through the first driving rod, the second driving rod and the second shaft hole; the positioning device also includes At least one position-limiting component, the base further includes at least one accommodation hole extending along a second direction, each of the accommodation holes communicates with the chute and an outside world, the second direction is transverse to the first direction, and the at least one rotation The rod is rotatably arranged in the at least one accommodating hole, each of the limiting components includes a limiting member and a gasket, and the at least one limiting member is detachably arranged in an end of the at least one accommodating hole away from the chute , the at least one rotating rod can be locked against the at least one limiting member in the second direction, and the gasket is abutted between the limiting member and the rotating rod; the limiting member is a C-shaped buckle, the The spacer is a washer, and one end of each of the rotating rods corresponding to the washer is provided with a joint part, and the joint part is used for a tool to be combined; the base includes two receiving holes, and the two receiving holes are arranged at intervals in the second direction, Each of the rotating rods is arranged in one of the receiving holes.

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