TWM633904U - Positioning device and its driving mechanism - Google Patents

Abstract

This work relates to a positioning device and its driving mechanism. The positioning device is provided with shafts with different rod diameters, a limit rod and a limit body on the shaft seat, which can be used for accommodating space in the sleeve of the drive mechanism, The shaft hole assembly is placed on the shaft, the limit rod and the limit body, and the pressing unit is movably assembled in the accommodating space of the sleeve, and the bottom of the pressing unit is equipped with an inner chute for the movement of the limit body and the limit rod Sliding through, then at least one side or more of the inner chute is provided with a through hole penetrating outwards and a positioning piece is pierced, so that the positioning piece can move axially along the limiter, that is, at least one or one The radial displacement in the above-mentioned through hole is clamped or withdrawn from the limit rod. There is an elastic part that moves back and forth between the bottom of the pressing unit and the accommodation space, so as to achieve the locking or separation of the pressing drive mechanism and the shaft seat. purpose.

Description

Positioning device and its driving mechanism

This creation provides a positioning device and its driving mechanism, especially a positioning device and its driving mechanism that combines two plates by pressing. It is assembled on the preset first plate with a shaft seat, and then the sleeve of the driving mechanism is assembled on the preset Set up the second plate, and assemble the sleeve and pressing unit of the drive mechanism on the shaft seat, and achieve the purpose of positioning or separating the preset first and second plates by operating the pressing unit.

Press, in general, many items in daily life will be applied to positioning mechanisms such as screws or bolts during the stroke of moving back and forth to achieve the positioning effect. For example, items with telescopic structures such as drawers and cabinet panels use screws or The pin allows the slide rail and the chute to move to the predetermined position, forming a temporary positioning for the user to perform work while the slide rail and the chute are positioned and not moving; or such as desktop computers, notebook computers, industrial computers, Working machines and other equipment assembled by multiple devices and mechanisms will use screws or pins to position the plates and plates in a stacked state, so that the outer shell of the mechanism is equipped with a plate that can be assembled and disassembled freely, or It is to allow multiple devices and mechanisms to be relatively assembled or disassembled conveniently.

Furthermore, except for the tip and thread of ordinary screws and bolts, users will be injured if they touch them unintentionally, and when disassembling each device, mechanism or plate, the screw or bolt needs to be disassembled as a whole. Just often run into the problem that screw or latch loses, and the user If there are no spare screws and pins, then the remaining screws or pins are used for assembly, resulting in an unstable combination of the assembled mechanism and plates, which is easy to loosen and disengage; In the same position, it is impossible to find the corresponding screws or pins for assembly and fixing; moreover, when disassembling screws or pins, most of them need to use hand tools (such as screwdrivers or wrenches, etc.) to operate. The types of pins are different, and users need to prepare a lot of hand tools, and the assembly and disassembly operations are often not smooth. Due to the above-mentioned problems and defects in actual use, the boards are stacked with screws or pins. There is a very inconvenient lack in positioning.

The applicant of this case filed a new patent application on November 9, 1999 for "Structure Improvement of Positioning Device", application number No. 99221678, and received the certificate and announced it in the Patent Gazette on May 11, 2000. Certificate No. M402972, please refer to Figures 11 and 12. The positioning device is provided with an accommodation groove A1 on the side of the inner through hole A0 of the base A, and uses the through hole A0 for the positioning of the positioning rod group B. The rod B1 is pierced, and one side of the positioning rod B1 is provided with a piercing body B11, and the outer edge of the positioning rod B1 near the piercing body B11 is protrudingly provided with a stop ring B12, and the stop ring B12 is extended to the other side. There is a sliding rod body B13, and the outer edge of the sliding rod body B13 is cut along the axial direction with two opposite long trimming sides B14, that is, a concave ring groove B15 is provided in the middle section of the sliding rod body B13, and the sliding The other side of the rod body B13 is provided with an inner screw hole B16 facing inward, and an elastic body B2 is provided outside the sliding rod body B13, so that one side of the elastic body B2 can resist the stop ring B12 of the positioning rod B1, and the elastic The other side of the body B2 is against the side of the limiting body B3, and the limiting body B3 is fixed in the accommodation groove A1 of the base A, and a rectangular groove-shaped limiting hole B30 is provided inside the limiting body B3 , the inside of the limit hole B30 has two opposite contraction side edges B31, which can be used for the two side contraction side edges B31 of the position limiter B3 to move and expand the movement of the long trimming sides B14 of the sliding rod body B13 of the positioning rod B1. The inner screw hole B16 on the side of the sliding rod body B13 is used for the screw B on the side of the rod head B4 41 is locked so that the rod head B4 is exposed outside the base A, and the rod head B4 can be used to pull the positioning rod B1 to shrink into the through hole A0, so that the insertion body B11 on one side of the positioning rod B1 shrinks into the through hole A0 , and the stop ring B12 pushes the elastic body B2 to compress the limiter B3, so that the sliding rod B13 can slide in the limit hole B30 of the limiter B3, when the concave ring groove B15 aligns with the limiter When the B3 position is reached, the rod head B4 can be rotated to drive the positioning rod B1 to rotate, and the long trimming edge B14 on both sides of the sliding rod body B13 is turned to the shrinking side edge B31 on both sides of the limiter B3 in a misplaced manner to stagger the sliding rod The body B13 is clamped at the limiting body B3; and the rod head B4 can be rotated again to drive the sliding rod body B13 to rotate so that the long trimming sides B14 on both sides are turned to the two shrinking side edges of the positioning limiting body B3 B31, and through the elastic restoring force of the elastic body B2, the positioning rod B1 can be moved to the outside of the through hole A0 of the base A, so that one side of the positioning rod B1 passes through the body B11 to expose the outside of the base A.

However, the limiting body B3 of the previous proposal is fixed in the accommodation groove A1 of the base A, and it is not easy to detect the space between the shrinking side edges B31 on both sides of the limiting body B3 and the long trimming edges B14 on both sides of the sliding rod body B13 In the state of alignment or misalignment, when rotating the rod head B4 in conjunction with the positioning rod B1 to rotate, it is necessary to distinguish the alignment of the long trimming edge B14 on both sides of the sliding rod body B13 and the second shrinking side edge B31 of the limiter B3 according to the hand feeling , forming a blind spot during use, which is not conducive to the operation of the positioning device; and the positioning rod B1 is sleeved with an elastic body B2 on the outside of the sliding rod body B13, and then rotates on the grasping rod head B4 and links the sliding rod of the positioning rod B1 When the body B13 moves in the limiting hole B30 of the limiting body B3, it is affected by the resistance of the elastic body B2, which easily forms unstable states such as shaking and yaw of the positioning rod B1, and rotates the rod head B4 to provide a sliding rod. When the long trimming sides B14 on both sides of the body B13 are in alignment with the two shrinkage side edges B31 of the limiting body B3, the elastic body B2 will push the positioning rod B1 to the outside of the through hole A0 of the base A with a rebound force, so that the caught The gripping head B4 suddenly jumps out of the grasping fingers, causing the head B4 to hit the base A, and directly collides with the base A and the limiter B3. It is more likely to cause the base A to be skewed for a long time, and also make the positioning rod B1 Cannot go directly out of base A no It is easy to align the positioning hole C0 on the board C, which is not conducive to the combination and fastening between the two boards C, that is, there are some defects in the actual application of the fixing device.

Therefore, how to solve the problems and problems of inconvenient application and operation of the current positioning device, and is not conducive to the trouble and lack of assembly and positioning between the two plates, is the direction that relevant manufacturers engaged in this industry want to study and improve. By.

Therefore, in view of the above-mentioned problems and deficiencies, the creators collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous creation and modification, they designed this positioning device and its driver. A new type of patent for the institution is born.

The main purpose of this creation is that the positioning device is equipped with shaft rods with different rod diameters, limit rods and limit bodies on the shaft seat, which can be used for the accommodation space in the sleeve of the drive mechanism and the assembly and penetration of the shaft hole. The pressing unit is movably assembled at the shaft rod, the limiting rod and the limiting body, and in the accommodation space of the sleeve, and the bottom of the pressing unit is provided with an inner chute for the movable sliding of the limiting body and the limiting rod. Then at least one side or more of the inner chute is provided with a through hole penetrating outwards and a positioning piece is pierced so that the positioning piece can move axially along the limiter, that is, in at least one or more than one of the through holes The radial displacement is clamped or retreated from the limit rod. There is an elastic part that moves back and forth between the bottom of the pressing unit and the accommodating space, so as to achieve the purpose of locking or separating from the shaft seat by pressing the driving mechanism. The preset first and second boards can be quickly aligned and locked or separated.

Another purpose of this creation is that the bottom of the shaft seat is provided with a base that can be fixed in the first positioning hole of the preset first plate, and the shaft rods with different rod diameters and the limit position are sequentially protruded from the center of the top of the base. Rod and limit body, the diameter of the shaft is larger than the diameter of the limit rod and the limit body, and the outer diameter of the limit body is larger than the diameter of the limit rod, and the bottom of the limit body is provided with a third A leading slope facing the limit The positioning rod extends obliquely, and a second guiding inclined surface is provided on the other side of the limiting body relative to the first guiding inclined surface, which is tapered and extends outward.

Another purpose of this creation is that the driving mechanism is assembled in the accommodating space of the sleeve. The pressing unit includes the release key base, the press base, the first elastic body and the second elastic body of the elastic part. There is a sliding space for the movable insertion of the pressing seat, and the bottom edge can be supported by the first elastic body on one side, and a through hole penetrating outward is provided on one side of the sliding space, and a guiding slope that shrinks inward is provided on the other side , relative to the sliding space, there is a sliding hole with a reduced aperture on the other side of the guiding slope, and the pressing body of the pressing seat penetrates the through hole of the sliding space, and the sliding body on one side of the pressing body is located in the sliding space and slides freely in the sliding hole. The bottom surface of the sliding body is for one side of the second elastic body to resist, and the adjacent position of the pressing body and the sliding body is provided with a resisting shoulder to resist the inner side of the through hole, and an inner chute is provided inside the pressing seat for limiting For the sliding displacement of the position body and the limit rod, at least two opposite sides of the inner chute are respectively provided with through-holes penetrating outward laterally, and ball-shaped positioning pieces are movable in each through-hole, and the volume of each positioning piece is respectively Exposing each through hole along the sliding space, guiding slope, sliding displacement at the sliding hole and radial (ie horizontal and transverse) displacement at each through hole to enter and exit the inner chute, and sliding displacement along the limit body to enter and exit the limit Position bar, for the state of clamping or disengaging between the driving mechanism and the shaft seat.

Another purpose of this creation is that the outer edge of the bottom of the release key base is provided with a socket for one side of the first elastic body to be inserted and resisted, and the bottom surface of the accommodating space of the sleeve is provided with a first shoulder for the first elastic The other side of the body resists, and along the first shoulder to one side is provided with an accommodation groove with a reduced aperture, then a second shoulder is provided on the inner edge of the accommodation groove for the second elastic body to resist on the other side, and then on the second There is a through-type shaft hole on the other side of the shoulder.

Another purpose of this creation is that the driving mechanism is provided with a fitting part at the bottom of the sleeve, which can be fixed at the second positioning hole of the preset second plate, and a supporting ring is provided on the other side of the sleeve opposite the fitting part. The edge protrudes toward the accommodating space, and an outer shoulder edge is provided on the outside of the release key base to abut against the holding ring edge to form a limit.

1: shaft seat

11: base

111: docking part

12: shaft

13: limit rod

14: limit body

141: The first guide slope

142: the second guide slope

2: Driving mechanism

21: Sleeve

210:Accommodating space

211: shaft hole

212: First shoulder

213: storage tank

214: second shoulder

22: Fitting part

23: Against the rim

3: Press unit

30: inner chute

301: through hole

31: Positioning piece

32: elastic part

321: first elastomer

322: Second elastic body

33:Release the key base

330: sliding space

331: through hole

332: guide bevel

333: sliding hole

334: Socket

335: Outer shoulder edge

34: Press seat

341: pressing body

342: sliding body

343: Hold shoulder

4: The first plate

40: The first positioning hole

5: Second plate

50: The second positioning hole

A: base

A0: Through hole

A1: storage tank

B: positioning rod group

B1: positioning rod

B11: Penetrating body

B12: stop ring

B13: sliding rod body

B14: Long trimming

B15: concave ring groove

B16: Inner screw hole

B2: Elastomer

B3: limit body

B30: limit hole

B31: Shrink side edge

B4: club head

B41: screw

C: plate

C0: positioning hole

[Picture 1] is a three-dimensional appearance diagram created for this work.

[Picture 2] is a three-dimensional exploded view created for this work.

[Picture 3] is a three-dimensional exploded view of another direction of this creation.

[Figure 4] is a side view sectional view of this creation.

[Fig. 5] is a side view sectional view (1) of the pressing action of this creation.

[Picture 6] is a side view sectional view (2) of the pressing action of this creation.

[Fig. 7] is a side view sectional view (3) of the pressing action of this creation.

[Figure 8] is a side view sectional view of this creation after the pressing action.

[Picture 9] is a side view sectional view of this creation when it is unlocked.

[Picture 10] is a side view section view of this creation after unlocking.

[Fig. 11] is a three-dimensional exploded view of a conventional fixing device.

[Fig. 12] is a side sectional view of a conventional fixing device.

In order to achieve the above-mentioned purpose and effect, the technical means adopted in this creation, its structure, and the method of implementation, etc., are hereby drawn to illustrate in detail the characteristics and functions of the preferred embodiment of this creation as follows, so as to fully understand it.

Please refer to Figures 1, 2, 3, and 4, which are three-dimensional appearance drawings of this creation, The three-dimensional exploded view, the three-dimensional exploded view in the other direction, and the side-view sectional view can be clearly seen from the figures, the inventive positioning device and its driving mechanism, wherein:

The positioning device includes a shaft seat 1 and a drive mechanism 2 assembled on the base 11. The shaft seat 1 is located at the center of the base 11, and is provided with shafts 12 and limit rods 13 with different diameters in sequence, and A limiting body 14 is provided on the other side of the limiting rod 13 opposite to the shaft rod 12 .

The driving mechanism 2 is assembled on the shaft seat 1, and the pressing unit 3 is movably assembled at the sleeve 21, and the inside of the sleeve 21 has an accommodating space 210 recessed inward, which can accommodate the pressing unit 3, and the sleeve 21 can accommodate the pressing unit 3. The accommodating space 210 of the cylinder 21 is provided with a shaft hole 211 penetrating to the other side, which can be used for the shaft rod 12 and the limit rod 13 of the shaft seat 1 to pass through, and the bottom of the pressing unit 3 is provided with an inner chute 30 for limit. The position body 14 and the limit rod 13 are movable and slippery, and at least one side or more of the inner chute 30 is provided with a through hole 301 penetrating outward, and at least one or more than one through hole 301 is pierced with a ball The shape of the positioning part 31 can move up and down axially along the limit body 14, that is, it can be radially displaced in at least one or more than one through hole 301 and can be clamped or retreated from the limit rod 13, and the bottom of the pressing unit 3 An elastic portion 32 that moves back and forth is provided between the accommodating space 210 of the sleeve 21 .

The base 11 is provided at the bottom of the above-mentioned shaft seat 1, and the base 11 is provided with a docking part 111 at the bottom, which can be fixed in the first positioning hole 40 of the preset first plate 4, and at the center of the top of the base 11, there are sequentially protruding Shaft rod 12, stop rod 13 and stop body 14 with different rod diameters, the rod diameter of the shaft rod 12 is larger than the rod diameter of the stop rod 13 and the stop body 14, and the outer diameter of the stop body 14 is larger than The rod diameter of the limiting rod 13, and the bottom of the limiting body 14 is provided with a first inclined surface 141 extending obliquely towards the limiting rod 13, and a second inclined surface is provided on the other side of the limiting body 14 relative to the first inclined surface 141 142 tapers outwardly.

And the above-mentioned driving mechanism 2 is a pressing unit 3 that can be assembled in the accommodating space 210 of the sleeve 21. The elastic body 321 and the second elastic body 322, the inside of the release key base 33 is provided with a sliding space 330 for the pressing seat 34 to move through, and the bottom edge can be used for the first elastic body 321 to resist on one side, and in the sliding space 330 One side is provided with a through hole 331 penetrating outward, and the other side is provided with a guide inclined surface 332 shrinking inwardly. Relative to the sliding space 330, a sliding hole 333 for reducing the aperture diameter is provided on the other side of the guide inclined surface 332, and the pressing seat 34 is provided with a pressing The body 341 penetrates the through hole 331 of the sliding space 330, and the side of the pressing body 341 is connected with a sliding body 342 located in the sliding space 330 and sliding hole 333 to move and slide. The bottom surface of the sliding body 342 is for the second elastic body 322 to move. and the adjacent position of the pressing body 341 and the sliding body 342 is provided with a resisting shoulder 343 which can be resisted on the inner side of the through hole 331, and an inner chute 30 is provided inside the pressing seat 34 for the position limiting body 14 and the limiting body 342. When the position rod 13 slides and moves, at least two opposite sides of the inner chute 30 are respectively provided with through holes 301 that penetrate outwards in a transverse direction. In each through hole 301, a ball-shaped positioning piece 31 is movable respectively, and each positioning piece 31 is partially The spheres are respectively exposed outside the through holes 301, slide and displace along the sliding space 330, the guide slope 332, and the sliding hole 333, and move radially (ie, horizontally and laterally) in and out of the inner chute 30 at each through hole 301, and move along the The second guide slope 142 and the first guide slope 141 of the limit body 14 slide and move in and out of the limit rod 13, so that the driving mechanism 2 and the shaft seat 1 can form a locked or disengaged state.

In addition, the outer edge of the bottom of the release key base 33 is provided with a sleeve portion 334, which can be used for one side of the first elastic body 321 to be inserted into the sleeve portion 334 to form resistance, and the bottom surface of the accommodating space 210 of the sleeve 21 is provided with The first shoulder 212 is supported by the other side of the first elastic body 321, and along the first shoulder 212, a receiving groove 213 with a reduced aperture is provided to one side, and the inner edge of the receiving groove 213 is provided with a second shoulder 214 The other side of the second elastic body 322 is supported, and a penetrating shaft hole 211 is provided on the other side of the second shoulder 214 .

Moreover, the drive mechanism 2 is provided with a fitting part 22 at the bottom of the sleeve 21, which can be fixed at the second positioning hole 50 of the preset second plate 5, and a supporting part is provided on the other side of the sleeve 21 relative to the fitting part 22. The ring rim 23 protrudes toward the accommodating space, and is provided with an outer shoulder 335 on the outside of the release key base 33 of the pressing unit 3. Abut against the abutment ring 23 to form a limit, and prevent the release key base 33 from leaving the accommodating space 210 of the sleeve 21 , so that the pressing unit 3 can move up and down in the accommodating space 210 of the sleeve 21 .

Please refer to Figures 2, 3, 4, 5, 6, 7, 8, 9, and 10, which are the three-dimensional exploded view of this creation, the three-dimensional exploded view in the other direction, the side view section view, and the press action. Side sectional view (1), side sectional view during pressing action (2), side sectional view during pressing action (3), side sectional view after pressing action, side sectional view during unlocking, unlocking The following side view sectional view can be clearly seen from the figure, when the positioning device and its driving mechanism of the present invention are used in practice, among them:

The base 11 of the shaft seat 1 is fixed at the first positioning hole 40 of the preset first plate 4 with the docking portion 111 , and the sleeve 21 of the driving mechanism 2 is fixed at the preset second plate 5 with the fitting portion 22 At the second positioning hole 50, the preset second plate 5, the driving mechanism 2, and the pressing unit 3 can be displaced to the top of the preset first plate 4 and the shaft seat 1 at the same time, and the shaft hole 211 of the sleeve 21 For the limit body 14, the limit rod 13, and the shaft rod 12 located on the shaft seat 1, and for the limit body 14, the limit rod 13, and the shaft rod 12 to penetrate the accommodating space 210 through the shaft hole 211 of the sleeve 21 , and then penetrate the sliding hole 333 of the release key base 33, and the chute 30 inside the pressing seat 34, which can be used for the preset second plate 5 to be quickly aligned with the preset first plate 4, that is, the force will be used to move the preset second plate 4. After the plate 5 is pressed to the preset first plate 4, it presses the pressing body 341 of the pressing unit 3, so that the pressing seat 34 is pressed down and displaced longitudinally along the sliding space 330 of the release key base 33, and the pressing seat The inner chute 30 in the inner chute 34 slides down along the stop body 14 and the stop rod 13, and when the spheres of the positioning pieces 31 at the through holes 301 on both sides of the inner chute 30 slide along the position of the stop body 14 The second guide slope 142 slides, and the other side respectively abuts against the guide slope 332 of the release key base 33 to slide, so that each positioning member 31 crosses the second guide slope 142 and enters the first guide slope 141 respectively, and at the same time presses The body 341 exerts force for each positioning member 31 to slide into the sliding hole 333 of the reduced aperture along the guide slope 332, and make each positioning The components 31 are radially pushed by the sliding holes 333, so that each positioning component 31 slides along the first guide slope 141, and laterally displaces against the outer edge of the limit rod 13. At this time, the release key seat 33 is received The push of the first elastic body 321 moves to the outside of the accommodation space 210 of the sleeve 21, and the outer shoulder edge 335 abuts against the abutting ring 23 at the top of the accommodation space 210, then the pressing body 341 of the pressing seat 34 is Submerged into the through hole 331 into the sliding space 330, each positioning piece 31 is clamped at the limit rod 13 and the sliding hole 333 to form a clamping position, then the release key 33 presses against the first elastic body of the elastic part 32 321. The pressing seat 34 presses against the second elastic body 322 to achieve the purpose of locking the pressing drive mechanism 2 and the shaft seat 1, and can provide the effect of positioning the second board 5 on the first board 4.

If you want to separate the preset second plate 5 from the preset first plate 4, you can apply force to the top of the release key base 33, so that the release key base 33 is pressed down and displaced toward the accommodation space 210 of the sleeve 21, And make the internal sliding hole 333 of the release key base 33 slide down along the sliding body 342, and allow the inner guide slope 332 of the release key base 33 to slide to the outside of each positioning member 31, thereby releasing the force applied to the release key base 33, through The elastic recovery force of the first elastic body 321 of the elastic part 32 pushes the release key base 33, and the elastic recovery force of the second elastic body 322 pushes the pressing seat 34, so that each positioning member 31 can move along the first position of the limiter 14 respectively. One guide inclined surface 141 radially displaces to the relative outer side, slides into the sliding space 330 along the second guide inclined surface 142 and the guide inclined surface 332, and each positioning member 31 retreats from the stop rod 13 and moves to the top of the stop body 14, and provides The pressing body 341 of the pressing seat 34 protrudes outside the through hole 331 of the release key base 33, and the driving mechanism 2 is separated from the shaft seat 1, so that the preset second plate 5, the driving mechanism 2, and the pressing unit 3 can be separated from the shaft seat. 1. The preset first board 4 is taken out and detached, so as to facilitate the separation of the preset second board 5 from the preset first board 4 .

The above is only a preferred embodiment of this creation, and does not limit the patent scope of this creation. Therefore, all simple modifications and other modifications made by using the instructions and drawings of this creation Changes in effective structure should be included in the patent scope of this creation in the same way, and Chen Ming is hereby agreed.

To sum up, the above-mentioned positioning device and its driving mechanism of this creation can really achieve its effect and purpose when used, so this creation is a creation with excellent practicability. I have filed an application, hoping that the judging committee will approve this case as soon as possible, so as to protect the hard work of the creator. If the Junju judging committee has any doubts, please feel free to send a letter to instruct, and the creator will do its best to cooperate, and I really appreciate it.

1: shaft seat

11: base

111: docking part

12: shaft

13: limit rod

14: limit body

141: The first guide slope

142: the second guide slope

2: Driving mechanism

21: Sleeve

210:Accommodating space

22: Fitting part

23: Against the rim

3: Press unit

301: through hole

31: Positioning piece

32: elastic part

321: first elastomer

322: Second elastic body

33:Release the key base

330: sliding space

331: through hole

334: Socket

335: Outer shoulder edge

34: Press seat

341: pressing body

342: sliding body

343: Hold shoulder

Claims (9)

A positioning device includes a shaft seat and a driving mechanism, wherein: the shaft seat is provided with a shaft with different rod diameters and a limit rod, and a limit body is provided on the other side of the limit rod opposite to the shaft; and The drive mechanism is assembled on the shaft seat, and includes the shaft rod passing through the shaft seat, the sleeve on the limit rod, and the pressing unit movably assembled in the sleeve. Accommodating the accommodating space of the pressing unit, and in the accommodating space, there is a through shaft hole for the shaft rod and the limiting rod to pass through, and the bottom of the pressing unit is provided with the limiting body, the limiting rod The inner chute of the bar moves and slides, and at least one side or more than one side of the inner chute is provided with a through hole penetrating outwards, and at least one or more than one through hole is provided along the axis of the limiter. To move, that is to say radial displacement in the at least one or more than one of the through holes clamps or withdraws from the locating member at the position of the limit rod, and the elastic force for reciprocating movement is provided between the bottom of the pressing unit and the accommodating space department. The positioning device as described in claim 1, wherein the bottom of the shaft seat is provided with a base fixed on the preset first plate, and the top of the base is protruded in sequence with the shaft, the limit rod and the limit body. The positioning device as described in claim 2, wherein the top of the base protrudes from the central position with the shaft with different diameters, the limiting rod and the limiting body, and the diameter of the shaft is larger than the limiting The rod diameter of the rod and the limiting body, and the outer diameter of the limiting body is greater than the rod diameter of the limiting rod, and a first guide slope extending obliquely toward the limiting rod is provided at the bottom of the limiting body A second guide slope that tapers outwards is provided on the other side of the limiter relative to the first guide slope. The positioning device as claimed in claim 1, wherein the drive mechanism is located on the sleeve of the sleeve The press unit assembled in the accommodating space includes a release key base, a press base, the first elastic body and the second elastic body of the elastic part, and the inside of the release key base is provided with a sliding space for the press base to move through, and a bottom The edge is used for the first elastic body to resist against one side, and a through hole penetrating outward is provided on one side of the sliding space, and a guiding inclined surface shrinking inward is provided on the other side, and the sliding space is on the other side of the guiding inclined surface There is a sliding hole with a reduced aperture, and the pressing seat is provided with a pressing body at the through hole that exposes the sliding space. Sliding body, the bottom surface of the sliding body is for the side of the second elastic body to resist, and the pressing body and the adjacent position of the sliding body are provided with a resisting shoulder against the inner side of the through hole, and on the pressing seat There is an internal chute for the sliding displacement of the limiting body and the limiting rod, and at least two opposite sides of the inner chute are respectively provided with the through holes penetrating outward laterally, and the movable devices in each of the through holes The locating pieces are provided, and each of the locating pieces is in the shape of a ball. The positioning device as described in claim 4, wherein the outer edge of the bottom of the release key seat is provided with a socket portion for one side of the first elastic body to resist, and the bottom surface of the accommodating space inside the sleeve is provided with a socket for the first elastic body. The other side of the elastic body resists the first shoulder, and along the first shoulder to one side is provided with an accommodating groove with a reduced aperture, then the inner edge of the accommodating groove is provided with a The second shoulder is provided with a through-type shaft hole on the other side of the second shoulder; part of the volume of the positioning member is respectively exposed outside the through holes along the sliding space, the guiding slope, and the sliding hole. The sliding displacement is radial (that is, horizontal and transverse) displacement in and out of the inner chute at each of the through holes, and slides and moves in and out of the limiting rod along the limiting body to form locking or disengagement. The positioning device as described in claim 4, wherein the drive mechanism is provided with a fitting part fixed on the preset second plate at the bottom of the sleeve, and a fitting part is provided on the other side of the sleeve relative to the fitting part A resisting ring protrudes toward the accommodating space, and an outer shoulder edge is provided on the outside of the release key base against the resisting ring to form a limit. A driving mechanism of a positioning device, the driving mechanism includes a sleeve and a pressing unit, wherein: the driving mechanism includes a sleeve with an accommodating space, and the accommodating space is provided with a shaft hole penetrating to the other side; the pressing The unit is movably assembled in the accommodating space of the sleeve, and an elastic part for reciprocating movement is provided between the bottom of the pressing unit and the accommodating space, and the bottom of the pressing unit has an inner chute recessed inward, And at least one side or more than one side of the inner chute is provided with a through hole penetrating outwards, and a positioning piece that is radially displaced or withdrawn is provided in the at least one or more than one through hole. The driving mechanism of the positioning device as described in claim 7, wherein the pressing unit assembled in the accommodating space of the sleeve of the driving mechanism includes a release key base, a pressing base, a first elastic body of the elastic part and a second elastic body. Elastic body, the inside of the release key seat is provided with a sliding space for the pressing seat to move through, the bottom edge is used for the first elastic body to resist one side, and a through hole penetrating outward is provided on one side of the sliding space , The other side is provided with a guide inclined surface that shrinks inwardly, and a sliding hole with a reduced aperture is provided on the other side of the guide inclined surface relative to the sliding space, and the pressing seat is provided with a pressing body at the through hole that exposes the sliding space , one side of the pressing body is provided with a sliding body located in the sliding space and the sliding hole, the bottom surface of the sliding body is supported by one side of the second elastic body, and the pressing body and the sliding body are mutually The adjacent position is provided with a resisting shoulder against the inner side of the through hole, and at least two opposite sides of the inner chute are respectively provided with the through holes penetrating outward laterally, and each of the through holes is movably installed. The positioning parts are respectively in the shape of a ball . The driving mechanism of the positioning device as described in claim 8, wherein the outer edge of the bottom of the release key base is provided with a sleeve part for one side of the first elastic body to resist, and the bottom surface of the accommodating space inside the sleeve is provided with a socket for the The other side of the first elastic body resists the first shoulder, and along the first shoulder to one side is provided with an accommodating groove with a reduced aperture, then the inner edge of the accommodating groove is provided with a space for the other side of the second elastic body The second shoulder that resists is provided with a through-type shaft hole on the other side of the second shoulder; part of the volume of the positioning member is respectively exposed outside each of the through holes along the sliding space, the guiding slope, and the sliding Sliding displacement at the hole and radial (ie horizontal) displacement in and out of the inner chute at each of the through holes; as for the drive mechanism, there is a fitting part fixed on the preset second plate at the bottom of the sleeve A resisting ring protruding toward the accommodating space is provided on the other side of the sleeve opposite to the fitting portion, and an outer shoulder is provided on the outside of the release key seat to abut against the resisting ring to form a limit edge.

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