TW202338219A - Positioning device achieving the purpose of operating the positioning device to lock or unlock easily - Google Patents

Abstract

The invention relates to a positioning device, which is provided with shaft rods and limit rods with different rod diameters on the axle seat, and a limiting body is provided on the other side of the limit rod relative to the shaft rod for the push seat of the limit unit to penetrate through the shaft rod and the limit rod of the axle seat. A release key seat is sleeved on the outside of the push seat, and a sliding space is provided inside the release key seat for the sliding displacement of the push seat. There is an inner chute inside the push seat for the movement and sliding of the limiting body and the limit rod. A through hole penetrates outward on at least one side or more than one side of the inner chute. A positioning member is disposed in at least one or more through holes to move axially along the limiting body; that is, release areas are respectively provided on the inner wall of the sliding space to drive at least one or more positioning members in the through holes to radially displace, clamp, or retreat away from the limit rod, thereby achieving the purpose of operating the positioning device to lock or unlock easily.

Description

Positioning device

The present invention provides a positioning device, especially a positioning device that is driven longitudinally to form a transverse limiting fixation. A push seat and a release key seat are assembled on an axle seat, and the release key seat drives the push seat along the axis of the axle seat. The rod, the limit rod and the limit body slide to achieve the purpose of easily controlling the positioning device to lock or unlock.

Generally speaking, many items in daily life use positioning mechanisms such as screws or latches to achieve the positioning effect during the back and forth movement. For example, items with telescopic structures such as drawers and cabinet panel sets use screws. Or the latch allows the slide rail and chute to move to a predetermined position to temporarily form a position for the user to perform operations while the slide rail and chute are positioned and not moving; or such as desktop computers, notebook computers, and industrial computers. , work machines and other equipment assembled by multiple devices and mechanisms will use screws or pins to position the plates in a stacked state, so that the shell of the mechanism is equipped with a plate that can be movable assembled and disassembled. Or allow multiple devices and mechanisms to be easily assembled or disassembled relative to each other.

Furthermore, except for the tips and threads of general screws and bolts, users may be injured if they accidentally touch them. Moreover, when disassembling various devices, mechanisms or plates, the screws or bolts must be disassembled as a whole. In use, We often encounter the problem of missing screws or latches. If the user does not have spare screws or latches, he or she will use the remaining screws or latches to assemble, causing the assembly to fail. The assembled mechanisms and plates form an unstable combination state and are easily loosened and detached; there may also be problems such as the difficulty in finding the corresponding screws or pins for assembly and fixation after many screws or pins are disassembled and placed in the same position; and then Furthermore, when disassembling or assembling screws or bolts, most of them require the use of hand tools (such as screwdrivers or wrenches, etc.). With different types of screws or bolts, users need to prepare many hand tools, which often leads to assembly, The disassembly and assembly operations are not smooth due to the above-mentioned problems and deficiencies that constantly occur in actual use, resulting in extremely inconvenient deficiencies in the use of screws or pins for stacking positioning of panels.

The applicant in this case submitted a new patent application for "Structural Improvement of Positioning Device" on November 9, 1999, with application number 099221678, and obtained the patent and announced it in the Patent Gazette on May 11, 2000. The certificate No. M402972, please refer to Figures 11 and 12. The positioning device has an accommodating groove A1 recessed on one side of the through hole A0 inside the base A, and uses the through hole A0 to position the positioning rod group B. The rod B1 is passed through, and the positioning rod B1 is provided with a penetration body B11 on one side. The outer edge of the positioning rod B1 near the penetration body B11 is protruding with a stop ring B12, and is extended from the stop ring B12 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 edges B14, that is, a concave ring groove B15 is provided in the middle section of the sliding rod body B13, and another groove B15 is provided on the sliding rod body B13. The other side of the rod body B13 is provided with an internal screw hole B16 facing inward, and an elastic body B2 is provided around 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 body 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 receiving groove A1 of the base A, and a rectangular groove-shaped limiting hole B30 is provided inside the limiting body B3. , there are two opposite shrinking side edges B31 on the inside of the limiting hole B30, which can be used for the two long cutting edges B14 of the sliding rod body B13 of the positioning rod B1 to align with the two shrinking side edges B31 of the limiting body B3 for flexible and telescopic displacement. The internal screw hole B16 on the side of the sliding rod body B13 is used for locking the screw B41 on the side of the rod head B4, so that the rod head B4 is exposed outside the base A, and the rod head B4 can be used to pull and secure it. The position rod B1 shrinks toward the inside of the through hole A0, causing the through-body B11 on one side of the positioning rod B1 to shrink into the through hole A0, and the stop ring B12 pushes the elastic body B2 and compresses toward the limiter B3 to provide space for the sliding rod The body B13 slides in the limiting hole B30 of the limiting body B3. When the concave ring groove B15 aligns with the position of the limiting body B3, the rod head B4 can be rotated to drive the positioning rod B1 to rotate, and the two sides of the sliding rod body B13 The long cut edge B14 turns to be staggered with the contracted side edges B31 on both sides of the limiting body B3, so as to hold the sliding rod body B13 at the limiting body B3; and the rod head B4 can be rotated to drive the sliding The rod B13 rotates so that the two long cut edges B14 are turned to the two contracted side edges B31 of the alignment limiter B3, and through the elastic restoring force of the elastic body B2, the positioning rod B1 can be pushed toward the through hole A0 of the base A. Move outward, and the through-body B11 on one side of the positioning rod B1 is exposed outside the base A again.

However, the limiting body B3 of the previous case is fixed in the receiving groove A1 of the base A, and it is difficult to detect the space between the two contracted side edges B31 of the limiting body B3 and the two long cutting edges B14 of the sliding rod body B13. In the state of alignment or misalignment, when the rotating club head B4 rotates in conjunction with the positioning rod B1, it is necessary to identify the alignment of the two long cutting edges B14 of the sliding rod body B13 and the two contracted side edges B31 of the limiting body B3 according to the feel. , forming a blind spot during use, which is not conducive to the operation of the positioning device; and the positioning rod B1 is covered with an elastic body B2 on the outside of the sliding rod body B13, and the gripping rod head B4 rotates 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 causes the positioning rod B1 to rock, yaw and other unstable states, and rotates the club head B4 to provide the sliding rod. When the two long side edges B14 of the body B13 are aligned with the two contracted side edges B31 of the limiting body B3, the elastic body B2 will push the positioning rod B1 out of the through hole A0 of the base A with rebound force, causing the caught The fingers holding the club head B4 suddenly jumped out of the grip, causing the club head B4 to hit the base A, directly colliding with the base A and the limiter B3. For a long time, it is more likely to cause the base A to skew, and also cause the positioning rod B1 to skew. It is impossible to directly penetrate the outside of the base A and it is difficult to align the positioning hole C0 on the plate C, which is not conducive to the combination and fastening of the two plates C, that is, a fixed There are some shortcomings in the actual application of the device.

Therefore, how to solve the problems and problems that are inconvenient in the application and operation of the current positioning device, as well as the troubles and deficiencies that are not conducive to assembly and positioning between two plates, are the directions that relevant manufacturers in this industry are eager to study and improve. By.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, evaluated and considered many aspects, and used his many years of experience accumulated in this industry to design an invention patent for this positioning device through continuous creation and modification. The birther.

The main purpose of the present invention is that the positioning device is provided with shafts and limiting rods with different rod diameters on the shaft base, and a limiting body is provided on the other side of the limiting rod relative to the shaft for the limiting unit. The push seat is installed on the shaft and the limit rod of the axle seat, and a release key seat is set on the outside of the push seat, and a sliding space is provided inside the release key seat for the sliding displacement of the push seat. The inside of the push seat If an inner chute is provided for the movable sliding movement of the limit body and the limit rod, and there is a through hole penetrating outward on at least one side or more than one side of the inner chute, then there is a through hole in at least one or more through holes. There is a positioning piece that can move axially along the limiting body, that is, a release area is provided on the inner wall of the sliding space to drive the positioning piece in at least one or more through holes to radially displace to lock or retreat from the limiting rod. , to achieve the purpose of easily controlling the locking or unlocking of the positioning device.

Another object of the present invention is that the axle seat is provided with a butt portion fixed to the preset first plate at the bottom of the base, and the base is provided with axle rods and limit rods of different rod diameters in sequence at the center of the top. And the limit body, and the rod diameter of the shaft is larger than the rod diameter of the limit rod and the limit body, and the outer diameter of the limit body is larger than the rod diameter of the limit rod, and there is a limiter at the bottom of the limit body. The position rod has a first guide slope extending obliquely. Relative to the first guide slope, a second guide slope extending outwards is provided on the other side of the limiting body. Guide slope.

Another object of the present invention is that the limiting unit is assembled with a sleeve of the driving mechanism outside the release key base. The sleeve is provided with an accommodating space inside to accommodate the limiting unit, and a shaft hole is provided on one side of the accommodating space. The limiting unit for the shaft and the limiting rod to pass through, and for the driving mechanism to be assembled in the accommodation space of the sleeve, is a first elastic body and a second elastic body including a release key seat, a push seat, and an elastic part. The release key There is a sliding space inside the seat for the sliding seat to move through. The bottom edge is for the first elastic body to resist on one side. There is a through hole penetrating outward on one side of the sliding space and a release area on the other side. The area is provided with a guide slope that shrinks inward. The relative sliding space is provided with a sliding hole with a reduced diameter on the other side of the guide slope. The push seat is provided with a through hole through which the pressing body penetrates the sliding space. The pressing body is provided with a sliding hole on one side. The body can move and slide in the sliding space and the sliding hole. The bottom surface of the sliding body is for one side of the second elastic body to resist, and the adjacent positions of the pressing body and the sliding body are provided with resisting shoulders to resist the through hole. On the inside, an inner chute is provided inside the push seat for the sliding displacement of the limit body and the limit rod. At least two opposite sides of the inner chute are provided with through holes that penetrate laterally outward. Each through hole is movable. Positioning parts are provided, and each positioning part is in the shape of a ball.

Another object of the present invention is that the outer edge of the bottom of the release key base can be provided with a socket portion for one side of the first elastic body to be sleeved and resisted, and the bottom surface of the accommodation space inside the sleeve is provided with a socket portion for the first elastic body to be sleeved and resisted. The other side of the first elastic body resists the first shoulder, and a receiving groove with a reduced aperture is provided along the first shoulder to one side, and the inner edge of the receiving groove is provided with a space for the other side of the second elastic body. The resisting 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 exposed outside each of the through holes along the guide slope of the sliding space and the release area. , the sliding hole slides and displaces radially (i.e., horizontally and transversely) at each through hole to move in and out of the inner chute, and slides along the limiting body to move in and out of the limiting rod to form a jam or Detachment and other actions.

Another object of the present invention is that the driving mechanism is provided with a fitting portion fixed on the preset second plate at the bottom of the sleeve, and opposite to the fitting portion is a fitting portion on the other side of the sleeve facing the accommodation space. A protruding resisting ring is provided on the outside of the release key base to abut against the resisting ring to form a limiting outer shoulder.

1: Shaft seat

11:Base

111: docking department

12: Shaft

13:Limit rod

14: Limiting body

141: First guide slope

142: Second guide slope

2:Limiting unit

21: Push seat

210:Inner chute

211:Through hole

212: Pressing body

213:Sliding body

214: Resist shoulder

22: Release the key base

220:Sliding space

221: Release area

2211:Guide slope

2212:Sliding hole

222:Through hole

223:Socket Department

23: Positioning parts

24: Flexible Department

241:First elastomer

242:Second elastomer

25:Outer shoulder edge

3: Driving mechanism

30: Accommodation space

31:Sleeve

311: Shaft hole

312: First shoulder

313: Accommodation tank

314:Second shoulder

32: Chimeric part

33: Resist the ring

4: First plate

40: First positioning hole

5:Second plate

50: Second positioning hole

A: base

A0:Through hole

A1: Accommodation tank

B: Positioning rod group

B1: Positioning rod

B11: Penetrating body

B12: Stop ring

B13: Sliding rod body

B14: Long cut edge

B15: concave ring groove

B16: Internal thread hole

B2: Elastomer

B3: Limiting body

B30: Limit hole

B31: shrink side edge

B4: Club head

B41:Screw

C:Plate

C0: Positioning hole

[Figure 1] is a three-dimensional appearance view of the present invention.

[Figure 2] is an exploded perspective view of the present invention.

[Figure 3] is an exploded perspective view of another aspect of the present invention.

[Fig. 4] is a side cross-sectional view of the present invention.

[Figure 5] is a side cross-sectional view (1) of the present invention during the pressing action.

[Figure 6] is a side cross-sectional view (2) of the present invention during the pressing action.

[Figure 7] is a side cross-sectional view (3) of the present invention during the pressing action.

[Figure 8] is a side cross-sectional view after the pressing operation of the present invention.

[Figure 9] is a side cross-sectional view of the present invention when it is unlocked.

[Figure 10] is a side cross-sectional view of the present invention after unlocking.

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

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

In order to achieve the above objects and effects, the technical means, structures, implementation methods, etc. used in the present invention are described in detail below for a complete understanding of the preferred embodiments of the present invention.

Please refer to Figures 1, 2, 3, and 4, which are a three-dimensional appearance view, a three-dimensional exploded view, a three-dimensional exploded view from another direction, and a side cross-sectional view of the present invention. It can be clearly seen from the figures that, The positioning device of the present invention includes an axis seat 1 and a limiting unit 2, wherein:

The shaft seat 1 is located at the center of the base 11 and is provided with shafts 12 and limiting rods 13 with different rod diameters in sequence, and a limiting body 14 is provided on the other side of the limiting rod 13 relative to the shaft 12 .

The limiting unit 2 includes a shaft 12 that passes through the axle seat 1, a push seat 21 on the limit rod 13, and a release key seat 22 that is sleeved on the outside of the push seat 21. The push seat 21 is provided with an inner slide. The groove 210 allows the limiting body 14 and the limiting rod 13 to move and slide, and is provided with an outward penetrating through hole 211 on at least one side or more than one side of the inner chute 210, then at least one or more through holes 211 are provided. There is a positioning member 23 that can move axially along the limiting body 14, and a sliding space 220 is provided inside the release key base 22 for the sliding displacement of the pushing base 21, that is, a release area 221 is provided on the inner wall of the sliding space 220 to drive at least one Or the positioning member 23 in one or more through holes 211 radially moves in and out of the limiting rod 13 to form a stop or limit action such as being stuck or retreating from the limiting body 14 .

Please refer to Figures 2, 3, 4, 5, 6, 7, 8, 9, and 10, which are three-dimensional exploded views of the present invention, a three-dimensional exploded view from another direction, a side cross-sectional view, and a pressing action. Side view sectional view (1), side view sectional view during pressing action (2), side view sectional view during pressing action (3), side view sectional view after pressing action, side view sectional view when unlocking, unlocking From the following side cross-sectional view, it can be clearly seen that when the positioning device of the present invention is actually used, it includes:

In a preferred embodiment of the positioning device of the present invention, the base 11 of the bottom of the axle seat 1 is provided with a butt portion 111, which can be fixed at the first positioning hole 40 of the preset first plate 4, and at the base portion 11 The central position of the top is provided with shaft rods 12 of different rod diameters, limit rods 13 and limit rods in sequence. Position body 14, wherein the rod diameter of the shaft rod 12 is larger than the rod diameter of the limit rod 13 and the limit body 14, then the outer diameter of the limit body 14 is larger than the rod diameter of the limit rod 13, and in the limit A first guide slope 141 is provided at the bottom of the body 14 and extends obliquely toward the limiting rod 13 . A second guide slope 142 is provided on the other side of the limiting body 14 relative to the first guide slope 141 and extends gradually outward.

The above-mentioned limiting unit 2 is assembled with the sleeve 31 of the driving mechanism 3 outside the release key base 22. The sleeve 31 is provided with an accommodating space 30 inside to accommodate the limiting unit 2, and is provided on one side of the accommodating space 30. There is an axis hole 311 for the shaft rod 12 and the limit rod 13 to pass through, and the driving mechanism 3 is assembled in the accommodation space 30 of the sleeve 31. The limit unit 2 includes a release key seat 22, a push seat 21, and an elastic part. 24, the first elastic body 241 and the second elastic body 242 are provided with a sliding space 220 inside the release key base 22 for the pushing seat 21 to move through, and a sleeve portion 223 is provided at the bottom of the release key base 22 for the third elastic body 241 and the second elastic body 242. An elastic body 241 is set and resisted on one side, and the other side of the first elastic body 241 is resisted by the first shoulder 312 provided at the bottom edge of the accommodating space 30, and there is an outward-facing surface on one side of the sliding space 220. There is a release area 221 on the other side of the penetrating through hole 222. The release area 221 is provided with a guide slope 2211 that shrinks inward. The relative sliding space 220 is provided with a sliding hole 2212 with a reduced diameter on the other side of the guide slope 2211. The seat 21 is provided with a pressing body 212 at a through hole 222 that exposes the sliding space 220. A sliding body 213 is provided on one side of the pressing body 212 and can slide within the sliding space 220 and the sliding hole 2212. The bottom surface of the sliding body 213 is One side of the second elastic body 242 is resisted, and the other side of the second elastic body 242 is resisted at the second shoulder 313 at the bottom edge of the accommodation groove 313 inside the proximal hole 311, and the pressing body 212 and the sliding body 213 A resisting shoulder 214 is provided at an adjacent position to resist the inside of the through hole 222, and an inner slide groove 210 is provided inside the pushing seat 21 for the sliding displacement of the limiting body 14 and the limiting rod 13. Then, the inner slide groove 210 is at least The two opposite sides are respectively provided with through holes 211 that penetrate transversely outward. Each through hole 211 is movable with a positioning member 23, and each positioning member 23 is in the shape of a ball.

In addition, the above-mentioned driving mechanism 3 is provided with a fitting portion 32 on one side of the sleeve 31, and the fitting portion 32 can be used to be fixed at the second positioning hole 50 of the preset second plate 5.

When the above-mentioned shaft seat 1, limiting unit 2 and driving mechanism 3 are actually used and implemented, the preset second plate 5, the limiting unit 2 and the driving mechanism 3 can be simultaneously displaced to the preset first plate 4 and Above the axis seat 1, with the axis hole 311 of the sleeve 31 of the driving mechanism 3 facing the limiting body 14, the limiting rod 13 and the shaft 12 of the axis seat 1, and for the limiting body 14 and the limiting rod 13 , the shaft 12 penetrates into the accommodation space 30 from the shaft hole 311 of the sleeve 31, and then penetrates into the sliding hole 2212 of the release key base 22, and the slide groove 210 in the pushing base 21, which can be used to preset the second plate 5. Quickly align the preset first plate 4, that is, apply force to press the preset second plate 5 to the preset first plate 4, and then apply force to the pressing body 212 of the limiting unit 2 for movement. The seat 21 is pressed down and displaced longitudinally along the sliding space 220 of the release key seat 22, and the inner chute 210 in the push seat 21 slides downward along the limiting body 14 and the limiting rod 13. When the inner chute 210 The spheres of each positioning member 23 at the through holes 211 on both sides of 210 respectively slide along the second guide slope 142 of the limiting body 14, and the other side slides against the guide slope 2211 of the release key base 22 respectively, for each positioning member 23 to slide. The positioning members 23 respectively cross the second guide slope 142 and enter the first guide slope 141. At the same time, the pressing body 212 is exerted force to allow each positioning member 23 to slide along the guide slope 2211 into the sliding hole 2212 of the reduced aperture. Each positioning member 23 is pushed radially by the sliding hole 2212, so that each positioning member 23 slides along the first guide slope 141, and displaces laterally against the outer edge of the limiting rod 13. At this time, the release key seat 22 is pushed toward the outside of the accommodation space 30 of the sleeve 31 by the first elastic body 214, and the outer shoulder edge 25 of the release key base 22 abuts against the resisting ring 33 at the top of the accommodation space 30. Then the pressing body 212 of the push seat 21 is submerged into the through hole 222 and enters the inside of the sliding space 220. That is, each positioning member 23 is locked at the limiting rod 13 and the sliding hole 2212 to form a locked position, and the key base 22 is released. The first elastic body 241 pressing against the elastic part 24 and the pushing seat 21 pressing against the second elastic body 242 can reach the pressing driver. The structure 3 is for the purpose of forming a lock with the shaft seat 1, and can provide the function of positioning the second plate 5 on the first plate 4.

If you want to separate the preset second plate 5 from the preset first plate 4 , you can press hard toward the top of the release key base 22 so that the release key base 22 faces the accommodation space 30 of the sleeve 31 of the driving mechanism 3 Press down the displacement, and the internal sliding hole 2212 of the release key base 22 moves downward along the sliding body 213, and the internal guide slope 2211 of the release key base 22 slides to the outside of each positioning member 31, thereby releasing the release key base 22. By applying force, the elastic restoring force of the first elastic body 241 of the elastic part 24 pushes the release key base 22, and the elastic restoring force of the second elastic body 242 pushes the sliding seat 21, so that each positioning member 23 can be positioned along the limit respectively. The first guide slope 141 of the body 14 is radially displaced to the opposite side and slides along the second guide slope 142 and the guide slope 2211 into the sliding space 220. Each positioning member 23 retreats from the limiting rod 13 and moves along the first guide slope 142. The inclined surface 141 is displaced to the second guide inclined surface 142 above the limiting body 14, and allows the pressing body 212 of the pushing seat 21 to extend out of the through hole 222 of the release key seat 22, so that the driving mechanism 3 is separated from the shaft seat 1, that is, The preset second plate 5, the limiting unit 2 and the driving mechanism 3 can be taken out and detached from the shaft seat 1 and the preset first plate 4 to facilitate the separation of the preset second plate 5 from the preset first plate 4. purpose.

The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Therefore, any simple modifications and equivalent structural changes made by using the contents of the description and drawings of the present invention should be included in the same This invention is within the scope of the patent and shall be clarified.

To sum up, the above-mentioned positioning device of the present invention can indeed achieve its effect and purpose when used. Therefore, the present invention is a creation with excellent practicality and meets the application requirements for an invention patent. I hope to file an application in accordance with the law. The review committee will approve this case as soon as possible to protect the inventor's hard work. If the review committee of Jun Bureau has any doubts, please feel free to write a letter for instructions. The inventor will try his best to cooperate. I feel that it is convenient.

1: Shaft seat

11:Base

111: docking department

12: Shaft

13:Limit rod

14: Limiting body

141: First guide slope

142: Second guide slope

2:Limiting unit

21: Push seat

211:Through hole

212: Pressing body

213:Sliding body

214: Resist shoulder

22: Release the key base

220:Sliding space

222:Through hole

23: Positioning parts

24: Flexible Department

241:First elastomer

242:Second elastomer

25:Outer shoulder edge

3: Driving mechanism

30: Accommodation space

31:Sleeve

32: Chimeric part

33: Resist the ring

Claims (6)

A positioning device includes an axis seat and a limiting unit, including: The shaft seat is provided with shaft rods and limit rods with different rod diameters, and a limit body is provided on the other side of the limit rod relative to the shaft rod; and The limiting unit includes the shaft that passes through the axis seat, a push seat on the limit rod, and a release key seat that is sleeved on the outside of the push seat. The push seat is internally provided with a space for the limiting body, The limit rod moves movablely through the inner chute, and is provided with an outward penetrating through hole on at least one side or more than one side of the inner chute. Then, in the at least one or more through holes, there is an inner chute along the limit. The positioning member for axial movement of the position body, and a sliding space for the sliding displacement of the push seat is provided inside the release key base, that is, the inner wall of the sliding space is respectively provided with the driving member in the at least one or more through holes. The positioning piece is radially displaced to block or retreat from the release area of the limiting rod. The positioning device as claimed in claim 1, wherein the base is provided with a base at the bottom, and a butt portion fixed to the preset first plate is provided on one side of the base, and the shafts are sequentially protruded from the top of the base. rod, the limiting rod and the limiting body. The positioning device as described in claim 2, wherein the shaft, the limit rod and the limit body with different rod diameters are protruding from the top of the base at the central position, and the rod diameter of the shaft is larger than the limit The rod diameter of the rod and the limiting body, and the outer diameter of the limiting body is larger 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 , relative to the first guide slope, a second guide slope extending outward and tapering is provided on the other side of the limiting body. The positioning device as claimed in claim 1, wherein the limiting unit is assembled with a sleeve of the driving mechanism outside the release key base, and a space for accommodating the limiting unit is provided inside the sleeve. space, and there is an axis hole for the shaft and the limit rod to pass through on one side of the accommodation space, and the limit unit of the driving mechanism assembled in the accommodation space of the sleeve includes the The release key base, the push base, the first elastic body and the second elastic body of the elastic part are provided with a sliding space for the push base to move through, and a bottom edge for the first elastic body to abut one side. Resist, and there is a through hole penetrating outward on one side of the sliding space, and the release area is provided on the other side, then the release area is provided with a guide slope that shrinks inward, and the other side of the guide slope is opposite to the sliding space. A sliding hole with a reduced diameter is provided, and the push seat is provided with a pressing body that penetrates the through hole exposing the sliding space. The pressing body is provided with a movable sliding hole located in the sliding space and the sliding hole on one side. The sliding body has a bottom surface for resisting one side of the second elastic body, and the pressing body and the sliding body are provided with a resisting shoulder that resists the inside of the through hole at adjacent positions, and is located on the pushing seat. There is an inner chute inside 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 through holes that penetrate laterally outward, and each of the through holes can move separately. The positioning parts are installed, and each positioning part is in the shape of a ball. The positioning device as claimed in claim 4, wherein the outer edge of the bottom of the release key base is provided with a socket portion for one side of the first elastic body to be sleeved and resisted, and the bottom surface of the accommodation space inside the sleeve is provided with a socket portion for The other side of the first elastic body resists the first shoulder, and a receiving groove with a reduced aperture is provided on one side along the first shoulder, and the inner edge of the receiving groove is provided with a space for the second elastic body to The second shoulder of the side support is provided with a through-type shaft hole on the other side; part of the volume of the positioning member is exposed outside each of the through holes along the guide of the sliding space and the release area. The inclined surface and the sliding hole are slidingly displaced and each through hole is radially (i.e. horizontally) displaced in and out of the inner chute, and the sliding displacement along the limiting body is moved in and out of the limiting rod to form a lock. or disengage. The positioning device as claimed in claim 1, wherein the driving mechanism is provided with a fitting portion fixed on the preset second plate at the bottom of the sleeve, and opposite to the fitting portion is a fitting portion facing the container on the other side of the sleeve. A protruding resisting ring edge is placed in the space, and an outer shoulder edge is provided outside the release key base to abut against the resisting ring edge to form a limiting position.

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