TWI843346B - Positioning device - Google Patents

Abstract

The present invention relates to a positioning device, wherein a shaft seat is provided with a shaft rod and a limit rod with different rod diameters, and a limit body is provided on the other side of the limit rod of the shaft rod, and a sliding seat for a limit unit is inserted through the shaft rod and the limit rod of the shaft seat, and a release key seat is sleeved on the outer side of the sliding seat, and a sliding space is provided inside the release key seat for the sliding seat to slide and displace, and an inner sliding groove is provided inside the sliding seat for the limit body and the limit unit to slide and displace. The positioning rod slides movably, and a through hole penetrating outward is provided on at least one or more sides of the inner slide groove. A positioning member is provided in at least one or more through holes and can move axially along the limiting body, that is, a release area is provided on the inner wall surface of the sliding space to drive at least one or more through holes to radially displace the positioning member to clamp or withdraw from the limiting rod, so as to achieve the purpose of easily controlling the locking or unlocking of the positioning device.

Description

Positioning device

The present invention provides a positioning device, in particular a positioning device that forms a lateral limit fixation through longitudinal driving, wherein a sliding seat and a release key seat are assembled on a shaft seat, and the release key seat drives the sliding seat to slide along the shaft rod, the limit rod and the limit body of the shaft seat, so as to achieve the purpose of easily controlling the locking or unlocking of the positioning device.

In general, many items in daily life use screws or latches to achieve positioning when they move back and forth. For example, items with telescopic structures such as drawers and case panels use screws or latches to temporarily position the rails and slots when they move to a predetermined position, allowing users to work while the rails and slots are positioned and not moving; or equipment such as desktop computers, laptops, industrial computers, workstations, etc. that are assembled using multiple devices and mechanisms use screws or latches to position the panels in a stacked state, so that the outer shell of the mechanism is provided with a panel that can be assembled and disassembled movably, or multiple devices and mechanisms can be assembled or disassembled relatively conveniently.

Furthermore, in addition to the tips and threads of general screws and plugs, which may cause users to accidentally touch and get injured, when disassembling various devices, mechanisms or panels, the screws or plugs must be removed as a whole, and the problem of screws or plugs being lost is often encountered during use. If the user does not have spare screws or plugs, the remaining screws or plugs will be used for assembly, resulting in the assembled mechanism and panel forming an unstable assembly state, which is easy to loosen and fall off. It is also possible that after many screws or plugs are removed, they are placed The problem is that the corresponding screws or pins cannot be found smoothly for assembly and fixing when they are placed in the same position; moreover, when disassembling screws or pins, most of them need to be operated with hand tools (such as screwdrivers or wrenches, etc.). With the different types of screws or pins, users need to prepare many hand tools, which often leads to unsuccessful assembly and disassembly operations. Due to the above problems and deficiencies in actual use, it is extremely inconvenient to use screws or pins for stacking and positioning of panels.

The applicant of this case submitted a new patent application on November 9, 2000, for "Structural Improvement of Positioning Device", application number 099221678, and obtained a certificate and announced it in the Patent Gazette on May 11, 2011, certificate number M402972. Please refer to Figures 11 and 12. The positioning device is a recessed receiving groove A1 on one side of the through hole A0 inside the base A, and the through hole A0 is used for the positioning rod B1 of the positioning rod set B to pass through, and a through body B11 is provided on one side of the positioning rod B1, and a stop ring B12 is convexly provided on the outer edge of the positioning rod B1 near the through body B11, and the stop ring B12 is extended to the A sliding rod B13 is further extended on the other side, and the outer edge of the sliding rod B13 is cut along the axial direction to have two opposite long cutting edges B14, that is, a concave annular groove B15 is provided in the middle section of the sliding rod B13, and an inner screw hole B16 is provided on the other side of the sliding rod B13 facing inward, and an elastic body B2 is provided on the outer sleeve of the sliding rod B13, so that one side of the elastic body B2 is supported on the stop ring B12 of the positioning rod B1, and the other side of the elastic body B2 is supported on the side surface 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, and the inner side of the limiting hole B30 has two phases. The retracted side edge B31 can be used for the two long cut edges B14 of the sliding rod body B13 of the positioning rod B1 to align with the two retracted side edges B31 of the limiting body B3 for movable extension and displacement. In addition, the inner screw hole B16 on the side of the sliding rod body B13 is used to lock the screw B41 on one side of the rod head B4, so that the rod head B4 is exposed on the base A. The rod head B4 can be used to pull the positioning rod B1 into the through hole A0, so that the through body B11 on one side of the positioning rod B1 is retracted into the through hole A0, and the stop ring B12 pushes the elastic body B2 to compress the limit body B3, so that the sliding rod body B13 can slide in the limit hole B30 of the limit body B3. When the annular groove B15 is aligned with the position limiting body B3, the rod head B4 can be rotated to drive the positioning rod B1 to rotate, so that the long cut edges B14 on both sides of the sliding rod body B13 are turned to be staggered with the contraction side edges B31 on both sides of the limiting body B3, so as to clamp the sliding rod body B13 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 cut edges B14 on both sides are turned to the two contraction side edges B31 of the positioning limiting body B3, and through the elastic restoring force of the elastic body B2, the positioning rod B1 can be pushed to move to the outside of the through hole A0 of the base A, so that one side of the positioning rod B1 penetrates the body B11 and then exposes the outside of the base A.

However, the limiter B3 of the previous case is fixed in the receiving groove A1 of the base A, and it is not easy to detect whether the two side contraction edges B31 of the limiter B3 and the two side long cut edges B14 of the sliding rod B13 are aligned or misaligned. Therefore, when the rotating rod head B4 is linked to the positioning rod B1, it is necessary to distinguish the two side long cut edges B14 of the sliding rod B13 and the limiter by feel. The alignment of the two retracted side edges B31 of the body B3 forms a blind spot during use, which is not conducive to the operation of the positioning device; and the positioning rod B1 is provided with an elastic body B2 on the outside of the sliding rod body B13. When the gripping rod head B4 rotates and the sliding rod body B13 of the positioning rod B1 moves in the limiting hole B30 of the limiting body B3, the elastic body B2 is applied to the sliding rod body B13. The resistance is affected, which easily causes the positioning rod B1 to be in an unstable state such as shaking and deflection. When the rod head B4 is rotated to align the two long cut edges B14 of the sliding rod body B13 with the two contracted 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 the rebound force, so that the gripped rod head B4 suddenly jumps out of the gripping fingers, causing the rod head B4 to hit the base A, directly impacting the base A and the limiting body B3. Over a long period of time, it is easier to cause the base A to tilt, and the positioning rod B1 cannot directly pass through the outside of the base A, which is not easy to align with the positioning hole C0 of the plate C, which is not conducive to the combination and clamping between the two plates C, that is, the fixed device has some defects in actual application.

Therefore, how to solve the inconvenience and troubles of the current positioning device in application and operation, as well as the troubles and defects in assembly and positioning between two plates, is the direction that the relevant manufacturers engaged in this industry are eager to study and improve.

Therefore, in view of the above problems and deficiencies, the inventor collected relevant information, evaluated and considered various aspects, and used his many years of experience in this industry to continuously create and modify, and finally designed the invention patent of this positioning device.

The main purpose of the present invention is that the positioning device is provided with a shaft and a limit rod with different rod diameters on the shaft seat, and a limit body is provided on the other side of the limit rod of the shaft seat, and a sliding seat for the limit unit is inserted on the shaft and the limit rod of the shaft seat, and a release key seat is provided on the outer sleeve of the sliding seat, and a sliding space is provided inside the release key seat for the sliding seat to slide and move, and an inner sliding groove is provided inside the sliding seat for the limit body to slide and move. , the limit rod slides movably, and a through hole penetrating outward is provided on at least one side or more than one side of the inner slide groove, and a positioning member is provided in at least one or more through holes to move axially along the limit body, that is, a release area is provided on the inner wall surface of the sliding space to drive at least one or more through holes to radially displace the positioning member to clamp or withdraw from the limit rod, so as to achieve the purpose of easily controlling the locking or unlocking of the positioning device.

Another purpose of the present invention is that the shaft seat is provided with a docking portion fixed to a preset first plate at the bottom of the base, and a shaft rod, a limit rod and a limit body with different rod diameters are sequentially provided at the top center of the base, and the rod diameter of the shaft rod is larger than the rod diameters 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 a first guide slope extending obliquely toward the limit rod is provided at the bottom of the limit body, and a second guide slope extending outward in a gradually contracting manner is provided on the other side of the limit body relative to the first guide slope.

Another purpose of the present invention is to assemble the sleeve of the driving mechanism on the outside of the release key seat with the limit unit, and the sleeve is provided with a receiving space inside to accommodate the limit unit, and a shaft hole is provided on one side of the receiving space for the shaft rod and the limit rod to pass through, and the limit unit assembled by the driving mechanism in the receiving space of the sleeve includes a release key seat, a push seat, a first elastic body and a second elastic body of the elastic part, and a sliding space is provided inside the release key seat for the push seat to pass through movably, and a bottom edge is provided for the first elastic body to abut against one side, and a through hole penetrating outward is provided on one side of the sliding space, and a release area is provided on the other side, and the release area is provided with a guide that retracts inwardly. The inclined surface is provided with a sliding hole with a reduced hole diameter on the other side of the guiding inclined surface relative to the sliding space, and 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 body on one side, which can be located in the sliding space and the sliding hole for active sliding movement. The bottom surface of the sliding body is provided for abutment by one side of the second elastic body, and abutment shoulders are provided at adjacent positions of the pressing body and the sliding body for abutment against the inner side of the through hole, and an inner slide groove is provided inside the push seat for the limit body and the limit rod to slide and move, and at least two opposite side surfaces of the inner slide groove are provided with through holes that penetrate horizontally outward, and positioning pieces are respectively installed in each through hole, and each positioning piece is spherical.

Another object of the present invention is that the outer edge of the bottom of the release key base can be provided with a sleeve portion for the first elastic body to be sleeved and supported on one side, and the bottom surface of the accommodating space inside the sleeve is provided with a first shoulder for the first elastic body to support the other side, and a accommodating groove with a reduced aperture is provided along one side of the first shoulder, and the inner edge of the accommodating groove is provided with a second shoulder for the second elastic body to support the other side. , a through-type shaft hole is provided on the other side of the second shoulder; the positioning member partially exposes the outside of each through hole and slides along the sliding space, the guiding slope of the release area, and the sliding hole, and moves radially (i.e. horizontally) in and out of the inner slide groove at each through hole, and slides along the limiting body to enter and exit the limiting rod to form a clamping or disengagement action.

Another purpose of the present invention is that the driving mechanism is provided with an engaging portion fixed to a preset second plate at the bottom of the sleeve, and a supporting ring protruding toward the accommodating space is provided on the other side of the sleeve relative to the engaging portion, and an external shoulder edge is provided on the outside of the release key seat to abut against the supporting ring edge to form a limit.

1: Shaft seat

11: Base

111: Docking section

12: Shaft

13: Limit rod

14: Limiting body

141: First guide slope

142: Second guide slope

2: Limiting unit

21: Sliding seat

210: Inner chute

211:Through hole

212: Pressing body

213: Sliding body

214: Support the shoulder

22: Release the keypad

220: Sliding space

221: Release area

2211:Guidance ramp

2212: Sliding hole

222:Through hole

223: socket part

23: Positioning parts

24: Elastic part

241: The first elastic body

242: Second elastic body

25: Outer shoulder edge

3: Driving mechanism

30: Storage space

31: Sleeve

311: shaft hole

312: First shoulder

313: Storage tank

314: Second shoulder

32: Fitting part

33: Supporting the environment

4: First board

40: First positioning hole

5: Second board

50: Second positioning hole

A: Base

A0: Through hole

A1: Storage tank

B: Positioning rod assembly

B1: Positioning rod

B11: Penetration

B12: Stop ring

B13: Sliding rod body

B14: Long cut edge

B15: concave ring groove

B16: Internal screw hole

B2: Elastic body

B3: Limiting body

B30: Limiting hole

B31: Contraction of the side edges

B4: Clubhead

B41: Screw

C: Board

C0: Positioning hole

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

[Figure 2] is a three-dimensional exploded view of the present invention.

[Figure 3] is a three-dimensional exploded view of the present invention from another direction.

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

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

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

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

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

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

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

[Figure 11] is a three-dimensional exploded view of the known fixing device.

[Figure 12] is a side cross-sectional view of the known fixing device.

In order to achieve the above-mentioned purpose and effect, the technical means and structure, implementation method, etc. adopted by the present invention are described in detail in the following figure for the preferred embodiment of the present invention, so as to facilitate a complete understanding.

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

The shaft seat 1 is provided with a shaft rod 12 and a limit rod 13 with different rod diameters in sequence at the central position of the base 11, and a limit body 14 is provided on the other side of the limit rod 13 relative to the shaft rod 12.

The limit unit 2 includes a push seat 21 that is inserted through the shaft 12 and the limit rod 13 of the shaft seat 1, 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 groove 210 for the limit body 14 and the limit rod 13 to slide and move. At least one side or more than one side of the inner groove 210 is provided with a through hole 211 that penetrates outward. A positioning member 23 is provided which can move axially along the position limiting body 14, and a sliding space 220 is provided inside the release key seat 22 for the sliding displacement of the push seat 21, that is, a release area 221 is provided on the inner wall surface of the sliding space 220 to drive at least one or more through holes 211 of the positioning member 23 to move radially in and out of the position limiting rod 13, forming a blocking or retreating stop limit of the position limiting body 14, etc.

Please refer to Figures 2, 3, 4, 5, 6, 7, 8, 9, and 10, which are the three-dimensional exploded view of the present invention, the three-dimensional exploded view from another direction, the side cross-sectional view, the side cross-sectional view during pressing action (I), the side cross-sectional view during pressing action (II), the side cross-sectional view during pressing action (III), the side cross-sectional view after pressing action, the side cross-sectional view during unlocking, and the side cross-sectional view after unlocking. It can be clearly seen from the figures that when the positioning device of the present invention is actually used, among them:

In a preferred embodiment of the positioning device of the present invention, the base 11 at the bottom of the shaft seat 1 is provided with a docking portion 111, which can be fixed to the first positioning hole 40 of the preset first plate 4 by using the docking portion 111, and a shaft rod 12, a limit rod 13 and a limit body 14 with different rod diameters are sequentially provided at the central position of the top of the base 11, wherein the rod diameter of the shaft rod 12 is greater than the rod diameters of the limit rod 13 and the limit body 14, and the outer diameter of the limit body 14 is greater than the rod diameter of the limit rod 13, and a first guide slope 141 is provided at the bottom of the limit body 14 to extend obliquely toward the limit rod 13, and a second guide slope 142 is provided on the other side of the limit body 14 to extend outward in a gradually contracting manner relative to the first guide slope 141.

The above-mentioned limiting unit 2 is a sleeve 31 of the driving mechanism 3 assembled on the outside of the release key seat 22. The sleeve 31 is provided with a receiving space 30 inside to accommodate the limiting unit 2, and a shaft hole 311 is provided on one side of the receiving space 30 for the shaft rod 12 and the limiting rod 13 to pass through. The limiting unit 2 assembled in the receiving space 30 of the sleeve 31 by the driving mechanism 3 includes the release key seat 22, the push seat 21, the first elastic body 241 and the second elastic body 242 of the elastic part 24, and the release key seat 22 is provided with a shaft hole 311 on one side of the receiving space 30 for the shaft rod 12 and the limiting rod 13 to pass through. The release key base 22 has a sliding space 220 for the push base 21 to be inserted and inserted, and the release key base 22 has a sleeve portion 223 at the bottom thereof for the first elastic body 241 to be sleeved and pressed against one side thereof, and the first elastic body 241 has a first shoulder 312 pressed against the bottom edge of the accommodating space 30 at the other side thereof, and a through hole 222 penetrating outward is provided on one side of the sliding space 220, and a release area 221 is provided on the other side thereof, and the release area 221 has a guide slope 2211 contracted inwardly. A sliding hole 2212 with a reduced diameter is provided on the other side of the guide inclined surface 2211 relative to the sliding space 220, and a through hole 222 is provided on the push seat 21 so that the pressing body 212 is exposed from the sliding space 220. A sliding body 213 is provided on one side of the pressing body 212 and can be movably slid in the sliding space 220 and the sliding hole 2212. The bottom surface of the sliding body 213 is supported by one side of the second elastic body 242, and the other side of the second elastic body 242 is supported by the inner side of the proximal hole 311. At the second shoulder 314 at the bottom edge of the accommodating groove 313, a supporting shoulder 214 is provided at the adjacent positions of the pressing body 212 and the sliding body 213 to support the inner side of the through hole 222, and an inner slide groove 210 is provided inside the push seat 21 for the limit body 14 and the limit rod 13 to slide and move. At least two opposite sides of the inner slide groove 210 are provided with through holes 211 that penetrate horizontally outward, and each through hole 211 is movably installed with a positioning member 23, and each positioning member 23 is spherical.

The 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 fix the second positioning hole 50 of the preset second plate 5.

When the above-mentioned shaft seat 1, the limiting unit 2 and the driving mechanism 3 are actually applied and implemented, the preset second plate 5, the limiting unit 2 and the driving mechanism 3 can be simultaneously moved to the upper part of the preset first plate 4 and the shaft seat 1, and the shaft hole 311 of the sleeve 31 of the driving mechanism 3 is aligned with the limiting body 14, the limiting rod 13 and the shaft rod 12 of the shaft seat 1, and the limiting body 14, the limiting rod 13 and the shaft rod 12 are passed through the shaft hole 311 of the sleeve 31 into the accommodating space 30, and then into the sliding hole 2212 of the release key seat 22 and the inner slide groove 210 of the push seat 21, so as to provide the preset The second plate 5 is quickly aligned with the preset first plate 4, that is, after applying force to press the preset second plate 5 toward the preset first plate 4, the pressing body 212 of the limit unit 2 is pressed, so that the push seat 21 is pressed and displaced vertically downward along the sliding space 220 of the release key seat 22, and the inner slide groove 210 in the push seat 21 slides downward along the limit body 14 and the limit rod 13, and when the spherical bodies of the positioning members 23 at the through holes 211 on both sides of the inner slide groove 210 slide along the second guide inclined surface 142 of the limit body 14, and the other sides respectively abut against the guide of the release key seat 22. The inclined surface 2211 slides, and each positioning member 23 respectively passes over the second guiding inclined surface 142 and enters the first guiding inclined surface 141. At the same time, the pressing body 212 is forced to slide each positioning member 23 along the guiding inclined surface 2211 into the sliding hole 2212 with a reduced hole diameter, and each positioning member 23 is radially squeezed by the sliding hole 2212, so that each positioning member 23 slides along the first guiding inclined surface 141 and is laterally displaced against the outer edge of the limit rod 13. At this time, the release key seat 22 is pushed by the first elastic body 241 to displace to the outer side of the accommodating space 30 of the sleeve 31, and The outer shoulder edge 25 of the release key seat 22 abuts against the abutting ring edge 33 at the top of the accommodating space 30, and the pressing body 212 of the push seat 21 sinks into the through hole 222 and enters the sliding space 220, that is, each positioning member 23 is clamped at the limit rod 13 and the sliding hole 2212 to form a clamping position, and the release key seat 22 presses the first elastic body 241 of the elastic part 24, and the push seat 21 presses the second elastic body 242, so that the pressing drive mechanism 3 can be locked with the shaft seat 1, and the preset second plate 5 can be positioned on the preset first plate 4.

If the preset second plate 5 is to be separated from the preset first plate 4, a force can be applied to the top of the release key seat 22 to allow the release key seat 22 to be pressed downwardly into the accommodating space 30 of the sleeve 31 of the driving mechanism 3, and the internal sliding hole 2212 of the release key seat 22 is allowed to slide along the sliding body 213, and the internal guiding inclined surface 2211 of the release key seat 22 is allowed to slide to the outer side of each positioning member 23, so as to release the force applied to the release key seat 22, and the release key seat 22 is pushed up by the elastic restoring force of the first elastic body 241 of the elastic part 24, and the elastic restoring force of the second elastic body 242 is allowed to push up the displacement seat 21, so that each positioning member 23 can be moved along the limiter, respectively. The first guide slope 141 of the body 14 radially displaces to the relative outer side, slides along the second guide slope 142 and the guide slope 2211 to the sliding space 220, and each positioning member 23 retracts from the limit rod 13 and moves along the first guide slope 141 to the second guide slope 142 above the limit body 14, and allows the pressing body 212 of the push 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, and the preset second plate 5, the limit unit 2 and the driving mechanism 3 can be taken out and separated from the shaft seat 1 and the preset first plate 4, so as to achieve the purpose of conveniently separating the preset second plate 5 from the preset first plate 4.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the contents of the present invention's specification and drawings should be included in the patent scope of the present invention and should be stated.

In summary, the positioning device of the present invention can achieve its effect and purpose when used. Therefore, the present invention is a creation with excellent practicality. In order to meet the application requirements of invention patent, the application is filed in accordance with the law. I hope that the review committee will approve this case as soon as possible to protect the inventor's hard work. If the review committee of the Jun Bureau has any doubts, please feel free to write to give instructions. The inventor will do his best to cooperate and will be grateful for the convenience.

1: Shaft seat

11: Base

111: Docking section

12: Shaft

13: Limit rod

14: Limiting body

141: First guide slope

142: Second guide slope

2: Limiting unit

21: Sliding seat

211:Through hole

212: Pressing body

213: Sliding body

214: Support the shoulder

22: Release the keypad

220: Sliding space

222:Through hole

23: Positioning parts

24: Elastic part

241: The first elastic body

242: Second elastic body

25: Outer shoulder edge

3: Driving mechanism

30: Storage space

31: Sleeve

32: Fitting part

33: Supporting the environment

Claims (6)

A positioning device includes a shaft seat and a limiter unit, wherein: the shaft seat is provided with a shaft rod and a limiter rod with different rod diameters, and a limiter body is provided on the other side of the limiter rod relative to the shaft rod; and the limiter unit includes the shaft rod penetrating the shaft seat, a push seat on the limiter rod, and a release key seat sleeved on the outside of the push seat, the push seat is provided with an inner slide groove for the limiter body and the limiter rod to slide movably, and at least one side or more than one side of the inner slide groove is provided with a through hole penetrating outward, and a release key seat is provided in the at least one or more through holes. A positioning piece is provided for axial movement along the limiting body, and a sliding space for the sliding seat to slide and displace is provided inside the release key seat, that is, a release area is provided on the inner wall surface of the sliding space for driving the positioning piece in at least one or more through holes to radially displace and clamp or withdraw from the limiting rod. The limiting unit is assembled with a sleeve of a driving mechanism on the outside of the release key seat, and a housing space for accommodating the limiting unit is provided inside the sleeve, and an axial hole for the shaft rod and the limiting rod to pass through is provided on one side of the housing space, and the driving mechanism The limit unit assembled in the accommodating space of the sleeve includes the release key seat, the push seat, the first elastic body and the second elastic body of the elastic part. The release key seat is provided with a sliding space for the push seat to move through, and the bottom edge is supported by the first elastic body on one side. A through hole penetrating outward is provided on one side of the sliding space, and the release area is provided on the other side. The release area is provided with a guiding inclined surface shrinking inwardly, and a sliding hole with a reduced hole diameter is provided on the other side of the guiding inclined surface relative to the sliding space, and the push seat is provided with a through hole penetrating outwardly. The pressing body at the through hole of the sliding space is provided with a sliding body on one side of the pressing body, which is located in the sliding space and in the sliding hole and slides movably. The bottom surface of the sliding body is provided for abutment by one side of the second elastic body, and the pressing body and the sliding body are provided with abutment shoulders that abut against the inner side of the through hole at adjacent positions, and the inner sliding groove for the limiter and the limiter rod to slide and shift is provided inside the push seat, and the through holes that penetrate horizontally outward are provided on at least two opposite sides of the inner sliding groove, and the positioning member is movably installed in each through hole. As described in claim 1, the bottom of the shaft seat is provided with a base, one side of the base is provided with a docking portion fixed to a preset first plate, and the shaft rod, the limit rod and the limit body are sequentially protruded on the top of the base. As described in claim 2, the positioning device, wherein the shaft rod, the limit rod and the limit body with different rod diameters are protruding at the central position of the top of the base, and the rod diameter of the shaft rod is larger than the rod diameters 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 a first guide slope extending obliquely toward the limit rod is provided at the bottom of the limit body, and a second guide slope extending outward in a gradually contracting manner is provided on the other side of the limit body relative to the first guide slope. A positioning device as described in claim 1, wherein each of the positioning members is spherical in shape. As described in claim 1, the outer edge of the bottom of the release key base is provided with a sleeve portion for the first elastic body to be sleeved and supported on one side, the bottom surface of the accommodating space inside the sleeve is provided with a first shoulder for the first elastic body to be supported on the other side, and a accommodating groove with a reduced aperture is provided along one side of the first shoulder, and the inner edge of the accommodating groove is provided with a second elastic body for the second elastic body to be supported on the other side. The second shoulder is provided with a through-type shaft hole on the other side; the positioning member partially exposes the outside of each through hole and slides along the sliding space, the guide slope of the release area, and the sliding hole, and moves radially (i.e. horizontally) in and out of the inner slide groove at each through hole, and slides along the limiting body to enter and exit the limiting rod to form a clamp or disengagement. As described in claim 1, the driving mechanism is provided with an engaging portion fixed to a preset second plate at the bottom of the sleeve, and a supporting ring protruding toward the accommodating space is provided on the other side of the sleeve relative to the engaging portion, and an external shoulder edge is provided on the outside of the release key seat to abut against the supporting ring edge to form a limit.

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