TWI795941B - Board-to-Board Positioning Device - Google Patents

Abstract

The invention relates to a board-to-board positioning device. The shaft hole penetrating inside the base has at least one or more through holes penetrating to the outside in the vertical direction on the inner wall surface, and is equipped with a limiting sphere, and the outer side of the base There is a connection part, and at least one or more limit grooves are provided on the other side of the limit part to be located in the through hole, and then the internal operating space of the adjustment knob is passed outside the base, and the connecting part on one side of the base exposes the operating space The sliding wall on the outside and in the operating space is located in the through hole, and the driving part is located in the limit part, and the sliding wall is provided with a pressure side and a retreat side with different wall thicknesses to push the limit ball In and out of the through hole, the driving part is protruded with at least one or more clamping protrusions that rotate and slide along the limit part to enter and exit the limit groove. The identification part achieves the purpose of conveniently operating the positioning device to lock or unlock.

Description

Board-to-Board Positioning Device

The present invention provides a board-to-board positioning device, especially a positioning device that is convenient for identifying the locked or unlocked state. It is covered with an adjustment knob on the outside of the base, which can be used to rotate the adjustment knob to drive the displacement of the limit ball inside the base. , and through the identification part set on the outer edge of the adjustment knob, it is convenient to operate the positioning device for locking or unlocking.

Press, when assembling and joining general boards (board-to-board), they are locked by positioning screws with knobs, collars and screws. The screws and collars are first fixed on the outer panel and then rotated first. The knob and the panel for the screw to be locked into the inner layer form a preset position, and then the screw is locked with a hand tool, so that the outer panel and the inner panel are locked into one body. The locking mode of this multi-layer board body is It can be used for working machines or other board-to-board connections; however, these working machines need to use plates for locking, most of which are power devices or speed adjustment devices, and various power devices and speed adjustment devices are located in the Inside the space formed by the tool shell, the plate can be assembled, locked, and disassembled. When the power device crashes, malfunctions, or is damaged, or the speed adjustment device changes or adjusts the speed, the plate can be removed. In order to carry out related maintenance and adjustment operations, and the board is locked by a plurality of positioning screws, so it is easy to cause the positioning screws to fall off or be lost during the disassembly process, and the board cannot be re-locked back to its original position, which will affect the assembly and disassembly. The inconvenience and trouble of operation, that is, some operators solve the problem of locking screws The shortcoming of being easily lost, a fixing device composed of a cap, a screw part and a positioning seat has been developed. First, the positioning seat of the fixing device is fastened in the perforation of the plate, and then the screw part is used to lock it on another plate. Form a fixation, and when the user removes the board, the fixing device can still be fixed in the perforation of the board through the positioning seat, so that the fixing device will not fall off or be lost, but it must still be operated by the user during the assembly process or Using hand tools (such as screwdrivers or wrenches, etc.) to control the locking or dismounting of the fixing device still has many shortcomings and problems in practical application.

However, when two opposite plates are combined by locking and fixing, under the requirements of modular mass production and processing efficiency today, the cumbersome manual assembly process using screws will seriously affect the progress of the manufacturer's shipment. In addition, due to the small size of the screw, it is easy to lose during the process of locking the second plate, and because of the difference in the size of the screw hole at the position where the screw is locked, or the number of teeth and the pitch of the screw hole do not match, resulting in misalignment during assembly, alignment or locking. Difficult, and the space available for operating screws between the two opposite plates is quite narrow, that is, when the screws are assembled and disassembled, they are easily obstructed by surrounding objects, which not only consumes man-hours and inconvenience, but also leads to overall cost increase, resulting in an increase in the burden on the industry.

Therefore, how to solve the problems and troubles that the fixing device used in the current board locking is easy to be loosened and disengaged by wrong rotation, and the fixing device needs to apply force or use hand tools when assembling. Relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous creation and modification, he designed this board-to-board positioning device The invention patent birther.

The main purpose of the present invention is the plate-to-plate positioning device, the shaft hole penetrating inside the base, the inner wall surface is vertically provided with two opposite through holes penetrating to the outside, and each through hole is respectively equipped with a limit ball , and the outer side of the base is provided with a connecting part, and the other side of the limit part is provided with two relative limit grooves, which are located outside the two relative through holes, and then the inner operating space of the adjustment knob is passed outside the base. Then the connecting part on one side of the base is exposed outside the operating space, and the sliding wall in the operating space is located in the through hole, and the driving part is located in the limit part, and the sliding wall is provided with pressure sides with different inner diameters. , The retreating side can push two opposite limiting spheres into and out of each through hole, and the driving part is provided with at least one or more locking protrusions to slide in and out of one of them along the limiting part. At the position of the limit groove, there is an identification part on the outside of the adjustment knob relative to the clamping convex body, so as to achieve the purpose of conveniently operating the locking or unlocking of the positioning device.

Yet another object of the present invention is that the base is connected to at least two opposite walls of the inner shaft hole and is provided with at least two opposite through holes extending outwards in the direction perpendicular to the shaft hole, and each through hole is respectively equipped with a limiting sphere for movement, and The limiting part on one side of the base is respectively provided with two relative limiting grooves, which are located at least two relative through holes, and the two limiting grooves are used for the locking convex body to slide in and out, and are connected to the two relative limiting grooves. The other two opposite sides of the adjacent preset angle are respectively provided with pause card slots, and the two pause card slots are for the card convex body to slide in and out, then the preset angle can be between 60°~120° between, and a better preset angle can be 90°, and the connection part on one side of the base includes a sleeve ring for the limit washer to be sleeved, and an embedding ring for the preset first plate to be embedded in the first positioning hole. solid groove.

Another object of the present invention is that the internal operating space of the adjustment knob includes two adjacent stacked sliding walls and a driving part, so that the connecting part on one side of the base can pass through the sliding wall from the driving part to expose the outside of the adjustment knob. , and the sliding wall is provided with a pressing side with a smaller inner diameter facing the clamping convex body of the driving part, and the adjacent pressing side is provided with a retreating side with a larger inner diameter, and the outside of the adjustment knob There is a marking part in the form of a convex rod, a marking part in the shape of a cylinder, or a marking part in the shape of a plate, etc.

Another object of the present invention is that the positioning device further includes a base, an adjustment knob, and a shaft seat inserted in the shaft hole of the base. There are at least one or more through holes through, and at least one or more through holes are equipped with limiting balls, and the outer side of the base is provided with a connecting part, and the other side of the limiting part is provided with at least one or more The limit groove is located at the through hole, and the inner operating space of the adjustment knob is passed through the outside of the base, so that the connecting part on one side of the base is exposed outside the operating space, and the sliding wall in the operating space is located in the through hole , The driving part is opposite to the limit part, and the sliding wall is provided with different inner diameters of the pressure side and the retreat side, which can push at least one or more limit spheres into and out of at least one or more through holes At the position, the driving part is protruded with at least one or more clamping protrusions that rotate and slide along the limit part to enter and exit the position of the limit groove. Relative to the clamping protrusions, an identification part is provided outside the adjustment knob. The shaft seat system includes a seat body and a shaft extending outward from one side of the seat body, which can be used for the shaft hole of the base to be sleeved and passed through the shaft rod, and the seat body is located outside the base. There is a place where the stop body passes through at least one or more through holes, and a concave ring groove is provided at the shaft between the stop body and the seat body, for at least one or more through holes, and for The limiting spheres located in each through hole are movably clamped or withdrawn from the concave ring groove, so as to achieve the purpose of conveniently operating the positioning device to lock or unlock.

Another object of the present invention is that the outer diameter of the shaft seat is larger than the outer diameter of the base and smaller than the outer diameter of the adjustment knob, and the outer diameter of the shaft extending outward from one side of the seat is smaller than the shaft hole, and is opposite to the shaft. There is a connection side on the other side of the seat body, which can be used to insert and fix the second positioning hole of the second plate, the shaft seat extends outward from one side of the seat body, and the stopper body is set on the suspended side One side is provided with a first guide slope that is inclined in a conical shape and extends to the concave ring groove, opposite to the first guide slope on the other side of the stop body There is a second guide inclined surface that is tapered outwards.

1: Base

10: shaft hole

101: Through hole

1011: Resist the ring

11:Limiting sphere

12: Connecting part

121: sleeve ring

1210: ring hole

1211: limit washer

122: Embedded groove

13: limit part

130: limit slot

131: Pause card slot

2: Adjustment knob

20: Operation space

21: Sliding wall

211: pressure side

212: Departure side

22: Drive Department

221: card convex body

23: Logo Department

3: The first plate

30: The first positioning hole

4: shaft seat

41: seat body

411: Connection side

42: Shaft

420: concave ring groove

421: stop body

4211: The first guide slope

4212: The second guide slope

5: Second plate

50: The second positioning hole

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

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

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

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

[Fig. 5] is a top view of the shaft seat and the adjustment knob of the present invention before turning.

[Fig. 6] is a top view of the shaft seat and the adjustment knob of the present invention after being turned.

[Fig. 7] is a side sectional view of a preferred embodiment of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means adopted in the present invention, its structure, and the method of implementation, etc., are hereby described in detail with respect to preferred embodiments of the present invention. Its features and functions are as follows, so that it can be fully understood.

Please refer to Figures 1, 2, 3, and 4, which are three-dimensional appearance diagrams, three-dimensional exploded views, three-dimensional exploded views from another perspective, and side sectional views of the present invention. It can be clearly seen from the figures that The board-to-board positioning device of the present invention includes a base 1 and an adjustment knob 2, wherein:

The inside of the base 1 has a through shaft hole 10, and at least one or more through holes 101 are provided on the inner wall of the shaft hole 10 to pass through the outside in the direction perpendicular to the shaft hole 10, and at least one of the adjacent parts of the shaft hole 10 The periphery of the hole edge of one or more through holes 101 is provided with a resisting ring 1011 with an inwardly reduced aperture, and a limit ball 11 is installed inside the at least one or more through holes 101, and at least one or More than one limit sphere 11 is subjected to at least one or more than one The stop ring 1011 on the periphery of the upper through hole 101 can effectively prevent at least one or more limit spheres 11 from falling into the shaft hole 10, and the two sides outside the base 1 are respectively provided with connecting part 12 and limiting part 13, and the limiting part 13 is provided with at least one or more limiting grooves 130 for facing the outside of at least one or more through holes 101.

The adjustment knob 2 is covered on the outside of the base 1, and an operating space 20 is provided inside for the base 1 to pass through, and the connecting portion 12 on one side of the base 1 is exposed outside the operating space 20, and is respectively provided inside the operating space 20. There are sliding wall surfaces 21 and driving parts 22 stacked adjacently, and the sliding wall surface 21 is located at least one or more than one through hole 101, and the driving part 22 is located at the limit part 13, and the sliding wall surface 21 is provided with corresponding The pressing side 211 and the retreating side 212 of different inner diameters arranged side by side are used to push at least one or more than one limit ball 11 into and out of at least one or more passages by using the pressing side 211 and the retreating side 212 The hole 101, the driving part 22 is protrudingly provided with at least one or more clamping protrusions 221, which can be used for at least one or more clamping protrusions 221 to rotate and slide in and out of the at least one or more clamping protrusions 221 along the limiting part 13. At one or more limit slots 130 , an identification portion 23 is provided on the outside of the adjustment knob 2 opposite to at least one or more locking protrusions 221 .

The above-mentioned base 1 can be provided with at least two mutually symmetrical through-holes 101 on at least two opposite walls of the inner shaft hole 10 in the direction perpendicular to the shaft hole 10, and each through-hole 101 is respectively equipped with a limiter. The sphere 11, and the limit part 13 on the outer side of the base 1 are respectively provided with two relative limit grooves 130, which are located at least two mutually symmetrical through holes 101, and the two limit grooves 130 are used for the clamping convex body 221 do a sliding in and out, and the other two opposite sides of the adjacent preset angles of the two relative limit grooves 130 are respectively provided with a suspension card slot 131, and the two suspension card slots 131 are used for the clamping convex body 221 to make a Sliding in and out, the preset angle can be between 60°~120°, and a better preset angle can be 90°, and the connecting part 12 on one side of the base 1 includes 1211 sets of limit washers socket The ring 121 , the embedding groove 122 for the embedding and positioning of the first plate 3 with the first positioning hole 30 .

Moreover, the above-mentioned internal operation space 20 of the adjustment knob 2 includes two adjacent stacked sliding wall surfaces 21 and a driving part 22, so that the connecting part 12 on one side of the base 1 is penetrated by the driving part 22 and exposed through the sliding wall surface 21. Adjust the outer side of the knob 2, and the sliding wall surface 21 is provided with a pressing side 211 with a smaller inner diameter (R1) opposite to the clamping convex body 221 of the driving part 22, and the adjacent pressing side 211 is provided with a larger inner diameter ( R2) on the withdrawal side 212, the outside of the adjustment knob 2 is provided with a protruding rod body, a cylinder or a plate-shaped marking part 23, etc., and the inner diameters of the pressing side 211 and the withdrawal side 212 are all less than The size of the operating space 20 .

Furthermore, please refer to Figures 2, 3, 4, 5, 6, and 7, which are three-dimensional exploded views of the present invention, three-dimensional exploded views from another perspective, side sectional views, shaft seats and adjustment knobs The previous top view, the top view after the shaft seat and the adjustment knob are rotated, and the side view sectional view of the preferred embodiment, the board-to-board positioning device of the present invention further includes a base 1, an adjustment knob 2 and a shaft seat 4, wherein:

The inside of the base 1 has a through shaft hole 10, and the inner wall of the shaft hole 10 is provided with two opposite through holes 101 that pass through the outside in the direction perpendicular to the shaft hole 10. The inside of the two opposite through holes 101 are respectively A limiting sphere 11 is installed, and the connecting part 12 and the limiting part 13 are respectively provided on the two sides outside the base 1, and the limiting part 13 is provided with two oppositely arranged limiting grooves 130 opposite to each other. outside of the through hole 101.

The adjusting knob 2 covers the outside of the base 1, and an operating space 20 is provided inside for the base 1 to pass through, and the connecting part 12 on one side of the base 1 is exposed outside the operating space 20, and the ring of the limit washer 1211 is provided. The hole 1210 is nested and fixed at the sleeve ring 121 of the connecting part 12, and then assembled and positioned at the embedding groove 122 of the connecting part 12 for the first positioning hole 30 of the preset first plate 3, and the limit washer is used 1211 stops at the bottom of the adjustment knob 2 to prevent the adjustment knob 2 from detaching from the base 1, allowing the base 1 to be set in the operation space 20 of the adjustment knob 2, and adjacent stacking slides are provided in the operation space 20 The wall surface 21, the driving part 22, and the sliding wall surface 21 is located at least one or more than one through hole 101, the driving part 22 is located at the limit part 13, and the sliding wall surface 21 is provided with side-by-side pressing sides 211, The withdrawing side 212 is used to push the two spacer spheres 11 to slide in the two opposite through-holes 101 by using the pressure side 211 and the withdrawn side 212, so that part of the volume of the two spacer spheres 11 can enter the shaft respectively. In the hole 10, it is stopped by the resisting ring 1011 around the inner edge of the two through holes 101, which can prevent the limit ball 11 from falling into the shaft hole 10, and the driving part 22 is provided with at least one or one The above clamping protrusions 221 can be used for at least one or more than one clamping protrusions 221 to rotate and slide along the limiting part 13 and enter and exit the at least one or more than one limiting groove 130, relative to at least one or more than one The locking protrusion 221 is provided with a marking portion 23 on the outside of the adjustment knob 2 .

The shaft seat 4 consists of a seat body 41 located outside the base 1, and a shaft 42 extending outward from the side of the seat body 41 penetrates into the shaft hole 10 of the base 1. A stopper is provided on the floating side of the shaft rod 42. The body 421 can pass through at least one or more through holes 101, and a concave ring groove 420 is provided at the shaft 42 between the stop body 421 and the seat body 41, and at least one or more than one through the concave ring groove 420 is aligned. The through hole 101 is used for the limiting sphere 11 located in the through hole 101 to move and lock or withdraw from the concave ring groove 420 .

And the outer diameter of the seat body 41 of the above-mentioned shaft seat 4 is larger than the outer diameter of the base 1 and smaller than the outer diameter of the adjustment knob 2, and the outer diameter of the shaft rod 42 extending outward from the seat body 41 side is smaller than the shaft hole 10, and relatively The shaft 42 is provided with a connecting side 411 on the other side of the seat body 41, which is used for embedding and fixing the second positioning hole 50 of the second plate 5. The shaft 42 of the shaft seat 4 extends outward on one side of the seat body 41 On one side of the stop body 421 on the suspended side, there is a conical inclined first guide slope 4211 extending to the concave ring groove 420. The second guide inclined surface 4212 inclined outward .

The above-mentioned shaft seat 4 can use the shaft 42 on one side of the seat body 41 to pass through the operating space 20 of the adjustment knob 2, and then penetrate into the shaft hole 10 of the base 1. When the stop body 421 on the side of the shaft 42 enters the shaft hole 10, each limit sphere 11 can be pushed into each through hole 101 by the second guide inclined surface 4212 on one side of the stopper body 421, so that the shaft rod 42 and the stopper body 421 can smoothly penetrate into the shaft hole 10 .

Then the above-mentioned board-to-board positioning device of the present invention can be rotated during the actual application and implementation, and at least one or more locking protrusions 221 of the external marking part 23 of the adjusting knob 2 relative to the internal driving part 22 can be rotated. , so that at least one or more clamping protrusions 221 are rotated to the limiting groove 130 of the limiting portion 13 of the base 1, and at least one or more than one clamping protrusions 221 are stacked adjacent to each other The pressing side 211 of the sliding wall surface 21 is rotated to at least one or more through holes 101 on the base 1, and then the pressing side 211 with a smaller inner diameter pushes the through holes 101 on both sides The inner limiting sphere 11 enters the shaft hole 10 with a relative displacement, and then the limiting sphere 11 is stopped by the resisting ring 1011 around the inner edge of the two through holes 101 which are arranged oppositely, so that the limiting sphere 11 can be prevented from falling into the shaft. In the hole 10, the shaft hole 10 of the base 1 is sleeved and penetrated into the shaft rod 42 of the shaft seat 4, and the limiting spheres 11 in the through holes 101 on both sides of the shaft hole 10 of the base 1 are After being displaced along the second guide slope 4212 and crossing the stop body 421, it enters the first guide slope 4211 and is held in the recessed ring groove 420 of the shaft 42, and the preset first plate 3 positioned on the outside of the adjustment knob 2 is The seat body 41 positioned on the shaft seat 4 is fixed on the connecting side 411 to the preset side of the second plate 5 .

If you want to take out and separate the preset second plate 5 from one side of the preset first plate 3, you can turn the adjustment knob 2 again, and through the adjustment knob 2, at least one or one of the external marking parts 23 relative to the internal driving part 22 The above clamping convex body 221 rotates from the limiting groove 130 of the limiting part 13 to the other side of the limiting part 13 to suspend the locking groove 131, and at the same time, the at least one or more than one clamping protrusions The body 221 is stacked on the pressing side 211 of the adjacent sliding wall 21, that is, rotated away from the two opposite through holes 101 of the base 1, and the retreating side 212 of the adjacent pressing side 211 is displaced to the opposite position. At the opposite through hole 101, the spacer sphere 11 slides from the recessed ring groove 420 along the first guide slope 4211 into the through hole 101 from the withdrawn side 212 with a larger inner diameter, and pushes the limiters on both sides. The position sphere 11 is displaced by the shaft hole 10 and enters the withdrawal side 212 of the adjustment knob 2 through the through hole 101, so that the shaft 42 of the shaft seat 4 can be taken out from the shaft hole 10 of the base 1, and the seat of the shaft seat 4 The preset second board 5 embedded in the connecting side 411 on one side of the body 41 is separated from the preset first board 3 side.

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 description and drawings of the present invention should be included in the same reasoning. Within the scope of the patent of the present invention, I agree with Chen Ming.

To sum up, the above-mentioned board-to-board positioning device of the present invention can really achieve its effect and purpose when used, so the present invention is a creation with excellent practicability. Application, I hope that the review committee will approve this case as soon as possible, so as to protect the hard work of the inventor. If the review committee of Junju has any doubts, please feel free to send a letter to instruct. The inventor will do his best to cooperate, and I really appreciate it.

1: Base

10: shaft hole

101: Through hole

11:Limiting sphere

12: Connecting part

121: sleeve ring

1211: limit washer

122: Embedded groove

13: limit part

130: limit slot

131: Pause card slot

2: Adjustment knob

21: Sliding wall

211: pressure side

212: Departure side

22: Drive Department

221: card convex body

23: Logo Department

4: shaft seat

41: seat body

411: Connection side

42: Shaft

420: concave ring groove

421: stop body

4211: The first guide slope

4212: The second guide slope

Claims (8)

A board-to-board positioning device, which includes a base and an adjustment knob, wherein: the base has a through shaft hole inside, and at least one or more than one shaft hole is provided on the inner wall of the shaft hole and passes through the outside in a direction perpendicular to the shaft hole. Through holes, at least one or more of the through holes are equipped with limiting spheres, and the two sides outside the base are respectively provided with connecting parts and limiting parts, and the limiting parts are provided with at least one or at least one or more limit slots on the outside of the through hole; and the adjustment knob is covered on the outside of the base, and the inside is provided with an operating space for the base to pass through, and for the base to One side of the connecting part is exposed outside the operating space, and the sliding wall facing the at least one or more through holes and the driving part facing the limiting part are respectively provided inside the operating space, and the sliding The wall surface is provided with a pressing side and a retreating side for pushing at least one or more than one of the limiting spheres into and out of at least one or more of the through holes, and the driving part is protruded with a At least one or more clamping protrusions that slide in and out of the at least one or more than one limit slot, and a marking portion is provided on the outside of the adjustment knob relative to the at least one or more clamping protrusions, and The base is provided with at least two opposite through-holes on at least two opposite walls of the inner shaft hole, which penetrate outwards in the direction perpendicular to the shaft hole, and are respectively movable and installed in the at least two opposite through-holes. The limiting sphere, and the limiting part on the outer side of the base are provided with two relative limiting grooves respectively aligned with the at least two relative through holes, and the two limiting grooves are used for the locking protrusion to make a sliding Move in and out, and the other two opposite sides of the adjacent preset angles of the two relative limit grooves are respectively provided with a pause card slot, and the two stop card slots are used for the card protrusion to slide in and out. The board-to-board positioning device as described in claim 1, wherein the limiting part is located between the two phases The other two opposite sides of the adjacent predetermined angle of the limiting groove are respectively provided with a suspension card slot, and the predetermined angle is between 60°-120°, and the preferred predetermined angle is 90°. The board-to-board positioning device as described in claim 1, wherein the connecting part on the side of the base includes a sleeve ring for the limit washer to be sleeved, and a ring for the preset first board to be embedded in the first positioning hole. Embedded groove. The board-to-board positioning device as described in claim 1, wherein the operating space inside the adjustment knob includes two adjacently stacked sliding walls and the driving part for the connecting part on one side of the base to be driven by the driving part Penetrating through the sliding wall surface to expose the outside of the adjustment knob, and the operation space is provided with two adjacent stacked sliding wall surfaces and the driving part, and the sliding wall surface is aligned with the locking mechanism of the driving part. The convex body is provided with the pressing side with a smaller inner diameter, and adjacent to the pressing side is a retreating side with a larger inner diameter, and the inner diameters of the pressing side and the retreating side are both smaller than the operating space size. The board-to-board positioning device as described in Claim 1, wherein the outside of the adjustment knob is provided with a marking part in the form of a convex rod, a marking part in the shape of a cylinder, or a marking part in the shape of a plate. A board-to-board positioning device, which includes a base, an adjustment knob and a shaft seat, wherein: the base has a through shaft hole inside, and at least one or More than one through hole, at least one or more of the through holes are equipped with a limit ball inside, and the two sides outside the base are respectively provided with a connecting part and a limit part, and the limit part is provided with a pair of At least one or more limit slots located in at least one or more of the through holes; the adjustment knob is covered on the outside of the base, and the inside is provided with an operating space for the base to pass through , and the connecting part on one side of the base is exposed outside the operating space, and the sliding wall facing at least one or more of the through holes and the driving part facing the limiting part are respectively provided inside the operating space. part, and the sliding wall is provided with a pressing side and a retreating side for pushing at least one or more than one limit ball into and out of at least one or more of the through holes, and the driving part is protruded with a The limiting part rotates and slides in and out of the at least one or more locking protrusions at the at least one or more limiting grooves, and is on the outside of the entire knob relative to the at least one or more locking protrusions There is a marking part, and the base is provided with at least two opposite through holes penetrating outward in the direction perpendicular to the axial hole on at least two opposite walls of the inner shaft hole, and at least two opposite through holes are arranged on the at least two oppositely disposed through holes. The spacer spheres are movably installed in the holes, and the spacer part on the outer side of the base is provided with two relative spacer grooves respectively aligned with the at least two opposite through holes, and the two spacer grooves are used for the card The convex body is made to slide in and out, and the other two opposite sides of the two relative limit grooves are respectively provided with a pause card slot, and the two pause card slots are used for the card system convex body to make a slide. move in and out; and the shaft seat system includes a seat body located outside the base, a shaft rod extending outward from one side of the seat body for the shaft hole of the base to be sleeved and inserted, and the shaft rod suspended side is provided There is a stop body passing through at least one or more of the through holes, and the shaft between the stop body and the seat is provided with at least one or more of the through holes for alignment, and for At least one or more of the limiting balls located in the at least one or more of the through holes are movable clamped or withdrawn from the concave ring groove. The board-to-board positioning device according to claim 6, wherein the shaft seat includes the seat body whose outer diameter is larger than the outer diameter of the base and smaller than the outer diameter of the adjustment knob, and the outer diameter extends outward from one side of the seat body The shaft is smaller than the shaft hole, and opposite to the shaft, there is a pre-set on the other side of the base The second positioning hole of the second plate is set to be embedded in the connecting side of the positioning. The board-to-board positioning device as described in claim 6, wherein the shaft seat extends outward from one side of the seat body, and the side of the stopper body provided on the floating side is provided with a tapered inclined extension To the first guide inclined surface at the concave ring groove, a second guide inclined surface that is tapered outwards is provided on the other side of the stop body opposite to the first guide inclined surface. When assembling, it is arranged in the through hole of the base The position-limiting sphere is displaced along the second guide slope and crosses the stop body, then enters the first guide slope and is clamped in the concave ring groove of the shaft to form a position.

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