CN108799286B - Positioning device - Google Patents

Abstract

The present invention provides a positioning device, wherein a rotation space is provided on one side of the internal perforation of the sleeve, a limiting ring body is provided on the top of the outer side, and a first limiting groove, two second limiting grooves and a convex ring between the two second limiting grooves are provided on the outer edge of the limiting ring body, and a positioning element inserted into the perforation and an elastic element sleeved on the positioning element are provided on the bottom surface of the rod head of the outer screw-on element of the sleeve, and the rod head is positioned in the assembly space of the driving sleeve body, and a long convex rod and two short convex rods are provided in the sliding inner hole covering the outer side of the limiting ring body on one side of the assembly space, respectively corresponding to the first limiting groove and the two second limiting grooves, when the locking operation is performed, the driving sleeve body can rotate in both directions, and can only rotate in one direction when the unlocking operation is performed, so as to achieve the purpose of easily identifying the locking or unlocking state by means of different operating feel.

Description

Positioning means

technical field

The invention relates to a positioning device, in particular, after the driving sleeve body outside the sleeve is pressed down, the twisting element in the sleeve can be rotated to perform the locking operation. However, the twisting element can only be unlocked. Through the reverse one-way rotation, the locked or unlocked state can be known by the feel of the rotation, so as to achieve the purpose of simple and fast operation.

Background technique

Press, when the general panel (board-to-board) is assembled, it is locked by a set screw with a knob, a collar and a screw, and the screw and the collar can be fixed on the first panel, and rotated on The knob locks the screw into the second panel to form a preset position. After locking the screw with a hand tool, the first panel and the second panel are locked and fixed as a whole, and can be used in telecommunication office cabinets and industrial computers. , working master machine and other equipment composed of multiple devices and mechanisms are used for board-to-board connection.

However, if the user neglects to carry a suitable hand tool, it will affect the overall disassembly and assembly operation, so the industry has developed another method that can be used by the user to fix or separate the board by hand rotation. For the positioning device, please refer to Figures 9 and 10. It can be clearly seen from the figures that a through hole A1 is formed through the sleeve A, and a limit ring A2 is protruding from the outer edge of the top of the sleeve A, and A plurality of grooves A21 arranged at intervals are cut on the surface of the limit ring A2, and between any two adjacent grooves A21 of the limit ring A2, two first ring edges A22 with enlarged outer diameters are respectively formed, and the other two are opposite to each other. The peripheral edge forms two second ring edges A23 with a reduced outer diameter and staggered arrangement with the two first ring edges A22, and then the rotating rod body B1 of the twist element B is penetrated in the through hole A1, and the bottom of the rotating rod body B1 is formed. A rotating rod B2 is passed through, and a rod head B3 exposing the outside of the sleeve A is provided on the top of the rotating rod body B1, and an elastic body B4 for resisting the inside of the through hole A1 is sleeved on the rotating rod body B1, and the An outer sleeve C is assembled on the outside of the turnbuckle element B, and an installation space C1 for assembling the rod head B3 is formed inside the outer sleeve C, and one side of the installation space C1 is provided with a cover covering the outside of the limit ring A2 in a longitudinal direction. Displaced sliding hole C2, and then two opposite long convex rods C21 and two oppositely arranged short convex rods C22 adjacent to the two long convex rods C21 are arranged on the inner wall of the sliding hole C2, and each long convex rod C22. The rod C21 and the short protruding rod C22 are respectively aligned and locked in the grooves A21 on the outer edge of the limit ring A2, and the outer top of the outer sleeve C is provided with a sharp-angle-shaped pulling part C3, and then the outer top of the outer sleeve C faces outwards. The top surface of the sleeve C is provided with an indicator portion C4 with an opening and closing mark. When the sleeve A is positioned on the preset positioning plate (not shown in the figure), the outer sleeve C can drive the turning element B. Rotate the rod body B1 to carry out vertical lifting and lowering displacement along the through hole A1 of the sleeve A, so that the rotary rod B2 of the turnbuckle element B passes through the hole of the preset fixing plate body (not shown in the figure), and then rotates the outer sleeve by turning the outer casing. The pulling part C3 of the cylinder C rotates the outer sleeve C by 90 degrees clockwise or counterclockwise, and then drives the rotating rod B2 to rotate and clamp on the bottom surface of the preset fixed plate, so as to achieve the preset positioning plate with bare hands. It is locked together with the preset fixed plate body.

However, since the two first ring edges A22 and the two second ring edges A23 of the limiting ring A2 of the sleeve A are staggered, and the two long protruding rods on the inner wall of the sliding hole C2 of the outer sleeve C C21 and the two short protruding rods C22 are arranged oppositely, so when the outer sleeve C is pressed down and rotated, the two long protruding rods C21 of the outer sleeve C can only face the two second rings with smaller outer diameters at the same time. Rotate in the direction of side A23, so that whether the outer sleeve C is in the locked or unlocked state, it can only be used in a single direction (clockwise or counterclockwise) reciprocating rotation, so that when the rotary rod B2 After being locked on the preset fixed plate, subsequent users cannot know that the twist element B is in the locked or unlocked state by rotating (because the locking or unlocking is rotated by 90 degrees), resulting in It affects the time and smoothness of the overall disassembly and assembly operation, and is not only time-consuming and inconvenient, but also has to further process the indicator C4 on the top surface of the outer sleeve C, so that the locking and unlocking of the positioning device can be understood. direction, thereby increasing the cost of processing operations.

In addition, most of the general positioning devices are installed in the cabinets of telecommunications bureau cabinets, industrial computers, work masters, servers and other equipment. Due to the dim light inside the cabinets, the indicator C4 of the outer sleeve C of the positioning device is not easy to see and identify. As a result, the user can only feel whether the lock or unlock state is in the locked or unlocked state in the operation, and the operation feeling during locking or unlocking is the same, resulting in a lot of inconvenience during use.

Therefore, how to solve the above-mentioned existing problems and deficiencies is the direction that relevant manufacturers in this industry are eager to study and improve.

SUMMARY OF THE INVENTION

Therefore, in view of the above problems and deficiencies, the inventor collected relevant information, evaluated and considered from various parties, and designed the invention of such a positioning device through continuous trial production and modification with years of experience accumulated in this industry. birth.

For achieving the above object, the technical scheme adopted in the present invention is:

A positioning device, characterized in that it comprises a sleeve, a twist element and a driving sleeve, wherein:

The inside of the sleeve has a hollow through hole, and a rotating space with a larger diameter is arranged on one side of the through hole, and the sleeve is adjacent to the outer side of the rotating space with a fixing hole for combining with the preset first plate. The fixing part is located at the fixing part, and a limit ring body with a larger outer diameter protrudes from the other side of the sleeve relative to the fixing part; Second limit slots are respectively provided on two sides of a limit slot, and a convex ring with an enlarged outer diameter is formed between the two second limit slots;

The turnbuckle element is movably assembled at the through hole of the sleeve, and has a rod head located above the sleeve, and the bottom surface of the rod head extends downward with a positioning element for penetrating into the through hole, and the positioning element has a rod body, And a positioning part located in the rotating space is arranged at the bottom of the rod body, and an elastic element for elastically supporting against the bottom surface of the rod head and the inside of the perforation is sleeved outside the positioning element;

The drive sleeve body is assembled outside the spinner element, and an assembly space for assembling the rod head of the spinner element is formed inside, and one side of the assembly space is provided with a limit ring body for covering the sleeve in a longitudinal direction. Displaced sliding inner hole, and the inner wall surface of the sliding inner hole is provided with a long protruding rod for alignment and clamping in the first limiting slot of the limiting ring body, and two sides of the long protruding rod are provided. There are two short protruding rods with relatively short lengths for the alignment and clamping of the two second limit slots of the limiting ring body, and there are formed on the opposite inner sides of the two short protruding rods for the limit along the position The outer edge of the ring is in a reciprocating rotation area. Before the driving sleeve is pressed down, the convex ring stops at the two short protruding rods, and when the driving sleeve is pressed and rotated, the positioning part of the positioning element is rotated and held After presetting the through hole of the second plate body, the protruding ring stops at the long protruding rod.

The positioning device, wherein: between the through hole of the sleeve and the rotating space, there is a shaft hole with a reduced diameter and for the positioning element of the spinner element to pass through, and then an elastic element is formed at the position adjacent to the through hole and the shaft hole. The abutting shoulder is supported and is inclined, and a stop surface for stopping at the top surface of the positioning part of the positioning element is formed at the inner side of the rotating space adjacent to the shaft hole.

The positioning device, wherein: the two second limit slots of the limit ring body are respectively arranged at 90-degree angular positions adjacent to the periphery of the first limit slot, and the two second limit slots are located between the two second limit slots. The formed protruding ring is arranged at the remaining 180-degree angular position, and two short protruding rods with relatively short lengths are arranged at 90-degree angular positions on both sides of the long protruding rod on the inner wall of the sliding inner hole.

The positioning device, wherein: an annular fitting body is protruded from the outer surface of the peripheral edge of the rod head of the turnbuckle element, and a clamping groove with a larger diameter and for assembling and positioning the annular fitting body is arranged inside the assembly space.

The positioning device, wherein: the center of the rod head of the twist element is provided with a butt hole, and the positioning element of the twist element relative to the other side of the positioning part is provided with a hole for fitting and fixing in the butt hole. combination.

The positioning device, wherein: two opposite sides of the positioning part of the positioning element are outwardly protruded with a plurality of stop blocks for stopping at the bottom surface of the through hole of the predetermined second plate body.

The positioning device, wherein: the height difference between the long protruding rod and the short protruding rod of the sliding inner hole of the driving sleeve body is greater than or equal to the thickness of the limiting ring body of the sleeve.

The positioning device, wherein: the outer surface of the driving sleeve is provided with a gripping portion, and the gripping portion is provided with an elongated pulling block facing outward at the position of the long protruding rod.

The main advantage of the present invention lies in that the inside of the sleeve is provided with a rotating space with a larger diameter on one side of the perforation, the sleeve is provided with a fixing portion adjacent to the outer side of the rotating space, and the sleeve is opposite to the other side of the fixing portion. A limit ring body with a larger outer diameter is protruded at the position, and a first limit slot is cut at the periphery of the limit ring body, and a second limit slot is respectively provided on both sides of the first limit slot. A convex ring with an enlarged outer diameter is formed between the two second limit clamping grooves, and a rod head of a twist element is provided above the sleeve, and the bottom surface of the rod head is provided with a rod head for penetrating into The positioning element in the through hole and the elastic element sleeved by the positioning element to elastically support the bottom surface of the rod head and the inside of the through hole, and then assemble the rod head of the rotary element in the assembly space of the driving sleeve body, and one side of the assembly space is located. There is a sliding inner hole for the cover to cover the outer part of the limiting ring body for longitudinal displacement, and the inner wall surface of the sliding inner hole is provided with a first limiting slot and two second limiting grooves for positioning and clamping on the limiting ring body. The long protruding rods and the two short protruding rods in the two limit slots can rotate axially in both directions when the driving sleeve is pressed and locked, and the protruding ring will be locked after the twist element is locked. The long protruding rod on the inner wall of the inner hole is blocked from sliding, so the driving sleeve can only be rotated back in one direction to perform the unlocking process, and the user can easily identify the turnbuckle through the difference in the operating feel of the driving sleeve. The components are in a locked state or an unlocked state, so that the user can intuitively operate easily and quickly, so as to achieve the purpose of improving the convenience and smoothness of installation or disassembly.

The secondary advantage of the present invention is that the long protruding rod and the two short protruding rods in the sliding inner hole of the driving sleeve body are respectively along the first limit slot, two second limit grooves of the limit ring body of the sleeve. The limit slot carries out vertical lifting and displacement, and the positioning part on one side of the positioning element of the driving sleeve body simultaneously drives the rotary element to enter and exit the rotating space on the side of the sleeve longitudinally. It does not need to use any hand tools. , Easy operation to lock or unlock the preset first plate and second plate, thereby achieving the purpose of saving time and effort.

Another advantage of the present invention is that before the driving sleeve body is pressed down, the protruding rings of the limiting ring body are two short protruding rods that can stop the inner wall surface of the inner hole from sliding, so as to prevent the driving sleeve body from generating axial Rotation, so that the positioning part on the side of the positioning element can indeed pass through the through hole of the second plate, and when the driving sleeve is pressed down and rotated, its convex ring can be used to block the long convex rod on the inner wall of the inner hole from sliding. , so that the driving sleeve body can only be turned back in the reverse direction of rotation, so as to have a good foolproof effect, so as to achieve the purpose of improving the smoothness of use.

Another advantage of the present invention is that when the positioning element of the turnbuckle element is longitudinally displaced by the driving sleeve body, since the length of the positioning element is greater than that of the sleeve, the positioning portion on one side of the positioning element will protrude to the sleeve. Outside, at this time, if there is no second plate under the first plate, the positioning part of the positioning element will be affected by the reset of the elastic element, and then retracted into the sleeve, so as not to have a clamping effect, and then for the user It can be known by the operating feel that there is no second plate for locking under the first plate, which has a good foolproof effect, so as to achieve the purpose of improving the reliability of the assembly.

Description of drawings

FIG. 1 is a perspective external view of the present invention.

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

3 is an exploded perspective view of the present invention from another perspective.

Figure 4 is a side sectional view of the present invention.

Figure 5 is a side sectional view of the invention in operation.

6A-6C are top sectional views of the rotating action of the driving sleeve of the present invention.

Figure 7 is a side sectional view of the present invention in operation from another viewing angle.

8 is a side sectional view of the present invention after operation from another viewing angle.

FIG. 9 is an exploded perspective view of a conventional structure.

FIG. 10 is an exploded perspective view of the conventional structure from another perspective.

Description of reference numerals: 1-sleeve; 10-perforation; 101-abutment shoulder; 11-rotation space; 111-stop surface; 12-shaft hole; 13-fixed part; 14-limiting ring body; 141-first limit slot; 142-second limit slot; 143-convex; 2-swivel element; 21-rod head; 210-butt hole; 211-fitted body; 22-positioning element; 221 -Joint part; 222-Rod body; 223-Positioning part; 2231-Stopping block; 23-Elastic element; 3-Drive sleeve; 30-Assembly space; 301-Clamping groove; Long protruding rod; 312-short protruding rod; 32-swivel interval; 33-holding part; 331-pulling block; 4-first plate; 40-fixing hole; 5-second plate; 50-through hole; A -Sleeve; A1-perforation; A2-limiting ring; A21-groove; A22-first ring edge; A23-second ring edge; B-spinning element; B1-rotating rod body; B2-swivel rod; B3-rod head; B4-elastic body; C-outer sleeve; C1-installation space; C2-sliding hole; C21-long protruding rod; C22-short protruding rod; C3-pulling part; C4-indicating part .

Detailed ways

In order to achieve the above objectives and effects, the technical means used in the present invention, its structure, and implementation methods, etc., are described in detail with reference to the preferred embodiment of the present invention, and its features and functions are as follows, so as to be fully understood.

Please refer to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, which are the three-dimensional appearance view, the three-dimensional exploded view, the three-dimensional exploded view and the side cross-sectional view of the present invention, which can be clearly seen from the drawings. , the positioning device of the present invention includes a sleeve 1, a twist element 2 and a driving sleeve body 3, wherein:

The sleeve 1 has a hollow through hole 10 inside, and a rotating space 11 with a larger diameter is provided on one side of the through hole 10, and a shaft hole 12 with a reduced diameter is formed between the through hole 10 and the rotating space 11, An inclined bearing shoulder 101 is formed at the adjacent position of the through hole 10 and the shaft hole 12, and a stop surface 111 is formed at the inner side of the rotation space 11 adjacent to the shaft hole 12, and the sleeve 1 is adjacent to the rotation space A fixing portion 13 is provided at the outer side of 11, and a limiting ring body 14 with a larger outer diameter protrudes from the other side of the sleeve 1 relative to the fixing portion 13, and a first stop ring body 14 is cut at the periphery of the limiting ring body 14. The limit slot 141 is provided with a second limit slot 142 on both sides of the first limit slot 141 respectively, and a convex ring 143 with an enlarged outer diameter is formed between the two second limit slots 142 .

The turnbuckle element 2 includes a rod head 21, a positioning element 22 and an elastic element 23, wherein an annular fitting body 211 is protruded from the outer surface of the peripheral edge of the rod head 21, and a butt hole 210 is drilled in the center of the rod head 21. In addition, an embossed joint portion 221 above the positioning element 22 is fixed in the docking hole 210 , a rod body 222 extends below the joint portion 221 , and a positioning portion 223 is provided below the rod body 222 , and the two opposite sides of the positioning portion 223 face toward each other. A plurality of stop blocks 2231 are protruded outwardly, and an elastic element 23 can be sleeved on the rod body 222 of the positioning element 22 .

A hollow assembly space 30 is formed inside the drive sleeve 3 , and a clamping groove 301 with a larger diameter is formed inside the assembly space 30 , and a sliding inner hole penetrating outward is provided at one side of the clamping groove 301 . The inner wall of the sliding inner hole 31 is provided with a long protruding rod 311, and two short protruding rods 312 with relatively short lengths are arranged on both sides of the long protruding rod 311, and the upper part of the two short protruding rods 312 and the A rotation section 32 is formed at the opposite inner side of the long protruding rod 311 , and a gripping portion 33 is provided on the outer surface of the driving sleeve 3 , and the gripping portion 33 is provided with a long strip-shaped pull toward the outside at the position of the long protruding rod 311 . Block 331.

When the above components are assembled, the positioning element 22 of the turnbuckle element 2 is first movably inserted into the through hole 10 and the shaft hole 12 of the sleeve 1, so as to provide the plurality of stop blocks 2231 of the positioning portion 223 on one side of the positioning element 22. It can be held against the stop surface 111 inside the rotating space 11, thereby preventing the positioning element 22 from withdrawing from the through hole 10 of the sleeve 1 and the outside of the shaft hole 12, so that the positioning portion 223 of the positioning element 22 can be located in the rotating space. 11 to perform longitudinal movement in and out of displacement, and the rod head 21 on the other side of the positioning element 22 will be exposed above the through hole 10 of the sleeve 1, and the rod body 222 of the positioning element 22 is sleeved. The elastic element 23 is respectively supported against the shoulder 101 inside the through hole 10 and the bottom surface of the rod head 21 of the turnbuckle element 2, and the annular fitting body 211 of the rod head 21 can be reused to provide the assembly space for the drive sleeve 3 The clamping groove 301 on one side of the assembly space 30 is assembled, so that the sliding inner hole 31 on the other side of the assembly space 30 is movably sleeved on the outer side of the limiting ring body 14 of the sleeve 1, and the sliding inner hole 31 The long protruding rod 311 and the two short protruding rods 312 on the wall are respectively positioned in the first limiting slot 141 and the two second limiting slots 142 on the surface of the limiting ring body 14, and the two The short protruding rods 312 are stopped and limited by the protruding ring 143 of the limiting ring body 14 to avoid the axial rotation of the driving sleeve body 3 , and then the sleeve 1 , the twist element 2 and the driving sleeve body 3 are assembled to form the structure. Invented positioning device.

A first limit slot 141 is cut at the periphery of the limit ring body 14 on one side of the sleeve 1 , and a second limit slot 142 is respectively provided on both sides of the first limit slot 141 . The two second limit slots 142 are respectively disposed at 90-degree angular positions adjacent to the periphery of the first limit slot 141 , and the convex ring 143 formed between the two second limit slots 142 is disposed at the remaining 180 degrees. angular position.

Furthermore, the inner wall surface of the sliding inner hole 31 of the driving sleeve body 3 is provided with long protruding rods 311, and two short protruding rods 312 with relatively short lengths are provided at 90-degree angular positions on both sides of the long protruding rod 311. Moreover, a rotation interval 32 of about 180 degrees is formed above the two short protruding rods 312 and the opposite inner side of the long protruding rod 311 , and the height difference between the long protruding rods 311 and the short protruding rods 312 is greater than or equal to the limit ring body of the sleeve 1 14 , so that after the driving sleeve body 3 is pressed, the two short protruding rods 312 thereof can be released from the restriction of the two second limiting slots 142 of the limiting ring body 14 .

Please refer to Fig. 2, Fig. 4, Fig. 5, Fig. 6A-Fig. 6C, Fig. 7, Fig. 8, which are an exploded perspective view, a side sectional view, a side sectional view during operation, and a driving sleeve of the present invention. The top sectional view of the rotating action, the side sectional view during operation from another viewing angle, and the side sectional view after the operation from another viewing angle can be clearly seen from the figures. The fixing portion 13 is assembled at the fixing hole 40 of the first plate 4, and is combined with the second plate 5 below the first plate 4, and the through hole 50 through which the second plate 5 passes is a long rectangle, and For the fixing hole 40 of the first plate 4 and the lower part of the sleeve 1, the force can be applied to the surface of the driving sleeve 3 above the sleeve 1, so that the driving sleeve 3 can be pressed down longitudinally, and then the turnbuckle can be driven. The positioning element 22 of the element 2 is longitudinally displaced at the through hole 10 and the shaft hole 12, and by virtue of the bottom surface of the rod head 21 of the twist element 2, the elastic element 23 set outside the positioning element 22 is pressed. At this time, the positioning element 22 The positioning portion 223 at the bottom will withdraw to the outside of the rotating space 11 of the sleeve 1 to penetrate below the through hole 50 of the second plate 5 . The relatively short protruding rods 312 will then be displaced downward to escape the restriction of the two second limiting slots 142 on the surface of the limiting ring body 14 , and the limiting ring body 14 will enter into the two short protrusions In the turning section 32 formed between the upper part of the rod 312 and the two long protruding rods 311 , the flipping block 331 of the holding part 33 can be turned again, so that the long protruding rod 311 can move along the outer edge of the limiting ring body 14 . Counterclockwise (or clockwise) bidirectional rotation (rotate about 90 degrees, as shown in Figure 6A and Figure 6B ), and simultaneously drive the plurality of stop blocks 2231 on both sides of the positioning portion 223 to rotate axially, so as to connect with the second plate The through holes 50 of 5 is fixed on the bottom of the first plate 4 in a locked state, so as to achieve the effect of stable combination and not easy to loosen and detach.

When the second plate 5 is about to be separated from the first plate 4 , it only needs to be turned on the holding portion 33 of the driving sleeve body 3 again. The ring 143 stops, so the driving sleeve body 3 can only rotate in the reverse (one-way) direction (reverse rotation about 90 degrees), thereby driving the positioning portion 223 of the positioning element 22 to rotate back and forth. The stopper 2231 is aligned parallel to the long rectangular through hole 50 of the second plate 5 (as shown in FIG. 6A ). The long protruding rod 311 of the sleeve body 3 moves longitudinally along the first limit slot 141 of the limit ring body 14 of the sleeve 1 , so that the limit ring body 14 is separated from the rotation area 32 of the drive sleeve body 3 At the same time, the long protruding rod 311 and the two short protruding rods 312 are again clamped in the first limiting slot 141 and the two second limiting slots 142 of the limiting ring body 14 respectively, and the elastic element 23 is also Continue to press against the bottom surface of the rod head 21 of the turnbuckle element 2 to link the positioning element 22 to lift longitudinally in the through hole 10 and the shaft hole 12 , so that the positioning part 223 on one side of the positioning element 22 passes through the through hole of the second plate 5 After 50 minutes, it enters into the rotation space 11 under the sleeve 1, so that the plurality of stop blocks 2231 of the positioning portion 223 abut against the stop surface 111 inside the rotation space 11 again, and the second plate 5 is released. The limit locking means that the second plate 5 can be separated from the first plate 4 in an unlocked state, so that the driving sleeve 3 can rotate above the sleeve 1 to drive the turnbuckle element 2 along the through hole 10 of the sleeve 1. , The shaft hole 12 is used for vertical lifting displacement, which does not need to use any hand tools, and only needs to rely on simple and easy operations to combine (lock) or disengage (unlock) the first plate 4 and the second plate 5, thereby achieving considerable savings. Time and labor-saving effect.

In the process of pressing and locking, the above-mentioned driving sleeve 3 can rotate in two directions, and in the process of unlocking, it can only rotate in one direction back in the direction of turning in, so that the user can have a distinct difference in operating feeling. , the user can easily identify whether the turnbuckle element 2 is in the locked state or the unlocked state by whether it can be rotated both clockwise and counterclockwise. The effect of improving the convenience and smoothness of installation or disassembly.

In addition, a convex ring 143 with an enlarged outer diameter is formed between the two second limiting grooves 142 of the limiting ring body 14 of the sleeve 1. When the driving sleeve body 3 is pressed down, the convex ring 143 can be used for blocking. The two short protruding rods 312 on the inner wall surface of the inner hole 31 to prevent slippage prevent the drive sleeve 3 from rotating axially, so that the positioning part 223 on the side of the positioning element 22 can pass through the through hole 50 of the second plate 5. , and when the driving sleeve body 3 is pressed down and rotated, its convex ring 143 can be used to block the long protruding rod 311 on the inner wall surface of the sliding inner hole 31, so that the driving sleeve body 3 can only be turned back in the reverse direction of rotation, In order to have a good fool-proof effect, so as to achieve the effect of improving the fluency of use.

In addition, the length of the positioning element 22 of the above-mentioned turnbuckle element 2 is greater than the length of the sleeve 1, so when the sleeve 1 is fixed on the first plate 4 and the positioning element 22 is longitudinally displaced by the driving sleeve body 3, its positioning element The positioning portion 223 on the side of 22 will protrude to the outside of the sleeve 1. At this time, if the second sheet 5 is not provided under the first sheet 4, the positioning portion 223 of the positioning element 22 will be reset by the elastic element 23. Influence, and retracted into the sleeve 1 so as not to have a holding effect, so that the user can know that there is no second plate 5 for locking under the first plate 4 by operating the feel, so it has a good effect. Fool-proof effect, in order to achieve the effect of improving the reliability of assembly.

The above detailed description is only for a preferred feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the present invention. All modifications and changes shall be included in the patent scope covered by the present invention.

Claims (6)

1. A positioning device, characterized in that: comprising a sleeve, a twist element and a drive sleeve, wherein: The inside of the sleeve has a hollow through hole, and a rotating space with a larger diameter is arranged on one side of the through hole, and the sleeve is adjacent to the outer side of the rotating space with a fixing hole for combining with the preset first plate. The fixing part is located at the fixing part, and a limit ring body with a larger outer diameter protrudes from the other side of the sleeve relative to the fixing part; Second limit slots are respectively provided on two sides of a limit slot, and a convex ring with an enlarged outer diameter is formed between the two second limit slots; The turnbuckle element is movably assembled at the through hole of the sleeve, and has a rod head located above the sleeve, and the bottom surface of the rod head extends downward with a positioning element for penetrating into the through hole, and the positioning element has a rod body, And a positioning part located in the rotating space is arranged at the bottom of the rod body, and an elastic element for elastically supporting against the bottom surface of the rod head and the inside of the perforation is sleeved outside the positioning element; The drive sleeve body is assembled outside the spinner element, and an assembly space for assembling the rod head of the spinner element is formed inside, and one side of the assembly space is provided with a limit ring body for covering the sleeve in a longitudinal direction. Displaced sliding inner hole, and the inner wall surface of the sliding inner hole is provided with a long protruding rod for alignment and clamping in the first limiting slot of the limiting ring body, and two sides of the long protruding rod are provided. There are two short protruding rods with relatively short lengths for the alignment and clamping of the two second limit slots of the limiting ring body, and there are formed on the opposite inner sides of the two short protruding rods for the limit along the position The outer edge of the ring is in a reciprocating rotation area. Before the driving sleeve is pressed down, the convex ring stops at the two short protruding rods, and when the driving sleeve is pressed and rotated, the positioning part of the positioning element is rotated and held After presetting the through hole of the second plate body, the protruding ring stops at the long protruding rod; The two second limit slots of the limit ring body are respectively arranged at 90-degree angular positions adjacent to the periphery of the first limit slot, and the convex ring formed between the two second limit slots is arranged at the remaining position. 180-degree lower angular position, and two short protruding rods with relatively short lengths are arranged at 90-degree angular positions on both sides of the long protruding rod on the inner wall surface of the sliding inner hole; The height difference between the long protruding rod and the short protruding rod of the sliding inner hole of the driving sleeve body is greater than or equal to the thickness of the limiting ring body of the sleeve. 2. The positioning device according to claim 1, characterized in that: between the through hole of the sleeve and the rotating space, there is a shaft hole with a reduced diameter and for the positioning element of the spinner element to pass through, and then between the through hole and the shaft An inclined bearing shoulder for the elastic element is formed at the adjacent position of the hole, and a stop surface is formed at the top surface of the positioning part of the positioning element at the inner side of the rotation space adjacent to the shaft hole. 3 . The positioning device according to claim 1 , wherein a ring-shaped fitting body is protruded from the outer surface of the peripheral edge of the rod head of the turnbuckle element, and the inner side of the assembly space is provided with a larger aperture for assembling the ring-shaped fitting body. 4 . Locating the retaining slot. 4 . The positioning device according to claim 1 , wherein the center of the rod head of the turnbuckle element is provided with a butt hole, and the positioning element of the turnbuckle element is provided with a hole on the other side relative to the positioning portion. Fitted and fixed to the joint in the butt hole. 5 . The positioning device according to claim 1 , wherein the positioning portion of the positioning element is provided with a plurality of stoppers for stopping at the bottom surface of the through hole of the predetermined second plate body protruding outward from two opposite sides of the positioning element. 6 . piece. 6 . The positioning device according to claim 1 , wherein a gripping portion is provided on the outer surface of the driving sleeve, and the gripping portion is provided with an elongated pulling block facing outward at the position of the long protruding rod. 7 .

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