TWM470176U - Fixing device - Google Patents

Description

Fixtures

The present invention provides a fixing device, in particular, a through hole is inserted into a fixing member of the sleeve, and an outer sleeve is coupled to the fixing member. When the fixing member is withdrawn, the ring can be resisted by the annular sleeve of the outer sleeve. The action of withdrawing on the convex part of the ring of the sleeve allows the user to quickly separate the board from the board by the torque rotation and saves labor.

Pressing, the general panel (board-to-board) is assembled by using a positioning screw with a knob, a collar and a screw to fix the screw and the collar to the first panel, and to rotate The knob is used to lock the screw into the second panel to form a preset position, and then the hand tool is used to lock the screw, so that the first panel and the second panel are locked and fixed into one body, and can be used in a telecom cabinet, an industrial computer. The working machine and the like use a device composed of a plurality of devices and a mechanism to be used for board-to-board connection.

Furthermore, some manufacturers have developed such a floating screw composed of a cap, a screw and a positioning seat, and fastened the positioning seat of the floating screw to the perforation of the plate, and then locked the screw with another screw. The plate is fixed, and when the user removes the plate, the floating screw can still be fixed in the perforation of the plate through the positioning seat without loss, please refer to Figure 12, as can be clearly seen from the figure, The sleeve A is assembled with a locking member B, and an elastic body A1 is sleeved on the outside of the sleeve A, and one end of the elastic body A1 is a retaining ring A that abuts against the sleeve A. 2, while the other end of the elastic body A1 is abutted against the inner side of the cap B1 of the lock member B, the screw B2 extending at the side of the cap B1 can be inserted into the accommodating space A0 inside the sleeve A, The stopper body A3 disposed at the inner side of the accommodating space A0 is blocked between the screw B2 of the lock member B and the sleeve A, and the screw B2 of the lock member B is worn out of the sleeve A. The outer part of the accommodating space A0 is further connected with a nut C on the screw B2, so that the welding section A4 formed by the sleeve A at the bottom of the retaining ring A2 is welded to the plate D, and the locking member B is utilized. After being locked on another mating plate, it is integrated into one body.

In this way, although the sleeve A can be prevented from being welded on the plate D, the gap between the sleeve A and the locking member B is offset or shaken to prevent the perforation of the plate D from colliding when the locking member B is locked. (not shown in the figure) problems such as wear and disintegration are not easy to cause damage to the structure of the sheet D. However, in the process of welding the sleeve A to the sheet D, the solder layer is heated by the tin furnace. After that, it penetrates into the nut C along the small gap between the sleeve A and the perforation, so that the blockage or the jamming is easily formed after passing through the tin furnace, and the worker removes the nut C from the lock member B by using the tool. At this time, slippage or wear occurs, which causes inconvenience and difficulty in disassembling the nut C, and the overall labor and cost are relatively increased.

However, some manufacturers have developed another kind of locking device that can make the board-to-board separation fast and labor-saving. Please refer to the thirteenth figure. It can be clearly seen from the figure that the sleeve E is worn inside. There is a locking unit F, and a screw segment F2 and a thread segment F3 are sequentially disposed on the force receiving portion F1 of the locking unit F, and a flange E1 for the sleeve E is embedded at the periphery of the screw segment F2. The clamping groove F21 is formed in the movable joint, and the clamping groove (not shown) at the bottom of the sleeve E can be embedded in the plate member G, and then a rotating external force is applied to the lock by the hand tool. The force receiving portion F1 of the unit F has its threaded section F3 laterally locked to the base H when the locking unit is to be removed. When F is removed from the base H, a reverse rotation external force may be applied to the locking unit F, and the thread segment F3 will be disengaged from the base H, and the pulling sleeve E will remove the plate G, thereby achieving Quick and labor-saving effect of board-to-board separation.

However, the flange E1 of the sleeve E is embedded in the groove F21 of the screw section F2 of the locking unit F, and the thread segment F3 protrudes out of the sleeve E and the plate G, when the plate G is oriented When the lower cover is attached to the base H, the yoke displacement of the plate member G is often caused by the threaded portion F3 of the locking unit F colliding with the base H, so that the thread segment F3 cannot be accurately locked laterally on the base H. Structural damage or damage, and due to the increasing popularity of today's industrial computers, work machines and other equipment, the board G and the base H are usually provided with connectors, when the board G is covered with the base After H is up, the connector can be mated and docked. However, if the plate G is yawed or skewed, it will cause alignment between the connectors, and even the collision will cause structural damage. The stability of the overall signal transmission is the direction for those who want to work in this industry.

Therefore, in view of the above-mentioned problems and deficiencies, the new creators have collected and collected relevant data through various evaluations and considerations, and have used the trial and modification of many years of research and development experience in this industry to design a new type of such fixed device.

The main purpose of the present invention is that a positioning portion disposed at a hole of the first plate body is disposed below the through hole of the sleeve, and a ring convex portion is disposed adjacent to the positioning portion outside the sleeve, and The through hole of the sleeve penetrates the shaft and the screw portion extending downward from the bottom surface of the fixing member head, and the annular body is formed at the periphery of the shaft adjacent to the upper portion of the hole. The upper protruding portion, when the screwing portion of the fixing component is locked in the locking hole of the second plate body, The annular abutting body at the lower part of the inner casing accommodating space of the joint of the fixed component can be abutted on the ring protrusion of the sleeve to form a movable socket, and when the screwing part of the fixing component is withdrawn, The first plate body is interlocked with the sleeve by the outer sleeve and the second plate body is detached, so that the user can quickly separate the first plate body by the torque rotation, and has the operation simple and the board-to-board Separation is more labor-saving.

The secondary purpose of the present invention is that the elastic member is sleeved on the outside of the sleeve, and the shaft of the fixing member is inserted downward into the perforation, and then punched onto the head by a pressing mold. Pushing the bottom surface of the head against the annular blocking portion of the sleeve to deform and reduce the aperture, and elastically supporting the head of the fixing member by the elastic member, and interlocking the protruding portion against the annular blocking portion The stop positioning is formed to make the sleeve, the fixing element and the outer sleeve exhibit a movable docking state to effectively prevent the fixing component from coming out of the sleeve.

Another object of the present invention is that when the sleeve is assembled with the first plate body, the outer sleeve is pressed downward downwardly, so that the annular abutting body of the outer sleeve abuts against the annular protrusion of the sleeve via the elastic After the process of deformation and resetting, the lower end of the ring convex portion can be formed by the annular abutting body to form a movable sleeve on the ring convex portion, so that the suction head of the suction device is adsorbed on the head for subsequent riveting or During the welding and other operations, the overall center of gravity remains stable, and the alignment assembly is more precise. It is also difficult to cause the offset or sway caused by the external force vibration due to the elastic member elastically supporting the head of the fixing member, and is assembled. After that, it can achieve the effect of positioning, improving the quality and yield of manufacturing and reducing the production cost.

A further object of the present invention is that when the first plate body (such as the panel) is closed down over the second plate body (such as the frame), the elastic element is elastically supported by the head before the fixing member is locked. An elastic deformation displacement at the bottom surface, and interlocking the convex portion against the annular resistance of the sleeve After the blocking portion, the screwing portion can be retracted into the through hole of the sleeve without protruding from the first plate body, so as to avoid the screwing portion of the fixing component colliding with the second plate body when the first plate body is closed The yaw displacement of the first plate body causes the screw joint portion to be incorrectly aligned with the lock hole of the second plate body, and even the fixing member is subjected to excessive impact shear force to cause cracks or breaks, or the screw is caused by inadvertent operation. The occurrence of a broken or broken joint occurs.

Another object of the present invention is that when the first plate body is affected by the external force, the annular abutting body of the outer sleeve can be abutted against the ring convex portion of the sleeve, and the elastic member elastically supports the head. The portion has a proper elastic pre-stress, so that the screwing portion of the fixing component is not easily rotated and exits from the locking hole of the second plate body, and has a stable blocking positioning and anti-loose effect.

1‧‧‧ sleeve

11‧‧‧Perforation

111‧‧‧Top surface

12‧‧‧ Positioning Department

121‧‧‧Round groove

122‧‧‧ internal thread

13‧‧‧ annular barrier

131‧‧‧ pushed top

132‧‧‧ stop surface

14‧‧‧ ring convex

141‧‧ ‧ blocking surface

142‧‧‧Resistance

2‧‧‧Fixed components

21‧‧‧ head

211‧‧‧ bottom

212‧‧‧Operation Department

213‧‧‧ docking

22‧‧‧ shaft

23‧‧‧ screw joint

231‧‧‧ external thread

24‧‧‧Protruding

241‧‧‧ by face

25‧‧‧Flexible components

3‧‧‧Outer casing

30‧‧‧ accommodating space

301‧‧‧fixed slot

31‧‧‧Ring-inhibiting body

32‧‧‧Turning Department

4‧‧‧ first board

41‧‧‧ hole

411‧‧‧ external thread

42‧‧‧ horizontal department

43‧‧‧Vertical

5‧‧‧Second plate

51‧‧‧Keyhole

A‧‧‧ sleeve

A0‧‧‧ accommodating space

A1‧‧‧ Elastomer

A2‧‧‧stop collar

A3‧‧‧ stop body

A4‧‧‧welding section

B‧‧‧Locks

B1‧‧‧ hat head

B2‧‧‧ screw

C‧‧‧ nuts

D‧‧‧ plates

E‧‧‧ sleeve

E1‧‧‧

F‧‧‧Locking unit

F1‧‧‧ Force Department

F2‧‧‧screw segment

F21‧‧‧ slotted

F3‧‧‧Threaded section

G‧‧‧Piece

H‧‧‧Base

The first picture is a three-dimensional appearance of the creation.

The second picture is a three-dimensional exploded view of the creation.

The third figure is a three-dimensional exploded view of another perspective of the creation.

The fourth figure is a side cross-sectional view of the original assembly.

The fifth figure is a side cross-sectional view of the original assembly.

Figure 6 is a side cross-sectional view of the preferred embodiment of the present invention after riveting.

Figure 7 is a side cross-sectional view of the preferred embodiment of the present invention after release.

Figure 8 is a side cross-sectional view of another preferred embodiment of the present invention.

The ninth drawing is a side cross-sectional view of a preferred embodiment of the present invention before being locked.

The tenth figure is a side cross-sectional view of the present preferred embodiment after being locked.

The eleventh figure is a side cross-sectional view of the present preferred embodiment after exiting.

Figure 12 is a side cross-sectional view of a conventional positioning device.

Figure 13 is a side cross-sectional view of a conventional locking device.

In order to achieve the above objectives and effects, the technical means and its construction adopted in the present invention are described in detail in the preferred embodiment of the present invention, and the structure and function are as follows.

Please refer to the first, second, third, fourth and fifth figures, which are respectively the three-dimensional appearance drawing, the three-dimensional exploded view, the three-dimensional exploded view of another perspective, the side cross-sectional view before assembly and the assembled side. Referring to the cross-sectional view, it can be clearly seen from the figure that the present invention comprises a sleeve 1, a fixing member 2 and an outer sleeve 3, wherein the hollow interior of the sleeve 1 has a longitudinal perforation 11 and is below the perforation 11 The positioning portion 12 is disposed, and an annular groove 121 is disposed on the outer surface of the positioning portion 12, and a flattened top surface 111 is formed outwardly at a periphery of the through hole 11 of the sleeve 1, and the top surface 111 is adjacent to the top surface An annular blocking portion 13 is formed at the through hole 11 , and an upper surface and a stop surface 132 are respectively formed on the upper and lower surfaces of the annular blocking portion 13 . Further, the outer portion of the sleeve 1 is adjacent to the positioning portion 12 . A ring-shaped convex portion 14 is disposed at a distance from the upper portion, and a flat blocking surface 141 and a curved arc-shaped resisting surface 142 which is turned downward from the blocking surface 141 are formed on the annular convex portion 14.

The fixing member 2 has a head portion 21 located above the sleeve 1 and extends downwardly from the bottom surface 211 of the head portion 21 to provide a shaft 22 that penetrates into the through hole 11 and a small outer diameter below the shaft 22. The threaded portion 23 has an external thread 231 on the threaded portion 23, and the shaft 22 of the fixing member 2 is formed outwardly adjacent to the threaded portion 23 to have an outer diameter larger than the shaft The protruding portion 24 of the protrusion 24 is formed with an inclined abutting surface 241 adjacent to the shaft 22, and the elastic member 25 is sleeved on the shaft 22, and the outer diameter of the elastic member 25 is Less than the head 21 and slightly larger than the outer diameter of the sleeve 1, and the surface of the head 21 of the fixing member 2 is provided with a cross, a hexagonal groove, a m-shaped groove, a hexagonal stud or other various types. The actuating portion 212 is formed at the periphery of the head portion 21 with a plurality of convex teeth, embossed surfaces, positioning bumps or other abutting surfaces 213 having a positioning function.

The inside of the outer sleeve 3 is formed with an accommodating space 30 for positioning the sleeve 1 and the fixing component 2, and a fixing groove 301 for positioning the mating surface 213 of the head 21 is disposed above the accommodating space 30, An annular abutting body 31 that is turned inward is formed at an opening below the accommodating space 30, so that the head 21 of the fixing member 2 can be integrally formed with the outer sleeve 3 by means of plastic, or the head 21 The abutting surface 213 at the periphery and the fixing groove 301 of the outer sleeve 3 are combined and assembled by means of assembly, and the outer sleeve 3 is formed at the outer periphery of the head portion 21 to form a plurality of convex teeth, embossed surfaces, positioning bumps or the like. The pulling portion 32 has a slip preventing effect.

When the present invention is assembled, the elastic member 25 is sleeved on the outside of the sleeve 1, and one end of the elastic member 25 is abutted against the blocking surface 141 of the annular projection 14, and then the shaft 22 of the fixing member 2 is placed. In order to penetrate downwardly into the through hole 11 of the sleeve 1, the other end of the elastic member 25 elastically supports an elastic deformation displacement at the bottom surface 211 of the head portion 21, so that the elastic member 25 is located at the ring convex portion of the sleeve 1. Between the portion 14 and the head portion 21 of the fixing member 2, and the protruding portion 24 of the shaft 22 adjacent to the threaded portion 23 passes through the annular blocking portion 13 which is obliquely extended at the upper periphery of the through hole 11, and then is used A pressing die (not shown) is stamped on the head 21 to push the bottom surface 211 of the head 21 against the annular blocking portion 13 The top surface 131 is deformed and the aperture is reduced, and the top surface 131 of the annular blocking portion 13 forms a coplanar with the flat top surface 111 at the upper periphery of the through hole 11, and the shaft 22 of the fixing member 2 is A gap is formed between the annular blocking portions 13 of the sleeve 1 to avoid the formation of a locking between the fixing member 2 and the sleeve 1 caused by the annular blocking portion 13 being engaged with the shaft 22, by The elastic member 25 is elastically supported against the bottom surface 211 of the head portion 21, and the abutting surface 241 of the engaging projection portion 24 abuts against the stop surface 132 of the annular blocking portion 13 to form a stop position to effectively prevent the fixing member 2 from coming off. In addition to the sleeve 1, the sleeve 1, the fixing element 2 and the outer sleeve 3 are brought into a movable docking state.

Furthermore, the sleeve 1 and the fixing member 2 are integrally formed of a metal material, and the outer sleeve 3 or the abutting surface 213 of the head portion 21 is integrally formed on the head portion 21 of the fixing member 2 by means of plastic. The fixing groove 301 of the outer sleeve 3 is integrated by the assembly positioning manner, and the fixing member 2 is preferably configured to be biased against the annular blocking portion 13 of the sleeve 1 by the protruding portion 24 to form a stop position to effectively prevent The fixing element 2 is out of the sleeve 1 , but the blocking structure between the outer sleeve 3 and the sleeve 1 is designed in many ways, and a C-shaped buckle, washer or other stop element can also be utilized (not shown in the drawing) After being sleeved on the shaft 22 of the fixing member 2, the elastic member 25 is elastically supported to be displaced upwardly at the bottom surface 211 of the head portion 21 of the fixing member 2, and the screwing portion 23 is resisted to the stop. The blocking position is formed on the component, so that the docking sleeve 1, the fixing component 2 and the outer sleeve 3 are in an active docking state, and all the simple modifications and equivalent structural changes which are used in the present specification and the drawings are equally included in the Within the scope of the patent of this creation, it is given to Chen Ming.

Please refer to the sixth, seventh, eighth and ninth drawings, which are respectively a side cross-sectional view of the preferred embodiment of the present invention, a side cross-sectional view after release, and another preferred embodiment. A side cross-sectional view and a side cross-sectional view of a preferred embodiment before being locked in. As can be clearly seen from the figure, the fixture of the present invention can be applied to a telecommunication office cabinet, a computer server, a work machine or the like. The apparatus or device having the set of the machine board, the drawer, the keyboard stand, and the like is only a preferred implementation state, and the first plate body 4 and the second plate body 5 can also be used as the panel and the frame respectively. The server chassis houses a motherboard, a power supply, an access device (such as a hard disk, a CD player, etc.), an interface card, or other electronic device inside the server chassis.

When the sleeve 1 and the first plate body 4 are assembled, the upper sleeve 3 is pressed downward against the outer sleeve 3, and the annular abutting body 31 of the outer sleeve 3 is resisted by the annular protrusion 14 of the sleeve 1. On the surface 141, and after the ring-shaped resisting body 31 passes through the process of elastic deformation and resetting, it will pass over the ring convex portion 14, and the elastic member 25 can elastically support the bottom surface 211 of the head portion 21 of the fixing member 2. And engaging the annular abutting body 31 against the abutting surface 142 of the annular protrusion 14 to form a movable socket, so that the suction head of the suction device (not shown) is adsorbed on the head 21 for subsequent riveting or The overall center of gravity can be kept stable during welding and the like, so as to facilitate more accurate alignment assembly, and it is not easy to be offset or shaken due to the external force vibration caused by the elastic member 25 elastically supporting the head 21 of the fixing member 2. Occurs, and after assembly, it can achieve the effect of positioning accuracy, improving manufacturing quality and yield, and reducing production cost.

During the adsorption process of the suction device, the suction head can be attached to the head 21 of the fixing component 2 for picking up, and the positioning portion 12 of the sleeve 1 is aligned with the periphery of the hole 41 of the first plate body 4, Or penetrating into the hole 41, the head 21 of the fixing member 2 can be released through the suction head, and then punched onto the head 21 by a punching jig (not shown), and the elastic member is punched. After being squeezed, the 25 will be elastically deformed and displaced from the bottom surface 211 of the head 21 to the top of the sleeve 1, so that the annular groove of the positioning portion 12 can be attached. 121 is tightly integrated into the hole 41 of the first plate body 4, and a soldering machine (not shown) may be used to perform subsequent welding work on the solder brushed around the hole 41, or through tin plating. After that, the positioning portion 12 of the sleeve 1 is firmly welded to the hole 41 of the first plate body 4 to be integrated.

In addition, the positioning portion 12 of the sleeve 1 and the hole 41 of the first plate body 4 are preferably integrated into a single body by riveting or welding, but in actual application, the positioning portion 12 of the sleeve 1 can also be used. The inner surface of the hole 41 of the plate body 4 is provided with a screw thread 122 and an external thread 411 which are screwed together, so that the positioning portion 12 of the sleeve 1 can be screwed with an internal thread 122 or an external thread (not shown). The external thread 411 or the internal thread (not shown) of the hole 41 of the first plate body 4 is integrally combined by screwing and fixing, and the simple modification and equivalent of the present specification and the drawings are used. Structural changes shall be included in the scope of the patent of this creation and shall be combined with Chen Ming.

Please also refer to the tenth and eleventh figures, which are respectively a side cross-sectional view of the present preferred embodiment and a side cross-sectional view after the exit, which can be clearly seen from the figure. When it is created, the horizontal portion 42 of the first plate 4 (such as a panel) is firstly closed over the second plate 5 (such as a frame), due to the screwing portion 23 of the fixing member 2. Before the locking, the elastic member 25 is elastically deformed against the bottom surface 211 of the head 21 to be elastically deformed, and the protruding portion 24 is abutted against the annular blocking portion 13 of the sleeve 1 to return the screw portion 23 to The hole 11 of the sleeve 1 does not protrude from the hole 41 of the vertical portion 43 to prevent the screwing portion 23 of the fixing member 2 from colliding with the second plate body 5 when the first plate body 4 is closed. The yaw displacement of the vertical portion 43 prevents the screw portion 23 from being accurately aligned with the lock hole 51, and even the fixing member 2 is subjected to excessive impact shearing to cause cracks or breakage.

When the user presses the head 21 of the fixing member 2 to press the elastic member 25 to be elastically deformed, the threaded portion 23 will pass through the through hole 11 of the sleeve 1 and the screw portion 23 will be After the thread 231 is locked in the lock hole 51, the motor part or the hand tool (such as a screwdriver or a wrench) is used to drive the screwing portion 23 to the screwing portion 23 to be quickly locked and interlocked. The vertical portion 43 of the first plate body 4 is closely abutted against the side of the second plate body 5, so that the first plate body 4 and the second plate body 5 are integrally coupled by locking and fixing, and the fixing member 2 can also be prevented. When the screwing portion 23 is biased and locked, the locking hole 51 of the second plate body 5 is structurally damaged or broken, and the locking is not smoothly performed, and even the operation is inadvertently caused to cause the screwing portion 23 to be broken or broken. The situation occurs, which in turn achieves the effects of structural stability, robust assembly and accurate positioning.

During the locking of the fixing component 2, the annular abutting body 31 of the outer sleeve 3 can be abutted against the annular projection 14 of the sleeve 1, and the screwing portion 23 of the fixing component 2 is locked to the second plate. After the locking hole 51 of the body 5, the annular abutting body 31 can pass over the annular convex portion 14 after the process of elastic deformation and resetting. When the first plate body 4 is affected by the external force, the outer casing can be used. The annular abutting body 31 of the ring 3 is abutted against the annular convex portion 14 of the sleeve 1 and elastically supported by the elastic member 25 to have a suitable elastic preload force at the bottom surface 211 of the head portion 21, so that the screwing portion of the fixing member 2 is screwed. 23 is not easy to rotate and exits the keyhole 51 of the second plate body 5, and has stable blocking positioning and anti-loose effect.

When the present invention is to be released to the first plate 4, it only needs to be pulled again on the triggering portion 32 of the outer sleeve 3, and the outer sleeve 3 is driven to interlock with the head 21 of the fixing member 2 to be simultaneously rotated. The screwing portion 23 of the fixing member 2 can be swung out of the locking hole 51 of the second plate body 5. In the process of withdrawing the fixing member 2, the annular abutting body of the outer sleeve 3 can also be utilized. The movable sleeve is formed on the ring convex portion 14 of the sleeve 1 so that the screw portion 23 does not retract into the through hole 11 of the sleeve 1. With the structural design, when the screw portion 23 of the fixing member 2 is withdrawn When the locking hole 51 of the second plate body 5 is located, the first plate body 4 can be interlocked with the sleeve 1 by the outer sleeve 3, and the second plate body 5 can be withdrawn from the second plate body 5, so that the user can transmit the torque. The rotating manner quickly forms the locked or separated state of the first plate body 4 and the second plate body 5, and has the effect of being easy to operate and the plate-to-plate separation is more labor-saving.

The above detailed description is intended to illustrate a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and other equivalents and modifications may be made without departing from the spirit of the invention. Changes are to be included in the scope of patents covered by this creation.

In summary, the above-mentioned fixed device can achieve its efficacy and purpose. Therefore, this creation is a practical and excellent creation, which is in line with the application requirements of the new patent, and the application is submitted according to law. This case is intended to protect the hard work of the new creators. If there is any doubt in the bureau, please do not hesitate to give instructions. The new creators will try their best to cooperate with them.

1‧‧‧ sleeve

11‧‧‧Perforation

111‧‧‧Top surface

12‧‧‧ Positioning Department

13‧‧‧ annular barrier

131‧‧‧ pushed top

132‧‧‧ stop surface

14‧‧‧ ring convex

141‧‧ ‧ blocking surface

142‧‧‧Resistance

2‧‧‧Fixed components

21‧‧‧ head

211‧‧‧ bottom

212‧‧‧Operation Department

213‧‧‧ docking

22‧‧‧ shaft

23‧‧‧ screw joint

231‧‧‧ external thread

24‧‧‧Protruding

241‧‧‧ by face

25‧‧‧Flexible components

3‧‧‧Outer casing

30‧‧‧ accommodating space

301‧‧‧fixed slot

32‧‧‧Turning Department

Claims (10)

A fixing device includes a sleeve, a fixing component and an outer sleeve, wherein: the hollow interior of the sleeve has a perforation, and a positioning portion positioned at a hole of the preset first plate body is disposed below the perforation, And an annular blocking portion is formed at a periphery of the perforation, and a ring protrusion is disposed at an outer portion of the sleeve adjacent to the positioning portion; the fixing member has a head portion located above the sleeve and is located at a bottom surface of the head portion The lower extending portion is provided with a shaft portion penetrating in the through hole and a screw portion under the shaft body, and the shaft body is formed outwardly adjacent to the screw portion to form a protruding portion that abuts against the annular blocking portion to form a stop position. The outer sleeve is coupled to the head of the fixing component, and an annular abutting body is formed below the accommodating space inside the outer sleeve, when the screwing portion of the fixing component passes through the through hole of the sleeve When the lock is locked in the locking hole of the preset second plate body, the annular abutting body of the outer sleeve can be interlocked against the annular convex portion of the sleeve, and after the elastic deformation and the resetting process, the ring convex portion is passed over, and then The annular abutting body abuts against the annular protrusion to form a movable socket. The fixing device according to claim 1, wherein a peripheral surface of the sleeve is formed with a flat surface facing outwardly at a periphery thereof, and a fixing member is respectively formed at upper and lower sides of the annular blocking portion. The bottom surface of the head is pushed up and forms a coplanar ejector surface with the top holding surface and a stop surface for the bulging portion to abut the stop positioning. The fixing device according to claim 1, wherein the outer surface of the positioning portion of the sleeve is provided with an annular groove. The fixing device according to claim 1, wherein the positioning portion of the sleeve and the hole of the preset first plate body are provided with internal and external threads which are screwed together. The fixing device according to claim 1, wherein the sleeve has a shape on the convex portion of the ring Forming a flat blocking surface, and the rod of the fixing component is sleeved with an elastic component, the outer diameter of the elastic component is smaller than the outer diameter of the sleeve and slightly larger than the outer diameter of the sleeve, and one end of the elastic component is abutted against the convex part of the ring The blocking surface, and the other end of the elastic member elastically supports an elastic deformation displacement at the bottom surface of the head. The fixing device according to claim 5, wherein the blocking surface of the sleeve ring convex portion is formed by downwardly turning and forming an annular abutting body for the outer sleeve to pass over the annular convex portion after elastic deformation and resetting process. Resisting the curved arc-shaped resisting surface on which the active socket is formed. The fixing device according to claim 1, wherein the surface of the head of the fixing member is provided with a cross, a hexagonal groove, a m-shaped groove or a hexagonal protrusion, and is around the head. The abutting surface of the plurality of convex teeth, the embossing surface or the positioning bump is formed, and the fixing groove of the outer casing is provided with a fixing groove for the joint surface of the head to be combined and positioned on the outer casing. A pulling portion is formed at the outer periphery of the portion. The fixing device according to claim 1, wherein the head of the fixing component is integrally formed with an outer sleeve by means of assembly or burying, and is covered by the sleeve inside the outer sleeve and fixed. External to the component. The fixing device according to claim 1, wherein the fixing member has an outer diameter larger than an outer diameter of the shaft, and a convex portion is formed adjacent to the shaft to be abutted against the sleeve. An inclined abutting surface for stopping the positioning is formed on the annular blocking portion. The fixing device according to claim 1, wherein the fixing member has an external thread on the screw portion.