TW201506264A - Fastening device - Google Patents

Abstract

The present invention provides a fastening device, which is configured with a positioning portion positioned at the hole of first plate below a through hole of a sleeve; a collar portion on the exterior of the sleeve adjacent to the upper portion of the positioning portion; a stem and a screwing portion extended downward from the bottom of the head of a fastening element penetrated the through hole of the sleeve. The head of the fastening element is combined with an outer sleeve, and the lower portion of the receiving space inside the outer sleeve is formed with an annular abutting body. When the screwing portion of the fastening element is screwed inside the locking hole of a second plate, the annular abutting body of the outer sleeve may be pressed against the collar portion of the sleeve after elastic deformation and recovering process to form a detachable fitting; and, when the screwing portion of the fastening element is withdrawn from the locking hole, the outer sleeve is incorporated with the sleeve to link the first plate with the second plate for withdraw operation. Thus, the user may rapidly separate the first plate by torque twisting method to achieve a simple operation and labor-saving effect for plate-to-plate separation.

Description

Fixtures

The present invention provides a fixing device, in particular, a through hole is inserted into a through hole of a 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 When the fixing member is withdrawn, the ring can be resisted by the annular sleeve of the outer sleeve.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 inventors 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 the invention patent of such fixed device.

The main purpose of the present invention is to provide a positioning portion disposed at a hole of the first plate body at a position below the through hole of the sleeve, and a ring protrusion 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 head of the fixing member is combined with the outer sleeve and formed under the accommodating space in the outer sleeve a ring-shaped resisting body, when the screwing portion of the fixing component is locked to the locking hole of the second plate body When the inner ringing mechanism of the outer sleeve is interlocked with the annular convex portion of the sleeve through the process of elastic deformation and resetting, a movable sleeve is formed, and when the screwing portion of the fixing component is withdrawn from the locking hole, The first plate body can be interlocked by the outer sleeve with the sleeve, and the second plate body can be withdrawn from the second plate body, so that the user can quickly separate the first plate body by the torque rotation, and has the operation simple and the plate pair Plate separation is more labor-saving.

The secondary object of the present invention is that the upper end of the ring convex portion of the sleeve is located at a distance from the top of the ring, and the annular blocking portion having the outer diameter larger than the annular convex portion is provided, so that the shaft of the fixing element is sleeved with the elastic member. The elastic element is placed in the perforation of the sleeve, so that the elastic element is elastically deformed and displaced between the sleeve and the fixing element, and then the outer sleeve is sleeved outside the sleeve, and the annular abutting body is resisted by the ring. The blocking position is formed on the blocking portion, so that the sleeve, the fixing member and the outer sleeve are in a movable docking state to effectively prevent the fixing member from coming out of the sleeve.

Another object of the present invention is to press the sleeve against the outer sleeve first when the sleeve is assembled with the first plate body, 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 to prevent the first plate body (such as the panel) from being closed over the second plate body (such as the frame), because the annular abutting body of the outer sleeve before the fixing member is locked On the annular blocking portion of the sleeve, the screw portion can be retracted into the perforation of the sleeve without Protruding from the first plate body to avoid the first plate body yaw displacement caused by the screwing portion of the fixing member colliding with the second plate body when the first plate body is closed, so that the screw portion cannot be accurately aligned At the keyhole of the second plate body, even the fixing element is subjected to cracking or breaking due to excessive impact shearing force, or the screwing portion is broken or broken due to inadvertent operation.

Another object of the present invention is that when the first plate body is affected by an external force, the annular abutting body of the outer sleeve can be abutted against the annular convex portion of the sleeve, and elastically supported by the elastic member against 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‧‧‧ accommodating slots

12‧‧‧ Positioning Department

121‧‧‧Round groove

122‧‧‧ internal thread

13‧‧‧ ring convex

131‧‧‧Bevel

132‧‧‧Resistance

14‧‧‧Ring Block

141‧‧‧ pushed top

142‧‧‧ stop surface

2‧‧‧Fixed components

21‧‧‧ head

211‧‧‧ bottom

212‧‧‧Operation Department

213‧‧‧ docking

22‧‧‧ shaft

23‧‧‧ screw joint

231‧‧‧ external thread

24‧‧‧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 figure is a three-dimensional appearance of the present invention.

The second figure is a perspective exploded view of the present invention.

The third figure is a perspective exploded view of another perspective of the present invention.

The fourth drawing is a side cross-sectional view of the present invention.

Figure 5 is a side cross-sectional view of the preferred embodiment of the present invention prior to riveting.

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 showing another preferred embodiment of the present invention.

Figure 9 is a side cross-sectional view showing a preferred embodiment of the present invention before being locked.

Figure 10 is a side cross-sectional view showing a further preferred embodiment of the present invention after being locked.

Figure 11 is a side cross-sectional view showing a further preferred embodiment of the present invention 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 objects and effects, the technical means and constructions of the present invention will be described in detail with reference to the preferred embodiments of the present invention.

Please refer to the first, second, third and fourth figures, which are respectively a perspective view, an exploded view, an exploded view of another perspective and a side cross-sectional view of the present invention, which can be clearly seen from the figure. The invention comprises a sleeve 1, a fixing element 2 and an outer sleeve 3, so that the main components and features of the present invention are as follows, wherein the hollow interior of the sleeve 1 has a longitudinal perforation 11 and a hole 11 is provided above it. There is a recessed receiving groove 111, and a positioning portion 12 is disposed below the through hole 11. The outer surface of the positioning portion 12 is provided with an annular groove 121, and the outer portion of the sleeve 1 is adjacent to the upper portion of the positioning portion 12. A ring-shaped convex portion 13 is formed, and a guiding inclined surface 131 and a resisting surface 132 are respectively formed on the upper and lower surfaces of the annular convex portion 13 , and an annular blocking portion is disposed at a distance from the top of the annular convex portion 13 near the top of the receiving groove 111 . 14. The outer diameter of the annular blocking portion 14 is larger than the outer diameter of the annular convex portion 13, and the upper and lower surfaces of the annular blocking portion 14 are respectively formed with a downwardly extending top surface 141 and a stop surface 142.

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 screwing portion 23 has an external thread 231 on the screwing portion 23, and an elastic member 24 is sleeved on the shaft 22, and the elastic member 24 is disposed between the sleeve 1 and the fixing member 2 to be elastically deformed and displaced. And the surface of the head 21 of the fixing member 2 is provided There may be a cross, a hexagonal groove, a m-shaped groove, a hexagonal protrusion or other various types of actuation portions 212, and a plurality of convex teeth, embossed surfaces, and positioning bumps are formed at the periphery of the head portion 21. Or other docking surface 213 with positioning function.

The outer sleeve 3 has an accommodating space 30 covering the outer portion of the sleeve 1 and the fixing member 2, and a fixing groove 301 for positioning and abutting the abutting 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 shaft 22 of the fixing member 2 has been sleeved with the elastic member 24, and the shaft 22 of the sleeve member 12 is inserted downward into the through hole 11 of the sleeve 1, and one end of the elastic member 24 is resisted. The groove 111 is disposed in the groove 111 and elastically supported by the other end of the elastic member 24 against the bottom surface 211 of the head portion 21, so that the elastic member 24 is elastic between the positioning portion 12 of the sleeve 1 and the head portion 21 of the fixing member 2. Deformation displacement, and then applying force to sleeve the outer sleeve 3 to the outside of the sleeve 1, and the annular abutting body 31 at the opening below the outer sleeve 3 is abutted against the pushing surface 141 of the annular blocking portion 14 of the sleeve 1. And after the ring-shaped resisting body 31 passes through the process of elastic deformation and resetting, it will pass over the lower portion of the annular blocking portion 14, so that the sleeve 1 can be received in the accommodating space 30 of the outer sleeve 3, and the elastic member is made at the same time. 24 elastically abuts against the bottom surface 211 of the head portion 21, and interlocks the annular abutting body 31 of the outer sleeve 3 against the stop surface 142 of the annular blocking portion 14 to form a stop position to effectively prevent the fixing member 2 from coming off Outside the sleeve 1, and further The sleeve 1, the fixing member 2 and the outer sleeve 3 are brought into an active 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 and positioning manner, and the outer sleeve 3 is preferably configured to be abutted against the annular blocking portion 14 of the sleeve 1 by the annular abutting body 31 to form a stop position, thereby effectively preventing 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 24 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 by 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 the simple modification and the equivalent structural change which are carried out by using the specification and the drawings of the present invention are equally included in the Within the scope of the patent of the present invention, it is combined with Chen Ming.

Please refer to the fifth, sixth, seventh and eighth figures, which are respectively a side cross-sectional view before riveting, a side cross-sectional view after riveting, a side cross-sectional view after release, and another A side cross-sectional view of a preferred embodiment, as can be clearly seen from the figure, the fixing device of the present invention can be applied to a telecom office cabinet, a computer server, a work machine or other machine board group, a drawer, a keyboard rack, etc. The apparatus or device constructed in the group is only a preferred implementation state, and the first board body 4 and the second board body 5 (shown in FIG. 9) can also be used as a panel and a frame respectively, thereby forming a server. The chassis and the inside of the server chassis are housed with a motherboard, a power supply, an access device (such as a hard disk, a CD player, etc.), an interface card, or other electronic device.

When the sleeve 1 and the first plate body 4 are assembled, the force is first pressed downwards. The sleeve 3 is placed on the guide inclined surface 131 of the annular projection 13 of the sleeve 1 and the annular abutment body 31 is passed over after the process of elastic deformation and resetting. The elastic member 24 is elastically supported by the bottom surface 211 of the head portion 21 of the fixing member 2, and the annular abutting body 31 is abutted against the abutting surface 132 of the ring convex portion 13. The movable sleeve is such that the suction head of the suction device (not shown) is adsorbed on the head 21 for subsequent riveting or welding, and the overall center of gravity can be kept stable, so that the alignment assembly is more precise and less flexible. The element 24 is elastically supported on the head portion 21 of the fixing member 2 by the influence of external force vibration to cause offset or sway, and after assembly, the positioning can be achieved, the quality and yield of the manufacturing are improved, and the production cost is reduced. The effect.

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 24 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 121 of the positioning portion 12 can be pressed against the first plate 4 The holes 41 are integrated into one body, and a soldering machine (not shown) may be used to perform subsequent welding operations on the solder brushed around the holes 41, or the positioning portion 12 of the sleeve 1 may be made after tin plating. The stable welding is integrated into 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. a snail that is screwed to each other at the joint surface of the hole 41 of a plate body 4 The groove 122 and the external thread 411 can be screwed to the external thread 411 or the internal thread of the hole 41 of the first plate body 4 by the internal thread 122 or the external thread (not shown). The combination of the screwing and fixing means is integrated, and the simple modification and the equivalent structural change which are the contents of the specification and the drawings of the present invention are all included in the scope of the patent of the present invention. Chen Ming.

Please also refer to the ninth, tenth, and eleventh drawings, which are respectively a side cross-sectional view before locking, a side cross-sectional view after locking, and a side cross-sectional view after exiting according to still another preferred embodiment of the present invention. As can be clearly seen from the figure, when the present invention is used, 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). Wherein, since the screwing portion 23 of the fixing member 2 is locked, the annular abutting body 31 of the front outer sleeve 3 is abutted against the annular blocking portion 14 of the sleeve 1, the screwing portion 23 can be retracted to the perforation of the sleeve 1. 11 does not protrude from the hole 41 of the vertical portion 43 to avoid the yaw of the vertical portion 43 caused by the screwing portion 23 of the fixing member 2 colliding with the second plate body 5 when the first plate body 4 is closed. The displacement causes the screwing portion 23 to be inaccurately aligned with the keyhole 51, even if 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 24 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 second plate body 5 is caused The lock hole 51 is structurally damaged or broken, and the lock cannot be smoothly performed. Even if the operation is inadvertent, the screw portion 23 is broken or broken, thereby achieving the structure stability, the assembly is firm, and the positioning is effective.

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 13 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 13 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 ring-shaped resisting body 31 of the ring 3 is abutted against the ring-shaped convex portion 13 of the sleeve 1 and elastically supported by the elastic member 24 to have a suitable elastic pre-stress 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 body 4, it only needs to be pulled again on the pulling portion 32 of the outer sleeve 3, and the outer sleeve 3 is driven to interlock with the head portion 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. During the withdrawal of the fixing member 2, the annular abutting body 31 of the outer sleeve 3 can also be used to resist the sleeve. The movable sleeve is formed on the ring convex portion 13 of the cylinder 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 screwing portion 23 of the fixing member 2 is withdrawn from the second plate body When the locking hole 51 of the 5 is used, the first plate 4 can be interlocked with the sleeve 1 by the outer sleeve 3, and the second plate 5 can be withdrawn from the second plate 5, so that the user can quickly rotate through the torque. The first plate body 4 and the second plate body 5 form a locked or separated state, and have the effect of being easy to operate and the plate-to-plate separation is more labor-saving.

The above detailed description is illustrative of a preferred embodiment of the invention. The present invention is not intended to limit the scope of the invention, and all other variations and modifications may be included in the scope of the invention covered by the invention. .

In summary, the above-mentioned fixing device of the present invention can achieve its efficacy and purpose when it is used. Therefore, the invention is an invention with excellent practicability, and is in fact conforming to the application requirements of the invention patent, and submits an application according to law. The Commission will grant this case as soon as possible to protect the inventor's hard work. If there is any doubt in the bureau, please do not hesitate to give instructions to the inventor, and the inventor will try his best to cooperate with him.

1‧‧‧ sleeve

11‧‧‧Perforation

111‧‧‧ accommodating slots

12‧‧‧ Positioning Department

13‧‧‧ ring convex

131‧‧‧Bevel

132‧‧‧Resistance

14‧‧‧Ring Block

141‧‧‧ pushed top

142‧‧‧ stop surface

2‧‧‧Fixed components

21‧‧‧ head

211‧‧‧ bottom

212‧‧‧Operation Department

213‧‧‧ docking

22‧‧‧ shaft

23‧‧‧ screw joint

231‧‧‧ external thread

24‧‧‧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 a ring protrusion is disposed on the outer portion of the sleeve adjacent to the positioning portion; the fixing member has a head portion located above the sleeve, and extends downwardly at the bottom surface of the head portion to be inserted into the through hole a screwing portion under the shaft; 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 fixing component is screwed When the portion is inserted through the through hole of the sleeve and locked in the locking hole of the preset second plate body, the annular abutting body of the outer sleeve can be interlocked to resist the ring convex portion of the sleeve via the elastic deformation and reset process. After passing over the ring convex portion, the annular abutting body abuts against the ring convex portion to form a movable socket. The fixing device of claim 1, wherein the sleeve has a receiving groove at a position above the perforation, and the rod of the fixing member is sleeved with an elastic member, and the elastic member is supported at one end by the elastic member. The groove is disposed in the groove, and the elastic end of the elastic member is elastically deformed against the bottom surface of the head to exhibit an elastic deformation displacement. 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 upper and lower surfaces of the ring protrusion of the sleeve are respectively formed with a beveling surface on which an annular abutting body for the outer sleeve is abutted. And a resisting surface for forming the movable sleeve by the annular abutting body after the elastic deformation and the resetting process. The fixing device according to claim 1, wherein the annular convex portion of the sleeve is disposed at a distance from the top of the ring to be provided with an annular blocking portion, and a jacket is formed on the upper and lower surfaces of the annular blocking portion, respectively. The urging surface of the annular abutting body of the tube abuts thereon and the stop surface for forming the slidable position by the annular abutting body after the elastic deformation and the resetting process. The fixing device according to claim 6, wherein the outer diameter of the annular blocking portion of the sleeve is larger than the outer diameter of the annular convex portion. 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 external thread on the screw portion.