TWI576519B - Fixtures - Google Patents

Description

Fixtures

The invention provides a fixing device, in particular, the fixing component utilizes the guiding inclined surface of the stopping portion for the two plates to be displaced on both sides of the slot, so that the rod body passes through the slot to enter the fixing groove, and the elastic element is reset and then the outer sleeve is rotated. The positioning of the blocking portion is located in the locking groove, and the outer sleeve is further rotated and the outer sleeve or the head is pushed to disassemble the second plate, thereby achieving the effect of convenient positioning and disassembly.

According to the continuous advancement of electronic technology, many products use screws or spigots for positioning, such as drawers, keyboard stands, machine sets, etc., which have movable telescopic structures, and use screws or spigots to make slides, The chute forms a position when it is moved to a specific position, so that the user can perform wiring work, equipment movement or transportation while the slide rail and the chute are not moving, such as a telecommunication office cabinet, a computer server, a work machine, etc. The device is assembled by a plurality of devices and mechanisms. At present, the positioning method of the slide rails and the sliding grooves during the movement is to use the screws or the spigots to cause the plates and the plates to be slipped in the stacked state to form a positioning for the work. Personnel work.

In addition, the internal computer or industrial computer server chassis usually has electronic devices such as a motherboard, a power supply, a hard disk, and a fan. However, the specifications of the motherboards are different for each motherboard manufacturer. Therefore, a plurality of copper pillars need to be disposed on the bottom plate of the chassis, and the motherboard is placed on the plurality of copper pillars, and then the screws are respectively passed through the through holes of the motherboard, and then locked in the copper pillars to be fixed and fixed. One, but with the manufacturer's case As the volume grows, the number of copper columns on the bottom plate will also increase by a multiple. This type of screw locking into the copper column will lock the fixing plate between the main board and the bottom plate, which is not only limited by the limited space inside the casing. Allowing users to spend more time and manpower on the work, is also not conducive to rapid assembly, resulting in the overall assembly process becoming more cumbersome and time-consuming and inconvenient in operation, which is yet to be redesigned by the industry. Effectively solve it.

Therefore, how to solve the above-mentioned lack of inconvenience and inconvenience is the direction that the relevant industry players in this industry are eager to study and improve.

Therefore, in view of the above-mentioned shortcomings, the inventors have collected relevant materials, and through multi-party evaluation and consideration, and through years of experience in the industry, through continuous trial and modification, the invention patents of such fixtures were designed.

The main purpose of the present invention is that the abutting surface on the two sides of the second plate dissection groove contacts the guiding inclined surface of the fixing member stopping portion and is pushed against, so that the rod body of the fixing member protrudes outside the perforation of the sleeve. The bottom surface of the head is elastically deformed against the elastic member. After the rod body continues to pass through the slot and enters the retaining groove, the elastic member is elastically reset and drives the outer sleeve, the head and the fixing member. When the reset is performed, the guiding inclined surface of the stopping portion will abut against the tapered inclined surface of the locking groove, and is blocked by the fixing groove, so that the outer sleeve can be rotated to stop the arc surface of the rod body in the locking groove phase. Adjacent to the side wall of the slot is formed to be exactly positioned, and when the second plate needs to be detached from the first plate, only the outer sleeve needs to be rotated and the outer sleeve or the surface of the head is pressed, so that the rod protrudes to the perforation of the sleeve Externally, and let the guide bevel off the tapered slope of the retaining groove, at this time, the second plate can be detached by force. Because the structure of the fixing component is simple, it is only necessary to insert the second plate into the position and then rotate the outer casing. Forming a true position, and the second plate can be detached by swiping and pushing with a finger. In case you can do with positioning effect At the same time, the purpose of disassembly and assembly is convenient.

The second object of the present invention is that the pitch of the narrow portion of the slot is equal to or greater than the distance between the opposite longitudinal planes of the rod body and less than the distance between the two opposite arc surfaces, so that the user can rotate the outer sleeve. The arc surface is stopped at the fixing groove adjacent to the side wall of the slot, so as to prevent the user from accidentally pressing the outer sleeve or the surface of the head, and the stopper of the fixing member is separated from the fixing groove, the second The sheet can be withdrawn from the outside in the opposite direction of the push to achieve the purpose of positioning the second sheet on the stationary component.

1‧‧‧Fixed components

11‧‧‧Sleeve

111‧‧‧Perforation

1111‧‧‧ accommodating slots

112‧‧‧ Groove

113‧‧‧ Positioning Department

1131‧‧‧Round groove

12‧‧‧Outer casing

120‧‧‧ accommodating space

121‧‧‧ rib

122‧‧‧ socket

123‧‧‧Inlay groove

124‧‧‧Turning Department

1241‧‧‧ wrench

1242‧‧‧ Pull ring

13‧‧‧ head

130‧‧‧Insert hole

131‧‧‧ base

132‧‧‧cartridge ring

1321‧‧‧Interface

133‧‧‧ convex

14‧‧‧Flexible components

15‧‧‧Fixed parts

151‧‧‧Riveting

152‧‧‧ rod body

1521‧‧‧ longitudinal section

1522‧‧‧Arc face

153‧‧‧stops

1531‧‧‧Bevel

1532‧‧‧faced

2‧‧‧ first plate

21‧‧‧ holes

3‧‧‧Second plate

31‧‧‧ slotting

311‧‧‧narrow

32‧‧‧卡固槽

321‧‧‧Expanding bevel

33‧‧‧Resistance

The first figure is a perspective view of a fixing assembly of a preferred embodiment of the present invention.

The second drawing is an exploded perspective view of a fixing assembly of a preferred embodiment of the present invention.

The third drawing is another perspective exploded view of the fixing assembly of the preferred embodiment of the present invention.

The fourth figure is a perspective view of the preferred embodiment of the present invention before assembly.

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

Figure 6 is a side cross-sectional view showing the assembled second panel of the preferred embodiment of the present invention.

Figure 7 is a side cross-sectional view showing the second plate rotationally locked in accordance with a preferred embodiment of the present invention.

Figure 8 is a side cross-sectional view showing the second plate rotated and detached in accordance with a preferred embodiment of the present invention.

Figure 9 is a perspective view of a fixing assembly of another embodiment of the present invention.

Figure 10 is a perspective view of a fixing assembly of still another embodiment of the present invention.

In order to achieve the above objects and effects, the technical means, its construction, the method of implementation, and the like, which are employed in the present invention, are described in detail in the preferred embodiments of the present invention. As follows, Philip fully understands.

Please refer to the first, second, third and fourth figures, which are perspective views of the fixing component, an exploded perspective view of the fixing component, another exploded view of the fixing component and a three-dimensional appearance before assembly. The fixing device of the present invention comprises a fixing assembly 1, a first plate 2 and a second plate 3, wherein the fixing assembly 1 comprises a sleeve 11, an outer sleeve 12, a head 13, The elastic member 14 and the fixing member 15 , wherein the sleeve 11 is internally provided with a through hole 111 , and a receiving groove 1111 for enlarging the opening is provided at the top of the through hole 111 , and the outer surface of the sleeve 11 is annularly equidistantly recessed with a plurality of concave grooves The sleeve 112 is provided with a positioning portion 113 at the bottom of the sleeve 11, and an annular groove 1131 is disposed on the outer surface of the positioning portion 113, and an outer sleeve 12 is disposed above the sleeve 11, and the outer sleeve 12 has a sleeve inside. The accommodating space 120 is disposed in the accommodating space 120, and at least one longitudinal rib 121 is disposed on the inner wall surface of the accommodating space 120 for sliding on the plurality of recesses 112, and the sleeve is formed with a reduced aperture above the accommodating space 120. a hole 122, and the inner wall surface of the accommodating space 120 is recessed adjacent to the socket hole 122 The annular inserting groove 123 is formed with a sliding portion 124 on the surface of the outer sleeve 12, and the head portion 13 is disposed in the accommodating space 120 of the outer sleeve 12, and the head portion 13 has a fitting hole 122. The base portion 131 has a through hole 130 formed in the center of the base portion 131, and a latching ring 132 embedded in the inserting groove 123 is formed outwardly at the periphery of the base portion 131, and the outer surface of the protruding ring 132 is latched. A toothed engaging surface 1321 is provided, and a convex portion 133 is provided at the bottom of the base portion 131 at the periphery of the insertion hole 130, and the convex portion 133 of the head portion 13 and the receiving groove 1111 of the sleeve 11 are abutted. The elastic member 14 is further provided with a fixing member 15 penetrating through the through hole 111 and fixed to the head portion 13 under the sleeve 11, and the fixing member 15 has a pressure The rivet portion 151 is inserted in the insertion hole 130 and extends under the rivet portion 151 with a rod 152 extending through the through hole 111 of the sleeve 11. The outer surface of the rod body 152 is opposite to the two sides. The longitudinal surface 1521 has a curved surface 1522 formed on the outer surface of the fixing member 15 opposite to the longitudinal cutting surface 1521, and the bottom of the rod body 152 is convexly provided with a stopper portion 153, and a slope is formed on the top of the stopper portion 153. The guiding inclined surface 1531 is further provided with at least one cutting surface 1532 at a position parallel to or perpendicular to the longitudinal surface 1521 of the outer surface of the stopping portion 153.

The first plate member 2 is provided with a hole 21 for fixing the positioning portion 113 of the sleeve 11.

The second plate member 3 is assembled parallel to the first plate member 2, and is disposed on the side of the second plate member 3 from the outside toward the inside, and is provided with a slit 31 which is tapered to allow the rod body 152 of the fixing member 15 to pass through. The end of the slot 31 is tapered to form a narrow portion 311, and the narrow portion 311 extends a locking slot 32 equal to or larger than the outer diameter of the rod 152, and the securing slot 32 is disposed away from the side wall of the first plate 2 The outwardly flared shape and the same inclination as the guide slope 1531 for the stop portion 153 to retreat to the tapered slope 321 , and the second plate 3 at the end of the two side surfaces of the slot 31 are outwardly tapered for the thrust stop The guide bevel 1531 of the portion 153 allows the rod 152 to extend beyond the abutment surface 33 of the outer side of the perforation 111 of the sleeve 11.

The head portion 13 of the fixing component 1 is preferably formed by integrally forming the outer sleeve 12 by means of plastic coating, but in actual application, the latching ring 132 and the outer sleeve 12 of the head 13 can also be utilized. The assembly method is integrated into the card, and all the simple modifications and equivalent structural changes made by using the specification and the contents of the present invention are included in the patent scope of the present invention and are combined with Chen Ming.

Furthermore, the angle between the guiding slope 1531 of the stopping portion 153 and the bottom surface of the blocking portion 153 is preferably between 60° and 120°, so that the second plate 3 is easily pushed into position; and the second plate 3 is The pitch of the narrow portion 311 of the slot 31 is equal to or greater than the distance between the opposite longitudinal planes 1521 of the shaft 152 and less than the distance between the two opposing curved surfaces 1522.

When the fixing component 1 of the present invention is to be assembled on the first plate 2, the bottom surface of the positioning portion 113 of the sleeve 11 of the fixing component 1 is first abutted against the periphery of the hole 21 of the first plate 2, and then the punching jig is used. Pressing on the head 13 of the fixing component 1 to force the elastic component 14 to be elastically deformed, and pressing the bottom surface of the head 13 against the top of the sleeve 11 to connect the positioning portion of the sleeve 11 113 is riveted into the hole 21 to be combined and positioned, and the annular groove 1131 of the positioning portion 113 is used to firmly fix the sleeve 11 to the hole 21 to be integrated and integrated, thereby completing the assembly of the fixing component 1 The operation of the sheet 2.

The positioning portion 113 of the sleeve 11 is preferably joined to the first plate 2 by means of riveting, but in actual application, it can also be through a surface adhesive technology (SMT), welding, card bonding or other sleeves. The combination of the barrel 11 fixed on the first plate 2, the form in which the foregoing effects can be achieved is covered by the present invention, and such simple modifications and equivalent structural changes are equally included in the patent scope of the present invention. Within, combined with Chen Ming.

Please refer to the fifth, sixth, seventh and eighth figures, which are side cross-sectional views of the second plate before assembly according to a preferred embodiment of the present invention, a side cross-sectional view of the second plate after assembly, and a second plate rotation lock. A side cross-sectional view of the side view and a side view of the second plate rotated and detached. As can be clearly seen from the figure, the present invention first uses the second plate 3 in a direction parallel to the first plate 2, And the inner side wall of the slot 31 of the second plate 3 faces the two longitudinal sections 1521 of the rod body 152, and then inserts, and the abutting surface 33 of the second plate 3 contacts the block during the insertion process. The guiding inclined surface 1531 of the stopping portion 153 is pushed against, and since the abutting surface 33 is tapered outward, the end of the resisting surface 33 can be inserted into the gap between the guiding inclined surface 1531 and the sleeve 11, and when resisting When the surface 33 contacts the guiding surface 1531, and the second plate 3 continues to move, the abutting surface 33 pushes the fixing member 15 away from the sleeve 11 so that the rod 152 of the fixing member 15 goes to the sleeve 11. The through hole 111 protrudes in the outer direction, and simultaneously drives the outer sleeve 12 and the head 13 to be displaced, so that the bottom surface of the head 13 is elastically deformed against the elastic member 14 until the guiding slope 1531 of the stopping portion 153 abuts the second The plate 3 has two side walls of the slot 31, and at the same time, the rod 152 enters into the slot 31, and when the second plate 3 is continuously displaced, the rod 152 can pass through the narrow portion 311 to enter the card. In the fixing groove 32, since the locking groove 32 is away from the side surface of the first plate 2, the tapered surface 321 is outwardly flared, so that the blocking portion 153 is When the guiding inclined surface 1531 is moved to the locking groove 32, the elastic element 14 is elastically reset, and the outer sleeve 12 and the head 13 are pushed to be reset, and the fixing member 15 is also brought toward the sleeve. The displacement of the displacement member of the retaining member 15 is positioned in the retaining groove 32, and is stabilized by the guide inclined surface 1531 of the retaining portion 153 against the tapered slope 321 of the retaining groove 32. .

After the inclined surface 1531 of the blocking portion 153 abuts against the diverging slope 321 of the locking groove 32, the pulling portion 124 of the outer sleeve 12 is swung and the rib 121 is passed over the groove. At 112, the sliding position is rotated to the other groove 112 to form a stop position, and the fixing member 15 is rotated to make the longitudinal section 1521 of the rod body 152 misaligned in the slot 31 of the second plate 3. Inner side wall surface, thereby making the rod body 152 The curved surface 1522 is abutted against the fixing groove 32 adjacent to the side wall of the narrow portion 311 of the slit 31. Since the second plate 3 is assembled to the first plate 2, the curved surface 1522 of the rod 152 is abutted against the clamping plate. The groove 32 is adjacent to the side wall of the narrow portion 311 of the slot 31, and the guiding slope 1531 of the blocking portion 153 is abutting against the tapered slope 321 of the locking groove 32, so that the second plate 3 is applied by an external force toward the entering direction. When the displacement is applied, the urging force cannot push the fixing member 15 to move, so that the rod body 152 is extended, so that the second plate member 3 cannot be detached from the first plate member 2, and the effect of the positioning can be achieved.

When the second plate 3 needs to be detached from the first plate 2, the pulling portion 124 of the outer sleeve 12 is again pulled to rotate in a forward or reverse direction, and the rib 121 is driven over the other groove 112. At the same time, the sliding displacement of 90 degrees is reversed or reversed to the other or the original groove 112 to form a stop position, and the opposite longitudinal section 1521 of the fixing member 15 is aligned with the slot of the second plate 3. 31 inner side wall surface, and then press the outer sleeve 12 or the surface of the head portion 13 to interlock the movable member 15 to move downward, and the rod body 152 of the fixing member 15 protrudes to the outside of the through hole 111 of the sleeve 11, and the fixing member The stopper portion 153 of the 15 is disengaged from the restriction in the retaining groove 32, and at the same time, the bottom surface of the head portion 13 is pressed against the elastic member 14 to be elastically deformed, and at this time, the second plate member 3 can be biased toward the push-in direction. When the direction is withdrawn, the rod body 152 can pass through the slot 31 to the outside of the second plate 3. After the finger stops applying force, the elastic member 14 is elastically reset, and the outer sleeve 12, the head 13 and the fixing member 15 are driven. With the reset, the rod 152 is again entered into the perforation 111 of the sleeve 11, and the next second plate 3 can be used for the next time. Loading action.

After the fixing assembly 1 is not used or assembled in the second plate 3, the rod 152 of the fixing member 15 is partially exposed outside the through hole 111 of the sleeve 11, which is visible. The height of the elastic member 14 or the thickness of the fixing groove 32 of the second plate member 3 is changed only when the second plate member 3 is assembled to push the rod body 152 to be displaced in the through hole 111 and to be unstressed. The function of the displacement in the 111 to generate the reset may be, and thus is not limited to, the scope of the patent of the present invention, such as the use of other modifications and equivalent structural changes, are equally included in the scope of the patent of the present invention, and are combined with Chen Ming.

Referring to the first, ninth, and tenth drawings, the three-dimensional external view of the fixing component of the preferred embodiment of the present invention, the three-dimensional external view of the fixing component of another embodiment, and the three-dimensional external view of the fixing component of still another embodiment are shown. As can be clearly seen from the figure, the triggering portion 124 of the outer sleeve 12 of the present invention can be provided with a wrench block 1241 protruding outward from the opposite sides of the surface (as shown in the first figure) or protruding outwardly on the surface side. The wrench block 1241 (such as the ninth figure) is also provided with a pull ring 1242 protruding outward from the surface (such as the tenth figure), which only needs to allow the user to rotate the structure of the outer sleeve 12, so The form in which the foregoing effects can be achieved is encompassed by the present invention, and such simple modifications and equivalent structural changes are included in the scope of the patent of the present invention and are incorporated herein by reference.

The invention has the advantages of simple structure of the fixing component 1 and guiding effect during disassembly and assembly, and no need to use the hand tool or the hand rotating screw, only the second plate 3 needs to be aligned, and then the outer casing 12 is rotated. The second plate 3 is detached by the finger, and the second plate 3 is detached by pushing the outer sleeve 12 or the surface of the head 13 by the finger. It can achieve the convenience of disassembly and assembly at the same time with the actual positioning effect.

Furthermore, the pitch of the narrow portion 311 of the slot 31 of the present invention is equal to or greater than the distance between the opposite longitudinal planes 1521 of the shaft 152 and less than the distance between the two opposing curved surfaces 1522, so that the user can rotate the outer sleeve 12 To stop the arc surface 1522 The card slot 32 is adjacent to the side wall of the slot 31 to prevent the user from accidentally pressing the outer sleeve 12 or the surface of the head 13 and preventing the stop portion 153 of the fixing member 15 from being restricted from the securing slot 32. The effect of the second sheet 3 being able to exit the outside from the push-in direction is to achieve the effect of positioning the second sheet 3 on the fixed assembly 1.

Therefore, the above description is only a preferred embodiment of the present invention, and is not limited to the patent scope of the present invention. The fixing device of the present invention is a guiding inclined surface 1531 of the bottom stopper portion 153 of the fixing member 15 of the fixing assembly 1. The two-side abutting surface 33 of the second plate 3 is displaced, so that the rod 152 of the fixing member 15 passes through the slot 31 into the locking groove 32. After the elastic member 14 is elastically reset, the outer sleeve 12 is rotated. The second plate 3 is detached from the fixing component 1 by positioning the blocking portion 153 in the fixing groove 32 to form a true positioning, and the user can rotate the outer sleeve 12 and push the outer sleeve 12 or the head 13 again. Therefore, the utility model has the advantages of convenient positioning and disassembly and assembly, and therefore, the implementation manners, operation steps and the like which can achieve the foregoing effects are all covered by the present invention, and such simple modification and equivalent implementation content changes should be included in the same reason. Within the scope of the patent of the present invention, it is combined with Chen Ming.

In summary, the above-mentioned fixing device of the present invention can achieve its efficacy and purpose in practical application and implementation. Therefore, the present invention is an excellent research and development, and is an application for conforming to the invention patent, and submits an application according to law. I hope that the trial committee will grant this case as soon as possible to protect the inventor's hard work in research and development, and if there is any doubt in the audit committee, please do not hesitate to give instructions to the inventor, and the inventor will try his best to cooperate with him.

1‧‧‧Fixed components

11‧‧‧Sleeve

111‧‧‧Perforation

1111‧‧‧ accommodating slots

112‧‧‧ Groove

12‧‧‧Outer casing

120‧‧‧ accommodating space

121‧‧‧ rib

122‧‧‧ socket

124‧‧‧Turning Department

1241‧‧‧ wrench

13‧‧‧ head

130‧‧‧Insert hole

131‧‧‧ base

132‧‧‧cartridge ring

1321‧‧‧Interface

14‧‧‧Flexible components

15‧‧‧Fixed parts

151‧‧‧Riveting

152‧‧‧ rod body

1521‧‧‧ longitudinal section

1522‧‧‧Arc face

153‧‧‧stops

1531‧‧‧Bevel

1532‧‧‧faced

Claims (10)

The fixing device comprises a fixing component, a first plate and a second plate, wherein: the fixing component comprises a sleeve, an outer sleeve, a head, an elastic component and a fixing component, wherein the sleeve is internally provided with a perforation, and The outer surface of the sleeve is annularly equidistantly recessed with a plurality of recesses, and the bottom of the sleeve is provided with a positioning portion, and then an outer sleeve is arranged above the sleeve, and the outer sleeve has an accommodation space for the sleeve to be placed therein. And at least one longitudinal rib on the inner wall of the accommodating space for sliding on the plurality of grooves, wherein the outer casing has a head in the accommodating space, and the center of the head is provided with an insertion hole, and An elastic member is disposed between the head and the sleeve, and a fixing member penetrating into the through hole and fixed to the head is disposed under the sleeve, and the fixing member has a riveting portion embedded in the insertion hole. A rod body extending through the perforation extends below the rivet portion, and a longitudinal section is formed on the outer surface of the rod opposite to the two sides, and a curved surface is formed on the other side of the fixing member opposite to the longitudinal section, and the bottom of the rod body a stopper is protruded outward, and a top portion of the stopper is formed a beveled guide bevel; the first plate is provided with a hole for fixing the positioning portion of the sleeve; the second plate is parallel to the first plate, and is formed on the side of the second plate from the outside to the inside. Shrinking for the rod body of the fixing member to pass through the slot, and the end of the slot has a narrow portion that is blocked by the outer sleeve to stop on the arc surface, and then extends on the narrow side for the rod body to be inserted a fixing groove, wherein the fixing groove is away from the first plate and a side wall surface is provided with a downwardly expanding shape for the stopper to retreat, and the second plate is located at the end of the two side surfaces of the groove. Retracting the guide bevel of the push-stop portion allows the rod body to extend beyond the abutment surface of the outer side of the sleeve. The fixing device according to claim 1, wherein the perforated top of the sleeve is a receiving groove provided with an enlarged aperture and a resilient member is abutted. 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 of claim 1, wherein the outer casing has a sleeve hole formed with a reduced aperture above the receiving space, and a ring is formed in the inner wall of the receiving space adjacent to the sleeve hole. a fixing groove is formed on the outer sleeve surface, and a base portion is formed on the outer surface of the outer sleeve, and a base portion embedded in the sleeve hole is protruded from the base portion, and is formed outwardly at the periphery of the base portion and embedded in the inserting groove. The outer ring surface of the latching ring is provided with a tooth-shaped engaging surface, and at the bottom of the base portion and at the periphery of the engaging hole, a convex portion for bulging the elastic member is provided. The fixing device according to claim 4, wherein the pulling portion is provided with at least one wrench or a pull ring. The fixing device according to claim 1, wherein the outer surface of the stopping portion of the fixing member is parallel or perpendicular to the longitudinal cutting surface, and at least one cutting surface is provided. The fixing device according to claim 1, wherein an angle between the guiding slope of the stopping portion and the bottom surface of the blocking portion is between 60° and 120°. The fixing device according to claim 1, wherein a spacing of the narrow portions of the second plate dissection groove is equal to or greater than a distance between the opposite longitudinal sections of the rod body and less than a distance between the two opposite arc surfaces. The fixing device according to claim 1, wherein the outer diameter of the fixing groove of the second plate is equal to or larger than the outer diameter of the rod body, and the tapered slope of the fixing groove has the same same as the stopping portion. The slope of the guide slope. A fixing device, the fixing component comprising a sleeve, an outer sleeve, a head, an elastic element and a fixing member, wherein: The sleeve is internally provided with a perforation, and the outer surface of the sleeve is annularly equidistantly recessed with a plurality of grooves, and the bottom of the sleeve is provided with a positioning portion; the outer sleeve is disposed above the sleeve, and the outer sleeve is provided inside the sleeve The sleeve is disposed in the accommodating space, and at the inner wall surface of the accommodating space is provided at least one longitudinal rib on the plurality of grooves for sliding; the head is disposed in the accommodating space of the outer sleeve, the head thereof The central portion is provided with an insertion hole; the elastic member is abutted between the head and the sleeve; the fixing member is disposed under the sleeve and penetrates into the through hole and is fixed to the head, and the fixing member has the embedded portion The rivet portion is fixed in the insertion hole, and the rod body is inserted into the perforation under the rivet portion, and the outer surface of the rod is longitudinally cut with respect to the two sides, and then the outer surface of the fixing member is opposite to the longitudinal surface. The two sides are formed with a curved surface, and the bottom of the rod body is convexly provided with a stopper portion, and a sloped inclined guide surface is formed at the top of the stopper portion.