CN217101202U

CN217101202U - Multifunctional bottle cap and correction bottle

Info

Publication number: CN217101202U
Application number: CN202220817194.4U
Authority: CN
Inventors: 张迎春
Original assignee: Henan Sumeite Stationery Co ltd
Current assignee: Henan Sumeite Stationery Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-02
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a multi-functional bottle lid and correction bottle, including the lid, the top surface of lid is provided with first halfbody, and first halfbody lock has the second halfbody, and first halfbody is concave to be equipped with the mounting groove, and the mounting hole has been seted up to the lateral wall of first halfbody, and the embedded blade that is equipped with of mounting groove, first halfbody internal crouch have first end tip stretch out outside the mounting hole, the installation complex is dismantled with the blade to the second end and is dialled the piece, and first halfbody internal cover is equipped with the torsional spring, and the first arm of torsional spring is dismantled and is installed on the second end tip of dialling the piece, and the second arm of torsional spring is installed on first halfbody. Compared with the prior art, except having the first function of protection smearing, still cut open the function to express delivery list, wrapping bag, the function is various, and whole operation is simple and easy, and the equipment is convenient, and the blade uses the automatic shrink back of accomplishing back, and convenient to use hides in the bottle lid always when not using and can not cause other people injured.

Description

Multifunctional bottle cap and correction bottle

Technical Field

The utility model relates to the field of articles for daily use, in particular to a correction bottle and a bottle cap on the same.

Background

As is known to all, online shopping is a common thing in daily life of people, the express packing bags or packing boxes received after online shopping are all pasted with express lists with addressee mobile phones, addressee names and addresses, the express lists are firmly pasted with the packing bags and the packing boxes and are extremely difficult to tear down, the addressees avoid information leakage, the bags or the boxes are not forcibly damaged by hands or relevant information is blackened by an oil pen every time, the problem of information leakage is solved through the operation, however, the mode that the bags or the boxes are damaged is time-consuming and labor-consuming, hands are easily injured, the mode that the oil pen is blackened is time-saving and labor-saving, the operation is convenient, the black oil pen can cause hands to be stained with black paint, and the use of people is also troublesome.

Therefore, the correction bottle with the correction liquid is arranged on the market, and the correction liquid can be coated on the express bill with the personal information only by opening the bottle cap when the correction bottle is used, so that the personal information is covered, and the function of preventing the personal information from being leaked is achieved. However, the bottle cap of the correction bottle only has the function of hiding the coating head, and the function is single.

Accordingly, the present inventors have made extensive studies on the above problems, and as a result, the present invention has been made.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a manifold multi-functional bottle lid of function.

Another object of the utility model is to provide a correction bottle that function is various

In order to achieve the above object, the solution of the present invention is such that:

a multifunctional bottle cap comprises a cap body; the cover body is of a hollow structure with one open end, the open end of the cover body is arranged below, a compression ring extends downwards from the inner top surface of the cover body, the top surface of the cover body extends upwards to form a first half body of the hollow structure, the first half body is detachably buckled with a second half body of the hollow structure, the first half body and the second half body enclose a closed annular shell, the outer side wall of the closed annular shell is smoothly and continuously arranged with the outer side wall of the cover body, the opposite surface of the first half body and the second half body is an opposite surface, a mounting groove extending along the vertical direction and upwards communicated with the top surface of the first half body is concavely arranged on the opposite surface of the first half body, a mounting hole extending along the vertical direction is arranged in the position, corresponding to the range of the mounting groove, of the outer side wall of the first half body, a blade with the upward cutting edge is arranged in the mounting groove, and a first end part extending out of the mounting hole is horizontally laid in the first half body, The second end of the shifting block is detachably mounted with the blade, a torsion spring is sleeved in the first half body, a first arm of the torsion spring is detachably mounted on the end part of the second end of the shifting block, and a second arm of the torsion spring is mounted on the first half body.

The left side surface of the first half body and the left side surface of the second half body are both open surfaces, a convex block is arranged on the left inner cavity surface of the first half body in a right protruding mode, a concave part extending into the convex block is arranged on the left outer side wall of the first half body in a concave mode corresponding to the convex block, a strip-shaped through hole communicated with the concave part and extending in the up-down direction is formed in the convex block, the strip-shaped through hole is the mounting hole, vertical plates which are arranged in a front-back transverse opposite mode at intervals and extend in the up-down direction are arranged on the right side surface of the convex block in a protruding mode, the distance between the two vertical plates is the mounting groove, and the blade is clamped between the two vertical plates.

The utility model discloses a mounting rod, including the installation pole, the installation pole is equipped with the through-hole on the blade, outside the through-hole was passed to protruding being equipped with on the right flank of the piece of stirring, the right-hand member terminal surface of the aforesaid installation pole is concave left and is equipped with the slip-in mouth that communicates with the upper end in card hole, the first arm of above-mentioned torsional spring passes above-mentioned card hole through the slip-in mouth, the integrative injection moulding of the piece of stirring and installation pole.

The protruding projection that is equipped with along left right direction extension of left and right sides of the left inside wall of above-mentioned first halfbody, above-mentioned projection is outside the front side of riser, and above-mentioned torsional spring suit is outside above-mentioned projection, and the left inside wall epirelief of above-mentioned first halfbody is equipped with the board that supports of top before being in the projection, and the above-mentioned setting that inclines is leaned on to the backup plate, and the concave notch that is equipped with of top surface of the above-mentioned backup plate, the second arm tip of above-mentioned torsional spring support to lean on in last notch.

The upper portion of the right inner side wall of the second half body is provided with a top backup plate which is arranged outside the right side of the blade in a left protruding mode, a limiting plate which is arranged between the backup plate and the convex column and is in leaning arrangement with the second arm of the torsion spring and a limiting column which is attached to the convex column relatively are arranged on the right inner side wall of the second half body in a left protruding mode, and the outer diameter of the limiting column is larger than that of the convex column.

The left inner side wall of the first half body is provided with four installation cylinders extending along the left-right direction in a rightward protruding mode, the end face of the right end of each four installation cylinders is open, two installation cylinders in the four installation cylinders are located on the front side face of the vertical plate on the front side and are arranged at intervals from top to bottom, the other two installation cylinders are located on the rear side face of the vertical plate on the rear side and are arranged at intervals from top to bottom, and clamping rods embedded in the installation cylinders are arranged on the right inner side wall of the second half body in a one-to-one protruding mode corresponding to the installation cylinders.

The front side and the rear side of the left side surface of the second half body are both provided with an embedded block which extends along the vertical direction in a left convex mode, and the front side and the rear side of the right side surface of the first half body are correspondingly provided with embedded notches for the embedded blocks to be embedded into.

The closed ring-shaped shell is a circular shell, and the top surface of the closed ring-shaped shell is a convex cambered surface which is convex upwards.

The bottle cap is characterized by further comprising the bottle cap, the upper end part of the bottle body extends into the lower end of the cap body and is screwed with the cap body, the lower end face of the bottle body is open, the lower end face of the bottle body extends upwards to form a threaded head with external threads, the threaded head is externally screwed with an atomizing head with a suction pipe, the suction pipe is located in the bottle body, and the atomizing head is externally screwed with a cap which hides the atomizing head in.

The lower extreme tip of above-mentioned body has first reducing section and the second reducing section that sets gradually by supreme down, is formed with first step face between the lower extreme of above-mentioned first reducing section and body, is formed with the second step face between first reducing section and the second reducing section, and the lateral wall of above-mentioned second reducing section is equipped with the external screw thread, the second reducing section do the thread head, the lateral wall of above-mentioned first reducing section is equipped with a plurality of arc sand grips that extend along the circumference of first reducing section, each arc sand grip circumference interval encircles the distribution, the inside wall of above-mentioned block is equipped with and supplies the arc sand grip to block in the closed loop shape recess of inside, the lower tip and the first step face of above-mentioned block close fit.

After the technical scheme is adopted, the multifunctional bottle cap of the utility model is matched with a bottle body with correction fluid for use; when tearing open the express delivery, stir the piece of dialling upwards, dial shifting up of piece and make the blade upwards move, the cutting edge of blade stretches out outside the lid top surface, the blade can be unpack apart the operation to the express delivery, need not to tear with the hand, there is also available blade to scratch the processing to the express delivery list, guarantee the leakage of personal information on the express delivery list, compared with the prior art, whole bottle lid is except having the protection and scribbles first function, also to the express delivery list, the wrapping bag cuts open the function, the function is various, and whole operation is simple and easy, convenient assembling, and the blade uses the automatic shrink back of accomplishing, high durability and convenient use, hide always when carrying and not using and can not cause injury in the bottle lid.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the present invention;

FIG. 3 is a perspective view of the present invention with the second half omitted;

fig. 4 is a perspective view of the second half of the present invention;

FIG. 5 is a perspective view of a correction bottle;

fig. 6 is an open perspective view of the correction bottle.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

The utility model discloses a multifunctional bottle cap, as shown in fig. 1-4, it uses with body 1 cooperation, and the bottle cap has lid 2, is equipped with correction fluid in the body 1 to the length direction of body 1 is upper and lower direction, and the upper end tip department of body 1 is equipped with the head of smearing 3 that supplies correction fluid in the body 1 to permeate on, and 2 spiral shell dresses in the upper end tip department of body 1 of lid, and the head of smearing 3 hides in lid 2.

The novel innovation point is as follows: the interior top surface of lid 2 extends downwards and has the clamp ring 21 that compresses tightly in the top surface outside of smearing the head, utilizes this clamp ring 21 can avoid smearing the problem that head 3 easily drops that leads to the fact of shaking when 3 are carried.

The top surface of the cover body 2 extends upwards to form a first half body 22 with a hollow structure, the first half body 22 is detachably buckled with a second half body 4 with a hollow structure, the first half body 22 and the second half body 4 enclose a closed annular shell, the outer side wall of the closed annular shell and the outer side wall of the cover body are smoothly and continuously arranged, the opposite direction of the first half body 22 and the second half body 4 is the left-right direction, the first half body 22 is the left side, the second half body 4 is the right side, the right side surface of the first half body 22 is in an open shape, the second half body 4 is in a hollow structure with an open left side surface, the bottom surface of the second half body 4 is overlapped on the right side part of the top surface of the cover body 2, a mounting groove which extends along the up-down direction and upwards extends to the top surface of the first half body 22 is concavely arranged on the right side surface of the first half body 22, a mounting hole 221 which extends along the up-down direction is arranged on the outer side wall of the first half body 22 corresponding to the range of the mounting groove, a blade 5 with an upward embedded blade is arranged in the mounting groove, a toggle block 6 with a first end extending out of the mounting hole and a second end detachably mounted and matched with the blade is horizontally arranged in the first half body 22, a torsion spring (not shown in the figure) is arranged in the first half body 22, a first arm of the torsion spring is detachably mounted on the second end of the toggle block 6, and a second arm of the torsion spring is mounted on the first half body 22.

Specifically, a convex block 222 is convexly arranged on the left inner cavity surface of the first half body 22 towards the right, a concave 100 extending into the convex block is concavely arranged at the left outer side wall of the first half body 22 corresponding to the convex block 222, a strip-shaped through hole communicated with the concave and extending along the up-and-down direction is formed in the convex block 222, vertical plates 23 which are transversely arranged at intervals in the front-and-back direction and extend along the up-and-down direction are convexly arranged on the right side surface of the convex block 222 towards the right, a notch 223 is concavely arranged between the two vertical plates 23 at the top surface of the first half body 22, the interval between the two vertical plates 23 and the notch form the mounting groove, and the blade 5 is clamped between the two vertical plates 23 and upwards extends out of the top surface of the closed annular shell through the notch 223.

The poking block 6 is arranged in the recess, the left side of the poking block 6 extends out of the recess leftwards, the right side surface of the poking block 6 is convexly provided with an installation rod 61 which passes through the installation hole and is arranged between the two vertical plates 23, the blade 5 is provided with a through hole (not shown in the figure), the installation rod 61 passes through the through hole in a tight fit manner, the installation rod 61 is provided with a clamping hole 611 which extends along the vertical direction and passes through the front side and the rear side of the installation rod, the right end surface of the installation rod 61 is concavely provided with a sliding inlet 612 communicated with the upper end part of the clamping hole leftwards, the first arm of the torsion spring passes through the clamping hole 611 through the sliding inlet 612, the first arm of the clamping spring can be detached and installed with the poking block 6 through the sliding inlet and the clamping hole, the installation rod 61 can be arranged to prevent the first arm of the clamping spring from falling off on the poking block 6, and the poking block and the installation rod are integrally injection-molded, so that the installation rod 61 is positioned at the sliding inlet 612 to be pressed up and down to reduce the outer diameter of the installation rod 61, it is easy to mount the lever 61 in a nested fit with the blade 5.

The left inside wall of first half 22 is protruding to be equipped with the projection 224 that extends along left right direction right, the projection 224 is excellent to be circular projection, the projection 224 is outside the front side of riser, namely the projection 224 is outside the place ahead of the riser of front side, the torsion spring suit is outside the projection 224, the left inside wall epirelief of first half 22 is equipped with the support that leans on board 225 that is in the projection 224 front upper side, support and lean on board 225 to incline the setting backward, support and lean on the concave upper notch 226 that is equipped with of top surface of board 225, the second arm tip of torsion spring supports and leans on in last concave notch.

The left inner side wall of the first half body 22 is provided with four mounting cylinders 227 extending along the left-right direction in a rightward protruding manner, the end face of the right end of each mounting cylinder 227 is open, two mounting cylinders of the four mounting cylinders are positioned on the front side surface of the vertical plate on the front side and are arranged at intervals up and down, the other two mounting cylinders are positioned on the rear side surface of the vertical plate on the rear side and are arranged at intervals up and down, namely, a square space is enclosed by the two vertical plates, the four mounting cylinders 227 are positioned at the four corners of the square space, the right inner side wall of the second half body 4 is convexly provided with the clamping rods 41 which are embedded in the mounting cylinders corresponding to the mounting cylinders 227 one by one, the left end part of each clamping rod 41 is provided with a guide head 411 which is gradually reduced from left to right, the guide heads 411 can be conveniently and quickly inserted into the mounting cylinders 227 during mounting, and the first half body and the second half body can be mounted in a buckled manner by plugging the mounting cylinders and the clamping rods.

The utility model discloses a multifunctional bottle cap, when tearing open the express delivery, stir the stirring piece 6 upwards, the upward shift of stirring piece 6 makes blade 5 upwards shift, the cutting edge of blade 5 stretches out outside notch 223, blade 5 can unpack the express delivery packing material, need not to tear by hand, also can cut the express delivery bill by blade 5, guarantee the leakage of personal information on the express delivery bill, compared with the prior art, the whole bottle cap has the function of protecting daubing head 3, also has the function of cutting the express delivery bill, the packing bag, the function is various, and the whole operation is simple and easy, the assembly is convenient, and when blade 5 is stirred upwards, the first arm of torsional spring is pulled upwards, in this way, blade 5 is released to stir by hand after using, blade 5 is automatically contracted back downwards by the reply of the first arm of torsional spring, convenient to use, hide in the bottle cap always and can not cause injury, the problem of avoiding the user to forget to withdraw and cause the cut is safe in utilization, and in addition, first halfbody and bottle lid integrated into one piece, the second halfbody is in the same place with first halfbody lock joint, makes things convenient for the dismouting of blade to change like this to make whole altering device's split part less.

In the novel structure, the upper part of the right inner side wall of the second half body 4 is provided with the abutting plate 42 which is positioned outside the right side of the blade 5 in a left protruding mode, the right inner side wall of the second half body 4 is provided with the limiting plate 43 which is positioned between the abutting plate 5 and the convex column 224 and is abutted against the second arm of the torsion spring and the limiting column 44 which is attached to the convex column relatively in a left protruding mode, and the outer diameter of the limiting column 44 is larger than that of the convex column 224; like this, utilize top backup plate 42 to make the blade be difficult for deviating from outside the stirring piece, have again to utilize limiting plate 43 and spacing post 44 to play spacing effect to the installation of torsional spring, avoid the torsional spring to take place to drop in carrying the process, guarantee stability in use.

In the present invention, the front and rear sides of the left side surface of the second half body 4 are both provided with the tabling blocks 45 extending in the up-down direction in a left protruding manner, the front and rear sides of the right side surface of the first half body 22 are provided with tabling notches (not shown in the figure) for the tabling blocks to be embedded in, and the degree of buckling of the first half body and the second half body is relatively tight by using the matching of the tabling blocks and the tabling notches.

In this is novel, close annular casing is circular casing, and the top surface of closing annular casing is the convex cambered surface that makes whole correction device's top be the circular arc structure like this, carries to grab and takes comparatively comfortablely.

This is novel, dial piece 6 excellent adoption love molding, dial piece 6's surface has a plurality of sand grips 62, utilize each sand grip 62 can strengthen user's finger contact friction, make and dial piece 6 difficult slipping when stirring, and love molding's design can obtain great operation contact surface under the prerequisite of less materials used, correspondingly sunken 100 interior top surface and interior bottom surface are corresponding to coincide with the top surface and the bottom surface molding of dialling the piece, utilize this love molding just multiplicable altering device's lovely and decorative, optimize wholly pleasing to the eye.

The utility model discloses a correction bottle, as shown in fig. 5, 6, except adopting the above-mentioned bottle lid structure, the improvement is that, the upper end tip of body 1 stretches into in the lower extreme of lid 2 and with lid spiral shell dress together, the lower extreme terminal surface of body 1 is spacious opening, the screw head (not shown in the figure) that has the external screw thread that the lower extreme terminal surface of body 1 upwards extends, the screw head is equipped with spray head 7 with straw outward, spray head 7 is known product, the straw is in body 1, spray head 7 outward is equipped with the block cap 8 that hides the spray head in; preferably, the lower end of the bottle body 1 is provided with a first reducing section 11 and a second reducing section (not shown in the figure) which are sequentially arranged from bottom to top, the outer diameter of the first reducing section 11 is larger than that of the second reducing section, a first step surface is formed between the first reducing section 11 and the lower end of the bottle body 1, a second step surface is formed between the first reducing section and the second reducing section, the outer side wall of the second reducing section is provided with external threads, the second reducing section is a thread head, the outer side wall of the first reducing section 11 is provided with a plurality of arc-shaped convex strips 111 extending along the circumferential direction of the first reducing section, the arc-shaped convex strips 111 are circumferentially distributed at intervals in a surrounding manner, the cap 8 is a hollow cylindrical structure with an open upper end, the inner side wall of the upper end of the cap 8 is concavely provided with a closed-loop-shaped groove 81 for the arc-shaped convex strips to be clamped in, and the lower end of the cap is tightly fitted with the first step surface; utilize the closed loop shape recess 81 of block 8 and the block cooperation of arc sand grip 111 to realize the dismouting of block 8, compare with prior art, make whole correction bottle except adopting to paint the operation through atomising head 7, still can adopt the spraying operation, the operation mode is various to utilize atomising head 7 can constantly add in body 1 and change liquid, make whole correction bottle can last used repeatedly, long service life uses the environmental protection.

The above embodiments and drawings do not limit the shape of the method and the fixture of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A multifunctional bottle cap comprises a cap body; the lid is the hollow structure that one end is open form to the open end of lid is down, its characterized in that: the inner top surface of the cover body extends downwards to form a compression ring, the top surface of the cover body extends upwards to form a first half body with a hollow structure, the first half body is disassembled and fastened with a second half body with a hollow structure, the first half body and the second half body enclose a closed annular shell, the outer side wall of the closed annular shell and the outer side wall of the cover body are smoothly and continuously arranged, the opposite surface of the first half body and the second half body is an opposite surface, a mounting groove which extends along the vertical direction and upwards extends to the top surface of the first half body is concavely arranged on the opposite surface of the first half body, a mounting hole which extends along the vertical direction is arranged on the outer side wall of the first half body corresponding to the mounting groove, a blade with an upward cutting edge is embedded in the mounting groove, a poking block with a first end part extending out of the mounting hole and a second end detachably mounted and matched with the blade is horizontally arranged in the first half body, and a torsion spring is sleeved in the first half body, the first arm of torsional spring is dismantled and is installed on the second end tip of setting aside the piece, and the second arm of torsional spring is installed on first halfbody.

2. The multifunctional bottle cap according to claim 1, wherein: the left side surface of the first half body and the left side surface of the second half body are both open surfaces, a convex block is arranged on the left inner cavity surface of the first half body in a right protruding mode, a concave part extending into the convex block is arranged on the left outer side wall of the first half body in a concave mode corresponding to the convex block, a strip-shaped through hole communicated with the concave part and extending in the up-down direction is formed in the convex block, the strip-shaped through hole is the mounting hole, vertical plates which are arranged in a front-back transverse opposite mode at intervals and extend in the up-down direction are arranged on the right side surface of the convex block in a protruding mode, the distance between the two vertical plates is the mounting groove, and the blade is clamped between the two vertical plates.

3. The multifunctional bottle cap according to claim 2, wherein: the utility model discloses a mounting rod, including the installation pole, the installation pole is equipped with the through-hole on the blade, outside the through-hole was passed to protruding being equipped with on the right flank of the piece of stirring, the right-hand member terminal surface of the aforesaid installation pole is concave left and is equipped with the slip-in mouth that communicates with the upper end in card hole, the first arm of above-mentioned torsional spring passes above-mentioned card hole through the slip-in mouth, the integrative injection moulding of the piece of stirring and installation pole.

4. The multifunctional bottle cap according to claim 2, wherein: the protruding projection that is equipped with along left right direction extension of left and right sides of the left inside wall of above-mentioned first halfbody, above-mentioned projection is outside the front side of riser, and above-mentioned torsional spring suit is outside above-mentioned projection, and the left inside wall epirelief of above-mentioned first halfbody is equipped with the board that supports of top before being in the projection, and the above-mentioned setting that inclines is leaned on to the backup plate, and the concave notch that is equipped with of top surface of the above-mentioned backup plate, the second arm tip of above-mentioned torsional spring support to lean on in last notch.

5. The multifunctional bottle cap according to claim 4, wherein: the upper portion of the right inner side wall of the second half body is provided with a top backup plate which is arranged outside the right side of the blade in a left protruding mode, a limiting plate which is arranged between the backup plate and the convex column and is in leaning arrangement with the second arm of the torsion spring and a limiting column which is attached to the convex column relatively are arranged on the right inner side wall of the second half body in a left protruding mode, and the outer diameter of the limiting column is larger than that of the convex column.

6. The multifunctional bottle cap according to claim 5, wherein: the left inner side wall of the first half body is provided with four installation cylinders extending along the left-right direction in a rightward protruding mode, the end face of the right end of each four installation cylinders is open, the two installation cylinders in the four installation cylinders are arranged on the front side face of the vertical plate on the front side at intervals from top to bottom, the two installation cylinders are arranged on the rear side face of the vertical plate on the rear side at intervals from top to bottom, and the right inner side wall of the second half body is provided with clamping rods which are correspondingly convexly arranged in the installation cylinders in a one-to-one correspondence mode.

7. The multifunctional bottle cap according to claim 5, wherein: the front side and the rear side of the left side surface of the second half body are both provided with an embedded block which extends along the vertical direction in a left convex mode, and the front side and the rear side of the right side surface of the first half body are correspondingly provided with embedded notches for the embedded blocks to be embedded into.

8. The multifunctional bottle cap according to claim 2, wherein: the closed ring-shaped shell is a circular shell, and the top surface of the closed ring-shaped shell is a convex cambered surface which is convex upwards.

9. The utility model provides a correction bottle, includes body and correction fluid, and correction fluid installs in the body, and the upper end tip department of body is equipped with the correction fluid that supplies in the body and permeates the head of smearing on, its characterized in that: the bottle cap according to claim 1 to 8, further comprising a cap according to claim 8, wherein the upper end of the body is inserted into the lower end of the cap and screwed with the cap, the lower end of the body is open, the lower end of the body is provided with an upwardly extending screw head having an external thread, the screw head is externally threaded with a spray head having a straw therein, and the straw is accommodated in the body, and the spray head is externally threaded with a cap for concealing the spray head therein.

10. A correction bottle as defined in claim 9, wherein: the lower extreme tip of above-mentioned body has first reducing section and the second reducing section that sets gradually by supreme down, is formed with first step face between the lower extreme of above-mentioned first reducing section and body, is formed with the second step face between first reducing section and the second reducing section, and the lateral wall of above-mentioned second reducing section is equipped with the external screw thread, the second reducing section do the thread head, the lateral wall of above-mentioned first reducing section is equipped with a plurality of arc sand grips that extend along the circumference of first reducing section, each arc sand grip circumference interval encircles the distribution, the inside wall of above-mentioned block is equipped with and supplies the arc sand grip to block in the closed loop shape recess of inside, the lower tip and the first step face of above-mentioned block close fit.