CN112983951A - Expansion nail with expansion block - Google Patents
Expansion nail with expansion block Download PDFInfo
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- CN112983951A CN112983951A CN202110429414.6A CN202110429414A CN112983951A CN 112983951 A CN112983951 A CN 112983951A CN 202110429414 A CN202110429414 A CN 202110429414A CN 112983951 A CN112983951 A CN 112983951A
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- expansion
- sleeve
- block
- screw
- expansion block
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- 239000002184 metal Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 20
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 238000003763 carbonization Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/065—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting the screw, nail or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
Abstract
The invention discloses an expansion nail with an expansion block, wherein at least one end of an inner cavity is provided with a first opening, the first opening is used for a screw to be screwed in, and the expansion block is arranged in the inner cavity; be provided with a plurality of mouths that expand that draw on the sleeve pipe lateral wall, a plurality ofly draw the mouth that expands and switch on mutually with the inner chamber, a plurality ofly draw the mouth that expands and arrange along sleeve pipe cross-section circumferencial direction array, a plurality ofly draw the mouth that expands and set up around the inflation piece. Different from the prior art, the expansion block and the expansion leading port are arranged in the technical scheme, so that the expansion block expands after being extruded, and the wall of the sleeve pipe positioned around the expansion block is driven to bend and expand; the expansion block not only improves the expansion range of the sleeve, but also prevents the sleeve from being propped against the resilience by the wall body after being expanded, prevents the expansion nail from loosening and further improves the stability of the expansion nail for fixing objects.
Description
Technical Field
The invention relates to an expansion nail or a heat-preservation nail, in particular to an expansion nail with an expansion block.
Background
Expansion nails, also known as expansion bolts, are fixing members often used in the construction field. The existing expansion screws are mainly divided into two categories: firstly, a plurality of cutting seams are arranged on the circumferential surface of the expansion pipe, when the expansion pipe is used, the expansion pipe is firstly placed in the mounting hole, then the screw rod is screwed into the expansion pipe, the rear end of the screw rod props the expansion pipe from the cutting seams along with the screwing of the screw rod into the expansion pipe, and the outer surface of the propped-open part of the expansion pipe is contacted with the hole wall of the mounting hole so as to fasten the screw rod in the mounting hole; secondly, set up a plurality of kerfs in the one end of keeping away from the entrance to a cave of expansion pipe, install for spherical end at the rear end of screw rod, during the use, put into the mounting hole with the screw rod that the cover was equipped with the expansion pipe, support the front end of expansion pipe in the outside of mounting hole, then outwards pull out the screw rod from the outside of mounting hole, finally make the spherical end on the screw rod enter into the inside of expansion pipe in order to strut the rear end of expansion pipe, and then with the screw rod fixed set up in the mounting hole.
The common expansion screw is divided into a screw part and an expansion part, when in use, the expansion part is fixed by firstly dismounting the screw, and then the screw penetrates through the expansion part to be fixed.
Disclosure of Invention
Therefore, the expansion nail with the expansion block needs to be provided, and the stability of the expansion nail for fixing the object is improved.
To achieve the above object, the present invention provides an expansion nail having an expansion block, comprising: a sleeve and an expansion block; the sleeve is provided with an inner cavity, at least one end of the inner cavity is provided with a first opening, a screw can be screwed into the first opening, the first opening is a screw screwing inlet, and the expansion block is arranged in the inner cavity; two or more expansion leading ports are arranged on the side wall of the sleeve, the two or more expansion leading ports are communicated with the inner cavity, the plurality of expansion leading ports are arrayed along the circumferential direction of the section of the sleeve, the gap interval sections of the two adjacent expansion leading ports are expansion leading strips, the plurality of expansion leading ports are arranged around the expansion block, and the expansion leading ports are used as expansion leading contacts;
the expansion nail with the expansion block is an expansion device formed by combining a sleeve and the expansion block and further comprises a screw, the screw is screwed in through a first opening of the expansion device, when the screw is screwed in or penetrates through a part of the expansion device, where the expansion block is arranged, the expansion block is extruded to expand around, and the expansion strip is led to expand outwards along with the expansion block, so that the drawing-resistant effect is improved.
Further, the induced expansion port comprises one or more gaps, the one or more gaps are arranged on the induced expansion port, and the gaps are used as expansion points for expansion.
Further, the sleeve is a metal sleeve, and the metal sleeve is a seamless metal sleeve or a slotted metal sleeve.
Further, the expansion blocks are wood and bamboo fiber expansion blocks;
or the expansion block is a wood or bamboo expansion block subjected to carbonization treatment;
or the expansion block is a nylon expansion block;
or the expansion block comprises: a plurality of expansion strips; the lengths of the expansion strips are arranged along the length direction of the sleeve, and the expansion strips are arrayed along the width direction of the sleeve;
or an expansion assembly made of metal material, which can expand or be squeezed to expand the expansion strip when the screw is screwed in.
Further, still be provided with the baffle on the sleeve pipe, the baffle be dog or support bar or bracing piece, the baffle fixed set up in sleeve pipe tail end inner wall, just the baffle is arranged in the inflation piece is kept away from first open one end, the baffle is used for preventing the downward slip when the inflation piece receives the screw extrusion.
Further, when the baffle that sets up on the sleeve pipe was bracing piece or support bar, the sleeve pipe on be equipped with two first through-holes, two first through-holes set up relatively, just two first through-holes are arranged in the inflation piece is kept away from first open one end, two are arranged in respectively at the bracing piece both ends on the first through-hole, the bracing piece is bent and is set up, the bracing piece is used for preventing the inflation piece slides down when receiving the screw extrusion, bracing piece or support bar bend the elasticity brace that generates after setting up, open tensile effect when combining with the pore wall, still open sleeve pipe location effect when the screw that will advance, make things convenient for the screw precession more.
Furthermore, the inner wall of the sleeve is provided with threads or/and the sleeve is provided with a plurality of second through holes which are arranged on the sleeve in an array manner and generate internal threads, and the threads or/and the internal threads are used for screws to pass through for meshing and screwing.
Furthermore, the thread height of the thread arranged on the inner wall of the sleeve is different or/and the diameter of the internal thread generated by the arrangement of the second through holes arranged on the sleeve is different, and when the screw is screwed in and passes through the thread on the inner wall of the sleeve or/and the internal thread, the corresponding thread with different thread height or internal thread with different diameter has unequal outward expansion tension.
Further, the device also comprises a disc; the disc is arranged above the first opening and is a metal disc or a nylon disc, and the disc is connected with the sleeve or/and is fixed through a screw.
Furthermore, a reverse branch is arranged outside the sleeve, and the reverse branch is integrated with the sleeve and used for improving the anti-pulling effect of the expansion nail.
Different from the prior art, the technical scheme has the advantages that through the arrangement of the expansion block and the expansion leading opening, the expansion block expands after being extruded, and meanwhile, the wall of the sleeve pipe (namely the expansion leading strip) positioned around the expansion block is driven to bend and expand; the expansion block not only improves the expansion range of the sleeve, but also prevents the sleeve from being propped against and rebounded by the wall body after being expanded, prevents the expansion nail from loosening and further improves the stability of the expansion nail for fixing objects.
The expansion block has the beneficial effects that when the expansion block adopts the wood block or the bamboo block, carbonization treatment is carried out, and when the expansion block subjected to carbonization treatment is used, the expansion block is not easy to age and deteriorate due to carbonization treatment, so that the expansion block is safer and firmer to apply, and is extremely low in cost and more practical.
The screw has the beneficial effects that through the thread with unequal thread heights of the threads arranged on the inner wall of the sleeve or/and the internal threads generated by different arrangement of the apertures of the second through holes arranged on the sleeve, when the screw passes through the threads with unequal thread heights or/and the internal threads generated by different arrangement of the second through holes, the outward expansion force of the screw at the corresponding parts of the second through holes with unequal thread heights or different apertures is unequal. Through this function, can arrange the second through-hole of arranging by low to high line tooth or \ and from big to little aperture by the screw precession end to the tail end at the sleeve pipe, can form when using the screw precession that the tail end expands more and the screw precession end expands little big-in-little outer anti-drawing force effect, it needs to notice that the sleeve pipe of this scheme is the slotted sleeve pipe, conveniently expands and opens, and the reunion inflation piece system uses, and the effect can be better.
Drawings
FIG. 1 is an assembled view of the sleeve, expansion blocks, circles and screws;
FIG. 2 is a cross-sectional view of the sleeve;
FIG. 3 is an enlarged view taken at A in FIG. 2;
fig. 4 is a view showing the construction of the sleeve and the disk.
Description of reference numerals:
1. a sleeve; 2. an expansion block; 3. a disc; 4. a screw; 5. an expansion inducing strip; 6. a gap;
11. an inner cavity; 12. a first opening; 13. expanding the opening; 14. a second through hole; 15. a first through hole;
131. and (4) a notch.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 4, the present invention provides an expansion nail having an expansion block, which can be used as an expansion nail or a heat preservation nail, and the expansion nail of the present invention includes: a sleeve 1 and an expansion block 2; the cannula 1 has an inner cavity 11, and at least one end of the inner cavity 11 has a first opening 12. The expansion nail with the expansion block is an expansion device formed by combining a sleeve and the expansion block, and further comprises a screw (which can be a self-tapping screw), the first opening 12 is used for screwing the screw 4 in, and the expansion block 2 is arranged in the inner cavity; the side wall of the sleeve 1 is provided with two or more expansion leading ports 13, the two or more expansion leading ports 13 are communicated with the inner cavity 11, the plurality of expansion leading ports 13 are arrayed along the circumferential direction of the section of the sleeve 1, or the plurality of expansion leading ports 13 are arrayed along the circumferential direction of the section of the sleeve 1, two adjacent expansion leading ports 13 are mutually independent, and the plurality of expansion leading ports 13 are arranged around the expansion block 2. Two adjacent draw the mouth mutual independence, two adjacent draw the mouth clearance bay section of expanding for drawing the strip 5 that expands, a plurality of draw the mouth that expands around the inflation piece sets up, draw the mouth that expands and use as the expanded contact that draws, preferentially follow the mouth that expands and expand when expanding promptly. The expansion nail with the expansion block is an expansion device formed by combining a sleeve and the expansion block, when the screw is screwed into or penetrates through the expansion device to be provided with the expansion block through the first opening of the expansion device, the expansion block is extruded to expand around, and the expansion strip 5 is led to expand outwards along with the expansion block, so that the drawing-resistant effect is improved.
In some embodiments, the opening 13 includes one or more indentations 131, and the one or more indentations 131 are disposed on the opening 13. When the plurality of the notches 131 are provided, the notches 131 can be arranged on two sides of the expansion guiding opening 13, and the notches 131 on the opposite sides of the adjacent two expansion guiding openings 13 have intervals and are used as expansion guiding points. It should be noted that the sleeve 1 may be a cylindrical sleeve 1 or a conical sleeve 1; preferably, the sleeve 1 is a cylindrical sleeve 1; in some embodiments, the side wall of the sleeve 1 is provided with a slit 6 (as shown in fig. 1), i.e. the sleeve of the present invention may be a slotted metal sleeve, and in some embodiments may also be a seamless metal sleeve. The slotted metal sleeve is preferred, so that the sleeve can be formed by one-time stamping, and the cost is reduced. When the screw 4 is screwed into the slit of the metal sleeve, the sleeve 1 can be easily unfolded to the periphery, namely, the corresponding hole is dead, the sleeve can be opened to the expansion and elastic effect through the slit 6, and can be more tightly engaged with the hole wall when the screw is screwed in, so that the anti-drawing force is directly improved. And the inner wall and the outer wall of the sleeve 1 are both provided with threads for improving the pulling resistance of the expansion nail.
It should also be noted that the expansion block 2 is placed at the bottom of the inner cavity 11, i.e. at the end of the inner cavity 11 away from the first opening 12; when the screw 4 is screwed in from the first opening 12 and presses the expansion block 2, the expansion block 2 will expand to the surroundings, thereby pressing the casing 1 and driving the casing 1 to expand to the surroundings; the bottom of the inner cavity 11 is filled with the expansion block 2, so that space redundancy during expansion is reduced, and the screw 4 directly acts on the inner wall of the casing 1 by extruding the expansion block 2; the initial expansion strip 5 is better expanded; in the conventional expansion nail, after the screw 4 is screwed into the inner cavity 11, the inner cavity 11 is filled first, and then the inner wall of the sleeve 1 is extruded, namely, the screw and the sleeve directly act, and the expansion force or the expansion range is limited. And this application passes through the setting of inflation piece 2 utilizes the inflation piece to fill the space between inner chamber 11 and the sleeve pipe 1 inner wall, and the extrusion of rethread screw precession power can be better expand to all around. It should be further noted that the expansion guiding opening 13 is formed through the sidewall of the casing 1, and a plurality of expansion guiding openings 13 are arranged around the expansion block 2; the length of the expansion guiding port 13 is arranged along the length direction of the sleeve 1, and the expansion guiding ports 13 are uniformly distributed; every draw and expand mouthful 13 both sides and all be provided with one or more breach 131, just breach 131 symmetry set up in draw and expand mouthful 13 both sides, and connect same draw a plurality of on the mouth 13 that expands breach 131 is direct conduction each other not, be located draw a plurality of mouthful 13 one side of expanding breach 131 interval certain distance. It should be further noted that the gaps 131 on different expansion ports 13 are not in communication with each other; due to the arrangement of the notch 131, the position of the notch 131 relative to the expansion guiding strip 5 is weak, and when the expansion block 2 expands, the position can be easily expanded; the inner cavity 11 around the section of the expansion guiding opening 13 is an expansion area.
It should be further noted that, in practical use, the screw 4 enters the inner cavity 11 through the first opening 12, and the upper half of the casing 1 is expanded by pressing the inner wall of the casing 1, while the screw 4 is continuously screwed in, when the screw 4 is screwed in and presses the expansion block 2, the screw 4 presses the expansion block 2, so that the expansion block 2 is explosively expanded to the surrounding, and the expansion-inducing strip 5 of the casing is also expanded together; the expansion of the sleeve 1 begins as soon as the screw 4 presses the expansion block 2.
According to the technical scheme, through the arrangement of the expansion block 2, the expansion leading opening 13 and the notch 131, the expansion block 2 expands after being extruded, and meanwhile, the expansion leading strips 5 of the sleeve 1 positioned around the expansion block 2 are driven to bend and expand; the expansion block 2 not only improves acting force and expansion range of the expansion guiding strip 5, but also prevents the sleeve 1 from being propped against and rebounded by the wall body after being expanded, prevents the expansion nail from loosening and further improves stability of fixing objects by the expansion nail.
In some embodiments, to further increase the expansion range of the end of the cannula 1, in some embodiments, the expansion block 2 is disposed at an end of the inner lumen 11 away from the first opening 12; of course, in some embodiments, the expansion block 2 may be placed at the end of the inner cavity 11 near the first opening 12, i.e. the screw 4 is screwed into the casing 1 to start to press the expansion block 2. It should be further noted that, in order to improve the rigidity of the sleeve 1 itself and prevent the sleeve 1 from being damaged when the screw 4 is screwed in, thereby affecting the fixing quality, the sleeve 1 is preferably a metal sleeve 1; of course, in some embodiments, the sleeve 1 may be a sleeve 1 made of other materials, and the sleeve 1 and the expansion block 2 are not integrally formed.
Referring to fig. 2 and 3, in order to prevent the expansion block 2 from moving downward when being pressed and ensure that the screw 4 can be screwed or embedded into the expansion block 2 to achieve the expansion effect, in some embodiments, the expansion block 2 is a wood or bamboo fiber expansion block 2 or a nylon expansion block 2; or the expansion block comprises: a plurality of expansion strips; the lengths of the expansion strips are arranged along the length direction of the sleeve, and the expansion strips are arrayed along the width direction of the sleeve. Preferably, the wood and bamboo fiber expansion block can be a carbonized wood block or bamboo block, and when the carbonized expansion block is used, the wood and bamboo fiber expansion block is less prone to aging and deterioration due to carbonization treatment, so that the application of the invention is safer and firmer, and the invention has extremely low cost and is more practical. It should be noted that the expansion block 2 may further include a plurality of expansion strips, the plurality of expansion strips are arranged along the length direction of the casing 1, that is, the plurality of expansion strips are vertically arranged, and the plurality of expansion strips are arranged in a close array. Or the expansion block 2 is an expansion component made of metal materials, and when the screw is screwed in, the expansion block can be expanded or extruded to cause the expansion strip to be expanded. The expansion strips which are vertically arranged can prevent the expansion block 2 from sliding downwards when being extruded, specifically, when the screw 4 is screwed into the expansion block 2, the tip of the screw 4 is inserted into the gap between the expansion strips, and the expansion strips are extruded to the periphery of the screw 4 by the continuous penetration of the screw 4, and the expansion direction of the expansion strips is perpendicular to the screwing direction of the screw 4.
In some implementations, the other end of the inner cavity 11 has a second opening. It should be noted that the second opening is arranged away from the first opening 12, and a gap 6 for facilitating expansion of the casing 1 is further arranged on the casing 1 around the second opening, and the gap can be communicated from the first opening 12 to the second opening; specifically, when the screw 4 is screwed to the second opening, the sleeve 1 is pressed by the screw 4 to be opened outwards, and the crack is convenient for the sleeve 1 to be opened.
In some implementations, the sleeve 1 is further provided with a baffle, the baffle is fixedly arranged on the inner wall of the sleeve 1, the baffle is arranged at one end of the expansion block 2 far away from the first opening 12, and the baffle is used for preventing the expansion block 2 from sliding downwards when being squeezed by the screw 4. It should be noted that when the expansion block 2 is screwed into the expansion block 2, the expansion block 2 will slide downwards, and in order to prevent the expansion block 2 from sliding downwards, the baffle is arranged at the end of the expansion block 2 away from the first opening 12; specifically, when the expansion block 2 slides downwards, the baffle will abut against the lower part of the expansion block 2, and an upward acting force is given to the expansion block 2; therefore, the expansion of the expansion block at the set position can be ensured.
Certainly, in other embodiments, the sleeve 1 is further provided with a support rod and two first through holes 15, the two first through holes are oppositely arranged, the two first through holes are arranged at one end of the expansion block 2 far away from the first opening 12, two ends of the support rod are respectively arranged on the two first through holes, the support rod is bent, and the support rod is used for preventing the expansion block 2 from sliding downwards when being extruded by the screw 4. It should be noted that the arrangement of the first through hole and the support rod prevents the expansion block 2 from moving downwards and simultaneously further improves the engagement effect of the expansion nail and the hole wall, and prevents the sleeve 1 from rotating along with the screw 4; specifically, the tail end of the casing 1 is provided with the first through hole 15, a support rod is implanted into the first through hole 15, the support rod is a metal strip or a metal spring rod, and the implanted support rod is bent by the branch strips exposed at the two sides of the casing. During the use, be equipped with the hole of bracing piece one end implantation match in advance earlier with the sleeve pipe, with screw precession sleeve pipe, can ensure that the sleeve pipe can not follow the screw and rotate together and can ensure effective screw in owing to the effect of bracing piece gib, work as when the precession power extrusion that inflation piece 2 received the screw precession, the bracing piece will play the resistance, ensures that inflation piece 2 is expanding in setting for the region. The first through hole 15 can be a round hole or a square hole and the like, so that the supporting rod can pass through the first through hole, and a stamping process can be adopted.
The bracing piece can also be opened and keep away with the hole that sets up in advance and open the interlock effect, and is concrete, when precession screw, 1 outer wall of sleeve pipe because the interlock effect of bracing piece and pore wall, 1 outer wall of sleeve pipe can not follow the screw and rotate simultaneously, opens the effect of location, makes things convenient for the screw precession more.
Referring to fig. 4, in some embodiments, a disc 3 is further included; the disc 3 is arranged above the first opening 12, and the disc 3 is a metal disc 3 or a nylon disc 3. The disc 3 is arranged at one end of the sleeve 1 close to the first opening 12, and the disc 3 is a nylon disc 3 or a metal disc 3. The disc 3 is a fixed disc 3, and the fixed disc 3 increases the contact area between the head of the screw 4 and the wall or the object to be fixed, so as to prevent the head of the screw 4 from sinking into the wall or the object to be fixed; meanwhile, the contact surface between the head of the screw 4 and the wall or the fixed object is increased, so that the head of the screw 4 is prevented from penetrating through the surface of the object to be fixed in the moving process. The disc 3 is connected or/and fixed with the sleeve 1 through a screw, and the disc 3 and the sleeve 1 can be of an integral structure or a separate structure.
In some embodiments, the inner wall of the sleeve is provided with threads or/and the sleeve 1 is further provided with a plurality of second through holes 14, the plurality of second through holes 14 are arranged on the sleeve 1 in an array manner, the plurality of second through holes 14 are communicated with the inner cavity 11, and the plurality of second through holes are arranged on the sleeve in an array manner to generate internal threads. The screw thread or/and the internal screw thread is used for the screw to pass through the occlusion and screwing. It should be noted that the second through hole 14 penetrates through the sidewall of the cannula 1, that is, the second through hole 14 is communicated with the inner cavity 11; when the screw 4 is screwed into the sleeve 1, the thread of the outer side wall of the screw rod is meshed with the thread or the second through hole 14, and meanwhile, the second through hole 14 also increases the friction force with the hole wall so as to improve the pulling resistance of the expansion nail.
In some embodiments, the thread height of the thread arranged on the inner wall of the sleeve is different or/and the diameter of the internal thread generated by the arrangement of the second through holes arranged on the sleeve is different, and when the screw is screwed in and passes through the thread on the inner wall of the sleeve or/and the internal thread, the corresponding thread with different thread height or internal thread with different diameter has unequal outward expansion tension. The pulling resistance of the expansion nail can be improved through unequal expansion force. Preferably, can be at the sleeve pipe by the screw precession mouth end to the tail end arrange the second through-hole of arranging from low to high thread or from big to little aperture, can form when using the screw precession that the tail end expands more and the screw precession mouth expands little big-inside-outside-small stretching resistance effect, it needs to notice that the sleeve pipe of this scheme is the sleeve pipe that has the seam, conveniently expands and opens, combines the use of inflation piece system again, and the effect can be better.
The sleeve 1 is externally provided with a reverse branch, the reverse branch is integrated with the sleeve, one-time punch forming can be adopted, and the direction of the reverse branch points to the top end from the bottom end of the sleeve 1 so as to improve the anti-pulling effect of the expansion nail.
It should be noted that, when the expansion block is an expansion assembly made of metal material, the expansion block can be expanded or extruded to expand the expansion strip when the screw is screwed in; the expansion assembly can be formed by combining metal support bars, the metal support bars can also be arranged in a folding mode, the head ends and the tail ends of the support bars face the end of the screw screwing inlet, of course, the expansion assembly can be arranged in any other mode, and the expansion assembly can be expanded when the screw is screwed in or can be expanded by extruding to enable the expansion bar to expand.
It should be noted that, the product has many holes, and also has many guiding expansion openings, notches, etc., and the processing looks very complicated, but otherwise, the product preferably adopts a metal plate, the dies corresponding to the key parts of the hole, the guiding expansion opening, the notch, the thread, etc. are preset, the preset product metal plate is quickly stamped through the dies, and then the expected product metal plate is looped into the metal slotted sleeve, and the metal slotted sleeve has the application conditions of the invention.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (10)
1. An expansion nail having an expansion block, comprising: a sleeve and an expansion block; the sleeve is provided with an inner cavity, at least one end of the inner cavity is provided with a first opening, a screw can be screwed into the first opening, the first opening is a screw screwing inlet, and the expansion block is arranged in the inner cavity; two or more expansion leading ports are arranged on the side wall of the sleeve, the two or more expansion leading ports are communicated with the inner cavity, the plurality of expansion leading ports are arrayed along the circumferential direction of the section of the sleeve, the gap interval sections of the two adjacent expansion leading ports are expansion leading strips, the plurality of expansion leading ports are arranged around the expansion block, and the expansion leading ports are used as expansion leading contacts;
the expansion nail with the expansion block is an expansion device formed by combining a sleeve and the expansion block and further comprises a screw, the screw is screwed in through a first opening of the expansion device, when the screw is screwed in or penetrates through a part of the expansion device, where the expansion block is arranged, the expansion block is extruded to expand around, and the expansion strip is led to expand outwards along with the expansion block, so that the drawing-resistant effect is improved.
2. An expansion nail with an expansion block according to claim 1, characterized in that the expansion opening comprises one or more notches, the one or more notches are arranged on the expansion opening, and the notches are used as expansion points for expansion.
3. An expansion nail with an expansion block according to claim 1, characterized in that the sleeve is a metal sleeve, and the metal sleeve is a seamless metal sleeve or a slotted metal sleeve.
4. The expansion nail with the expansion block as claimed in claim 1, wherein the expansion block is a wood or bamboo fiber expansion block;
or the expansion block is a wood or bamboo expansion block subjected to carbonization treatment;
or the expansion block is a nylon expansion block;
or the expansion block comprises: a plurality of expansion strips; the lengths of the expansion strips are arranged along the length direction of the sleeve, and the expansion strips are arrayed along the width direction of the sleeve;
or an expansion assembly made of metal material, which can expand or be squeezed to expand the expansion strip when the screw is screwed in.
5. The expansion nail with the expansion block as claimed in claim 1 or 4, wherein a baffle is further arranged on the sleeve, the baffle is a stop block or a support bar or a support rod, the baffle is fixedly arranged on the inner wall of the tail end of the sleeve, the baffle is arranged at one end of the expansion block far away from the first opening, and the baffle is used for preventing the expansion block from sliding downwards when being extruded by the screw.
6. The expansion nail with the expansion block as claimed in claim 1 or 5, wherein when the baffle arranged on the sleeve is a support rod or a support bar, the sleeve is provided with two first through holes, the two first through holes are oppositely arranged, the two first through holes are arranged in the expansion block away from the first open end, the two ends of the support rod are respectively arranged on the two first through holes, the support rod is bent and arranged, the support rod is used for preventing the expansion block from sliding downwards when being extruded by a screw, the elastic support bar generated after the support rod or the support bar is bent and arranged is combined with the hole wall to achieve a tensile effect, when the screw is screwed in, the sleeve is positioned, and the screw is screwed in more conveniently.
7. The expansion nail with the expansion block as claimed in claim 1, wherein the inner wall of the sleeve is provided with threads or/and the sleeve is provided with a plurality of second through holes, the second through holes are arranged on the sleeve in an array manner and generate internal threads, and the threads or/and the internal threads are used for screws to pass through occlusion and screw.
8. The expansion nail with the expansion block as claimed in claim 7, wherein the thread of the thread on the inner wall of the sleeve has different thread heights or/and different inner thread diameters generated by the arrangement of the second through holes on the sleeve, and when the screw is screwed in and passes through the thread on the inner wall of the sleeve or/and the inner thread, the corresponding threads with different thread heights or the inner threads with different diameters have different outward expansion tensions.
9. An expansion nail with an expansion block according to claim 1, further comprising a disc; the disc is arranged above the first opening and is a metal disc or a nylon disc, and the disc is connected with the sleeve or/and is fixed through a screw.
10. An expansion nail with an expansion block as claimed in claim 1 or 9, wherein the sleeve is externally provided with a reverse branch, and the reverse branch is integrated with the sleeve for improving the pulling resistance of the expansion nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110429414.6A CN112983951A (en) | 2021-04-21 | 2021-04-21 | Expansion nail with expansion block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110429414.6A CN112983951A (en) | 2021-04-21 | 2021-04-21 | Expansion nail with expansion block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983951A true CN112983951A (en) | 2021-06-18 |
Family
ID=76341479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110429414.6A Pending CN112983951A (en) | 2021-04-21 | 2021-04-21 | Expansion nail with expansion block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112983951A (en) |
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