Detachable shoot nail assembly

Abstract

The utility model relates to the field of fasteners of shoot nail components, and provides a detachable shoot nail component, which comprises a nail head, a pull-blasting head, an expansion sleeve and a nail body, the expansion sleeve is sleeved outside the nail body, the nail body is integrally and rotatably inserted and connected to a connecting part of an inner cavity of the nail head, and the pull-blasting head is sleeved outside a screw thread of a nail rod. Meanwhile, the pull blasting head is driven to move front and back, the displacement generates two effects, the first effect is to force an expansion groove formed in the front end of the expansion sleeve to be expanded, the second effect is to enable a nail rod thread to rotationally exit in the opposite direction, the detachable nail shooting assembly is suitable for being excited by a conventional nail shooting device in the market to provide power, a power source does not need to be switched on, and operation is convenient. According to the detachable nail shooting assembly, electric hammer punching and manual installation are not needed, disassembly is convenient, a fastened object is not damaged, the plastic shell nail shooting pill arranged and installed on the detachable nail shooting assembly is a universal plastic shell nail shooting pill in the market, the production and manufacturing cost is low, and great convenience is brought to production and manufacturing and users.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of nail shooting assembly fastener, specifically relates to a detachable nail shooting assembly. BACKGROUND

[0002] Traditional nail shooting is a direct fastening technology, usually composed of a nail, the nail body is smooth, without expansion structure, easy to loosen, fall off, poor stability, prone to fall off with the installation base layer, in addition, if the traditional nail shooting needs to be disassembled after fastening the object, usually needs to use the angle grinder to cut the nail cap, destructive disassembly, disassembly is time-consuming and laborious and prone to damage the fastened object, traditional expansion screw is a mechanical fastening technology, has expansion structure, but in use, all need to use the electric hammer to pre-punch the hole, then use artificial to install the expansion screw, then use the tool to fasten the nut expansion, it is time-consuming and laborious to use the electric hammer to punch the hole, the installation procedure is more, and the working efficiency is low. SUMMARY

[0003] In order to solve the problem that the traditional nail shooting does not have expansion structure, is easy to loosen, fall off and poor stability in the prior art, in order to solve the problem that the traditional nail shooting needs to be disassembled after fastening the object, usually uses the angle grinder to cut the nail cap, destructive disassembly, time-consuming and laborious and prone to damage the fastened object in the prior art, in order to overcome the problem that the traditional expansion screw needs to be pre-punched by the electric hammer, then the expansion screw is installed by artificial, it is time-consuming and laborious to punch and install, the installation procedure is more, and the working efficiency is low in the prior art.

[0004] The utility model solves the technical problem that: in view of the above defects of the prior art, provide a detachable nail shooting assembly, overcome the defects that the traditional nail shooting does not have expansion structure in the prior art, the traditional nail shooting usually uses the angle grinder to cut the nail cap when disassembling, destructive disassembly, time-consuming and laborious and prone to damage the fastened object, the traditional expansion screw needs to be pre-punched by the electric hammer when using, then the expansion screw is installed by artificial, it is time-consuming and laborious to punch and install, the installation procedure is more, and the working efficiency is low.

[0005] The utility model discloses a technical scheme adopted for solving its technical problem is: provide a detachable shoot nail assembly, including nail head, pull out the head, expansion sleeve, nail body, the nail body setting nail rod thread front end outer cover is equipped with pull out the head, the expansion sleeve outer cover is equipped with the appropriate position of pull out the head and nail body, the corresponding position of expansion sleeve and pull out the head is close contact, the corresponding position of expansion sleeve and nail body is close contact and can relatively rotate, the nail body integral rotation inserts and is connected in the nail head inner chamber connecting portion, when the nail body positive and negative direction rotates, drive pull out the head and displace along nail rod thread front and back, displacement produces two kinds of actions, action one is to force expansion sleeve front end setting expansion groove to expand, action two can realize nail rod thread and rotate and exit along the opposite direction, the detachable shoot nail assembly uses shoot nail bullet and shoot nail separates the installation of shoot nail ware or has the mechanical impact of shoot nail ware excitation and provides power.

[0006] The detachable shoot nail assembly further has the following preferred scheme: the nail head includes a nail tip, a residual nail body, and a nail head inner chamber connecting portion; the nail tip is in the shape of a sharp bullet head, which is beneficial to shooting into a mounting base; the residual nail body has an outer circle diameter that is matched with the outer circle diameter of the pull-out head and the expansion sleeve, so as to avoid the situation that the pull-out head and the expansion sleeve are blocked when the shoot nail assembly is shot into the mounting base; the nail head inner chamber connecting portion accommodates and connects the nail body front end connecting portion; the nail body is integrally rotated and inserted into the nail head inner chamber connecting portion; and the nail head is in a static state after being shot into the mounting base and forming extrusion engagement with the mounting base.

[0007] The detachable shoot nail assembly further has the following preferred scheme: the pull-out head includes a pull-out head inner thread and a conical outer cylinder; the pull-out head is sleeved on the front end of the nail rod thread; and the pull-out head inner thread is spirally connected with the nail rod thread.

[0008] The detachable shoot nail assembly further has the following preferred scheme: the expansion sleeve includes a plurality of expansion grooves; the expansion sleeve is sleeved on the appropriate position of the pull-out head; the rear end of the expansion sleeve is in close contact with the cross head screw cap; when the pull-out head is displaced backward along the nail rod thread, the expansion grooves provided on the expansion sleeve are forced to expand and form extrusion engagement with the mounting base; and when the detachable shoot nail assembly is shot into the mounting base, the cross head screw cap is used to push the expansion sleeve to be shot into the mounting base.

[0009] The detachable shoot nail assembly further has the following preferred scheme: the nail body includes a nail body front end connecting portion, a nail rod thread, a nail rod, and a cross head screw cap; the outer circle diameter of the cross head screw cap is greater than the outer circle diameter of the expansion sleeve; the nail body is integrally made or welded; the nail body front end connecting portion is inserted into the nail head inner chamber connecting portion; and the nail body is integrally rotated and inserted into the nail head inner chamber connecting portion.

[0010] Further, the preferred embodiment of the detachable nail assembly is that the nail body is provided with a nail rod thread and a nail rod, which can be set in a nail rod thread state, and the nail rod is removed to adapt to the application of a smaller size detachable nail assembly.

[0011] Further, the preferred embodiment of the detachable nail assembly is that the cross head screw cap provided on the nail body can be set in a hexagonal flange surface screw cap state, and the cross head screw cap is replaced, and can also be set in a disc head screw cap, a cross slot screw cap, an internal hexagonal screw cap, or a hexagonal nut with a gasket screw cap state, and the nail body provided in other screw cap states is integrally rotated and inserted into the nail head inner cavity connection part.

[0012] Further, the preferred embodiment of the detachable nail assembly is that the cross head screw cap provided on the nail body can be set in a nail body rear end thread connection part state, and the cross head screw cap is replaced, and the nail body provided in the nail body rear end thread connection part state is integrally rotated and inserted into the nail head inner cavity connection part, the outer diameter of the nail body rear end thread connection part is greater than the outer diameter of the expansion sleeve, the nail body provided in the nail body rear end thread connection part state is integrally formed or integrally welded, and the thread connection part is provided with a cross slot screw groove or a radial hole.

[0013] Further, the preferred embodiment of the detachable nail assembly is that the tail part of the detachable nail assembly can be provided with a plastic shell nail bullet to adapt to the conventional press type nail gun on the market.

[0014] Further, the preferred embodiment of the detachable nail assembly is that the nail body front end connection part can be set in a nail body front end thread connection part, and the nail body connection part is replaced, and the nail head inner cavity connection part is set in a nail head inner cavity thread connection part, and the nail head inner cavity connection part is replaced, the nail body provided in the nail body front end thread connection part is connected to the nail head provided in the nail head inner cavity thread connection part in a threaded connection manner, and is applied to the connection of steel structure pipelines or emergency repair of ships, and the detachable nail assembly may be caused to fall off after penetrating the steel plate.

[0015] Further, the preferred embodiment of the detachable nail assembly is that the nail head and the nail body can be integrally formed or integrally welded, and are also applied to the connection of steel structure pipelines or emergency repair of ships, and the detachable nail assembly may be caused to fall off after penetrating the steel plate.

[0016] Further, the preferred embodiment of the detachable nail assembly is that the expansion sleeve provided on the detachable nail assembly is provided with a round fastening piece, a square fastening piece, a U-shaped pipe clamp accessory, or a positioning sealing gasket which is a conventional nail accessory on the market.

[0017] The beneficial effects of this utility model are as follows: The detachable nail assembly designed in this utility model utilizes a nail gun to provide power, eliminating the need for a power supply, a hammer drill, or manual installation. First, the nail head impacts the mounting base to autonomously punch a hole. Then, a crosshead screw cap drives an expansion sleeve into the mounting hole to complete autonomous installation. Finally, the crosshead screw cap secures the depth of the detachable nail assembly within the mounting hole, instantly completing the autonomous punching and installation functions of the detachable nail assembly. This detachable nail assembly can replace some plastic expansion plugs, some small-diameter expansion screws, and some expansion nails that require hammer drilling. This product is time-saving, labor-saving, convenient, and fast. When the nail body rotates in both directions, it drives the expansion head to move back and forth along the nail thread. This displacement has two effects: First, when the nail body rotates in the forward direction, it simultaneously drives the expansion head to move backward, forcing the expansion groove to expand. This creates a greater compressive and gripping force between the detachable nail assembly and the installation substrate, achieving the mechanical fastening function of the detachable nail assembly with an expansion structure. This ensures that the detachable nail assembly is firmly connected to the installation substrate, solving the problem of traditional nails lacking an expansion structure. Second, when the nail body rotates in the reverse direction, it drives the expansion head to move forward, causing the nail body to disengage from the expansion head. This allows the detachable nail assembly to rotate out in the reverse direction without damaging the fastened part. This invention addresses the problem of traditional nail gun disassembly requiring cutting the nail head and involving destructive disassembly, which can easily damage the fastened object. The detachable nail gun assembly, available with and without plastic-cased cartridges, is compatible with both propellant-based and mechanically impact-based nail guns, providing power to a wide variety of nail gun types without requiring special tools. The detachable assembly includes screw heads that can be configured in various positions, facilitating compatibility with various installation tools and application scenarios. The plastic-cased cartridges used in the detachable assembly are common and readily available, saving manufacturing costs. This detachable nail gun assembly is used for securing fire-fighting equipment, steel structure pipelines, and ship fastening. This product has a wide range of applications, including emergency repairs, installation of building doors and windows, fixing of wooden keels, fixing of light steel keels, ceiling installation, hanging of paintings, installation of light fixtures, fixing of inorganic pre-coated board wall panel dry-hanging keel frames, fixing of mineral wool sound-absorbing board ceiling and wall panel dry-hanging keel frames, curtain installation, and surveillance system installation. The detachable nail assembly features minimal protrusion of the Phillips head screws from the surface of the fastened object after fastening, resulting in a neat and aesthetically pleasing appearance. In some limited usage scenarios, this minimal protrusion also prevents interference with subsequent installation operations. The detachable nail assembly has a wide range of applications, is quick and convenient to install, requires no power connection, no electric hammer drilling, and no special installation tools, bringing great convenience to both manufacturers and users. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0019] Figure 1 is a three-dimensional structure schematic diagram of an embodiment of the utility model;

[0020] Figure 2 is an explosion structure schematic diagram of an embodiment of the utility model;

[0021] Figure 3 is a three-dimensional structure schematic diagram of another use state of the shank of an embodiment of the utility model;

[0022] Figure 4 is a three-dimensional structure schematic diagram of the cross head screw cap being replaced by other screw cap state of an embodiment of the utility model;

[0023] Figure 5 is a three-dimensional structure schematic diagram of the cross head screw cap being replaced by screw thread connection part state of an embodiment of the utility model;

[0024] Figure 6 is a three-dimensional structure schematic diagram of the detachable shooting nail assembly of an embodiment of the utility model being installed with plastic shell shooting nail bullet;

[0025] Figure 7 is a main view direction sectional view of an embodiment of the utility model in use state;

[0026] Figure 8 is a main view direction sectional view of an embodiment of the utility model in dismounting state;

[0027] Figure 9 is a sectional view of the nail head and the shank being connected together in a threaded connection mode of an embodiment of the utility model;

[0028] Figure 10 is Figure 9 the local enlarged view of A position in the middle.

[0029] The drawing reference: 1-nail head, 2-pull explosion head, 3-expansion sleeve, 4-shank, 5-plastic shell shooting nail bullet, 11-nail tip, 12-residual shank, 13-nail head inner cavity connecting part, 14-nail head inner cavity threaded connection part, 21-pull explosion head inner thread, 22-tapered outer cylinder, 31-expansion groove, 41-shank front end connecting part, 42-nail rod thread, 43-nail rod, 44-cross head screw cap, 45-hexagonal flange surface screw cap, 46-shank rear end threaded connecting part, 47-cross slot screw groove, 48-shank front end threaded connecting part. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below in combination with the drawings so as to make the technical personnel of the technical field understand the utility model.

[0031] In combination with Figure 1 , Figure 2The detachable nail shooting assembly of the embodiment comprises a nail head 1, a pull-out head 2, an expansion sleeve 3, and a nail body 4. The nail head 1 comprises a nail tip 11, a residual nail body 12, and a nail head inner cavity connecting part 13. The pull-out head 2 comprises a pull-out head inner thread 21 and a conical outer cylinder 22. The expansion sleeve 3 comprises expansion grooves 31. The nail body 4 comprises a nail body front end connecting part 41, a nail rod thread 42, a nail rod 43, and a cross head screw cap 44.

[0032] Specifically, the nail rod thread 42 of the nail body 4 is sleeved with the pull-out head 2 at the front end. The expansion sleeve 3 is sleeved at a suitable position of the pull-out head 2 and the nail body 4. The expansion sleeve is in close contact with the corresponding position of the pull-out head. The expansion sleeve is in close contact with the corresponding position of the nail body and can rotate relative to the corresponding position of the nail body. The expansion sleeve 3 is provided with a plurality of expansion grooves 31. The nail body 4 is integrally formed or welded. The nail body front end connecting part 41 is inserted and connected to the nail head inner cavity connecting part 13. The nail body 4 is integrally rotated and inserted and connected to the nail head inner cavity connecting part 13. The nail rod thread 42 is sleeved with the pull-out head 2 at the front end. The expansion sleeve 3 is sleeved at a suitable position before and after the conical outer cylinder 22 of the pull-out head 2. The rear end is in close contact with the cross head screw cap 44. Further, when the detachable nail shooting assembly is in use, first, the detachable nail shooting assembly is installed on a nail shooter. The nail shooter is aimed at the fastened object. The nail shooter is used to ignite gunpowder or use the mechanical impact force of the nail shooter to impact the detachable nail shooting assembly. First, the nail head 1 impacts the installation base layer to complete the self-punching of the installation base layer. Then, the cross head screw cap 44 drives the expansion sleeve 3 to shoot into the installation hole to complete the self-installation. Then, the cross head screw cap 44 fixes the depth of the detachable nail shooting assembly shot into the installation hole. Instantly, the detachable nail shooting assembly realizes the functions of self-punching and self-installation. When the detachable nail shooting assembly is shot into the installation base layer and completed, the nail head 1 and the installation base layer form a squeezing bite force and are in a static state. When the detachable nail shooting assembly is fastened to the object, the nail body 4 is rotated in the positive direction. At the same time, the nail body front end connecting part 41 is rotated in the positive direction in the nail head inner cavity connecting part 13. The pull-out head 2 is driven to displace along the nail rod thread 42 to the rear. The expansion groove 31 provided at the front end of the expansion sleeve 3 is forced to expand radially and generate a squeezing bite force with the installation base layer, so that the detachable nail shooting assembly is stably connected to the installation base layer. When the detachable nail shooting assembly is disassembled, the nail body 4 is rotated in the reverse direction. At the same time, the pull-out head 2 is driven to displace along the nail rod thread 42 to the front, so that the nail body 4 is separated from the pull-out head 2, and the nail body front end connecting part 42 is separated from the nail head inner cavity connecting part 13. The nail body 4 can be pulled out of the installation base layer, realizing the detachable function of the detachable nail shooting assembly. The detachable nail shooting assembly uses the conventional nail shooter on the market to ignite gunpowder or uses the nail shooter with mechanical impact force to provide power. At the same time, when used on the installation base layer of soft material such as wood base layer, a hammering method can be used to provide power, without the need to prepare special installation tools.

[0033] In combination Figure 2 , the nail head 1 of the detachable nail assembly of the embodiment: the nail head 1 comprises a nail tip 11, a residual nail body 12, and a nail head inner cavity connecting part 13. Specifically, the nail tip 11 is provided in the shape of a sharp bullet head, which is conducive to being shot into the installation base layer. The highest point of the outer diameter of the residual nail body 12 matches the outer diameter of the detonation head 2 and the expansion sleeve 3, so as to avoid the situation that the detonation head 2 and the expansion sleeve 3 are blocked when the detachable nail assembly is shot into the installation base layer. The nail head inner cavity connecting part 13 accommodates a nail body front end connecting part 41. The nail body front end connecting part 41 can rotate in the positive and negative directions in the nail head inner cavity connecting part 13. The residual nail body 12 is provided with the highest point of the outer diameter matching the outer diameter of the detonation head 2 and the expansion sleeve 3, which realizes the self-punching function and the self-shooting function of the detachable nail assembly on the installation base layer. The detachable nail assembly can be powered by using a nail shooter without the need for pre-connection of power supply and the use of an electric hammer for punching, thereby saving time and effort.

[0034] In combination Figure 2 , the detonation head 2 of the detachable nail assembly of the embodiment: the detonation head 2 comprises a detonation head inner thread 21 and a conical outer cylinder 22. The detonation head 2 is sleeved on the front end of a nail rod thread 42. When the nail body is integrally rotated in the positive and negative directions, the detonation head 2 is driven to displace forward and backward along the nail rod thread 42. Specifically, the detonation head inner thread is screw-connected with the nail rod thread provided on the nail body.

[0035] In combination Figure 2 , the expansion sleeve 3 comprises a plurality of expansion grooves 31. The front end of the expansion sleeve 3 is sleeved on the detonation head 2 at a suitable position, and the rear end is in close contact with a cross head screw cap 44. The expansion sleeve 3 is in close contact with the corresponding position of the nail body 4 and can rotate relatively. When the detonation head 2 displaces backward along the nail rod thread 42, the expansion grooves 31 provided at the front end of the expansion sleeve 3 are forced to expand radially and form extrusion occlusion with the installation base layer, so that the detachable nail assembly is stably connected on the installation base layer, thereby realizing the function of the detachable nail assembly having a mechanical fastening expansion structure. Specifically, when the detachable nail assembly is shot into the installation base layer, the cross head screw cap 44 pushes the expansion sleeve 3 to be shot into the installation base layer.

[0036] In combination Figure 2 , the nail body 4 of the detachable nail assembly of the embodiment: the nail body 4 comprises a nail body front end connecting part 41, a nail rod thread 42, a nail rod 43, and a cross head screw cap 44. The outer diameter of the cross head screw cap 44 is greater than the outer diameter of the expansion sleeve 3. When the detachable nail assembly is shot into the installation base layer, the cross head screw cap 44 pushes the expansion sleeve 3 to be shot into the installation base layer. The nail body 4 is integrally formed or integrally welded. Specifically, the nail body front end connecting part 41 is inserted and connected to the nail head inner cavity connecting part 13. The nail body 4 is integrally rotated and inserted and connected to the nail head inner cavity connecting part 13.

[0037] In combination Figure 2 , Figure 3 , the embodiment of a detachable nail assembly: the nail body 4 is provided with a nail rod threaded portion 42 and a nail rod 43, which can be provided in a nail rod threaded portion 42 state, and the nail rod portion is removed to adapt to the application of a smaller size detachable nail assembly, the nail body provided in a nail rod threaded portion 42 state is integrally formed or integrally welded, specifically, the nail body front end connecting portion 41 provided in a nail rod threaded portion 42 state is inserted and connected to the nail head inner cavity connecting portion 13, and the nail body provided in a nail rod threaded portion 42 state is integrally connected and rotated to the nail head inner cavity connecting portion 13.

[0038] In combination Figure 4 , the embodiment of a detachable nail assembly: the cross head screw cap 44 provided on the nail body 4 can be provided in a hexagonal flange surface screw cap 45 state, and the cross head screw cap 44 is replaced, the detachable nail assembly provided in a hexagonal flange surface screw cap 45 state is suitable for outdoor rainproof or application scenarios with higher sealing requirements, the cross head screw cap 44 can also be provided in a disc head screw cap, a cross slot screw cap, an internal hexagonal screw cap, or a hexagonal surface nut with a gasket state, and the cross head screw cap is replaced, the nail body front end connecting portion 41 provided in other screw cap states is inserted and connected to the nail head inner cavity connecting portion 13, the nail body provided in other screw cap states is integrally connected and rotated to the nail head inner cavity connecting portion 13, and the nail body provided in other screw cap states is integrally formed or integrally welded.

[0039] In combination Figure 5 , the embodiment of a detachable nail assembly: the cross head screw cap 44 provided on the nail body 4 can be provided in a nail body rear end threaded connecting portion 46 state, and the cross head screw cap 44 is replaced, the nail body provided in a nail body rear end threaded connecting portion 46 state is integrally connected and rotated to the nail head inner cavity connecting portion 13, the outer diameter of the nail body rear end threaded connecting portion 46 is greater than the outer diameter of the expansion sleeve 3, the nail body provided in a nail body rear end threaded connecting portion 46 state is integrally formed or integrally welded, and the nail body rear end threaded connecting portion 46 is provided with a cross slot screw groove 47 or a radial hole, specifically, the nail body rear end threaded connecting portion 46 is provided with a cross slot screw groove to apply torque to the threaded connecting portion for fastening or disassembling the detachable nail assembly, and the detachable nail assembly provided with the nail body rear end threaded connecting portion is suitable for connecting a ceiling wire rod or connecting other components.

[0040] In combination Figure 6In this embodiment, a detachable nail gun assembly is provided with a plastic-cased nail gun cartridge 5 installed at the tail end of the detachable nail gun assembly, so as to be compatible with conventional push-button nail guns on the market, making the application tool more convenient. Specifically, the plastic-cased nail gun cartridge installed is a conventional plastic-cased nail gun cartridge on the market, which does not require special preparation.

[0041] Combination Figure 7 This embodiment describes a detachable nail assembly: When in use, the detachable nail assembly is tightly engaged with the mounting base. After the nail head 1 is driven into the mounting base, it forms a compressive engagement force with the mounting base and remains stationary. When the nail body 4 rotates in the positive direction, the connecting part 41 at the front end of the nail body rotates simultaneously within the connecting part 13 of the nail head cavity, causing the expansion head 2 to move backward along the nail shank thread 42. This forces the expansion groove 31 to expand and tightly engage with the mounting base, greatly increasing the compressive engagement force between the detachable nail assembly and the mounting base. This ensures the detachable nail assembly is securely connected to the mounting base. After fastening an object, the Phillips head screw cap 44 is tightly attached to the fastened object. The Phillips head screw cap 44 protrudes only slightly from the surface of the fastened object, firstly for aesthetic reasons, and secondly to prevent interference with subsequent installation operations.

[0042] Combination Figure 8 This embodiment of a detachable nail assembly describes the state of the detachable nail assembly during disassembly. After the nail head 1 is injected into the mounting base, it forms a squeezing and biting force with the mounting base and is in a static state. When the nail body 4 rotates in the opposite direction, it simultaneously drives the pull head 2 to move forward along the nail shank thread 42, forcing the nail body 4 to disengage from the pull head 2. At the same time, the front end connecting part 41 of the nail body disengages from the inner cavity connecting part 13 of the nail head, thus realizing the detachable function of the detachable nail assembly. This solves the problem that traditional nail disassembly requires cutting the nail head for destructive disassembly, which can easily damage the fastened object.

[0043] Combination Figure 9 In this embodiment, a detachable nail assembly is provided: the front end connecting part 41 of the nail body is set as the front end threaded connecting part 48 of the nail body, and the front end connecting part 41 of the nail body is replaced; the inner cavity connecting part 13 of the nail head is set as the inner cavity threaded connecting part 14 of the nail head, and the inner cavity connecting part 13 of the nail head is replaced; the nail body set as the front end threaded connecting part and the nail head set as the inner cavity threaded connecting part are connected together by a threaded connection, which is suitable for situations where the nail head may fall off after the detachable nail assembly penetrates the steel plate during steel structure pipeline connection or emergency ship repair.

[0044] Figure 10 yes Figure 9A local enlarged view of the middle A position of the detachable shot pin assembly of the embodiment: a local enlarged view of the threaded connection of the pin body provided as the threaded connection part at the front end of the pin body and the pin head provided as the threaded connection part in the inner cavity of the pin head.

[0045] Further, the detachable shot pin assembly of the embodiment: the pin head includes an integral molding or welding with the pin body, which is suitable for steel structure pipeline connection or ship emergency repair, and can prevent the pin head from falling off after the detachable shot pin assembly penetrates the steel plate.

[0046] Further: the cross head screw cap of the detachable shot pin assembly protrudes little from the surface of the fastened object after the fastening of the object is completed, which is beautiful and aesthetic, and secondly, in some limited use scenarios, the little protrusion can prevent interference with subsequent installation operations.

[0047] Further: the detachable shot pin assembly does not need to use an electric hammer to punch a hole in advance when used, does not need to use manual installation, has an expandable structure, can be quickly disassembled, and can replace some traditional plastic expansion plugs, small-specification expansion screws, traditional expansion nails, and other traditional products with mechanical fastening structure technology.

[0048] Further, the detachable shot pin assembly of the embodiment: the front end of the expansion groove is provided with a market conventional shot pin accessory, which is a circular fastening sheet, a square fastening sheet, a U-shaped pipe clamp accessory, or a positioning sealing gasket, and is applied to fixing fire-fighting equipment, fixing steel structure pipelines, ship emergency repair, building door and window installation, fixing wooden keel, fixing light steel keel, suspended ceiling, hanging pictures, installing lamps, fixing inorganic pre-coated plate wall plate dry hanging keel framework, fixing mineral wool sound-absorbing plate suspended ceiling framework and wall plate dry hanging keel framework, installing curtains, installing monitoring, etc., and has a wide application range.

[0049] Further: the material for manufacturing the shot pin assembly includes but is not limited to metal materials, such as carbon steel, stainless steel, alloy steel, high-strength corrosion-resistant composite materials, etc., and is applied to a corrosion-prone environment.

[0050] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them, and for those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently, and all these modifications and replacements belong to the protection scope of the claims of the present application.

Claims

1. A detachable nail assembly comprising a nail head (1), a puller head (2), an expansion sleeve (3), a nail shank (4), characterized in that: The front end of the shank thread (42) provided on the shank is sleeved with a pull-out head, the expansion sleeve is sleeved on the pull-out head and a suitable position of the shank, the corresponding positions of the expansion sleeve and the pull-out head are in close contact, the corresponding positions of the expansion sleeve and the shank are in close contact and can rotate relative to each other, the shank is integrally rotated and inserted into the connecting part (13) of the inner cavity of the nail head, when the shank rotates in the forward and reverse directions, the pull-out head is driven to displace forward and backward along the shank thread, the displacement generates two effects, one is to force the expansion groove (31) provided at the front end of the expansion sleeve to expand, and the other is to realize the rotation of the shank thread in the reverse direction and exit, the detachable nail shooting assembly is powered by the nail shooter.

2. The detachable nail firing assembly of claim 1, wherein: The nail head comprises a nail tip (11), a residual shank (12) and a connecting part (13) of the inner cavity of the nail head, the nail tip is provided in the shape of a sharp sub-bullet, which is beneficial to shooting into the installation base layer, the highest point of the outer diameter of the residual shank matches the outer diameters of the pull-out head and the expansion sleeve, so as to avoid the situation that the pull-out head and the expansion sleeve are blocked when the nail shooting assembly is shot into the installation base layer, the connecting part (13) of the inner cavity of the nail head accommodates the front end connecting part (41) of the shank, the shank is integrally rotated and inserted into the connecting part of the inner cavity of the nail head, and the nail head is in a static state after being shot into the installation base layer and forming extrusion engagement with the installation base layer.

3. The detachable nail firing assembly of claim 1, wherein: The pull-out head comprises an inner thread (21) of the pull-out head and a conical outer cylinder (22), the pull-out head is sleeved on the front end of the shank thread (42), and the inner thread of the pull-out head is spirally connected with the shank thread.

4. The detachable nail firing assembly of claim 1, wherein: The expansion sleeve comprises a plurality of expansion grooves (31), the front end of the expansion sleeve is sleeved on a suitable position of the pull-out head (2), and the rear end is in close contact with the cross head screw cap (44), when the pull-out head is displaced backward along the shank thread, the expansion groove provided on the expansion sleeve is forced to expand and forms extrusion engagement with the installation base layer, and when the detachable nail shooting assembly is shot into the installation base layer, the cross head screw cap is used to push the expansion sleeve into the installation base layer.

5. The detachable nail firing assembly of claim 1, wherein: The shank comprises a front end connecting part (41), a shank thread (42), a shank rod (43) and a cross head screw cap (44), the outer diameter of the cross head screw cap is larger than the outer diameter of the expansion sleeve, the shank is integrally made or welded, the front end connecting part (41) of the shank is inserted into the connecting part (13) of the inner cavity of the nail head, and the shank is integrally rotated and inserted into the connecting part of the inner cavity of the nail head.

6. The detachable nail firing assembly of claim 5, wherein: The shank thread (42) and the shank rod (43) provided on the shank comprise all shank threads (42) which can be set in the state of the shank thread (42) and the shank rod part is removed, so as to be suitable for smaller specifications of the detachable nail shooting assembly.

7. The detachable nail firing assembly of claim 5, wherein: The cross head screw cap (44) provided on the shank comprises a hexagonal flange surface screw cap (45) which can be set in the state of the hexagonal flange surface screw cap (45) and is replaced by the cross head screw cap, and can also be set in the state of a disc head screw cap, a cross groove screw cap, an inner hexagonal screw cap or a hexagonal nut with a gasket, the shank provided in other screw cap states is integrally rotated and inserted into the connecting part (13) of the inner cavity of the nail head.

8. The detachable nail firing assembly of claim 5, wherein: The cross head screw cap (44) provided on the shank includes a shank rear end threaded connection part (46) which can be replaced by the cross head screw cap, the shank provided in the shank rear end threaded connection part (46) is integrally inserted and connected to the shank inner cavity connection part (13), the outer diameter of the shank rear end threaded connection part is larger than the outer diameter of the expansion sleeve, the shank provided in the shank rear end threaded connection part is integrally formed or integrally welded, and the shank rear end threaded connection part (46) is provided with a cross slot screw groove (47) or a radial hole.

9. The detachable nail firing assembly of claim 1, wherein: The tail of the detachable shooting nail assembly includes a plastic shell shooting nail bullet (5) which can be installed, so as to be suitable for the conventional press type shooting nail device in the market.

10. The detachable nail firing assembly of claim 1, wherein: The shank front end connection part (41) can be replaced by a shank front end threaded connection part (48), and the shank inner cavity connection part (13) is replaced by a shank inner cavity threaded connection part (14), the shank provided in the shank front end threaded connection part is connected to the shank provided in the shank inner cavity threaded connection part in a threaded connection manner, and is applied to the connection of steel structure pipelines or emergency repair of ships, and the detachable shooting nail assembly can be used in the case that the shank head is separated after penetrating the steel plate.

11. The detachable nail firing assembly of claim 1, wherein: The shank (4) and the shank head (1) are integrally formed or integrally welded, and are also applied to the connection of steel structure pipelines or emergency repair of ships, and the detachable shooting nail assembly can be used in the case that the shank head is separated after penetrating the steel plate.

12. The detachable firing assembly of any one of Claims 1, 8, or 9, wherein: The expansion sleeve front end outer sleeve of the detachable shooting nail assembly is provided with a round fastening sheet, a square fastening sheet, a U-shaped pipe clamp accessory or a positioning sealing gasket which are conventional shooting nail accessories in the market.

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