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WO2012167679A1 - Invisible pressure expansion screw - Google Patents

Invisible pressure expansion screw Download PDF

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Publication number
WO2012167679A1
WO2012167679A1 PCT/CN2012/075139 CN2012075139W WO2012167679A1 WO 2012167679 A1 WO2012167679 A1 WO 2012167679A1 CN 2012075139 W CN2012075139 W CN 2012075139W WO 2012167679 A1 WO2012167679 A1 WO 2012167679A1
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WO
WIPO (PCT)
Prior art keywords
main body
body bolt
invisible
pressing
screw
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PCT/CN2012/075139
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French (fr)
Chinese (zh)
Inventor
温少松
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Individual
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Individual
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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
    • F16B13/066—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 a separate expander-part, actuated by the screw, nail or the like

Definitions

  • the invention relates to a fastening screw, in particular to a blasting fastening screw with an invisible pressing spring.
  • the blasting screw of the invention is suitable for installing a road bridge, a guardrail, a road column, a communication, a fire, a stadium seat, and a matching
  • the fastening works of electric facilities and steel frame structures are especially suitable for the installation of fastening thicker workpieces.
  • the prior art squeezing screw includes a screw, a nut, an expansion tube, a spring meson, and a flat pad.
  • the shape and structure of the blasting screw are as shown in FIG. 1 , the installation of the blasting screw is cumbersome, the pressing function is not strong enough, and the main screw cannot be repeated. After the use, whether after installation or after disassembly, the main screw will reveal a long screw head. If it is used to fix the traffic facilities such as the deceleration rubber board on the road surface, it will often pierce the car tires, causing the pedestrians to fall. Security risks.
  • the utility model patent of the Japanese Patent No. 201020575763.6 discloses a compacting shaft core type blasting screw.
  • the blasting screw sleeves a compression spring between the flat pad and the expansion tube, and its shape structure is as shown in FIG. 2 .
  • the squeezing screw of Fig. 2 has the pressing function, the main body screw can be used twice, but if it is used for fixing the hanging workpiece, it is easy to cause the pressing spring to catch the workpiece, if it is used for fixing the thickness After the disassembly, the expansion sleeve will still be exposed, and the flat environment will not be formed. As a result, the automobile tires which are often punctured as shown in Fig. 1 may cause the safety of the pedestrians falling down.
  • the technical problem to be solved by the present invention is to provide a squeezing screw which can hide the pressing spring in use state, can recirculate the main body bolt, and maintain a flat environment after disassembly.
  • An invisible pressing and squeezing screw comprises: a main body bolt, an expansion tube sleeved on the main body bolt; and a truncated cone-shaped expansion head spirally engaged with the external thread of the lower end of the main body bolt, and further comprises a movable sleeve with the main body bolt
  • An upper sleeve and a compression spring the upper sleeve is located at an upper portion of the expansion tube, the compression spring is disposed between the upper sleeve and the expansion tube, the main body bolt, the upper sleeve, and the compression
  • the spring, the expansion tube and the truncated expansion head are detachably connected together.
  • the pressing spring is located at any position between the upper sleeve and the expansion tube, since the upper sleeve is provided, it is ensured that the squeezing screw is in the installation state, and the pressing spring is not exposed to avoid jamming the workpiece. Since the main body bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head are detachably connected together, the blasting screw of the present invention only expands the compression spring, the expansion tube and the truncated cone after being disassembled. The head remains in the mounting hole, and the other main body bolts and upper casing can be taken out from the mounting hole, so that the flat environment can be maintained after disassembly, and the main body bolt can be repeatedly used twice.
  • the screw of the main body bolt has a stepped shape with a larger upper diameter and a smaller lower diameter, and the lower rod has an external thread that can be screwed with the internal thread of the truncated cone.
  • the stepped screw ensures that the upper end of the truncated-shaped expansion head can smoothly enter the expansion tube at the beginning of installation.
  • a stepped screw There are two ways to form a stepped screw, and the first is that the main body bolt is an integrally formed structure. Another formation solution is: sleeve an inner sleeve on the upper portion of the screw having a uniform diameter; the flat washer, the upper sleeve, the compression spring and the partial expansion tube are then sleeved over the inner sleeve.
  • a flat gasket is disposed between the main body bolt nut and the upper sleeve.
  • the main body bolt and the flat washer are integrally formed or the flat washer is sleeved on the main body bolt as a separate component.
  • the nut of the main body bolt has a hexagonal shape and a square shape. Round or spherical, with hexagonal grooves or cross recesses on the top, both in length and size.
  • the diameter of the expansion tube is larger than the outer diameter of the upper end of the truncated-shaped expansion head, but smaller than the outer diameter of the lower end of the truncated-shaped expansion head, and the middle and lower portions of the wall of the expansion tube have a plurality of radial slits.
  • the outer wall surface of the truncated cone expansion head is provided with a non-slip groove.
  • the squeezing screw of the present invention has the following beneficial technical effects: the pressing spring is hidden in the mounting hole, so that the workpiece is not caught in the case of having a strong pressing function.
  • the utility model is suitable for fastening installation of thick workpieces because of the structure of the main bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head. After disassembly, the main body bolt can be recycled and keep the installation site flat and green.
  • FIG. 1 is a schematic structural view of a squib in the prior art
  • Figure 2 is a schematic view showing the structure of another conventional squeezing screw which has recently appeared;
  • Figure 3 is a schematic view showing the overall structure of the first embodiment of the invisible pressing and squeezing screw of the present invention
  • Figure 4 is a plan view showing a first embodiment of the invisible pressing and squeezing screw of the present invention.
  • Fig. 5 is a schematic exploded view showing the invisible pressing and squeezing screw in the first embodiment of the present invention.
  • Figure 6 is a schematic view showing the overall structure of the second embodiment of the invisible pressing and squeezing screw of the present invention.
  • Figure 7 is a plan view showing a second embodiment of the invisible pressing and squeezing screw of the present invention.
  • Figure 8 is a schematic exploded view showing the invisible pressing and squeezing screw of the second embodiment of the present invention.
  • the invisible pressing and squeezing screw of the present invention comprises: a main body bolt 1, an upper sleeve 4 which is sleeved on the main body bolt 1 in order from top to bottom, and is pressed.
  • the compression spring 5 is located between the upper sleeve 4 and the expansion tube 2, and the compression spring 5 can be located anywhere between the upper sleeve and the expansion tube. Therefore, it is ensured that the pressing spring 5 in the use state is hidden in the mounting hole without catching the workpiece.
  • the main body bolt 1 , the upper sleeve 4 , the pressing spring 5 , the expansion tube 2 , and the truncated cone-shaped expansion head 3 are independent components, and the main body bolt 1 and the flat washer 7 are
  • the one-piece or flat pad 7 is a separate component that is sleeved on the body bolt 1 and that is removably attached to invisibly press the blast screw.
  • the removable structure makes the apparatus of the present invention particularly suitable for fastening installations of thicker workpieces, and the body bolts can be recycled and maintained in a flat environment after disassembly.
  • the diameter of the expansion tube 2 is larger than the outer diameter of the upper end of the truncated-shaped expansion head 3, but smaller than the outer diameter of the lower end of the truncated-shaped expansion head 3, and the middle and lower portions of the wall of the expansion tube 2 have a plurality of radial slits. .
  • the outer wall surface of the truncated cone-shaped expansion head 3 is provided with a non-slip groove.
  • the screw of the main body bolt 1 has a stepped shape with a larger upper diameter and a smaller lower diameter, and the lower rod has an external thread that can be screwed with the internal thread of the truncated cone-shaped expansion head 3.
  • Embodiment 1 The main body bolt 1 is an integrally formed structure, and the upper sleeve 4, the pressing spring 5, and the expansion tube 2 are sequentially sleeved on the upper part of the screw with a larger diameter of the main body bolt 1 and the expansion head 3 of the truncated cone shape
  • the internal thread is screwed with the external thread of the screw having a smaller diameter at the lower portion of the main body bolt 1, as shown in FIG.
  • the structure of the first embodiment is suitable for the case where the diameter of the screw of the main body bolt 1 is small, and the apparatus for processing the main body bolt 1 having the stepped screw at this time is not particularly required.
  • Embodiment 2 The stepped screw having a larger diameter and a lower diameter of the upper portion of the main body bolt 1 is formed by arranging an inner sleeve 6 on the upper portion of the screw having a uniform diameter, and the inner sleeve 6 is equal to the main body bolt 1
  • the diameter of the upper screw; the upper sleeve 4, the compression spring 5 and the partial expansion tube 2 are then overlaid onto the inner sleeve 6, the internal thread of the truncated cone-shaped expansion head 3 and the lower part of the main body bolt 1
  • the external thread is screwed together as shown in Figure 8.
  • the structure of the second embodiment is suitable for the case where the diameter of the screw of the main body bolt 1 is large.
  • the second embodiment uses an inner sleeve 6 to form a stepped screw.
  • a flat gasket 7 is disposed between the main bolt 1 and the upper sleeve 4, and the main bolt 1 and the flat gasket 7 may be integrally formed (see FIGS. 3 and 5). It is also possible that a separate component is sleeved on the body bolt 1 (Figs. 6 and 8).
  • the nut of the main body bolt 1 has a hexagonal shape or a square shape. Or the nut of the main body bolt 1 has a circular or spherical shape, and has a hexagonal groove or a cross recess at the top (see FIGS. 4 and 7).
  • the invention provides a blasting screw, and the pressing spring is hidden in the mounting hole, so as to ensure that the workpiece is not caught when the powerful pressing function is provided.
  • the utility model is suitable for fastening installation of thick workpieces because of the structure of the main bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head. After disassembly, the main body bolt can be recycled and can keep the installation site flat, green and environmentally friendly.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

An invisible pressure expansion screw comprising a main body bolt (1), a sleeve (4), an actuating spring (5), and an expansion pipe (2) successively sleeved on the main body bolt (1), and a round expansion head (3) spirally matched with external screw threads at the lower end part of the main body bolt (1); the actuating spring (5) being located between the upper sleeve (4) and the expansion pipe (2); and the main body bolt (1), the upper sleeve (4), the actuating spring (5), the expansion pipe (2) and the round expansion head (3) being removably connected together. The actuating spring is concealed in a mounting hole by the invisible pressure expansion screw, and work-pieces will not jam; the screw is particularly suitable for the mounting process of fastening thicker work-pieces; and, after the invisible pressure expansion screw is removed, the main body bolt thereof can be recycled, the mounting field can be kept flush, and the screw is environmentally friendly.

Description

隐形紧压拉爆螺丝  Invisible compression screw

技术领域Technical field

本发明涉及一种紧固螺丝，尤其涉及一种具有隐形紧压弹簧的拉爆紧固螺丝，本发明的拉爆螺丝适用于安装路桥、护栏、路柱、通讯、消防、场馆座椅、配电设施、钢架结构等紧固工程，特别适用于紧固较厚工件的安装工程。The invention relates to a fastening screw, in particular to a blasting fastening screw with an invisible pressing spring. The blasting screw of the invention is suitable for installing a road bridge, a guardrail, a road column, a communication, a fire, a stadium seat, and a matching The fastening works of electric facilities and steel frame structures are especially suitable for the installation of fastening thicker workpieces.

背景技术Background technique

现有技术的拉爆螺丝包括螺杆、螺母、膨胀管、弹簧介子、平垫，其形状结构如图1所示，该种拉爆螺丝安装繁琐，压紧功能不够强，而且主体螺丝不能重复二次使用，无论是安装后或拆卸后，其主体螺丝都会露出长长的螺杆头，如果用于固定路面上的减速胶板等交通设施，则经常会发生刺破汽车轮胎，令路上行人跌倒等安全隐患。专利号为201020575763.6的中国实用新型专利公开一种紧压轴芯式拉爆螺丝，该拉爆螺丝在平垫与膨胀管之间套接一压缩弹簧，其形状结构如图2所示。图2的拉爆螺丝虽然具备了压紧功能，主体螺丝也可二次使用，但如果用于固定悬挂式工件，则很容易出现压紧弹簧卡住工件的情况，如果用于固定厚度较大的工件，拆卸后仍然会露出膨胀套管，不能形成平整的环境，从而发生如图1拉爆螺丝经常出现的刺破汽车轮胎，令路上行人跌倒等安全隐患。The prior art squeezing screw includes a screw, a nut, an expansion tube, a spring meson, and a flat pad. The shape and structure of the blasting screw are as shown in FIG. 1 , the installation of the blasting screw is cumbersome, the pressing function is not strong enough, and the main screw cannot be repeated. After the use, whether after installation or after disassembly, the main screw will reveal a long screw head. If it is used to fix the traffic facilities such as the deceleration rubber board on the road surface, it will often pierce the car tires, causing the pedestrians to fall. Security risks. The utility model patent of the Japanese Patent No. 201020575763.6 discloses a compacting shaft core type blasting screw. The blasting screw sleeves a compression spring between the flat pad and the expansion tube, and its shape structure is as shown in FIG. 2 . Although the squeezing screw of Fig. 2 has the pressing function, the main body screw can be used twice, but if it is used for fixing the hanging workpiece, it is easy to cause the pressing spring to catch the workpiece, if it is used for fixing the thickness After the disassembly, the expansion sleeve will still be exposed, and the flat environment will not be formed. As a result, the automobile tires which are often punctured as shown in Fig. 1 may cause the safety of the pedestrians falling down.

发明内容Summary of the invention

本发明要解决的技术问题是提供一种在使用状态能隐藏紧压弹簧，主体螺栓能循环使用，拆卸后保持平整环境的拉爆螺丝。The technical problem to be solved by the present invention is to provide a squeezing screw which can hide the pressing spring in use state, can recirculate the main body bolt, and maintain a flat environment after disassembly.

本发明解决上述技术问题所采用的技术方案是：The technical solution adopted by the present invention to solve the above technical problems is:

一种隐形紧压拉爆螺丝，包括：主体螺栓、套接在主体螺栓上的膨胀管以及与所述主体螺栓下端部外螺纹螺旋配合的圆台形膨胀头，还包括与所述主体螺栓活动套接的上套管和压紧弹簧，所述上套管位于所述膨胀管的上部，所述压紧弹簧置于上套管和膨胀管之间，所述主体螺栓、上套管、压紧弹簧、膨胀管和圆台形膨胀头可拆装的连接在一起。由于压紧弹簧位于上套管和膨胀管之间的任何位置，由于设置了上套管，因此能保证拉爆螺丝在安装使用状态，其压紧弹簧不外露以免造成卡住工件的情况。由于所述主体螺栓、上套管、压紧弹簧、膨胀管和圆台形膨胀头可拆装的连接在一起，因此本发明的拉爆螺丝拆卸后仅把压紧弹簧、膨胀管和圆台形膨胀头遗留在安装孔内，其余的主体螺栓、上套管均能从安装孔取出，因此拆卸后能保持平整的环境，而且主体螺栓可重复二次使用。An invisible pressing and squeezing screw comprises: a main body bolt, an expansion tube sleeved on the main body bolt; and a truncated cone-shaped expansion head spirally engaged with the external thread of the lower end of the main body bolt, and further comprises a movable sleeve with the main body bolt An upper sleeve and a compression spring, the upper sleeve is located at an upper portion of the expansion tube, the compression spring is disposed between the upper sleeve and the expansion tube, the main body bolt, the upper sleeve, and the compression The spring, the expansion tube and the truncated expansion head are detachably connected together. Since the pressing spring is located at any position between the upper sleeve and the expansion tube, since the upper sleeve is provided, it is ensured that the squeezing screw is in the installation state, and the pressing spring is not exposed to avoid jamming the workpiece. Since the main body bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head are detachably connected together, the blasting screw of the present invention only expands the compression spring, the expansion tube and the truncated cone after being disassembled. The head remains in the mounting hole, and the other main body bolts and upper casing can be taken out from the mounting hole, so that the flat environment can be maintained after disassembly, and the main body bolt can be repeatedly used twice.

所述主体螺栓的螺杆呈上部直径较大、下部直径较小的阶梯状，下部杆体具有可与所述圆台形膨胀头内螺纹螺旋配合的外螺纹。阶梯状的螺杆能保证圆台形膨胀头的上端部在开始安装时能够顺利进入膨胀管内。The screw of the main body bolt has a stepped shape with a larger upper diameter and a smaller lower diameter, and the lower rod has an external thread that can be screwed with the internal thread of the truncated cone. The stepped screw ensures that the upper end of the truncated-shaped expansion head can smoothly enter the expansion tube at the beginning of installation.

有两种方案形成阶梯状螺杆，一是所述主体螺栓为一体成型结构。另一形成方案是：在直径均匀的螺杆上部套接一内套管；所述平垫、上套管、压紧弹簧以及部分膨胀管再套接到所述内套管之上。There are two ways to form a stepped screw, and the first is that the main body bolt is an integrally formed structure. Another formation solution is: sleeve an inner sleeve on the upper portion of the screw having a uniform diameter; the flat washer, the upper sleeve, the compression spring and the partial expansion tube are then sleeved over the inner sleeve.

在所述主体螺栓螺帽与上套管之间设置有平垫片。所述主体螺栓与平垫片为一体成型或平垫片为独立部件套接在所述主体螺栓上。A flat gasket is disposed between the main body bolt nut and the upper sleeve. The main body bolt and the flat washer are integrally formed or the flat washer is sleeved on the main body bolt as a separate component.

所述主体螺栓的螺帽的外形为六角形、四方形。圆形或球形，其顶部具有内六角形凹槽或十字凹槽，尺寸长短大小均可。The nut of the main body bolt has a hexagonal shape and a square shape. Round or spherical, with hexagonal grooves or cross recesses on the top, both in length and size.

所述膨胀管的直径大于所述圆台形膨胀头上端的外经，但小于所述圆台形膨胀头下端的外经，所述膨胀管管壁的中下部有多条径向切口。The diameter of the expansion tube is larger than the outer diameter of the upper end of the truncated-shaped expansion head, but smaller than the outer diameter of the lower end of the truncated-shaped expansion head, and the middle and lower portions of the wall of the expansion tube have a plurality of radial slits.

所述圆台形膨胀头的外壁面设置有防滑凹槽。The outer wall surface of the truncated cone expansion head is provided with a non-slip groove.

同现有技术相比较，本发明的拉爆螺丝具有如下有益技术效果：压紧弹簧隐藏在安装孔内，从而在具备强大压紧功能的情况下，保证不会卡住工件。由于采用主体螺栓、上套管、压紧弹簧、膨胀管和圆台形膨胀头可拆装连接的结构，因此特别适用于紧固较厚工件的安装工程。拆卸后，主体螺栓能够循环使用且能保持安装场地的平整，绿色环保。Compared with the prior art, the squeezing screw of the present invention has the following beneficial technical effects: the pressing spring is hidden in the mounting hole, so that the workpiece is not caught in the case of having a strong pressing function. The utility model is suitable for fastening installation of thick workpieces because of the structure of the main bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head. After disassembly, the main body bolt can be recycled and keep the installation site flat and green.

附图说明DRAWINGS

图1是现有技术中的拉爆螺丝的结构示意图；1 is a schematic structural view of a squib in the prior art;

图2是最近出现的另一种现有拉爆螺丝的结构示意图；Figure 2 is a schematic view showing the structure of another conventional squeezing screw which has recently appeared;

图3是本发明隐形紧压拉爆螺丝实施例一的整体结构示意图；Figure 3 is a schematic view showing the overall structure of the first embodiment of the invisible pressing and squeezing screw of the present invention;

图4是本发明隐形紧压拉爆螺丝实施例一的俯视图；Figure 4 is a plan view showing a first embodiment of the invisible pressing and squeezing screw of the present invention;

图5是本发明实施例一中隐形紧压拉爆螺丝的分解结构示意图。Fig. 5 is a schematic exploded view showing the invisible pressing and squeezing screw in the first embodiment of the present invention.

图6是本发明隐形紧压拉爆螺丝实施例二的整体结构示意图；Figure 6 is a schematic view showing the overall structure of the second embodiment of the invisible pressing and squeezing screw of the present invention;

图7是本发明隐形紧压拉爆螺丝实施例二的俯视图；Figure 7 is a plan view showing a second embodiment of the invisible pressing and squeezing screw of the present invention;

图8是本发明实施例二中隐形紧压拉爆螺丝的分解结构示意图。Figure 8 is a schematic exploded view showing the invisible pressing and squeezing screw of the second embodiment of the present invention.

具体实施方式detailed description

为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明做进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

请参考图3、图5、图6和图8，本发明的隐形紧压拉爆螺丝，包括：主体螺栓1、从上至下依次套接在主体螺栓1上的上套管4、压紧弹簧5和膨胀管2，以及与所述主体螺栓1下端部外螺纹螺旋配合的圆台形膨胀头3。如图3所示，所述压紧弹簧5位于上套管4和膨胀管2之间，所述压紧弹簧5可以位于上套管和膨胀管之间的任何位置。因此能保证使用状态的压紧弹簧5被隐藏在安装孔内而不会卡住工件。Referring to FIG. 3, FIG. 5, FIG. 6 and FIG. 8, the invisible pressing and squeezing screw of the present invention comprises: a main body bolt 1, an upper sleeve 4 which is sleeved on the main body bolt 1 in order from top to bottom, and is pressed. The spring 5 and the expansion tube 2, and a truncated cone-shaped expansion head 3 spirally engaged with the external thread of the lower end of the main body bolt 1. As shown in Fig. 3, the compression spring 5 is located between the upper sleeve 4 and the expansion tube 2, and the compression spring 5 can be located anywhere between the upper sleeve and the expansion tube. Therefore, it is ensured that the pressing spring 5 in the use state is hidden in the mounting hole without catching the workpiece.

如图5和图8所示，所述主体螺栓1、上套管4、压紧弹簧5、膨胀管2和圆台形膨胀头3均为独立零部件，所述主体螺栓1与平垫7为一体成型或平垫7为独立部件套接在所述主体螺栓1上，它们可拆装的连接成隐形紧压拉爆螺丝。该可拆装的结构使得本发明装置特别适用于紧固较厚工件的安装工程，而且拆卸后主体螺栓能够循环使用并保持平整的环境。As shown in FIG. 5 and FIG. 8 , the main body bolt 1 , the upper sleeve 4 , the pressing spring 5 , the expansion tube 2 , and the truncated cone-shaped expansion head 3 are independent components, and the main body bolt 1 and the flat washer 7 are The one-piece or flat pad 7 is a separate component that is sleeved on the body bolt 1 and that is removably attached to invisibly press the blast screw. The removable structure makes the apparatus of the present invention particularly suitable for fastening installations of thicker workpieces, and the body bolts can be recycled and maintained in a flat environment after disassembly.

所述膨胀管2的直径大于所述圆台形膨胀头3上端的外经，但小于所述圆台形膨胀头3下端的外经，所述膨胀管2管壁的中下部有多条径向切口。所述圆台形膨胀头3的外壁面设置有防滑凹槽。The diameter of the expansion tube 2 is larger than the outer diameter of the upper end of the truncated-shaped expansion head 3, but smaller than the outer diameter of the lower end of the truncated-shaped expansion head 3, and the middle and lower portions of the wall of the expansion tube 2 have a plurality of radial slits. . The outer wall surface of the truncated cone-shaped expansion head 3 is provided with a non-slip groove.

所述主体螺栓1的螺杆呈上部直径较大、下部直径较小的阶梯状，下部杆体具有可与所述圆台形膨胀头3内螺纹螺旋配合的外螺纹。有如下两种实施方式形成阶梯状螺杆：The screw of the main body bolt 1 has a stepped shape with a larger upper diameter and a smaller lower diameter, and the lower rod has an external thread that can be screwed with the internal thread of the truncated cone-shaped expansion head 3. There are two embodiments to form a stepped screw:

实施例一：所述主体螺栓1为一体成型结构，所述上套管4、压紧弹簧5、膨胀管2依次套接到主体螺栓1直径较大的的螺杆上部，圆台形膨胀头3的内螺纹与主体螺栓1下部直径较小的螺杆的外螺纹螺旋配合，如图5所示。实施例一的结构适合主体螺栓1的螺杆直径较小的情况，此时加工具有阶梯状螺杆的主体螺栓1的设备无需特别要求。Embodiment 1: The main body bolt 1 is an integrally formed structure, and the upper sleeve 4, the pressing spring 5, and the expansion tube 2 are sequentially sleeved on the upper part of the screw with a larger diameter of the main body bolt 1 and the expansion head 3 of the truncated cone shape The internal thread is screwed with the external thread of the screw having a smaller diameter at the lower portion of the main body bolt 1, as shown in FIG. The structure of the first embodiment is suitable for the case where the diameter of the screw of the main body bolt 1 is small, and the apparatus for processing the main body bolt 1 having the stepped screw at this time is not particularly required.

实施例二：所述主体螺栓1上部直径较大、下部直径较小的阶梯状螺杆是这样形成的，在直径均匀的螺杆上部套接一内套管6，该内套管6等于增加主体螺栓1上部螺杆的直径；所述上套管4、压紧弹簧5以及部分膨胀管2再套接到所述内套管6之上，所述圆台形膨胀头3的内螺纹与主体螺栓1下部外螺纹螺旋配合，如图8所示。实施例二的结构适合主体螺栓1的螺杆直径较大的情况，如果主体螺栓1的螺杆直径较大时，直接加工具有阶梯状螺杆的主体螺栓1需要较大型的设备，为节省设备投资，同时也节约能源，本实施例二使用一内套管6来形成阶梯状螺杆。Embodiment 2: The stepped screw having a larger diameter and a lower diameter of the upper portion of the main body bolt 1 is formed by arranging an inner sleeve 6 on the upper portion of the screw having a uniform diameter, and the inner sleeve 6 is equal to the main body bolt 1 The diameter of the upper screw; the upper sleeve 4, the compression spring 5 and the partial expansion tube 2 are then overlaid onto the inner sleeve 6, the internal thread of the truncated cone-shaped expansion head 3 and the lower part of the main body bolt 1 The external thread is screwed together as shown in Figure 8. The structure of the second embodiment is suitable for the case where the diameter of the screw of the main body bolt 1 is large. If the screw diameter of the main body bolt 1 is large, the main body bolt 1 having the stepped screw is directly required to have a larger type of equipment, in order to save equipment investment, Also saving energy, the second embodiment uses an inner sleeve 6 to form a stepped screw.

在所述主体螺栓1螺帽与上套管4之间设置有平垫片7，所述主体螺栓1与平垫片7可以是一体成型（见图3和图5），所述平垫片7也可以是独立部件套接在所述主体螺栓1上（图6和图8）。A flat gasket 7 is disposed between the main bolt 1 and the upper sleeve 4, and the main bolt 1 and the flat gasket 7 may be integrally formed (see FIGS. 3 and 5). It is also possible that a separate component is sleeved on the body bolt 1 (Figs. 6 and 8).

所述主体螺栓1的螺帽的外形为六角形或四方形。或所述主体螺栓1的螺帽的外形为圆形或球形，其顶部具有内六角形凹槽或十字凹槽（见图4和图7）。The nut of the main body bolt 1 has a hexagonal shape or a square shape. Or the nut of the main body bolt 1 has a circular or spherical shape, and has a hexagonal groove or a cross recess at the top (see FIGS. 4 and 7).

以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

工业实用性Industrial applicability

本发明提供一种拉爆螺丝，压紧弹簧隐藏在安装孔内，从而在具备强大压紧功能的情况下，保证不会卡住工件。由于采用主体螺栓、上套管、压紧弹簧、膨胀管和圆台形膨胀头可拆装连接的结构，因此特别适用于紧固较厚工件的安装工程。拆卸后，主体螺栓能够循环使用且能保持安装场地的平整，绿色环保，具有工业实用性。The invention provides a blasting screw, and the pressing spring is hidden in the mounting hole, so as to ensure that the workpiece is not caught when the powerful pressing function is provided. The utility model is suitable for fastening installation of thick workpieces because of the structure of the main bolt, the upper sleeve, the compression spring, the expansion tube and the truncated cone expansion head. After disassembly, the main body bolt can be recycled and can keep the installation site flat, green and environmentally friendly.

Claims (1)

权利要求书Claim 1、一种隐形紧压拉爆螺丝，包括：主体螺栓（1）、套接在主体螺栓（1）上的膨胀管（2）以及与所述主体螺栓（1）下端部外螺纹螺旋配合的圆台形膨胀头（3），其特征在于还包括：1. An invisible pressing and squeezing screw, comprising: a main body bolt (1), an expansion tube (2) sleeved on the main body bolt (1), and a spiral fit with the external thread of the lower end of the main body bolt (1) A truncated-shaped expansion head (3), characterized in that it further comprises: 与所述主体螺栓（1）活动套接的上套管（4）和压紧弹簧（5），所述上套管（4）位于所述压紧弹簧（5）的上部，所述压紧弹簧（5）置于上套管（4）和膨胀管（2）之间，所述主体螺栓（1）、上套管（4）、压紧弹簧（5）、膨胀管（2）和圆台形膨胀头（3）可拆装的连接在一起。An upper sleeve (4) and a pressing spring (5) slidably engaged with the main body bolt (1), the upper sleeve (4) being located at an upper portion of the pressing spring (5), the pressing A spring (5) is placed between the upper casing (4) and the expansion pipe (2), the main body bolt (1), the upper casing (4), the compression spring (5), the expansion pipe (2) and the circle The table-shaped expansion heads (3) are detachably connected together. 2、根据权利要求1所述的隐形紧压拉爆螺丝，其特征在于: 所述主体螺栓（1）的螺杆呈上部直径较大、下部直径较小的阶梯状，下部杆体具有可与所述圆台形膨胀头（3）内螺纹螺旋配合的外螺纹。2. The invisible squeeze plunger according to claim 1, wherein: The screw of the main body bolt (1) has a stepped shape with a larger upper diameter and a smaller lower diameter, and the lower rod has an external thread that can be screwed with the internal thread of the truncated cone-shaped expansion head (3). 3、根据权利要求2所述的隐形紧压拉爆螺丝，其特征在于: 所述主体螺栓（1）为一体成型结构。The invisible pressing and squeezing screw according to claim 2, wherein the main body bolt (1) is an integrally formed structure. 4、根据权利要求2所述的隐形紧压拉爆螺丝，其特征在于: 所述主体螺栓（1）上部直径较大、下部直径较小的阶梯状螺杆是这样形成的，在直径均匀的螺杆上部套接一内套管（6）；所述上套管（4）、压紧弹簧（5）以及部分膨胀管（2）再套接到所述内套管（6）之上。4. The invisible pressing and squeezing screw according to claim 2, wherein: The stepped screw having a larger diameter of the upper portion of the main body bolt (1) and a smaller diameter of the lower portion is formed by arranging an inner sleeve (6) on the upper portion of the screw having a uniform diameter; the upper sleeve (4), The compression spring (5) and the partial expansion tube (2) are then overlaid onto the inner sleeve (6). 5、根据权利要求3或4所述的隐形紧压拉爆螺丝，其特征在于: 在所述主体螺栓（1）螺帽与上套管（4）之间设置有平垫片（7）。The invisible pressing and squeezing screw according to claim 3 or 4, characterized in that: A flat gasket (7) is disposed between the body bolt (1) nut and the upper sleeve (4). 6、根据权利要求5所述的隐形紧压拉爆螺丝，其特征在于: 所述主体螺栓（1）与平垫片（7）为一体成型或平垫片（7）为独立部件套接在所述主体螺栓（1）上。6. The invisible pressing and squeezing screw according to claim 5, wherein: The main body bolt (1) and the flat washer (7) are integrally formed or the flat washer (7) is sleeved on the main body bolt (1) as a separate component. 7、根据权利要求6所述的隐形紧压拉爆螺丝，其特征在于: 所述主体螺栓（1）的螺帽的外形为六角形或四方形，其顶部具有内六角形凹槽或十字凹 7. The invisible squeeze plunger according to claim 6, wherein: The nut of the main body bolt (1) has a hexagonal shape or a square shape, and has a hexagonal groove or a cross recess at the top. 槽。groove. 8、根据权利要求6所述的隐形紧压拉爆螺丝，其特征在于:所述主体螺栓（1）的螺帽的外形为圆形或球形，其顶部具有内六角形凹槽或十字凹槽。The invisible pressing and squeezing screw according to claim 6, wherein the nut of the main body bolt (1) has a circular or spherical shape, and has a hexagonal groove or a cross recess at the top. . 9、根据权利要求6或7所述的隐形紧压拉爆螺丝，其特征在于:所述膨胀管（2）的直径大于所述圆台形膨胀头（3）上端的外经，但小于所述圆台形膨胀头（3）下端的外经，所述膨胀管（2）管壁的中下部有多条径向切口。The invisible pressing and squeezing screw according to claim 6 or 7, wherein the diameter of the expansion tube (2) is larger than the outer diameter of the upper end of the truncated-shaped expansion head (3), but smaller than The outer end of the lower end of the truncated-shaped expansion head (3) has a plurality of radial slits in the middle and lower portions of the wall of the expansion tube (2). 10、根据权利要求3或4所述的隐形紧压拉爆螺丝，其特征在于:所述圆台形膨胀头（3）的外壁面设置有防滑凹槽。The invisible pressing and squeezing screw according to claim 3 or 4, characterized in that the outer wall surface of the truncated cone-shaped expansion head (3) is provided with a non-slip groove.
PCT/CN2012/075139 2011-06-10 2012-05-07 Invisible pressure expansion screw Ceased WO2012167679A1 (en)

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