WO2021184602A1 - 自紧免丝螺母及自动拧紧和拧松方法 - Google Patents

自紧免丝螺母及自动拧紧和拧松方法 Download PDF

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WO2021184602A1
WO2021184602A1 PCT/CN2020/101107 CN2020101107W WO2021184602A1 WO 2021184602 A1 WO2021184602 A1 WO 2021184602A1 CN 2020101107 W CN2020101107 W CN 2020101107W WO 2021184602 A1 WO2021184602 A1 WO 2021184602A1
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nut
tightening
self
clip
thread
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PCT/CN2020/101107
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English (en)
French (fr)
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莫崇规
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莫崇规
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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
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/065—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using screw-thread elements
    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections

Definitions

  • the present invention relates to a nut, and more specifically, to a self-tightening thread-free nut.
  • the self-tightening thread-free nut of the present invention does not need to open the thread on the connected screw, steel bar, pipe and other parts, as long as the outer nut is rotated, the tightening or loosening can be automatically completed, and it can be used for fastening screws, steel bars, pipes and other parts. Or docking.
  • the self-tightening thread-free nut of the present invention has the following advantages: no need to open the thread, as long as the outer nut is rotated, the tightening or loosening can be automatically completed, which saves costs and improves work efficiency.
  • the technical solution of the present invention includes: an outer nut, a middle nut, a clip and a self-tightening nut; the inner side of the outer nut has a thread, which is screwed with the outer thread of the middle nut; the outer side of the middle nut has a thread, and the outer thread
  • the inner threads of the nuts are screwed together, and the center of the middle nut has a conical hole; the outer surface of the clip is a conical surface, and the clip can slide in the conical hole of the middle nut;
  • the inner threads are screwed together.
  • the automatic tightening method of self-tightening non-threaded nuts includes the following steps:
  • the middle nut drives the clip closer to the self-tightening nut
  • the clamping piece tightens the self-tightening nut and drives the self-tightening nut to rotate until the outer nut is fastened to the connected parts and stops rotating.
  • the automatic loosening method of self-tightening non-threaded nuts includes the following steps:
  • One end of the outer nut has an outer nut limit rib to restrict the self-tightening nut or intermediate nut from rotating within the inner range of the outer nut limit rib; the conical hole in the center of the middle nut has an intermediate nut limit rib to restrict the clip from being relative to the middle The nut turns.
  • a spring or washer is installed between the clip and the self-tightening nut.
  • the inner surface of the clip has concavo-convex patterns to enhance the friction and bite force between the clip and the screw.
  • the middle nut and the clip can be connected in series in multiple numbers.
  • the number of clips is 2 to 7 pieces.
  • the self-tightening nut is fixed on the outer nut and cannot rotate between the self-tightening nut and the outer nut.
  • Two self-tightening non-threaded nuts are symmetrically connected together as a nut or a connecting sleeve; the middle nut and clip are tightened to each other, which can replace the self-tightening nut.
  • the shape of the center hole is hexagon, or the outer end is hexagon, which is convenient for rotating and installing with tools.
  • the beneficial effect of the technical solution of the present invention is: no need to open the wire, as long as the outer nut is rotated, the tightening or loosening can be automatically completed, which saves costs and improves work efficiency.
  • Figure 1 is a cross-sectional schematic diagram of a self-tightening thread-free nut:
  • Figure 2 is an exploded schematic diagram of a self-tightening thread-free nut:
  • Figure 3 is a schematic diagram of the assembly of a self-tightening thread-free nut:
  • Figure 4 shows the butt joint intention of self-tightening non-threaded nuts
  • the self-tightening thread-free nut of the present invention includes: an outer nut 1, a middle nut 2, a clip 3, and a self-tightening nut 4;
  • the outer threads of the nut 2 are screwed together;
  • the middle nut 2 has threads on the outer side, which are screwed together with the inner threads of the outer nut 1, and the center of the middle nut 2 has a conical hole;
  • the outer surface of the clip 3 is a conical surface, and the clip 3 can slide in the conical hole of the middle nut 2;
  • the self-tightening nut 4 has threads on the outside, which are screwed with the inner threads of the outer nut 1.
  • the automatic tightening method of the self-tightening thread-free nut of the present invention includes the following steps:
  • the middle nut 2 drives the clip 3 close to the self-tightening nut 4;
  • the automatic loosening method of the self-tightening non-threaded nut of the present invention includes the following steps:
  • the self-tightening threadless nut of the present invention has an outer nut limiting rib 11 at one end of the outer nut 1 to limit the self-tightening nut 4 or the intermediate nut 2 within the outer nut limiting rib 11 Internal rotation; the conical hole in the center of the middle nut 2 has a middle nut limiting rib 21, which restricts the clip 3 from rotating relative to the middle nut 2.
  • Embodiment 5 as shown in FIG. 1, the self-tightening thread-free nut of the present invention is provided with a spring or a washer between the clip 3 and the self-tightening nut 4.
  • Embodiment 6 as shown in Fig. 2 of the self-tightening thread-free nut of the present invention, the inner surface of the clip 3 has concavities and convexities to enhance the friction and bite force between the clip 3 and the screw.
  • Embodiment 7 as shown in FIG. 1, the self-tightening thread-free nut of the present invention, the middle nut 2 and the clip 3 can be used in series in multiples.
  • the number of the clip 3 is 2 to 7 pieces.
  • Embodiment 9 as shown in FIG. 1, the self-tightening screw-free nut of the present invention is shown in which the self-tightening nut 4 is fixed on the outer nut 1, and the self-tightening nut 4 and the outer nut 1 cannot rotate.
  • Embodiment 10 as shown in Figure 4, the self-tightening thread-free nut of the present invention, two self-tightening thread-free nuts are symmetrically connected together as a nut or a connecting sleeve; the middle nut 2 and the clip 3 are tightened to each other, which can be substituted Self-tightening nut 4.
  • the self-tightening thread-free nut of the present invention has a hole in the center of the self-tightening nut 4, and the shape of the center hole is hexagonal, or the outer end is hexagonal, which is convenient for rotating and installing with tools.
  • the beneficial effect of the technical solution of the present invention is: no need to open the wire, as long as the outer nut is rotated, the tightening or loosening can be automatically completed, which saves costs and improves work efficiency.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Clamps And Clips (AREA)

Abstract

自紧免丝螺母，由外螺母（1）、中间螺母（2）、夹片（3）和自紧螺母（4）组成，只要旋转外螺母（1）就可以自动完成拧紧或拧松，无需开丝，节约成本，提高工作效率。

Description

自紧免丝螺母及自动拧紧和拧松方法 技术领域
本发明涉及螺母，更具体地说，涉及自紧免丝螺母。
背景技术
目前，螺杆与螺母连接时，需要在螺杆上开丝，耗费大量的时间和成本，还时常因为螺纹生锈、滑牙、松动等问题无法使用；当采用挤压套筒等方式连接时，紧固步骤操作繁琐，优势不明显。本发明自紧免丝螺母，不需要在所连接的螺杆、钢筋、管道等零件上开丝，只要旋转外螺母就可以自动完成拧紧或拧松，可以用于螺杆、钢筋、管道等零件紧固或对接。
发明内容
为了克服背景技术的不足，本发明自紧免丝螺母有以下优点：无需开丝，只要旋转外螺母就可以自动完成拧紧或拧松，节约成本，提高工作效率。
本发明的技术方案，包括：外螺母、中间螺母、夹片和自紧螺母组成；所述外螺母内侧有螺纹，与中间螺母的外侧螺纹互相旋合；所述中间螺母外侧有螺纹，与外螺母的内侧螺纹互相旋合，中间螺母中心有圆锥孔；所述夹片外表面为圆锥面，夹片可以在中间螺母的圆锥孔内滑动；所述自紧螺母外侧有螺纹，与外螺母的内侧螺纹互相旋合。
自紧免丝螺母的自动拧紧方法，包含以下步骤：
1)螺杆从夹片中间插入；
2)旋转外螺母；
3)中间螺母相对于外螺母转动；
4)中间螺母带动夹片靠近自紧螺母；
5)夹片顶紧自紧螺母并带动自紧螺母转动，直到外螺母紧固被连接的零件后停止转动。
自紧免丝螺母的自动拧松方法，包含以下步骤：
1)旋转外螺母；
2)中间螺母相对于外螺母转动；
3)中间螺母带动夹片远离自紧螺母；
4)夹片相对于中间螺母滑动，松开所夹紧的螺杆。
外螺母一端有外螺母限位挡边，限制自紧螺母或中间螺母在外螺母限位挡边内侧范围内转动；中间螺母中心的圆锥孔有中间螺母限位挡边，限制夹片不能相对于中间螺母转动。
在夹片和自紧螺母之间装有弹簧或垫片。
夹片内侧表面有凹凸纹，增强夹片与螺杆之间的摩擦力和咬合力。
中间螺母和夹片可以是多个串联在一起。
夹片的数量为2片至7片。
自紧螺母固定在外螺母上，自紧螺母和外螺母之间不可以转动。
两个自紧免丝螺母对称连接在一起，做为螺母或连接套筒；中间螺母和夹片互相顶紧，可以替代自紧螺母。
自紧螺母中心有孔洞，中心孔洞形状为六边形，或外侧一端为六边形，方便用工具旋转安装。
通过上述技术方案，本发明技术方案的有益效果是：无需开丝，只要旋转外螺母就可以自动完成拧紧或拧松，节约成本，提高工作效率。
附图说明
为了更清楚的说明本发明，下面将结合自紧免丝螺母示意图进行说明，下面附图仅仅是本发明的实施例，对于本领域的技术人员来说，在不付出创造性劳动的情况下，还可以根据提供的附图获得其他的附图。
图1为自紧免丝螺母剖面示意图：
外螺母1、中间螺母2、夹片3、自紧螺母4、外螺母限位挡边11。
图2为自紧免丝螺母分解示意图：
外螺母1、中间螺母2、夹片3、自紧螺母4、中间螺母限位挡边21。
图3为自紧免丝螺母装配示意图：
外螺母1、中间螺母2、夹片3、自紧螺母4。
图4为自紧免丝螺母对接意图：
外螺母1。
具体实施方式
实施例1，如图1和2所示本发明自紧免丝螺母，包括：外螺母1、中间螺母2、夹片3和自紧螺母4组成；所述外螺母1内侧有螺纹，与中间螺母2的 外侧螺纹互相旋合；所述中间螺母2外侧有螺纹，与外螺母1的内侧螺纹互相旋合，中间螺母2中心有圆锥孔；所述夹片3外表面为圆锥面，夹片3可以在中间螺母2的圆锥孔内滑动；所述自紧螺母4外侧有螺纹，与外螺母1的内侧螺纹互相旋合。
实施例2，如图1和3所示本发明自紧免丝螺母的自动拧紧方法，包含以下步骤：
1)螺杆从夹片3中间插入；
2)旋转外螺母1；
3)中间螺母2相对于外螺母1转动；
4)中间螺母2带动夹片3靠近自紧螺母4；
5)夹片3顶紧自紧螺母4并带动自紧螺母4转动，直到外螺母1紧固被连接的零件后停止转动。
实施例3，如图1和3所示本发明自紧免丝螺母的自动拧松方法，包含以下步骤：
1)旋转外螺母1；
2)中间螺母2相对于外螺母1转动；
3)中间螺母2带动夹片3远离自紧螺母4；
4)夹片3相对于中间螺母2滑动，松开所夹紧的螺杆。
实施例4，如图1和2所示本发明自紧免丝螺母，外螺母1一端有外螺母限位挡边11，限制自紧螺母4或中间螺母2在外螺母限位挡边11内侧范围内转动；中间螺母2中心的圆锥孔有中间螺母限位挡边21，限制夹片3不能相对于中间螺母2转动。
实施例5，如图1所示本发明自紧免丝螺母，在夹片3和自紧螺母4之间装有弹簧或垫片。
实施例6，如图2所示本发明自紧免丝螺母，夹片3内侧表面有凹凸纹，增强夹片3与螺杆之间的摩擦力和咬合力。
实施例7，如图1所示本发明自紧免丝螺母，中间螺母2和夹片3可以是多个串联在一起使用。
实施例8，如图2所示本发明自紧免丝螺母，夹片3的数量为2片至7片。
实施例9，如图1所示本发明自紧免丝螺母，自紧螺母4固定在外螺母1上，自紧螺母4和外螺母1之间不可以转动。
实施例10，如图4所示本发明自紧免丝螺母，两个自紧免丝螺母对称连接在一起，做为螺母或连接套筒；中间螺母2和夹片3互相顶紧，可以替代自紧螺母4。
实施例11，如图2所示本发明自紧免丝螺母，自紧螺母4中心有孔洞，中心孔洞形状为六边形，或外侧一端为六边形，方便用工具旋转安装。
通过上述技术方案，本发明技术方案的有益效果是：无需开丝，只要旋转外螺母就可以自动完成拧紧或拧松，节约成本，提高工作效率。
任何熟悉本专业的技术人员，在不脱离本发明技术方案，可根据上述揭示的技术内容做出更改或修饰等效实施例，但凡是未脱离本发明技术方案内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (11)

  1. 本自紧免丝螺母，其特征在于，包括：外螺母(1)、中间螺母(2)、夹片(3)和自紧螺母(4)组成；所述外螺母(1)内侧有螺纹，与中间螺母(2)的外侧螺纹互相旋合；所述中间螺母(2)外侧有螺纹，与外螺母(1)的内侧螺纹互相旋合，中间螺母(2)中心有圆锥孔；所述夹片(3)外表面为圆锥面，夹片(3)可以在中间螺母(2)的圆锥孔内滑动；所述自紧螺母(4)外侧有螺纹，与外螺母(1)的内侧螺纹互相旋合。
  2. 根据权利要求1所述自紧免丝螺母的自动拧紧方法，其特征在于，包含以下步骤：
    1)螺杆从夹片(3)中间插入；
    2)旋转外螺母(1)；
    3)中间螺母(2)相对于外螺母(1)转动；
    4)中间螺母(2)带动夹片(3)靠近自紧螺母(4)；
    5)夹片(3)顶紧自紧螺母(4)并带动自紧螺母(4)转动，直到外螺母(1)紧固被连接的零件后停止转动。
  3. 根据权利要求1所述自紧免丝螺母的自动拧松方法，其特征在于，包含以下步骤：
    1)旋转外螺母(1)；
    2)中间螺母(2)相对于外螺母(1)转动；
    3)中间螺母(2)带动夹片(3)远离自紧螺母(4)；
    4)夹片(3)相对于中间螺母(2)滑动，松开所夹紧的螺杆。
  4. 根据权利要求1所述自紧免丝螺母，其特征在于，外螺母(1)一端有外螺母限位挡边(11)，限制自紧螺母(4)或中间螺母(2)在外螺母限位挡边(11)内侧范围内转动；中间螺母(2)中心的圆锥孔有中间螺母限位挡边(21)，限制夹片(3)不能相对于中间螺母(2)转动。
  5. 根据权利要求1所述自紧免丝螺母，其特征在于，在夹片(3)和自紧螺母(4)之间装有弹簧或垫片。
  6. 根据权利要求1所述自紧免丝螺母，其特征在于，夹片(3)内侧表面有凹凸纹，增强夹片(3)与螺杆之间的摩擦力和咬合力。
  7. 根据权利要求1所述自紧免丝螺母，其特征在于，中间螺母(2)和夹片(3)可以是多个串联在一起。
  8. 根据权利要求1所述自紧免丝螺母，其特征在于，夹片(3)的数量为2片至7片。
  9. 根据权利要求1所述自紧免丝螺母，其特征在于，自紧螺母(4)固定在外螺母(1)上，自紧螺母(4)和外螺母(1)之间不可以转动。
  10. 根据权利要求1所述自紧免丝螺母，其特征在于，两个自紧免丝螺母对称连接在一起，做为螺母或连接套筒。
  11. 根据权利要求1所述自紧免丝螺母，其特征在于，自紧螺母(4)中心有孔洞，中心孔洞形状为六边形，或外侧一端为六边形，方便用工具旋转安装。
PCT/CN2020/101107 2020-03-17 2020-07-09 自紧免丝螺母及自动拧紧和拧松方法 WO2021184602A1 (zh)

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