WO2015165262A1 - 一种防退螺栓 - Google Patents

一种防退螺栓 Download PDF

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Publication number
WO2015165262A1
WO2015165262A1 PCT/CN2014/092685 CN2014092685W WO2015165262A1 WO 2015165262 A1 WO2015165262 A1 WO 2015165262A1 CN 2014092685 W CN2014092685 W CN 2014092685W WO 2015165262 A1 WO2015165262 A1 WO 2015165262A1
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WO
WIPO (PCT)
Prior art keywords
screw
groove
bolt
protrusion
screw rod
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PCT/CN2014/092685
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English (en)
French (fr)
Inventor
金福民
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江苏振东港口机械制造有限公司
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Publication of WO2015165262A1 publication Critical patent/WO2015165262A1/zh

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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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object

Definitions

  • the present invention relates to the field of bolts, and more particularly to an anti-back bolt.
  • Bolts are fasteners used to connect parts, and the friction at the support surfaces such as the nut and bolt heads have a loosening effect. Therefore, when the static load and the operating temperature do not change much, the bolts generally do not come loose. However, the bolt may loosen when the impact, vibration, load change, and temperature change are large.
  • the technical problem to be solved by the present invention is to provide a back-proof bolt with high joint strength, more fast connection, better use effect, and effective prevention of loose bolts.
  • the present invention provides a retaining bolt, comprising: a head, a screw, a retaining piece and a nut, the top of the screw is fixedly connected with the head, and the middle of the screw is a sliding rod.
  • the lower part of the screw is provided with an external thread
  • the outer thread of the lower part of the screw is further provided with a groove
  • the stopping piece is arranged in an annular shape
  • the inside of the stopping piece is provided with a space
  • the groove has a matching first protrusion
  • the nut is provided with an internal thread matched with the external thread.
  • both ends of the groove are flush with the upper and lower ends of the external thread.
  • the width of the groove is 1/5-2/5 of the outer diameter of the screw.
  • the depth of the groove is from 1/10 to 1/5 of the outer diameter of the screw.
  • the retaining piece further includes a second protrusion, the second protrusion is located above the first protrusion, and the second protrusion is provided with a skirt .
  • the invention has the beneficial effects that: the anti-retracting bolt of the invention cooperates with the groove on the screw by the anti-retraction bolt, and effectively prevents the bolt from loosening when subjected to impact, vibration, variable load and large temperature change, and the bolting strength is high.
  • the connection is more secure and the effect is better, which can effectively prevent the bolt from loosening.
  • FIG. 1 is a schematic structural view of a preferred embodiment of the anti-back bolt of the present invention.
  • FIG. 2 is a schematic structural view of a retaining piece in a preferred embodiment of the anti-back bolt of the present invention.
  • an embodiment of the present invention includes:
  • a retaining bolt includes: a head 1, a screw 2, a retaining piece 3 and a nut 4, the top of the screw 2 is fixedly connected to the head 1, and the middle of the screw 2 is a slide bar,
  • the lower portion of the screw 2 is provided with an external thread 21, and a groove 22 is further provided at the outer thread 21 of the lower portion of the screw 2.
  • the retaining piece 3 is provided in an annular shape, and the inside of the retaining piece 3 is provided.
  • a first projection 31 is provided which cooperates with the recess 22, and the nut 4 is provided with an internal thread which cooperates with the external thread 21.
  • the screw 2 is first passed through the through hole of the component, and then the retaining piece 3 is put on the screw 2, and the first protrusion 31 is disposed on the stop piece 3, So must be the first After the protrusion 31 is matched with the position of the groove 22, the stop piece 3 can be put on the screw 2, so that the lower part of the screw 2 is fixedly connected with the nut 4 by the external thread 21, since the stop piece 3 does not cooperate with the screw 2 Rotation or displacement occurs, even when the parts are subjected to shock, vibration, variable load and large temperature changes, the bolts will not loosen and the connection fastness is high.
  • both ends of the groove 22 are flush with the upper and lower ends of the external thread 21, respectively.
  • the width of the groove 22 is 1/5 - 2/5 of the outer diameter of the screw 2.
  • the depth of the groove 22 is 1/10 to 1/5 of the outer diameter of the screw.
  • the connection strength of the retaining piece 3 is ensured without affecting the joint strength of the bolt.
  • the retaining piece 3 further includes a second protrusion 32, the second protrusion 32 is located above the first protrusion 31, and the second protrusion 32 is provided with a skirt. Since the thickness of the skirt is thin, it can be caught in the external thread 21, so that the connection of the stopper piece 3 and the screw 2 is more firm and reliable.
  • the anti-retracting bolt of the present invention can effectively prevent the bolt from loosening when subjected to impact, vibration, variable load and large temperature change by the mutual cooperation of the retaining piece and the groove on the screw, and the bolting strength is high, and the connection is high. It is more fast and uses better.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

一种防退螺栓，包括：头部（1）、螺杆（2）、止退片（3）和螺母（4），所述螺杆（2）的顶部与所述头部（1）固定连接，所述螺杆（2）的中部为滑杆，所述螺杆（2）的下部设有外螺纹（21），所述螺杆（2）的下部的外螺纹（21）处还设有一个凹槽（22），所述止退片（3）设置呈圆环状，且所述止退片（3）的内部设有一个与所述凹槽（22）相配合的第一凸起（31），所述螺母（4）上设有与所述外螺纹（21）相配合的内螺纹。通过上述方式，该防退螺栓通过止退片（3）与螺杆（2）上凹槽（22）的相互配合，有效防止螺栓在受到冲击、振动、变载荷以及温度变化较大时发生松动，螺栓连接强度高，连接更加牢度，使用效果更好。

Description

一种防退螺栓 技术领域
本发明涉及螺栓领域，特别是涉及一种防退螺栓。
背景技术
螺栓是用来连接零部件的紧固件，螺母和螺栓头部等支撑表面处的摩擦力具有防松作用，因此，在静载荷和工作温度变化不大时,螺栓一般不会松脱。但在冲击、振动、变载荷以及温度变化较大时,螺栓可能会松动。
发明内容
本发明主要解决的技术问题是提供一种连接强度高、连接更加牢度、使用效果更好、有效防止螺栓松动的防退螺栓。
为解决上述技术问题，本发明提供一种防退螺栓，包括：头部、螺杆、止退片和螺母，所述螺杆的顶部与所述头部固定连接，所述螺杆的中部为滑杆，所述螺杆的下部设有外螺纹，所述螺杆的下部的外螺纹处还设有一个凹槽，所述止退片设置呈圆环状，且所述止退片的内部设有一个与所述凹槽相配合的第一凸起，所述螺母上设有与所述外螺纹相配合的内螺纹。
在本发明一个较佳实施例中，所述凹槽的两端分别与所述外螺纹的上下两端相平齐。
在本发明一个较佳实施例中，所述凹槽的宽度为所述螺杆外径的1/5-2/5。
在本发明一个较佳实施例中，所述凹槽的深度为所述螺杆外径的1/10-1/5。在本发明一个较佳实施例中，所述止退片还包括第二凸起，所述第二凸起位于所述第一凸起的上方，且所述第二凸起上设有裙边。
本发明的有益效果是：本发明防退螺栓通过止退片与螺杆上凹槽的相互配合，有效防止螺栓在受到冲击、振动、变载荷以及温度变化较大时发生松动,螺栓连接强度高，连接更加牢度，使用效果更好，能够有效防止螺栓发生松动。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明的防退螺栓一较佳实施例的结构示意图；
图2是本发明的防退螺栓一较佳实施例中止退片的结构示意图。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1和图2，本发明实施例包括：
一种防退螺栓，包括：头部1、螺杆2、止退片3和螺母4，所述螺杆2的顶部与所述头部1固定连接，所述螺杆2的中部为滑杆，所述螺杆2的下部设有外螺纹21，所述螺杆2的下部的外螺纹21处还设有一个凹槽22，所述止退片3设置呈圆环状，且所述止退片3的内部设有一个与所述凹槽22相配合的第一凸起31，所述螺母4上设有与所述外螺纹21相配合的内螺纹。
这种防退螺栓在使用的过程中，先将螺杆2穿过零部件的通孔，然后将止退片3穿套在螺杆2上，由于止退片3上设有第一凸起31，所以，必须将第一 凸起31与凹槽22位置相配合之后，才能将止退片3穿套在螺杆2上，这样在螺杆2的下部通过外螺纹21与螺母4固定连接，由于止退片3不会与螺杆2发生旋转或移位，即使在零部件受到冲击、振动、变载荷以及温度变化较大时,螺栓也不会松动，连接牢度高。
另外，所述凹槽22的两端分别与所述外螺纹21的上下两端相平齐。
另外，所述凹槽22的宽度为所述螺杆2外径的1/5-2/5。
另外，所述凹槽22的深度为所述螺杆外径的1/10-1/5。对于凹槽22的高度、深度和宽度，皆是在不影响螺栓的连接强度下，又保证止退片3的连接强度。
另外，所述止退片3还包括第二凸起32，所述第二凸起32位于所述第一凸起31的上方，且所述第二凸起32上设有裙边。由于裙边厚度较薄，能够卡在外螺纹21中，使得止退片3与螺杆2的连接更加牢固可靠。
区别于现有技术，本发明防退螺栓通过止退片与螺杆上凹槽的相互配合，有效防止螺栓在受到冲击、振动、变载荷以及温度变化较大时发生松动,螺栓连接强度高，连接更加牢度，使用效果更好。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (5)

  1. 一种防退螺栓，其特征在于，包括：头部、螺杆、止退片和螺母，所述螺杆的顶部与所述头部固定连接，所述螺杆的中部为滑杆，所述螺杆的下部设有外螺纹，所述螺杆的下部的外螺纹处还设有一个凹槽，所述止退片设置呈圆环状，且所述止退片的内部设有一个与所述凹槽相配合的第一凸起，所述螺母上设有与所述外螺纹相配合的内螺纹。
  2. 根据权利要求1所述的防退螺栓，其特征在于，所述凹槽的两端分别与所述外螺纹的上下两端相平齐。
  3. 根据权利要求1所述的防退螺栓，其特征在于，所述凹槽的宽度为所述螺杆外径的1/5-2/5。
  4. 根据权利要求1所述的防退螺栓，其特征在于，所述凹槽的深度为所述螺杆外径的1/10-1/5。
  5. 根据权利要求1所述的防退螺栓，其特征在于，所述止退片还包括第二凸起，所述第二凸起位于所述第一凸起的上方，且所述第二凸起上设有裙边。
PCT/CN2014/092685 2014-04-28 2014-12-01 一种防退螺栓 WO2015165262A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899622A (zh) * 2014-04-28 2014-07-02 江苏振东港口机械制造有限公司 一种防退螺栓
CN106194968A (zh) * 2016-08-30 2016-12-07 阿尔特汽车技术股份有限公司 一种汽车螺栓螺母连接防松结构
CN108506322A (zh) * 2017-02-28 2018-09-07 林志厚 一种用于活动铰接的防松螺栓连接方法

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CN102245914A (zh) * 2008-12-09 2011-11-16 李相哲 防松动螺栓螺母结合体
CN203161765U (zh) * 2012-12-26 2013-08-28 江铃汽车股份有限公司 一种悬挂系统用螺栓螺母组件
CN103899622A (zh) * 2014-04-28 2014-07-02 江苏振东港口机械制造有限公司 一种防退螺栓

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CN201218263Y (zh) * 2008-06-26 2009-04-08 南车戚墅堰机车车辆工艺研究所有限公司 螺纹件的防松结构
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718336A (en) * 1902-06-23 1903-01-13 Siegfried Freund Nut-lock.
CN2102403U (zh) * 1991-08-19 1992-04-22 徐晓波 防松螺栓组件
CN1710297A (zh) * 2005-06-25 2005-12-21 陈通平 一种防盗防松动紧固件
CN201080948Y (zh) * 2007-08-09 2008-07-02 贵州航天精工制造有限公司 一种双头螺纹紧固装置
CN102245914A (zh) * 2008-12-09 2011-11-16 李相哲 防松动螺栓螺母结合体
CN203161765U (zh) * 2012-12-26 2013-08-28 江铃汽车股份有限公司 一种悬挂系统用螺栓螺母组件
CN103899622A (zh) * 2014-04-28 2014-07-02 江苏振东港口机械制造有限公司 一种防退螺栓

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