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CN100425847C - Locking nut - Google Patents

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Publication number
CN100425847C
CN100425847C CNB2006100251147A CN200610025114A CN100425847C CN 100425847 C CN100425847 C CN 100425847C CN B2006100251147 A CNB2006100251147 A CN B2006100251147A CN 200610025114 A CN200610025114 A CN 200610025114A CN 100425847 C CN100425847 C CN 100425847C
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Prior art keywords
elastic member
collar
locknut
loosening nut
nut according
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Expired - Fee Related
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CN1821591A (en
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于逊刚
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  • Component Parts Of Construction Machinery (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

本发明提供了一种防松螺母,属于机械技术领域。它解决了现有的防卸螺母结构复杂、安装好以后不能够拆卸的问题。本防松螺母包括具有螺纹孔的本体,所述的本体端部设有卡圈,本体的外侧设有弹性件,弹性件的端部可卡入卡圈中。在使用本防松螺母时,将安装工具扣于本体上。安装工具放置好后使弹性件闭合,然后转动本体直至将本体紧紧连接在所需连接的螺杆上。安装工具取出后弹性件在自身弹力作用下张开,由于卡圈位于本体端部,使张开后的弹性件端部卡入卡圈中。这样,本体与卡圈就牢牢的连接在了一起,防止本体松动。本防松螺母结构简单、安装简便、易于实施,而且通过工具还可将其拆卸。

Figure 200610025114

The invention provides a locknut, which belongs to the technical field of machinery. It solves the problem that the existing anti-dismounting nut has complex structure and cannot be disassembled after being installed. The anti-loosening nut includes a body with a threaded hole, a collar is provided at the end of the body, and an elastic member is provided outside the body, and the end of the elastic member can be snapped into the collar. When using this locknut, buckle the installation tool on the body. After the installation tool is placed, the elastic member is closed, and then the body is turned until the body is tightly connected to the screw rod to be connected. After the installation tool is taken out, the elastic member is opened under the action of its own elastic force, and since the collar is located at the end of the body, the opened end of the elastic member is snapped into the collar. In this way, the body and the collar are firmly connected together to prevent the body from loosening. The anti-loosening nut has the advantages of simple structure, convenient installation and easy implementation, and can be disassembled by tools.

Figure 200610025114

Description

防松螺母 Locknut

技术领域 technical field

本发明属于机械技术领域,涉及一种紧固件,特别是一种防松螺母。The invention belongs to the technical field of machinery, and relates to a fastener, in particular to a locknut.

背景技术 Background technique

螺母连接应用十分广泛,如煤气表与煤气管路通常就是采用螺母连接的。由于煤气表装于用户家中,为了防止违规窃气行为,以及方便煤气表的安装工作,采用一种连接方便的且能够防止拆卸的螺母就显得很有必要。Nut connections are widely used, such as gas meters and gas pipelines are usually connected by nuts. Because the gas meter is installed in the user's home, in order to prevent illegal gas theft and facilitate the installation of the gas meter, it is necessary to adopt a nut that is easy to connect and can prevent disassembly.

中国专利97230082.1提供一种“防卸螺母”,它由内芯和外芯所组成。内芯装于外芯内,内芯的侧面沿圆周方向开设有若干个斜坡槽,在斜坡槽与外芯内侧之间装有柱形滚针。在安装防松螺母时将外芯沿槽斜坡槽的深端转动,此时,滚针从斜坡槽深端移出,并卡于内芯的斜坡槽与外芯的内侧之间,通过摩擦力带动内芯一同转动,从而使得内芯螺接于连接件上。内芯安装在连接件上后,外芯沿斜坡槽的浅端转动,滚针移至斜坡槽的深端不与外芯内侧接触,内芯无法被外芯带动。显然,防卸螺母安装好以后就不能够拆卸,有效的防止了用户违规窃气。但是,上述防松螺母的内芯结构较复杂,需在其外侧开设若干个斜坡槽,加工工艺繁杂,增加了产品成本。同时,在安装过程中,滚针要先放入斜坡槽内再装入外芯内部,由于滚针数目较多,安装较困难。而且,防卸螺母一旦安装好以后就不能够卸,因此需要拆卸时就必须破坏防卸螺母,检修维护工作就显得十分不便。Chinese patent 97230082.1 provides a kind of " anti-unloading nut ", and it is made up of inner core and outer core. The inner core is installed in the outer core, and the side surface of the inner core is provided with several inclined grooves along the circumferential direction, and cylindrical needle rollers are arranged between the inclined grooves and the inner side of the outer core. When installing the locknut, turn the outer core along the deep end of the sloped groove. At this time, the needle roller moves out from the deep end of the sloped groove, and is stuck between the sloped groove of the inner core and the inner side of the outer core, driven by friction. The inner core rotates together, so that the inner core is screwed on the connecting piece. After the inner core is installed on the connector, the outer core rotates along the shallow end of the slope groove, and the needle roller moves to the deep end of the slope groove without contacting the inside of the outer core, so the inner core cannot be driven by the outer core. Obviously, after the anti-dismounting nut is installed, it cannot be disassembled, which effectively prevents the user from illegally stealing gas. However, the structure of the inner core of the above-mentioned locknut is relatively complicated, and several inclined grooves need to be formed on the outer side thereof, the processing technology is complicated, and the product cost is increased. At the same time, during the installation process, the needle rollers must first be put into the slope groove and then loaded into the outer core. Due to the large number of needle rollers, the installation is more difficult. Moreover, the anti-dismounting nut cannot be unloaded once it is installed, so the anti-dismounting nut must be destroyed when it needs to be disassembled, and the maintenance work is very inconvenient.

发明内容Contents of the invention

本发明的目的是针对现有的螺母所存在的上述问题,提供一种结构新颖的防松螺母,使它不仅能够防止松动,安装好以后通过工具能够再次拆卸,而且装配简便、结构简单、成本低。The purpose of the present invention is to address the above-mentioned problems existing in the existing nuts, and provide a novel structure anti-loosening nut, which can not only prevent loosening, but also can be disassembled again by tools after installation, and is easy to assemble, simple in structure, and low in cost. Low.

本发明的目的可通过下列技术方案来实现:一种防松螺母,包括具有螺纹孔的本体,其特征在于,所述的本体端部设有卡圈,本体的外侧设有弹性件,弹性件的端部可卡入卡圈中。The purpose of the present invention can be achieved through the following technical solutions: a locknut, including a body with a threaded hole, characterized in that a collar is provided at the end of the body, and an elastic member is provided on the outside of the body, and the elastic member end snaps into the collar.

在使用本防松螺母时,将安装工具扣于本体上。安装工具放置好后使弹性件闭合,然后转动本体直至将本体紧紧连接在所需连接的螺杆上。安装工具取出后弹性件在自身弹力作用下张开,由于卡圈位于本体端部,使张开后的弹性件端部卡入卡圈中。这样,本体与卡圈就牢牢的连接在了一起,防止本体松动。When using this locknut, buckle the installation tool on the body. After the installation tool is placed, the elastic member is closed, and then the body is turned until the body is tightly connected to the screw rod to be connected. After the installation tool is taken out, the elastic member is opened under the action of its own elastic force, and since the collar is located at the end of the body, the opened end of the elastic member is snapped into the collar. In this way, the body and the collar are firmly connected together to prevent the body from loosening.

当然,需要拆除本防松螺母时通过上述工具也能够实现。具体而言,工具置于本体处将弹性件闭合,使得弹性件的端部从卡圈中脱离出来。此时,本体与卡圈没有连接在一起,转动本体就可将本防松螺母拆除。Certainly, when it is necessary to dismantle the locknut, it can also be realized by the above-mentioned tools. Specifically, the tool is placed at the body to close the elastic member, so that the end of the elastic member is disengaged from the collar. At this time, the body and the collar are not connected together, and the locknut can be removed by rotating the body.

在上述的防松螺母中,所述的卡圈侧部带有翻沿,上述的弹性件可卡入翻沿中。带有翻沿的卡圈可扣在本体端部,因此,安装过程中卡圈不会位移。In the aforementioned anti-loosening nut, the side portion of the collar is provided with a turning edge, and the above-mentioned elastic member can be snapped into the turning edge. The collar with the turned edge snaps onto the end of the body so the collar will not shift during installation.

在上述的防松螺母中,所述的翻沿上均匀设置有若干个贯通的卡口,上述的弹性件可嵌于卡口中。In the aforementioned anti-loosening nut, a plurality of penetrating bayonets are uniformly arranged on the turning edge, and the above-mentioned elastic member can be embedded in the bayonets.

另一种方案是,在上述的防松螺母中,所述的翻沿上均匀设置有若干个凸出的凸头,上述的弹性件端部带有小孔,凸头可嵌于小孔中。Another solution is that, in the above-mentioned anti-loosening nut, several protruding protrusions are evenly arranged on the turning edge, and the end of the above-mentioned elastic member has a small hole, and the protrusion can be embedded in the small hole .

弹性件嵌于卡口或卡圈上的凸头嵌于弹性件上的小孔都能够将卡圈和本体牢牢的连接在一起。The elastic part is embedded in the bayonet or the protrusion on the collar is embedded in the small hole of the elastic part, which can firmly connect the collar and the body.

在上述的防松螺母中,所述的本体上连接有销轴,所述的弹性件呈Ω形,弹性件Ω形的弧形头部套在销轴上。In the aforementioned locknut, a pin shaft is connected to the body, the elastic member is Ω-shaped, and the arc-shaped head of the elastic member Ω-shaped is sleeved on the pin shaft.

在上述的防松螺母中,所述的弹性件嵌于卡口内一端的另一端带有弯折,该弯折位于本体的端面与卡圈的端面之间。通过这样的结构,使得弹性件的弯折端不会松动。In the aforementioned locknut, the other end of the elastic member embedded in the bayonet has a bend, and the bend is located between the end surface of the body and the end surface of the collar. With such a structure, the bent end of the elastic member will not loosen.

在上述的防松螺母中,所述的本体外侧带有凹槽,上述的弹性件位于凹槽内。In the aforementioned locknut, there is a groove on the outer side of the body, and the above-mentioned elastic member is located in the groove.

在上述的防松螺母中,所述的卡圈内侧带有一个定位爪。定位爪对卡圈起定位作用,防止卡圈位移。In the aforementioned locknut, a positioning claw is provided inside the collar. The positioning claw plays a role in positioning the collar to prevent the collar from shifting.

在上述的防松螺母中,所述的弹性件为片状,弹性件的数量至少为一个。In the aforementioned locknut, the elastic member is in the shape of a sheet, and the number of the elastic member is at least one.

与现有技术相比,本防松螺母仅由卡圈、本体及弹性件组成,因此结构简单、加工方便、成本较低。同时,在安装防松螺母时通过工具将弹性件闭合,本体连接好以后取出工具,弹性件的一端就卡在卡圈上,使得本体与卡圈固连在一起;另外,需要拆卸时通过工具将弹性件闭合,再转动本体即可将卡圈与本体分离,故安装过程不仅简便、易于实施,而且通过工具还可将其拆卸。Compared with the prior art, the anti-loosening nut is only composed of a collar, a body and an elastic member, so the structure is simple, the processing is convenient, and the cost is low. At the same time, when the locknut is installed, the elastic part is closed by a tool. After the body is connected, the tool is taken out, and one end of the elastic part is stuck on the collar, so that the body and the collar are firmly connected together; The elastic part is closed, and then the body is turned to separate the collar from the body, so the installation process is not only simple and easy to implement, but also can be disassembled by tools.

附图说明 Description of drawings

图1是本发明的防松螺母的连接结构示意图。Fig. 1 is a schematic diagram of the connection structure of the locknut of the present invention.

图2是本防松螺母中本体的外形结构示意图。Fig. 2 is a schematic diagram of the outer structure of the main body of the locknut.

图3是本防松螺母中卡圈的外形结构示意图。Fig. 3 is a schematic diagram of the shape and structure of the collar in the locknut.

图4是沿图3的侧视结构示意图。FIG. 4 is a schematic diagram of the side view of FIG. 3 .

图中,1、本体;11、凹槽;2、卡圈;21、翻沿  22、卡口;23、定位爪;3、弹性件;31、弯折;4、销轴。In the figure, 1. body; 11. groove; 2. collar; 21. turning edge 22. bayonet; 23. positioning claw; 3. elastic member; 31. bending; 4. pin.

具体实施方式 Detailed ways

如图1所示,本防松螺母由本体1、卡圈2及弹性件3组成。本体1内开有螺纹孔。本实施例中,本体1为六角棱柱形,这样的形状有利于转动本体1,见图2所示。As shown in FIG. 1 , the locknut is composed of a body 1 , a collar 2 and an elastic member 3 . There are threaded holes in the body 1 . In this embodiment, the body 1 is in the shape of a hexagonal prism, which is beneficial to rotating the body 1 , as shown in FIG. 2 .

如图1和图4所示,卡圈2的侧部带有翻沿21,翻沿21上开有若干个均匀分布的卡口22。As shown in FIG. 1 and FIG. 4 , the side of the collar 2 has a turning edge 21 , and several evenly distributed bayonet openings 22 are formed on the turning edge 21 .

如图1所示,本体1的外侧开有两道对称设置的凹槽11,且在凹槽11处固连着销轴4。弹性件3为片状且大致呈Ω形,它的Ω弧形头部套在销轴4上。As shown in FIG. 1 , two symmetrical grooves 11 are formed on the outer side of the body 1 , and the pin shaft 4 is fixedly connected to the grooves 11 . The elastic member 3 is sheet-shaped and roughly omega-shaped, and its omega-shaped arc head is sleeved on the pin shaft 4 .

在安装本防松螺母时,安装工具扣于本体1外侧,将本体1上的弹性件3闭合,然后转动本体1将它连接在所需连接的螺杆上。由于卡圈2扣在本体1端部,因此安装工具取出后弹性件3受其自身弹力向外张开,张开后的弹性件3其中一端就嵌在卡圈2的卡口22内,弹性件3的另一端紧靠本体1上的凹槽11底部。本实施例中,弹性件3紧靠在凹槽11的一端带有弯折31,该弯折31处于卡圈2与本体1的端面之间。通过这样的结构防止弹性件3松动。可以看出,弹性件3的端部一旦嵌于卡圈2的卡口22中,卡圈2与本体1就牢牢的连接在一起。本实施例中,卡圈2的内侧带有定位爪23,通过它防止在安装过程中卡圈2位移,见图3所示。When installing the locknut, the installation tool is buckled on the outside of the body 1, the elastic member 3 on the body 1 is closed, and then the body 1 is rotated to connect it to the screw to be connected. Since the collar 2 is buckled on the end of the body 1, after the installation tool is taken out, the elastic member 3 is opened outward by its own elastic force, and one end of the opened elastic member 3 is embedded in the bayonet 22 of the collar 2, and the elastic The other end of the piece 3 is close to the bottom of the groove 11 on the body 1 . In this embodiment, one end of the elastic member 3 close to the groove 11 has a bend 31 , and the bend 31 is located between the collar 2 and the end surface of the body 1 . This structure prevents the elastic member 3 from loosening. It can be seen that once the end of the elastic member 3 is embedded in the bayonet 22 of the collar 2, the collar 2 and the body 1 are firmly connected together. In this embodiment, the inner side of the collar 2 has a positioning claw 23, which prevents the collar 2 from being displaced during installation, as shown in FIG. 3 .

当然,需要拆卸本防松螺母时。通过上述工具将弹性件3闭合,弹性件3嵌于卡口22的一端就从卡口22中脱离出来。可以看出,此时卡圈2与本体1没有连接在一起,转动本体1后就可将本防松螺母拆除。Of course, when the locknut needs to be disassembled. The elastic member 3 is closed by the tool, and the end of the elastic member 3 embedded in the bayonet 22 is released from the bayonet 22 . It can be seen that the collar 2 is not connected with the body 1 at this time, and the locknut can be removed after turning the body 1 .

另外,在弹性件3上设置小孔,在翻沿21内侧设置凸头也能够达到将卡圈2与本体1固连接在一起的目的。In addition, providing a small hole on the elastic member 3 and a protruding head on the inside of the turning edge 21 can also achieve the purpose of firmly connecting the collar 2 and the body 1 .

Claims (9)

1、一种防松螺母,包括具有螺纹孔的本体(1),其特征在于,所述的本体(1)端部设有卡圈(2),本体(1)的外侧设有弹性件(3),弹性件(3)的端部可卡入卡圈(2)中。1. A locknut, comprising a body (1) with a threaded hole, characterized in that, the end of the body (1) is provided with a collar (2), and the outside of the body (1) is provided with an elastic member ( 3), the end of the elastic member (3) can be snapped into the collar (2). 2、根据权利要求1所述的防松螺母,其特征在于,所述的卡圈(2)侧部带有翻沿(21),上述的弹性件(3)可卡入翻沿(21)中。2. The anti-loosening nut according to claim 1, characterized in that the collar (2) has a turning edge (21) on the side, and the above-mentioned elastic member (3) can be snapped into the turning edge (21) middle. 3、根据权利要求2所述的防松螺母,其特征在于,所述的翻沿(21)上均匀设置有若干个贯通的卡口(22),上述的弹性件(3)可嵌于卡口(22)中。3. The anti-loosening nut according to claim 2, characterized in that several through bayonets (22) are uniformly arranged on the turning edge (21), and the above-mentioned elastic member (3) can be embedded in the bayonet In the mouth (22). 4、根据权利要求2所述的防松螺母,其特征在于,所述的翻沿(21)上均匀设置有若干个凸出的凸头,上述的弹性件(3)端部带有小孔,凸头可嵌于小孔中。4. The anti-loosening nut according to claim 2, characterized in that several protruding heads are uniformly arranged on the turning edge (21), and the end of the above-mentioned elastic member (3) has a small hole , The convex head can be embedded in the small hole. 5、根据权利要求1至4任一项所述的防松螺母,其特征在于,所述的本体(1)上连接有销轴(4),所述的弹性件(3)呈Ω形,弹性件(3)Ω形的弧形头部套在销轴(4)上。5. The anti-loosening nut according to any one of claims 1 to 4, characterized in that a pin shaft (4) is connected to the body (1), and the elastic member (3) is Ω-shaped, The arc-shaped head of the elastic part (3) Ω is sleeved on the pin shaft (4). 6、根据权利要求3所述的防松螺母,其特征在于,所述的弹性件(3)嵌于卡口(22)内一端的另一端带有弯折(31),该弯折(31)位于本体(1)的端面与卡圈(2)的端面之间。6. The anti-loosening nut according to claim 3, characterized in that, the other end of the elastic member (3) embedded in the bayonet (22) has a bend (31), and the bend (31) ) is located between the end face of the body (1) and the end face of the collar (2). 7、根据权利要求1至4任一项所述的防松螺母,其特征在于,所述的本体(1)外侧带有凹槽(11),上述的弹性件(3)位于凹槽(11)内。7. The anti-loosening nut according to any one of claims 1 to 4, characterized in that there is a groove (11) on the outside of the body (1), and the above-mentioned elastic member (3) is located in the groove (11) )Inside. 8、根据权利要求1至4任一项所述的防松螺母,其特征在于,所述的卡圈(2)内侧带有一个定位爪(23)。8. The anti-loosening nut according to any one of claims 1 to 4, characterized in that there is a positioning claw (23) inside the collar (2). 9、根据权利要求1至4任一项所述的防松螺母,其特征在于,所述的弹性件(3)为片状,弹性件(3)的数量至少为一个。9. The anti-loosening nut according to any one of claims 1 to 4, characterized in that, the elastic member (3) is in the shape of a sheet, and the number of the elastic member (3) is at least one.
CNB2006100251147A 2006-03-27 2006-03-27 Locking nut Expired - Fee Related CN100425847C (en)

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CN100425847C true CN100425847C (en) 2008-10-15

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Publication number Priority date Publication date Assignee Title
CN104454893A (en) * 2014-11-04 2015-03-25 贵州航天精工制造有限公司 Hole embedded anti-rotation floating self-locking nut connecting assembly and method
CN108223548A (en) * 2017-12-26 2018-06-29 中国航发四川燃气涡轮研究院 A kind of shaft end nut locking mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2031860U (en) * 1988-04-27 1989-02-01 湖南省长沙市湘涟机械厂 Elastic inserter locknut
US4907924A (en) * 1988-12-05 1990-03-13 Maclean-Fogg Company Backward starting locknut
JPH0868416A (en) * 1994-08-29 1996-03-12 Nitto Seiko Co Ltd Locking nut with built-in elastic ring
CN2643060Y (en) * 2003-07-18 2004-09-22 玉环县双丰铸件有限公司 Locknut
CN2908895Y (en) * 2006-03-27 2007-06-06 于逊刚 Locknut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2031860U (en) * 1988-04-27 1989-02-01 湖南省长沙市湘涟机械厂 Elastic inserter locknut
US4907924A (en) * 1988-12-05 1990-03-13 Maclean-Fogg Company Backward starting locknut
JPH0868416A (en) * 1994-08-29 1996-03-12 Nitto Seiko Co Ltd Locking nut with built-in elastic ring
CN2643060Y (en) * 2003-07-18 2004-09-22 玉环县双丰铸件有限公司 Locknut
CN2908895Y (en) * 2006-03-27 2007-06-06 于逊刚 Locknut

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