WO2018133696A1 - 一种自锁型紧固线夹 - Google Patents

一种自锁型紧固线夹 Download PDF

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Publication number
WO2018133696A1
WO2018133696A1 PCT/CN2018/071840 CN2018071840W WO2018133696A1 WO 2018133696 A1 WO2018133696 A1 WO 2018133696A1 CN 2018071840 W CN2018071840 W CN 2018071840W WO 2018133696 A1 WO2018133696 A1 WO 2018133696A1
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WO
WIPO (PCT)
Prior art keywords
locking
clip
female
self
shaped male
Prior art date
Application number
PCT/CN2018/071840
Other languages
English (en)
French (fr)
Inventor
胡超强
尤占山
孙建吉
覃丹
陈雪儿
卢广业
张开拓
王延发
张仕欢
郝燕
邵源鹏
程雪丽
Original Assignee
广州番禺电缆集团有限公司
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Application filed by 广州番禺电缆集团有限公司 filed Critical 广州番禺电缆集团有限公司
Priority to EP18741073.3A priority Critical patent/EP3573206B1/en
Publication of WO2018133696A1 publication Critical patent/WO2018133696A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/05—Suspension arrangements or devices for electric cables or lines
    • H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
    • H02G7/056—Dead-end clamps

Definitions

  • the invention relates to the field of cable installation, in particular to a self-locking fastening clamp.
  • the present invention relates to the field of power tools, and in particular to a self-locking type fastening clip.
  • the cable is installed on the pole or building through the street code.
  • the cable end is usually fixed by bending the cable end around the street code and bending.
  • the bent cable ends are bundled or fixed; at present, the constructor usually bends the cable ends to bend by a conventional method such as manpower or simple tools, and binds the bent cable ends with a cable tie. Due to the relatively large diameter of the cable, it is difficult for the aerial workers to bend and tighten the cable by means of manpower or simple tools.
  • the cable is usually made of aluminum metal wire. Tightening the cable will result in reduced cable insulation and easy cable connection.
  • the insulating outer layer causes damage, and the binding method has no uniform standard, and the randomness is great, which makes it difficult to ensure the tightness of the cable end binding, and the cable end is easily loosened and falls off from the street code, posing a safety hazard.
  • the prior art has improved the conventional cable end fixing method, and the cable clamp is used to fix the cable ends, but these clamps are generally connected by bolts and nuts, and single-person operation is time-consuming and labor-intensive when working at height.
  • the object of the present invention is to overcome the defects existing in the prior art, and to provide a self-locking type fastening clip capable of quickly locking and fixing a bent cable end and fixing the cable to be loose and easy to operate.
  • a self-locking fastening clip includes a U-shaped male clip and a female clip, the U-shaped male clip and the female clip are independent of each other, and the bent portion of the U-shaped male clip is the first clamping portion, and the front side of the female clip Corresponding second clamping portion is provided, the first clamping portion and the second clamping portion can cooperate with the clamping cable, the two sides of the U-shaped male clip are locking rods, and the second clamping portion of the female clamp The two sides of the two sides are respectively provided with through locking holes corresponding to the locking rods, and the locking rods are provided with a plurality of anti-reverse ring teeth of a plurality of oblique locking rod roots arranged in a row, and the locking holes are provided with movable locking on the sides thereof.
  • one end of the locking block is provided with at least one oblique locking hole outlet and can be matched with the locking ring tooth, and the other end abuts the locking spring when the locking rod is inserted from the locking hole inlet
  • the locking spring pushes the locking block so that the locking teeth of the locking block abut against the locking ring teeth of the locking rod to limit the locking rod so that it can only advance without reverse movement.
  • one end of the locking block is provided with an arc groove corresponding to the locking rod, and the locking tooth is a curved tooth disposed on the arc groove.
  • two of the two locking holes of the female clip are oppositely disposed at opposite ends of the locking spring.
  • the back side of the female clip is provided with a locking groove
  • the locking notch is provided with a cover plate
  • two locking blocks and a locking spring are placed in the locking groove
  • the locking block is in the cover plate and the lock The activity is guided under the guide at the bottom of the groove.
  • the two locking blocks are connected by two locking springs, and two locking blocks between the two locking springs are respectively provided with a pin for connecting the cover plate and the bottom of the locking groove.
  • the column and the two locking blocks are respectively provided with a groove corresponding to the pin.
  • the second clamping portion is a concave curved insulating structure or a concave curved surface insulating structure.
  • the structure of the U-shaped male clip comprises a male clip inner frame made of a metal material and a male clip outer frame made of plastic or rubber material wrapped around the first clamping portion.
  • the structure of the female clip includes a female inner frame body made of a metal material and a female outer frame body made of a plastic or rubber material.
  • the female clip is further provided with a protective cover for protecting the U-shaped male clip locking rod, and the protective cover is detachably connected with the female clip.
  • the protective cover is detachably connected to the female clip by: the protective cover and the female clip are connected by a snap, and the buckle comprises a card disposed on two sides of the inner surface of the protective cover
  • the hook and the corresponding card slot disposed on two sides of the outer surface of the female clip realize the detachable connection of the protective cover and the female clip by the cooperation of the hook and the card slot.
  • the utility model has the beneficial effects that: the anti-reverse self-locking mechanism is formed by the anti-reverse ring teeth on the U-shaped male clamping lock bar and the locking teeth on the locking block in the female clamping lock hole, and the locking spring is formed to form a non-reverse self-locking mechanism, U
  • the type of male clamp can only advance and cannot retreat in the female clamp.
  • the U-shaped male clamp is directly locked into the female clamp and automatically locked, which is not easy to loosen.
  • the lock spring should be pressed back to make the locking block
  • the U-shaped male clip can be freely taken out from the female clip, and the operation is extremely convenient and convenient to use, and is particularly suitable for high-altitude wire-line construction.
  • FIG. 1 is a schematic structural view of a self-locking type fastening clip in an embodiment
  • FIG. 2 is a schematic exploded view of a self-locking type fastening clip in the embodiment
  • Figure 3 is a schematic view showing the structure of a self-locking type fastening clip in another embodiment
  • 21-U type male clip 211-first clamping part, 212-locking rod, 2121-reverse ring tooth, 22-female clip, 221-second clamping part, 222-locking hole, 223 - Locking block, 2231-locking teeth, 224-locking spring, 225-locking groove, 226-cover, 227-pin, 228- protective cover.
  • a self-locking type fastening clip includes a U-shaped male clip 21 and a female clip 22, and the U-shaped male clip 21 and the female clip 22 are independent of each other, and the U-shaped male clip 21 is bent.
  • the folded portion is the first clamping portion 211, and the front surface of the female clip 22 is provided with a corresponding second clamping portion 221, and the first clamping portion 211 and the second clamping portion 221 can cooperate with the clamping cable, and the U-shaped male clip 21
  • the two sides of the second clamping portion 221 of the female clip 22 are respectively provided with through locking holes 222 corresponding to the locking rods 212, and the locking rods 212 are arranged continuously.
  • the side of the locking hole 222 is provided with a movable locking block 223.
  • One end of the locking block 223 is provided with at least one outlet of the oblique locking hole 222 and can
  • the locking teeth 2231 cooperate with the locking ring teeth 2121, and the other end abuts the locking spring 224.
  • the locking spring 224 pushes the locking block 223 to make the locking block
  • the locking teeth 2231 of the 223 abut against the check ring teeth 2121 of the locking bar 212 to limit the locking bar 212 so that it can only advance without reversing movement.
  • the anti-reverse self-locking mechanism is formed by the locking ring gear 2231 on the locking block 223 in the locking hole 222 of the U-shaped male clamp 21 and the locking spring 223 on the locking block 223.
  • the U-shaped male clip 21 can only advance in the female clip 22 and cannot be retracted. When the U-shaped male clip 21 is directly inserted into the female clip 22, it is automatically locked, which is not easy to loosen. When it needs to be opened, only the back pressure lock is needed.
  • the spring 224 retracts the locking block 223, and the U-shaped male clip 21 can be freely taken out from the female clip 22.
  • the operation is extremely convenient and convenient to use, and is particularly suitable for high-altitude wire-line construction.
  • one end of the locking block 223 is provided with an arcuate groove that cooperates with the locking rod 212, and the locking teeth 2231 are arcuate teeth disposed on the arcuate groove.
  • the structure causes the locking block 223 to be tightly huged on the outer surface of the locking rod 212, so that the arc tooth has a larger contact area with the check ring tooth 2121, and the anti-reverse action is more stable.
  • two of the two locking holes 222 of the female clip 22 are oppositely disposed at opposite ends of the locking spring 224.
  • the structure is compact and reasonable, and the limited space on the female clip 22 is effectively utilized.
  • the back side of the female clip 22 is provided with a locking groove 225
  • the locking groove 225 is provided with a cover plate 226, and the two locking blocks 223 and the locking spring 224 are placed in the locking groove 225.
  • the locking block 223 is moved under the guidance of the cover plate 226 and the bottom of the locking groove 225. This structure makes the reciprocating movement of the locking block 223 more stable, and it is convenient to press back the locking spring 224 when the clip is opened.
  • the two locking blocks 223 are connected by two locking springs 224, and two locking blocks 223 are respectively disposed between the two locking springs 224 for connecting the cover plates. 226 and the pin 227 at the bottom of the locking groove 225, each of the two locking blocks 223 is provided with a groove corresponding to the pin 227.
  • the structure is compact and reasonable, and the limited space on the female clip 22 is effectively utilized.
  • the second clamping portion 221 is a concave curved insulating structure or a concave curved surface insulating structure, and the second clamping portion 221 cooperates with the first clamping portion 211 to increase the contact area with the outer surface of the cable. Increase the stability of the U-shaped male clip 21 and the female clip 22 for cable clamping.
  • the structure of the U-shaped male clip 21 includes a male clip inner frame made of a metal material and a plastic or rubber material wrapped around the first clamping portion 211.
  • the outer frame body comprises a female clip 22 inner frame body made of a metal material and a female clip 22 outer frame body made of plastic or rubber material, the structure taking into consideration the rigidity of the clip and the clip Hold the cable for stability, insulation and protect the outer surface of the cable.
  • the female clip 22 is further provided with a protective cover 228 for protecting the U-shaped male clip 21 locking rod 212.
  • the protective cover 228 is detachably connected to the female clip 22. The structure is beneficial for protecting the U-shaped male clip 21 locking rod 212 and the anti-reverse self-locking structure.
  • the protective cover 228 is detachably connected to the female clip 22 in such a manner that the protective cover 228 and the female clip 22 are connected by a snap, and the buckle includes the protection.
  • the hooks on both sides of the inner surface of the cover 228 and the corresponding card slots provided on the two sides of the outer surface of the female clip 22 enable the detachable connection of the protective cover 228 and the female clip 22 by the cooperation of the hook and the card slot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

一种自锁型紧固线夹，包括U型公夹(21)和母夹(22)，U型公夹(21)的弯折处为第一夹线部(211)，母夹(22)设有第二夹线部(221)，第一夹线部(211)和第二夹线部(221)能够配合夹持电缆，U型公夹(21)的两侧杆为锁紧杆(212)，母夹(22)上设有对应的贯穿锁紧孔(222)，锁紧杆(212)上设有止逆环齿(2121)，锁紧孔(222)侧边设有活动的锁紧块(223)，锁紧块(223)设有对应的锁紧齿(2231)，锁紧块(223)抵接锁紧弹簧(224)，锁紧弹簧(224)推动锁紧块(223)使锁紧齿(2231)抵接在锁紧杆(212)的止逆环齿(2121)上从而限制锁紧杆(212)使其只能前进而不能逆向运动，形成止逆自锁机构，U型公夹(21)在母夹(22)中只能前进不能后退，操作时，直接将U型公夹(21)插入母夹(22)后就自动锁紧，不易松脱，打开时，只需回压锁紧弹簧(224)使锁紧块(223)收回，即可自由将U型公夹(21)从母夹(22)中取出，操作极为便捷，使用方便，特别适合高空架线施工。

Description

一种自锁型紧固线夹 技术领域
本发明涉及电缆的安装领域，尤其是一种自锁型紧固线夹。
背景技术
技术领域
本发明涉及电力工具领域，具体是涉及一种自锁型紧固线夹。
背景技术
当今社会上用电安全，保证电网安全稳定运行十分重要，电缆通过街码架设在电线杆或建筑物上，电缆端头的固定一般是将电缆端头绕过街码瓷碌进行折向弯曲并在拉紧状态下，将弯折的电缆端头捆绑或固定；目前，施工人员通常通过人力或者简易工具等传统方式将电缆端头折向弯曲并使用扎线将弯折的电缆端头捆绑固定，由于电缆直径较粗，高空作业人员仅仅依靠人力或简易工具很难将电缆折弯并拉紧，扎线一般是铝制金属细线，勒紧在电缆上会导致电缆绝缘性降低，容易对电缆绝缘外层造成损害，而且捆绑方法没有统一标准，随意性很大，导致电缆端头捆绑的牢固性难以保证，电缆端头容易松脱而从街码上脱落下来，带来安全隐患。
现有技术对传统的电缆端头固定方式进行了改进，利用线夹固定电缆端头，但这些线夹普遍采用螺栓配合螺母的方式来连接，高空作业时，单人操作比较费时费力。
发明内容
本发明的目的在于克服现有技术中存在的缺陷，提供一种能够快速将弯折的电缆端头锁紧固定，且夹持电缆稳固不易松脱，操作便捷的自锁型紧固线夹。
本发明通过下列技术方案来实现：
一种自锁型紧固线夹，包括一U型公夹和一母夹，U型公夹和母夹相互独立，U型公夹的弯折处为第一夹线部，母夹的正面设有对应的第二夹线部，第一夹线部和第二夹线部能够配合夹持电缆，U型公夹的两侧杆为锁紧杆，所述母夹上第二夹线部的两侧分别设有对应锁紧杆的贯穿锁紧孔，锁紧杆上设有连续排列的若干个斜向锁紧杆根部的止逆环齿，锁紧孔侧边设有活动的锁紧块，锁紧块的一端设有至少一个斜向锁紧孔出口且能与止逆环齿相配合的锁紧齿，另一端抵接锁紧弹簧，当锁紧杆从锁紧孔进口插入时，锁紧弹簧推动锁紧块使锁紧块的锁紧齿抵接在锁紧杆的止逆环齿上从而限制锁紧杆使其只能前进而不能逆向运动。
进一步的改进方案如下：
优选地，所述锁紧块的一端设有与所述锁紧杆相配合的弧形槽，所述锁紧齿为设置在弧形槽上的弧形齿。
优选地，所述母夹的两个锁紧孔中的两个锁紧块相对设置在所述锁紧弹簧的两端。
优选地，所述母夹的背面设有锁紧槽，锁紧槽口设有盖板，两个所述锁紧块和锁紧弹簧放置在锁紧槽中，锁紧块在盖板和锁紧槽底部的导向下活动。
优选地，两个所述锁紧块通过两根所述锁紧弹簧相连，两根锁紧弹簧之间对应两个锁紧块各设置一个用来连接所述盖板和锁紧槽底部的销柱，两个 锁紧块上各设置一个对应销柱的凹槽。
优选地，所述第二夹线部为凹弧形绝缘结构或者凹折弯面绝缘结构。
优选地，所述U型公夹的结构包括由金属材料制成的公夹内架体和包覆在所述第一夹线部周围的由塑料或橡胶材料制成的公夹外架体，所述母夹的结构包括由金属材料制成的母夹内架体和由塑料或橡胶材料制成的母夹外架体。
优选地，所述母夹上还设有用于防护所述U型公夹锁紧杆的防护盖，所述防护盖与所述母夹进行可拆卸连接。
优选地，所述防护盖与所述母夹可拆卸连接的方式为：所述防护盖与所述母夹通过卡扣连接，所述卡扣包括设在所述防护盖内表面两侧的卡钩，以及对应设在所述母夹外表面两侧的卡槽，通过卡钩和卡槽的配合实现防护盖与母夹的可拆卸连接。
本发明的有益效果是：通过U型公夹锁紧杆上的止逆环齿和母夹锁紧孔内锁紧块上的锁紧齿，配合锁紧弹簧，形成止逆自锁机构，U型公夹在母夹中只能前进不能后退，操作时，直接将U型公夹插入母夹后就自动锁紧，不易松脱，需要打开时，只需要回压锁紧弹簧使锁紧块收回，即可自由将U型公夹从母夹中取出，操作极为便捷，使用方便，特别适合高空架线施工。
以下将结合附图对本发明的构思、具体结构及产生的效果作进一步说明，以充分地理解本发明的目的、特征和效果。
附图说明
图1是实施例中一种自锁型紧固线夹的结构示意图；
图2是实施例中一种自锁型紧固线夹的分解结构示意图；
图3实施例中一种自锁型紧固线夹另一视角的结构示意图；
其中：21-U型公夹，211-第一夹线部，212-锁紧杆，2121-止逆环齿，22-母夹，221-第二夹线部，222-锁紧孔，223-锁紧块，2231-锁紧齿，224-锁紧弹簧，225-锁紧槽，226-盖板，227-销柱，228-防护盖。
具体实施方式
以下结合附图对本发明一种自锁型紧固线夹作进一步描述：
需要说明的是，本说明书所使用的术语“上”、“下”、“前”、“后”以及类似表述只是为了说明的目的，具体根据实施例中的实际情况而定。
如图1-3所示，一种自锁型紧固线夹，包括一U型公夹21和一母夹22，U型公夹21和母夹22相互独立，U型公夹21的弯折处为第一夹线部211，母夹22的正面设有对应的第二夹线部221，第一夹线部211和第二夹线部221能够配合夹持电缆，U型公夹21的两侧杆为锁紧杆212，所述母夹22上第二夹线部221的两侧分别设有对应锁紧杆212的贯穿锁紧孔222，锁紧杆212上设有连续排列的若干个斜向锁紧杆212根部的止逆环齿2121，锁紧孔222侧边设有活动的锁紧块223，锁紧块223的一端设有至少一个斜向锁紧孔222出口且能与止逆环齿2121相配合的锁紧齿2231，另一端抵接锁紧弹簧224，当锁紧杆212从锁紧孔222进口插入时，锁紧弹簧224推动锁紧块223使锁紧块223的锁紧齿2231抵接在锁紧杆212的止逆环齿2121上从而限制锁紧杆212使其只能前进而不能逆向运动。通过U型公夹21锁紧杆212上的止逆环齿2121和母夹22锁紧孔222内锁紧块223上的锁紧齿2231，配合锁紧弹簧224，形成止逆自锁机构，U型公夹21在母夹22中只能前进不能后退，操作时，直接将U型公夹21插入母夹22后就自动锁紧，不易松脱，需要打开时， 只需要回压锁紧弹簧224使锁紧块223收回，即可自由将U型公夹21从母夹22中取出，操作极为便捷，使用方便，特别适合高空架线施工。
作为优选的实施方式，所述锁紧块223的一端设有与所述锁紧杆212相配合的弧形槽，所述锁紧齿2231为设置在弧形槽上的弧形齿。该结构使锁紧块223紧紧抱在锁紧杆212的外表面，使弧形齿与止逆环齿2121接触面积更大，止逆作用更稳固。
作为优选的实施方式，所述母夹22的两个锁紧孔222中的两个锁紧块223相对设置在所述锁紧弹簧224的两端。该结构设计紧凑合理，有效利用了母夹22上有限的空间。
作为优选的实施方式，所述母夹22的背面设有锁紧槽225，锁紧槽225口设有盖板226，两个所述锁紧块223和锁紧弹簧224放置在锁紧槽225中，锁紧块223在盖板226和锁紧槽225底部的导向下活动。该结构使锁紧块223的往复移动更加平稳，而且方便需要打开线夹时回压锁紧弹簧224。
作为优选的实施方式，两个所述锁紧块223通过两根所述锁紧弹簧224相连，两根锁紧弹簧224之间对应两个锁紧块223各设置一个用来连接所述盖板226和锁紧槽225底部的销柱227，两个锁紧块223上各设置一个对应销柱227的凹槽。该结构设计紧凑合理，有效利用了母夹22上有限的空间。
作为优选的实施方式，所述第二夹线部221为凹弧形绝缘结构或者凹折弯面绝缘结构，第二夹线部221配合第一夹线部211，增加与电缆外表面的接触面积，增加U型公夹21和母夹22对电缆夹持的稳定性。
作为优选的实施方式，所述U型公夹21的结构包括由金属材料制成的公夹内架体和包覆在所述第一夹线部211周围的由塑料或橡胶材料制成的公夹 外架体，所述母夹22的结构包括由金属材料制成的母夹22内架体和由塑料或橡胶材料制成的母夹22外架体，该结构兼顾线夹的刚度、夹持电缆的稳固性、绝缘性和保护电缆外表面。
作为优选的实施方式，所述母夹22上还设有用于防护所述U型公夹21锁紧杆212的防护盖228，所述防护盖228与所述母夹22进行可拆卸连接。该结构有利于保护U型公夹21锁紧杆212及止逆自锁结构。
作为优选的实施方式，所述防护盖228与所述母夹22可拆卸连接的方式为：所述防护盖228与所述母夹22通过卡扣连接，所述卡扣包括设在所述防护盖228内表面两侧的卡钩，以及对应设在所述母夹22外表面两侧的卡槽，通过卡钩和卡槽的配合实现防护盖228与母夹22的可拆卸连接。
附图中给出了本发明的较佳实施例。但是，本发明可以以许多不同的形式来实现，并不限于本说明书所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。

Claims (9)

  1. 一种自锁型紧固线夹，其特征在于，包括一U型公夹和一母夹，U型公夹和母夹相互独立，U型公夹的弯折处为第一夹线部，母夹的正面设有对应的第二夹线部，第一夹线部和第二夹线部能够配合夹持电缆，U型公夹的两侧杆为锁紧杆，所述母夹上第二夹线部的两侧分别设有对应锁紧杆的贯穿锁紧孔，锁紧杆上设有连续排列的若干个斜向锁紧杆根部的止逆环齿，锁紧孔侧边设有活动的锁紧块，锁紧块的一端设有至少一个斜向锁紧孔出口且能与止逆环齿相配合的锁紧齿，另一端抵接锁紧弹簧，当锁紧杆从锁紧孔进口插入时，锁紧弹簧推动锁紧块使锁紧块的锁紧齿抵接在锁紧杆的止逆环齿上从而限制锁紧杆使其只能前进而不能逆向运动。
  2. 根据权利要求1所述的自锁型紧固线夹，其特征在于，所述锁紧块的一端设有与所述锁紧杆相配合的弧形槽，所述锁紧齿为设置在弧形槽上的弧形齿。
  3. 根据权利要求1所述的自锁型紧固线夹，其特征在于，所述母夹的两个锁紧孔中的两个锁紧块相对设置在所述锁紧弹簧的两端。
  4. 根据权利要求3所述的自锁型紧固线夹，其特征在于，所述母夹的背面设有锁紧槽，锁紧槽口设有盖板，两个所述锁紧块和锁紧弹簧放置在锁紧槽中，锁紧块在盖板和锁紧槽底部的导向下活动。
  5. 根据权利要求4所述的自锁型紧固线夹，其特征在于，两个所述锁紧块通过两根所述锁紧弹簧相连，两根锁紧弹簧之间对应两个锁紧块各设置一个用来连接所述盖板和锁紧槽底部的销柱，两个锁紧块上各设置一个对应销柱的凹槽。
  6. 根据权利要求1-5任一所述的自锁型紧固线夹，其特征在于，所述第 二夹线部为凹弧形绝缘结构或者凹折弯面绝缘结构。
  7. 根据权利要求1-5任一所述的自锁型紧固线夹，其特征在于，所述U型公夹的结构包括由金属材料制成的公夹内架体和包覆在所述第一夹线部周围的由塑料或橡胶材料制成的公夹外架体，所述母夹的结构包括由金属材料制成的母夹内架体和由塑料或橡胶材料制成的母夹外架体。
  8. 根据权利要求1-5任一所述的自锁型紧固线夹，其特征在于，所述母夹上还设有用于防护所述U型公夹锁紧杆的防护盖，所述防护盖与所述母夹进行可拆卸连接。
  9. 根据权利要求8所述的自锁型紧固线夹，其特征在于，所述防护盖与所述母夹可拆卸连接的方式为：所述防护盖与所述母夹通过卡扣连接，所述卡扣包括设在所述防护盖内表面两侧的卡钩，以及对应设在所述母夹外表面两侧的卡槽，通过卡钩和卡槽的配合实现防护盖与母夹的可拆卸连接。
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