WO2017107640A1 - 断路器 - Google Patents

断路器 Download PDF

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Publication number
WO2017107640A1
WO2017107640A1 PCT/CN2016/103032 CN2016103032W WO2017107640A1 WO 2017107640 A1 WO2017107640 A1 WO 2017107640A1 CN 2016103032 W CN2016103032 W CN 2016103032W WO 2017107640 A1 WO2017107640 A1 WO 2017107640A1
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WO
WIPO (PCT)
Prior art keywords
counterbore
base
circuit breaker
boss
breaker according
Prior art date
Application number
PCT/CN2016/103032
Other languages
English (en)
French (fr)
Inventor
江华华
郑英川
林诚
萧红卫
Original Assignee
浙江正泰电器股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江正泰电器股份有限公司 filed Critical 浙江正泰电器股份有限公司
Priority to ES16877451T priority Critical patent/ES2881469T3/es
Priority to EP16877451.1A priority patent/EP3396694B1/en
Priority to SG11201805189PA priority patent/SG11201805189PA/en
Publication of WO2017107640A1 publication Critical patent/WO2017107640A1/zh
Priority to ZA2018/04202A priority patent/ZA201804202B/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals

Definitions

  • the utility model relates to the field of low-voltage electrical appliances, in particular to a circuit breaker.
  • Circuit breakers are an important part of the electrical industry and have been widely used. When the circuit is working properly, the circuit breaker can achieve the functions of power failure, power supply and conversion circuit by closing or disconnecting the circuit that supplies power. When the circuit has an overload, loss of voltage, undervoltage or short circuit, the circuit breaker can automatically cut off the circuit to avoid the safety of the staff and the normal operation of the equipment.
  • a cover for protecting the circuit board is required to provide electromagnetic shielding protection for the circuit board.
  • the existing cover assembly is time-consuming and laborious, resulting in a complicated manufacturing process of the circuit breaker and high manufacturing cost.
  • the purpose of the utility model is to overcome the defects of the prior art and provide a circuit breaker with simple structure, high reliability and convenient assembly.
  • a circuit breaker includes a base 1 and a cover plate, a first counterbore 31 is disposed on a front surface of the terminal of the base 1, and an annular second counterbore 32 is disposed on a bottom surface of the terminal of the base 1, wherein the first counterbore is A hollow boss 3a is formed between the 31 and the second counterbore 32, and the first counterbore 31 is located on the boss 3a.
  • annular fourth counterbore 34 is provided between the first counterbore 31 and the second counterbore 32 to facilitate the falling of the boss 3a.
  • the base 1 further includes a third counterbore 33 disposed on the front side of the terminal, and a connection portion 3b is formed between the third counterbore 33 and the second counterbore 32, and the first counterbore 31 is disposed in the third In the counterbore 33, a stepped surface is formed between the third counterbore 33 and the first counterbore 31.
  • annular fourth counterbore 34 is provided in the third counterbore 33 to facilitate the falling of the boss 3a.
  • the fourth counterbore 34 is located between the third counterbore 33 and the first counterbore 31. The roots.
  • the wall thickness between the first counterbore 31 and the second counterbore 32 is 0.75 mm-1.0 mm.
  • the second counterbore 32 has a U-shaped axial section, and the height of the boss 3a is smaller than the height of the second counterbore 32.
  • the axial section of the boss 3a is an isosceles trapezoid, and the diameter of the terminal of the base 1 is gradually reduced from the front side to the back side.
  • the axial section of the first counterbore 31 is an isosceles trapezoid, and the diameter of the terminal of the base 1 is gradually reduced from the front to the back.
  • the first counterbore 31 has a circular cross section perpendicular to the axial direction
  • the second counterbore 32 has a circular cross section perpendicular to the axial direction
  • the first counterbore 31 and the second counterbore The hole 32 is coaxially disposed
  • the third counterbore 33 has a circular cross section perpendicular to the axial direction and is disposed coaxially with the first counterbore 31
  • the cross section of the fourth counterbore 34 is perpendicular to the axial direction. It is annular and is disposed coaxially with the third counterbore 33.
  • the inner diameter R 2 of the outer wall of the second counterbore 32 is greater than the inner diameter r 3 of the third counterbore 33 , and the outer diameter r 2 of the inner wall of the second counterbore 32 is smaller than the inner diameter r 3 of the third counterbore 33 ;
  • the inner diameter R 4 of the outer wall of the fourth counterbore 34 is equal to the inner diameter r 1 of the first counterbore 31 , and the outer diameter r 4 of the inner wall of the fourth counterbore 34 is larger than the inner diameter r 1 of the first counterbore.
  • a first counterbore 31 is disposed on the front surface of the terminal of the base 1, and an annular second counterbore 32 is disposed on the bottom surface of the terminal of the base 1, wherein the first counterbore 31 and the second counterbore A hollow boss 3a is formed between 32.
  • the boss 3a is used for electrically insulating the terminal screw; when the circuit breaker is used for post-board wiring, the boss 3a is detached by an external force and passes through The terminal screw is placed in the second counterbore 32 for electrical insulation. Therefore, the circuit breaker of the present invention has the characteristics of compact structure and low production cost, and can also reduce the preparation of stock in the work, and has better insulation effect. .
  • 1 is a schematic view showing the assembly of the base and the circuit board cover of the present invention
  • FIG. 2 is a perspective view of the base of the present invention
  • FIG. 3 is a schematic structural view of a circuit board cover of the present invention.
  • Figure 5 is a rear perspective view of the base of the present invention.
  • Figure 6 is a cross-sectional view of the base of the present invention.
  • circuit breaker of the present invention The specific embodiment of the circuit breaker of the present invention will be further described below with reference to the embodiments given in FIGS. 1 to 6.
  • the circuit breaker of the present invention is not limited to the description of the following embodiments.
  • a circuit breaker includes a base 1 and a cover plate, and the cover plate is disposed on the base 1 to form a casing of the circuit breaker; further includes a contact system, a trip system, an operating mechanism, and a wiring device disposed in the base 1 And the circuit board module, the contact system is connected with the operating mechanism, the operating mechanism drives the movable contact of the contact system to oscillate and contact and separate the static contact to realize the closing and breaking of the circuit, and the tripping system is connected to the contact system and the wiring device. Used to avoid damage caused by malfunctions.
  • a circuit board cover 2 is provided in the base 1 as a modular protection structure of the circuit board and a rectangular parallel structure of the electromagnetic shielding structure, and a circuit board for accommodating the circuit breaker is disposed therein.
  • the cavity 22 of the module, the circuit breaker of the utility model is disposed around the circuit board module through the circuit board cover 2, which can avoid damage to the circuit board module during installation or debugging, and can also implement electromagnetic circuit on the circuit board module. Shield protection makes the circuit breaker's working performance more stable.
  • a dovetail rib 21 having a boss structure is provided, and a dovetail groove 11 having the same shape and cooperating with the dovetail rib 21 is provided inside the side wall of the susceptor 1, by inserting the dovetail rib 21
  • the dovetail groove 11 is fitted to fix the circuit board cover 2 to the inner side of the side wall of the base 1.
  • the circuit breaker of the utility model is fixed on the side wall of the base 1 by the cover 2, so that the assembly structure and the assembly step are conveniently optimized, and the circuit board cover 2 is fixed by inserting the dovetail slot 11 into the dovetail slot 21 to facilitate the circuit board cover.
  • the assembly of the casing 2 and the number of screw holes provided on the bottom plate of the base 1 can be reduced, and the mechanical strength of the base 1 can be improved while reducing the cost of the circuit breaker production.
  • the notch of the dovetail slot 11 faces the horizontal direction, wherein the dovetail slot 11 is near the side of the base 1
  • One side of the upper edge of the wall is open to push the dovetail 21 from the side into the dovetail groove 11 and close the side by the side wall of the cover plate mounted above the base 1.
  • the circuit board cover 2 is internally fixed in the base 1 by the close fit of the joint between the dovetail 21 and the dovetail slot 11, and the circuit board module is covered. Inside the cavity 22 of the circuit board enclosure 2.
  • the dovetail 21 is aligned with the dovetail slot 11, the cavity 22 of the line cover 2 is aligned with the circuit board module in the base 1, and the circuit board cover 2 is pushed from the top to the bottom to the base.
  • the dovetail 21 is inserted into the dovetail slot 11 to cooperate with each other, and the circuit board cover 2 is placed around the circuit board module.
  • the dovetail slot 11 is designed on the circuit board cover, and the dovetail 21 is disposed on the side wall of the base 1 which is equivalent to the embodiment, and the same purpose can be achieved.
  • the cross-sectional shape of the dovetail 21 and the dovetail groove 11 in the horizontal direction of the bottom plate of the base 1 adopts an isosceles trapezoidal structure, so that the dovetail 21 and the dovetail groove 11 have more convenient processing and low precision requirements.
  • the advantage is that the dovetail 21 and the dovetail groove 11 can be more evenly loaded, work more reliably and have a longer life.
  • the cross-sectional shape of the dovetail 21 and the dovetail groove 11 in the horizontal direction of the bottom plate of the base 1 may also adopt other trapezoidal or trapezoidal structures, such as a cross-shaped structure, or
  • a T-shaped structure is not specifically limited herein.
  • the number of the dovetails 21 on the outer side of the side wall of the circuit board cover 2 may be plural.
  • two dovetails are arranged side by side in the horizontal direction of the bottom plate of the base 1 outside one side wall of the circuit board cover 2.
  • the rib 21 is provided with the same number of dovetail grooves 11 matched with the dovetail rib 21 at the inner upper edge of the side wall of the susceptor 1.
  • a plurality of dovetail slots 11 corresponding to the dovetails 21 may be preset on the inner upper edge of the side wall of the base 1, and the inner side of the side wall of the base 1 is provided with one or more.
  • the dovetail 21 is matched with the dovetail slot 11, so that the dovetail slot 11 in which the circuit board cover 2 is mounted can be selected according to specific needs to adjust the mounting position of the circuit board cover 2.
  • the number of the dovetail 21 and the dovetail groove 11 is not specifically limited.
  • the circuit board cover 2 has a square structure, such as a square or a rectangular parallelepiped, and one side of the circuit board is open to the outside to form the cavity 22 for accommodating the circuit board module.
  • the dovetail slot 11 and the bottom plate of the base 1 are separated by a certain distance, and the dovetail rib 21 is integrally formed with the circuit board cover 2, so that the circuit board cover 2 can be more firmly fixed on the base.
  • the inside of the 1 side wall provides better protection.
  • the outer side wall of the circuit board cover 2 provided with the dovetail groove 11 is coupled with the inner side of the side wall of the pedestal 1, so that the circuit board cover can be 2 is more stably inscribed on the inner side of the side wall of the base 1.
  • the first dovetail slot and the first edge are respectively symmetrically disposed on the upper edge of the inner side of the side wall of the base of the circuit breaker and the lower edge of the inner side of the cover plate of the circuit breaker.
  • the first dovetail slot and the slot of the second dovetail slot are connected to each other.
  • the shape of the dovetail 21 is the same as the overall shape of the inner space of the first dovetail slot and the second dovetail slot, and simultaneously cooperate with the first dovetail slot and the second dovetail slot respectively, through the first dovetail slot and
  • the arrangement of the second dovetail slot not only improves the stability of the circuit board cover 2 in the base 1, but the dovetail 21 on the circuit board cover 2 also functions as a guide and pre-position when the cover is installed.
  • the number of the dovetail 21 and the dovetail groove 11 is not specifically limited.
  • the wiring assembly structure on the base of the circuit breaker of the present invention is provided with a first counterbore 31 on the front side of the terminal end of the base 1, and a ring-shaped second on the bottom surface of the terminal end of the base 1.
  • a counterbore 32 wherein a hollow boss 3a is formed between the first counterbore 31 and the second counterbore 32, the first counterbore 31 is located on the boss 3a, and when the circuit breaker is used for front panel wiring, the terminal screw is placed
  • the counterbore 31 is electrically insulated; when the circuit breaker is used for post-board wiring, the boss 3a is detached by an external force and electrically insulated by placing the terminal screw in the second counterbore 32.
  • the circuit breaker of the present invention can simultaneously meet the requirements of the front panel wiring and the post panel wiring, and further has the advantages of cost reduction and convenient assembly. In addition, it also helps to reduce the stock of stock.
  • the first counterbore 31 has a circular cross-sectional structure
  • the annular second counterbore 32 is disposed opposite to the bottom surface of the base 1 and surrounds the outer wall of the first counterbore 31.
  • a boss 3a for accommodating and insulating the terminal screws is formed between the first counterbore 31 and the second counterbore 32.
  • the second counterbore 32 has a circular cross section and a " ⁇ " shape in the axial direction. The height of the boss 3a is smaller than the height of the second counterbore 32, thereby avoiding operation during installation or debugging. Improperly, the boss 3a is detached.
  • an annular fourth counterbore 34 is provided between the first counterbore 31 and the second counterbore 32 to facilitate the falling of the boss 3a.
  • the arrangement of the counterbore 34 can prevent the structural strength of the connecting portion 3b while avoiding the other tissue structure surface being broken due to the falling of the first counterbore 31, and can avoid the position of the connecting portion 3b when the first counterbore 31 is detached. Burrs and water chestnuts.
  • the susceptor 1 further includes a circular third counterbore 33 disposed on the front side of the terminal, and the first counterbore 31 is disposed in the third counterbore 33, and the third counterbore 33 and the first counterbore 31 are provided.
  • the sub-nut is disposed in the third counterbore, and is located at a root of the stepped surface between the third counterbore 33 and the first counterbore 31.
  • a connecting portion 3b is formed between the third counterbore 33 and the second counterbore 32, and the connecting portion 3b is between the boss 3a and the base 1 so that when the boss 3a is in an external force After the tapping, it will fall off along the position of the connecting portion 3b. Further, by the arrangement of the connecting portion 3b, it is convenient to control the minimum external force required when the boss 3a is detached.
  • the above-mentioned counterbore holes are all circularly arranged in a circle, but in the specific implementation, according to the needs of actual work, the above-mentioned counterbore can also select other structures and settings.
  • the third counterbore 33 has a regular hexagonal shape in which the axial section is matched with the terminal nut, and is not specifically limited herein.
  • the first counterbore 31 has a circular cross section perpendicular to the axial direction
  • the second counterbore 32 has a circular cross section perpendicular to the axial direction
  • the first counterbore 31 and The second counterbore 32 is coaxially disposed
  • the third counterbore 33 has a circular cross section perpendicular to the axial direction and is disposed coaxially with the first counterbore 31
  • the fourth counterbore 34 is perpendicular to the axial direction
  • the cross section is annular and disposed coaxially with the third counterbore 33.
  • the inner diameter R 2 of the outer wall of the second counterbore 32 is larger than the inner diameter r 3 of the third counterbore 33
  • the outer diameter r 2 of the inner wall of the second counterbore 32 is smaller than the inner diameter r 3 of the third counterbore 33 . It can be ensured that a connecting portion 3b having a reasonable structure is formed between the second counterbore 32 and the third counterbore 33.
  • the inner diameter R 4 of the outer wall of the fourth counterbore 34 is equal to the inner diameter r 1 of the first counterbore 31, The outer diameter r 4 of the inner wall of the fourth counterbore 34 is larger than the inner diameter r 1 of the first counterbore. Therefore, the fourth counterbore 34 can provide a better protection effect when the first counterbore 31 is detached.
  • the wall thickness of the boss 3b in the embodiment is 0.75 mm to 1.00 mm, so that the insulation performance of the boss 3a can be ensured while reducing the weight of the circuit breaker of the present invention.
  • the axial section of the boss 3a is an isosceles trapezoid, and the diameter of the front end of the base 1 is gradually reduced toward the opposite side to facilitate the knocking of the boss 3a; the axial section of the first counterbore 31 is equal.
  • the waist trapezoid is gradually reduced in diameter from the front side to the back side of the terminal of the base 1.

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  • Electron Sources, Ion Sources (AREA)

Abstract

断路器，包括基座（1）和盖板，在基座（1）的接线端的正面设置第一沉孔（31），在基座（1）接线端的底面设置环形的第二沉孔（32），其中在第一沉孔（31）和第二沉孔（32）之间形成中空的凸台（3a），第一沉孔（31）位于凸台（3a）上，当断路器用于板前接线时，端子螺钉置于第一沉孔（31）内进行电气绝缘；当断路器用于板后接线时，通过外力作用使凸台（3a）脱落，并通过将端子螺钉置于第二沉孔（32）内进行电气绝缘，因此，断路器具有结构紧凑、生产成本低的特点，还可以减少工作中库存的备料，此外还具有更良好的绝缘效果。

Description

断路器 技术领域
本实用新型涉及低压电器领域，具体涉及一种断路器。
背景技术
断路器是电器工业的重要组成部分，并且已经得到了广泛的应用。当电路工作正常时，断路器可以通过闭合或断开供应电能的电路，来达到停电、供电和转换电路等功能。当电路出现过载、失压、欠压或短路等故障时，断路器又可以自动将电路切断，避免因为电路故障危及工作人员的安全和设备的正常运行。现有的断路器内需设置用于保护线路板的罩壳，为线路板提供电磁屏蔽保护，然而现有的罩壳装配费时费力，导致断路器的制造工序繁琐且制造成本较高。此外，在接线板基座与后接线板基座共用的断路器中，为满足基座同时可以用于板前和板后接线的需要，通常在基座的接线端添加绝缘装置，但是装配工序较为繁琐，且制作成本较高。
发明内容
本实用新型的目的在于克服现有技术的缺陷，提供一种结构简单、可靠性高、方便装配的断路器。
为实现上述目的，本实用新型采用了如下技术方案：
一种断路器，包括基座1和盖板，在基座1的接线端的正面设置第一沉孔31，在基座1接线端的底面设置环形的第二沉孔32，其中在第一沉孔31和第二沉孔32之间形成中空的凸台3a，第一沉孔31位于凸台3a上，当断路器用于板前接线时，端子螺钉置于第一沉孔31内进行电气绝缘；当断路器用于板后接线时，通过外力作用使凸台3a脱落，并通过将端子螺钉置于第二沉孔32内进行电气绝缘。
可选的，在基座1的接线端的正面，第一沉孔31和第二沉孔32之间还设有便于凸台3a脱落的环形的第四沉孔34。
可选的，基座1还包括设置在接线端正面的第三沉孔33，第三沉孔33与所述第二沉孔32之间形成连接部3b，第一沉孔31设置在第三沉孔33内，在第三沉孔33与第一沉孔31之间形成台阶面。
可选的，在所述第三沉孔33内设有便于凸台3a脱落的环形的第四沉孔34，第四沉孔34位于第三沉孔33与第一沉孔31之间台阶面的根部。
可选的，所述第一沉孔31和第二沉孔32之间的凸台3a的壁厚为0.75mm-1.0mm。
可选的，所述第二沉孔32的轴向截面为“凵”字形，所述凸台3a的高度小于第二沉孔32的孔内高度。
可选的，所述凸台3a的轴向截面为等腰梯形，由基座1的接线端的正面向反面方向直径逐渐缩小。
可选的，所述第一沉孔31的轴向截面为等腰梯形，由基座1的接线端的正面向反面方向直径逐渐缩小。
可选的，所述第一沉孔31垂直于轴向的截面为圆形，所述第二沉孔32垂直于轴向的截面为圆环形，所述第一沉孔31和第二沉孔32同轴设置；所述第三沉孔33垂直于轴向的截面为圆形，并与所述第一沉孔31同轴设置；所述第四沉孔34垂直于轴向的截面为圆环形，并与所述第三沉孔33同轴设置。
可选的，所述第二沉孔32外壁的内径R2大于第三沉孔33的内径r3、第二沉孔32内壁的外径r2小于第三沉孔33的内径r3；所述第四沉孔34外壁的内径R4等于第一沉孔31的内径r1、第四沉孔34内壁的外径r4大于第一沉孔的内径r1。
本实用新型的断路器，通过在基座1接线端正面设置第一沉孔31，在基座1接线端的底面设置环形的第二沉孔32，其中在第一沉孔31和第二沉孔32之间形成中空的凸台3a，当断路器用于板前接线时，凸台3a用于对端子螺钉进行电气绝缘；当断路器用于板后接线时，通过外力作用使凸台3a脱落，并通过将端子螺钉置于第二沉孔32内进行电气绝缘，因此，本实用新型的断路器具有结构紧凑、生产成本低的特点，还可以减少工作中库存的备料，此外还具有更良好的绝缘效果。
附图说明
图1是本实用新型基座与线路板罩壳的装配示意图；
图2是本实用新型基座的立体示意图；
图3是本实用新型线路板罩壳的结构示意图；
图4是本实用新型基座的另一立体示意图；
图5是本实用新型基座的背面立体图；
图6是本实用新型基座的截面图。
具体实施方式
以下结合附图1至6给出的实施例，进一步说明本实用新型的断路器的具体实施方式。本实用新型的断路器不限于以下实施例的描述。
一种断路器，包括基座1和盖板，盖板设置在基座1上形成断路器的壳体；还包括设置于基座1内的触头系统、脱扣系统、操作机构、接线装置和线路板模块，触头系统与操作机构连接，操作机构带动触头系统的动触头摆动与静触头接触和分离实现电路的闭合和分断，脱扣系统连接于触头系统和接线装置之间用于避免故障导致的伤害。
如图1-3所示，在基座1内设有一个作为线路板的模块化保护结构和电磁屏蔽结构的长方体结构的线路板罩壳2，其内设有用于容置断路器的线路板模块的腔体22，本实用新型的断路器通过线路板罩壳2设置在线路板模块的周围，可以避免在安装或调试时对线路板模块造成损害，同时还可以实现对线路板模块进行电磁屏蔽保护，使断路器的工作性能更加稳定。在线路板罩壳2侧壁的外侧上设有凸台结构的燕尾筋21，在基座1侧壁内侧设有与燕尾筋21形状相同且相互配合的燕尾槽11，通过将燕尾筋21插入到燕尾槽11配合来将线路板罩壳2内接固定在基座1侧壁的内侧。本实用新型的断路器通过将罩壳2固定在基座1侧壁上，使其装配结构和装配步骤便于优化，通过燕尾筋21插入燕尾槽11来固定线路板罩壳2，方便线路板罩壳2的装配，而且可以减少在基座1底板上设置的螺钉孔的数量，可以在提高基座1机械强度的同时还降低断路器生产的成本。
具体的，燕尾槽11的槽口朝向水平方向，其中燕尾槽11在靠近基座1侧 壁上缘的一侧敞开设置，以便从该侧将燕尾筋21推入燕尾槽11，并通过安装在基座1上方盖板的侧壁封闭该侧。在燕尾筋21安装于燕尾槽11中后，通过燕尾筋21与燕尾槽11之间面联接的紧密配合来将线路板罩壳2内接固定在基座1中，并将线路板模块罩在线路板罩壳2的腔体22内。具体装配时，将燕尾筋21对准燕尾槽11、线路报罩壳2的腔体22对准基座1内的线路板模块，将线路板罩壳2由上至下的推入至基座1内，使燕尾筋21插入到燕尾槽11中相互配合，同时将线路板罩壳2套在线路板模块四周。当然，将燕尾槽11设计在线路板罩壳上，燕尾筋21设置在基座1侧壁上属于本实施例等同的方案，也可以达到相同的目的。
优选的，本实施例中燕尾筋21和燕尾槽11在基座1底板的水平方向上的截面形状均采用等腰梯形结构，使得燕尾筋21和燕尾槽11具有加工更方便且精度要求低的优点，此外还可以使燕尾筋21和燕尾槽11的受力更均匀，工作更可靠且寿命更高。在具体实现时，作为本实用新型的其它实施例，燕尾筋21和燕尾槽11在基座1底板的水平方向上的截面形状也可以采用其它的梯形或类梯形结构，例如十字型结构，或例如T型结构，这里不做具体限定。
本实施例中，在线路板罩壳2侧壁外侧上燕尾筋21的数量可以是多个，例如在线路板罩壳2的一个侧壁外侧沿基座1底板水平方向并列的设置两个燕尾筋21，同时在基座1侧壁的内侧上缘设置与燕尾筋21相配合的数量相同的燕尾槽11。另外，作为另一具体实施例，还可以在基座1侧壁的内侧上缘预设置多个与燕尾筋21非一一对应的燕尾槽11，基座1侧壁内侧上设有一个与多个燕尾筋21配合的燕尾槽11，因此可以根据具体需要来选择线路板罩壳2安装在哪个燕尾槽11中以调整线路板罩壳2的安装位置。这里对于燕尾筋21和燕尾槽11的数量不做具体限定。
如图1-3所示，所述线路板罩壳2为方形的结构，例如正方体或长方体，其一侧向外敞开设置在内部形成所述用于容置线路板模块的腔体22。所述燕尾槽11与基座1底板之间留有一定的距离，并且燕尾筋21与所述线路板罩壳2为一体加工成型，因此可以保证线路板罩壳2更牢靠的固定在基座1侧壁的内侧，提供更佳的保护效果。所述燕尾槽11和燕尾筋21相配合时，所述线路板罩壳2设有燕尾槽11的侧壁外侧与基座1侧壁内侧形成面联接，因此可使线路板罩壳 2更稳定的内接在基座1侧壁的内侧上。
另外，作为另一具体实施例(图中未示出)，在断路器的基座1侧壁内侧的上缘和断路器的盖板侧壁内侧的下缘分别对称设置第一燕尾槽和第二燕尾槽，当盖板盖合在基座1上时，第一燕尾槽与第二燕尾槽的槽口处相互连接。实际工作时，燕尾筋21的形状与第一燕尾槽和第二燕尾槽连接时的槽内空间整体形状相同，且同时分别与第一燕尾槽和第二燕尾槽配合，通过第一燕尾槽和第二燕尾槽的设置不仅可以提高线路板罩壳2在基座1中固定的稳定性，线路板罩壳2上的燕尾筋21在安装盖板时还可以起到导向和预定位的作用。这里对于燕尾筋21和燕尾槽11的数量不做具体限定。
如图4-6所示，本实用新型断路器的基座上的接线装配结构，在基座1的接线端的正面设置第一沉孔31，在基座1的接线端的底面设置环形的第二沉孔32，其中在第一沉孔31和第二沉孔32之间形成中空的凸台3a，第一沉孔31位于凸台3a上，当断路器用于板前接线时，端子螺钉置于第一沉孔31内进行电气绝缘；当断路器用于板后接线时，通过外力作用使凸台3a脱落，并通过将端子螺钉置于第二沉孔32内进行电气绝缘。通过第一沉孔31、第二沉孔32和凸台3a的设置，使本实用新型的断路器可以同时满足板前接线和板后接线的需求，此外，还具有降低成本、方便装配的优点，另外，还有助于减少库存的备料。
具体的，所述第一沉孔31采用轴向截面为圆形的结构，环形的第二沉孔32与其相对的设置在基座1的底面并围绕在第一沉孔31圆周壁的外侧，同时，在第一沉孔31与第二沉孔32之间形成用于容置和绝缘端子螺钉的凸台3a。其中，第二沉孔32水平截面为圆环形，在轴向截面为“凵”字形，凸台3a的高度小于第二沉孔32孔内的高度，可以避免在安装或者调试过程中由于操作不当使凸台3a脱落。
如图4-6所示，在基座1的接线端的正面，第一沉孔31和第二沉孔32之间还设有便于凸台3a脱落的环形的第四沉孔34，通过第四沉孔34的设置，可以在保证连接部3b结构强度的同时，避免因第一沉孔31的脱落而拉破其它组织结构面，并且可以避免第一沉孔31脱落时在连接部3b位置产生毛刺和菱角。基座1还包括设置在接线端正面的圆形的第三沉孔33，并将所述第一沉孔31设置在第三沉孔33内，在第三沉孔33与第一沉孔31之间形成台阶面用于容置端 子螺母；第四沉孔34设置在第三沉孔内，位于第三沉孔33与第一沉孔31之间台阶面的根部。通过第三沉孔33的设置，第三沉孔33与所述第二沉孔32之间形成连接部3b，连接部3b在凸台3a与基座1之间因此，当凸台3a在外力敲击后会沿连接部3b的位置脱落，另外，通过连接部3b的设置，方便控制凸台3a在脱落时所需的最小外力。
需要说明的是，本实施例中为方便加工成型，因此上述沉孔均为同轴设置的圆形，但在具体实现时，根据实际工作的需要，上述沉孔还可以选择其它的结构和设置方式，例如所述第三沉孔33采用轴向截面为与端子螺母相配合的正六边形形状，这里不做具体的限定。
具体的，结合6图，所述第一沉孔31垂直于轴向的截面为圆形，所述第二沉孔32垂直于轴向的截面为圆环形，所述第一沉孔31和第二沉孔32同轴设置；所述第三沉孔33垂直于轴向的截面为圆形，并与所述第一沉孔31同轴设置；所述第四沉孔34垂直于轴向的截面为圆环形，并与所述第三沉孔33同轴设置。本实施例中所述第二沉孔32外壁的内径R2大于第三沉孔33的内径r3、第二沉孔32内壁的外径r2小于第三沉孔33的内径r3，因此可以保证在第二沉孔32与第三沉孔33之间形成具有合理结构的连接部3b，另外，所述第四沉孔34外壁的内径R4等于第一沉孔31的内径r1、第四沉孔34内壁的外径r4大于第一沉孔的内径r1，因此，第四沉孔34在第一沉孔31脱落时可以起到更好的保护效果。
优选的，本实施例中的凸台3b的壁厚为0.75mm-1.00mm，因此可以在减少本实用新型断路器重量的同时，还可以保证凸台3a的绝缘性能。所述凸台3a的轴向截面为等腰梯形，由基座1的接线端的正面向反面方向直径逐渐缩小，方便将凸台3a敲落；所述第一沉孔31的轴向截面为等腰梯形，由基座1的接线端的正面向反面方向直径逐渐缩小。
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。

Claims (10)

  1. 一种断路器，包括基座(1)和盖板，其特征在于：在基座(1)的接线端的正面设置第一沉孔(31)，在基座(1)接线端的底面设置环形的第二沉孔(32)，其中在第一沉孔(31)和第二沉孔(32)之间形成中空的凸台(3a)，第一沉孔(31)位于凸台(3a)上，当断路器用于板前接线时，端子螺钉置于第一沉孔(31)内进行电气绝缘；当断路器用于板后接线时，通过外力作用使凸台(3a)脱落，并通过将端子螺钉置于第二沉孔(32)内进行电气绝缘。
  2. 根据权利要求1所述的断路器，其特征在于：在基座(1)的接线端的正面，第一沉孔(31)和第二沉孔(32)之间还设有便于凸台(3a)脱落的环形的第四沉孔(34)。
  3. 根据权利要求1所述的断路器，其特征在于：基座(1)还包括设置在接线端正面的第三沉孔(33)，第三沉孔(33)与所述第二沉孔(32)之间形成连接部(3b)，第一沉孔(31)设置在第三沉孔(33)内，在第三沉孔(33)与第一沉孔(31)之间形成台阶面。
  4. 根据权利要求3所述的断路器，其特征在于：在所述第三沉孔(33)内设有便于凸台(3a)脱落的环形的第四沉孔(34)，第四沉孔(34)位于第三沉孔(33)与第一沉孔(31)之间台阶面的根部。
  5. 根据权利要求1所述的断路器，其特征在于：所述第一沉孔(31)和第二沉孔(32)之间的凸台(3a)的壁厚为0.75mm-1.0mm。
  6. 根据权利要求1所述的断路器，其特征在于：所述第二沉孔(32)的轴向截面为“ㄩ”字形，所述凸台(3a)的高度小于第二沉孔(32)的孔内高度。
  7. 根据权利要求6所述的断路器，其特征在于：所述凸台(3a)的轴向截面为等腰梯形，由基座(1)的接线端的正面向反面方向直径逐渐缩小。
  8. 根据权利要求1或7所述的断路器，其特征在于：所述第一沉孔(31)的轴向截面为等腰梯形，由基座(1)的接线端的正面向反面方向直径逐渐缩小。
  9. 根据权利要求4所述的断路器，其特征在于：所述第一沉孔(31)垂直于轴向的截面为圆形，所述第二沉孔(32)垂直于轴向的截面为圆环形，所述第一沉孔(31)和第二沉孔(32)同轴设置；所述第三沉孔(33)垂直于轴向 的截面为圆形，并与所述第一沉孔(31)同轴设置；所述第四沉孔(34)垂直于轴向的截面为圆环形，并与所述第三沉孔(33)同轴设置。
  10. 根据权利要求9所述的断路器，其特征在于：所述第二沉孔(32)外壁的内径R2大于第三沉孔(33)的内径r3、第二沉孔(32)内壁的外径r2小于第三沉孔(33)的内径r3；所述第四沉孔(34)外壁的内径R4等于第一沉孔(31)的内径r1、第四沉孔(34)内壁的外径r4大于第一沉孔的内径r1。
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