WO2018227939A1 - 接地端子、接地本体、接地结构及家用电器 - Google Patents

接地端子、接地本体、接地结构及家用电器 Download PDF

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Publication number
WO2018227939A1
WO2018227939A1 PCT/CN2017/119914 CN2017119914W WO2018227939A1 WO 2018227939 A1 WO2018227939 A1 WO 2018227939A1 CN 2017119914 W CN2017119914 W CN 2017119914W WO 2018227939 A1 WO2018227939 A1 WO 2018227939A1
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WIPO (PCT)
Prior art keywords
grounding
screw
terminal
flange hole
ground
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Ceased
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PCT/CN2017/119914
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English (en)
French (fr)
Inventor
黄俊郁
尹小亮
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Publication of WO2018227939A1 publication Critical patent/WO2018227939A1/zh
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    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • the invention relates to the field of household appliances.
  • the present invention relates to a ground structure.
  • the invention also relates to a household appliance having the grounding structure.
  • the invention relates to a ground terminal and a grounded body.
  • FIG. 1 An existing grounding structure is shown in FIG. 1 , which includes a screw 3 ′, a spring washer 5 ′, a grounding terminal 1 ′, a grounding body 2 ′ (ie, a metal casing), and the grounding body 2 ′ is flanged toward The lower side (ie, the direction away from the grounding terminal 1') of the flange hole 6', the screw 3' is mounted to the grounding body 2' via the spring washer 5', the screw 3' is self-flanging hole 6' The side on which the upper ground terminal 1' is mounted passes through the flange of the flange hole 6' and is connected to the screw 3' through the flange to fix the ground terminal 1' and the grounding body 2'.
  • FIG. 2 Another existing grounding structure is shown in FIG. 2, which differs from the first grounding structure in that the flange hole 6' on the grounding body 2' is changed into a through hole 7', and the grounding body 2'
  • the side of the flange of the upper flange hole 6' is provided with a nut 8' that cooperates with the screw 3'.
  • the present invention provides a grounding structure that can have a reduced number of components.
  • an aspect of the present invention provides a grounding structure including a grounding terminal, a grounding body, and a screw for electrically connecting the grounding terminal to the grounding body, the grounding terminal being provided with a first flanged hole
  • the screw can pass through the grounding body and be screwed to the first flange hole to be connected such that the nut of the screw and the grounding terminal respectively abut against two sides of the grounding body.
  • the inner hole wall of the first flange hole is provided with a thread for screwing the screw.
  • the ground terminal is provided with a protrusion on a side facing the ground body.
  • the first flange hole extends from the connection end in a direction away from the ground body.
  • the protrusions are a plurality of mutually separated, extending in a circumferential direction surrounding the first flange hole and having an inclined surface facing one side of the ground body, the inclined surface having abutting against the ground The edge of the body.
  • the projection is located at a peripheral edge of the connecting end.
  • an end of the first flange hole facing the ground body is formed with an inner chamfer.
  • a side of the grounding body facing away from the grounding terminal is formed with a second flange hole, the screw being connectable to pass through the second flange hole and causing the nut to abut the second The free end of the flanged hole.
  • Another object of the present invention is to provide a home appliance including any of the above-described grounding structures.
  • Another object of the present invention is to provide a ground terminal that is suitable for use in the above-described ground structure.
  • another aspect of the present invention provides a ground terminal provided with a first flange hole for screwing to a screw to enable the screw to pass through the ground body and screwed thereto
  • the grounding terminal is electrically connected to the grounding body, and is connected such that a nut of the screw and the grounding terminal respectively abut against two sides of the grounding body.
  • Another object of the present invention is to provide a grounding body, wherein the grounding body is formed with a second flanged hole, so as to be able to connect the grounding terminal through a screw passing through the second flanged hole, and is connected such that the screw The nut abuts against the free end of the second flange hole, and the ground terminal abuts against the other side of the ground body.
  • the grounding terminal and the nut can be respectively disposed on both sides of the grounding body, thereby facilitating reduction of parts;
  • the first flanged hole with internal thread on the grounding terminal replaces the nut matched with the screw in the prior art, and the protrusion on the grounding terminal replaces the spring washer in the prior art, so that the number of parts of the entire grounding structure is reduced.
  • the material cost is reduced and the coating on the grounding body can be worn away by the nut during the process of connecting the screw to the grounding terminal;
  • the second flange hole is disposed on the grounding body. During the process of rotating the screw, the nut of the screw and the free end of the second flange hole are rubbed. The friction is more targeted against the plane of the nut that rubs the entire ground body. Sex, in addition to the coating effect is better.
  • FIG. 1 is a schematic view of a first grounding structure mentioned in the background art
  • FIG. 2 is a schematic view of a second ground structure mentioned in the background art
  • FIG. 3 is a structural view of a ground terminal in a preferred embodiment
  • FIG. 4 is a structural view of another perspective view of the ground terminal depicted in FIG. 3;
  • Figure 5 is another perspective view of the grounding terminal for showing the position where the first flanged hole is disposed
  • Figure 6 is a partial structural view of the grounding body
  • Figure 7 is a schematic exploded view of the assembled structure of the ground structure.
  • orientation words such as “up, down, left, and right” as used generally refer to the upper, lower, left, and right as shown in the accompanying drawings; "inside and outside”, unless otherwise specified. It refers to the inside and outside of the contour of each component itself.
  • a grounding structure includes a grounding terminal 1, a grounding body 2, and a screw 3 that sequentially passes through the grounding body 2 and the grounding terminal 1 and is screwed to the grounding terminal 1. .
  • the screw 3 generally includes a nut 30 that abuts against the grounding body 2 and a screw 31 that passes through the grounding body 2 and has an external thread. Therefore, since the present invention connects the ground terminal 1 and the nut 30 of the screw 3 to abut against the two sides of the grounding body 2, the nut and the like can be omitted, and the nut 30 can be utilized in the process of connecting the screw 3 The surface coating is removed by friction between the rotating body and the grounding body 2, which is convenient for improving production efficiency and material cost.
  • the above-mentioned ground terminal 1 may include a connection end 10 electrically connected to the ground body 2, and a lead end 11 to which the ground line 4 is connected.
  • a first flange hole 102 is formed on the connecting end 10. The free end of the first flange hole 102 extends away from the ground body 2, and the inner hole wall of the first flange hole 102 may be provided with a thread 101.
  • the connection end 10 and the lead end 11 of the ground terminal 1 have a small thickness in order to provide the structure or the like of the wound ground wire 4. In this case, the ground terminal 1 of the conventional structure cannot be connected to the screw 3 instead of the nut as described above.
  • the present invention enhances the effective connection of the ground terminal 1 and the screw 3 by providing the first flange hole 102 on the ground terminal 1, whereby the ground terminal 1 can be disposed on the ground body 2 opposite to the nut 30 of the screw 3. One side, so that the nut 30 can directly contact and rub the ground body 2.
  • the thread 101 is not limited to a processing form in which the thread is previously tapped on the inner wall of the first flange hole 102, and the screw 3 can also be selected as a self-tapping screw, whereby the tapping screw During the screwing installation, the relative rotation of the screw 31 and the inner hole wall of the first flange hole 102 is utilized to form a thread 101 on the inner wall of the first flange hole 102.
  • an end of the first flanged hole 102 facing the grounding body 2 is further provided with an inner chamfer 104.
  • a protrusion 100 is disposed on a side of the connecting end 10 against the grounding body 2, and the number of the protrusions 100 is not limited to four as shown in FIG. 3 to FIG. 5, and the number thereof may be one or more, each convex
  • the circumference of the protrusion 100 is disposed in a circumferential direction of the first flange hole 102, and is inclined from a low to a high direction in a direction surrounding the first flange hole 102.
  • the extended end of the protrusion 100 is formed with an edge abutting against the ground body 2.
  • Side 103 is disposed on a side of the connecting end 10 against the grounding body 2
  • the number of the protrusions 100 is not limited to four as shown in FIG. 3 to FIG. 5, and the number thereof may be one or more, each convex
  • the circumference of the protrusion 100 is disposed in a circumferential direction of the first flange hole 102, and is inclined from a low to a high direction in a direction
  • the edge 103 can be compression-deformed to generate a pre-tightening force in the axial direction of the first flange hole 102, preventing the screw 3 from loosening.
  • the spring washer can be omitted, further reducing the number of parts of the ground structure.
  • the projections 100 should be disposed at the outer peripheral edge of the connecting end 10.
  • the connecting end 10 is provided with a first flange hole 102, and the protrusion 100 is arranged at the outer peripheral edge, so that the protrusion 100 can be arranged to have a larger size, thereby being able to provide a large elastic force by being compressed and deformed instead of the spring.
  • the gasket produces a preload.
  • a side of the grounding body 2 disposed away from the grounding terminal 1 is provided with a second flanged hole 20.
  • the free end of the second flange hole 20 (the free end here is understood to be the flange of the second flange hole 20) is disposed away from the connection position of the ground terminal 1.
  • the lower side of the nut 30 can be rubbed against the flange end of the second flanged hole 20, thereby removing the insulating coating on the grounding body 2, thereby facilitating the grounding terminal 1 and grounding. Electrical connection between the bodies 3.
  • the grounding body 2 may be a metal casing of a household appliance such as a galvanized sheet, such as a metal casing of a microwave oven.
  • the grounding structure described in this embodiment is used in a metal casing of a household appliance, thereby reducing the grounding structure of the metal casing.
  • the number of parts Moreover, during the screwing of the screw 3 to the first flange hole 102 on the ground terminal 1, the nut 30 rubs against the upper edge of the second flange hole 20, which is similar to the removal of the metal casing. Layer operation.
  • grounding body is mainly described in a connected state
  • grounding structure of the present invention may be in an unassembled component state as long as its parts can correspond to the respective technologies defined by the technical solutions of the present invention.
  • Features are all within the scope of protection of the present invention.
  • the present invention provides a home appliance such as a microwave oven or the like having the above-described grounding structure provided by the present invention.

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  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

一种接地结构包括接地端子(1)、接地本体(2)以及用于将接地端子(1)电连接至接地本体(2)的螺钉(3)，接地端子(1)设置有第一翻边孔(102)，螺钉(3)能够穿过接地本体(2)并螺接于第一翻边孔(102)，以便螺钉(3)的螺帽(30)和接地端子(1)分别抵靠于接地本体(2)的两侧连接。该接地结构通过在接地端子(1)上设置第一翻边孔(102)，将该接地端子(1)和螺帽(30)分别设置在接地本体(2)的两侧，便于减少零件。还涉及一种接地端子(1)、接地本体(2)以及家用电器。

Description

接地端子、接地本体、接地结构及家用电器 技术领域
本发明涉及家用电器领域。具体地，本发明涉及一种接地结构。在此基础上，本发明还涉及一种具有该接地结构的家用电器。此外，本发明还涉及一种接地端子和接地本体。
背景技术
类似于微波炉等具有金属外壳的家用电器，其金属外壳等需要接地。一种现有的接地结构如附图1所示，其包括螺钉3’、弹簧垫圈5’、接地端子1’、接地本体2’(即金属外壳)，接地本体2’上开有凸缘朝下(即，远离接地端子1’的方向)的翻边孔6’，螺钉3’隔着弹簧垫圈5’将接地端子1’安装于接地本体2’上，螺钉3’自翻边孔6’上接地端子1’所安装的一侧穿出翻边孔6’的凸缘，并通过该凸缘与螺钉3’连接以固定接地端子1’与接地本体2’。
另一种现有的接地结构如附图2所示，其与第一种接地结构的区别在于：将接地本体2’上的翻边孔6’变为通孔7’，在接地本体2’上原翻边孔6’的凸缘所在的一侧设置与螺钉3’配合的螺母8’。
上述两种接地结构存在的共同问题为：零件较小且数量较多，导致生产效率较低，材料成本较高。
发明内容
本发明提供一种接地结构，其可以具有较少的零部件数量。
为了实现上述目的，本发明一方面提供一种接地结构，包括接地端子、接地本体以及用于将所述接地端子电连接至所述接地本体的螺钉，所述接 地端子设置有第一翻边孔，所述螺钉能够穿过所述接地本体并螺接于所述第一翻边孔，以连接为使得所述螺钉的螺帽和所述接地端子分别抵靠于所述接地本体的两侧。
优选地，所述第一翻边孔的内孔壁上设置有用于螺接所述螺钉的螺纹。
优选地，所述接地端子在朝向所述接地本体的一侧设置有凸起。
优选地，所述第一翻边孔从所述连接端向远离所述接地本体的方向延伸。
优选地，所述凸起为相互分开的多个，沿环绕所述第一翻边孔的周向延伸并具有朝向所述接地本体一侧的倾斜面，该倾斜面具有抵靠于所述接地本体的棱边。
优选地，所述凸起位于所述连接端的外周边缘。
优选地，所述第一翻边孔的朝向所述接地本体的一端形成有内倒角。
优选地，所述接地本体的背离所述接地端子的一侧形成有第二翻边孔，所述螺钉能够连接为穿过该第二翻边孔并使得所述螺帽抵靠于该第二翻边孔的自由端。
本发明的另一目的在于提供一种家用电器，该家用电器包括上述的任意一种接地结构。
本发明的另一目的在于提供一种接地端子，其适用于上述的接地结构中。
为了实现上述目的，本发明另一方面提供一种接地端子，所述接地端子设置有用于螺接于螺钉的第一翻边孔，以能够通过使得所述螺钉穿过接地本体并螺接于所述第一翻边孔而将所述接地端子电连接至所述接地本体，并连接为使得所述螺钉的螺帽和所述接地端子分别抵靠于所述接地本体的两侧。
本发明的另一目的在于提供一种接地本体，所述接地本体上形成有第二翻边孔，以能够通过穿过该第二翻边孔的螺钉连接接地端子，并连接为 使得该螺钉的螺帽抵靠于所述第二翻边孔的自由端，所述接地端子抵靠于所述接地本体的另一侧。
本发明的有益效果如下：
1、通过在接地端子上设置第一翻边孔，由此可以将该接地端子和螺帽分别设置在接地本体两侧，便于减少零件；
2、接地端子上的具有内螺纹的第一翻边孔取代现有技术中与螺钉配合的螺母，接地端子上的凸起取代现有技术中的弹簧垫圈，如此，整个接地结构零件数量减少，材料成本降低，并能够在将螺钉连接至接地端子中的过程中利用其螺帽磨掉接地本体上的涂层；
3、接地本体上设置第二翻边孔，旋转螺钉的过程中，螺钉的螺帽与第二翻边孔的自由端发生摩擦，这种摩擦相对于螺帽摩擦整个接地本体的平面更加具有针对性，除涂层效果更佳。
附图说明
图1为背景技术中提及的第一种接地结构示意图；
图2为背景技术中提及的第二种接地结构示意图；
图3为一种优选实施方式下的接地端子的结构视图；
图4为图3中描述的接地端子的另一视角的结构视图；
图5是为显示第一翻边孔设置位置而做的接地端子的另一视角视图；
图6为接地本体的局部结构视图；
图7为接地结构的装配结构爆炸示意图。
具体实施方式
在本发明中，在未作特别说明的情况下，使用的方位词如“上、下、左、右”通常是指参考附图所示的上、下、左、右；“内、外”是指相对于各部件本身的轮廓的内、外。
如图7中所示，根据本发明一种优选实施方式的接地结构，包括有接地端子1、接地本体2，以及依次穿过接地本体2和接地端子1并与接地端子1螺接的螺钉3。
其中，螺钉3通常包括抵靠接地本体2的螺帽30以及用于穿过接地本体2且具有外螺纹的螺杆31。从而，由于本发明将接地端子1和螺钉3的螺帽30连接为分别抵靠在接地本体2的两侧，可以省去螺母等部件，并在连接螺钉3的过程中能够利用螺帽30在旋转时与接地本体2之间的摩擦而去除表面涂层，便于提高生产效率、节约材料成本。
如图3至图5中所示，上述的接地端子1可以包括与接地本体2电连接的连接端10，以及连接有地线4的引出端11。连接端10上形成有第一翻边孔102，该第一翻边孔102的自由端背离接地本体2延伸，且第一翻边孔102的内孔壁上可以设置有螺纹101。通常地，接地端子1的连接端10和引出端11具有较小的厚度，以便设置卷绕地线4的结构等。在此情形下，传统结构的接地端子1并不能够如上述地替代螺母与螺钉3连接。本发明通过在接地端子1上设置第一翻边孔102，增强了接地端子1与螺钉3的有效连接，由此能够将接地端子1设置在接地本体2上与螺钉3的螺帽30相对的一侧，以使螺帽30能够直接接触并摩擦接地本体2。
应当指出的是，螺纹101不局限于预先在第一翻边孔102的内孔壁上攻丝这一种加工形式，也可以通过将螺钉3选为自攻螺钉，由此，在自攻螺钉旋进安装过程中利用螺杆31与第一翻边孔102的内孔壁的相对转动，在第一翻边孔102的内孔壁上形成螺纹101。
为便于将螺钉3连接至接地端子1，第一翻边孔102的朝向接地本体2的一端还设置有内倒角104。
连接端10的抵靠接地本体2的一侧上设有凸起100，凸起100的数量不局限于图3至图5中所示的四个，其数量可以是一个或多个，各个凸起100环绕设置于第一翻边孔102的圆周方向，且在环绕第一翻边孔102的方 向自低至高倾斜设置，如此，凸起100的延伸末端形成有抵靠于接地本体2的棱边103。由此，在将接地端子1连接至接地本体2时，该棱边103能够被压缩变形，以产生沿第一翻边孔102轴向的预紧力，防止螺钉3松动。在这种优选实施方式下，可以省去弹簧垫圈，进一步减少接地结构的零件数量。
并且，作为一种优选地实现形式，凸起100应布置于连接端10的外周边缘。连接端10上设置有第一翻边孔102，将凸起100布置于外周边缘，可以使凸起100布置为具有更大的尺寸，由此能够通过被压缩变形而提供较大弹力，替代弹簧垫圈产生预紧作用。
优选地，如图6中所示，接地本体2上背向接地端子1设置的一侧设置有第二翻边孔20。结合图6与图7，第二翻边孔20的自由端(此处的自由端理解为第二翻边孔20的凸缘)背离接地端子1的连接位置设置。螺钉3与接地端子1相对旋转过程中能够使得螺帽30的下侧面摩擦第二翻边孔20的凸缘端部，由此去除接地本体2上的绝缘涂层，便于实现接地端子1与接地本体3之间的电连接。
接地本体2可以是如镀锌板一类的家用电器的金属外壳，如微波炉的金属外壳，将本实施例描述的接地结构用在家用电器的金属外壳，即可减少金属外壳的接地结构的零部件数量。并且，在转动螺钉3至其与接地端子1上的第一翻边孔102螺接的过程中，螺帽30摩擦第二翻边孔20的上边缘，这个过程类似于金属外壳上的除涂层操作。应当理解的是，尽管在上述说明中主要以接地本体处于连接状态进行描述，但本发明的接地结构可以为未组装的散件状态，只要其各部分能够对应于本发明技术方案限定的各个技术特征，均属于本发明的保护范围。
此外，本发明还提供一种家用电器，如微波炉等，该家用电器具有本发明提供的上述接地结构。
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不 限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型。但这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。

Claims (11)

  1. 一种接地结构，包括接地端子(1)、接地本体(2)以及用于将所述接地端子(1)电连接至所述接地本体(2)的螺钉(3)，其特征是，所述接地端子(1)设置有第一翻边孔(102)，所述螺钉(3)能够穿过所述接地本体(2)并螺接于所述第一翻边孔(102)，以连接为使得所述螺钉(3)的螺帽(30)和所述接地端子(1)分别抵靠于所述接地本体(2)的两侧。
  2. 根据权利要求1所述的接地结构，其特征是，所述第一翻边孔(102)的内孔壁上设置有用于螺接所述螺钉(3)的螺纹(101)。
  3. 根据权利要求1所述的接地结构，其特征是，所述接地端子(1)在朝向所述接地本体(2)的一侧设置有凸起(100)。
  4. 根据权利要求3所述的接地结构，其特征是，所述第一翻边孔(102)从所述连接端(10)向远离所述接地本体(2)的方向延伸。
  5. 根据权利要求3所述的接地结构，其特征是，所述凸起(100)为相互分开的多个，沿环绕所述第一翻边孔(102)的周向延伸并具有朝向所述接地本体(2)一侧的倾斜面，该倾斜面具有抵靠于所述接地本体(2)的棱边(103)。
  6. 根据权利要求5所述的接地结构，其特征是，所述凸起(100)位于所述连接端(10)的外周边缘。
  7. 根据权利要求1所述的接地结构，其特征是，所述第一翻边孔(102)的朝向所述接地本体(2)的一端形成有内倒角(104)。
  8. 根据权利要求1-7中任意一项所述的接地结构，其特征是，所述接地本体(2)的背离所述接地端子(1)的一侧形成有第二翻边孔(20)，所述螺钉(3)能够连接为穿过该第二翻边孔(20)并使得所述螺帽(30)抵靠于该第二翻边孔(20)的自由端。
  9. 一种家用电器，其特征是，该家用电器包括根据权利要求1-8中任意一项所述的接地结构。
  10. 一种接地端子，其特征是，所述接地端子(1)设置有用于螺接于螺钉(3)的第一翻边孔(102)，以能够通过使得所述螺钉(3)穿过接地本体(2)并螺接于所述第一翻边孔(102)而将所述接地端子(1)电连接至所述接地本体(2)，并连接为使得所述螺钉(3)的螺帽(30)和所述接地端子(1)分别抵靠于所述接地本体(2)的两侧。
  11. 一种接地本体，其特征是，所述接地本体(2)上形成有第二翻边孔(20)，以能够通过穿过该第二翻边孔(20)的螺钉(3)连接接地端子(1)，并连接为使得该螺钉(3)的螺帽(30)抵靠于所述第二翻边孔(20)的自由端，所述接地端子(1)抵靠于所述接地本体(2)的另一侧。
PCT/CN2017/119914 2017-06-13 2017-12-29 接地端子、接地本体、接地结构及家用电器 Ceased WO2018227939A1 (zh)

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