CN103187213B - Movement mechanism of thermal overload relay - Google Patents
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Abstract
本发明公开了一种过载继电器的动作机构，包括叶片，和与所述叶片的底部固定连接的刚性支撑；双金属元件在过载电流作用下弯曲变形，经传动机构推动所述叶片跳转，从而带动继电器触头，所述刚性支撑包括第一、第二端，所述刚性支撑上还设有转轴组件中的第一分件，所述第一分件位于所述第一、第二端之间，且为刚性支撑的转动支点，所述第一端连接施力件，该施力件对刚性支撑产生第一力矩，所述第二端连接弹性元件，该弹性元件对刚性支撑产生补偿第一力矩的第二力矩。叶片的刚性支撑与壳体间的装配通过转轴约束，有效达到装配防呆目的。叶片组件不受影响装配的外力作用，装配过程顺畅。
The invention discloses an operating mechanism of an overload relay, which includes a blade and a rigid support fixedly connected to the bottom of the blade; a bimetal element is bent and deformed under the action of an overload current, and the blade is pushed to jump through a transmission mechanism, thereby To drive the relay contacts, the rigid support includes first and second ends, and the rigid support is also provided with a first part in the shaft assembly, and the first part is located between the first and second ends between, and is the fulcrum of the rigid support, the first end is connected to the force applying member, and the force applying member generates the first moment to the rigid support; the second end is connected to the elastic element, and the elastic element generates the first compensation to the rigid support. The second moment of the first moment. The assembly between the rigid support of the blade and the shell is constrained by the rotating shaft, which effectively achieves the purpose of foolproof assembly. The blade assembly is not affected by the external force of the assembly, and the assembly process is smooth.
Description
技术领域 technical field
本发明属于继电器领域，具体说涉及一种热过载继电器的动作机构。The invention belongs to the field of relays, and in particular relates to an action mechanism of a thermal overload relay.
背景技术 Background technique
热过载继电器是由流入热元件的电流产生热量，使有不同膨胀系数的双金属元件发生形变，当形变达到一定距离时，就推动连杆动作，使控制电路断开，实现过载保护。这类继电器的动作机构，一般叶片有两个稳定的停止位置，弹性叶片在两个停止位之间的转换是突然的。叶片的刚性支撑固定或限位在继电器的壳体上，叶片直接或间接带动触头动作。The thermal overload relay generates heat from the current flowing into the heating element, which causes the bimetal elements with different expansion coefficients to deform. When the deformation reaches a certain distance, it pushes the connecting rod to disconnect the control circuit and realize overload protection. The action mechanism of this type of relay generally has two stable stop positions for the blade, and the switch between the two stop positions of the elastic blade is sudden. The rigid support of the blade is fixed or limited on the housing of the relay, and the blade directly or indirectly drives the contact to move.
上述动作机构在公开号为FR1274608A的法国发明申请、公开号EP0360215A2的欧洲发明申请，及公告号为CN1192405C的中国授权发明专利中均有描述。The above-mentioned action mechanism is described in French invention application with publication number FR1274608A, European invention application with publication number EP0360215A2, and Chinese authorized invention patent with publication number CN1192405C.
其中中国发明专利CN1192405C涉及了一种设置有弹性叶片机构的热动继电器，叶片底部连接刚性支撑的一端，刚性支撑的另一端有停靠点，可以在壳体的固定跨接件上转动。刚性支撑上还连接有调节元件，该调节元件有凸轮表面，通过该调节元件作用，可以使刚性支撑和叶片一起绕由跨接件和停靠点确定的转轴转动，来调整叶片顶部的位置。在此方案中，叶片组件受其弹性尾部支脚影响，与壳体的装配过程不够顺畅，影响装配效率，另外，刚性支撑与壳体在转动点的装配也不具有防呆措施(确保装配到位)，因此有必要考虑新的机构方案。Among them, the Chinese invention patent CN1192405C relates to a thermal relay provided with an elastic blade mechanism. The bottom of the blade is connected to one end of a rigid support, and the other end of the rigid support has a stop point, which can be rotated on a fixed bridge member of the housing. An adjustment element is also connected to the rigid support, and the adjustment element has a cam surface. Through the action of the adjustment element, the rigid support and the blade can rotate around the rotation axis determined by the bridge piece and the stop point to adjust the position of the top of the blade. In this solution, the blade assembly is affected by its elastic tail feet, and the assembly process with the shell is not smooth enough, which affects the assembly efficiency. In addition, the assembly of the rigid support and the shell at the rotation point does not have fool-proof measures (to ensure that the assembly is in place) , so it is necessary to consider new institutional schemes.
发明内容 Contents of the invention
本发明要解决的技术问题是提供一种热过载继电器的动作机构，方便生产过程中叶片组件在产品上的装配，使叶片组件与壳体间的装配具有防呆效果。The technical problem to be solved by the present invention is to provide an action mechanism of a thermal overload relay, which facilitates the assembly of the blade assembly on the product during the production process, and makes the assembly between the blade assembly and the housing have a fool-proof effect.
本发明采用以下技术方案：The present invention adopts following technical scheme:
一种热过载继电器的动作机构，包括叶片，和与所述叶片底部固定连接的刚性支撑；双金属元件在过载电流作用下弯曲变形，经传动机构推动所述叶片跳转，从而带动继电器触头，所述刚性支撑包括第一、第二端，所述刚性支撑上还设有转轴组件中的第一分件，所述第一分件位于所述第一、第二端之间，且为刚性支撑的转动支点，所述第一端连接施力件，该施力件对刚性支撑产生第一力矩，所述第二端连接弹性元件，该弹性元件对刚性支撑产生补偿第一力矩的第二力矩。An action mechanism of a thermal overload relay, comprising a blade and a rigid support fixedly connected to the bottom of the blade; a bimetal element is bent and deformed under the action of an overload current, and the blade is pushed to jump through a transmission mechanism, thereby driving the relay contact , the rigid support includes first and second ends, the rigid support is also provided with a first sub-piece in the shaft assembly, the first sub-piece is located between the first and second ends, and is The fulcrum of the rigid support, the first end is connected to the force applying member, and the force applying member generates the first moment to the rigid support, and the second end is connected to the elastic element, and the elastic element generates the second moment to compensate the first moment on the rigid support Two moments.
进一步地，所述施力件为螺钉，当所述螺钉旋转，所述刚性支撑的第一端沿螺钉轴线运动。Further, the force applying member is a screw, and when the screw rotates, the first end of the rigid support moves along the axis of the screw.
优选地，所述刚性支撑的第一端设螺纹孔，所述螺钉在所述螺纹孔中，螺钉的末端顶在所述热过载继电器的壳体上。Preferably, the first end of the rigid support is provided with a threaded hole, the screw is in the threaded hole, and the end of the screw is pushed against the housing of the thermal overload relay.
优选地，所述热过载继电器的壳体设有螺纹孔，所述螺钉在所述螺纹孔中，螺钉的末端顶在所述刚性支撑的第一端上。Preferably, the housing of the thermal overload relay is provided with a threaded hole, the screw is in the threaded hole, and the end of the screw abuts against the first end of the rigid support.
进一步地，所述弹性元件为拉簧，所述拉簧一端与所述刚性支撑的第二端连接，拉簧的另一端固定在所述热过载继电器的壳体上。Further, the elastic element is a tension spring, one end of the tension spring is connected to the second end of the rigid support, and the other end of the tension spring is fixed on the housing of the thermal overload relay.
进一步地，所述热过载继电器的壳体上设有转轴组件中的第二分件，所述第一分件与所述第二分件配合。Further, the housing of the thermal overload relay is provided with a second sub-piece in the shaft assembly, and the first sub-piece cooperates with the second sub-piece.
优选地，所述第一分件为轴，且固定在刚性支撑上，所述第二分件为轴套。Preferably, the first component is a shaft and is fixed on a rigid support, and the second component is a shaft sleeve.
优选地，所述第一分件为轴套，且固定在刚性支撑上，所述第二分件为轴。Preferably, the first part is a shaft sleeve and is fixed on a rigid support, and the second part is a shaft.
进一步地，所述刚性支撑为L形，包括垂直部与水平部，所述第一端在所述垂直部上，而且所述叶片底部与垂直部固定；所述第二端在所述水平部上，而且所述转轴组件中的第一分件设在水平部上。Further, the rigid support is L-shaped, including a vertical part and a horizontal part, the first end is on the vertical part, and the bottom of the blade is fixed to the vertical part; the second end is on the horizontal part on, and the first part of the shaft assembly is arranged on the horizontal part.
叶片的刚性支撑与壳体间的装配通过转轴约束，有效达到装配防呆目的。叶片组件不受影响装配的外力作用，装配过程顺畅。The assembly between the rigid support of the blade and the shell is constrained by the rotating shaft, which effectively achieves the purpose of foolproof assembly. The blade assembly is not affected by the external force of the assembly, and the assembly process is smooth.
叶片的刚性支撑与壳体间有拉簧，以便对叶片组件提供顺时针的转动力矩，使叶片刚性支撑的底部通过螺钉压力作用在壳体上。There is a tension spring between the rigid support of the blade and the casing to provide a clockwise rotational moment to the blade assembly, so that the bottom of the rigid support of the blade acts on the casing through screw pressure.
附图说明 Description of drawings
图1为本发明涉及的热过载继电器的动作机构的结构示意图。Fig. 1 is a structural schematic diagram of the operating mechanism of the thermal overload relay involved in the present invention.
图2为本发明涉及的热过载继电器的动作机构中叶片组件(连同刚性支撑)的一种实施例的结构示意图。Fig. 2 is a structural schematic diagram of an embodiment of the blade assembly (together with the rigid support) in the action mechanism of the thermal overload relay according to the present invention.
图3为本发明涉及的热过载继电器的动作机构中施力件(螺钉)的一种实施例的结构示意图。Fig. 3 is a structural schematic diagram of an embodiment of a force applying member (screw) in the operating mechanism of the thermal overload relay according to the present invention.
图4为本发明涉及的热过载继电器的动作机构中施力件(螺钉)的另一种实施例的结构示意图。Fig. 4 is a structural schematic diagram of another embodiment of the force applying member (screw) in the operating mechanism of the thermal overload relay according to the present invention.
具体实施方式 Detailed ways
参见图1，为本发明涉及的热过载继电器的动作机构的结构示意图。所述动作机构设置在热过载继电器的壳体4内(图1中未示出完整的壳体)。Referring to FIG. 1 , it is a schematic structural diagram of the operating mechanism of the thermal overload relay involved in the present invention. The action mechanism is arranged in the housing 4 of the thermal overload relay (the complete housing is not shown in FIG. 1 ).
壳体4中设有双金属元件7、顶板组件6、杠杆组件12、叶片1、刚性支撑5、触头推杆8、和拍合式常开(NO)、常闭(NC)触头9、11。所述双金属元件7连接顶板组件6，所述顶板组件6还与杠杆组件12的一端连接。杠杆组件12绕支点A转动，杠杆组件12的另一端与叶片1中部的触点t接触。所述顶板组件6、杠杆组件12共同组成了传动机构。在图1中，顶板组件6为简化给出，通常包括上、下顶板和连接二者的杠杆，杠杆组件12也是简化给出，通常包括传动杠杆、一段用于环境温度补偿的双金属元件，此外还有改变动作间隙的调节旋钮。The housing 4 is provided with a bimetal element 7, a top plate assembly 6, a lever assembly 12, a blade 1, a rigid support 5, a contact push rod 8, and clap-on normally open (NO) and normally closed (NC) contacts 9, 11. The bimetal element 7 is connected to the top plate assembly 6 , and the top plate assembly 6 is also connected to one end of the lever assembly 12 . The lever assembly 12 rotates around the fulcrum A, and the other end of the lever assembly 12 is in contact with the contact point t in the middle of the blade 1 . The top plate assembly 6 and the lever assembly 12 together form a transmission mechanism. In Fig. 1, the top plate assembly 6 is shown for simplification, and generally includes upper and lower top plates and a lever connecting the two, and the lever assembly 12 is also shown for simplification, and usually includes a transmission lever, a section of bimetal element for ambient temperature compensation, In addition, there is an adjustment knob to change the action gap.
结合图1、图2，叶片1底部固定连接刚性支撑5，且没有弹性支脚。叶片1的中部设有与杠杆组件12发生接触的触点t。叶片1的顶部连接着触头推杆8。所述触头推杆8上还连接着常开触头9、常闭触头11。Referring to Figures 1 and 2, the bottom of the blade 1 is fixedly connected to the rigid support 5, and there is no elastic leg. The middle part of the blade 1 is provided with a contact point t which is in contact with the lever assembly 12 . The top of the blade 1 is connected with a contact push rod 8 . The normally open contact 9 and the normally closed contact 11 are also connected to the contact push rod 8 .
热过载继电器的工作过程如下：双金属元件7在过载电流的作用下弯曲变形，带动顶板组件6沿图1示X1的方向运动，这样使杠杆组件12绕支点A发生顺时针旋转，继而推动叶片1上的触点t，叶片1发生跳转，从图示实线位置挑到虚线所示位置，并带动触头推杆8沿X2方向运动，使常开触头9从实线为位置跳到虚线所示位置，发生闭合，使常闭触头11从实线位置跳到虚线所示位置，发生开启，最终实现过载保护。The working process of the thermal overload relay is as follows: the bimetal element 7 bends and deforms under the action of the overload current, and drives the top plate assembly 6 to move in the direction of X1 shown in Figure 1, so that the lever assembly 12 rotates clockwise around the fulcrum A, and then pushes the blade The contact t on 1, the blade 1 jumps, picks from the position shown by the solid line to the position shown by the dotted line, and drives the contact push rod 8 to move in the direction of X2, so that the normally open contact 9 jumps from the position of the solid line to the position shown by the dotted line. The position shown by the dotted line is closed, causing the normally closed contact 11 to jump from the position shown by the solid line to the position shown by the dotted line, and then opens, finally realizing overload protection.
所述刚性支撑5包括第一、第二端51、52，所述刚性支撑5上还设有转轴组件2中的第一分件21，所述第一分件21位于所述第一、第二端51、52之间，且为刚性支撑5的转动支点，所述第一端51连接施力件，该施力件对刚性支撑5产生第一力矩，所述第二端52连接弹性元件，该弹性元件对刚性支撑5产生补偿第一力矩的第二力矩。刚性支撑5可以绕转动支点B旋转，也就是说刚性支撑5可相对热过载继电器的壳体4发生相对转动。所述刚性支撑5为另一组杠杆机构，以图1为例，施力件对刚性支撑5产生一个逆时针的力矩，同时在另一端的弹性元件会产生一个逆时针的力矩以平衡。当施力件发力，可推动刚性支撑5发生轻微的旋转，这样能调节叶片1顶端的位置。另外，转轴组件2方便了刚性支撑5(连同叶片1)的安装，有防呆的功能。The rigid support 5 includes first and second ends 51, 52. The rigid support 5 is also provided with the first sub-component 21 in the shaft assembly 2, and the first sub-component 21 is located at the first and second ends. Between the two ends 51, 52, which is the fulcrum of the rigid support 5, the first end 51 is connected to the force applying member, which generates a first moment to the rigid support 5, and the second end 52 is connected to the elastic element , the elastic element produces a second moment compensating for the first moment to the rigid support 5 . The rigid support 5 can rotate around the fulcrum B, that is to say, the rigid support 5 can rotate relative to the housing 4 of the thermal overload relay. The rigid support 5 is another set of lever mechanisms. Taking FIG. 1 as an example, the force applying member generates a counterclockwise moment to the rigid support 5, and at the same time, the elastic element at the other end generates a counterclockwise moment for balance. When the force is applied, the rigid support 5 can be pushed to rotate slightly, so that the position of the top of the blade 1 can be adjusted. In addition, the rotating shaft assembly 2 facilitates the installation of the rigid support 5 (together with the blade 1), and has the function of foolproofing.
所述施力件优选为细螺纹的螺钉10，当所述螺钉10旋转，所述刚性支撑5的第一端51沿螺钉10轴线运动，因此能调节叶片1顶端位置。见图3，所述刚性支撑5的第一端51设螺纹孔，所述螺钉10在所述螺纹孔中，螺钉10的末端顶在所述热过载继电器的壳体4上。由于螺钉10是顶在壳体4上，当螺钉10对第一端51施加压力，也就能使第一端51朝螺钉10头部移动，产生逆时针的力矩。所述弹性元件为拉簧3，所述拉簧3一端与所述刚性支撑5的第二端52连接，拉簧3的另一端固定在所述热过载继电器的壳体4上。此时拉簧3受力，因此能产生顺时针的力矩。The forcing member is preferably a screw 10 with a fine thread. When the screw 10 rotates, the first end 51 of the rigid support 5 moves along the axis of the screw 10 , so that the position of the tip of the blade 1 can be adjusted. As shown in FIG. 3 , the first end 51 of the rigid support 5 is provided with a threaded hole, the screw 10 is in the threaded hole, and the end of the screw 10 is pushed against the housing 4 of the thermal overload relay. Since the screw 10 is pushed against the housing 4, when the screw 10 exerts pressure on the first end 51, the first end 51 can also be moved toward the head of the screw 10 to generate a counterclockwise moment. The elastic element is a tension spring 3, one end of the tension spring 3 is connected to the second end 52 of the rigid support 5, and the other end of the tension spring 3 is fixed on the housing 4 of the thermal overload relay. Now extension spring 3 is stressed, so clockwise moment can be produced.
或者也可以按如图4所示的方式设置，所述热过载继电器的壳体4设有螺纹孔，所述螺钉10在所述螺纹孔中，螺钉10的末端顶在所述刚性支撑5的第一端51上。螺钉10设在与上述图3相反的刚性支撑5的一侧上。由于壳体4是固定着的，当螺钉10施加压力，末端会推着刚性支撑5的第一端51，同样能产生顺时针的力矩。而在第二端52上，拉簧3受力，因此能产生顺时针的力矩。Or it can also be arranged as shown in Figure 4, the housing 4 of the thermal overload relay is provided with a threaded hole, the screw 10 is in the threaded hole, and the end of the screw 10 is pushed against the end of the rigid support 5 on the first end 51. The screw 10 is provided on the side of the rigid support 5 opposite to that of FIG. 3 above. Since the housing 4 is fixed, when the screw 10 exerts pressure, the end will push the first end 51 of the rigid support 5, which can also generate a clockwise moment. On the second end 52, the extension spring 3 is stressed, so a clockwise moment can be generated.
所述转轴组件2包括第一、第二分件。热过载继电器的壳体4上设有转轴组件2中的第二分件，所述第一分件21与所述第二分件配合。因此，只要第一分件21插入第二分件内或套在第二分件外，就能实现简单而准确的刚性支撑5的装配。所述第一分件21为轴，且固定在刚性支撑5上，那么此时所述第二分件为轴套。或者所述第一分件21为轴套，且固定在刚性支撑5上，那么所述第二分件为轴。The shaft assembly 2 includes first and second parts. The housing 4 of the thermal overload relay is provided with a second sub-component in the shaft assembly 2, and the first sub-component 21 cooperates with the second sub-component. Therefore, as long as the first part 21 is inserted into the second part or sleeved outside the second part, simple and accurate assembly of the rigid support 5 can be realized. The first sub-piece 21 is a shaft and is fixed on the rigid support 5, then the second sub-piece is a shaft sleeve at this time. Or the first part 21 is a shaft sleeve and is fixed on the rigid support 5, then the second part is a shaft.
回到图1，所述刚性支撑5优选为L形，包括垂直部与水平部。更优选地，垂直部与水平部之间通过一小段弧部连接。所述第一端51在所述垂直部上，而且所述叶片1底部与垂直部固定；所述第二端52在所述水平部上，而且所述转轴组件2中的第一分件21设在水平部上。Referring back to Fig. 1, the rigid support 5 is preferably L-shaped, including a vertical part and a horizontal part. More preferably, the vertical part and the horizontal part are connected by a small arc. The first end 51 is on the vertical part, and the bottom of the blade 1 is fixed to the vertical part; the second end 52 is on the horizontal part, and the first part 21 in the shaft assembly 2 on the horizontal section.
通过上述说明可以看出，装配时，叶片1的刚性支撑5与壳体4间的装配通过转轴约束，有效达到装配防呆目的，且叶片1不会受影响装配的外力作用，使得装配过程明显顺畅。另外，通过调节螺钉10，可以达到调节叶片1顶端位置的目的。It can be seen from the above description that during assembly, the assembly between the rigid support 5 of the blade 1 and the housing 4 is constrained by the rotating shaft, which effectively achieves the purpose of assembly foolproofing, and the blade 1 will not be affected by the external force of the assembly, making the assembly process obvious. smooth. In addition, by adjusting the screw 10, the purpose of adjusting the position of the tip of the blade 1 can be achieved.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110453202.8A CN103187213B (en) | 2011-12-29 | 2011-12-29 | Movement mechanism of thermal overload relay |
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| CN201110453202.8A CN103187213B (en) | 2011-12-29 | 2011-12-29 | Movement mechanism of thermal overload relay |
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| CN103187213A CN103187213A (en) | 2013-07-03 |
| CN103187213B true CN103187213B (en) | 2015-03-25 |
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| DE102016210485A1 (en) * | 2016-06-14 | 2017-12-14 | Siemens Aktiengesellschaft | Electromechanical protection device with an overload release device |
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| FR1274608A (en) * | 1960-09-14 | 1961-10-27 | Realisations Mecaniques S E R | Snap-action tripping device and contactor device including application |
| EP0000635A1 (en) * | 1977-07-15 | 1979-02-07 | Ranco Incorporated | Snap acting switch blade and method for manufacturing it |
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| CN101364508A (en) * | 2007-08-07 | 2009-02-11 | Ls产电株式会社 | Thermal overload trip apparatus and method for adjusting trip sensitivity thereof |
| EP2091060A2 (en) * | 2008-02-13 | 2009-08-19 | Fuji Electric FA Components & Systems Co., Ltd. | Thermally operated overload relay |
| CN101958204A (en) * | 2009-07-15 | 2011-01-26 | 大陆株式会社 | Thermal overload relay |
| CN102054629A (en) * | 2009-11-10 | 2011-05-11 | 郭永明 | Digital thermorelay |
| CN202487509U (en) * | 2011-12-29 | 2012-10-10 | 上海良信电器股份有限公司 | Actuation mechanism of thermal overload relay |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2785717B1 (en) * | 1998-11-05 | 2000-12-08 | Schneider Electric Sa | THERMAL RELAY WITH SPRING BLADE MECHANISM |
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|---|---|---|---|---|
| FR1274608A (en) * | 1960-09-14 | 1961-10-27 | Realisations Mecaniques S E R | Snap-action tripping device and contactor device including application |
| EP0000635A1 (en) * | 1977-07-15 | 1979-02-07 | Ranco Incorporated | Snap acting switch blade and method for manufacturing it |
| CN85107902A (en) * | 1985-10-26 | 1987-05-06 | 西屋电气公司 | Circuit breaker with bimetallic and alignment formation |
| CN101364508A (en) * | 2007-08-07 | 2009-02-11 | Ls产电株式会社 | Thermal overload trip apparatus and method for adjusting trip sensitivity thereof |
| EP2091060A2 (en) * | 2008-02-13 | 2009-08-19 | Fuji Electric FA Components & Systems Co., Ltd. | Thermally operated overload relay |
| CN101958204A (en) * | 2009-07-15 | 2011-01-26 | 大陆株式会社 | Thermal overload relay |
| CN102054629A (en) * | 2009-11-10 | 2011-05-11 | 郭永明 | Digital thermorelay |
| CN202487509U (en) * | 2011-12-29 | 2012-10-10 | 上海良信电器股份有限公司 | Actuation mechanism of thermal overload relay |
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| Publication number | Publication date |
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| CN103187213A (en) | 2013-07-03 |
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