WO2015127726A1

WO2015127726A1 - Trigger switch

Info

Publication number: WO2015127726A1
Application number: PCT/CN2014/079410
Authority: WO
Inventors: 王金峰; 梁勇
Original assignee: 上海拜骋电器有限公司
Priority date: 2014-02-25
Filing date: 2014-06-06
Publication date: 2015-09-03
Also published as: CN104867740B; CN104867740A

Abstract

A trigger switch, comprising: a housing (10); a circuit board (20) fixed to the housing (10), wherein the circuit board (20) is provided thereon with a plurality of fixed contacts (21); a slide block (30) slidably arranged inside the housing (10) and provided thereon with two elastic contacts (41) connected to each other, wherein the elastic contacts (41) are in mutual cooperation with the fixed contacts (21) and are selectively connected to two of the plurality of fixed contacts (21); and a drive mechanism (50) in cooperation with the slide block (30) to drive the slide block (30) to slide. According to the trigger switch, the slide block (30) is driven to slide by the drive mechanism (50), so that the two elastic contacts (41) are connected to two of the plurality of fixed contacts (21); and different signals are sent according to different fixed contacts (21) which are connected, for example, trigger signals triggering the forward rotation and reverse rotation of a brushless motor. The switching between different signal states is realized using a simple mechanical drive structure, so that the cost is low, the action is reliable, and the service life is longer compared with existing touch switches or slide switches.

Description

触发开关技术领域本发明涉及开关领域，具体而言，涉及一种触发开关。背景技术目前，在无刷电机控制中，一般采用不需要流经大电流的信号触发组件实现换向功能。现有技术中，最常用的方式为在无刷电机的电路板上安装一个轻触开关或者滑动开关，通过轻触开关的通断，或者滑动开关的档位来给出不同的信号，电路组件通过这个信号来判断并实现无刷电机的正、反转功能。无刷电机因为没有碳刷损耗，理论上寿命是无限的，实际使用中寿命也至少达到 300K-500K, 而现有技术无刷电机控制采用的轻触开关或者滑动开关一般的寿命在 10K-30K左右，显然无法满足无刷电机的长寿命要求，而特殊的轻触开关和滑动开关虽然在寿命上能勉强满足要求，但是价格昂贵。发明内容本发明实施例旨在提供一种功能可靠、降低成本的触发开关。本发明实施例提供了一种触发开关，包括：壳体；电路板，与壳体固定，电路板上具有多个固定触点；滑块，可滑动地设置在壳体内部，且滑块上具有相互连接的两个弹性触点，弹性触点与固定触点相互配合，并可选择地连接多个固定触点中的两个；驱动机构，与滑块配合以驱动滑块滑动。优选地，触发开关还包括弹性片，弹性片固定设置在滑块与电路板相对的一侧上，且两个弹性触点分别位于弹性片的两端。优选地，驱动机构包括转子和驱动转子转动的手柄，转子可转动地设置在壳体内部；转子上具有驱动柄，驱动柄与滑块配合以驱动滑块滑动。优选地，壳体包括触发组件壳体和开关壳体，触发组件壳体固定设置在开关壳体的内部；触发组件壳体上具有转子腔和滑块腔，转子腔与滑块腔之间具有相互连通的连通缺口；转子可转动地设置在转子腔中，滑块可滑动地设置在滑块腔中；驱动柄与连通缺口对应。优选地，滑块背离电路板的一侧还设置有固定凸起，固定凸起位于连通缺口中；固定凸起上具有限制槽，驱动柄的自由端可转动地卡接在限制槽中。优选地，转子腔的侧壁上具有多个档位槽，转子上具有与档位槽配合的限位机构。优选地，多个档位槽为多个圆弧形凹槽，限位机构包括与圆弧形凹槽配合的圆弧止挡部和将圆弧止挡部压紧在圆弧形凹槽中的弹簧。优选地，档位槽为三个，包括位于中间的第一档位槽和位于第一档位槽两侧的第二档位槽和第三档位槽；固定触点为三个，包括相互隔离的第一触点、第二触点和第三触点；限位机构位于第一档位槽中时，转子驱动滑块使第一触点与第二触点和第三触点均不连通；限位机构位于第二档位槽中时，转子驱动滑块使第一触点与第二触点连通；限位机构位于第三档位槽中时，转子驱动滑块使第一触点与第三触点连通。优选地，开关壳体包括开关上壳和开关下壳，开关上壳和开关下壳配合形成手柄安装部；手柄可转动地设置在手柄安装部上，且手柄的第一端与转子配合以驱动转子转动，手柄的第二端位于开关壳体的外部。优选地，手柄的第一端具有 U形槽，转子上设置有与 U形槽配合的驱动轴。根据本发明的触发开关，通过驱动机构驱动滑块滑动，从而使两个弹性触点与多个固定触点中的两个连接，根据连接固定触点不同，发出不同的信号，例如触发无刷电机正、反转的触发信号。本发明利用简单的机械传动结构，实现不同信号状态的切换，成本低廉，动作可靠，而且相比现有的轻触开关或者滑动开关寿命更长久。附图说明构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：图 1是根据本发明实施例的触发开关的立体结构示意图；图 2是根据本发明实施例的触发开关的第一平面结构示意图；图 3是根据本发明实施例的触发开关在去除手柄之后的第二平面结构示意图；图 4是根据本发明实施例的触发开关的触发组件壳体的第一立体结构示意图；图 5是根据本发明实施例的触发开关的触发组件壳体的第二立体结构示意图；图 6是根据本发明实施例的触发开关的触发组件壳体的第三平面结构示意图；图 7是根据本发明实施例的触发开关的触发组件壳体装入开关下壳的立体结构示意图；图 8是根据本发明实施例的触发开关在第一位置的原理结构示意图；图 9是根据本发明实施例的触发开关在第二位置的原理结构示意图；图 10是根据本发明实施例的触发开关在第三位置的原理结构示意图；以及图 11 是根据本发明实施例的触发开关的另一实施例中弹性片与电路板的配合示意图。具体实施方式下面将参考附图并结合实施例来详细说明本发明。如图 1和图 2所示，根据本发明的触发开关的一个较优选的实施例中，触发开关包括：壳体 10、电路板 20、滑块 30和驱动机构 50，其中，电路板 20与壳体 10固定，并且电路板 20上具有多个固定触点 21 ; 滑块 30可滑动地设置在壳体 10内部，并且滑块 30上具有相互连接的两个弹性触点 41，弹性触点 41与固定触点 21相互配合，并可选择地连接多个固定触点 21 中的两个；驱动机构 50与滑块 30配合以驱动滑块 30滑动。本发明的触发开关，通过驱动机构 50驱动滑块 30滑动，从而使两个弹性触点 41与多个固定触点 21中的两个连接，根据连接固定触点 21的不同，发出不同的信号，例如触发无刷电机正、反转的触发信号。本发明利用简单的机械传动结构，实现不同信号状态的切换，成本低廉，动作可靠，而且相比现有的轻触开关或者滑动开关寿命更长久。优选地，结合图 3和图 4所示，触发开关还包括弹性片 40，弹性片 40固定设置在滑块 30与电路板 20相对的一侧上，且两个弹性触点 41分别位于弹性片 40的两端。通过设置弹性片 40，增加弹性触点 41相对电路板 20 (固定触点 21 ) 的压紧力，从而保证弹性触点 41与固定触点 21的连接可靠性，保证触发开关的正常工作，是提高触发开关寿命的可靠途径。结合图 1至 4所示，在本发明的触发开关较优选的实施例中，驱动机构 50包括转子 51和驱动转子 51转动的手柄 52，转子 51可转动地设置在壳体 10内部，具体地，转子 51上具有驱动柄 511，驱动柄 511与滑块 30配合以驱动滑块 30滑动。手柄 52 驱动转子 51转动，从而使转子 51上的驱动柄 511摆动，驱动柄 511摆动过程中，推动滑块 30滑动，从而使弹性触点 41导通不同的两个固定触点 21，发出不同的触发信号，采用转子传动，结构简单，可靠性高，能够有效地提高触发开关的寿命。结合图 1至 4所示，在本发明的优选实施例中，壳体 10包括触发组件壳体 11和开关壳体 12，触发组件壳体 11固定设置在开关壳体 12的内部。具体地，图 5和图 6 所示，触发组件壳体 11上具有转子腔 111和滑块腔 112，转子 51可转动地设置在转子腔 111中，滑块 30可滑动地设置在滑块腔 112中。具体地，转子 51的长度大于其宽度，相应地，转子腔 111从整体上也大致呈一个长度大于其宽度的形状。因而，转子 51设置在转子腔 111中时，可以在一定的范围内转动，从而使转子 51可以驱动的滑块 30滑动。同时，由于二者都不是一个规则的圆形，当转子 51转动到其侧边与转子腔 111的侧边相抵接时，转子 51不可继续转动，一方面可保证转子 51将滑块 30推动到合适的位置，从而使的弹性触点 41与固定触点 21连接可靠；另一方面，也可防止转子 51过渡转动，导致其它结构损坏，保证可靠性。转子腔 111与滑块腔 112之间具有相互连通的连通缺口 113，驱动柄 511与连通缺口 113对应，也即驱动柄 511通过连通缺口 113驱动滑块 30，从而使滑块 30运动到合适的位置，使触发开关发出不同的触发信号。更具体地，滑块 30背离电路板 20的一侧还设置有固定凸起 31，固定凸起 31位于连通缺口 113中，固定凸起 31上具有限制槽 32，驱动柄 511的自由端可转动地卡接在限制槽 32中，转子 51转动过程中，使驱动柄 511摆动，驱动柄 511相对限制槽 32既有转动运动也有滑动运动，使转子 51的转动转化为滑块 30的平动。优选地，转子腔 111的侧壁上具有多个档位槽 114，转子 51上具有与档位槽 114 配合的限位机构 53，设置档位槽 114和限位机构 53，能够有效地确定转子 51转动的角度。更优选地，多个档位槽 114为多个圆弧形凹槽，限位机构 53包括与圆弧形凹槽配合的圆弧止挡部和将圆弧止挡部压紧在圆弧形凹槽中的弹簧，通过设置弹簧和圆弧止挡部，从一个档位槽转动到另一个档位槽中使，由于弹簧压紧力的变化，能够有效地提高转动操作时的手感。一般地，圆弧形止挡部可以采用钢珠，在转子 51转动过程中，钢珠可以自转，从而使转子转动更灵活。如图 3和图 7所示，本发明的触发开关的开关壳体 12包括开关上壳 12a和开关下壳 12b，开关上壳 12a与开关下壳 12b对应，从而形成安装腔。图 7示出了触发组件壳体 11与开关下壳 12b的装配图示意图，触发组件壳体 11安装在安装腔内部。组装时，首先将触发组件壳体 11上的部件安装完毕后，将触发组件壳体 11安装到开关壳体 12内部，能够有效地提高安装效率。开关上壳 12a和开关下壳 12b配合形成手柄安装部；手柄 52可转动地安装在手柄安装部上，并且手柄 52的第一端位于开关壳体内部，并且与转子 51配合，从而驱动转子 51转动，手柄的第二端位于开关壳体 12 的外部，方便操作。优选地，手柄 52 的第一端具有 U形槽 521，转子 51上设置有与 U形槽 521配合的驱动轴 512，即手柄 52摆动过程中，手柄 52第一端通过 U形槽 521作用驱动轴 512，从而使转子 51相对其转动轴转动。在本发明的优选实施例中，档位槽 114和固定触点 31均为三个，结合图 6的结构图和图 8至 10所示的原理图来具体说明优选实施例的触发开关的工作原理。如图 6所示，三个档位槽 114包括位于中间的第一档位槽 114a和位于第一档位槽 114a两侧的第二档位槽 114b和第三档位槽 114c。结合图 8至 10所示，三个固定触点 21包括位于中间的第一触点 21a和位于第一触点 21a两侧的第二触点 21b和第三触点 21c。当转子 51上的限位机构 53位于第一档位槽 114a中时，如图 8所示，转子 51通过驱动柄 511推动滑块 30及滑块 30上的弹性片 40位于中间位置，三个固定触点 21 相互之间均不连通，触发开关处于关闭位置。如图 9所示，当转子 51上的限位机构 53位于第二档位槽 114b中时，转子 51通过驱动柄 511推动滑块 30运动，从而使弹性片 40两端的两个弹性触点 41分别与第一触点 21a和第二触点 21b连接，从而使第一触点 21a与第二触点 21b连通。如图 10所示，当转子 51上的限位机构 53位于第三档位槽 114c中时，转子 51通过驱动柄 511推动滑块 30运动，从而使弹性片 40两端的两个弹性触点 41分别与第一触点 21a和第三触点 21c连接，从而使第一触点 21a与第三触点 21c连通。即如果第一触点 21a和第三触点 21c分别连接无刷电机的两极，图 9和图 10所示状态分别触发电机的转动方向相反。如图 11所示，在本发明的另一优选实施例中，第二触点 21b和第三触点 21c设置在同一直线上，第一触点 21a沿第二触点 21b和第三触点 21c并排布置。相应地，弹性片 40的两个弹性触点 41中的一个与第一触点 21a对应布置，另一个弹性触点 41与第二触点 21b和第三触点 21c对应布置，随着弹性片 40的移动，可以选择地将第一触点 21a与第二触点 21b或者第三触点 21c连通，其工作原理与前述实施例相似，不再赘述。从以上的描述中，可以看出，本发明上述的实施例实现了如下技术效果：根据本发明的触发开关，通过驱动机构驱动滑块滑动，从而使两个弹性触点与多个固定触点中的两个连接，根据连接固定触点不同，发出不同的信号，例如触发无刷电机正、反转的触发信号。本发明利用简单的机械传动结构，实现不同信号状态的切换，成本低廉，动作可靠，而且相比现有的轻触开关或者滑动开关寿命更长久。以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of switches, and in particular to a trigger switch. BACKGROUND OF THE INVENTION At present, in brushless motor control, a signal triggering component that does not need to flow a large current is generally used to implement a commutation function. In the prior art, the most common way is to install a tact switch or a slide switch on the circuit board of the brushless motor, and give different signals by the on/off of the tact switch or the gear position of the slide switch, the circuit component This signal is used to judge and realize the forward and reverse functions of the brushless motor. Because there is no carbon brush loss in the brushless motor, the theoretical life is unlimited, and the life in actual use is at least 300K-500K. However, the life of the tact switch or slide switch used in the prior art brushless motor control is 10K-30K. Left and right, obviously can not meet the long life requirements of brushless motors, while the special tact switches and slide switches can barely meet the requirements in terms of life, but they are expensive. SUMMARY OF THE INVENTION Embodiments of the present invention are directed to providing a trigger switch that is reliable in function and reduces cost. An embodiment of the present invention provides a trigger switch, including: a housing; a circuit board fixed to the housing, the circuit board having a plurality of fixed contacts; and a slider slidably disposed inside the housing and on the slider The two elastic contacts are connected to each other, the elastic contact and the fixed contact cooperate with each other, and optionally connect two of the plurality of fixed contacts; the driving mechanism cooperates with the slider to drive the slider to slide. Preferably, the trigger switch further comprises an elastic piece fixedly disposed on a side of the slider opposite to the circuit board, and the two elastic contacts are respectively located at two ends of the elastic piece. Preferably, the driving mechanism comprises a rotor and a handle for driving the rotor to rotate, the rotor is rotatably disposed inside the housing; the rotor has a driving handle, and the driving handle cooperates with the slider to drive the slider to slide. Preferably, the housing comprises a trigger assembly housing and a switch housing, the trigger assembly housing is fixedly disposed inside the switch housing; the trigger assembly housing has a rotor chamber and a slider chamber, and the rotor chamber and the slider chamber have a Connected gaps communicating with each other; the rotor is rotatably disposed in the rotor cavity, and the slider is slidably disposed in the slider cavity; the drive handle corresponds to the communication gap. Preferably, the side of the slider facing away from the circuit board is further provided with a fixing protrusion, the fixing protrusion is located in the communication notch; the fixing protrusion has a limiting groove, and the free end of the driving handle is rotatably engaged in the limiting groove. Preferably, the rotor cavity has a plurality of gear slots on the side wall, and the rotor has a limiting mechanism that cooperates with the gear slot. Preferably, the plurality of gear slots are a plurality of arcuate grooves, and the limiting mechanism comprises an arc stop that cooperates with the arcuate groove and presses the arc stop into the arcuate groove Spring. Preferably, the gear slot is three, including a first gear slot in the middle and a second gear slot and a third gear slot on both sides of the first gear slot; three fixed contacts, including each other The first contact, the second contact and the third contact are separated; when the limiting mechanism is located in the first gear slot, the rotor drives the slider so that the first contact and the second contact and the third contact are neither When the limiting mechanism is located in the second gear slot, the rotor drives the slider to connect the first contact with the second contact; when the limiting mechanism is located in the third gear slot, the rotor drives the slider to make the first touch The point is in communication with the third contact. Preferably, the switch housing comprises a switch upper case and a switch lower case, and the switch upper case and the switch lower case cooperate to form a handle mounting portion; the handle is rotatably disposed on the handle mounting portion, and the first end of the handle cooperates with the rotor to drive The rotor rotates and the second end of the handle is located outside of the switch housing. Preferably, the first end of the handle has a U-shaped groove, and the rotor is provided with a drive shaft that cooperates with the U-shaped groove. According to the trigger switch of the present invention, the sliding mechanism is driven by the driving mechanism to connect the two elastic contacts with two of the plurality of fixed contacts, and different signals are emitted according to the different fixed contacts, for example, triggering the brushless Trigger signal for positive and negative motor. The invention utilizes a simple mechanical transmission structure to realize switching of different signal states, low cost, reliable operation, and longer life than the existing tact switch or slide switch. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. 1 is a schematic perspective view of a trigger switch according to an embodiment of the invention; FIG. 2 is a first plan view of a trigger switch according to an embodiment of the invention; FIG. 3 is a trigger switch according to an embodiment of the invention. FIG. 4 is a first perspective structural view of a trigger assembly housing of a trigger switch according to an embodiment of the present invention; FIG. 5 is a trigger assembly housing of a trigger switch according to an embodiment of the invention. a schematic view of the second three-dimensional structure; 6 is a schematic diagram showing a third planar structure of a trigger assembly housing of a trigger switch according to an embodiment of the present invention; FIG. 7 is a perspective view showing a three-dimensional structure of a trigger assembly housing of a trigger switch mounted in a lower housing of a switch according to an embodiment of the present invention; 8 is a schematic structural diagram of a trigger switch in a first position according to an embodiment of the present invention; FIG. 9 is a schematic structural diagram of a trigger switch in a second position according to an embodiment of the present invention; FIG. 10 is a trigger switch according to an embodiment of the present invention. Schematic diagram of the principle of the third position; and FIG. 11 is a schematic diagram of the cooperation of the elastic piece and the circuit board in another embodiment of the trigger switch according to the embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, in a more preferred embodiment of the trigger switch according to the present invention, the trigger switch comprises: a housing 10, a circuit board 20, a slider 30 and a driving mechanism 50, wherein the circuit board 20 is The housing 10 is fixed, and the circuit board 20 has a plurality of fixed contacts 21; the slider 30 is slidably disposed inside the housing 10, and the slider 30 has two elastic contacts 41 connected to each other, and the elastic contacts 41 mates with the fixed contact 21 and optionally connects two of the plurality of fixed contacts 21; the drive mechanism 50 cooperates with the slider 30 to drive the slider 30 to slide. The trigger switch of the present invention drives the slider 30 to slide by the driving mechanism 50, so that the two elastic contacts 41 are connected to two of the plurality of fixed contacts 21, and different signals are emitted according to the difference of the connecting fixed contacts 21. For example, trigger the trigger signal of the brushless motor forward and reverse. The invention utilizes a simple mechanical transmission structure to realize switching of different signal states, low cost, reliable operation, and longer life than the existing tact switch or slide switch. Preferably, as shown in FIG. 3 and FIG. 4, the trigger switch further includes an elastic piece 40 fixedly disposed on a side of the slider 30 opposite to the circuit board 20, and the two elastic contacts 41 are respectively located on the elastic piece Both ends of 40. By providing the elastic piece 40, the pressing force of the elastic contact 41 relative to the circuit board 20 (the fixed contact 21) is increased, thereby ensuring the reliability of the connection between the elastic contact 41 and the fixed contact 21, and ensuring the normal operation of the trigger switch. A reliable way to increase the life of the trigger switch. 1 to 4, in a preferred embodiment of the trigger switch of the present invention, the drive mechanism 50 includes a rotor 51 and a handle 52 that drives the rotor 51 to rotate. The rotor 51 is rotatably disposed inside the housing 10, specifically The rotor 51 has a drive handle 511 thereon, and the drive handle 511 cooperates with the slider 30 to drive the slider 30 to slide. Handle 52 The driving rotor 51 is rotated to swing the driving handle 511 on the rotor 51. During the swinging of the driving handle 511, the slider 30 is pushed to slide, so that the elastic contact 41 conducts two different fixed contacts 21, and different triggers are issued. The signal, using rotor drive, has a simple structure and high reliability, which can effectively improve the life of the trigger switch. 1 to 4, in a preferred embodiment of the present invention, the housing 10 includes a trigger assembly housing 11 and a switch housing 12 that is fixedly disposed inside the switch housing 12. Specifically, as shown in FIG. 5 and FIG. 6, the trigger assembly housing 11 has a rotor cavity 111 and a slider cavity 112. The rotor 51 is rotatably disposed in the rotor cavity 111, and the slider 30 is slidably disposed in the slider cavity. 112. Specifically, the length of the rotor 51 is larger than the width thereof, and accordingly, the rotor cavity 111 is also substantially a shape having a length greater than its width as a whole. Therefore, when the rotor 51 is disposed in the rotor cavity 111, it can be rotated within a certain range to slide the slider 30 that the rotor 51 can drive. Meanwhile, since neither of them is a regular circle, when the rotor 51 is rotated until its side abuts against the side of the rotor cavity 111, the rotor 51 cannot continue to rotate, and on the one hand, the rotor 51 is urged to push the slider 30 to The proper position is such that the elastic contact 41 is reliably connected to the fixed contact 21; on the other hand, the rotor 51 can be prevented from being rotated, resulting in damage to other structures and ensuring reliability. The rotor cavity 111 and the slider cavity 112 have communication gaps 113 communicating with each other, and the driving handle 511 corresponds to the communication notch 113, that is, the driving handle 511 drives the slider 30 through the communication notch 113, thereby moving the slider 30 to an appropriate position. Position, causing the trigger switch to emit a different trigger signal. More specifically, the side of the slider 30 facing away from the circuit board 20 is further provided with a fixing protrusion 31. The fixing protrusion 31 is located in the communication notch 113. The fixing protrusion 31 has a limiting groove 32, and the free end of the driving handle 511 is rotatable. The grounding is engaged in the restricting groove 32. During the rotation of the rotor 51, the driving handle 511 is swung, and the driving handle 511 has both a rotating motion and a sliding motion with respect to the restricting groove 32, so that the rotation of the rotor 51 is converted into the translation of the slider 30. Preferably, the rotor cavity 111 has a plurality of gear slots 114 on the side wall thereof, and the rotor 51 has a limiting mechanism 53 cooperated with the gear slot 114, and the gear slot 114 and the limiting mechanism 53 are disposed to effectively determine the rotor. 51 angle of rotation. More preferably, the plurality of gear slots 114 are a plurality of arcuate grooves, and the limiting mechanism 53 includes a circular arc stop that cooperates with the circular arc groove and presses the arc stop to the circular arc shape. The spring in the groove can be rotated from one gear slot to the other gear slot by providing a spring and a circular arc stop, so that the hand feeling during the turning operation can be effectively improved due to the change of the spring pressing force. Generally, the arc-shaped stop portion may be a steel ball, and during the rotation of the rotor 51, the steel ball can rotate, thereby making the rotor rotation more flexible. As shown in FIGS. 3 and 7, the switch housing 12 of the trigger switch of the present invention includes a switch upper case 12a and a switch lower case 12b, and the switch upper case 12a corresponds to the switch lower case 12b, thereby forming a mounting cavity. Fig. 7 shows an assembly view of the trigger assembly housing 11 and the switch lower housing 12b, the trigger assembly housing 11 being mounted inside the mounting chamber. Assembly When the components on the trigger assembly housing 11 are first mounted, the trigger assembly housing 11 is mounted inside the switch housing 12, which can effectively improve the mounting efficiency. The switch upper case 12a and the switch lower case 12b cooperate to form a handle mounting portion; the handle 52 is rotatably mounted on the handle mounting portion, and the first end of the handle 52 is located inside the switch housing and cooperates with the rotor 51 to drive the rotor 51 Rotating, the second end of the handle is located outside the switch housing 12 for easy operation. Preferably, the first end of the handle 52 has a U-shaped slot 521, and the rotor 51 is provided with a driving shaft 512 that cooperates with the U-shaped slot 521, that is, the first end of the handle 52 is driven by the U-shaped slot 521 during the swinging of the handle 52. The shaft 512 rotates the rotor 51 relative to its axis of rotation. In the preferred embodiment of the present invention, the gear slot 114 and the fixed contact 31 are three, and the operation of the trigger switch of the preferred embodiment is specifically described in conjunction with the structural diagram of FIG. 6 and the schematic diagrams shown in FIGS. 8-10. principle. As shown in FIG. 6, the three gear slots 114 include a first gear slot 114a in the middle and a second gear slot 114b and a third gear slot 114c on either side of the first gear slot 114a. 8 to 10, the three fixed contacts 21 include a first contact 21a in the middle and a second contact 21b and a third contact 21c on both sides of the first contact 21a. When the limiting mechanism 53 on the rotor 51 is located in the first gear position groove 114a, as shown in FIG. 8, the rotor 51 pushes the slider 30 and the elastic piece 40 on the slider 30 in the middle position by the driving handle 511, three The fixed contacts 21 are not connected to each other, and the trigger switch is in the closed position. As shown in FIG. 9, when the stopper mechanism 53 on the rotor 51 is located in the second gear position groove 114b, the rotor 51 pushes the slider 30 by the driving handle 511, thereby causing the two elastic contacts 41 at both ends of the elastic piece 40. The first contact 21a and the second contact 21b are respectively connected to connect the first contact 21a with the second contact 21b. As shown in FIG. 10, when the stopper mechanism 53 on the rotor 51 is located in the third gear position groove 114c, the rotor 51 pushes the slider 30 by the driving handle 511, thereby causing the two elastic contacts 41 at both ends of the elastic piece 40. The first contact 21a and the third contact 21c are respectively connected to connect the first contact 21a with the third contact 21c. That is, if the first contact 21a and the third contact 21c are respectively connected to the two poles of the brushless motor, the states shown in FIGS. 9 and 10 respectively trigger the opposite directions of rotation of the motor. As shown in FIG. 11, in another preferred embodiment of the present invention, the second contact 21b and the third contact 21c are disposed on the same straight line, and the first contact 21a is along the second contact 21b and the third contact. 21c is arranged side by side. Correspondingly, one of the two elastic contacts 41 of the elastic piece 40 is disposed corresponding to the first contact 21a, and the other elastic contact 41 is disposed corresponding to the second contact 21b and the third contact 21c, with the elastic piece 40 movement, you can choose the first touch The point 21a is in communication with the second contact 21b or the third contact 21c, and its working principle is similar to that of the foregoing embodiment, and will not be described again. From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: According to the trigger switch of the present invention, the slider is driven to slide by the driving mechanism, thereby making the two elastic contacts and the plurality of fixed contacts The two connections in the two, according to the connection of fixed contacts, send different signals, such as triggering the trigger signal of the brushless motor forward and reverse. The invention utilizes a simple mechanical transmission structure to realize switching of different signal states, low cost, reliable operation, and longer life than the existing tact switch or slide switch. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claims

1. 一种触发开关，包括： 1. A trigger switch, comprising:

壳体（10); Housing (10);

电路板（20)，与所述壳体（10) 固定，所述电路板（20)上具有多个固定触点（21); 滑块（30)，可滑动地设置在所述壳体（10) 内部，且所述滑块（30)上具有相互连接的两个弹性触点（41)，所述弹性触点（41) 与所述固定触点（21) 相互配合，并可选择地连接所述多个固定触点（21) 中的两个； a circuit board (20) fixed to the housing (10), the circuit board (20) having a plurality of fixed contacts (21); a slider (30) slidably disposed in the housing ( 10) internal, and the slider (30) has two elastic contacts (41) connected to each other, the elastic contact (41) and the fixed contact (21) cooperate with each other, and optionally Connecting two of the plurality of fixed contacts (21);

驱动机构（50)，与所述滑块（30) 配合以驱动所述滑块（30) 滑动。 A drive mechanism (50) cooperates with the slider (30) to drive the slider (30) to slide.

2. 根据权利要求 1所述的触发开关，其中， 2. The trigger switch according to claim 1, wherein

所述触发开关还包括弹性片（40)，所述弹性片（40)固定设置在所述滑块 (30) 与所述电路板（20) 相对的一侧上，且所述两个弹性触点（41) 分别位于所述弹性片（40) 的两端。 The trigger switch further includes an elastic piece (40) fixedly disposed on a side of the slider (30) opposite to the circuit board (20), and the two elastic touches Points (41) are respectively located at both ends of the elastic piece (40).

3. 根据权利要求 1所述的触发开关，其中， 3. The trigger switch according to claim 1, wherein

所述驱动机构（50)包括转子（51)和驱动所述转子（51)转动的手柄（52)，所述转子（51) 可转动地设置在所述壳体（10) 内部； The driving mechanism (50) includes a rotor (51) and a handle (52) for driving the rotor (51) to rotate, the rotor (51) being rotatably disposed inside the casing (10);

所述转子（51)上具有驱动柄（511)，所述驱动柄（511)与所述滑块（30) 配合以驱动所述滑块（30) 滑动。 The rotor (51) has a drive handle (511), and the drive handle (511) cooperates with the slider (30) to drive the slider (30) to slide.

4. 根据权利要求 3所述的触发开关，其中，所述壳体（10)包括触发组件壳体（11)和开关壳体（12)，所述触发组件壳体（11) 固定设置在所述开关壳体（12) 的内部； 4. The trigger switch according to claim 3, wherein the housing (10) comprises a trigger assembly housing (11) and a switch housing (12), the trigger assembly housing (11) being fixedly disposed at the The inside of the switch housing (12);

所述触发组件壳体（11)上具有转子腔（111)和滑块腔（112)，所述转子腔（111) 与所述滑块腔（112) 之间具有相互连通的连通缺口（113); 所述转子（51)可转动地设置所述转子腔（111) 中，所述滑块（30)可滑动地设置在所述滑块腔（112) 中； The trigger assembly housing (11) has a rotor cavity (111) and a slider cavity (112), and the rotor cavity (111) and the slider cavity (112) have interconnecting communication gaps (113) The rotor (51) is rotatably disposed in the rotor cavity (111), and the slider (30) is slidably disposed in the slider cavity (112);

所述驱动柄（511) 与所述连通缺口（113) 对应。根据权利要求 4所述的触发开关，其中，所述滑块（30)背离所述电路板（20) 的一侧还设置有固定凸起（31)，所述固定凸起（31) 位于所述连通缺口（113) 中；所述固定凸起（31) 上具有限制槽（32)，所述驱动柄（511) 的自由端可转动地卡接在所述限制槽（32) 中。 The drive handle (511) corresponds to the communication gap (113). The trigger switch according to claim 4, wherein A fixing protrusion (31) is further disposed on a side of the slider (30) facing away from the circuit board (20), and the fixing protrusion (31) is located in the communication gap (113); The (31) has a restricting groove (32), and the free end of the driving handle (511) is rotatably engaged in the restricting groove (32).

6. 根据权利要求 4所述的触发开关，其中，所述转子腔（111) 的侧壁上具有多个档位槽（114)，所述转子（51)上具有与所述档位槽（114) 配合的限位机构（53)。 The trigger switch according to claim 4, wherein a plurality of gear slots (114) are disposed on a sidewall of the rotor cavity (111), and the rotor (51) has a slot with the gear ( 114) Cooperating limit mechanism (53).

7. 根据权利要求 6所述的触发开关，其中，所述多个档位槽（114)为多个圆弧形凹槽，所述限位机构（53)包括与所述圆弧形凹槽配合的圆弧止挡部和将所述圆弧止挡部压紧在所述圆弧形凹槽中的弹簧。 The trigger switch according to claim 6, wherein the plurality of gear slots (114) are a plurality of arcuate grooves, and the limiting mechanism (53) includes the arcuate groove a mating arc stop and a spring that presses the arc stop into the arcuate groove.

8. 根据权利要求 6所述的触发开关，其中，所述档位槽（114) 为三个，包括位于中间的第一档位槽（114a)和位于所述第一档位槽（114a) 两侧的第二档位槽（114b) 和第三档位槽（114c); 所述固定触点（21) 为三个，包括相互隔离的第一触点（21a)、第二触点 (21b) 和第三触点 (21c); 8. The trigger switch according to claim 6, wherein the gear position slots (114) are three, including a first gear slot (114a) located in the middle and located in the first gear slot (114a) a second gear slot (114b) and a third gear slot (114c) on both sides; the fixed contact (21) is three, including a first contact (21a) and a second contact (isolated) 21b) and third contact (21c);

所述限位机构（53) 位于所述第一档位槽（114a) 中时，所述转子（51) 驱动所述滑块（30) 使所述第一触点（21a) 与所述第二触点（21b) 和所述第三触点（21c) 均不连通；所述限位机构（53) 位于所述第二档位槽（114b) 中时，所述转子（51) 驱动所述滑块（30) 使所述第一触点（21a) 与第二触点（21b) 连通； When the limiting mechanism (53) is located in the first gear position slot (114a), the rotor (51) drives the slider (30) to make the first contact (21a) and the first The two contacts (21b) and the third contact (21c) are not connected; when the limiting mechanism (53) is located in the second gear slot (114b), the rotor (51) is driven The slider (30) connects the first contact (21a) with the second contact (21b);

所述限位机构（53) 位于所述第三档位槽（114c) 中时，所述转子（51) 驱动所述滑块（30) 使所述第一触点（21a) 与第三触点（21c) 连通。 When the limiting mechanism (53) is located in the third gear slot (114c), the rotor (51) drives the slider (30) to make the first contact (21a) and the third contact Point (21c) is connected.

9. 根据权利要求 4所述的触发开关，其中，所述开关壳体（12)包括开关上壳（12a)和开关下壳（12b)，所述开关上壳（12a) 和所述开关下壳（12b) 配合形成手柄安装部；所述手柄（52) 可转动地设置在所述手柄安装部上，且所述手柄（52) 的第一端与所述转子（51) 配合以驱动所述的转子（51) 转动，所述手柄（52) 的第二端位于所述开关壳体（12) 的外部。根据权利要求 9所述的触发开关，其中， 9. The trigger switch according to claim 4, wherein the switch housing (12) comprises a switch upper case (12a) and a switch lower case (12b), the switch upper case (12a) and the switch The shell (12b) cooperates to form a handle mounting portion; the handle (52) is rotatably disposed on the handle mounting portion, and the first end of the handle (52) cooperates with the rotor (51) to drive the The rotor (51) is rotated, and the second end of the handle (52) is located outside the switch housing (12). The trigger switch according to claim 9, wherein

所述手柄（52) 的第一端具有 U形槽（521)，所述转子（51) 上设置有与所述 U形槽（521) 配合的驱动轴（512)。 The first end of the handle (52) has a U-shaped groove (521), and the rotor (51) is provided with a drive shaft (512) that cooperates with the U-shaped groove (521).