WO2017215620A1 - Temperature-sensing switch in bridge-type contact structure - Google Patents
Temperature-sensing switch in bridge-type contact structure Download PDFInfo
- Publication number
- WO2017215620A1 WO2017215620A1 PCT/CN2017/088372 CN2017088372W WO2017215620A1 WO 2017215620 A1 WO2017215620 A1 WO 2017215620A1 CN 2017088372 W CN2017088372 W CN 2017088372W WO 2017215620 A1 WO2017215620 A1 WO 2017215620A1
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- contact
- movable contact
- bridge
- temperature sensing
- stationary
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
- H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
- H01H37/766—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a bridging contact
Definitions
- the invention relates to a temperature sensing switch, in particular to a bridge type contact structure temperature sensing switch.
- SMPS switching power supplies
- high voltage power supplies high voltage power supplies
- switching applications such as locomotive traction motors and hybrid vehicles.
- a temperature sensitive switch is needed to turn on the alarm circuit and issue an alarm when the ambient temperature reaches a preset temperature.
- the present invention provides a bridge type contact structure temperature sensitive switch, comprising a cavity formed by a casing and an insulating base, a temperature sensing body, an elastic device, a bridge movable contact device, and a static contact.
- the bridge movable contact device comprises a bridge body, a first movable contact and a second movable contact
- the static contact device comprises a first stationary contact and a second stationary contact corresponding to the first movable contact and the second movable contact, the first stationary contact and the second stationary contact being located in the hole in the base and passing through the hole respectively Extending outwardly to form a first stationary spring leg and a second static spring leg
- the temperature sensing switch further comprising a guiding device having a first end in contact with the temperature sensing body and a first connection with the bridge movable contact device At the two ends, when the temperature sensing body is melted, the elastic device drives the bridge type moving contact device to move axially along the guiding device, thereby achieving contact or separation between the moving contact and the static contact, thereby turning on or off the first static Electrical connection between the spring foot and the second stationary spring foot.
- the guiding device comprises a guiding washer and a guiding shaft, the end surface of the guiding gasket is in contact with the temperature sensing body, the guiding shaft is connected to the bridge movable contact device and has an axial guiding rib, and the guiding gasket is opened Guide grooves with guiding ribs.
- the elastic device comprises a first elastic member located between the temperature sensing body and the bridge movable contact device, and a second elastic member located at the inner wall of the bridge movable contact device and the cavity
- the elastic force of the first elastic member is greater than the elastic force of the second elastic member.
- the bridge body is a conductor, and the first movable contact and the second movable contact are electrically connected through the bridge body.
- the bridge body is an insulator
- the bridge movable contact device further includes a third movable contact and a fourth movable contact
- the static contact device further includes a third fixed contact and a fourth fixed contact connected to each other
- the third stationary contact and the fourth stationary contact are electrically connected by a U-shaped contact piece located in the base, and the third stationary contact and the fourth stationary contact are respectively connected to the third movable contact and the fourth dynamic contact
- the third movable contact is electrically connected to the first movable contact
- the fourth movable contact is electrically connected to the second movable contact
- the corresponding movable contact and the stationary contact are synchronously contacted or separated, thereby The conduction or disconnection between the first stationary spring foot and the second static spring foot is achieved.
- the moving contact is located in the bore of the bridge body and has a butterfly spring piece.
- the aperture in the base is a stepped aperture such that the static contact is retracted into the base.
- the movable contact and the stationary contact are a plurality of sets of parallel contacts.
- the cavity has a temperature sensing cavity for accommodating the temperature sensing body, and both sides of the temperature sensing cavity are provided with a melting groove, and the temperature sensing cavity and the melting groove have a through groove.
- a mounting hole may be provided on the outer surface of the outer casing.
- Figure 1 is a cross-sectional view showing a first embodiment of the present invention, wherein the temperature sensing body is solid;
- Figure 2 is a perspective exploded view of the structure shown in Figure 1;
- Figure 3 is a cross-sectional view showing a first embodiment of the present invention, wherein the temperature sensing body is in a liquid state;
- Figure 4 is a cross-sectional view showing a second embodiment of the present invention.
- Figure 5 is a cross-sectional view showing a third embodiment of the present invention.
- Figure 6 is a side view showing the mounting manner of the end faces according to the first, second and third embodiments of the present invention.
- Fig. 7 is a side view showing the mounting manner of the first, second and third embodiments of the present invention.
- a bridge type contact structure temperature sensitive switch may be a normally closed type over temperature protection member.
- a temperature sensing body 103 In the cavity constructed by the non-metallic outer casing 101 and the insulating base 102, a temperature sensing body 103, a guiding device including the guiding washer 104 and the guiding shaft 106, a resilient device including the first spring 105 and the second spring 108, and a bridge are provided.
- the movable contact device 107 and the bridge movable contact device 107 include a bridge body and a first movable contact 107a and a second movable contact 107b at both ends of the bridge body, and the first movable contact 107a and the second movable contact Opposite to 107b, a first stationary contact 112a and a second stationary contact 112b are disposed.
- the first and second stationary contacts are located in holes in the base and extend through the base 102 to form a first stationary spring leg 110.
- the second static spring leg 111 is sealed with an epoxy resin 109.
- one end of the temperature sensing body 103 is in contact with the inner wall of the temperature sensing chamber 101a, and the other end is in contact with the upper end surface of the guide gasket.
- a temperature sensing cavity 101a into which the temperature sensing body 103 can be inserted is disposed in the cavity formed by the non-metallic outer casing 101 and the base 102.
- the two sides of the temperature sensing cavity are respectively provided with a melting groove 101b, and the temperature sensing cavity 101a and the two melts. There is a through groove between the grooves 101b.
- the lower end of the guide washer 104 has a boss, and the lower end surface of the boss is provided with a recess which can cooperate with the guide shaft 106 and slide axially. Further, the boss of the guide pad 104 is provided with a guide groove 104a which cooperates with the axial rib 106a provided on the guide shaft 106 to prevent the rotation of the guide shaft 106.
- the lower end surface of the guide shaft 106 has a downward protrusion, and the center of the bridge movable contact device 107 is provided with a through hole opposite to the protrusion, and is mounted on the guide shaft by a protrusion and a bridge movable contact.
- the through hole on the handle 107 cooperates to rive the guide shaft to the center point of the bridge type movable contact device 107.
- a first spring 105 is formed around the guide shaft 106 between the guide washer 104 and the bridge movable contact device 107 in a compressed shape.
- the first spring 105 can maintain the contact pressure of the bridge moving contact device 107 and the first static spring leg 110 and the second static spring foot 111; Under the elastic force of the spring 105, the bridge movable contact device 107 is guided along the guide pad 104 and the guide shaft 106 without tilting due to assembly and external vibration.
- the guiding device and the elastic device can also be replaced with other suitable variant structures.
- the bridge movable contact device 107 includes a first movable contact 107a, a second movable contact 107b, and a bridge body, wherein the bridge body is a conductor, and the first movable contact 107A and the second movable contact 107b It is integrated with the bridge type moving contact device.
- the first movable contact 107a and the second movable contact 107b of the bridge movable contact device 107 are in close contact with the first stationary contact 112a and the second stationary contact 112b under the elastic force of the first spring 105.
- the first static spring leg 110 and the second static spring leg 111 are electrically connected.
- a spring hole coaxial with the first spring 105 is disposed between the two stepped holes on the base 102, and the spring hole is mounted with a second spring 108 that is compressed, whereby the second spring 108 is also coaxial with the first spring 105.
- the second spring 108 has one end acting on the inner wall of the spring hole and the other end acting on the bridge movable contact device 107; when the temperature sensing body 103 is turned from the solid state to the liquid state, the first spring 105 loses support, and the second spring 108 pushes the bridge movable contact device 107 upward, so that the first movable contact 107a and the second movable contact 107b are disengaged from the first stationary contact 112a and the second stationary contact 112b, respectively, and disconnected first
- the static spring leg 110 and the second static spring leg 111 are electrically connected.
- the static spring leg 110 and the second static spring leg 111 are electrically connected, so that the static contact heads of the first and second spring legs 111 are mounted in the stepped holes of the base 102, which are lower than the end faces of the base 102.
- the electrical clearance between the first static spring leg 110 and the second static spring leg 111 and the second spring is elongated.
- the first and second static contacts can be set as a plurality of sets of parallel contacts, and the bridge type moving contact device 107 is disposed on The corresponding multiple sets of parallel moving contacts are combined to increase the contact area and improve the flow capacity.
- a bridge type contact structure temperature sensing switch can be used as a normally open type over temperature switch to turn on a circuit when the temperature reaches a preset temperature.
- a temperature sensing body 203 In the cavity constructed by the non-metallic outer casing 201 and the insulating base 202, a temperature sensing body 203, a guiding device including the guiding washer 204 and the guiding shaft 206, and a resilient device including the first spring 205 and the second spring 208 are provided.
- the movable contact device 207 and the bridge movable contact device 207 include a bridge body and a first end at both ends of the bridge body
- the movable contact 107a and the second movable contact 107b are provided with a first stationary contact 212a and a second stationary contact 212b opposite to the first movable contact 107a and the second movable contact 107b, the first and second static The contact is located in the hole in the base, and extends through the base 202 to form a first static spring leg 210 and a second static spring leg 211, and is sealed by an epoxy resin 209.
- the first movable contact 207a and the first There is a certain electrical gap between a static contact 212a and between the second movable contact 207b and the second stationary contact 212b.
- two stepped through holes are provided on both sides of the base 202 to respectively mount a first static contact 212a and a second static contact 212b.
- the first and second static contacts are lower than the end surface of the base 202;
- a recessed portion is disposed in the middle of the two stepped holes 202 for mounting the temperature sensing body 203.
- One end of the temperature sensing body 203 acts on the inner wall of the base 202, and the other end is in contact with the boss guiding washer 204.
- the boss surface is provided with a counterbore and a guide.
- the shaft 206 cooperates to form an axially slidable portion, and the boss of the guide washer 204 is axially opened with a guide groove (not shown), and the guide groove and the axial rib (not shown) provided on the guide shaft 206
- the rotation of the guide shaft 206 can be controlled; the other end of the guide shaft 206 is riveted to the center point of the bridge movable contact device 207; and between the guide washer 204 and the bridge movable contact device 207, around the guide shaft 206
- There is a first spring 205 which is compressed; the bridge movable contact device 207 is guided by the guide washer 204 and the guide shaft 206 without inclination due to assembly or external vibration.
- a second spring 208 is formed which is coaxial with the first spring 205, and the second spring 208 acts on the bridge movable contact device 207.
- the other end acts on the inner wall of the outer casing 201, wherein the elastic force of the first spring 205 is greater than the elastic force of the second spring 208.
- the temperature of the temperature sensing body 203 rises to reach the operating temperature point.
- the temperature sensing body 203 changes from a solid state to a liquid state, and the guiding spacer 204 loses support, and the second spring 208 functions.
- the bridge movable contact device 207 moves toward the first stationary spring leg 210 and the second stationary spring leg 211, the first movable contact 207a is in contact with the first stationary contact 212a, and the second movable contact 207b is second.
- the stationary contacts 212b are in contact with each other to electrically connect the circuits of the first stationary spring leg 210 and the second stationary spring leg 211 to form a loop.
- the operation of the first spring 205 can be cancelled, and the guide washer 204 and the guide shaft 206 are integrated, but the following conditions must be met: the first movable contact 207a on the bridge movable contact device 207, The gap length between the second movable contact 207b and the first stationary spring 210, the first stationary contact 212a and the second stationary contact 212b on the second stationary spring 211 is greater than the softening length of the temperature sensing body 203. After the temperature sensing body 203 is softened, the gap value after the bridge movable contact device 207 moves toward the first stationary contact 212a and the second stationary contact 212b must be greater than the clearance safety value of the required through current.
- FIG. 5 is a schematic view showing a third embodiment of the present invention, a bridge contact structure thermal fuse It can be used as an over-temperature protection component for normally closed multi-breakpoints to improve the breaking capacity of the thermal fuse.
- a temperature sensing body 303 In the cavity constructed by the non-metallic outer casing 301 and the base 302, a temperature sensing body 303, a guiding washer 304, a first spring 305, a bridge movable contact device 306, a second spring 307, and a bridge movable contact are disposed.
- the device 306 includes a bridge body 600 and a first movable contact 403a and a second movable contact 403b at both ends of the bridge body, and a first stationary contact 312a is disposed opposite the first movable contact 403a and the second movable contact 403b.
- the second static contact 312b, the first and second static contacts are located in the hole in the base, and extend through the hole in the base 302 to form a first stationary spring leg 310 and a second static spring leg 311. Sealed with epoxy resin 309.
- One end of the temperature sensing body 303 acts on the inner cavity surface of the outer casing 301, and the other end is in contact with the guide pad 304 with the boss.
- the boss is axially sleeved with a first spring 305 in a compressed shape, and the first spring 305 is further One end acts on the bridge movable contact device 306.
- the bridge movable contact device 306 includes a non-metallic bridge 600 and movable contacts 403a-403d disposed on the bridge body 600, specifically, the bridge body 600 is symmetrically There are four shaft holes distributed, and moving contacts 403a-403d are arranged in each of the shaft holes.
- the first movable contact 403a and the second movable contact 403b are located in two axial holes at both ends, respectively opposite to the first stationary contact 312a and the second stationary contact 312b; the third movable contact 403c and the fourth dynamic The contact 403d is located in the other two shaft holes, and the third static contact 313a and the fourth static contact 313b respectively opposite to the third movable contact 403c and the fourth movable contact 403d are disposed on the base, wherein The three static contacts 313a and the fourth stationary contact 313b are electrically connected by a U-shaped contact tab 308 in the base.
- the tail portions of the movable contacts 403-403d are provided with a sleeve 402 riveted to the tail portion, wherein the tail sleeves of the first movable contact 403a and the third movable contact 403c are electrically connected by a soft strand 401, and the second movement
- the tail sleeves of the contacts 403b and the fourth movable contacts 403b are electrically connected by the soft strands 401; each of the movable contacts 403 has an elastic butterfly spring piece 404 along the axial direction of the shaft hole of the bridge body 600, To play a role in elasticity.
- the four movable contacts 403a-403d on the bridge movable contact device 306 are in close contact with the first to fourth stationary contacts, respectively, wherein the first stationary spring legs 310 pass through the first a static contact, a first movable contact, a third movable contact, a third stationary contact, a U-shaped contact connecting piece, a fourth stationary contact, a fourth movable contact, and a second movable contact
- the contact is electrically connected to the second stationary spring leg 311.
- a spring hole coaxial with the first spring 305 is disposed between the two stepped holes on the base 302.
- the spring hole is mounted with a compressed second spring 307, and one end of the second spring 307 acts on the inner wall of the spring hole, and One end acts on the bridge type spring mechanism 306.
- the first spring 305 loses support
- the second spring 307 pushes the bridge movable contact device 306, and the bridge type dynamic touch
- All of the movable contacts on the pointing device are separated from the corresponding stationary contacts, and the electrical connection between the first stationary spring leg 110, the contact connecting piece 308, and the second stationary spring leg 111 is broken.
- the multi-breakpoint structure in this embodiment can ensure that the arc is cut off in time, and the breaking ability of the product is improved.
- a mounting hole 101c may be provided on both sides of the bottom end surface of the outer casing 101, or a mounting hole 101d may be provided at the bottom end surface for mounting temperature sensing, which is more effective. Protect the safety of the line.
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Thermally Actuated Switches (AREA)
Abstract
A temperature-sensing switch in a bridge-type contact structure; the switch utilizes a state-changing characteristic of a temperature-sensing element (103) at a predetermined temperature, and by providing an elastic device and driving a bridge-type movable spring structure, the switch achieves separation or engagement of movable contacts (107a and 107b) and static contacts (112a and 112b), and further achieves turn-on and turn-off of a wire between two static spring feet (110 and 111). Thus, an active temperature switch is provided, which is used for protection against catastrophic thermal runaway and for end-user safety protection. The switch may interrupt electric current when a power device is heated to a special-rated trip temperature thereof. Furthermore, an active temperature-sensing switch is also provided, which may turn on an alarm circuit when the ambient temperature reaches a preset temperature and sound an alarm.
Description
本申请要求在2016年6月15日提交中国专利局、申请号为201610422273.4、发明名称为“一种桥式触点结构感温开关”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。The present application claims priority to Chinese Patent Application No. 201610422273.4, entitled "A Bridge Contact Structure Temperature Sensing Switch", which is filed on June 15, 2016, the entire contents of which are incorporated by reference. In this application.
本发明涉及一种感温开关，尤其涉及一种桥式触点结构感温开关。The invention relates to a temperature sensing switch, in particular to a bridge type contact structure temperature sensing switch.
在现代工业电子和消费电子设备中，产品的功能性越来越强，而它们的尺寸和重量却在不断缩减，这只有通过元器件和***基底的集成化和小型化才能得以实现。在产品的集成化和小型化过程中存在着一个问题，过度的元器件集中，必然导致了产品在工作过程中容易发热，不易散热，对电子电路存在着一定的安全隐患。In modern industrial electronics and consumer electronics, products are becoming more functional, and their size and weight are shrinking, which can only be achieved through the integration and miniaturization of components and system substrates. There is a problem in the process of product integration and miniaturization. Excessive concentration of components will inevitably lead to the product being prone to heat during the working process, and it is not easy to dissipate heat. There is a certain safety hazard to the electronic circuit.
在进行热管理设计时，由电阻和电容负荷、电力电容器、电流驱动器、开关、继电器和MOSFET所产生的热量给工程师带来了重大的挑战。这些发热元件常常可以在诸如机车牵引电动机和混合动力车辆的开关电源(SMPS)、高压电源和开关应用中发现。The heat generated by resistor and capacitor loads, power capacitors, current drivers, switches, relays, and MOSFETs poses significant challenges for engineers when designing thermal management. These heating elements are often found in switching power supplies (SMPS), high voltage power supplies, and switching applications such as locomotive traction motors and hybrid vehicles.
提高功率器件性能、使用更均匀散热的设计技术、采用新的散热器材料是目前已经用于增强热管理性能的一些解决方案。不过，很多设计方案目前依赖二级保护来防止因功率器件故障或腐蚀导致发热而产生的热失控。Improvements in power device performance, design techniques that use more uniform heat dissipation, and the use of new heat sink materials are some of the solutions that have been used to enhance thermal management performance. However, many designs currently rely on secondary protection to prevent thermal runaway due to heat device failure or corrosion.
一方面，我们在设计应用于灾难性热失控和最终用户安全的保护中，需要一种感温开关，可在一个功率器件被加热到其特殊的额定跳闸温度时通过中断电流。On the one hand, we design a protection switch for catastrophic thermal runaway and end-user safety that requires a temperature-sensing switch that interrupts current when a power device is heated to its particular rated trip temperature.
另一方面，在温度报警电路中，需要有一种温度敏感开关，能在环境温度达到预设温度时导通报警电路，发出警报。On the other hand, in the temperature alarm circuit, a temperature sensitive switch is needed to turn on the alarm circuit and issue an alarm when the ambient temperature reaches a preset temperature.
发明内容Summary of the invention
为了解决上述问题，本发明提供了一种桥式触点结构感温开关，包括由外壳和绝缘底座形成的腔体、感温体、弹性装置、桥式动触点装置、静触点
装置；其中感温体、弹性装置和桥式动触点装置位于上述述腔体中，桥式动触点装置包括桥体、第一动触点和第二动触点；静触点装置包括与第一动触点和第二动触点相对应的第一静触点和第二静触点，第一静触点和第二静触点位于底座上的孔中并分别穿过该孔向外延伸形成第一静簧脚和第二静簧脚；该感温开关还包括导向装置，导向装置具有与感温体相接触的第一端和与桥式动触点装置相连接的第二端，当感温体熔化时，弹性装置带动桥式动触点装置沿导向装置轴向运动，实现动触点和静触点之间的接触或分离，从而导通或断开第一静簧脚和第二静簧脚之间的电连接。In order to solve the above problems, the present invention provides a bridge type contact structure temperature sensitive switch, comprising a cavity formed by a casing and an insulating base, a temperature sensing body, an elastic device, a bridge movable contact device, and a static contact.
The device; wherein the temperature sensing body, the elastic device and the bridge movable contact device are located in the cavity, the bridge movable contact device comprises a bridge body, a first movable contact and a second movable contact; the static contact device comprises a first stationary contact and a second stationary contact corresponding to the first movable contact and the second movable contact, the first stationary contact and the second stationary contact being located in the hole in the base and passing through the hole respectively Extending outwardly to form a first stationary spring leg and a second static spring leg; the temperature sensing switch further comprising a guiding device having a first end in contact with the temperature sensing body and a first connection with the bridge movable contact device At the two ends, when the temperature sensing body is melted, the elastic device drives the bridge type moving contact device to move axially along the guiding device, thereby achieving contact or separation between the moving contact and the static contact, thereby turning on or off the first static Electrical connection between the spring foot and the second stationary spring foot.
优选地，导向装置包括导向垫片和导向轴，导向垫片的端面与感温体相接触，导向轴连接至桥式动触点装置并具有轴向导向凸棱，导向垫片上开有与导向凸棱相配合的导向槽。Preferably, the guiding device comprises a guiding washer and a guiding shaft, the end surface of the guiding gasket is in contact with the temperature sensing body, the guiding shaft is connected to the bridge movable contact device and has an axial guiding rib, and the guiding gasket is opened Guide grooves with guiding ribs.
优选地，弹性装置包括第一弹性件和第二弹性件，第一弹性件位于感温体与桥式动触点装置之间，第二弹性件位于桥式动触点装置与腔体的内壁之间，第一弹性件的弹力大于第二弹性件的弹力。Preferably, the elastic device comprises a first elastic member located between the temperature sensing body and the bridge movable contact device, and a second elastic member located at the inner wall of the bridge movable contact device and the cavity The elastic force of the first elastic member is greater than the elastic force of the second elastic member.
优选地，桥体为导体，第一动触点和第二动触点之间通过桥体导通。Preferably, the bridge body is a conductor, and the first movable contact and the second movable contact are electrically connected through the bridge body.
可选择地，桥体为绝缘体，桥式动触点装置还包括第三动触点和第四动触点，静触点装置还包括相互连接的第三静触点和第四静触点，第三静触点和第四静触点之间通过位于底座中的U型触点连接片电连接，第三静触点和第四静触点分别与第三动触点和第四动触点相对应，第三动触点与第一动触点电连接，第四动触点与第二动触点电连接，相应的动触点和的静触点之间同步接触或分离，从而实现第一静簧脚和第二静簧脚之间的导通或断开。Optionally, the bridge body is an insulator, the bridge movable contact device further includes a third movable contact and a fourth movable contact, and the static contact device further includes a third fixed contact and a fourth fixed contact connected to each other, The third stationary contact and the fourth stationary contact are electrically connected by a U-shaped contact piece located in the base, and the third stationary contact and the fourth stationary contact are respectively connected to the third movable contact and the fourth dynamic contact Correspondingly, the third movable contact is electrically connected to the first movable contact, the fourth movable contact is electrically connected to the second movable contact, and the corresponding movable contact and the stationary contact are synchronously contacted or separated, thereby The conduction or disconnection between the first stationary spring foot and the second static spring foot is achieved.
优选地，动触点位于桥体的孔中并且带有蝶形弹簧片。Preferably, the moving contact is located in the bore of the bridge body and has a butterfly spring piece.
优选地，底座上的孔为阶梯孔，使得静触点缩进底座中。Preferably, the aperture in the base is a stepped aperture such that the static contact is retracted into the base.
优选地，动触点和静触点均为多组并联触点。Preferably, the movable contact and the stationary contact are a plurality of sets of parallel contacts.
优选地，腔体内具有容纳感温体的感温腔，感温腔的两侧设有熔化槽，感温腔与熔化槽之间具有贯通槽。Preferably, the cavity has a temperature sensing cavity for accommodating the temperature sensing body, and both sides of the temperature sensing cavity are provided with a melting groove, and the temperature sensing cavity and the melting groove have a through groove.
优选地，外壳的外表面上可设置安装孔。Preferably, a mounting hole may be provided on the outer surface of the outer casing.
参考下面附图，对本发明作进一步说明，其中：The invention will be further described with reference to the following figures, in which:
图1是本使用新型实施例一的剖视图，其中感温体为固态；Figure 1 is a cross-sectional view showing a first embodiment of the present invention, wherein the temperature sensing body is solid;
图2是图1所示的结构的立体***图；
Figure 2 is a perspective exploded view of the structure shown in Figure 1;
图3是本发明实施例一的剖视图，其中感温体为液态；Figure 3 is a cross-sectional view showing a first embodiment of the present invention, wherein the temperature sensing body is in a liquid state;
图4是本发明实施例二的剖视图；Figure 4 is a cross-sectional view showing a second embodiment of the present invention;
图5是本发明实施例三的剖视图；Figure 5 is a cross-sectional view showing a third embodiment of the present invention;
图6是本发明实施例一、二、三的端面安装方式图；Figure 6 is a side view showing the mounting manner of the end faces according to the first, second and third embodiments of the present invention;
图7是本发明实施例一、二、三的侧面安装方式图。Fig. 7 is a side view showing the mounting manner of the first, second and third embodiments of the present invention.
在下文中，将参照附图以实施例的方式对本发明进行具体描述，所涉及实施例仅为本发明的优选实施例，并不用于限制本发明，尽管参照实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但是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。The present invention will be described in detail with reference to the accompanying drawings, the preferred embodiments of the present invention For those skilled in the art, the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced, but any of the features made within the spirit and principles of the present invention. Modifications, equivalent substitutions, improvements, etc., are intended to be included within the scope of the present invention.
参见图1至图3，根据本发明的一种桥式触点结构感温开关可为常闭型的过温保护件。在非金属外壳101与绝缘底座102所构造的腔体内，设有感温体103、包括导向垫片104和导向轴106的导向装置，包括第一弹簧105和第二弹簧108的弹性装置、桥式动触点装置107、桥式动触点装置107包括桥体和位于桥体两端的第一动触点107a和第二动触点107b，在第一动触点107a和第二动触点107b的对面设置有第一静触点112a和第二静触点112b，第一和第二静触点位于底座上的孔中，并穿过底座102向腔体外延伸形成第一静簧脚110、第二静簧脚111，并采用环氧树脂109进行封口。Referring to FIG. 1 to FIG. 3, a bridge type contact structure temperature sensitive switch according to the present invention may be a normally closed type over temperature protection member. In the cavity constructed by the non-metallic outer casing 101 and the insulating base 102, a temperature sensing body 103, a guiding device including the guiding washer 104 and the guiding shaft 106, a resilient device including the first spring 105 and the second spring 108, and a bridge are provided. The movable contact device 107 and the bridge movable contact device 107 include a bridge body and a first movable contact 107a and a second movable contact 107b at both ends of the bridge body, and the first movable contact 107a and the second movable contact Opposite to 107b, a first stationary contact 112a and a second stationary contact 112b are disposed. The first and second stationary contacts are located in holes in the base and extend through the base 102 to form a first stationary spring leg 110. The second static spring leg 111 is sealed with an epoxy resin 109.
如图1-3所示，感温体103一端与感温腔101a的内壁相接触，另一端与导向垫片的上端面相接触。优选地，在非金属外壳101与底座102所构造的腔体内设有一可装入感温体103的感温腔101a，感温腔两侧各设有熔化槽101b，感温腔101a与两熔化槽101b间存在贯通槽，当感温体103受热由固态转为液态时，液态的感温体103可往两侧的熔化槽101b流动，有利于引流液态的感温体，防止其滞留在导向垫片和腔体之间，影响开关效果。导向垫片104的下端具有凸台，凸台的下端面设有一凹部，该凹部可与导向轴106相配合并轴向滑动。而且，导向垫片104的凸台上开有导向槽104a，该导向槽104a与设于导向轴106的轴向凸棱106a配合，可防止导向轴106的旋转。导向轴106的下端面上具有向下的突起，桥式动触点装置107的中心点上设置有与该突起相对的通孔，通过导向轴上的突起与桥式动触点装
置107上的通孔配合将该导向轴铆接于桥式动触点装置107的中心点上。在导向垫片104与桥式动触点装置107之间围绕导向轴106设有呈压缩状的第一弹簧105。当感温体103软化时，感温体103长度收缩，第一弹簧105可保持桥式动触点装置107与第一静簧脚110及第二静簧脚111的触点压力；在第一弹簧105的弹力作用下，桥式动触点装置107沿导向垫片104及导向轴106的导向，不会因装配、外界振动造成倾斜。当然，导向装置和弹性装置也可以替换为其他的合适的变体结构。As shown in FIG. 1-3, one end of the temperature sensing body 103 is in contact with the inner wall of the temperature sensing chamber 101a, and the other end is in contact with the upper end surface of the guide gasket. Preferably, a temperature sensing cavity 101a into which the temperature sensing body 103 can be inserted is disposed in the cavity formed by the non-metallic outer casing 101 and the base 102. The two sides of the temperature sensing cavity are respectively provided with a melting groove 101b, and the temperature sensing cavity 101a and the two melts. There is a through groove between the grooves 101b. When the temperature sensing body 103 is heated from a solid state to a liquid state, the liquid temperature sensing body 103 can flow to the melting grooves 101b on both sides, which is advantageous for draining the liquid temperature sensing body and preventing it from staying in the guide. Between the gasket and the cavity, affecting the switching effect. The lower end of the guide washer 104 has a boss, and the lower end surface of the boss is provided with a recess which can cooperate with the guide shaft 106 and slide axially. Further, the boss of the guide pad 104 is provided with a guide groove 104a which cooperates with the axial rib 106a provided on the guide shaft 106 to prevent the rotation of the guide shaft 106. The lower end surface of the guide shaft 106 has a downward protrusion, and the center of the bridge movable contact device 107 is provided with a through hole opposite to the protrusion, and is mounted on the guide shaft by a protrusion and a bridge movable contact.
The through hole on the handle 107 cooperates to rive the guide shaft to the center point of the bridge type movable contact device 107. A first spring 105 is formed around the guide shaft 106 between the guide washer 104 and the bridge movable contact device 107 in a compressed shape. When the temperature sensing body 103 is softened, the length of the temperature sensing body 103 is contracted, and the first spring 105 can maintain the contact pressure of the bridge moving contact device 107 and the first static spring leg 110 and the second static spring foot 111; Under the elastic force of the spring 105, the bridge movable contact device 107 is guided along the guide pad 104 and the guide shaft 106 without tilting due to assembly and external vibration. Of course, the guiding device and the elastic device can also be replaced with other suitable variant structures.
在该实施例中，桥式动触点装置107包括第一动触点107a、第二动触点107b以及桥体，其中桥体为导体，第一动触点107A和第二动触点107b与桥式动触点装置为一体化结构。在第一弹簧105的弹力作用下，桥式动触点装置107上的第一动触点107a、第二动触点107b与第一静触点112a、第二静触点112b与紧密接触，第一静簧脚110和第二静簧脚111之间导通。In this embodiment, the bridge movable contact device 107 includes a first movable contact 107a, a second movable contact 107b, and a bridge body, wherein the bridge body is a conductor, and the first movable contact 107A and the second movable contact 107b It is integrated with the bridge type moving contact device. The first movable contact 107a and the second movable contact 107b of the bridge movable contact device 107 are in close contact with the first stationary contact 112a and the second stationary contact 112b under the elastic force of the first spring 105. The first static spring leg 110 and the second static spring leg 111 are electrically connected.
底座102上的两阶梯孔之间设有与第一弹簧105同轴的弹簧孔，弹簧孔安装有呈压缩状的第二弹簧108，由此该第二弹簧108也与第一弹簧105同轴，第二弹簧108的一端作用在弹簧孔的内壁上，另一端作用在桥式动触点装置107上；当感温体103由固态转为液态时，第一弹簧105失去支撑，第二弹簧108推动桥式动触点装置107向上移动，使第一动触点107a，第二动触点107b分别脱开与第一静触点112a和第二静触点112b的接触，断开第一静簧脚110、第二静簧脚111之间电连接。A spring hole coaxial with the first spring 105 is disposed between the two stepped holes on the base 102, and the spring hole is mounted with a second spring 108 that is compressed, whereby the second spring 108 is also coaxial with the first spring 105. The second spring 108 has one end acting on the inner wall of the spring hole and the other end acting on the bridge movable contact device 107; when the temperature sensing body 103 is turned from the solid state to the liquid state, the first spring 105 loses support, and the second spring 108 pushes the bridge movable contact device 107 upward, so that the first movable contact 107a and the second movable contact 107b are disengaged from the first stationary contact 112a and the second stationary contact 112b, respectively, and disconnected first The static spring leg 110 and the second static spring leg 111 are electrically connected.
第一动触点107a、第二动触点107b脱开第一静触点112a和第二静触点112b时会产生拉弧，拉弧有可能击穿电气间隙，通过第二弹簧108形成第一静簧脚110与第二静簧脚111的导通，故将第一静簧脚110及第二静簧脚111的静触点头安装在底座102的阶梯孔中，低于底座102的端面，拉长第一静簧脚110及第二静簧脚111与第二弹簧的电气间隙。When the first movable contact 107a and the second movable contact 107b are disengaged from the first stationary contact 112a and the second stationary contact 112b, a pulling arc is generated, and the arcing may break through the electrical gap and form a second through the second spring 108. The static spring leg 110 and the second static spring leg 111 are electrically connected, so that the static contact heads of the first and second spring legs 111 are mounted in the stepped holes of the base 102, which are lower than the end faces of the base 102. The electrical clearance between the first static spring leg 110 and the second static spring leg 111 and the second spring is elongated.
为提高桥式动触点装置与第一、第二静簧脚的通流能力，可将第一、第二静触点设为多组并联触点，桥式动触点装置107上设置与之对应的多组并联动触点联来增加接触面积，提高通流能力。In order to improve the flow capacity of the bridge type moving contact device and the first and second static spring legs, the first and second static contacts can be set as a plurality of sets of parallel contacts, and the bridge type moving contact device 107 is disposed on The corresponding multiple sets of parallel moving contacts are combined to increase the contact area and improve the flow capacity.
图4示出了本发明实施例二的示意图，一种桥式触点结构感温开关可作为常开型的过温开关，在温度达到预设温度时导通电路。在非金属外壳201与绝缘底座202所构造的腔体内，设有感温体203、包括导向垫片204和导向轴206的导向装置，包括第一弹簧205和第二弹簧208的弹性装置、桥式动触点装置207、桥式动触点装置207包括桥体和位于桥体两端的第一
动触点107a和第二动触点107b，在第一动触点107a和第二动触点107b的对面设置有第一静触点212a和第二静触点212b，第一和第二静触点位于底座上的孔中，并穿过底座202向腔体外延伸形成第一静簧脚210、第二静簧脚211，并采用环氧树脂209进行封口，第一动触点207a与第一静触点212a之间、第二动触点207b与第二静触点212b之间存在着一定的电气间隙。4 is a schematic diagram of a second embodiment of the present invention. A bridge type contact structure temperature sensing switch can be used as a normally open type over temperature switch to turn on a circuit when the temperature reaches a preset temperature. In the cavity constructed by the non-metallic outer casing 201 and the insulating base 202, a temperature sensing body 203, a guiding device including the guiding washer 204 and the guiding shaft 206, and a resilient device including the first spring 205 and the second spring 208 are provided. The movable contact device 207 and the bridge movable contact device 207 include a bridge body and a first end at both ends of the bridge body
The movable contact 107a and the second movable contact 107b are provided with a first stationary contact 212a and a second stationary contact 212b opposite to the first movable contact 107a and the second movable contact 107b, the first and second static The contact is located in the hole in the base, and extends through the base 202 to form a first static spring leg 210 and a second static spring leg 211, and is sealed by an epoxy resin 209. The first movable contact 207a and the first There is a certain electrical gap between a static contact 212a and between the second movable contact 207b and the second stationary contact 212b.
如图4所示，底座202上两侧设有两阶梯通孔分别安装第一静触点212a和第二静触点212b，该第一和第二静触点低于底座202端面；在底座202的两阶梯孔中间设有一凹部，用于安装感温体203，感温体203一端作用在底座202的内壁上，另一端与凸台导向垫片204接触，凸台面设有一沉孔与导向轴206相配合，形成轴向可滑动，并且导向垫片204的凸台轴向开有导向槽(未示出)，该导向槽与设于导向轴206的轴向凸棱(未示出)配合，可控制导向轴206的旋转；导向轴206的另一端铆接于桥式动触点装置207的中心点上；在导向垫片204与桥式动触点装置207间，围绕导向轴206设有呈压缩状的第一弹簧205；桥式动触点装置207在导向垫片204及导向轴206的导向下，不会因装配、外界振动造成倾斜。As shown in FIG. 4, two stepped through holes are provided on both sides of the base 202 to respectively mount a first static contact 212a and a second static contact 212b. The first and second static contacts are lower than the end surface of the base 202; A recessed portion is disposed in the middle of the two stepped holes 202 for mounting the temperature sensing body 203. One end of the temperature sensing body 203 acts on the inner wall of the base 202, and the other end is in contact with the boss guiding washer 204. The boss surface is provided with a counterbore and a guide. The shaft 206 cooperates to form an axially slidable portion, and the boss of the guide washer 204 is axially opened with a guide groove (not shown), and the guide groove and the axial rib (not shown) provided on the guide shaft 206 The rotation of the guide shaft 206 can be controlled; the other end of the guide shaft 206 is riveted to the center point of the bridge movable contact device 207; and between the guide washer 204 and the bridge movable contact device 207, around the guide shaft 206 There is a first spring 205 which is compressed; the bridge movable contact device 207 is guided by the guide washer 204 and the guide shaft 206 without inclination due to assembly or external vibration.
在桥式动触点装置207背离第一弹簧205的另一面，设有与第一弹簧205同轴的呈压缩状的第二弹簧208，第二弹簧208一端作用在桥式动触点装置207上，另一端作用在外壳201的内壁上，其中第一弹簧205的弹力大于第二弹簧208的弹力。On the other side of the bridge movable contact device 207 facing away from the first spring 205, a second spring 208 is formed which is coaxial with the first spring 205, and the second spring 208 acts on the bridge movable contact device 207. The other end acts on the inner wall of the outer casing 201, wherein the elastic force of the first spring 205 is greater than the elastic force of the second spring 208.
在外界温度异常升高时，感温体203的温度随之升高，达到动作温度点，此时感温体203由固态转为液态，导向垫片204失去支撑，在第二弹簧208的作用下，桥式动触点装置207朝向第一静簧脚210、第二静簧脚211运动，第一动触点207a与第一静触点212a相接触、第二动触点207b与第二静触点212b相接触，使第一静簧脚210及第二静簧脚211的电路导通，形成回路。When the external temperature rises abnormally, the temperature of the temperature sensing body 203 rises to reach the operating temperature point. At this time, the temperature sensing body 203 changes from a solid state to a liquid state, and the guiding spacer 204 loses support, and the second spring 208 functions. Next, the bridge movable contact device 207 moves toward the first stationary spring leg 210 and the second stationary spring leg 211, the first movable contact 207a is in contact with the first stationary contact 212a, and the second movable contact 207b is second. The stationary contacts 212b are in contact with each other to electrically connect the circuits of the first stationary spring leg 210 and the second stationary spring leg 211 to form a loop.
在一定的场合中，可取消第一弹簧205的运用，将导向垫片204与导向轴206设为一体，但必须满足下列条件：桥式动触点装置207上的第一动触点207a、第二动触点207b与第一静簧脚210、第二静簧脚211上的第一静触点212a和第二静触点212b之间的电气间隙长度大于感温体203的软化长度变化值；且感温体203软化后，桥式动触点装置207朝第一静触点212a和第二静触点212b移动后的间隙值必须大于所需通流的电气间隙安全值。In a certain occasion, the operation of the first spring 205 can be cancelled, and the guide washer 204 and the guide shaft 206 are integrated, but the following conditions must be met: the first movable contact 207a on the bridge movable contact device 207, The gap length between the second movable contact 207b and the first stationary spring 210, the first stationary contact 212a and the second stationary contact 212b on the second stationary spring 211 is greater than the softening length of the temperature sensing body 203. After the temperature sensing body 203 is softened, the gap value after the bridge movable contact device 207 moves toward the first stationary contact 212a and the second stationary contact 212b must be greater than the clearance safety value of the required through current.
图5示出了本发明实施例三的示意图，一种桥式触点结构温度保险丝
可作为常闭型多断点的过温保护件，来提高温度保险丝的分断能力。在非金属的外壳301与底座302所构造的腔体内，设有感温体303、导向垫片304、第一弹簧305、桥式动触点装置306、第二弹簧307、桥式动触点装置306包括桥体600和位于桥体两端的第一动触点403a和第二动触点403b，在第一动触点403a和第二动触点403b的对面设置有第一静触点312a和第二静触点312b，第一和第二静触点位于底座上的孔中，并穿过底座302上的孔向腔体外延伸形成第一静簧脚310、第二静簧脚311，并采用环氧树脂309进行封口。感温体303的一端作用在外壳301内腔面，另一端与带凸台的导向垫片304相接触，凸台轴向套设有一呈压缩状的第一弹簧305，第一弹簧305的另一端作用在桥式动触点装置306上。FIG. 5 is a schematic view showing a third embodiment of the present invention, a bridge contact structure thermal fuse
It can be used as an over-temperature protection component for normally closed multi-breakpoints to improve the breaking capacity of the thermal fuse. In the cavity constructed by the non-metallic outer casing 301 and the base 302, a temperature sensing body 303, a guiding washer 304, a first spring 305, a bridge movable contact device 306, a second spring 307, and a bridge movable contact are disposed. The device 306 includes a bridge body 600 and a first movable contact 403a and a second movable contact 403b at both ends of the bridge body, and a first stationary contact 312a is disposed opposite the first movable contact 403a and the second movable contact 403b. And the second static contact 312b, the first and second static contacts are located in the hole in the base, and extend through the hole in the base 302 to form a first stationary spring leg 310 and a second static spring leg 311. Sealed with epoxy resin 309. One end of the temperature sensing body 303 acts on the inner cavity surface of the outer casing 301, and the other end is in contact with the guide pad 304 with the boss. The boss is axially sleeved with a first spring 305 in a compressed shape, and the first spring 305 is further One end acts on the bridge movable contact device 306.
与实施例1不同，在该实施例中，桥式动触点装置306包括非金属的桥体600和设置在桥架体600上的动触点403a-403d，具体地，桥架体600上对称地分布有4个轴孔，各个轴孔中设置动触点403a-403d。其中第一动触点403a和第二动触点403b位于两端的两个轴孔中，分别与第一静触点312a和第二静触点312b相对；第三动触点403c和第四动触点403d位于另外的两个轴孔中，在底座上设置有分别与第三动触点403c和第四动触点403d相对的第三静触点313a和第四静触点313b，其中第三静触点313a和第四静触点313b之间通过底座中的U形触点连接片308电连接。Unlike the embodiment 1, in this embodiment, the bridge movable contact device 306 includes a non-metallic bridge 600 and movable contacts 403a-403d disposed on the bridge body 600, specifically, the bridge body 600 is symmetrically There are four shaft holes distributed, and moving contacts 403a-403d are arranged in each of the shaft holes. The first movable contact 403a and the second movable contact 403b are located in two axial holes at both ends, respectively opposite to the first stationary contact 312a and the second stationary contact 312b; the third movable contact 403c and the fourth dynamic The contact 403d is located in the other two shaft holes, and the third static contact 313a and the fourth static contact 313b respectively opposite to the third movable contact 403c and the fourth movable contact 403d are disposed on the base, wherein The three static contacts 313a and the fourth stationary contact 313b are electrically connected by a U-shaped contact tab 308 in the base.
动触点403-403d的尾部设有与该尾部铆接的套筒402，其中第一动触点403a和第三动触点403c的尾部套筒之间通过软股线401电连接，第二动触点403b和第四动触点403b的尾部套筒之间通过软股线401电连接；各动触点403在桥体600的轴孔上沿轴向都具有带弹性蝶型弹簧片404，以起到弹性作用。The tail portions of the movable contacts 403-403d are provided with a sleeve 402 riveted to the tail portion, wherein the tail sleeves of the first movable contact 403a and the third movable contact 403c are electrically connected by a soft strand 401, and the second movement The tail sleeves of the contacts 403b and the fourth movable contacts 403b are electrically connected by the soft strands 401; each of the movable contacts 403 has an elastic butterfly spring piece 404 along the axial direction of the shaft hole of the bridge body 600, To play a role in elasticity.
在第一弹簧305的弹力作用下，桥式动触点装置306上的四个动触点403a-403d分别与第一至第四静触点紧密接触，其中第一静簧脚310依次通过第一静触点、第一动触点、第三动触点、第三静触点、U形触点连接片、第四静触点、第四动触点以及第二动触点第二静触点电连接至第二静簧脚311。Under the elastic force of the first spring 305, the four movable contacts 403a-403d on the bridge movable contact device 306 are in close contact with the first to fourth stationary contacts, respectively, wherein the first stationary spring legs 310 pass through the first a static contact, a first movable contact, a third movable contact, a third stationary contact, a U-shaped contact connecting piece, a fourth stationary contact, a fourth movable contact, and a second movable contact The contact is electrically connected to the second stationary spring leg 311.
底座302上的两阶梯孔之间设有与第一弹簧305同轴的弹簧孔，弹簧孔安装有呈压缩状的第二弹簧307，第二弹簧307的一端作用在弹簧孔的内壁上，另一端作用在桥式动簧机构306上。当感温体303由固态转为液态时，第一弹簧305失去支撑，第二弹簧307推动桥式动触点装置306，桥式动触
点装置上的所有动触点与对面相应的静触点分离，第一静簧脚110、触点连接片308、第二静簧脚111之间的电连接断开。该实施例中的多断点结构可以确保及时切断拉弧，提高了产品的分断能力A spring hole coaxial with the first spring 305 is disposed between the two stepped holes on the base 302. The spring hole is mounted with a compressed second spring 307, and one end of the second spring 307 acts on the inner wall of the spring hole, and One end acts on the bridge type spring mechanism 306. When the temperature sensing body 303 is turned from a solid state to a liquid state, the first spring 305 loses support, and the second spring 307 pushes the bridge movable contact device 306, and the bridge type dynamic touch
All of the movable contacts on the pointing device are separated from the corresponding stationary contacts, and the electrical connection between the first stationary spring leg 110, the contact connecting piece 308, and the second stationary spring leg 111 is broken. The multi-breakpoint structure in this embodiment can ensure that the arc is cut off in time, and the breaking ability of the product is improved.
如图6至7所示，为更好的贴紧发热源，可在外壳101的底端面的两侧设有安装孔101c，或在底端面设置安装孔101d，以便安装感温，更有效的保护线路的安全。As shown in FIGS. 6 to 7, in order to better contact the heat source, a mounting hole 101c may be provided on both sides of the bottom end surface of the outer casing 101, or a mounting hole 101d may be provided at the bottom end surface for mounting temperature sensing, which is more effective. Protect the safety of the line.
对于本领域技术人员而言，很容易想到本发明的多种修改和其他实施方式，本发明在前述说明书和相关的附图中所示出的内容具有有益的技术启示。因此，本发明仅公开了较佳的实施方式，并不局限于所公开的特定实施例，还意图包括所附权利要求范围内所请求保护的多种修改和其他实施方式。尽管本文中使用了一些特定术语，但它们是仅用于通用和描述性的意义，并且不构成限制。
Numerous modifications and other embodiments of the invention will be apparent to those skilled in the <RTIgt; Therefore, the present invention is intended to be limited only by the preferred embodiments of the invention, Although specific terms are employed herein, they are used in a generic and descriptive sense only and are not limiting.
Claims (10)
- 一种桥式触点结构感温开关，包括由外壳形成的腔体、感温体、弹性装置、桥式动触点装置、静触点装置；其中所述感温体、弹性装置和桥式动触点装置位于所述腔体中，所述桥式动触点装置包括桥体、第一动触点和第二动触点；所述静触点装置包括与第一动触点和第二动触点相对应的第一静触点和第二静触点，所述第一静触点和第二静触点位于外壳内并向外延伸形成第一静簧脚和第二静簧脚；其特征在于，所述感温开关还包括导向装置，所述导向装置具有与感温体相接触的第一端和与所述桥式动触点装置相连接的第二端，当所述感温体熔化时，所述弹性装置带动所述桥式动触点装置沿导向装置轴向运动，实现动触点和静触点之间的接触或分离，从而导通或断开第一静簧脚和第二静簧脚之间的电连接。Bridge type contact structure temperature sensing switch, comprising a cavity formed by a casing, a temperature sensing body, an elastic device, a bridge movable contact device, a static contact device; wherein the temperature sensing body, the elastic device and the bridge type a movable contact device is disposed in the cavity, the bridge movable contact device includes a bridge body, a first movable contact and a second movable contact; the static contact device includes a first movable contact and a first a first stationary contact and a second stationary contact corresponding to the second movable contact, wherein the first stationary contact and the second stationary contact are located in the outer casing and extend outward to form a first stationary spring leg and a second static spring a foot; wherein the temperature sensing switch further comprises a guiding device having a first end in contact with the temperature sensing body and a second end connected to the bridge movable contact device, When the temperature sensitive body is melted, the elastic device drives the bridge type moving contact device to move axially along the guiding device to realize contact or separation between the movable contact and the static contact, thereby turning on or off the first An electrical connection between the stationary spring foot and the second stationary spring foot.
- 根据权利要求1所述的感温开关，其特征在于，所述外壳可以是有绝缘包封材料、塑料等形成的外壳，也可以是由外壳和绝缘底座形成的外壳的外表面上可设置安装孔。The temperature sensing switch according to claim 1, wherein the outer casing may be an outer casing formed of an insulating encapsulating material, plastic or the like, or may be installed on an outer surface of the outer casing formed by the outer casing and the insulating base. hole.
- 如权利要求1所述的感温开关，其特征在于，所述导向装置包括导向垫片和导向轴，所述导向垫片的端面与所述感温体相接触，所述导向轴连接至桥式动触点装置并具有轴向导向凸棱，所述导向垫片上开有与所述导向凸棱相配合的导向槽。A temperature sensitive switch according to claim 1, wherein said guiding means comprises a guide pad and a guide shaft, an end surface of said guide pad is in contact with said temperature sensing body, said guide shaft being connected to the bridge The movable contact device has an axial guiding rib, and the guiding washer is provided with a guiding groove matched with the guiding rib.
- 根据权利要求1所述的感温开关，其特征在于，所述弹性装置包括第一弹性件和第二弹性件，所述第一弹性件位于所述感温体与所述桥式动触点装置之间，所述第二弹性件位于所述桥式动触点装置与所述腔体的内壁之间，所述第一弹性件的弹力大于所述第二弹性件的弹力。The temperature sensing switch according to claim 1, wherein said elastic means comprises a first elastic member and a second elastic member, said first elastic member being located at said temperature sensing body and said bridge movable contact Between the devices, the second elastic member is located between the bridge movable contact device and the inner wall of the cavity, and the elastic force of the first elastic member is greater than the elastic force of the second elastic member.
- 根据权利要求1所述的感温开关，其特征在于，所述桥体为导体，所述第一动触点和第二动触点之间通过桥体导通。The temperature sensing switch according to claim 1, wherein the bridge body is a conductor, and the first movable contact and the second movable contact are electrically connected by a bridge body.
- 根据权利要求1所述的感温开关，其特征在于，所述桥体为绝缘体，所述桥式动触点装置还包括第三动触点和第四动触点，所述静触点装置还包括相互连接的第三静触点和第四静触点，所述第三静触点和第四静触点之间通过U型触点连接片电连接，所述触点连接片位于所述底座中，所述第三静触点和第四静触点分别与第三动触点和第四动触点相对应，所述第三动触点与所述第一动触点电连接，所述第四动触点与所述第二动触点电连接，相应的所述动触点和的静触点之间同步接触或分离，从 而实现第一静簧脚和第二静簧脚之间的导通或断开。The temperature sensing switch according to claim 1, wherein the bridge body is an insulator, and the bridge movable contact device further comprises a third movable contact and a fourth movable contact, the static contact device The third static contact and the fourth static contact are connected to each other, and the third static contact and the fourth static contact are electrically connected by a U-shaped contact piece, and the contact connecting piece is located at the In the base, the third stationary contact and the fourth stationary contact respectively correspond to the third movable contact and the fourth movable contact, and the third movable contact is electrically connected to the first movable contact The fourth movable contact is electrically connected to the second movable contact, and the corresponding movable contact and the stationary contact are synchronously contacted or separated from The conduction or disconnection between the first stationary spring foot and the second static spring foot is achieved.
- 根据权利要求5所述的感温开关，其特征在于，所述动触点位于所述桥体的孔中并且带有蝶形弹簧片。A temperature sensitive switch according to claim 5, wherein said movable contact is located in the bore of said bridge body and has a butterfly spring piece.
- 根据权利要求1所述的感温开关，其特征在于，所述底座上的所述孔为阶梯孔，使得所述静触点缩进所述底座中。A temperature sensitive switch according to claim 1 wherein said aperture in said base is a stepped aperture such that said stationary contact is retracted into said base.
- 根据权利要求1所述的感温开关，其特征在于，所述触点为多组并联触点。A temperature sensitive switch according to claim 1 wherein said contacts are a plurality of sets of parallel contacts.
- 根据权利要求1所述的感温开关，其特征在于，所述腔体内具有容纳感温体的感温腔，所述感温腔的两侧设有熔化槽，所述感温腔与所述熔化槽之间具有贯通槽。 The temperature sensing switch according to claim 1, wherein the cavity has a temperature sensing cavity for accommodating a temperature sensing body, and both sides of the temperature sensing cavity are provided with a melting groove, and the temperature sensing cavity is There are through grooves between the melting grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610422273.4 | 2016-06-15 | ||
| CN201610422273.4A CN105869952A (en) | 2016-06-15 | 2016-06-15 | Bridge type contact structure temperature sensing switch |
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| WO2017215620A1 true WO2017215620A1 (en) | 2017-12-21 |
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| PCT/CN2017/088372 WO2017215620A1 (en) | 2016-06-15 | 2017-06-15 | Temperature-sensing switch in bridge-type contact structure |
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| WO (1) | WO2017215620A1 (en) |
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| CN108666179A (en) * | 2018-03-22 | 2018-10-16 | 上海得慨电气有限公司 | Bridging structure built in a kind of disconnect switch contact circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869952A (en) * | 2016-06-15 | 2016-08-17 | 厦门赛尔特电子有限公司 | Bridge type contact structure temperature sensing switch |
| CN107633984B (en) * | 2017-10-27 | 2019-12-13 | 泉州台商投资区镕逸科技有限公司 | Temperature fuse structure |
| CN113192806B (en) * | 2021-03-26 | 2024-06-18 | 厦门赛尔特电子股份有限公司 | Multi-channel synchronous control temperature fuse |
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