CN201667296U

CN201667296U - Microswitch

Info

Publication number: CN201667296U
Application number: CN2010201455035U
Authority: CN
Inventors: 陆英武
Original assignee: Dongguan Bubugao Electrical Appliances Co Ltd
Current assignee: Zhejiang Taizhou Aishida Electrical Equipment Co Ltd
Priority date: 2010-03-26
Filing date: 2010-03-26
Publication date: 2010-12-08
Anticipated expiration: 2020-03-26

Abstract

A microswitch comprises a switch body which is arranged in a switch supporting frame and a switch trigger structure which is a T-shaped or eta shaped clip which is arranged at one side of a microswitch contact, the lower surface of a clip body is pressed on the contact and the clip body extends upwards out of the switch supporting frame slightly slantwise, a movement convex column is arranged at the end of the clip body, and the supporting end on the clip is movably connected with the switch body. The supporting end is in an inverse T shape and is arranged in a clamp groove which is arranged on the upper surface of the switch body, therefore, the deflecting movement is carried out with the inverse T shape at the end as a support by a supporting rod. The convex column is a metal or plastic convex column which is riveted or welded with the clip or a hollow convex column which is formed by directly stretching the clip. The clip is normally open contacted with the microswitch contact. Compared with the traditional clip, the linear dimension of the clip is small, the intensity is high, the response is sensitive, the movement is accurate, the precision is high, the structure is simple, the production is easy, the assembling section is reduced, the piece is saved and the usage is safe and reliable.

Description

A kind of sensitive switch

Technical field

The utility model relates to a kind of household electrical appliance sensitive switch, is meant a kind of family kitchen plays the power-off protection effect with soy bean milk making machine, rice paste machine, mixer, juice extractor etc. sensitive switch that is used for especially.

Background technology

At present, be to use more a kind of power-off protection apparatus, but sensitive switch triggering structure is the place's bottleneck in the sensitive switch application always such as sensitive switch in the home-use small household appliances such as soy bean milk making machine.Because do not trigger structure reliably, the sensitive switch failure phenomenon happens occasionally.The disclosed technical scheme of utility model patent " soy bean milk making machine power-off protection structure " that on September 30th, 2009 is open, notification number is CN201319503Y is that sensitive switch and lever are arranged in the switch bracket; lever one end is provided with projection; projection stretches in the head lower cover through hole; cup is provided with fore-set; fore-set stretches in the head lower cover through hole and contacts with projection, thereby reaches the purpose of utilizing sensitive switch control power on/off.The shortcoming of this scheme is the lever construction complexity, and assembling is difficult, and each size cooperates requirement high, especially to sensitive switch stroke tolerance height, easily causes head to separate the possibility that not outage appears in the back with cup, can not really realize safeguard protection.

The utility model content

At the problem that prior art exists, the utility model provide a kind of simple in structure, action consistency is high, assembling easily, domestic appliance, in particular is the kitchen appliance sensitive switch cheaply.

Designed a kind of sensitive switch according to the above-mentioned problem that needs to solve, comprise that sensitive switch body and sensitive switch trigger structure, the sensitive switch body is arranged in the switch bracket, described trigger mechanism is one to be arranged on the shell fragment of sensitive switch contact one side, the lower surface of this spring plate be pressed against on the contact of sensitive switch and the spring plate slight inclination extend upward outside the switch bracket, extended end tail place at shell fragment is installed with the action projection, described shell fragment execution mode 1 is, this shell fragment is the lever of nearly T shape or both wings expansion shape, extended end tail place outside switch bracket is installed with the action projection, shell fragment is a compressing tablet to the Switch main body elongated end, this compressing tablet is pressed against on the contact of sensitive switch, and support bar and Switch main body on the shell fragment are dynamically connected; Described shell fragment execution mode 2 is, this shell fragment is the lever that is Greek alphabet η shape, and the extended end tail place outside switch bracket is installed with the action projection, and the lower surface of shell fragment back bending is against on the contact of sensitive switch, and the end and the Switch main body of back bending are dynamically connected.

Wherein, the described end that is the shell fragment support bar of nearly T shape or both wings expansion shape is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, and making support bar serves as to support to carry out yaw motion with the inverted T-shaped of end; The described end that is the shell fragment of Greek alphabet η shape is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, and making support bar serves as to support to carry out yaw motion with the inverted T-shaped of end.In addition, described projection is the metal or the plastic cement material projection of riveting or welding with shell fragment, or directly passes through the hollow projection of shell fragment drawing and forming; Contact for often opening between described shell fragment and the sensitive switch contact, promptly switch contact is a normally opened contact.

Shell fragment in the utility model is compared with traditional shell fragment, and the shell fragment linear-scale is little, intensity is high, be quick on the draw, movement range is little and accurately put in place, the precision height, and simple in structure, produce easily, reduced the assembling link, saved part, safe and reliable.

Description of drawings

Accompanying drawing 1 is the partial cutaway schematic diagram after the utility model be applied to soy bean milk making machine time assembling; Accompanying drawing 2 is enlarged diagrams of accompanying drawing 1 broken section part; Accompanying drawing 3 is part parts decomposing schematic representations of the utility model embodiment 1; Accompanying drawing 4 is enlarged diagrams of part shell fragment in the accompanying drawing 3; Accompanying drawing 5 is part parts decomposing schematic representations of the utility model embodiment 2; Accompanying drawing 6 is enlarged diagrams of part shell fragment in the accompanying drawing 5.

Embodiment

Purport of the present utility model is further perfect frame design, reduces and the merging parts, improves reaction sensitivity and the precision of complete machine to action, so that reduce cost, improves the security reliability of complete machine.The utility model is applicable to that domestic appliance, in particular is the kitchen small household appliances.Be that the utility model is described in further detail in conjunction with the accompanying drawings for example below with the soy bean milk making machine.

Accompanying drawing 1,2 has provided existing commercially available common motor overhead soy bean milk making machine and has indicated that the utility model is arranged in the position of soy bean milk making machine---and the joint portion of head and cup is the cup upper edge, as seen the utility model is a power on/off control switch in using, and effect is also more or less the same when being used for other electrical equipment.

Accompanying drawing 3,4 is given and has been shown embodiment 1.Sensitive switch body 2 is fixedly installed in the switch bracket, and this switch bracket is fastened by involutory left socle 1.1 and right support 1.2 and forms.Upper surface at the sensitive switch body is provided with the sensitive switch trigger mechanism, and this trigger mechanism is one to be arranged on the shell fragment 3 of sensitive switch contact 2.1 1 sides.Described shell fragment is the lever that is nearly T shape or both wings expansion shape, extended end tail place outside switch bracket is installed with action projection 3.3, shell fragment is a compressing tablet 3.1 to the Switch main body elongated end, the lower surface of this compressing tablet is pressed against on the contact of sensitive switch, and the support bar 3.2 on the shell fragment is dynamically connected with Switch main body.Wherein, being end that nearly T shape or both wings launch the shell fragment support bar of shape still is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, making support bar serves as to support to carry out yaw motion with the inverted T-shaped of end, and promptly shell fragment can the support bar around shell fragment also be rotation or the front and back pitching action that certain angle is done in rotating shaft in the sensitive switch body.When being assemblied on the soy bean milk making machine, projection 3.3 passes the through hole 4 of soy bean milk making machine head lower cover edge and the upper edge fore-set 5 of soy bean milk making machine cup offsets, and controls the break-make of power supply thus.It is noted that the sensitive switch described in the utility model is a normally opened contact, thereby contact for often opening between the compressing tablet in the shell fragment and the sensitive switch contact.

Return accompanying drawing 1,2.The sensitive switch assembly is installed in the head of soy bean milk making machine, stretches into the head lower cover lid along in the last through hole near the sidewall of head lower cover and its action projection, and the upper edge fore-set 5 of alternating floor water-proof silica-gel pad and soy bean milk making machine cup offsets.The not operating state of this action projection 3.3 is that the projection end stretches into the head lower cover lid along in the last through hole 4.When the soy bean milk making machine head is fastened on the soy bean milk making machine cup, soy bean milk making machine cup upper edge fore-set will move projection jack-up, then the compressing tablet 3.1 on the shell fragment 3 with the contact 2.1 of sensitive switch to pressing down, force the sensitive switch closure and energized.After the program of finishing whole obtain soy milk, take off head from cup, the projection that then moves under the elastic force effect of sensitive switch contact, stretch into again head lower cover lid along on through hole in reset, cut off the power supply of head immediately, guaranteed that thus the user's is safe in utilization.

Accompanying drawing 5,6 is given and has been shown embodiment 2.The difference of present embodiment and embodiment is the shape of described shell fragment.This shell fragment is the lever that is Greek alphabet η shape, extended end tail place outside switch bracket is installed with action projection 3.3, the shell fragment back bending constitutes compressing tablet 3.1, the lower surface of compressing tablet is against on the contact 2.1 of sensitive switch, the end 3.2 of back bending is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, and making support bar serves as to support to carry out deflection or elevating movement with the inverted T-shaped of end.The applicating adn implementing example 1 of present embodiment on electrical equipment is identical, does not repeat them here.

Claims

1. sensitive switch, comprise that sensitive switch body (2) and sensitive switch trigger structure, the sensitive switch body is arranged in the switch bracket, described trigger mechanism is one to be arranged on the shell fragment (3) of sensitive switch contact one side, the contact (2.1) that the lower surface of this shell fragment is pressed against sensitive switch go up and the spring plate slight inclination extend upward outside the switch bracket, be installed with action projection (3.3) at the extended end tail place of shell fragment, it is characterized in that:

Described shell fragment is the lever that is nearly T shape or both wings expansion shape, extended end tail place outside switch bracket is installed with the action projection, shell fragment is compressing tablet (3.1) to the Switch main body elongated end, and this compressing tablet is pressed against on the contact of sensitive switch, and the support bar on the shell fragment (3.2) is dynamically connected with Switch main body; Perhaps,

Described shell fragment is the lever that is Greek alphabet η shape, and the extended end tail place outside switch bracket is installed with the action projection, and the lower surface of shell fragment back bending is against on the contact of sensitive switch, and the end and the Switch main body of back bending are dynamically connected.

2. sensitive switch according to claim 1, it is characterized in that: the described end that is the shell fragment support bar of nearly T shape or both wings expansion shape is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, and making support bar serves as to support to carry out yaw motion with the inverted T-shaped of end.

3. sensitive switch according to claim 1 is characterized in that: the described end that is the shell fragment of Greek alphabet η shape is inverted T-shaped and is installed in the draw-in groove that is provided with on the Switch main body upper surface, and making support bar serves as to support to carry out yaw motion with the inverted T-shaped of end.

4. according to claim 1 or 2 or 3 described soy bean milk making machine sensitive switch assemblies, it is characterized in that: described projection is the metal or the plastic cement material projection of riveting or welding with shell fragment, or directly passes through the hollow projection of shell fragment drawing and forming.

5. according to claim 1 or 2 or 3 described sensitive switches, it is characterized in that: contact for often opening between described shell fragment and the sensitive switch contact.