CN200953318Y

CN200953318Y - Time-delayed power-off resetting temperature protector

Info

Publication number: CN200953318Y
Application number: CN 200620126344
Authority: CN
Inventors: 苏伟锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-12
Filing date: 2006-10-12
Publication date: 2007-09-26
Anticipated expiration: 2016-10-12

Abstract

The utility model discloses a time-delay power-off resetting temperature protector, which comprises a heat conducting metal shell with an opening at one of its ends, a first contact strip with an insulating contact strip holder and one of its ends electrically connected with external leads, a second contact strip with one of its ends electrically connected with external leads and an electric switch assembly composed of a first spring leaf and a second spring leaf. Wherein, one end of the first spring leaf is provided with a bimetal sheet with a contact. The contact is connected with the first contact strip and is normal closed. In addition, the first contact strip and second contact strip are respectively fixed on the contact strip holder. The other end of the bimetal sheet is electrically connected with the other end of the second contact strip. The shell is positioned out of the electric switch assembly and provided with a PTC heating block and a clamping piece. Besides, the PTC heating block is hermetically fastened with the shell through the clamping piece and connected with the first contact strip through leads. The utility model is characterized in that the PTC heating block is connected with the lead through the clamping piece and has the advantages of rational and simple structure, high performance-price ratio, excellent operating effects, etc.

Description

Delay cut-off reset temperature protector

Technical field

The utility model relates to a kind of delay cut-off reset temperature protector, is specifically related to a kind ofly under the excess temperature condition, can prolong opening time, and the delay cut-off reset temperature protector of being convenient to fix a breakdown belongs to the electric switch technology.

Background technology

Existing be connected in the circuit can be to the temperature detect switch (TDS) of temperature sensitive response, when its working temperature surpasses the rated temperature that sets, even if disconnect stop to; And be reduced to its rated temperature when following when its working temperature, even if closed giving.Power consumption equipment with this temperature detect switch (TDS) tends under operating mode because the influence of ambient temperature or current strength produces the instantaneous out-of-work problem of instantaneous work repeatedly.City illumination electric light for example, bright scintillation when putting out when tending to thus electric light take place.Said problem will produce injury for power consumption equipment bulb for example, and also very uncomfortable to people's sensation.For this reason, providing a kind of can effectively prolong the power-off restoration time, and the delay cut-off reset temperature protector of being convenient to fix a breakdown just becomes the expectation of social user.Along with the appearance of PTC thermistor element, on existing bimetal release, load the PTC heater element, realize the temperature detect switch (TDS) that delay cut-off resets, though accidental have a report, its structure more complicated, preparation cost is higher.This extensively and cheaply promotes the use of for undoubtedly it, has caused obstacle.

Summary of the invention

It is a kind of simple and reasonable that the purpose of this utility model is to provide, and cost performance and result of use be delay cut-off reset temperature protector preferably, to satisfy the needs of social user.

The utility model realizes that the technical though of its purpose is, keep existing bimetal release structure, and on its circuit 1 in parallel post the PTC heater element that connects airtight with its shell, realize that it prolongs opening time, thereby avoid power consumption equipment to occur instantaneous generation of quitting work problem for the instantaneous dead electricity of electricity work repeatedly.

The utility model realizes that the technical scheme of its purpose is:

A kind of delay cut-off reset temperature protector, has the uncovered heat-conducting metal shell of an end, by insulation contact base, conduction first contact that an end can be electrically connected with external wire, conduction the second wafer that an end can be electrically connected with external wire, form and be provided with the electric switch assembly that the bimetal leaf of contact is formed at an end of first reed by first reed and second reed; The contact is docked normally closed with first contact, first contact and the second wafer are chimeric fixing with contact base respectively, the other end of bimetal leaf is electrically connected with the other end of the second wafer, and outer cover suit is in the outside of electric switch assembly, and its improvement is: also have PTC heating piece and holding firmware; PTC heating piece connects by holding firmware and linking closely of shell and engages and fix with shell and to connect airtight; PTC heating piece is connected by lead with first contact, and PTC generates heat piece and lead by the holding firmware engagement connection.

Can understand by above given technical scheme, the utility model only is on its shell, fix the PTC heating piece in parallel by holding firmware with circuit, and PTC heating piece is connected with lead, equally by the holding firmware engagement connection, thereby needn't adopt welding, thereby realized the purpose of this utility model.

The further improvement of the utility model point is:

Said holding firmware is metal card firmware or plastic insulation holding firmware; When holding firmware is a metal, then between the attaching faying face of metal card firmware and metal shell, be provided with insulating part.Exist the purpose of insulating part obviously to be to make between metal card firmware and the metal shell and insulate, thereby make PTC heating piece constitute current circuit.

The second wafer is provided with the projection that constitutes via bending, the bottom surface of a projection top bimetal leaf; The end face of first reed of bimetal leaf is provided with notch.Its purpose obviously is further to keep the good operation condition for the electric switch assembly.Promptly, can further effectively avoid the fatigue surrender of bimetal leaf, and influence the contact of bimetal leaf and the disconnection campaign of first contact because the projection of the second wafer exists; And, can further help the contact of bimetal leaf and the closing motion of first contact because the notch of bimetal leaf exists.

After technique scheme was implemented, characteristics such as what the utlity model has is simple and reasonable, and cost performance and result of use are better were conspicuous.

Description of drawings

Fig. 1 is the front view of a kind of embodiment of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 links closely by holding firmware 10 with PTC heating piece 9 as shell 1 of the present utility model shown in Figure 2 to connect the B-B profile that engages; There is shown lead 11 and pass through the version of holding firmware 10 engagement connections and the shape of a saddle structure of holding firmware 10 with PTC heating piece 9;

Fig. 4 is as the vertical view of the utility model shown in Figure 1 after removing holding firmware 10, PTC heating piece 9 and shell 1.

Embodiment

Below contrast accompanying drawing, by the description of embodiment, the utility model is described in further detail.

One of embodiment is shown in accompanying

drawing

1,2,3,4.

A kind of delay cut-off reset temperature protector, have the uncovered heat-conducting metal stainless steel casing 1 of an end, conduction first contact 7 that can be electrically connected with external wire 3 by ambroin contact base 2, an end, the conduction the second wafer 5 that an end can be electrically connected with external wire 4, form and be provided with the electric switch assembly 8 that the bimetal leaf 6 of contact 6-1 is formed at the end of the first reed 6-2 by the first reed 6-2 and the second reed 6-3; Contact 6-1 docks normally closed with first contact 7, first contact 7 and the second wafer 5 are chimeric fixing with contact base 2 respectively, the other end of bimetal leaf 6 is electrically connected with the other end of the second wafer 5, shell 1 is sleeved on the outside of electric switch assembly 8 and disconnects with bimetal leaf 6, also has PTC heating piece 9 and shape of a saddle phosphor-copper holding firmware 10; PTC heating piece 9 connects by holding firmware 10 and linking closely of shell 1 and engages and fix with shell 1 and to connect airtight; Between the attaching faying face of metal card firmware 10 and metal shell 1, be provided with plastic tube insulating part 12; PTC heating piece 9 is connected by lead 11 with first contact 7, and PTC heating piece 9 and lead 11 pass through holding firmware 10 engagement connections, also can weld engagement connection more earlier.The second wafer 5 is provided with the protruding 5-1 that constitutes via bending.The bottom surface that projection 5-1 props up top bimetal leaf 6; The end face of the first reed 6-2 of bimetal leaf 6 is provided with notch 6-2-1.If suit plastic insulation sleeve pipe is that the utility model just becomes integral insulation spare again on the surface of holding firmware 10.By the described the utility model of this embodiment, but direct-furnish user use, and its every serviceability is best.

Two of embodiment.Shown in accompanying

drawing

1,3,4, and please join and read accompanying drawing 2.

A kind of delay cut-off reset temperature protector, have the uncovered heat-conducting metal stainless steel casing 1 of an end, conduction first contact 7 that can be electrically connected with external wire 3 by ambroin contact base 2, an end, the conduction the second wafer 5 that an end can be electrically connected with external wire 4, form and be provided with the electric switch assembly 8 that the bimetal leaf 6 of contact 6-1 is formed at the end of the first reed 6-2 by the first reed 6-2 and the second reed 6-3; Contact 6-1 docks normally closed with first contact 7, first contact 7 and the second wafer 5 are chimeric fixing with contact base 2 respectively, the other end of bimetal leaf 6 is electrically connected with the other end of the second wafer 5, shell 1 is sleeved on the outside of electric switch assembly 8 and disconnects with bimetal leaf 6, also has PTC heating piece 9 and shape of a saddle ambroin holding firmware 10; PTC heating piece 9 connects by holding firmware 10 and linking closely of shell 1 and engages and fix with shell 1 and to connect airtight; PTC heating piece 9 is connected by lead 11 with first contact 7, and PTC heating piece 9 passes through holding firmware 10 engagement connections with lead 11.By the described the utility model of this embodiment owing to do not have protruding 5-1 and notch 6-2-1, thereby its serviceability, slightly more a little bit poorer than the described the utility model of one of embodiment.

Three of embodiment as shown in Figure 4, and please be joined and read accompanying

drawing

1,2,3.

A kind of delay cut-off reset temperature protector, have the uncovered heat-conducting metal stainless steel casing 1 of an end, conduction first contact 7 that can be electrically connected with external wire 3 by ambroin contact base 2, an end, the conduction the second wafer 5 that an end can be electrically connected with external wire 4, form and be provided with the electric switch assembly 8 that the bimetal leaf 6 of contact 6-1 is formed at the end of the first reed 6-2 by the first reed 6-2 and the second reed 6-3; Contact 6-1 docks normally closed with first contact 7, first contact 7 and the second wafer 5 are chimeric fixing with contact base 2 respectively, the other end of bimetal leaf 6 is electrically connected with the other end of the second wafer 5, shell 1 is sleeved on the outside of electric switch assembly 8 and disconnects with bimetal leaf 6, also has PTC heating piece 9 and shape of a saddle stainless steel holding firmware 10; PTC heating piece 9 connects by holding firmware 10 and linking closely of shell 1 and engages and fix with shell 1 and to connect airtight; PTC heating piece 9 is connected by lead 11 with first contact 7, and PTC heating piece 9 passes through holding firmware 10 engagement connections with lead 11.Between the attaching faying face of metal card firmware 10 and metal shell 1, establish plastic insulation spare 12.The second wafer 5 is provided with the protruding 5-1 that constitutes via bending.The bottom surface that projection 5-1 props up top bimetal leaf 6; The end face of the first reed 6-2 of bimetal leaf 6 is provided with notch 6-2-1.By the described the utility model of this embodiment, only be to change phosphor-copper holding firmware 10 into the stainless steel holding firmware, other is identical with one of embodiment.

The concise and to the point description of the utility model working condition is, the utility model is connected on power consumption equipment for example on the circuit of city street lamp, because the utility model is normally closed, under the normal working temperature condition, power consumption equipment gets electric work, when working temperature surpassed the temperature that sets, bimetal leaf 6 promptly disconnected with first contact 7 automatically, and the power consumption equipment dead electricity quits work.Because PTC heating piece 9 is in parallel with electric switch assembly 8 of the present utility model, thereby the 9 instant work heatings of PTC heating piece, make electric switch the assembly 8 not reduction of response temperature at once and turning circuit, having realized the open circuit purpose of reset and protection of time-delay.Certainly, the heating temp of said PTC heating piece must be complementary with control temperature of the present utility model.

The restriction that the scope of application of the present utility model is not described by this specification.

Claims

1, a kind of delay cut-off reset temperature protector, has the uncovered heat-conducting metal shell (1) of an end, by insulation contact base (2), conduction first contact (7) that an end can be electrically connected with external wire (3), conduction the second wafer (5) that an end can be electrically connected with external wire (4), form and be provided with the electric switch assembly (8) that the bimetal leaf (6) of contact (6-1) is formed at an end of first reed (6-2) by first reed (6-2) and second reed (6-3); Contact (6-1) is docked normally closed with first contact (7), first contact (7) and the second wafer (5) are chimeric fixing with contact base (2) respectively, the other end of bimetal leaf (6) is electrically connected with the other end of the second wafer (5), shell (1) is sleeved on the outside of electric switch assembly (8), it is characterized in that: also have PTC heating piece (9) and holding firmware (10); PTC heating piece (9) connects by holding firmware (10) and linking closely of shell (1) and engages and fix with shell (1) and to connect airtight; PTC heating piece (9) is connected by lead (11) with first contact (7), and PTC generates heat piece (9) and lead (11) by holding firmware (10) engagement connection.

2, delay cut-off reset temperature protector according to claim 1 is characterized in that: said holding firmware (10) is metal card firmware or plastic insulation holding firmware; When holding firmware (10) is a metal, then between the attaching faying face of metal card firmware (10) and metal shell (1), be provided with insulating part (12).

3, delay cut-off reset temperature protector according to claim 1 is characterized in that: the second wafer (5) is provided with the projection (5-1) that constitutes via bending, the bottom surface of projection (5-1) top bimetal leaf (6); The end face of first reed (6-2) of bimetal leaf (6) is provided with notch (6-2-1).