CN201774339U - Motor protector and motor using same - Google Patents
Motor protector and motor using same Download PDFInfo
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- CN201774339U CN201774339U CN2009202932058U CN200920293205U CN201774339U CN 201774339 U CN201774339 U CN 201774339U CN 2009202932058 U CN2009202932058 U CN 2009202932058U CN 200920293205 U CN200920293205 U CN 200920293205U CN 201774339 U CN201774339 U CN 201774339U
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Abstract
Currently, a motor protector with reduced cost is needed, and the motor protector still has wider application range. Further, the motor protector is hoped to be capable of effectively preventing a failure closing mode. Furthermore, the motor protector is easy in automated assembly. The utility model relates to a motor protector and a motor using the same. The motor protector comprises a casing with an opening and a motor protector component, wherein the motor protector component is disposed inside the casing, and terminals of the motor protector component are electrically connected to outside of the casing. The motor protector can adopt production line for assembly in industrial fabrication process, and greatly increases fabrication efficiency and yield.
Description
Technical field
The utility model relates to motor protecter, more specifically, relates to and a kind ofly places housing to satisfy the motor protecter of higher design requirement the motor protecter parts.
Background technology
At present, there is multiple motor protecter on the market.A kind of motor protecter commonly used comprises housing, bimetal leaf, moving contact, fixed contact and lead-in wire.An example of motor protecter commonly used is for example can be from the commercial 3MP serial motors protector that obtains of Sensata Technologies Massachusetts company, and its schematic structure is shown in accompanying drawing 1A.This 3MP motor protecter comprises housing 1, bimetal leaf 2, moving contact 3, insert 4, packing ring 5, heater 6, fixed contact 7 and conductive soleplate 8.Profile after its assembling is finished is shown in Figure 1B.China granted patent ZL.200720125503.7 has put down in writing the details of this 3MP motor protecter, by reference it is incorporated herein herein.In addition, the another one example of Chang Yong motor protecter is for example can be from the commercial 4MP motor protecter that obtains of Sensata Technologies Massachusetts company.These motor protecters mainly are used in the industrial environment.Specifically, in industrial environment, the operating voltage of motor is comparatively stable usually, and motor mainly is installed in factory building or indoor.At this moment, indoor variations in temperature is little.Therefore, external environment changes less to the influence of this motor protecter.Can be in advance the motor protecter of 3MP and 4MP series be carried out temperature correction to adapt to applied operational environment, this calibration operation can carry out to automation in process of production.Thus, 3MP and 4MP motor protecter structure are comparatively simple.In industry was made, each parts of this motor protecter can be produced in enormous quantities and can automation assemble, and therefore have lower manufacturing cost.
On the other hand, the motor protecter that also exists some must adapt to more complicated applied environment for example is used for day and night temperature protector very big, that be positioned at outdoor compressor of air conditioner.In addition, for various household electrical appliance, its operating voltage is usually unstable, may be because a variety of causes can produce fluctuation.Under this operating voltage and under the interference in ambient temperature, tend to cause motor protecter execute protection function (open circuit or recover closed prematurely) mistakenly mistakenly when unnecessary.Therefore, the marked change of external environment is had higher requirement to the protective value of motor protecter.Accompanying drawing 2 shows another serial motor protecter, its for example be can from Sensata Technologies Massachusetts company commercial obtain 3/4 " the serial motors protector.This motor protecter can be used to protect and be positioned at outdoor motor (for example, compressor of air conditioner).As shown in the figure, this motor protecter is designed to have a plurality of parts, for example comprises: housing, pair of terminal, pair of contact, adjustment screw, bimetal disk, support, nut or the like.Practice shows that this motor protecter can adapt to the extraneous comparatively influence of rugged environment.For example, when having determined object of protection and operational environment, described adjustment screw can be used for suitably regulating two pressure between the contact, and the work that plays calibration temperature thus is in order to adapt to external environment limitedly.Yet,, especially need artificial assembling and debugging (for example the adjustment screw needs are manually fixed, regulated) because it has the comparatively structure of complexity.Therefore, although this motor protecter can adapt to various environment to a certain extent, its complex structure is unsuitable for the automation assembling, therefore has higher cost.
As mentioned above, for specific application (motor that for example has specific rated current, working temperature requirement), be that particular motor is selected suitable protector usually in a series of protectors.For example, consider factors such as temperature, electric current, installing space, from can precalibrated 3MP series or from need manual calibration 3/4 " select suitable protector the series.Specifically; for example (for example can adapt to all-environment motor for being used for outdoor hope; compressor of air conditioner); because working temperature is undesirable, be difficult to be installed to compressor reasons such as (profile of the 3MP shown in Figure 1B are difficult to be fixed on the shell of compressor); often can't from tens thousand of kinds of products the 3MP series protector, select suitable protector, this means to be difficult to 3MP series protector is applied to this application.On the other hand, can be from 3/4 " select suitable protector for compressor of air conditioner the series of products, however this series protector structure complexity is unsuitable for the automation assembling and adjusts, and therefore has higher cost.
In addition, in the latter stage in useful life of motor protecter, the phenomenon that its bimetal leaf or bimetal disk can't regular events appears possibly.Also promptly, motor protecter can't normally play the effect of protection motor.This phenomenon is called as " inefficacy closed mode ".
The utility model content
Therefore, consider the above-mentioned problems in the prior art, need a kind of motor protecter that reduces cost, this protector still has range of application comparatively widely.Further, hope can prevent the closed mode that lost efficacy effectively.Further, this motor protecter is easy to the automation assembling.
According to one side of the present utility model, a kind of motor protecter is provided, it comprises: the housing with opening; The motor protecter parts, described motor protecter parts are placed in the described housing, and the terminal of described motor protecter parts is electrically connected to outside the described housing.
According on the other hand of the present utility model, a kind of motor is provided, it is characterized in that having used according to above-mentioned motor protecter.
As mentioned above, inventor of the present utility model has creatively proposed a kind of improved motor protecter, and this motor protecter is just done simple improvement to motor protecter commonly used makes conventional motor protecter can adapt to complex operating environment more.Further, this motor protecter can adopt the streamline assembling in industrial manufacture process, improved manufacturing efficient and output greatly.
Description of drawings
Figure 1A and 1B schematically show a kind of motor protecter according to prior art;
Fig. 2 schematically shows the motor protecter according to the operational environment that can adapt to relative complex of prior art;
Fig. 3 schematically shows the exploded view according to the motor protecter of an embodiment of the present utility model;
Fig. 4 schematically shows the motor protecter according to an embodiment of the present utility model, wherein Reference numeral 35 expression cavitys;
Fig. 5 A schematically shows the motor protecter according to an embodiment of the present utility model, and wherein Reference numeral 51 is represented main cavities, Reference numeral 52 vice cavitys; Fig. 5 B schematically shows the schematic diagram according to the shell structure of an embodiment of the present utility model;
Fig. 6 schematically shows the motor protecter according to an embodiment of the present utility model;
Fig. 7 schematically shows the cutaway view according to the motor protecter of an embodiment of the present utility model
Fig. 8 A and 8B schematically show the method for a kind of manufacturing according to motor protecter of the present utility model, and wherein Fig. 8 A shows the preceding motor protecter of crimping, and Fig. 8 B shows the motor protecter after the crimping; And
Fig. 9 A-9C and 9D (a) and 9D (b) illustrate the view according to the terminal of motor protecter parts of the present utility model, wherein Reference numeral 901 is represented the part of attenuates, Reference numeral 902 expressions are from the hollow arrow direction, and Reference numeral 903 is represented the thickness of attenuates;
Fig. 9 E illustrates the assembling schematic diagram according to the terminal of motor protecter parts of the present utility model and independent leading-out terminal.
Embodiment
To describe preferred embodiment of the present utility model at this, please refer to the diagram of enclosing.In the appended diagram of the utility model, identical reference number is promptly represented identical structural element.
Fig. 3 shows the schematic diagram according to the motor protecter of the application's embodiment.As shown in the figure, motor protecter 3 comprises motor protecter parts 31, leading-out terminal 32 and the housing 33 with opening.Motor protecter parts 31 are placed among the housing 33, and two leading-out terminals 32 are connected with the terminal of motor protecter parts 31 and are electrically connected to outside the housing 33.Outward appearance after its assembling can be referring to accompanying drawing 8B.
Leading-out terminal 32 is the pair of metal sheets that are used in combination with motor protecter parts 31, housing 33, and it is connected to two terminals of motor protecter parts 31 and extends outside the housing 33.Here can use various suitable methods of attachment that leading-out terminal 32 is connected with motor protecter parts 31, and can realize the function that open circuit is connected with restore circuit.For example, can adopt on two terminals of motor protecter parts 31 self and weld a leading-out terminal 32 respectively.Yet the utility model is not limited only to this, but can comprise any suitable connected mode, for example: peg graft riveted joint, soldering etc.Shown in Fig. 3 and 8B, leading-out terminal 32 will extend to from the housing bottom relative with shell nozzle outside the housing, yet, in the prior art, can change the position of leading-out terminal 32 according to specific design from housing 33 extensions, for example, also can consider to extend to outside the housing from the sidewall of housing 33.The relative position of leading-out terminal and housing and set-up mode are technique known in the art.Leading-out terminal is made by the conductivity good metal usually, for example copper.Yet, also can consider to use other suitable electric conducting materials.Use the independently example of leading-out terminal although provided as shown in Figure 3, yet, also can omit this leading-out terminal, the terminal (shown in Figure 1B) that directly uses motor protecter parts 31 itself is as leading-out terminal 32.For example, it may occur to persons skilled in the art that the terminal with motor protecter parts 31 self forms suitable shape, make it be suitable for being electrically connected to outside the housing thus.
Below will introduce the structure of motor protecter 3 of the present utility model in detail.
Fig. 4 further shows the structure of motor protecter 3.As shown in the figure, motor protecter parts 31 are set among the housing 33, and housing 33 can closely surround motor protecter parts 31 to isolate external environment.In one embodiment, can between the wall of motor protecter parts 31 and housing 33, form space (cavity).Motor protecter parts 31 extend outside the housing 33 by leading-out terminal 32 (not shown among Fig. 4), thereby are electrically connected with external circuit.When practical application, these cavitys and housing will play the effect of isolating external environment jointly, make motor protecter of the present utility model can adapt to the operational environment of relative complex.Can adopt variety of way that motor protecter parts 31 are fixed among the housing 33.For example, can the leading-out terminal that be fixed to motor protecter parts 31 be bonded in this hole, thus fixed electrical machinery protector parts in the housing bottom perforate.In addition, known to those skilled in the art, can fix motor protecter parts 31, and can adopt automation to assemble to finish the fixing of motor protecter parts 31 and housing 33 by crimping, welding, bonding or the like technology.
Accompanying drawing 5A shows another embodiment of the present utility model.In this embodiment, for example, when housing adopts 3/4 " during the overall dimension of serial motors protector; in housing, formed the inwall 53 that is used for fixing motor protecter parts 32; in housing, formed three cavitys by this inwall, that is, and a main cavity 51 and two secondary cavitys 52.Motor protecter parts 31 are arranged in the main cavity 51.As shown in the figure, main cavity 51 is between two secondary cavitys 52, and secondary cavity 52 is adjacent to the wall of housing.Accompanying drawing 5B shows the example of the circular secondary cavity that forms a plurality of different sizes.Those of ordinary skill in the art will be appreciated that, can form one or more secondary cavitys according to specific application, and the size of each secondary cavity can differ from one another, and relative position also can be asymmetric mutually, in addition, can form the secondary cavity of other shapes.Can obtain to have the housing 33 of respective shapes by methods such as molding or mold pressings.Adopt aforesaid way can easily realize industrialized mass and automation assembling.
On the other hand; accompanying drawing 6 shows another embodiment of the present utility model; wherein utilize openend (because the mounted on surface that the motor protecter product is often pasting motor of end cap 61 closure casings; its openend in use can natural enclosing; therefore, in some other execution mode of the present utility model, this openend seals without end cap; can reduce cost like this), motor protecter parts 31 are sealed in the housing.The material of end cap 61 is insulating heat insulating materials, and it can be the above-mentioned disclosed material that is used for housing 33.The existence of end cap 61 can further promote the effect that motor protecter parts 31 are isolated from the outside.
In addition, accompanying drawing 7 shows another embodiment of the present utility model.In this embodiment, adopted a pair of support section 71 and 72, be used for supporting and positioning motor protector parts 31, and can the clamping leading-out terminal.In this embodiment, between the bottom of motor protecter parts 31 and housing, formed additional space 70.This space also can be used to be incubated and isolated external environment or be used to satisfies the space requirement of the motor protecter parts of other types.In addition, as shown in Figure 7, can change the distance of motor protecter parts 31 according to application-specific apart from shell nozzle.For example, when operating ambient temperature is higher, can suitably make the motor protecter parts away from shell nozzle according to concrete application.Like this, even under the motor temperature condition with higher, also can not disconnect protector prematurely, but allow motor to work on a period of time (needing such operation in some applications).On the other hand, can be suitably near shell nozzle, thus improve sensitivity and accuracy to the machine operation temperature sense, disconnect protector as far as possible rapidly and accurately, thus the protection motor.Herein; although also considered other distance ranges clearly; yet the inventor finds; when housing adopts 3/4 " during the overall dimension of serial motors protector; when motor protecter parts 31 when the distance of shell nozzle is 0-20mm; motor protecter 3 of the present utility model has better protection effect, although clearly do not list, yet each point in above-mentioned scope all should be regarded as disclosed by the utility model.
In the described embodiment of 4-7 with reference to the accompanying drawings; use air as insulating material and play heat insulation effect in the cavity that between motor protecter parts 31 and housing 33, forms; yet in a kind of preferred mode; can in above-mentioned each cavity, fill other insulating material, realize further isolating the effect of external environment.Described insulation and thermal insulation material for example can be plastics (for example phenolic plastics, PPSU (PPS), polyether sulfone (PES) etc.) and other material (for example pottery etc.).Yet, it should be appreciated by those skilled in the art that and also can use other any appropriate insulation materials herein.
According to the utility model,, in cavity, fill the insulation and thermal insulation material only to current protector; And for temperature protector, filling heat insulator in cavity not then.
In the application of compressor of air conditioner; the end face of housing 33 or the surface area of bottom surface can be with existing 3/4 " the serial motors protector is identical; or adopt other diameter ranges (for example; its diameter is 16mm-32mm) according to using; and highly can be with 3/4 " the serial motors protector is identical or adopt other height according to using; for example, the altitude range that can adopt is 4-30mm.Adopt and existing 3/4 " advantage of the external dimensions that the serial motors protector is identical is directly to use motor protecter of the present utility model under the situation of any parts that do not change compressor of air conditioner.Further; when 31 employings of motor protecter parts comprise this class formation of housing, bimetal leaf, moving contact, fixed contact and leading-out terminal; because it can be made with higher automation or streamline degree; so cost is relatively low, so also just can reduce the cost of motor protecter of the present utility model.
Below, will method and other embodiment of the motor protecter 3 of making the application be described.
At first, provide housing 33.As mentioned above, for example, the material of housing 33 can be the insulation material of insulation and thermal insulation.Yet those skilled in the art also can use any suitable other materials.Obtain housing 33 by methods such as molding or mold pressings.Described housing is manufactured to and motor protecter parts 31 are placed in one and allow leading-out terminal 32 to extend to outside from housing 33.After this, the motor protecter parts 31 that can adopt any means will have leading-out terminal are fixed among the housing 33, and make leading-out terminal extend to outside from housing.Leading-out terminal can be selected according to application-specific from the position that housing extends, and for example, can extend from the bottom of housing or extends to outside the housing from the sidewall of housing.For example, in one embodiment, in housing 33, utilize adhesive motor protecter parts 31.In another embodiment, as shown in Figure 7, can adopt a pair of support component 71,72 to support and fixed electrical machinery protector parts 31, and between motor protecter parts 31 and housing bottom, form additional space 70.Those skilled in the art can adopt any suitable method fixed electrical machinery protector parts 31, such as but not limited to welding, crimping, engagement or the like.
Fig. 8 A and 8B show the motor protecter that passes through the crimping assembling according to an embodiment of the utility model.Shown in Fig. 8 A, leading-out terminal has end of engagement 81, and this end of engagement had hangnail end 82 and laterally projecting 83 before crimping.When the opening from housing placed housing with leading-out terminal, laterally projecting 83 was forced into the flange 84 that forms in the housing.After this, by crimping curved barb end 82, this crooked hangnail end forms claw with laterally projecting 83, the link closely flange 84 of housing of this claw.When motor protecter parts and leading-out terminal are fixed together, the motor protecter parts can be fixed to housing by this crimping step.Preferably, can be in advance the terminal of leading-out terminal and motor protecter parts self be linked together, can integrally fix formed assembly thus.After carrying out crimping, the crimp type terminal of motor protecter can be fixed on the housing.
In addition, inventor of the present utility model has imagined a kind of new terminal structure, makes terminal both can be used as the terminal on the ordinary meaning, but also can be used as fuse.Specifically, in common application, the external terminal of motor protecter and fuse are two independently parts.Shown in Figure 1B, the external terminal of motor protecter parts is the part of motor protecter normally, is mainly used in external electrical connection, can play support, effect such as fixing in addition.And fuse independent parts normally are used to provide defencive function.If can design a kind of new parts the function of terminal and fuse is integrated, then can save cost greatly, further, can simplify assembly technology.
As known to those skilled in the art, parameters such as the fusing time of fuse, fusing-off temperature are relevant with the resistance value of fuse.Can come calculated resistance according to following formula simplifiedly:
R＝ρL/S (1)
Wherein, R is a resistance value;
ρ is the resistivity of material;
L is the length of resistance;
S is the cross-sectional area of resistance.
The material of the external terminal of motor protecter is generally iron and steel, and its fusing point is usually above fuse.Therefore, can shorten its fusing time by improving a part of resistance of terminal.
As above-mentioned formula as can be known, can adopt various structures to realize that the cross-sectional area of the terminal (the especially exposed parts of terminal) that reduces improves the resistance of terminal.For example, Fig. 9 A shows at the same position place, both sides of the part of the exposed parts of terminal (only showing one of them) and forms the fusing-off temperature that rectangular recess changes this part.Can be by excising a part of terminal or the mould by reservation shape forms this recess.Select the size of rectangular recess according to fuse parameters needed scope, in other words, rectangular recess has determined the length and the cross-sectional area of this part terminal, and then has changed the resistance of this part terminal.Increased resistance will cause this part terminal to fuse under predetermined temperature, thereby play the electric motor protecting effect.Yet, also can adopt the recess of other shapes, for example circular arc, triangle etc.The mid portion that Fig. 9 B shows at the terminal exposed parts has formed oval-shaped hole (also can be other shapes, for example circular), has reduced the cross-sectional area of terminal thus.Fig. 9 C shows the embodiment that forms rectangular recess in a side of terminal exposed parts, also can form the recess of other shapes, for example circular arc or triangle.Fig. 9 D (b) shows the view when the direction shown in the hollow arrow is watched the side of terminal shown in Fig. 9 D (a).Can attenuate the thickness of part terminal, make this part terminal have the cross-sectional area littler thus than other part terminals.
Fig. 9 E shows and will have the terminal of cross-sectional area of change and the view after the leading-out terminal assembling.As mentioned above; terminal part and motor protecter body with cross-sectional area of change are connected in series; also be; be connected in series in the circuit; be connected with leading-out terminal and compare away from the part motor protecter body, that have original cross-sectional area, can guarantee to have high bonding strength thus with this part.Can adopt various connected modes, such as but not limited to, welding, riveted joint, grafting etc.More than show various exemplary structures, yet, it will be appreciated by those skilled in the art that and can utilize the cross-sectional area of the whole bag of tricks change terminal to realize the technical solution of the utility model.In addition, can be used in combination above-mentioned execution mode.For example, can form the thickness that recess also reduces this part simultaneously in the both sides of terminal exposed parts; Can form difform recess respectively in the terminal both sides.
It will be appreciated by those skilled in the art that the terminal part with the cross-sectional area that reduces can select according to being used for, yet, should guarantee that the electric current that flows through motor all flows through this part basically.At this moment, even motor protecter loses protective effect, this part can fuse (, as fuse) when electric current is too high, still can provide protection to motor thus.
In addition; although disclosed herein is the motor protecter terminal that to realize the fuse function; yet those skilled in the art can expect, the terminal that can keep motor protecter is constant and the fuse function is integrated on the external independent leading-out terminal (for example independent leading-out terminal 32 in the accompanying drawing 3).
On the other hand; although the terminal with reference to motor protecter has been described specific embodiment; yet it will be appreciated by those skilled in the art that thereby the cross-sectional area integrated terminal of a part of passing through the change terminal disclosed herein and the technical scheme of fuse function can be used for the occasion that other need terminal and fuse.
In the prior art, need order fuse component separately from manufacturer usually.Yet,, can utilize the terminal that can replace motor protecter parts self simultaneously as the terminal of fuse according to motor protecter of the present utility model.This can be integrated in fuse component in the motor protecter parts, can provide protection and while for the inefficacy closed mode to reduce cost greatly thus.
In one embodiment, can be set to the distance predetermined apart by the motor protecter parts with the opening part of housing.Those skilled in the art can set in advance this distance according to the external environment that protector will be faced.For example, when housing adopts 3/4 " during the overall dimension of serial motors protector, this distance can be 0-20mm.
In another embodiment, for current protector, can fill the insulation and thermal insulation material in formed cavity, this can further make the motor protecter parts be avoided the influence of ambient temperature.In another embodiment, form enclosure space, make the motor protecter parts that are placed in one be isolated from the outside by end cap and housing.As mentioned above, the material of end cap can be selected the insulation and thermal insulation material.
Various embodiment of the present utility model has more than been described.Obviously, various embodiment of the present utility model can make up mutually.For example, can when being provided, end cap in cavity, fill various insulation and thermal insulation materials.In addition, depend on specific application, can form the cavity of different shape, number and size in housing, end cap and housing can adopt identical materials, also can use different materials respectively, and can use various motor protecter parts.
Below will introduce the technique effect that the utility model is realized.In the utility model; material that can be by setting in advance housing, increase end cap and/or set in advance end cap material, set in advance motor protecter parts and shell nozzle distance, set in advance the position/quantity/size of formed cavity and the kind that sets in advance the insulation and thermal insulation material of being filled, come motor protecter is designed to adapt to different application.
Table 1 shows the performance comparison of the demonstration test of being carried out when selecting motor protecter for application-specific.As described in the application's background technology part, for motor protecter, the motor protecter that need have the particular characteristic parameter for various specific application choices.The contrast of the final jumping outage stream (UT) when table 1 shows a kind of specific 3MP motor protecter and identical 3MP motor protecter is applied to the utility model.It is 120 ℃ ± 5 ℃ that disconnected temperature is jumped in the design of above-mentioned specific 3MP motor protecter, and recovery temperature is 69 ℃ ± 9 ℃.As can be seen from Table 1; used after the utility model, compared with the 3MP motor protecter of this specific model, the average final outage stream of jumping of 5 sampled points has increased by 15%; reached 2.66 amperes, jumped disconnected temperature and recovery temperature simultaneously and still adhere to specification.The increase of above-mentioned final jumping outage stream is very favourable for many motor application.For example, many producers wish that motor still can operate as normal when the operating current overload to a certain degree (for example transships 20%).Used the final jumping outage stream that can increase the motor protecter of same model after the utility model, satisfying such requirement.In other words; used after the technical solution of the utility model; its range of application has obtained expansion for being applicable to motor protecter of the present utility model; for example; the parameter area of original certain motor protecter is not suitable for a certain application-specific; and used after the utility model, its parameter area has obtained expansion, might become to go for this kind application.Like this, might protector lower for various motor application alternative costs, that be fit to more.
Table 1
Opening time when table 2 shows under steady-working state 3MP motor protecter and the 3MP motor protecter is applied to the utility model and the comparison diagram of recovery time.As known to those skilled in the art, the useful life of motor protecter is relevant with the recovery time (jumping disconnected number of times) that jumping is had no progeny, and suitably prolongs to jump can prolong its useful life recovery time of having no progeny.For the motor protecter of 3MP series, there is short problem recovery time in it, and it is favourable therefore suitably prolonging its recovery time.As shown in table 2, after reaching steady-working state, under experimental condition, be 3.10 seconds the average opening time of 5 sampled points, and be 14.46 seconds recovery time.Yet, when using the technical scheme that the utility model proposed,, can suitably prolong recovery time because motor protecter parts and external environment are isolated.Corresponding, be 4.09 seconds the average opening time of 5 sampled points, and be 21.99 seconds recovery time, and it is about 50% that increasing degree has arrived, and still satisfies the designing requirement of 3MP motor protecter of the same type simultaneously.This shows, use the useful life that the utility model can prolong motor protecter greatly.
Table 2
As above as can be known, realized excellent technique effect according to motor protecter of the present utility model.
On the other hand, for example install, debug, in the transportation, use, the leading-out terminal of motor protecter may be subjected to the effect of external force and be out of shape, fracture etc.To this; 3/4 " terminal of serial motors protector the side force that can bear be approximately 3KG; and when having adopted a pair of support component fixed electrical machinery protector in the utility model; because the effect of support component; the side force greater than 5KG can be provided, this has improved the ability that motor protecter antagonism external environment changes greatly.At last; has identical size when housing being made with existing various motor protecter shells; can use motor protecter of the present utility model directly to replace various motor protecters expensive, complex process simply, and need not to change the inside or the external structure of motor.For example, when housing 33 being made with 3/4 " when the housing of serial motors protector has same size, can directly use motor protecter of the present utility model to replace 3/4 " the serial motors protector.Because 3/4 " the serial motors protector can not be realized automatic assembling, and therefore above-mentioned replacement will reduce the cost of motor protecter greatly.In addition, the housing according to motor protecter of the present utility model can be manufactured and be applicable to that (for example, compressor of air conditioner) size can be applied to direct convenience various application scenarios to various motors thus.
Can be described by interests and the advantage that the utility model provides about specific embodiment.These interests and advantage and may cause its generation or become more significant any parts or restriction can not be interpreted as feature key, needs or requisite of any or all claim.The term of Shi Yonging only is in order to describe specific embodiment herein, and is not intended to limit the disclosure.As using herein, unless context clearly explains in addition, otherwise singulative " ", " a kind of " and " described " are intended that and also comprise plural form.Will be further understood that, when using in this manual, term " comprises " and/or shows " comprising " existence of illustrated feature, integral body, step, operation, parts and/or assembly, but is not existence or the adding of getting rid of one or more other features, integral body, step, operation, parts, assembly and combination thereof.The equivalent intention that corresponding structure in following claims, material, action and all devices or step add functional elements comprises any structure, material or the action that is used to carry out as the function of specific requirement and element combinations other requirements.Therefore, comprise that device, method or other embodiment of a set of pieces not only is confined to these elements, can comprise other intrinsic elements of embodiment of not listing or being stated.Provided explanation of the present utility model with illustrative purposes presented for purpose of illustration, but it not exhaustive or is confined to the disclosure of disclosed form.Under the situation that does not deviate from protection range of the present utility model and spirit, those of ordinary skills will understand multiple remodeling and variation.
Although described the utility model, should be appreciated that embodiment is exemplary, and scope of the present utility model is not limited to these embodiment with reference to specific embodiment.To the multiple modification of the foregoing description, modification, additional and to improve all be possible.Should expect these modification, modification, additional and improve and drop on as in the specifically described scope of the present utility model of following claim.
Claims (14)
1. a motor protecter is characterized in that, comprising:
Housing with opening;
The motor protecter parts, described motor protecter parts are placed in the described housing, and the terminal of described motor protecter parts is electrically connected to outside the described housing.
2. motor protecter as claimed in claim 1 is characterized in that, described housing is cylindrical or part is cylindrical, and its diameter is 16-32mm.
3. motor protecter as claimed in claim 2 is characterized in that, the distance range at described motor protecter parts and shell nozzle place is 0-20mm.
4. motor protecter as claimed in claim 2 is characterized in that, forms main cavity between described housing and described motor protecter parts, and described motor protecter parts are set in the described main cavity.
5. motor protecter as claimed in claim 4 is characterized in that, also forms one or more secondary cavitys in described housing.
6. as any described motor protecter among the claim 1-5, it is characterized in that further comprise end cap, described end cap seals the opening of described housing.
7. motor protecter as claimed in claim 5 is characterized in that, fills the insulation and thermal insulation material in described main cavity and described secondary cavity.
8. as any described motor protecter among the claim 1-5, it is characterized in that described motor protecter parts comprise housing, bimetal leaf, fixed contact, moving contact and leading-out terminal at least.
9. motor protecter as claimed in claim 1 is characterized in that, described motor protecter parts are the motor protecters that can work alone.
10. as any described motor protecter among the claim 1-5, it is characterized in that having support section in described housing, described support section is used for described motor protecter parts are fixed on housing.
11. motor protecter as claimed in claim 1 is characterized in that, the terminal of described motor protecter parts is electrically connected to outside the described housing by leading-out terminal independently.
12. as any described motor protecter among the claim 1-5; it is characterized in that; the terminal of described motor protecter parts has the part that exposes; and the part of described exposed parts is compared with other parts of described exposed parts has the cross-sectional area that reduces, and described have the part that reduces cross-sectional area and be connected in series in the circuit.
13. motor protecter as claimed in claim 11; it is characterized in that; described independently leading-out terminal has end of engagement; this end of engagement comprises hangnail end and laterally projecting portion; thereby form claw by the crooked described hangnail end of crimping with described laterally projecting portion, the described claw flange in the described housing that links closely.
14. a motor is characterized in that having used as any described motor protecter among the claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202932058U CN201774339U (en) | 2009-12-11 | 2009-12-11 | Motor protector and motor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202932058U CN201774339U (en) | 2009-12-11 | 2009-12-11 | Motor protector and motor using same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200091799U Division CN202004572U (en) | 2009-12-11 | 2009-12-11 | Motor protector |
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| Publication Number | Publication Date |
|---|---|
| CN201774339U true CN201774339U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202932058U Expired - Lifetime CN201774339U (en) | 2009-12-11 | 2009-12-11 | Motor protector and motor using same |
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| Country | Link |
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| CN (1) | CN201774339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097786B (en) * | 2009-12-11 | 2016-01-27 | 森萨塔科技（常州）有限公司 | Motor protecter |
-
2009
- 2009-12-11 CN CN2009202932058U patent/CN201774339U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097786B (en) * | 2009-12-11 | 2016-01-27 | 森萨塔科技（常州）有限公司 | Motor protecter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SENSATA SCIENCE AND TECHNOLOGY (CHANGZHOU) CO., LT Free format text: FORMER OWNER: SENSATA TECHNOLOGIES, INC. Effective date: 20111024 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: 213000 CHANGZHOU, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20111024 Address after: 213000, 18 innovation Avenue, Xinbei District, Jiangsu, Changzhou Patentee after: Sensata Technologies Holland B. V. Address before: Massachusetts USA Patentee before: Sensata Technologies Massachusetts Inc. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
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| CX01 | Expiry of patent term |