KR20160005516A - Linear compressor and linear motor - Google Patents

Abstract

The present invention relates to a linear motor. A linear motor according to an aspect includes a bobbin having a combination unit, a coil which is wound around the bobbin and has an input terminal and an output terminal, stator cores which surround the bobbin, and a terminal unit which is combined with the combination unit and comprises an input terminal part connected to the input terminal and an output terminal part connected to the output terminal.

Description

[0001] Linear compressors and linear motors [0002]

The present specification relates to a linear compressor and a linear motor.

Generally, a compressor is a mechanical device that receives power from an electric motor such as an electric motor or a turbine and compresses air, refrigerant or various other operating gases to increase the pressure. The compressor is used for a household appliance such as a refrigerator and an air conditioner, It is widely used throughout.

Such a compressor is broadly classified into a reciprocating compressor that compresses the refrigerant while linearly reciprocating the piston inside the cylinder so as to form a compression space in which a working gas is sucked and discharged between the piston and the cylinder. A rotary compressor for compressing the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder and a compression space for sucking and discharging the working gas between the roller and the cylinder, a scroll compressor in which a compression space in which an operating gas is sucked and discharged is formed between a fixed scroll and a fixed scroll and the orbiting scroll rotates along the fixed scroll to compress the refrigerant.

In recent years, among the reciprocating compressors, particularly, there has been developed a linear compressor which is capable of improving the compression efficiency without mechanical loss due to motion switching by causing the reciprocating linear motion of the piston.

Normally, the linear compressor is configured to suck and compress the refrigerant while discharging the refrigerant while moving the piston in the sealed shell by reciprocating linear motion within the cylinder by the linear motor.

9 is a view showing an outer stator of a linear motor according to the related art.

9, an outer stator 1 of a linear motor according to the prior art includes a bobbin 2 having a coil wound thereon, a plurality of stator cores (not shown) spaced apart from each other by a predetermined distance in the circumferential direction of the bobbin 2 3).

An input terminal portion 4 to which an input end of the coil is connected is integrally formed in an area between adjacent stator cores 3 in the bobbin 2. An output terminal portion 5 to which an output end of the coil is connected is integrally formed in an area between two stator cores 3 adjacent to each other in the bobbin 2.

However, according to the linear motor of the related art, since the input stage coupling portion 4 and the output stage coupling portion 5 are designed separately from the bobbin, there is a problem that the structure design and production of the bobbin are difficult.

Further, when the size of the linear motor is to be reduced, it is more difficult to form the input terminal portion 4 and the output terminal portion 5 in the bobbin.

Since the input terminal portion 4 and the output terminal portion 5 are divided into the input terminal portion 4 and the output terminal portion 5, a plurality of terminals are connected to the respective input terminal portions 4 And the output terminal unit 5, so that a troublesome operation is incurred.

It is an object of the present invention to provide a linear motor and a linear compressor which can constitute a terminal portion to which a terminal is connected irrespective of the size.

A linear motor according to one aspect, comprising: a bobbin having a coupling mechanism; a coil wound around the bobbin and having an input end and an output end; a plurality of stator cores surrounding the bobbin; And a terminal mechanism including an input terminal portion to be connected and an output terminal portion to which the output terminal is connected.

Further, the coupling mechanism may be disposed between adjacent stator cores in the bobbin.

Further, the terminal mechanism may be spaced apart from the plurality of stator cores in a state of being coupled to the coupling mechanism.

Also, the terminal mechanism may be formed with at least one hole through which the input and output ends of the coil pass.

Further, the terminal mechanism may be slidably coupled to the coupling mechanism.

The coupling mechanism may include an extension portion extending in one direction in the bobbin and a plurality of engagement ribs extending in a sloping direction from the extension portion on both sides of the extension portion.

In addition, the terminal mechanism may include a plurality of rib-engaging portions coupled to the plurality of engaging ribs and spaced from each other.

The coupling mechanism may include a first coupling portion and a second coupling portion spaced apart from the first coupling portion, and the terminal mechanism may be coupled to the first coupling portion and the second coupling portion, respectively.

The first coupling portion includes a first extending portion extending in one direction from the bobbin and a first coupling rib bent at the first extending portion, and the second coupling portion extends in one direction from the bobbin. And a second engaging rib extending in a direction opposite to the extending direction of the first engaging rib in the second extending portion.

In addition, the terminal mechanism may include a plurality of rib engagement portions spaced from each other and coupled with the first engagement rib and the second engagement rib.

In addition, the coupling mechanism and the terminal mechanism may be provided with a hook, and the other may be provided with a hook slot to which the hook is coupled.

Further, the terminal mechanism may be provided with a coupling protrusion, and the coupling mechanism may be formed with a coupling groove for coupling the coupling protrusion.

A linear compressor according to another aspect includes: a cylinder; A piston reciprocable in the axial direction within the cylinder; And a linear motor for providing power to the piston, wherein the linear motor comprises: a first stator; A second stator disposed apart from the first stator; And a permanent magnet movable in the axial direction between the first stator and the second stator, wherein the first stator comprises: a bobbin wound with a coil; a plurality of stator cores surrounding the bobbin; An engaging mechanism disposed between two adjacent stator cores of the plurality of stator cores, and a terminal mechanism coupled to the engaging mechanism and to which the coils are connected.

According to the present invention, since the terminal portion is not formed in the bobbin, the structure of the bobbin is simplified, and the terminal portion can be constructed regardless of the size of the bobbin or the size of the linear motor.

That is, even when the size of the bobbin or the linear motor is reduced, the terminal portion can be separately formed and coupled to the bobbin. Therefore, the terminal portion can be configured and the coil can be connected.

Further, since the terminal portion is spaced from the bobbin in the axial direction, a space is provided between the terminal portion and the bobbin for connecting the input terminal and the output terminal of the coil to the terminal portion. Therefore, And can be connected to the terminal portion.

Also, since the terminal portion includes the input terminal portion and the output terminal portion, one terminal can be coupled to the terminal portion, so that the structure of the terminal is hard and an operator can easily connect the terminal to the terminal portion.

1 is a sectional view showing a configuration of a linear compressor according to a first embodiment;
2 is a perspective view of a linear motor according to the first embodiment;
Fig. 3 is a view showing a terminal device coupled to a bobbin according to the first embodiment; Fig.
4 is a perspective view showing a terminal portion of Fig.
5 is a view showing a terminal device coupled to a bobbin according to the second embodiment;
6 is a view showing a terminal device coupled to a bobbin according to the third embodiment;
7 is a view showing a terminal device coupled to a bobbin according to the fourth embodiment;
8 is a schematic view of a linear compressor according to a fifth embodiment;
9 is a view showing an outer stator of a linear motor according to the prior art.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

It is also to be understood that the spirit of the present invention includes embodiments that are derived not only by a plurality of embodiments themselves, but also by a combination of a plurality of embodiments.

1 is a cross-sectional view showing a configuration of a linear compressor according to a first embodiment.

1, the linear compressor 100 according to the first embodiment includes a substantially cylindrical shell 101, a first cover 102 coupled to one side of the shell 101, And may include a second cover 103.

The first cover 102 is disposed on the right side of the shell 101 and the second cover 103 is disposed on the right side of the shell 101. [ And may be located on the left side of the shell 101.

In a broad sense, the first cover 102 and the second cover 103 can be understood as a constitution of the shell 101. [

The linear compressor 100 includes a cylinder 120 provided in the shell 101, a piston 130 linearly reciprocating in the cylinder 120, and a driving force The linear motor 200 may further include a linear motor.

When the linear motor 200 is driven, the piston 130 can reciprocate at a high speed. The operating frequency of the linear compressor 100 according to the present embodiment is approximately 100 Hz.

In more detail, the linear compressor 100 may further include a suction unit 104 through which the refrigerant flows and a discharge unit 105 through which the refrigerant compressed in the cylinder 120 is discharged.

The suction unit 104 may be coupled to the first cover 102 and the discharge unit 105 may be coupled to the second cover 103.

The refrigerant sucked through the suction portion 104 flows into the piston 130 through the suction muffler 150. In the course of the refrigerant passing through the suction muffler 150, the noise can be reduced. The suction muffler 150 may include a first muffler 151 and a second muffler 153 coupled to the first muffler 151. At least a portion of the suction muffler 150 may be located within the piston 130.

The piston 130 may include a substantially cylindrical piston body 131 and a piston flange portion 132 extending radially from the piston body 131.

The piston body 131 reciprocates within the cylinder 120 and the piston flange 132 can reciprocate outside the cylinder 120.

The piston 130 may be made of an aluminum material (aluminum or aluminum alloy) which is a non-magnetic material. Since the piston 130 is made of an aluminum material, the magnetic flux generated in the linear motor 200 can be prevented from being transmitted to the piston 130 and leaking to the outside of the piston 130. The piston 130 may be formed by a forging method, although not limited thereto.

Meanwhile, the cylinder 120 may be made of an aluminum material (aluminum or aluminum alloy) which is a nonmagnetic material. The material composition ratio of the cylinder 120 and the piston 130, that is, kind and composition ratio, may be the same.

Since the cylinder 120 is made of an aluminum material, it is possible to prevent a magnetic flux generated in the linear motor 200 from being transmitted to the cylinder 120 and leaking to the outside of the cylinder 120. The cylinder 120 may be formed by an extrusion rod processing method, although not limited thereto.

The piston 130 and the cylinder 120 are made of the same material (aluminum), so that the coefficients of thermal expansion are equal to each other. During the operation of the linear compressor 100, a high temperature (about 100 ° C) environment is created inside the shell 100. Since the thermal expansion coefficient of the piston 130 is the same as that of the cylinder 120, And the cylinder 120 can be thermally deformed by the same amount.

As a result, since the piston 130 and the cylinder 120 are thermally deformed in different sizes or directions, interference between the piston 130 and the cylinder 120 can be prevented.

The cylinder 120 may receive at least a portion of the suction muffler 150 and at least a portion of the piston 130.

In the cylinder 120, a compression space P in which the refrigerant is compressed by the piston 130 may be formed. A suction hole 133 for introducing a refrigerant into the compression space P is formed in a front portion of the piston 130. The suction hole 133 is selectively provided in front of the suction hole 133, A suction valve 135 is provided. A coupling hole to which a predetermined coupling member is coupled may be formed in a substantially central portion of the suction valve 135.

A discharge cover 160 for forming a discharge space or a discharge path for the refrigerant discharged from the compression space P and a discharge cover 160 coupled to the discharge cover 160 and disposed in front of the compression space P, A discharge valve assembly 161, 162, and 163 for selectively discharging compressed refrigerant may be provided.

The discharge valve assemblies 161, 162, and 163 are opened when the pressure in the compression space P is equal to or higher than the discharge pressure, and the refrigerant is discharged to the discharge space of the discharge cover 160, A valve spring 162 provided between the discharge valve 161 and the discharge cover 160 for applying an elastic force in the axial direction and a stopper 163 for limiting the amount of deformation of the valve spring 162 .

Here, the compression space P is a space formed between the suction valve 135 and the discharge valve 161. The suction valve 135 is disposed on one side of the compression space P and the discharge valve 161 can be disposed on the other side of the compression space P, have. The discharge valve 161 may be movably disposed at a front end of the cylinder 120.

The "axial direction" may be understood as a direction in which the piston 130 reciprocates or a direction in which the "permanent magnet" reciprocates.

In the "axial direction", the direction from the suction portion 104 toward the discharge portion 105, that is, the direction in which the refrigerant flows is referred to as "forward" and the opposite direction is defined as "rearward".

On the other hand, "radial direction" can be understood as a direction perpendicular to the direction in which the piston 130 reciprocates.

The stopper 163 may be seated in the discharge cover 160 and the valve spring 162 may be seated in the rear of the stopper 163. The discharge valve 161 is coupled to the valve spring 162 and the rear or rear surface of the discharge valve 161 is positioned to be supported on the front surface of the cylinder 120.

The valve spring 162 may include a plate spring, for example.

When the pressure in the compression space P is lower than the discharge pressure and the suction pressure is lower than the suction pressure in the reciprocating linear motion of the piston 130 in the cylinder 120, the suction valve 135 is opened, Is sucked into the compression space (P). On the other hand, when the pressure in the compression space P becomes equal to or higher than the suction pressure, the refrigerant in the compression space P is compressed while the suction valve 135 is closed.

On the other hand, when the pressure in the compression space P becomes equal to or higher than the discharge pressure, the valve spring 162 is deformed to open the discharge valve 161. The refrigerant is discharged from the compression space P, And is discharged into the discharge space of the cover 160.

The refrigerant flowing in the discharge space of the discharge cover 160 flows into the loop pipe 165. The loop pipe 165 is coupled to the discharge cover 160 and extends to the discharge part 105 to guide the compressed refrigerant in the discharge space to the discharge part 105. For example, the loop pipe 178 may have a round shape extending in a predetermined direction and may be coupled to the discharge unit 105.

The linear compressor 100 may further include a frame 110 coupled to the outside of the cylinder 120. The frame 110 is configured to fix the cylinder 120 and can be fastened to the cylinder 120 by a separate fastening member. The frame 110 is disposed to surround the cylinder 120. That is, the cylinder 120 can be received inside the frame 110. The discharge cover 160 may be coupled to the front surface of the frame 110.

On the other hand, at least a portion of the gaseous refrigerant in the high-pressure gas refrigerant discharged through the opened discharge valve 161 flows through the space of the portion where the cylinder 120 and the frame 110 are coupled to the outer peripheral surface side of the cylinder 120 Can flow.

The refrigerant flows into the cylinder 120 through the nozzle unit 123 formed in the cylinder 120. The introduced refrigerant may flow into the space between the piston 130 and the cylinder 120 so that the outer circumferential surface of the piston 130 is spaced from the inner circumferential surface of the cylinder 120. Accordingly, the introduced refrigerant can function as a "gas bearing " which reduces friction with the cylinder 120 during reciprocation of the piston 130. [

The linear motor 200 includes a first stator 210 disposed to surround the cylinder 120, a second stator 250 disposed apart from the first stator 210, And a permanent magnet 260 positioned in a space between the first stator 210 and the second stator 250.

In this specification, either one of the first stator 210 and the second stator 220 may be an outer stator and the other may be an inner stator.

In FIG. 1, for example, the first stator 210 is an outer stator and the second stator 250 is an inner stator.

The permanent magnets 260 can reciprocate linearly by mutual electromagnetic forces between the first stator 210 and the second stator 250. The permanent magnet 260 may be composed of a single magnet having one pole or a magnet having three poles. A plurality of permanent magnets 260 may be provided on the outer side of the second stator 250.

The permanent magnet (260) may be coupled to the piston (130) by a connecting member (138). In detail, the connecting member 138 may be coupled to the piston flange portion 132 and may be bent and extended toward the permanent magnet 260. As the permanent magnet 260 reciprocates, the piston 130 can reciprocate axially together with the permanent magnet 260 by the connecting member 138.

The linear motor 200 may further include a fixing member 262 for fixing the permanent magnet 260 to the connecting member 138. The fixing member 262 may be composed of a glass fiber or a mixture of carbon fiber and resin. The fixing member 262 is provided so as to surround the inside and the outside of the permanent magnet 260 so that the permanent magnet 260 and the connecting member 138 can be firmly engaged with each other.

The first stator 210 includes coil windings 220 and 240 and a plurality of stator cores 211 (see FIG. 2) provided at regular intervals in the circumferential direction of the coil windings 220 and 240 can do.

Each of the plurality of stator cores 211 is formed by stacking a plurality of laminations in a circumferential direction and may be disposed to surround the coil winding bodies 220 and 240.

The coil windings 220 and 240 may include a bobbin 220 and a coil 240 wound around the bobbin 220 in the circumferential direction. The cross section of the coil 240 may have a polygonal shape, for example, a hexagonal shape.

The linear compressor 100 includes a supporter 137 for supporting the piston 130 and a back cover 170 spaced from one side of the supporter 137 and spring-coupled to the supporter 137 .

The supporter 137 may be coupled to the piston flange 132 and the connecting member 138 by a predetermined fastening member.

A suction guide portion 155 is coupled to the front of the back cover 170. The suction guide part 155 guides the refrigerant sucked through the suction part 104 into the suction muffler 150.

The linear compressor 100 may further include a plurality of springs 176 whose natural frequencies are adjusted so that the piston 130 can resonate.

The plurality of springs 176 include a first spring supported between the supporter 137 and the stator cover 270 and a second spring supported between the supporter 137 and the back cover 170 can do.

The linear compressor 100 may further include leaf springs 172 and 174 provided on both sides of the shell 101 to allow the internal parts of the compressor 100 to be supported by the shell 101.

The leaf springs 172 and 174 may include a first leaf spring 172 coupled to the first cover 102 and a second leaf spring 174 coupled to the second cover 103 . The first leaf spring 172 can be fitted to a portion where the shell 101 and the first cover 102 are coupled and the second leaf spring 174 can be engaged with the shell 101, 2 cover 103 is engaged.

FIG. 2 is a perspective view of a linear motor according to a first embodiment, FIG. 3 is a view showing a terminal device coupled to a bobbin according to the first embodiment, and FIG. 4 is a perspective view showing the terminal device of FIG.

2 to 4, a coupling mechanism 221 for coupling the terminal mechanism 230 may be provided between adjacent two stator cores 211 in the bobbin 220. As shown in FIG.

That is, in this embodiment, the terminal mechanism 230 is not formed integrally with the bobbin 220, but may be coupled to the bobbin 220 while being separately manufactured from the bobbin 220.

Therefore, according to the present invention, the structure of the bobbin 220 is simplified, and the terminal unit 230 can be configured regardless of the size of the bobbin 220 or the size of the linear motor 200.

The terminal mechanism 230 may include a body 235 having an input terminal 231 to which the input terminal of the coil 240 is connected and an output terminal 232 to which the output terminal of the coil 240 is connected .

The input terminal and the output terminal of the coil 240 can be connected to the input terminal portion 231 and the output terminal portion 232 while the terminal mechanism 230 is coupled to the coupling mechanism 221.

The coupling mechanism 221 may include a plurality of coupling portions 222 and 223 spaced from each other.

The plurality of engaging portions 222 and 223 may include a first engaging portion 222 and a second engaging portion 223. The terminal mechanism 230 may be coupled to the first engagement portion 222 and the second engagement portion 223, respectively.

Each of the engaging portions 222 and 223 includes an extension portion 224 extending in the axial direction in the bobbin 220 and a coupling portion 224 extending in the inclining direction from the extension portion 224 Ribs 225 may be included.

At this time, the engaging ribs 225 of the first engaging part 222 and the second engaging part 223 may extend in a direction away from or at a distance from the extended part 224. 3, the coupling ribs 225 of the first coupling portion 222 and the second coupling portion 223 extend in directions away from each other at the extended portion 224.

For example, the engaging rib 225 of the first engaging portion 222 may extend in a direction opposite to the engaging rib 225 of the second engaging portion 223.

The terminal mechanism 230 may be slidingly coupled to the coupling mechanism 221 by way of example.

The terminal mechanism 230 may include a plurality of rib coupling portions 233 and 234 to which the coupling ribs 225 of the coupling portions 222 and 223 are coupled. The plurality of rib joint portions 233 and 234 may be spaced apart from each other and the engagement ribs 225 of the engagement portions 222 and 223 may be positioned between the plurality of rib joint portions 233 and 234.

The body 235 of the terminal mechanism 230 may include one or more holes 236 and 237 through which the input and output ends of the coil 240 pass. The operator can connect the input terminal and the output terminal of the coil 240 to the input terminal portion 231 and the output terminal portion 232 while passing through the holes 236 and 236, respectively. In FIG. 4, for example, two holes are provided in the terminal unit 230, but it is also possible for the input and output ends to pass through one hole at the same time.

The terminal device 230 may be connected to a terminal 290 to which a power line for power supply is connected.

At this time, the terminal mechanism 230 may be axially spaced from the bobbin 220. The terminal mechanism 230 may be axially spaced from the stator core 211 in a state where the terminal mechanism 230 is coupled to the coupling mechanism 221.

According to the present embodiment, a space for connecting the input terminal and the output terminal of the coil 240 to the terminal mechanism 230 is secured between the terminal mechanism 230 and the bobbin 220, And an input terminal and an output terminal of the coil 240 can be connected to the terminal unit 230. FIG.

Since the terminal mechanism 230 includes the input terminal portion 231 and the output terminal portion 240 so that one terminal 290 can be coupled to the terminal mechanism 230, And it is advantageous that an operator can easily connect the terminal 290 to the terminal portion 230. [

The terminal 290 is connected to the terminal device 230 in the state where the input terminal and the output terminal of the coil 240 are connected to the terminal device 230. Alternatively, May be directly connected to the terminal 290 while passing through the terminal mechanism 230.

5 is a view showing a terminal device coupled to a bobbin according to the second embodiment.

The present embodiment is the same as the first embodiment in the other portions, but there is a difference in the form of the coupling mechanism. Therefore, only the characteristic parts of the present embodiment will be described below, and the same parts as those of the first embodiment will be described in the description of the first embodiment.

Referring to FIG. 5, the bobbin 220 according to the second embodiment may include a coupling mechanism 226.

The coupling mechanism 226 includes an extension portion 227 extending in the axial direction in the bobbin 220 and a plurality of coupling ribs 227 extending in the inclined direction from the extension portion 227 in the extension portion 227. [ Lt; RTI ID = 0.0 > 228 < / RTI > The plurality of engaging ribs 228 may extend in a direction away from each other at the extended portion 227, for example.

The terminal portion 280 of the present embodiment may include a plurality of rib engagement portions 281 and 282 to which the plurality of engagement ribs 228 are coupled.

According to the present embodiment, there is an advantage that the structure of the coupling mechanism 280 is simplified.

6 is a view showing a terminal device coupled to a bobbin according to the third embodiment.

The present embodiment is the same as the first embodiment in the other portions, but there is a difference in the form of the coupling mechanism. Therefore, only the characteristic parts of the present embodiment will be described below, and the same parts as those of the first embodiment will be described in the description of the first embodiment.

Referring to FIG. 6, the bobbin 220 according to the third embodiment may include a coupling mechanism having a plurality of coupling portions 421. The plurality of engaging portions 421 may include a hook 422 and the terminal portion 430 may include a hook slot to which the hook 422 is coupled.

Alternatively, conversely, it is also possible that the terminal mechanism 430 includes a hook, and the coupling mechanism includes a hook slot.

In this embodiment, the terminal mechanism 430 may be coupled to the coupling mechanism in the axial direction, for example.

7 is a view showing a terminal device coupled to a bobbin according to the fourth embodiment.

The present embodiment is the same as the first embodiment in the other portions, but there is a difference in the form of the coupling mechanism. Therefore, only the characteristic parts of the present embodiment will be described below, and the same parts as those of the first embodiment will be described in the description of the first embodiment.

7, the terminal mechanism 450 according to the fourth embodiment includes a coupling protrusion 452, and a coupling mechanism 440 formed on the bobbin 220 is provided with a coupling groove for coupling the coupling protrusion, Lt; RTI ID = 0.0 > 442 < / RTI >

Alternatively, it is also possible that the coupling mechanism 440 includes the coupling protrusion 452, and the terminal mechanism 450 includes the coupling groove 442 to which the coupling protrusion 452 is coupled.

8 is a schematic view of a linear compressor according to a fifth embodiment.

The structure of the linear motor of this embodiment is the same as that of the first embodiment, but there is a difference in the lubrication method between the piston and the cylinder. Therefore, only the characteristic parts of the present embodiment will be described below.

Referring to FIG. 8, the linear compressor 300 according to the present embodiment may include a cylinder 320, a piston 330, a linear motor 400, and an oil supply device 360.

A predetermined oil may be stored in the shell forming the outline of the linear compressor 300. The oil supply device 360 for pumping oil may be provided in the lower portion of the shell. The oil supply device 360 is operated by the vibration generated as the piston 330 linearly reciprocates to pump the oil upward.

The linear compressor 300 may further include an oil supply pipe 365 for guiding the flow of oil from the oil supply device 360. The oil supply pipe 365 may extend from the oil supply device 360 to a space between the cylinder 320 and the piston 330.

The oil pumped from the oil supply device 360 is supplied to the space between the cylinder 320 and the piston 330 via the oil supply pipe 365 to perform the cooling and lubricating action.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Linear compressor 110: Frame
120: cylinder 130: piston
200: Linear motor 210: First stator
220: bobbin 221: coupling mechanism
230 terminal device 240 coil
250: second stator 260: permanent magnet

Claims (13)

A bobbin having a coupling mechanism,
A coil wound around the bobbin and having an input end and an output end;
A plurality of stator cores surrounding the bobbin,
And a terminal mechanism coupled to the coupling mechanism and including an input terminal portion to which the input terminal is connected and an output terminal portion to which the output terminal is connected. The method according to claim 1,
Wherein the coupling mechanism is disposed between adjacent two stator cores in the bobbin. The method according to claim 1,
And the terminal mechanism is separated from the plurality of stator cores in a state of being coupled to the coupling mechanism. The method according to claim 1,
Wherein at least one hole for allowing an input end and an output end of the coil to pass therethrough is formed in the terminal mechanism. The method according to claim 1,
And the terminal mechanism is slidingly coupled to the coupling mechanism. The method according to claim 1,
Wherein the coupling mechanism includes an extension portion extending in one direction from the bobbin and a plurality of engagement ribs extending from the both sides of the extension portion in an inclined direction with the extension portion. The method according to claim 6,
Wherein the terminal mechanism includes a plurality of rib engagement portions coupled to the plurality of engagement ribs and spaced apart from each other. The method according to claim 1,
Wherein the coupling mechanism includes a first coupling portion and a second coupling portion that is spaced apart from the first coupling portion,
And the terminal mechanism is coupled to the first engaging portion and the second engaging portion, respectively. 9. The method of claim 8,
Wherein the first coupling portion includes a first extending portion extending in one direction in the bobbin and a first coupling rib bent in the first extending portion,
Wherein the second engaging portion includes a second extending portion extending in one direction in the bobbin and a second engaging rib extending in a direction opposite to the extending direction of the first engaging rib in the second extending portion. 10. The method of claim 9,
Wherein the terminal mechanism includes a plurality of rib engagement portions spaced from each other and coupled with the first engagement rib and the second engagement rib. The method according to claim 1,
Wherein one of the coupling mechanism and the terminal mechanism is provided with a hook,
And the other is provided with a hook slot to which the hook is coupled. The method according to claim 1,
The terminal mechanism is provided with a coupling protrusion,
Wherein the engaging mechanism is provided with an engaging groove for engaging with the engaging projection. cylinder;
A piston reciprocable in the axial direction within the cylinder;
And a linear motor for providing power to the piston,
In the linear motor,
A first stator;
A second stator disposed apart from the first stator; And
And a permanent magnet movable in the axial direction between the first stator and the second stator,
The first stator includes a bobbin to which a coil is wound,
A plurality of stator cores surrounding the bobbin,
A coupling mechanism disposed between adjacent stator cores of the plurality of stator cores in the bobbin,
And a terminal mechanism coupled to the coupling mechanism and to which the coil is connected.

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