CN206341391U - A kind of skeleton coil and moving-iron receiver - Google Patents
A kind of skeleton coil and moving-iron receiver Download PDFInfo
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- CN206341391U CN206341391U CN201621402571.9U CN201621402571U CN206341391U CN 206341391 U CN206341391 U CN 206341391U CN 201621402571 U CN201621402571 U CN 201621402571U CN 206341391 U CN206341391 U CN 206341391U
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Abstract
The utility model embodiment discloses a kind of coil, including：Skeleton, wire, the first pad and the second pad；The skeleton includes conductive part and the hollow support portion for supporting the wire, and the conductive part is fixedly connected with the hollow support portion；Conductive part side wall is respectively arranged at two ends with the first recess and the second recess, and first pad is fixed at first recess, second pad is fixed at second recess；The wire includes first the end of a thread and second the end of a thread, and the wire is wrapped in the hollow support portion, and described first the end of a thread is fixed on first pad, and described second the end of a thread is fixed on second pad.Through the above way, the utility model embodiment eliminates lead portion of the prior art, and the coiling of whole coil is only completed with a kind of line, and all machine is automatically performed again during the entire process of coil is made, and without manual manufacture, saves manpower.
Description
Technical field
The utility model embodiment is related to receiver field, and more particularly to a kind of skeleton coil and dynamic iron are called
Device.
Background technology
With moving-iron receiver by large-scale application in consumer earphone industry, its cost control and the automation of volume production
Degree also becomes more and more important.
Coil is an essential parts in moving-iron receiver, and the coil of current moving-iron receiver is main by two
It is grouped into, body and lead.Due to receiver properties of product requirement, the line footpath of line used by this two parts be it is different, lead
Line footpath needs thicker than bulk line.Body coiling is completed on semiautomatic winding machine, and needs one to aid in winding fixture,
Machine can only once make a coil, after the completion of coiling, and auxiliary fixture needs to scrap.And the combination of body and lead needs operation
Member is pure under the microscope to be had been manually done, and its technical scheme is：After body coiling is finished, body the end of a thread is wound 2~3 on lead
Circle, then welded together both with scolding tin, this technology is semi-automatic semi-hand, causes its production capacity limited, and cost
It is more much higher than other parts.
Utility model content
The utility model embodiment is mainly solving the technical problems that provide a kind of coil, without making by hand and improving
The efficiency of production.
In order to solve the above technical problems, the technical scheme that the utility model is used is：A kind of coil is provided, including：
Skeleton, wire, the first pad and the second pad；Skeleton includes conductive part and the hollow support portion for supporting wire, conductive part
It is fixedly connected with hollow support portion；Conductive part side wall is respectively arranged at two ends with the first recess and the second recess, and the first pad fixes
At the first recess, the second pad is fixed at the second recess；Wire includes first the end of a thread and second the end of a thread, and wire is wrapped in sky
On heart supporting part, and first the end of a thread is fixed on the first pad, and second the end of a thread is fixed on the second pad.
Wherein, conductive part includes U-shaped fixed part, the first terminal and Second terminal, wherein, U-shaped fixed part has insulating properties
Can, the first terminal and the conductive energy of Second terminal；One end of the first terminal be embedded into U-shaped fixed part and with the first pad
Connection, one end of Second terminal is embedded into U rows fixed part and is connected with the second pad.
Wherein, hollow support portion includes first base, second base and hollow cylinder, and first base and second base are fixed
In the two ends of hollow cylinder, and first base and second base are provided with the inner space of through hole, through hole and hollow cylinder
Connection, wire is looped around the outer wall of hollow cylinder, and conductive part is fixed in first base.
Wherein, conductive part and hollow support portion buckle are fixed, are welded and fixed or are adhesively fixed.
In order to solve the above technical problems, another technical scheme that the utility model is used is：There is provided a kind of dynamic iron called
Device, including：Shell, coil and armature, armature and coil are arranged in shell；Skeleton coil includes skeleton, wire, first
Pad and the second pad；Skeleton includes conductive part and the hollow support portion for supporting wire, and conducting end and hollow support portion are solid
Fixed connection；The side wall that conductive part includes is respectively arranged at two ends with the first recess and the second recess, and it is recessed that the first pad is fixed on first
At portion, the second pad is fixed at the second recess；Wire includes first the end of a thread and second the end of a thread, and wire is wrapped in hollow support portion
On, and first the end of a thread is fixed on the first pad, and second the end of a thread is fixed on the second pad；Armature is " U "-shaped, hollow support
Portion is set in one end of armature.
Wherein, conductive part includes U-shaped fixed part, the first terminal and Second terminal, wherein, U-shaped fixed part has insulating properties
Can, the first terminal and the conductive energy of Second terminal；The other end of the first terminal is embedded into U-shaped fixed part and welded with first
Disk is connected, and the other end of Second terminal is embedded into U rows fixed part and is connected with the second pad.
Wherein, hollow support portion includes first base, second base and hollow cylinder, and first base and second base are fixed
In the two ends of hollow cylinder, and first base and second base are provided with the inner space of through hole, through hole and hollow cylinder
Connection, wire is looped around the outer wall of hollow cylinder, and conductive part is fixed in second base.
Wherein, conductive part and hollow support portion buckle are fixed, are welded and fixed or are adhesively fixed.
Wherein, receiver also includes audio terminal；Shell is provided with an interface holes, and audio terminal is arranged in interface holes, the
One terminal and Second terminal are connected with audio terminal.
Wherein, shell includes upper casing, the fixation of lower casing first ball, the first elastic deformation part, the second fixation ball and the second elasticity
Deformation part, lower casing includes the lower wall that base plate and the edge from base plate are upwardly extended, and upper casing includes top board and the edge from top board
The upper side wall extended downwardly；The first fixing groove and the second fixing groove are provided with the top of lower wall, the side wall of the first fixing groove is set
The first buckling groove is equipped with, the first buckling groove is connected with the first fixing groove, the first clamping is fixed in one end of the first elastic deformation part
The bottom of groove, and the other end with first fixation ball fix, when the first elastic deformation part be in nature retracted position when, first consolidate
Determine ball and at least partly protrude from the first buckling groove and embedded first fixing groove, the side wall of the second fixing groove is provided with the second clamping
Groove, the second buckling groove is connected with the second fixing groove, and the bottom of the second buckling groove is fixed in one end of the second elastic deformation part, and
The other end is fixed with the second fixation ball, when the second elastic deformation part is in nature retracted position, and second fixes ball at least part
Protrude from the second buckling groove and embedded second fixing groove；The bottom of upper side wall has extended downwardly the first extension and the second extension
Portion, and the first extension is provided with the first fixed swage, and the second extension is provided with the second fixed swage.
The beneficial effect of the utility model embodiment is：It is different from the situation of prior art, the utility model embodiment party
Formula provides a kind of coil, and by the way that coil is wrapped in the hollow support portion of skeleton, the first pad and the second pad are fixed on and led
In electric portion, two the end of a thread of wire are separately fixed on the first pad and the second pad, when coil is used, utilize skeleton
Conductive part carries out conduction, so eliminates lead portion of the prior art, and the coiling of whole coil is only completed with a kind of line, and
And all machine is automatically performed again during the entire process of coil is made, and without manual manufacture, saves manpower.
Brief description of the drawings
Fig. 1 is a kind of skeleton schematic diagram for coil that the utility model is provided；
Fig. 2 is a kind of schematic diagram for coil that the utility model is provided；
Fig. 3 is a kind of profile for moving-iron receiver that the utility model is provided；
Fig. 4 is a kind of moving-iron receiver center line ring framework schematic diagram that the utility model is provided；
Fig. 5 is a kind of moving-iron receiver coil schematic diagram that the utility model is provided；
Fig. 6 is shell fixed form schematic diagram in a kind of moving-iron receiver that the utility model is provided.
Embodiment
For the ease of understanding the utility model, with reference to the accompanying drawings and detailed description, the utility model is carried out more
Detailed description.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element
There may be above or therebetween one or more elements placed in the middle.When an element is expressed " connection " another element, it can
To be directly to another element or there may be one or more elements placed in the middle therebetween.This specification is used
Term " vertical ", " level ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, technology all used in this specification and scientific terminology are with belonging to skill of the present utility model
The implication that the technical staff in art field is generally understood that is identical.In art used in the description of the present utility model in this specification
Language is intended merely to describe the purpose of specific embodiment, is not intended to limit the utility model.Art used in this specification
Language "and/or" includes the arbitrary and all combination of one or more related Listed Items.
Refering to Fig. 1 and Fig. 2, the utility model embodiment provides a kind of coil 10, including：Skeleton 11, wire 12, first
The pad 14 of pad 13 and second；The skeleton 11 includes conductive part 111 and the hollow support portion 112 for supporting the wire,
The conductive part 111 is fixedly connected with the hollow support portion 112；The side wall of conductive part 111 is respectively arranged at two ends with first
The recess 1112 of recess 1111 and second, first pad 13 is fixed at first recess 1111, second pad 14
It is fixed at second recess 1112；The wire 12 includes first the end of a thread 121 and second the end of a thread 122, and the wire 12 is twined
It is wound in the hollow support portion 112, and described first the end of a thread 121 is fixed on first pad 13, second line
First 122 are fixed on second pad 14.It should be noted that the first pad 13 and being fixed on first by way of electric welding
Recess 1111, equally, the second pad 14 are also that the second recess 1112 is fixed on by way of electric welding.
In the prior art, it is to enter coiling by semiautomatic winding machine and an auxiliary winding fixture and complete a coil,
After the completion of coil body coiling, two the end of a thread of coil body are wound on lead after 2-3 circles respectively, then with scolding tin by the end of a thread
Weld together with lead.This mode needs manpower to complete, waste of manpower, and this mode is not suitable for producing in enormous quantities,
The small tin grain produced simultaneously in welding is easy to that coil surface can be attached to, and causes hidden danger of quality.
And in the utility model embodiment, using skeleton, wire is wound on skeleton, then the end of a thread of wire is fixed
On pad on skeleton, electricity is conducted by the conductive part of skeleton, without recycling lead, simultaneously, it is not necessary to the side of scolding tin
Formula is welded, it is to avoid the hidden danger of quality such as rosin joint, soldered balls that scolding tin welded bands are come, also, wire coiling process all by machine
Device is automatically performed, without craft, substantially increases production efficiency.
In the utility model embodiment, by the way that coil is wrapped in the hollow support portion of skeleton, the first pad and second
Pad is fixed on conductive part, and two the end of a thread of wire are separately fixed on the first pad and the second pad, when coil is used
Wait, carry out conduction using the conductive part of skeleton, so eliminate lead portion of the prior art, only complete whole with a kind of line
The coiling of coil, and all machine is automatically performed during the entire process of coil is made, and without manual manufacture, saves people
Power.
Specifically, the conductive part 111 includes U-shaped fixed part 1113, the first terminal 1114 and Second terminal 1115, its
In, the U-shaped fixed part 1113 has insulating properties, the first terminal 1114 and the conductive energy of Second terminal 1115；
One end of the first terminal 1114 is embedded into the U-shaped fixed part 1113 and is connected with first pad 13, and described the
One end of two-terminal 1115 is embedded into the U rows fixed part 1113 and is connected with second pad 14.The first terminal
1114 and Second terminal 1115 be that, for conducting electricity, its material can be metal, and U-shaped fixed part has insulating properties, this
Sample in the first terminal 1114 and Second terminal 1115 by electrical conduction to the first pad 13 and the second pad 14 when, wire 12 will not be made
Produce short circuit phenomenon.
The hollow support portion 112 includes first base 1121, second base (not shown) and hollow cylinder 1122, described
First base 1121 and second base are fixed on the two ends of the hollow cylinder 1122, and the first base 1121 and second
Base is provided with through hole (not shown), and the through hole is connected with the inner space of the hollow cylinder 1122, the conductor loop
The outer wall of the hollow cylinder is wound on, the conductive part 111 is fixed in the second base.
The conductive part and hollow support portion buckle are fixed, are welded and fixed or are adhesively fixed.
Fig. 3, Fig. 4 and Fig. 5 are referred to, the utility model also provides a kind of moving-iron receiver 20, including：Shell 21, coil
22 and armature 23, the armature 23 and the coil are arranged in the shell 21；The coil 22 includes skeleton 221, led
Line 222, the first pad 223 and the second pad 224；The skeleton 221 includes conductive part 2211 and for supporting the wire
Hollow support portion 2212, the conductive part 2211 is fixedly connected with the hollow support portion 2212；The conductive part 2211 includes
Side wall be respectively arranged at two ends with the first recess 22111 and the second recess 22112, first pad 223 is fixed on described
At one recess 22111, second pad 224 is fixed at second recess 22112；The wire 222 includes First Line
First 2221 and second the end of a thread 2222, the wire 222 is wrapped in the hollow support portion 2212, and described first the end of a thread
2221 are fixed on first pad 223, and described second the end of a thread 2222 is fixed on second pad 224；The armature
23 is " U "-shaped, and the hollow support portion 2212 is set in one end of the armature 23.
Specifically, the conductive part 2211 includes U-shaped fixed part 22113, the first terminal 22114 and Second terminal 22115,
Wherein, the U-shaped fixed part 22113 has insulating properties, and the first terminal 22114 and Second terminal 22115 have conduction
Performance；The other end of the first terminal 22114 is embedded into the U-shaped fixed part 22113 and connected with first pad 223
Connect, the other end of the Second terminal 22115 is embedded into the U rows fixed part 22113 and connected with second pad 224
Connect.
The hollow support portion 2212 includes first base 22121, second base (not shown) and hollow cylinder 22122,
The first base 22121 and second base are fixed on the two ends of the hollow cylinder 22122, and the first base
22121 and second base be provided with through hole (not shown), the inner space of the through hole and the hollow cylinder 22122 connects
Logical, the wire is looped around the outer wall of the hollow cylinder 22122, and the conductive part 2211 is fixed on the first base
On 22121.
The conductive part 2211 and the buckle of hollow support portion 2212 are fixed, are welded and fixed or are adhesively fixed.
Further, the receiver 20 also includes audio terminal (not shown)；The shell 21 is provided with an interface holes (figure
Do not show), the audio terminal is arranged in the interface holes, the first terminal 22114 and Second terminal 22115 with it is described
Audio terminal is connected.
The shell 21 includes upper casing 211, the fixation of lower casing 212, first ball 213, the first elastic deformation part 214, second and consolidated
Determine the elastic deformation part 216 of ball 215 and second, lower casing 212 includes the lower wall that base plate and the edge from base plate are upwardly extended, upper casing
211 include the upper side wall that top board and the edge from top board are extended downwardly；The first fixing groove is provided with the top of the lower wall
2121 and second fixing groove 2122, the side wall of first fixing groove 2121 is provided with the first buckling groove 21211, the first buckling groove
21211 connect with first fixing groove 2121, and first buckling groove is fixed in one end of the first elastic deformation part 214
21211 bottom, and the other end with first fixation ball 213 fix, when the first elastic deformation part 214 be in nature retracted position
When, the first fixation ball 213 at least partly protrudes from the first buckling groove 21211 and embedded first fixing groove 2121, described second
The side wall of fixing groove 2122 is provided with the second buckling groove 21221, and the second buckling groove 21221 connects with second fixing groove 2122
Logical, the bottom of second buckling groove 21221 is fixed in one end of the second elastic deformation part 216, and the other end and the
Two fixation balls 215 are fixed, when the second elastic deformation part 216 is in nature retracted position, and the second fixation ball 215 at least part is convex
For the second buckling groove 21221 and embedded second fixing groove 2122；The bottom of the upper side wall has extended downwardly the first extension
The extension 2112 of portion 2111 and second, and first extension 2111 is provided with the first fixed swage 21111, described second
Extension 2112 is provided with the second fixed swage 21121.When upper casing 211 and lower casing 212 are fixed, the first fixation ball 214 can block
It is connected in the first depression 21111, the second fixation ball 215 can be connected in the second depression 21121.This fixed form is convenient and solid
Fixed is firm.
In the utility model embodiment, by the way that coil is wrapped in the hollow support portion of skeleton, the first pad and
Two pads are fixed on conductive part, and two the end of a thread of wire are separately fixed on the first pad and the second pad, are used in coil
When, conduction is carried out using the conductive part of skeleton, lead portion of the prior art is so eliminated, only completes whole with a kind of line
The coiling of individual coil, and all machine is automatically performed during the entire process of coil is made, and without manual manufacture, saves people
Power.
Of the present utility model preferably implement it should be noted that being given in specification of the present utility model and its accompanying drawing
Mode, still, the utility model can be realized by many different forms, however it is not limited to the implementation described by this specification
Mode, these embodiments are to make there is provided the purpose of these embodiments not as the extra limitation to the utility model content
Understanding to disclosure of the present utility model is more thorough comprehensive.Also, above-mentioned each technical characteristic continues to be mutually combined, formed
The various embodiments not being enumerated above, are accordingly to be regarded as the scope of the utility model specification record；Further, to this area
For those of ordinary skill, it can according to the above description be improved or be converted, and all these modifications and variations should all belong to
The protection domain of the utility model appended claims.
Claims (10)
1. a kind of coil, it is characterised in that including：Skeleton, wire, the first pad and the second pad；
The skeleton includes conductive part and the hollow support portion for supporting the wire, the conductive part and the hollow support
Portion is fixedly connected；
Conductive part side wall is respectively arranged at two ends with the first recess and the second recess, and first pad is fixed on described first
At recess, second pad is fixed at second recess；
The wire includes first the end of a thread and second the end of a thread, and the wire is wrapped in the hollow support portion, and described the
One the end of a thread is fixed on first pad, and described second the end of a thread is fixed on second pad.
2. coil according to claim 1, it is characterised in that
The conductive part includes U-shaped fixed part, the first terminal and Second terminal, wherein, the U-shaped fixed part has insulating properties
Can, the first terminal and the conductive energy of Second terminal；
One end of the first terminal is embedded into the U-shaped fixed part and is connected with first pad, the Second terminal
One end be embedded into the U-shaped fixed part and be connected with second pad.
3. coil according to claim 1, it is characterised in that
The hollow support portion includes first base, second base and hollow cylinder, and the first base and second base are fixed
In the two ends of the hollow cylinder, and the first base and second base are provided with through hole, the through hole and the sky
The inner space connection of stem body, the wire is looped around the outer wall of the hollow cylinder, and the conductive part is fixed on described the
On two bases.
4. coil according to claim 1, it is characterised in that
The conductive part and hollow support portion buckle are fixed, are welded and fixed or are adhesively fixed.
5. a kind of moving-iron receiver, it is characterised in that including：Shell, coil and armature, the armature and the coil are respectively provided with
In the shell；
The coil includes skeleton, wire, the first pad and the second pad；
The skeleton includes conductive part and the hollow support portion for supporting the wire, the conductive part and the hollow support
Portion is fixedly connected；
The side wall that the conductive part includes is respectively arranged at two ends with the first recess and the second recess, and first pad is fixed on institute
State at the first recess, second pad is fixed at second recess；
The wire includes first the end of a thread and second the end of a thread, and the wire is wrapped in the hollow support portion, and described the
One the end of a thread is fixed on first pad, and described second the end of a thread is fixed on second pad；
The armature is " U "-shaped, and the hollow support portion is set in one end of the armature.
6. moving-iron receiver according to claim 5, it is characterised in that
The conductive part includes U-shaped fixed part, the first terminal and Second terminal, wherein, the U-shaped fixed part has insulating properties
Can, the first terminal and the conductive energy of Second terminal；
The other end of the first terminal is embedded into the U-shaped fixed part and is connected with first pad, second end
The other end of son is embedded into the U-shaped fixed part and is connected with second pad.
7. moving-iron receiver according to claim 6, it is characterised in that
The hollow support portion includes first base, second base and hollow cylinder, and the first base and second base are fixed
In the two ends of the hollow cylinder, and the first base and second base are provided with through hole, the through hole and the sky
The inner space connection of stem body, the wire is looped around the outer wall of the hollow cylinder, and the conductive part is fixed on described the
On one base.
8. moving-iron receiver according to claim 5, it is characterised in that
The conductive part and hollow support portion buckle are fixed, are welded and fixed or are adhesively fixed.
9. moving-iron receiver according to claim 6, it is characterised in that the receiver also includes audio terminal；
The shell is provided with an interface holes, and the audio terminal is arranged in the interface holes, the first terminal and the second end
Son is connected with the audio terminal.
10. moving-iron receiver according to claim 9, it is characterised in that
The shell includes upper casing, lower casing, the first fixation ball, the first elastic deformation part, the second fixation ball and the second elastic deformation
Part, lower casing includes the lower wall that base plate and the edge from base plate are upwardly extended, and edge of the upper casing including top board and from top board is downward
The upper side wall of extension；
The first fixing groove and the second fixing groove are provided with the top of the lower wall, the side wall of first fixing groove is provided with
First buckling groove, the first buckling groove is connected with first fixing groove, and one end of the first elastic deformation part is fixed on described
The bottom of first buckling groove, and the other end with first fixation ball fix, when the first elastic deformation part be in nature retracted position
When, the first fixation ball at least partly protrudes from the first buckling groove and embedded first fixing groove, the side wall of second fixing groove
The second buckling groove is provided with, the second buckling groove is connected with second fixing groove, and one end of the second elastic deformation part is fixed
In the bottom of second buckling groove, and the other end is fixed with the second fixation ball, when the second elastic deformation part in stretching naturally
During contracting state, the second fixation ball at least partly protrudes from the second buckling groove and embedded second fixing groove；
The bottom of the upper side wall has extended downwardly the first extension and the second extension, and first extension is provided with
First fixed swage, second extension is provided with the second fixed swage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402571.9U CN206341391U (en) | 2016-12-20 | 2016-12-20 | A kind of skeleton coil and moving-iron receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402571.9U CN206341391U (en) | 2016-12-20 | 2016-12-20 | A kind of skeleton coil and moving-iron receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206341391U true CN206341391U (en) | 2017-07-18 |
Family
ID=59300873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621402571.9U Active CN206341391U (en) | 2016-12-20 | 2016-12-20 | A kind of skeleton coil and moving-iron receiver |
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| Country | Link |
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| CN (1) | CN206341391U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484090A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| CN107635167A (en) * | 2017-09-28 | 2018-01-26 | 深圳倍声声学技术有限公司 | The manufacture method of receiver coil, its wire winding and coil neutralization circle body |
| CN107889039A (en) * | 2017-12-25 | 2018-04-06 | 苏州明氏自动化技术有限公司 | Moving-iron receiver |
-
2016
- 2016-12-20 CN CN201621402571.9U patent/CN206341391U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484090A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| CN107635167A (en) * | 2017-09-28 | 2018-01-26 | 深圳倍声声学技术有限公司 | The manufacture method of receiver coil, its wire winding and coil neutralization circle body |
| WO2019062858A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳倍声声学技术有限公司 | Receiver coil and winding process therefor, and fabrication method for coil body in coil |
| CN107889039A (en) * | 2017-12-25 | 2018-04-06 | 苏州明氏自动化技术有限公司 | Moving-iron receiver |
| CN107889039B (en) * | 2017-12-25 | 2024-05-14 | 苏州格洛佛精密科技有限公司 | Moving iron telephone receiver |
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Effective date of registration: 20210820 Address after: 518000 No.3 Factory, Qiaotou Fuqiao Industrial Zone, Fuyong Town, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN EVERWIN PRECISION TECHNOLOGY Co.,Ltd. Address before: 518000 2nd floor, building 25, Zhiheng Industrial Park, nantouguankou 2nd Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BELLSING ACOUSTIC TECHNOLOGY Co.,Ltd. |
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