CN206345251U - A kind of simple laminated dielectric transmitting mechanism - Google Patents
A kind of simple laminated dielectric transmitting mechanism Download PDFInfo
- Publication number
- CN206345251U CN206345251U CN201621484066.3U CN201621484066U CN206345251U CN 206345251 U CN206345251 U CN 206345251U CN 201621484066 U CN201621484066 U CN 201621484066U CN 206345251 U CN206345251 U CN 206345251U
- Authority
- CN
- China
- Prior art keywords
- card
- card case
- case
- horizontal
- position sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
The utility model is related to financial instrument technical field, and disclose a kind of simple laminated dielectric transmitting mechanism, including the first card case, the side of the first card case is provided with the second card case, described second side for unpacking remote first card case is provided with the 3rd card case, the first card case, the second card case and the 3rd card case are separated by dividing plate, the side of the first card case, the second card case and the 3rd card case is provided with front side board, the bottom of the front side board, which is provided with bottom plate, the front side board, is provided with card outlet.The simple laminated dielectric transmitting mechanism, pass through novel design, make that this card transmitting mechanism is simple in construction, cost is low, the function of needs is only achieved that with two drive mechanisms, a simple novel mentality of designing is provided for new many casing card issuing devices, effectively the card in card case can be transmitted, make card more quick when transmission, make the operation enhanced convenience of people.
Description
Technical field
The utility model is related to financial instrument technical field, specially a kind of simple laminated dielectric transmitting mechanism.
Background technology
Automatic card equipment is usually used in the places such as parking lot, bank, in the prior art, and the card dispensing device is general
It is made up of card case, group mechanism for card, conveyer and read-write equipment etc..Prior art has problems in that such card hair
Device is sent, due to being configured with many card casees, conveyer is needed in the non-card case for facing read-write equipment from during use
Card sends read-write equipment to, mobile cart type conveyer is used existing card-issuing equipment on the market, using mobile cart type more
Card dispensing device first the card in card case is released in moving cart by dialling mechanism for card, by dolly serve as card it is temporary, pass
Send medium, then card is sent to read-write equipment by dolly；Dial what mechanism for card was transferred in addition, also having transmitted using conveyer belt on the market
The card dispensing device of card；Using the card dispensing device of mobile cart type, part is more, and drive mechanism is more, mechanical structure compared with
Complexity, is manufactured and later maintenance cost is higher, using the card dispensing device of conveyer belt mode, blocks posture on a moving belt
It is unstable, easily break down, it is clear that prior art has further improved necessity.
Utility model content
(1) technical problem solved
In view of the shortcomings of the prior art, the utility model provides a kind of simple laminated dielectric transmitting mechanism, possesses structure
Simply, the advantages of saving people's cost, it is more complicated to solve present card dispensing device mechanical structure, manufactures and the later stage
The problem of maintenance cost is higher.
(2) technical scheme
To realize that said structure is simple, the purpose of people's cost is saved, the utility model provides following technical scheme：It is a kind of
Simple laminated dielectric transmitting mechanism, including the first card case, the side of the first card case are provided with the second card case, and described second opens
Side of the case away from the first card case is provided with the 3rd card case, the first card case, the second card case and the 3rd card case by dividing plate every
Open, the side of the first card case, the second card case and the 3rd card case is provided with front side board, and the bottom of the front side board is provided with bottom
Card outlet is provided with plate, the front side board, side of the first card case away from the second card case is provided with support frame, described
Support frame is arranged between front side board and back side panel, and first longitudinal direction doctor position inductor is provided with support frame as described above, described
Side of the first longitudinal direction doctor position inductor away from front side board is provided with the second longitudinal direction doctor position on support frame
Inductor, the side of the 3rd card case away from the second card case is provided with transverse card scraping delivery mechanism, the transverse card scraping delivery
Card slide plate is provided with the top of mechanism, the transverse card scraping delivery mechanism is arranged between front side board and back side panel, it is described after
Open up jagged on side plate, the breach is internally provided with longitudinal card scraping delivery mechanism, longitudinal card scraping delivery mechanism
Top is provided with longitudinal blade, and longitudinal card scraping delivery mechanism includes motor, and the output shaft of the motor is turned by shaft coupling
Dynamic to be connected with screw mandrel, the one end of the screw mandrel away from motor, which is rotatably connected to, to be provided with first on travelling gear, the motor and scrapes
Cunning is offered in knife balancing pole and the second scraper balancing pole, the inner bottom wall of the first card case, the second card case and the 3rd card case
Groove, the chute to be internally provided with the first horizontal doctor position sensor, the second horizontal doctor position sensor and the 3rd horizontal
To doctor position sensor, the first card case, the second card case and the side in the 3rd card bottom portion are provided with card import, institute
The bottom for stating the first card case, the second card case and the 3rd card case is provided with guide protrusions, the first card case, the second card case and
It is provided with card inlet guide groove in the card import of three card casees, the card inlet guide groove is internally provided with card.
It is preferred that, longitudinal card scraping delivery mechanism is identical with the internal structure of transverse card scraping delivery mechanism.
It is preferred that, the first scraper balancing pole and the second scraper balancing pole are symmetricly set on motor.
It is preferred that, the described first horizontal doctor position sensor, the second horizontal doctor position sensor and the 3rd are laterally scraped
Horizontal scraper is provided with the top of knife position sensor.
It is preferred that, the described first horizontal doctor position sensor, the second horizontal doctor position sensor and the 3rd are laterally scraped
Knife position sensor is spaced substantially equidistant in the inside of chute.
It is preferred that, the first longitudinal direction doctor position inductor and second longitudinal direction doctor position inductor are symmetricly set on branch
On support.
It is preferred that, the first card case is longitudinal card case, and the second card case and the 3rd card case are horizontal card case.
(3) beneficial effect
Compared with prior art, the utility model provides a kind of simple laminated dielectric transmitting mechanism, possesses following beneficial
Effect：
1st, the simple laminated dielectric transmitting mechanism, by novel design, makes this card transmitting mechanism simple in construction, cost
It is low, the function of needs is only achieved that with two drive mechanisms, one is provided simply for new many casing card issuing devices
Novel mentality of designing.
2nd, the simple laminated dielectric transmitting mechanism, by the first scraper balancing pole and the second scraper balancing pole of setting, makes
The rotate gear of the transmitting mechanism is difficult for drop-off when rotating, and more stablizes during rotation, passes through the horizontal scraper of setting
With longitudinal scraper, effectively the card in card case can be transmitted, make card more quick when transmission, make one
Operation enhanced convenience, pass through the transverse card scraping delivery mechanism of setting and longitudinal card scraping delivery mechanism so that the transmitter
Structure, which only needs to two motors, can just reach the effect that existing simple laminated dielectric transmitting mechanism is reached so that people operate
It is more simple, reduce the cost of people.
Brief description of the drawings
Fig. 1 is the antero-lateral perspective schematic diagram of simple card transmitting mechanism；
Fig. 2 is the rear perspective schematic diagram of simple card transmitting mechanism；
Fig. 3 is the schematic diagram after the hiding back side panel of simple card transmitting mechanism；
Fig. 4 is the swipe structural scheme of mechanism of simple card transmitting mechanism；
Fig. 5 is simple card case and card schematic diagram.
In figure：1 first card case, 2 second card casees, 3 the 3rd card casees, 4 dividing plates, 5 front side boards, 6 bottom plates, the outlet of 7 cards, 8 the
One longitudinal doctor position sensor, 9 second longitudinal direction doctor position sensors, 10 transverse card scraping delivery mechanisms, 11 card slide plates, 12
Longitudinal card scraping delivery mechanism, 13 first horizontal doctor position sensors, 14 second horizontal doctor position sensors, 15 the 3rd are laterally
Doctor position sensor, 16 horizontal scrapers, 17 longitudinal scrapers, 18 travelling gears, 19 first scraper balancing poles, 20 second scrapers are put down
Weighing apparatus bar, 21 screw mandrels, 22 cards, 23 card inlet guide grooves, 24 guide protrusions, 25 back side panels, 26 motors, 27 chutes, 28 supports
Frame, 29 card imports, 30 breach.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Fig. 1-5, a kind of simple laminated dielectric transmitting mechanism, including the first card case 1 are referred to, the side of the first card case 1 is set
The second card case 2 is equipped with, the second unpacking 2 sides away from the first card case 1 are provided with the 3rd card case 3, and the first card case 1 blocks for longitudinal direction
Case, the second card case 2 and the 3rd card case 3 are horizontal card case, make card 22 more rapid in transmission, have effectively saved people
Time, the first card case 1, the second card case 2 and the 3rd card case 3 separated by dividing plate 4, the first card case 1, the second card case 2 and
The side of three card casees 3 is provided with front side board 5, and the bottom of front side board 5, which is provided with bottom plate 6, front side board 5, is provided with card outlet 7,
Side of the first card case 1 away from the second card case 2 is provided with support frame 28, support frame 28 be arranged on front side board 5 and back side panel 25 it
Between, first longitudinal direction doctor position inductor 8 is provided with support frame 28, first longitudinal direction doctor position inductor 8 can be with contactless card
The position of piece 22, accelerates transmission speed during transmission, first longitudinal direction doctor position inductor 8 away from front side board 5 one
Side is provided with the second longitudinal direction doctor position inductor 9 on support frame 28, first longitudinal direction doctor position inductor 8 and
Two longitudinal doctor position inductors 9 are symmetricly set on support frame 28, pass through the first longitudinal direction being symmetricly set on support frame 28
Doctor position inductor 8 and second longitudinal direction doctor position inductor 9, can make transmitting mechanism reaction more rapid, it is ensured that
The process of transmission it is quick and effective, side of the 3rd card case 3 away from the second card case 2 be provided with transverse card scraping delivery mechanism 10,
The top of transverse card scraping delivery mechanism 10 is provided with card slide plate 11, and transverse card scraping delivery mechanism 10 is arranged on front side board 5 with after
Between side plate 25, jagged 30 are opened up on back side panel 25, breach 30 is internally provided with longitudinal card scraping delivery mechanism 12, longitudinal direction card
The top of piece scraping delivery mechanism 12 is provided with longitudinal blade 17, and longitudinal card scraping delivery mechanism 12 includes motor 26, the output of motor 26
Axle is rotatably connected to screw mandrel 21 by shaft coupling, and the output shaft of motor 26 drives screw mandrel 21 to rotate by shaft coupling, the band of screw mandrel 21
Nutating gear 18 is rotated, and travelling gear 18 is more stablized when rotation, the one end of screw mandrel 21 away from motor 26 turns
Dynamic be connected with travelling gear 18, motor 26 is provided with the first scraper balancing pole 19 and the second scraper balancing pole 20, longitudinal card
Scraping delivery mechanism 12 is identical with the internal structure of transverse card scraping delivery mechanism 10, by the transverse card scraping delivery mechanism 10 of setting with indulging
To card scraping delivery mechanism 12 so that the transmitting mechanism, which only needs to two motors 26, can just reach existing simple laminated dielectric hair
Send the effect that mechanism is reached so that people's operation is more simple, reduce the cost of people, the first scraper balancing pole 19 and the
Two scraper balancing poles 20 are symmetricly set on motor 26, pass through the first scraper balancing pole 19 being symmetricly set on motor 26 and
Two scraper balancing poles 20, make the rotate gear 18 of the transmitting mechanism difficult for drop-off when rotating, more stablize during rotation,
Offer chute 27 in the inner bottom wall of first card case 1, the second card case 2 and the 3rd card case 3, chute 27 is internally provided with first
The horizontal doctor position sensor 15 of the horizontal horizontal doctor position sensor 14 and the 3rd of doctor position sensor 13, second, first
The horizontal doctor position sensor 15 of the horizontal horizontal doctor position sensor 14 and the 3rd of doctor position sensor 13, second is equidistant
The inside of chute 27 is arranged in, the first horizontal horizontal doctor position sensor 14 and the 3rd of doctor position sensor 13, second is horizontal
Horizontal scraper 16 is provided with to the top of doctor position sensor 15, the first horizontal doctor position sensor 13, second is laterally
The horizontal doctor position sensor 15 of doctor position sensor 14 and the 3rd can effectively experience the position of blade 22, work as blade
When 22 entrance card case, the transmitting mechanism is set fast and effectively to be transmitted, the first card case 1, the second card case 2 and the 3rd
The side of the bottom of card case 3 is provided with card import 29, and the bottom of the first card case 1, the second card case 2 and the 3rd card case 3 is respectively provided with
There are guide protrusions 24, guide protrusions 24 can effectively reduce the resistance during card case jack-up, the first card case 1, the second card case 2
Card inlet guide groove 23 is provided with card import 29 with the 3rd card case 3, passes through the card inlet guide groove 23 of setting
Card 22 is guided, can effectively reduce frictional force of the card 22 when card bottom portion is run, can be with significantly more efficient
Card 22 is protected, card inlet guide groove 23 is internally provided with card 22.
The electric elements occurred in this article are electrically connected with extraneous main controller and 220V civil powers, and main controller can be meter
Calculation machine etc. plays the conventionally known equipment of control.
When in use, according to programmed instruction, when sending the card 22 in the first card case 1, longitudinal scraper 17 is vertical from second
The card run to the position of doctor position sensor 9 in the position of first longitudinal direction doctor position sensor 8, the first card case 1
22 are sent from card outlet 7 therewith, when sending the card in the 3rd card case 3, and horizontal scraper is passed from the second horizontal doctor position
The position of sensor 14 card 22 that travelled forward immediately after backing at horizontal doctor position sensor 3 is scraped, when scraper is retreated
Card 22 will not be moved, during to the first card 1 bottom of case, the position of longitudinal scraper 17 from second longitudinal direction doctor position sensor 9 is opened
It is dynamic, card 22 is sent out from card outlet 7, when sending the card 22 in the second card case 2, horizontal scraper 16 is laterally scraped from second
The position of knife position sensor 14 is directly travelled forward, and the card 22 in the second card case 2 is scraped, and then longitudinal direction scraper 17 is this
Card 22 is sent out, when sending the card 22 in the second card case 2 or the 3rd card case 3, meeting when card 22 is scraped from the second card case 2
Upward some distances of jack-up of the 3rd card case 3 above, card 22 can be gone from the corresponding bottom of 3rd card case 3 is drill-through, for convenience of card
Piece 22 is the jack-up of the 3rd card case 3, and an inclined guiding is arranged at the bottom of the 3rd card case 3, to reduce card 22 in the bottom of the 3rd card case 3
Frictional force and protection card 22 during operation, each card bottom portion leaves guide protrusions 24, during reduction card case jack-up
Resistance, be provided with the inlet guide groove 23 of card 22 on dividing plate 4, card 22 be oriented to.
In summary, the simple laminated dielectric transmitting mechanism, by novel design, makes the letter of this card transmitting mechanism structure
Single, cost is low, and the function of needs is only achieved that with two drive mechanisms, one is provided for new many casing card issuing devices
Individual simple novel mentality of designing.
By the first scraper balancing pole 19 and the second scraper balancing pole 20 of setting, make the rotate gear 18 of the transmitting mechanism
It is difficult for drop-off when rotating, more stablize during rotation, pass through the horizontal scraper 16 and longitudinal scraper 17, Neng Gouyou of setting
Being transmitted to the card 22 in card case for effect, makes card 22 more quick when transmission, makes the operation of people more
Convenience, pass through the transverse card scraping delivery mechanism 10 of setting and longitudinal card scraping delivery mechanism 12 so that the transmitting mechanism is only needed to
Two motors 26 can just reach the effect that existing simple laminated dielectric transmitting mechanism is reached so that people operate more
Simply, the cost of people is reduced.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of simple laminated dielectric transmitting mechanism, including the first card case (1), it is characterised in that：The one of the first card case (1)
Side is provided with the second card case (2), and side of the second card case (2) away from the first card case (1) is provided with the 3rd card case (3), institute
State the first card case (1), the second card case (2) and the 3rd card case (3) to separate by dividing plate (4), the first card case (1), the second card
The side of case (2) and the 3rd card case (3) is provided with front side board (5), and the bottom of the front side board (5) is provided with bottom plate (6), described
Card outlet (7) is provided with front side board (5), side of the first card case (1) away from the second card case (2) is provided with support frame
(28), support frame as described above (28) is arranged between front side board (5) and back side panel (25), and support frame as described above is provided with first on (28)
Longitudinal doctor position inductor (8), side of the first longitudinal direction doctor position inductor (8) away from front side board (5) is provided with
The second longitudinal direction doctor position inductor (9) on support frame (28) is arranged on, the 3rd card case (3) is away from the second card case (2)
Side be provided with the top of transverse card scraping delivery mechanism (10), the transverse card scraping delivery mechanism (10) and be provided with card slide plate
(11), the transverse card scraping delivery mechanism (10) is arranged between front side board (5) and back side panel (25), on the back side panel (25)
Open up jagged (30), the breach (30) is internally provided with longitudinal card scraping delivery mechanism (12), longitudinal card scraping delivery
Longitudinal blade (17) is provided with the top of mechanism (12), longitudinal card scraping delivery mechanism (12) includes motor (26), the electricity
The output shaft of machine (26) is rotatably connected to screw mandrel (21) by shaft coupling, and the one end of the screw mandrel (21) away from motor (26) is rotated
It is connected with travelling gear (18), the motor (26) and is provided with the first scraper balancing pole (19) and the second scraper balancing pole
(20) chute (27), is offered in the inner bottom wall of the first card case (1), the second card case (2) and the 3rd card case (3), it is described
Chute (27) is internally provided with the first horizontal doctor position sensor (13), the second horizontal doctor position sensor (14) and the
Three horizontal doctor position sensors (15), the side of the first card case (1), the second card case (2) and the 3rd card case (3) bottom is equal
Card import (29) is provided with, the bottom of the first card case (1), the second card case (2) and the 3rd card case (3) is provided with guiding
Card is provided with raised (24), the card import (29) of the first card case (1), the second card case (2) and the 3rd card case (3)
Inlet guide groove (23), the card inlet guide groove (23) is internally provided with card (22).
2. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：Longitudinal card scraping delivery
Mechanism (12) is identical with the internal structure of transverse card scraping delivery mechanism (10).
3. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：The first scraper balance
Bar (19) is symmetricly set on motor (26) with the second scraper balancing pole (20).
4. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：Described first horizontal scraper
The top of position sensor (13), the second horizontal doctor position sensor (14) and the 3rd horizontal doctor position sensor (15) is equal
It is provided with horizontal scraper (16).
5. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：Described first horizontal scraper
Position sensor (13), the second horizontal doctor position sensor (14) and the 3rd horizontal doctor position sensor (15) equidistant row
It is listed in the inside of chute (27).
6. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：The first longitudinal direction scraper
Position sensor (8) and second longitudinal direction doctor position inductor (9) are symmetricly set on support frame (28).
7. a kind of simple laminated dielectric transmitting mechanism according to claim 1, it is characterised in that：The first card case (1)
For longitudinal card case, the second card case (2) and the 3rd card case (3) are horizontal card case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484066.3U CN206345251U (en) | 2016-12-30 | 2016-12-30 | A kind of simple laminated dielectric transmitting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484066.3U CN206345251U (en) | 2016-12-30 | 2016-12-30 | A kind of simple laminated dielectric transmitting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206345251U true CN206345251U (en) | 2017-07-21 |
Family
ID=59319385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621484066.3U Active CN206345251U (en) | 2016-12-30 | 2016-12-30 | A kind of simple laminated dielectric transmitting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206345251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722592A (en) * | 2020-12-18 | 2021-04-30 | 广州卓腾科技有限公司 | Control method of leather sheath dispensing device |
-
2016
- 2016-12-30 CN CN201621484066.3U patent/CN206345251U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112722592A (en) * | 2020-12-18 | 2021-04-30 | 广州卓腾科技有限公司 | Control method of leather sheath dispensing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106781011B (en) | Collect precious and umbrella of charging lease machine in an organic whole | |
| CN202795545U (en) | Bus changing system | |
| CN104574690B (en) | A kind of self-help drawing money machine structure | |
| CN207241217U (en) | A kind of accounting glue spreading apparatus | |
| CN207440936U (en) | Intelligent book sorter | |
| CN206345251U (en) | A kind of simple laminated dielectric transmitting mechanism | |
| CN206924875U (en) | A kind of Western medicine grinder | |
| CN103177408A (en) | Internet of things automat intelligent management system and method | |
| CN214846992U (en) | Sharing smart machine of books borrows by oneself | |
| CN103810791A (en) | Self-service food buying machine | |
| CN203084817U (en) | Bill storage device | |
| CN103489251A (en) | Multi-channel full automatic instant lottery ticket issuing transmission mechanism | |
| CN202058235U (en) | Game coin access integral machine capable of making changes | |
| CN203552341U (en) | Clearing and bundling integrated machine | |
| CN203930956U (en) | A kind of multiple ticket card follower of composing different value | |
| CN206147823U (en) | Lead paper money device | |
| CN204473284U (en) | A kind of bank note classification conveyor line | |
| CN202504682U (en) | Movement control device for pushing-out mechanism of note and certificate management cabinet | |
| CN207432347U (en) | A kind of soft board consecutive shear die | |
| CN203652150U (en) | Integrated machine for cash counting, detecting and bundling | |
| CN105989378A (en) | Automatic card issuing device | |
| CN204632005U (en) | This automatic recovery system of ticket of a kind of formula invoice Vending Machine | |
| CN202838017U (en) | Rolling mill experimental system for researching multiple motor motion control | |
| CN214998145U (en) | Miniature push bench control system | |
| CN203751415U (en) | Copper plate shearing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 325800 No. 188 Yongjin Road, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province Patentee after: Polytron Technologies Inc Address before: 325800 No. 188 Yongjin Road, Lingxi Town, Cangnan County, Zhejiang Province Patentee before: Zhejiang Wei Rong electronics technology limited company |