CN207150586U - Wireless same screen device and same screen system - Google Patents

Wireless same screen device and same screen system Download PDF

Info

Publication number
CN207150586U
CN207150586U CN201721120091.8U CN201721120091U CN207150586U CN 207150586 U CN207150586 U CN 207150586U CN 201721120091 U CN201721120091 U CN 201721120091U CN 207150586 U CN207150586 U CN 207150586U
Authority
CN
China
Prior art keywords
screen device
wireless
holding part
led lamp
lamp panel
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
Application number
CN201721120091.8U
Other languages
Chinese (zh)
Inventor
钟波
肖适
刘志明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Jimi Technology Co Ltd
Original Assignee
Chengdu XGIMI Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu XGIMI Technology Co Ltd filed Critical Chengdu XGIMI Technology Co Ltd
Priority to CN201721120091.8U priority Critical patent/CN207150586U/en
Application granted granted Critical
Publication of CN207150586U publication Critical patent/CN207150586U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model embodiment provides a kind of wireless same screen device and same screen system, is related to intelligent curtain controller technology field.This is wireless to include housing, data transmission interface with screen device and includes the first holding part, the second holding part and connecting portion with screen device body, the housing;The both ends of the connecting portion are connected with first holding part and the second holding part respectively, the data transmission interface is installed on first holding part, the inwall that second holding part is embedded at screen device body, the data transmission interface electrically connect with described with screen device body.The utility model can realize Display on the same screen by cleverly designing in the environment of without network signal or signal wire, and simple in construction, applied widely.

Description

Wireless same screen device and same screen system
Technical field
Intelligent curtain controller technology field is the utility model is related to, in particular to a kind of wireless with screen device and same Screen system.
Background technology
Traditional projecting apparatus needs to realize using connecting lines such as HDMI, VGA to be shown with screen computer, therefore in use Line is needed, causes to operate inconvenient and is unable to long-distance transmissions;And it is existing it is wireless with screen device be then necessarily dependent upon environment or Person extraneous wireless signal realizes Display on the same screen, and causing and degree of intelligence higher to requirements such as use environments low etc., problem goes out It is existing.
Utility model content
In view of this, the utility model provides a kind of wireless with screen device and same screen system, by wireless with screen device at this Integrated wireless communication module, the wireless Display on the same screen of various occasions can be applied to.
To achieve the above object, the utility model provides following technical scheme:
A kind of wireless with screen device, including housing, data transmission interface and same screen device body, it is accommodating that the housing includes first Portion, the second holding part and connecting portion, it is described to be integrated with wireless communication module with screen device body interior;
The both ends of the connecting portion are connected with first holding part and the second holding part respectively, the data transmission interface First holding part, the inwall that second holding part is embedded at screen device body are installed on, the data transfer connects Mouth electrically connects with described with screen device body.
It is described to include transmission element, LED lamp panel and PCB with screen device body in the utility model embodiment preferably selects Plate, button is provided with the pcb board;
The transmission element is arranged at the LED lamp panel, and the pcb board is arranged at the LED lamp panel away from the transmission element Side, and the button is between the pcb board and the LED lamp panel.
In the utility model embodiment preferably selects, the LED lamp panel includes at least one LED.
It is described also to include reflective membrane, the reflective membrane with screen device body in the utility model embodiment preferably selects On offer at least one loophole matched with the LED, the reflective membrane is arranged at the transmission element close to the LED The side of lamp plate.
In the utility model embodiment preferably selects, the LED lamp panel is provided with close to the opening position of the button Bolster.
In the utility model embodiment preferably selects, second holding part includes bottom wall, and the bottom wall is arranged at Side of the pcb board away from the LED lamp panel.
In the utility model embodiment preferably selects, the bottom wall is made of Heat Conduction Material.
In the utility model embodiment preferably selects, side of the bottom wall away from the pcb board is provided with one Or multiple anti-slip parts.
In the utility model embodiment preferably selects, the data transmission interface is USB interface.
A kind of same screen system, including terminal device and above-mentioned wireless with screen device, the terminal device with it is described wireless same Shield device communication connection.
Compared with prior art, it is provided by the utility model wireless with screen device and same screen system, by wireless with screen at this Integrated wireless communication module and data transmission interface in device, it itself can generate wireless signal and be carried out automatically with screen with display end It has been shown that, independent of external environment, solve needs connecting line or dependent on the wireless communication in external environment in the prior art Number Display on the same screen mode limitation, and this is wireless simple in construction with screen device, applied widely.
In addition, using the design method of button printing nonopaque one in the present embodiment simultaneously, it is possible to increase the convenience of operation, enter One-step optimization equipment appearance, improve user experience.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the wireless structural representation with screen device that the utility model embodiment provides.
Fig. 2 is wireless another structural representation with screen device shown in Fig. 1
Fig. 3 is the structural representation of the housing shown in Fig. 1.
Fig. 4 is the wireless configuration schematic diagram with screen device shown in Fig. 1.
Fig. 5 is the configuration schematic diagram under wireless another visual angle with screen device shown in Fig. 4.
Icon:10- is wirelessly the same as screen device;20- data transmission interfaces;30- housings;The holding parts of 31- first;32- connecting portions; The holding parts of 33- second;34- bottom walls;35- anti-slip parts;40- is the same as screen device body;41- transmission elements;42-LED lamp plates;420-LED lamps; 421- reflective membranes;422- loopholes;43-PCB plates;44- buttons;45- bolsters.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is part of the embodiment of the present utility model, rather than whole embodiments.Generally retouched here in accompanying drawing The component of the utility model embodiment stated and shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.Of the present utility model In description, term " first, second, third, fourth etc. is only used for distinguishing description, and it is not intended that being or implying relatively heavy The property wanted.
In description of the present utility model, unless otherwise clearly defined and limited, term " setting ", " connected ", " company Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected;It can be machine Tool connects or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, can be two members Connection inside part.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality with concrete condition Concrete meaning in type.
Fig. 1 and Fig. 2 are please referred to, the utility model provides a kind of wireless with screen device 10, including housing 30, data transfer Interface 20 and same screen device body 40, the housing 30 includes the first holding part 31, the second holding part 33 and connecting portion 32, described same Screen device body 40 has been internally integrated wireless communication module.
Wherein, the both ends of the connecting portion 32 are connected with the holding part 33 of the first holding part 31 and second respectively, described Data transmission interface 20 is installed on first holding part 31, described to be embedded at second holding part 33 with screen device body 40 Inwall, the data transmission interface 20 electrically connect with described with screen device body 40.Wherein, the wireless communication module can itself Wireless signal is generated, to solve of the prior art to rely on wireless signal in external environment with screen device and carry out Display on the same screen Problem so that it is wireless not limited with screen device 10 by use environment, while it is wireless with the intelligent of screen device 10 to improve this.Alternatively, The wireless communication module may be, but not limited to, wireless WIFI module, focus sharing module etc..
In practical application, it is described it is wireless with screen device 10 by being arranged at the data transmission interface 20 of first holding part 31 It is connected with terminal device to realize data transfer, then the same screen device body 40 by being embedded in second holding part 33 again In wireless communication module realize the automatic with screen of projected picture.
In addition, the wireless data transmission interface 20 be used to needing the picture transmission that projects to this it is wireless with screen device 10 simultaneously Realize that therefore, the particular type of the wireless data transmission interface 20 can carry out flexible design according to actual conditions automatically with screen, For example, in this city embodiment, the wireless data transmission interface 20 can be, but be not limited to USB interface, RJ45 interfaces etc..
According to the actual requirements, referring to Fig. 3, the connecting portion 32 in the housing 30 can use hollow structure, for holding Receive and connect the data transmission interface 20 and the connecting line with screen device body 40, it should be appreciated that the connecting line can also pass through It is arranged at the outer surface of the connecting portion 32 or is embedded in the connecting portion 32 etc., the present embodiment does not do specific limit to this System.
Alternatively, because second holding part 33 is used to carry the same screen device body 40, therefore, hold described second Putting the concrete structures such as size, the shape in portion 33 can not be limited herein.For example, in the present embodiment, second holding part 33 It can wait as shown in Figure 3.
In addition, when actually implementing, first holding part 31, the second holding part 33 and connecting portion 32 can be integrally formed, Also the connection between three can be realized by way of clamping.Enter a ground, the material of the housing 30 also can be according to actual conditions Selected, for example, in the present embodiment, the inside casing of the housing 30 uses ebonite fixed structure, and in the ebonite fixed knot The outer position of structure coats one layer of flexible glue material, to improve the wireless overall texture with screen device 10.It should be noted that according to actual need Ask, the first holding part 31, the second holding part 33 and connecting portion 32 in the housing 30 can be made of identical material, also may be used It is different.
Further, referring to Fig. 4, described include transmission element 41, LED lamp panel 42 and pcb board 43, institute with screen device body 40 State and button 44 is provided with pcb board 43, wherein, the transmission element 41 is arranged at the LED lamp panel 42, and the pcb board 43 is set In side of the LED lamp panel 42 away from the transmission element 41, and the button 44 is located at the pcb board 43 and the LED Between plate 42.
Specifically, the transmission element 41 can be used for observing the wireless working condition with screen device 10, in addition, in this implementation In example, the transmission element 41 can use flexible material to prepare, so as to cause the transmission element 41 to the transmission element 41 application external force Certain deformation occurs, and then completes the pressing of button 44 being pointed on the pcb board 43, realizes to described wireless with screen device 10 are turned on and off.
Alternatively, in actual applications, the patterns such as LOGO can be also set on the transmission element 41, so that dark Under environment, also corresponding content disposed thereon can be watched by the transmission element 41.
Further, the LED lamp panel 42 is described wireless with the screen offer light of device 10, therefore, the LED lamp panel 42 Concrete form the present embodiment is not limited, for example, can be a single LED lamp panel 42, also can be by multiple LEDs 420 Form, for example, in the present embodiment, the LED lamp panel 42 can be made up of 4 LEDs 420, and specifically, the present embodiment is herein Repeat no more.
According to the actual requirements, described also to include reflective membrane 421 with screen device body 40, the reflective membrane 421 is arranged at described Transmission element 41 is close to the side of the LED lamp panel 42.Wherein, the reflective membrane 421, which can effectively improve, is incident to the printing opacity The uniformity of the light of part 41.During actual implementation, it can be offered and the quantity Matching of the LED 420 on the reflective membrane 421 Loophole 422, loophole 422 enters the transmission element 41 described in the light-transmissive distributed in the LED 420, and then both The uniformity of transmitted ray is can guarantee that, and can ensures its brightness.
Further, master control unit of the pcb board 43 as the wireless same screen device 10, wherein, on the pcb board 43 It is laid with key circuit, main control chip, wireless communication module etc..During actual implementation, the button 44 connects with the key circuit Connect, and the button 44 can use mechanical key 44, with by applying external force to the transmission element 41 to press the button 44 indirectly. Wherein, the concrete function of the button 44 can be defined flexibly according to the actual requirements, and the present embodiment is not limited herein, example Such as, the button 44 can be as described wireless with the switch of screen device 10 or picture switching switch etc..
Alternatively, due to by the transmission element 41 indirectly into the course of exerting pressure of the button 44, the LED lamp panel 42 directly contact with the button 44, easily occur that button 44 wears the LED lamp panel 42 and the sound of button 44 is big etc. asks Topic, therefore, referring to Fig. 5, in the present embodiment, can be provided with the LED lamp panel 42 close to the opening position of the button 44 Bolster 45, make it that the bolster 45 directly contacts with the button 44 when applying external force to the transmission element 41, from And avoid the button 44 from causing to damage to the LED lamp panel 42, and the sound of button 44 can be reduced to a certain extent, improve Consumer's Experience.
Wherein, the bolster 45 can be with, but is not limited to be made of elastomeric material, for example, silica gel material etc..And in reality When border is implemented, the bolster 45 can be by, but is not limited to paste or the mode of buckle is arranged at the LED lamp panel 42.Except this Outside, the structure of the bolster 45, shape etc. are not particularly limited herein.
It should be noted that during actual implementation, also buffering can be set in the opening position that the button 44 contacts with the LED lamp panel 42 The modes such as material layer are to reach the effect above, and specifically, the present embodiment will not be repeated here.
Further, second holding part 33 includes bottom wall 34, and the bottom wall 34 is arranged at the pcb board 43 away from institute The side of LED lamp panel 42 is stated, can effectively be protected described with screen device body 40.
According to the actual requirements, during the wireless use with screen device 10, the pcb board 43 can produce certain heat Amount,, may if the heat accumulated in the wireless device 10 with screen can not scatter in time especially after a period of time is used continuously The problems such as causing the former device failure such as circuit board, deformation occurs.Therefore, in the present embodiment, the bottom wall 34 uses Heat Conduction Material It is made, so as to accelerate radiating rate.Wherein, the bottom wall 34 can contact with the pcb board 43, so as to accelerate heat transfer to realize Quick heat radiating.
Alternatively, the Heat Conduction Material can be but be not limited to metal material etc., in the present embodiment, in order to effectively take into account The radiating rate of the bottom wall 34 and wireless weight, the texture with screen device 10, the bottom wall 34 are formed from aluminium to adopt.
In addition, in order to further improve radiating rate, heat emission hole can be also offered on the bottom wall 34, wherein, it is described to dissipate The concrete structure of hot hole and the bottom wall 34, shape etc. can flexibly be set according to the actual conditions of second holding part 33 Meter, the present embodiment are not particularly limited herein.
Further, the housing 30 is provided with one or more with side of the bottom wall 34 away from the pcb board 43 Anti-slip part 35.Wherein, the anti-slip part 35 can be that directly type etches to be formed on the bottom wall 34, also can be anti-by pasting The mode of sliding material layer realizes that specifically, the present embodiment will not be repeated here.
Alternatively, referring to Fig. 2, in the present embodiment, the anti-slip part 35 is made up of silica gel material, respectively in institute The both sides for stating bottom wall 34 are provided with the layer of silica gel of two crescent shapes.It should be understood that the concrete shape of the anti-slip part 35, material, big Small and quantity can carry out flexible design according to actual conditions.The present embodiment is not particularly limited herein.
Based on the description to above-mentioned wireless same screen device 10, the present embodiment also provides a kind of same screen system, including terminal device The wireless of sum communicates to connect with screen device 10, the terminal device with the wireless same screen device 10.
Wherein, the terminal device may be, but not limited to, the electric terminals such as computer, projecting apparatus, mobile phone, TV, both may be used So that as source, Display on the same screen end can be used as again.For example, the wireless same screen device 10 can pass through the data transmission interface The data messages such as the audio frequency and video in the terminal device are carried out Display on the same screen by 20;
And for example, again can be by being connected with the wireless communication module in screen device body 40 with the terminal device, Jin Ershi Now automatic same screen is simultaneously carried out the data messages such as the audio frequency and video obtained by no data coffret 20 by the terminal device Display.
In summary, it is provided by the utility model wireless with screen device 10 and same screen system, by wireless with screen device 10 at this Middle integrated wireless communication module and data transmission interface 20, it itself can generate wireless signal and be carried out automatically with screen with display end It has been shown that, independent of external environment, solve needs connecting line or dependent on the wireless communication in external environment in the prior art Number progress Display on the same screen limitation, and this is wireless simple in construction with screen device 10, applied widely.
In addition, using the design method of button printing nonopaque one in the present embodiment, the convenience of operation can be effectively improved, together When further optimize equipment appearance, improve user experience.
Obviously, those skilled in the art should be understood that the function of above-mentioned the utility model embodiment can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the existing program code or algorithm that computing device can perform, it is thus possible to It is stored in storage device by computing device to perform, or they is fabricated to each integrated circuit modules respectively, Or the multiple modules or step in them are fabricated to single integrated circuit module to realize.So, work(of the present utility model It can realize that being not restricted to any specific hardware and software combines.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

  1. It is 1. a kind of wireless with screen device, it is characterised in that including housing, data transmission interface and with screen device body, the housing bag The first holding part, the second holding part and connecting portion are included, it is described to be integrated with wireless communication module with screen device body interior;
    The both ends of the connecting portion are connected with first holding part and the second holding part respectively, the data transmission interface installation In first holding part, the inwall that second holding part is embedded at screen device body, the data transmission interface with It is described to be electrically connected with screen device body.
  2. It is 2. according to claim 1 wireless with screen device, it is characterised in that described to include transmission element, LED with screen device body Plate and pcb board, button is provided with the pcb board;
    The transmission element is arranged at the LED lamp panel, and the pcb board is arranged at one of the LED lamp panel away from the transmission element Side, and the button is between the pcb board and the LED lamp panel.
  3. It is 3. according to claim 2 wireless with screen device, it is characterised in that the LED lamp panel includes at least one LED.
  4. It is 4. according to claim 3 wireless with screen device, it is characterised in that described also to include reflective membrane, institute with screen device body State and at least one loophole matched with the LED is offered on reflective membrane, the reflective membrane is arranged at the transmission element and leaned on The side of the nearly LED lamp panel.
  5. It is 5. according to claim 2 wireless with screen device, it is characterised in that the LED lamp panel is close to the position of the button Place is provided with bolster.
  6. It is 6. according to claim 2 wireless with screen device, it is characterised in that second holding part includes bottom wall, the bottom Wall is arranged at side of the pcb board away from the LED lamp panel.
  7. It is 7. according to claim 6 wireless with screen device, it is characterised in that the bottom wall is made of Heat Conduction Material.
  8. It is 8. according to claim 6 wireless with screen device, it is characterised in that side of the bottom wall away from the pcb board is set It is equipped with one or more anti-slip parts.
  9. It is 9. according to claim 1 wireless with screen device, it is characterised in that the data transmission interface is USB interface.
  10. 10. a kind of same screen system, it is characterised in that including the nothing any one of terminal device and the claims 1-9 Line is with device is shielded, and the terminal device is with described wirelessly with screen device communication connection.
CN201721120091.8U 2017-09-01 2017-09-01 Wireless same screen device and same screen system Active CN207150586U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721120091.8U CN207150586U (en) 2017-09-01 2017-09-01 Wireless same screen device and same screen system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721120091.8U CN207150586U (en) 2017-09-01 2017-09-01 Wireless same screen device and same screen system

Publications (1)

Publication Number Publication Date
CN207150586U true CN207150586U (en) 2018-03-27

Family

ID=61677134

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721120091.8U Active CN207150586U (en) 2017-09-01 2017-09-01 Wireless same screen device and same screen system

Country Status (1)

Country Link
CN (1) CN207150586U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113746467A (en) * 2021-08-31 2021-12-03 杭州海康威视数字技术股份有限公司 Screen projection control method, screen projector and processing chip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113746467A (en) * 2021-08-31 2021-12-03 杭州海康威视数字技术股份有限公司 Screen projection control method, screen projector and processing chip

Similar Documents

Publication Publication Date Title
CN106034168A (en) Mobile equipment with detachable screen
CN204190856U (en) A kind of mobile phone wireless synchronous transmission projector
CN104679148A (en) Portable display control terminal equipment based on MHL (mobile high-definition link) technology
CN207150586U (en) Wireless same screen device and same screen system
WO2018019306A1 (en) Head-mounted display device and head-mounted display power supply system
WO2020051930A1 (en) Light-emitting device applicable to keyboard of notebook computer and use method therefor
CN208521269U (en) A kind of interactive intelligent tablet computer
CN109684241B (en) Terminal and terminal equipment
CN213423936U (en) Multi-interface docking station
CN212623675U (en) Intelligent household wireless control switch
CN210155656U (en) Interactive flat plate with Type-C interface and interactive flat plate system
CN207571830U (en) A kind of high in the clouds intelligent charge base for supporting meal ordering system
CN209913088U (en) Connector, mobile terminal and audio equipment
CN208797308U (en) A kind of Multifunctional socket panel
CN207303467U (en) A kind of intelligent socket
CN208506722U (en) A kind of learning-oriented touch panel of POE power supply
CN206377502U (en) A kind of novel flash lamp and a kind of mobile terminal
CN214478338U (en) All-in-one type-c screen projection adapter plate
CN210074352U (en) Connector, mobile terminal and audio equipment
CN202583941U (en) Computer, TV and telephone all-in-one machine
CN209913193U (en) Connector, mobile terminal and audio equipment
CN214412954U (en) Bluetooth sound box assembly
CN216249209U (en) Wireless screen projection device
CN219892557U (en) Digital display type docking station
CN107948832A (en) A kind of Portable multifunctional sound device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: It is wireless with shielding ware and with screen system

Effective date of registration: 20181109

Granted publication date: 20180327

Pledgee: Pudong Development Silicon Valley Bank Co., Ltd. Beijing branch

Pledgor: CHENGDU XGIMI TECHNOLOGY CO., LTD.

Registration number: 2018990001052

PE01 Entry into force of the registration of the contract for pledge of patent right
CP03 Change of name, title or address

Address after: 610094 Tianfu Software Park Area A, 1129 Century City Road, Chengdu High-tech Zone, Sichuan Province

Patentee after: Chengdu Jimi Technology Co., Ltd.

Address before: No. 1129 Tianfu Software Park A District Century City high tech Zone of Chengdu City, Sichuan Province Road 610000 7 5 storey building No. 501

Patentee before: CHENGDU XGIMI TECHNOLOGY CO., LTD.

CP03 Change of name, title or address
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200616

Granted publication date: 20180327

Pledgee: Pudong Development Silicon Valley Bank Co.,Ltd. Beijing branch

Pledgor: CHENGDU XGIMI TECHNOLOGY Co.,Ltd.

Registration number: 2018990001052

PC01 Cancellation of the registration of the contract for pledge of patent right