CN215818717U - Multilayer bending-resistant printed circuit board convenient to assemble - Google Patents

Multilayer bending-resistant printed circuit board convenient to assemble Download PDF

Info

Publication number
CN215818717U
CN215818717U CN202122267304.2U CN202122267304U CN215818717U CN 215818717 U CN215818717 U CN 215818717U CN 202122267304 U CN202122267304 U CN 202122267304U CN 215818717 U CN215818717 U CN 215818717U
Authority
CN
China
Prior art keywords
plate
connecting plate
lateral wall
sliding
trapezoidal
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
CN202122267304.2U
Other languages
Chinese (zh)
Inventor
孟超
曾子清
曾清华
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.)
Shanghai Jingshi Electronic Technology Co ltd
Original Assignee
Shanghai Jingshi Electronic 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 Shanghai Jingshi Electronic Technology Co ltd filed Critical Shanghai Jingshi Electronic Technology Co ltd
Priority to CN202122267304.2U priority Critical patent/CN215818717U/en
Application granted granted Critical
Publication of CN215818717U publication Critical patent/CN215818717U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Casings For Electric Apparatus (AREA)

Abstract

The application discloses resistant printed wiring board of buckling of multilayer convenient to equipment, including the circuit board body, first guard plate, second guard plate, threaded rod, I-shaped plugboard, first connecting plate, second connecting plate, slide bar, first connecting post, first trapezoidal plate, second trapezoidal plate, third connecting plate, first grafting post, second connecting post, first reset spring, fourth connecting plate, second reset spring, sliding plate, third trapezoidal plate, second grafting post and third reset spring. Through the setting of first spliced pole and second spliced pole, along with the propulsion of threaded rod, the slide bar atress drives first connecting plate and sliding plate and slides, under the effect of first connecting pole, first trapezoidal plate slides simultaneously with the second trapezoidal plate for first spliced pole and second spliced pole insert in the blind hole of I-shaped plugboard lateral wall, and then assemble two circuit board bodies comparatively swiftly convenient, and through the effect of first guard plate and second guard plate, promote the resistant ability of buckling of whole circuit board.

Description

Multilayer bending-resistant printed circuit board convenient to assemble
Technical Field
The application relates to the technical field of printed circuit boards, in particular to a multilayer bending-resistant printed circuit board convenient to assemble.
Background
A printed circuit board (also called as printed circuit board) is a provider for electric connection of electronic components, and is characterized by that it uses an insulating plate as base material, and is cut into a certain size, on which at least a conductive pattern is attached, and is equipped with holes for replacing the chassis of the electronic components of previous devices and realizing interconnection between electronic components, and its development has been over 100 years.
The existing printed circuit board is not provided with a certain protection plate, so that the whole printed circuit board is poor in bending resistance, and the existing printed circuit board is inconvenient to assemble. Therefore, a multilayer bending-resistant printed wiring board convenient to assemble is provided to solve the above problems.
Disclosure of Invention
The multilayer bending-resistant printed circuit board convenient to assemble is provided in the embodiment and is used for solving the problem that whether the size of a workpiece to be primarily cut is qualified or not can not be clearly known by a worker when the existing intelligent laser cutting machine operation cabinet shell is used.
According to one aspect of the application, a multi-layer bending-resistant printed circuit board convenient to assemble is provided, and the multi-layer bending-resistant printed circuit board comprises first protection plates and a fixing mechanism, wherein the two first protection plates are fixedly connected with a circuit board body;
the fixing mechanism comprises a first connecting plate, a second connecting plate, a sliding rod, a first connecting column, a first trapezoidal plate, a second trapezoidal plate, a third connecting plate, a first inserting column, a second connecting column, a first reset spring, a fourth connecting plate, a second reset spring, a sliding plate, a third trapezoidal plate, a second inserting column and a third reset spring, the first connecting plate is fixedly connected with the inner wall of a cavity inside the first protection plate, the first connecting plate slides and is connected with the sliding rod in a sliding mode, one end of the first connecting column is fixedly connected with the side wall of the second connecting plate, and the other end of the first connecting column is fixedly connected with the side wall of the first trapezoidal plate.
Furthermore, the side wall of the first connecting plate is fixedly connected with one end of the second connecting column, the other end of the second connecting column is fixedly connected with the side wall of the cavity of the first protection plate, the second connecting column is connected with the third connecting plate in a sliding mode, the side wall of the third connecting plate is fixedly connected with one end of the first inserting column, and the other end of the first inserting column extends into the sliding groove of the side wall of the first protection plate in a sliding mode.
Further, the spout sliding connection first trapezoidal plate's of first connecting plate lateral wall one end, the other end and the laminating of second trapezoidal plate lateral wall of first trapezoidal plate, second trapezoidal plate and third connecting plate fixed connection.
Furthermore, the outer wall of the second connecting column is sleeved with a first return spring, and two ends of the first return spring are respectively connected with the side walls of the first connecting plate and the third connecting plate in a hanging mode.
Further, one end of the sliding rod is fixedly connected with the second connecting plate, the side wall of the second connecting plate is attached to the side wall of the threaded rod, the other end of the sliding rod is fixedly connected with the side wall of the sliding plate, the side wall of the sliding plate is fixedly connected with the third trapezoidal plate, the side wall of the third trapezoidal plate is attached to the side wall of one end of the second plug-in column, the other end of the second plug-in column extends into the sliding groove of the side wall of the first protection plate, and part of the outer wall of the second plug-in column is sleeved with a third reset spring.
Furthermore, the part of the sliding rod, which is located in the cavities at two sides inside the first protection plate, is fixedly connected with the fourth connection plate, the outer wall part of the sliding rod is sleeved with a second return spring, and the second return spring is fixedly connected with the side wall of the fourth connection plate.
Through the above-mentioned embodiment of this application, adopted bunching mechanism, solved current intelligent laser cutting machine operation cabinet casing to the cable not have the problem of fine constraint, gained better practical effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present application;
FIG. 2 is a schematic view of an exemplary embodiment of an internal front cross-sectional structure of a first fender;
fig. 3 is a schematic perspective view of an exemplary embodiment of a jack panel.
In the figure: 1. a circuit board body; 2. a first guard plate; 3. a second guard plate; 4. a threaded rod; 5. an I-shaped plugboard; 6. a first connecting plate; 7. a second connecting plate; 8. a slide bar; 9. a first connecting column; 10. a first trapezoidal plate; 11. a second trapezoidal plate; 12. a third connecting plate; 13. a first plug-in column; 14. a second connecting column; 15. a first return spring; 16. a fourth connecting plate; 17. a second return spring; 18. a sliding plate; 19. a third trapezoidal plate; 20. a second plug column; 21. and a third return spring.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The fixing mechanism in this embodiment may be applied to various boards, for example, the following board is provided in this embodiment, and the fixing mechanism in this embodiment may be used to fix the following board.
The wood board comprises a body, wherein a connecting mechanism is arranged on the body. The connecting mechanism comprises connecting components arranged on two sides of the body, each connecting component comprises an inserting block integrally manufactured on the side wall of one side of the body, a through hole is formed in the body below the inserting block, and a second clamping block is integrally manufactured on the side wall of the through hole; a second clamping groove clamped with the inserting block on the adjacent body is formed in the side wall of the other side of the body, an adjusting block is integrally manufactured on the body below the second clamping groove, and a third clamping groove clamped with the second clamping block on the adjacent body is formed in the adjusting block; when the inserting block is clamped with the second clamping groove, and the second clamping block is clamped with the third clamping groove, the adjusting block is matched with the through hole, the body is matched with the adjacent body, one end of the body is fixedly connected with the adjusting rod, one end of the adjusting rod, which is far away from the body, is integrally provided with the connecting block, the cross section of the connecting block is trapezoidal, the cross section area of one end, which is far away from the adjusting rod, of the connecting block is larger than that of one end, which is close to the adjusting rod, of the connecting block, one end, which is far away from the adjusting rod, of the connecting block is fixedly connected with the connecting rod, one end, which is far away from the connecting block, of the connecting rod is fixedly connected with the first clamping block, the cross section area of the first clamping block is trapezoidal and has certain deformation capacity, and the cross section area of one end, which is far away from the connecting rod, of the first clamping block is smaller than that of one end, which is close to the connecting rod; a groove is formed in the body below the adjusting rod, a spring is fixedly connected to the bottom wall of the groove, and a positioning rod is fixedly connected to one end, away from the bottom wall of the groove, of the spring; the other end of the body is provided with a first sliding chute connected with the connecting block in a sliding manner, the side wall of the first sliding chute is provided with a first clamping groove clamped with the first clamping block, and the first clamping groove is communicated with the first sliding chute; set up the second spout that supplies the locating lever to slide and connect on the body of first spout below, set up the constant head tank with the locating lever joint on the lateral wall of second spout, and the degree of depth of constant head tank will be longer than the length of locating lever. When the first clamping block is clamped with the first clamping groove, the locking block is arranged between the connecting block and the first sliding groove, the cross section area of the locking block is U-shaped, the locking block is sleeved on the adjusting rod, the three end faces of the locking block can abut against the side wall of the first sliding groove, and the side wall close to the connecting block abuts against the connecting block.
Of course, the present embodiment can also be used for fixing wood boards with other structures. Here, a detailed description is omitted, and the fixing mechanism according to the embodiment of the present application is described below.
Referring to fig. 1-3, the multilayer bending-resistant printed circuit board convenient to assemble comprises first protection plates 2 and a fixing mechanism, wherein the two first protection plates 2 are fixedly connected with a circuit board body 1, sliding chutes are formed in the top and the bottom of each first protection plate 2, sliding chutes in the side walls of the first protection plates 2 are inserted into i-shaped insertion plates 5, the first protection plates 2 and second protection plates 3 are in threaded connection with threaded rods 4, and the side walls of the second protection plates 3 are attached to the side walls of the circuit board body 1;
the fixing mechanism comprises a first connecting plate 6, a second connecting plate 7, a sliding rod 8, a first connecting column 9, a first trapezoidal plate 10, a second trapezoidal plate 11, a third connecting plate 12, a first plug column 13, a second connecting column 14, a first reset spring 15, a fourth connecting plate 16, a second reset spring 17, a sliding plate 18, a third trapezoidal plate 19, a second plug column 20 and a third reset spring 21, wherein the first connecting plate 6 is fixedly connected with the inner wall of a cavity in the first protection plate 2, the first connecting plate 6 is slidably connected with the sliding rod 8 in the first protection plate 2, one end of the first connecting column 9 is fixedly connected with the side wall of the second connecting plate 7, the other end of the first connecting column 9 is fixedly connected with the side wall of the first trapezoidal plate 10, and therefore, under the action of the fixing mechanism, when the whole printed circuit board is assembled, a worker rotates the threaded rod 4, so that the first and second jack posts 13 and 20 are protruded to fix the h-shaped jack panel 5 between the two first shield panels 2, thereby completing the assembly of the two printed circuit boards.
The side wall of the first connecting plate 6 is fixedly connected with one end of a second connecting plate 14, the other end of the second connecting plate 14 is fixedly connected with the cavity side wall of the first protection plate 2, the second connecting plate 14 is connected with a third connecting plate 12 in a sliding manner, the side wall of the third connecting plate 12 is fixedly connected with one end of a first inserting column 13, the other end of the first inserting column 13 extends into a sliding groove of the side wall of the first protection plate 2 in a sliding manner, the sliding groove of the side wall of the first connecting plate 6 is connected with one end of a first trapezoidal plate 10 in a sliding manner, the other end of the first trapezoidal plate 10 is attached to the side wall of a second trapezoidal plate 11, the second trapezoidal plate 11 is fixedly connected with the third connecting plate 12, a first return spring 15 is sleeved on the outer wall of the second connecting plate 14, two ends of the first return spring 15 are respectively connected with the side walls of the first connecting plate 6 and the third connecting plate 12 in a hanging manner, one end of the sliding rod 8 is fixedly connected with the second connecting plate 7, the side wall of the second connecting plate 7 is attached to the side wall of the threaded rod 4, the other end of the sliding rod 8 is fixedly connected with the side wall of the sliding plate 18, the side wall of the sliding plate 18 is fixedly connected with the third trapezoidal plate 19, the side wall of the third trapezoidal plate 19 is attached to the side wall of one end of the second plug-in post 20, the other end of the second plug-in post 20 extends into the sliding groove of the side wall of the first protection plate 2, and the partial outer wall of the second plug-in post 20 is sleeved with the third reset spring 21, so that when a worker assembles the two circuit board bodies 1, the worker rotates the threaded rod 4 to enable the threaded rod 4 to drive the sliding rod 8 to slide, the first trapezoidal plate 10 and the third trapezoidal plate 19 slide in the same direction along with the sliding of the sliding rod 8, and then the first plug-in post 13 and the second plug-in post 20 are inserted into the blind hole of the side wall of the I-shaped plug-in plate 5, thereby completing the splicing of the two circuit board bodies 1, the part of the sliding rod 8, which is located in the cavities on the two sides inside the first protection plate 2, is fixedly connected with the fourth connection plate 16, the second reset spring 17 is sleeved on the outer wall part of the sliding rod 8, the second reset spring 17 is fixedly connected with the side wall of the fourth connection plate 16, and the sliding rod 8 drives the first trapezoidal plate 10 and the third trapezoidal plate 19 to reset under the action of the second reset spring 17 after a worker takes out the threaded rod 4, so that the first plug-in post 13 and the second plug-in post 20 are separated from the blind holes on the side wall of the I-shaped plug-in plate 5, and the two assembled circuit board bodies 1 are conveniently separated.
When the utility model is used, whether each device of the whole circuit board can normally work is firstly checked, when each device can be normally assembled, when two circuit board bodies 1 are assembled, the I-shaped plug board 5 is inserted between two attached first protection boards 2, then a worker tightly attaches the second protection board 3 to the side wall of the circuit board body 1, so that the second protection board 3 is communicated with the threaded hole of the side wall of the first protection board 2, and then the worker rotates the threaded rod 4 to enable the sliding rod 8 to drive the first connection board 6 and the sliding board 18 to slide along with the continuous entering of the threaded rod 4 into the cavity in the first protection board 2, so that the first trapezoidal board 10 and the second trapezoidal board 11 slide simultaneously under the action of the first connection column 9, the first plug column 13 and the second plug column 20 slide continuously under the stress, and the first plug column 13 and the second plug column 20 are inserted into the blind hole of the side wall of the I-shaped plug board 5, and then accomplish the equipment of two circuit board bodies 1, and through the effect of first guard plate 2 and second guard plate 3, promote the resistant ability of buckling of whole circuit board.
The application has the advantages that:
1. through the arrangement of the first plug column and the second plug column, the sliding rod is forced to drive the first connecting plate and the sliding plate to slide along with the pushing of the threaded rod, the first trapezoidal plate and the second trapezoidal plate slide simultaneously under the action of the first connecting column, so that the first plug column and the second plug column are inserted into the blind holes in the side wall of the I-shaped plug plate, the two circuit board bodies are assembled quickly and conveniently, and the bending resistance of the whole circuit board is improved through the action of the first protection plate and the second protection plate;
2. through the setting of second reset spring, the staff is taking out the threaded rod after, and the slide bar drives first trapezoidal plate and the reset of third trapezoidal plate for first plug column and second plug column break away from the blind hole of I-shaped plug plate lateral wall, and then dismantle comparatively swiftly with the circuit plate body of two equipment.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (6)

1. The utility model provides a resistant printed wiring board of buckling of multilayer convenient to equipment which characterized in that: the circuit board comprises first protection plates (2) and a fixing mechanism, wherein the two first protection plates (2) are fixedly connected with a circuit board body (1), sliding grooves are formed in the top and the bottom of each first protection plate (2), the sliding grooves in the side wall of each first protection plate (2) are inserted into I-shaped insertion plates (5), the first protection plates (2) and the second protection plates (3) are in threaded connection with threaded rods (4), and the side wall of each second protection plate (3) is attached to the side wall of the circuit board body (1);
the fixing mechanism comprises a first connecting plate (6), a second connecting plate (7), a sliding rod (8), a first connecting column (9), a first trapezoidal plate (10), a second trapezoidal plate (11), a third connecting plate (12), a first inserting column (13), a second connecting column (14), a first reset spring (15), a fourth connecting plate (16), a second reset spring (17), a sliding plate (18), a third trapezoidal plate (19), a second inserting column (20) and a third reset spring (21), the first connecting plate (6) is fixedly connected with the inner wall of the cavity in the first protection plate (2), the first connecting plate (6) is connected with the first protection plate (2) in a sliding way through a sliding rod (8), one end of the first connecting column (9) is fixedly connected with the side wall of the second connecting plate (7), the other end of the first connecting column (9) is fixedly connected with the side wall of the first trapezoidal plate (10).
2. A multilayer bend-resistant printed wiring board easy to assemble according to claim 1, wherein: the utility model discloses a protection device, including first spliced pole (6), second spliced pole (14), first spliced pole (6) lateral wall and the one end fixed connection of second spliced pole (14), the other end and first guard plate (2) cavity lateral wall fixed connection of second spliced pole (14), second spliced pole (14) sliding connection third connecting plate (12), the one end fixed connection of third connecting plate (12) lateral wall and first grafting post (13), the other end of first grafting post (13) slides and extends to in the spout of first guard plate (2) lateral wall.
3. A multilayer bend-resistant printed wiring board easy to assemble according to claim 1, wherein: the spout sliding connection of first connecting plate (6) lateral wall one end of first trapezoidal plate (10), the other end and the laminating of second trapezoidal plate (11) lateral wall of first trapezoidal plate (10), second trapezoidal plate (11) and third connecting plate (12) fixed connection.
4. A multilayer bend-resistant printed wiring board easy to assemble according to claim 1, wherein: the outer wall of the second connecting column (14) is sleeved with a first return spring (15), and two ends of the first return spring (15) are respectively connected with the side walls of the first connecting plate (6) and the third connecting plate (12) in a hanging mode.
5. A multilayer bend-resistant printed wiring board easy to assemble according to claim 1, wherein: the one end and the second connecting plate (7) fixed connection of slide bar (8), second connecting plate (7) lateral wall and threaded rod (4) lateral wall laminating, the other end and the sliding plate (18) lateral wall fixed connection of slide bar (8), sliding plate (18) lateral wall and third trapezoidal plate (19) fixed connection, the laminating of the one end lateral wall of third trapezoidal plate (19) lateral wall and second plug column (20), the other end of second plug column (20) extends to in the spout of first guard plate (2) lateral wall, third reset spring (21) are cup jointed to second plug column (20) part outer wall.
6. A multilayer bend-resistant printed wiring board easy to assemble according to claim 1, wherein: the sliding rod (8) is located the part and the fourth connecting plate (16) fixed connection of the inside both sides cavity of first guard plate (2), second reset spring (17) is cup jointed to sliding rod (8) outer wall part, second reset spring (17) and fourth connecting plate (16) lateral wall fixed connection.
CN202122267304.2U 2021-09-17 2021-09-17 Multilayer bending-resistant printed circuit board convenient to assemble Active CN215818717U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122267304.2U CN215818717U (en) 2021-09-17 2021-09-17 Multilayer bending-resistant printed circuit board convenient to assemble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122267304.2U CN215818717U (en) 2021-09-17 2021-09-17 Multilayer bending-resistant printed circuit board convenient to assemble

Publications (1)

Publication Number Publication Date
CN215818717U true CN215818717U (en) 2022-02-11

Family

ID=80164366

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122267304.2U Active CN215818717U (en) 2021-09-17 2021-09-17 Multilayer bending-resistant printed circuit board convenient to assemble

Country Status (1)

Country Link
CN (1) CN215818717U (en)

Similar Documents

Publication Publication Date Title
CN201887197U (en) Cable connector component
DE19753839C1 (en) For coaxial angle plug-type connection unit
CN201887274U (en) Cable connector component
CN101483285B (en) Electric connection block
CN201191661Y (en) Electric connector component
CN102025053A (en) Cable connector assembly
DE4314908A1 (en) Shielded modular adapter
EP1575344A1 (en) Control device
DE112011100335T5 (en) PCB edge connector
CN2596615Y (en) Module connector
DE102014216932A1 (en) Printed circuit board for mounting a bridging module and printed circuit board assembly
CN201130785Y (en) Electric Connector
CN215818717U (en) Multilayer bending-resistant printed circuit board convenient to assemble
CN2909567Y (en) Electric connector assembly
CN203733969U (en) Electric connector, electric connector system and electronic device with electric connector
CN2624422Y (en) Module connector
CN104640389B (en) Cable back board system with reinforcer
DE19861112C2 (en) Housing with a contact area
CN2406290Y (en) Electronic card
EP0130531B1 (en) Device for the connection of cables to the terminals of printed circuit boards
EP0774799B1 (en) Method for making flexible printed circuit boards, in particular for motor vehicles, and printed circuit board made thereby
CN216251211U (en) Multilayer circuit board with quick mosaic structure
JP3545605B2 (en) Printed wiring board storage structure
CN217563842U (en) High-density magnetic core embedded circuit board
CN220830561U (en) Multilayer overlapped rigid-flex board

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant