CN113147220A - Drawing hanging device and drawing hanging method for industrial design - Google Patents

Drawing hanging device and drawing hanging method for industrial design Download PDF

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Publication number
CN113147220A
CN113147220A CN202110457172.1A CN202110457172A CN113147220A CN 113147220 A CN113147220 A CN 113147220A CN 202110457172 A CN202110457172 A CN 202110457172A CN 113147220 A CN113147220 A CN 113147220A
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China
Prior art keywords
hanging
plate
rod
box
industrial design
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Pending
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CN202110457172.1A
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Chinese (zh)
Inventor
林涛
叶晓
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Zhejiang Shuren University
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Zhejiang Shuren University
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Publication date
Application filed by Zhejiang Shuren University filed Critical Zhejiang Shuren University
Priority to CN202110457172.1A priority Critical patent/CN113147220A/en
Publication of CN113147220A publication Critical patent/CN113147220A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42FSHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
    • B42F15/00Suspended filing appliances
    • B42F15/06Suspended filing appliances for hanging large drawings or the like

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  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)

Abstract

The invention relates to the technical field of industrial design, in particular to a drawing hanging device and a drawing hanging method for industrial design. According to the invention, after the movable rod rotates, the pulling rod pushes the adjusting box, the adjusting box can drive the picture-inserting rods to move, the distance between the picture-inserting rods can be changed, the hanging of the picture papers with different thicknesses is facilitated, and the operation is convenient.

Description

Drawing hanging device and drawing hanging method for industrial design
Technical Field
The invention relates to the technical field of industrial design, in particular to a drawing hanging device and a drawing hanging method for industrial design.
Background
Industrial design refers to the creative activity of planning and designing products produced by industrial means to make them optimally matched with users, and industrial design refers to the design of industrial products based on engineering, aesthetics and economics, and during the industrial design process or the industrial design teaching process, the design drawing is often required to be hung to facilitate the storage or taking of the drawing.
Chinese patent No. CN201922324178.2 provides an industrial design drawing hanger, including hanger base, link plate, sliding seat and fixing device, be equipped with two installation cavities and two sliding trays in the hanger base, and the sliding tray is located the oblique top of installation cavity, and link plate sliding fit is in the sliding tray, and the positive upside of link plate is equipped with the slide rail groove, and sliding fit has the slider in the slide rail groove, and two sliding seats all include diaphragm and riser, and the diaphragm welding is on the slider.
Drawing for industrial design is after the drawing operation, and the drawing is inconvenient to be deposited or take out to drawing of different thickness and kind is difficult to hang in same device, and the drawing is inconvenient to hang after the expansion, looks over after taking out the drawing from linkage comparatively troublesome, is unfavorable for extensive popularization and popularization. Therefore, it is desirable to provide a drawing hanging device and a drawing hanging method for industrial design to solve the above problems.
Disclosure of Invention
The invention aims to provide a drawing hanging device and a drawing hanging method for industrial design, and aims to solve the problems that drawings proposed in the background art are inconvenient to store or take out, drawings with different thicknesses and types are difficult to hang, the drawings are inconvenient to hang after being unfolded, and the drawings are troublesome to look over.
The technical scheme of the invention is as follows: a drawing hanging device for industrial design comprises a hanging frame, wherein a hanging box is welded on the outer wall of one side of the hanging frame, first motors are mounted on two sides of the bottom of the hanging box through bolts, movable rods are fixedly mounted at the end portions of the first motors, pull rods are movably connected at two ends of each movable rod, a plurality of stabilizing rods are welded inside the hanging box, an adjusting box is movably sleeved between every two adjacent stabilizing rods, a side plate is welded on one side of the adjusting box, one end of each pull rod is movably connected to one side of the corresponding side plate, an inserting drawing rod is welded at the top of the adjusting box, an outer plate is welded on one side of the outer wall of each inserting drawing rod, a hanging plate is mounted on the outer wall of one side of the hanging frame through bolts, electric push rods are mounted on two sides of the inner part of the hanging plate through bolts, connecting plates are welded on two sides of the inner part of the hanging plate, one side welding of connecting plate has the spring, the one end fixed mounting of spring has the push plate.
Furthermore, a drawing hanging plate is installed on one side of the pushing plate through a bolt, two sides of the bottom of the drawing hanging plate are connected with retaining rings through connecting ropes, and a hanging storage box is fixedly installed at the bottom of the retaining rings.
Furthermore, the end part of the electric push rod penetrates through the connecting plate, the picture hanging plate is connected inside the hanging plate in a sliding mode, and grooves are formed in the two sides of the top of the hanging box.
Further, the sliding tray has all been seted up to the both sides of recess inner wall, the both sides sliding connection of regulating box is in the inside of sliding tray, one side fixed mounting of mounted frame has the link plate.
Further, one side fixed mounting of link plate has a plurality of magnet, the spacing groove has been seted up to one side of link plate inner wall, the second motor is installed through the bolt in one side of link plate outer wall, the tip welding of second motor has the rotation piece.
Furthermore, one end of the rotating piece is movably connected with a short rod, one side of the inner part of the limiting groove is inserted with an unfolding plate in a sliding mode, and one side of the unfolding plate is movably connected with a connecting column.
Furthermore, the end parts of the connecting column and the short rod are provided with sleeves, a dragging rod is inserted between the two sleeves, and one side of the unfolding plate is in threaded connection with a threaded rod.
Furthermore, the welding of one side of link plate inner wall has the mounting panel, and there is the cover drawing pole at the top of mounting panel through bearing swing joint, there is the exhibition board one side of mounted frame through pivot swing joint, the welding of one side of exhibition board has the cardboard.
A drawing hanging method for industrial design comprises the following steps:
s1, hanging and storing: the electric push rod pushes the push plate, after the push plate drives the drawing hanging plate to move, a person puts the drawing ring into the hanging storage box, so that the drawing is hung below the hanging plate;
s2, moving and hanging: after the movable rod is moved by the first motor, the adjusting box is pulled by pulling the movable rod, the adjusting box can be moved outside the stable rod, the distance between the inserting drawing rods can be changed, and the drawing paper is suspended after moving;
s3, flattening and hanging: the drawing paper sleeve is established outside the cover drawing pole, and the second motor makes and rotates the piece activity, drags the pole pulling spliced pole to make the flat board activity of exhibition, and the drawing can stretch to the exhibition after the expansion in the flat board, and the drawing expandes the fixed suspension of back.
Further, in the step S1, the picture hanging plate is pulled by the spring in the hanging plate, and in the step S3, after the flattening plate is pushed by the connecting column, the flattening plate slides in the limiting groove.
The invention provides a drawing hanging device and a drawing hanging method for industrial design through improvement, and compared with the prior art, the drawing hanging device has the following improvements and advantages:
(1) through the picture inserting rod and the adjusting box which are arranged, the movable rod drives the pulling rod to push the adjusting box after rotating, the adjusting box can drive the picture inserting rod to move, the distance between the picture inserting rods can be changed, hanging of picture paper with different thicknesses is facilitated, and operation is convenient.
(2) Through the hanging plate and the hanging drawing board which are arranged, the electric push rod inside the hanging plate can push the pushing plate and the hanging drawing board, so that the hanging frame is pushed out by the hanging storage box, the drawing paper inside the hanging storage box can be taken out conveniently, and convenience is brought to designers.
(3) Through the exhibition flat board that sets up and rotation piece, the drawing paper on the cover drawing pole expandes the back, and the exhibition flat board receives the spliced pole and drags the pulling of moving the pole, and the drawing paper that the exhibition flat board can satisfy the expansion hangs, and threaded rod and magnet closely laminate simultaneously improve the stability of drawing paper.
(4) Through the exhibition board and the cardboard that set up, after promoting the exhibition board, the angle of exhibition board can incline to make the state of exhibition board processing slope, be convenient for looking over of industrial design drawing, the cardboard has prevented dropping of drawing, and the security obtains improving.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the hanging box of the present invention;
FIG. 3 is a schematic partial top view of the present invention;
FIG. 4 is a schematic view of the hanger plate and the tote box configuration of the present invention;
FIG. 5 is a schematic front view of the hanging plate of the present invention;
fig. 6 is a partial structural schematic diagram of the present invention.
Description of reference numerals:
1 hanger, 2 hanger plates, 3 hanger boxes, 4 electric push rods, 5 connecting plates, 6 springs, 7 pushing plates, 8 drawing boards, 9 hanger boxes, 10 retaining rings, 11 first motors, 12 stabilizing rods, 13 adjusting boxes, 14 outer plates, 15 inserting drawing rods, 16 grooves, 17 sliding grooves, 18 movable rods, 19 pulling rods, 20 side plates, 21 hanging plates, 22 limiting grooves, 23 rotating pieces, 24 pulling rods, 25 sleeves, 26 connecting columns, 27 unfolding plates, 28 threaded rods, 29 sleeving drawing rods, 30 mounting plates, 31 second motors, 32 unfolding boards, 33 retaining plates, 34 short rods and 35 magnets.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a drawing hanging device for industrial design through improvement, as shown in figures 1-6, comprising a hanging frame 1, wherein a hanging box 3 is welded on the outer wall of one side of the hanging frame 1, a first motor 11 is installed on two sides of the bottom of the hanging box 3 through bolts, a movable rod 18 is fixedly installed at the end part of the first motor 11, an output shaft of the first motor 11 drives the movable rod 18 to rotate, both ends of the movable rod 18 are movably connected with pulling rods 19, the pulling rods 19 are pulled by the movable rods 18, a plurality of stabilizing rods 12 are welded in the hanging box 3, an adjusting box 13 is movably sleeved between two adjacent stabilizing rods 12, the adjusting box 13 moves outside the stabilizing rods 12, a side plate 20 is welded on one side of the adjusting box 13, one end of the pulling rod 19 is movably connected to one side of the side plate 20, the pulling rod 19 pulls the side plate 20 and the adjusting box 13, a drawing inserting rod 15 is welded on the top of the adjusting box 13, insert drawing pole 15 on regulating box 13 movably, and the welding of one side of inserting drawing pole 15 outer wall has planking 14, planking 14 prevents the landing of drawing, the outer wall of mounted frame 1 one side is installed through the bolt and is hung board 2, electric putter 4 is all installed through the bolt in the inside both sides of hanging board 2, connecting plate 5 has all been welded in the inside both sides of hanging board 2, the welding of one side of connecting plate 5 has spring 6, the one end fixed mounting of spring 6 has thrust plate 7, electric putter 4's output shaft can promote thrust plate 7, electric putter 4's output shaft pushes back, spring 6 drives thrust plate 7 and pushes back the normal position.
Furthermore, a drawing board 8 is installed on one side of the moving plate 7 through a bolt, the drawing board 8 is moved by the moving plate 7, two sides of the bottom of the drawing board 8 are connected with buckles 10 through connecting ropes, a hanging storage box 9 is fixedly installed at the bottom of the buckles 10, and the buckles 10 draw the hanging storage box 9.
Further, the end of the electric push rod 4 penetrates through the connecting plate 5, the drawing hanging plate 8 is slidably connected inside the hanging plate 2, the drawing hanging plate 8 moves inside the hanging plate 2, and grooves 16 are formed in two sides of the top of the hanging box 3.
Further, sliding tray 17 has all been seted up to the both sides of recess 16 inner wall, and regulating box 13 moves about in sliding tray 17, and sliding tray 17 carries on spacingly to regulating box 13, and the both sides sliding connection of regulating box 13 is in sliding tray 17's inside, and one side fixed mounting of mounted frame 1 has link plate 21.
Further, a plurality of magnets 35 are fixedly mounted on one side of the hanging plate 21, a limiting groove 22 is formed in one side of the inner wall of the hanging plate 21, a second motor 31 is mounted on one side of the outer wall of the hanging plate 21 through bolts, a rotating piece 23 is welded to the end portion of the second motor 31, and the rotating piece 23 is driven by the second motor 31 to move.
Further, one end swing joint of rotating piece 23 has stub bar 34, and rotating piece 23 pulls stub bar 34 activity, and one side of the inside of spacing groove 22 slides and pegs graft and has exhibition board 27, and exhibition board 27 moves in the inside of spacing groove 22, and one side swing joint of exhibition board 27 has spliced pole 26.
Further, the ends of the connecting column 26 and the short rod 34 are provided with the sleeves 25, after the short rod 34 moves, the sleeves 25 pull the connecting column 26 to move, the pulling rod 24 is inserted between the two sleeves 25, the pulling rod 24 is also pulled by the short rod 34, one side of the flattening plate 27 is in threaded connection with the threaded rod 28, the threaded rod 28 rotates to be inserted into the flat plate 27, one side of the threaded rod 28 is attached to the magnet 35, and the drawing can be pressed by the threaded rod 28.
Further, mounting panel 30 has been welded to one side of link plate 21 inner wall, and there is set drawing pole 29 at mounting panel 30's top through bearing swing joint, and the drawing cover is in the outside of set drawing pole 29, and one side of mounted frame 1 has exhibition board 32 through pivot swing joint, satisfies placing of drawing behind the rotatable angle of exhibition board 32, and there is cardboard 33 one side welding of exhibition board 32, and cardboard 33 makes the drawing unable drop.
A drawing hanging method for industrial design comprises the following steps:
s1, hanging and storing: the electric push rod 4 pushes the push plate 7, after the push plate 7 drives the drawing hanging plate 8 to move, a person puts the drawing ring into the hanging box 9, and the drawing is hung below the hanging plate 2;
s2, moving and hanging: after the first motor 11 makes the movable rod 18 move, the pulling rod 19 pulls the adjusting box 13, the adjusting box 13 can move outside the stabilizing rod 12, the distance between the inserting drawing rods 15 can be changed, and the drawing paper is suspended after moving;
s3, flattening and hanging: the drawing paper is sleeved outside the drawing sleeving rod 29, the second motor 31 enables the rotating piece 23 to move, the pulling rod 24 pulls the connecting column 26 to enable the flattening plate 27 to move, the drawing can be stretched into the flattening plate 27 after being unfolded, and the drawing is fixedly suspended after being unfolded.
Further, in S1, the picture hanging plate 8 is pulled by the spring 6 in the hanging plate 2, and in S3, after the flat plate 27 is pushed by the connecting column 26, the flat plate 27 slides in the limiting groove 22.
The working principle of the invention is as follows: a designer puts a drawing into the interior of the hanging box 9 in a circling manner, the electric push rod 4 is started to enable the end part of the electric push rod to push the push plate 7, the push plate 7 drives the hanging board 8 to move, the hanging box 9 is pushed out of the hanging frame 1 to facilitate taking of the drawing, after the electric push rod 4 is pushed back, the spring 6 pulls the hanging board 8 to move back, the drawing can be put out of the inserting drawing rod 15 in a circling manner, the first motor 11 is started, the first motor 11 enables the movable rod 18 to rotate for a certain angle, after the movable rod 18 pulls the pulling rod 19, the side plate 20 can drive the adjusting box 13 to move outside the stabilizing rod 12, the distance between two adjacent inserting drawing rods 15 can be changed, hanging of different drawings is facilitated, the designer puts the drawing outside the drawing sleeving drawing rod 29, the second motor 31 is started to enable the rotating piece 23 to move, the rotating piece 23 pulls the pulling rod 24, then pulls the connecting rod 24 to pull the connecting rod 26, and enables the flattening plate 27 to move in the limiting groove 22, the drawing outside the drawing sleeving rod 29 can be stretched into the display panel 27 after being unfolded, the threaded rod 28 is rotated to enable the drawing to be in contact with the magnet 35, the drawing is fixed after being unfolded, the drawing can be unfolded and hung, the display panel 32 is rotated by a certain angle, the display panel 32 can be rotated and inclined, and the drawing can be stored on the clamping plate 33.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a drawing linkage for industrial design which characterized in that: comprises a suspension bracket (1), wherein a suspension box (3) is welded on the outer wall of one side of the suspension bracket (1), first motors (11) are respectively installed on the two sides of the bottom of the suspension box (3) through bolts, movable rods (18) are fixedly installed at the end parts of the first motors (11), pull rods (19) are respectively and movably connected with the two ends of each movable rod (18), a plurality of stabilizing rods (12) are welded inside the suspension box (3), an adjusting box (13) is movably sleeved between every two adjacent stabilizing rods (12), a side plate (20) is welded on one side of each adjusting box (13), one end of each pull rod (19) is movably connected to one side of each side plate (20), a picture inserting rod (15) is welded on the top of each adjusting box (13), an outer plate (14) is welded on one side of the outer wall of each picture inserting rod (15), and a suspension plate (2) is installed on the outer wall of one side of the suspension bracket (1) through bolts, hang the inside both sides of board (2) and all install electric putter (4) through the bolt, hang the inside both sides of board (2) and all weld connecting plate (5), one side welding of connecting plate (5) has spring (6), the one end fixed mounting of spring (6) has push plate (7).
2. The drawing suspension device for industrial design according to claim 1, wherein: the novel multifunctional hanging box is characterized in that a hanging drawing board (8) is installed on one side of the pushing board (7) through a bolt, buckles (10) are connected to the two sides of the bottom of the hanging drawing board (8) through connecting ropes, and a hanging storage box (9) is fixedly installed at the bottom of the buckles (10).
3. The drawing suspension device for industrial design according to claim 2, wherein: the end part of the electric push rod (4) penetrates through the connecting plate (5), the drawing hanging plate (8) is connected inside the hanging plate (2) in a sliding mode, and grooves (16) are formed in the two sides of the top of the hanging box (3).
4. A drawing suspension device for industrial design according to claim 3, wherein: sliding grooves (17) have all been seted up to the both sides of recess (16) inner wall, the both sides sliding connection of regulating box (13) is in the inside of sliding grooves (17), one side fixed mounting of mounted frame (1) has link plate (21).
5. The drawing suspension device for industrial design according to claim 4, wherein: one side fixed mounting of link plate (21) has a plurality of magnet (35), spacing groove (22) have been seted up to one side of link plate (21) inner wall, second motor (31) are installed through the bolt to one side of link plate (21) outer wall, the tip welding of second motor (31) has rotation piece (23).
6. The drawing suspension device for industrial design according to claim 5, wherein: one end of the rotating piece (23) is movably connected with a short rod (34), one side inside the limiting groove (22) is slidably inserted with a spread plate (27), and one side of the spread plate (27) is movably connected with a connecting column (26).
7. The drawing suspension device for industrial design according to claim 6, wherein: the end parts of the connecting column (26) and the short rod (34) are respectively provided with a sleeve (25), a dragging rod (24) is inserted between the two sleeves (25), and a threaded rod (28) is connected to one side of the flattening plate (27) through threads.
8. The drawing suspension device for industrial design according to claim 4, wherein: mounting panel (30) have been welded to one side of link plate (21) inner wall, and there is set drawing pole (29) at the top of mounting panel (30) through bearing swing joint, there is display board (32) one side of mounted frame (1) through pivot swing joint, there is cardboard (33) one side welding of display board (32).
9. A drawing hanging method for industrial design is characterized by comprising the following steps:
s1, hanging and storing: an electric push rod (4) pushes a push plate (7), after the push plate (7) drives a drawing hanging plate (8) to move, a person puts a drawing circle into a hanging storage box (9), and the drawing is hung below a hanging plate (2);
s2, moving and hanging: after the movable rod (18) is moved by the first motor (11), the adjusting box (13) is pulled by the pulling rod (19), the adjusting box (13) can be movably arranged outside the stable rod (12), the distance between the picture inserting rods (15) can be changed, and the picture paper is suspended after moving;
s3, flattening and hanging: the drawing paper is sleeved outside the drawing sleeving rod (29), the second motor (31) enables the rotating piece (23) to move, the pulling rod (24) pulls the connecting column (26) to enable the unfolding plate (27) to move, the drawing can be stretched into the unfolding plate (27) after being unfolded, and the drawing is fixedly suspended after being unfolded.
10. The method of claim 9 for hanging graphic paper for industrial design, wherein: in the S1, the hanging board (8) is pulled in the hanging board (2) by the spring (6), and in the S3, after the flattening board (27) is pushed by the connecting column (26), the flattening board (27) slides in the limiting groove (22).
CN202110457172.1A 2021-04-27 2021-04-27 Drawing hanging device and drawing hanging method for industrial design Pending CN113147220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110457172.1A CN113147220A (en) 2021-04-27 2021-04-27 Drawing hanging device and drawing hanging method for industrial design

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110457172.1A CN113147220A (en) 2021-04-27 2021-04-27 Drawing hanging device and drawing hanging method for industrial design

Publications (1)

Publication Number Publication Date
CN113147220A true CN113147220A (en) 2021-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110457172.1A Pending CN113147220A (en) 2021-04-27 2021-04-27 Drawing hanging device and drawing hanging method for industrial design

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CN (1) CN113147220A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205661198U (en) * 2016-06-01 2016-10-26 成都理工大学 Drawing hanging tool for industrial design
CN207120585U (en) * 2017-09-13 2018-03-20 东北石油大学 Industrial design drawing hanger
CN208646383U (en) * 2018-08-24 2019-03-26 扬州工业职业技术学院 A kind of drawing hanger for industrial design
CN209381631U (en) * 2018-09-17 2019-09-13 青岛海易通创意设计股份有限公司 A kind of portable industrial design drawing hanger
CN209700200U (en) * 2018-12-13 2019-11-29 上海建科协立设计审图有限公司 A kind of drawing hanger of industrial design
CN211767339U (en) * 2020-03-19 2020-10-27 江西宸恩建设工程有限公司 Categorised piling bin of waterproofing membrane
CN212499608U (en) * 2020-05-20 2021-02-09 昆明理工大学 Adjustable drawing hanger for product design

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205661198U (en) * 2016-06-01 2016-10-26 成都理工大学 Drawing hanging tool for industrial design
CN207120585U (en) * 2017-09-13 2018-03-20 东北石油大学 Industrial design drawing hanger
CN208646383U (en) * 2018-08-24 2019-03-26 扬州工业职业技术学院 A kind of drawing hanger for industrial design
CN209381631U (en) * 2018-09-17 2019-09-13 青岛海易通创意设计股份有限公司 A kind of portable industrial design drawing hanger
CN209700200U (en) * 2018-12-13 2019-11-29 上海建科协立设计审图有限公司 A kind of drawing hanger of industrial design
CN211767339U (en) * 2020-03-19 2020-10-27 江西宸恩建设工程有限公司 Categorised piling bin of waterproofing membrane
CN212499608U (en) * 2020-05-20 2021-02-09 昆明理工大学 Adjustable drawing hanger for product design

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Application publication date: 20210723