CN216872449U - Chamfering device for manufacturing electric connector - Google Patents

Chamfering device for manufacturing electric connector Download PDF

Info

Publication number
CN216872449U
CN216872449U CN202123289461.XU CN202123289461U CN216872449U CN 216872449 U CN216872449 U CN 216872449U CN 202123289461 U CN202123289461 U CN 202123289461U CN 216872449 U CN216872449 U CN 216872449U
Authority
CN
China
Prior art keywords
rod
fixed
chamfering
plate
electric connector
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
CN202123289461.XU
Other languages
Chinese (zh)
Inventor
赵鹏飞
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.)
Henan Tongzhen Technology Co ltd
Original Assignee
Henan Tongzhen 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 Henan Tongzhen Technology Co ltd filed Critical Henan Tongzhen Technology Co ltd
Priority to CN202123289461.XU priority Critical patent/CN216872449U/en
Application granted granted Critical
Publication of CN216872449U publication Critical patent/CN216872449U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)

Abstract

The utility model discloses a chamfering device for manufacturing an electric connector, which comprises a rotating mechanism for driving the electric connector to rotate, a chamfering mechanism for processing a chamfer angle on the electric connector and a dust removing mechanism for collecting metal debris, wherein the chamfering mechanism is arranged above the rotating mechanism, and the dust removing mechanism is arranged below the rotating mechanism. According to the electric connector, the chamfering mechanism is arranged, after the electric connector is fixed, the electric push rod extends to drive the electric connector to ascend to a proper position, the second motor drives the compound screw to rotate, the two moving blocks move oppositely, the moving blocks drive the mounting plate to move through the bent rods, the chamfering plate and the brush hair are in contact with the electric connector, the first motor drives the electric connector to rotate, the chamfering plate processes the electric connector, and the brush hair cleans scraps on a processing surface of the electric connector, so that the processing effect is effectively improved.

Description

Chamfering device for manufacturing electric connector
Technical Field
The utility model relates to the technical field of electric connector production, in particular to a chamfering device for manufacturing an electric connector.
Background
The electrical connector not only needs to meet general performance requirements, but also has the important requirements that the electrical connector has good contact, reliable operation and convenient maintenance, and whether the reliable operation directly affects the normal operation of an airplane circuit or not, and relates to the safety of the whole host. For this reason, the host circuit has very strict requirements on the quality and reliability of the electrical connector, and because of the high quality and reliability of the electrical connector, the electrical connector is also widely used in military systems such as aviation, aerospace, national defense and the like. Common classification methods for electrical connectors include shape, structure, use, etc.
The electric connector needs to use the chamfering device during production, and the existing chamfering device has the following problems to be solved urgently:
1. the scraps on the processing surface cannot be removed in time, so that the processing effect is influenced;
2. the metal chips generated in the chamfering process are scattered around and can seriously affect the human health after being inhaled into the respiratory tract.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a chamfering device for manufacturing an electrical connector.
The utility model realizes the purpose through the following technical scheme:
a chamfering device for manufacturing an electric connector comprises a rotating mechanism for driving the electric connector to rotate, a chamfering mechanism for processing a chamfer angle on the electric connector and a dust removing mechanism for collecting metal debris, wherein the chamfering mechanism is arranged above the rotating mechanism;
the rotary mechanism comprises a fixed shell, side plates, an electric push rod, a first motor, a rotary shaft, a rotary disc, a sliding groove, a vertical plate, a threaded rod, a knob, a rotary block, a clamping plate and a slide rod, wherein the side plates are arranged on two sides of the fixed shell, the electric push rod is fixed below the side plates, the first motor is arranged in the fixed shell, the rotary shaft is arranged above the first motor, the rotary disc is fixed above the rotary shaft, the sliding groove is arranged on the rotary disc, the vertical plate is fixed above the rotary disc, the threaded rod is arranged on the inner side of the vertical plate, the knob is fixed at one end of the threaded rod, the rotary block is fixed at the other end of the threaded rod, the clamping plate is arranged on the outer side of the rotary block, and the slide rod is fixed below the clamping plate;
the chamfering mechanism comprises a bent plate, an adjusting box, a second motor, a compound screw, a moving block, bent rods, mounting plates, chamfering plates and bristles, wherein the adjusting box is fixed at the front part of the bent plate, the second motor is fixed on the side surface of the adjusting box, the compound screw is mounted on the second motor, the moving blocks are arranged on the outer sides of the compound screws, the number of the moving blocks is two, the bent rods are fixed below the moving blocks, the mounting plates are fixed at one ends of the bent rods, far away from the moving blocks, the chamfering plates are arranged on the mounting plates on the left side, and the bristles are arranged on the mounting plates on the right side;
dust removal mechanism includes rose box, filter screen, air exhauster, gas-supply pipe, cover, the supporting component of breathing in, install on the rose box the filter screen, the rose box both sides are fixed with the air exhauster, install on the air exhauster the gas-supply pipe, gas-supply pipe one end is fixed with cover of breathing in, install the rose box below the supporting component.
Preferably, the support assembly comprises a support column and a support table, and the support table is fixed below the support column; the support table is welded with the support column.
So set up, the support column with the brace table cooperates together and supports top equipment, has effectively improved the stability of device.
Preferably, the support assembly comprises a support rod and an inclined rod, and the inclined rod is fixed on the outer side of the support rod; the inclined rod is welded with the supporting rod.
So set up, the bracing piece with the cooperation is supported top equipment jointly to the down tube, has effectively improved the stability of device.
Preferably, the side plate is welded with the fixed shell, the electric push rod is welded with the side plate, the first motor is connected with the fixed shell through a bolt, the rotary plate is welded with the rotary shaft, the vertical plate is welded with the rotary plate, the knob is welded with the threaded rod, and the slide rod is welded with the clamping plate.
So set up, place electric connector two between the splint, rotate the knob, the knob passes through the threaded rod drives the turning block rotates, the turning block drives splint remove, splint drive the slide bar is followed the spout removes, splint remove and the electric connector contact, two splint cooperate jointly to fix electric connector, have effectively improved the stability of electric connector in the course of working.
Preferably, the adjusting box is welded to the bent plate, the second motor is connected to the adjusting box through a bolt, the bent rod is welded to the moving block, and the mounting plate is welded to the bent rod.
According to the arrangement, after the electric connector is fixed, the electric push rod extends to drive the electric connector to ascend to a proper position, the second motor drives the compound screw to rotate, the two movable blocks move oppositely, the movable blocks drive the mounting plate to move through the bent rods, the chamfer plate and the bristles are in contact with the electric connector, the first motor drives the electric connector to rotate, the chamfer plate processes the electric connector, the bristles clean chips on the processing surface of the electric connector, and the processing effect is effectively improved.
Preferably, the air extractor is connected with the filter box through a bolt, and the air suction cover is welded with the air conveying pipe.
So set up, the metal piece that processing produced is in under the effect of air extractor pass through inhale the cover with the gas-supply pipe gets into the rose box, the filter screen filters the piece in the gas, and the gaseous discharge after the filtration the rose box so collects metal piece, has effectively protected staff's healthy.
Compared with the prior art, the utility model has the following beneficial effects:
1. by arranging the chamfering mechanism, after the electric connector is fixed, the electric push rod extends to drive the electric connector to ascend to a proper position, the second motor drives the compound screw to rotate, the two movable blocks move oppositely, the movable blocks drive the mounting plate to move through the bent rods, the chamfering plate and the brush hair are in contact with the electric connector, the first motor drives the electric connector to rotate, the chamfering plate processes the electric connector, and the brush hair cleans chips on the processing surface of the electric connector, so that the processing effect is effectively improved;
2. through setting up dust removal mechanism, the metal piece that processing produced gets into the rose box through cover and the gas-supply pipe of breathing in under the effect of air extractor, and the filter screen filters the piece in the gas, and the gaseous discharge rose box after the filtration so collects metal piece, has effectively protected staff's is healthy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a first embodiment of a chamfering apparatus for manufacturing an electrical connector according to the present invention;
FIG. 2 is a schematic view of a second structure of a chamfering apparatus for manufacturing an electrical connector according to the present invention;
FIG. 3 is a first front view of the inner structure of the chamfering apparatus for manufacturing electrical connectors according to the present invention;
FIG. 4 is a second front view of the inner structure of the chamfering apparatus for manufacturing electrical connectors according to the present invention;
FIG. 5 is an enlarged front view of the inner structure of the turntable of the chamfering apparatus for manufacturing electrical connectors according to the present invention.
The reference numerals are illustrated below:
1. a rotation mechanism; 101. a stationary case; 102. a side plate; 103. an electric push rod; 104. a first motor; 105. a rotating shaft; 106. a turntable; 107. a chute; 108. a vertical plate; 109. a threaded rod; 110. a knob; 111. rotating the block; 112. a splint; 113. a slide bar; 2. a chamfering mechanism; 201. bending a plate; 202. an adjusting box; 203. a second motor; 204. compounding a screw rod; 205. a moving block; 206. bending a rod; 207. mounting a plate; 208. chamfering the angle plate; 209. brushing; 3. a dust removal mechanism; 301. a filter box; 302. a filter screen; 303. an air extractor; 304. a gas delivery pipe; 305. an air intake cover; 306. a support assembly; 3061. a support pillar; 3062. a support table; 3063. a support bar; 3064. a diagonal rod.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The utility model will be further described with reference to the accompanying drawings in which:
example 1
As shown in fig. 1, 3 and 5, the chamfering device for manufacturing the electric connector comprises a rotating mechanism 1 for driving the electric connector to rotate, a chamfering mechanism 2 for processing a chamfer angle on the electric connector, and a dust removing mechanism 3 for collecting metal debris, wherein the chamfering mechanism 2 is arranged above the rotating mechanism 1, and the dust removing mechanism 3 is arranged below the rotating mechanism 1;
the rotating mechanism 1 comprises a fixed shell 101, a side plate 102, an electric push rod 103, a first motor 104, a rotating shaft 105, a rotary table 106, a sliding groove 107, an upright plate 108, a threaded rod 109, a knob 110, a rotating block 111, a clamping plate 112 and a sliding rod 113, wherein the side plate 102 is arranged on two sides of the fixed shell 101, the electric push rod 103 is fixed below the side plate 102, the first motor 104 is arranged in the fixed shell 101, the rotating shaft 105 is arranged above the first motor 104, the rotary table 106 is fixed above the rotating shaft 105, the sliding groove 107 is arranged on the rotary table 106, the upright plate 108 is fixed above the rotary table 106, the threaded rod 109 is arranged on the inner side of the upright plate 108, the knob 110 is fixed at one end of the threaded rod 109, the rotating block 111 is fixed at the other end of the threaded rod 109, the clamping plate 112 is arranged on the outer side of the rotating block 111, and the sliding rod 113 is fixed below the clamping plate 112;
the chamfering mechanism 2 comprises a bent plate 201, an adjusting box 202, a second motor 203, a composite screw 204, a moving block 205, a bent rod 206, a mounting plate 207, a chamfering plate 208 and bristles 209, wherein the adjusting box 202 is fixed at the front part of the bent plate 201, the second motor 203 is fixed on the side surface of the adjusting box 202, the composite screw 204 is mounted on the second motor 203, the moving blocks 205 are arranged on the outer side of the composite screw 204, the number of the moving blocks 205 is two, the bent rod 206 is fixed below the moving blocks 205, the mounting plate 207 is fixed at one end of the bent rod 206, which is far away from the moving block 205, the chamfering plate 208 is arranged on the left mounting plate 207, and the bristles 209 are arranged on the right mounting plate 207;
the dust removing mechanism 3 comprises a filter box 301, a filter screen 302, an air extractor 303, air conveying pipes 304, an air suction cover 305 and a support component 306, wherein the filter screen 302 is installed on the filter box 301, the air extractor 303 is fixed on two sides of the filter box 301, the air conveying pipes 304 are installed on the air extractor 303, the air suction cover 305 is fixed at one end of each air conveying pipe 304, and the support component 306 is installed below the filter box 301.
The support assembly 306 comprises a support pillar 3061 and a support platform 3062, and the support platform 3062 is fixed below the support pillar 3061; the support platform 3062 is welded to the support post 3061; the supporting column 3061 and the supporting platform 3062 cooperate together to support equipment above, and the stability of the device is effectively improved. The side plate 102 is welded with the fixed shell 101, the electric push rod 103 is welded with the side plate 102, the first motor 104 is connected with the fixed shell 101 through bolts, the rotary disc 106 is welded with the rotary shaft 105, the vertical plate 108 is welded with the rotary disc 106, the knob 110 is welded with the threaded rod 109, and the sliding rod 113 is welded with the clamping plate 112; the electric connector is placed between the two clamping plates 112, the knob 110 is rotated, the knob 110 drives the rotating block 111 to rotate through the threaded rod 109, the rotating block 111 drives the clamping plates 112 to move, the clamping plates 112 drive the sliding rods 113 to move along the sliding grooves 107, the clamping plates 112 move to be in contact with the electric connector, the two clamping plates 112 cooperate with each other to fix the electric connector, and the stability of the electric connector in the machining process is effectively improved. The adjusting box 202 is welded with the bent plate 201, the second motor 203 is connected with the adjusting box 202 through bolts, the bent rod 206 is welded with the moving block 205, and the mounting plate 207 is welded with the bent rod 206; after the electric connector is fixed, the electric push rod 103 extends to drive the electric connector to ascend to a proper position, the second motor 203 drives the compound screw 204 to rotate, the two moving blocks 205 move oppositely, the moving blocks 205 drive the mounting plate 207 to move through the bent rod 206, the chamfering plate 208 and the bristles 209 are in contact with the electric connector, the first motor 104 drives the electric connector to rotate, the chamfering plate 208 processes the electric connector, the bristles 209 clean chips on the processing surface of the electric connector, and the processing effect is effectively improved. The air pump 303 is connected with the filter box 301 through bolts, and the air suction cover 305 is welded with the air conveying pipe 304; metal debris produced by processing enters the filter box 301 through the air suction cover 305 and the air conveying pipe 304 under the action of the air extractor 303, the filter screen 302 filters debris in air, and the filtered air is discharged out of the filter box 301, so that the metal debris is collected, and the physical health of workers is effectively protected.
In the above structure: when the device is used, an electric connector is placed between two clamping plates 112, a knob 110 is rotated, the knob 110 drives a rotating block 111 to rotate through a threaded rod 109, the rotating block 111 drives the clamping plates 112 to move, the clamping plates 112 drive a sliding rod 113 to move along a sliding groove 107, the clamping plates 112 move to be in contact with the electric connector, the two clamping plates 112 cooperate together to fix the electric connector, after the electric connector is fixed, an electric push rod 103 extends to drive the electric connector to ascend to a proper position, a second motor 203 drives a compound screw 204 to rotate, two moving blocks 205 move oppositely, the moving blocks 205 drive a mounting plate 207 to move through a bent rod 206, a chamfering plate 208 and bristles 209 are in contact with the electric connector, a first motor 104 drives the electric connector to rotate, the chamfering plate 208 processes the electric connector, the bristles 209 clean chips on the processing surface of the electric connector, metal chips generated by processing enter a filter box 301 through an air suction hood 305 and an air conveying pipe 304 under the action of an air extractor 303, filter screen 302 filters the piece in the gas, and gas outgoing filter box 301 after filtering collects metal debris like this, and the device is at the in-process that uses, and support column 3061 and brace table 3062 cooperate together to support the top equipment, have effectively improved the stability of device.
Example 2
As shown in fig. 2, 4, and 5, the difference between the embodiment 2 and the embodiment 1 is that the support post 3061 and the support platform 3062 are replaced by a support rod 3063 and an inclined rod 3064, and during the use of the device, the support rod 3063 and the inclined rod 3064 cooperate to support the equipment above, so that the stability of the device is effectively improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims (6)

1. The utility model provides an electric connector makes and uses chamfer device, is including being used for driving electric connector pivoted rotary mechanism (1), its characterized in that: the chamfering machine further comprises a chamfering mechanism (2) for processing chamfering on the electric connector and a dust removing mechanism (3) for collecting metal scraps, wherein the chamfering mechanism (2) is arranged above the rotating mechanism (1), and the dust removing mechanism (3) is arranged below the rotating mechanism (1);
the rotating mechanism (1) comprises a fixed shell (101), side plates (102), an electric push rod (103), a first motor (104), a rotating shaft (105), a rotary table (106), a sliding groove (107), a vertical plate (108), a threaded rod (109), a knob (110), a rotating block (111), a clamping plate (112) and a sliding rod (113), wherein the side plates (102) are installed on two sides of the fixed shell (101), the electric push rod (103) is fixed below the side plates (102), the first motor (104) is installed inside the fixed shell (101), the rotating shaft (105) is installed above the first motor (104), the rotary table (106) is fixed above the rotating shaft (105), the sliding groove (107) is arranged on the rotary table (106), the vertical plate (108) is fixed above the rotary table (106), and the threaded rod (109) is installed on the inner side of the vertical plate (108), the knob (110) is fixed at one end of the threaded rod (109), the rotating block (111) is fixed at the other end of the threaded rod (109), the clamping plate (112) is arranged on the outer side of the rotating block (111), and the sliding rod (113) is fixed below the clamping plate (112);
the chamfering mechanism (2) comprises a bending plate (201), an adjusting box (202), a second motor (203), a composite screw (204), a moving block (205), a bending rod (206), a mounting plate (207), a chamfering plate (208) and bristles (209), the front part of the bent plate (201) is fixed with the adjusting box (202), the side surface of the adjusting box (202) is fixed with the second motor (203), the second motor (203) is provided with the compound screw (204), the outer side of the compound screw (204) is provided with the moving block (205), the number of the moving blocks (205) is two, the bent rod (206) is fixed below the moving blocks (205), the mounting plate (207) is fixed at one end of the bent rod (206) far away from the moving block (205), the chamfer plate (208) is arranged on the mounting plate (207) at the left side, and the bristles (209) are arranged on the mounting plate (207) at the right side;
dust removal mechanism (3) include rose box (301), filter screen (302), air extractor (303), gas-supply pipe (304), cover (305), supporting component (306) of breathing in, install on rose box (301) filter screen (302), rose box (301) both sides are fixed with air extractor (303), install on air extractor (303) gas-supply pipe (304), gas-supply pipe (304) one end is fixed with cover (305) of breathing in, install rose box (301) below supporting component (306).
2. The chamfering apparatus for manufacturing an electrical connector according to claim 1, wherein: the support assembly (306) comprises a support column (3061) and a support platform (3062), and the support platform (3062) is fixed below the support column (3061); the support platform (3062) is welded to the support post (3061).
3. The chamfering device for manufacturing the electrical connector as claimed in claim 1, wherein: the supporting component (306) comprises a supporting rod (3063) and an inclined rod (3064), and the inclined rod (3064) is fixed on the outer side of the supporting rod (3063); the inclined rod (3064) is welded with the support rod (3063).
4. The chamfering apparatus for manufacturing an electrical connector according to claim 1, wherein: the side plate (102) is welded with the fixed shell (101), the electric push rod (103) is welded with the side plate (102), the first motor (104) is connected with the fixed shell (101) through a bolt, the rotary disc (106) is welded with the rotary shaft (105), the vertical plate (108) is welded with the rotary disc (106), the knob (110) is welded with the threaded rod (109), and the sliding rod (113) is welded with the clamping plate (112).
5. The chamfering apparatus for manufacturing an electrical connector according to claim 1, wherein: the adjusting box (202) is welded with the bent plate (201), the second motor (203) is connected with the adjusting box (202) through bolts, the bent rod (206) is welded with the moving block (205), and the mounting plate (207) is welded with the bent rod (206).
6. The chamfering apparatus for manufacturing an electrical connector according to claim 1, wherein: the air extractor (303) is connected with the filter box (301) through bolts, and the air suction cover (305) is welded with the air conveying pipe (304).
CN202123289461.XU 2021-12-25 2021-12-25 Chamfering device for manufacturing electric connector Active CN216872449U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123289461.XU CN216872449U (en) 2021-12-25 2021-12-25 Chamfering device for manufacturing electric connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123289461.XU CN216872449U (en) 2021-12-25 2021-12-25 Chamfering device for manufacturing electric connector

Publications (1)

Publication Number Publication Date
CN216872449U true CN216872449U (en) 2022-07-01

Family

ID=82148799

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123289461.XU Active CN216872449U (en) 2021-12-25 2021-12-25 Chamfering device for manufacturing electric connector

Country Status (1)

Country Link
CN (1) CN216872449U (en)

Similar Documents

Publication Publication Date Title
CN112387024A (en) A dust collecting equipment for weaving factory
CN216872449U (en) Chamfering device for manufacturing electric connector
CN211411406U (en) A dust removal air purification equipment for modern workshop
CN216223628U (en) Environment-friendly dust removal equipment
CN211098216U (en) A dust collector for carborundum production facility
CN216261356U (en) Rotary cleaning device of electrostatic dust collection equipment
CN112774357A (en) A dust removal air purification equipment for modern workshop
CN213856095U (en) Dust collector of low temperature deceleration machine
CN214233349U (en) Special dust collector in ceramic manufacture workshop
CN212974371U (en) Municipal domestic sewage treatment device
CN211245802U (en) Vertical dust removal environmental protection equipment
CN211462416U (en) Oil mist filters collection device
CN216681680U (en) Burnishing device is used in production of intelligence lock
CN112295407A (en) Filtering equipment using graphene ultrafiltration membrane
CN113814067A (en) Rotary cleaning device and rotary cleaning method of electrostatic dust removal equipment
CN213942502U (en) Environment-friendly flue gas dust remover convenient to clean and strain a section of thick bamboo
CN111957112A (en) Ash removal device for dust remover
CN213668334U (en) Integrated oil mist purifier
CN221107480U (en) Filter cartridge dust remover for dust purification
CN216646401U (en) Air quality monitor
CN217939541U (en) Industrial waste gas sampler with filtering structure
CN219232545U (en) Regenerated lead recovery device
CN217909557U (en) Filter cartridge dust remover
CN217191087U (en) Outer wall cleaning device for air compressor
CN217209677U (en) Novel outer hanging exhaust fume extracting device in garage

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant