CN107940407A - The mounting structure of lamp holder and light bulb - Google Patents
The mounting structure of lamp holder and light bulb Download PDFInfo
- Publication number
- CN107940407A CN107940407A CN201711053380.5A CN201711053380A CN107940407A CN 107940407 A CN107940407 A CN 107940407A CN 201711053380 A CN201711053380 A CN 201711053380A CN 107940407 A CN107940407 A CN 107940407A
- Authority
- CN
- China
- Prior art keywords
- case
- slide bar
- light bulb
- boss
- circuit board
- 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.)
- Granted
Links
- 230000000694 effects Effects 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/162—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to traction or compression, e.g. coil springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/18—Latch-type fastening, e.g. with rotary action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of lamp holder and the mounting structure of light bulb, including case, light bulb is installed on case, a pairs of posts is fixed with the top of case, circuit board is provided with case above light bulb, a pair of conductive contact is fixed with the upper surface of circuit board, a pair of of elastic conducting acusector is fixed with the lower face of circuit board, it is provided with case and is moved down in light bulb removal for drive circuit board so that conductive contact departs from the driving structure of binding post, position limiting structure is provided between light bulb and case, position limiting structure includes the slide bar that can be laterally slidably connected on the side wall of case, the through hole for sliding bar is provided with the side wall of case, slide bar one end extend into sliding slot and offsets with the lower face of boss, the locking mechanism for being used to lock slide bar after slide bar engages with boss is provided with the case of sliding intracavitary side；The present invention can effectively avoid the generation of electric shock accidents, and can be brought convenience to the replacement of light bulb when more changing the bulb.
Description
Technical field
The invention belongs to electric device technical field, is related to a kind of mounting structure of lamp holder and light bulb.
Background technology
The mode that light bulb is generally connected through a screw thread at present is connected on lamp holder, when bulb-damage, it is necessary to by old light bulb
Screwed down from lamp holder, and new light bulb is screwed on lamp holder；But current lamp holder is when light bulb is backed out, lamp holder still with electricity
Source is connected, when human body is contacted with the conductive sheet in lamp holder, it is easy to the phenomenon got an electric shock occur, it is hidden to there is very big safety
Suffer from, and when more changing the bulb, light bulb needs to screw on from lamp holder to back out, and there are the shortcomings that replacing bulb trouble.
The content of the invention
To solve the above-mentioned problems, the present invention devise a kind of mounting structure of lamp holder and light bulb, its when more changing the bulb,
The generation of electric shock accidents can be effectively avoided, and can be brought convenience to the replacement of light bulb.
The object of the present invention is achieved like this：
The lamp holder of the present invention and the mounting structure of light bulb, including it is internally provided with the case of cavity and bottom end opening, case
On light bulb is installed, the upper end insertion of light bulb is fixed with a pairs of posts in the cavities, at the top of case, and binding post runs through case
After stretch into case, circuit board is provided with the case above light bulb, is fixed with and is used for and wiring on the upper surface of circuit board
The lower end of column offsets to realize a pair of conductive contact being electrically connected, be fixed with the lower face of circuit board for light bulb upper end
Contact offsets to realize a pair of of the elastic conducting acusector being electrically connected, and is provided with case and is used in light bulb removal under drive circuit board
Move so that conductive contact departs from the driving structure of binding post, driving structure includes bolt, and the threaded shank activity of bolt runs through case
It is threadedly coupled afterwards with circuit board, gap is left between the upper end of bolt and case, outside the threaded shank between case and circuit board
The first spring is set with, boss is provided with the both sides outer wall of light bulb, is provided with what is slipped into for boss on the madial wall of case
Sliding slot, is provided with position limiting structure between light bulb and case, position limiting structure includes laterally slidably being connected on the side wall of case
Slide bar, be provided with the through hole for sliding bar on the side wall of case, slide bar one end extend into sliding slot and with boss
End face offsets, and annular nib is provided with the lateral wall of slide bar, and the cunning slided for annular nib is provided with the side wall of through hole
Chamber, slides the end cap for being threadedly coupled at the outer end of chamber and being useful for preventing annular nib from departing from sliding chamber, is provided with end cap for cunning
The passage that bar part is pierced by, the slide bar outer cover between annular nib and sliding bottom of chamber portion, which is equipped with, to be used to promote annular nib so that sliding
Bar departs from the second spring of boss, and boss and slide bar offset and leave gap between rear boss and the bottom of sliding slot, positioned at sliding intracavitary
It is provided with the case of side and is used for the locking mechanism for locking slide bar after slide bar engages with boss, locking mechanism includes check lock lever,
Locking hole connected with through hole and lower ending opening is provided with case, check lock lever is slidably connected in locking hole, locking
It is provided with and is passed through for slide bar and internal diameter is more than the limit hole of slide bar outside diameter in bar, is provided with locking on the inner top of limit hole
Block, is provided with the card slot being caught in for latch segment on the lateral wall of slide bar, is set between check lock lever upper end and the interior bottom of locking hole
It is equipped with for promoting check lock lever so that latch segment snaps onto the 3rd spring in card slot, the lower end of check lock lever and the upper surface of light bulb
Offset.
The lamp holder of the present invention and the mounting structure of light bulb, wherein, one end that slide bar is located at boss is provided with and can match somebody with somebody with boss
Close and be oriented to facilitate the guiding surface that slide bar and boss offset；By the setting of guiding surface, when slide bar and boss coordinate, lead
It can coordinate to inclined-plane with boss and be oriented to facilitate slide bar to offset with boss.
The lamp holder of the present invention and the mounting structure of light bulb, wherein, latch segment is rounding mesa-shaped structure, the shape and lock of card slot
The shape of tight block matches；By the way that latch segment is arranged to rounding mesa-shaped structure, so, latch segment can be more easily caught in
Into card slot.
The lamp holder of the present invention and the mounting structure of light bulb, wherein, one end that slide bar is located at end cap is provided with and can match somebody with somebody with passage
Close and be oriented to facilitate slide bar to be pierced by the annular guide surface of passage；By the setting of annular guide surface, when slide bar and boss depart from,
Slide bar can be facilitated to be pierced by passage.
After the present invention is by using said structure, when more changing the bulb, the generation of electric shock accidents, and nothing can be effectively avoided
Light bulb need to be turned, is brought convenience so as to the replacement to light bulb.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is amplified structure diagram at A in Fig. 1.
Embodiment
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
A kind of mounting structure of lamp holder and light bulb, including it is internally provided with the case 1 of cavity 11 and bottom end opening, case 1
On light bulb 2 is installed, the upper end of light bulb 2 is inserted in cavity 11, and the top of case 1 is fixed with a pairs of posts 3, binding post 3
Stretched into after case 1 in case 1, circuit board 4 is provided with the case 1 of the top of light bulb 2, is consolidated on the upper surface of circuit board 4
Surely it is useful for offseting with the lower end of binding post 3 to realize a pair of conductive contact 41 being electrically connected, is fixed on the lower face of circuit board 4
It is useful for offseting to realize a pair of of the elastic conducting acusector 42 being electrically connected with the contact 21 of 2 upper end of light bulb, is provided with case 1 in lamp
Moved down during the dismounting of bubble 2 for drive circuit board 4 so that conductive contact 41 departs from the driving structure of binding post 3, driving structure includes
Bolt 51, the activity of threaded shank 511 of bolt 51 are threadedly coupled after case 1 with circuit board 4, upper end and the case 1 of bolt 51
Between leave gap, 511 outer cover of threaded shank between case 1 and circuit board 4 is equipped with the first spring 52, the bullet of the first spring 52
Power is less than the elastic force of elastic conducting acusector 42, is provided with boss 22 on the both sides outer wall of light bulb 2, is provided with the madial wall of case 1
The sliding slot 12 slipped into for boss 22, is provided with position limiting structure between light bulb 2 and case 1, position limiting structure includes sliding laterally
Ground is connected to the slide bar 61 on the side wall of case 1, and the through hole 13 slided for slide bar 61, slide bar are provided with the side wall of case 1
61 one end extend into sliding slot 12 and offset with the lower face of boss 22, and annular nib 611 is provided with the lateral wall of slide bar 61,
The cunning chamber 14 slided for annular nib 611 is provided with the side wall of through hole 13, is threadedly coupled at the outer end of sliding chamber 14 useful
In preventing annular nib 611 from departing from the end cap 62 of sliding chamber 14, the passage being pierced by for 61 part of slide bar is provided with end cap 62
621,61 outer cover of slide bar between annular nib 611 and sliding 14 bottom of chamber, which is equipped with, to be used to promote annular nib 611 so that slide bar
61 depart from the second spring 63 of boss 22, and boss 22 and slide bar 61 offset between being left between rear boss 22 and the bottom of sliding slot 12
Gap, is provided with the case 1 of the sliding inner side of chamber 14 and is used for the locking mechanism for locking slide bar 61 after slide bar engages with boss 22,
Locking mechanism includes check lock lever 71, and locking hole 15 connecting and lower ending opening with through hole 13, check lock lever 71 are provided with case 1
Slidably it is connected in locking hole 15, is provided with and is passed through for slide bar 61 and internal diameter is more than 61 outside diameter of slide bar in check lock lever 71
Limit hole 711, is provided with latch segment 712 on the inner top of limit hole 711, is provided with the lateral wall of slide bar 61 for latch segment
712 card slots 611 being caught in, be provided between 71 upper end of check lock lever and the interior bottom of locking hole 15 for promoting check lock lever 71 so that
Latch segment 712 snaps onto the 3rd spring 64 in card slot 611, and the lower end and the upper surface of light bulb 2 of check lock lever 71 offset.
One end that slide bar 61 is located at boss 22 is provided with and with boss 22 guiding can be coordinated to facilitate slide bar 61 and 22 phase of boss
The guiding surface 612 supported；By the setting of guiding surface, when slide bar and boss coordinate, guiding surface can coordinate with boss
It is oriented to facilitate slide bar to offset with boss.
Latch segment 712 is rounding mesa-shaped structure, and the shape of card slot 611 matches with the shape of latch segment 712；By that will lock
Block is arranged to rounding mesa-shaped structure, and so, latch segment can be snapped onto more easily in card slot.
One end that slide bar 61 is located at end cap 62 is provided with and with passage 621 guiding can be coordinated to facilitate slide bar 61 to be pierced by passage
621 annular guide surface 613；By the setting of annular guide surface, when slide bar and boss depart from, slide bar can be facilitated to be pierced by logical
Road.
When needing to disassemble light bulb from lamp holder：Light bulb is promoted to be moved to lamp holder side first, light bulb promotes lock
Tight bar moves up, and after check lock lever compresses the 3rd spring and moves up, the latch segment on check lock lever can depart from the card slot on slide bar, locking
After block departs from card slot, second spring promotes annular nib to move laterally, and post portion is pierced by end cap, and slide bar solves after departing from boss
Except to the spacing of light bulb, so that boss can be skidded off from sliding slot, and then the dismounting to light bulb is realized；In light bulb removal
Afterwards, circuit board loses upward thrust, and under the action of bolt and the first spring, the first spring promotes circuit board to move down, circuit
Conductive contact on plate departs from binding post automatically, so that enable to elastic conducting acusector not charged after light bulb removal, and then
The generation of electric shock accidents can effectively be avoided.
When needing light bulb being installed on lamp holder, the boss on light bulb is slided into sliding slot, and causes the upper of light bulb
Hold the lower end with check lock lever to be adjacent to, then promote slide bar to cause the inside Slideslip of slide bar, slide bar is located at one end and the boss of boss
After offseting, the latch segment on check lock lever can be snapped onto in card slot automatically, so as to fulfill the locking to light bulb, after light bulb locking,
Light bulb upper end can promote circuit board to move up, and the conductive contact on circuit board can offset with binding post, the contact energy on light bulb
It is enough to offset with elastic conducting acusector, so that after light bulb and case assembling, it is capable of the power supply of turn on automatically light bulb.
It should be noted that in the embodiment above, as long as reconcilable technical solution can carry out permutation and combination, this
Field technology personnel can be possible to according to the mathematical knowledge limit of permutation and combination, and therefore, the present invention is no longer to permutation and combination
Technical solution afterwards is illustrated one by one, but it is understood that presently disclosed for the technical solution after permutation and combination.
It should be noted that listed above is only a kind of specific embodiment of the invention.It is clear that the invention is not restricted to
Upper embodiment, can also there is many deformations.
In short, all changes that those of ordinary skill in the art directly can export or associate from present disclosure
Shape, is considered as protection scope of the present invention.
Claims (4)
1. the mounting structure of a kind of lamp holder and light bulb, including the case (1) of cavity (11) and bottom end opening is internally provided with, it is described
Light bulb (2) is installed, the upper end of the light bulb (2) is inserted in cavity (11), and the top of the case (1) is consolidated on case (1)
Surely a pairs of posts (3), the binding post (3) are stretched into after running through case (1) in case (1), it is characterised in that：The lamp
Circuit board (4) is provided with case (1) above bubble (2), is fixed with and is used for and binding post on the upper surface of the circuit board (4)
(3) lower end offsets to realize a pair of conductive contact (41) being electrically connected, and is fixed with and is used on the lower face of the circuit board (4)
Offset with the contact (21) of light bulb (2) upper end to realize a pair of of the elastic conducting acusector (42) being electrically connected, installed on the case (1)
Have and moved down when light bulb (2) is dismantled for drive circuit board (4) so that conductive contact (41) departs from the driving knot of binding post (3)
Structure, the driving structure include bolt (51), threaded shank (511) activity of the bolt (51) through case (1) afterwards and circuit
Plate (4) is threadedly coupled, and gap, the case (1) and circuit board (4) are left between the upper end of the bolt (51) and case (1)
Between threaded shank (511) outer cover the first spring (52) is housed, be provided with boss on the both sides outer wall of the light bulb (2)
(22), the sliding slot (12) slipped into for boss (22), the light bulb (2) and case are provided with the madial wall of the case (1)
(1) position limiting structure is provided between, the position limiting structure includes the slide bar that can be laterally slidably connected on the side wall of case (1)
(61), the through hole (13) slided for slide bar (61) is provided with the side wall of the case (1), described slide bar (61) one end is stretched into
Offset into sliding slot (12) and with the lower face of boss (22), annular nib is provided with the lateral wall of the slide bar (61)
(611), the cunning chamber (14) slided for annular nib (611), the sliding chamber (14) are provided with the side wall of the through hole (13)
Outer end at be threadedly coupled the end cap (62) for being useful for preventing annular nib (611) from departing from sliding chamber (14), the end cap (62)
In be provided with the passage (621) being partly pierced by for slide bar (61), between the annular nib (611) and sliding chamber (14) bottom
Slide bar (61) outer cover, which is equipped with, is used to promote annular nib (611) second spring so that slide bar (61) departs from boss (22)
(63), the boss (22) and slide bar (61) offset and leave gap between rear boss (22) and the bottom of sliding slot (12), positioned at cunning
It is provided with case (1) on the inside of chamber (14) and is used for the locking mechanism for locking slide bar (61) after slide bar engages with boss (22),
The locking mechanism includes check lock lever (71), and lock connected with through hole (13) and lower ending opening is provided with the case (1)
Tieholen (15), the check lock lever (71) are slidably connected in locking hole (15), be provided with the check lock lever (71) for
Slide bar (61) passes through and internal diameter is more than the limit hole (711) of slide bar (61) outside diameter, is set on the inner top of the limit hole (711)
There is latch segment (712), the card slot (611) being caught in for latch segment (712) is provided with the lateral wall of the slide bar (61), it is described
It is provided between check lock lever (71) upper end and the interior bottom of locking hole (15) for promoting check lock lever (71) so that latch segment (712)
The 3rd spring (64) in card slot (611) is snapped onto, the lower end and the upper surface of light bulb (2) of the check lock lever (71) offset.
2. the mounting structure of lamp holder according to claim 1 and light bulb, it is characterised in that the slide bar (61) is located at boss
(22) one end is provided with boss (22) to coordinate and is oriented to facilitate the guiding surface that slide bar (61) and boss (22) offset
(612)。
3. the mounting structure of lamp holder according to claim 1 or 2 and light bulb, it is characterised in that the latch segment (712) is
Rounding mesa-shaped structure, the shape of the card slot (611) match with the shape of latch segment (712).
4. the mounting structure of lamp holder according to claim 1 and light bulb, it is characterised in that the slide bar (61) is located at end cap
(62) one end is provided with passage (621) to coordinate and is oriented to facilitate slide bar (61) to be pierced by the annular guide surface of passage (621)
(613)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711053380.5A CN107940407B (en) | 2017-10-31 | 2017-10-31 | The mounting structure of lamp holder and light bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711053380.5A CN107940407B (en) | 2017-10-31 | 2017-10-31 | The mounting structure of lamp holder and light bulb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107940407A true CN107940407A (en) | 2018-04-20 |
| CN107940407B CN107940407B (en) | 2019-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711053380.5A Active CN107940407B (en) | 2017-10-31 | 2017-10-31 | The mounting structure of lamp holder and light bulb |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108974840A (en) * | 2018-08-16 | 2018-12-11 | 昆山捷云智能装备有限公司 | Ring batch loader, its application method and elastic ring feeding machine |
| CN109159767A (en) * | 2018-09-30 | 2019-01-08 | 临泉县赛莱斯农用车有限公司 | A kind of electronic automobile-used car light more changing device |
| CN109383670A (en) * | 2018-09-30 | 2019-02-26 | 临泉县赛莱斯农用车有限公司 | A kind of electronic automobile-used car lamp device being convenient for changing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108974840A (en) * | 2018-08-16 | 2018-12-11 | 昆山捷云智能装备有限公司 | Ring batch loader, its application method and elastic ring feeding machine |
| CN108974840B (en) * | 2018-08-16 | 2024-08-16 | 捷云智能装备(苏州)有限公司 | Ring batch loader, using method thereof and elastic ring feeding machine |
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