CN206869078U - Mould with moving core - Google Patents
Mould with moving core Download PDFInfo
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- CN206869078U CN206869078U CN201720749563.XU CN201720749563U CN206869078U CN 206869078 U CN206869078 U CN 206869078U CN 201720749563 U CN201720749563 U CN 201720749563U CN 206869078 U CN206869078 U CN 206869078U
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- avoiding hollow
- hollow groove
- guiding piece
- moving core
- positioning
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Abstract
Mould with moving core, including coordinate the upper and lower mould for forming die cavity, and the moving core being removably inserted into die cavity, in addition to positioning seat and the guiding piece for drawing moving core slip；Detent mechanism is provided between guiding piece and positioning seat；Detent mechanism includes preceding avoiding hollow groove, location dimples, rear avoiding hollow groove, and positioning float, and positioning float can be locking interior so as to locking moving core to location dimples；Preceding avoiding hollow groove and location dimples, rear avoiding hollow groove are all disposed within when guiding piece draws moving core away from die cavity and positioned on the sliding path of float, preceding avoiding hollow groove and rear avoiding hollow groove split the front and rear sides in location dimples, and the tail end of location dimples is provided with the slope that leans forward in preceding avoiding hollow groove；When guiding piece draws moving core away from die cavity, positioning float successively can be slided vacantly in preceding avoiding hollow groove and rear avoiding hollow groove respectively.So, the abrasion of positioning float, guiding piece or positioning seat is reduced, extends their service life.
Description
Technical field
The present invention relates to a kind of mould, more particularly to a kind of mould with moving core.
Background technology
In the case where the structure of die casting or moulding is more complicated, generally require to set moving core on mould.
, it is necessary to extract the moving core out and the moving core is fixed on specific position after the completion of die casting or injection, with
Exempt from the moving core to come off, and be easy to drive the moving core accurately multiple during next matched moulds again by driver
Position.In order to ensure that the moving core is capable of the positioning of fast accurate, people have been devised by a variety of being directed to the moving core
Position-limit mechanism.Such as a kind of sliding block position limiting structure of die casting in Chinese utility model patent 201220656710.6,
Including cover half 1, dynamic model 2, the slider core 3 with the cover half 1 and the cooperation composition die casting die casting die cavity of the dynamic model 2, and
The sliding block joint 5 for the slider core 3 that is connected.Slide block guide rail 4 is installed with the dynamic model 2, the sliding block joint 5 is slided
It is dynamic to be arranged on the slide block guide rail 4.In the bottom surface of the sliding block joint 5, limited location slideway 51 and location dimples 52 are set.
Sliding block stopping means 6 is also installed with the dynamic model 2.The sliding block stopping means 6 includes being fitted in spring socket sleeve 61
The spacing steel ball 63 for the top pressure of spring 62 that is stressed.It is described when the sliding block joint 5 drives the slider core 3 to be displaced outwardly
Spacing steel ball 63 rolls top pressure in the spacing slideway 51 of the sliding block joint 5, and finally slips into the location dimples 52 and limit
Make the sliding distance of the sliding block joint 5.Molded, in the running of matched moulds in mould, the spacing steel ball 63 can all roll
Their contact surface is set to occur wearing and influence service life on the sliding block joint 5.
The content of the invention
In view of one of above-mentioned technical problem, goal of the invention of the invention is intended to make further the detent mechanism of moving core
Improvement.The present invention proposes a kind of mould with moving core, including coordinate form die cavity and above and below split upper mould, under
Mould, and the moving core being removably inserted into the die cavity, it is characterised in that also include positioning seat and for drawing
The guiding piece that the moving core slides；Detent mechanism is provided between the guiding piece and the positioning seat；The positioning
Mechanism includes preceding avoiding hollow groove, location dimples, rear avoiding hollow groove, and is arranged on the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove
The positioning float of opposite side, the positioning float can be locking interior to the location dimples so that the guiding piece is positioned at
On the positioning seat and then lock the moving core；The preceding avoiding hollow groove and location dimples, rear avoiding hollow groove are all disposed within described
Guiding piece is when drawing the moving core away from the die cavity on the sliding path of the positioning float, and the preceding avoiding hollow groove is with after
Avoiding hollow groove splits the front and rear sides in the location dimples, is set in the preceding avoiding hollow groove close to the tail end of the location dimples
It is equipped with the slope that leans forward；When the guiding piece draws the moving core away from the die cavity, the positioning float can be first
Vacantly slided in the preceding avoiding hollow groove and rear avoiding hollow groove respectively afterwards.
Wherein, the detent mechanism include preceding avoiding hollow groove, location dimples, rear avoiding hollow groove, and be arranged on it is described before keep away
The positioning float of dead slot, location dimples and rear avoiding hollow groove opposite side.So, from locus, the preceding avoiding hollow groove, determine
Position pit, avoiding hollow groove are provided in the same side, and the positioning float is provided in the side relative with them.Further skill
Art scheme can be that the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove are arranged on the guiding piece, and the positioning float is set
Put on the positioning seat；It is described fixed or the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove are arranged on the positioning seat
Position float is arranged on the guiding piece.
Wherein, the preceding avoiding hollow groove and location dimples, rear avoiding hollow groove are all disposed within the guiding piece and draw the active type
When core is away from the die cavity on the sliding path of the positioning float, the preceding avoiding hollow groove and rear avoiding hollow groove are split in the positioning
The front and rear sides of pit.So, after mechanograph is made in the die cavity, the moving core is drawn in the guiding piece
Sliding in and out during detaching the die cavity, the positioning float vacantly slides in the preceding avoiding hollow groove, and by described
The slope that the leans forward preceding avoiding hollow groove that slips away then slips into and locking in the location dimples, so as to guiding piece positioning
On the positioning seat and then lock the moving core.When needing to dismantle the moving core, continue to pull out described
Moving core, the positioning float slip away the location dimples, slided into after it is described after in avoiding hollow groove.In above-mentioned process
In, the positioning float is successively vacantly to be slided in the preceding avoiding hollow groove and rear avoiding hollow groove, so the positioning float difference
Phase mutual friction will not be produced with the preceding avoiding hollow groove and rear avoiding hollow groove substantially and is worn.
Wherein, the sliding path bag of the positioning float when guiding piece draws the moving core away from the die cavity
Two sections of paths are included, first paragraph path is, during core pulling, the guiding piece draws the moving core from being inserted in the die cavity
Interior insert state, which is changed into, detaches when detaching state of the die cavity, the sliding path of the positioning float.Second segment path
It is that after the completion of core pulling, the guiding piece continues outwards to draw the moving core movement so as to dismantle the activity from mould
During core, the sliding path of the positioning float.
According to above-mentioned technical proposal it can be found that compared with prior art, advantageous effects of the invention are, due to
It is provided with when the guiding piece draws the moving core away from the die cavity on the sliding path of the positioning float described
Preceding avoiding hollow groove and rear avoiding hollow groove, when the guiding piece draws the moving core away from the die cavity, the positioning float energy
It is enough successively vacantly to be slided in the preceding avoiding hollow groove and rear avoiding hollow groove respectively.So draw the moving core in the guiding piece
It is displaced outwardly during completing core pulling and dismounting, the positioning float can subtract by the preceding avoiding hollow groove and rear avoiding hollow groove
The generation of few abrasion.And during assembly jig, it is first that the moving core and the guiding piece is pre-assembled together for the ease of installation
Them are inwardly driven to be moved to the die cavity again.In the process, the positioning float equally can be by the preceding avoiding hollow groove
The generation of abrasion is reduced with the rear avoiding hollow groove.And either during the moving core is still dismantled in installation not
Need to dismantle the positioning float, significantly simplify the installation and removal operation of the moving core and guiding piece.Thus may be used
See, the setting of the rear avoiding hollow groove and the preceding avoiding hollow groove can greatly reduce the positioning float and be produced in sliding process
Abrasion, and be provided with it is described after avoiding hollow groove and the preceding avoiding hollow groove component, such as the guiding piece or the positioning seat
Abrasion, effectively extend the positioning float, the service life of the guiding piece or the positioning seat.
Further technical scheme is also possible that avoiding hollow groove is provided with close to the tail end of the location dimples in the rear
Hypsokinesis slope.So, it is described positioning float can successfully be slipped away by the hypsokinesis slope it is described after avoiding hollow groove, so as to
It is easy to the installation of the moving core.
Further technical scheme is also possible that the positioning float includes spherosome described in spherosome and elastic top pressure
Spring.
In order to drive the guiding piece to be displaced outwardly, further technical scheme is also possible that the positioning seat is consolidated
It is connected on the upper mould, the guiding piece is slidably arranged on the positioning seat, is set between the positioning seat and the guiding piece
It is equipped with the first guiding mechanism for guiding the guiding piece to slide in and out；Also include lead, the guiding piece is slided and set
Put on the lead, be provided between the guiding piece and the lead for guiding the guiding piece towards outer incline
Second guiding mechanism of upward sliding；When the upper mould moves up, the upper mould is led by described in positioning seat drive
Draw block to slide in and out under the collaboration guiding of first guiding mechanism and the second guiding mechanism, so as to draw the moving core
Detach the die cavity.
It is upper and lower on the lead that further technical scheme is also possible that second guide frame includes being arranged on
Split and be dislocated the lower guide runner of setting and upper guide runner, the gradient in the lower guide runner Relative vertical direction
Less than the gradient in the upper guide runner Relative vertical direction；Also led including being arranged on the left side that left and right is split on the guiding piece
To groove and right guide groove, the left guide groove adaptation lower guide runner is set, and the right guide groove is adapted to the upper guiding
Sliding block is set.So, in the starting stage of die sinking, the guiding piece first pass through the left guide groove be slidably arranged in it is described under lead
To on sliding block, under the guiding of the lower guide runner, the moving core low speed slides and detaches the die cavity.So as to anti-
The only moving core or other component damages caused by package power that the moving core is born is excessive.When the active type
After core completely disengages the die cavity, the left guide groove departs from the lower guide runner, and the guiding piece is slided by right guide groove
Dynamic to be arranged on the upper guide runner, on described under the guiding of guide runner, the moving core is outside to continue at a high speed
Slide.So in the case where ensureing that the moving core has enough sliding strokes, the lead is greatly reduced
Height, so as to reduce the space-consuming of the driving structure of the moving core.
It is upper and lower on the lead that further technical scheme is also possible that second guide frame includes being arranged on
Split and be dislocated the upper guide groove of setting and lower guide groove, the gradient in the lower guide groove Relative vertical direction is less than institute
State the gradient in guide groove Relative vertical direction；Also include being arranged on the guiding piece left guide runner that left and right splits and
Right guide runner, the left guide runner adaptation lower guide groove are set, and the right guide runner is adapted to the upper guide groove
Set.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram using the mould with moving core of technical solution of the present invention；
Fig. 2 is the cross-sectional view in A-A directions in Fig. 1；
Fig. 3 is the decomposition texture schematic diagram for the mould with moving core for applying technical solution of the present invention, is omitted in figure
The upper die and lower die；
Fig. 4 is the stereogram at the guiding piece back side；
Fig. 5 is the mplifying structure schematic diagram in B portions in Fig. 2；
Fig. 6 is the structural representation in the main view direction of the lead.
Embodiment
As shown in Figures 1 to 5, a kind of mould 100 with moving core 12, including coordinate and form die cavity 10 and divide up and down
Upper mould 1, the lower mould 11 put, and the moving core 12 being removably inserted into the die cavity 10.Also include positioning seat（2、
2a）With the guiding piece slided for drawing the moving core 12（3、3a）；In the guiding piece（3、3a）With the positioning seat
（2、2a）Between be provided with detent mechanism；The detent mechanism includes preceding avoiding hollow groove, location dimples, rear avoiding hollow groove, and with setting
Put the positioning float in the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove opposite side（4、4a）, the positioning float（4、
4a）Can be locking interior so as to the guiding piece to the location dimples（3、3a）It is positioned at the positioning seat（2、2a）It is upper and then
Lock the moving core 12；The preceding avoiding hollow groove and location dimples, rear avoiding hollow groove are all disposed within the guiding piece（3、3a）Lead
Positioning float when drawing the moving core 12 away from the die cavity 10（4、4a）Sliding path on, the preceding avoiding hollow groove and
Avoiding hollow groove splits the front and rear sides in the location dimples afterwards, the tail end in the preceding avoiding hollow groove close to the location dimples
It is provided with the slope that leans forward.When the guiding piece（3、3a）It is described fixed when drawing the moving core 12 away from the die cavity 10
Position float（4、4a）Successively can vacantly it be slided in the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33 respectively.
The structure of the mould 100 with moving core 12 of application technical solution of the present invention is made into one below in conjunction with the accompanying drawings
The explanation of step.
As shown in Figures 1 to 6, it is respectively arranged with guiding piece in the left and right sides of the moving core 12（3、3a）With it is described
Positioning seat（2、2a）.The guiding piece（3、3a）It is independently of the moving core 12 and is respectively fixedly connected in the moving core 12
The left and right sides on component.Certainly in other implementations, the guiding piece（3、3a）It can also be described in being arranged on
On moving core 12 and with the 12 integrally formed tectosome of moving core.In the guiding piece（3、3a）With the positioning seat
（2、2a）Between be provided with the detent mechanism with similar structures and function.Below between the positioning seat 2 and guiding piece 3
It is described exemplified by detent mechanism.Preceding avoiding hollow groove 31, location dimples 32, rear avoiding hollow groove 33 are provided with the guiding piece 3, it is described
Preceding avoiding hollow groove 31 and location dimples 32, rear avoiding hollow groove 33 are all disposed within the guiding piece（3、3a）It is remote to draw the moving core 12
During from the die cavity 10, on the sliding path of the positioning float 4, the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33 are split described
The front and rear sides of location dimples 32.The tail end of the location dimples 32 is provided with top rake in the preceding avoiding hollow groove 31
Domatic 310, in the rear avoiding hollow groove 33 tail end of the location dimples 32 is provided with hypsokinesis slope 330.Described
Positioning float 4 is provided with positioning seat 2, the positioning float 4 includes float housing 40, and spherosome 42 and elastic top pressure
The spring 41 of the spherosome 42, spherosome 42 and spring 41 are all disposed within the float housing 40.Wherein, the traction
Block（3、3a）The sliding path of the positioning float 4 includes two sections of ways when drawing the moving core 12 away from the die cavity 10
Footpath.First paragraph path is, during core pulling, the guiding piece（3、3a）The moving core 12 is drawn from being inserted in the die cavity
Insert state in 10, which is changed into, detaches when detaching state of the die cavity 10, the sliding path of the positioning float 4.Second segment
Path is, after the completion of core pulling, the guiding piece（3、3a）Continuation outwards draws the movement of moving core 12 so as to from mould
When dismantling the moving core 12, the sliding path of the positioning float 4.
After mechanograph is made in the die cavity 10, in the guiding piece（3、3a）The moving core 12 is drawn outwards to slide
It is dynamic detach the die cavity 10 during, the positioning float 4 vacantly slides in the preceding avoiding hollow groove 31, and by before described
The preceding avoiding hollow groove 31 that slips away of face of slope 310 then slips into and locking in the location dimples 32, so as to the traction
Block（3、3a）It is positioned at the positioning seat（2、2a）Go up and then lock the moving core 12.When needing to dismantle the moving core
When 12, continue to pull out the moving core 12, the positioning float 4 is slipped away the location dimples 32, and institute is slided into after
State in rear avoiding hollow groove 33.During above-mentioned, the positioning float 4 is successively in the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33
Interior hanging slip, so the positioning float 4 will not produce mutually substantially with the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33 respectively
Rub and wear.And during assembly jig, for the ease of installation, the moving core 12 and the guiding piece（3、3a）
Pre-assembled they inwardly to be driven again together during they move to the die cavity 10, the positioning float 4 equally can
The generation of abrasion is reduced by the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33.And either still dismantle the activity in installation
The positioning float 4 need not be all dismantled during core 12, significantly simplify the moving core 12 and guiding piece（3、
3a）Installation and removal operation.As can be seen here, the setting of the preceding avoiding hollow groove 31 and rear avoiding hollow groove 33 can greatly reduce institute
State positioning float 4 to form friction with the guiding piece 3 in sliding process and formed and worn, it is floating effectively to extend the positioning
The service life of sub and described guiding piece.
Certainly another embodiment is used as, preceding avoiding hollow groove 31, location dimples 32 and the rear avoiding hollow groove 33 are arranged on institute
State positioning seat（2、2a）On, the positioning float 4 is arranged on the guiding piece（3、3a）On.
The type of drive that the guiding piece 3 can be driven to be displaced outwardly is varied, such as can use hydraulic oil cylinder driving, or
Person is using the driving structure being set forth below.The positioning seat 2 is fixed on the upper mould 1, and the guiding piece 3 is slidably arranged in institute
State on positioning seat 2.Be provided between the positioning seat 2 and the guiding piece 3 for guide that the guiding piece 3 slides in and out
One guiding mechanism, first guiding mechanism include being arranged on a pair of chutes on the front on the guiding piece 3（36、37）, with
And it is arranged on a pair of directive slide tracks on the positioning seat 2（21、22）.Also include lead 5, the guiding piece 3 is slided and set
Put on the lead 5, be provided between the guiding piece 3 and the lead 5 for guiding the guiding piece 3 outwardly
Tilt upward the second guiding mechanism of slip.When the upper mould 1 moves up, the upper mould 1 is by the positioning seat（2、
2a）Drive the guiding piece（3、3a）Slid in and out under the collaboration guiding of first guiding mechanism and the second guiding mechanism,
The die cavity 10 is detached so as to draw the moving core 12.In order to prevent the moving core 12 from being slided on the lead 5
Occur obvious abrasion when dynamic, cushion block 53, the cushion block 53 are additionally provided between the moving core 12 and the lead 5
It is connected on the lead 5.
Wherein, what second guide frame included being arranged on the lead 5 upper and lower split and is dislocated setting
Lower guide runner 52 and upper guide runner 51, the gradient in the lower Relative vertical direction of guide runner 52, which is less than on described, to be led
To the gradient in the Relative vertical direction of sliding block 51；Also include being arranged on the He of left guide groove 35 that left and right is split on the guiding piece 3
Right guide groove 34, the left guide groove 35 are adapted to the lower guide runner 52 and set, and the right guide groove 34, which is adapted on described, leads
Set to sliding block 51.So, first pass through the left guide groove 35 in the starting stage of die sinking, the guiding piece 3 and be slidably arranged in
On the lower guide runner 52.Under the guiding of the lower guide runner 52, the low speed of moving core 12 slip detaches described
Die cavity 10.Can so prevent because package power that the moving core 12 is born is excessive and caused by the moving core 12 or its
His component damage.After the moving core 12 completely disengages die cavity 10, the left guide groove 35 departs from the lower guiding
Sliding block 52, the guiding piece 3 are slidably arranged on the upper guide runner 51 by right guide groove 34, the guide runner on described
Under 51 guiding, the moving core 12 is to continue to slide out at a high speed.So ensureing that it is enough that the moving core 12 has
Sliding stroke in the case of, the height of the lead 5 is greatly reduced, so as to reduce the moving core 12
The space-consuming of driving structure.
In order to use above-mentioned similar technique effect, second guide frame can also use following embodiment.
Second guide frame includes being arranged on the upper and lower upper guide groove for splitting and being dislocated setting on the lead 5 with
Guide groove, the gradient in the lower guide groove Relative vertical direction are less than the gradient in the upper guide groove Relative vertical direction；
Also include being arranged on the left guide runner and right guide runner that left and right is split on the guiding piece 3, the left guide runner adaptation
The lower guide groove is set, and the right guide runner adaptation upper guide groove is set.
Claims (7)
1. the mould with moving core, including coordinate the upper die and lower die for forming die cavity and splitting up and down, and removably insert
Enter to the moving core in the die cavity, it is characterised in that also include positioning seat and slided for drawing the moving core
Guiding piece；Detent mechanism is provided between the guiding piece and the positioning seat；The detent mechanism include preceding avoiding hollow groove,
Location dimples, rear avoiding hollow groove, and be arranged on the positioning of the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove opposite side and float
Son, the positioning float can it is locking to the guiding piece being positioned on the positioning seat in the location dimples and then
Lock the moving core；The preceding avoiding hollow groove and location dimples, rear avoiding hollow groove are all disposed within the guiding piece and draw the work
When ejector half core is away from the die cavity on the sliding path of the positioning float, the preceding avoiding hollow groove and rear avoiding hollow groove are split described
The front and rear sides of location dimples, the tail end of the location dimples is provided with the slope that leans forward in the preceding avoiding hollow groove；When
When the guiding piece draws the moving core away from the die cavity, the positioning float can be successively respectively in the preceding empty avoiding
Vacantly slided in groove and rear avoiding hollow groove.
2. mould according to claim 1, it is characterised in that the preceding avoiding hollow groove, location dimples and rear avoiding hollow groove are set
On the guiding piece, the positioning float is arranged on the positioning seat；Or the preceding avoiding hollow groove, location dimples and after keep away
Dead slot is arranged on the positioning seat, and the positioning float is arranged on the guiding piece.
3. mould according to claim 1, it is characterised in that tail end of the avoiding hollow groove close to the location dimples in the rear
Portion is provided with hypsokinesis slope.
4. according to the mould described in claim 1,2 or 3, it is characterised in that the positioning float includes spherosome and elasticity
The spring of spherosome described in top pressure.
5. according to the mould described in claim 1,2 or 3, it is characterised in that the positioning seat is fixed on the upper mould, described
Guiding piece is slidably arranged on the positioning seat, is provided between the positioning seat and the guiding piece for guiding the traction
The first guiding mechanism that block slides in and out；Also include lead, the guiding piece is slidably arranged on the lead, in institute
State the second Guiding machine being provided between guiding piece and the lead for guiding the guiding piece to tilt upward slip outwardly
Structure；When the upper mould moves up, the upper mould drives the guiding piece in first Guiding machine by the positioning seat
Slid in and out under the collaboration guiding of structure and the second guiding mechanism, the die cavity is detached so as to draw the moving core.
6. mould according to claim 5, it is characterised in that second guide frame includes being arranged on the lead
On the upper and lower lower guide runner for splitting and being dislocated setting and upper guide runner, the lower guide runner Relative vertical direction
Gradient be less than the upper guide runner Relative vertical direction gradient；Also include being arranged on left and right point on the guiding piece
The left guide groove and right guide groove put, the left guide groove adaptation lower guide runner are set, the right guide groove adaptation institute
State guide runner setting.
7. mould according to claim 5, it is characterised in that second guide frame includes being arranged on the lead
On the upper and lower upper guide groove for splitting and being dislocated setting and lower guide groove, the inclination in the lower guide groove Relative vertical direction
Gradient of the degree less than the upper guide groove Relative vertical direction；Also led including being arranged on the left side that left and right is split on the guiding piece
To sliding block and right guide runner, the left guide runner adaptation lower guide groove is set, described in the right guide runner adaptation
Upper guide groove is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720749563.XU CN206869078U (en) | 2017-06-26 | 2017-06-26 | Mould with moving core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720749563.XU CN206869078U (en) | 2017-06-26 | 2017-06-26 | Mould with moving core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206869078U true CN206869078U (en) | 2018-01-12 |
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ID=61330817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720749563.XU Active CN206869078U (en) | 2017-06-26 | 2017-06-26 | Mould with moving core |
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| Country | Link |
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| CN (1) | CN206869078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433632A (en) * | 2018-03-13 | 2018-08-24 | 小狗电器互联网科技（北京）股份有限公司 | The frame structure and hand-held cleaners of hand-held cleaners |
-
2017
- 2017-06-26 CN CN201720749563.XU patent/CN206869078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108433632A (en) * | 2018-03-13 | 2018-08-24 | 小狗电器互联网科技（北京）股份有限公司 | The frame structure and hand-held cleaners of hand-held cleaners |
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