CN208634228U - A kind of easy-to-dismount sealed-bearing structure - Google Patents
A kind of easy-to-dismount sealed-bearing structure Download PDFInfo
- Publication number
- CN208634228U CN208634228U CN201821085144.1U CN201821085144U CN208634228U CN 208634228 U CN208634228 U CN 208634228U CN 201821085144 U CN201821085144 U CN 201821085144U CN 208634228 U CN208634228 U CN 208634228U
- Authority
- CN
- China
- Prior art keywords
- block
- bearing
- mounting blocks
- easy
- sealing shroud
- 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
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of easy-to-dismount sealed-bearing structures, including bearing block, bearing hole is offered on the bearing block, sealing shroud is movably installed in bearing hole, there are two the mounting blocks of vertical symmetry setting for the outside fixed installation of the sealing shroud, the side of two mounting blocks is in contact with the side of bearing block, the mounting blocks are fixedly installed with fixed block close to the side of bearing block, bearing block is opened up close to the side of mounting blocks there are two fixing groove, two fixed blocks are located in two fixing grooves, the side that two fixed blocks are located remotely from each other offers the shifting chute that side is set as opening, movable plate is slidably fitted in the shifting chute, the side that two movable plates are located remotely from each other is fixedly installed with fixture block.For the utility model convenient for dismounting to sealing shroud, when installation, can effectively ensure that the stability of sealing shroud, and when disassembly is time saving and energy saving, and structure is simple, easy to use.
Description
Technical field
The utility model relates to sealed-bearing technical field more particularly to a kind of easy-to-dismount sealed-bearing structures.
Background technique
Bearing (Bearing) is a kind of important spare part in contemporary mechanical equipment, its major function is the mechanical rotation of support
Swivel, reduces the coefficient of friction in its motion process, and guarantee its rotating accuracy, according to the difference of the friction properties of the moving elements, axis
Rolling bearing and sliding bearing two major classes can be divided by holding.Wherein rolling bearing is normalized, seriation, but with sliding bearing phase
More larger than its radial dimension, vibration and noise, price is also higher.Rolling bearing is generally by outer ring, inner ring, rolling element and holding
Four part of frame composition, by the shape of rolling element, rolling bearing is divided into ball bearing and roller bearing two major classes, and bearing due to making for a long time
With, often had in lubricating oil foreign matter entrance, when bearing runs at high speed, be easy to cause bearing damage, and the oil storage of bearing
Space cleaning is difficult, and through retrieving, the patent document of application number 201621190713.X discloses a kind of Easy opened sealed-bearing knot
Structure, including circular journal bearing seat, bearing block are equipped with bearing hole, are successively arranged oil-sealing arrangement, bearing and oil sealing baffle in bearing hole；Oil
Seal apparatus includes sealing shroud, and sealing shroud is connect with plug thread, and sealing-plug is hollow structure, is additionally provided with oil inlet on sealing-plug
And oil discharge outlet；The outer wall of sealing shroud and the inner wall clearance fit of bearing hole are sealed between sealing shroud and bearing hole by oil seal collar；
Positive stop lug boss is additionally provided on sealing shroud；Limiting device is additionally provided on bearing block；Stop collar, stop collar and limit are additionally provided on sealing shroud
Position device connection, the utility model has the characteristics that structure simply and extension bearing service life, but its sealing shroud for mentioning
Or there is installation built on the sand, dismantle inconvenient problem, therefore we have proposed a kind of easy-to-dismount sealed-bearing structures, use
To solve the above problems.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and the one kind proposed is easy-to-dismount
Sealed-bearing structure.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of easy-to-dismount sealed-bearing structure, including bearing block offer bearing hole, bearing hole on the bearing block
It is inside movably installed with sealing shroud, the outside of the sealing shroud is fixedly mounted there are two the mounting blocks of vertical symmetry setting, and two are pacified
The side of dress block is in contact with the side of bearing block, and the mounting blocks are fixedly installed with fixed block close to the side of bearing block,
Bearing block is opened up close to the side of mounting blocks there are two fixing groove, and two fixed blocks are located in two fixing grooves, and two solid
Determine the side that block is located remotely from each other and offer the shifting chute that side is set as opening, is slidably fitted with movement in the shifting chute
Plate, the side that two movable plates are located remotely from each other are fixedly installed with fixture block, on the side inner wall that two fixing grooves are located remotely from each other
Card slot is offered, fixture block is mutually clamped with corresponding card slot, and the mounting blocks offer sliding slot, movable plate close to the side of fixed block
Side extend in corresponding sliding slot, two movable plate sides close to each other are fixedly installed with rack gear, two rack gears point
Gear Wei Yu not be rotatably equipped in two sliding slots, two gears are meshed with two rack gears respectively, described in two sliding slots
Fixing groove is fluted far from opening up on the side inner wall of mounting blocks, crushing block is slidably fitted in groove, the side of crushing block is prolonged
It extends in fixing groove and is in contact with fixed block far from the side of mounting blocks, the fixed peace in side of the crushing block far from fixed block
Equipped with spring, one end of spring is mutually welded with groove far from the side inner wall of fixed block.
Preferably, the mounting blocks offer rotation hole far from the side of fixed block, and rotation hole is connected with corresponding sliding slot
It is logical, rotating bar is rotatably equipped in rotation hole, one end of rotating bar extends in sliding slot, and gear fixation is set in rotating bar.
Preferably, annular groove is offered on the inner wall of the rotation hole, the outside fixing sleeve of rotating bar is equipped with ring block, ring
The connection of the side walls of shape block and annular groove.
Preferably, the rotating bar extends to the outside of mounting blocks far from one end of fixed block and is fixedly installed with rotation
Block.
Preferably, the shifting chute is slidably installed in limiting slot far from limiting slot is offered on the side inner wall of mounting blocks
There is limited block, the side of limited block is fixedly connected with corresponding movable plate.
Preferably, it is fixedly installed with slide bar in the sliding slot, movable plate is connect with sliding bar.
Preferably, offer limiting groove in the top inner wall and bottom interior wall of the groove, the top of crushing block with
Bottom is fixedly installed with spacing block set, and spacing block set is connected with the side walls of corresponding limiting groove.
Compared with prior art, the utility model has the beneficial effects that
By mounting blocks, fixed block, fixing groove, movable plate, fixture block, card slot, rack gear, rotating bar, gear, spill spin block, squeeze
Briquetting and spring match, and when installing sealing shroud, sealing shroud is put into bearing hole, and sealing shroud is pushed to slide into bearing hole,
Until the side of two mounting blocks is contacted with bearing block, two fixed blocks are moved in two fixing grooves at this time, when two fixations
When block moves in fixing groove, fixed block will push crushing block and be moved to the direction far from mounting blocks, and crushing block can squeeze
Spring shrinks spring stress, keeps the contraction state of spring, then rotates spill spin block, by spill spin block drive rotating bar into
Row rotation is rotated by rotating bar band moving gear, is moved by gear band carry-over bar to the direction far from sealing shroud,
It is moved by rack drives movable plate, drives fixture block to snap fitted in card slot by movable plate, can be completed to sealing shroud
Installation is fixed；
When dismounting sealing sleeve, spill spin block is rotated backward, so that fixture block be made to be detached from card slot, the limit of fixed block is solved at this time
It removes, fixed block disappears to the pressure of crushing block, and crushing block disappears to the pressure of spring, and spring starts to restore to the original state, to pass through
Fixed block is released fixing groove by crushing block, finally pulls sealing shroud, separates sealing shroud with bearing block, can be completed to sealing shroud
Disassembly；
For the utility model convenient for dismounting to sealing shroud, when installation, can effectively ensure that the stability of sealing shroud, disassembly
When it is time saving and energy saving, structure is simple, easy to use.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of easy-to-dismount sealed-bearing structure structural schematic diagram；
Fig. 2 be the utility model proposes a kind of easy-to-dismount sealed-bearing structure part A structural schematic diagram.
In figure: 1 bearing block, 2 bearing holes, 3 sealing shrouds, 4 mounting blocks, 5 fixed blocks, 6 fixing grooves, 7 shifting chutes, 8 movable plates,
9 fixture blocks, 10 card slots, 11 limited blocks, 12 limiting slots, 13 sliding slots, 14 rack gears, 15 rotation holes, 16 rotating bars, 17 gears, 18 rotations
Block, 19 ring blocks, 20 annular grooves, 21 slide bars, 22 grooves, 23 crushing blocks, 24 springs, 25 limiting grooves, 26 spacing block sets.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of easy-to-dismount sealed-bearing structure, including bearing block 1 offer bearing on bearing block 1
Hole 2, is movably installed with sealing shroud 3 in bearing hole 2, and the outside of sealing shroud 3 is fixedly mounted that there are two the installations of vertical symmetry setting
Block 4, the side of two mounting blocks 4 are in contact with the side of bearing block 1, and mounting blocks 4 are fixedly mounted close to the side of bearing block 1
There is fixed block 5, bearing block 1 is opened up close to the side of mounting blocks 4 there are two fixing groove 6, and two fixed blocks 5 are located at two admittedly
Determine in slot 6, the side that two fixed blocks 5 are located remotely from each other offers the shifting chute 7 that side is set as opening, slides in shifting chute 7
Dynamic to be equipped with movable plate 8, the side that two movable plates 8 are located remotely from each other is fixedly installed with fixture block 9, and two fixing grooves 6 are mutually remote
From side inner wall on offer card slot 10, fixture block 9 is clamped with corresponding 10 phase of card slot, mounting blocks 4 close to fixed block 5 one
Side offers sliding slot 13, and the side of movable plate 8 extends in corresponding sliding slot 13, and two sides close to each other of movable plate 8 are equal
It is fixedly installed with rack gear 14, two rack gears 14 are located in two sliding slots 13, are rotatably equipped with gear in two sliding slots 13
17, two gears 17 are meshed with two rack gears 14 respectively, and fixing groove 6 is fluted far from opening up on the side inner wall of mounting blocks 4
22, crushing block 23 is slidably fitted in groove 22, the side of crushing block 23 extends in fixing groove 6 and with fixed block 5 far from peace
The side of dress block 4 is in contact, and crushing block 23 is fixedly installed with spring 24 far from the side of fixed block 5, one end of spring 24 with it is recessed
Slot 22 is mutually welded far from the side inner wall of fixed block 5, passes through mounting blocks 4, fixed block 5, fixing groove 6, movable plate 8, fixture block 9, card
Slot 10, rack gear 14, rotating bar 16, gear 17, spill spin block 18, crushing block 23 and spring 24 match, will when installing sealing shroud 3
Sealing shroud 3 is put into bearing hole 2, and sealing shroud 3 is pushed to slide into bearing hole 2, side and bearing block until two mounting blocks 4
1 contact, two fixed blocks 5 are moved in two fixing grooves 6 at this time, fixed when two fixed blocks 5 move in fixing groove 6
Block 5 will push crushing block 23 and be moved to far from the directions of mounting blocks 4, and crushing block 23 can squeeze spring 24, make spring 24 by
Power is shunk, and the contraction state of spring 24 is kept, and then rotates spill spin block 18, drives rotating bar 16 to be revolved by spill spin block 18
Turn, rotated by rotating bar 16 with moving gear 17, is carried out with carry-over bar 14 to the direction far from sealing shroud 3 by gear 17
It is mobile, it drives movable plate 8 to be moved by rack gear 14, drives fixture block 9 to snap fitted in card slot 10 by movable plate 8, it can be complete
The installation of pairs of sealing shroud 3 is fixed, and when dismounting sealing sleeve 3, rotates backward spill spin block 18, so that fixture block 9 is made to be detached from card slot 10, this
When fixed block 5 limit released, fixed block 5 disappears to the pressure of crushing block 23, and crushing block 23 disappears to the pressure of spring 24
It loses, spring 24 starts to restore to the original state, so that fixed block 5 is released fixing groove 6 by crushing block 23, finally pulls sealing shroud 3, makes
Sealing shroud 3 is separated with bearing block 1, and the disassembly to sealing shroud 3 can be completed, and the utility model is convenient for dismounting sealing shroud 3,
It can effectively ensure that the stability of sealing shroud 3 when installation, when disassembly is time saving and energy saving, and structure is simple, easy to use.
In the utility model, mounting blocks 4 offer rotation hole 15 far from the side of fixed block 5, rotation hole 15 with it is corresponding
Sliding slot 13 is connected, and rotating bar 16 is rotatably equipped in rotation hole 15, and one end of rotating bar 16 extends in sliding slot 13, gear 17
Fixation is set in rotating bar 16, annular groove 20 is offered on the inner wall of rotation hole 15, the outside fixing sleeve of rotating bar 16 is equipped with
Ring block 19, ring block 19 are connect with the side walls of annular groove 20, and rotating bar 16 extends to installation far from one end of fixed block 5
The outside of block 4 is simultaneously fixedly installed with spill spin block 18, and shifting chute 7 is limited far from limiting slot 12 is offered on the side inner wall of mounting blocks 4
It is slidably fitted with limited block 11 in the slot 12 of position, the side of limited block 11 is fixedly connected with corresponding movable plate 8, fixed in sliding slot 13
Slide bar 21 is installed, movable plate 8 is slidably connected with slide bar 21, offers limit in the top inner wall and bottom interior wall of groove 22
Groove 25, the top and bottom of crushing block 23 are fixedly installed with spacing block set 26, spacing block set 26 and corresponding limiting groove
25 side walls connection, passes through mounting blocks 4, fixed block 5, fixing groove 6, movable plate 8, fixture block 9, card slot 10, rack gear 14, rotation
Bar 16, gear 17, spill spin block 18, crushing block 23 and spring 24 match, and when installing sealing shroud 3, put sealing shroud 3 into bearing hole
In 2, sealing shroud 3 is pushed to slide into bearing hole 2, until the side of two mounting blocks 4 is contacted with bearing block 1, consolidated for two at this time
Determine block 5 to be moved in two fixing grooves 6, when two fixed blocks 5 move in fixing groove 6, fixed block 5 will push crushing block 23
It is moved to the direction far from mounting blocks 4, crushing block 23 can squeeze spring 24, make 24 forced contraction of spring, keep spring 24
Contraction state, then rotate spill spin block 18, by spill spin block 18 drive rotating bar 16 rotated, driven by rotating bar 16
Gear 17 is rotated, and is moved with carry-over bar 14 to the direction far from sealing shroud 3 by gear 17, is driven by rack gear 14
Movable plate 8 is moved, and drives fixture block 9 to snap fitted in card slot 10 by movable plate 8, it is solid that the installation to sealing shroud 3 can be completed
Calmly, when dismounting sealing sleeve 3, spill spin block 18 is rotated backward, so that fixture block 9 be made to be detached from card slot 10, the limit of fixed block 5 is obtained at this time
It releases, fixed block 5 disappears to the pressure of crushing block 23, and crushing block 23 disappears to the pressure of spring 24, and spring 24 starts to restore former
Shape finally pulls sealing shroud 3, divides sealing shroud 3 with bearing block 1 so that fixed block 5 is released fixing groove 6 by crushing block 23
It opens, can be completed the disassembly to sealing shroud 3, convenient for dismounting to sealing shroud 3, when installation can effectively ensure that the utility model
The stability of sealing shroud 3, when disassembly, are time saving and energy saving, and structure is simple, easy to use.
Working principle: in use, when installation sealing shroud 3, sealing shroud 3 is put into bearing hole 2, pushes sealing shroud 3 to axis
Sliding in bearing bore 2, until the side of two mounting blocks 4 is contacted with bearing block 1, two fixed blocks 5 are moved to two fixations at this time
In slot 6, when two fixed blocks 5 move in fixing groove 6, fixed block 5 will push crushing block 23 to the direction far from mounting blocks 4
It is moved, crushing block 23 can squeeze spring 24, make 24 forced contraction of spring, keep the contraction state of spring 24, then rotate
Spill spin block 18 drives rotating bar 16 to be rotated, is rotated, passed through with moving gear 17 by rotating bar 16 by spill spin block 18
Gear 17 is moved with carry-over bar 14 to the direction far from sealing shroud 3, is driven movable plate 8 to be moved by rack gear 14, is led to
Crossing movable plate 8 drives fixture block 9 to snap fitted in card slot 10, can be completed and fixes to the installation of sealing shroud 3；
When dismounting sealing sleeve 3, spill spin block 18 is rotated backward, so that fixture block 9 be made to be detached from card slot 10, the at this time limit of fixed block 5
Position is released, and fixed block 5 disappears to the pressure of crushing block 23, and crushing block 23 disappears to the pressure of spring 24, and spring 24 starts
It restores to the original state, so that fixed block 5 is released fixing groove 6 by crushing block 23, finally pulls sealing shroud 3, make sealing shroud 3 and bearing
Seat 1 separates, and the disassembly to sealing shroud 3 can be completed.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. a kind of easy-to-dismount sealed-bearing structure, including bearing block (1), bearing hole is offered on the bearing block (1)
(2), sealing shroud (3) are movably installed in bearing hole (2), which is characterized in that be fixedly installed with two on the outside of the sealing shroud (3)
The mounting blocks (4) of a vertical symmetry setting, the side of two mounting blocks (4) are in contact with the side of bearing block (1), the peace
Dress block (4) is fixedly installed with fixed block (5) close to the side of bearing block (1), and bearing block (1) is opened close to the side of mounting blocks (4)
If two fixed blocks (5) are located in two fixing grooves (6), and two fixed blocks (5) are located remotely from each other there are two fixing groove (6)
Side offer the shifting chute (7) that side is set as opening, is slidably fitted with movable plate (8) in the shifting chute (7), two
The side that a movable plate (8) is located remotely from each other is fixedly installed with fixture block (9), the side inner wall that two fixing grooves (6) are located remotely from each other
On offer card slot (10), fixture block (9) is mutually clamped with corresponding card slot (10), and the mounting blocks (4) are close to fixed block (5)
Side offers sliding slot (13), and the side of movable plate (8) extends in corresponding sliding slot (13), and two movable plates (8) are mutually leaned on
Close side is fixedly installed with rack gear (14), and two rack gears (14) are located in two sliding slots (13), two sliding slots (13)
It is inside rotatably equipped with gear (17), two gears (17) are meshed with two rack gears (14) respectively, and the fixing groove (6) is separate
It opens up fluted (22), is slidably fitted with crushing block (23) in groove (22), crushing block (23) on the side inner wall of mounting blocks (4)
Side extend in fixing groove (6) and be in contact with fixed block (5) far from the side of mounting blocks (4), the crushing block (23)
Side far from fixed block (5) is fixedly installed with spring (24), and one end and groove (22) of spring (24) are far from fixed block (5)
Side inner wall mutually welds.
2. a kind of easy-to-dismount sealed-bearing structure according to claim 1, which is characterized in that the mounting blocks (4)
Side far from fixed block (5) offers rotation hole (15), and rotation hole (15) is connected with corresponding sliding slot (13), rotation hole
(15) it is rotatably equipped with rotating bar (16) in, one end of rotating bar (16) extends in sliding slot (13), and gear (17) fixation is arranged
On rotating bar (16).
3. a kind of easy-to-dismount sealed-bearing structure according to claim 2, which is characterized in that the rotation hole (15)
Inner wall on offer annular groove (20), the outside fixing sleeve of rotating bar (16) is equipped with ring block (19), ring block (19) and ring
The side walls of shape slot (20) connect.
4. a kind of easy-to-dismount sealed-bearing structure according to claim 2, which is characterized in that the rotating bar (16)
One end far from fixed block (5) extends to the outside of mounting blocks (4) and is fixedly installed with spill spin block (18).
5. a kind of easy-to-dismount sealed-bearing structure according to claim 1, which is characterized in that the shifting chute (7)
It offers limiting slot (12) on side inner wall far from mounting blocks (4), is slidably fitted with limited block (11) in limiting slot (12), limited
The side of position block (11) is fixedly connected with corresponding movable plate (8).
6. a kind of easy-to-dismount sealed-bearing structure according to claim 1, which is characterized in that in the sliding slot (13)
It is fixedly installed with slide bar (21), movable plate (8) is slidably connected with slide bar (21).
7. a kind of easy-to-dismount sealed-bearing structure according to claim 1, which is characterized in that the groove (22)
It is offered limiting groove (25) in top inner wall and bottom interior wall, the top and bottom of crushing block (23) is fixedly mounted limited
Position convex block (26), spacing block set (26) are connected with the side walls of corresponding limiting groove (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085144.1U CN208634228U (en) | 2018-07-10 | 2018-07-10 | A kind of easy-to-dismount sealed-bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821085144.1U CN208634228U (en) | 2018-07-10 | 2018-07-10 | A kind of easy-to-dismount sealed-bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634228U true CN208634228U (en) | 2019-03-22 |
Family
ID=65735928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821085144.1U Active CN208634228U (en) | 2018-07-10 | 2018-07-10 | A kind of easy-to-dismount sealed-bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855751A (en) * | 2021-02-01 | 2021-05-28 | 曾秀 | Bearing capable of replacing parts conveniently and quickly |
-
2018
- 2018-07-10 CN CN201821085144.1U patent/CN208634228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855751A (en) * | 2021-02-01 | 2021-05-28 | 曾秀 | Bearing capable of replacing parts conveniently and quickly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208634228U (en) | A kind of easy-to-dismount sealed-bearing structure | |
| CN208331668U (en) | A kind of height-adjustable monitoring device | |
| CN204419636U (en) | A kind of centrifugal exhibition blade fan | |
| CN109630689A (en) | A kind of novel power-assisted cut-off device valve | |
| CN203978250U (en) | A kind of roller shutter reducer | |
| CN204384637U (en) | The automatic retracted speed reduction gearing of tube coiling appts | |
| CN102588651B (en) | Drainage tractor for washing machine | |
| CN208431161U (en) | A kind of screw air compressor being conveniently replaceable bearing | |
| CN103711863A (en) | Mold bar push-out mechanism in capsule production system | |
| CN208487525U (en) | A kind of intelligent lamp being easily installed | |
| CN108187919B (en) | Double test tube automatically regulated centrifuge based on gear drive | |
| CN113048211A (en) | Electromechanical telescopic control mechanism | |
| CN209340535U (en) | A kind of Manual safety valve | |
| CN207762403U (en) | A kind of chemical industry equipment having combination dismounting function | |
| CN210137241U (en) | Oil extraction pumping unit motor fixing device | |
| CN203604565U (en) | Mold strip ejecting mechanism in capsule production system | |
| CN109138738A (en) | The window frame of magnetic dust removal | |
| CN209028302U (en) | A kind of big times of binoculars for scenic spot | |
| CN201965021U (en) | Testing device for service life of sealing ring | |
| CN207647721U (en) | One kind being used for the fixed loop configuration card slot of compressor base frame | |
| CN207906837U (en) | A kind of butter feeding device for Production of bearing | |
| CN214344830U (en) | Production facility with filtering capability | |
| CN208348309U (en) | A kind of Easy opened sealed-bearing structure | |
| CN209627589U (en) | A kind of intelligent sound box mounting base in adjustable direction | |
| CN108478949B (en) | Escape slide bar based on gear speed change |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |