CN109826856A - Quick-detachable lock and interlayer connection structure - Google Patents
Quick-detachable lock and interlayer connection structure Download PDFInfo
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- CN109826856A CN109826856A CN201910291032.4A CN201910291032A CN109826856A CN 109826856 A CN109826856 A CN 109826856A CN 201910291032 A CN201910291032 A CN 201910291032A CN 109826856 A CN109826856 A CN 109826856A
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Abstract
The present invention relates to interlayer quick-release connection area, in particular to a kind of quick-detachable lock and interlayer connection structure.The interlayer connection structure includes quick-detachable lock and the base layer to quick-detachable lock locking, mobile layer, the quick-detachable lock includes lock body and lock, lock body includes lock disk and pinning, pinning is equipped with locking head close to one end of lock, lock is equipped with perforates with the locking head of locking head shape adaptation, locking head is close on the side of lock disk and lock is equipped with the stopping surface of adaptation backwards to the side of lock disk, the part of pinning being located on the outside of lock disk is equipped with block machine, and flexible washer is equipped between block machine and lock disk；The stopping surface of lock is equipped with the card slot being embedded in for locking head when the quick-detachable lock is locked, and the compressible amount of washer is not less than the slot bottom of card slot to the spacing of notch.The interlayer connection structure can be used for solving the problems, such as that the quick-detachable lock anti-loose structure in interlayer connection structure in the prior art is complicated, occupied space is big.
Description
Technical field
The present invention relates to interlayer quick-release connection area, in particular to a kind of quick-detachable lock and interlayer connection structure.
Background technique
Need to be arranged the component that the needs such as watch window, maintenance lid, removable siding often dismount on some devices, in order to
Easy to disassemble, the installation of these components does not usually use threaded fastener to connect, but by special interlayer connection structure come
Realize connection, interlayer connection structure generally comprises quick-detachable lock, further includes the base layer locked to quick-detachable lock, mobile layer, observation window
The components such as mouth, maintenance lid, removable siding correspond to mobile layer, and the structure for being used to install above-mentioned component on device corresponds to base layer.
It is just disclosed in the Chinese invention patent application file that application publication number is CN102425591A a kind of with spring
The quick-detachable lock of device, the quick-detachable lock include lock body and lock, and lock body includes lock disk and the pinning that is inserted into lock disk, lock
Disk is equipped with the central through hole passed through for pinning, is provided with the border of a protrusion around central through hole on lock disk, border
Spring is installed, spring is sleeved on pinning simultaneously, and one end of pinning is equipped with pyramidal structure, the pyramidal knot in central through hole
Structure is the locking head of pinning, and the length and width of locking head are unequal；Lock includes down lock body and Clip Reed, and down lock body is installed on circlip
In piece, the center of Clip Reed and down lock body is equipped with through-hole corresponding with the central through hole of lock disk, logical in lock
Below hole two sides be additionally provided with semicircle inclined-plane so that shape of through holes and locking head in lock shape adaptation, it is logical in the lock
Hole is that the locking head passed through for locking head is perforated；Clip Reed has two relatively spaced elastic slices, the septal direction of two elastic slices
It is identical as the length direction of the through-hole in lock.The quick-detachable lock is in use, lock disk is fixed with mobile layer, by lock and matrix
Layer is fixed, and pinning is inserted into and is pushed by the through-hole along lock body and lock, and pinning needs to strut two when passing through the through-hole on lock
Elastic slice can just pass through, and when the locking head of pinning passes through lock, pinning be rotated clockwise 90 °, two elastic slices being softened
Locking head is resetted and compresses, the upper surface of the locking head of pinning is by the lower end surface block of down lock body at this time, to realize mobile layer
With the locking of base layer, the upper surface of locking head is the stopping surface of locking head, and the lower end surface of down lock body is the stopping surface of lock；Together
When, elastic slice, which compresses locking head, to prevent pinning from turning round, so as to realize the locking of the quick-detachable lock.
Above-mentioned quick-detachable lock can be realized the locking of mobile layer and base layer, and the anti-of quick-detachable lock is realized by Clip Reed
Pine, still, the structure of Clip Reed are complex, and occupied space is larger, and the size that will lead to entire quick-detachable lock in this way is larger.
Summary of the invention
The object of the present invention is to provide a kind of quick-detachable locks, and for solving in the prior art, quick-detachable lock anti-loose structure is complicated, accounts for
With the big problem in space；The present invention also provides a kind of interlayer connection structures, for solving in interlayer connection structure in the prior art
Quick-detachable lock anti-loose structure is complicated, problem that occupied space is big.
To achieve the above object, quick-detachable lock provided by the present invention uses following technical scheme:
The quick-detachable lock includes lock body and lock, and lock body includes lock disk and pinning, and pinning is equipped with locking head close to one end of lock,
Lock is equipped with perforates with the locking head of locking head shape adaptation, and locking head is close on the side of lock disk and lock is backwards to lock
The side of disk is equipped with the stopping surface of adaptation, and the part of pinning being located on the outside of lock disk is equipped with block machine, block machine and lock disk
Between be equipped with flexible washer；The stopping surface of lock is equipped with the card slot being embedded in for locking head when the quick-detachable lock is locked,
The compressible amount of washer is not less than the slot bottom of card slot to the spacing of notch.
The beneficial effect of quick-detachable lock provided by the present invention is: flexible washer, lock are provided in the quick-detachable lock
Stopping surface be equipped with the card slot in quick-detachable lock locking for locking head insertion, and the compressible amount of washer is not less than card slot
Slot bottom, if wanting to deviate from out of card slot, needs to press to the spacing of notch after setting can guarantee locking head in insertion card slot in this way
Contracting washer, and the compression of washer needs biggish active force, so that the elasticity using washer prevents locking head from deviating from out of card slot,
And then realize the locking of the quick-detachable lock, and the structure of washer is relatively simple, occupied space is less, not will increase and uses the quick-release
Interlayer connection structure the space occupied of lock.
Further, washer is in horn-like.The washer of horn-like structure is on the basis of guaranteeing gasket thickness, it is possible to reduce
The usage amount of gasket materials, so as to save cost.
Further, pinning is equipped with pinning head far from one end of lock, and pinning head constitutes block machine.Gear is constituted by pinning head
Platform, structure is simple, easy to process.
Further, major diameter section and path section, major diameter section are successively arranged along the direction of pinning head towards locking head on pinning
It is equipped between lock disk for applying the spring towards the active force on the outside of lock disk to pinning.Major diameter section and path are set
Section, convenient for the installation of spring；And spring applies towards the active force on the outside of lock disk pinning, can make this fast with Passscheiben
The locking for unloading lock is stronger, and anti-loosing effect is stronger.
Further, pinning head and major diameter section are integrally formed, and path section and locking head are integrally formed, and path section is far from locking
One end of head is equipped with external screw thread, and major diameter section is equipped with matched internal screw thread far from one end of pinning head, and major diameter section and path section pass through
It is threadedly coupled.Entire pinning is divided into two parts, processing easy to produce；Major diameter section and path section are connected through a screw thread, and facilitate reality
It is existing.
Further, lock disk is equipped with the external screw thread for being threadedly coupled with the mobile layer wait lock in interlayer.Pass through
The mode of threaded connection realizes that the installation of lock disk and mobile layer is fixed, and mounting structure is relatively simple, convenient for production, installation side
Just.
Further, lock disk is equipped with far from one end of lock for when lock disk to be mounted in mobile layer and movable
The flange of layer block.Flange is set, guarantees flange when with mobile layer block, lock disk is already mounted to setting position, keeps away
Exempt from the case where lock disk is not mounted to setting position and quick-detachable lock is caused not to be available occur.
Further, pinning far from locking head one end be equipped with handle, handle have for user finger pass through so as to
In the avoiding space of palm force.Handle is set, the active force for deforming washer can be applied to pinning convenient for user and is made
Pinning rotation.
Further, lock is equipped with the external screw thread for being threadedly coupled with the base layer wait lock in interlayer.Pass through spiral shell
The mode of line connection realizes that the installation of lock and base layer is fixed, and mounting structure is relatively simple, convenient for production, easy for installation.
Interlayer connection structure provided by the present invention uses following technical scheme:
The interlayer connection structure include quick-detachable lock and to quick-detachable lock locking base layer, mobile layer, the quick-detachable lock include lock body and
Lock, lock body include lock disk and pinning, and pinning is equipped with locking head close to one end of lock, and lock is equipped with and locking head shapes
The locking head of adaptation is perforated, and locking head is close on the side of lock disk and lock is equipped with the gear of adaptation backwards to the side of lock disk
The part being located on the outside of lock disk in only face, pinning is equipped with block machine, and flexible washer is equipped between block machine and lock disk；
The stopping surface of lock is equipped with the card slot being embedded in for locking head when the quick-detachable lock is locked, and the compressible amount of washer is not less than card slot
Slot bottom to notch spacing.
The beneficial effect of interlayer connection structure provided by the present invention is: the quick-detachable lock in the interlayer connection structure is provided with
Flexible washer, the stopping surface of lock are equipped with the card slot in quick-detachable lock locking for locking head insertion, and washer
Compressible amount is not less than the slot bottom of card slot to the spacing of notch, is arranged after can guaranteeing locking head in insertion card slot in this way, if
Want to deviate from out of card slot, needs compression washer, and the compression of washer needs biggish active force, so that the elasticity using washer is anti-
Only locking head is deviate from out of card slot, and then realizes the locking of the quick-detachable lock, and the structure of washer is relatively simple, occupied space compared with
It is few, it not will increase interlayer connection structure the space occupied.
Further, washer is in horn-like.The washer of horn-like structure is on the basis of guaranteeing gasket thickness, it is possible to reduce
The usage amount of gasket materials, so as to save cost.
Further, pinning is equipped with pinning head far from one end of lock, and pinning head constitutes block machine.Gear is constituted by pinning head
Platform, structure is simple, easy to process.
Further, major diameter section and path section, major diameter section are successively arranged along the direction of pinning head towards locking head on pinning
It is equipped between lock disk for applying the spring towards the active force on the outside of lock disk to pinning.Major diameter section and path are set
Section, convenient for the installation of spring；And spring applies towards the active force on the outside of lock disk pinning, can make this fast with Passscheiben
The locking for unloading lock is stronger, and anti-loosing effect is stronger.
Further, pinning head and major diameter section are integrally formed, and path section and locking head are integrally formed, and path section is far from locking
One end of head is equipped with external screw thread, and major diameter section is equipped with matched internal screw thread far from one end of pinning head, and major diameter section and path section pass through
It is threadedly coupled.Entire pinning is divided into two parts, processing easy to produce；Major diameter section and path section are connected through a screw thread, and facilitate reality
It is existing.
Further, lock disk is threadedly coupled with mobile layer.The mode being connected through a screw thread realizes lock disk and mobile layer
Installation fix, mounting structure is relatively simple, convenient for production, easy for installation.
Further, lock disk is equipped with far from one end of lock for when lock disk to be mounted in mobile layer and movable
The flange of layer block.Flange is set, guarantees flange when with mobile layer block, lock disk is already mounted to setting position, keeps away
Exempt from the case where lock disk is not mounted to setting position and quick-detachable lock is caused not to be available occur.
Further, pinning is equipped with handle far from one end of locking head, and there is the handle finger for user to pass through
In order to the avoiding space of palm force.Handle is set, the active force for deforming washer can be applied to pinning convenient for user
With rotate pinning.
Further, lock is threadedly coupled with fixed structure.The mode being connected through a screw thread realizes lock and base layer
Installation is fixed, and mounting structure is relatively simple, convenient for production, easy for installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of interlayer connection structure provided by the present invention；
Fig. 2 is the explosive view of the quick-detachable lock in the embodiment of interlayer connection structure provided by the present invention；
Fig. 3 is the structural schematic diagram of the lock of the quick-detachable lock in the embodiment of interlayer connection structure provided by the present invention；
Fig. 4 is the structural schematic diagram of the pinning of the quick-detachable lock in the embodiment of interlayer connection structure provided by the present invention.
In attached drawing: 1- mobile layer, 2- base layer, 3- quick-detachable lock, 31- lock disk, 32- lock, 33- pinning, 34- washer,
35- spring, 36- handle, 311- disk body, 312- flange, 321- pedestal, 322- flange, the perforation of 323- locking head, 331- major diameter
Section, 332- path section, 333- locking head, 334- pinning head, 3211- lock stopping surface, 3212- card slot, 3213- blocking portion,
3221- flat recess, 3331- locking head stopping surface.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.
The embodiment of interlayer connection structure provided by the present invention:
As shown in Figure 1, the interlayer connection structure includes mobile layer 1, base layer 2 and the quick-release for locking mobile layer 1 and base layer 2
Lock 3.
Mobile layer 1 is defined upper, base layer 2 is under, and defined herein " upper and lower " concept is only in this specification just
In statement, the upside that mobile layer 1 in actual use is scheduled on base layer 2 is not represented, during actual use, it is also possible to
Mobile layer 1 under, base layer 2 upper perhaps mobile layer 1 be distributed with base layer 2 or so or mobile layer 1 and base layer 2 its
His spatial relation is within the scope of protection of this application.
As depicted in figs. 1 and 2, quick-detachable lock 3 includes lock body and lock 32, and lock body includes lock disk 31 and pinning 33, lock
Disk 31 includes the disk body 311 being threadedly coupled with mobile layer 1 and the flange 312 positioned at 311 top of disk body, the outer peripheral surface of disk body 311
It is equipped with external screw thread, the position of corresponding installation lock disk 31 is equipped with matched threaded hole in mobile layer 1, by 31 screw thread of lock disk
After being assemblied in mobile layer 1, in the connecting portion gluing of the two, to prevent the two from loosening；After lock disk 31 is installed in place, method
The lower end surface of orchid 312 is contacted with the upper surface of mobile layer 1, and flange 312 is arranged, is to guarantee that flange 312 connects with mobile layer 1
When touching, lock disk 31 is already mounted to setting position；Lock disk 31 is equipped with central through hole, to be used to pass through for pinning 33,
Central through hole is upper coarse and lower fine stepped hole.
As shown in Figure 1, Figure 2 and Figure 4, the path section 332 of pinning 33 including top major diameter section 331 and on the lower, major diameter section
331 and the mode that is connected through a screw thread of path section 332 be fixed together；It is equipped with locking head 333 in the lower end of path section 332,
It is short transverse that it is axial along path section 332, which to define locking head 333, and the length and width of locking head 333 are unequal, path section 332
It is integrally formed with locking head 333；The top of major diameter section 331 be equipped with pinning head 334, major diameter section 331 and the one of pinning head 334 at
Type, the diameter of pinning head 334 are greater than the diameter of major diameter section 331 so that pinning head 334 have downward and it is radially projecting in
The end face of major diameter section 331.
As depicted in figs. 1 and 2, a handle 36 is installed on the pinning head 334 of pinning 33, handle 36 is D-shaped, handle
36 segmental arc is located at top, the straightway of handle 36 be located at lower part and with 334 rolling assembling of pinning head, the handle of D-shaped is set
36 can exert a force to pinning convenient for user, and the hollow position of handle 36 constitutes avoiding space.
As shown in Figure 1, Figure 2 and Figure 3, lock 32 includes pedestal 321, and the outer peripheral surface of pedestal 321 is equipped with external screw thread, matrix
The position that lock 32 is installed on layer 2 is equipped with matched threaded hole, and the mode that lock 32 is connected through a screw thread is fixedly mounted on matrix
On layer 2, connection between the two loosens in order to prevent, can be in junction gluing；It is equipped with flange 322 in the upper end of pedestal 321,
Flange 322 is upper coarse and lower fine and outer peripheral surface is circular conical surface, and setting flange 322 is in order to carry out axial limiting to lock 32, in flange
322 with 2 block of base layer when be considered as lock 32 and be installed in place；The upper surface of flange 322 is equipped with a flat recess 3221, flat recess
3221 for cooperating matched screwdriver to realize the installation of lock 32；In lock 32 be equipped with passed through for locking head 333 and with
The locking head perforation 323 of 333 shape adaptation of locking head, locking head 333 passes through locking head perforation 323 to the quick-detachable lock 3 when in use.
Shown in as shown in Figure 1, Figure 3 and Figure 4, the upper surface of locking head 333 forms the locking head stopping surface 3331 of locking head 333,
The hole of the locking head perforation 323 of 32 lower part of lock is along lock stopping surface 3211 is formed, from the upward concave shape of lock stopping surface 3211
At two card slots 3212, the two sides of two separation locking heads 323 length extending directions of perforation of card slots 3212, two card slots 3212 exist
Locking head 333 stretches out locking head perforation 323 and is embedded in after being rotated by 90 ° for locking head 333；The card slot on lock stopping surface 3211
3212 side is equipped with downwardly projecting blocking portion 3213, and blocking portion 3213 can not be embedded in for preventing pinning 33 from rotating excessively
In card slot 3212.
As depicted in figs. 1 and 2, a spring is set in the path section 332 in the central through hole for protruding into lock disk 31
35, the upper end of spring 35 and the lower end surface of major diameter section 331 press and cooperate, under the lower end of spring 35 and the central through hole of lock disk 31
The upper end hole in the thinner hole in portion is along press cooperation.
As depicted in figs. 1 and 2, a flexible washer 34 is set in the major diameter section 331 of pinning 33, washer
Material is rubber, and washer 34 is up-small and down-big in horn-like, the upper surface of washer 34 and the lower end face contact of pinning head 334, washer
The upper end face contact of 34 lower end surface and the flange 312 of lock disk 31, pinning head 334 constitute block machine；Washer 34 is used for the quick-release
That locks is locking, and the compressible amount of washer 34 is not less than the slot bottom of card slot 3212 to the spacing of notch.
Lock 32 in use, be mounted on base layer 2, then by the path section of pinning 33 by the interlayer connection structure first
332 pass through the central through hole of lock disk 31 from bottom to top, and then successively spring 35, washer 34 are sleeved in path section 332, then
By major diameter section 331 together with 332 Screw assembly of path section, finally lock disk 31 is fixed in mobile layer 1, is so far completed fast
Unload the assembling of lock and the fixation of quick-detachable lock and mobile layer 1 and base layer 2；When needing to lock mobile layer 1 and base layer 2, make
User presses down on pinning 33 by handle 36, and washer 34 and spring 35 can be compressed, the locking head stopping surface on locking head 333
3331 is downwardly projecting in lock stopping surface 3211, then rotates clockwise 90 ° of corresponding card slots 3212, pinning 33 is in washer 34 and bullet
It is moved up under the elastic force effect of spring 35, locking head 333 enters in card slot 3212, and the locking head 333 into card slot 3212 relies on
The elasticity of washer 34 and spring 35 and be not easy to deviate from out of card slot 3212, so far complete mobile layer 1 and base layer 2 locking.
In above-described embodiment, block machine is made of pinning head.In other embodiments, block machine is also possible to be located at outside lock disk
The radially projecting part-structure in pinning part of side is formed.
Major diameter section and path section, the upper surface of spring and the lower end surface of major diameter section are provided in above-described embodiment, on pinning
Press cooperation.In other embodiments, pinning can also be not provided with major diameter section, be arranged in major diameter section lower end surface corresponding position convex
Edge, spring and flange press cooperate.
In above-described embodiment, pinning head and the integrated molding of major diameter section, path section and locking head are integrally formed.In other implementations
In example, then pinning head and major diameter section can also be together by a threaded connection with split settings, and locking head and path section can also be with
Split settings are equally together by a threaded connection.
In above-described embodiment, a spring is set on pinning.In other embodiments, spring can also be not provided with.
In above-described embodiment, a flange is equipped on the top of lock disk in order to which lock disk is mounted on setting position.
In other embodiments, it can also be not provided with flange, but it is noted that answered when lock disk to be mounted in mobile layer
Guarantee that final lock disk is mounted on setting position.
In above-described embodiment, washer is provided with one.In other embodiments, two or more, root also can be set in washer
It is arranged according to actual needs.In above-described embodiment, washer is in horn-like, and in other embodiments, washer is also possible to other
Shape, such as circular, washer can also be using the elastic washer or spring washer in standard component.
In above-described embodiment, lock disk is fixed with the mode that mobile layer is connected through a screw thread.In other embodiments, lock
The disk mobile layer that can also get along well is fixed, and the position of installation lock disk only opens up a unthreaded hole, and lock disk is placed in unthreaded hole, is being locked
The fixation of lock disk is realized while nail and lock locking.
In above-described embodiment, lock is fixed with the mode that base layer is connected through a screw thread.In other embodiments, lock
Can be fixed by other means with base layer, the ear that extends radially outwardly such as is set in the upper end of lock, by ear with
The form of base layer riveting realizes the fixation of lock.
In above-described embodiment, handle is provided on the pinning head of pinning.In other embodiments, handle can also be not provided with
Hand only operates when locking mobile layer and base layer more difficult.
In above-described embodiment, handle is D-shaped.In other embodiments, handle is also possible to other shapes, such as annular.
The present invention also provides a kind of quick-detachable lock, the structure phase of the quick-detachable lock and the quick-detachable lock in above-mentioned interlayer connection structure
Together, details are not described herein again.
Claims (10)
1. quick-detachable lock, including lock body and lock, lock body includes lock disk and pinning, and pinning is equipped with locking close to one end of lock
Head, lock is equipped with perforates with the locking head of locking head shape adaptation, and locking head is close on the side of lock disk with lock backwards
The side of lock disk is equipped with the stopping surface of adaptation, it is characterised in that: sets on the part of the pinning being located on the outside of lock disk
There is block machine, flexible washer is equipped between block machine and lock disk；The stopping surface of lock is equipped with for locking head in the quick-release
The card slot being embedded in when lock locking, the compressible amount of the washer are not less than the slot bottom of the card slot to the spacing of notch.
2. quick-detachable lock according to claim 1, it is characterised in that: the washer is in horn-like.
3. quick-detachable lock according to claim 1 or 2, it is characterised in that: the pinning is equipped with pinning far from one end of lock
Head, the pinning head constitute the block machine.
4. quick-detachable lock according to claim 3, it is characterised in that: on pinning along pinning head towards the direction of locking head successively
It is equipped with equipped with major diameter section and path section, between the major diameter section and lock disk for applying pinning towards the work on the outside of lock disk
Spring firmly.
5. quick-detachable lock according to claim 4, it is characterised in that: pinning head and major diameter section are integrally formed, path section and lock
Tight first body formed, path section is equipped with external screw thread far from one end of locking head, and major diameter section is equipped with mating far from one end of pinning head
Internal screw thread, major diameter section and path section are connected through a screw thread.
6. quick-detachable lock according to claim 1 or 2, it is characterised in that: the lock disk is equipped with for pressing from both sides with wait lock
The external screw thread that mobile layer in layer is threadedly coupled.
7. quick-detachable lock according to claim 4, it is characterised in that: the lock disk far from lock one end be equipped with for
When lock disk is mounted in mobile layer with the flange of mobile layer block.
8. quick-detachable lock according to claim 1 or 2, it is characterised in that: the pinning is equipped with handle far from one end of locking head
There is the finger for user to pass through the avoiding space to exert a force in order to palm for hand, the handle.
9. quick-detachable lock according to claim 1 or 2, it is characterised in that: the lock be equipped with for interlayer to be locked
In base layer be threadedly coupled external screw thread.
10. interlayer connection structure, base layer, mobile layer including quick-detachable lock and to quick-detachable lock locking, it is characterised in that: described fast
Unloading lock is quick-detachable lock of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291032.4A CN109826856A (en) | 2019-04-11 | 2019-04-11 | Quick-detachable lock and interlayer connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291032.4A CN109826856A (en) | 2019-04-11 | 2019-04-11 | Quick-detachable lock and interlayer connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN109826856A true CN109826856A (en) | 2019-05-31 |
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ID=66874463
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910291032.4A Pending CN109826856A (en) | 2019-04-11 | 2019-04-11 | Quick-detachable lock and interlayer connection structure |
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| CN110610582A (en) * | 2019-08-26 | 2019-12-24 | 南通通博设备安装工程有限公司 | Embedded open hydraulic alarm device and installation method thereof |
| CN110985501A (en) * | 2019-12-31 | 2020-04-10 | 浙江海默精工科技有限公司 | Circular quick hasp |
| CN111843913A (en) * | 2020-08-26 | 2020-10-30 | 中国航空工业集团公司济南特种结构研究所 | A auxiliary device for antenna house dismouting |
| CN112827271A (en) * | 2020-12-29 | 2021-05-25 | 四川万方空调净化设备有限公司 | Installation device for filter element of filter |
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