CN104373425A - Locking device and access cover with same - Google Patents
Locking device and access cover with same Download PDFInfo
- Publication number
- CN104373425A CN104373425A CN201410615448.4A CN201410615448A CN104373425A CN 104373425 A CN104373425 A CN 104373425A CN 201410615448 A CN201410615448 A CN 201410615448A CN 104373425 A CN104373425 A CN 104373425A
- Authority
- CN
- China
- Prior art keywords
- locking
- hole
- locking device
- lock bolt
- stationary axle
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 230000002265 prevention Effects 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000010985 leather Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009408 flooring Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0216—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable
- F16B5/0225—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable allowing for adjustment parallel to the plane of the plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/24—Superstructure sub-units with access or drainage openings having movable or removable closures; Sealing means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Clamps And Clips (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a locking device and an access cover with the locking device. The locking device comprises a locking bolt, a locking clamping board and a hollow fixing shaft with a through hole, a seam allowance is arranged at one end of the through hole, a rotation stopping portion extending in the axial direction is arranged at the other end of the through hole, the head portion of the locking bolt abuts against the seam allowance, a screw rod of the locking bolt penetrates through the through hole and is in threaded connection with the locking clamping board, and the locking clamping board is provided with a rotation limiting portion used for abutting against the rotation stopping portion so as to prevent the locking clamping board from rotating relative to the hollow fixing shaft. The locking device has the advantages of being simple in structure, convenient to operate, firm, reliable, good in universality and the like. The access cover comprises an access hole steel board, a cover board and the locking device, and has the advantages of being simple in structure, convenient to operate, firm, reliable, good in universality, capable of preventing floor leather from being damaged, and the like.
Description
Technical field
The present invention relates to locking device, particularly relate to a kind of locking device and access cover thereof.
Background technique
In prior art, the main means of fixation of access cover is that screw thread is fixed, as Inspection and Repair of Passenger Cars lid, by offering tapped hole on the steel plate at access hole four angles, then the access cover with perforate is fixed by bolt and access hole steel plate screw thread, this means of fixation is adopted to exist following not enough: one, to adopt bolt to fix, need repeatedly to tighten bolt, complex operation, cause access cover fixing inconvenient, open also inconvenient, need first to unclamp multiple bolt, and multi-pass operation also can cause bolt looseness, cause access cover fixing not firm; Two, the perforate on access cover need coordinate with the tapped hole on steel plate, but is difficult to ensure due to machining accuracy, and the position of opening of access cover more easily exists deviation, causes the access cover of same specification can not be general; Three, the bolt head of fixing bolt owing to using is less, and it is less with the fitting surface of flooring laminate, extrudes flooring laminate for a long time, not only can extrude very dark vestige at flooring laminate, and easily causes flooring laminate breakage.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provides a kind of structure is simple, easy to operate, solid and reliable, versatility is good locking device and access cover thereof.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of locking device, comprise lock bolt, lock clamp and be provided with the hollow stationary axle of through hole, described through hole one end is provided with seam, the other end is provided with axially extended rotation prevention portion, head and the described seam of described lock bolt offset, the screw rod of described lock bolt is threaded with described locking clamp through through hole, and described locking clamp is provided with for offseting with rotation prevention portion the rotary spacing portion that stops described locking clamp to rotate relative to described hollow stationary axle.
Further improvement as technique scheme:
Described hollow stationary axle is arranged with clamping nut, and the outer peripheral surface of described hollow stationary axle is provided with the outside thread with described clamping nut screw connection.
The head of described hollow stationary axle is provided with nut, is provided with cushion block between described nut and described clamping nut.
The head of described lock bolt is set to hexagon socket head.
The screw rod of described lock bolt is arranged with spring, is provided with radial bump in described through hole, described spring one end is against the lower end surface of described radial bump, and the other end is against the upper-end surface of described locking clamp.
The afterbody of described lock bolt is provided with the stop nut preventing described locking clamp from departing from lock bolt.
A kind of access cover, comprise access hole steel plate and cover the cover plate be located on described access hole, described access cover also wraps the locking device stated, described cover plate is provided with mounting hole, the lower end of described hollow stationary axle is through described mounting hole, described mounting hole place is fixed in the upper end of described hollow stationary axle, and described locking clamp is positioned at immediately below described access hole steel plate.
Further improvement as technique scheme:
The upper end of described hollow stationary axle clamps described cover plate by clamping nut and nut.
Compared with prior art, the invention has the advantages that:
(1) locking device of the present invention, comprise lock bolt, locking clamp and the hollow stationary axle being provided with through hole, through hole one end is provided with seam, the other end is provided with axially extended rotation prevention portion, head and the seam of lock bolt offset, the screw rod of lock bolt is threaded with locking clamp through through hole, locking clamp is provided with for offseting to stop with rotation prevention portion the rotary spacing portion locking clamp and rotate relative to hollow stationary axle, hollow stationary axle to be locked part relative fixing with first part that is locked through first, the position of adjustment locking device with locking clamp is placed on second be locked part below and deviate from second in the horizontal direction and to be locked part, then lock bolt is rotated forward, locking clamp is gone to second to be locked immediately below part, now, rotary spacing portion rotates to rotation prevention portion and leans with rotation prevention portion, make locking clamp cannot continue to rotate relative to hollow stationary axle, after this, continuing rotational lock bolt will make locking clamp rise along lock bolt, the part that is locked with second is gradually close until fit, realize first part and second that is locked to be locked the locking of part, when first be locked part and second be locked the locking of part occur loosening time, rotation lock bolt makes locking clamp rise certain distance again, when disassembly is desired, counterrotating lock bolt, rotary spacing portion is made to rotate and separate with rotation prevention portion, locking clamp rotates backward and separates to second part that is locked, namely only need rotation lock bolt just can realize first part and second that is locked to be locked the locking of part and dismounting, operation is very easy, and effectively can solve repeatedly locking by making locking clamp rise and cause loosening problem after dismantling, simultaneously, owing to not needing to offer the tapped hole matched with the first perforate be locked on part on the second locking element, first of different size can be realized to be locked the general of part.
(2) locking device of the present invention, hollow stationary axle is arranged with clamping nut, the outer peripheral surface of hollow stationary axle is provided with and the outside thread clamping nut screw connection, the head of hollow stationary axle is provided with nut, first be locked part be fastened on nut and clamping nut between, by adjustment clamping nut in the fixed position of hollow stationary axle, be applicable to first of different-thickness and be locked part.
(3) access cover of the present invention, above-mentioned locking device is adopted to lock, cover plate no longer passes through bolt-locking, but cover plate is set on hollow stationary axle also relatively fixing, and the mode that locking clamp rises and access hole steel plate is fitted is locked, not only operation is very easy, and effectively solve cover plate repeatedly lock with dismantle after cause loosening problem, and owing to not needing to arrange tapped hole on access hole steel plate, even if there is deviation in the position of mounting hole on cover plate, also the locking of cover plate and access hole steel plate can not be affected, not only improve the versatility of cover plate but also make the locking fitting operation of cover plate and access hole steel plate very convenient, improve overhaul efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of locking device of the present invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the worm's eye view of Fig. 1.
Fig. 4 is the schematic diagram that the locking clamp of locking device of the present invention matches with rotation prevention portion.
Fig. 5 is the structural representation of the hollow stationary axle of locking device of the present invention.
Fig. 6 is the structural representation of the locking clamp of locking device of the present invention.
Fig. 7 is the structural representation of access cover of the present invention.
Fig. 8 is the locking clamp of access cover of the present invention schematic diagram when entering access hole.
Fig. 9 is the schematic diagram that the locking clamp of access cover of the present invention rotates to access hole steel plate.
Figure 10 is the schematic diagram that the locking clamp of access cover of the present invention and access hole steel plate are fitted.
In figure, each label represents:
1, hollow stationary axle; 11, seam; 12, rotation prevention portion; 13, nut; 14, radial bump; 2, nut is clamped; 3, lock bolt; 4, clamp is locked; 41, rotary spacing portion; 5, stop nut; 6, hexagon socket head; 7, cushion block; 8, spring; 91, access hole steel plate; 92, cover plate.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the present invention is described in further detail.
Fig. 1 to Fig. 6 shows a kind of embodiment of locking device of the present invention, this locking device comprises lock bolt 3, locking clamp 4 and the hollow stationary axle 1 being provided with through hole, through hole one end is provided with seam 11, the other end is provided with axially extended rotation prevention portion 12, head and the seam 11 of lock bolt 3 offset, the screw rod of lock bolt 3 is threaded with locking clamp 4 through through hole, locking clamp 4 is provided with for offseting to stop with rotation prevention portion 12 the rotary spacing portion 41 locking clamp 4 and rotate relative to hollow stationary axle 1, hollow stationary axle 1 to be locked part relative fixing with first part that is locked through first, the position of adjustment locking device with locking clamp 4 is placed on second be locked part below and deviate from second in the horizontal direction and to be locked part, then lock bolt 3 is rotated forward, locking clamp 4 is gone to second to be locked immediately below part, now, rotary spacing portion 41 rotates to rotation prevention portion 12 and leans with rotation prevention portion 12, make locking clamp 4 cannot continue to rotate relative to hollow stationary axle 1, after this, continuing rotational lock bolt 3 will make locking clamp 4 rise along lock bolt 3, the part that is locked with second is gradually close until fit, realize first part and second that is locked to be locked the locking of part, when disassembly is desired, counterrotating lock bolt 3, rotary spacing portion 41 is rotated and separates with rotation prevention portion 12, locking clamp 4 rotates backward and separates to second part that is locked, namely only need rotation lock bolt 3 just can realize first part and second that is locked to be locked the locking of part and dismounting, operation is very easy, and effectively can solve repeatedly locking by making locking clamp 4 rise and cause loosening problem after dismantling, simultaneously, owing to not needing to offer the tapped hole matched with the first perforate be locked on part on the second locking element, first of different size can be realized to be locked the general of part.
In the present embodiment, hollow stationary axle 1 is arranged with clamping nut 2, the outer peripheral surface of hollow stationary axle 1 is provided with and the outside thread clamping nut 2 and coordinate, the head of hollow stationary axle 1 is provided with nut 13, first be locked part be fastened on nut 13 and clamping nut 2 between, by adjustment clamping nut 2 in the fixed position of hollow stationary axle 1, be applicable to first of different-thickness to be locked part, cushion block 7 is provided with between nut 13 and clamping nut 2, increase the first area of contact being locked part and cushion block 7, thus prevent first the be locked surface of part damaged.
In the present embodiment, the head of lock bolt 3 is set to hexagon socket head 6, convenient with spanner rotation lock bolt 3.
In the present embodiment, the screw rod of lock bolt 3 is arranged with spring 8, radial bump 14 is provided with in through hole, spring 8 one end is against the lower end surface of radial bump 14, the other end is against the upper-end surface of locking clamp 4, after locking clamp 4 coordinates with rotation prevention portion 12, rotate forward lock bolt 3, locking clamp 4 is moved up along lock bolt 3, locking clamp 4 Compress Spring 8, until locking clamp 4 and second be locked part against, now spring 8 has larger decrement, a larger thrust is produced to locking clamp 4, thus prevent locking clamp 4 from loosening, locking clamp 4 is had to the effect of elastic locking.
In the present embodiment, the afterbody of lock bolt 3 is provided with the stop nut 5 preventing locking clamp 4 from departing from lock bolt 3, locking clamp 4 is installed in after on hollow stationary axle 1, stop nut 5 is loaded onto at the afterbody of lock bolt 3, rotate to correct position, when needs dismounting second is locked part, counterrotating lock bolt 3, rotary spacing portion 41 rotates and separates with rotation prevention portion 12, locking clamp 4 rotates backward and separates to second part that is locked, continue counterrotating lock bolt 3, opposite side and the rotation prevention portion 12 in rotary spacing portion 41 lean, locking clamp 4 is no longer rotated further and declines along lock bolt 3, stop nut 5 can prevent from departing from lock bolt 3 in locking clamp 4 decline process.
Fig. 7 to Figure 10 shows a kind of embodiment of access cover of the present invention, this access cover comprises access hole steel plate 91 and covers the cover plate 92 be located on access hole, access cover also comprises the locking device in above-described embodiment, cover plate 92 is provided with mounting hole, the lower end of hollow stationary axle 1 is through mounting hole, mounting hole place is fixed in the upper end of hollow stationary axle 1, locking clamp 4 is positioned at immediately below access hole steel plate 91, the access cover of the present embodiment, cover plate 92 no longer passes through bolt-locking, but cover plate 92 is set on hollow stationary axle 1 also relatively fixing, and the mode that locking clamp 4 rises and access hole steel plate 91 is fitted is locked, not only operation is very easy, and cause loosening problem after effectively solving cover plate more than 92 locking and dismantling, and owing to not needing to arrange tapped hole on access hole steel plate 91, even if there is deviation in the position of mounting hole on cover plate 92, also the locking of cover plate 92 and access hole steel plate 91 can not be affected, not only improve the versatility of cover plate 92 but also make cover plate 92 very convenient with the locking fitting operation of access hole steel plate 91, improve overhaul efficiency.
In the present embodiment, the upper end of hollow stationary axle 1 clamps cover plate 92 by clamping nut 2 and nut 13, hollow stationary axle 1 is through the mounting hole of cover plate 92, the upper-end surface of cover plate 92 and nut 13 against, lower end surface is blocked by clamping nut 2, adjustment clamping nut 2, fixing to make cover plate 92 be clamped, regulate the fixed position of clamping nut 2 simultaneously, be applicable to the cover plate 92 of different-thickness, improve the versatility of cover plate 92.
Fig. 8 to Figure 10 shows the locking process of access cover of the present invention, first the clamping nut 2 of locking device is disassembled, by the mounting hole of the lower end of hollow stationary axle 1 through cover plate 92, hollow stationary axle 1 is made to be fixed on cover plate 92, the position of adjustment locking device is to be placed on the below of access hole steel plate 91 by locking clamp 4 and to deviate from access hole steel plate 91(in the horizontal direction as shown in Figure 8), then lock bolt 3 is rotated forward, locking clamp 4 is gone to immediately below access hole steel plate 91, now, rotary spacing portion 41 rotates to rotation prevention portion 12 and matches with rotation prevention portion 12, make locking clamp 4 cannot continue to rotate (as shown in Figure 9) relative to hollow stationary axle 1, after this, continuing rotational lock bolt 3 will make locking clamp 4 rise along lock bolt 3, close until fit with access hole steel plate 91 gradually, realize the locking (as shown in Figure 10) of cover plate 92 and access hole steel plate 91, bolt-locking is adopted to compare with prior art cover plate 92 with access hole steel plate 91, this access cover adopts the locking mode of buckle, realize the locking that cover plate 92 is locked with access hole steel plate 91, only need rotational lock bolt 3, namely locking and the dismounting of cover plate 92 and access hole steel plate 91 can be realized, when cover plate 92 is pulled down by needs, rotate backward lock bolt 3, locking clamp 4 is made to depart from access hole steel plate 91.
Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (8)
1. a locking device, it is characterized in that: comprise lock bolt (3), locking clamp (4) and be provided with the hollow stationary axle (1) of through hole, described through hole one end is provided with seam (11), the other end is provided with axially extended rotation prevention portion (12), head and the described seam (11) of described lock bolt (3) offset, the screw rod of described lock bolt (3) is threaded with described locking clamp (4) through through hole, described locking clamp (4) is provided with for offseting with rotation prevention portion (12) the rotary spacing portion (41) that stops described locking clamp (4) to rotate relative to described hollow stationary axle (1).
2. locking device according to claim 1, is characterized in that: described hollow stationary axle (1) is arranged with clamping nut (2), the outer peripheral surface of described hollow stationary axle (1) is provided with the outside thread coordinated with described clamping nut (2).
3. locking device according to claim 2, is characterized in that: the head of described hollow stationary axle (1) is provided with nut (13), is provided with cushion block (7) between described nut (13) and described clamping nut (2).
4. locking device according to any one of claim 1 to 3, is characterized in that: the head of described lock bolt (3) is set to hexagon socket head (6).
5. locking device according to any one of claim 1 to 3, it is characterized in that: the screw rod of described lock bolt (3) is arranged with spring (8), radial bump (14) is provided with in described through hole, described spring (8) one end is against the lower end surface of described radial bump (14), and the other end is against the upper-end surface of described locking clamp (4).
6. locking device according to any one of claim 1 to 3, is characterized in that: the afterbody of described lock bolt (3) is provided with the stop nut (5) preventing described locking clamp (4) from departing from lock bolt (3).
7. an access cover, comprise access hole steel plate (91) and cover the cover plate (92) be located on described access hole, it is characterized in that: described access cover also comprises the locking device according to any one of claim 1 to 6, described cover plate (92) is provided with mounting hole, the lower end of described hollow stationary axle (1) is through described mounting hole, described mounting hole place is fixed in the upper end of described hollow stationary axle (1), and described locking clamp (4) is positioned at immediately below described access hole steel plate (91).
8. access cover according to claim 7, is characterized in that: the upper end of described hollow stationary axle (1) clamps described cover plate (92) by clamping nut (2) and nut (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615448.4A CN104373425B (en) | 2014-11-05 | 2014-11-05 | A kind of locking device and access cover thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410615448.4A CN104373425B (en) | 2014-11-05 | 2014-11-05 | A kind of locking device and access cover thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373425A true CN104373425A (en) | 2015-02-25 |
| CN104373425B CN104373425B (en) | 2016-07-06 |
Family
ID=52552527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410615448.4A Active CN104373425B (en) | 2014-11-05 | 2014-11-05 | A kind of locking device and access cover thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373425B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165484A (en) * | 2017-06-21 | 2017-09-15 | 杭州大森体育设施工程有限公司 | A kind of locking device and stage access hole valve |
| CN108286547A (en) * | 2017-12-14 | 2018-07-17 | 陕西长岭电子科技有限责任公司 | Self-unlocking locking device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754971Y (en) * | 2004-12-14 | 2006-02-01 | 中国重型汽车集团有限公司 | Elastic connecting press |
| JP2008208587A (en) * | 2007-02-26 | 2008-09-11 | Takigen Mfg Co Ltd | Bolt for locking |
| CN201874930U (en) * | 2010-11-25 | 2011-06-22 | 浙江泰普森休闲用品有限公司 | Engaged type locking element |
| CN102777453A (en) * | 2012-07-23 | 2012-11-14 | 东莞理工学院 | Fastening device applicable to remote-control maintenance |
| CN203257807U (en) * | 2013-04-07 | 2013-10-30 | 北京瑞克斡医疗科技有限公司 | Heart surface fixator locking device |
| US8820126B2 (en) * | 2012-12-25 | 2014-09-02 | Yu-Pin Lin | Anti-theft fastener with locking feature |
| CN204213116U (en) * | 2014-11-05 | 2015-03-18 | 湖南南车时代电动汽车股份有限公司 | A kind of locking device and access cover thereof |
-
2014
- 2014-11-05 CN CN201410615448.4A patent/CN104373425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754971Y (en) * | 2004-12-14 | 2006-02-01 | 中国重型汽车集团有限公司 | Elastic connecting press |
| JP2008208587A (en) * | 2007-02-26 | 2008-09-11 | Takigen Mfg Co Ltd | Bolt for locking |
| CN201874930U (en) * | 2010-11-25 | 2011-06-22 | 浙江泰普森休闲用品有限公司 | Engaged type locking element |
| CN102777453A (en) * | 2012-07-23 | 2012-11-14 | 东莞理工学院 | Fastening device applicable to remote-control maintenance |
| US8820126B2 (en) * | 2012-12-25 | 2014-09-02 | Yu-Pin Lin | Anti-theft fastener with locking feature |
| CN203257807U (en) * | 2013-04-07 | 2013-10-30 | 北京瑞克斡医疗科技有限公司 | Heart surface fixator locking device |
| CN204213116U (en) * | 2014-11-05 | 2015-03-18 | 湖南南车时代电动汽车股份有限公司 | A kind of locking device and access cover thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165484A (en) * | 2017-06-21 | 2017-09-15 | 杭州大森体育设施工程有限公司 | A kind of locking device and stage access hole valve |
| CN108286547A (en) * | 2017-12-14 | 2018-07-17 | 陕西长岭电子科技有限责任公司 | Self-unlocking locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104373425B (en) | 2016-07-06 |
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Address after: Fifty-seven, Zhuzhou Province, China National hi tech Development Zone, Hunan, Li Yu Industrial Park, district 412007 Patentee after: Zhongche Times Electric Vehicle Co., Ltd. Address before: Fifty-seven, Zhuzhou Province, China National hi tech Development Zone, Hunan, Li Yu Industrial Park, district 412007 Patentee before: Hunan CSR Times Electric Co., Ltd. |