CN201609880U - Stud bolt installation sleeve - Google Patents
Stud bolt installation sleeve Download PDFInfo
- Publication number
- CN201609880U CN201609880U CN2010201197175U CN201020119717U CN201609880U CN 201609880 U CN201609880 U CN 201609880U CN 2010201197175 U CN2010201197175 U CN 2010201197175U CN 201020119717 U CN201020119717 U CN 201020119717U CN 201609880 U CN201609880 U CN 201609880U
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- China
- Prior art keywords
- pullover
- hole
- stud
- steel ball
- convex body
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- Expired - Lifetime
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Abstract
The utility model provides a stud bolt installation sleeve comprising a front sleeve head, a rear sleeve head and a connecting shaft connecting the front sleeve head and the rear sleeve head, wherein the rear sleeve head is provided with a through hole; the rear end of the front sleeve head is provided with a thread shaft hole; one end of the connecting shaft is arranged in the through hole of the rear sleeve head to be fixedly connected with the rear sleeve head, the other end thereof is connected with the thread shaft hole of the front sleeve head, and the end part of the other end is provided with a slot; the front end of the front sleeve head is provided with an inner threaded hole; a steel ball hole is arranged between the thread shaft hole and the inner threaded hole and internally provided with a steel ball; the two ends of the steel ball are respectively matched with the end parts of the slot and the inner threaded hole; and the rear end part of the front sleeve head and the front end part of the rear sleeve head are respectively provided with convex bodies which can mutually limit and press the steel ball. The sleeve is provided with the convex body structure, when being reversely taken out, the sleeve can be easily taken out without an auxiliary wrench, the well installed stud bolt can not be driven to rotate, the immovable fitting between the stud bolt and the part can not be damaged, thus greatly improving the installation performance and having the advantages of convenient installation and the like.
Description
Technical field
The utility model relates to dismounting, the specific purpose tool of securing member is installed, particularly a kind of stud installing sleeve that is used to dismantle with mounting stud.
Background technology
Stud generally locks by loading onto nut in the non assembled male end at two by being located at two and having externally threaded screw rod and be located at the securing member that the polished rod of middle part is formed, and is used for fastening machines part etc.By the operation of nut check, also need after the general assembling two nuts of locking are mutually taken off, have the lower defective of efficiency of assembling.In the prior art, also there are some to lock stud by sleeve.This sleeve is generally combined by internal thread screw rod and hexagonal swivel nut, being about to the internal thread of sleeve and the non-assembling male end of stud locks, though this structure operating efficiency is higher, but have following defective: (1) is behind part that stud is packed into fully, need sleeve is separated with installed screw rod, when backing out sleeve, stud also is unscrewed together or backs out, stud can not disposablely be seated, also can destroy the threaded engagement between stud and the screw; (2) when sleeve is back-outed, need could guarantee to make sleeve stud when counter-rotation can and then not rotate with another spanner or sleeve hexagonal swivel nut, influence the fastening effect between the part, have complex operation, stud easily by defectives such as band commentaries on classics; (3) because the structure of not setting up defences between the internal thread screw rod of sleeve and the hexagonal swivel nut, the hexagonal swivel nut easily falls from the internal thread screw rod when withdrawing from when sleeve is finished.
The utility model content
The purpose of this utility model is to overcome the shortcoming and deficiency of prior art, provides a kind of simple and reasonable for structure, just can take out without external force in the time of can guaranteeing sleeve counter-rotating taking-up, and stud can be by the stud installing sleeve of band commentaries on classics.
The purpose of this utility model is achieved through the following technical solutions: the stud installing sleeve, the connecting axle pullover before comprising, that the back is pullover and the connection front and back are pullover, on afterwards pullover, have through hole, have the screw thread axis hole in preceding pullover rear end, one end of described connecting axle places interior and back pullover the fixedlying connected of back pullover through hole, the other end is connected (connecting axle in the screw thread axis hole can along screw thread axis hole direction certain distance of moving) with preceding pullover screw thread axis hole, and has slotted eye in its end; Pullover front end is provided with internal thread hole before described, is provided with the steel ball hole between screw thread axis hole and the internal thread hole, and steel ball is provided with steel ball in the hole, and the two ends of steel ball cooperate with slotted eye, internal thread hole end respectively; Described preceding pullover rearward end and the pullover leading section in back are provided with respectively can the spacing mutually convex body that compresses steel ball.
Pullover convex body and the preceding pullover convex body in described back is the segment of its end along circumferential protrusion.
Described connecting axle is not less than the sphere minimum point that cooperates with internal thread hole of steel ball and the ultimate range between the internal thread hole end face at least along the movable distance of screw thread axis hole direction.
Before described between pullover convex body and the afterwards pullover convex body can counterrotating arc length and connecting axle movable distance in the screw thread axis hole corresponding.
All preferred 90 ° of the central angle of convex body that described back is pullover and preceding pullover convex body, or all preferred 120 °.
Described connecting axle is made of two sections axles, and wherein one section axle is a smooth shaft, and another section is for being with externally threaded axle; Described smooth shaft places in the pullover through hole in back and pullover the fixedlying connected in back, and described screw thread axis hole pullover before placing with externally threaded axle is interior and be connected with the screw thread axis hole; Described slotted eye is located at and is with externally threaded shaft end.
The pullover through hole in described back is a square opening, and the smooth shaft on the described connecting axle also is a square shaft.
Described slotted eye is a spherical pore, and it is positioned at the diameter of the diameter of connecting axle end face less than steel ball.
Described connecting axle is fixedlyed connected by pin with the back is pullover.
The internal thread hole of pullover front end matches with the external screw thread of stud abutting end before described, and preceding pullover front end presents taper.
One end of the pullover through hole in described back cooperates with spanner, and the other end cooperates with connecting axle.
Use principle of the present utility model: behind sleeve, put (torque wrench just transfers to be changeed) on the torque wrench in the pullover through hole; The internal thread hole of the preceding pullover front end of sleeve is aimed at the abutting end of stud, utilize the just commentaries on classics of torque wrench to drive the pullover rotation in back, drive the screw thread rotation of connecting axle simultaneously along the screw thread axis hole of preceding pullover rear end; The back is pullover in the process of rotation, the convex body of its leading section also rotates along circumference, after having waited to rotate certain arc length, the pullover convex body in back is lived spacing fixing by preceding pullover convex body shelves, at this moment, the rotation of connecting axle then drives preceding pullover synchronous rotation, so that stud screws in sleeve and screw with the internal thread hole of sleeve and to cooperate; When stud screws in to the internal thread hole end, sleeve continues rotation, at this moment, and owing to convex body and preceding pullover convex body that the back is pullover are spacing mutually fixing, the continuation rotation of sleeve then can make connecting axle promote steel ball and compress to stud, and withstand stud; Be connected owing to compressed between stud and this sleeve, so sleeve can drive stud and rotate synchronously, the other end of stud be screwed in the screwed hole of part to be connected and screw and be in place.After the stud installation, then can tear the sleeve operation open: torque wrench is transferred to counter-rotating, the torque wrench counter-rotating drives the pullover reverse rotation in back, the pullover rotation in back at first drives connecting axle and rotates synchronously, at this moment, convex body that the back is pullover and preceding pullover convex body break away from (promptly breaking away from spacing), make that compressing the steel ball that withstands stud originally unclamps, and the thrust of stud has disappeared; The pullover continuation reverse rotation in back, in the process of rotation, the convex body of its leading section also along circumference along opposite spin, after having waited to rotate certain arc length, the pullover convex body in back is blocked by the other end of preceding pullover convex body, make two convex bodys spacing mutually once more fixing, and pullover synchronous rotation before driving, so that sleeve screws out stud.In tearing the process of sleeve open, because the thrust between steel ball and the stud has disappeared, therefore, during the sleeve rotation, can not be with the mounted stud of commentaries on classics to rotate together, thereby guarantee need not assist spanner to take out easily when the sleeve counter-rotating is taken out, and can not destroy the immovable fitting between stud and the part.
The utility model compared with prior art has following advantage and beneficial effect:
1, is provided with the convex body structure in the sleeve of the present utility model, when the sleeve counter-rotating is taken out, need not assist spanner to take out easily, and can not be with the mounted stud of commentaries on classics, can not destroy the immovable fitting between stud and the part, improve its installation capability greatly, had advantages such as installation capability is good and easy to operate.
2, sleeve of the present utility model be provided with two pullover, and two connect by connecting axle between pullover, pulloverly before can guaranteeing can not fall down the influence operation in the process that the sleeve counter-rotating is taken out.
3, be provided with steel ball in the sleeve of the present utility model, can realize that the stud end face contacts with point between the steel ball, effectively guarantee can not walk when stud is installed, have extraordinary locking property.
4, the utility model has not only avoided sleeve to be locked at being difficult on the stud problem of taking off effectively, and can make that stud is disposable to be seated, and has improved its installation effectiveness widely.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model.
Fig. 2 is a preceding pullover vertical view shown in Figure 1.
Fig. 3 is an A-A cutaway view shown in Figure 2.
Fig. 4 is a preceding pullover perspective view shown in Figure 1.
Fig. 5 is the pullover vertical view in back shown in Figure 1.
Fig. 6 is a B-B cutaway view shown in Figure 5.
Fig. 7 is the structural representation of connecting axle shown in Figure 1.
Fig. 8 is the top and bottom perspective views of connecting axle shown in Figure 7, and wherein figure (a) is a upward view, and figure (b) is a vertical view.
Before Fig. 9 is sleeve shown in Figure 1 and stud malcompression, the fit structure schematic diagram of connecting axle and steel ball.
Figure 10 is the structural representation that sleeve shown in Figure 1 and stud are used.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Fig. 1～Fig. 9 shows the concrete structure figure of present embodiment, as shown in Figure 1, this stud installing sleeve is pullover 5 before comprising, back pullover 1 and connect before and after pullover connecting axle 2, as shown in Figure 6, on back pullover 1, have through hole 6; As shown in Figure 3, have screw thread axis hole 10 in preceding pullover 5 rear end, an end of connecting axle 2 places in back pullover 1 the through hole 6 fixedlys connected with back pullover 1, and the other end is connected with preceding pullover 5 screw thread axis hole 10, and has slotted eye 14 in its end, as shown in Figure 7; Preceding pullover 5 front end is provided with internal thread hole 9, is provided with steel ball hole 8 between screw thread axis hole 10 and the internal thread hole 9, and steel ball 4 is set in the steel ball hole 8, and steel ball 4 cooperates with slotted eye 14, internal thread hole 9 ends respectively.
As shown in Figure 1, the leading section of preceding pullover 5 rearward end and back pullover 1 is provided with the convex body 3,7 that can spacingly mutually compress steel ball respectively, the convex body 7 of back pullover 1 is the segment of its end along circumferential protrusion, and preceding pullover 5 convex body 3 also is the segment of its end along circumferential protrusion, as shown in Figure 4; Connecting axle 2 is not less than sphere minimum point and the ultimate range between the internal thread hole end face (being the distance between point of c shown in Fig. 9 and the d point) that steel ball 4 cooperates with internal thread hole at least along the movable distance of screw thread axis hole direction.
Before pullover 5 convex body 3 with afterwards between pullover 1 the convex body 7 can counterrotating arc length and connecting axle 2 movable distance in screw thread axis hole 10 corresponding.
As Fig. 2 and shown in Figure 5, the convex body 7 of back pullover 1 and the central angle of preceding pullover 5 convex body 3 are 90 °.
As shown in Figure 7, connecting axle 2 is made of two sections axles, and wherein one section axle is a smooth shaft 11, and another section is the axle 12 of band external screw thread 13; Smooth shaft 11 places in back pullover 1 the through hole 6 fixedlys connected with back pullover 1, and pullover screw thread axis hole 10 is interior and be connected with screw thread axis hole 10 before placing with externally threaded axle 12; Slotted eye 14 is located at and is with externally threaded axle 12 ends.
The through hole 6 of back pullover 1 is a square opening, and the one end cooperates with the smooth shaft 11 of connecting axle 2, and the other end cooperates with spanner; As shown in Figure 8, the smooth shaft 11 on the connecting axle 2 is a square shaft also, and is with externally threaded axle 12 to be circular shaft.
Shown in Fig. 8 (a), slotted eye 14 is a spherical pore, and it is positioned at the diameter of the diameter of connecting axle 2 end faces less than steel ball 4.
Connecting axle 2 is fixedlyed connected by pin with back pullover 1.
As shown in figure 10, the internal thread hole 9 of preceding pullover 5 front ends matches with the external screw thread of stud abutting end 15, and preceding pullover 5 front end presents taper.
The use principle of present embodiment: behind sleeve, put in pullover 1 the through hole 6 (torque wrench just transfers to be changeed) on the torque wrench; The internal thread hole 9 of connecting axle 2 front ends of sleeve is aimed at the abutting end 15 of studs, utilize the just commentaries on classics of torque wrench to drive pullover 1 rotation in back, drive the screw thread rotation of connecting axle 2 simultaneously along the screw thread axis hole 10 of preceding pullover rear end; Back pullover 1 is in the process of rotation, the convex body 7 of its leading section also rotates along circumference, after having waited to rotate certain arc length, the convex body 7 of back pullover 1 is lived spacing fixing by 3 grades of preceding pullover 5 convex bodys, at this moment, steel ball 4 does not have thrust, can become flexible, pullover 5 rotated synchronously before being rotated further then of connecting axle 2 drove, so that stud screws in sleeve and screw with the internal thread hole 9 of sleeve and to cooperate; When stud screws in to internal thread hole 9 ends, sleeve continues rotation, at this moment, because the convex body 7 of back pullover 1 is spacing mutually fixing with preceding pullover 5 convex body 3, the continuation of sleeve rotation then can make connecting axle 2 promote steel ball 4 and compress to stud, and withstand stud; Be connected owing to compressed between stud and this sleeve, so sleeve can drive stud and rotate synchronously, the other end of stud be screwed in the screwed hole of part to be connected and screw and be in place.After the stud installation, then can tear the sleeve operation open: torque wrench is transferred to counter-rotating, the torque wrench counter-rotating drives pullover 1 reverse rotation in back, the rotation of back pullover 1 at first drives connecting axle 2 and rotates synchronously, at this moment, the convex body 7 of back pullover 1 breaks away from (promptly breaking away from spacing) with preceding pullover 5 convex body 3, makes that compressing the steel ball 4 that withstands stud originally unclamps, and the thrust of stud has disappeared; Reverse rotation is continued in back pullover 1, in the process of rotation, the convex body 7 of its leading section also along circumference along opposite spin, after having waited to rotate certain arc length, the convex body 7 of back pullover 1 is blocked by the other end of preceding pullover 5 convex body 3, make two convex bodys 3,7 spacing mutually once more fixing, and pullover 5 rotations synchronously before driving, so that sleeve screws out stud.In tearing the process of sleeve open, because the thrust between steel ball 4 and the stud has disappeared, therefore, during the sleeve rotation, can not be with the mounted stud of commentaries on classics to rotate together, thereby guarantee need not assist spanner to take out easily when the sleeve counter-rotating is taken out, and can not destroy the immovable fitting between stud and the part.
Present embodiment except that following feature other structures with embodiment 1: the central angle of convex body that the back is pullover and preceding pullover convex body is 120 °.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (10)
1. stud installing sleeve, it is characterized in that: the connecting axle pullover before comprising, that the back is pullover and the connection front and back are pullover, on afterwards pullover, have through hole, have the screw thread axis hole in preceding pullover rear end, one end of described connecting axle places interior and back pullover the fixedlying connected of back pullover through hole, the other end is connected with preceding pullover screw thread axis hole, and has slotted eye in its end; Pullover front end is provided with internal thread hole before described, is provided with the steel ball hole between screw thread axis hole and the internal thread hole, and steel ball is provided with steel ball in the hole, and the two ends of steel ball cooperate with slotted eye, internal thread hole end respectively; Described preceding pullover rearward end and the pullover leading section in back are provided with respectively can the spacing mutually convex body that compresses steel ball.
2. stud installing sleeve according to claim 1 is characterized in that: pullover convex body and the preceding pullover convex body in described back is the segment of its end along circumferential protrusion.
3. stud installing sleeve according to claim 2 is characterized in that: described connecting axle is not less than sphere minimum point that steel ball cooperates with internal thread hole and the ultimate range between the internal thread hole end face at least along the movable distance of screw thread axis hole direction.
4. stud installing sleeve according to claim 2 is characterized in that: before described between pullover convex body and the afterwards pullover convex body can counterrotating arc length and connecting axle movable distance in the screw thread axis hole corresponding.
5. stud installing sleeve according to claim 4 is characterized in that: the central angle of convex body that described back is pullover and preceding pullover convex body is 90 °, or is 120 °.
6. stud installing sleeve according to claim 1 is characterized in that: described connecting axle is made of two sections axles, and wherein one section axle is a smooth shaft, and another section is for being with externally threaded axle; Described smooth shaft places in the pullover through hole in back and pullover the fixedlying connected in back, and described screw thread axis hole pullover before placing with externally threaded axle is interior and be connected with the screw thread axis hole; Described slotted eye is located at and is with externally threaded shaft end.
7. stud installing sleeve according to claim 6 is characterized in that: the pullover through hole in described back is a square opening, and the smooth shaft on the described connecting axle also is a square shaft.
8. stud installing sleeve according to claim 1 is characterized in that: described slotted eye is a spherical pore, and it is positioned at the diameter of the diameter of connecting axle end face less than steel ball.
9. stud installing sleeve according to claim 1 is characterized in that: described connecting axle is fixedlyed connected by pin with the back is pullover.
10. stud installing sleeve according to claim 1 is characterized in that: the internal thread hole of pullover front end matches with the external screw thread of stud abutting end before described, and preceding pullover front end presents taper; One end of the pullover through hole in described back cooperates with spanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201197175U CN201609880U (en) | 2010-02-10 | 2010-02-10 | Stud bolt installation sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201197175U CN201609880U (en) | 2010-02-10 | 2010-02-10 | Stud bolt installation sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201609880U true CN201609880U (en) | 2010-10-20 |
Family
ID=42960513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201197175U Expired - Lifetime CN201609880U (en) | 2010-02-10 | 2010-02-10 | Stud bolt installation sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201609880U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192350A (en) * | 2012-01-10 | 2013-07-10 | 北汽福田汽车股份有限公司 | Wire cutting tool for stud |
| CN103286730A (en) * | 2013-06-21 | 2013-09-11 | 无锡市飞玛斯精密科技有限公司 | Stud implanting wrench |
| CN103495860A (en) * | 2013-10-18 | 2014-01-08 | 中核（天津）机械有限公司 | Automatic tightening device for double-end studs and nuts |
| CN103522255A (en) * | 2013-10-18 | 2014-01-22 | 中核（天津）机械有限公司 | Automatic tightener of stud |
| CN103522242A (en) * | 2013-10-18 | 2014-01-22 | 中核（天津）机械有限公司 | Automatic nut tightening device |
| CN103624728A (en) * | 2013-11-05 | 2014-03-12 | 奇瑞汽车股份有限公司 | Oil filter connector installation sleeve |
| CN104029161A (en) * | 2014-06-04 | 2014-09-10 | 成都来宝石油设备有限公司 | Combined protective sleeve for assembling screw |
| CN104816274A (en) * | 2015-05-21 | 2015-08-05 | 安徽安凯汽车股份有限公司 | Installing fixture for double armed bolt |
| CN105397717A (en) * | 2015-12-15 | 2016-03-16 | 湖南湘衡泵业有限责任公司 | Double-thread screw installation device and inner and outer thread screw sleeve installation device |
| CN108223503A (en) * | 2018-03-15 | 2018-06-29 | 桂林理工大学 | The eccentric adjustable hidden attachment device of double drive control |
| CN108252986A (en) * | 2018-03-15 | 2018-07-06 | 桂林理工大学 | Double drive controls concealed connecting device |
| CN108253002A (en) * | 2018-03-15 | 2018-07-06 | 桂林理工大学 | Single drive control concealed connecting device |
| CN108286556A (en) * | 2018-03-15 | 2018-07-17 | 桂林理工大学 | Single drive control bias adjustable hidden attachment device |
| CN108311880A (en) * | 2018-04-12 | 2018-07-24 | 南京中电熊猫照明有限公司 | A kind of tightening machine and tightening method |
| CN108397465A (en) * | 2018-03-15 | 2018-08-14 | 桂林理工大学 | A kind of double drive control stealthy connect method |
| CN110125670A (en) * | 2019-06-05 | 2019-08-16 | 苏州逸美德科技有限公司 | Cocking mechanism and make-up and backing method for double thread part |
-
2010
- 2010-02-10 CN CN2010201197175U patent/CN201609880U/en not_active Expired - Lifetime
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192350A (en) * | 2012-01-10 | 2013-07-10 | 北汽福田汽车股份有限公司 | Wire cutting tool for stud |
| CN103192350B (en) * | 2012-01-10 | 2015-04-22 | 北汽福田汽车股份有限公司 | Wire cutting tool for stud |
| CN103286730A (en) * | 2013-06-21 | 2013-09-11 | 无锡市飞玛斯精密科技有限公司 | Stud implanting wrench |
| CN103522255B (en) * | 2013-10-18 | 2015-08-12 | 中核（天津）机械有限公司 | A kind of Automatic tightener of stud |
| CN103495860A (en) * | 2013-10-18 | 2014-01-08 | 中核（天津）机械有限公司 | Automatic tightening device for double-end studs and nuts |
| CN103522255A (en) * | 2013-10-18 | 2014-01-22 | 中核（天津）机械有限公司 | Automatic tightener of stud |
| CN103522242A (en) * | 2013-10-18 | 2014-01-22 | 中核（天津）机械有限公司 | Automatic nut tightening device |
| CN103495860B (en) * | 2013-10-18 | 2016-06-08 | 中核（天津）机械有限公司 | The automatic screwing device of double end stud and nut |
| CN103522242B (en) * | 2013-10-18 | 2015-11-18 | 中核（天津）机械有限公司 | A kind of nut automatic tightening device |
| CN103624728A (en) * | 2013-11-05 | 2014-03-12 | 奇瑞汽车股份有限公司 | Oil filter connector installation sleeve |
| CN104029161A (en) * | 2014-06-04 | 2014-09-10 | 成都来宝石油设备有限公司 | Combined protective sleeve for assembling screw |
| CN104816274A (en) * | 2015-05-21 | 2015-08-05 | 安徽安凯汽车股份有限公司 | Installing fixture for double armed bolt |
| CN105397717A (en) * | 2015-12-15 | 2016-03-16 | 湖南湘衡泵业有限责任公司 | Double-thread screw installation device and inner and outer thread screw sleeve installation device |
| CN108286556A (en) * | 2018-03-15 | 2018-07-17 | 桂林理工大学 | Single drive control bias adjustable hidden attachment device |
| CN108252986A (en) * | 2018-03-15 | 2018-07-06 | 桂林理工大学 | Double drive controls concealed connecting device |
| CN108253002A (en) * | 2018-03-15 | 2018-07-06 | 桂林理工大学 | Single drive control concealed connecting device |
| CN108223503A (en) * | 2018-03-15 | 2018-06-29 | 桂林理工大学 | The eccentric adjustable hidden attachment device of double drive control |
| CN108397465A (en) * | 2018-03-15 | 2018-08-14 | 桂林理工大学 | A kind of double drive control stealthy connect method |
| CN108397465B (en) * | 2018-03-15 | 2022-07-01 | 苏州萨伯工业设计有限公司 | Dual-drive control invisible connection method |
| CN108311880A (en) * | 2018-04-12 | 2018-07-24 | 南京中电熊猫照明有限公司 | A kind of tightening machine and tightening method |
| CN108311880B (en) * | 2018-04-12 | 2024-06-07 | 南京中电熊猫照明有限公司 | Tightening method |
| CN110125670A (en) * | 2019-06-05 | 2019-08-16 | 苏州逸美德科技有限公司 | Cocking mechanism and make-up and backing method for double thread part |
| CN110125670B (en) * | 2019-06-05 | 2024-04-30 | 逸美德科技股份有限公司 | Tightening mechanism for double-ended screw and tightening and retracting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 526070 North ten District of Dinghu District, Zhaoqing City, Guangdong Province Patentee after: Guangdong hung Polytron Technologies Inc Address before: 526070 North ten District of Dinghu District, Zhaoqing City, Guangdong Province Patentee before: GUANGDONG HONGTEO ACCURATE TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101020 |
|
| CX01 | Expiry of patent term |