CN109968285B - Nut mounting tool for side hole fastening tin bath bottom brick - Google Patents
Nut mounting tool for side hole fastening tin bath bottom brick Download PDFInfo
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- CN109968285B CN109968285B CN201910366407.9A CN201910366407A CN109968285B CN 109968285 B CN109968285 B CN 109968285B CN 201910366407 A CN201910366407 A CN 201910366407A CN 109968285 B CN109968285 B CN 109968285B
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- tin bath
- bath bottom
- nut
- gear
- brick
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Abstract
The invention discloses a nut mounting tool for fastening a tin bath bottom brick through a side hole, which comprises the tin bath bottom brick, wherein a mounting hole is horizontally formed in the side wall of the tin bath bottom brick, a screw rod is inserted into the tin bath bottom brick, a tin bath bottom shell is welded at the lower end of the screw rod, a nut is connected to the upper end of the tin bath bottom shell in a threaded manner, a fastener is clamped on the nut, an equipment cavity is formed in the fastener, a plurality of clamping grooves are symmetrically formed in the side wall of the equipment cavity, a plurality of reset springs are fixedly connected to the inner side wall of each clamping groove, a mounting seat is rotatably connected in the equipment cavity, a gear cavity, a circular cavity and a plurality of placing grooves are formed in the mounting seat, and a supporting block is slidably connected in each placing groove. Has the advantages that: the tin bath bottom brick mounting tool is ingenious in structure and convenient to operate, the mounting holes formed in the tin bath bottom brick mounting tool are small, the processing difficulty is reduced, the tin bath bottom brick mounted by the tool does not need to be subjected to mud tank sealing, and the processing difficulty of the brick is low.
Description
Technical Field
The invention relates to the technical field of forming equipment in a float plate glass production process, in particular to a nut mounting tool for fastening a tin bath bottom brick through a side hole.
Background
The tin bath is the former of float plate glass production technology, and iron shell, inside lining refractory material brick for splendid attire high temperature tin liquid, and the bottom brick of tin bath is the refractory material brick for the bottom of tin bath, for preventing that the bottom brick of tin bath is floated by the tin liquid, will be fixed in on the tank bottom steel sheet with the bolt, for preventing that the tin liquid from oozing, can not have the hole on the tank bottom steel sheet, therefore the bolt is welded on the tank bottom steel sheet. The bottom of the whole tin bath is of a completely symmetrical structure, and most of the used bottom bricks are rectangular section bricks; two bolt holes are arranged on the tin bath bottom brick; two truncated cone-shaped can sealing spaces are arranged on the using surface of the tin bath bottom brick, and after the tin bath bottom brick is fixed by bolts, the tin bath bottom brick is filled with slurry can sealing materials.
By adopting the mode to install the tin bath bottom brick, even if the slurry can sealing material is dried, the moisture in the slurry can sealing material cannot be completely discharged, slight release during production can influence glass forming, the installation is not convenient, and the machining difficulty of the variable-diameter circular truncated cone can sealing space is large.
To this end, we propose a nut setting tool for side-hole fastening of a tin bath bottom block to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, water in a slurry sealing tank cannot be completely drained, slight release during production can affect glass forming, the installation is not very convenient, and the machining difficulty of a reducing circular truncated cone sealing tank space is high, and provides a nut installation tool for fastening a tin bath bottom brick through a side hole.
In order to achieve the purpose, the invention adopts the following technical scheme: a nut mounting tool for fastening a tin bath bottom brick through a side hole comprises the tin bath bottom brick, wherein a mounting hole is horizontally formed in the side wall of the tin bath bottom brick, a screw rod is inserted into the tin bath bottom brick, a tin bath bottom shell is welded at the lower end of the screw rod, a nut is connected with the upper end of the tin bath bottom shell in a threaded manner, a fastener is clamped on the nut, an equipment cavity is formed in the fastener, a plurality of clamping grooves are symmetrically formed in the side wall of the equipment cavity, a plurality of reset springs are fixedly connected to the inner side wall of each clamping groove, the other end of each reset spring is free, a mounting seat is rotatably connected in the equipment cavity, a gear cavity, a circular cavity and a plurality of placing grooves are formed in the mounting seat, each placing groove is communicated with the circular cavity, a supporting block is slidably connected in each placing groove, a rotating rod is vertically installed in the circular cavity, and a rotating seat is installed on, the lower extreme of dwang extends to the gear intracavity and installs straight-tooth spur gear, the welding has the connecting rod on the lateral wall of mount pad, the one end of connecting rod runs through the fastener and has the welding stock, the elongated slot has been seted up on the mount pad, and elongated slot and gear chamber intercommunication, the through-hole has been seted up on the connecting rod, the movable groove has been seted up on the stock, and movable groove and through-hole intercommunication, rotate through the pivot on the inner wall of elongated slot and be connected with sector gear, and sector gear and straight-tooth spur gear meshing, the welding has the connecting rod on the sector gear, and the connecting rod passes the through-hole and is located the movable groove, the arc wall has been seted up on the stock, the welding has the promotion handle on the connecting rod, and promotes.
In the nut mounting tool for fastening the bottom brick of the tin bath through the side hole, the screw rod is sleeved with the gasket, and the gasket is positioned between the nut and the inner wall of the mounting hole.
In the nut installation tool for fastening the bottom brick of the tin bath through the side hole, the rotating seat is provided with a plurality of wedge-shaped deep grooves and a plurality of shallow grooves.
In the nut mounting tool for side hole fastening of the tin bath bottom brick, the lower surface of the fastener is provided with a regular hexagonal groove matched with the nut, and the inner top wall of the regular hexagonal groove is fixedly connected with the cushion pad.
In the nut mounting tool for side hole fastening of the tin bath bottom brick, the number of the clamping grooves, the abutting blocks, the wedge-shaped deep grooves and the shallow grooves is six.
In the nut installation tool for fastening the bottom brick of the tin bath through the side hole, a plurality of gear teeth are distributed on the sector gear, and the distribution angle of the gear teeth is greater than 30 degrees.
In the nut mounting tool for fastening the bottom brick of the tin bath through the side hole, the side wall of one end, far away from the sector gear, of the long rod is symmetrically and fixedly connected with a plurality of anti-slip rods.
In the above nut installation tool for side hole fastening of the tin bath bottom brick, the lower end of the rotating rod is installed on the inner wall of the gear cavity through the push ball bearing.
Compared with the prior art, the invention has the beneficial effects that:
1. establish the nut through the fastener card, promote the stock and realize the locking of nut, the operation of being convenient for, the mounting hole of seting up simultaneously is less, and the processing degree of difficulty reduces, and the molten tin bath bottom brick with this instrument installation need not mud sealing tank, and the brick processing degree of difficulty is low.
2. Through rotating the seat, the wedge deep groove, the shallow slot, support the piece, reset spring, the setting of draw-in groove, can realize being connected between mount pad and the fastener, thereby through the stock, the rotation of mount pad is realized to the connecting rod, and then realize the rotation of fastener, thereby fastening nut, rotate the seat simultaneously, the wedge deep groove, the shallow slot, support the piece, reset spring, the setting of draw-in groove, also can guarantee that the motion of mount pad and fastener is asynchronous, through the stock, the connecting rod drives the mount pad and rotates, fastener and nut remain motionless this moment, and then avoid the position between nut and the screw rod unchangeable relatively, be convenient for lock once more.
3. Sector gear and straight-tooth spur gear's setting can be convenient for realize the rotation that rotates the seat outside the mounting hole, and the setting of arc wall guarantees to promote the handle and can move at certain extent, and then realizes the rotation of connecting rod through promoting the handle to realize sector gear's rotation, and then realize rotating the rotation of seat through straight-tooth spur gear, thereby drive the position change that supports the piece.
4. The reset spring is not connected with the abutting block, and therefore when the abutting block is located in the wedge-shaped deep groove, the mounting seat is not connected with the fastening piece, and therefore the mounting seat can be guaranteed to rotate, and the fastening piece does not rotate.
5. A plurality of teeth of a cogwheel distribute on the sector gear, and the angle that the teeth of a cogwheel distributes is greater than 30, guarantees that sector gear pivoted angle is greater than the angle between the adjacent wedge deep groove in position and the shallow slot, and then can drive and rotate seat pivoted angle and can realize wedge deep groove, shallow slot for supporting the position conversion of piece.
6. The regular hexagon groove with nut matched with is seted up to the lower surface of fastener, and the card that the fastener of being convenient for can be fine is established on the nut, and fixedly connected with blotter on the interior roof in regular hexagon groove avoids the fastener to offset with the upper end contact of screw rod to cause the damage of screw rod or fastener, thereby cause the damage of nut mounting tool.
In conclusion, the tin bath bottom brick mounting tool is ingenious in structure and convenient to operate, the mounting holes formed in the tin bath bottom brick mounting tool are small, the processing difficulty is reduced, the tin bath bottom brick mounted by the tool does not need to be subjected to mud tank sealing, and the processing difficulty of the brick is low.
Drawings
FIG. 1 is a schematic structural view of a nut installation tool for side hole fastening of a tin bath bottom brick according to the present invention;
FIG. 2 is an enlarged view of a part of the structure of a fastener in the nut installation tool for side hole fastening of a bottom brick of a tin bath according to the present invention;
FIG. 3 is an enlarged view of a partial structure of a mounting seat in a state that a supporting block abuts against a wedge-shaped deep groove in the nut mounting tool for side hole fastening of a tin bath bottom brick provided by the invention;
FIG. 4 is an enlarged view of a partial structure of an installation seat in a shallow groove state where a resisting block in the nut installation tool for side hole fastening of a tin bath bottom brick provided by the invention is abutted;
FIG. 5 is an enlarged view of a pushing handle part in the nut setting tool for side hole fastening of a bottom brick of a tin bath according to the present invention;
FIG. 6 is an enlarged view of the sector gear portion of the nut setting tool for side hole fastening of a bottom block of a tin bath according to the present invention.
In the figure: 1 tin bath bottom brick, 2 tin bath bottom shell, 3 screw rods, 4 gaskets, 5 nuts, 6 fasteners, 7 mounting holes, 8 long rods, 9 pushing handles, 10 equipment cavities, 11 return springs, 12 clamping grooves, 13 rotating seats, 14 mounting seats, 15 round cavities, 16 abutting blocks, 17 movable grooves, 18 connecting rods, 19 connecting rods, 20 long grooves, 21 rotating shafts, 22 sector gears, 23 rotating rods, 24 straight-tooth cylindrical gears, 25 gear cavities, 26 cushion pads, 27 arc-shaped grooves, 28 shallow grooves, 29 wedge-shaped deep grooves and 30 anti-skid rods.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1-6, a nut mounting tool for side opening fastening tin bath bottom brick, including tin bath bottom brick 1, mounting hole 7 has been seted up to the level on the lateral wall of tin bath bottom brick 1, 1 interpolation of tin bath bottom brick is equipped with screw rod 3, the lower extreme welding of screw rod 3 has tin bath bottom shell 2, the upper end threaded connection of tin bath bottom shell 2 has nut 5, the cover is equipped with packing ring 4 on the screw rod 3, and packing ring 4 is located between the inner wall of nut 5 and mounting hole 7, the setting of packing ring 4 can guarantee the fastening of being connected between nut 5 and the tin bath bottom brick 1, the card is equipped with fastener 6 on nut 5, fastener 6's lower surface is seted up with nut 5 matched with positive hexagonal groove, fixedly connected with blotter 26 on the interior roof of positive hexagonal groove, avoid fastener 6 and screw rod 3's upper end contact to offset, thereby cause the damage of screw rod 3 or fastener 6.
An equipment cavity 10 is formed in a fastening piece 6, a plurality of clamping grooves 12 are symmetrically formed in the side wall of the equipment cavity 10, a plurality of return springs 11 are fixedly connected to the inner side wall of each clamping groove 12, the other ends of the return springs 11 are free, an installation seat 14 is rotatably connected to the equipment cavity 10, a gear cavity 25, a circular cavity 15 and a plurality of placing grooves are formed in the installation seat 14, each placing groove is communicated with the circular cavity 15, a resisting block 16 is slidably connected to the inside of each placing groove, a rotating rod 23 is vertically installed in the circular cavity 15, a rotating seat 13 is installed on the rotating rod 23, a plurality of wedge-shaped deep grooves 29 and a plurality of shallow grooves 28 are formed in the rotating seat 13, the clamping grooves 12, the resisting blocks 16, the wedge-shaped deep grooves 29 and the shallow grooves 28 are six in number, the return springs 11 are guaranteed not to be connected with the resisting blocks 16, and when the resisting blocks 16 are located in the wedge-shaped deep grooves 29, it can be ensured that the mounting 14 rotates without the fastener 6 rotating.
The lower extreme of dwang 23 extends to in the gear chamber 25 and installs spur gear 24, the lower extreme of dwang 23 is installed on the inner wall of gear chamber 25 through promoting ball bearing, the welding has connecting rod 19 on the lateral wall of mount pad 14, the one end of connecting rod 19 runs through fastener 6 and has welded stock 8, elongated slot 20 has been seted up on the mount pad 14, and elongated slot 20 and gear chamber 25 intercommunication, the through-hole has been seted up on the connecting rod 19, movable groove 17 has been seted up on the stock 8, and movable groove 17 and through-hole intercommunication, it is connected with sector gear 22 to rotate through pivot 21 on the inner wall of elongated slot 20, and sector gear 22 and the meshing of spur gear 24.
A plurality of antiskid pole 30 of symmetry fixedly connected with on the lateral wall of the one end that sector gear 22 was kept away from to stock 8 can increase the frictional force between user and the stock 8, and convenient to use person's application of force promotes stock 8.
A plurality of gear teeth are distributed on the sector gear 22, and the distribution angle of the gear teeth is more than 30 degrees, so that the rotation angle of the sector gear 22 is ensured to be more than the angle between the wedge-shaped deep groove 29 and the shallow groove 28 which are adjacent in position, and further can drive the rotating seat 13 to rotate by an angle, so that the position conversion of the wedge-shaped deep groove 29 and the shallow groove 28 relative to the abutting block 16 can be realized, the sector gear 22 is welded with the connecting rod 18, the connecting rod 18 passes through the through hole and is positioned in the movable slot 17, the long rod 8 is provided with an arc-shaped slot 27, the connecting rod 18 is welded with a pushing handle 9, and the pushing handle 9 passes through the arc-shaped slot 27 and extends outwards, the pushing handle 9 can move in the arc-shaped slot 27 within a certain range, and the rotation of the connecting rod 18 is realized by pushing the handle 9, so that the rotation of the sector gear 22 is realized, and the rotation of the rotating seat 13 is realized through the spur gear 24, so that the position change of the abutting block 16 is driven.
When the invention is used, a tin bath bottom brick 1 is seated into a screw rod 3, then a gasket 4 is sleeved on the screw rod 3, then a nut 5 is placed on the screw rod 3, then a fastening piece 6 is clamped on the nut 5 through a long rod 8, then a push handle 9 is adjusted, a connecting rod 18 is pushed to rotate through the movement of the push handle 9 in an arc-shaped groove 27, a sector gear 22 welded with the connecting rod 18 rotates around a rotating shaft 21, a straight-tooth cylindrical gear 24 meshed with the sector gear 22 rotates along with the rotation, a rotating seat 13 arranged on the same rotating rod 23 with the straight-tooth cylindrical gear 24 rotates along with the rotation, an inclined wall of a wedge-shaped deep groove 29 pushes an abutting block 16 to move towards a clamping groove 12 with a corresponding position, a side wall of the abutting block 16 extrudes a return spring 11, the return spring 11 is compressed, when a port of the abutting block 16 abuts against a shallow groove 28, the abutting block 16 abuts against the clamping groove 12, and the adjustment, then, the long rod 8 is pushed, the long rod 8 drives the mounting seat 14 to rotate through the connecting rod 19, and in the rotating process of the mounting seat 14, the fastening piece 6 is pushed to rotate through the abutting block 16 and the clamping groove 12, so that the nut 5 is locked.
When rotating certain angle and can not continue to rotate stock 8, reverse adjustment promotes handle 9 again, drive sector gear 22 reverse motion through connecting rod 18, straight-tooth spur gear 24 also reverse rotation thereupon, under the spring action that reset spring 11 resumes original length, support to establish in shallow slot 28 support piece 16 support establish into wedge deep trouth 29 in, then reverse rotation stock 8 again, stock 8 drives mount pad 14 reverse rotation through connecting rod 19, drive stock 8 and get back to initial condition, because support piece 16 has broken away from draw-in groove 12, then fastener 6 does not rotate, then nut 5 also does not rotate, can not influence the continuation locking of nut 5, repeatedly carry out above-mentioned operation and can lock nut 5.
Although the terms of the tin bath bottom brick 1, the tin bath bottom shell 2, the screw 3, the washer 4, the nut 5, the fastener 6, the mounting hole 7, the long rod 8, the pushing handle 9, the equipment cavity 10, the return spring 11, the clamping groove 12, the rotating seat 13, the mounting seat 14, the round cavity 15, the resisting block 16, the movable groove 17, the connecting rod 18, the connecting rod 19, the long groove 20, the rotating shaft 21, the sector gear 22, the rotating rod 23, the spur gear 24, the gear cavity 25, the cushion pad 26, the arc-shaped groove 27, the shallow groove 28, the wedge-shaped deep groove 29, the anti-skid rod 30 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides a nut mounting tool that is used for side opening fastening molten tin bath end brick, includes molten tin bath end brick (1), its characterized in that: the tin bath bottom brick comprises a tin bath bottom brick (1), wherein a mounting hole (7) is horizontally formed in the side wall of the tin bath bottom brick (1), a screw rod (3) is inserted into the tin bath bottom brick (1), a tin bath bottom shell (2) is welded at the lower end of the screw rod (3), a nut (5) is connected to the upper end of the tin bath bottom shell (2) in a threaded manner, a fastener (6) is clamped on the nut (5), an equipment cavity (10) is formed in the fastener (6), a plurality of clamping grooves (12) are symmetrically formed in the side wall of the equipment cavity (10), a plurality of reset springs (11) are fixedly connected to the inner side wall of each clamping groove (12), the other ends of the reset springs (11) are free, a mounting seat (14) is rotatably connected to the equipment cavity (10), a gear cavity (25), a circular cavity (15) and a plurality of placing grooves are formed in the mounting seat (14), and each placing groove, every equal sliding connection has support piece (16) in the standing groove, vertically install dwang (23) in round chamber (15), install on dwang (23) and rotate seat (13), the lower extreme of dwang (23) extends to in gear chamber (25) and installs straight spur gear (24), the welding has connecting rod (19) on the lateral wall of mount pad (14), the one end of connecting rod (19) runs through fastener (6) and welds stock (8), seted up elongated slot (20) on mount pad (14), and elongated slot (20) and gear chamber (25) intercommunication, the through-hole has been seted up on connecting rod (19), activity groove (17) have been seted up on stock (8), and activity groove (17) and through-hole intercommunication, rotate through pivot (21) on the inner wall of elongated slot (20) and be connected with sector gear (22), and sector gear (22) and straight spur gear (24) meshing, the welding has connecting rod (18) on sector gear (22), and connecting rod (18) pass the through-hole and lie in activity groove (17), arc wall (27) have been seted up on stock (8), the welding has push handle (9) on connecting rod (18), and push handle (9) pass arc wall (27) and outwards extend.
2. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 1, characterized in that: the screw rod (3) is sleeved with a gasket (4), and the gasket (4) is located between the nut (5) and the inner wall of the mounting hole (7).
3. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 1, characterized in that: the rotating seat (13) is provided with a plurality of wedge-shaped deep grooves (29) and a plurality of shallow grooves (28).
4. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 1, characterized in that: the lower surface of the fastener (6) is provided with a regular hexagonal groove matched with the nut (5), and the inner top wall of the regular hexagonal groove is fixedly connected with a cushion pad (26).
5. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 3, characterized in that: the number of the clamping grooves (12), the abutting blocks (16), the wedge-shaped deep grooves (29) and the shallow grooves (28) is six.
6. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 5, characterized in that: the sector gear (22) is distributed with a plurality of gear teeth, and the distribution angle of the gear teeth is larger than 30 degrees.
7. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 1, characterized in that: the side wall of one end of the long rod (8) far away from the sector gear (22) is symmetrically and fixedly connected with a plurality of anti-slip rods (30).
8. A nut setting tool for side hole fastening of a tin bath bottom block according to claim 1, characterized in that: the lower end of the rotating rod (23) is arranged on the inner wall of the gear cavity (25) through a push ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366407.9A CN109968285B (en) | 2019-05-05 | 2019-05-05 | Nut mounting tool for side hole fastening tin bath bottom brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910366407.9A CN109968285B (en) | 2019-05-05 | 2019-05-05 | Nut mounting tool for side hole fastening tin bath bottom brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109968285A CN109968285A (en) | 2019-07-05 |
| CN109968285B true CN109968285B (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910366407.9A Active CN109968285B (en) | 2019-05-05 | 2019-05-05 | Nut mounting tool for side hole fastening tin bath bottom brick |
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| CN (1) | CN109968285B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2993396A (en) * | 1960-05-20 | 1961-07-25 | Jr Louis J Lenci | Reversible ratchet socket wrench head |
| CN86203740U (en) * | 1986-06-08 | 1987-01-28 | 王琨 | Automic hydraulic lever |
| CN1055262C (en) * | 1998-03-05 | 2000-08-09 | 陈远宪 | Socket spanner capable of being rotated continuously in both front and back directions |
| CN1146489C (en) * | 2001-06-15 | 2004-04-21 | 陈远宪 | Fast two-way rotating fixed-torque spanner and its manufacture |
| WO2015058006A2 (en) * | 2013-10-16 | 2015-04-23 | Apex Brands, Inc. | Ratchet and socket assembly |
| CN103950014B (en) * | 2014-05-10 | 2016-05-25 | 蚌埠玻璃工业设计研究院 | A kind of nut erecting tools for the fastening bottom brick of molten tin bath of side opening |
| CN103951167B (en) * | 2014-05-10 | 2016-03-30 | 蚌埠玻璃工业设计研究院 | A kind of bottom brick of molten tin bath fixed sturcture and locking tool |
| CN108789243A (en) * | 2018-09-05 | 2018-11-13 | 上海优拜机械股份有限公司 | Axial disk ratchet skidding spanner |
| CN208773429U (en) * | 2018-09-10 | 2019-04-23 | 绍兴环洲工具制造有限公司 | A kind of hand-held tool ratchet accelerator |
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- 2019-05-05 CN CN201910366407.9A patent/CN109968285B/en active Active
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Effective date of registration: 20201020 Address after: Room 2603-2604, block B, Zheshang building, 103 science Avenue, hi tech Zone, Hefei City, Anhui Province Applicant after: Anhui zhishidai Software Service Co., Ltd Address before: 102488 No. 5, No. 2, No. 4, Xiyuan Village, Da'an Township, Fangshan District, Beijing Applicant before: Dong Lizhi |
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