CN112756927A - Screwdriver head and manufacturing method thereof - Google Patents
Screwdriver head and manufacturing method thereof Download PDFInfo
- Publication number
- CN112756927A CN112756927A CN202110190296.8A CN202110190296A CN112756927A CN 112756927 A CN112756927 A CN 112756927A CN 202110190296 A CN202110190296 A CN 202110190296A CN 112756927 A CN112756927 A CN 112756927A
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- Prior art keywords
- sliding
- fixedly connected
- sleeve
- head body
- disc
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000007769 metal material Substances 0.000 claims description 14
- 238000005299 abrasion Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 20
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B25B15/00—Screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a screwdriver head and a manufacturing method thereof, and the screwdriver head comprises a sleeve, a sliding disc, a screwdriver head body, a connecting rod and a plurality of pushing components; the sleeve is provided with an accommodating cavity, a guide groove and a plurality of sliding grooves; the sliding disc is connected in the accommodating cavity in a sliding manner; the batch head body is fixedly connected with the sliding disc; the pushing assembly comprises a sliding rod, a bearing, a base and a screw rod; the sliding rod is fixedly connected to the side edge of the sliding disc; the bearing is fixedly connected to the side edge of the sliding rod; the base is fixedly connected to the side edge of the sleeve; the screw rod is in threaded connection with the base and is in rotary connection with the bearing; can make the screw rod remove in the base through rotating the screw rod to drive bearing and slide bar and remove, drive the slip disc through the slide bar and remove holding the intracavity, and then drive and criticize first body and remove, make can stretch out the length of guide way to criticizing first body and change, thereby can adjust holistic length, so that deal with various screw installation conditions.
Description
Technical Field
The invention relates to the technical field of screwdriver bits, in particular to a screwdriver bit and a manufacturing method of the screwdriver bit.
Background
Screwdriver head usually refers to the screwdriver head of screwing the screw on electric hand drill or electric hammer, and screwdriver head can be divided into a word, cross, rice word, star type, square head, hexagonal head, Y type head etc. according to different head types, but current screwdriver head length all is fixed, can't adjust the length of screwdriver head according to the installation to lead to having inconvenience when the installation screw.
Disclosure of Invention
The invention aims to provide a screwdriver head, and aims to solve the problem that the length of the conventional screwdriver head cannot be adjusted.
In order to achieve the above object, in a first aspect, the present invention provides a screwdriver bit, including a sleeve, a sliding disk, a bit body, a connecting rod and a plurality of pushing assemblies; the sleeve is provided with an accommodating cavity, a guide groove and a plurality of sliding grooves; the sleeve of the sliding disc is connected in a sliding mode and is positioned in the accommodating cavity; the batch head body is fixedly connected with the sliding disc, is in sliding connection with the sleeve and penetrates through the guide groove; the connecting rod is fixedly connected with the sleeve and is positioned on the side edge of the sleeve; the pushing assembly comprises a sliding rod, a bearing, a base and a screw rod; the sliding rod is fixedly connected with the sliding disc, is connected with the sliding groove in a sliding manner and penetrates through the sliding groove; the bearing is fixedly connected with the sliding rod and is positioned on one side of the sliding rod, which is far away from the sliding disc; the base is fixedly connected with the sleeve and is positioned on the side edge of the sleeve; the screw rod with the bearing is connected, and with base threaded connection, and run through the base.
Wherein, the screwdriver head also comprises a magnetic component; the magnetic attraction component is fixedly connected with the batch head body and is positioned on the side edge of the batch head body.
The magnetic suction assembly comprises a limiting disc, a first spring and a magnetic ring; the limiting disc is fixedly connected with the batch head body and is penetrated through by the batch head body; the first spring is fixedly connected with the limiting disc and is penetrated by the batch head body; the magnetic ring is fixedly connected with the first spring, is penetrated by the batch head body and is positioned on one side of the first spring, which is far away from the limiting disc.
Wherein the push assembly further comprises a knob; the knob is fixedly connected with the screw rod and is positioned at one end, far away from the bearing, of the knob.
Wherein the pushing assembly further comprises a scale; the scale is fixedly connected with the sleeve and is positioned on the side edge of the sleeve.
The screwdriver head further comprises an anti-abrasion layer; the anti-abrasion layer is fixedly connected with the sleeve and is positioned in the accommodating cavity.
In a second aspect, the invention also provides a manufacturing method of the screwdriver head, which comprises the steps of melting a metal material, pouring the melted metal material into a mold, and cooling to obtain a screwdriver head body, a sliding disc, a connecting rod, a sliding rod, a block body and a column body; drilling a threaded hole in the block body to obtain a base; cutting threads on the cylinder to obtain a screw rod; melting a metal material, pouring the molten metal material into a mold, and cooling to form a semi-tubular matrix; and respectively welding the screwdriver head body, the sliding disc, the plurality of sliding rods, the connecting rod, the two semi-tubular matrixes, the plurality of bearings, the plurality of bases and the plurality of screws to obtain the screwdriver head.
According to the screwdriver head and the manufacturing method of the screwdriver head, the connecting rod can be connected with the electric hammer or the electric hand drill; through rotating the screw rod can make the screw rod is in remove in the base to the drive the bearing with the slide bar removes, through the slide bar drives the sliding tray is in it removes to hold the intracavity, and then drives it is in to criticize first body remove in the guide way, make can be right it stretches out to criticize first body the length of guide way changes, thereby can adjust holistic length to in reply various screw installation condition. One end of the screwdriver head body, which is far away from the sliding disc, can be arranged into various shapes corresponding to the screws, such as a straight shape, a cross shape, a Chinese character 'mi' shape or a star shape, so as to meet the installation requirement; the screw can be adsorbed by the magnetic force of the magnetic ring so as to be convenient for mounting the screw, when the screw is mounted, the screw is driven by the screwdriver head body to move downwards continuously, and the magnetic ring can move together with the screwdriver head body and compress the first spring by virtue of the first spring and the limiting disc; after the screw is installed, the screwdriver head body moves upwards, and the second spring restores the original state and drives the magnetic ring to restore the original position so as to install the next screw. Through the scale, can be to the position of criticizing the first body carries out accurate adjustment to in the installation screw. Through the knob, can be convenient for the staff right the screw rod rotates to be convenient for adjust the position of criticizing the first body. Through the anti-abrasion layer, abrasion between the sliding disc and the sleeve can be avoided, and the service life is prolonged. Through the mode, the position of the batch head body can be adjusted according to the installation condition, so that the length of the whole part is changed, and the screw is convenient to install.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a screwdriver bit according to the present invention;
FIG. 2 is a front sectional view of a screwdriver bit according to the present invention;
FIG. 3 is a schematic structural view of the bit body and the magnetic attraction assembly according to the present invention;
fig. 4 is a flow chart of a method for manufacturing a screwdriver bit according to the present invention.
The device comprises a sleeve 1, a sliding disc 2, a batch head body 3, a connecting rod 4, a pushing assembly 5, a magnetic attraction assembly 6, an anti-abrasion layer 7, a fixing assembly 8, a sliding rod 51, a bearing 52, a base 53, a screw 54, a knob 55, a scale 56, a limiting disc 61, a first spring 62, a magnetic ring 63, a second spring 81, a clamping block 82, a threaded column 83, a threaded column 110, an accommodating cavity 111, a guide groove 112 and a sliding groove 112.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 3, the present invention provides a screwdriver head: comprises a sleeve 1, a sliding disc 2, a batch head body 3, a connecting rod 4 and a plurality of pushing components 5; the sleeve 1 has a housing cavity 110, a guide groove 111 and a plurality of sliding grooves 112; the sleeve 1 of the sliding disk 2 is connected in a sliding way and is positioned in the accommodating cavity 110; the batch head body 3 is fixedly connected with the sliding disc 2, is connected with the sleeve 1 in a sliding manner, and penetrates through the guide groove 111; the connecting rod 4 is fixedly connected with the sleeve 1 and is positioned on the side edge of the sleeve 1; the pushing assembly 5 comprises a sliding rod 51, a bearing 52, a base 53 and a screw 54; the sliding rod 51 is fixedly connected with the sliding disk 2, is connected with the sliding chute 112 in a sliding manner, and penetrates through the sliding chute 112; the bearing 52 is fixedly connected with the sliding rod 51 and is positioned on one side of the sliding rod 51 far away from the sliding disk 2; the base 53 is fixedly connected with the sleeve 1 and is positioned on the side edge of the sleeve 1; the screw 54 is rotatably connected to the bearing 52, is threadedly connected to the base 53, and penetrates the base 53.
In the present embodiment, the connecting rod 4 can be connected to an electric hammer or an electric hand drill; the screw rod 54 can be moved in the base 53 by rotating the screw rod 54, so that the bearing 52 and the slide rod 51 are driven to move, the slide rod 51 drives the slide disc 2 to move in the accommodating cavity 110, and then the batch head body 3 is driven to move in the guide groove 111, so that the length of the batch head body 3 extending out of the guide groove 111 can be changed, and the whole length can be adjusted, so that various screw installation conditions can be met. One end of the batch head body 3, which is far away from the sliding disc 2, can be arranged into various shapes corresponding to screws, such as a straight shape, a cross shape, a Chinese character 'mi' shape or a star shape, so as to meet the installation requirement; through the mode, the position of the batch head body 3 can be adjusted according to the installation condition, so that the length of the whole part is changed, and the installation of screws is facilitated.
Further, the screwdriver bit also comprises a magnetic suction component 6; the magnetic attraction component 6 is fixedly connected with the batch head body 3 and is positioned on the side edge of the batch head body 3.
In this embodiment, the magnetic component 6 can adsorb the screw, so as to facilitate the installation of the screw.
Further, the magnetic suction component 6 comprises a limiting disc 61, a first spring 62 and a magnetic ring 63; the limiting disc 61 is fixedly connected with the batch head body 3 and is penetrated by the batch head body 3; the first spring 62 is fixedly connected with the limiting disc 61 and is penetrated by the batch head body 3; the magnetic ring 63 is fixedly connected with the first spring 62, is penetrated by the batch head body 3, and is located on one side of the first spring 62 far away from the limiting disc 61.
In this embodiment, the magnetic force of the magnetic ring 63 can attract the screw to facilitate the installation of the screw, and when the screw is installed, the magnetic ring 63 can move together with the batch head body 3 and compress the first spring 62 by the first spring 62 and the limiting disc 61 as the batch head body 3 drives the screw to move down continuously; after the screw is installed, the bit body 3 moves upwards, and the second spring 81 restores to the original state and drives the magnetic ring 63 to restore to the original position, so that the next screw can be installed.
Further, the pushing assembly 5 further comprises a knob 55; the knob 55 is fixedly connected with the screw 54 and is located at one end of the knob 55 far away from the bearing 52.
In this embodiment, the knob 55 can facilitate the worker to rotate the screw 54, thereby facilitating the adjustment of the position of the bit body 3.
Further, the pushing assembly 5 further comprises a scale 56; the scale 56 is fixedly connected with the sleeve 1 and is positioned on the side edge of the sleeve 1.
In the present embodiment, the position of the bit body 3 can be precisely adjusted by the scale 56, so as to facilitate the installation of screws.
Further, the screwdriver head further comprises an anti-abrasion layer 7; the wear-resistant layer 7 is fixedly connected with the casing 1 and is located in the accommodating cavity 110.
In this embodiment, the wear-resistant layer 7 can prevent the sliding disk 2 and the sleeve 1 from being worn, thereby improving the service life.
Further, the screwdriver head further comprises a plurality of fixing components 8; the fixing components 8 are respectively movably connected with the sleeve 1 and are respectively positioned on the side edges of the sleeve 1.
In this embodiment, the bit body 3 can be fixed by the plurality of fixing assemblies 8, so that the bit body 3 is prevented from deviating during high-speed rotation to affect the screw installation effect.
Further, the fixing assembly 8 comprises a second spring 81, a clamping block 82 and a threaded column 83; the second spring 81 is fixedly connected with the sleeve 1 and is positioned in the accommodating cavity 110; the clamping block 82 is fixedly connected with the second spring 81 and is positioned on one side, far away from the sleeve 1, of the second spring 81; the threaded post 83 is threadedly coupled to the sleeve 1 and extends through the second spring 81 and the sleeve 1.
In this embodiment, the clamping blocks 82 can be pushed to move towards the bit body 3 by rotating the threaded columns 83, and the second springs 81 are stretched, so that the bit body 3 can be fixed by the clamping blocks 82, and the bit body 3 is prevented from deviating during high-speed rotation to affect the screw installation effect; when the position of the bit body 3 needs to be adjusted, the threaded column 83 can be far away from the bit body 3 by rotating the threaded column 83, and at this time, the second spring 81 can restore to the original state and drive the clamping block 82 to be far away from the bit body 3, so that the bit body 3 is not fixed any more.
In a second aspect, referring to fig. 4, the present invention further provides a method for manufacturing a screwdriver bit, including:
s101, melting a metal material, pouring the molten metal material into a mold, and cooling to obtain a batch head body 3, a sliding disc 2, a connecting rod 4, a sliding rod 51, a block body and a column body;
and melting the metal material, pouring the metal material into each specific mold, and cooling to form the batch head body 3, the sliding disc 2, the connecting rod 4, the sliding rod 51, the block body and the column body.
S102, drilling a threaded hole in the block body to obtain a base 53;
the block is clamped on a lathe, and a threaded hole is drilled in the block by using the lathe tool to manufacture the base 53.
S103, cutting threads on the cylinder to obtain a screw 54;
the cylinder is clamped on a lathe, turned by the lathe tool to form an external thread matching the threaded hole of the base 53, and the screw 54 is manufactured.
S104, pouring the molten metal material into a mold, and cooling to form a semi-tubular matrix;
and melting the metal material, pouring the metal material into a specific mold, and cooling to form the semi-tubular matrix.
S105, respectively welding the screwdriver bit body 3, the sliding disc 2, the plurality of sliding rods 51, the connecting rod 4, the two semi-tubular base bodies, the plurality of bearings 52, the plurality of bases 53 and the plurality of screws 54 to obtain the screwdriver bit.
Firstly welding the screwdriver head body 3, the sliding disc 2 and the plurality of sliding rods 51, then welding the two semi-tubular base bodies after wrapping the screwdriver head body 3 and the sliding disc 2 together, then respectively welding the plurality of bearings 52 on the side edges of the plurality of sliding rods 51, then respectively welding the plurality of bases 53 on the side edges of the two semi-tubular base bodies, and finally respectively welding and fixing the plurality of screw rods 54 with the plurality of bearings 52 after penetrating the plurality of bases 53 to obtain the screwdriver head.
The working principle and the using process of the invention are as follows: after the electric hammer is installed, the connecting rod 4 can be connected with an electric hammer or an electric hand drill; the screw rod 54 can be moved in the base 53 by rotating the screw rod 54, so that the bearing 52 and the slide rod 51 are driven to move, the slide rod 51 drives the slide disc 2 to move in the accommodating cavity 110, and then the batch head body 3 is driven to move in the guide groove 111, so that the length of the batch head body 3 extending out of the guide groove 111 can be changed, and the whole length can be adjusted, so that various screw installation conditions can be met. One end of the batch head body 3, which is far away from the sliding disc 2, can be arranged into various shapes corresponding to screws, such as a straight shape, a cross shape, a Chinese character 'mi' shape or a star shape, so as to meet the installation requirement; the screw can be adsorbed by the magnetic force of the magnetic ring 63 so as to be convenient for mounting the screw, and when the screw is mounted, the screw is driven by the screwdriver head body 3 to move downwards continuously, so that the magnetic ring 63 can move together with the screwdriver head body 3 and compress the first spring 62 by virtue of the first spring 62 and the limiting disc 61; after the screw is installed, the bit body 3 moves upwards, and the second spring 81 restores to the original state and drives the magnetic ring 63 to restore to the original position, so that the next screw can be installed. Through the scale 56, the position of the batch head body 3 can be accurately adjusted, so that screws can be conveniently installed. Through the knob 55, the screw 54 can be rotated by a worker, so that the position of the batch head body 3 can be adjusted conveniently. Through the anti-abrasion layer 7, abrasion between the sliding disc 2 and the sleeve 1 can be avoided, and the service life is prolonged. Through the mode, the position of the batch head body 3 can be adjusted according to the installation condition, so that the length of the whole part is changed, and the installation of screws is facilitated.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A screwdriver head is characterized by comprising a sleeve, a sliding disc, a screwdriver head body, a connecting rod and a plurality of pushing components; the sleeve is provided with an accommodating cavity, a guide groove and a plurality of sliding grooves; the sleeve of the sliding disc is connected in a sliding mode and is positioned in the accommodating cavity; the batch head body is fixedly connected with the sliding disc, is in sliding connection with the sleeve and penetrates through the guide groove; the connecting rod is fixedly connected with the sleeve and is positioned on the side edge of the sleeve; the pushing assembly comprises a sliding rod, a bearing, a base and a screw rod; the sliding rod is fixedly connected with the sliding disc, is connected with the sliding groove in a sliding manner and penetrates through the sliding groove; the bearing is fixedly connected with the sliding rod and is positioned on one side of the sliding rod, which is far away from the sliding disc; the base is fixedly connected with the sleeve and is positioned on the side edge of the sleeve; the screw rod with the bearing is connected, and with base threaded connection, and run through the base.
2. The screwdriver bit as recited in claim 1, further comprising a magnetic component; the magnetic attraction component is fixedly connected with the batch head body and is positioned on the side edge of the batch head body.
3. The screwdriver bit as recited in claim 2, wherein the magnetic assembly comprises a retaining plate, a first spring and a magnetic ring; the limiting disc is fixedly connected with the batch head body and is penetrated through by the batch head body; the first spring is fixedly connected with the limiting disc and is penetrated by the batch head body; the magnetic ring is fixedly connected with the first spring, is penetrated by the batch head body and is positioned on one side of the first spring, which is far away from the limiting disc.
4. The screwdriver bit as recited in claim 3, wherein said pushing assembly further comprises a knob; the knob is fixedly connected with the screw rod and is positioned at one end, far away from the bearing, of the knob.
5. The screwdriver bit as recited in claim 4, wherein said pushing assembly further comprises a scale; the scale is fixedly connected with the sleeve and is positioned on the side edge of the sleeve.
6. The screwdriver bit as recited in claim 5, wherein said screwdriver bit further comprises a wear layer; the anti-abrasion layer is fixedly connected with the sleeve and is positioned in the accommodating cavity.
7. A method for manufacturing a screwdriver bit, comprising:
after melting, pouring the metal material into a mold, and cooling to obtain a batch head body, a sliding disc, a connecting rod, a sliding rod, a block body and a column body;
drilling a threaded hole in the block body to obtain a base;
cutting threads on the cylinder to obtain a screw rod;
melting a metal material, pouring the molten metal material into a mold, and cooling to form a semi-tubular matrix;
and respectively welding the screwdriver head body, the sliding disc, the plurality of sliding rods, the connecting rod, the two semi-tubular matrixes, the plurality of bearings, the plurality of bases and the plurality of screws to obtain the screwdriver head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110190296.8A CN112756927A (en) | 2021-02-18 | 2021-02-18 | Screwdriver head and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110190296.8A CN112756927A (en) | 2021-02-18 | 2021-02-18 | Screwdriver head and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112756927A true CN112756927A (en) | 2021-05-07 |
Family
ID=75705603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110190296.8A Pending CN112756927A (en) | 2021-02-18 | 2021-02-18 | Screwdriver head and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112756927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696125A (en) * | 2021-08-27 | 2021-11-26 | 怀化海红盛电子科技有限公司 | Circuit board installation of adjustable stroke is with synchronous electricity in four corners criticize |
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|---|---|---|---|---|
| DE19616311C1 (en) * | 1996-04-24 | 1997-06-26 | Abb Patent Gmbh | Device for changing screw tool |
| CN1243059A (en) * | 1998-07-29 | 2000-02-02 | 乔布斯特·乌尔里克·盖勒特 | Method for producing injection-formed split assembled mould with thread and capable of cooling |
| US6155143A (en) * | 1998-08-03 | 2000-12-05 | Wu; Shu-Te | Screwdriver having expanding and folding actions |
| US6155144A (en) * | 1999-08-02 | 2000-12-05 | Lin; Hsing Tai | Retractable driving tool |
| CN202895092U (en) * | 2012-11-02 | 2013-04-24 | 南通海迈五金有限公司 | Multifunctional wrench tool |
| US8539865B1 (en) * | 2011-08-30 | 2013-09-24 | Andreas Zimmerman | Hex drive screw holder |
| CN203818042U (en) * | 2014-01-01 | 2014-09-10 | 林群富 | Connecting rod length adjustable socket spanner |
| CN205148188U (en) * | 2015-11-26 | 2016-04-13 | 乐清市锋强工具制造有限公司 | Head is criticized to magnetosphere |
| CN105798598A (en) * | 2016-04-26 | 2016-07-27 | 济南鑫捷瑞电气有限公司 | Magnetic suspension type stretchable screwdriver head assembly used for tightening screw |
| CN210189631U (en) * | 2019-05-29 | 2020-03-27 | 广东电网有限责任公司 | Telescopic screwdriver |
| CN210819314U (en) * | 2019-10-22 | 2020-06-23 | 浙江胜达实业股份有限公司 | Screwdriver with adjustable length of tool bit |
| CN211306150U (en) * | 2019-12-18 | 2020-08-21 | 山东东华世嘉建筑装饰工程有限公司 | Self-tapping screw drill |
-
2021
- 2021-02-18 CN CN202110190296.8A patent/CN112756927A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19616311C1 (en) * | 1996-04-24 | 1997-06-26 | Abb Patent Gmbh | Device for changing screw tool |
| CN1243059A (en) * | 1998-07-29 | 2000-02-02 | 乔布斯特·乌尔里克·盖勒特 | Method for producing injection-formed split assembled mould with thread and capable of cooling |
| US6155143A (en) * | 1998-08-03 | 2000-12-05 | Wu; Shu-Te | Screwdriver having expanding and folding actions |
| US6155144A (en) * | 1999-08-02 | 2000-12-05 | Lin; Hsing Tai | Retractable driving tool |
| US8539865B1 (en) * | 2011-08-30 | 2013-09-24 | Andreas Zimmerman | Hex drive screw holder |
| CN202895092U (en) * | 2012-11-02 | 2013-04-24 | 南通海迈五金有限公司 | Multifunctional wrench tool |
| CN203818042U (en) * | 2014-01-01 | 2014-09-10 | 林群富 | Connecting rod length adjustable socket spanner |
| CN205148188U (en) * | 2015-11-26 | 2016-04-13 | 乐清市锋强工具制造有限公司 | Head is criticized to magnetosphere |
| CN105798598A (en) * | 2016-04-26 | 2016-07-27 | 济南鑫捷瑞电气有限公司 | Magnetic suspension type stretchable screwdriver head assembly used for tightening screw |
| CN210189631U (en) * | 2019-05-29 | 2020-03-27 | 广东电网有限责任公司 | Telescopic screwdriver |
| CN210819314U (en) * | 2019-10-22 | 2020-06-23 | 浙江胜达实业股份有限公司 | Screwdriver with adjustable length of tool bit |
| CN211306150U (en) * | 2019-12-18 | 2020-08-21 | 山东东华世嘉建筑装饰工程有限公司 | Self-tapping screw drill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696125A (en) * | 2021-08-27 | 2021-11-26 | 怀化海红盛电子科技有限公司 | Circuit board installation of adjustable stroke is with synchronous electricity in four corners criticize |
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