CN108942766B - Manual bidirectional self-shifting accelerating screwdriver - Google Patents
Manual bidirectional self-shifting accelerating screwdriver Download PDFInfo
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- CN108942766B CN108942766B CN201810936085.2A CN201810936085A CN108942766B CN 108942766 B CN108942766 B CN 108942766B CN 201810936085 A CN201810936085 A CN 201810936085A CN 108942766 B CN108942766 B CN 108942766B
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- gear
- guide rail
- handle
- plum
- fixing frame
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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
- B25B17/00—Hand-driven gear-operated wrenches or screwdrivers
-
- 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
- B25B15/02—Screwdrivers operated by rotating the handle
-
- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, 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 manual bidirectional self-shifting accelerating screwdriver which comprises a handle, wherein one end of the handle is connected with a rotating cap in a matching manner, the other end of the handle contracts in the radial direction and is connected with one end of a tool bit magnetic absorption groove through a bearing, and a tool bit is absorbed at the other end of the tool bit magnetic absorption groove; the rotating cap is communicated with the inside of the handle and is provided with an accelerating gear mechanism, the accelerating gear mechanism is fixedly connected with one side surface of the upper cover of the plum-shaped cam, which is provided with the convex rod, the other side surface of the upper cover of the plum-shaped cam is connected with one end of a guide rail rod, the other end of the guide rail rod penetrates through an inner ring of the bearing and is fixedly connected with the magnetic suction groove of the tool bit to form a whole, and the guide rail rod is connected with the other end of the handle in a rotating. According to the screwdriver disclosed by the invention, the tail part rotating cap is propped against by the hand of a user, when the handle is rotated in any direction, the accelerating mechanism is started to realize the accelerated rotation of the screwdriver head, and when the palm of the hand is separated from the rotating cap, the operation process of fastening the nail is realized. The use is light and natural, greatly improves the operating efficiency, and two states are switched at will, convenient to use.
Description
Technical Field
The invention belongs to the technical field of screwdrivers, and relates to a manual bidirectional self-shifting accelerating screwdriver.
Background
At present, the common screwdriver used by people adopts an operation mode that the handle rotates for one circle and the screwdriver head rotates for one circle, the problem of repeated operation in the screw loosening and screwing stage cannot be solved, the required screwing force in the loosening and screwing stage in the screw fastening operation is small, the number of repeated screwing circles is large, the consumed time is long, and the consumption of time and energy of a user is undoubtedly huge.
Disclosure of Invention
The invention aims to provide a manual bidirectional self-shifting accelerating screwdriver, which solves the problems that the conventional screwdriver is large in repeated screwing times and long in consumed time in the using process.
The technical scheme adopted by the invention is that the manual bidirectional automatic gear shifting accelerating screwdriver comprises a handle, wherein one end of the handle is connected with a rotating cap in a matching manner, the other end of the handle contracts in the radial direction and is connected with one end of a magnetic suction groove of a screwdriver head through a bearing, and the screwdriver head is adsorbed at the other end of the magnetic suction groove of the screwdriver head;
the rotating cap is communicated with the inside of the handle and is provided with an accelerating gear mechanism, the accelerating gear mechanism is fixedly connected with one side surface of the upper cover of the plum-shaped cam, which is provided with the convex rod, the other side surface of the upper cover of the plum-shaped cam is connected with one end of a guide rail rod, the other end of the guide rail rod penetrates through an inner ring of the bearing and is fixedly connected with the magnetic suction groove of the tool bit to form a whole, and the guide rail rod is connected with the other end of the handle in a rotating.
Yet another feature of the present invention is that,
the central part of the inner part of the rotating cap is provided with a cylindrical bulge for connecting the inner ring of the bearing A, the accelerating gear mechanism comprises a gear upper fixing frame and a gear lower fixing frame, the gear upper fixing frame is connected with the rotating cap through the outer ring of the bearing A, a plurality of supporting columns are uniformly distributed between the gear upper fixing frame and the gear lower fixing frame along the circumference at intervals, the rotating cap is fixedly connected with the gear carrier through the supporting columns which are penetrated by screws, three planetary gears are uniformly arranged between the gear upper fixing frame and the gear lower fixing frame along the circumference, each planetary gear is meshed with a central gear, a convex rod of a plum-shaped cam upper cover penetrates through the inner ring of the bearing A in the center of the lower gear fixing frame and is connected with the central gear in a key mode, and the plum-shaped cam upper.
The gear lower fixing frame is provided with bulges at intervals on the outer circumferential wall, and the inner wall of the handle is provided with a groove matched with the bulges and used for being matched and connected with the gear lower fixing frame.
Six bosses with trapezoidal sections are uniformly arranged on one end face of the guide rail rod along the circumference, six round holes are formed in the center of each boss, and the upper cover of the plum cam is aligned with the guide rail rod in a magnetic matching way through six magnets; a triangular groove is formed in the center of the guide rail rod, and a triangular twisting head is arranged in the center of the other side face of the plum cam upper cover and used for driving the guide rail rod to rotate through the triangular groove formed in the center of the guide rail rod when the plum cam upper cover rotates by 25 degrees; an ejection sliding block is clamped between the upper cover of the plum cam and the guide rail rod, and the ejection sliding blocks are uniformly positioned between every two adjacent magnets.
The outer wall of each ejection sliding block is provided with teeth, and the positions where the inner wall of the handle is connected with the ejection sliding blocks are evenly provided with the teeth for being meshed with the ejection sliding blocks.
Each ejection sliding block is fixedly connected with a cylindrical protrusion at one end close to the upper cover of the plum-shaped cam and is used for being clamped into the plum-shaped groove of the upper cover of the plum-shaped cam, and the inner edge of the plum-shaped groove is tangent to three corners of the triangular twisting head.
The inner wall of the handle is provided with an inner gear ring along the circumference, and 12 magnets are arranged on the outer side of the guide rail surface of the guide rail rod to assist the guide rail rod in positioning so that the track port of the guide rail rod corresponds to the tooth socket of the gear ring on the inner wall of the handle.
The manual bidirectional self-shifting accelerating screwdriver has the beneficial effects that the problems that the existing screwdriver is large in repeated ring screwing times and long in consumed time in the using process are solved, and an extremely reasonable man-machine interaction using mode is provided under the condition of having a stable accelerating transmission ratio through the accelerating mechanism, so that the operating time of a user is saved, and the using comfort and the operating smoothness are improved.
Drawings
FIG. 1 is a schematic view of the appearance of a manual bidirectional self-shifting accelerator screwdriver according to the present invention;
FIG. 2 is a sectional view of the manual bidirectional automatic gearshift accelerating screwdriver of the present invention;
FIG. 3 is a schematic view of a manual bidirectional self-shifting accelerating screwdriver according to the present invention;
FIG. 4 is a schematic cross-sectional view of one end of a guide rail rod of a manual bidirectional self-shifting accelerating screwdriver according to the present invention;
fig. 5 is a schematic cross-sectional view of one end of the upper cap of the quincunx cam of the manual bidirectional self-shifting accelerating screwdriver of the invention.
In the figure, 1, a rotating cap, 2, a handle, 3, a cutter head magnetic absorption groove, 4, a cutter head, 5, a bearing, 6, a guide rail rod, 7, a magnet, 8, an ejection sliding block, 9, a plum-shaped cam upper cover, 10, a gear lower fixing frame, 11, a supporting column, 12, a planetary gear, 13, a gear upper fixing frame, 14, a screw and 15, a central gear are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a manual bidirectional self-shifting accelerating screwdriver, which comprises a handle 2, wherein one end of the handle 2 is connected with a rotating cap 1 in a matching way, the other end of the handle 2 contracts in the radial direction and is connected with one end of a tool bit magnetic absorption groove 3 through an outer ring of a bearing 5, and a tool bit 4 is adsorbed at the other end of the tool bit magnetic absorption groove 3;
the rotating cap 1 is communicated with the inside of the handle 2 and is provided with an accelerating gear mechanism, the accelerating gear mechanism is fixedly connected with one side surface of the plum-shaped cam upper cover 9 with a convex rod, the other side surface of the plum-shaped cam upper cover 9 is connected with one end of a guide rail rod 6, the other end of the guide rail rod 6 penetrates through an inner ring of a bearing 5 and is fixedly connected with the cutter head magnetic absorption groove 3 to form a whole, and the guide rail rod 6 is connected with the other end of the handle 2 through an outer ring of the bearing 5 in a rotating matching way.
The center inside the rotating cap 1 is provided with a cylindrical bulge for connecting an inner ring of a bearing A, the accelerating gear mechanism comprises a gear upper fixing frame 13 and a gear lower fixing frame 10, the gear upper fixing frame 13 is connected with the rotating cap 1 through an outer ring of the bearing A, a plurality of supporting columns 11 are uniformly distributed between the gear upper fixing frame 13 and the gear lower fixing frame 10 at intervals along the circumference, the rotating cap 1 and the gear upper fixing frame 13 are connected with the gear lower fixing frame 10 through screws 14 penetrating through supporting columns 11, three planetary gears 12 are uniformly arranged between the gear upper fixing frame 13 and the gear lower fixing frame 10 along the circumference, each planetary gear 12 is meshed with a central gear 15, a convex rod of a plum-shaped cam upper cover 9 penetrates through an inner ring of a bearing A in the center of the gear lower fixing frame 10 to be connected with the central gear 15 in a key mode, and the plum-shaped cam upper cover 9 is fixed with the gear lower fixing frame 10 through screws and three magnets 7.
The circumference outer wall of the gear lower fixing frame 10 is provided with bulges at intervals, and the inner wall of the handle 2 is provided with a groove matched with the bulges and used for being matched and connected with the gear lower fixing frame 10.
As shown in fig. 4 and 5, six bosses with trapezoidal cross sections are uniformly arranged on one end surface of the guide rail rod 6 along the circumference, six circular holes are formed in the center of each boss, and the plum cam upper cover 9 is magnetically connected with the guide rail rod 6 through six magnets 7; a triangular groove is formed in the center of the guide rail rod 6, and a triangular twisting head is arranged in the center of the other side face of the plum cam upper cover 9 and used for driving the guide rail rod 6 to rotate through the triangular groove formed in the center of the guide rail rod 6 when the plum cam upper cover 9 rotates by 25 degrees; an ejection slide block 8 is clamped between the upper cover 9 of the plum cam and the guide rail rod 6, and the ejection slide blocks 8 are uniformly positioned between every two adjacent magnets 7.
The outer wall of each ejection sliding block 8 is provided with teeth, and the positions where the inner wall of the handle 2 is connected with the ejection sliding blocks 8 are evenly provided with the teeth for being meshed with the ejection sliding blocks 8.
The inner wall of the handle 2 is provided with an inner gear ring along the circumference, and the 12 magnets 7 are arranged outside the guide rail surface of the guide rail rod 6 to assist the guide rail rod 6 in positioning, so that the rail opening of the guide rail rod 6 corresponds to the tooth socket of the gear ring on the inner wall of the handle 2 to prepare for realizing the subsequent braking function.
Each ejecting slide block 8 is fixedly connected with a cylindrical bulge at one end close to the plum-shaped cam upper cover 9 and is used for being clamped into a plum-shaped groove of the plum-shaped cam upper cover 9, the inner edge of the plum-shaped groove is tangent to three corners of the triangular twisting head, the base of the ejecting slide block 8 is limited through the guide rail rod 6, and when the cam upper cover 9 rotates, the ejecting slide block 8 moves inwards or outwards in the radial direction along with the cam upper cover.
The outer walls of the rotating cap 1 and the handle 2 are both provided with grooves for preventing skidding.
The working principle of the manual bidirectional automatic gear shifting accelerating screwdriver is that each ejection slide block 8 is close to a plum-shaped cam upper cover 9, cylindrical protrusions are arranged on the ejection slide blocks 8 and used for being clamped into plum-shaped grooves of the plum-shaped cam upper cover 9, when the plum-shaped cam upper cover 9 and a guide rail rod 6 are aligned through an upper group of magnets 7 and a lower group of magnets 7, the ejection slide blocks 8 are located on the outermost side tracks of the plum-shaped grooves of the plum-shaped cam upper cover 9 under the action of the upper and lower groups of magnets 3 and 6, the ejection slide blocks 8 are clamped into tooth grooves of an inner gear ring on the inner wall of a handle 2, a braking function is started, the guide rail rod 6 and the handle 2 are clamped into a whole, and the screwdriver accelerating function is closed because a screwdriver bit 4 is fixed on the guide rail rod 6 through a bit magnetic suction groove 3, and no difference exists. When the rotating cap 1 and the handle 2 are rotated forward or backward, under the action of the planetary gear 12 and the central gear 15, the plum cam upper cover 9 rotates, the guide rail rod 6 is kept still under the action of two groups of magnets 7 with the number of 12 and 6, at this time, the plum cam upper cover 9 rotates relatively, 6 ejecting sliders 8 move in the inner radial direction and are separated from the tooth spaces of the inner ring gear on the inner wall of the handle 2, when the relative movement distance reaches 25 degrees, the cylindrical surface of the triangular prism of the plum cam upper cover 9 is just abutted to the triangular star-shaped groove on the guide rail rod 6, at this time, the ejecting sliders 8 are completely separated from the tooth spaces of the inner ring gear on the inner wall of the handle 2, the braking function is released, the plum cam upper cover 9 drives the guide rail rod 6 to rotate, and the cutter head 4 is fixed on the guide rail rod 6 through the cutter head magnetic absorption groove 3. The cutter head 4 is thus also rotated, and an acceleration function is realized by the action of the planetary gears 12 and the sun gear 15.
The use method of the manual bidirectional automatic gear shifting accelerating screwdriver comprises the steps that when the manual bidirectional automatic gear shifting accelerating screwdriver is used, the palm of a user is required to support the tail rotating cap 1 (palm pressure is only used for providing friction force), the screwdriver handle 2 is rotated in any direction, so that the tail rotating cap 1 and the screwdriver handle 2 are relatively rotated, at the moment, under the action of the magnet 7 serving as an adsorption positioning effect and the plum cam upper cover 9, the ejection sliding block 8 is inwards retracted and separated from a gear ring on the inner wall of the screwdriver handle 2, the braking effect is invalid, at the moment, an accelerating mechanism formed by the central gear 15, the planetary gear 12 and an inner gear ring on the rotating cap 1 is started, and the tool bit is accelerated and rotated; when the palm of the hand is separated from the rotating cap, the ejection slide block 8 is ejected outwards under the action of the magnet 7 and the plum cam upper cover 9 and is meshed with the gear ring on the inner wall of the screwdriver handle 2, the braking effect is started, the tail rotating cap 1 and the screwdriver handle 2 synchronously rotate at the moment, and the screwdriver is automatically recovered to be a common screwdriver with synchronously rotated handle bits.
The invention can enable a user to switch between the two states of the accelerating screwdriver and the common screwdriver at will and perfectly fit the operation process of screw fastening. The whole product is driven by a pure machine, the use is easy and natural, and the operation efficiency is greatly improved.
Claims (3)
1. The manual bidirectional self-shifting accelerating screwdriver is characterized by comprising a handle (2), wherein one end of the handle (2) is connected with a rotating cap (1) in a matching mode, the other end of the handle (2) contracts in the radial direction and is connected with one end of a tool bit magnetic absorption groove (3) through a bearing (5), and a tool bit (4) is adsorbed at the other end of the tool bit magnetic absorption groove (3);
the rotating cap (1) is communicated with the inside of the handle (2) and is provided with an accelerating gear mechanism, the accelerating gear mechanism is fixedly connected with one side face of the plum cam upper cover (9) with a convex rod, the other side face of the plum cam upper cover (9) is connected with one end of a guide rail rod (6), the other end of the guide rail rod (6) penetrates through an inner ring of the bearing (5) and is fixedly connected with the cutter head magnetic absorption groove (3) to form a whole, and the guide rail rod (6) is connected with the other end of the handle (2) through an outer ring of the bearing (5) in a rotating matching manner;
the inner center of the rotating cap (1) is provided with a cylindrical bulge for connecting an inner ring of a bearing A, the accelerating gear mechanism comprises a gear upper fixing frame (13) and a gear lower fixing frame (10), the gear upper fixing frame (13) is connected with the rotating cap (1) through an outer ring of the bearing A, a plurality of supporting columns (11) are uniformly distributed between the gear upper fixing frame (13) and the gear lower fixing frame (10) along the circumference at intervals, screws (14) penetrate through the supporting columns (11) to enable the rotating cap (1) and the gear upper fixing frame (13) to be connected with the gear lower fixing frame (10), three planetary gears (12) are uniformly arranged between the gear upper fixing frame (13) and the gear lower fixing frame (10) along the circumference, each planetary gear (12) is meshed with a central gear (15), and a convex rod of the plum-shaped cam upper cover (9) penetrates through the inner ring of the bearing A at the center of the gear lower fixing frame (10) The upper cover (9) is connected with the central gear (15) in a key way, and is fixed with the lower gear fixing frame (10) through screws and three magnets (7);
six bosses with trapezoidal sections are uniformly arranged on one end face of the guide rail rod (6) along the circumference, six round holes are formed in the center of each boss, and the plum cam upper cover (9) is in magnetic matching alignment with the guide rail rod (6) through six magnets (7); a triangular groove is formed in the center of the guide rail rod (6), and a triangular twisting head is arranged in the center of the other side face of the plum cam upper cover (9) and used for driving the guide rail rod (6) to rotate through the triangular groove formed in the center of the guide rail rod (6) when the plum cam upper cover (9) rotates by 25 degrees; an ejection sliding block (8) is clamped between the upper cover (9) of the plum cam and the guide rail rod (6), and the ejection sliding blocks (8) are uniformly positioned between every two adjacent magnets (7);
the outer wall of each ejection sliding block (8) is provided with teeth, and the positions where the inner wall of the handle (2) is connected with the ejection sliding blocks (8) are uniformly provided with the teeth for being meshed with the ejection sliding blocks (8);
each ejection sliding block (8) is fixedly connected with a cylindrical protrusion at one end close to the plum-shaped cam upper cover (9) and used for being clamped into a plum-shaped groove of the plum-shaped cam upper cover (9), and the inner edge of the plum-shaped groove is tangent to three angles of the triangular twisting head.
2. The manual bidirectional automatic gear shifting accelerating screwdriver according to claim 1, wherein the circumferential outer wall of the gear lower fixing frame (10) is provided with protrusions at intervals, and the inner wall of the handle (2) is provided with a groove matched with the protrusions on the circumferential outer wall of the gear lower fixing frame (10) and used for being matched and connected with the gear lower fixing frame (10).
3. The manual bidirectional automatic gear shifting accelerating screwdriver according to claim 1 is characterized in that an inner gear ring is arranged on the inner wall of the handle (2) along the circumference, and 12 magnets (7) are arranged and located on the outer side of the guide rail surface of the guide rail rod (6) to assist the guide rail rod (6) in positioning, so that the track opening of the guide rail rod (6) corresponds to the tooth socket of the gear ring on the inner wall of the handle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810936085.2A CN108942766B (en) | 2018-08-16 | 2018-08-16 | Manual bidirectional self-shifting accelerating screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810936085.2A CN108942766B (en) | 2018-08-16 | 2018-08-16 | Manual bidirectional self-shifting accelerating screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108942766A CN108942766A (en) | 2018-12-07 |
| CN108942766B true CN108942766B (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810936085.2A Active CN108942766B (en) | 2018-08-16 | 2018-08-16 | Manual bidirectional self-shifting accelerating screwdriver |
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| Country | Link |
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| CN (1) | CN108942766B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110039480A (en) * | 2019-05-20 | 2019-07-23 | 张玉林 | Efficient speed screwdriver |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5406866A (en) * | 1992-02-06 | 1995-04-18 | Badiali; John A. | Speed-selectable screwdriver |
| US5924339A (en) * | 1998-03-03 | 1999-07-20 | Huang; Chin-Tan | Screwdriver |
| CN202462319U (en) * | 2012-01-17 | 2012-10-03 | 工丰企业股份有限公司 | Speedup structure of ratchet screwdriver |
| CN103507007B (en) * | 2013-10-23 | 2016-05-11 | 浙江三鼎工具有限公司 | Multiple running ratchet train |
| CN103522247B (en) * | 2013-10-23 | 2016-06-29 | 浙江三鼎工具有限公司 | Multiple rotation ratchet wheel screwdriver handle |
| CN103878725B (en) * | 2014-04-17 | 2015-11-25 | 梁青松 | A kind of acceleration screwdriver |
| CN105437126A (en) * | 2015-12-23 | 2016-03-30 | 天津职业技术师范大学 | Acceleration screwdriver |
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2018
- 2018-08-16 CN CN201810936085.2A patent/CN108942766B/en active Active
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| CN108942766A (en) | 2018-12-07 |
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