CN203266531U - Ratchet wheel screwdriver - Google Patents
Ratchet wheel screwdriver Download PDFInfo
- Publication number
- CN203266531U CN203266531U CN 201320248362 CN201320248362U CN203266531U CN 203266531 U CN203266531 U CN 203266531U CN 201320248362 CN201320248362 CN 201320248362 CN 201320248362 U CN201320248362 U CN 201320248362U CN 203266531 U CN203266531 U CN 203266531U
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- CN
- China
- Prior art keywords
- control
- groove
- ratchet
- control strip
- control lever
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A ratchet wheel screwdriver comprises a control rod, a ratchet wheel rod and a clamp ring, wherein a first groove, a second groove, a third groove and a fourth groove are formed in a position of the rear part of the control rod, arranged in a cavity of the ratchet wheel rod and positioned on the circumference of the control rod in sequence, a control piece is arranged in each groove, the inner side ends of the four control pieces are fixed in the respective grooves, the control pieces can swing to left and right in the grooves, and the outer side ends of the four control pieces are of tooth forms, stretch out of the grooves, and are matched with ratchet wheels. According to the ratchet wheel screwdriver, through rotation of the clamp ring, the relative rotation, locking, clockwise or anticlockwise idling of the ratchet wheel rod and the control rod can be realized; the ratchet wheel screwdriver is simple in structure, convenient to process, assemble and disassemble, and can easily and conveniently realize rapid rotation, loosening and tightening of screws.
Description
Technical field
The utility model relates to a kind of screwdriver, particularly relates to a kind of ratchet screwdriver.
Background technology
Screwdriver is used for slack adjuster as a kind of handware commonly used, and common screwdriver generally includes handle, knife bar and cutter head, and the user drives knife bar by turning handle and cutter head rotates, and comes slack adjuster thereby cutter head drives screw turns.General screwdriver rely on manpower to rotate fully to use relatively effort and also direction wayward, may cause convolution to make service efficiency lower in rotation process.therefore, some occur and can realize the ratchet screwdriver of unidirectional idle running, as disclosed in Chinese patent " CN2307658Y " " hidden ratchet screw driver " and Chinese patent " CN2900088Y " disclosed " a kind of Combined ratchet screw driver ", the disclosed ratchet screwdriver of Chinese patent " CN2307658Y " comprises spring, extension bar and drive link and by positioning ratchet wheel, the ratchet group that left-hand ratchet and dextrad ratchet form, the parts such as location lug, the disclosed ratchet screwdriver of Chinese patent " CN2900088Y " comprises Connection Block, collar, brake block, the structures such as arcuated sliding bush, two ratchet screwdriver although it is so all can be realized the unidirectional idle running of this ratchet screwdriver, but these ratchet screwdriver complex structures, volume is larger, and assemble and make also relative complex, easily because damage or the disappearance of a finding cause the malfunctioning of screwdriver.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, high ratchet screwdriver of unidirectional idle running efficient.
the utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of ratchet screwdriver, comprise control lever, ratchet bar and collar, the front portion of described control lever connects extraneous driver bit, the rear portion hollow of described control lever and being inserted in the cavity of front portion of this ratchet bar, the medial surface of described cavity has ratchet, the rear portion of described ratchet bar is a junction, the rear portion of described control lever is inserted in this ratchet bar and partly is exposed to the cavity of this ratchet bar, one collar is placed in the outside of the cavity of the rear portion of this control lever and ratchet bar, it is characterized in that: the rear portion of described this control lever is positioned at the first groove that circumferentially sets gradually that has on the position of cavity of ratchet bar along control lever, the second groove, the 3rd groove and the 4th groove, respectively be provided with a control strip in described four grooves, be respectively the first control strip, the second control strip, the 3rd control strip and the 4th control strip, the medial extremity of described four control strips is fixed in separately groove and control strip can swing in groove, and the outboard end of these four control strips is profile of tooth and stretches out in groove and ratchet is complementary, and between the first control strip and the 4th control strip, having respectively Rectangular Spring between the second control strip and the 3rd control strip makes between the first control strip and the 4th control strip, and second have between control strip and the 3rd control strip respectively away from trend, the rear portion of described control lever is exposed to the blind hole of radially extending that has on the part of ratchet bar along this control lever, the steel ball that is provided with a spring in this blind hole and is positioned at the spring outside, this spring makes this steel ball have outside all the time trend, have three breach that circumferentially set gradually along this collar that match with this steel ball on this collar, described steel ball and this breach is complementary and can rotate between three breach.
Preferably, in described four grooves, any two adjacent groove parts are symmetrical with respect to the central shaft of this control lever, and any two grooves separately are with respect to the central shaft Central Symmetry of control lever.
Preferably, centered by described steel ball position, a side is the first, the 4th control strip and corresponding groove separately, and opposite side is second, third control strip and corresponding groove separately.
As preferred embodiment of the present utility model, described four groove medial extremitys are less, increase gradually towards outboard end.
Preferably, the cross section of the medial extremity of described four grooves is circular, the circle that the cross section of the medial extremity of described corresponding control strip also is complementary for the medial extremity with this groove.
Compared with prior art, the utility model has the advantage of that this ratchet screwdriver is by rotating collar, can realize the relative spin locking of ratchet bar and control lever, suitable or counterclockwise idle running, not only simple in structure, easy to process, and assembling and dismounting all very convenient, can realize the fast rotational degree of tightness of screw easy and conveniently.
Description of drawings
Fig. 1 is the side view of the utility model ratchet screwdriver.
Fig. 2 is that the utility model ratchet screwdriver is along the cutaway view of A-A line in Fig. 1.
Fig. 3 is the exploded view of the utility model ratchet screwdriver.
Fig. 4 is that the utility model ratchet screwdriver is along the cutaway view of B-B line in Fig. 1.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Ratchet screwdriver of the present utility model as shown in Fig. 1-4, comprises control lever 1, ratchet bar 2 and collar 3, and the front portion 11 of described control lever 1 connects outside driver bit, and rear portion 12 hollows of control lever 1 are connected with ratchet bar 2 and collar 3.The front portion of ratchet bar 2 is a cavity 21, and the medial surface of this cavity 21 has ratchet, and the rear portion of ratchet bar 2 is that a junction 22 connects extraneous handle or directly is available for users to use.The rear portion 12 of described control lever 1 is inserted in the cavity 21 of this ratchet bar 2, and the rear portion 12 of part control lever 1 is exposed to the cavity 21 of this ratchet bar 2, and collar 3 is placed in the outside of the cavity 21 of the rear portion 12 of this control lever 1 and ratchet bar 2.
The rear portion 12 of this control lever 1 is positioned on the position of cavity 21 of ratchet bar 2 and has four grooves, as shown in Figure 4, these four grooves are the first groove 121, the second groove 122 and the 3rd groove 123 and the 4th groove 124 along circumferentially setting gradually of control lever 1, and two groove parts adjacent in these four grooves are symmetrical with respect to the central shaft of this control lever 1.And in these four grooves, separately any two grooves are with respect to the central shaft Central Symmetry of this control lever 1.And these four grooves are all that medial extremity is less, the shape that increases gradually towards outboard end.Be inserted with respectively the first control strip 41, the second control strip 42, the 3rd control strip 43 and the 4th control strip 44 in these four grooves.The medial extremity of described four control strips is fixed in separately groove and control strip can swing in groove, and the outboard end of these four control strips is profile of tooth and stretches out in groove and ratchet is complementary.
Preferably, as shown in Figure 4, the cross section of the medial extremity of these four grooves is a circle, and the medial extremity of four control strips and the medial extremity of groove are complementary, and the outboard end of control strip is less, can swing in groove.The outboard end of these four control strips has profile of tooth, matches with ratchet on cavity 21 medial surfaces, can fasten with ratchet.Between these four control strips, between the first and the 4th control strip and between the second and the 3rd control strip, have respectively Rectangular Spring 7, make have between the first and the 4th control strip mutually away from trend, also have between the second and the 3rd control strip mutually away from trend.
The rear portion 12 of this control lever 1 is exposed to has a blind hole 126 of radially extending along this control lever 1 on the part of ratchet bar 2, the steel ball 6 that is provided with a spring 5 and is positioned at spring 5 outsides in this blind hole 126, this spring 5 make this steel ball 6 have outside all the time trend.Have three breach that circumferentially set gradually 31 along this collar that match with this steel ball 6 on this collar 3, make steel ball 6 can be contained in this breach 31, along with the rotation of control lever 1 turns to another breach 31 from a breach 31, to fix the position of this collar 3.
And the rotation of control lever 1 makes the movement of steel ball 6 between breach 31, rotation with control strip in groove matches, centered by steel ball 6 and blind hole 126 positions, a side is the first, the 4th control strip and groove, and opposite side is second, third control strip and groove.As shown in Figure 4, when steel ball 6 goes in the breach 31 of the rightmost side and locates, the side, below of this second groove 122 and the second control strip 42 offset, the side, top of the 4th groove 124 and the 4th control strip 44 offset, this moment, the outboard end of the second control strip 42 and the 4th control strip 44 was separated with ratchet respectively, and the second control strip 42 and the 4th control strip 44 respectively due to the 3rd control strip 43 and the first control strip 41 away from, so the outboard end of this first control strip 41 and the 3rd control strip 43 all contacts with ratchet.Therefore this ratchet bar 2 can only rotate counterclockwise with respect to this control lever 1.Vice versa, therefore can realize the relative one-directional rotation between ratchet bar 2 and control lever.During breach 31 when steel ball 6 in the middle of being positioned at, owing to all not acting between four grooves and control strip, therefore, the outboard end of control strip all fastens with ratchet, makes ratchet bar 2 can not do with respect to control lever 1 rotation of any direction.
This ratchet screwdriver is by rotating collar, can realize the relative spin locking of ratchet bar and control lever, suitable or counterclockwise idle running, not only simple in structure, easy to process, and assembling and dismounting all very convenient, can realize the fast rotational degree of tightness of screw easy and conveniently.
Claims (5)
1. ratchet screwdriver, comprise control lever (1), ratchet bar (2) and collar (3), the front portion (11) of described control lever (1) connects extraneous driver bit, rear portion (12) hollow of described control lever (1) and being inserted in the cavity (21) of front portion of this ratchet bar (2), the medial surface of described cavity (21) has ratchet, the rear portion of described ratchet bar (2) is a junction (22), the rear portion of described control lever (1) is inserted in this ratchet bar (2) and partly is exposed to the cavity (21) of this ratchet bar (2), one collar (3) is placed in the outside of the cavity (21) of the rear portion of this control lever (1) and ratchet bar (2), it is characterized in that: the rear portion (12) of described this control lever (1) is positioned at the first groove (121) that circumferentially sets gradually that has on the position of cavity (21) of ratchet bar (2) along control lever (1), the second groove (122), the 3rd groove (123) and the 4th groove (124), respectively be provided with a control strip in described four grooves, be respectively the first control strip (41), the second control strip (42), the 3rd control strip (43) and the 4th control strip (44), the medial extremity of described four control strips is fixed in separately groove and control strip can swing in groove, and the outboard end of these four control strips is profile of tooth and stretches out in groove and ratchet is complementary, and between the first control strip (41) and the 4th control strip (44), having respectively Rectangular Spring (7) between the second control strip (42) and the 3rd control strip (43) makes between the first control strip (41) and the 4th control strip (44), and second have between control strip (42) and the 3rd control strip (43) respectively away from trend, the rear portion (12) of described control lever (1) is exposed to the blind hole (126) of radially extending that has on the part of ratchet bar (2) along this control lever (1), the steel ball (6) that is provided with a spring (5) in this blind hole (126) and is positioned at spring (5) outside, this spring (5) makes this steel ball (6) have outside all the time trend, have three breach that circumferentially set gradually (31) along this collar that match with this steel ball (6) on this collar (3), described steel ball (6) and this breach (31) are complementary and can rotate between three breach.
2. ratchet screwdriver as claimed in claim 1, it is characterized in that: in described four grooves, any two adjacent groove parts are symmetrical with respect to the central shaft of this control lever (1), and any two grooves separately are with respect to the central shaft Central Symmetry of control lever (1).
3. ratchet screwdriver as claimed in claim 1 is characterized in that: centered by described steel ball (6) position, a side is the first, the 4th control strip and corresponding groove separately, and opposite side is second, third control strip and corresponding groove separately.
4. ratchet screwdriver as claimed in claim 1, it is characterized in that: described four groove medial extremitys are less, increase gradually towards outboard end.
5. ratchet screwdriver as claimed in claim 4 is characterized in that: the cross section of the medial extremity of described four grooves is for circular, the circle that the cross section of the medial extremity of described corresponding control strip also is complementary for the medial extremity with this groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320248362 CN203266531U (en) | 2013-05-06 | 2013-05-06 | Ratchet wheel screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320248362 CN203266531U (en) | 2013-05-06 | 2013-05-06 | Ratchet wheel screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203266531U true CN203266531U (en) | 2013-11-06 |
Family
ID=49497017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320248362 Expired - Fee Related CN203266531U (en) | 2013-05-06 | 2013-05-06 | Ratchet wheel screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203266531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714287A (en) * | 2022-04-29 | 2022-07-08 | 李庆贝 | Needle curtain screwdriver |
-
2013
- 2013-05-06 CN CN 201320248362 patent/CN203266531U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714287A (en) * | 2022-04-29 | 2022-07-08 | 李庆贝 | Needle curtain screwdriver |
| CN114714287B (en) * | 2022-04-29 | 2024-05-03 | 李庆贝 | Needle curtain screwdriver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170506 |