CN114483809A - Self-locking ratchet wheel of clutch and processing device thereof - Google Patents
Self-locking ratchet wheel of clutch and processing device thereof Download PDFInfo
- Publication number
- CN114483809A CN114483809A CN202210121164.4A CN202210121164A CN114483809A CN 114483809 A CN114483809 A CN 114483809A CN 202210121164 A CN202210121164 A CN 202210121164A CN 114483809 A CN114483809 A CN 114483809A
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- self
- ratchet
- locking
- sleeve
- shaft sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
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- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention discloses a clutch self-locking ratchet wheel and a processing device thereof, wherein the clutch self-locking ratchet wheel comprises a shaft sleeve, a self-locking coil spring and a ratchet sleeve, convex ribs are arranged on the inner wall of the shaft sleeve, an oil storage tank is arranged between the convex ribs, and ratchets are arranged on the outer wall of the ratchet sleeve; the self-locking coil spring is in clearance fit with the outer wall of the shaft sleeve, the ratchet sleeve is sleeved outside the shaft sleeve and the self-locking coil spring and axially limited, the self-locking end of the self-locking coil spring is embedded into a spring clamping groove in the inner wall of the ratchet sleeve, and the locking direction of the self-locking coil spring is consistent with the reverse direction of the ratchet; the self-locking structure has the advantages that the self-locking structure is changed into an assembly structure and is separated into the shaft sleeve, the self-locking coil spring and the ratchet sleeve, namely the self-locking structure is additionally arranged in the ratchet wheel, so that the ratchet sleeve and the shaft sleeve have certain freedom degree, the self-locking structure has certain time interval from loosening to locking or from locking to loosening, certain buffering time is provided for the pawl to cut in or separate from the pawl, the collision strength of the pawl and the ratchet is reduced, the reliability of the ratchet wheel and the pawl is enhanced, and the stability of function switching of the washing machine is improved.
Description
Technical Field
The invention belongs to the technical field of washing machine clutch parts and processing equipment thereof, and particularly relates to a clutch self-locking ratchet wheel and a processing device thereof.
Background
A washing machine is a cleaning appliance for washing laundry using mechanical action of electric energy generation, and is applied to every home. The washing machine adopts a clutch to switch washing and dewatering functions, the common double-power washing machine adopts a ratchet wheel and a pawl to control the state of the clutch, the clutch is in a separation state after the pawl cuts into the ratchet wheel, and a transmission shaft enables a dewatering shaft and a washing shaft to rotate reversely through a planetary gear train to realize the washing function; when the pawl is disengaged from the ratchet wheel, the clutch is in a closed state, and the transmission shaft enables the dewatering shaft and the washing shaft to synchronously rotate through the clutch to achieve the dewatering function. The pawl collides with the ratchet on the ratchet when cutting into or disengaging from the ratchet, and the ratchet or the pawl is not strong enough to be broken, resulting in switching failure, i.e. the reliability of the ratchet and the pawl determines the stability of the function of the washing machine, and how to reduce the collision strength of the pawl and the ratchet becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-locking ratchet wheel of a clutch, wherein when a pawl cuts into or disengages from the ratchet wheel, the collision strength between the pawl and the ratchet is weak.
The technical scheme adopted by the self-locking ratchet wheel of the clutch for solving the technical problems is as follows: a clutch self-locking ratchet comprises a shaft sleeve, a self-locking coil spring and a ratchet sleeve, wherein a plurality of convex ribs are arranged on the inner wall of the shaft sleeve, an oil storage tank is arranged between the convex ribs, and a ratchet is arranged on the outer wall of the ratchet sleeve; the self-locking coil spring is in clearance fit with the outer wall of the shaft sleeve, the ratchet sleeve is sleeved outside the shaft sleeve and the self-locking coil spring, the ratchet sleeve and the shaft sleeve are axially limited, the control end of the self-locking coil spring is embedded into a spring clamping groove in the inner wall of the ratchet sleeve, and the locking direction of the self-locking coil spring is consistent with the reverse rotation direction of the ratchet.
Compared with the prior art, the self-locking ratchet wheel of the clutch has the advantages that the ratchet wheel is changed into an assembly structure and is divided into a shaft sleeve, a self-locking coil spring and a ratchet sleeve, the self-locking coil spring is in clearance fit with the outer wall of the shaft sleeve, the ratchet sleeve is sleeved outside the shaft sleeve and the self-locking coil spring, the ratchet sleeve and the shaft sleeve are axially limited, the control end of the self-locking coil spring is embedded into a clamp spring groove in the inner wall of the ratchet sleeve, namely the self-locking structure is additionally arranged in the ratchet wheel, the ratchet sleeve controls the self-locking coil spring to open or tightly hold the shaft sleeve through the control end of the self-locking coil spring to complete the separation or connection of the ratchet sleeve and the shaft sleeve, the ratchet sleeve and the shaft sleeve have certain degree of freedom, the self-locking structure has a certain time interval from loosening to locking or from locking to loosening, a certain buffering time is provided for the cutting-in or the separation of the pawl, and the collision strength of the ratchet wheel can be reduced, the reliability of the ratchet wheel and the pawl is enhanced, and the stability of function switching of the washing machine is improved.
Preferably, the outer wall of the shaft sleeve is provided with a convex ring and an annular groove at intervals, and a self-locking coil spring is arranged between the convex ring and the annular groove; an annular step is arranged at one end part of the ratchet sleeve, and a plurality of convex teeth protruding inwards are arranged at the other end part of the ratchet sleeve; the convex ring part of the shaft sleeve is embedded into the annular step of the ratchet sleeve, and the convex teeth of the ratchet sleeve are inserted into the annular groove of the shaft sleeve. Simple structure, and convenient assembling, the pressure equipment can be accomplished.
Preferably, the self-locking coil spring is formed by connecting a reed of the outer ring and a wiping sheet of the inner lining, and the control end is one end of the reed protruding outwards. The reed of the outer ring has high rigidity and good connectivity, and the friction force of the wiping sheet of the lining is high, so that a good self-locking effect can be achieved.
The invention also provides a processing device of the self-locking ratchet wheel of the clutch, which can fill oil into an oil storage groove in a shaft sleeve when the shaft sleeve and the ratchet sleeve are pressed and installed.
The technical scheme adopted by the processing device for solving the technical problems is as follows: a processing device of a clutch self-locking ratchet comprises a working platform, an oiling tool, a support, a lower pressing head and a lower pressing cylinder, wherein the support is fixed on the working platform, the lower pressing cylinder is installed on the support, the lower pressing head is fixed at the bottom end of a push rod of the lower pressing cylinder, the lower pressing head is arranged above an oil injection column of the oiling tool, and a positioning ring for supporting a ratchet sleeve is arranged on the periphery of the oil injection column; the pressing cylinder is electrically connected with the controller.
Compared with the prior art, the processing device has the advantages that the positioning ring for supporting the ratchet sleeve is additionally arranged on the periphery of the oil injection column, the support, the lower pressing head and the lower pressing cylinder are arranged on the working platform, the lower pressing head at the bottom end of the push rod of the lower pressing cylinder is arranged above the oil injection column of the oil coating tool, and therefore the oil storage tank in the shaft sleeve can be filled with oil when the shaft sleeve, the self-locking coil spring and the ratchet sleeve are pressed together.
Preferably, one end of the shaft sleeve is provided with a notch for moving the end part of the clutch holding spring, a convex block is arranged beside the oil injection column body, and the convex block is matched with the notch and is attached to the notch during oil injection so as to seal the notch. The first function is to facilitate the positioning and placement of the clutch self-locking ratchet wheel, and the second function is to block the gap during oil injection, so that the phenomenon that the lubricating oil is accumulated to pollute the appearance of the clutch self-locking ratchet wheel is avoided.
Preferably, the upper end surface of the oil injection column is flush with the end surface of the shaft sleeve after press mounting is finished. The pressure-bearing limiting function is realized, after the lower pressure head reaches the position for press-mounting the self-locking ratchet wheel of the clutch, the pressure of the lower pressure head is received by the oil injection column, the lower pressure head can be prevented from being pressed continuously, and the self-locking ratchet wheel of the clutch is protected from pressure loss under the condition that the force of the lower pressure cylinder is large.
Drawings
FIG. 1 is a perspective view of the clutch after the self-locking ratchet and the holding spring are assembled.
FIG. 2 is an exploded view of the self-locking ratchet and the locking spring of the clutch of the present invention.
Fig. 3 is a perspective view of the shaft sleeve of the clutch self-locking ratchet wheel of the invention.
Fig. 4 is a perspective view of a self-locking coil spring of the clutch self-locking ratchet according to the present invention.
FIG. 5 is a perspective view of the ratchet sleeve of the self-locking ratchet of the clutch of the present invention.
Fig. 6 is a perspective view of the processing device equipped with the clutch self-locking ratchet of the present invention.
Fig. 7 is a perspective view of the processing device of the self-locking ratchet wheel without the clutch.
Fig. 8 is a schematic perspective view of an oil filling column of the clutch self-locking ratchet machining device of the invention.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
In the embodiment, as shown in fig. 1 and 2, a clutch self-locking ratchet comprises a shaft sleeve 11, a self-locking coil spring 12 and a ratchet sleeve 13, wherein a plurality of convex ribs 11-1 are arranged on the inner wall of the shaft sleeve 11, an oil storage tank 11-2 is arranged between the convex ribs 11-1, and a ratchet 13-1 is arranged on the outer wall of the ratchet sleeve 13; the self-locking coil spring 12 is in clearance fit with the outer wall of the shaft sleeve 11, the ratchet sleeve 13 is sleeved outside the shaft sleeve 11 and the self-locking coil spring 12, the ratchet sleeve 13 and the shaft sleeve 11 are axially limited, the control end 12-1-1 of the self-locking coil spring 12 is embedded into the ratchet groove 13-2 in the inner wall of the ratchet sleeve 13, and the locking direction of the self-locking coil spring 12 is consistent with the reverse rotation direction of the ratchet 13-1.
In the embodiment, the shaft sleeve 11 is shown in fig. 3, and a convex ring 11-3 and a circular groove 11-4 are arranged on the outer wall of the shaft sleeve at intervals; the self-locking coil spring 12 is a single-coil spring as shown in fig. 4 and is formed by connecting a reed 12-1 of an outer ring and a wiping piece 12-2 of an inner lining, the wiping piece 12-2 is also called a friction plate, a control end 12-1-1 is one end of the reed 12-1 protruding outwards, the self-locking coil spring 12 is arranged between a convex ring 11-3 and an annular groove 11-4, the arrangement direction of the self-locking coil spring 12 is consistent with the rotation direction of a ratchet 13-1, and the locking direction of the self-locking coil spring 12 is consistent with the reverse rotation direction of the ratchet 13-1; as shown in fig. 5, the ratchet sleeve 13 is provided with an annular step 13-3 at one end part and a plurality of convex teeth 13-4 protruding inwards at the other end part; part of the convex ring 11-3 of the shaft sleeve 11 is embedded into the annular step 13-3 of the ratchet sleeve 13, and the convex teeth 13-4 of the ratchet sleeve 13 are inserted into the annular groove 11-4 of the shaft sleeve, so that the ratchet sleeve 13 is axially limited.
Preferably, in order to facilitate the press-fitting, the convex tooth 13-4 is inserted into the annular groove 11-4, the back side of the outer annular wall of the annular groove 11-4 is provided with a chamfer, the inner side of the inner end of the convex tooth 13-4 is also provided with a chamfer, and the chamfer and the convex tooth are matched with each other to form an outward expansion force on the convex tooth 13-4 so as to smoothly expand the convex tooth 13-4.
In this embodiment, a limiting ring 11-5 is further disposed between the convex ring 11-3 and the annular groove 11-4, a limiting groove 11-6 is disposed between the limiting ring 11-5 and the convex ring 11-3, and the self-locking coil spring 12 is disposed in the limiting groove 11-6. Wherein, the reed 12-1 is cut out by a single-circle steel ring with larger rigidity, and the initial end in the laying direction is curled and tilted to be used as a control end 12-1-1; of course, the self-locking coil spring 12 can also be a steel ring with larger inner wall friction force.
The oil injection and press fitting equipment for the clutch self-locking ratchet wheel comprises a processing device, an oil storage barrel, an oil pusher, a flowmeter and a controller, wherein the processing device, the oil pusher and the flowmeter are respectively and electrically connected with the controller. The processing device of the clutch self-locking ratchet wheel is shown in figures 6 and 7 and comprises a working platform 21, an oiling tool 22, a support 23, a lower pressing head 24 and a lower pressing cylinder 25; the oiling tool 22 comprises an oiling base 22-1 and an oiling joint (not shown in the figure), the oil injection column 22-2 and the positioning circular ring 22-3 are arranged, the oil injection base 22-1 is arranged on the working platform 21, the oil injection joint penetrates through the working platform 21 to be connected with an oil injection shaft hole of the oil injection base 22-1, the oil injection column 22-2 is composed of a column body 22-2-1 and a chassis 22-2-2, the chassis 22-2-2 of the oil injection column 22-2 is fixed with the oil injection base 22-1, the oil injection shaft hole in the column body 22-2-1 is communicated with the oil injection shaft hole of the oil injection base 22-1, two circles of oil injection holes 22-2-3 are arranged on the column body 22-2-1, and the positioning circular ring 22-3 is arranged on the chassis of the oil injection column 22-2 to form an assembling seat of the clutch self-locking ratchet wheel; the bracket 23 is fixed on the working platform 21, the downward-pressing cylinder 25 is installed on the bracket 23, the downward-pressing head 24 is fixed at the bottom end of a push rod of the downward-pressing cylinder 25, the downward-pressing head 24 is arranged above an oil injection column 22-2 of the oiling tool 22, and a positioning ring 22-3 for assembling the ratchet sleeve 13 is arranged on the periphery of the oil injection column 22-2; the down-pressure cylinder 25 is electrically connected to the controller.
In addition, one end of the shaft sleeve 11, which is close to the convex ring 11-3, is provided with a notch 11-7 for clamping the end part of the clutch holding spring 2, one end of the shaft sleeve 11, which is close to the annular groove 11-4, is provided with a notch 11-8 for moving the other end part of the clutch holding spring 2, a convex block 22-2-4 is arranged beside a cylinder 22-2-1 of the oil injection column 22-2, and the convex block 22-2-4 is matched with the notch 11-8 and is attached to the notch 11-8 to seal the notch 11-8 during oil injection. The upper end surface of the oil injection column 22-2 is flush with the end surface of the shaft sleeve 11 after the press mounting is finished.
When the clutch self-locking ratchet wheel is injected and pressed, firstly, a ratchet sleeve 13 is placed on a positioning circular ring 22-3, a convex tooth 13-4 of the ratchet sleeve 13 is placed in the positioning circular ring 22-3 in an oriented mode, then a control end 12-1-1 of a self-locking coil spring 12 is aligned to a clamp spring groove 13-2 of the ratchet sleeve 13, a shaft sleeve 11 and the self-locking coil spring 12 which are assembled together are installed on the ratchet sleeve 13, and then the shaft sleeve 11 is rotated to enable a notch 11-8 of the shaft sleeve 11 to be wedged with a convex block 22-2-4 beside a cylinder 22-2-1 of an oil injection column 22-2; then a control switch is started, a controller controls a downward pressing cylinder 25 to drive a downward pressing head 24 to move downward, the rapid press fitting is completed under the condition that the chamfer on the back side of the outer ring wall of the annular groove 11-4 is matched with the chamfer on the inner side of the inner end of the convex tooth 13-4, the end part of the notch 11-8 of the shaft sleeve 11 is sealed and blocked by the upper end surface of the convex block 22-2-4, the upper end surface of the oil injection column 22-2 is flush with the end surface of the shaft sleeve 11 after the press fitting is completed, and the oil pusher pushes lubricating oil in the oil storage barrel out quantitatively under the control of the flow meter and the controller and injects the oil into the oil storage groove 11-2 of the shaft sleeve 11 through the oil injection hole 22-2-3 on the cylinder 22-2-1 of the oil injection column 22-2.
Claims (6)
1. A clutch self-locking ratchet wheel is characterized by comprising a shaft sleeve (11), a self-locking coil spring (12) and a ratchet sleeve (13), wherein a plurality of convex ribs (11-1) are arranged on the inner wall of the shaft sleeve (11), an oil storage tank (11-2) is arranged between the convex ribs (11-1), and a ratchet (13-1) is arranged on the outer wall of the ratchet sleeve (13); the self-locking coil spring (12) is in clearance fit with the outer wall of the shaft sleeve (11), the ratchet sleeve (13) is sleeved outside the shaft sleeve (11) and the self-locking coil spring (12), the ratchet sleeve (13) is axially limited with the shaft sleeve (11), the control end (12-1-1) of the self-locking coil spring (12) is embedded into the ratchet groove (13-2) in the inner wall of the ratchet sleeve (13), and the locking direction of the self-locking coil spring (12) is consistent with the reverse direction of the ratchet (13-1).
2. The clutch self-locking ratchet of claim 1, wherein: the outer wall of the shaft sleeve (11) is provided with a convex ring (11-3) and an annular groove (11-4) at intervals, and a self-locking coil spring (12) is arranged between the convex ring (11-3) and the annular groove (11-4); an annular step (13-3) is arranged at one end part of the ratchet sleeve (13), and a plurality of convex teeth (13-4) protruding inwards are arranged at the other end part of the ratchet sleeve (13); the convex ring (11-3) of the shaft sleeve (11) is partially embedded into the annular step (13-3) of the ratchet sleeve (13), and the convex teeth (13-4) of the ratchet sleeve (13) are inserted into the annular groove (11-4) of the shaft sleeve.
3. The clutch self-locking ratchet of claim 1, wherein: the self-locking coil spring (12) is formed by connecting a reed (12-1) of an outer ring and a wiping sheet (12-2) of an inner lining, and the control end (12-1-1) is the end of the reed (12-1) protruding outwards.
4. A processing device of a clutch self-locking ratchet wheel according to any one of claims 1 to 3, comprising a working platform (21) and an oiling tool (22), and characterized in that: the oil injection device is characterized by further comprising a support (23), a lower pressing head (24) and a lower pressing cylinder (25), wherein the support (23) is fixed on the working platform (21), the lower pressing cylinder (25) is installed on the support (23), the lower pressing head (24) is fixed at the bottom end of a push rod of the lower pressing cylinder (25), the lower pressing head (24) is arranged above an oil injection column (22-2) of the oil injection tool (22), and a positioning circular ring (22-3) for assembling the ratchet sleeve (13) is arranged on the periphery of the oil injection column (22-2).
5. The processing device of the clutch self-locking ratchet wheel according to claim 4, wherein: one end of the shaft sleeve (11) is provided with a notch (11-8) for moving the end part of the embracing spring (2) of the clutch, a convex block (22-2-4) is arranged beside the cylinder body (22-2-1) of the oil injection column (22-2), and the convex block (22-2-4) is matched with the notch (11-8) and is attached to the notch (11-8) to seal the notch (11-8) during oil injection.
6. The processing device of the clutch self-locking ratchet wheel according to claim 4, wherein: the upper end face of the oil injection column (22-2) is flush with the end face of the shaft sleeve (11) after press fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210121164.4A CN114483809B (en) | 2022-02-09 | 2022-02-09 | Self-locking ratchet wheel of clutch and processing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210121164.4A CN114483809B (en) | 2022-02-09 | 2022-02-09 | Self-locking ratchet wheel of clutch and processing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483809A true CN114483809A (en) | 2022-05-13 |
| CN114483809B CN114483809B (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210121164.4A Active CN114483809B (en) | 2022-02-09 | 2022-02-09 | Self-locking ratchet wheel of clutch and processing device thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114483809B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH581273A5 (en) * | 1974-06-04 | 1976-10-29 | Lacrex Brevetti Sa | Snap connection between hose ends - has inner and outer sleeves with O-ring seal and finger with ridge and groove |
| US4953369A (en) * | 1988-08-26 | 1990-09-04 | Kabushiki Kaisha Toshiba | Washing machine |
| JPH061851U (en) * | 1992-06-22 | 1994-01-14 | 三菱自動車工業株式会社 | Shaft connection mechanism |
| CN2155384Y (en) * | 1993-06-07 | 1994-02-09 | 赖吉洪 | Inner and outer shaft engaging and disengaging gear for fully-automatic washing machine |
| JPH0635668U (en) * | 1991-04-01 | 1994-05-13 | ノーリツ鋼機株式会社 | Mechanism for fastening the power transmission element to the shaft |
| CN209551050U (en) * | 2019-01-17 | 2019-10-29 | 力帆实业(集团)股份有限公司 | A kind of frame of motorcycle bearing press mounting and lubricating grease smear integrated equipment |
-
2022
- 2022-02-09 CN CN202210121164.4A patent/CN114483809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH581273A5 (en) * | 1974-06-04 | 1976-10-29 | Lacrex Brevetti Sa | Snap connection between hose ends - has inner and outer sleeves with O-ring seal and finger with ridge and groove |
| US4953369A (en) * | 1988-08-26 | 1990-09-04 | Kabushiki Kaisha Toshiba | Washing machine |
| JPH0635668U (en) * | 1991-04-01 | 1994-05-13 | ノーリツ鋼機株式会社 | Mechanism for fastening the power transmission element to the shaft |
| JPH061851U (en) * | 1992-06-22 | 1994-01-14 | 三菱自動車工業株式会社 | Shaft connection mechanism |
| CN2155384Y (en) * | 1993-06-07 | 1994-02-09 | 赖吉洪 | Inner and outer shaft engaging and disengaging gear for fully-automatic washing machine |
| CN209551050U (en) * | 2019-01-17 | 2019-10-29 | 力帆实业(集团)股份有限公司 | A kind of frame of motorcycle bearing press mounting and lubricating grease smear integrated equipment |
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| Publication number | Publication date |
|---|---|
| CN114483809B (en) | 2022-11-22 |
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