CN217713405U - Flywheel structure convenient to assemble - Google Patents
Flywheel structure convenient to assemble Download PDFInfo
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- CN217713405U CN217713405U CN202221785996.8U CN202221785996U CN217713405U CN 217713405 U CN217713405 U CN 217713405U CN 202221785996 U CN202221785996 U CN 202221785996U CN 217713405 U CN217713405 U CN 217713405U
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- inner core
- flywheel
- pawl
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Abstract
The utility model discloses a flywheel structure convenient to assembly belongs to the flywheel field. A flywheel structure convenient to assemble comprises an outer sleeve, an inner core and a ratchet mechanism; the outer sleeve is internally provided with an installation through hole, and the inner core is arranged in the installation through hole; the ratchet mechanism comprises at least one pawl and an elastic ring; one end of the pawl is rotatably connected with the outer surface of the inner core, so that the other end of the pawl can swing towards the direction close to or far away from the inner core; one side of the pawl along the direction that the inner core is inserted into the outer sleeve is detachably connected with a limiting ring, and the limiting ring and the outer surface of the inner core at the other side of the pawl are enclosed to form a limiting groove; the elastic ring is arranged in the limiting groove and is in fit connection with the upper surface of the pawl; the elastic ring has elasticity, so that the pawl has the capability of reciprocating swing; it can protect and seal one side of the flywheel; the elastic ring is directly sleeved in the limiting groove for installation through the disassembly and the installation of the limiting ring, the elastic ring is not required to be manually aligned with the limiting groove and then embedded, and the assembly efficiency is improved.
Description
Technical Field
The utility model belongs to the flywheel field, more specifically say, relate to a flywheel structure convenient to assembly.
Background
With the technical progress and economic development of society, bicycles are rapidly popularized as walking tools of people and are developing towards the direction of bringing comfort and convenience to riders. The flywheel of bicycle is divided into multi-stage flywheel and single-stage flywheel, the multi-stage flywheel is on the basis of single-stage flywheel, several flywheel pieces are added, combined with chain wheel on the centre shaft, to form various transmission ratios, thus changing the speed of bicycle. In the prior art, if a plurality of flywheel sheets need to be added or reduced in the flywheel of the same specification, the inner core needs to be fixed by replacing the wire gears of different specifications, so that the inner core can be prevented from being separated when the wheel shaft rotates, accidents are caused, the operation is complex and not convenient enough when the flywheel sheets are increased or reduced, the wire gears of different specifications need to be prepared, and the use cost of the bicycle is high.
In the prior art, an end cover for limiting a flywheel sheet is embedded in an outer sleeve, and water or sand is easy to enter when the flywheel is used, so that the use of the flywheel is influenced; in addition, common bicycle flywheel is the flywheel structure of pawl formula on the market, mainly there is the overcoat, parts such as core are constituteed, the pawl is cramped by the elastic ring, so that the overcoat rotates, when the core does not rotate, the pawl passes through the elastic ring and resets, but this kind of flywheel structure is when producing, the staff often need with the elastic ring after pulling open in the recess of manual work inlays on locating the inner core surface, because the recess is thinner, inlay the process of establishing more loaded down with trivial details, the speed that leads to the staff to assemble the elastic ring is slower, the assembly efficiency, labor cost is bigger.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a flywheel structure convenient for assembly, which can protect and seal one side of the opening of the flywheel, and prevent water and sand from entering the flywheel to affect the use; the limiting ring on one side of the pawl close to the end cover is detachably connected with the inner core, when the elastic ring needs to be assembled, the limiting ring is disassembled, the elastic ring is sleeved into the limiting groove directly and then limited, the operation steps are simple, the elastic ring is not required to be embedded into the limiting groove after being aligned with the limiting groove manually, the assembling speed of workers is increased, and the assembling efficiency is improved.
The utility model relates to a flywheel structure convenient for assembly, which comprises an outer sleeve, an inner core and a ratchet mechanism;
the outer sleeve is internally provided with an installation through hole, the size of the installation through hole is consistent with that of the inner core, and the inner core is arranged in the installation through hole;
the ratchet mechanism is arranged between the outer sleeve and the inner core and comprises at least one pawl and an elastic ring; one end of the pawl is rotatably connected with the outer surface of the inner core, so that the other end can swing towards the direction close to or far away from the outer surface of the inner core; one side of the pawl along the direction that the inner core is inserted into the outer sleeve is detachably connected with a limiting ring, the limiting ring is sleeved on the periphery of the inner core, and a limiting groove is formed by the limiting ring and the outer surface of the inner core on the other side of the pawl; the elastic ring is arranged in the limiting groove, sleeved on the periphery of the inner core and attached to the upper surface of the pawl; the elastic ring has elasticity, so that the pawl has the capability of reciprocating oscillation.
As a further improvement, the ratchet mechanism comprises a ratchet surface, the inner wall of the mounting through hole is arranged on the ratchet surface, the ratchet surface is the tooth surface on the inner wall of the mounting through hole, and the tooth surface is lower than the highest height of the upper surface of the pawl.
As a further improvement of the utility model, the surface of the pawl is provided with a groove, one end of the groove is arranged on the upper surface of one end of the pawl which is rotationally connected with the inner core, and the direction of the rotation of the inner core at the other end penetrates through one end of the pawl which swings; the elastic ring is connected in the groove in a sliding manner, and the elastic ring is attached to the bottom surface of the groove.
As a further improvement of the utility model, the device also comprises at least one flywheel sheet; the outer surface of the outer sleeve is in a step shape with the diameter gradually reduced along the axial direction, and at least one flywheel piece can be detached, gradually reduced and sequentially connected to the step-shaped surface of the outer sleeve.
As a further improvement, the end-to-end connection who locates for the installation flywheel piece on the installation through-hole has the end cover, and end cover one end threaded connection is in the installation through-hole, and the other end sets up in the outside of installation through-hole, and is connected with the end laminating of flywheel piece.
As the utility model discloses a further improvement, the top relative to installation flywheel piece department on the installation through-hole is connected with the silk shelves, silk shelves and installation through-hole threaded connection to fixed inner core.
As a further improvement of the utility model, ball sleeves are respectively arranged between the thread stop and the inner core, and between the inner core and the outer sleeve; a group of mounting grooves are arranged on the surface of the ball sleeve in an annular array manner; the joint formula embedding has the ball in the mounting groove, and the mounting groove diameter that the diameter of ball is greater than.
As a further improvement of the utility model, the inner ring array is equipped with two at least locating pin holes in the terminal surface of inner core one side is kept away from to the silk shelves to in the whole screw in overcoat of supplementary silk shelves.
As a further improvement of the utility model, a groove matched with the ball sleeve is arranged in the side end face of the wire baffle close to the inner core.
Compared with the prior art, the beneficial effects of the utility model reside in that: the limiting ring on one side of the pawl close to the end cover is detachably connected with the inner core, when the elastic ring needs to be assembled, the limiting ring is disassembled, the elastic ring is sleeved into the limiting groove directly and then limited, the operation steps are simple, the elastic ring is not required to be embedded into the limiting groove after being aligned with the limiting groove manually, the assembling speed of workers is increased, and the assembling efficiency is improved.
The end cover is abutted against the tail end of the flywheel sheet, so that one side of an opening of the flywheel is protected and sealed, water and sand dust are prevented from entering the flywheel, the flywheel is abraded or rusted, and the service life of the flywheel is influenced;
through changing the position that the silk shelves is in the overcoat, will be originally spacing connection at the terminal position of installation flywheel piece department, adjust to relative top position when installing the flywheel piece to this convenience is under same specification condition, adjusts the flywheel piece number on the overcoat, simultaneously, has avoided when flywheel piece number changes, still must change the size of silk shelves and just can guarantee the normal cooperation between core and the overcoat.
Drawings
Fig. 1 is a schematic sectional structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the inner core and the outer cover of the present invention;
fig. 3 is an isometric view of the inner core of the present invention;
fig. 4 is a perspective exploded view of the inner core of the present invention;
fig. 5 is a right-side view schematic structural view of the inner core and the outer cover of the present invention when they are connected;
fig. 6 is a schematic structural view of the ratchet mechanism of the present invention;
fig. 7 is a schematic sectional view of the outer cover of the present invention;
fig. 8 is a schematic cross-sectional view of the core according to the present invention;
fig. 9 is a right-side view structural schematic diagram of the inner core of the present invention;
fig. 10 is a schematic structural view of the thread stop of the present invention;
fig. 11 is a right side view structural schematic diagram of the thread stop of the present invention;
fig. 12 is an isometric view of the ball sleeve of the present invention.
The reference numbers in the figures illustrate:
the device comprises an outer sleeve 1, an inner core 2, a thread stop 3, a flywheel sheet 4, a ball sleeve 5, a mounting groove 51, a ball 52, a pawl 61, a ratchet surface 62, an elastic ring 63, a limiting ring 64 and an end cover 7.
Detailed Description
The first embodiment is as follows: referring to fig. 1-12, a flywheel structure for easy assembly includes an outer sleeve 1, a core 2, at least one flywheel plate 4, a pair of ball sleeves 5 and a ratchet mechanism.
The outer surface of the outer sleeve 1 is in a step shape with the diameter gradually reduced along the axial direction and is used for installing flywheel pieces 4 with different diameters.
At least one flywheel plate 4 is detachably attached to the stepped surface of the outer sleeve 1 step by step and in turn.
The outer sleeve 1 is internally provided with a mounting through hole, and the size of the mounting through hole is consistent with that of the inner core 2 so as to be embedded into the inner core 2; an end cover 7 is in threaded connection with the tail end of the mounting through hole, which is opposite to the flywheel sheet 4, the end cover 7 can limit the axial movement of the flywheel sheet 4 after being screwed tightly, one end of the end cover 7, which is far away from the inner core 2, is arranged on the outer side of the mounting through hole and is in fit connection with the tail end of the flywheel sheet 4 so as to prevent water or sand from entering the flywheel;
the mounting through hole is in threaded connection with a thread stop 3 at the starting end corresponding to the flywheel mounting plate 4, and the thread stop 3 can limit the inner core 2 to be separated from the outer sleeve 1 in the rotating process after being screwed; a groove is arranged in the end face of the screw stop 3 close to one side of the end cover 7 and can be matched and connected with the ball sleeve 5, please refer to fig. 10-11, an annular array is arranged in the end face of the screw stop 3 far away from one side of the end cover 7 and is provided with at least two positioning pin holes, and the screw stop 3 can be conveniently and completely screwed into the outer sleeve 1 through the positioning pin holes;
the inner core 2 is embedded in the mounting through hole, and the inner core 2 is matched with the outer sleeve 1; the outer surface of the inner core 2 is provided with at least one connecting clamping groove which is used for being matched and connected with the ratchet mechanism; one side of the connecting clamping groove, which is far away from the end cover 7, is connected with the outer surface of the inner core 2, one side of the connecting clamping groove, which is close to the end cover 7, is detachably connected with a limiting ring 64, the limiting ring 64 is sleeved on the periphery of the inner core 2, the surface of one side of the limiting ring 64, which is close to the connecting clamping groove, and the outer surface of the inner core 2, which is close to the connecting clamping groove, are enclosed into a circle of limiting groove, the limiting groove is in a circular ring shape, and the limiting groove penetrates through the connecting clamping groove;
the ratchet mechanism is arranged between the outer sleeve 1 and the inner core 2, and the outer sleeve 1 and the inner core 2 are controlled by the ratchet mechanism to rotate simultaneously when forming a unique clockwise direction; the ratchet mechanism comprises at least one pawl 61, a ratchet surface 62 and an elastic ring 63; the number of the pawls 61 is the same as that of the connecting slots; one end of at least one pawl is rotatably connected with the connecting clamping groove, so that the other end of the pawl 61 can swing towards or away from the outer surface of the inner core 2; a groove is formed in the surface of the pawl 61, one end of the groove is formed in the upper surface of one end, rotatably connected with the inner core 2, of the pawl 61, the other end of the groove penetrates through one swinging end of the pawl 61 along the rotating direction of the inner core 2, and the groove is slidably connected with the elastic ring 63 so that the swinging of the pawl 61 affects the deformation of the elastic ring 63;
the elastic ring 63 is sleeved on the periphery of the inner core 2 and is movably connected in the limiting groove; because the limiting groove penetrates through the connecting clamping groove, the elastic ring 63 penetrates through the pawl 61 through the groove of the pawl 61, and the elastic ring 63 is connected with the bottom surface of the groove in an attaching manner, so that the swinging of the pawl 61 influences the vertical rotation of one end, rotatably connected with the inner core 2, of the pawl 61, and the deformation of the elastic ring 63 is influenced; the elastic ring 63 has elasticity, and in a free state, the inner diameter of the elastic ring 63 is equal to the outer diameter of the limiting groove; when one end of the pawl 61 rotates towards the direction close to the inner core 2, the pawl 61 stretches the elastic ring 63, the stretched elastic ring 63 generates elastic resetting force, and the elastic resetting force acts on the pawl 61 to control one end of the pawl 61 to rotate towards the direction away from the inner core 2 and reset; when the flywheel works, the pawl 61 swings relatively within the limit of the elasticity of the elastic ring 63
The ratchet surface 62 is arranged on the inner wall of the mounting through hole of the outer sleeve 1, the ratchet surface 62 is a tooth surface on the inner wall of the mounting through hole, the tooth surface is in fit connection with the upper surface of the pawl 61, and the height of the tooth surface is lower than the highest height of the upper surface of the pawl 61; when the outer sleeve 1 drives the ratchet surface 62 to rotate towards the direction in which the teeth on the ratchet surface 62 protrude, the teeth on the ratchet surface 62 are abutted against the pawl 61, so that the outer sleeve 1 and the inner core 2 rotate in the same direction; when the outer sleeve 1 rotates the ratchet surface 62 in a direction opposite to the direction in which the teeth on the ratchet surface 62 protrude. The inner wall of the ratchet surface 62 forces the pawls 61 to swing toward and away from the coupling grooves, and the outer sleeve 1 rotates while the inner core 2 does not rotate.
The pair of ball sleeves 5 are respectively arranged between the thread stop 3 and the inner core 2, and between the inner core 2 and the outer sleeve 1, and a group of mounting grooves 51 are arranged on the surface of each ball sleeve 5 in an annular array manner; the ball 52 is inserted into the mounting groove 51 in a snap-fit manner. The diameter of the mounting groove 51 is smaller than that of the ball 52, and the ball housing 5 provides an urging force for the inner core 2 when rotating, to reduce friction.
The working principle is as follows: when the flywheel is assembled, the elastic ring 63 is directly sleeved into the limiting groove on the outer surface of the inner core 2 from one end of the inner core 2, and then the limiting ring 64 is sleeved on the periphery of the inner core 2 to limit the movement of the elastic ring 63. After the core 2 is assembled, the core 2 is installed into the outer jacket 1 along the installation through hole, one of the ball sleeves 5 is placed at a position where the inner wall of the outer jacket 1 abuts against the outer wall of the core 2 (as shown in the position of one of the ball sleeves 5 in fig. 2), then the other ball sleeve 5 is placed outside the core 2 (as shown in the position of the other ball sleeve 5 in fig. 2), and the thread stop 3 is screwed into the end portion of the outer jacket 1 at the end with the largest diameter side so that the groove on the thread stop 3 abuts against the other ball sleeve 5. In order to ensure that the wire retainer 3 can be completely embedded, the wire retainer 3 can be rotated and screwed by embedding a tool into the positioning pin hole, so that the inner core 2 is prevented from falling off;
then, the corresponding number of the flywheel pieces 4 is selected according to the requirement, the flywheel pieces are installed on the stepped surface of the outer sleeve 1 step by step, the end cover 7 is screwed into the end part at the minimum diameter side of the outer sleeve 1, the end cover 7 is abutted to the flywheel piece 4 at the tail end, the flywheel pieces 4 are fixed on the outer sleeve 1, one end of the flywheel is closed by the end cover 7, water or sand dust on a road surface can be prevented from entering the flywheel when the bicycle advances, and therefore the advancing and the service life of the bicycle are influenced.
When the flywheel works, the flywheel sheet 4 drives the outer sleeve 1 to rotate, and under the matching action among the pawl 61, the ratchet surface 62 and the elastic ring 63, the outer sleeve 1 and the inner core 2 rotate simultaneously in the only clockwise direction, so that the inner core 2 drives the wheel shafts to rotate together, and the bicycle advances.
Claims (9)
1. A flywheel structure convenient to assemble, its characterized in that: comprises an outer sleeve (1), an inner core (2) and a ratchet mechanism;
an installation through hole is formed in the outer sleeve (1), the size of the installation through hole is consistent with that of the inner core (2), and the inner core (2) is arranged in the installation through hole;
the ratchet mechanism is arranged between the outer sleeve (1) and the inner core (2) and comprises at least one pawl (61) and an elastic ring (63); one end of the pawl (61) is rotatably connected with the outer surface of the inner core (2) so that the other end can swing towards the direction close to or far away from the outer surface of the inner core (2); one side of the pawl (61) along the direction that the inner core (2) is inserted into the outer sleeve (1) is detachably connected with a limiting ring (64), the limiting ring (64) is sleeved on the periphery of the inner core (2), and a limiting groove is formed by the limiting ring (64) and the outer surface of the inner core (2) on the other side of the pawl (61); the elastic ring (63) is arranged in the limiting groove, sleeved on the periphery of the inner core (2) and connected with the upper surface of the pawl (61) in a fitting manner; the elastic ring (63) has elasticity so that the pawl (61) has the capability of reciprocating oscillation.
2. A flywheel construction to facilitate assembly according to claim 1, wherein: the ratchet mechanism comprises a ratchet surface (62), the ratchet surface (62) is arranged on the inner wall of the mounting through hole, the ratchet surface (62) is a tooth surface on the inner wall of the mounting through hole, and the height of the tooth surface is lower than the highest height of the upper surface of the pawl (61).
3. A flywheel construction to facilitate assembly according to claim 1, wherein: a groove is formed in the surface of the pawl (61), one end of the groove is formed in the upper surface of one end, rotatably connected with the inner core (2), of the pawl (61), and the rotating direction of the inner core (2) at the other end penetrates through one end, swinging along the pawl (61); the elastic ring (63) is connected in the groove in a sliding mode, and the elastic ring (63) is attached to the bottom face of the groove.
4. A flywheel construction to facilitate assembly according to claim 1, wherein: the flywheel plate also comprises at least one flywheel plate; the outer surface of the outer sleeve (1) is in a step shape with the diameter gradually reduced along the axial direction, and at least one flywheel sheet (4) can be detached and sequentially connected to the step-shaped surface of the outer sleeve (1) step by step.
5. A flywheel construction easy to assemble according to claim 4 wherein: the tail end of the installation flywheel sheet (4) on the installation through hole is connected with an end cover (7), one end of the end cover (7) is in threaded connection with the installation through hole, and the other end of the end cover is arranged on the outer side of the installation through hole and is attached to the tail end of the flywheel sheet (4).
6. A flywheel construction to facilitate assembly according to claim 4, wherein: the starting end of the installation flywheel sheet (4) on the installation through hole is connected with a thread stop (3), and the thread stop (3) is in threaded connection with the installation through hole so as to fix the inner core (2).
7. A flywheel construction to facilitate assembly according to claim 6, wherein: ball sleeves (5) are respectively arranged between the thread stop (3) and the inner core (2) and between the inner core (2) and the outer sleeve (1); a group of mounting grooves (51) are arranged on the surface of the ball sleeve (5) in an annular array; the ball (52) is embedded in the mounting groove (51) in a clamping manner, and the diameter of the ball (52) is larger than that of the mounting groove (51).
8. A flywheel construction to facilitate assembly according to claim 1, wherein: at least two positioning pin holes are arranged in an annular array in the end face of one side, far away from the inner core (2), of the wire stopper (3) so as to assist the wire stopper (3) to be completely screwed into the outer sleeve (1).
9. A flywheel construction to facilitate assembly according to claim 1, wherein: a groove which can be matched with the ball sleeve (5) is arranged in the end surface of one side of the screw stopper (3) close to the inner core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221785996.8U CN217713405U (en) | 2022-07-12 | 2022-07-12 | Flywheel structure convenient to assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221785996.8U CN217713405U (en) | 2022-07-12 | 2022-07-12 | Flywheel structure convenient to assemble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217713405U true CN217713405U (en) | 2022-11-01 |
Family
ID=83778702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221785996.8U Active CN217713405U (en) | 2022-07-12 | 2022-07-12 | Flywheel structure convenient to assemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217713405U (en) |
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2022
- 2022-07-12 CN CN202221785996.8U patent/CN217713405U/en active Active
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