TWM657222U - Bearing structure capable of one-way rotation and idling - Google Patents

Abstract

The invention relates to a bearing structure capable of unidirectional rotation and freewheeling, the bearing structure comprising a bearing body and a one-way ratchet module, the bearing body comprising an inner ring body and an outer ring body rotatably sleeved outside the inner ring body; the one-way ratchet module comprising a first ratchet ring, a second ratchet ring and a plurality of elastic elements, the first ratchet ring extending from one end of the inner ring body and the outer ring body along its circumference. The first ratchet ring has a plurality of first one-way ratchets; the second ratchet ring can be movably sleeved on the other of the inner ring body and the outer ring body, and the second ratchet ring has a plurality of second one-way ratchets; a plurality of elastic elements are elastically supported between the other of the inner ring body and the outer ring body and the second ratchet ring, and the plurality of elastic elements are used to push the plurality of second one-way ratchets against the plurality of first one-way ratchets.

Description

Bearing structure capable of one-way rotation and free-running

This invention relates to a bearing structure, and in particular to a bearing structure capable of unidirectional rotation and idling.

A bicycle, also known as a bike, bicycle, bike, scooter, free bike, etc., is a small two-wheeled vehicle that is propelled by human power by pushing pedals. The pedals can only move in one direction, and will spin when the pedals rotate in the opposite direction, thereby preventing the reverse rotation of the pedals from causing wear and damage to internal components.

However, if the pedal reverse idling structure is too complicated and the manufacturing method is cumbersome, the manufacturing cost will be high. Therefore, how to simplify the pedal reverse idling structure and manufacturing method and reduce the manufacturing cost at the same time is the focus of joint research and development by bicycle manufacturers.

In view of this, the author has devoted himself to the research and application of the above existing technologies, trying his best to solve the above problems, which has become the goal of the author's improvement.

The invention provides a bearing structure capable of unidirectional rotation and freewheeling, which utilizes a plurality of elastic elements to push a plurality of second unidirectional ratchets against a plurality of first unidirectional ratchets, so as to achieve the advantages of a simple structure, simplified manufacturing method and reduced manufacturing cost.

In the embodiment of the invention, the invention provides a bearing structure capable of unidirectional rotation and freewheeling, comprising: a bearing body, including an inner ring body and an outer ring body rotatably sleeved on the outer side of the inner ring body; and a one-way ratchet module, including a first ratchet ring, extending from one end of one of the inner ring body and the outer ring body along the circumference thereof, the first ratchet ring having a plurality of A first one-way ratchet; a second ratchet ring movably sleeved on the other of the inner ring body and the outer ring body, the second ratchet ring having a plurality of second one-way ratches; and a plurality of elastic elements elastically supported between the other of the inner ring body and the outer ring body and the second ratchet ring, the plurality of elastic elements being used to push the plurality of second one-way ratches against the plurality of first one-way ratches.

Based on the above, this invention can achieve the unidirectional rotation and idling functions of the bearing structure through a simple structure, and the inner ring, outer ring, first ratchet ring and second ratchet ring can be manufactured by 3D printing technology, and the elastic force of multiple elastic elements can be used to adjust the abutment tightness of the first ratchet ring and the second ratchet ring, so that the bearing structure can be customized according to customer application requirements, thereby improving the flexibility of the product and reducing production costs.

The detailed description and technical content of this creation will be explained below with the help of diagrams. However, the attached diagrams are for illustrative purposes only and are not used to limit this creation.

Please refer to Figures 1 to 10, the invention provides a bearing structure capable of unidirectional rotation and idling, and the bearing structure 10 mainly includes a bearing body 1 and a one-way ratchet module 2. As shown in Figures 1 to 2 and 10, the bearing structure 10 is used to be inserted between the pedal shaft 100 and the actuating gear 200, and the motor 300 and the actuating gear 200 are engaged through the gear structure.

As shown in FIGS. 2 to 10 , the bearing body 1 includes an inner ring 11 and an outer ring 12 rotatably mounted on the outer portion of the inner ring 11 . The inner ring 11 and the outer ring 12 can be manufactured by 3D printing technology, but the invention is not limited thereto.

As shown in FIGS. 2 to 10 , the one-way ratchet module 2 includes a first ratchet ring 21, a second ratchet ring 22 and a plurality of elastic elements 23. The first ratchet ring 21 and the second ratchet ring 22 can be manufactured by 3D printing technology, but the invention is not limited thereto.

In addition, the first ratchet ring 21 is formed by extending from one end of one of the inner ring body 11 and the outer ring body 12 along its circumferential direction, and has a plurality of first one-way ratchets 211, each of which has a first inclined chamfer 212 with a thickness gradually increasing along a first direction on one side and a first step portion 213 on the other side.

Furthermore, the second ratchet ring 22 can be movably sleeved on the other of the inner ring body 11 and the outer ring body 12. The second ratchet ring 22 has a plurality of second one-way ratchets 221. Each second one-way ratchet 221 has a second inclined chamfer 222 with a thickness gradually increasing along a second direction on one side and a second step portion 223 on the other side. The first direction is opposite to the second direction. The second ratchet ring 22 is provided with a plurality of second recessed holes 224.

To further explain as follows, when the first step portions 213 and the second step portions 223 abut against each other, they will be locked, so that the first ratchet ring 21 and the second ratchet ring 22 rotate together, and when the first inclined chamfers 212 and the second inclined chamfers 222 abut against each other, they will slide against each other, so that the first ratchet ring 21 and the second ratchet ring 22 rotate relative to each other.

In addition, the other of the inner annular body 11 and the outer annular body 12 is provided with a plurality of first concave holes 13, an annular groove 14, and a plurality of through-holes 15 and a plurality of straight grooves 16 arranged on both sides of the annular groove 14 and connected to the annular groove 14. The plurality of through-holes 15 and the plurality of straight grooves 16 are staggered, and the plurality of straight grooves 16 and the plurality of first concave holes 13 are arranged opposite to each other. The intersection of each straight groove 16 and the annular groove 14 has an expansion section 161 whose opening size gradually expands toward the annular groove 14.

Furthermore, the other of the inner ring body 11 and the outer ring body 12 has a plurality of first ramp blocks 151 extending from the inner wall of the plurality of through-holes 15, and the second ratchet ring 22 has a plurality of second ramp blocks 225 extending from the second ratchet ring 22 and arranged opposite to the plurality of second recessed holes 224. Each second ramp block 225 can pass through each through-hole 15 and the annular groove 14 and can be movably accommodated in each vertical groove 16. It can be stopped and limited by each first slope block 151, wherein when the first ratchet ring 21 and the second ratchet ring 22 abut against each other, the first ratchet ring 21 will push the second ratchet ring 22, so that each second slope block 225 of the second ratchet ring 22 slides into each vertical groove 16 and is limited in each vertical groove 16, and each expansion section 161 is used to guide each second slope block 225 to slide smoothly into each vertical groove 16.

Furthermore, each elastic element 23 is a coil spring, and both ends of each elastic element 23 are respectively embedded in each first recessed hole 13 and each second recessed hole 224 and embedded in each vertical groove 16, so that the multiple elastic elements 23 are elastically supported between the inner ring body 11 and the other of the outer ring body 12 and the second ratchet ring 22, and the multiple elastic elements 23 are used to push the multiple second one-way ratchets 221 and the multiple first one-way ratchets 211 against each other.

The details are as follows. The first ratchet ring 21 of the present embodiment is formed by extending from one end of the outer ring body 12 along its circumference, and the second ratchet ring 22 can be movably sleeved on the inner ring body 11. The outer peripheral wall of the inner ring body 11 protrudes along its circumference to form an annular block 111. A plurality of first recessed holes 13 are opened from the annular block 111, and an annular groove 14, a plurality of through openings 15 and a plurality of straight grooves 16 are opened from the outer peripheral wall of the inner ring body 11.

However, this embodiment is not limiting. The first ratchet ring 21 may also be formed by extending from one end of the inner ring body 11 along its circumference, and the second ratchet ring 22 may also be movably connected to the outer ring body 12. The inner circumferential wall of the outer ring body 12 may have an annular block protruding along its circumference, and a plurality of first recessed holes 13 are opened from the annular block. The annular groove 14, a plurality of through-holes 15 and a plurality of straight grooves 16 may also be opened from the inner circumferential wall of the outer ring body 12.

As shown in FIGS. 1 to 10 , the use state of the bearing structure 10 of the present invention is that the pedal shaft 100 is connected to the inner ring body 11 and rotates along with the inner ring body 11, the actuating gear 200 is sleeved on the outer ring body 12 and rotates along with the outer ring body 12, and the inner ring body 11 and the outer ring body 12 of the bearing body 1 then rotate unidirectionally or idle according to the rotation direction of the first ratchet ring 21 and the second ratchet ring 22.

As further described below, as shown in FIG. 5 and FIG. 6, the first ratchet ring 21 and the second ratchet ring 22 are in a unidirectional rotation state. When the pedal shaft 100 drives the inner ring body 11 to rotate in a direction where each first step difference portion 213 and each second step difference portion 223 abut against each other, the plurality of elastic elements 23 will push the plurality of second unidirectional ratchets 221 and the plurality of first unidirectional ratchets 223. 11 abuts against each other, so that each first step difference portion 213 and each second step difference portion 223 are surely engaged with each other, so that the first ratchet ring 21 and the second ratchet ring 22 rotate together. At the same time, because each second slope block 225 is accommodated in each vertical groove 16, the outer ring body 12 and the first ratchet ring 21 rotate together through the traction of the second slope block 225 and the vertical groove 16.

In addition, as shown in Figures 7 to 9, the first ratchet ring 21 and the second ratchet ring 22 are in an idling state. When the pedal shaft 100 drives the inner ring body 11 to rotate in the direction in which each first inclined chamfer 212 and each second inclined chamfer 222 abut against each other, the plurality of elastic elements 23 will push the plurality of second one-way ratchets 221 and the plurality of first one-way ratchets 211 to abut against each other, so that each first inclined chamfer 212 and each second inclined chamfer 222 can slide against each other accurately, causing the first ratchet ring 21 and the second ratchet ring 22 to be unable to engage with each other and rotate, so that the first ratchet ring 21 and the second ratchet ring 22 are idling against each other.

Thus, the invention can achieve the unidirectional rotation and idling functions of the bearing structure 10 through a simple structure, and the inner ring 11, the outer ring 12, the first ratchet ring 21 and the second ratchet ring 22 can be manufactured by 3D printing technology, and the elastic force of the multiple elastic elements 23 can be used to adjust the abutment tightness of the first ratchet ring 21 and the second ratchet ring 22, so that the bearing structure 10 can be customized according to the customer's application requirements, thereby improving the flexibility of the product and reducing the production cost.

In summary, the bearing structure of this invention that can rotate in one direction and freewheel can achieve the expected purpose of use and solve the lack of knowledge. It is also industrially applicable, novel and progressive, and fully meets the requirements for patent application. Therefore, an application is filed in accordance with the Patent Law to protect the rights of the creator.

10: Bearing structure 1: Bearing body 11: Inner ring body 111: Ring block 12: Outer ring body 13: First concave hole 14: Annular groove 15: Through hole 151: First ramp block 16: Straight groove 161: Expanding section 2: One-way ratchet module 21: First ratchet ring 211: First one-way ratchet 212: First inclined chamfer 213: First step difference 22: Second ratchet ring 221: Second one-way ratchet 222: Second inclined chamfer 223: Second step difference 224: Second concave hole 225: Second ramp block 23: Elastic element 100: Pedal shaft 200: Actuating gear 300: Motor

Figure 1 is a three-dimensional diagram of the bearing structure of this invention in use.

Figure 2 is a cross-sectional view of the bearing structure of this invention in use.

Figure 3 is a 3D exploded view of the inner ring, the second ratchet ring and the elastic element of this creation.

Figure 4 is a three-dimensional exploded view of the bearing structure of this creation.

Figure 5 is a three-dimensional assembly diagram of the bearing structure of this creation.

Figure 6 is a three-dimensional cross-sectional view of the bearing structure of this creation.

Figure 7 is another three-dimensional assembly diagram of the bearing structure of this creation.

Figure 8 is another three-dimensional combination diagram of the bearing structure of this creation.

Figure 9 is another three-dimensional cross-sectional view of the bearing structure of this creation.

FIG. 10 is a cross-sectional view of the bearing structure of the present invention in another usage state.

11: Inner ring body

12: Outer ring

2: One-way ratchet module

21: First thorn ring

211: First one-way ratchet

212: First tilt lead angle

213: The first section

22: Second thorn ring

221: Second one-way ratchet

222: Second tilt lead angle

223: The second section

23: Elastic element

100: pedal shaft

200: Actuating gear

Claims (10)

A bearing structure capable of unidirectional rotation and freewheeling comprises: a bearing body, comprising an inner ring body and an outer ring body rotatably sleeved on the outer side of the inner ring body; and a one-way ratchet module, comprising a first ratchet ring, extending from one end of one of the inner ring body and the outer ring body along the circumference thereof, the first ratchet ring having a plurality of first one-way ratchets; a second ratchet ring, movably sleeved on the other of the inner ring body and the outer ring body, the second ratchet ring having a plurality of second one-way ratchets; and A plurality of elastic elements are elastically supported between the inner ring body, the other of the outer ring body and the second ratchet ring, and the plurality of elastic elements are used to push the plurality of second one-way ratchets against the plurality of first one-way ratchets. A unidirectionally rotatable and idling bearing structure as described in claim 1, wherein the other of the inner ring body and the outer ring body is provided with a plurality of first recessed holes, the second ratchet ring is provided with a plurality of second recessed holes, and the two ends of each elastic element are respectively embedded in each of the first recessed holes and each of the second recessed holes. A bearing structure capable of unidirectional rotation and free-wheeling as described in claim 2, wherein the other of the inner ring body and the outer ring body is provided with an annular groove and a plurality of through-holes and a plurality of straight grooves arranged on both sides of the annular groove and connected to the annular groove, the plurality of through-holes and the plurality of straight grooves are staggered, the plurality of straight grooves and the plurality of first recessed holes are arranged opposite to each other, and each of the elastic elements is embedded in each of the straight grooves. As described in claim 3, the bearing structure capable of unidirectional rotation and free-wheeling is characterized in that the intersection of each of the straight grooves and the annular groove has an expansion section whose opening size gradually expands toward the annular groove. A bearing structure capable of unidirectional rotation and free-wheeling as described in claim 3, wherein the other of the inner ring body and the outer ring body has a plurality of first ramp blocks extending from the inner wall of the plurality of through-holes, and the second ratchet ring has a plurality of second ramp blocks extending from the second ratchet ring and arranged opposite to the plurality of second recessed holes, each of the second ramp blocks can pass through each of the through-holes and the annular groove and can be movably accommodated in each of the vertical grooves, and each of the second ramp blocks can be stopped and limited by each of the first ramp blocks. A unidirectionally rotatable and idling bearing structure as described in claim 5, wherein the first ratchet ring is formed by extending from one end of the outer ring body along its circumference, the second ratchet ring can be movably sleeved on the inner ring body, the outer peripheral wall of the inner ring body has a ring block protruding along its circumference, the plurality of first recessed holes are opened from the ring block, the annular groove, the plurality of through openings and the plurality of straight grooves are opened from the outer peripheral wall of the inner ring body. A unidirectionally rotatable and idling bearing structure as described in claim 1, wherein each of the first unidirectional ratchets has a first inclined chamfer with a thickness gradually increasing along a first direction on one side and a first step difference portion on the other side, and each of the second unidirectional ratchets has a second inclined chamfer with a thickness gradually increasing along a second direction on one side and a second step difference portion on the other side, and the first direction is opposite to the second direction. As described in claim 7, the bearing structure capable of unidirectional rotation and free-wheeling, wherein each of the first step portions and each of the second step portions will be locked when they abut against each other, so that the first ratchet ring and the second ratchet ring rotate together. As described in claim 7, the bearing structure capable of unidirectional rotation and free-wheeling, wherein each of the first inclined chamfers and each of the second inclined chamfers will slide against each other when they abut against each other, so that the first ratchet ring and the second ratchet ring will rotate relative to each other. A bearing structure capable of unidirectional rotation and free-wheeling as described in claim 1, wherein each elastic element is a coil spring.