CN221438253U - Gear rack type energy feedback vibration reduction front fork for electric bicycle - Google Patents

Abstract

The utility model discloses a gear rack type energy feedback vibration reduction front fork for an electric bicycle, which comprises a main body frame, an energy feedback vibration reduction component and a connecting component connected to the main body frame, the energy feedback vibration reduction component comprises a transmission box with an upward opening fixedly connected to the main body frame, a double-shaft generator is fixedly connected in the transmission box, both ends of the double-shaft generator are respectively connected to energy feedback vibration reduction gears, vibration reduction racks respectively matched with the energy feedback vibration reduction gears are slidably connected in the transmission box, the moving direction of the vibration reduction rack is parallel to the central axis of the inner cylinder, the connecting component comprises two inner cylinders which correspond to the vibration reduction racks one by one and are respectively fixedly connected to the transmission box, and the lower part of the vibration reduction rack is fixedly connected to an outer cylinder which can just slide along the outer side of the inner cylinder; the utility model can achieve the effect of vibration reduction while realizing power generation.

Description

A rack and pinion energy-feeding vibration-reducing front fork for electric bicycle

Technical Field

The utility model relates to the technical field of electric bicycles, in particular to a rack and pinion type energy-feeding vibration-reducing front fork for electric bicycles.

Background technique

The shock absorber is a very important component on the vehicle. It can reduce the impact of road surface unevenness on the smoothness of the vehicle's driving and improve the comfort of the driver. Most of the front forks of existing electric bicycles use oil-type shock absorbers, and the vibration energy will be directly dissipated by the shock absorber. If this energy can be recovered and converted, it will be of great help and value to improve the operation of the vehicle. The energy feedback shock absorber can recycle and reuse this energy to improve the efficiency of energy use. In the prior art, there is a kind of energy feedback shock absorber, which converts the reciprocating motion between the shells into the rotational motion of the ball screw, and drives the motor to rotate to achieve energy feedback. First, when the energy feedback shock absorber is used in a vehicle, it is very likely to cause damage to the internal components of the shock absorber during the bumpy process. At the same time, the ball screw has a precise structure, which is difficult to repair and replace when damaged, and the manufacturing cost is high; secondly, the energy feedback shock absorber is used on cars and cannot be used on electric vehicles. In addition, the energy feedback vibration dampers used in electric vehicles are very rare and there is no good solution. If the energy feedback vibration damping technology is used in electric vehicles, a better working environment can be obtained and higher power generation efficiency can be obtained. At the same time, it also meets the vibration reduction needs of electric bicycles. It has broad market prospects and application value. Therefore, it is necessary to develop an energy feedback vibration damping structure for electric bicycles.

Utility Model Content

The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

In view of the above problems and/or the problems existing in the existing electric bicycles, the present utility model is proposed.

Therefore, the purpose of the utility model is to provide a rack and pinion energy-feeding vibration-damping front fork for an electric bicycle, which can achieve the effect of generating electricity and reducing vibration at the same time.

In order to solve the above technical problems, the utility model provides the following technical solutions: a gear rack type energy feedback vibration reduction front fork for an electric bicycle, which includes a main body frame, to which is connected an energy feedback vibration reduction assembly and a connecting assembly, the energy feedback vibration reduction assembly includes a transmission box with an upward opening fixedly connected to the main body frame, a dual-axis generator is fixedly connected in the transmission box, both ends of the dual-axis generator are respectively connected to energy feedback vibration reduction gears, a vibration reduction rack respectively matched with the energy feedback vibration reduction gears is slidably connected in the transmission box, the moving direction of the vibration reduction rack is parallel to the central axis of the inner cylinder, the connecting assembly includes two inner cylinders corresponding to the vibration reduction racks one by one and fixedly connected to the transmission box respectively, and the lower part of the vibration reduction rack is fixedly connected to an outer cylinder that can just slide along the outer side of the inner cylinder.

When riding an electric bicycle, if you encounter a bumpy road surface, the two outer cylinders move up and down at the same time, and the vibration-damping rack drives the corresponding energy feedback vibration-damping gear to rotate. The energy feedback vibration-damping gear rotates at the same speed to transmit power to the dual-axis generator. The dual-axis generator transmits the electromagnetic damping force back to the vibration-damping rack while generating electricity. This damping force acts on the vibration-damping rack in the opposite direction through the energy feedback vibration-damping gear, slowing down the movement of the rack and playing a role in vibration reduction and buffering. The utility model can not only achieve vibration reduction during riding, but also transmit the power generated during the bumpy process to the dual-axis generator to achieve power generation.

As a further improvement of the utility model, a rack fixing cylinder is connected to the outer cylinder, the lower end of the damping rack extends into the rack fixing cylinder and is fixedly connected to the rack fixing cylinder, and a reset spring mounted on the rack is fixedly connected between the upper side of the rack fixing cylinder and the lower side of the inner cylinder.

As a further improvement of the utility model, a limiting ring is fixedly connected to the lower side of the inner cylinder, and the upper end of the return spring is connected to the lower side of the limiting ring.

As a further improvement of the utility model, a fixing sleeve is sleeved on the outer periphery of the inner cylinder, the outer cylinder is connected to the fixing sleeve, and the inner ring of the fixing sleeve is just slidably connected to the inner cylinder.

As a further improvement of the utility model, a fixing ring is fixed inside the fixing sleeve, the lower side of the fixing ring can contact the upper side of the limiting ring, the inner ring of the outer cylinder fits on the outer ring of the fixing ring, and the outer ring of the outer cylinder is threadedly connected to the fixing sleeve.

As a further improvement of the present utility model, an installation groove is formed on the upward end of the outer cylinder, an insertion groove is formed on the upward end of the rack fixing cylinder, at least one inner connecting hole is formed on the lower part of the vibration-damping rack, and a plurality of intermediate connecting holes corresponding to the inner connecting holes are formed on the rack fixing cylinder. The lower part of the vibration-damping rack is inserted into the insertion groove, and when the bottom of the vibration-damping rack abuts against the rack fixing cylinder on the lower side of the insertion groove, the inner connecting hole can be coaxial with the corresponding intermediate connecting hole, and a plurality of outer connecting holes corresponding to the intermediate connecting holes are formed on the outer cylinder, and when the bottom of the rack fixing cylinder abuts against the inner part of the outer cylinder, the outer connecting hole can be coaxial with the intermediate connecting hole.

As a further improvement of the present utility model, two spaced-apart motor brackets are fixedly connected to the inner side of the transmission box, the dual-shaft generator is fixedly connected between the two motor brackets, both ends of the dual-shaft generator are connected to power input and output shafts, one end of the power input and output shaft is rotatably connected to the corresponding motor bracket, and the other end of the power input and output shaft is rotatably connected to the transmission box via a support bearing, and the two energy feedback and vibration reduction gears are respectively fixedly connected to the two power input and output shafts.

As a further improvement of the utility model, the transmission box is provided with two sliding grooves corresponding to the racks one by one, and the upper part of the rack is slidably connected to the transmission box through the sliding grooves.

As a further improvement of the utility model, a guide hole is opened on the limit ring for the rack to pass through.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

Fig. 1 is a front view of the utility model.

FIG. 2 is a partial exploded three-dimensional structural diagram of the present invention.

FIG. 3 is a partial enlarged view of point A in FIG. 2 .

FIG. 4 is a second partial exploded three-dimensional structure diagram of the present invention.

FIG. 5 is a partial enlarged view of point B in FIG. 4 .

FIG. 6 is a three-dimensional structural diagram of the vibration-damping rack in the utility model.

In the figure, 1 connecting assembly, 101 outer cylinder, 102 rack fixing cylinder, 103 return spring, 104 inner cylinder, 105 fixing sleeve, 105a fixing ring, 106 limiting ring, 106a guide hole, 2 main frame, 201 guide rod, 202 connecting seat, 3 energy feeding vibration reduction assembly, 301 box cover, 302 transmission box, 302a opening, 302b sliding groove, 303 dual-axis generator, 304 vibration reduction rack, 305 support bearing, 306 motor bracket, 307 power input and output shaft, 308 energy feeding vibration reduction gear.

Detailed ways

In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

Example 1

1 to 3 , which are the first embodiment of the utility model, a rack and pinion energy-feeding vibration-damping front fork for an electric bicycle is provided, which has a simple and reliable structure and can realize both power generation and vibration reduction.

A gear rack type energy-feeding vibration-damping front fork for an electric bicycle comprises a main frame 2, to which an energy-feeding vibration-damping assembly 3 and a connecting assembly 1 are connected, the energy-feeding vibration-damping assembly 3 comprises a transmission box 302 having an upward opening 302a fixedly connected to the main frame 2, a box cover 301 fixedly connected to the upper side of the transmission box 302, two motor brackets 306 arranged at intervals are also fixedly connected to the inner side of the transmission box 302, a dual-shaft generator 303 is fixedly connected between the two motor brackets 306, both ends of the dual-shaft generator 303 are connected to power input and output shafts 307 rotatably connected to the motor brackets 306, and one end of the power input and output shaft 307 away from the dual-shaft generator 303 is rotatably connected via a support bearing 305. In the transmission box 302, the two power input and output shafts 307 are respectively fixedly connected with energy feeding and vibration damping gears 308, and the transmission box 302 is slidably connected with vibration damping racks 304 that respectively cooperate with the energy feeding and vibration damping gears 308. The moving direction of the vibration damping rack 304 is parallel to the central axis of the inner cylinder 104. Two sliding grooves 302b corresponding to the racks are opened on the transmission box 302. The upper part of the rack is slidably connected to the transmission box 302 through the sliding grooves 302b. The connecting assembly 1 includes two inner cylinders 104 corresponding to the vibration damping racks 304 one by one and fixedly connected to the transmission box 302 respectively, and the lower part of the vibration damping rack 304 is fixedly connected with an outer cylinder 101 that can just slide along the outer side of the inner cylinder 104.

The main frame 2 in the present application includes a connecting seat 202, on which a guide rod 201 is fixedly connected, and the guide rod 201 is connected to the steering handle; when riding an electric bicycle, if a bumpy road is encountered, the two outer cylinders 101 move up and down at the same time, and the vibration reduction rack 304 drives the corresponding energy feedback vibration reduction gear 308 to rotate, and the energy feedback vibration reduction gear 308 rotates at the same speed to transmit power to the dual-axis generator 303. The dual-axis generator 303 is a dual-axis permanent magnet generator. The dual-axis generator 303 transmits the electromagnetic damping force back to the vibration reduction rack 304 while generating electricity. This damping force is reversed through the energy feedback vibration reduction gear The wheel 308 acts on the vibration-damping rack 304 (a magnet is installed on the rotor of the dual-axis permanent magnet generator. After being driven, the rotor rotates to drive the magnetic field of the magnet to rotate, and the coil surrounding the stator cuts the magnetic field to generate induced electromotive force and induced current. The Ampere force generated according to Lenz's law will hinder the rotation of the rotor. This electromagnetic damping force passes through the motor shaft and the energy feedback vibration-damping gear 308, and is finally transmitted back to the rack), slowing down the movement of the rack and playing a role in vibration reduction and buffering; the utility model can not only achieve vibration reduction during riding, but also transmit the power generated during the bumpy process to the dual-axis generator 303 to achieve power generation.

In order to further realize the resetting of the outer cylinder 101 when it moves up and down, a rack fixing cylinder 102 is connected inside the outer cylinder 101, the lower end of the vibration-damping rack 304 extends into the rack fixing cylinder 102 and is fixedly connected to the rack fixing cylinder 102, and a resetting spring 103 mounted on the rack is fixedly connected between the upper side of the rack fixing cylinder 102 and the lower side of the inner cylinder 104.

The return spring 103 plays a buffering role in the compression stroke and helps the outer tube 101 to return to its original position in the extension stroke.

Example 2

4 and 5 , there is shown a second embodiment of the present utility model. This embodiment is different from the previous embodiment in that it can limit the maximum stretching stroke of the outer cylinder 101 .

Specifically, the inner side of the lower part of the inner cylinder 104 is threadedly connected to the limit ring 106, and the limit ring 106 is provided with a guide hole 106a for the vibration damping rack 304 to pass through, so as to improve the reliability of the up and down movement of the vibration damping rack 304. The upper end of the reset spring 103 is connected to the lower side of the limit ring 106, and the outer periphery of the inner cylinder 104 is sleeved with a fixing sleeve 105, and a fixing ring 105a is fixed inside the fixing sleeve 105, and the lower side of the fixing ring 105a can contact the upper side of the limit ring 106, and the inner ring of the outer cylinder 101 is attached to the outer ring of the fixing ring 105a, and the inner ring of the fixing ring 105a just slides along the inner cylinder 104, and the outer ring of the outer cylinder 101 is threadedly connected to the fixing sleeve 105.

When the lower side of the fixing ring 105a contacts the upper side of the limiting ring 106, the outer cylinder 101 cannot move downward further, and at this time, the return spring 103 will not move downward further, limiting its maximum stretching stroke.

Example 3

2 , 4 and 6 , there is shown a third embodiment of the present utility model. This embodiment is different from the above two embodiments in that it can further facilitate the connection between the rack and the outer cylinder 101 .

Specifically, an installation groove is formed at the upward end of the outer cylinder 101, and an insertion groove is formed at the upward end of the rack fixing cylinder 102. At least one inner connecting hole is formed at the lower part of the vibration-damping rack 304. The rack fixing cylinder 102 is formed with a plurality of intermediate connecting holes corresponding to the inner connecting holes one by one. The lower part of the vibration-damping rack 304 is inserted into the insertion groove. When the bottom of the vibration-damping rack 304 abuts against the rack fixing cylinder 102 at the lower side of the insertion groove, the inner connecting hole can be coaxial with the corresponding intermediate connecting hole. The outer cylinder 101 is formed with a plurality of outer connecting holes corresponding to the intermediate connecting holes one by one. When the bottom of the rack fixing cylinder 102 abuts against the inner part of the outer cylinder 101, the outer connecting hole can be coaxial with the intermediate connecting hole.

When the outer cylinder 101 is connected to the rack, the lower part of the rack is inserted into the plug-in groove, and the bottom of the rack abuts against the rack fixing cylinder 102. The inner connecting hole and the middle connecting hole are coaxial. The rack fixing cylinder 102 is inserted into the outer cylinder 101 so that it abuts against the outer cylinder 101. At this time, the outer connecting hole and the middle connecting hole are coaxial. Use the fastening screws to screw into the outer connecting hole, the corresponding middle connecting hole and the inner connecting hole in turn to fix the outer cylinder 101, the rack fixing cylinder 102 and the rack together, and rotate the fixing sleeve 105 to thread it onto the upper part of the outer cylinder 101.

Specifically, two lower connecting holes are opened on the lower side of the outer cylinder 101, and two connecting countersunk holes coaxial with the lower connecting holes are opened on the bottom of the rack fixing cylinder 102. When the outer connecting hole and the corresponding middle connecting hole are coaxial, the connecting countersunk holes and the corresponding lower connecting hole are coaxial.

The rack fixing cylinder 102 is further fixedly connected to the outer cylinder 101 by using a fastening screw to be screwed into the upper connection positioning countersunk hole through the lower connection positioning hole, thereby improving the reliability of the connection structure.

It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. The front-to-back direction described in this application refers to the direction perpendicular to the paper plane and parallel to the front-to-back direction with reference to the main view. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims (9)

1. A rack and pinion formula for electric bicycle feed can damping front fork, its characterized in that: the novel energy-saving vibration-reducing device comprises a main body frame (2), a feed energy-reducing vibration-reducing assembly (3) and a connecting assembly (1) are connected to the main body frame (2), the feed energy-reducing vibration-reducing assembly (3) comprises a transmission case (302) which is fixedly connected to the main body frame (2) and provided with an upward opening (302 a), a double-shaft generator (303) is fixedly connected to the transmission case (302), feed energy-reducing gears (308) are respectively connected to two ends of the double-shaft generator (303), vibration-reducing racks (304) which are matched with the feed energy-reducing gears (308) are connected to the transmission case (302) in a sliding manner, the moving direction of the vibration-reducing racks (304) is parallel to the central axis of the inner cylinder (104), the connecting assembly (1) comprises two inner cylinders (104) which are in one-to-one correspondence with the vibration-reducing racks (304) and are respectively fixedly connected to the transmission case (302), and the outer cylinder (101) which can just slide along the outer side of the inner cylinder (104) is fixedly connected to the lower part of the vibration-reducing racks (304).

2. The rack and pinion energy feedback vibration damping front fork for an electric bicycle as claimed in claim 1, wherein: the vibration reduction device is characterized in that a rack fixing cylinder (102) is connected in the outer cylinder (101), the lower end of the vibration reduction rack (304) extends into the rack fixing cylinder (102) and is fixedly connected with the rack fixing cylinder (102), and a reset spring (103) sleeved on the rack is fixedly connected between the upper side of the rack fixing cylinder (102) and the lower side of the inner cylinder (104).

3. The rack and pinion type energy feedback vibration damping front fork for an electric bicycle as claimed in claim 2, wherein: the lower side of the inner cylinder (104) is fixedly connected with a limiting ring (106), and the upper end of the return spring (103) is connected to the lower side of the limiting ring (106).

4. A rack and pinion energy feedback vibration damping front fork for an electric bicycle as defined in claim 3, wherein: the outer circumference of the inner cylinder (104) is sleeved with a fixing sleeve (105), the outer cylinder (101) is connected to the fixing sleeve (105), and the inner ring of the fixing sleeve (105) is just connected to the inner cylinder (104) in a sliding manner.

5. The rack and pinion type energy feedback vibration damping front fork for an electric bicycle as claimed in claim 4, wherein: the inner side of the fixed sleeve (105) is fixed with a fixed ring (105 a), the lower side of the fixed ring (105 a) can be contacted with the upper side of the limiting ring (106), the inner ring of the outer cylinder (101) is attached to the outer ring of the fixed ring (105 a), and the outer ring of the outer cylinder (101) is connected to the fixed sleeve (105) through threads.

6. The rack and pinion energy feed vibration damping front fork for an electric bicycle according to any one of claims 2 to 5, wherein: the device is characterized in that an installation sinking groove is formed in one upward end of the outer cylinder (101), an inserting sinking groove is formed in one upward end of the rack fixing cylinder (102), at least one inner connecting hole is formed in the lower portion of the vibration reduction rack (304), a plurality of middle connecting holes corresponding to the inner connecting holes one by one are formed in the rack fixing cylinder (102), the lower portion of the vibration reduction rack (304) is inserted into the inserting sinking groove, when the bottom of the vibration reduction rack (304) is abutted to the rack fixing cylinder (102) at the lower side of the inserting sinking groove, the inner connecting holes can be coaxial with the corresponding middle connecting holes, a plurality of outer connecting holes corresponding to the middle connecting holes one by one are formed in the outer cylinder (101), and when the bottom of the rack fixing cylinder (102) is abutted to the outer cylinder (101), the outer connecting holes can be coaxial with the middle connecting holes.

7. The rack and pinion energy feed vibration damping front fork for an electric bicycle according to any one of claims 1 to 5, wherein: the motor transmission mechanism is characterized in that motor brackets (306) arranged at intervals are fixedly connected to the inner side of the transmission case (302), the double-shaft generator (303) is fixedly connected between the two motor brackets (306), two ends of the double-shaft generator (303) are connected with power input output shafts (307), one ends of the power input output shafts (307) are rotationally connected to the corresponding motor brackets (306), the other ends of the power input output shafts (307) are rotationally connected to the transmission case (302) through support bearings (305), and two energy-feedback vibration reduction gears (308) are respectively and fixedly connected to the two power input output shafts (307).

8. The rack and pinion energy feed vibration damping front fork for an electric bicycle according to any one of claims 1 to 5, wherein: two sliding grooves (302 b) which are in one-to-one correspondence with the racks are formed in the transmission case (302), and the upper parts of the racks are connected to the transmission case (302) in a sliding mode through the sliding grooves (302 b).

9. The rack and pinion energy feed vibration damping front fork for an electric bicycle according to any one of claims 3 to 5, wherein: the limiting ring (106) is provided with a guide hole (106 a) which just enables the rack to pass through.