CN211188933U - Damper with electric adjustment and magnetic control - Google Patents
Damper with electric adjustment and magnetic control Download PDFInfo
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- CN211188933U CN211188933U CN201921257425.5U CN201921257425U CN211188933U CN 211188933 U CN211188933 U CN 211188933U CN 201921257425 U CN201921257425 U CN 201921257425U CN 211188933 U CN211188933 U CN 211188933U
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Abstract
The utility model provides a attenuator of electronic adjustment magnetic control, include: a force application unit, a magnetic control unit, a driving unit and a control unit; the force application unit generates axial displacement by a transmission rod, and then drives the screw rod and the rotor provided with the magnetic conduction ring to rotate through a threaded sleeve, the magnetic control unit is provided with a fixed seat which can linearly displace and is provided with a permanent magnet, the driving unit is provided with a motor and a gear set, and the control unit can input a desired damping value and drive the motor to rotate; therefore, the fixed seat is driven by the motor and the gear set to move, a desired gap is generated between the permanent magnet of the fixed seat and the magnetic conduction ring of the rotor, eddy load is generated to form damping of the rotation of the rotor and the axial displacement of the transmission rod, and the damper achieves the effect of exercise and fitness.
Description
Technical Field
The present invention relates to a damper, and more particularly to an electrically controlled damper which controls the displacement of a fixing base to achieve a desired gap between a permanent magnet and a magnetic conductive ring, thereby generating a vortex load to form a motion damping.
Background
In indoor sports or rehabilitation equipment, most of the actuating mechanisms are provided with damping devices, such as: rowing machines, muscle trainers … …, etc.; because the sports equipment is limited in space, the damper of the sports equipment is mostly of a hydraulic cylinder structure. The cylinder body of the hydraulic cylinder is filled with hydraulic oil, a piston is arranged in the cylinder body, a pore passage is formed in the piston, a piston rod is arranged at one end of the piston, and when the piston rod linearly displaces in the cylinder body under the action of axial acting force, the hydraulic oil circulates through the pore passage on the piston to generate a damping effect.
A non-hydraulic damper for converting circular motion by linear displacement and obtaining magnetic resistance, as shown in fig. 1A, the utility model is mainly characterized in that: a transmission rod 930 axially displaces in the cylinder 920, and a screw 950 is driven to rotate through a threaded sleeve 940, so as to drive a ring frame 960 provided with a permanent magnet 963 to circumferentially rotate, and since a gap is formed between the permanent magnet 963 and a magnetic conductive surface 973 of the cover 970, the gap generates an eddy current load, thereby damping the displacement motion of the transmission rod 930. Although the utility model can improve the problem of oil leakage of the hydraulic cylinder, the eddy load formed between the permanent magnet 963 and the magnetic conductive surface 973 is fixed, in other words, the device can only provide a fixed damping value; however, in reality, the motion damping cannot be changed, and it is difficult to meet the motion requirements of different use stages.
An adjustable damper, as shown in fig. 1B, which is a patent No. 14/993,685, includes a cylinder 820, a transmission rod 830 axially displaceable in the cylinder 820, and a screw sleeve 840 connected to the transmission rod 830 for driving a screw 850 to rotate, thereby driving a ring frame 860 with permanent magnets 863 to rotate circumferentially, and further enabling a ring body 894 of the actuating ring 893 to generate reciprocating displacement by the rotation of a rotating cap 890; because the inner edge of the ring 894 is provided with a magnetic conductive surface 895, and the magnetic conductive surface 895 and the outer periphery of the permanent magnet 863 have an annular gap, the displaced ring 894 can change the effective areas of the permanent magnet 863 and the magnetic conductive surface 895 and the eddy current load formed thereby, and accordingly adjust the damping of the displacement motion of the transmission rod 830.
Although the adjustable damper can adjust the damping according to the requirement of a user; however, the manually adjustable swivel cap 890 has no setting and feedback mechanism, and the user can only feel the change in damping by turning the swivel cap 890 by feel, which is unacceptable to the user because the manually adjustable motion damping device cannot accurately provide the desired damping value.
SUMMERY OF THE UTILITY MODEL
Accordingly, the primary objective of the present invention is to provide an electrically controlled damper capable of adjusting the damping by means of the linear displacement of the motor-driven fixing base to change the eddy current load generated in the gap between the force application unit and the magnetic control unit.
Another object of the present invention is to provide an electrically controlled damper which can set a damping value and drive a motor by a control unit, so that a desired eddy current load is generated between a force application unit and a magnetic control unit, thereby precisely controlling the damping value.
In order to achieve the above object, the present invention provides a damper with electrically adjustable magnetic control, comprising:
a force application unit having a cylinder body, the inner edge of which is provided with a first axial channel, and one end of which is provided with a first through hole; a transmission rod, which passes through the first axial channel and protrudes outside the first through hole, and the outer end of the transmission rod is provided with a first pivoting part; the screw sleeve is nested at the outer edge of the inner side end of the transmission rod, so that the screw sleeve and the transmission rod can be in linkage axial displacement in the first axial channel; a screw rod which is provided with a shaft rod section and a thread section which can be screwed with the screw sleeve, and the screw rod can be in a rotatable state by making the screw sleeve perform axial displacement; a rotor, which is sleeved on the shaft lever section and the outer periphery of which is provided with a magnetic conduction ring; a first housing having a first receiving space for receiving the rotor, a lower cover for fixedly connecting the cylinder, and an upper cover for connecting a second pivot portion;
a magnetic control unit, having a fixed seat, disposed in the first accommodation space, and provided with a circular arc permanent magnet, which is close to the side of the magnetic conductive ring of the rotor to form a gap and generate eddy current load; the fixing seat is provided with a shaft hole which is sleeved on the outer edge of a nut, the fixing seat is also provided with a rotating shaft, the rotating shaft is provided with a thread section and is screwed with the nut, the rotating shaft extends out of the first shell in a protruding mode, the end portion of the rotating shaft is connected with a driven gear, the driven gear can drive the rotating shaft to rotate, and then the fixing seat is driven to generate linear displacement through the nut;
a driving unit having a motor and a gear set; a second housing having a second receiving space for receiving the motor, and a gear chamber for receiving the gear set; and the driven gear in the magnetic control unit is meshed with the gear set, so that the rotating shaft in the magnetic control unit can be driven by the motor to rotate;
the control unit is arranged on the wall surface of the second shell and provided with an input interface for setting a damping value, and a controller drives the motor to rotate according to the set damping value;
when the force application unit is subjected to axial acting force, the transmission rod can axially displace in the first axial channel and drive the screw rod to rotate through the threaded sleeve so as to drive the rotor and the magnetic conductive ring to circularly rotate; by setting the damping value, the control unit drives the motor of the driving unit to rotate, the gear set is connected with the driven gear to drive the rotating shaft to rotate and enable the fixed seat of the magnetic control unit to generate linear displacement, a desired gap is formed between the permanent magnet and the magnetic conductive ring, and eddy current load generated by the gap forms damping of the axial acting force of the force application unit.
The damper with electric adjustment and magnetic control comprises a control unit and a variable resistor, wherein the control unit further comprises a variable resistor which is arranged in the second accommodating space, the variable resistor comprises an input shaft, the input shaft is connected with the gear set, so that the input shaft can be driven by the motor to rotate, and a signal of a displacement value is fed back to the controller.
The damper with electric adjustment and magnetic control is characterized in that the permanent magnet is composed of a plurality of rubidium magnets.
The damper with electric adjustment and magnetic control is characterized in that the magnetic conduction ring is formed by fixing an annular magnetic conduction piece on the periphery of the rotor.
The damper with electric adjustment and magnetic control comprises a first pivot part and a second pivot part, wherein the first pivot part comprises an oil bearing or a circular tube.
The damper with electric adjustment and magnetic control comprises a second pivot part and a second pivot part, wherein the second pivot part comprises an oil bearing or a round pipe.
With the help of the characteristics of the front cover, the utility model discloses damper of electronic adjustment magnetic control has following benefit:
(1) the utility model converts the linear displacement of the transmission rod into the circular rotation motion of the rotor and the magnetic conductive ring, and drives the permanent magnet of the permanent magnet to form a gap with the magnetic conductive ring of the rotor by means of the motor, and the eddy load generated by the gap forms the damping of the linear displacement of the rotor rotation and the transmission rod; because the utility model replaces the traditional hydraulic cylinder structure with the magnetic resistance, the utility model has the efficacy of no oil leakage and rapid reaction of motion force application; simultaneously the utility model discloses rely on motor drive fixing base displacement, the user need not to use one's hands hard to adjust the motion damping, consequently also has automatic and laborsaving benefit.
(2) The control unit of the present invention comprises an input interface for the user to set the desired damping value, a variable resistor driven by the motor and capable of feeding back the displacement value, and a controller capable of receiving the feedback information and calculating the motor parameter value; then, the motor drives the permanent magnet to move to obtain a desired gap between the permanent magnet and the magnetic conductive ring, and the eddy load generated in the gap can form the damping of the axial acting force by the force application unit.
Drawings
Fig. 1A is a sectional view of the first embodiment of the present invention.
Fig. 1B is a structural sectional view of the second prior art of the present invention.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is an exploded perspective view of the present invention.
Fig. 4A is a combined cross-sectional view of the present invention.
Fig. 4B is a partial combined cross-sectional view of the present invention.
Fig. 5 is an exploded perspective view of the drive unit of the present invention.
Fig. 6 is a schematic configuration diagram of the gear train of the drive unit of the present invention.
Fig. 7 is a schematic diagram of a magnetic seat displacement pattern of the magnetic control unit of the present invention.
Fig. 8 is a schematic diagram of a magnetic seat displacement pattern of the magnetic control unit of the present invention.
Fig. 9 is a block diagram of the operation steps of the control unit of the present invention.
Description of reference numerals: 10-a force application unit; 11-a cylinder body; 111-a first axial passage; 112-a first via; 113-a second via; 12-a transmission rod; 121-a first pivot; 13-thread sleeve; 14-a screw; 141-a shaft section; 142-a threaded segment; 15-a rotor; 151-magnetic conductive ring; 16-a first housing; 161-a first accommodating space; 162-a lower cover; 163-upper cover; 164-a second pivot; 20-a magnetic control unit; 21-a fixed seat; 211-shaft hole; 22-a permanent magnet; 23-a rotating shaft; 231-a threaded segment; 24-a driven gear; 25-a screw cap; 30-a drive unit; 31-a motor; 32-a drive gear; 33-a second housing; 331-a second accommodating space; 332-gear chamber; 34-a gear set; 341-first transfer gear; 342-a second drive gear; 343-a third transfer gear; 344 — an intermediate gear; 345-gear shafts; 346-shaft seat; 35-a top plate; 36-inner decking; 37-an outer panel; 40-a control unit; 41-input interface; 42-a variable resistor; 43-an input shaft; 44-a controller; 100-an electrically-controlled damper; g-gap/desired gap value; g1 — minimum gap value; g2 — maximum gap value; t1-damping torque; t2-force application Torque.
Detailed Description
First, please refer to fig. 2 to 3 and fig. 4A, which illustrate the damper 100 mechanism for electrically adjusting magnetic control according to the present invention; the method comprises the following steps: a force applying unit 10 having a cylinder 11, a first axial channel 111 disposed at an inner edge thereof, and a first through hole 112 and a second through hole 113 disposed at two ends thereof, respectively; a transmission rod 12 passing through the first axial channel 111 and protruding outside the first through hole 112, and having a first pivot portion 121 at an outer end thereof, wherein the first pivot portion 121 is formed by an oil-retaining bearing or a circular tube; a threaded sleeve 13, which is nested on the outer edge of the inner end of the transmission rod 12, so that the threaded sleeve and the transmission rod 12 can perform interlocked axial displacement in the first axial channel 111; a screw 14 having a shaft section 141 and a threaded section 142 for engaging with the threaded sleeve 13, wherein the screw 14 can be rotated by axially displacing the threaded sleeve 13; a rotor 15, which is sleeved on the shaft rod section 141 of the screw 14, and the outer periphery of which is provided with a magnetic conductive ring 151, and the magnetic conductive ring 151 can be formed by fixing an annular magnetic conductive member on the periphery of the rotor 15; a first housing 16 having a first receiving space 161 for receiving the rotor 15, a lower cover 162 for fixing the second through hole 113 of the cylinder 11, and an upper cover 163 for connecting a second pivot portion 164, wherein the second pivot portion 164 is formed by an oil-retaining bearing or a circular tube; in the above-mentioned force application unit 10, the first pivot portion 121 and the second pivot portion 164 are respectively connected to a force application rod and a fixing portion (not shown) of the exercise device, so that the user can operate the force application rod to cause the transmission rod 12 to generate axial displacement, thereby causing the rotor 15 in the force application unit 10 to generate rotation linkage.
A magnetic control unit 20 (please refer to fig. 4B), having a fixing base 21 disposed in the first accommodating space 161, and having an arc-shaped permanent magnet 22 adjacent to the side of the magnetic conductive ring 151 of the rotor 15, so that a gap G is formed between the permanent magnet 22 and the rotating magnetic conductive ring 151, and thereby generating an eddy current load; the load utilizes the eddy resistance formed by the change of the magnetic field to form the damping required by the body-building exercise; the basic principle is that a conductor is placed in a variable magnetic flux, a counter electromotive force is formed on a local closed circuit in the conductor, so that a so-called eddy current (eddycurrent) is generated, and the magnetic action established by the flowing direction of the eddy current is necessarily opposite to the original magnetic flux variation direction for generating the current; it is further known from Max-well's Eq that the magnitude of the magnetic force is proportional to the square of the magnetic flux density, and the magnetic force provides the damping required for the exercise device. Furthermore, the permanent magnet 22 of the magnetic control unit 20 is composed of plural rubidium magnets, and the fixing base 21 is provided with a shaft hole 211 sleeved on the outer edge of a nut 25, a rotating shaft 23 provided with a threaded section 231 and screwed with the nut 25, and the rotating shaft 23 protrudes outside the first housing 16, and the end part thereof is connected with a driven gear 24, so that the driven gear 24 can drive the rotating shaft 23 to rotate, and further the fixing base 21 is driven by the nut 25 to generate linear displacement in the X-X axial direction; because the driven gear 24 can be controlled to perform forward and backward steering and control the number of rotation turns, the displacement direction and the displacement distance of the fixed seat 21 are also controlled; in other words, the utility model discloses control the rotation of this driven gear 24 and can make this fixing base 21 carry out the displacement to reach required clearance G value between this permanent magnet 22 and this magnetic conductive ring 151, and then rely on the vortex load that its produced in order to obtain the required load damping of body-building motion.
A driving unit 30 (see fig. 5-6) having a motor 31 and a driving gear 32 connected thereto; a second housing 33 having a second receiving space 331 for receiving the motor 31, a gear chamber 332 for receiving the gear set 34 required for speed reduction and transmission, a top plate 35 for fixedly connecting the first housing 16, an inner side plate 36 for protecting the second receiving space 331 to protect the motor 31, and an outer side plate 37 for protecting the gear chamber 332 to protect the gear set 34 from exposure; the gear set 34 includes a first, a second and a third transmission gears 341/342/343 and a plurality of intermediate gears 344, and is driven to rotate by a plurality of pinion shafts 345 inserted in the shaft seats 346; the driving gear 32 is extended into the gear chamber 332 to engage with the first transmission gear 341, so that the rotation speed of the motor 31 is reduced and transmitted to the second and third transmission gears 342/343 through the first transmission gear 341 by the connection of the plurality of intermediate gears 344 in the gear set 34, and the driven gear 24 in the magnetron unit 20 is engaged with the second transmission gear 342, so that the rotating shaft 23 in the magnetron unit 20 can be driven by the motor 31 to rotate.
A control unit 40 (see fig. 2 and 5), having an input interface 41 for a user to set a desired damping value, mounted on the wall of the second housing 33; a variable resistor 42, which is disposed in the second receiving space 331 and has an input shaft 43 extending into the gear chamber 332 and connected to the third transmission gear 343, so that the input shaft 43 is driven by the motor 31 to rotate; a controller (not shown) electrically connected to the motor 31 and the variable resistor 42, so that the controller can drive the motor 31 according to the set desired damping value and receive the displacement value signal fed back by the variable resistor 42 to adjust the rotation of the motor 31.
Thus, the user can operate the force application rod of the fitness equipment to enable the transmission rod 12 to generate axial displacement in the first axial channel 111, and drive the screw 14 to rotate through the threaded sleeve 13, so as to drive the rotor 15 and the magnetic conductive ring 151 to perform circular rotation motion; the user sets a damping value via the input interface 41 of the control unit 40, and the controller of the control unit 40 drives the motor 31 of the driving unit 30 to rotate according to the set damping value; the second transmission gear 342 of the gear set 34 is engaged by the driven gear 24 to drive the rotating shaft 23 to rotate and make the fixed seat 21 of the magnetic control unit 20 generate linear displacement; meanwhile, the input shaft 43 of the variable resistor 42 is connected to the third transmission gear 343 and driven by the motor 31 to rotate, the variable resistor 42 sends a feedback displacement value signal to the controller to adjust the rotation of the motor 31, so that the fixed seat 21 of the magnetron unit 20 is further displaced by the feedback signal of the variable resistor 42, and finally a desired gap is formed between the permanent magnet 22 and the magnetic conductive ring 151, and the eddy current load generated by the gap forms a damping of the rotation of the rotor 15 and the axial displacement of the transmission rod 12.
Please further refer to fig. 7 to 8, which are displacement patterns of the fixing base 21 of the magnetic control unit 20 according to the present invention; according to, the fixed seat 21 is provided with a circular arc-shaped permanent magnet 22, which is close to the side of the magnetic conductive ring 151 arranged on the outer periphery of the rotor 15, the shaft hole 211 of the fixed seat 21 is sleeved on the outer edge of a screw cap 25, the screw cap 25 is screwed with the rotating shaft 23, and the rotating shaft 23 protrudes out of the first shell 16 and is connected with a driven gear 24, so that the driven gear 24 can drive the rotating shaft 23 to rotate, the fixed seat 21 generates linear displacement under the driving of the screw cap 25, and the gap between the permanent magnet 22 and the magnetic conductive ring 151 is changed as a result of the displacement of the fixed seat 21; fig. 7 shows a state where the fixing base 21 is displaced to a position closest to the rotor 15, and a minimum gap value G1 is formed between the permanent magnet 22 and the magnetic conductive ring 151, and the maximum magnetic flux density generated by the minimum gap value G1 is the highest, i.e., the maximum motion damping is obtained; fig. 8 shows a state where the permanent magnet 21 is displaced to the farthest position from the rotor 15, and a maximum gap value G2 is formed between the permanent magnet 22 and the magnetic conductive ring 151, and the minimum magnetic flux density, i.e. the minimum motion damping, is generated by the maximum gap value G2.
FIG. 9 is a block diagram illustrating the operation steps between the components of the control unit 40; firstly, a user sets a desired motion damping value by using the input interface 41, the controller 44 calculates a gap between the permanent magnet 22 and the magnetic conductive ring 151 with reference to the damping value, and calculates a value of a parameter of the motor 31 of the driving unit 30 required to rotate and gives an actuation command, the motor 31 rotates and is respectively transmitted to the second transmission gear 342 through the gear set 34 to drive the driven gear 24 to generate a linear displacement of the fixing seat 21 of the magnetic control unit 20, and is transmitted to the third transmission gear 343 to drive the input shaft 43 to feed a displacement value signal back to the controller 44 through the variable resistor 42, the controller 44 calculates a compensation value of the motor 31 required to rotate, such that the desired gap value G between the permanent magnet 22 and the magnetic conductive ring 151 can be achieved by repeating the above steps, an eddy current load generated by the desired gap value G is a damping torque T1, and a force is applied by the user to the force applying unit 10 to axially displace the transmission rod 12 to drive the rotor 15 to rotate Force moment T2, because application of force moment T2 must be greater than damping moment T1 and can drive this transfer line 12 displacement and rotor 15 rotation, consequently the utility model discloses a organize the attenuator will provide the user and reach the effect of motion body-building.
Because the utility model converts the linear displacement of the transmission rod 12 into the circular rotation motion of the magnetic conductive ring 151, and drives the fixed seat 21 to displace by means of the motor 31, the eddy load formed by the gap between the permanent magnet 22 and the magnetic conductive ring 151 can be used as the damping for the linear displacement of the rotation of the rotor 15 and the transmission rod 12; because the utility model replaces the traditional hydraulic cylinder structure with the magnetic resistance, the utility model has the efficacy of no oil leakage and rapid reaction of motion force application; simultaneously the utility model discloses rely on motor 31 drive fixing base 21 displacement, the user need not to use the hands and difficultly adjusts the motion damping, consequently also has automatic and laborsaving benefit. Furthermore, the control unit 40 of the present invention includes an input interface 41 for the user to set the desired damping value, a variable resistor 42 driven by the motor 31 and capable of feeding back the displacement value, and a controller 44 capable of receiving the feedback information and calculating the parameter value of the motor 31; the utility model discloses rely on motor 31 drive fixing base 21 displacement again, make and obtain the clearance G of desire between permanent magnet 22 and the magnetic ring 151, and the produced eddy current load in this clearance will be according to the damping that carries out axial effort in order to form this force application unit 10, because the utility model discloses pass through the control unit 40 in order to control this fixing base 21 displacement in order to acquire the clearance G of desire, consequently can be according to the efficiency that reaches the accurate control damping value.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A damper for electrically adjusting magnetic control is characterized by comprising:
a force application unit having a cylinder body, the inner edge of which is provided with a first axial channel, and one end of which is provided with a first through hole; a transmission rod, which passes through the first axial channel and protrudes outside the first through hole, and the outer end of the transmission rod is provided with a first pivoting part; the screw sleeve is nested at the outer edge of the inner side end of the transmission rod, so that the screw sleeve and the transmission rod can be in linkage axial displacement in the first axial channel; a screw rod which is provided with a shaft rod section and a thread section which can be screwed with the screw sleeve, and the screw rod can be in a rotatable state by making the screw sleeve perform axial displacement; a rotor, which is sleeved on the shaft lever section and the outer periphery of which is provided with a magnetic conduction ring; a first housing having a first receiving space for receiving the rotor, a lower cover for fixedly connecting the cylinder, and an upper cover for connecting a second pivot portion;
a magnetic control unit, having a fixed seat, disposed in the first accommodation space, and provided with a circular arc permanent magnet, which is close to the side of the magnetic conductive ring of the rotor to form a gap and generate eddy current load; the fixing seat is provided with a shaft hole which is sleeved on the outer edge of a nut, the fixing seat is also provided with a rotating shaft, the rotating shaft is provided with a thread section and is screwed with the nut, the rotating shaft extends out of the first shell in a protruding mode, the end portion of the rotating shaft is connected with a driven gear, the driven gear can drive the rotating shaft to rotate, and then the fixing seat is driven to generate linear displacement through the nut;
a driving unit having a motor and a gear set; a second housing having a second receiving space for receiving the motor, and a gear chamber for receiving the gear set; and the driven gear in the magnetic control unit is meshed with the gear set, so that the rotating shaft in the magnetic control unit can be driven by the motor to rotate;
the control unit is arranged on the wall surface of the second shell and provided with an input interface for setting a damping value, and a controller drives the motor to rotate according to the set damping value;
when the force application unit is subjected to axial acting force, the transmission rod can axially displace in the first axial channel and drive the screw rod to rotate through the threaded sleeve so as to drive the rotor and the magnetic conductive ring to circularly rotate; by setting the damping value, the control unit drives the motor of the driving unit to rotate, the gear set is connected with the driven gear to drive the rotating shaft to rotate and enable the fixed seat of the magnetic control unit to generate linear displacement, a desired gap is formed between the permanent magnet and the magnetic conductive ring, and eddy current load generated by the gap forms damping of the axial acting force of the force application unit.
2. The damper of claim 1, wherein the control unit further comprises a variable resistor disposed in the second receiving space, the variable resistor comprising an input shaft connected to the gear set, such that the input shaft can be driven by the motor to rotate and feed back a displacement signal to the controller.
3. An electrically controlled damper as claimed in claim 1 or 2, wherein the permanent magnet is formed of a plurality of rubidium magnets.
4. An electrically controlled damper as claimed in claim 1 or 2, wherein said magnetic conductive ring is formed by fixing an annular magnetic conductive member to the periphery of said rotor.
5. The damper of claim 1 or 2, wherein the first pivot portion comprises an oil-retaining bearing or a tube.
6. The damper of claim 1 or 2, wherein the second pivot portion comprises an oil-retaining bearing or a tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257425.5U CN211188933U (en) | 2019-08-05 | 2019-08-05 | Damper with electric adjustment and magnetic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257425.5U CN211188933U (en) | 2019-08-05 | 2019-08-05 | Damper with electric adjustment and magnetic control |
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| Publication Number | Publication Date |
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| CN211188933U true CN211188933U (en) | 2020-08-07 |
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| CN201921257425.5U Active CN211188933U (en) | 2019-08-05 | 2019-08-05 | Damper with electric adjustment and magnetic control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041305A1 (en) * | 2020-08-28 | 2022-03-03 | 宁波道康智能科技有限公司 | Electromagnetic control-based wheel resistance adjusting apparatus |
-
2019
- 2019-08-05 CN CN201921257425.5U patent/CN211188933U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041305A1 (en) * | 2020-08-28 | 2022-03-03 | 宁波道康智能科技有限公司 | Electromagnetic control-based wheel resistance adjusting apparatus |
| US11794055B2 (en) | 2020-08-28 | 2023-10-24 | Ningbo Daokang Intelligent Technology Co., Ltd | Electromagnetically controlled wheel resistance adjusting device |
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