CN211391588U - Tower footing and electric power-assisted bicycle - Google Patents
Tower footing and electric power-assisted bicycle Download PDFInfo
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- CN211391588U CN211391588U CN201922484347.9U CN201922484347U CN211391588U CN 211391588 U CN211391588 U CN 211391588U CN 201922484347 U CN201922484347 U CN 201922484347U CN 211391588 U CN211391588 U CN 211391588U
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Abstract
The utility model provides a tower footing and an electric power-assisted bicycle, which relates to the field of bicycles, wherein the tower footing comprises a tower footing body, a tower footing shell, a bracket and a stepping speed sensor; the tower footing body is arranged in the tower footing shell in a penetrating way; one end of the tower footing body is fixedly connected with one end of the tower footing outer shell, the other end of the tower footing body is rotatably connected with the other end of the tower footing outer shell, and a one-way rotating structure is arranged at the other end of the tower footing body; the support and the tower foundation body are arranged in a split manner, and the tower foundation body can rotate relative to the support; the stepping speed sensor comprises a ferromagnetic component and a speed sensing element; ferromagnetic part is fixed in the column foot body, and speed sensing element installs in the support and corresponds each other with ferromagnetic part, and speed sensing element can respond to ferromagnetic part's rotational speed, and electric bicycle includes control system, motor and aforementioned column foot, the utility model discloses the speed sensor that steps on that has alleviated existence among the prior art at least installs in the five-way position and leads to the technical problem of assembly difficulty.
Description
Technical Field
The utility model belongs to the technical field of the bicycle technique and specifically relates to a column foot and electric bicycle.
Background
At present, in the field of bicycles, a stepping speed sensor is usually arranged at a five-way position of a bicycle, wherein the five-way position is a position where a chain wheel is arranged on a bicycle frame, a middle pipe and a seat pipe are connected, and the technical problem of difficult assembly exists at the bottommost part of the bicycle frame.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a column foot and electric power assisted bicycle to alleviate the step flat speedtransmitter that exists among the prior art and install in the technical problem that five-way position leads to the assembly difficulty.
For realizing the purpose of the utility model, the embodiment of the utility model adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a tower footing, including a tower footing body, a tower footing casing, a bracket, and a leveling speed sensor;
the tower footing body is arranged in the tower footing outer shell in a penetrating way; one end of the tower footing body is fixedly connected with one end of the tower footing outer shell, the other end of the tower footing body is rotatably connected with the other end of the tower footing outer shell, and a one-way rotating structure is mounted at the other end of the tower footing body;
the support and the tower footing body are arranged in a split manner, and the tower footing body can rotate relative to the support;
the stepping speed sensor comprises a ferromagnetic component and a speed sensing element;
the ferromagnetic component is fixedly connected to the tower footing body, the speed sensing element is mounted on the bracket, the speed sensing element and the ferromagnetic component correspond to each other, and the speed sensing element is configured to sense the rotating speed of the ferromagnetic component.
In an alternative embodiment, one end of the foundation body is fixedly connected with one end of the foundation shell through a spline.
In an alternative embodiment, a ball is provided between the other end of the foundation body and the other end of the foundation shell.
In an alternative embodiment, the unidirectional rotation structure includes a pawl and an elastic member; a pawl groove is formed in the outer peripheral surface of the other end of the tower footing body, and the pawl is fixed inside the pawl groove through the elastic piece;
or the unidirectional rotating structure comprises a unidirectional bearing, and the unidirectional bearing is sleeved outside the other end of the tower footing body.
In an alternative embodiment, the tower foundation further comprises a torque sensing device; the torque sensing device comprises a torque signal processor and a sensing part;
the tower footing body comprises a relative rotating part, a moment induction deformation part and a load connecting part, wherein the relative rotating part, the moment induction deformation part and the load connecting part are sequentially connected from one end of the tower footing body to the other end of the tower footing body;
the sensing part is arranged on the moment sensing deformation part and is used for sensing the torque of the moment sensing deformation part; the torque signal processor is arranged on the bracket and is in electric wire connection or signal connection with the sensing part, and the torque signal processor is used for receiving and outputting a torque signal sensed by the sensing part.
In an alternative embodiment, the induction part comprises a torsion induction soft magnetic deformation unit and an induction coil;
the torque induction soft magnetic deformation unit is arranged on the inner peripheral surface of the torque induction deformation part;
the bracket is arranged in the tower footing body in a penetrating mode, the induction coil is arranged on the bracket, and the position of the induction coil corresponds to the position of the torsion induction soft magnetic deformation unit; the torque signal processor is mounted on the bracket and electrically connected with the induction coil.
In an alternative embodiment, the induction portion comprises a strain sensor, a first induction coil and a second induction coil;
the strain sensor is fixed on the moment induction deformation part and used for inducing the torque of the moment induction deformation part, the first induction coil is fixed on the tower footing body and is connected with the strain sensor circuit;
the second induction coil and the torque signal processor are both arranged on the bracket, the second induction coil is in circuit connection with the torque signal processor, and the position of the second induction coil corresponds to the position of the first induction coil.
In an alternative embodiment, the bracket is formed in a cylindrical shape, and a positioning portion for connecting the bracket to a shaft of a bicycle is provided inside the bracket.
In a second aspect, an embodiment of the present invention provides an electric power-assisted bicycle, which includes a control system, a motor and the tower footing of any one of the foregoing embodiments, wherein the speed sensing element and the motor are electrically connected to the control system, and the control system is configured to control the operation state of the motor according to the speed signal sensed by the speed sensing element.
In an alternative embodiment, the electric bicycle further comprises a torque sensing device electrically connected to the control system, and the control system is configured to control the operation state of the motor according to the speed signal sensed by the speed sensing element and the torque signal sensed by the torque sensing device.
The embodiment of the utility model provides a can reach following beneficial effect:
the utility model provides a tower footing, which comprises a tower footing body, a tower footing shell, a bracket and a stepping speed sensor; the tower footing body is arranged inside the tower footing shell in a penetrating way; one end of the tower footing body is fixedly connected with one end of the tower footing outer shell, the other end of the tower footing body is rotatably connected with the other end of the tower footing outer shell, and a one-way rotating structure is arranged at the other end of the tower footing body; the support and the tower foundation body are arranged in a split manner, and the tower foundation body can rotate relative to the support; the stepping speed sensor comprises a ferromagnetic component and a speed sensing element; the ferromagnetic part is fixedly connected to the tower footing body, the speed sensing element is installed on the support and corresponds to the ferromagnetic part, and the speed sensing element is configured to sense the rotating speed of the ferromagnetic part.
The ferromagnetic component can be fixedly connected to the inner side wall of the tower footing body and also can be fixedly connected to the end face of one end of the tower footing body; when the ferromagnetic component is fixedly connected to the inner side wall of the tower foundation body, the support can extend into the tower foundation body so that the ferromagnetic component and the speed sensing element correspond to each other. The stepping speed sensor comprises a ferromagnetic part and a speed sensing element, and if the ferromagnetic part is a magnetic ring, a plurality of N/S magnetic poles are distributed on the surface of the magnetic ring; if the ferromagnetic member is a plurality of small magnets, a body of iron material, or a ferromagnetic member having a plurality of convexities, the speed sensing element senses the speed by the amount of change in magnetic flux when the ferromagnetic member rotates.
When the tower footing provided by the embodiment is used, firstly, the tower footing shell is connected with the flywheel, the other end of the tower footing body is assembled on a rear hub or a rear-drive hub motor shell of a common bicycle or an electric power-assisted bicycle, the unidirectional rotation structure is used as a clutch structure of the tower footing, and meanwhile, the whole tower footing body is connected with a shaft rod of a rear wheel of the bicycle or a shaft rod of a rear-drive hub motor through a bearing. Compare in five-way departments with the assembly of step on flat speedtransmitter in prior art, the flat speedtransmitter is stepped on in this embodiment integration on the column foot body, and its assembly process is simpler, steps on flat speedtransmitter safe and reliable, and will step on flat speedtransmitter and integrate in electric bicycle's column foot body, step on flat speedtransmitter's signal line can be qualified for the next round of competitions with electric bicycle's motor line together, makes the whole car of electric bicycle pleasing to the eye.
In this embodiment, one end of the column foundation body is fixedly connected to one end of the column foundation shell, and the other end of the column foundation body is rotatably connected to the other end of the column foundation shell; thereby, can make synchronous rotation between tower footing body and the tower footing shell, avoid tower footing body to rotate but the tower footing shell does not rotate in the tower footing body relative to tower footing shell unidirectional rotating, and then make the speed of stepping on flat speedtransmitter reflection and the inconsistent problem of pedal speed, in order to guarantee the utility model provides a step on flat speedtransmitter accuracy transmission pedal speed in the tower footing.
Wherein, when being applied to electric power assisted bicycle with the tower footing that this embodiment provided, because this embodiment will step on flat speed sensor integration in the tower footing to, can carry out sensitive control to the rotational speed of tower footing body, at this moment, still can further be connected or signal connection with the controller electricity of speed sensing element in the tower footing and electric power assisted bicycle's motor to make electric power assisted bicycle's motor open according to the corresponding speed adjustment of speed sensing element and stop state and output, and then increase the stationarity and the security of riding.
Additionally, the utility model discloses the second aspect of the embodiment still provides an electric bicycle, and this electric bicycle includes control system, motor and aforementioned column foot, and speed sensing element and motor all are connected with the control system electricity, and control system configures to the running state that can control the motor according to the speed signal that speed sensing element sensed. The "operating state of the motor" includes, but is not limited to, start/stop operation of the motor, output power of the motor, and the like. Because the embodiment of the utility model provides an electric power-assisted bicycle includes aforementioned column foot, therefore, the embodiment of the utility model provides a can reach all beneficial effects that aforementioned column foot can reach.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a tower footing provided in an embodiment of the present invention;
fig. 2 is an exploded schematic view of an overall structure of a tower footing according to an embodiment of the present invention;
fig. 3 is a front sectional view of a tower footing provided by an embodiment of the present invention;
fig. 4 is a schematic view of an overall structure of a tower base body in a tower base provided by an embodiment of the present invention;
fig. 5 is a schematic view of an overall structure of a tower footing shell in a tower footing according to an embodiment of the present invention;
fig. 6 is a schematic view of an overall structure of a support in a tower footing according to an embodiment of the present invention;
fig. 7 is a schematic view of an installation structure of a tower footing provided by the embodiment of the present invention installed on a bicycle axle rod;
fig. 8 is an exploded view of a mounting structure of a tower footing on a bicycle axle stick according to an embodiment of the present invention;
fig. 9 is a control schematic block diagram of an alternative embodiment of an electric power-assisted bicycle according to an embodiment of the present invention;
fig. 10 is a control schematic block diagram of another alternative embodiment of the electric bicycle according to the embodiment of the present invention.
Icon: 100-a tower footing; 1-a foundation body; 101-relatively rotating parts; 102-a moment induction deformation part; 1021-torsion induced soft magnetic deformation unit; 103-load connection; 1031-ball groove; 111-pawl slot; 2-a foundation shell; 3-a tread flat speed sensor; 31-a ferromagnetic component; 32-a speed sensing element; 4-unidirectional rotation structure; 41-pawl; 42-an elastic member; 421-wire spring groove; 5-spline; 6-rolling balls; 7-a scaffold; 701-a first positioning groove; 702-a second detent; 703-a third positioning groove; 704-wire outlet holes; 71-a positioning portion; 8-a torque sensing device; 81-a torque signal processor; 82-an induction coil; 9-end bearings; 10-a tower footing locking frame; 11-an electromagnetic shielding component; 12-a signal output line; 200-axis stick; 300-a control system; 400-motor; 500-flywheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example one
The present embodiment provides a foundation 100, and referring to fig. 1 to 3, and fig. 7 and 8, the foundation 100 includes a foundation body 1, a foundation shell 2, a bracket 7, and a tread speed sensor 3.
Specifically, the tower footing body 1 is arranged inside the tower footing outer shell 2 in a penetrating way; one end of the tower footing body 1 is fixedly connected with one end of the tower footing outer shell 2, the other end of the tower footing body 1 is rotatably connected with the other end of the tower footing outer shell 2, and a one-way rotating structure 4 is installed at the other end of the tower footing body 1. The support 7 and the tower footing body 1 are arranged in a split mode, and the tower footing body 1 can rotate relative to the support 7; the stepping speed sensor 3 includes a ferromagnetic member 31 and a speed sensing element 32. The ferromagnetic member 31 is fixedly connected to the tower base body 1, the speed sensing element 32 is attached to the bracket 7, the speed sensing element 32 and the ferromagnetic member 31 correspond to each other, and the speed sensing element 32 is disposed so as to sense the rotational speed of the ferromagnetic member 31.
The ferromagnetic component 31 may be fixedly connected to the inner sidewall of the foundation body 1, or may be fixedly connected to the end surface of one end of the foundation body 1; when the ferromagnetic member 31 is fixedly connected to the inner sidewall of the tower foundation body 1, the support 7 may be inserted into the tower foundation body 1 so that the ferromagnetic member 31 and the speed sensing element 32 correspond to each other, and when the ferromagnetic member 31 is fixedly connected to the end surface of one end of the tower foundation body 1, a flange may be provided at one end of the support 7, and the speed sensing element 32 is fixed to a side surface of the flange facing the tower foundation body 1 so that the ferromagnetic member 31 and the speed sensing element 32 correspond to each other. The stepping speed sensor 3 comprises a ferromagnetic part 31 and a speed sensing element 32, and if the ferromagnetic part 31 is a magnetic ring, a plurality of N/S magnetic poles are distributed on the surface of the magnetic ring; if the ferromagnetic member 31 is a plurality of small magnets, a body of iron material, or a ferromagnetic member having a plurality of convexities, the speed sensing element 32 senses the speed by the amount of change in magnetic flux when the ferromagnetic member 31 rotates.
When the bicycle tower footing is used for the tower footing 100 provided by the embodiment, firstly, the tower footing shell 2 is connected with the flywheel 500, the other end of the tower footing body 1 is assembled on a rear hub or a rear-drive hub motor shell of a common bicycle or an electric power-assisted bicycle, the unidirectional rotating structure 4 is used as a clutch structure of the tower footing 100, and meanwhile, the whole tower footing body 1 is connected with a shaft rod of a rear wheel of the bicycle or a shaft rod of the rear-drive hub motor through a bearing. Compare in five-way departments with step on flat velocity sensor 3 assembly in prior art, this embodiment is integrated on column foot body 1 and is stepped on flat velocity sensor 3, and its assembling process is simpler, steps on flat velocity sensor 3 safe and reliable, and will step on flat velocity sensor 3 and integrate in electric bicycle's column foot body 1 time, step on flat velocity sensor 3's signal line and can be qualified for the next round of competitions with electric bicycle's motor line together, makes electric bicycle whole car pleasing to the eye.
In this embodiment, one end of the foundation body 1 is fixedly connected to one end of the foundation shell 2, and the other end of the foundation body 1 is rotatably connected to the other end of the foundation shell 2; thereby, can make synchronous rotation between tower footing body 1 and the tower footing shell 2, avoid tower footing body 1 relative tower footing shell 2 unidirectional rotation to appear tower footing body 1 and rotate but tower footing shell 2 does not rotate, and then make the speed of stepping on flat velocity transducer 3 reflection and the inconsistent problem of pedal speed, in order to guarantee the utility model provides a step on flat velocity transducer 3 accurate transmission pedal speed in the tower footing 100.
When the tower footing 100 provided by the embodiment is applied to the electric power-assisted bicycle, the stepping speed sensor 3 is integrated in the tower footing 100 according to the embodiment, so that the rotating speed of the tower footing body 1 can be sensitively monitored, and at the moment, the speed sensing element 32 in the tower footing 100 can be further electrically connected or in signal connection with a controller of a motor of the electric power-assisted bicycle, so that the motor of the electric power-assisted bicycle can be adjusted to start and stop states and output power according to the corresponding speed of the speed sensing element 32, and the riding stability and safety can be further improved.
Further, referring to fig. 4 and 5, in at least one alternative embodiment of the present embodiment, one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 through the spline 5, wherein "one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 through the spline 5" merely provides a specific connection manner in which one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 in the present embodiment, and is not limited thereto, for example, the tower foundation body 1 may also be fixedly connected with the tower foundation shell 2 through screws, and the like.
In addition, referring to fig. 2 and 3, in at least one alternative embodiment of the present embodiment, balls 6 are provided between the other end of the foundation main body 1 and the other end of the foundation housing 2, and specifically, referring to fig. 4, a ball groove 1031 is provided on the outer peripheral surface of the other end of the foundation main body 1, the balls 6 are provided inside the ball groove 1031, and the inner peripheral surface of the other end of the foundation housing 2 is in contact with the balls 6.
In addition, referring to fig. 2 and 3, in at least one alternative embodiment of the present embodiment, the unidirectional rotation structure 4 includes a pawl 41 and an elastic member 42; referring to fig. 4, with reference to fig. 2 and 3, a pawl groove 111 is formed in the outer peripheral surface of the other end of the tower base body 1, and the pawl 41 is fixed inside the pawl groove 111 by an elastic member 42. Wherein, the elastic member 42 includes but not limited to a wire spring, the wire spring is sleeved outside the pawl 41 to press the pawl 41, in order to avoid the wire spring from loosening, preferably, a wire spring groove 421 is provided on the outer peripheral surfaces of the tower foundation body 1 and the pawl 41, and the wire spring is sleeved inside the wire spring groove 421. Of course, the elastic member 42 may be a spring body having one end connected to the pawl 41 and the other end connected to the groove wall surface of the pawl groove 111 of the tower base body 1. Or, the unidirectional rotating structure 4 may also include a unidirectional bearing, and the unidirectional bearing is sleeved outside the other end of the tower footing body 1.
Additionally, referring to fig. 1-8 in combination with fig. 9 and 10, in at least one alternative embodiment of this embodiment, the tower foundation 100 further includes a torque sensing device 8; the torque sensing device 8 includes a torque signal processor 81 and a sensing portion; referring to fig. 4, the tower foundation body 1 includes a relatively rotating portion 101, a moment induction deformation portion 102, and a load connecting portion 103, and the relatively rotating portion 101, the moment induction deformation portion 102, and the load connecting portion 103 are connected in order from one end of the tower foundation body 1 to the other end of the tower foundation body 1. The sensing part is arranged on the moment sensing deformation part 102 and is used for sensing the torque of the moment sensing deformation part 102; the torque signal processor 81 is mounted on the bracket 7, the torque signal processor 81 is connected to the sensing portion by an electric wire or by a signal, the torque signal processor 81 is configured to receive and output a torque signal sensed by the sensing portion, and in conjunction with fig. 2, the torque signal processor 81 is connected to the signal output line 12.
In the optional embodiment, the torque sensing device 8 is integrated into the tower footing 100, so that the requirement of torque riding comfort can be met, and in addition, the good simplicity and attractiveness of the whole vehicle can be ensured; further, in the present alternative embodiment, the sensing part has various arrangement forms:
for example, referring to fig. 3, as an alternative structure form of the induction part, the induction part includes a torsion induction soft magnetic deformation unit 1021 and an induction coil 82; the torque-sensitive soft magnetic deformation unit 1021 is arranged on the inner peripheral surface of the torque-sensitive deformation part 102; the bracket 7 is arranged in the tower base body 1 in a penetrating way, the induction coil 82 is arranged in the bracket 7, and the position of the induction coil 82 corresponds to the position of the torsion induction soft magnetic deformation unit 1021; the torque signal processor 81 is mounted to the support 7, and the torque signal processor 81 is electrically connected to the induction coil 82.
When the device is used, the flywheel 500 applies torque to the tower footing outer shell 2 through the transmission body by pedaling action, the tower footing outer shell 2 transmits the torque to the relative rotation part 101, and then the torque is applied to the load connection part 103 through the torque induction deformation part 102, in the process, the torque induction deformation part 102 generates deformation corresponding to the torque, so that the torque induction soft magnetic deformation unit 1021 arranged on the inner peripheral surface of the torque induction deformation part 102 also generates corresponding circumferential deformation, at the moment, the relative area of the induction coil 82 and the torque induction soft magnetic deformation unit 1021 also changes, so that the magnetic field of the induction coil 82 changes, the induced electromotive force of the induction coil 82 changes, and the torque signal processor 81 takes out the electric signal of the induction coil 82, which is caused to change by the circumferential torque, namely the torque signal corresponding to the circumferential force. In particular, in the above optional structure as the sensing portion, the soft magnetic material may be an iron-silicon alloy or a soft magnetic ferrite, and the torsion sensing soft magnetic deformation unit 1021 may be disposed in various manners, for example, but not limited to, the torsion sensing soft magnetic deformation unit 1021 is integrally formed with the moment sensing deformation portion 102, or the torsion sensing soft magnetic deformation unit 1021 is attached to the inner circumferential surface of the moment sensing deformation portion 102 by an attaching process, and the like, wherein the integrally formed manner includes but not limited to fusion casting, coating, electrostatic powder coating, fluidized bed powder coating, electroplating, electroless plating, dacromet treatment, and the like; the bonding process mainly refers to bonding through bonding glue.
For another example, as another alternative structure form of the sensing part, the sensing part includes a strain sensor, a first sensing coil and a second sensing coil. The strain sensor is fixed on the moment induction deformation part 102 and used for sensing the torque of the moment induction deformation part 102, and the first induction coil is fixed on the tower footing body 1 and is connected with the strain sensor circuit; the second induction coil and the torque signal processor 81 are both mounted on the support 7, the second induction coil is in circuit connection with the torque signal processor 81, and the position of the second induction coil corresponds to the position of the first induction coil. Wherein, when first induction coil fixed connection in the inside wall of column foot body 1, then support 7 can stretch into the inside of column foot body 1 so that first induction coil's position and second induction coil's position correspond to each other, on the terminal surface of first induction coil fixed connection in the one end of column foot body 1, can set up the flange in the one end of support 7, the second induction coil is fixed in on the side of this flange towards one side of column foot body 1 to make first induction coil's position and second induction coil's position correspond to each other.
When the tower foundation type wind power generation device is used, the flywheel 500 applies torsion to the tower foundation shell 2 through the transmission body by pedaling action, the tower foundation shell 2 transmits the torsion to the opposite rotating part 101, and then the torsion is applied to the load connecting part 103 through the torque induction deformation part 102; then, wireless signal transmission is performed between the second induction coil and the first induction coil, or the torque of the strain sensor induced torque induction deformation portion 102 is transmitted between the circuit connected between the first induction coil and the strain sensor and the torque signal processor 81 through the infrared element, in the above two transmission modes, the torque signal processor 81 provides electric energy for the circuit connected between the first induction coil and the strain sensor through the second induction coil and the first induction coil.
Referring to fig. 6, in the present embodiment, the bracket 7 may be formed in a cylindrical shape, and the positioning portion 71 may be provided inside the bracket 7, the positioning portion 71 may be used to connect the bracket 7 to the axle rod 200, and the axle rod 200 may be an axle rod of a rear wheel of a bicycle or an axle rod of a rear-drive hub motor; preferably, with reference to fig. 6, the bracket 7 may be provided with an outlet 704 through which the signal output line 12 passes, and further, with reference to fig. 2, the bracket 7 is further provided with a first positioning groove 701, a second positioning groove 702, and a third positioning groove 703 on its outer circumferential surface; the first positioning groove 701 is used for installing the speed sensing element 32, the second positioning groove 702 is used for installing the torque signal processor 81, and the third positioning groove 703 is used for installing the induction coil 82, so as to ensure the stability of signal transmission, the speed sensing element 32 and the torque signal processor 81 can be integrated on the same signal processing board, and the signal output line 12 is connected to the signal processing board.
In the above optional embodiment in which the tower foundation 100 further includes the torque sensing device 8, further optionally, referring to fig. 2, the tower foundation 100 further includes an electromagnetic shielding component 11, where the electromagnetic shielding component 11 is installed inside the tower foundation body 1, and is used for shielding electromagnetic interference of the external induction coil 82 and reducing metal eddy current loss of metal around the induction coil 82; specifically, the electromagnetic shielding member 11 may be installed inside the induction coil 82; alternatively, a part of the electromagnetic shielding member 11 is positioned inside the induction coil 82, and an end portion of one end of the electromagnetic shielding member 11 is extended to the outside of the induction coil 82 and covers an end surface of one end of the induction coil 82; alternatively, a part of the electromagnetic shielding member 11 is positioned inside the induction coil 82, and end portions of both ends of the electromagnetic shielding member 11 are extended to the outside of the induction coil 82 and cover end surfaces of both ends of the induction coil 82; alternatively, the electromagnetic shield member 11 is mounted inside the tower base body 1 in another form.
In addition, referring to fig. 2, the tower footing 100 further includes an end bearing 9 and a tower footing locking frame 10, the tower footing locking frame 10 is connected to one end of the tower footing body 1 for fixing the tower footing outer shell 2, and the end bearing 9 is used for connecting the tower footing body 1 to the shaft rod 200.
Example two
The present embodiment provides an electric power assisted bicycle, which includes a control system 300, a motor 400, and a tower footing 100, with reference to fig. 9 and fig. 1 to 8.
Specifically, the foundation 100 includes a foundation body 1, a foundation shell 2, a bracket 7, and a stepping speed sensor 3. The tower footing body 1 is arranged inside the tower footing shell 2 in a penetrating way; one end of the tower footing body 1 is fixedly connected with one end of the tower footing outer shell 2, the other end of the tower footing body 1 is rotatably connected with the other end of the tower footing outer shell 2, and a one-way rotating structure 4 is installed at the other end of the tower footing body 1. The support 7 and the tower footing body 1 are arranged in a split mode, and the tower footing body 1 can rotate relative to the support 7; the stepping speed sensor 3 includes a ferromagnetic member 31 and a speed sensing element 32. The ferromagnetic member 31 is fixedly connected to the tower base body 1, the speed sensing element 32 is attached to the bracket 7, the ferromagnetic member 31 and the speed sensing element 32 correspond to each other, and the speed sensing element 32 is disposed so as to sense the rotational speed of the ferromagnetic member 31.
The ferromagnetic component 31 may be fixedly connected to the inner sidewall of the foundation body 1, or may be fixedly connected to the end surface of one end of the foundation body 1; when the ferromagnetic member 31 is fixedly connected to the inner sidewall of the tower foundation body 1, the support 7 may be inserted into the tower foundation body 1 so that the ferromagnetic member 31 and the speed sensing element 32 correspond to each other, and when the ferromagnetic member 31 is fixedly connected to the end surface of one end of the tower foundation body 1, a flange may be provided at one end of the support 7, and the speed sensing element 32 is fixed to a side surface of the flange facing the tower foundation body 1 so that the ferromagnetic member 31 and the speed sensing element 32 correspond to each other. The stepping speed sensor 3 comprises a ferromagnetic part 31 and a speed sensing element 32, and if the ferromagnetic part 31 is a magnetic ring, a plurality of N/S magnetic poles are distributed on the surface of the magnetic ring; if the ferromagnetic member 31 is a plurality of small magnets, a body of iron material, or a ferromagnetic member having a plurality of convexities, the speed sensing element 32 senses the speed by the amount of change in magnetic flux when the ferromagnetic member 31 rotates.
The speed sensing element 32 and the motor 400 are electrically connected to the control system 300, and the control system 300 is configured to control an operation state of the motor 400 according to the speed signal sensed by the speed sensing element 32, wherein the "operation state of the motor 400" includes, but is not limited to, a start-stop action of the motor 400, an output power of the motor 400, and the like.
In more detail, the motor mounting positions are mainly divided into two types, one type is a middle type, namely, the motor is mounted at the middle position of the vehicle body, namely the motor at the five-way position, and the motor is called as a middle type motor; the middle motor is connected with the frame and is connected with the rear wheel through the chain to transmit power, meanwhile, pedals are arranged on two sides of the motor, a rider can ride the bicycle manually through the pedals under the condition that the motor does not have a power supply, and the resistance is not greatly different from that of a normal bicycle; the other type is installed in a hub of an electric power-assisted bicycle, and is called a hub motor.
The embodiment integrates the stepping speed sensor 3 into the tower footing 100, thereby sensitively monitoring the rotating speed of the tower footing body 1, electrically connecting the motor 400 and the speed sensing element 32 of the stepping speed sensor 3 in the tower footing 100 with the control system 300, and configuring the control system 300 to control the running state of the motor 400 according to the speed signal sensed by the speed sensing element 32, and further, compared with a common electric power-assisted bicycle, greatly increasing the riding stability and safety.
Further, referring to fig. 4 and 5, in at least one alternative embodiment of the present embodiment, one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 through the spline 5, wherein "one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 through the spline 5" merely provides a specific connection manner in which one end of the tower foundation body 1 is fixedly connected with one end of the tower foundation shell 2 in the present embodiment, and is not limited thereto, for example, the tower foundation body 1 may also be fixedly connected with the tower foundation shell 2 through screws, and the like.
In addition, referring to fig. 2 and 3, in at least one alternative embodiment of the present embodiment, balls 6 are provided between the other end of the foundation main body 1 and the other end of the foundation housing 2, and specifically, referring to fig. 4, a ball groove 1031 is provided on the outer peripheral surface of the other end of the foundation main body 1, the balls 6 are provided inside the ball groove 1031, and the inner peripheral surface of the other end of the foundation housing 2 is in contact with the balls 6.
In addition, referring to fig. 2 and 3, in at least one alternative embodiment of the present embodiment, the unidirectional rotation structure 4 includes a pawl 41 and an elastic member 42; referring to fig. 4, with reference to fig. 2 and 3, a pawl groove 111 is formed in the outer peripheral surface of the other end of the tower base body 1, and the pawl 41 is fixed inside the pawl groove 111 by an elastic member 42. The elastic member 42 includes, but is not limited to, a wire spring sleeved outside the pawl 41 to press the pawl 41; in order to prevent the wire spring from loosening, it is preferable that a wire spring groove 421 is formed on the outer peripheral surfaces of the foundation body 1 and the pawl 41, and the wire spring is fitted in the wire spring groove 421. Of course, the elastic member 42 may be a spring body having one end connected to the pawl 41 and the other end connected to the groove wall surface of the pawl groove 111 of the tower base body 1. Or, the unidirectional rotating structure 4 may also include a unidirectional bearing, and the unidirectional bearing is sleeved outside the other end of the tower footing body 1.
In addition, referring to fig. 10, in at least one alternative embodiment of the present embodiment, the electric bicycle further includes a torque sensing device 8, the torque sensing device 8 is electrically connected to the control system 300, and the control system 300 is configured to control the operation state of the motor 400 according to the speed signal sensed by the speed sensing element 32 and the torque signal sensed by the torque sensing device 8. The torque sensing device 8 includes, but is not limited to, a common torque sensor installed on a bicycle center shaft, and the like, so that when the torque sensing device 8 outputs an error signal, the control system 300 judges whether to change the running state of the motor 400 or not by combining the received signal of the speed sensing element 32, thereby avoiding the phenomenon of 'runaway' caused by a fault of the torque sensing device 8, and improving the riding safety, specifically, for example, in a normal state, the torque sensing device 8 transmits a torque starting value capable of starting the motor 400 to the control system 300, the speed sensing element 32 transmits a speed starting value capable of starting the motor 400 to the control system 300, and the motor 400 is started to assist riding only when the torque starting value and the speed starting value both reach a specified value or more; however, if the control system 300 is started only by the torque starting value, if the motor 400 is not needed to be started, but the torque sensing device 8 fails to transmit a torque signal equal to or greater than the torque starting value to the control system 300 by mistake, and at this time, the motor 400 is started, a phenomenon of "runaway" occurs, and in this embodiment, the control system 300 is started by the speed starting value, if the torque sensing device 8 fails to transmit a torque signal equal to or greater than the torque starting value to the control system 300 by mistake, but the speed value does not reach a predetermined value, for example, 3km/h, the motor 400 is not started, and the phenomenon of "runaway" is avoided. Obviously, the electric power-assisted bicycle provided by the embodiment is safer to use.
Specifically, referring to fig. 10, in conjunction with fig. 1 to 4, the torque sensing device 8 includes a torque signal processor 81 and a sensing portion; referring to fig. 4, the tower foundation body 1 includes a relatively rotating portion 101, a moment induction deformation portion 102, and a load connecting portion 103, and the relatively rotating portion 101, the moment induction deformation portion 102, and the load connecting portion 103 are connected in order from one end of the tower foundation body 1 to the other end of the tower foundation body 1. The sensing part is arranged on the moment sensing deformation part 102 and is used for sensing the torque of the moment sensing deformation part 102; the torque signal processor 81 is mounted on the bracket 7, the torque signal processor 81 is connected to the sensing portion by an electric wire or by a signal, the torque signal processor 81 is configured to receive and output a torque signal sensed by the sensing portion, and in conjunction with fig. 2, the torque signal processor 81 is connected to the signal output line 12. The signal output line 12 of the torque signal processor 81 is connected to the control system 300. A more specific structure of the torque sensor device 8 can be obtained with reference to the first embodiment. Therefore, the stepping speed sensor 3 is integrated in the tower footing 100, so that the rotating speed of the tower footing body 1 can be sensitively monitored, and the riding stability and safety are further improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A tower footing (100) is characterized by comprising a tower footing body (1), a tower footing shell (2), a bracket (7) and a stepping speed sensor (3);
the tower footing body (1) is arranged in the tower footing outer shell (2) in a penetrating way; one end of the tower foundation body (1) is fixedly connected with one end of the tower foundation shell (2), the other end of the tower foundation body (1) is rotatably connected with the other end of the tower foundation shell (2), and a one-way rotating structure (4) is arranged at the other end of the tower foundation body (1);
the support (7) and the tower foundation body (1) are arranged in a split mode, and the tower foundation body (1) can rotate relative to the support (7);
the stepping speed sensor (3) comprises a ferromagnetic member (31) and a speed sensing element (32);
the ferromagnetic component (31) is fixedly connected to the tower footing body (1), the speed sensing element (32) is mounted on the bracket (7), the speed sensing element (32) and the ferromagnetic component (31) correspond to each other, and the speed sensing element (32) is configured to sense the rotating speed of the ferromagnetic component (31).
2. The tower foundation (100) of claim 1, wherein one end of the tower foundation body (1) is fixedly connected with one end of the tower foundation shell (2) by a spline (5).
3. The foundation (100) according to claim 1, wherein a ball (6) is arranged between the other end of the foundation body (1) and the other end of the foundation shell (2).
4. The tower foundation (100) according to claim 1, wherein said unidirectional rotation structure (4) comprises a pawl (41) and an elastic member (42); a pawl groove (111) is formed in the outer peripheral surface of the other end of the tower footing body (1), and the pawl (41) is fixed inside the pawl groove (111) through the elastic piece (42);
or the unidirectional rotating structure (4) comprises a unidirectional bearing, and the unidirectional bearing is sleeved outside the other end of the tower footing body (1).
5. The tower foundation (100) of claim 1, wherein the tower foundation (100) further comprises a torque sensing device (8); the torque sensing device (8) comprises a torque signal processor (81) and a sensing part;
the tower foundation body (1) comprises a relative rotating part (101), a moment induction deformation part (102) and a load connecting part (103), wherein the relative rotating part (101), the moment induction deformation part (102) and the load connecting part (103) are sequentially connected from one end of the tower foundation body (1) to the other end of the tower foundation body (1);
the sensing part is arranged on the moment sensing deformation part (102) and is used for sensing the torque of the moment sensing deformation part (102); the torque signal processor (81) is installed on the support (7), the torque signal processor (81) is in electric wire connection or signal connection with the sensing part, and the torque signal processor (81) is used for receiving and outputting a torque signal sensed by the sensing part.
6. The tower foundation (100) of claim 5, wherein the induction portion comprises a torsion induced soft magnetic deformation unit (1021) and an induction coil (82);
the torque induction soft magnetic deformation unit (1021) is arranged on the inner peripheral surface of the torque induction deformation part (102);
the bracket (7) is arranged in the tower footing body (1) in a penetrating mode, the induction coil (82) is arranged on the bracket (7), and the position of the induction coil (82) corresponds to the position of the torsion induction soft magnetic deformation unit (1021); the torque signal processor (81) is mounted on the bracket (7), and the torque signal processor (81) is electrically connected with the induction coil (82).
7. The tower foundation (100) of claim 5, wherein the induction portion comprises a strain sensor, a first induction coil and a second induction coil;
the strain sensor is fixed on the moment induction deformation part (102) and used for sensing the torque of the moment induction deformation part (102), the first induction coil is fixed on the tower footing body (1) and is connected with the strain sensor circuit;
the second induction coil and the torque signal processor (81) are installed on the support (7), the second induction coil is in circuit connection with the torque signal processor (81), and the position of the second induction coil corresponds to the position of the first induction coil.
8. The tower foundation (100) according to claim 1 or 6, wherein the bracket (7) is formed in a cylindrical shape, and a positioning portion (71) is provided inside the bracket (7), and the positioning portion (71) is used for connecting the bracket (7) to a shaft stick (200) of a bicycle.
9. An electrically assisted bicycle, characterized in that the electrically assisted bicycle comprises a control system (300), an electric motor (400) and the tower base (100) of any one of claims 1-3, the speed sensing element (32) and the electric motor (400) are both electrically connected to the control system (300), and the control system (300) is configured to control the operating state of the electric motor (400) in accordance with a speed signal sensed by the speed sensing element (32).
10. The electrically assisted bicycle according to claim 9, further comprising a torque sensing device (8), wherein the torque sensing device (8) is electrically connected to the control system, and wherein the control system (300) is configured to control the operation state of the motor (400) according to the speed signal sensed by the speed sensing element (32) and the torque signal sensed by the torque sensing device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484347.9U CN211391588U (en) | 2019-12-31 | 2019-12-31 | Tower footing and electric power-assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484347.9U CN211391588U (en) | 2019-12-31 | 2019-12-31 | Tower footing and electric power-assisted bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN211391588U true CN211391588U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922484347.9U Active CN211391588U (en) | 2019-12-31 | 2019-12-31 | Tower footing and electric power-assisted bicycle |
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| Country | Link |
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| CN (1) | CN211391588U (en) |
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Address after: 215400 28 hengsi Road, Chengxiang Town, Taicang City, Suzhou City, Jiangsu Province Patentee after: Suzhou moteng Electronic Technology Co.,Ltd. Address before: 215000 international student entrepreneurship Park, No. 6, Beijing West Road, Taicang City, Suzhou City, Jiangsu Province Patentee before: KCLAMBER ELECTRIC TECHNOLOGY Corp. |