CN110182296B - Bicycle center shaft torque detection device - Google Patents
Bicycle center shaft torque detection device Download PDFInfo
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- CN110182296B CN110182296B CN201910576959.2A CN201910576959A CN110182296B CN 110182296 B CN110182296 B CN 110182296B CN 201910576959 A CN201910576959 A CN 201910576959A CN 110182296 B CN110182296 B CN 110182296B
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- bicycle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
Abstract
The invention discloses a bicycle center shaft torque detection device, which comprises a center shaft body and a dismounting assembly, wherein the center shaft body is arranged in a bicycle five-way pipe in a penetrating manner, and the dismounting assembly is sleeved at one end of the center shaft body; the invention can accurately detect data such as torque and the like when the bicycle moves forwards, and the dismounting assembly is sleeved at one end of the middle shaft body, so that the middle shaft of the bicycle does not need to be dismounted during dismounting, and the convenience of dismounting is improved; the invention has reasonable structure, convenient assembly and disassembly and higher use value and popularization value.
Description
Technical Field
The invention relates to the field of bicycle accessories, in particular to a bicycle center shaft torque detection device.
Background
In order to detect the middle shaft torque when the electric moped or the bicycle moves forwards, middle shaft torque sensing devices are often arranged on some bicycles. There are also various ways to extract the torque signal from the bicycle bottom bracket torque sensor, for example: inductance type, slip ring formula, photoelectric type, also there are two hall switches to draw forth and detect the phase difference type of phase difference between the two, these schemes all have respective advantage, but moment sensing device ubiquitous structure is complicated among the current bicycle, bulky, poor stability scheduling shortcoming, simultaneously, the connecting cable of current sensor need penetrate the frame five-way and draw forth from frame seat pipe, lead to the cable to damage easily, and whole sensor need follow the bicycle when installation or dismantlement and pull down whole axis, be not convenient for later repair and maintenance.
Disclosure of Invention
In view of the deficiencies in the prior art, the present invention is directed to solving, at least in part, one of the problems in the related art. Therefore, the invention aims to provide a bicycle bottom bracket bearing moment detection device which is reasonable in structure and more convenient to mount and dismount. The specific technical scheme is as follows:
a bicycle center shaft moment detection device comprises a center shaft body penetrating through a bicycle five-way pipe and a dismounting assembly sleeved at one end of the center shaft body; the mounting sleeve is provided with stepped holes which are arranged along the axial direction of the mounting sleeve and penetrate through two ends of the mounting sleeve; the stepped hole comprises a large-diameter section, a middle-diameter section and a small-diameter section; the large-diameter section and the small-diameter section respectively penetrate through two ends of the mounting sleeve; the middle diameter section is internally provided with a detection ring which is coaxial with the mounting sleeve, the inner wall of the detection ring is provided with abutting parts which are arranged around the inner wall of the detection ring, and after one end of the middle shaft body is inserted into the mounting sleeve from the small diameter section, each abutting part can abut against the outer peripheral surface of the middle shaft body; the outer peripheral surface of the small-diameter section corresponding to the mounting sleeve is provided with a connecting thread matched with the five-way pipe of the frame; and a detection mechanism for detecting the rotation torque of the middle shaft body is also arranged in the large-diameter section.
In the technical scheme: the dismounting component is sleeved at one end of the middle shaft body, so that the dismounting and mounting of a user are facilitated; the whole middle shaft does not need to be dismounted from the bicycle during dismounting; when installed. The mounting sleeve of the dismounting assembly is sleeved at one end of the middle shaft body through a stepped hole, the mounting sleeve is connected to one end of the workshop five-way pipe through connecting threads after the middle shaft body penetrates through the stepped hole, and the connecting cable is located on the outer side of the frame five-way pipe and does not need to be led out from the middle position of the middle shaft body, so that the damage of the connecting cable is avoided; when the bicycle middle shaft body is disassembled, the mounting sleeve can be taken down from one end of the middle shaft body, and the middle shaft body does not need to be disassembled from the bicycle; when detecting, be located the measuring ring of middle diameter section and can overlap on the axis body and rotate along with the axis body to utilize detection mechanism to detect the pivoted moment isoparametric of axis body.
The preferable technical scheme, its additional technical characteristics, detection mechanism is including the detection circuitry board that fits in large diameter section diapire, detection circuitry board and detection ring relative be equipped with a pair of hall response spare on the surface, detection ring surface is equipped with a plurality of magnetite with hall response spare mutual disposition, and each magnetite encircles the axis body and arranges, detection circuitry board still is connected with axial strain gauge and radial strain gauge, the outer peripheral face of installation cover is located to the axial strain gauge, radial strain gauge sets up the large diameter section diapire at the installation cover.
When the bicycle moves ahead, the moment detection assembly can accurately detect the treading frequency and the moment data of the rotation of the middle shaft body. Each magnet on the detection ring uses axis body axis as the centre of a circle rotation, and at the rotation in-process, each magnet rotation is sensed to the hall response piece on the circuit detection board utilization hall effect, and hall response piece rotates and steps on the signal frequently when the processing through detection circuit board obtains the bicycle and moves ahead through each magnet of response. When the pedal bicycle pedal drives the bicycle to move forward, the mounting sleeve can generate stress, and the axial strain gauge and the radial strain gauge mounted on the mounting sleeve can detect strain data of the mounting sleeve.
The preferable technical scheme is characterized in that the end face of the detection ring is provided with a plurality of mounting grooves which are arranged around the geometric center of the detection ring, and each magnet is embedded in the corresponding mounting groove.
Thus, each magnet can be stably installed in the corresponding installation groove.
The technical scheme is preferably characterized in that a fixing cover is embedded in the large-diameter section, a fixing boss for fixing the detection circuit board is arranged on the inner surface of the fixing cover, and a positioning convex column clamped with the edge of the detection circuit board is arranged on the fixing boss.
Like this, fixed lid can be with detection circuit board stable fixation prevent fixed lid skew or slip on the diapire of large diameter section, improve the stability of detection circuit board installation.
The preferable technical scheme is characterized in that a plurality of clamping protrusions clamped with the side wall of the large-diameter section are arranged at the edge of the fixed cover, and the clamping protrusions are uniformly arranged at intervals.
Like this, fixed lid accessible card is protruding to be stably fixed in the major diameter section, convenient dismantlement simultaneously.
The preferable technical scheme is characterized in that the edge of the fixing cover is provided with a lead connector extending along the radial direction of the fixing cover, and the side wall of the large-diameter section is provided with a lead clamping groove which is matched with the lead connector and is arranged along the radial direction of the mounting sleeve.
Therefore, the lead connector conveniently connects the external circuit with the detection circuit board, and meanwhile, the connection cable does not need to be led out from the five-way of the frame, so that the damage of the connection cable is avoided.
The preferable technical scheme is characterized in that the mounting sleeve is provided with a first detection groove corresponding to the outer peripheral surface of the small-diameter section; the second that major diameter section diapire was equipped with detects the groove.
In this way, the axial strain gauge can be arranged in the first detection groove, so that the axial strain gauge can detect the axial strain condition of the mounting sleeve; the second detection groove can be used for installing a radial strain gauge so as to accurately detect the radial strain of the installation sleeve.
Preferably, the first detection groove is provided with a fixing piece in an embedded manner.
Therefore, the fixing piece can stably fix the axial strain gauge in the first detection groove, and the detection precision of the axial strain gauge is improved.
The preferable technical scheme is characterized in that a bearing matched with the middle shaft body is embedded in the small-diameter section.
Thus, the bearing can reduce the rotation friction force of the middle shaft body and reduce the abrasion.
The technical scheme is preferably characterized in that a plurality of rotating notches are further formed in the outer peripheral surface of the mounting sleeve corresponding to the edge of the connecting thread, and the rotating notches are uniformly arranged around the outer peripheral surface of the mounting sleeve.
Therefore, the mounting sleeve can be more conveniently rotated by rotating the notch, and the convenience of disassembly and assembly is improved
The invention has the beneficial effects that: the dismounting assembly is sleeved at one end of the middle shaft body, so that a user can conveniently mount and dismount the dismounting assembly; the dismounting can be completed without dismounting the whole middle shaft from the bicycle; when the bicycle moves ahead, the torque detection assembly can accurately detect the torque data of the rotation of the middle shaft body. The invention has reasonable structure, convenient assembly and disassembly and higher use value and popularization value.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is an exploded view of a bicycle bottom bracket moment sensing device in accordance with an embodiment.
FIG. 2 is an exploded view of a detecting assembly of the bicycle bottom bracket moment detecting device according to an embodiment.
FIG. 3 is a schematic view of an embodiment of a bicycle bottom bracket moment detecting device.
The meanings indicated by the respective reference numerals are as follows; axis body 1, installation cover 2, large diameter section 201, middle diameter section 202, little diameter section 203, first detection groove 204, connecting thread 205, rotation notch 206, lead wire draw-in groove 207, detect ring 3, mounting groove 301, support portion 302, detection circuit board 4, fixed lid 5, fixed boss 501, location projection 502, card protruding 503, lead wire plug 504, bearing 6, axial foil gage 7, radial foil gage 8, stationary blade 9.
Detailed Description
Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the prior art. Therefore, the present invention is an improvement of the prior art, which is substantially in the connection relationship between hardware, and not in the functions and methods themselves, that is, the present invention relates to a point of functions and methods, but does not include the improvements proposed in the functions and methods themselves. The description of the functions and methods of the present invention are for better explanation of the present invention in order to facilitate a better understanding of the present invention.
Example one
As shown in fig. 1, 2 and 3, in the first embodiment, the invention provides a bicycle middle axle torque detection device, which comprises a middle axle body 1 penetrating through a bicycle bottom bracket and a dismounting assembly sleeved at one end of the middle axle body 1; the dismounting component is sleeved at one end of the middle shaft body 1; the whole middle shaft does not need to be detached from the bicycle when the whole device is mounted or detached; specifically, the dismounting assembly comprises a mounting sleeve 2, and the mounting sleeve 2 is provided with stepped holes which are axially arranged along the mounting sleeve and penetrate through two ends of the mounting sleeve 2; the stepped hole comprises a large-diameter section 201, a middle-diameter section 202 and a small-diameter section 203; the large-diameter section 201 and the small-diameter section 203 respectively penetrate through two ends of the mounting sleeve 2; and the outer peripheral surface of the small-diameter section 203 corresponding to the mounting sleeve 2 is provided with a connecting thread 205 matched with a five-way pipe of the frame. The outer peripheral surface of the mounting sleeve 2 is also provided with a plurality of rotating notches 206 corresponding to the edges of the connecting threads 205, and the rotating notches 206 are uniformly arranged around the outer peripheral surface of the mounting sleeve 2. The small diameter section 203 is internally embedded with a bearing 6 matched with the middle shaft body 1.
As shown in fig. 1 and 2, when being installed, the middle shaft body 1 penetrates into the stepped hole from the small-diameter section 203, the bearing 6 in the small-diameter section 203 is in interference fit with the middle shaft body 1, the rotating friction force of the middle shaft body 1 is reduced, the installation sleeve 2 is connected to one end of a workshop five-way pipe through a connecting thread 205, the connecting thread 205 of the installation sleeve 2 is conveniently matched with the frame five-way pipe through a rotating notch 206, the assembly and disassembly components can be quickly installed on a frame, and the installation can be completed without other installation tools; when dismantling, from the one end of axis body 1 take off installation cover 2 can, need not to dismantle axis body 1 from the bicycle. In this embodiment, each edge of the rotation notch 206 may be rounded to facilitate rotation of the mounting sleeve 2; the bearing 6 adopts a rolling bearing 6, and the specification of the rolling bearing is selected according to the specification of the middle shaft body 1 of the standard component. The dismouting subassembly adopts the mode of installing in axis body 1 one end to reach the purpose that makes things convenient for the dismouting, in actual production, need not the die sinking again and does a lot of sizes, if the device damages, only need the installation cover 2 of dismouting subassembly from one of them serving of axis body dismantle change can, need not dismantle whole axis get off, more convenience of customers dismouting or change.
As shown in fig. 1 and fig. 2, a detection ring 3 arranged coaxially with the mounting sleeve 2 is arranged in the middle diameter section 202, the inner wall of the detection ring 3 is provided with abutting portions 302 arranged around the inner wall of the detection ring 3, and after one end of the middle shaft body 1 is inserted into the mounting sleeve 2 from the small diameter section 203, each abutting portion can abut against the outer peripheral surface of the middle shaft body 1; during detection, the detection ring 3 positioned in the middle diameter section 202 can be sleeved on the middle shaft body 1 and rotates along with the middle shaft body 1, so that parameters such as the treading frequency and the moment of the rotation of the middle shaft body 1 can be detected by using a detection mechanism.
Example two
As shown in fig. 1, fig. 2 and fig. 3, in order to detect the torque isoparametric of the central axis body 1 when rotating, in this embodiment, the detecting mechanism disposed in the large diameter section 201 includes the detecting circuit board 4 attached to the bottom wall of the large diameter section 201, a pair of hall sensors are disposed on the surface of the detecting circuit board 4 opposite to the detecting ring 3, a plurality of magnets disposed opposite to the hall sensors are disposed on the surface of the detecting ring 3, and each magnet is disposed around the central axis body 1. When the bicycle is trampling the footboard and moves ahead, it rotates to detect ring 3 and follow the axis, make each magnetite on detecting ring 3 use axis 1 axis of axis body to rotate as the centre of a circle, at the rotation in-process, hall response piece on the circuit detection board utilizes hall effect to sense each magnetite and rotates, hall response piece is through responding to each magnetite rotation and obtaining the pedal signal frequently when the bicycle moves ahead after MCU handles, in this embodiment, the preferred 12 of magnetite number, make detection circuit board 44 can double frequency out 24 signals, improve the precision that detects, LED pilot lamp can still be connected to detection circuit board 44, the axis rotational speed is faster, the LED lamp scintillation is faster, the person of facilitating the use observes.
As shown in fig. 1, 2 and 3, the detection circuit board 4 is further connected with an axial strain gage 7 and a radial strain gage 8, the axial strain gage 7 is in contact with the outer peripheral surface of the mounting sleeve 2, and the radial strain gage 8 is in contact with the end surface of the mounting sleeve 2. When a bicycle pedal is trampled to drive the bicycle to move forward, the reaction force of the middle shaft to the bicycle chain acts on the mounting sleeve 2, and the mounting sleeve 2 can be stressed to generate strain; in this embodiment, the strain gauge generates a strain signal when stressed, and the strain signal is processed and converted into a resistance change by the control processing circuit of the detection circuit board 4, the resistance change is processed by the amplifying circuit to obtain a voltage change, and the voltage change is processed and then output to be converted by DA to obtain an analog voltage signal. In this embodiment, 1V represents no signal and 3V represents a pedaling force signal of 100 NM. The control processor may also calculate the pedaling power of the rider by a power calculation formula P =0.105 rpm nm.
As shown in fig. 1, 2 and 3, in order to stably mount the magnets on the detection ring 3, a plurality of mounting grooves 301 arranged around the geometric center of the detection ring 3 are provided on the end surface of the detection ring 3, and each of the magnets is embedded in a corresponding mounting groove 301, and each of the magnets can be stably mounted in a corresponding mounting groove 301. Preventing the magnet from being thrown out of the detection ring 3 in the rotation process.
As shown in fig. 1, 2 and 3, a fixing cover 5 is embedded in the large-diameter section 201, a fixing boss 501 for fixing the detection circuit board 4 is arranged on the inner surface of the fixing cover 5, and a positioning boss 502 engaged with the edge of the detection circuit board 4 is arranged on the fixing boss 501. The surface of the fixing boss 501 can abut against the surface of the detection circuit board 4, so that the detection circuit board 4 is prevented from shifting.
As shown in fig. 1, 2 and 3, the edge of the fixing cover 5 is provided with a plurality of locking protrusions 503 which are locked with the side wall of the large-diameter section 201, and the locking protrusions 503 are uniformly arranged at intervals. The edge of the detection circuit board 4 is clamped with the positioning convex column 502, so that the detection circuit board 4 is prevented from moving, and the detection precision is ensured.
As shown in fig. 1, 2 and 3, the fixing cover 5 is fixed to the large-diameter portion 201 by fitting and engaging, and a plurality of engaging projections 503 engaging with the side wall of the large-diameter portion 201 are provided on the outer peripheral surface of the fixing cover 5. The fixing cover 5 can be stably fixed in the large-diameter section 201 through the clamping protrusions 503, and is convenient to detach.
As shown in fig. 1, 2 and 3, in order to avoid damage to the connection cable, the edge of the fixing cover 5 is provided with a terminal connector extending along the radial direction of the fixing cover 5, and the side wall of the large-diameter section 201 is provided with a terminal clamping groove 207 corresponding to the terminal connector and arranged along the radial direction of the mounting sleeve 2. The lead joint can be provided with a lead hole, and an external circuit is connected with the detection circuit board 4 through the lead hole. Therefore, the connecting cable is positioned on the outer side of the five-way joint of the frame and does not need to be led out from the middle position of the middle shaft body 1, and the damage of the connecting cable is avoided; the fixed cover 5 is also provided with a through hole coaxial with the central shaft body 1 so as to reduce and avoid the influence on the rotation of the central shaft body 1.
As shown in fig. 1, 2 and 3, in order to stably mount the axial strain gage 7 and the radial strain gage 8 on the mounting sleeve 2 to improve the detection accuracy, the mounting sleeve 2 corresponds to the first detection groove 204 on the outer peripheral surface of the small-diameter section 203; the second that the large-diameter section 201 diapire was equipped with detects the groove. The axial strain gauge 7 can be arranged in the first detection groove 204, so that the purpose of accurately detecting the axial strain is achieved; the second detection groove can be provided with the radial strain gauge 8, so that the radial strain detection precision is improved.
As shown in fig. 1, 2, and 3, after the axial strain gauge 7 is mounted in the first detection groove 204, in order to prevent the axial strain gauge 7 from being displaced, the fixing piece 9 for fixing the axial strain gauge 7 is fitted in the first detection groove 204 in the present embodiment. The fixing piece 9 can stably fix the axial strain gauge 7 in the first detection groove 204, and the detection accuracy of detecting the axial strain gauge 7 is 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; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can be modified, or some or all of the technical features can be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. A bicycle center shaft torque detection device is characterized by comprising a center shaft body (1) arranged in a bicycle bottom bracket in a penetrating manner and a dismounting assembly sleeved at one end of the center shaft body (1);
the dismounting assembly comprises an installation sleeve (2), and the installation sleeve (2) is provided with stepped holes which are axially arranged along the installation sleeve and penetrate through two ends of the installation sleeve (2); the stepped hole comprises a large-diameter section (201), a middle-diameter section (202) and a small-diameter section (203); the large-diameter section (201) and the small-diameter section (203) penetrate through two ends of the mounting sleeve (2) respectively; the middle diameter section (202) is internally provided with a detection ring (3) which is coaxial with the mounting sleeve (2), the inner wall of the detection ring (3) is provided with abutting parts (302) which are arranged around the inner wall of the detection ring (3), and after one end of the middle shaft body (1) is arranged on the mounting sleeve (2) in a penetrating manner from the small diameter section (203), each abutting part (302) can abut against the outer peripheral surface of the middle shaft body (1); the outer peripheral surface of the small-diameter section (203) corresponding to the mounting sleeve (2) is provided with a connecting thread (205) matched with a five-way pipe of the frame;
a detection mechanism for detecting the rotating moment of the middle shaft body (1) is further arranged in the large-diameter section (201); detection mechanism is including laminating in detection circuit board (4) of big diameter section (201) diapire, detection circuit board (4) and detection ring (3) relative be equipped with a pair of hall response piece on the surface, detection ring (3) surface is equipped with a plurality of magnetite with hall response piece mutual disposition, and each magnetite encircles axis body (1) and arranges, detection circuit board (4) still are connected with axial strain gauge (7) and radial strain gauge (8), the outer peripheral face of installing sleeve (2) is located in axial strain gauge (7), radial strain gauge (8) set up in big diameter section (201) diapire of installing sleeve (2).
2. The bicycle bottom bracket torque sensing device of claim 1,
the end face of the detection ring (3) is provided with a plurality of mounting grooves (301) which are arranged around the geometric center of the detection ring (3), and each magnet is embedded in the corresponding mounting groove (301).
3. The bicycle bottom bracket torque sensing device of claim 1,
the embedded fixed cover (5) that is equipped with of large diameter section (201), the internal surface of fixed cover (5) is equipped with fixed boss (501) of fixed detection circuit board (4), be equipped with on fixed boss (501) with location projection (502) of detection circuit board (4) edge block.
4. The bicycle bottom bracket torque sensing device of claim 3,
the edge of the fixed cover (5) is provided with a plurality of clamping protrusions (503) clamped with the side wall of the large-diameter section (201), and the clamping protrusions (503) are uniformly arranged at intervals.
5. The bicycle bottom bracket torque detecting device according to claim 3,
the fixed lid (5) edge is equipped with one along the radial lead connector who extends of fixed lid (5), major diameter section (201) lateral wall is equipped with and suits with the lead connector and along the lead wire draw-in groove (207) of installing cover (2) radial arrangement.
6. The bicycle bottom bracket torque sensing device of claim 1,
a first detection groove (204) is formed in the outer peripheral surface of the mounting sleeve (2) corresponding to the small-diameter section (203), and the first detection groove (204) is axially communicated with the large-diameter section (201) along the mounting sleeve (2); the second that major diameter section (201) diapire was equipped with detects the groove.
7. The bicycle bottom bracket torque detecting device according to claim 6,
a fixing piece (9) is embedded in the first detection groove (204).
8. The bicycle bottom bracket torque sensing device of claim 1,
the bearing (6) matched with the middle shaft body (1) is embedded in the small-diameter section (203).
9. The bicycle bottom bracket torque sensing device of claim 1,
the outer peripheral surface of the mounting sleeve (2) is provided with a plurality of rotating notches (206) corresponding to the edges of the connecting thread (205), and the rotating notches (206) are uniformly arranged around the outer peripheral surface of the mounting sleeve (2).
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| CN201910576959.2A CN110182296B (en) | 2019-06-28 | 2019-06-28 | Bicycle center shaft torque detection device |
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| CN201910576959.2A CN110182296B (en) | 2019-06-28 | 2019-06-28 | Bicycle center shaft torque detection device |
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| CN110182296B true CN110182296B (en) | 2023-03-28 |
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