CN211107872U

CN211107872U - Transmission assembly and bicycle

Info

Publication number: CN211107872U
Application number: CN201921024695.1U
Authority: CN
Inventors: 李运隆
Original assignee: Simi Technology Guangzhou Co ltd
Current assignee: Simi Technology Guangzhou Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-07-28
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to the technical field of bicycles, and provides a transmission assembly and a bicycle, which comprises an inner ring body, an outer ring body and a controller, wherein the outer ring body is annularly arranged on the outer side of the inner ring body; the inner ring body is fixedly connected with the outer ring body through a connecting piece, a strain gauge for acquiring torsion force applied to the connecting piece is arranged on the connecting piece, and a rotating speed measurer is arranged on the inner ring body/the outer ring body; the strain gauge and the rotating speed measurer are respectively electrically connected with the controller. When the inner ring body drives the outer ring body to rotate or the outer ring body drives the inner ring body to rotate, the strain gauge on the connecting piece for connecting the inner ring body and the outer ring body can acquire the torque on the connecting piece; and a rotating speed measurer positioned on the inner ring body/the outer ring body can measure the rotating speed of the inner ring body/the outer ring body, and the controller can obtain the power transmitted between the inner ring body and the outer ring body through the torque force and the rotating speed.

Description

Transmission assembly and bicycle

Technical Field

The utility model belongs to the technical field of the bicycle, more specifically say, relate to a transmission assembly and bicycle.

Background

The bicycle is generally applied in modern life, and a user often needs to calculate the amount of exercise in the exercise process, but the existing bicycle only has the function of riding, and if the power generated by the user stepping on a pedal to drive a crank to rotate in the riding process needs to be calculated, other complex auxiliary tools need to be utilized, and the bicycle is very complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transmission assembly to solve the calculation that exists among the prior art and trample the footboard and drive the produced technical problem of power of crank rotation very complicated of in-process user.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a transmission assembly, which comprises an inner ring body, an outer ring body and a controller, wherein the outer ring body is annularly arranged outside the inner ring body; the inner ring body is fixedly connected with the outer ring body through the connecting piece, a strain gauge for acquiring torsion force applied to the connecting piece is arranged on the connecting piece, and a rotating speed measurer is arranged on the inner ring body/the outer ring body; the strain gauge and the rotating speed measurer are respectively electrically connected with the controller.

Furthermore, the number of the connecting pieces is two, and the two connecting pieces are respectively positioned at two opposite ends of the inner ring body; the number of the strain gauges is two, and the two connecting pieces correspond to the two strain gauges one to one.

The first shell and the second shell are respectively enclosed to form a first cavity, a second cavity and a wire passing hole, the first cavity, the second cavity and the wire passing hole are arranged on the strain gauge in a covering mode, the second cavity is used for containing the controller, and the wire passing hole is communicated with the first cavity and the second cavity.

Furthermore, one end of the first shell is embedded in a gap between the inner ring body and the outer ring body.

Furthermore, a first groove is formed in the first shell, a second groove is formed in the second shell, and the first groove and the second groove are enclosed to form the wire passing hole.

Further, the second shell is clamped on the outer ring body/the inner ring body.

Further, a battery is arranged in the second cavity and electrically connected with the controller.

Furthermore, a clamping groove is formed in the connecting piece, and the first shell is clamped in the clamping groove.

Further, the screw thread connection device also comprises a screw which sequentially penetrates through the second shell and the first shell and is in threaded connection with the outer ring body/the inner ring body.

The utility model also provides a bicycle, which comprises a crank, a fluted disc and the transmission component; the inner ring body is sleeved and fixed on the crank, and the outer ring body is fixed on the fluted disc.

The utility model provides a transmission assembly's beneficial effect lies in: compared with the prior art, the transmission component of the utility model has the advantages that the inner ring body drives the outer ring body to rotate, or when the outer ring body drives the inner ring body to rotate, the strain gauge on the connecting piece connecting the inner ring body and the outer ring body can obtain the torque force on the connecting piece; and a rotating speed measurer positioned on the inner ring body/the outer ring body can measure the rotating speed of the inner ring body/the outer ring body, and the controller can obtain the power transmitted between the inner ring body and the outer ring body through the torque force and the rotating speed. The transmission assembly described above can also be applied to bicycles.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view illustrating an assembly of an inner ring, an outer ring and a connecting member according to an embodiment of the present invention;

fig. 2 is a first schematic perspective view of a first housing according to an embodiment of the present invention;

fig. 3 is a second schematic perspective view of the first housing according to the embodiment of the present invention;

fig. 4 is a first schematic perspective view of a second housing according to an embodiment of the present invention;

fig. 5 is a second schematic perspective view of a second housing according to an embodiment of the present invention;

fig. 6 is an assembly schematic diagram of a first housing according to an embodiment of the present invention;

fig. 7 is an assembly schematic diagram of the first housing and the second housing according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-internal ring body; 11-gap; 2-outer ring body; 3-a connector; 4-strain gauge; 51-a first housing; 511-a first groove; 52-a second housing; 521-a second groove; 53-a first chamber; 54-a second chamber; 6-screw.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 7, a transmission assembly according to the present invention will now be described. The transmission assembly comprises an inner ring body 1, an outer ring body 2 annularly arranged on the outer side of the inner ring body 1, and a controller; the inner ring body 1 is fixedly connected with the outer ring body 2 through a connecting piece 3, a strain gauge 4 for acquiring torsion force applied to the connecting piece 3 is arranged on the connecting piece 3, and a rotating speed measurer (not shown) is arranged on the inner ring body 1/the outer ring body 2; the strain gauge 4 and the rotating speed measurer are respectively electrically connected with the controller.

Thus, when the inner ring body 1 drives the outer ring body 2 to rotate, or the outer ring body 2 drives the inner ring body 1 to rotate, the strain gauge 4 on the connecting piece 3 connecting the inner ring body 1 and the outer ring body 2 can obtain the torque force on the connecting piece 3; the rotational speed measuring device located on the inner ring body 1/outer ring body 2 can measure the rotational speed of the inner ring body 1/outer ring body 2, and the controller can obtain the power transmitted between the inner ring body 1 and outer ring body 2 by the above-mentioned torque and rotational speed (when calculating the power, the rotational radius of the transmitting measuring device/strain gauge 4 can be measured by a ruler according to actual conditions).

Optionally, in one embodiment, the rotational speed measurement of the tachometer is achieved by an angular velocity sensor/accelerometer.

Optionally, the strain gauge 4 is a resistive strain gauge 4 or an optical strain gauge 4.

Further, referring to fig. 1, as a specific embodiment of the transmission assembly provided by the present invention, the number of the connecting members 3 is two, and the two connecting members 3 are respectively located at two opposite ends of the inner ring 1; the number of the strain gauges 4 is two, and the two connecting pieces 3 correspond to the two strain gauges 4 one by one. Thus, the two strain gauges 4 perform measurement more reliably at opposite ends of the inner ring body 1.

Further, please refer to fig. 1 to 7, which are specific embodiments of the transmission assembly provided by the present invention, further comprising a first housing 51 and a second housing 52 clamped on the first housing 51, wherein the first housing 51 and the second housing 52 respectively enclose a first chamber 53 covering the strain gauge 4, a second chamber 54 for accommodating the controller, and a wire passing hole communicating the first chamber 53 and the second chamber 54. In this manner, the strain gage 4 is protected/sealed by the first chamber 53, and the wires on the strain gage 4 are connected to the controller in the second chamber 54 through the wire passing hole.

Further, referring to fig. 1 to 7, as an embodiment of the transmission assembly of the present invention, one end of the first housing 51 is embedded in the gap 11 between the inner ring 1 and the outer ring 2. In this way, the first housing 51 more stably maintains the relative position with the inner ring body 1/the outer ring body 2.

Further, referring to fig. 1 to 7, as a specific embodiment of the transmission assembly provided by the present invention, a first groove 511 is disposed on the first housing 51, a second groove 521 is disposed on the second housing 52, and the first groove 511 and the second groove 521 surround to form a wire passing hole. Therefore, the second shell 52 is folded on the first shell 51 to form the wire passing hole, which is very convenient; and the cable can be conveniently arranged in the wire passing hole only by arranging the cable in the first groove 511 and then folding the second shell 52.

Further, referring to fig. 1 to 7, as an embodiment of the transmission assembly of the present invention, the second housing 52 is clamped on the outer ring 2/the inner ring 1. In this manner, the second housing 52 is very convenient to detach/mount.

Further, referring to fig. 1 to 7, as an embodiment of the transmission assembly provided by the present invention, a battery is disposed in the second chamber 54, and the battery is electrically connected to the controller. In this manner, the battery may power the controller. Optionally, a power supply interface (not shown) connected with a battery is provided on the first housing 51.

Further, referring to fig. 1 to 7, as a specific embodiment of the transmission assembly provided by the present invention, a slot is disposed on the connecting member 3, and the first housing 51 is clamped in the slot. In this way, the connection between the first housing 51 and the connecting member 3 is more secure.

Further, referring to fig. 1 to 7, as an embodiment of the transmission assembly provided by the present invention, the transmission assembly further includes a screw 6 passing through the second housing 52 and the first housing 51 in sequence and threadedly coupled to the outer ring body 2/the inner ring body 1. In this way, the screws 6 can prevent the first and

second cases

51 and 52 from loosening from the outer ring body 2 and the inner ring body 1, respectively.

Referring to fig. 1 to 7, the present invention further provides a bicycle, which includes a crank (not shown), a chainring (not shown), and a transmission assembly; the inner ring body 1 is sleeved and fixed on the crank, and the outer ring body 2 is fixed on the fluted disc. Thus, the crank drives the fluted disc to work through the inner ring body 1, the connecting piece 3 and the outer ring body 2 in sequence; due to the adoption of the transmission assembly, when the inner ring body 1 drives the outer ring body 2 to rotate, or the outer ring body 2 drives the inner ring body 1 to rotate, the strain gauge 4 on the connecting piece 3 for connecting the inner ring body 1 and the outer ring body 2 can obtain the torque force on the connecting piece 3; the rotation speed measuring device positioned on the inner ring body 1/the outer ring body 2 can measure the rotation speed of the inner ring body 1/the outer ring body 2, and the controller can obtain the power transmitted between the inner ring body 1 and the outer ring body 2 through the torsion and the rotation speed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The transmission assembly is characterized in that: comprises an inner ring body, an outer ring body annularly arranged outside the inner ring body, a connecting piece and a controller; the inner ring body is fixedly connected with the outer ring body through the connecting piece, a strain gauge for acquiring torsion force applied to the connecting piece is arranged on the connecting piece, and a rotating speed measurer is arranged on the inner ring body/the outer ring body; the strain gauge and the rotating speed measurer are respectively electrically connected with the controller.

2. The drive assembly of claim 1, wherein: the number of the connecting pieces is two, and the two connecting pieces are respectively positioned at two opposite ends of the inner ring body; the number of the strain gauges is two, and the two connecting pieces correspond to the two strain gauges one to one.

3. The drive assembly of claim 1, wherein: the strain gauge is characterized by further comprising a first shell and a second shell clamped on the first shell, wherein the first shell and the second shell are respectively enclosed to form a first cavity, a second cavity and a wire passing hole, the first cavity, the second cavity and the wire passing hole are arranged on the strain gauge in a covering mode, the second cavity is used for containing the controller, and the first cavity and the second cavity are communicated.

4. The drive assembly of claim 3, wherein: one end of the first shell is embedded in a gap between the inner ring body and the outer ring body.

5. The drive assembly of claim 3, wherein: the wire passing hole is formed by enclosing the first groove and the second groove.

6. The drive assembly of claim 3, wherein: the second shell is clamped on the outer ring body/the inner ring body.

7. The drive assembly of claim 3, wherein: a battery is arranged in the second chamber and electrically connected with the controller.

8. The drive assembly of claim 3, wherein: a clamping groove is formed in the connecting piece, and the first shell is clamped in the clamping groove.

9. The drive assembly of claim 3, wherein: and the screw penetrates through the second shell and the first shell in sequence and is in threaded connection with the outer ring body/the inner ring body.

10. Bicycle, including crank and fluted disc, its characterized in that: comprising a transmission assembly according to any of claims 1 to 9; the inner ring body is sleeved and fixed on the crank, and the outer ring body is fixed on the fluted disc.