JP3171874U - Bicycle speedometer - Google Patents

Abstract

Provided is a bicycle speedometer that can be applied to various types of bicycles and that can accurately detect a signal of a bicycle. A bicycle speedometer includes a meter main body for displaying information, and a detection device for detecting a signal generated by the bicycle. The detection device 20 includes a signal detection unit 21 installed on the bicycle frame, and a fixed seat whose attachment end is connected to the end of the bicycle crank 34 and whose seat end extends. Among them, the attachment end is screwed and connected to the end of the bicycle crank 34 by a fastening tool. A detected portion is provided at the sheet end. This makes it possible to accurately detect a bicycle rowing signal.

Description

  The present invention relates to a bicycle speedometer, and more particularly to an adjustable fixing structure for a bicycle speedometer detection device. The relative position of the detected part and the signal detection part of the detection device is freely adjusted, and an accurate bicycle rowing signal is detected by the bicycle speedometer.

  The concept of environmental protection and health is becoming increasingly popular, and riding a bicycle is not only a transportation tool advocating environmental protection, but also a very healthy leisure sport. A known bicycle speedometer includes a meter main body for displaying information and a detection device for detecting a bicycle rowing signal. Based on the signal detected by the detection device, information such as the number and frequency of speeding or the speed of the user can be calculated, displayed on the meter body, and provided for recording calorie consumption and other health information.

  Patent Document 1 is a detection device for rowing frequency, in which a magnetic detection device is provided at a position of the bottom bracket of the frame body, and a rotating disk that can rotate following the crank is provided on the same side as the magnetic detection device, The rotating disk corresponds to the position of the magnetic detection device. The rotating disk is further provided with one or more magnetic elements, and when the user runs the crank, the magnetic detection device detects a signal passing through the magnetic element, and the user obtains a signal for riding the bicycle.

Taiwan Patent No. M386237 Specification

  However, in this type of detection means, when a bicycle is run, if the magnetic field formed by the magnetic element does not accurately pass through the detection range of the magnetic detection device, an error in the detection signal is caused due to insufficient magnetic field strength. However, this kind of well-known rowing frequency detection device is installed on the bottom bracket of the bicycle frame, and its size and mounting position are specially designed according to various bicycle types, and it is suitable for all bicycle types. Not only can it not be applied, it is also inconvenient to install by the user's DIY.

  In order to solve the above-mentioned problem, an adjustable fixing structure for a bicycle speedometer detection device is presented from the present invention, and if the present invention is applied, the mounting position and distance of the bicycle speedometer detection device can be freely adjusted. The present invention can be applied to various types of bicycles, and can accurately detect a signal that a bicycle rides.

The speedometer for a bicycle according to the present invention includes a meter main body for displaying information and a detection device for detecting a bicycle rowing signal.
The detection device includes a signal detection unit installed on the bicycle frame, and a fixed seat that is connected to an attachment end of the bicycle crank unit and has a seat end extended. Among them, the attachment end is screwed and connected to the end of the bicycle crank by a fastening tool. A detected portion is provided at the end of the sheet.

  The first effect of the present invention is that the fixed seat changes the distance between the seat end of the fixed seat and the axis of the bicycle crank by changing the tightening angle with the bicycle crank, and the detected portion Is adjusted to a position where the signal detector can accurately detect the signal, and the bicycle speedometer can accurately detect the signal that the bicycle rides.

  The second effect of the present invention is that the opposite end of the screwed connection hole of the bicycle crank to the bicycle frame is the inner stage, and the other end is the outer stage. The outer stage is screwed to the pedal and the inner stage is provided with a fastening tool. On the premise that the conventional bicycle crank structure is not modified, the detected portion can be reliably fixed to the crank portion of the bicycle.

  The third effect of the present invention is that an adjustment hole is formed in the interior of the sheet end, and the detected portion can be screwed into the adjustment hole. As a result, the detected part can freely rotate to enhance the signal detection strength of the signal detecting part and the detected part.

It is a side view when the speedometer for bicycles by one Embodiment of this invention is applied to a bicycle. 1 is a perspective view of a bicycle speedometer according to an embodiment of the present invention. 1 is an exploded perspective view of a bicycle speedometer according to an embodiment of the present invention. 1 is a partially exploded perspective view of a bicycle speedometer according to an embodiment of the present invention. 1 is a partial cross-sectional view of a bicycle speedometer according to an embodiment of the present invention. It is explanatory drawing explaining operation | movement of adjustment of the speedometer for bicycles by one Embodiment of this invention. It is explanatory drawing explaining operation | movement of adjustment of the speedometer for bicycles by one Embodiment of this invention.

(One embodiment)
An adjustable fixing structure for a bicycle speedometer according to an embodiment of the present invention will be described with reference to FIGS. The bicycle speedometer 10 includes a meter main body 11 for displaying information, and a detection device 20 for detecting a bicycle rowing signal.
The detection device 20 includes a signal detection unit 21 and a fixed sheet 22. The signal detection unit 21 installed in the bicycle frame 30 includes a magnetic field sensor, and is attached to a place suitable for attachment such as the down tube 31, the seat tube 32, or the chain stay 33 of the bicycle frame 30 by the fixing base 211. Among them, the signal of the signal detector 21 is connected to the meter main body 11.

  The fixed seat 22 has a mounting end 221 connected to the bicycle crank 34, and the fixed seat 22 has a seat end 222 extending outside the bicycle crank 34. A fastening tool 223 is provided at the attachment end 221, and a screw connection hole 35 for screwing the fastening tool 223 is provided at the end of the bicycle crank 34. The screw connection hole 35 is an inner step 351 at the opposite end of the bicycle frame 30, and the other end is an outer step 352. The outer stage 352 is used for screwing connection of the pedal 36, and the inner stage 351 is used for fastening the fastening tool 223, and fastens the fixed seat 22 to the end of the bicycle crank 34. Further, the detected portion 23 is provided at the sheet end 222. The detected portion 23 is made of a magnetic member. An adjustment hole 224 is formed inside the sheet end 222, and the detected portion 23 can be installed in the adjustment hole 224 by a screwing method.

  As shown in FIGS. 3 and 4, in this embodiment, the conventional screw connection hole 35 of the bicycle crank 34 is divided into an inner step 351 and an outer step 352, and provided to the screw connection of the pedal 36 and the fastening tool 223, respectively. Therefore, on the premise that the structure of the conventional bicycle crank 34 is not modified, the detected portion 23 can be securely attached to the bicycle crank 34 portion. Therefore, the bicycle speedometer of the present embodiment is easy to install, is not subject to bicycle type limitations, and is convenient for the user's DIY installation.

  As shown in FIG. 5, a normal bicycle has a bicycle frame 30 and a bicycle crank 34 having different sizes or shapes depending on types. Therefore, when the signal detection unit 21 and the detected unit 23 are attached to each other, there may be a case where the detection is not possible at the attachable position. In contrast, in the present embodiment, the relative position between the signal detection unit 21 and the detected unit 23 can be adjusted by the fixing sheet 22. The fixed sheet 22 is fastened to the end portion of the bicycle crank 34 by a fastening tool 223. When the fastening tool 223 is loosened, the seat end 222 of the fixed seat 22 rotates about the screw connection hole 35 as a center, thereby changing the distance between the detected portion 23 inside the seat end 222 and the axis of the bicycle crank 34. Form. After the mounting position of the signal detection unit 21 and the axial center distance from the detected portion 23 to the bicycle crank 34 are matched, the fastening tool 223 is fastened to fix the fixing seat 22. As a result, when the user turns the bicycle crank 34 and rotates, the detected portion 23 follows the rotation path of the bicycle crank 34, thereby accurately passing the detection range of the signal detection portion 21 and rowing the bicycle. A signal can be generated and transmitted to the meter body 11 for display.

  Still referring to FIG. In the present embodiment, the distance from the detected portion 23 to the axis of the bicycle crank 34 can be freely adjusted, and the distance between the bicycle crank 34 and the bicycle frame 30 of various bicycle types is not matched. Therefore, as a measure for avoiding that the distance between the signal detection unit 21 and the detected unit 23 is too close to collide, or that the distance is too long to be detected accurately, the detected unit 23 is screwed, It is provided in the adjustment hole 224, and the distance from the signal detection unit 21 can be freely adjusted. Thereby, in addition to preventing the collision between the two, the signal detection intensity between the signal detection unit 21 and the detected unit 23 can be improved.

10 .... Bicycle speedometer 11 .... Meter body 20 .... Detection device 21 ... Signal detection unit 211 ... Fixing base 22 .... Fixing sheet 221 ... Mounting end 222・ ・ ・ Seat end 223 ・ ・ ・ Fastener 224 ・ ・ ・ Adjustment hole 23 ・ ・ ・ Detected part 30 ・ ・ ・ Bicycle frame 31 ・ ・ ・ Down tube 32 ・ ・ ・ Seat tube 33 ・ ・ ・· Chain stay 34 ··· Bicycle crank 35 ··· Screw-in connection hole 351 · · · Inner step 352 · · · Outer step 36 ··· Pedal

Claims (3)

Meter body to display information,
A detection device for detecting a rowing signal of a bicycle comprising a magnetic field sensor and installed on a bicycle frame and having a fixed seat;
With
The fixed sheet has a mounting end and a sheet end,
One end of a screw connection hole provided at the end of a bicycle crank is an inner stage facing the bicycle frame, and the other end of the screw connection hole is an outer stage used for screw connection of a pedal,
The attachment end of the fixed seat is attached to the inner stage of the end of the bicycle crank by a fastening tool,
At the sheet end of the fixed sheet, a detected portion made of a magnetic member is provided,
The fixing sheet is modified by the tightening tool to change a tightening angle with the bicycle crank, and adjust a path in which the detected portion rotates following the bicycle crank,
The bicycle speedometer, wherein the signal detection unit detects a signal from the detected portion, forms a bicycle rowing signal, and transmits the signal to the meter body.   2. The bicycle speedometer according to claim 1, wherein an adjustment hole for screwing and connecting the detected portion is formed in the seat end.   The bicycle speedometer according to claim 1, wherein the signal detection unit of the detection device is attached to the bicycle frame by a fixed base.

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