TWI662254B - Displacement sensing device - Google Patents

Abstract

The invention relates to a displacement sensing device, which comprises a base, a sensing unit, a displacement frame, a support portion and a transmission unit. The sensing unit is arranged in one side of the base, and the displacement frame is movably arranged at two ends of the base. The sensing frame is provided on one side of the displacement frame facing the sensing unit, and the other side is provided with a connection portion. One end of the support portion is abutted against the connection portion, and the other end is abutted against the other end of the base. , The displacement frame is movably supported in the base, the transmission unit is arranged between the two ends on the other side of the base, and the connection portion is connected, and the displacement frame is moved between the two ends of the base by operating the transmission unit, The sensing unit is caused to sense a displacement amount between the sensed parts.

Description

Displacement sensing device

The invention relates to a displacement sensing device, in particular to a displacement sensing device used for detecting resistance of sports equipment.

Press, sports equipment (such as exercise bikes) are equipped with resistance knobs to adjust the amount of resistance during exercise. When the resistance is large, it consumes a large amount of calories during exercise, and when the resistance is small, it consumes a small amount of calories to achieve the expected Motion effect.

In addition, the way that the resistance knob adjusts the resistance is that the resistance knob drives the screw or cable to drive the resistance area of the magnet and the flywheel on the resistance device to determine its resistance. When the area of the magnet and the flywheel is large, its magnetic field is generated. The eddy current is large, which in turn generates a large magnetic force, otherwise the magnetic force is small.

Furthermore, in order to accurately calculate the amount of calories consumed by using sports equipment, it is usually necessary to obtain the amount of resistance during exercise and use relevant data (such as height, weight, speed, etc.) to calculate the amount of work performed by the athlete. And calories burned.

Generally, the way to obtain the resistance is to use the displacement sensor to obtain the adjusted amount of the resistance knob. However, the displacement sensor is a two-piece component that separates the magnet and the sensor. If it is used on sports equipment, it will have Problems such as accuracy deviation and difficulty in calibration make production difficult. Therefore, how to accurately measure the adjusted amount of the resistance knob, and the displacement sensor can be easily calibrated, and then the production can be smoothly performed are the problems that need to be solved.

In order to solve the problems such as the accuracy deviation of the displacement sensor of sports equipment and the difficulty of correction. Therefore, the main purpose of the present invention is to integrate the sensor and its related components into a single body, at the same time, it can be easily assembled, and it can facilitate calibration during production, thereby achieving the purpose of accurate measurement.

According to the purpose of the present invention, a displacement sensing device is provided, which includes a base, a sensing unit, a displacement frame, a support portion and a transmission unit. The sensing unit is disposed in one side of the base, the displacement frame is movably disposed between two ends of the base, and the side of the displacement frame facing the sensing unit is provided with a sensing portion, and the other side of the displacement frame is A connecting part is provided, one end of the supporting part is abutted against the connecting part, and the other end is abutted against the other end of the base to movably support the displacement frame in the base, and the transmission unit is provided on the other side of the base. Between the two ends, and the connection part is connected, when the user operates the transmission unit, the transmission unit can drive the displacement frame to move between the two ends of the base, so that the sensing unit senses the displacement amount between the sensed parts.

The base is provided with a guide groove, which is movably connected to the displacement frame for guiding and restricting the displacement frame to move up and down in the base, and approaching or away from the sensing unit, so that the displacement can be measured.

The sensing unit includes a circuit board and a sensor. The sensor is arranged on the circuit board. An amplifier circuit is provided on the circuit board. The amplifier circuit amplifies the sensing signal sensed by the sensor, and Wireless or wired transmission to an electronic device.

The sensor is a magnetic sensor, and the part to be sensed is a magnet.

The transmission unit includes a screw and an adjusting knob. One end of the screw protrudes from one end of the base and is connected to the adjusting knob. The other end of the screw protrudes from the other end of the base and is connected to a resistance device. The adjusting knob is operated to rotate the screw. , And then drive the displacement frame between the two ends of the base mobile.

Among them, the transmission unit is an adjustment steel cable. One end of the adjustment steel cable protrudes from one end of the base, and the other end of the adjustment steel cable protrudes from the other end of the base. Move between ends.

In summary, when the base of the displacement sensing device is installed on the sports equipment, the displacement of the resistance knob can be easily measured, and it can be easily calibrated and assembled.

1‧‧‧ base

10‧‧‧ sleeve

12‧‧‧ Upper cover

120‧‧‧Screw hole

14‧‧‧ lower cover

16‧‧‧Combination hole

160‧‧‧set screw

162‧‧‧nut

2‧‧‧sensing unit

20‧‧‧Circuit Board

22‧‧‧Sensor

24‧‧‧ Connector

3‧‧‧ Displacement Frame

30‧‧‧Sensored

32‧‧‧Connecting Department

4‧‧‧ support

5‧‧‧Drive unit

50, 58‧‧‧ screw

51‧‧‧Steel Rope

52‧‧‧Adjust knob

53‧‧‧steel cable 53

54‧‧‧ adjust the rope

540‧‧‧Abut Block

55‧‧‧ Adjustment Department

56‧‧‧Screw holder

6‧‧‧ electronic device

7‧‧‧Resistor

80‧‧‧ the first fixed piece

82‧‧‧Second fixing piece

90‧‧‧ fixed frame

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

FIG. 2 is a schematic sectional view of FIG. 1.

FIG. 3 is a schematic diagram of the use state of FIG. 1.

FIG. 4 is a schematic perspective view of another embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of FIG. 3.

FIG. 6 is a schematic diagram of the use state of FIG. 4.

FIG. 7 is a schematic sectional view of still another embodiment of the present invention.

FIG. 8 is a schematic sectional view of still another embodiment of the present invention.

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not intended to limit the present invention. The invention is further described below with reference to the drawings: Please refer to FIG. 1, the present invention is a displacement sensing device, which includes a base 1, a sensing unit 2, a displacement frame 3, a support portion 4 and a transmission unit 5. A sensing unit 2 is provided on one side of the base 1, a displacement frame 3 is movably disposed between two ends of the base 1, and a sensing portion 30 is provided on a side of the displacement frame 3 facing the sensing unit 2. The displacement frame 3 is provided with a connecting portion 32 on the other side, the supporting portion 4 is provided in the base 1, and one end of the supporting portion 4 abuts on the connecting portion 32 and the other end abuts on the other end of the base 1. The displacement frame 3 is movably supported in the base 1. A transmission unit 5 is provided between the two ends on the other side of the base 1 and is connected to the connecting portion 32. In this way, when the user operates the transmission unit 5, the transmission unit 5 can drive the displacement frame 3 to move between the two ends of the base 1, so that the sensing unit 2 senses the amount of displacement between the detected parts 30.

In the present invention, the sensing unit 2 includes a circuit board 20 and a sensor 22. The sensor 22 is provided on the circuit board 20, and the circuit board 20 is provided with an amplifying circuit (not shown). The sensing signal sensed by the sensor 22 is amplified, and then transmitted to an electronic device 6 by wireless or wire. The sensor 22 is a magnetic sensor, and the detected part 30 is a Magnet sensed by a magnetic sensor. The electronic device 6 may be an electronic watch, a mobile phone or a computer provided on the sports equipment.

In an embodiment of the present invention, please refer to FIGS. 1 to 3. The transmission unit 5 includes a screw 50 and an adjustment knob 52. One end of the screw 50 protrudes from one end of the base 1 and is connected to the adjustment knob 52 and the screw 50. The other end of the projection protrudes from the other end of the base 1 and is connected to a resistance device 7. The outer diameter of the screw 50 between the bottom edge of the connecting portion 32 and the resistor 7 is smaller than the outer diameter of the screw 50 between the upper edge of the connecting portion 32 and the adjustment knob 52, so that the position between the bottom peripheral edge of the connecting portion 32 and the screw is The support part 4 can be abutted at one end, and a shoulder portion is formed at a position where the large and small diameters of the screw are connected, and this shoulder portion abuts at a peripheral edge position of the top of the connecting portion 32. When the adjustment knob 52 is operated and the screw 50 is rotated, the flywheel is increased. During the rotation resistance, the shoulder of the screw 50 will push the displacement frame 3 toward the sensor 22, so that the resistance device 7 approaches the flywheel of the exercise bike, and when the adjustment knob 52 is operated to rotate the screw 50, to reduce the resistance of the flywheel rotation The displacement frame 3 is pushed against the shoulder of the screw 50 by the support portion 4 so that the displacement frame 3 can move toward the adjustment knob 52 and gradually move away from the sensor 22 while driving the resistance device 7 away from the flywheel of the exercise bike, that is, The rotation resistance of the flywheel can be reduced. Since the configuration and structure between the resistance device 7 and the flywheel belong to the prior art, they will not be described in detail here.

In this way, when the operation knob 52 is turned forward or reverse, the displacement frame 3 is moved by the screw 50 toward the proximity sensor 22, or the displacement frame 3 is moved by the screw 50 toward the sensor 22 away from the sensor 22. In the process of movement, the sensor 22 senses that the portion 30 to be sensed is approaching or distant, and then senses different analog voltages, and the magnitude of the displacement is converted from these analog voltages. The displacement amount is transmitted to the electronic device 6 or wirelessly. In the present invention, a connector 24 provided on the circuit board is electrically connected to the electronic device 6, and the electronic device 6 uses related data ( (Such as: height, weight, speed, etc.) to calculate the amount of work and calories burned by the athlete.

In another embodiment of the present invention, please refer to FIGS. 4 to 6. The transmission unit 5 is an adjustment steel cable 54. One end of the adjustment steel cable 54 protrudes from one end of the base 1, and is connected to the adjustment knob 52 to adjust the steel cable. The other end of 54 protrudes from the other end of the base 1 and is connected to another resistance device 7, and an abutment block 540 is fixed on the adjustment cable 54. The abutment block 540 is abutted against the back of the connection portion 32 of the displacement frame 3. On one side of the sensing unit 2. In this way, when the adjustment cable 54 is operated to increase the resistance of the flywheel, the adjustment knob 52 can be operated by the adjustment cable 54 to drive the abutment block 540 to push the displacement frame 3 toward the sensor 22, and when the adjustment knob 52 is operated to adjust the cable 54. When the resistance of the flywheel is to be reduced, the adjusting block 54 drives the abutment block 540 to move in the direction of the adjusting knob 52, and at the same time, it is pushed by the support portion 4. The connection portion 32 of the dynamic displacement frame 3 moves in a direction away from the sensor 22, so that during the displacement process of the displacement frame 3, the sensor 22 also senses that the portion 30 to be sensed is approaching or distant, thereby sensing different Analog voltage, and the magnitude of displacement is converted from the magnitude of these analog voltages. The displacement is transmitted to the electronic device via wired or wireless means, and the electronic device uses related data (such as height, weight, speed ... Etc.) Calculate the amount of work and calories burned by the athlete.

In the foregoing two embodiments, the supporting portion 4 is a spring, and one end of the spring abuts against the peripheral edge of the connecting portion 32 facing the other end of the base 1, and the other end abuts against the other end of the base 1. One sleeve 10 is provided, and the displacement frame 3 is movably supported in the base 1. The base 1 includes an upper cover 12 and a lower cover 14, and each of the upper cover 12 and the lower cover 14 is provided with a screw hole 120, so that the upper cover 12 and the lower cover 14 are combined together by using screws and nuts. In addition, a combination hole 16 is provided at one end of the base 1. The combination hole 16 is used for screwing a fixing screw 160 and a nut 162, so that the base 1 can be connected to the frame of the exercise bike through the fixing screw 160 and the nut 162. on.

In summary, the displacement sensing device is based on the combination hole 16 provided on the base 1 and can be easily installed on sports equipment. With the design of the upper cover 12 and the lower cover 14, the base can be easily disassembled. The pedestal 1, the sensing unit 2 and the sensed part 30 are simple to set up, which is convenient for correcting the displacement sensing device.

In order to simplify the structure of the displacement sensing device, it is easier to assemble and adjust the displacement sensing device. Please refer to FIG. 7, another displacement sensing device according to the present invention includes a sensing unit 2 and a transmission unit 5, that is, it does not include the base 1 and the displacement frame according to the two embodiments described above. 3 和 Supporting section 4. The transmission unit 5 includes a screw fixing frame 56, a screw 58 and an adjusting knob 52. The screw 58 is screwed into the screw fixing frame 56, and one end of the screw 58 facing the resistance device 7 is connected to the resistance device 7, and the sensing unit 2 It is located on one side of the resistance device 7 facing the screw 58. The outer edge of the screw holder 56 faces the sensing unit 2 and a sensing portion 30 is provided. The other end of the screw 58 is connected to an adjustment knob. 52. In this way, when the user operates the adjustment knob 52, the screw 58 can drive the resister 7 to approach or move away from the base 1, so that the sensing unit 2 senses the amount of displacement between the sensing portions 30.

In the present invention, the sensing unit 2 may be a magnetic force sensor, and the portion to be sensed 30 may be a magnetic element (such as a magnet). The magnetic element is a combination of two semi-circles and screws outside the screw fixing frame 56. .

In yet another displacement sensing device of the present invention, please refer to FIG. 8. The difference between the foregoing another displacement sensing device is that the transmission unit 5 includes a steel cable sleeve 51, a steel cable 53 and an adjustment knob 52 (as shown in FIG. 6). ), Where the adjusting knob 52 is provided on the sports equipment, the steel cable 53 is passed through the steel cable sleeve 51, one end of the steel cable 53 is connected to the adjustment knob 52, the other end of the steel cable is connected to the resistance device 7, and the steel cable sleeve 51 is extended by one end of the adjustment knob 52 At a certain distance, the sensing unit 2 is sleeved on the outer edge of the steel cable sleeve 51, and the sensed part 30 is provided on the outer edge of the steel cable sleeve 51, and is fixed outside the steel cable sleeve 51 by the fixing frame 90 and the nut 92 And within the range sensed by the sensing unit 2, so that when the user operates the adjustment knob 52, the steel cable 53 can drive the sensing portion 30 to approach or move away from the sensing unit 2, so that the sensing unit 2 senses The amount of displacement between the sensed parts 30.

In the foregoing invention, the sensing unit 2 may be a magnetic force sensor, and the detected portion 30 may be a magnetic element (such as a magnet), and is provided between the sensing unit 2 and the outer edge of the steel cable sleeve 51. There is a first fixing piece 80. The first fixing piece 80 is used to fix the circuit board 20. The circuit board 20 is provided with a sensing unit 2. A second fixing piece 82 is provided between the sensed part 30 and the steel cable 53. The second fixing piece 82 can be a magnetically permeable material or a non-magnetically permeable material. If the second fixing piece 82 is a magnetically permeable material, the magnetic properties can be expanded. The magnetic area of the component.

According to the above, the displacement sensing device can be used on sports equipment without a base, because the easy assembly between the sensing unit 2 and the detected part 30 also makes The adjustment between the sensing unit 2 and the detected part 30 is easy.

The above detailed description is specifically for the embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the technical spirit of the present invention should be included in this case. Patent scope. In addition, this case is not only innovative in terms of technical ideas, but also has many of the above-mentioned effects that are not available in traditional methods. It has fully met the requirements for statutory invention patents that are novel and progressive, and submitted an application in accordance with the law. We ask your office to approve this invention. Patent applications to encourage inventions to the utmost.

Claims (15)

A displacement sensing device includes: a base; a sensing unit, which is fixedly disposed in one side of the base; a displacement frame, which is disposed in the base, and the displacement frame faces the sensing unit. A sensing portion is provided on one side, and a connecting portion is provided on the other side; a supporting portion, one end of the supporting portion is abutted against the connecting portion, and the other end is abutted against the other end of the base, and A displacement frame is movably supported in the base; a transmission unit is provided between the two ends on the other side of the base, and is connected to the connecting portion, and the displacement frame is driven on the base by operating the transmission unit The two ends move so that the sensing unit senses the amount of displacement between the sensed parts. The displacement sensing device according to claim 1, wherein the base is for fixing on a sports equipment. The displacement sensing device according to claim 1, wherein the sensing unit includes a circuit board and a sensor, the sensor is disposed on the circuit board, and an amplifying circuit is provided on the circuit board, and the amplifier The circuit is to amplify the sensing signal sensed by the sensor and transmit it to an electronic device. The displacement sensing device according to claim 3, wherein the sensor is a magnetic force sensor, and the part to be sensed is a magnet. The displacement sensing device according to claim 3, wherein the electronic device is an electronic watch, a mobile phone or a computer provided on a sports equipment. The displacement sensing device according to claim 1, wherein the transmission unit includes a screw and an adjustment knob, one end of the screw protrudes from one end of the base, and the adjustment knob is connected, and the other end of the screw protrudes from The other end of the base is connected with a resistance device, and the adjusting knob is operated to rotate the screw, thereby driving the displacement frame to move between two ends of the base. The displacement sensing device according to claim 1, wherein the support portion is a spring, and one end of the spring is abutted against a peripheral edge of the connecting portion facing the other end of the base, and the other end is abutted against the base. A sleeve is provided at the other end of the seat, and the displacement frame is movably supported in the base. The displacement sensing device according to claim 1, wherein the transmission unit is an adjustment steel cable, one end of the adjustment steel cable protrudes from one end of the base, and the adjustment steel cable is fixed with an abutment block in the base. The abutment block abuts the side of the connection portion of the displacement frame facing away from the sensing unit, the other end of the adjustment cable protrudes from the other end of the base, and is connected to a resistance device to operate the adjustment cable. The displacement frame is driven to move between two ends of the base. The displacement sensing device according to claim 1, wherein one end of the adjustment cable is connected with an adjustment knob, and the operation of the adjustment knob can link the adjustment cable and drive the abutment block to move between the two ends of the base. , That is, the displacement frame is moved with the abutment block. The displacement sensing device according to claim 9, wherein the supporting portion is a spring, and one end of the spring abuts on a peripheral edge of the connecting portion facing the other end of the base, and the other end abuts on the base. A sleeve is provided at the other end of the seat, and the displacement frame is movably supported in the base. A displacement sensing device includes: a sensing unit fastened to a side of a resistance device of a sports equipment; a transmission unit including: a screw fixing frame; a screw screwed on the screw One end of the screw facing the resistance device is connected to the resistance device; an adjusting knob is provided at the other end of the screw; a sensing portion is provided at an outer edge of the screw fixing frame to face the sensor The position of the sensing unit; wherein, by operating the adjusting knob, the screw can drive the resistance device to approach or move away from the screw fixing frame, so that the sensing unit senses the amount of displacement between the sensing portions. The displacement sensing device according to claim 11, wherein the sensing unit is a magnetic force sensor, and the sensing portion is a magnetic element. A displacement sensing device includes: a transmission unit including: an adjustment knob, which is arranged on a sports equipment; a steel cable, one end of the steel cable is connected to the adjustment knob, and the other end of the steel cable is connected to a resistance provided by the sports equipment A steel cable sleeve, which is sleeved outside the steel cable from the adjusting knob; a sensing unit, which is fixed at the outer edge of the steel cable sleeve by a fixing frame and a nut; a sensed part, It is set on the steel cable and is within the sensing range of the sensing unit; wherein, the adjusting knob is operated to pull the steel cable to drive the portion to be sensed to approach or move away from the sensing unit, so that the sensing unit senses The amount of displacement to the part to be sensed. The displacement sensing device according to claim 13, wherein the sensing unit is a magnetic force sensor, and the detected portion is a magnetic element. The displacement sensing device according to claim 14, wherein a first fixing piece is provided between the sensing unit and an outer edge of the steel cable sleeve, and a second fixing piece is provided between the detected portion and the steel cable. .