The invention is related to a weight training equipment with corresponding sensors.
Taiwan Utility Patent No. M433556 discloses the weight training equipment is equipped with a sensor set including a plurality of magnetic sensors for indicating the training status. Anyhow, such sensors takes more space and cost more money. A saving space and simple structure sensor arrangement is desired.
An object of the invention is to provide a weight training equipment with an ultrasonic sensor assembly including a transmitter unit, a receiver unit, a case and the support. The case is rotatably supported upon the support to expose the transmitter and the receiver upwardly. A freely rotatable pin unit is selectively inserted into the hole of the corresponding weight block of the weight training equipment to have its reflection surface downwardly face the sensor assembly. A distance between the pin unit and the sensor assembly during exercise can be measure by ultrasound transmitted from the transmitter unit toward the pin unit and further reflected by the reflection surface and received by the receiver unit.
Referring to
The ultrasonic sensor assembly 1 is attached to the frame 2 and under the weight blocks 3, and opposite to the pin unit 5. The ultrasonic sensor assembly 1 includes a transmitter unit 11, a receiver unit 12, a case 13 and a support 14, a substrate 15 on which the transmitter unit 11 and the receiver unit 12 are mounted, and a connector 16 for input/output.
The case 13 is of a column shape, including opposite end surfaces 133 and a circumferential surface 134 rebetween wherein the end surface 133 is circular while the circumferential surface 134 is rectangular when it is extended in a plane. The case 13 forms a pair of holes 1311 extending through the circumferential surface 134, and a pair of pivot holes 135 in the corresponding end surface 133. The case 13 includes the first part 131 and a second part 132 each having a semi-circular cylindrical shape. The first part 131 and the second part 132 commonly sandwich the substrate 15 therebewteen with the transmitter unit 11 and the receiver unit 12 exposed in the corresponding holes 1311, respectively. The first part 131 forms a channel 1312 extending through the end surfaces 133, and the second part 132 forms another channel 1323 extending through the end surfaces 133, so the channels 1312 and 1323 cooperatively form the corresponding pivot holes 135.
The second part 132 forms a notch 1321 extending outwardly through the circumferential surface 134, and a recess 1322 inwardly communicating with the channel 1323. In this embodiment, the substrate 15 is received in the recess 1233, and the connector 16 is located at an edge of the substrate 15 and received within the notch 1321. The support 14 includes a pair of opposite disks 141 and a stand 142 linked between the pair of disks 141. Each disk 141 includes a rotation shaft 1411 at the center so as to be received in the corresponding pivot hole 135. The stand 142 includes a pair of steps 1421 located inside/beside the corresponding disk 141 neighboring a lower region of the disk 141, and a cutout 1422 between the pair of steps 1421. Two opposite end regions of the case 13 are supported above the steps 1421, and the middle region of the case 13 is locate above the cutout 1422. Therefore, the case 13 can be rotated to different radial positions with regard to the support 14 via the rotation shaft 1411 retained in the pivot holes 135 for complying with the different weight training equipments.
The pin unit 5 includes a reflection section 51 and an insertion section 52. The reflection section 51 includes a bottom region 511 and a pair of oblique regions 52 arrange in an isosceles triangle. The insertion section 52 having a pin configuration, is located at the top apex, i.e., the intersecting point of the pair of oblique regions 52. Understandably, the bottom surface of the bottom region 511 is the so-called reflection surface. The weight block 3 includes an insertion hole 31 for insertion of the insertion section 52 selectively. The transmitter unit 11 and the receiver unit 12 of the ultrasonic control system 1 upwardly face toward the reflection section 51.
During exercising, the ultrasound emitted from the transmitter unit 11 initially hits the reflection surface of the pin unit 5 and is successively reflected to be received by the receiver unit 12. Therefore, the moving distance of the selected weight blocks can be calculated. The data collection box can obtain and analyze the collected data for further references. Notably, the free rotation of the triangle configuration of the rotatable pin unit 5 may assure the correct horizontal arrangement of the reflection surface advantageously. Understandably, the pin unit may be not rotatable but with the absolute securing relation with regard to the weight block. Anyhow, the reflection surface of the reflection section 51 is expected to be perpendicular to the imaginary center line of the transmitter unit 11 and the receiving unit 12 for maximizing the sensing effect.
While a preferred embodiment according to the present disclosure has been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present disclosure are considered within the scope of the present disclosure as described in the appended claims.
Number | Date | Country | Kind |
---|---|---|---|
201710026562.7 | Jan 2017 | CN | national |