JPH02109228U

JPH02109228U -

Info

Publication number: JPH02109228U
Application number: JP1692989U
Authority: JP
Priority date: 1989-02-17
Filing date: 1989-02-17
Publication date: 1990-08-31
Anticipated expiration: 2004-02-17
Also published as: JPH0747714Y2

Description

[Brief explanation of the drawing]

第１図は、本考案に係るトルク測定装置の一実
施例の全体の外観構成を一部破断（第２図Ａ―Ａ
′矢視方向断面）して示す側面図、第２図は、第
１図に示す実施例の車輪を省略した正面図、第３
図は、第１図に示す車軸アダプタを上記正面図の
背面側から見た背面図、第４図は、第１図の実施
例が有する脱輪防止機構部の構成を一部破断して
示す側面図、第５図および第６図は、起歪板の構
成を詳しく示した図で、第５図は正面図、第６図
は第５図のＢ―Ｂ′矢視方向断面図、第７図は、
第５図に示した第２添着予定面の１つを代表示と
してトルク検出用のひずみゲージの添着状態を示
す拡大断面図、第８図は、トルク検出用のホイー
トストンブリツジの一実施例を示す回路図、第９
図は、トルク検出動作を説明するために第２添着
予定面を有するトルク用起歪片の近傍を誇張して
示す拡大平面図である。１……駆動軸、１ａ……車輪取付部、１ｂ……
取付ねじ穴、２……キヤリパー、３……車輪、３
ａ……リム、４……デイスク、４ａ……切断部、
５……デイスクスペーサ、５ａ，１２……取付ね
じ孔、６……溶接部、７……車輪アダプタ、７ａ
，８，２０……座繰り穴、７ｂ，８ａ，２０ａ…
…挿通孔、９……貫通穴、１０……起歪板、１０
ａ……長円孔、１１……起歪片、１３，１９……
円形凹状部、１５……環状溝、１６……取付ボル
ト、１６ａ……突出部、１７……カバー、１８…
…カバー貫通孔、１９ａ……逃げ穴、２１……カ
バー取付ボルト、２２……脱輪防止機構部、２３
……歯車、２３ａ……歯車取付ねじ、２４……ス
リツプリング装置、２５……磁気センサ、２７…
…正規のオフセツト位置、２８……トルク検出器
。 Fig. 1 shows the overall external appearance of an embodiment of the torque measuring device according to the present invention, partially cut away (Fig. 2 A-A
Fig. 2 is a front view of the embodiment shown in Fig. 1 with wheels omitted;
The figure is a rear view of the axle adapter shown in Figure 1 seen from the rear side of the front view above, and Figure 4 is a partially cutaway view of the configuration of the wheel slippage prevention mechanism included in the embodiment of Figure 1. A side view, FIG. 5, and FIG. 6 are diagrams showing the structure of the strain plate in detail. FIG. 5 is a front view, and FIG. Figure 7 is
FIG. 5 is an enlarged cross-sectional view showing the attached state of the strain gauge for torque detection using one of the second attachment surfaces shown as a representative, and FIG. 8 is an example of the Wheatstone bridge for torque detection. Circuit diagram shown, No. 9
The drawing is an enlarged plan view exaggerating the vicinity of the torque strain-generating piece having the second attachment surface in order to explain the torque detection operation. 1... Drive shaft, 1a... Wheel mounting part, 1b...
Mounting screw hole, 2...Caliper, 3...Wheel, 3
a...Rim, 4...Disk, 4a...Cutting part,
5...Disk spacer, 5a, 12...Mounting screw hole, 6...Welding part, 7...Wheel adapter, 7a
, 8, 20... counterbore hole, 7b, 8a, 20a...
...Through hole, 9...Through hole, 10...Strain plate, 10
a...Oval hole, 11...Strain piece, 13, 19...
Circular concave portion, 15... Annular groove, 16... Mounting bolt, 16a... Projection, 17... Cover, 18...
... Cover through hole, 19a ... Relief hole, 21 ... Cover mounting bolt, 22 ... Wheel drop prevention mechanism section, 23
... Gear, 23a ... Gear mounting screw, 24 ... Slipper ring device, 25 ... Magnetic sensor, 27 ...
...Regular offset position, 28...Torque detector.

Claims

[Scope of Claim for Utility Model Registration] (1) The type is determined by the diameter of the pitch circle of the mounting hole into which multiple wheel mounting bolts are screwed together and the number of the mounting holes that are approximately equally distributed on this pitch circle. In a torque measuring device that is inserted between a wheel mounting part and a wheel, and measures the torque acting on the wheel by converting it into an electrical quantity, the torque measuring device is provided at the end of the drive shaft, and has a plurality of pitch circles with different pitch circles. A plurality of axle adapters are selectively and removably attached to each of the wheel attachment parts with the wheel attachment bolts, a wheel having a large circular hole formed in the center of the disk, and the circular hole of the wheel. The disk spacer is fitted into the wheel and firmly fixed to the wheel while maintaining the same offset as the regular wheel, and the overall shape is approximately disk-shaped, and the optional axle adapter is placed near the center of the wheel. Disk spacers are concentrically superimposed on the peripheral portions, and holes of a number divisible by at least 4 are uniformly formed on a circumference of a predetermined radius, so that the holes extend in a radial direction between adjacent holes. A plurality of spoke-shaped strain-generating pieces are formed, and the thickness of the strain-generating piece in the axial direction is larger than the minimum width in the radial direction, and the long axis extends in the radial direction, and the short axis allows the wheel mounting bolt to pass through. An oval through hole is formed with a long axis having a size that covers the minimum diameter to the maximum diameter of the pitch circle, and a first hole is formed near the inner side of the strain-generating piece.
a strain-generating plate that is firmly fixed to the axle adapter with a bolt; a cover superimposed on the strain plate at a portion outward from the strain plate and firmly fixed together with the strain plate to the disc spacer with a second bolt; and a strain gauge attached to a first attachment surface on one side and a second attachment surface on the other side of the hole which form a pair with the strained piece in between, and a first strain gauge which forms one of the pair.
The strain gauges attached to the surface to be attached are connected in circuits to the two opposing first and second bridge sides, respectively, and the strain gauges attached to the second surface to be attached, which is the other of the pair, are connected to the two opposite bridge sides. 1. A torque measuring device comprising a Wheatstone bridge for detecting torque by connecting a circuit to third and fourth bridge sides adjacent to the first and second bridge sides, respectively. (2) In the Wheatstone bridge, the strain gauge attached to the first attachment surface forming one of the pair and attached to the half circumference of the strain plate is attached two times for each half circumference.
A strain gauge is connected to the opposite first and second bridge sides, and attached to the second attached surface forming the other of the pair, and attached to the half circumference of the strain plate. The torque measuring device according to claim 1, characterized in that the torque measuring device is constructed by connecting circuits to third and fourth bridge sides adjacent to the first and second bridge sides, respectively. .