JP3028586U - Muscle hardness tester - Google Patents

Abstract

(57) [Abstract] [Problem] To accurately and surely fix a measuring leg in a muscle hardness meter. A module plate (1) is fixed to an upper part of a central leg (21) of a muscle hardness meter, and a rubber plate (2) is integrally fixed to a back surface of the module plate (1), while two leg parts (41) are
42. A slider 43 is fixed to the upper part of the slider 42, and an inverted U-shaped stepped notch 3 having a notch 4 and a step 5 at the backs of both sides is provided at the center of the slider 43 in association with the rubber plate 2. The notch 4 of the stepped notch 3 is made to face the tip of a stopper pin 8 having a surface tooth 6 at the tip and a cross pin 7 on the body, and from the rear side so that the cross pin 7 abuts the step 5 on both sides. A muscle hardness meter having a holding mechanism 50 biased by a compression spring 9 toward the rubber plate 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a muscle hardness meter for measuring the hardness of muscles.

[0002]

[Prior art]

 The inventors of the present invention previously invented and applied for a muscle hardness tester having the structure disclosed in Japanese Patent Laid-Open No. 64-43233, and also manufactured a product utilizing this principle.

As shown in FIG. 6, the above-mentioned product transmits a movement (amount of rise) by a central leg 21 urged downward by a spring 14 to a rack 38 via a holding portion 22 as a first device 20. By rotating the toothed wheel 37 to which the rotational force is biased by the spiral spring 23 via the rack 38, a tachometer (not shown) is driven via the shaft 36a, and as a second device 40 As a means for stopping the above-mentioned tachometer, that is, the rack 38, a fine tooth mold 15 is formed on the back surface of the rack 38, and a ratchet-type locking claw 16 that is always in pressure contact with the fine tooth mold 15 and engages with it is provided. The lock teeth 18, which mesh with the fine tooth mold 15 over a certain length, are provided on the upper part of the tooth pattern 15 so that they do not always mesh at a certain interval. The front side of the holding mechanism 50 with the back teeth of the teeth 18 facing at a constant interval and the lower part thereof facing the rising portion 17 of the back of the locking claw at a constant interval. The upper part of the spring 56 is always biased toward the fine tooth mold 15 side by the lower spring 56, and a flat projection 53 is provided on the side surface of the central portion of the holding mechanism 50. A position corresponding to the cutout portion 52 of the thin plate-like engagement mechanism 51 integrally provided on the side portion of the slider 43 which moves up and down together with the leg portions 41 and 42 on both sides biased downward by the spring 44. , The elastic tongue 54 (see FIG. 7) whose tip is sharpened so as to face the cutout 52 is in contact with the outside.

In FIG. 6, in order to avoid complication of the drawing, the engagement mechanism 51 located behind the holding mechanism 50 is shown by an imaginary line (two-dot chain line).

In order to reduce the weight of this product, the gear 37, the rack 38, the locking claw 16, the locking claw 18, the slider 43, the holding mechanism 50, and the engaging mechanism 51 are also made of synthetic resin, and have an elastic tongue. The piece 54 is also not a separate part, but is an integrated piece that utilizes the flexibility of the thin plate synthetic resin itself as shown in FIGS. 6 and 7, and the movement of the central leg 21 causes the rack 38 and the gear 37 to move. An analog display is made by operating the tachometer (needle) with the rotating shaft 36a used.

[0006]

[Problems to be solved by the device]

 In the above-mentioned conventional product, the fixing means at the stop position of the rack 38 is the engagement between the fine tooth mold 15 and the lock teeth 18 provided on the back surface of the rack, so that the pitch of the fine tooth mold 15 is at least 0. Due to the size of about 5 mm, even if the lock teeth 18 are engaged with each other at the stop position of the rack 38, the engagement position may be displaced, and it is difficult to stop and fix the rack at an accurate position. there were.

Further, as the slider 43 rises as the legs 41 and 42 on both sides ascend, the engaging mechanism 51 rises, and the protrusions 53 of the engaging mechanism 51 as shown in FIGS. 7B to 7C. When exceeding the lower end, the upper end of the holding mechanism 50 tilts toward the rack 38 together with the protrusion 53 due to the action of the spring 56, and pushes the back portion of the lock tooth 18 to engage with the fine tooth pattern 15 of the rack 38 to move the rack 38. Fix in that position.

After the protrusion 53 has passed over the lower end of the engaging mechanism 51 and the rack 38 has been fixed as shown in FIG. 7C, the muscular force meter is separated from the muscle measurement site, and the central leg 21 and the leg portions on both sides are separated. Excluding the pressing forces of 41 and 42, the engagement mechanism 51 moves downward together with the slider 43 as shown in FIG. 7C by the action of the spring 44, and is positioned inside the notch 52 (on the left side). .

When the muscular strength is measured again, the projection button 55 on the outer side of the lower end of the holding mechanism 50 is pushed as shown in FIG. 7D, and the projection 53 is cut out of the engagement mechanism 51 provided on the slider 43. The fixing of the rack 38 needs to be released (reset) from the portion 52 to the outside as shown in FIG. 7A, but at this time, as shown in FIG. The elastic tongue 54 is bent to project the protrusion 53 to the outside.

The protrusion 53 is provided above the holding mechanism 50 so as to face the upper concave portion of the locking claw 16 by the force of the protrusion 53 protruding outward from the notch portion 52 of the engaging mechanism 51 by pressing the protrusion button 55. Since the back of the thick step portion 49 pushes the rising portion 17 of the back of the locking claw backward, the locking claw 16 is disengaged from the fine tooth mold 15, and the rack 38 is actuated by the spiral spring 23. It descends via 37 and returns to its original position.

The elastic tongue piece 54 and the protrusion 53 of the cutout 52 in the state of FIG. 7A have the force of the spring 56 and the flexibility of the synthetic resin, and the degree of engagement between the elastic tongue piece 54 and the protrusion 53. Since the elastic tongue 54 is supported by a delicate balance of force, if the operation of bending the elastic tongue 54 as shown in FIG. 7 (D) is repeated for a long period of time, the elastic tongue 54 of the cutout 52 may cause fatigue. There was a possibility that it would be missing and could not fulfill its function.

[0012]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems, in which the display of the amount of rise of the central leg is digitally displayed, and the central leg is not used as a fixing means when the central leg is raised, and the central leg is not used. The tip of the lock pin is pressed by a strong spring against a rubber plate fixed to the module plate that rises with it to ensure accurate and reliable fixation, and the tongue is flexible due to unstable synthetic resin even at reset. It is characterized in that the module plate is restored together with the central leg by pulling the lock pin away from the rubber plate against the spring without using the.

That is, the first aspect of the present invention is that the central leg 21 moves against the spring 14 when it is urged downward by the spring 14 and pressed against the muscle, and the central leg 21 moves. A first device 20 having a display portion 62 for digitally displaying a displacement amount, and a spring 44 weaker than the spring 14 of the central leg 21 urges the spring downward, and when the spring is pressed against the muscle. Two leg portions 41 and 42 arranged on both sides of the central leg 21 that move against 44, and a display portion of the first device 20 when the leg portions 41 and 42 move by a predetermined amount. And a holding mechanism 50 for holding the amount of displacement shown in FIG. 2, the holding mechanism 50 fixing the module plate 1 to the upper part of the center leg 21 and the module. The rubber plate 2 is integrally formed on the back surface of the plate 1. On the other hand, the slider 43 is fixed to the upper portions of the two legs 41 and 42, and the inverted U-shaped stepped notch 3 having the notch 4 and the step 5 at the backs of both sides is formed at the center of the slider 43. Is provided so as to correspond to the rubber plate 2, and the notch 4 of the stepped notch 3 faces the tip end of a stopper pin 8 having a surface tooth 6 at the front end and a cross pin 7 at the body, and is provided on both sides. The muscle hardness meter is characterized in that it is a mechanism in which a compression spring 9 is biased from the rear side toward the rubber plate 2 so that the cross pin 7 comes into contact with the step portion 5.

A second aspect of the present invention is the muscle hardness tester according to the first aspect of the present invention, wherein the distal end portion of the central leg 21 is a plurality of branch legs 21b.

A third aspect of the present invention is the muscle hardness tester according to the first or second aspect, wherein the slider 43 and the stopper pin 8 are made of metal.

[0016]

[Embodiment of device]

 Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. In the figure, reference numeral 1 denotes a module plate which is vertically fixed to the upper front surface of the central leg 21 and slides vertically along a guide plate 12a provided on the inner surface of the case 65, and a rubber plate 2 is fixed by embedding on the back surface thereof. The front surface of the module board 1 is in contact with the scale 60 for digital display. Reference numeral 14 is a compression spring that constantly presses the central leg 21 downward.

Reference numeral 61 denotes a cover of the display section, as shown in FIG. 4, a display window 62 in the center of the front face, an OFF (OFF) switch 63 on the lower left side thereof, and an ON / ZERO switch 64 on the lower right side thereof. Are arranged, and the digital display mechanism by the module plate 1 and the scale 60 is well known in conventional dial gauges and the like.

Reference numeral 3 denotes an inverted U-shaped step cutout formed in the center of the back surface of the slider 43 which is fixed to the upper portions of the two leg portions 41 and 42 and slides vertically along the guide 13. Steps 5 are formed on the back surfaces of both sides of the notch 4, and a downward slope 5a is provided on the front surface of the lower end of the step 5. The stepped notch 3 corresponds to the rear of the rubber plate 2. Is provided. Reference numeral 44 is a tension spring that constantly pushes the slider 43 downward, and the tension spring 44 is set to be weaker than the compression spring 14 of the central leg 21.

Reference numeral 8 is a stopper pin having a surface tooth 6 at the tip thereof and a cross pin 7 at the body portion slightly rearward thereof, and the tip portion of the stopper pin 8 is fitted in the notch portion 4 of the stepped notch 3. That is, the rear cross pin 7 is pressed by the compression spring 9 from the rear so as to come into contact with the step portion 5.

That is, as shown in FIGS. 2 and 3, the stopper pin 8 is provided with a large-diameter knob 8b at the rear end through an intermediate thin shaft portion 8a. A spring cover 67 is provided on the rear surface of the lid 66 in a penetrating manner through a strong compression spring 9 at a portion thereof.

FIG. 5 shows another form of the central leg 21 of the present invention. The distal end of the central leg is formed into a plurality (4) of branch legs 21b, and each branch leg 21b is formed by a spring 14b. It is urged downward.

In the above embodiment, the slider 43 and the stopper pin 8 are made of metal, and the slider 43 is made of aluminum and the stopper pin 8 is made of tool steel. You may form by.

[0023]

[Action]

 When the central leg 21 and the leg portions 41, 42 on both sides are pressed against the muscle 70 as shown in FIG. 4, each leg portion rises against the spring, but the leg portion 41, 41 is compressed by the compression spring 14 of the central leg 21. Since the tension spring 44 of 42 is weaker, the slider 43 rises more than the module plate 1.

When the slider 43 is lifted from the state shown in FIGS. 1 and 2 and the cross pin 7 of the stopper pin 8 is removed from the step portion 5 of the inverted U-shaped stepped notch 3, the stopper spring is operated by the compression spring 9. The pin 8 instantaneously projects forward as shown in FIG. 3, and the tip of the pin 8 presses the rubber plate 2 on the back surface of the module plate to fix the module plate 1 to the scale 60.

At this time, since the planar tooth 6 is formed at the tip of the lock pin 8, the planar tooth 6 is in a state where it is hard to fit into the rubber plate 2, so that the scale plate 1 is securely positioned at that position without being displaced. It is fixed and the hardness of the muscle in the part of the central leg 21 is digitally displayed on the front. At this time, the slope 5a on the front surface of the lower end of the step portion 5 urges the cross pin 7 forward by the action of the spring 44, so that the stopper pin 8 is fixed by the two springs.

Further, in the case where the tip of the central leg 21 has a plurality of shapes as shown in FIG. 5, it is not the muscular strength of one point of the pressing portion of the central leg 21, but a constant value surrounded by a plurality of branch legs 21b. The average value of the muscle strength in the range can be measured.

The above-mentioned measurement of muscle strength is a method of measuring muscle strength in a certain fixed state, and when measuring the difference in muscle strength from the trained muscle strength, it may be measured by the same means before and after training. In addition, when measuring the difference in muscle strength between relaxation and tension at the same time, measure the muscle strength during relaxation and press the ON / ZERO switch 64 to return the digital display to zero (0) and the rear knob 8b. After pulling, resetting the module plate 1 and resetting it, when measuring the muscle force at the same position with the muscles tense, the digitally displayed value in this case shows the difference in muscle force from that at relaxation, You will be able to estimate the strength of your muscles.

[0028]

[Effect of device]

 In the present invention, the module plate is securely fixed by adopting a means for instantaneously pressing the stopper pin against the rubber plate on the back surface of the module plate at the elevated position of the module plate as the center leg is lifted. It is possible to obtain accurate measurement values.

Further, when the distal end portion of the central leg is made into a plurality of branch legs, an average value of the muscle force in a certain range can be obtained.

[Brief description of drawings]

FIG. 1 is a rear view of the device of the present invention with a case back opened.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a side view of the central longitudinal section of the present invention when the module plate is fixed.

FIG. 4 is a front view of the device of the present invention.

FIG. 5 is a partial perspective view showing another example of the central leg of the present invention.

FIG. 6 is a rear view of the conventional product with the case back opened.

FIG. 7 is an explanatory view showing a conventional rack holding mode.

[Explanation of symbols]

 1 Module Plate 2 Rubber Plate 3 Stepped Notch 4 Notch 5 Stepped 5a Slope 6 Face Tooth 7 Cross Pin 8 Stopper Pin 8a Fine Shaft 8b Knob 9 Spring 12a Guide Plate 13 Guide 14 Spring 20 First Device 21 Central Leg 21b Branching leg 40 Second device 41 Leg part 42 Leg part 43 Slider 44 Spring 50 Holding mechanism 60 Scale 61 Cover 62 Display window 63 Off switch 64 On / zero switch 65 Case 67 Spring cover 70 Muscle

Claims (3)

[Scope of utility model registration request] 1. A central leg 21 that moves against the spring 14 when it is urged downward by a spring 14 and pressed against a muscle, and a display unit that digitally displays the amount of displacement of the central leg 21. 62 of the central leg 21 and a spring 44 weaker than the spring 14 of the central leg 21 to bias the spring 4 downward when pressed against the muscle.
The two leg portions 41, 42 arranged on both sides of the central leg 21 that move against 4 and the display portion of the first device 20 when the leg portions 41, 42 have moved by a predetermined amount. A second device 40 comprising a holding mechanism 50 for holding the indicated displacement amount.
In the muscle hardness tester, the holding mechanism 50 fixes the module plate 1 to the upper part of the central leg 21 and integrally fixes the rubber plate 2 to the back surface of the module plate 1,
A slider 43 is fixed to the upper portions of the two legs 41 and 42, and an inverted U-shaped stepped notch 3 having a notch 4 and stepped portions 5 on the backs of both sides is provided at the center of the slider 43. Corresponding to the above, the notch 4 of the stepped notch 3 is made to face the tip of a stopper pin 8 having a surface tooth 6 at the tip and a cross pin 7 at the body, and the cross pin 7 at both steps 5 Is a mechanism in which a compression spring 9 urges the rubber plate 2 from behind so as to contact with the muscle hardness meter. 2. The center leg 21 has a plurality of branch legs 21 at the tip thereof.
The muscle hardness tester according to claim 1, wherein the hardness is b. 3. The muscle hardness tester according to claim 1, wherein the slider 43 and the stopper pin 8 are made of metal.